diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-17 03:05:01 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-17 03:05:01 +0300 |
| commit | cf9b0772f2e410645fece13b749bd56505b998b8 (patch) | |
| tree | 8b171a2c49d1e9e41d4e43fb91602e664cde8551 /drivers | |
| parent | 527d1470744d338c912f94bc1f4dba08ffdff349 (diff) | |
| parent | 339cd0ea082287ea8e2b7e7159a5a33665a2cbe3 (diff) | |
| download | linux-cf9b0772f2e410645fece13b749bd56505b998b8.tar.xz | |
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Arnd Bergmann:
"This branch contains platform-related driver updates for ARM and
ARM64, these are the areas that bring the changes:
New drivers:
- driver support for Renesas R-Car V3M (R8A77970)
- power management support for Amlogic GX
- a new driver for the Tegra BPMP thermal sensor
- a new bus driver for Technologic Systems NBUS
Changes for subsystems that prefer to merge through arm-soc:
- the usual updates for reset controller drivers from Philipp Zabel,
with five added drivers for SoCs in the arc, meson, socfpa,
uniphier and mediatek families
- updates to the ARM SCPI and PSCI frameworks, from Sudeep Holla,
Heiner Kallweit and Lorenzo Pieralisi
Changes specific to some ARM-based SoC
- the Freescale/NXP DPAA QBMan drivers from PowerPC can now work on
ARM as well
- several changes for power management on Broadcom SoCs
- various improvements on Qualcomm, Broadcom, Amlogic, Atmel,
Mediatek
- minor Cleanups for Samsung, TI OMAP SoCs"
[ NOTE! This doesn't work without the previous ARM SoC device-tree pull,
because the R8A77970 driver is missing a header file that came from
that pull.
The fact that this got merged afterwards only fixes it at this point,
and bisection of that driver will fail if/when you walk into the
history of that driver. - Linus ]
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (96 commits)
soc: amlogic: meson-gx-pwrc-vpu: fix power-off when powered by bootloader
bus: add driver for the Technologic Systems NBUS
memory: omap-gpmc: Remove deprecated gpmc_update_nand_reg()
soc: qcom: remove unused label
soc: amlogic: gx pm domain: add PM and OF dependencies
drivers/firmware: psci_checker: Add missing destroy_timer_on_stack()
dt-bindings: power: add amlogic meson power domain bindings
soc: amlogic: add Meson GX VPU Domains driver
soc: qcom: Remote filesystem memory driver
dt-binding: soc: qcom: Add binding for rmtfs memory
of: reserved_mem: Accessor for acquiring reserved_mem
of/platform: Generalize /reserved-memory handling
soc: mediatek: pwrap: fix fatal compiler error
soc: mediatek: pwrap: fix compiler errors
arm64: mediatek: cleanup message for platform selection
soc: Allow test-building of MediaTek drivers
soc: mediatek: place Kconfig for all SoC drivers under menu
soc: mediatek: pwrap: add support for MT7622 SoC
soc: mediatek: pwrap: add common way for setup CS timing extenstion
soc: mediatek: pwrap: add MediaTek MT6380 as one slave of pwrap
..
Diffstat (limited to 'drivers')
86 files changed, 6364 insertions, 961 deletions
diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig index fa94a85bf410..dc7b3c7b7d42 100644 --- a/drivers/bus/Kconfig +++ b/drivers/bus/Kconfig @@ -165,6 +165,14 @@ config TI_SYSC Generic driver for Texas Instruments interconnect target module found on many TI SoCs. +config TS_NBUS + tristate "Technologic Systems NBUS Driver" + depends on SOC_IMX28 + depends on OF_GPIO && PWM + help + Driver for the Technologic Systems NBUS which is used to interface + with the peripherals in the FPGA of the TS-4600 SoM. + config UNIPHIER_SYSTEM_BUS tristate "UniPhier System Bus driver" depends on ARCH_UNIPHIER && OF diff --git a/drivers/bus/Makefile b/drivers/bus/Makefile index 94a079008cbe..9bcd0bf3954b 100644 --- a/drivers/bus/Makefile +++ b/drivers/bus/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_SIMPLE_PM_BUS) += simple-pm-bus.o obj-$(CONFIG_TEGRA_ACONNECT) += tegra-aconnect.o obj-$(CONFIG_TEGRA_GMI) += tegra-gmi.o obj-$(CONFIG_TI_SYSC) += ti-sysc.o +obj-$(CONFIG_TS_NBUS) += ts-nbus.o obj-$(CONFIG_UNIPHIER_SYSTEM_BUS) += uniphier-system-bus.o obj-$(CONFIG_VEXPRESS_CONFIG) += vexpress-config.o diff --git a/drivers/bus/ts-nbus.c b/drivers/bus/ts-nbus.c new file mode 100644 index 000000000000..073fd9011154 --- /dev/null +++ b/drivers/bus/ts-nbus.c @@ -0,0 +1,375 @@ +/* + * NBUS driver for TS-4600 based boards + * + * Copyright (c) 2016 - Savoir-faire Linux + * Author: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + * + * This driver implements a GPIOs bit-banged bus, called the NBUS by Technologic + * Systems. It is used to communicate with the peripherals in the FPGA on the + * TS-4600 SoM. + */ + +#include <linux/bitops.h> +#include <linux/gpio/consumer.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/pwm.h> +#include <linux/ts-nbus.h> + +#define TS_NBUS_DIRECTION_IN 0 +#define TS_NBUS_DIRECTION_OUT 1 +#define TS_NBUS_WRITE_ADR 0 +#define TS_NBUS_WRITE_VAL 1 + +struct ts_nbus { + struct pwm_device *pwm; + struct gpio_descs *data; + struct gpio_desc *csn; + struct gpio_desc *txrx; + struct gpio_desc *strobe; + struct gpio_desc *ale; + struct gpio_desc *rdy; + struct mutex lock; +}; + +/* + * request all gpios required by the bus. + */ +static int ts_nbus_init_pdata(struct platform_device *pdev, struct ts_nbus + *ts_nbus) +{ + ts_nbus->data = devm_gpiod_get_array(&pdev->dev, "ts,data", + GPIOD_OUT_HIGH); + if (IS_ERR(ts_nbus->data)) { + dev_err(&pdev->dev, "failed to retrieve ts,data-gpio from dts\n"); + return PTR_ERR(ts_nbus->data); + } + + ts_nbus->csn = devm_gpiod_get(&pdev->dev, "ts,csn", GPIOD_OUT_HIGH); + if (IS_ERR(ts_nbus->csn)) { + dev_err(&pdev->dev, "failed to retrieve ts,csn-gpio from dts\n"); + return PTR_ERR(ts_nbus->csn); + } + + ts_nbus->txrx = devm_gpiod_get(&pdev->dev, "ts,txrx", GPIOD_OUT_HIGH); + if (IS_ERR(ts_nbus->txrx)) { + dev_err(&pdev->dev, "failed to retrieve ts,txrx-gpio from dts\n"); + return PTR_ERR(ts_nbus->txrx); + } + + ts_nbus->strobe = devm_gpiod_get(&pdev->dev, "ts,strobe", GPIOD_OUT_HIGH); + if (IS_ERR(ts_nbus->strobe)) { + dev_err(&pdev->dev, "failed to retrieve ts,strobe-gpio from dts\n"); + return PTR_ERR(ts_nbus->strobe); + } + + ts_nbus->ale = devm_gpiod_get(&pdev->dev, "ts,ale", GPIOD_OUT_HIGH); + if (IS_ERR(ts_nbus->ale)) { + dev_err(&pdev->dev, "failed to retrieve ts,ale-gpio from dts\n"); + return PTR_ERR(ts_nbus->ale); + } + + ts_nbus->rdy = devm_gpiod_get(&pdev->dev, "ts,rdy", GPIOD_IN); + if (IS_ERR(ts_nbus->rdy)) { + dev_err(&pdev->dev, "failed to retrieve ts,rdy-gpio from dts\n"); + return PTR_ERR(ts_nbus->rdy); + } + + return 0; +} + +/* + * the data gpios are used for reading and writing values, their directions + * should be adjusted accordingly. + */ +static void ts_nbus_set_direction(struct ts_nbus *ts_nbus, int direction) +{ + int i; + + for (i = 0; i < 8; i++) { + if (direction == TS_NBUS_DIRECTION_IN) + gpiod_direction_input(ts_nbus->data->desc[i]); + else + /* when used as output the default state of the data + * lines are set to high */ + gpiod_direction_output(ts_nbus->data->desc[i], 1); + } +} + +/* + * reset the bus in its initial state. + * The data, csn, strobe and ale lines must be zero'ed to let the FPGA knows a + * new transaction can be process. + */ +static void ts_nbus_reset_bus(struct ts_nbus *ts_nbus) +{ + int i; + int values[8]; + + for (i = 0; i < 8; i++) + values[i] = 0; + + gpiod_set_array_value_cansleep(8, ts_nbus->data->desc, values); + gpiod_set_value_cansleep(ts_nbus->csn, 0); + gpiod_set_value_cansleep(ts_nbus->strobe, 0); + gpiod_set_value_cansleep(ts_nbus->ale, 0); +} + +/* + * let the FPGA knows it can process. + */ +static void ts_nbus_start_transaction(struct ts_nbus *ts_nbus) +{ + gpiod_set_value_cansleep(ts_nbus->strobe, 1); +} + +/* + * read a byte value from the data gpios. + * return 0 on success or negative errno on failure. + */ +static int ts_nbus_read_byte(struct ts_nbus *ts_nbus, u8 *val) +{ + struct gpio_descs *gpios = ts_nbus->data; + int ret, i; + + *val = 0; + for (i = 0; i < 8; i++) { + ret = gpiod_get_value_cansleep(gpios->desc[i]); + if (ret < 0) + return ret; + if (ret) + *val |= BIT(i); + } + + return 0; +} + +/* + * set the data gpios accordingly to the byte value. + */ +static void ts_nbus_write_byte(struct ts_nbus *ts_nbus, u8 byte) +{ + struct gpio_descs *gpios = ts_nbus->data; + int i; + int values[8]; + + for (i = 0; i < 8; i++) + if (byte & BIT(i)) + values[i] = 1; + else + values[i] = 0; + + gpiod_set_array_value_cansleep(8, gpios->desc, values); +} + +/* + * reading the bus consists of resetting the bus, then notifying the FPGA to + * send the data in the data gpios and return the read value. + * return 0 on success or negative errno on failure. + */ +static int ts_nbus_read_bus(struct ts_nbus *ts_nbus, u8 *val) +{ + ts_nbus_reset_bus(ts_nbus); + ts_nbus_start_transaction(ts_nbus); + + return ts_nbus_read_byte(ts_nbus, val); +} + +/* + * writing to the bus consists of resetting the bus, then define the type of + * command (address/value), write the data and notify the FPGA to retrieve the + * value in the data gpios. + */ +static void ts_nbus_write_bus(struct ts_nbus *ts_nbus, int cmd, u8 val) +{ + ts_nbus_reset_bus(ts_nbus); + + if (cmd == TS_NBUS_WRITE_ADR) + gpiod_set_value_cansleep(ts_nbus->ale, 1); + + ts_nbus_write_byte(ts_nbus, val); + ts_nbus_start_transaction(ts_nbus); +} + +/* + * read the value in the FPGA register at the given address. + * return 0 on success or negative errno on failure. + */ +int ts_nbus_read(struct ts_nbus *ts_nbus, u8 adr, u16 *val) +{ + int ret, i; + u8 byte; + + /* bus access must be atomic */ + mutex_lock(&ts_nbus->lock); + + /* set the bus in read mode */ + gpiod_set_value_cansleep(ts_nbus->txrx, 0); + + /* write address */ + ts_nbus_write_bus(ts_nbus, TS_NBUS_WRITE_ADR, adr); + + /* set the data gpios direction as input before reading */ + ts_nbus_set_direction(ts_nbus, TS_NBUS_DIRECTION_IN); + + /* reading value MSB first */ + do { + *val = 0; + byte = 0; + for (i = 1; i >= 0; i--) { + /* read a byte from the bus, leave on error */ + ret = ts_nbus_read_bus(ts_nbus, &byte); + if (ret < 0) + goto err; + + /* append the byte read to the final value */ + *val |= byte << (i * 8); + } + gpiod_set_value_cansleep(ts_nbus->csn, 1); + ret = gpiod_get_value_cansleep(ts_nbus->rdy); + } while (ret); + +err: + /* restore the data gpios direction as output after reading */ + ts_nbus_set_direction(ts_nbus, TS_NBUS_DIRECTION_OUT); + + mutex_unlock(&ts_nbus->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(ts_nbus_read); + +/* + * write the desired value in the FPGA register at the given address. + */ +int ts_nbus_write(struct ts_nbus *ts_nbus, u8 adr, u16 val) +{ + int i; + + /* bus access must be atomic */ + mutex_lock(&ts_nbus->lock); + + /* set the bus in write mode */ + gpiod_set_value_cansleep(ts_nbus->txrx, 1); + + /* write address */ + ts_nbus_write_bus(ts_nbus, TS_NBUS_WRITE_ADR, adr); + + /* writing value MSB first */ + for (i = 1; i >= 0; i--) + ts_nbus_write_bus(ts_nbus, TS_NBUS_WRITE_VAL, (u8)(val >> (i * 8))); + + /* wait for completion */ + gpiod_set_value_cansleep(ts_nbus->csn, 1); + while (gpiod_get_value_cansleep(ts_nbus->rdy) != 0) { + gpiod_set_value_cansleep(ts_nbus->csn, 0); + gpiod_set_value_cansleep(ts_nbus->csn, 1); + } + + mutex_unlock(&ts_nbus->lock); + + return 0; +} +EXPORT_SYMBOL_GPL(ts_nbus_write); + +static int ts_nbus_probe(struct platform_device *pdev) +{ + struct pwm_device *pwm; + struct pwm_args pargs; + struct device *dev = &pdev->dev; + struct ts_nbus *ts_nbus; + int ret; + + ts_nbus = devm_kzalloc(dev, sizeof(*ts_nbus), GFP_KERNEL); + if (!ts_nbus) + return -ENOMEM; + + mutex_init(&ts_nbus->lock); + + ret = ts_nbus_init_pdata(pdev, ts_nbus); + if (ret < 0) + return ret; + + pwm = devm_pwm_get(dev, NULL); + if (IS_ERR(pwm)) { + ret = PTR_ERR(pwm); + if (ret != -EPROBE_DEFER) + dev_err(dev, "unable to request PWM\n"); + return ret; + } + + pwm_get_args(pwm, &pargs); + if (!pargs.period) { + dev_err(&pdev->dev, "invalid PWM period\n"); + return -EINVAL; + } + + /* + * FIXME: pwm_apply_args() should be removed when switching to + * the atomic PWM API. + */ + pwm_apply_args(pwm); + ret = pwm_config(pwm, pargs.period, pargs.period); + if (ret < 0) + return ret; + + /* + * we can now start the FPGA and populate the peripherals. + */ + pwm_enable(pwm); + ts_nbus->pwm = pwm; + + /* + * let the child nodes retrieve this instance of the ts-nbus. + */ + dev_set_drvdata(dev, ts_nbus); + + ret = of_platform_populate(dev->of_node, NULL, NULL, dev); + if (ret < 0) + return ret; + + dev_info(dev, "initialized\n"); + + return 0; +} + +static int ts_nbus_remove(struct platform_device *pdev) +{ + struct ts_nbus *ts_nbus = dev_get_drvdata(&pdev->dev); + + /* shutdown the FPGA */ + mutex_lock(&ts_nbus->lock); + pwm_disable(ts_nbus->pwm); + mutex_unlock(&ts_nbus->lock); + + return 0; +} + +static const struct of_device_id ts_nbus_of_match[] = { + { .compatible = "technologic,ts-nbus", }, + { }, +}; +MODULE_DEVICE_TABLE(of, ts_nbus_of_match); + +static struct platform_driver ts_nbus_driver = { + .probe = ts_nbus_probe, + .remove = ts_nbus_remove, + .driver = { + .name = "ts_nbus", + .of_match_table = ts_nbus_of_match, + }, +}; + +module_platform_driver(ts_nbus_driver); + +MODULE_ALIAS("platform:ts_nbus"); +MODULE_AUTHOR("Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>"); +MODULE_DESCRIPTION("Technologic Systems NBUS"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/clk/bcm/Kconfig b/drivers/clk/bcm/Kconfig index 1d9187df167b..4c4bd85f707c 100644 --- a/drivers/clk/bcm/Kconfig +++ b/drivers/clk/bcm/Kconfig @@ -30,6 +30,15 @@ config CLK_BCM_CYGNUS help Enable common clock framework support for the Broadcom Cygnus SoC +config CLK_BCM_HR2 + bool "Broadcom Hurricane 2 clock support" + depends on ARCH_BCM_HR2 || COMPILE_TEST + select COMMON_CLK_IPROC + default ARCH_BCM_HR2 + help + Enable common clock framework support for the Broadcom Hurricane 2 + SoC + config CLK_BCM_NSP bool "Broadcom Northstar/Northstar Plus clock support" depends on ARCH_BCM_5301X || ARCH_BCM_NSP || COMPILE_TEST diff --git a/drivers/clk/bcm/Makefile b/drivers/clk/bcm/Makefile index e3f0cb0d90f3..002661d39128 100644 --- a/drivers/clk/bcm/Makefile +++ b/drivers/clk/bcm/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_ARCH_BCM2835) += clk-bcm2835.o obj-$(CONFIG_ARCH_BCM2835) += clk-bcm2835-aux.o obj-$(CONFIG_ARCH_BCM_53573) += clk-bcm53573-ilp.o obj-$(CONFIG_CLK_BCM_CYGNUS) += clk-cygnus.o +obj-$(CONFIG_CLK_BCM_HR2) += clk-hr2.o obj-$(CONFIG_CLK_BCM_NSP) += clk-nsp.o obj-$(CONFIG_CLK_BCM_NS2) += clk-ns2.o obj-$(CONFIG_CLK_BCM_SR) += clk-sr.o diff --git a/drivers/clk/bcm/clk-hr2.c b/drivers/clk/bcm/clk-hr2.c new file mode 100644 index 000000000000..f7c5b7379475 --- /dev/null +++ b/drivers/clk/bcm/clk-hr2.c @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2017 Broadcom + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/err.h> +#include <linux/clk-provider.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> + +#include "clk-iproc.h" + +static void __init hr2_armpll_init(struct device_node *node) +{ + iproc_armpll_setup(node); +} +CLK_OF_DECLARE(hr2_armpll, "brcm,hr2-armpll", hr2_armpll_init); diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index 6e4ed5a9c6fd..fa87a055905e 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -215,6 +215,17 @@ config QCOM_SCM_64 def_bool y depends on QCOM_SCM && ARM64 +config QCOM_SCM_DOWNLOAD_MODE_DEFAULT + bool "Qualcomm download mode enabled by default" + depends on QCOM_SCM + help + A device with "download mode" enabled will upon an unexpected + warm-restart enter a special debug mode that allows the user to + "download" memory content over USB for offline postmortem analysis. + The feature can be enabled/disabled on the kernel command line. + + Say Y here to enable "download mode" by default. + config TI_SCI_PROTOCOL tristate "TI System Control Interface (TISCI) Message Protocol" depends on TI_MESSAGE_MANAGER diff --git a/drivers/firmware/arm_scpi.c b/drivers/firmware/arm_scpi.c index 7da9f1b83ebe..dfb373c8ba2a 100644 --- a/drivers/firmware/arm_scpi.c +++ b/drivers/firmware/arm_scpi.c @@ -28,6 +28,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/bitmap.h> +#include <linux/bitfield.h> #include <linux/device.h> #include <linux/err.h> #include <linux/export.h> @@ -72,21 +73,13 @@ #define MAX_DVFS_DOMAINS 8 #define MAX_DVFS_OPPS 16 -#define DVFS_LATENCY(hdr) (le32_to_cpu(hdr) >> 16) -#define DVFS_OPP_COUNT(hdr) ((le32_to_cpu(hdr) >> 8) & 0xff) - -#define PROTOCOL_REV_MINOR_BITS 16 -#define PROTOCOL_REV_MINOR_MASK ((1U << PROTOCOL_REV_MINOR_BITS) - 1) -#define PROTOCOL_REV_MAJOR(x) ((x) >> PROTOCOL_REV_MINOR_BITS) -#define PROTOCOL_REV_MINOR(x) ((x) & PROTOCOL_REV_MINOR_MASK) - -#define FW_REV_MAJOR_BITS 24 -#define FW_REV_MINOR_BITS 16 -#define FW_REV_PATCH_MASK ((1U << FW_REV_MINOR_BITS) - 1) -#define FW_REV_MINOR_MASK ((1U << FW_REV_MAJOR_BITS) - 1) -#define FW_REV_MAJOR(x) ((x) >> FW_REV_MAJOR_BITS) -#define FW_REV_MINOR(x) (((x) & FW_REV_MINOR_MASK) >> FW_REV_MINOR_BITS) -#define FW_REV_PATCH(x) ((x) & FW_REV_PATCH_MASK) + +#define PROTO_REV_MAJOR_MASK GENMASK(31, 16) +#define PROTO_REV_MINOR_MASK GENMASK(15, 0) + +#define FW_REV_MAJOR_MASK GENMASK(31, 24) +#define FW_REV_MINOR_MASK GENMASK(23, 16) +#define FW_REV_PATCH_MASK GENMASK(15, 0) #define MAX_RX_TIMEOUT (msecs_to_jiffies(30)) @@ -311,10 +304,6 @@ struct clk_get_info { u8 name[20]; } __packed; -struct clk_get_value { - __le32 rate; -} __packed; - struct clk_set_value { __le16 id; __le16 reserved; @@ -328,7 +317,9 @@ struct legacy_clk_set_value { } __packed; struct dvfs_info { - __le32 header; + u8 domain; + u8 opp_count; + __le16 latency; struct { __le32 freq; __le32 m_volt; @@ -351,11 +342,6 @@ struct _scpi_sensor_info { char name[20]; }; -struct sensor_value { - __le32 lo_val; - __le32 hi_val; -} __packed; - struct dev_pstate_set { __le16 dev_id; u8 pstate; @@ -419,19 +405,20 @@ static void scpi_process_cmd(struct scpi_chan *ch, u32 cmd) unsigned int len; if (scpi_info->is_legacy) { - struct legacy_scpi_shared_mem *mem = ch->rx_payload; + struct legacy_scpi_shared_mem __iomem *mem = + ch->rx_payload; /* RX Length is not replied by the legacy Firmware */ len = match->rx_len; - match->status = le32_to_cpu(mem->status); + match->status = ioread32(&mem->status); memcpy_fromio(match->rx_buf, mem->payload, len); } else { - struct scpi_shared_mem *mem = ch->rx_payload; + struct scpi_shared_mem __iomem *mem = ch->rx_payload; len = min(match->rx_len, CMD_SIZE(cmd)); - match->status = le32_to_cpu(mem->status); + match->status = ioread32(&mem->status); memcpy_fromio(match->rx_buf, mem->payload, len); } @@ -445,11 +432,11 @@ static void scpi_process_cmd(struct scpi_chan *ch, u32 cmd) static void scpi_handle_remote_msg(struct mbox_client *c, void *msg) { struct scpi_chan *ch = container_of(c, struct scpi_chan, cl); - struct scpi_shared_mem *mem = ch->rx_payload; + struct scpi_shared_mem __iomem *mem = ch->rx_payload; u32 cmd = 0; if (!scpi_info->is_legacy) - cmd = le32_to_cpu(mem->command); + cmd = ioread32(&mem->command); scpi_process_cmd(ch, cmd); } @@ -459,7 +446,7 @@ static void scpi_tx_prepare(struct mbox_client *c, void *msg) unsigned long flags; struct scpi_xfer *t = msg; struct scpi_chan *ch = container_of(c, struct scpi_chan, cl); - struct scpi_shared_mem *mem = (struct scpi_shared_mem *)ch->tx_payload; + struct scpi_shared_mem __iomem *mem = ch->tx_payload; if (t->tx_buf) { if (scpi_info->is_legacy) @@ -478,7 +465,7 @@ static void scpi_tx_prepare(struct mbox_client *c, void *msg) } if (!scpi_info->is_legacy) - mem->command = cpu_to_le32(t->cmd); + iowrite32(t->cmd, &mem->command); } static struct scpi_xfer *get_scpi_xfer(struct scpi_chan *ch) @@ -583,13 +570,13 @@ scpi_clk_get_range(u16 clk_id, unsigned long *min, unsigned long *max) static unsigned long scpi_clk_get_val(u16 clk_id) { int ret; - struct clk_get_value clk; + __le32 rate; __le16 le_clk_id = cpu_to_le16(clk_id); ret = scpi_send_message(CMD_GET_CLOCK_VALUE, &le_clk_id, - sizeof(le_clk_id), &clk, sizeof(clk)); + sizeof(le_clk_id), &rate, sizeof(rate)); - return ret ? ret : le32_to_cpu(clk.rate); + return ret ? ret : le32_to_cpu(rate); } static int scpi_clk_set_val(u16 clk_id, unsigned long rate) @@ -645,34 +632,34 @@ static int opp_cmp_func(const void *opp1, const void *opp2) static struct scpi_dvfs_info *scpi_dvfs_get_info(u8 domain) { + if (domain >= MAX_DVFS_DOMAINS) + return ERR_PTR(-EINVAL); + + return scpi_info->dvfs[domain] ?: ERR_PTR(-EINVAL); +} + +static int scpi_dvfs_populate_info(struct device *dev, u8 domain) +{ struct scpi_dvfs_info *info; struct scpi_opp *opp; struct dvfs_info buf; int ret, i; - if (domain >= MAX_DVFS_DOMAINS) - return ERR_PTR(-EINVAL); - - if (scpi_info->dvfs[domain]) /* data already populated */ - return scpi_info->dvfs[domain]; - ret = scpi_send_message(CMD_GET_DVFS_INFO, &domain, sizeof(domain), &buf, sizeof(buf)); if (ret) - return ERR_PTR(ret); + return ret; - info = kmalloc(sizeof(*info), GFP_KERNEL); + info = devm_kmalloc(dev, sizeof(*info), GFP_KERNEL); if (!info) - return ERR_PTR(-ENOMEM); + return -ENOMEM; - info->count = DVFS_OPP_COUNT(buf.header); - info->latency = DVFS_LATENCY(buf.header) * 1000; /* uS to nS */ + info->count = buf.opp_count; + info->latency = le16_to_cpu(buf.latency) * 1000; /* uS to nS */ - info->opps = kcalloc(info->count, sizeof(*opp), GFP_KERNEL); - if (!info->opps) { - kfree(info); - return ERR_PTR(-ENOMEM); - } + info->opps = devm_kcalloc(dev, info->count, sizeof(*opp), GFP_KERNEL); + if (!info->opps) + return -ENOMEM; for (i = 0, opp = info->opps; i < info->count; i++, opp++) { opp->freq = le32_to_cpu(buf.opps[i].freq); @@ -682,7 +669,15 @@ static struct scpi_dvfs_info *scpi_dvfs_get_info(u8 domain) sort(info->opps, info->count, sizeof(*opp), opp_cmp_func, NULL); scpi_info->dvfs[domain] = info; - return info; + return 0; +} + +static void scpi_dvfs_populate(struct device *dev) +{ + int domain; + + for (domain = 0; domain < MAX_DVFS_DOMAINS; domain++) + scpi_dvfs_populate_info(dev, domain); } static int scpi_dev_domain_id(struct device *dev) @@ -713,9 +708,6 @@ static int scpi_dvfs_get_transition_latency(struct device *dev) if (IS_ERR(info)) return PTR_ERR(info); - if (!info->latency) - return 0; - return info->latency; } @@ -776,20 +768,19 @@ static int scpi_sensor_get_info(u16 sensor_id, struct scpi_sensor_info *info) static int scpi_sensor_get_value(u16 sensor, u64 *val) { __le16 id = cpu_to_le16(sensor); - struct sensor_value buf; + __le64 value; int ret; ret = scpi_send_message(CMD_SENSOR_VALUE, &id, sizeof(id), - &buf, sizeof(buf)); + &value, sizeof(value)); if (ret) return ret; if (scpi_info->is_legacy) - /* only 32-bits supported, hi_val can be junk */ - *val = le32_to_cpu(buf.lo_val); + /* only 32-bits supported, upper 32 bits can be junk */ + *val = le32_to_cpup((__le32 *)&value); else - *val = (u64)le32_to_cpu(buf.hi_val) << 32 | - le32_to_cpu(buf.lo_val); + *val = le64_to_cpu(value); return 0; } @@ -862,23 +853,19 @@ static int scpi_init_versions(struct scpi_drvinfo *info) static ssize_t protocol_version_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct scpi_drvinfo *scpi_info = dev_get_drvdata(dev); - - return sprintf(buf, "%d.%d\n", - PROTOCOL_REV_MAJOR(scpi_info->protocol_version), - PROTOCOL_REV_MINOR(scpi_info->protocol_version)); + return sprintf(buf, "%lu.%lu\n", + FIELD_GET(PROTO_REV_MAJOR_MASK, scpi_info->protocol_version), + FIELD_GET(PROTO_REV_MINOR_MASK, scpi_info->protocol_version)); } static DEVICE_ATTR_RO(protocol_version); static ssize_t firmware_version_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct scpi_drvinfo *scpi_info = dev_get_drvdata(dev); - - return sprintf(buf, "%d.%d.%d\n", - FW_REV_MAJOR(scpi_info->firmware_version), - FW_REV_MINOR(scpi_info->firmware_version), - FW_REV_PATCH(scpi_info->firmware_version)); + return sprintf(buf, "%lu.%lu.%lu\n", + FIELD_GET(FW_REV_MAJOR_MASK, scpi_info->firmware_version), + FIELD_GET(FW_REV_MINOR_MASK, scpi_info->firmware_version), + FIELD_GET(FW_REV_PATCH_MASK, scpi_info->firmware_version)); } static DEVICE_ATTR_RO(firmware_version); @@ -889,39 +876,13 @@ static struct attribute *versions_attrs[] = { }; ATTRIBUTE_GROUPS(versions); -static void -scpi_free_channels(struct device *dev, struct scpi_chan *pchan, int count) +static void scpi_free_channels(void *data) { + struct scpi_drvinfo *info = data; int i; - for (i = 0; i < count && pchan->chan; i++, pchan++) { - mbox_free_channel(pchan->chan); - devm_kfree(dev, pchan->xfers); - devm_iounmap(dev, pchan->rx_payload); - } -} - -static int scpi_remove(struct platform_device *pdev) -{ - int i; - struct device *dev = &pdev->dev; - struct scpi_drvinfo *info = platform_get_drvdata(pdev); - - scpi_info = NULL; /* stop exporting SCPI ops through get_scpi_ops */ - - of_platform_depopulate(dev); - sysfs_remove_groups(&dev->kobj, versions_groups); - scpi_free_channels(dev, info->channels, info->num_chans); - platform_set_drvdata(pdev, NULL); - - for (i = 0; i < MAX_DVFS_DOMAINS && info->dvfs[i]; i++) { - kfree(info->dvfs[i]->opps); - kfree(info->dvfs[i]); - } - devm_kfree(dev, info->channels); - devm_kfree(dev, info); - - return 0; + for (i = 0; i < info->num_chans; i++) + mbox_free_channel(info->channels[i].chan); } #define MAX_SCPI_XFERS 10 @@ -952,7 +913,6 @@ static int scpi_probe(struct platform_device *pdev) { int count, idx, ret; struct resource res; - struct scpi_chan *scpi_chan; struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; @@ -969,13 +929,19 @@ static int scpi_probe(struct platform_device *pdev) return -ENODEV; } - scpi_chan = devm_kcalloc(dev, count, sizeof(*scpi_chan), GFP_KERNEL); - if (!scpi_chan) + scpi_info->channels = devm_kcalloc(dev, count, sizeof(struct scpi_chan), + GFP_KERNEL); + if (!scpi_info->channels) return -ENOMEM; - for (idx = 0; idx < count; idx++) { + ret = devm_add_action(dev, scpi_free_channels, scpi_info); + if (ret) + return ret; + + for (; scpi_info->num_chans < count; scpi_info->num_chans++) { resource_size_t size; - struct scpi_chan *pchan = scpi_chan + idx; + int idx = scpi_info->num_chans; + struct scpi_chan *pchan = scpi_info->channels + idx; struct mbox_client *cl = &pchan->cl; struct device_node *shmem = of_parse_phandle(np, "shmem", idx); @@ -983,15 +949,14 @@ static int scpi_probe(struct platform_device *pdev) of_node_put(shmem); if (ret) { dev_err(dev, "failed to get SCPI payload mem resource\n"); - goto err; + return ret; } size = resource_size(&res); pchan->rx_payload = devm_ioremap(dev, res.start, size); if (!pchan->rx_payload) { dev_err(dev, "failed to ioremap SCPI payload\n"); - ret = -EADDRNOTAVAIL; - goto err; + return -EADDRNOTAVAIL; } pchan->tx_payload = pchan->rx_payload + (size >> 1); @@ -1017,17 +982,11 @@ static int scpi_probe(struct platform_device *pdev) dev_err(dev, "failed to get channel%d err %d\n", idx, ret); } -err: - scpi_free_channels(dev, scpi_chan, idx); - scpi_info = NULL; return ret; } - scpi_info->channels = scpi_chan; - scpi_info->num_chans = count; scpi_info->commands = scpi_std_commands; - - platform_set_drvdata(pdev, scpi_info); + scpi_info->scpi_ops = &scpi_ops; if (scpi_info->is_legacy) { /* Replace with legacy variants */ @@ -1043,23 +1002,23 @@ err: ret = scpi_init_versions(scpi_info); if (ret) { dev_err(dev, "incorrect or no SCP firmware found\n"); - scpi_remove(pdev); return ret; } - _dev_info(dev, "SCP Protocol %d.%d Firmware %d.%d.%d version\n", - PROTOCOL_REV_MAJOR(scpi_info->protocol_version), - PROTOCOL_REV_MINOR(scpi_info->protocol_version), - FW_REV_MAJOR(scpi_info->firmware_version), - FW_REV_MINOR(scpi_info->firmware_version), - FW_REV_PATCH(scpi_info->firmware_version)); - scpi_info->scpi_ops = &scpi_ops; + scpi_dvfs_populate(dev); + + _dev_info(dev, "SCP Protocol %lu.%lu Firmware %lu.%lu.%lu version\n", + FIELD_GET(PROTO_REV_MAJOR_MASK, scpi_info->protocol_version), + FIELD_GET(PROTO_REV_MINOR_MASK, scpi_info->protocol_version), + FIELD_GET(FW_REV_MAJOR_MASK, scpi_info->firmware_version), + FIELD_GET(FW_REV_MINOR_MASK, scpi_info->firmware_version), + FIELD_GET(FW_REV_PATCH_MASK, scpi_info->firmware_version)); - ret = sysfs_create_groups(&dev->kobj, versions_groups); + ret = devm_device_add_groups(dev, versions_groups); if (ret) dev_err(dev, "unable to create sysfs version group\n"); - return of_platform_populate(dev->of_node, NULL, NULL, dev); + return devm_of_platform_populate(dev); } static const struct of_device_id scpi_of_match[] = { @@ -1076,7 +1035,6 @@ static struct platform_driver scpi_driver = { .of_match_table = scpi_of_match, }, .probe = scpi_probe, - .remove = scpi_remove, }; module_platform_driver(scpi_driver); diff --git a/drivers/firmware/psci_checker.c b/drivers/firmware/psci_checker.c index 6523ce962865..56cf825ed779 100644 --- a/drivers/firmware/psci_checker.c +++ b/drivers/firmware/psci_checker.c @@ -340,6 +340,7 @@ static int suspend_test_thread(void *arg) * later. */ del_timer(&wakeup_timer); + destroy_timer_on_stack(&wakeup_timer); if (atomic_dec_return_relaxed(&nb_active_threads) == 0) complete(&suspend_threads_done); diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c index 93e3b96b6dfa..68b2033bc30e 100644 --- a/drivers/firmware/qcom_scm-32.c +++ b/drivers/firmware/qcom_scm-32.c @@ -561,6 +561,12 @@ int __qcom_scm_pas_mss_reset(struct device *dev, bool reset) return ret ? : le32_to_cpu(out); } +int __qcom_scm_set_dload_mode(struct device *dev, bool enable) +{ + return qcom_scm_call_atomic2(QCOM_SCM_SVC_BOOT, QCOM_SCM_SET_DLOAD_MODE, + enable ? QCOM_SCM_SET_DLOAD_MODE : 0, 0); +} + int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id) { struct { @@ -596,3 +602,21 @@ int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr, u32 size, { return -ENODEV; } + +int __qcom_scm_io_readl(struct device *dev, phys_addr_t addr, + unsigned int *val) +{ + int ret; + + ret = qcom_scm_call_atomic1(QCOM_SCM_SVC_IO, QCOM_SCM_IO_READ, addr); + if (ret >= 0) + *val = ret; + + return ret < 0 ? ret : 0; +} + +int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val) +{ + return qcom_scm_call_atomic2(QCOM_SCM_SVC_IO, QCOM_SCM_IO_WRITE, + addr, val); +} diff --git a/drivers/firmware/qcom_scm-64.c b/drivers/firmware/qcom_scm-64.c index 6e6d561708e2..3fea6f563ca9 100644 --- a/drivers/firmware/qcom_scm-64.c +++ b/drivers/firmware/qcom_scm-64.c @@ -439,3 +439,47 @@ int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr, u32 size, return ret; } + +int __qcom_scm_set_dload_mode(struct device *dev, bool enable) +{ + struct qcom_scm_desc desc = {0}; + struct arm_smccc_res res; + + desc.args[0] = QCOM_SCM_SET_DLOAD_MODE; + desc.args[1] = enable ? QCOM_SCM_SET_DLOAD_MODE : 0; + desc.arginfo = QCOM_SCM_ARGS(2); + + return qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_SET_DLOAD_MODE, + &desc, &res); +} + +int __qcom_scm_io_readl(struct device *dev, phys_addr_t addr, + unsigned int *val) +{ + struct qcom_scm_desc desc = {0}; + struct arm_smccc_res res; + int ret; + + desc.args[0] = addr; + desc.arginfo = QCOM_SCM_ARGS(1); + + ret = qcom_scm_call(dev, QCOM_SCM_SVC_IO, QCOM_SCM_IO_READ, + &desc, &res); + if (ret >= 0) + *val = res.a1; + + return ret < 0 ? ret : 0; +} + +int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val) +{ + struct qcom_scm_desc desc = {0}; + struct arm_smccc_res res; + + desc.args[0] = addr; + desc.args[1] = val; + desc.arginfo = QCOM_SCM_ARGS(2); + + return qcom_scm_call(dev, QCOM_SCM_SVC_IO, QCOM_SCM_IO_WRITE, + &desc, &res); +} diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index bb16510d75ba..9064e559a01f 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -19,15 +19,20 @@ #include <linux/cpumask.h> #include <linux/export.h> #include <linux/dma-mapping.h> +#include <linux/module.h> #include <linux/types.h> #include <linux/qcom_scm.h> #include <linux/of.h> +#include <linux/of_address.h> #include <linux/of_platform.h> #include <linux/clk.h> #include <linux/reset-controller.h> #include "qcom_scm.h" +static bool download_mode = IS_ENABLED(CONFIG_QCOM_SCM_DOWNLOAD_MODE_DEFAULT); +module_param(download_mode, bool, 0); + #define SCM_HAS_CORE_CLK BIT(0) #define SCM_HAS_IFACE_CLK BIT(1) #define SCM_HAS_BUS_CLK BIT(2) @@ -38,6 +43,8 @@ struct qcom_scm { struct clk *iface_clk; struct clk *bus_clk; struct reset_controller_dev reset; + + u64 dload_mode_addr; }; static struct qcom_scm *__scm; @@ -333,6 +340,66 @@ int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare) } EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_init); +int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val) +{ + return __qcom_scm_io_readl(__scm->dev, addr, val); +} +EXPORT_SYMBOL(qcom_scm_io_readl); + +int qcom_scm_io_writel(phys_addr_t addr, unsigned int val) +{ + return __qcom_scm_io_writel(__scm->dev, addr, val); +} +EXPORT_SYMBOL(qcom_scm_io_writel); + +static void qcom_scm_set_download_mode(bool enable) +{ + bool avail; + int ret = 0; + + avail = __qcom_scm_is_call_available(__scm->dev, + QCOM_SCM_SVC_BOOT, + QCOM_SCM_SET_DLOAD_MODE); + if (avail) { + ret = __qcom_scm_set_dload_mode(__scm->dev, enable); + } else if (__scm->dload_mode_addr) { + ret = __qcom_scm_io_writel(__scm->dev, __scm->dload_mode_addr, + enable ? QCOM_SCM_SET_DLOAD_MODE : 0); + } else { + dev_err(__scm->dev, + "No available mechanism for setting download mode\n"); + } + + if (ret) + dev_err(__scm->dev, "failed to set download mode: %d\n", ret); +} + +static int qcom_scm_find_dload_address(struct device *dev, u64 *addr) +{ + struct device_node *tcsr; + struct device_node *np = dev->of_node; + struct resource res; + u32 offset; + int ret; + + tcsr = of_parse_phandle(np, "qcom,dload-mode", 0); + if (!tcsr) + return 0; + + ret = of_address_to_resource(tcsr, 0, &res); + of_node_put(tcsr); + if (ret) + return ret; + + ret = of_property_read_u32_index(np, "qcom,dload-mode", 1, &offset); + if (ret < 0) + return ret; + + *addr = res.start + offset; + + return 0; +} + /** * qcom_scm_is_available() - Checks if SCM is available */ @@ -358,6 +425,10 @@ static int qcom_scm_probe(struct platform_device *pdev) if (!scm) return -ENOMEM; + ret = qcom_scm_find_dload_address(&pdev->dev, &scm->dload_mode_addr); + if (ret < 0) + return ret; + clks = (unsigned long)of_device_get_match_data(&pdev->dev); if (clks & SCM_HAS_CORE_CLK) { scm->core_clk = devm_clk_get(&pdev->dev, "core"); @@ -406,9 +477,24 @@ static int qcom_scm_probe(struct platform_device *pdev) __qcom_scm_init(); + /* + * If requested enable "download mode", from this point on warmboot + * will cause the the boot stages to enter download mode, unless + * disabled below by a clean shutdown/reboot. + */ + if (download_mode) + qcom_scm_set_download_mode(true); + return 0; } +static void qcom_scm_shutdown(struct platform_device *pdev) +{ + /* Clean shutdown, disable download mode to allow normal restart */ + if (download_mode) + qcom_scm_set_download_mode(false); +} + static const struct of_device_id qcom_scm_dt_match[] = { { .compatible = "qcom,scm-apq8064", /* FIXME: This should have .data = (void *) SCM_HAS_CORE_CLK */ @@ -436,6 +522,7 @@ static struct platform_driver qcom_scm_driver = { .of_match_table = qcom_scm_dt_match, }, .probe = qcom_scm_probe, + .shutdown = qcom_scm_shutdown, }; static int __init qcom_scm_init(void) diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h index 9bea691f30fb..83f171c23943 100644 --- a/drivers/firmware/qcom_scm.h +++ b/drivers/firmware/qcom_scm.h @@ -14,9 +14,11 @@ #define QCOM_SCM_SVC_BOOT 0x1 #define QCOM_SCM_BOOT_ADDR 0x1 +#define QCOM_SCM_SET_DLOAD_MODE 0x10 #define QCOM_SCM_BOOT_ADDR_MC 0x11 #define QCOM_SCM_SET_REMOTE_STATE 0xa extern int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id); +extern int __qcom_scm_set_dload_mode(struct device *dev, bool enable); #define QCOM_SCM_FLAG_HLOS 0x01 #define QCOM_SCM_FLAG_COLDBOOT_MC 0x02 @@ -30,6 +32,12 @@ extern int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus); #define QCOM_SCM_CMD_CORE_HOTPLUGGED 0x10 extern void __qcom_scm_cpu_power_down(u32 flags); +#define QCOM_SCM_SVC_IO 0x5 +#define QCOM_SCM_IO_READ 0x1 +#define QCOM_SCM_IO_WRITE 0x2 +extern int __qcom_scm_io_readl(struct device *dev, phys_addr_t addr, unsigned int *val); +extern int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val); + #define QCOM_SCM_SVC_INFO 0x6 #define QCOM_IS_CALL_AVAIL_CMD 0x1 extern int __qcom_scm_is_call_available(struct device *dev, u32 svc_id, diff --git a/drivers/firmware/tegra/Makefile b/drivers/firmware/tegra/Makefile index e34a2f79e1ad..1b826dcca719 100644 --- a/drivers/firmware/tegra/Makefile +++ b/drivers/firmware/tegra/Makefile @@ -1,2 +1,4 @@ -obj-$(CONFIG_TEGRA_BPMP) += bpmp.o +tegra-bpmp-y = bpmp.o +tegra-bpmp-$(CONFIG_DEBUG_FS) += bpmp-debugfs.o +obj-$(CONFIG_TEGRA_BPMP) += tegra-bpmp.o obj-$(CONFIG_TEGRA_IVC) += ivc.o diff --git a/drivers/firmware/tegra/bpmp-debugfs.c b/drivers/firmware/tegra/bpmp-debugfs.c new file mode 100644 index 000000000000..f7f6a0a5cb07 --- /dev/null +++ b/drivers/firmware/tegra/bpmp-debugfs.c @@ -0,0 +1,444 @@ +/* + * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + */ +#include <linux/debugfs.h> +#include <linux/dma-mapping.h> +#include <linux/uaccess.h> + +#include <soc/tegra/bpmp.h> +#include <soc/tegra/bpmp-abi.h> + +struct seqbuf { + char *buf; + size_t pos; + size_t size; +}; + +static void seqbuf_init(struct seqbuf *seqbuf, void *buf, size_t size) +{ + seqbuf->buf = buf; + seqbuf->size = size; + seqbuf->pos = 0; +} + +static size_t seqbuf_avail(struct seqbuf *seqbuf) +{ + return seqbuf->pos < seqbuf->size ? seqbuf->size - seqbuf->pos : 0; +} + +static size_t seqbuf_status(struct seqbuf *seqbuf) +{ + return seqbuf->pos <= seqbuf->size ? 0 : -EOVERFLOW; +} + +static int seqbuf_eof(struct seqbuf *seqbuf) +{ + return seqbuf->pos >= seqbuf->size; +} + +static int seqbuf_read(struct seqbuf *seqbuf, void *buf, size_t nbyte) +{ + nbyte = min(nbyte, seqbuf_avail(seqbuf)); + memcpy(buf, seqbuf->buf + seqbuf->pos, nbyte); + seqbuf->pos += nbyte; + return seqbuf_status(seqbuf); +} + +static int seqbuf_read_u32(struct seqbuf *seqbuf, uint32_t *v) +{ + int err; + + err = seqbuf_read(seqbuf, v, 4); + *v = le32_to_cpu(*v); + return err; +} + +static int seqbuf_read_str(struct seqbuf *seqbuf, const char **str) +{ + *str = seqbuf->buf + seqbuf->pos; + seqbuf->pos += strnlen(*str, seqbuf_avail(seqbuf)); + seqbuf->pos++; + return seqbuf_status(seqbuf); +} + +static void seqbuf_seek(struct seqbuf *seqbuf, ssize_t offset) +{ + seqbuf->pos += offset; +} + +/* map filename in Linux debugfs to corresponding entry in BPMP */ +static const char *get_filename(struct tegra_bpmp *bpmp, + const struct file *file, char *buf, int size) +{ + char root_path_buf[512]; + const char *root_path; + const char *filename; + size_t root_len; + + root_path = dentry_path(bpmp->debugfs_mirror, root_path_buf, + sizeof(root_path_buf)); + if (IS_ERR(root_path)) + return NULL; + + root_len = strlen(root_path); + + filename = dentry_path(file->f_path.dentry, buf, size); + if (IS_ERR(filename)) + return NULL; + + if (strlen(filename) < root_len || + strncmp(filename, root_path, root_len)) + return NULL; + + filename += root_len; + + return filename; +} + +static int mrq_debugfs_read(struct tegra_bpmp *bpmp, + dma_addr_t name, size_t sz_name, + dma_addr_t data, size_t sz_data, + size_t *nbytes) +{ + struct mrq_debugfs_request req = { + .cmd = cpu_to_le32(CMD_DEBUGFS_READ), + .fop = { + .fnameaddr = cpu_to_le32((uint32_t)name), + .fnamelen = cpu_to_le32((uint32_t)sz_name), + .dataaddr = cpu_to_le32((uint32_t)data), + .datalen = cpu_to_le32((uint32_t)sz_data), + }, + }; + struct mrq_debugfs_response resp; + struct tegra_bpmp_message msg = { + .mrq = MRQ_DEBUGFS, + .tx = { + .data = &req, + .size = sizeof(req), + }, + .rx = { + .data = &resp, + .size = sizeof(resp), + }, + }; + int err; + + err = tegra_bpmp_transfer(bpmp, &msg); + if (err < 0) + return err; + + *nbytes = (size_t)resp.fop.nbytes; + + return 0; +} + +static int mrq_debugfs_write(struct tegra_bpmp *bpmp, + dma_addr_t name, size_t sz_name, + dma_addr_t data, size_t sz_data) +{ + const struct mrq_debugfs_request req = { + .cmd = cpu_to_le32(CMD_DEBUGFS_WRITE), + .fop = { + .fnameaddr = cpu_to_le32((uint32_t)name), + .fnamelen = cpu_to_le32((uint32_t)sz_name), + .dataaddr = cpu_to_le32((uint32_t)data), + .datalen = cpu_to_le32((uint32_t)sz_data), + }, + }; + struct tegra_bpmp_message msg = { + .mrq = MRQ_DEBUGFS, + .tx = { + .data = &req, + .size = sizeof(req), + }, + }; + + return tegra_bpmp_transfer(bpmp, &msg); +} + +static int mrq_debugfs_dumpdir(struct tegra_bpmp *bpmp, dma_addr_t addr, + size_t size, size_t *nbytes) +{ + const struct mrq_debugfs_request req = { + .cmd = cpu_to_le32(CMD_DEBUGFS_DUMPDIR), + .dumpdir = { + .dataaddr = cpu_to_le32((uint32_t)addr), + .datalen = cpu_to_le32((uint32_t)size), + }, + }; + struct mrq_debugfs_response resp; + struct tegra_bpmp_message msg = { + .mrq = MRQ_DEBUGFS, + .tx = { + .data = &req, + .size = sizeof(req), + }, + .rx = { + .data = &resp, + .size = sizeof(resp), + }, + }; + int err; + + err = tegra_bpmp_transfer(bpmp, &msg); + if (err < 0) + return err; + + *nbytes = (size_t)resp.dumpdir.nbytes; + + return 0; +} + +static int debugfs_show(struct seq_file *m, void *p) +{ + struct file *file = m->private; + struct inode *inode = file_inode(file); + struct tegra_bpmp *bpmp = inode->i_private; + const size_t datasize = m->size; + const size_t namesize = SZ_256; + void *datavirt, *namevirt; + dma_addr_t dataphys, namephys; + char buf[256]; + const char *filename; + size_t len, nbytes; + int ret; + + filename = get_filename(bpmp, file, buf, sizeof(buf)); + if (!filename) + return -ENOENT; + + namevirt = dma_alloc_coherent(bpmp->dev, namesize, &namephys, + GFP_KERNEL | GFP_DMA32); + if (!namevirt) + return -ENOMEM; + + datavirt = dma_alloc_coherent(bpmp->dev, datasize, &dataphys, + GFP_KERNEL | GFP_DMA32); + if (!datavirt) { + ret = -ENOMEM; + goto free_namebuf; + } + + len = strlen(filename); + strncpy(namevirt, filename, namesize); + + ret = mrq_debugfs_read(bpmp, namephys, len, dataphys, datasize, + &nbytes); + + if (!ret) + seq_write(m, datavirt, nbytes); + + dma_free_coherent(bpmp->dev, datasize, datavirt, dataphys); +free_namebuf: + dma_free_coherent(bpmp->dev, namesize, namevirt, namephys); + + return ret; +} + +static int debugfs_open(struct inode *inode, struct file *file) +{ + return single_open_size(file, debugfs_show, file, SZ_128K); +} + +static ssize_t debugfs_store(struct file *file, const char __user *buf, + size_t count, loff_t *f_pos) +{ + struct inode *inode = file_inode(file); + struct tegra_bpmp *bpmp = inode->i_private; + const size_t datasize = count; + const size_t namesize = SZ_256; + void *datavirt, *namevirt; + dma_addr_t dataphys, namephys; + char fnamebuf[256]; + const char *filename; + size_t len; + int ret; + + filename = get_filename(bpmp, file, fnamebuf, sizeof(fnamebuf)); + if (!filename) + return -ENOENT; + + namevirt = dma_alloc_coherent(bpmp->dev, namesize, &namephys, + GFP_KERNEL | GFP_DMA32); + if (!namevirt) + return -ENOMEM; + + datavirt = dma_alloc_coherent(bpmp->dev, datasize, &dataphys, + GFP_KERNEL | GFP_DMA32); + if (!datavirt) { + ret = -ENOMEM; + goto free_namebuf; + } + + len = strlen(filename); + strncpy(namevirt, filename, namesize); + + if (copy_from_user(datavirt, buf, count)) { + ret = -EFAULT; + goto free_databuf; + } + + ret = mrq_debugfs_write(bpmp, namephys, len, dataphys, + count); + +free_databuf: + dma_free_coherent(bpmp->dev, datasize, datavirt, dataphys); +free_namebuf: + dma_free_coherent(bpmp->dev, namesize, namevirt, namephys); + + return ret ?: count; +} + +static const struct file_operations debugfs_fops = { + .open = debugfs_open, + .read = seq_read, + .llseek = seq_lseek, + .write = debugfs_store, + .release = single_release, +}; + +static int bpmp_populate_dir(struct tegra_bpmp *bpmp, struct seqbuf *seqbuf, + struct dentry *parent, uint32_t depth) +{ + int err; + uint32_t d, t; + const char *name; + struct dentry *dentry; + + while (!seqbuf_eof(seqbuf)) { + err = seqbuf_read_u32(seqbuf, &d); + if (err < 0) + return err; + + if (d < depth) { + seqbuf_seek(seqbuf, -4); + /* go up a level */ + return 0; + } else if (d != depth) { + /* malformed data received from BPMP */ + return -EIO; + } + + err = seqbuf_read_u32(seqbuf, &t); + if (err < 0) + return err; + err = seqbuf_read_str(seqbuf, &name); + if (err < 0) + return err; + + if (t & DEBUGFS_S_ISDIR) { + dentry = debugfs_create_dir(name, parent); + if (!dentry) + return -ENOMEM; + err = bpmp_populate_dir(bpmp, seqbuf, dentry, depth+1); + if (err < 0) + return err; + } else { + umode_t mode; + + mode = t & DEBUGFS_S_IRUSR ? S_IRUSR : 0; + mode |= t & DEBUGFS_S_IWUSR ? S_IWUSR : 0; + dentry = debugfs_create_file(name, mode, + parent, bpmp, + &debugfs_fops); + if (!dentry) + return -ENOMEM; + } + } + + return 0; +} + +static int create_debugfs_mirror(struct tegra_bpmp *bpmp, void *buf, + size_t bufsize, struct dentry *root) +{ + struct seqbuf seqbuf; + int err; + + bpmp->debugfs_mirror = debugfs_create_dir("debug", root); + if (!bpmp->debugfs_mirror) + return -ENOMEM; + + seqbuf_init(&seqbuf, buf, bufsize); + err = bpmp_populate_dir(bpmp, &seqbuf, bpmp->debugfs_mirror, 0); + if (err < 0) { + debugfs_remove_recursive(bpmp->debugfs_mirror); + bpmp->debugfs_mirror = NULL; + } + + return err; +} + +static int mrq_is_supported(struct tegra_bpmp *bpmp, unsigned int mrq) +{ + struct mrq_query_abi_request req = { .mrq = cpu_to_le32(mrq) }; + struct mrq_query_abi_response resp; + struct tegra_bpmp_message msg = { + .mrq = MRQ_QUERY_ABI, + .tx = { + .data = &req, + .size = sizeof(req), + }, + .rx = { + .data = &resp, + .size = sizeof(resp), + }, + }; + int ret; + + ret = tegra_bpmp_transfer(bpmp, &msg); + if (ret < 0) { + /* something went wrong; assume not supported */ + dev_warn(bpmp->dev, "tegra_bpmp_transfer failed (%d)\n", ret); + return 0; + } + + return resp.status ? 0 : 1; +} + +int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp) +{ + dma_addr_t phys; + void *virt; + const size_t sz = SZ_256K; + size_t nbytes; + int ret; + struct dentry *root; + + if (!mrq_is_supported(bpmp, MRQ_DEBUGFS)) + return 0; + + root = debugfs_create_dir("bpmp", NULL); + if (!root) + return -ENOMEM; + + virt = dma_alloc_coherent(bpmp->dev, sz, &phys, + GFP_KERNEL | GFP_DMA32); + if (!virt) { + ret = -ENOMEM; + goto out; + } + + ret = mrq_debugfs_dumpdir(bpmp, phys, sz, &nbytes); + if (ret < 0) + goto free; + + ret = create_debugfs_mirror(bpmp, virt, nbytes, root); +free: + dma_free_coherent(bpmp->dev, sz, virt, phys); +out: + if (ret < 0) + debugfs_remove(root); + + return ret; +} diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c index 73ca55b7b7ec..a7f461f2e650 100644 --- a/drivers/firmware/tegra/bpmp.c +++ b/drivers/firmware/tegra/bpmp.c @@ -194,16 +194,24 @@ static int tegra_bpmp_wait_master_free(struct tegra_bpmp_channel *channel) } static ssize_t __tegra_bpmp_channel_read(struct tegra_bpmp_channel *channel, - void *data, size_t size) + void *data, size_t size, int *ret) { + int err; + if (data && size > 0) memcpy(data, channel->ib->data, size); - return tegra_ivc_read_advance(channel->ivc); + err = tegra_ivc_read_advance(channel->ivc); + if (err < 0) + return err; + + *ret = channel->ib->code; + + return 0; } static ssize_t tegra_bpmp_channel_read(struct tegra_bpmp_channel *channel, - void *data, size_t size) + void *data, size_t size, int *ret) { struct tegra_bpmp *bpmp = channel->bpmp; unsigned long flags; @@ -217,7 +225,7 @@ static ssize_t tegra_bpmp_channel_read(struct tegra_bpmp_channel *channel, } spin_lock_irqsave(&bpmp->lock, flags); - err = __tegra_bpmp_channel_read(channel, data, size); + err = __tegra_bpmp_channel_read(channel, data, size, ret); clear_bit(index, bpmp->threaded.allocated); spin_unlock_irqrestore(&bpmp->lock, flags); @@ -337,7 +345,8 @@ int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp, if (err < 0) return err; - return __tegra_bpmp_channel_read(channel, msg->rx.data, msg->rx.size); + return __tegra_bpmp_channel_read(channel, msg->rx.data, msg->rx.size, + &msg->rx.ret); } EXPORT_SYMBOL_GPL(tegra_bpmp_transfer_atomic); @@ -371,7 +380,8 @@ int tegra_bpmp_transfer(struct tegra_bpmp *bpmp, if (err == 0) return -ETIMEDOUT; - return tegra_bpmp_channel_read(channel, msg->rx.data, msg->rx.size); + return tegra_bpmp_channel_read(channel, msg->rx.data, msg->rx.size, + &msg->rx.ret); } EXPORT_SYMBOL_GPL(tegra_bpmp_transfer); @@ -387,8 +397,8 @@ static struct tegra_bpmp_mrq *tegra_bpmp_find_mrq(struct tegra_bpmp *bpmp, return NULL; } -static void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, - int code, const void *data, size_t size) +void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, int code, + const void *data, size_t size) { unsigned long flags = channel->ib->flags; struct tegra_bpmp *bpmp = channel->bpmp; @@ -426,6 +436,7 @@ static void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, mbox_client_txdone(bpmp->mbox.channel, 0); } } +EXPORT_SYMBOL_GPL(tegra_bpmp_mrq_return); static void tegra_bpmp_handle_mrq(struct tegra_bpmp *bpmp, unsigned int mrq, @@ -824,6 +835,10 @@ static int tegra_bpmp_probe(struct platform_device *pdev) if (err < 0) goto free_mrq; + err = tegra_bpmp_init_debugfs(bpmp); + if (err < 0) + dev_err(&pdev->dev, "debugfs initialization failed: %d\n", err); + return 0; free_mrq: diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c index 00cfed3c3e1a..23b12d99ddfe 100644 --- a/drivers/firmware/ti_sci.c +++ b/drivers/firmware/ti_sci.c @@ -439,7 +439,7 @@ static inline int ti_sci_do_xfer(struct ti_sci_info *info, /* And we wait for the response. */ timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms); if (!wait_for_completion_timeout(&xfer->done, timeout)) { - dev_err(dev, "Mbox timedout in resp(caller: %pF)\n", + dev_err(dev, "Mbox timedout in resp(caller: %pS)\n", (void *)_RET_IP_); ret = -ETIMEDOUT; } diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile index 470b93e3858d..929a601d4cd1 100644 --- a/drivers/memory/Makefile +++ b/drivers/memory/Makefile @@ -9,6 +9,7 @@ endif obj-$(CONFIG_ARM_PL172_MPMC) += pl172.o obj-$(CONFIG_ATMEL_SDRAMC) += atmel-sdramc.o obj-$(CONFIG_ATMEL_EBI) += atmel-ebi.o +obj-$(CONFIG_ARCH_BRCMSTB) += brcmstb_dpfe.o obj-$(CONFIG_TI_AEMIF) += ti-aemif.o obj-$(CONFIG_TI_EMIF) += emif.o obj-$(CONFIG_OMAP_GPMC) += omap-gpmc.o diff --git a/drivers/memory/brcmstb_dpfe.c b/drivers/memory/brcmstb_dpfe.c new file mode 100644 index 000000000000..0a7bdbed3a6f --- /dev/null +++ b/drivers/memory/brcmstb_dpfe.c @@ -0,0 +1,722 @@ +/* + * DDR PHY Front End (DPFE) driver for Broadcom set top box SoCs + * + * Copyright (c) 2017 Broadcom + * + * Released under the GPLv2 only. + * SPDX-License-Identifier: GPL-2.0 + */ + +/* + * This driver provides access to the DPFE interface of Broadcom STB SoCs. + * The firmware running on the DCPU inside the DDR PHY can provide current + * information about the system's RAM, for instance the DRAM refresh rate. + * This can be used as an indirect indicator for the DRAM's temperature. + * Slower refresh rate means cooler RAM, higher refresh rate means hotter + * RAM. + * + * Throughout the driver, we use readl_relaxed() and writel_relaxed(), which + * already contain the appropriate le32_to_cpu()/cpu_to_le32() calls. + * + * Note regarding the loading of the firmware image: we use be32_to_cpu() + * and le_32_to_cpu(), so we can support the following four cases: + * - LE kernel + LE firmware image (the most common case) + * - LE kernel + BE firmware image + * - BE kernel + LE firmware image + * - BE kernel + BE firmware image + * + * The DPCU always runs in big endian mode. The firwmare image, however, can + * be in either format. Also, communication between host CPU and DCPU is + * always in little endian. + */ + +#include <linux/delay.h> +#include <linux/firmware.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of_address.h> +#include <linux/platform_device.h> + +#define DRVNAME "brcmstb-dpfe" +#define FIRMWARE_NAME "dpfe.bin" + +/* DCPU register offsets */ +#define REG_DCPU_RESET 0x0 +#define REG_TO_DCPU_MBOX 0x10 +#define REG_TO_HOST_MBOX 0x14 + +/* Message RAM */ +#define DCPU_MSG_RAM(x) (0x100 + (x) * sizeof(u32)) + +/* DRAM Info Offsets & Masks */ +#define DRAM_INFO_INTERVAL 0x0 +#define DRAM_INFO_MR4 0x4 +#define DRAM_INFO_ERROR 0x8 +#define DRAM_INFO_MR4_MASK 0xff + +/* DRAM MR4 Offsets & Masks */ +#define DRAM_MR4_REFRESH 0x0 /* Refresh rate */ +#define DRAM_MR4_SR_ABORT 0x3 /* Self Refresh Abort */ +#define DRAM_MR4_PPRE 0x4 /* Post-package repair entry/exit */ +#define DRAM_MR4_TH_OFFS 0x5 /* Thermal Offset; vendor specific */ +#define DRAM_MR4_TUF 0x7 /* Temperature Update Flag */ + +#define DRAM_MR4_REFRESH_MASK 0x7 +#define DRAM_MR4_SR_ABORT_MASK 0x1 +#define DRAM_MR4_PPRE_MASK 0x1 +#define DRAM_MR4_TH_OFFS_MASK 0x3 +#define DRAM_MR4_TUF_MASK 0x1 + +/* DRAM Vendor Offsets & Masks */ +#define DRAM_VENDOR_MR5 0x0 +#define DRAM_VENDOR_MR6 0x4 +#define DRAM_VENDOR_MR7 0x8 +#define DRAM_VENDOR_MR8 0xc +#define DRAM_VENDOR_ERROR 0x10 +#define DRAM_VENDOR_MASK 0xff + +/* Reset register bits & masks */ +#define DCPU_RESET_SHIFT 0x0 +#define DCPU_RESET_MASK 0x1 +#define DCPU_CLK_DISABLE_SHIFT 0x2 + +/* DCPU return codes */ +#define DCPU_RET_ERROR_BIT BIT(31) +#define DCPU_RET_SUCCESS 0x1 +#define DCPU_RET_ERR_HEADER (DCPU_RET_ERROR_BIT | BIT(0)) +#define DCPU_RET_ERR_INVAL (DCPU_RET_ERROR_BIT | BIT(1)) +#define DCPU_RET_ERR_CHKSUM (DCPU_RET_ERROR_BIT | BIT(2)) +#define DCPU_RET_ERR_COMMAND (DCPU_RET_ERROR_BIT | BIT(3)) +/* This error code is not firmware defined and only used in the driver. */ +#define DCPU_RET_ERR_TIMEDOUT (DCPU_RET_ERROR_BIT | BIT(4)) + +/* Firmware magic */ +#define DPFE_BE_MAGIC 0xfe1010fe +#define DPFE_LE_MAGIC 0xfe0101fe + +/* Error codes */ +#define ERR_INVALID_MAGIC -1 +#define ERR_INVALID_SIZE -2 +#define ERR_INVALID_CHKSUM -3 + +/* Message types */ +#define DPFE_MSG_TYPE_COMMAND 1 +#define DPFE_MSG_TYPE_RESPONSE 2 + +#define DELAY_LOOP_MAX 200000 + +enum dpfe_msg_fields { + MSG_HEADER, + MSG_COMMAND, + MSG_ARG_COUNT, + MSG_ARG0, + MSG_CHKSUM, + MSG_FIELD_MAX /* Last entry */ +}; + +enum dpfe_commands { + DPFE_CMD_GET_INFO, + DPFE_CMD_GET_REFRESH, + DPFE_CMD_GET_VENDOR, + DPFE_CMD_MAX /* Last entry */ +}; + +struct dpfe_msg { + u32 header; + u32 command; + u32 arg_count; + u32 arg0; + u32 chksum; /* This is the sum of all other entries. */ +}; + +/* + * Format of the binary firmware file: + * + * entry + * 0 header + * value: 0xfe0101fe <== little endian + * 0xfe1010fe <== big endian + * 1 sequence: + * [31:16] total segments on this build + * [15:0] this segment sequence. + * 2 FW version + * 3 IMEM byte size + * 4 DMEM byte size + * IMEM + * DMEM + * last checksum ==> sum of everything + */ +struct dpfe_firmware_header { + u32 magic; + u32 sequence; + u32 version; + u32 imem_size; + u32 dmem_size; +}; + +/* Things we only need during initialization. */ +struct init_data { + unsigned int dmem_len; + unsigned int imem_len; + unsigned int chksum; + bool is_big_endian; +}; + +/* Things we need for as long as we are active. */ +struct private_data { + void __iomem *regs; + void __iomem *dmem; + void __iomem *imem; + struct device *dev; + unsigned int index; + struct mutex lock; +}; + +static const char *error_text[] = { + "Success", "Header code incorrect", "Unknown command or argument", + "Incorrect checksum", "Malformed command", "Timed out", +}; + +/* List of supported firmware commands */ +static const u32 dpfe_commands[DPFE_CMD_MAX][MSG_FIELD_MAX] = { + [DPFE_CMD_GET_INFO] = { + [MSG_HEADER] = DPFE_MSG_TYPE_COMMAND, + [MSG_COMMAND] = 1, + [MSG_ARG_COUNT] = 1, + [MSG_ARG0] = 1, + [MSG_CHKSUM] = 4, + }, + [DPFE_CMD_GET_REFRESH] = { + [MSG_HEADER] = DPFE_MSG_TYPE_COMMAND, + [MSG_COMMAND] = 2, + [MSG_ARG_COUNT] = 1, + [MSG_ARG0] = 1, + [MSG_CHKSUM] = 5, + }, + [DPFE_CMD_GET_VENDOR] = { + [MSG_HEADER] = DPFE_MSG_TYPE_COMMAND, + [MSG_COMMAND] = 2, + [MSG_ARG_COUNT] = 1, + [MSG_ARG0] = 2, + [MSG_CHKSUM] = 6, + }, +}; + +static bool is_dcpu_enabled(void __iomem *regs) +{ + u32 val; + + val = readl_relaxed(regs + REG_DCPU_RESET); + + return !(val & DCPU_RESET_MASK); +} + +static void __disable_dcpu(void __iomem *regs) +{ + u32 val; + + if (!is_dcpu_enabled(regs)) + return; + + /* Put DCPU in reset if it's running. */ + val = readl_relaxed(regs + REG_DCPU_RESET); + val |= (1 << DCPU_RESET_SHIFT); + writel_relaxed(val, regs + REG_DCPU_RESET); +} + +static void __enable_dcpu(void __iomem *regs) +{ + u32 val; + + /* Clear mailbox registers. */ + writel_relaxed(0, regs + REG_TO_DCPU_MBOX); + writel_relaxed(0, regs + REG_TO_HOST_MBOX); + + /* Disable DCPU clock gating */ + val = readl_relaxed(regs + REG_DCPU_RESET); + val &= ~(1 << DCPU_CLK_DISABLE_SHIFT); + writel_relaxed(val, regs + REG_DCPU_RESET); + + /* Take DCPU out of reset */ + val = readl_relaxed(regs + REG_DCPU_RESET); + val &= ~(1 << DCPU_RESET_SHIFT); + writel_relaxed(val, regs + REG_DCPU_RESET); +} + +static unsigned int get_msg_chksum(const u32 msg[]) +{ + unsigned int sum = 0; + unsigned int i; + + /* Don't include the last field in the checksum. */ + for (i = 0; i < MSG_FIELD_MAX - 1; i++) + sum += msg[i]; + + return sum; +} + +static int __send_command(struct private_data *priv, unsigned int cmd, + u32 result[]) +{ + const u32 *msg = dpfe_commands[cmd]; + void __iomem *regs = priv->regs; + unsigned int i, chksum; + int ret = 0; + u32 resp; + + if (cmd >= DPFE_CMD_MAX) + return -1; + + mutex_lock(&priv->lock); + + /* Write command and arguments to message area */ + for (i = 0; i < MSG_FIELD_MAX; i++) + writel_relaxed(msg[i], regs + DCPU_MSG_RAM(i)); + + /* Tell DCPU there is a command waiting */ + writel_relaxed(1, regs + REG_TO_DCPU_MBOX); + + /* Wait for DCPU to process the command */ + for (i = 0; i < DELAY_LOOP_MAX; i++) { + /* Read response code */ + resp = readl_relaxed(regs + REG_TO_HOST_MBOX); + if (resp > 0) + break; + udelay(5); + } + + if (i == DELAY_LOOP_MAX) { + resp = (DCPU_RET_ERR_TIMEDOUT & ~DCPU_RET_ERROR_BIT); + ret = -ffs(resp); + } else { + /* Read response data */ + for (i = 0; i < MSG_FIELD_MAX; i++) + result[i] = readl_relaxed(regs + DCPU_MSG_RAM(i)); + } + + /* Tell DCPU we are done */ + writel_relaxed(0, regs + REG_TO_HOST_MBOX); + + mutex_unlock(&priv->lock); + + if (ret) + return ret; + + /* Verify response */ + chksum = get_msg_chksum(result); + if (chksum != result[MSG_CHKSUM]) + resp = DCPU_RET_ERR_CHKSUM; + + if (resp != DCPU_RET_SUCCESS) { + resp &= ~DCPU_RET_ERROR_BIT; + ret = -ffs(resp); + } + + return ret; +} + +/* Ensure that the firmware file loaded meets all the requirements. */ +static int __verify_firmware(struct init_data *init, + const struct firmware *fw) +{ + const struct dpfe_firmware_header *header = (void *)fw->data; + unsigned int dmem_size, imem_size, total_size; + bool is_big_endian = false; + const u32 *chksum_ptr; + + if (header->magic == DPFE_BE_MAGIC) + is_big_endian = true; + else if (header->magic != DPFE_LE_MAGIC) + return ERR_INVALID_MAGIC; + + if (is_big_endian) { + dmem_size = be32_to_cpu(header->dmem_size); + imem_size = be32_to_cpu(header->imem_size); + } else { + dmem_size = le32_to_cpu(header->dmem_size); + imem_size = le32_to_cpu(header->imem_size); + } + + /* Data and instruction sections are 32 bit words. */ + if ((dmem_size % sizeof(u32)) != 0 || (imem_size % sizeof(u32)) != 0) + return ERR_INVALID_SIZE; + + /* + * The header + the data section + the instruction section + the + * checksum must be equal to the total firmware size. + */ + total_size = dmem_size + imem_size + sizeof(*header) + + sizeof(*chksum_ptr); + if (total_size != fw->size) + return ERR_INVALID_SIZE; + + /* The checksum comes at the very end. */ + chksum_ptr = (void *)fw->data + sizeof(*header) + dmem_size + imem_size; + + init->is_big_endian = is_big_endian; + init->dmem_len = dmem_size; + init->imem_len = imem_size; + init->chksum = (is_big_endian) + ? be32_to_cpu(*chksum_ptr) : le32_to_cpu(*chksum_ptr); + + return 0; +} + +/* Verify checksum by reading back the firmware from co-processor RAM. */ +static int __verify_fw_checksum(struct init_data *init, + struct private_data *priv, + const struct dpfe_firmware_header *header, + u32 checksum) +{ + u32 magic, sequence, version, sum; + u32 __iomem *dmem = priv->dmem; + u32 __iomem *imem = priv->imem; + unsigned int i; + + if (init->is_big_endian) { + magic = be32_to_cpu(header->magic); + sequence = be32_to_cpu(header->sequence); + version = be32_to_cpu(header->version); + } else { + magic = le32_to_cpu(header->magic); + sequence = le32_to_cpu(header->sequence); + version = le32_to_cpu(header->version); + } + + sum = magic + sequence + version + init->dmem_len + init->imem_len; + + for (i = 0; i < init->dmem_len / sizeof(u32); i++) + sum += readl_relaxed(dmem + i); + + for (i = 0; i < init->imem_len / sizeof(u32); i++) + sum += readl_relaxed(imem + i); + + return (sum == checksum) ? 0 : -1; +} + +static int __write_firmware(u32 __iomem *mem, const u32 *fw, + unsigned int size, bool is_big_endian) +{ + unsigned int i; + + /* Convert size to 32-bit words. */ + size /= sizeof(u32); + + /* It is recommended to clear the firmware area first. */ + for (i = 0; i < size; i++) + writel_relaxed(0, mem + i); + + /* Now copy it. */ + if (is_big_endian) { + for (i = 0; i < size; i++) + writel_relaxed(be32_to_cpu(fw[i]), mem + i); + } else { + for (i = 0; i < size; i++) + writel_relaxed(le32_to_cpu(fw[i]), mem + i); + } + + return 0; +} + +static int brcmstb_dpfe_download_firmware(struct platform_device *pdev, + struct init_data *init) +{ + const struct dpfe_firmware_header *header; + unsigned int dmem_size, imem_size; + struct device *dev = &pdev->dev; + bool is_big_endian = false; + struct private_data *priv; + const struct firmware *fw; + const u32 *dmem, *imem; + const void *fw_blob; + int ret; + + priv = platform_get_drvdata(pdev); + + /* + * Skip downloading the firmware if the DCPU is already running and + * responding to commands. + */ + if (is_dcpu_enabled(priv->regs)) { + u32 response[MSG_FIELD_MAX]; + + ret = __send_command(priv, DPFE_CMD_GET_INFO, response); + if (!ret) + return 0; + } + + ret = request_firmware(&fw, FIRMWARE_NAME, dev); + /* request_firmware() prints its own error messages. */ + if (ret) + return ret; + + ret = __verify_firmware(init, fw); + if (ret) + return -EFAULT; + + __disable_dcpu(priv->regs); + + is_big_endian = init->is_big_endian; + dmem_size = init->dmem_len; + imem_size = init->imem_len; + + /* At the beginning of the firmware blob is a header. */ + header = (struct dpfe_firmware_header *)fw->data; + /* Void pointer to the beginning of the actual firmware. */ + fw_blob = fw->data + sizeof(*header); + /* IMEM comes right after the header. */ + imem = fw_blob; + /* DMEM follows after IMEM. */ + dmem = fw_blob + imem_size; + + ret = __write_firmware(priv->dmem, dmem, dmem_size, is_big_endian); + if (ret) + return ret; + ret = __write_firmware(priv->imem, imem, imem_size, is_big_endian); + if (ret) + return ret; + + ret = __verify_fw_checksum(init, priv, header, init->chksum); + if (ret) + return ret; + + __enable_dcpu(priv->regs); + + return 0; +} + +static ssize_t generic_show(unsigned int command, u32 response[], + struct device *dev, char *buf) +{ + struct private_data *priv; + int ret; + + priv = dev_get_drvdata(dev); + if (!priv) + return sprintf(buf, "ERROR: driver private data not set\n"); + + ret = __send_command(priv, command, response); + if (ret < 0) + return sprintf(buf, "ERROR: %s\n", error_text[-ret]); + + return 0; +} + +static ssize_t show_info(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + u32 response[MSG_FIELD_MAX]; + unsigned int info; + int ret; + + ret = generic_show(DPFE_CMD_GET_INFO, response, dev, buf); + if (ret) + return ret; + + info = response[MSG_ARG0]; + + return sprintf(buf, "%u.%u.%u.%u\n", + (info >> 24) & 0xff, + (info >> 16) & 0xff, + (info >> 8) & 0xff, + info & 0xff); +} + +static ssize_t show_refresh(struct device *dev, + struct device_attribute *devattr, char *buf) +{ + u32 response[MSG_FIELD_MAX]; + void __iomem *info; + struct private_data *priv; + unsigned int offset; + u8 refresh, sr_abort, ppre, thermal_offs, tuf; + u32 mr4; + int ret; + + ret = generic_show(DPFE_CMD_GET_REFRESH, response, dev, buf); + if (ret) + return ret; + + priv = dev_get_drvdata(dev); + offset = response[MSG_ARG0]; + info = priv->dmem + offset; + + mr4 = readl_relaxed(info + DRAM_INFO_MR4) & DRAM_INFO_MR4_MASK; + + refresh = (mr4 >> DRAM_MR4_REFRESH) & DRAM_MR4_REFRESH_MASK; + sr_abort = (mr4 >> DRAM_MR4_SR_ABORT) & DRAM_MR4_SR_ABORT_MASK; + ppre = (mr4 >> DRAM_MR4_PPRE) & DRAM_MR4_PPRE_MASK; + thermal_offs = (mr4 >> DRAM_MR4_TH_OFFS) & DRAM_MR4_TH_OFFS_MASK; + tuf = (mr4 >> DRAM_MR4_TUF) & DRAM_MR4_TUF_MASK; + + return sprintf(buf, "%#x %#x %#x %#x %#x %#x %#x\n", + readl_relaxed(info + DRAM_INFO_INTERVAL), + refresh, sr_abort, ppre, thermal_offs, tuf, + readl_relaxed(info + DRAM_INFO_ERROR)); +} + +static ssize_t store_refresh(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + u32 response[MSG_FIELD_MAX]; + struct private_data *priv; + void __iomem *info; + unsigned int offset; + unsigned long val; + int ret; + + if (kstrtoul(buf, 0, &val) < 0) + return -EINVAL; + + priv = dev_get_drvdata(dev); + + ret = __send_command(priv, DPFE_CMD_GET_REFRESH, response); + if (ret) + return ret; + + offset = response[MSG_ARG0]; + info = priv->dmem + offset; + writel_relaxed(val, info + DRAM_INFO_INTERVAL); + + return count; +} + +static ssize_t show_vendor(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + u32 response[MSG_FIELD_MAX]; + struct private_data *priv; + void __iomem *info; + unsigned int offset; + int ret; + + ret = generic_show(DPFE_CMD_GET_VENDOR, response, dev, buf); + if (ret) + return ret; + + offset = response[MSG_ARG0]; + priv = dev_get_drvdata(dev); + info = priv->dmem + offset; + + return sprintf(buf, "%#x %#x %#x %#x %#x\n", + readl_relaxed(info + DRAM_VENDOR_MR5) & DRAM_VENDOR_MASK, + readl_relaxed(info + DRAM_VENDOR_MR6) & DRAM_VENDOR_MASK, + readl_relaxed(info + DRAM_VENDOR_MR7) & DRAM_VENDOR_MASK, + readl_relaxed(info + DRAM_VENDOR_MR8) & DRAM_VENDOR_MASK, + readl_relaxed(info + DRAM_VENDOR_ERROR)); +} + +static int brcmstb_dpfe_resume(struct platform_device *pdev) +{ + struct init_data init; + + return brcmstb_dpfe_download_firmware(pdev, &init); +} + +static DEVICE_ATTR(dpfe_info, 0444, show_info, NULL); +static DEVICE_ATTR(dpfe_refresh, 0644, show_refresh, store_refresh); +static DEVICE_ATTR(dpfe_vendor, 0444, show_vendor, NULL); +static struct attribute *dpfe_attrs[] = { + &dev_attr_dpfe_info.attr, + &dev_attr_dpfe_refresh.attr, + &dev_attr_dpfe_vendor.attr, + NULL +}; +ATTRIBUTE_GROUPS(dpfe); + +static int brcmstb_dpfe_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct private_data *priv; + struct device *dpfe_dev; + struct init_data init; + struct resource *res; + u32 index; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + mutex_init(&priv->lock); + platform_set_drvdata(pdev, priv); + + /* Cell index is optional; default to 0 if not present. */ + ret = of_property_read_u32(dev->of_node, "cell-index", &index); + if (ret) + index = 0; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dpfe-cpu"); + priv->regs = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->regs)) { + dev_err(dev, "couldn't map DCPU registers\n"); + return -ENODEV; + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dpfe-dmem"); + priv->dmem = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->dmem)) { + dev_err(dev, "Couldn't map DCPU data memory\n"); + return -ENOENT; + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dpfe-imem"); + priv->imem = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->imem)) { + dev_err(dev, "Couldn't map DCPU instruction memory\n"); + return -ENOENT; + } + + ret = brcmstb_dpfe_download_firmware(pdev, &init); + if (ret) + goto err; + + dpfe_dev = devm_kzalloc(dev, sizeof(*dpfe_dev), GFP_KERNEL); + if (!dpfe_dev) { + ret = -ENOMEM; + goto err; + } + + priv->dev = dpfe_dev; + priv->index = index; + + dpfe_dev->parent = dev; + dpfe_dev->groups = dpfe_groups; + dpfe_dev->of_node = dev->of_node; + dev_set_drvdata(dpfe_dev, priv); + dev_set_name(dpfe_dev, "dpfe%u", index); + + ret = device_register(dpfe_dev); + if (ret) + goto err; + + dev_info(dev, "registered.\n"); + + return 0; + +err: + dev_err(dev, "failed to initialize -- error %d\n", ret); + + return ret; +} + +static const struct of_device_id brcmstb_dpfe_of_match[] = { + { .compatible = "brcm,dpfe-cpu", }, + {} +}; +MODULE_DEVICE_TABLE(of, brcmstb_dpfe_of_match); + +static struct platform_driver brcmstb_dpfe_driver = { + .driver = { + .name = DRVNAME, + .of_match_table = brcmstb_dpfe_of_match, + }, + .probe = brcmstb_dpfe_probe, + .resume = brcmstb_dpfe_resume, +}; + +module_platform_driver(brcmstb_dpfe_driver); + +MODULE_AUTHOR("Markus Mayer <mmayer@broadcom.com>"); +MODULE_DESCRIPTION("BRCMSTB DDR PHY Front End Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c index 7059bbda2fac..a385a35c7de9 100644 --- a/drivers/memory/omap-gpmc.c +++ b/drivers/memory/omap-gpmc.c @@ -1075,11 +1075,33 @@ int gpmc_configure(int cmd, int wval) } EXPORT_SYMBOL(gpmc_configure); -void gpmc_update_nand_reg(struct gpmc_nand_regs *reg, int cs) +static bool gpmc_nand_writebuffer_empty(void) +{ + if (gpmc_read_reg(GPMC_STATUS) & GPMC_STATUS_EMPTYWRITEBUFFERSTATUS) + return true; + + return false; +} + +static struct gpmc_nand_ops nand_ops = { + .nand_writebuffer_empty = gpmc_nand_writebuffer_empty, +}; + +/** + * gpmc_omap_get_nand_ops - Get the GPMC NAND interface + * @regs: the GPMC NAND register map exclusive for NAND use. + * @cs: GPMC chip select number on which the NAND sits. The + * register map returned will be specific to this chip select. + * + * Returns NULL on error e.g. invalid cs. + */ +struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *reg, int cs) { int i; - reg->gpmc_status = NULL; /* deprecated */ + if (cs >= gpmc_cs_num) + return NULL; + reg->gpmc_nand_command = gpmc_base + GPMC_CS0_OFFSET + GPMC_CS_NAND_COMMAND + GPMC_CS_SIZE * cs; reg->gpmc_nand_address = gpmc_base + GPMC_CS0_OFFSET + @@ -1111,34 +1133,6 @@ void gpmc_update_nand_reg(struct gpmc_nand_regs *reg, int cs) reg->gpmc_bch_result6[i] = gpmc_base + GPMC_ECC_BCH_RESULT_6 + i * GPMC_BCH_SIZE; } -} - -static bool gpmc_nand_writebuffer_empty(void) -{ - if (gpmc_read_reg(GPMC_STATUS) & GPMC_STATUS_EMPTYWRITEBUFFERSTATUS) - return true; - - return false; -} - -static struct gpmc_nand_ops nand_ops = { - .nand_writebuffer_empty = gpmc_nand_writebuffer_empty, -}; - -/** - * gpmc_omap_get_nand_ops - Get the GPMC NAND interface - * @regs: the GPMC NAND register map exclusive for NAND use. - * @cs: GPMC chip select number on which the NAND sits. The - * register map returned will be specific to this chip select. - * - * Returns NULL on error e.g. invalid cs. - */ -struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *reg, int cs) -{ - if (cs >= gpmc_cs_num) - return NULL; - - gpmc_update_nand_reg(reg, cs); return &nand_ops; } diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 32771c2ced7b..22b75c82e377 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -397,3 +397,29 @@ void of_reserved_mem_device_release(struct device *dev) rmem->ops->device_release(rmem, dev); } EXPORT_SYMBOL_GPL(of_reserved_mem_device_release); + +/** + * of_reserved_mem_lookup() - acquire reserved_mem from a device node + * @np: node pointer of the desired reserved-memory region + * + * This function allows drivers to acquire a reference to the reserved_mem + * struct based on a device node handle. + * + * Returns a reserved_mem reference, or NULL on error. + */ +struct reserved_mem *of_reserved_mem_lookup(struct device_node *np) +{ + const char *name; + int i; + + if (!np->full_name) + return NULL; + + name = kbasename(np->full_name); + for (i = 0; i < reserved_mem_count; i++) + if (!strcmp(reserved_mem[i].name, name)) + return &reserved_mem[i]; + + return NULL; +} +EXPORT_SYMBOL_GPL(of_reserved_mem_lookup); diff --git a/drivers/of/platform.c b/drivers/of/platform.c index ac15d0e3d27d..b7cf84b29737 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -497,6 +497,12 @@ int of_platform_default_populate(struct device_node *root, EXPORT_SYMBOL_GPL(of_platform_default_populate); #ifndef CONFIG_PPC +static const struct of_device_id reserved_mem_matches[] = { + { .compatible = "qcom,rmtfs-mem" }, + { .compatible = "ramoops" }, + {} +}; + static int __init of_platform_default_populate_init(void) { struct device_node *node; @@ -505,15 +511,12 @@ static int __init of_platform_default_populate_init(void) return -ENODEV; /* - * Handle ramoops explicitly, since it is inside /reserved-memory, - * which lacks a "compatible" property. + * Handle certain compatibles explicitly, since we don't want to create + * platform_devices for every node in /reserved-memory with a + * "compatible", */ - node = of_find_node_by_path("/reserved-memory"); - if (node) { - node = of_find_compatible_node(node, NULL, "ramoops"); - if (node) - of_platform_device_create(node, NULL, NULL); - } + for_each_matching_node(node, reserved_mem_matches) + of_platform_device_create(node, NULL, NULL); /* Populate everything else. */ of_platform_default_populate(NULL, NULL, NULL); diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index e2baecbb9dd3..7fc77696bb1e 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -28,6 +28,12 @@ config RESET_ATH79 This enables the ATH79 reset controller driver that supports the AR71xx SoC reset controller. +config RESET_AXS10X + bool "AXS10x Reset Driver" if COMPILE_TEST + default ARC_PLAT_AXS10X + help + This enables the reset controller driver for AXS10x. + config RESET_BERLIN bool "Berlin Reset Driver" if COMPILE_TEST default ARCH_BERLIN @@ -75,21 +81,21 @@ config RESET_PISTACHIO help This enables the reset driver for ImgTec Pistachio SoCs. -config RESET_SOCFPGA - bool "SoCFPGA Reset Driver" if COMPILE_TEST - default ARCH_SOCFPGA +config RESET_SIMPLE + bool "Simple Reset Controller Driver" if COMPILE_TEST + default ARCH_SOCFPGA || ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX help - This enables the reset controller driver for Altera SoCFPGAs. + This enables a simple reset controller driver for reset lines that + that can be asserted and deasserted by toggling bits in a contiguous, + exclusive register space. -config RESET_STM32 - bool "STM32 Reset Driver" if COMPILE_TEST - default ARCH_STM32 - help - This enables the RCC reset controller driver for STM32 MCUs. + Currently this driver supports Altera SoCFPGAs, the RCC reset + controller in STM32 MCUs, Allwinner SoCs, and ZTE's zx2967 family. config RESET_SUNXI bool "Allwinner SoCs Reset Driver" if COMPILE_TEST && !ARCH_SUNXI default ARCH_SUNXI + select RESET_SIMPLE help This enables the reset driver for Allwinner SoCs. @@ -121,12 +127,6 @@ config RESET_UNIPHIER Say Y if you want to control reset signals provided by System Control block, Media I/O block, Peripheral Block. -config RESET_ZX2967 - bool "ZTE ZX2967 Reset Driver" - depends on ARCH_ZX || COMPILE_TEST - help - This enables the reset controller driver for ZTE's zx2967 family. - config RESET_ZYNQ bool "ZYNQ Reset Driver" if COMPILE_TEST default ARCH_ZYNQ diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile index c1fd702ac57c..132c24f5ddb5 100644 --- a/drivers/reset/Makefile +++ b/drivers/reset/Makefile @@ -5,6 +5,7 @@ obj-$(CONFIG_ARCH_STI) += sti/ obj-$(CONFIG_ARCH_TEGRA) += tegra/ obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o obj-$(CONFIG_RESET_ATH79) += reset-ath79.o +obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o obj-$(CONFIG_RESET_HSDK) += reset-hsdk.o obj-$(CONFIG_RESET_IMX7) += reset-imx7.o @@ -13,12 +14,10 @@ obj-$(CONFIG_RESET_LPC18XX) += reset-lpc18xx.o obj-$(CONFIG_RESET_MESON) += reset-meson.o obj-$(CONFIG_RESET_OXNAS) += reset-oxnas.o obj-$(CONFIG_RESET_PISTACHIO) += reset-pistachio.o -obj-$(CONFIG_RESET_SOCFPGA) += reset-socfpga.o -obj-$(CONFIG_RESET_STM32) += reset-stm32.o +obj-$(CONFIG_RESET_SIMPLE) += reset-simple.o obj-$(CONFIG_RESET_SUNXI) += reset-sunxi.o obj-$(CONFIG_RESET_TI_SCI) += reset-ti-sci.o obj-$(CONFIG_RESET_TI_SYSCON) += reset-ti-syscon.o obj-$(CONFIG_RESET_UNIPHIER) += reset-uniphier.o -obj-$(CONFIG_RESET_ZX2967) += reset-zx2967.o obj-$(CONFIG_RESET_ZYNQ) += reset-zynq.o diff --git a/drivers/reset/reset-axs10x.c b/drivers/reset/reset-axs10x.c new file mode 100644 index 000000000000..afb298e46bd9 --- /dev/null +++ b/drivers/reset/reset-axs10x.c @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2017 Synopsys. + * + * Synopsys AXS10x reset driver. + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/reset-controller.h> + +#define to_axs10x_rst(p) container_of((p), struct axs10x_rst, rcdev) + +#define AXS10X_MAX_RESETS 32 + +struct axs10x_rst { + void __iomem *regs_rst; + spinlock_t lock; + struct reset_controller_dev rcdev; +}; + +static int axs10x_reset_reset(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct axs10x_rst *rst = to_axs10x_rst(rcdev); + unsigned long flags; + + spin_lock_irqsave(&rst->lock, flags); + writel(BIT(id), rst->regs_rst); + spin_unlock_irqrestore(&rst->lock, flags); + + return 0; +} + +static const struct reset_control_ops axs10x_reset_ops = { + .reset = axs10x_reset_reset, +}; + +static int axs10x_reset_probe(struct platform_device *pdev) +{ + struct axs10x_rst *rst; + struct resource *mem; + + rst = devm_kzalloc(&pdev->dev, sizeof(*rst), GFP_KERNEL); + if (!rst) + return -ENOMEM; + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + rst->regs_rst = devm_ioremap_resource(&pdev->dev, mem); + if (IS_ERR(rst->regs_rst)) + return PTR_ERR(rst->regs_rst); + + spin_lock_init(&rst->lock); + + rst->rcdev.owner = THIS_MODULE; + rst->rcdev.ops = &axs10x_reset_ops; + rst->rcdev.of_node = pdev->dev.of_node; + rst->rcdev.nr_resets = AXS10X_MAX_RESETS; + + return devm_reset_controller_register(&pdev->dev, &rst->rcdev); +} + +static const struct of_device_id axs10x_reset_dt_match[] = { + { .compatible = "snps,axs10x-reset" }, + { }, +}; + +static struct platform_driver axs10x_reset_driver = { + .probe = axs10x_reset_probe, + .driver = { + .name = "axs10x-reset", + .of_match_table = axs10x_reset_dt_match, + }, +}; +builtin_platform_driver(axs10x_reset_driver); + +MODULE_AUTHOR("Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>"); +MODULE_DESCRIPTION("Synopsys AXS10x reset driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/reset/reset-meson.c b/drivers/reset/reset-meson.c index a8b915eb8b58..c419a3753d00 100644 --- a/drivers/reset/reset-meson.c +++ b/drivers/reset/reset-meson.c @@ -62,13 +62,16 @@ #include <linux/reset-controller.h> #include <linux/slab.h> #include <linux/types.h> +#include <linux/of_device.h> #define REG_COUNT 8 #define BITS_PER_REG 32 +#define LEVEL_OFFSET 0x7c struct meson_reset { void __iomem *reg_base; struct reset_controller_dev rcdev; + spinlock_t lock; }; static int meson_reset_reset(struct reset_controller_dev *rcdev, @@ -80,26 +83,68 @@ static int meson_reset_reset(struct reset_controller_dev *rcdev, unsigned int offset = id % BITS_PER_REG; void __iomem *reg_addr = data->reg_base + (bank << 2); - if (bank >= REG_COUNT) - return -EINVAL; - writel(BIT(offset), reg_addr); return 0; } -static const struct reset_control_ops meson_reset_ops = { +static int meson_reset_level(struct reset_controller_dev *rcdev, + unsigned long id, bool assert) +{ + struct meson_reset *data = + container_of(rcdev, struct meson_reset, rcdev); + unsigned int bank = id / BITS_PER_REG; + unsigned int offset = id % BITS_PER_REG; + void __iomem *reg_addr = data->reg_base + LEVEL_OFFSET + (bank << 2); + unsigned long flags; + u32 reg; + + spin_lock_irqsave(&data->lock, flags); + + reg = readl(reg_addr); + if (assert) + writel(reg & ~BIT(offset), reg_addr); + else + writel(reg | BIT(offset), reg_addr); + + spin_unlock_irqrestore(&data->lock, flags); + + return 0; +} + +static int meson_reset_assert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return meson_reset_level(rcdev, id, true); +} + +static int meson_reset_deassert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return meson_reset_level(rcdev, id, false); +} + +static const struct reset_control_ops meson_reset_meson8_ops = { .reset = meson_reset_reset, }; +static const struct reset_control_ops meson_reset_gx_ops = { + .reset = meson_reset_reset, + .assert = meson_reset_assert, + .deassert = meson_reset_deassert, +}; + static const struct of_device_id meson_reset_dt_ids[] = { - { .compatible = "amlogic,meson8b-reset", }, - { .compatible = "amlogic,meson-gxbb-reset", }, + { .compatible = "amlogic,meson8b-reset", + .data = &meson_reset_meson8_ops, }, + { .compatible = "amlogic,meson-gxbb-reset", + .data = &meson_reset_gx_ops, }, { /* sentinel */ }, }; static int meson_reset_probe(struct platform_device *pdev) { + const struct reset_control_ops *ops; struct meson_reset *data; struct resource *res; @@ -107,6 +152,10 @@ static int meson_reset_probe(struct platform_device *pdev) if (!data) return -ENOMEM; + ops = of_device_get_match_data(&pdev->dev); + if (!ops) + return -EINVAL; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); data->reg_base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(data->reg_base)) @@ -114,9 +163,11 @@ static int meson_reset_probe(struct platform_device *pdev) platform_set_drvdata(pdev, data); + spin_lock_init(&data->lock); + data->rcdev.owner = THIS_MODULE; data->rcdev.nr_resets = REG_COUNT * BITS_PER_REG; - data->rcdev.ops = &meson_reset_ops; + data->rcdev.ops = ops; data->rcdev.of_node = pdev->dev.of_node; return devm_reset_controller_register(&pdev->dev, &data->rcdev); diff --git a/drivers/reset/reset-simple.c b/drivers/reset/reset-simple.c new file mode 100644 index 000000000000..2d4f362ef025 --- /dev/null +++ b/drivers/reset/reset-simple.c @@ -0,0 +1,186 @@ +/* + * Simple Reset Controller Driver + * + * Copyright (C) 2017 Pengutronix, Philipp Zabel <kernel@pengutronix.de> + * + * Based on Allwinner SoCs Reset Controller driver + * + * Copyright 2013 Maxime Ripard + * + * Maxime Ripard <maxime.ripard@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/reset-controller.h> +#include <linux/spinlock.h> + +#include "reset-simple.h" + +static inline struct reset_simple_data * +to_reset_simple_data(struct reset_controller_dev *rcdev) +{ + return container_of(rcdev, struct reset_simple_data, rcdev); +} + +static int reset_simple_update(struct reset_controller_dev *rcdev, + unsigned long id, bool assert) +{ + struct reset_simple_data *data = to_reset_simple_data(rcdev); + int reg_width = sizeof(u32); + int bank = id / (reg_width * BITS_PER_BYTE); + int offset = id % (reg_width * BITS_PER_BYTE); + unsigned long flags; + u32 reg; + + spin_lock_irqsave(&data->lock, flags); + + reg = readl(data->membase + (bank * reg_width)); + if (assert ^ data->active_low) + reg |= BIT(offset); + else + reg &= ~BIT(offset); + writel(reg, data->membase + (bank * reg_width)); + + spin_unlock_irqrestore(&data->lock, flags); + + return 0; +} + +static int reset_simple_assert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return reset_simple_update(rcdev, id, true); +} + +static int reset_simple_deassert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return reset_simple_update(rcdev, id, false); +} + +static int reset_simple_status(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct reset_simple_data *data = to_reset_simple_data(rcdev); + int reg_width = sizeof(u32); + int bank = id / (reg_width * BITS_PER_BYTE); + int offset = id % (reg_width * BITS_PER_BYTE); + u32 reg; + + reg = readl(data->membase + (bank * reg_width)); + + return !(reg & BIT(offset)) ^ !data->status_active_low; +} + +const struct reset_control_ops reset_simple_ops = { + .assert = reset_simple_assert, + .deassert = reset_simple_deassert, + .status = reset_simple_status, +}; + +/** + * struct reset_simple_devdata - simple reset controller properties + * @reg_offset: offset between base address and first reset register. + * @nr_resets: number of resets. If not set, default to resource size in bits. + * @active_low: if true, bits are cleared to assert the reset. Otherwise, bits + * are set to assert the reset. + * @status_active_low: if true, bits read back as cleared while the reset is + * asserted. Otherwise, bits read back as set while the + * reset is asserted. + */ +struct reset_simple_devdata { + u32 reg_offset; + u32 nr_resets; + bool active_low; + bool status_active_low; +}; + +#define SOCFPGA_NR_BANKS 8 + +static const struct reset_simple_devdata reset_simple_socfpga = { + .reg_offset = 0x10, + .nr_resets = SOCFPGA_NR_BANKS * 32, + .status_active_low = true, +}; + +static const struct reset_simple_devdata reset_simple_active_low = { + .active_low = true, + .status_active_low = true, +}; + +static const struct of_device_id reset_simple_dt_ids[] = { + { .compatible = "altr,rst-mgr", .data = &reset_simple_socfpga }, + { .compatible = "st,stm32-rcc", }, + { .compatible = "allwinner,sun6i-a31-clock-reset", + .data = &reset_simple_active_low }, + { .compatible = "zte,zx296718-reset", + .data = &reset_simple_active_low }, + { /* sentinel */ }, +}; + +static int reset_simple_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + const struct reset_simple_devdata *devdata; + struct reset_simple_data *data; + void __iomem *membase; + struct resource *res; + u32 reg_offset = 0; + + devdata = of_device_get_match_data(dev); + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + membase = devm_ioremap_resource(dev, res); + if (IS_ERR(membase)) + return PTR_ERR(membase); + + spin_lock_init(&data->lock); + data->membase = membase; + data->rcdev.owner = THIS_MODULE; + data->rcdev.nr_resets = resource_size(res) * BITS_PER_BYTE; + data->rcdev.ops = &reset_simple_ops; + data->rcdev.of_node = dev->of_node; + + if (devdata) { + reg_offset = devdata->reg_offset; + if (devdata->nr_resets) + data->rcdev.nr_resets = devdata->nr_resets; + data->active_low = devdata->active_low; + data->status_active_low = devdata->status_active_low; + } + + if (of_device_is_compatible(dev->of_node, "altr,rst-mgr") && + of_property_read_u32(dev->of_node, "altr,modrst-offset", + ®_offset)) { + dev_warn(dev, + "missing altr,modrst-offset property, assuming 0x%x!\n", + reg_offset); + } + + data->membase += reg_offset; + + return devm_reset_controller_register(dev, &data->rcdev); +} + +static struct platform_driver reset_simple_driver = { + .probe = reset_simple_probe, + .driver = { + .name = "simple-reset", + .of_match_table = reset_simple_dt_ids, + }, +}; +builtin_platform_driver(reset_simple_driver); diff --git a/drivers/reset/reset-simple.h b/drivers/reset/reset-simple.h new file mode 100644 index 000000000000..8a496022baef --- /dev/null +++ b/drivers/reset/reset-simple.h @@ -0,0 +1,45 @@ +/* + * Simple Reset Controller ops + * + * Based on Allwinner SoCs Reset Controller driver + * + * Copyright 2013 Maxime Ripard + * + * Maxime Ripard <maxime.ripard@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __RESET_SIMPLE_H__ +#define __RESET_SIMPLE_H__ + +#include <linux/io.h> +#include <linux/reset-controller.h> +#include <linux/spinlock.h> + +/** + * struct reset_simple_data - driver data for simple reset controllers + * @lock: spinlock to protect registers during read-modify-write cycles + * @membase: memory mapped I/O register range + * @rcdev: reset controller device base structure + * @active_low: if true, bits are cleared to assert the reset. Otherwise, bits + * are set to assert the reset. Note that this says nothing about + * the voltage level of the actual reset line. + * @status_active_low: if true, bits read back as cleared while the reset is + * asserted. Otherwise, bits read back as set while the + * reset is asserted. + */ +struct reset_simple_data { + spinlock_t lock; + void __iomem *membase; + struct reset_controller_dev rcdev; + bool active_low; + bool status_active_low; +}; + +extern const struct reset_control_ops reset_simple_ops; + +#endif /* __RESET_SIMPLE_H__ */ diff --git a/drivers/reset/reset-socfpga.c b/drivers/reset/reset-socfpga.c deleted file mode 100644 index 3907bbc9c6cf..000000000000 --- a/drivers/reset/reset-socfpga.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * Socfpga Reset Controller Driver - * - * Copyright 2014 Steffen Trumtrar <s.trumtrar@pengutronix.de> - * - * based on - * Allwinner SoCs Reset Controller driver - * - * Copyright 2013 Maxime Ripard - * - * Maxime Ripard <maxime.ripard@free-electrons.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/err.h> -#include <linux/io.h> -#include <linux/init.h> -#include <linux/of.h> -#include <linux/platform_device.h> -#include <linux/reset-controller.h> -#include <linux/spinlock.h> -#include <linux/types.h> - -#define BANK_INCREMENT 4 -#define NR_BANKS 8 - -struct socfpga_reset_data { - spinlock_t lock; - void __iomem *membase; - struct reset_controller_dev rcdev; -}; - -static int socfpga_reset_assert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct socfpga_reset_data *data = container_of(rcdev, - struct socfpga_reset_data, - rcdev); - int reg_width = sizeof(u32); - int bank = id / (reg_width * BITS_PER_BYTE); - int offset = id % (reg_width * BITS_PER_BYTE); - unsigned long flags; - u32 reg; - - spin_lock_irqsave(&data->lock, flags); - - reg = readl(data->membase + (bank * BANK_INCREMENT)); - writel(reg | BIT(offset), data->membase + (bank * BANK_INCREMENT)); - spin_unlock_irqrestore(&data->lock, flags); - - return 0; -} - -static int socfpga_reset_deassert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct socfpga_reset_data *data = container_of(rcdev, - struct socfpga_reset_data, - rcdev); - - int reg_width = sizeof(u32); - int bank = id / (reg_width * BITS_PER_BYTE); - int offset = id % (reg_width * BITS_PER_BYTE); - unsigned long flags; - u32 reg; - - spin_lock_irqsave(&data->lock, flags); - - reg = readl(data->membase + (bank * BANK_INCREMENT)); - writel(reg & ~BIT(offset), data->membase + (bank * BANK_INCREMENT)); - - spin_unlock_irqrestore(&data->lock, flags); - - return 0; -} - -static int socfpga_reset_status(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct socfpga_reset_data *data = container_of(rcdev, - struct socfpga_reset_data, rcdev); - int reg_width = sizeof(u32); - int bank = id / (reg_width * BITS_PER_BYTE); - int offset = id % (reg_width * BITS_PER_BYTE); - u32 reg; - - reg = readl(data->membase + (bank * BANK_INCREMENT)); - - return !(reg & BIT(offset)); -} - -static const struct reset_control_ops socfpga_reset_ops = { - .assert = socfpga_reset_assert, - .deassert = socfpga_reset_deassert, - .status = socfpga_reset_status, -}; - -static int socfpga_reset_probe(struct platform_device *pdev) -{ - struct socfpga_reset_data *data; - struct resource *res; - struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node; - u32 modrst_offset; - - /* - * The binding was mainlined without the required property. - * Do not continue, when we encounter an old DT. - */ - if (!of_find_property(pdev->dev.of_node, "#reset-cells", NULL)) { - dev_err(&pdev->dev, "%pOF missing #reset-cells property\n", - pdev->dev.of_node); - return -EINVAL; - } - - data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - data->membase = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(data->membase)) - return PTR_ERR(data->membase); - - if (of_property_read_u32(np, "altr,modrst-offset", &modrst_offset)) { - dev_warn(dev, "missing altr,modrst-offset property, assuming 0x10!\n"); - modrst_offset = 0x10; - } - data->membase += modrst_offset; - - spin_lock_init(&data->lock); - - data->rcdev.owner = THIS_MODULE; - data->rcdev.nr_resets = NR_BANKS * (sizeof(u32) * BITS_PER_BYTE); - data->rcdev.ops = &socfpga_reset_ops; - data->rcdev.of_node = pdev->dev.of_node; - - return devm_reset_controller_register(dev, &data->rcdev); -} - -static const struct of_device_id socfpga_reset_dt_ids[] = { - { .compatible = "altr,rst-mgr", }, - { /* sentinel */ }, -}; - -static struct platform_driver socfpga_reset_driver = { - .probe = socfpga_reset_probe, - .driver = { - .name = "socfpga-reset", - .of_match_table = socfpga_reset_dt_ids, - }, -}; -builtin_platform_driver(socfpga_reset_driver); diff --git a/drivers/reset/reset-stm32.c b/drivers/reset/reset-stm32.c deleted file mode 100644 index 3a7c8527e66a..000000000000 --- a/drivers/reset/reset-stm32.c +++ /dev/null @@ -1,108 +0,0 @@ -/* - * Copyright (C) Maxime Coquelin 2015 - * Author: Maxime Coquelin <mcoquelin.stm32@gmail.com> - * License terms: GNU General Public License (GPL), version 2 - * - * Heavily based on sunxi driver from Maxime Ripard. - */ - -#include <linux/err.h> -#include <linux/io.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/platform_device.h> -#include <linux/reset-controller.h> -#include <linux/slab.h> -#include <linux/spinlock.h> -#include <linux/types.h> - -struct stm32_reset_data { - spinlock_t lock; - void __iomem *membase; - struct reset_controller_dev rcdev; -}; - -static int stm32_reset_assert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct stm32_reset_data *data = container_of(rcdev, - struct stm32_reset_data, - rcdev); - int bank = id / BITS_PER_LONG; - int offset = id % BITS_PER_LONG; - unsigned long flags; - u32 reg; - - spin_lock_irqsave(&data->lock, flags); - - reg = readl(data->membase + (bank * 4)); - writel(reg | BIT(offset), data->membase + (bank * 4)); - - spin_unlock_irqrestore(&data->lock, flags); - - return 0; -} - -static int stm32_reset_deassert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct stm32_reset_data *data = container_of(rcdev, - struct stm32_reset_data, - rcdev); - int bank = id / BITS_PER_LONG; - int offset = id % BITS_PER_LONG; - unsigned long flags; - u32 reg; - - spin_lock_irqsave(&data->lock, flags); - - reg = readl(data->membase + (bank * 4)); - writel(reg & ~BIT(offset), data->membase + (bank * 4)); - - spin_unlock_irqrestore(&data->lock, flags); - - return 0; -} - -static const struct reset_control_ops stm32_reset_ops = { - .assert = stm32_reset_assert, - .deassert = stm32_reset_deassert, -}; - -static const struct of_device_id stm32_reset_dt_ids[] = { - { .compatible = "st,stm32-rcc", }, - { /* sentinel */ }, -}; - -static int stm32_reset_probe(struct platform_device *pdev) -{ - struct stm32_reset_data *data; - struct resource *res; - - data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - data->membase = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(data->membase)) - return PTR_ERR(data->membase); - - spin_lock_init(&data->lock); - - data->rcdev.owner = THIS_MODULE; - data->rcdev.nr_resets = resource_size(res) * 8; - data->rcdev.ops = &stm32_reset_ops; - data->rcdev.of_node = pdev->dev.of_node; - - return devm_reset_controller_register(&pdev->dev, &data->rcdev); -} - -static struct platform_driver stm32_reset_driver = { - .probe = stm32_reset_probe, - .driver = { - .name = "stm32-rcc-reset", - .of_match_table = stm32_reset_dt_ids, - }, -}; -builtin_platform_driver(stm32_reset_driver); diff --git a/drivers/reset/reset-sunxi.c b/drivers/reset/reset-sunxi.c index 2c7dd1fd08df..db9a1a75523f 100644 --- a/drivers/reset/reset-sunxi.c +++ b/drivers/reset/reset-sunxi.c @@ -22,64 +22,11 @@ #include <linux/spinlock.h> #include <linux/types.h> -struct sunxi_reset_data { - spinlock_t lock; - void __iomem *membase; - struct reset_controller_dev rcdev; -}; - -static int sunxi_reset_assert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct sunxi_reset_data *data = container_of(rcdev, - struct sunxi_reset_data, - rcdev); - int reg_width = sizeof(u32); - int bank = id / (reg_width * BITS_PER_BYTE); - int offset = id % (reg_width * BITS_PER_BYTE); - unsigned long flags; - u32 reg; - - spin_lock_irqsave(&data->lock, flags); - - reg = readl(data->membase + (bank * reg_width)); - writel(reg & ~BIT(offset), data->membase + (bank * reg_width)); - - spin_unlock_irqrestore(&data->lock, flags); - - return 0; -} - -static int sunxi_reset_deassert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct sunxi_reset_data *data = container_of(rcdev, - struct sunxi_reset_data, - rcdev); - int reg_width = sizeof(u32); - int bank = id / (reg_width * BITS_PER_BYTE); - int offset = id % (reg_width * BITS_PER_BYTE); - unsigned long flags; - u32 reg; - - spin_lock_irqsave(&data->lock, flags); - - reg = readl(data->membase + (bank * reg_width)); - writel(reg | BIT(offset), data->membase + (bank * reg_width)); - - spin_unlock_irqrestore(&data->lock, flags); - - return 0; -} - -static const struct reset_control_ops sunxi_reset_ops = { - .assert = sunxi_reset_assert, - .deassert = sunxi_reset_deassert, -}; +#include "reset-simple.h" static int sunxi_reset_init(struct device_node *np) { - struct sunxi_reset_data *data; + struct reset_simple_data *data; struct resource res; resource_size_t size; int ret; @@ -108,8 +55,9 @@ static int sunxi_reset_init(struct device_node *np) data->rcdev.owner = THIS_MODULE; data->rcdev.nr_resets = size * 8; - data->rcdev.ops = &sunxi_reset_ops; + data->rcdev.ops = &reset_simple_ops; data->rcdev.of_node = np; + data->active_low = true; return reset_controller_register(&data->rcdev); @@ -122,6 +70,8 @@ err_alloc: * These are the reset controller we need to initialize early on in * our system, before we can even think of using a regular device * driver for it. + * The controllers that we can register through the regular device + * model are handled by the simple reset driver directly. */ static const struct of_device_id sunxi_early_reset_dt_ids[] __initconst = { { .compatible = "allwinner,sun6i-a31-ahb1-reset", }, @@ -135,45 +85,3 @@ void __init sun6i_reset_init(void) for_each_matching_node(np, sunxi_early_reset_dt_ids) sunxi_reset_init(np); } - -/* - * And these are the controllers we can register through the regular - * device model. - */ -static const struct of_device_id sunxi_reset_dt_ids[] = { - { .compatible = "allwinner,sun6i-a31-clock-reset", }, - { /* sentinel */ }, -}; - -static int sunxi_reset_probe(struct platform_device *pdev) -{ - struct sunxi_reset_data *data; - struct resource *res; - - data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - data->membase = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(data->membase)) - return PTR_ERR(data->membase); - - spin_lock_init(&data->lock); - - data->rcdev.owner = THIS_MODULE; - data->rcdev.nr_resets = resource_size(res) * 8; - data->rcdev.ops = &sunxi_reset_ops; - data->rcdev.of_node = pdev->dev.of_node; - - return devm_reset_controller_register(&pdev->dev, &data->rcdev); -} - -static struct platform_driver sunxi_reset_driver = { - .probe = sunxi_reset_probe, - .driver = { - .name = "sunxi-reset", - .of_match_table = sunxi_reset_dt_ids, - }, -}; -builtin_platform_driver(sunxi_reset_driver); diff --git a/drivers/reset/reset-uniphier.c b/drivers/reset/reset-uniphier.c index bda2dd196ae5..e8bb023ff15e 100644 --- a/drivers/reset/reset-uniphier.c +++ b/drivers/reset/reset-uniphier.c @@ -58,6 +58,7 @@ static const struct uniphier_reset_data uniphier_ld4_sys_reset_data[] = { static const struct uniphier_reset_data uniphier_pro4_sys_reset_data[] = { UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */ + UNIPHIER_RESETX(6, 0x2000, 12), /* Ether */ UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC (HSC, MIO, RLE) */ UNIPHIER_RESETX(12, 0x2000, 6), /* GIO (Ether, SATA, USB3) */ UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */ @@ -76,6 +77,7 @@ static const struct uniphier_reset_data uniphier_pro5_sys_reset_data[] = { static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = { UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */ + UNIPHIER_RESETX(6, 0x2000, 12), /* Ether */ UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC (HSC, RLE) */ UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */ UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */ @@ -92,6 +94,7 @@ static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = { static const struct uniphier_reset_data uniphier_ld11_sys_reset_data[] = { UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */ UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */ + UNIPHIER_RESETX(6, 0x200c, 6), /* Ether */ UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC (HSC, MIO) */ UNIPHIER_RESETX(40, 0x2008, 0), /* AIO */ UNIPHIER_RESETX(41, 0x2008, 1), /* EVEA */ @@ -102,6 +105,7 @@ static const struct uniphier_reset_data uniphier_ld11_sys_reset_data[] = { static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = { UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */ UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */ + UNIPHIER_RESETX(6, 0x200c, 6), /* Ether */ UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC (HSC) */ UNIPHIER_RESETX(12, 0x200c, 5), /* GIO (PCIe, USB3) */ UNIPHIER_RESETX(16, 0x200c, 12), /* USB30-PHY0 */ @@ -114,6 +118,20 @@ static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = { UNIPHIER_RESET_END, }; +static const struct uniphier_reset_data uniphier_pxs3_sys_reset_data[] = { + UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */ + UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */ + UNIPHIER_RESETX(8, 0x200c, 12), /* STDMAC */ + UNIPHIER_RESETX(12, 0x200c, 4), /* USB30 link (GIO0) */ + UNIPHIER_RESETX(13, 0x200c, 5), /* USB31 link (GIO1) */ + UNIPHIER_RESETX(16, 0x200c, 16), /* USB30-PHY0 */ + UNIPHIER_RESETX(17, 0x200c, 18), /* USB30-PHY1 */ + UNIPHIER_RESETX(18, 0x200c, 20), /* USB30-PHY2 */ + UNIPHIER_RESETX(20, 0x200c, 17), /* USB31-PHY0 */ + UNIPHIER_RESETX(21, 0x200c, 19), /* USB31-PHY1 */ + UNIPHIER_RESET_END, +}; + /* Media I/O reset data */ #define UNIPHIER_MIO_RESET_SD(id, ch) \ UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 0) @@ -359,6 +377,10 @@ static const struct of_device_id uniphier_reset_match[] = { .compatible = "socionext,uniphier-ld20-reset", .data = uniphier_ld20_sys_reset_data, }, + { + .compatible = "socionext,uniphier-pxs3-reset", + .data = uniphier_pxs3_sys_reset_data, + }, /* Media I/O reset, SD reset */ { .compatible = "socionext,uniphier-ld4-mio-reset", @@ -392,6 +414,10 @@ static const struct of_device_id uniphier_reset_match[] = { .compatible = "socionext,uniphier-ld20-sd-reset", .data = uniphier_pro5_sd_reset_data, }, + { + .compatible = "socionext,uniphier-pxs3-sd-reset", + .data = uniphier_pro5_sd_reset_data, + }, /* Peripheral reset */ { .compatible = "socionext,uniphier-ld4-peri-reset", @@ -421,6 +447,10 @@ static const struct of_device_id uniphier_reset_match[] = { .compatible = "socionext,uniphier-ld20-peri-reset", .data = uniphier_pro4_peri_reset_data, }, + { + .compatible = "socionext,uniphier-pxs3-peri-reset", + .data = uniphier_pro4_peri_reset_data, + }, /* Analog signal amplifiers reset */ { .compatible = "socionext,uniphier-ld11-adamv-reset", diff --git a/drivers/reset/reset-zx2967.c b/drivers/reset/reset-zx2967.c deleted file mode 100644 index 4f319f7753d4..000000000000 --- a/drivers/reset/reset-zx2967.c +++ /dev/null @@ -1,99 +0,0 @@ -/* - * ZTE's zx2967 family reset controller driver - * - * Copyright (C) 2017 ZTE Ltd. - * - * Author: Baoyou Xie <baoyou.xie@linaro.org> - * - * License terms: GNU General Public License (GPL) version 2 - */ - -#include <linux/of_address.h> -#include <linux/platform_device.h> -#include <linux/reset-controller.h> - -struct zx2967_reset { - void __iomem *reg_base; - spinlock_t lock; - struct reset_controller_dev rcdev; -}; - -static int zx2967_reset_act(struct reset_controller_dev *rcdev, - unsigned long id, bool assert) -{ - struct zx2967_reset *reset = NULL; - int bank = id / 32; - int offset = id % 32; - u32 reg; - unsigned long flags; - - reset = container_of(rcdev, struct zx2967_reset, rcdev); - - spin_lock_irqsave(&reset->lock, flags); - - reg = readl_relaxed(reset->reg_base + (bank * 4)); - if (assert) - reg &= ~BIT(offset); - else - reg |= BIT(offset); - writel_relaxed(reg, reset->reg_base + (bank * 4)); - - spin_unlock_irqrestore(&reset->lock, flags); - - return 0; -} - -static int zx2967_reset_assert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - return zx2967_reset_act(rcdev, id, true); -} - -static int zx2967_reset_deassert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - return zx2967_reset_act(rcdev, id, false); -} - -static const struct reset_control_ops zx2967_reset_ops = { - .assert = zx2967_reset_assert, - .deassert = zx2967_reset_deassert, -}; - -static int zx2967_reset_probe(struct platform_device *pdev) -{ - struct zx2967_reset *reset; - struct resource *res; - - reset = devm_kzalloc(&pdev->dev, sizeof(*reset), GFP_KERNEL); - if (!reset) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - reset->reg_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(reset->reg_base)) - return PTR_ERR(reset->reg_base); - - spin_lock_init(&reset->lock); - - reset->rcdev.owner = THIS_MODULE; - reset->rcdev.nr_resets = resource_size(res) * 8; - reset->rcdev.ops = &zx2967_reset_ops; - reset->rcdev.of_node = pdev->dev.of_node; - - return devm_reset_controller_register(&pdev->dev, &reset->rcdev); -} - -static const struct of_device_id zx2967_reset_dt_ids[] = { - { .compatible = "zte,zx296718-reset", }, - {}, -}; - -static struct platform_driver zx2967_reset_driver = { - .probe = zx2967_reset_probe, - .driver = { - .name = "zx2967-reset", - .of_match_table = zx2967_reset_dt_ids, - }, -}; -builtin_platform_driver(zx2967_reset_driver); diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile index 36dec140ea0d..deecb16e7256 100644 --- a/drivers/soc/Makefile +++ b/drivers/soc/Makefile @@ -11,7 +11,7 @@ obj-$(CONFIG_MACH_DOVE) += dove/ obj-y += fsl/ obj-$(CONFIG_ARCH_MXC) += imx/ obj-$(CONFIG_SOC_XWAY) += lantiq/ -obj-$(CONFIG_ARCH_MEDIATEK) += mediatek/ +obj-y += mediatek/ obj-$(CONFIG_ARCH_MESON) += amlogic/ obj-$(CONFIG_ARCH_QCOM) += qcom/ obj-y += renesas/ diff --git a/drivers/soc/amlogic/Kconfig b/drivers/soc/amlogic/Kconfig index 22acf064531f..b04f6e4aedbc 100644 --- a/drivers/soc/amlogic/Kconfig +++ b/drivers/soc/amlogic/Kconfig @@ -9,4 +9,25 @@ config MESON_GX_SOCINFO Say yes to support decoding of Amlogic Meson GX SoC family information about the type, package and version. +config MESON_GX_PM_DOMAINS + bool "Amlogic Meson GX Power Domains driver" + depends on ARCH_MESON || COMPILE_TEST + depends on PM && OF + default ARCH_MESON + select PM_GENERIC_DOMAINS + select PM_GENERIC_DOMAINS_OF + help + Say yes to expose Amlogic Meson GX Power Domains as + Generic Power Domains. + +config MESON_MX_SOCINFO + bool "Amlogic Meson MX SoC Information driver" + depends on ARCH_MESON || COMPILE_TEST + default ARCH_MESON + select SOC_BUS + help + Say yes to support decoding of Amlogic Meson6, Meson8, + Meson8b and Meson8m2 SoC family information about the type + and version. + endmenu diff --git a/drivers/soc/amlogic/Makefile b/drivers/soc/amlogic/Makefile index 3e85fc462c21..8fa321893928 100644 --- a/drivers/soc/amlogic/Makefile +++ b/drivers/soc/amlogic/Makefile @@ -1 +1,3 @@ obj-$(CONFIG_MESON_GX_SOCINFO) += meson-gx-socinfo.o +obj-$(CONFIG_MESON_GX_PM_DOMAINS) += meson-gx-pwrc-vpu.o +obj-$(CONFIG_MESON_MX_SOCINFO) += meson-mx-socinfo.o diff --git a/drivers/soc/amlogic/meson-gx-pwrc-vpu.c b/drivers/soc/amlogic/meson-gx-pwrc-vpu.c new file mode 100644 index 000000000000..2bdeebc48901 --- /dev/null +++ b/drivers/soc/amlogic/meson-gx-pwrc-vpu.c @@ -0,0 +1,243 @@ +/* + * Copyright (c) 2017 BayLibre, SAS + * Author: Neil Armstrong <narmstrong@baylibre.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <linux/of_address.h> +#include <linux/platform_device.h> +#include <linux/pm_domain.h> +#include <linux/bitfield.h> +#include <linux/regmap.h> +#include <linux/mfd/syscon.h> +#include <linux/reset.h> +#include <linux/clk.h> + +/* AO Offsets */ + +#define AO_RTI_GEN_PWR_SLEEP0 (0x3a << 2) + +#define GEN_PWR_VPU_HDMI BIT(8) +#define GEN_PWR_VPU_HDMI_ISO BIT(9) + +/* HHI Offsets */ + +#define HHI_MEM_PD_REG0 (0x40 << 2) +#define HHI_VPU_MEM_PD_REG0 (0x41 << 2) +#define HHI_VPU_MEM_PD_REG1 (0x42 << 2) + +struct meson_gx_pwrc_vpu { + struct generic_pm_domain genpd; + struct regmap *regmap_ao; + struct regmap *regmap_hhi; + struct reset_control *rstc; + struct clk *vpu_clk; + struct clk *vapb_clk; +}; + +static inline +struct meson_gx_pwrc_vpu *genpd_to_pd(struct generic_pm_domain *d) +{ + return container_of(d, struct meson_gx_pwrc_vpu, genpd); +} + +static int meson_gx_pwrc_vpu_power_off(struct generic_pm_domain *genpd) +{ + struct meson_gx_pwrc_vpu *pd = genpd_to_pd(genpd); + int i; + + regmap_update_bits(pd->regmap_ao, AO_RTI_GEN_PWR_SLEEP0, + GEN_PWR_VPU_HDMI_ISO, GEN_PWR_VPU_HDMI_ISO); + udelay(20); + + /* Power Down Memories */ + for (i = 0; i < 32; i += 2) { + regmap_update_bits(pd->regmap_hhi, HHI_VPU_MEM_PD_REG0, + 0x2 << i, 0x3 << i); + udelay(5); + } + for (i = 0; i < 32; i += 2) { + regmap_update_bits(pd->regmap_hhi, HHI_VPU_MEM_PD_REG1, + 0x2 << i, 0x3 << i); + udelay(5); + } + for (i = 8; i < 16; i++) { + regmap_update_bits(pd->regmap_hhi, HHI_MEM_PD_REG0, + BIT(i), BIT(i)); + udelay(5); + } + udelay(20); + + regmap_update_bits(pd->regmap_ao, AO_RTI_GEN_PWR_SLEEP0, + GEN_PWR_VPU_HDMI, GEN_PWR_VPU_HDMI); + + msleep(20); + + clk_disable_unprepare(pd->vpu_clk); + clk_disable_unprepare(pd->vapb_clk); + + return 0; +} + +static int meson_gx_pwrc_vpu_setup_clk(struct meson_gx_pwrc_vpu *pd) +{ + int ret; + + ret = clk_prepare_enable(pd->vpu_clk); + if (ret) + return ret; + + ret = clk_prepare_enable(pd->vapb_clk); + if (ret) + clk_disable_unprepare(pd->vpu_clk); + + return ret; +} + +static int meson_gx_pwrc_vpu_power_on(struct generic_pm_domain *genpd) +{ + struct meson_gx_pwrc_vpu *pd = genpd_to_pd(genpd); + int ret; + int i; + + regmap_update_bits(pd->regmap_ao, AO_RTI_GEN_PWR_SLEEP0, + GEN_PWR_VPU_HDMI, 0); + udelay(20); + + /* Power Up Memories */ + for (i = 0; i < 32; i += 2) { + regmap_update_bits(pd->regmap_hhi, HHI_VPU_MEM_PD_REG0, + 0x2 << i, 0); + udelay(5); + } + + for (i = 0; i < 32; i += 2) { + regmap_update_bits(pd->regmap_hhi, HHI_VPU_MEM_PD_REG1, + 0x2 << i, 0); + udelay(5); + } + + for (i = 8; i < 16; i++) { + regmap_update_bits(pd->regmap_hhi, HHI_MEM_PD_REG0, + BIT(i), 0); + udelay(5); + } + udelay(20); + + ret = reset_control_assert(pd->rstc); + if (ret) + return ret; + + regmap_update_bits(pd->regmap_ao, AO_RTI_GEN_PWR_SLEEP0, + GEN_PWR_VPU_HDMI_ISO, 0); + + ret = reset_control_deassert(pd->rstc); + if (ret) + return ret; + + ret = meson_gx_pwrc_vpu_setup_clk(pd); + if (ret) + return ret; + + return 0; +} + +static bool meson_gx_pwrc_vpu_get_power(struct meson_gx_pwrc_vpu *pd) +{ + u32 reg; + + regmap_read(pd->regmap_ao, AO_RTI_GEN_PWR_SLEEP0, ®); + + return (reg & GEN_PWR_VPU_HDMI); +} + +static struct meson_gx_pwrc_vpu vpu_hdmi_pd = { + .genpd = { + .name = "vpu_hdmi", + .power_off = meson_gx_pwrc_vpu_power_off, + .power_on = meson_gx_pwrc_vpu_power_on, + }, +}; + +static int meson_gx_pwrc_vpu_probe(struct platform_device *pdev) +{ + struct regmap *regmap_ao, *regmap_hhi; + struct reset_control *rstc; + struct clk *vpu_clk; + struct clk *vapb_clk; + bool powered_off; + int ret; + + regmap_ao = syscon_node_to_regmap(of_get_parent(pdev->dev.of_node)); + if (IS_ERR(regmap_ao)) { + dev_err(&pdev->dev, "failed to get regmap\n"); + return PTR_ERR(regmap_ao); + } + + regmap_hhi = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, + "amlogic,hhi-sysctrl"); + if (IS_ERR(regmap_hhi)) { + dev_err(&pdev->dev, "failed to get HHI regmap\n"); + return PTR_ERR(regmap_hhi); + } + + rstc = devm_reset_control_array_get(&pdev->dev, false, false); + if (IS_ERR(rstc)) { + dev_err(&pdev->dev, "failed to get reset lines\n"); + return PTR_ERR(rstc); + } + + vpu_clk = devm_clk_get(&pdev->dev, "vpu"); + if (IS_ERR(vpu_clk)) { + dev_err(&pdev->dev, "vpu clock request failed\n"); + return PTR_ERR(vpu_clk); + } + + vapb_clk = devm_clk_get(&pdev->dev, "vapb"); + if (IS_ERR(vapb_clk)) { + dev_err(&pdev->dev, "vapb clock request failed\n"); + return PTR_ERR(vapb_clk); + } + + vpu_hdmi_pd.regmap_ao = regmap_ao; + vpu_hdmi_pd.regmap_hhi = regmap_hhi; + vpu_hdmi_pd.rstc = rstc; + vpu_hdmi_pd.vpu_clk = vpu_clk; + vpu_hdmi_pd.vapb_clk = vapb_clk; + + powered_off = meson_gx_pwrc_vpu_get_power(&vpu_hdmi_pd); + + /* If already powered, sync the clock states */ + if (!powered_off) { + ret = meson_gx_pwrc_vpu_setup_clk(&vpu_hdmi_pd); + if (ret) + return ret; + } + + pm_genpd_init(&vpu_hdmi_pd.genpd, &pm_domain_always_on_gov, + powered_off); + + return of_genpd_add_provider_simple(pdev->dev.of_node, + &vpu_hdmi_pd.genpd); +} + +static void meson_gx_pwrc_vpu_shutdown(struct platform_device *pdev) +{ + meson_gx_pwrc_vpu_power_off(&vpu_hdmi_pd.genpd); +} + +static const struct of_device_id meson_gx_pwrc_vpu_match_table[] = { + { .compatible = "amlogic,meson-gx-pwrc-vpu" }, + { /* sentinel */ } +}; + +static struct platform_driver meson_gx_pwrc_vpu_driver = { + .probe = meson_gx_pwrc_vpu_probe, + .shutdown = meson_gx_pwrc_vpu_shutdown, + .driver = { + .name = "meson_gx_pwrc_vpu", + .of_match_table = meson_gx_pwrc_vpu_match_table, + }, +}; +builtin_platform_driver(meson_gx_pwrc_vpu_driver); diff --git a/drivers/soc/amlogic/meson-mx-socinfo.c b/drivers/soc/amlogic/meson-mx-socinfo.c new file mode 100644 index 000000000000..7bfff5ff22a2 --- /dev/null +++ b/drivers/soc/amlogic/meson-mx-socinfo.c @@ -0,0 +1,175 @@ +/* + * Copyright (c) 2017 Martin Blumenstingl <martin.blumenstingl@googlemail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/sys_soc.h> +#include <linux/bitfield.h> +#include <linux/regmap.h> +#include <linux/mfd/syscon.h> + +#define MESON_SOCINFO_MAJOR_VER_MESON6 0x16 +#define MESON_SOCINFO_MAJOR_VER_MESON8 0x19 +#define MESON_SOCINFO_MAJOR_VER_MESON8B 0x1b + +#define MESON_MX_ASSIST_HW_REV 0x14c + +#define MESON_MX_ANALOG_TOP_METAL_REVISION 0x0 + +#define MESON_MX_BOOTROM_MISC_VER 0x4 + +static const char *meson_mx_socinfo_revision(unsigned int major_ver, + unsigned int misc_ver, + unsigned int metal_rev) +{ + unsigned int minor_ver; + + switch (major_ver) { + case MESON_SOCINFO_MAJOR_VER_MESON6: + minor_ver = 0xa; + break; + + case MESON_SOCINFO_MAJOR_VER_MESON8: + if (metal_rev == 0x11111112) + major_ver = 0x1d; + + if (metal_rev == 0x11111111 || metal_rev == 0x11111112) + minor_ver = 0xa; + else if (metal_rev == 0x11111113) + minor_ver = 0xb; + else if (metal_rev == 0x11111133) + minor_ver = 0xc; + else + minor_ver = 0xd; + + break; + + case MESON_SOCINFO_MAJOR_VER_MESON8B: + if (metal_rev == 0x11111111) + minor_ver = 0xa; + else + minor_ver = 0xb; + + break; + + default: + minor_ver = 0x0; + break; + } + + return kasprintf(GFP_KERNEL, "Rev%X (%x - 0:%X)", minor_ver, major_ver, + misc_ver); +} + +static const char *meson_mx_socinfo_soc_id(unsigned int major_ver, + unsigned int metal_rev) +{ + const char *soc_id; + + switch (major_ver) { + case MESON_SOCINFO_MAJOR_VER_MESON6: + soc_id = "Meson6 (AML8726-MX)"; + break; + + case MESON_SOCINFO_MAJOR_VER_MESON8: + if (metal_rev == 0x11111112) + soc_id = "Meson8m2 (S812)"; + else + soc_id = "Meson8 (S802)"; + + break; + + case MESON_SOCINFO_MAJOR_VER_MESON8B: + soc_id = "Meson8b (S805)"; + break; + + default: + soc_id = "Unknown"; + break; + } + + return kstrdup_const(soc_id, GFP_KERNEL); +} + +static const struct of_device_id meson_mx_socinfo_analog_top_ids[] = { + { .compatible = "amlogic,meson8-analog-top", }, + { .compatible = "amlogic,meson8b-analog-top", }, + { /* sentinel */ } +}; + +int __init meson_mx_socinfo_init(void) +{ + struct soc_device_attribute *soc_dev_attr; + struct soc_device *soc_dev; + struct device_node *np; + struct regmap *assist_regmap, *bootrom_regmap, *analog_top_regmap; + unsigned int major_ver, misc_ver, metal_rev = 0; + int ret; + + assist_regmap = + syscon_regmap_lookup_by_compatible("amlogic,meson-mx-assist"); + if (IS_ERR(assist_regmap)) + return PTR_ERR(assist_regmap); + + bootrom_regmap = + syscon_regmap_lookup_by_compatible("amlogic,meson-mx-bootrom"); + if (IS_ERR(bootrom_regmap)) + return PTR_ERR(bootrom_regmap); + + np = of_find_matching_node(NULL, meson_mx_socinfo_analog_top_ids); + if (np) { + analog_top_regmap = syscon_node_to_regmap(np); + if (IS_ERR(analog_top_regmap)) + return PTR_ERR(analog_top_regmap); + + ret = regmap_read(analog_top_regmap, + MESON_MX_ANALOG_TOP_METAL_REVISION, + &metal_rev); + if (ret) + return ret; + } + + ret = regmap_read(assist_regmap, MESON_MX_ASSIST_HW_REV, &major_ver); + if (ret < 0) + return ret; + + ret = regmap_read(bootrom_regmap, MESON_MX_BOOTROM_MISC_VER, + &misc_ver); + if (ret < 0) + return ret; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + return -ENODEV; + + soc_dev_attr->family = "Amlogic Meson"; + + np = of_find_node_by_path("/"); + of_property_read_string(np, "model", &soc_dev_attr->machine); + of_node_put(np); + + soc_dev_attr->revision = meson_mx_socinfo_revision(major_ver, misc_ver, + metal_rev); + soc_dev_attr->soc_id = meson_mx_socinfo_soc_id(major_ver, metal_rev); + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR(soc_dev)) { + kfree_const(soc_dev_attr->revision); + kfree_const(soc_dev_attr->soc_id); + kfree(soc_dev_attr); + return PTR_ERR(soc_dev); + } + + dev_info(soc_device_to_device(soc_dev), "Amlogic %s %s detected\n", + soc_dev_attr->soc_id, soc_dev_attr->revision); + + return 0; +} +device_initcall(meson_mx_socinfo_init); diff --git a/drivers/soc/atmel/soc.c b/drivers/soc/atmel/soc.c index c1363c83c352..4dd03b099c89 100644 --- a/drivers/soc/atmel/soc.c +++ b/drivers/soc/atmel/soc.c @@ -72,6 +72,8 @@ static const struct at91_soc __initconst socs[] = { "sama5d21", "sama5d2"), AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D22CU_EXID_MATCH, "sama5d22", "sama5d2"), + AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D225C_D1M_EXID_MATCH, + "sama5d225c 16MiB SiP", "sama5d2"), AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D23CU_EXID_MATCH, "sama5d23", "sama5d2"), AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D24CX_EXID_MATCH, @@ -84,10 +86,16 @@ static const struct at91_soc __initconst socs[] = { "sama5d27", "sama5d2"), AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D27CN_EXID_MATCH, "sama5d27", "sama5d2"), + AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D27C_D1G_EXID_MATCH, + "sama5d27c 128MiB SiP", "sama5d2"), + AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D27C_D5M_EXID_MATCH, + "sama5d27c 64MiB SiP", "sama5d2"), AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D28CU_EXID_MATCH, "sama5d28", "sama5d2"), AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D28CN_EXID_MATCH, "sama5d28", "sama5d2"), + AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D28C_D1G_EXID_MATCH, + "sama5d28c 128MiB SiP", "sama5d2"), AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D31_EXID_MATCH, "sama5d31", "sama5d3"), AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D33_EXID_MATCH, diff --git a/drivers/soc/atmel/soc.h b/drivers/soc/atmel/soc.h index a90bd5b0ef8f..94cd5d1ab502 100644 --- a/drivers/soc/atmel/soc.h +++ b/drivers/soc/atmel/soc.h @@ -64,14 +64,18 @@ at91_soc_init(const struct at91_soc *socs); #define SAMA5D2_CIDR_MATCH 0x0a5c08c0 #define SAMA5D21CU_EXID_MATCH 0x0000005a +#define SAMA5D225C_D1M_EXID_MATCH 0x00000053 #define SAMA5D22CU_EXID_MATCH 0x00000059 #define SAMA5D22CN_EXID_MATCH 0x00000069 #define SAMA5D23CU_EXID_MATCH 0x00000058 #define SAMA5D24CX_EXID_MATCH 0x00000004 #define SAMA5D24CU_EXID_MATCH 0x00000014 #define SAMA5D26CU_EXID_MATCH 0x00000012 +#define SAMA5D27C_D1G_EXID_MATCH 0x00000033 +#define SAMA5D27C_D5M_EXID_MATCH 0x00000032 #define SAMA5D27CU_EXID_MATCH 0x00000011 #define SAMA5D27CN_EXID_MATCH 0x00000021 +#define SAMA5D28C_D1G_EXID_MATCH 0x00000013 #define SAMA5D28CU_EXID_MATCH 0x00000010 #define SAMA5D28CN_EXID_MATCH 0x00000020 diff --git a/drivers/soc/bcm/Kconfig b/drivers/soc/bcm/Kconfig index 49f1e2a75d61..055a845ed979 100644 --- a/drivers/soc/bcm/Kconfig +++ b/drivers/soc/bcm/Kconfig @@ -20,4 +20,6 @@ config SOC_BRCMSTB If unsure, say N. +source "drivers/soc/bcm/brcmstb/Kconfig" + endmenu diff --git a/drivers/soc/bcm/brcmstb/Kconfig b/drivers/soc/bcm/brcmstb/Kconfig new file mode 100644 index 000000000000..d36f6e03c1a6 --- /dev/null +++ b/drivers/soc/bcm/brcmstb/Kconfig @@ -0,0 +1,10 @@ +if SOC_BRCMSTB + +config BRCMSTB_PM + bool "Support suspend/resume for STB platforms" + default y + depends on PM + depends on ARCH_BRCMSTB || BMIPS_GENERIC + select ARM_CPU_SUSPEND if ARM + +endif # SOC_BRCMSTB diff --git a/drivers/soc/bcm/brcmstb/Makefile b/drivers/soc/bcm/brcmstb/Makefile index 9120b2715d3e..01687c26535b 100644 --- a/drivers/soc/bcm/brcmstb/Makefile +++ b/drivers/soc/bcm/brcmstb/Makefile @@ -1 +1,2 @@ obj-y += common.o biuctrl.o +obj-$(CONFIG_BRCMSTB_PM) += pm/ diff --git a/drivers/soc/bcm/brcmstb/pm/Makefile b/drivers/soc/bcm/brcmstb/pm/Makefile new file mode 100644 index 000000000000..08bbd244ef11 --- /dev/null +++ b/drivers/soc/bcm/brcmstb/pm/Makefile @@ -0,0 +1,3 @@ +obj-$(CONFIG_ARM) += s2-arm.o pm-arm.o +AFLAGS_s2-arm.o := -march=armv7-a +obj-$(CONFIG_BMIPS_GENERIC) += s2-mips.o s3-mips.o pm-mips.o diff --git a/drivers/soc/bcm/brcmstb/pm/aon_defs.h b/drivers/soc/bcm/brcmstb/pm/aon_defs.h new file mode 100644 index 000000000000..fb936abd847d --- /dev/null +++ b/drivers/soc/bcm/brcmstb/pm/aon_defs.h @@ -0,0 +1,113 @@ +/* + * Always ON (AON) register interface between bootloader and Linux + * + * Copyright © 2014-2017 Broadcom + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __BRCMSTB_AON_DEFS_H__ +#define __BRCMSTB_AON_DEFS_H__ + +#include <linux/compiler.h> + +/* Magic number in upper 16-bits */ +#define BRCMSTB_S3_MAGIC_MASK 0xffff0000 +#define BRCMSTB_S3_MAGIC_SHORT 0x5AFE0000 + +enum { + /* Restore random key for AES memory verification (off = fixed key) */ + S3_FLAG_LOAD_RANDKEY = (1 << 0), + + /* Scratch buffer page table is present */ + S3_FLAG_SCRATCH_BUFFER_TABLE = (1 << 1), + + /* Skip all memory verification */ + S3_FLAG_NO_MEM_VERIFY = (1 << 2), + + /* + * Modification of this bit reserved for bootloader only. + * 1=PSCI started Linux, 0=Direct jump to Linux. + */ + S3_FLAG_PSCI_BOOT = (1 << 3), + + /* + * Modification of this bit reserved for bootloader only. + * 1=64 bit boot, 0=32 bit boot. + */ + S3_FLAG_BOOTED64 = (1 << 4), +}; + +#define BRCMSTB_HASH_LEN (128 / 8) /* 128-bit hash */ + +#define AON_REG_MAGIC_FLAGS 0x00 +#define AON_REG_CONTROL_LOW 0x04 +#define AON_REG_CONTROL_HIGH 0x08 +#define AON_REG_S3_HASH 0x0c /* hash of S3 params */ +#define AON_REG_CONTROL_HASH_LEN 0x1c +#define AON_REG_PANIC 0x20 + +#define BRCMSTB_S3_MAGIC 0x5AFEB007 +#define BRCMSTB_PANIC_MAGIC 0x512E115E +#define BOOTLOADER_SCRATCH_SIZE 64 +#define BRCMSTB_DTU_STATE_MAP_ENTRIES (8*1024) +#define BRCMSTB_DTU_CONFIG_ENTRIES (512) +#define BRCMSTB_DTU_COUNT (2) + +#define IMAGE_DESCRIPTORS_BUFSIZE (2 * 1024) +#define S3_BOOTLOADER_RESERVED (S3_FLAG_PSCI_BOOT | S3_FLAG_BOOTED64) + +struct brcmstb_bootloader_dtu_table { + uint32_t dtu_state_map[BRCMSTB_DTU_STATE_MAP_ENTRIES]; + uint32_t dtu_config[BRCMSTB_DTU_CONFIG_ENTRIES]; +}; + +/* + * Bootloader utilizes a custom parameter block left in DRAM for handling S3 + * warm resume + */ +struct brcmstb_s3_params { + /* scratch memory for bootloader */ + uint8_t scratch[BOOTLOADER_SCRATCH_SIZE]; + + uint32_t magic; /* BRCMSTB_S3_MAGIC */ + uint64_t reentry; /* PA */ + + /* descriptors */ + uint32_t hash[BRCMSTB_HASH_LEN / 4]; + + /* + * If 0, then ignore this parameter (there is only one set of + * descriptors) + * + * If non-0, then a second set of descriptors is stored at: + * + * descriptors + desc_offset_2 + * + * The MAC result of both descriptors is XOR'd and stored in @hash + */ + uint32_t desc_offset_2; + + /* + * (Physical) address of a brcmstb_bootloader_scratch_table, for + * providing a large DRAM buffer to the bootloader + */ + uint64_t buffer_table; + + uint32_t spare[70]; + + uint8_t descriptors[IMAGE_DESCRIPTORS_BUFSIZE]; + /* + * Must be last member of struct. See brcmstb_pm_s3_finish() for reason. + */ + struct brcmstb_bootloader_dtu_table dtu[BRCMSTB_DTU_COUNT]; +} __packed; + +#endif /* __BRCMSTB_AON_DEFS_H__ */ diff --git a/drivers/soc/bcm/brcmstb/pm/pm-arm.c b/drivers/soc/bcm/brcmstb/pm/pm-arm.c new file mode 100644 index 000000000000..dcf8c8065508 --- /dev/null +++ b/drivers/soc/bcm/brcmstb/pm/pm-arm.c @@ -0,0 +1,822 @@ +/* + * ARM-specific support for Broadcom STB S2/S3/S5 power management + * + * S2: clock gate CPUs and as many peripherals as possible + * S3: power off all of the chip except the Always ON (AON) island; keep DDR is + * self-refresh + * S5: (a.k.a. S3 cold boot) much like S3, except DDR is powered down, so we + * treat this mode like a soft power-off, with wakeup allowed from AON + * + * Copyright © 2014-2017 Broadcom + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#define pr_fmt(fmt) "brcmstb-pm: " fmt + +#include <linux/bitops.h> +#include <linux/compiler.h> +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/kconfig.h> +#include <linux/kernel.h> +#include <linux/memblock.h> +#include <linux/module.h> +#include <linux/notifier.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/printk.h> +#include <linux/proc_fs.h> +#include <linux/sizes.h> +#include <linux/slab.h> +#include <linux/sort.h> +#include <linux/suspend.h> +#include <linux/types.h> +#include <linux/uaccess.h> +#include <linux/soc/brcmstb/brcmstb.h> + +#include <asm/fncpy.h> +#include <asm/setup.h> +#include <asm/suspend.h> + +#include "pm.h" +#include "aon_defs.h" + +#define SHIMPHY_DDR_PAD_CNTRL 0x8c + +/* Method #0 */ +#define SHIMPHY_PAD_PLL_SEQUENCE BIT(8) +#define SHIMPHY_PAD_GATE_PLL_S3 BIT(9) + +/* Method #1 */ +#define PWRDWN_SEQ_NO_SEQUENCING 0 +#define PWRDWN_SEQ_HOLD_CHANNEL 1 +#define PWRDWN_SEQ_RESET_PLL 2 +#define PWRDWN_SEQ_POWERDOWN_PLL 3 + +#define SHIMPHY_PAD_S3_PWRDWN_SEQ_MASK 0x00f00000 +#define SHIMPHY_PAD_S3_PWRDWN_SEQ_SHIFT 20 + +#define DDR_FORCE_CKE_RST_N BIT(3) +#define DDR_PHY_RST_N BIT(2) +#define DDR_PHY_CKE BIT(1) + +#define DDR_PHY_NO_CHANNEL 0xffffffff + +#define MAX_NUM_MEMC 3 + +struct brcmstb_memc { + void __iomem *ddr_phy_base; + void __iomem *ddr_shimphy_base; + void __iomem *ddr_ctrl; +}; + +struct brcmstb_pm_control { + void __iomem *aon_ctrl_base; + void __iomem *aon_sram; + struct brcmstb_memc memcs[MAX_NUM_MEMC]; + + void __iomem *boot_sram; + size_t boot_sram_len; + + bool support_warm_boot; + size_t pll_status_offset; + int num_memc; + + struct brcmstb_s3_params *s3_params; + dma_addr_t s3_params_pa; + int s3entry_method; + u32 warm_boot_offset; + u32 phy_a_standby_ctrl_offs; + u32 phy_b_standby_ctrl_offs; + bool needs_ddr_pad; + struct platform_device *pdev; +}; + +enum bsp_initiate_command { + BSP_CLOCK_STOP = 0x00, + BSP_GEN_RANDOM_KEY = 0x4A, + BSP_RESTORE_RANDOM_KEY = 0x55, + BSP_GEN_FIXED_KEY = 0x63, +}; + +#define PM_INITIATE 0x01 +#define PM_INITIATE_SUCCESS 0x00 +#define PM_INITIATE_FAIL 0xfe + +static struct brcmstb_pm_control ctrl; + +static int (*brcmstb_pm_do_s2_sram)(void __iomem *aon_ctrl_base, + void __iomem *ddr_phy_pll_status); + +static int brcmstb_init_sram(struct device_node *dn) +{ + void __iomem *sram; + struct resource res; + int ret; + + ret = of_address_to_resource(dn, 0, &res); + if (ret) + return ret; + + /* Uncached, executable remapping of SRAM */ + sram = __arm_ioremap_exec(res.start, resource_size(&res), false); + if (!sram) + return -ENOMEM; + + ctrl.boot_sram = sram; + ctrl.boot_sram_len = resource_size(&res); + + return 0; +} + +static const struct of_device_id sram_dt_ids[] = { + { .compatible = "mmio-sram" }, + { /* sentinel */ } +}; + +static int do_bsp_initiate_command(enum bsp_initiate_command cmd) +{ + void __iomem *base = ctrl.aon_ctrl_base; + int ret; + int timeo = 1000 * 1000; /* 1 second */ + + writel_relaxed(0, base + AON_CTRL_PM_INITIATE); + (void)readl_relaxed(base + AON_CTRL_PM_INITIATE); + + /* Go! */ + writel_relaxed((cmd << 1) | PM_INITIATE, base + AON_CTRL_PM_INITIATE); + + /* + * If firmware doesn't support the 'ack', then just assume it's done + * after 10ms. Note that this only works for command 0, BSP_CLOCK_STOP + */ + if (of_machine_is_compatible("brcm,bcm74371a0")) { + (void)readl_relaxed(base + AON_CTRL_PM_INITIATE); + mdelay(10); + return 0; + } + + for (;;) { + ret = readl_relaxed(base + AON_CTRL_PM_INITIATE); + if (!(ret & PM_INITIATE)) + break; + if (timeo <= 0) { + pr_err("error: timeout waiting for BSP (%x)\n", ret); + break; + } + timeo -= 50; + udelay(50); + } + + return (ret & 0xff) != PM_INITIATE_SUCCESS; +} + +static int brcmstb_pm_handshake(void) +{ + void __iomem *base = ctrl.aon_ctrl_base; + u32 tmp; + int ret; + + /* BSP power handshake, v1 */ + tmp = readl_relaxed(base + AON_CTRL_HOST_MISC_CMDS); + tmp &= ~1UL; + writel_relaxed(tmp, base + AON_CTRL_HOST_MISC_CMDS); + (void)readl_relaxed(base + AON_CTRL_HOST_MISC_CMDS); + + ret = do_bsp_initiate_command(BSP_CLOCK_STOP); + if (ret) + pr_err("BSP handshake failed\n"); + + /* + * HACK: BSP may have internal race on the CLOCK_STOP command. + * Avoid touching the BSP for a few milliseconds. + */ + mdelay(3); + + return ret; +} + +static inline void shimphy_set(u32 value, u32 mask) +{ + int i; + + if (!ctrl.needs_ddr_pad) + return; + + for (i = 0; i < ctrl.num_memc; i++) { + u32 tmp; + + tmp = readl_relaxed(ctrl.memcs[i].ddr_shimphy_base + + SHIMPHY_DDR_PAD_CNTRL); + tmp = value | (tmp & mask); + writel_relaxed(tmp, ctrl.memcs[i].ddr_shimphy_base + + SHIMPHY_DDR_PAD_CNTRL); + } + wmb(); /* Complete sequence in order. */ +} + +static inline void ddr_ctrl_set(bool warmboot) +{ + int i; + + for (i = 0; i < ctrl.num_memc; i++) { + u32 tmp; + + tmp = readl_relaxed(ctrl.memcs[i].ddr_ctrl + + ctrl.warm_boot_offset); + if (warmboot) + tmp |= 1; + else + tmp &= ~1; /* Cold boot */ + writel_relaxed(tmp, ctrl.memcs[i].ddr_ctrl + + ctrl.warm_boot_offset); + } + /* Complete sequence in order */ + wmb(); +} + +static inline void s3entry_method0(void) +{ + shimphy_set(SHIMPHY_PAD_GATE_PLL_S3 | SHIMPHY_PAD_PLL_SEQUENCE, + 0xffffffff); +} + +static inline void s3entry_method1(void) +{ + /* + * S3 Entry Sequence + * ----------------- + * Step 1: SHIMPHY_ADDR_CNTL_0_DDR_PAD_CNTRL [ S3_PWRDWN_SEQ ] = 3 + * Step 2: MEMC_DDR_0_WARM_BOOT [ WARM_BOOT ] = 1 + */ + shimphy_set((PWRDWN_SEQ_POWERDOWN_PLL << + SHIMPHY_PAD_S3_PWRDWN_SEQ_SHIFT), + ~SHIMPHY_PAD_S3_PWRDWN_SEQ_MASK); + + ddr_ctrl_set(true); +} + +static inline void s5entry_method1(void) +{ + int i; + + /* + * S5 Entry Sequence + * ----------------- + * Step 1: SHIMPHY_ADDR_CNTL_0_DDR_PAD_CNTRL [ S3_PWRDWN_SEQ ] = 3 + * Step 2: MEMC_DDR_0_WARM_BOOT [ WARM_BOOT ] = 0 + * Step 3: DDR_PHY_CONTROL_REGS_[AB]_0_STANDBY_CONTROL[ CKE ] = 0 + * DDR_PHY_CONTROL_REGS_[AB]_0_STANDBY_CONTROL[ RST_N ] = 0 + */ + shimphy_set((PWRDWN_SEQ_POWERDOWN_PLL << + SHIMPHY_PAD_S3_PWRDWN_SEQ_SHIFT), + ~SHIMPHY_PAD_S3_PWRDWN_SEQ_MASK); + + ddr_ctrl_set(false); + + for (i = 0; i < ctrl.num_memc; i++) { + u32 tmp; + + /* Step 3: Channel A (RST_N = CKE = 0) */ + tmp = readl_relaxed(ctrl.memcs[i].ddr_phy_base + + ctrl.phy_a_standby_ctrl_offs); + tmp &= ~(DDR_PHY_RST_N | DDR_PHY_RST_N); + writel_relaxed(tmp, ctrl.memcs[i].ddr_phy_base + + ctrl.phy_a_standby_ctrl_offs); + + /* Step 3: Channel B? */ + if (ctrl.phy_b_standby_ctrl_offs != DDR_PHY_NO_CHANNEL) { + tmp = readl_relaxed(ctrl.memcs[i].ddr_phy_base + + ctrl.phy_b_standby_ctrl_offs); + tmp &= ~(DDR_PHY_RST_N | DDR_PHY_RST_N); + writel_relaxed(tmp, ctrl.memcs[i].ddr_phy_base + + ctrl.phy_b_standby_ctrl_offs); + } + } + /* Must complete */ + wmb(); +} + +/* + * Run a Power Management State Machine (PMSM) shutdown command and put the CPU + * into a low-power mode + */ +static void brcmstb_do_pmsm_power_down(unsigned long base_cmd, bool onewrite) +{ + void __iomem *base = ctrl.aon_ctrl_base; + + if ((ctrl.s3entry_method == 1) && (base_cmd == PM_COLD_CONFIG)) + s5entry_method1(); + + /* pm_start_pwrdn transition 0->1 */ + writel_relaxed(base_cmd, base + AON_CTRL_PM_CTRL); + + if (!onewrite) { + (void)readl_relaxed(base + AON_CTRL_PM_CTRL); + + writel_relaxed(base_cmd | PM_PWR_DOWN, base + AON_CTRL_PM_CTRL); + (void)readl_relaxed(base + AON_CTRL_PM_CTRL); + } + wfi(); +} + +/* Support S5 cold boot out of "poweroff" */ +static void brcmstb_pm_poweroff(void) +{ + brcmstb_pm_handshake(); + + /* Clear magic S3 warm-boot value */ + writel_relaxed(0, ctrl.aon_sram + AON_REG_MAGIC_FLAGS); + (void)readl_relaxed(ctrl.aon_sram + AON_REG_MAGIC_FLAGS); + + /* Skip wait-for-interrupt signal; just use a countdown */ + writel_relaxed(0x10, ctrl.aon_ctrl_base + AON_CTRL_PM_CPU_WAIT_COUNT); + (void)readl_relaxed(ctrl.aon_ctrl_base + AON_CTRL_PM_CPU_WAIT_COUNT); + + if (ctrl.s3entry_method == 1) { + shimphy_set((PWRDWN_SEQ_POWERDOWN_PLL << + SHIMPHY_PAD_S3_PWRDWN_SEQ_SHIFT), + ~SHIMPHY_PAD_S3_PWRDWN_SEQ_MASK); + ddr_ctrl_set(false); + brcmstb_do_pmsm_power_down(M1_PM_COLD_CONFIG, true); + return; /* We should never actually get here */ + } + + brcmstb_do_pmsm_power_down(PM_COLD_CONFIG, false); +} + +static void *brcmstb_pm_copy_to_sram(void *fn, size_t len) +{ + unsigned int size = ALIGN(len, FNCPY_ALIGN); + + if (ctrl.boot_sram_len < size) { + pr_err("standby code will not fit in SRAM\n"); + return NULL; + } + + return fncpy(ctrl.boot_sram, fn, size); +} + +/* + * S2 suspend/resume picks up where we left off, so we must execute carefully + * from SRAM, in order to allow DDR to come back up safely before we continue. + */ +static int brcmstb_pm_s2(void) +{ + /* A previous S3 can set a value hazardous to S2, so make sure. */ + if (ctrl.s3entry_method == 1) { + shimphy_set((PWRDWN_SEQ_NO_SEQUENCING << + SHIMPHY_PAD_S3_PWRDWN_SEQ_SHIFT), + ~SHIMPHY_PAD_S3_PWRDWN_SEQ_MASK); + ddr_ctrl_set(false); + } + + brcmstb_pm_do_s2_sram = brcmstb_pm_copy_to_sram(&brcmstb_pm_do_s2, + brcmstb_pm_do_s2_sz); + if (!brcmstb_pm_do_s2_sram) + return -EINVAL; + + return brcmstb_pm_do_s2_sram(ctrl.aon_ctrl_base, + ctrl.memcs[0].ddr_phy_base + + ctrl.pll_status_offset); +} + +/* + * This function is called on a new stack, so don't allow inlining (which will + * generate stack references on the old stack). It cannot be made static because + * it is referenced from brcmstb_pm_s3() + */ +noinline int brcmstb_pm_s3_finish(void) +{ + struct brcmstb_s3_params *params = ctrl.s3_params; + dma_addr_t params_pa = ctrl.s3_params_pa; + phys_addr_t reentry = virt_to_phys(&cpu_resume); + enum bsp_initiate_command cmd; + u32 flags; + + /* + * Clear parameter structure, but not DTU area, which has already been + * filled in. We know DTU is a the end, so we can just subtract its + * size. + */ + memset(params, 0, sizeof(*params) - sizeof(params->dtu)); + + flags = readl_relaxed(ctrl.aon_sram + AON_REG_MAGIC_FLAGS); + + flags &= S3_BOOTLOADER_RESERVED; + flags |= S3_FLAG_NO_MEM_VERIFY; + flags |= S3_FLAG_LOAD_RANDKEY; + + /* Load random / fixed key */ + if (flags & S3_FLAG_LOAD_RANDKEY) + cmd = BSP_GEN_RANDOM_KEY; + else + cmd = BSP_GEN_FIXED_KEY; + if (do_bsp_initiate_command(cmd)) { + pr_info("key loading failed\n"); + return -EIO; + } + + params->magic = BRCMSTB_S3_MAGIC; + params->reentry = reentry; + + /* No more writes to DRAM */ + flush_cache_all(); + + flags |= BRCMSTB_S3_MAGIC_SHORT; + + writel_relaxed(flags, ctrl.aon_sram + AON_REG_MAGIC_FLAGS); + writel_relaxed(lower_32_bits(params_pa), + ctrl.aon_sram + AON_REG_CONTROL_LOW); + writel_relaxed(upper_32_bits(params_pa), + ctrl.aon_sram + AON_REG_CONTROL_HIGH); + + switch (ctrl.s3entry_method) { + case 0: + s3entry_method0(); + brcmstb_do_pmsm_power_down(PM_WARM_CONFIG, false); + break; + case 1: + s3entry_method1(); + brcmstb_do_pmsm_power_down(M1_PM_WARM_CONFIG, true); + break; + default: + return -EINVAL; + } + + /* Must have been interrupted from wfi()? */ + return -EINTR; +} + +static int brcmstb_pm_do_s3(unsigned long sp) +{ + unsigned long save_sp; + int ret; + + asm volatile ( + "mov %[save], sp\n" + "mov sp, %[new]\n" + "bl brcmstb_pm_s3_finish\n" + "mov %[ret], r0\n" + "mov %[new], sp\n" + "mov sp, %[save]\n" + : [save] "=&r" (save_sp), [ret] "=&r" (ret) + : [new] "r" (sp) + ); + + return ret; +} + +static int brcmstb_pm_s3(void) +{ + void __iomem *sp = ctrl.boot_sram + ctrl.boot_sram_len; + + return cpu_suspend((unsigned long)sp, brcmstb_pm_do_s3); +} + +static int brcmstb_pm_standby(bool deep_standby) +{ + int ret; + + if (brcmstb_pm_handshake()) + return -EIO; + + if (deep_standby) + ret = brcmstb_pm_s3(); + else + ret = brcmstb_pm_s2(); + if (ret) + pr_err("%s: standby failed\n", __func__); + + return ret; +} + +static int brcmstb_pm_enter(suspend_state_t state) +{ + int ret = -EINVAL; + + switch (state) { + case PM_SUSPEND_STANDBY: + ret = brcmstb_pm_standby(false); + break; + case PM_SUSPEND_MEM: + ret = brcmstb_pm_standby(true); + break; + } + + return ret; +} + +static int brcmstb_pm_valid(suspend_state_t state) +{ + switch (state) { + case PM_SUSPEND_STANDBY: + return true; + case PM_SUSPEND_MEM: + return ctrl.support_warm_boot; + default: + return false; + } +} + +static const struct platform_suspend_ops brcmstb_pm_ops = { + .enter = brcmstb_pm_enter, + .valid = brcmstb_pm_valid, +}; + +static const struct of_device_id aon_ctrl_dt_ids[] = { + { .compatible = "brcm,brcmstb-aon-ctrl" }, + {} +}; + +struct ddr_phy_ofdata { + bool supports_warm_boot; + size_t pll_status_offset; + int s3entry_method; + u32 warm_boot_offset; + u32 phy_a_standby_ctrl_offs; + u32 phy_b_standby_ctrl_offs; +}; + +static struct ddr_phy_ofdata ddr_phy_71_1 = { + .supports_warm_boot = true, + .pll_status_offset = 0x0c, + .s3entry_method = 1, + .warm_boot_offset = 0x2c, + .phy_a_standby_ctrl_offs = 0x198, + .phy_b_standby_ctrl_offs = DDR_PHY_NO_CHANNEL +}; + +static struct ddr_phy_ofdata ddr_phy_72_0 = { + .supports_warm_boot = true, + .pll_status_offset = 0x10, + .s3entry_method = 1, + .warm_boot_offset = 0x40, + .phy_a_standby_ctrl_offs = 0x2a4, + .phy_b_standby_ctrl_offs = 0x8a4 +}; + +static struct ddr_phy_ofdata ddr_phy_225_1 = { + .supports_warm_boot = false, + .pll_status_offset = 0x4, + .s3entry_method = 0 +}; + +static struct ddr_phy_ofdata ddr_phy_240_1 = { + .supports_warm_boot = true, + .pll_status_offset = 0x4, + .s3entry_method = 0 +}; + +static const struct of_device_id ddr_phy_dt_ids[] = { + { + .compatible = "brcm,brcmstb-ddr-phy-v71.1", + .data = &ddr_phy_71_1, + }, + { + .compatible = "brcm,brcmstb-ddr-phy-v72.0", + .data = &ddr_phy_72_0, + }, + { + .compatible = "brcm,brcmstb-ddr-phy-v225.1", + .data = &ddr_phy_225_1, + }, + { + .compatible = "brcm,brcmstb-ddr-phy-v240.1", + .data = &ddr_phy_240_1, + }, + { + /* Same as v240.1, for the registers we care about */ + .compatible = "brcm,brcmstb-ddr-phy-v240.2", + .data = &ddr_phy_240_1, + }, + {} +}; + +struct ddr_seq_ofdata { + bool needs_ddr_pad; + u32 warm_boot_offset; +}; + +static const struct ddr_seq_ofdata ddr_seq_b22 = { + .needs_ddr_pad = false, + .warm_boot_offset = 0x2c, +}; + +static const struct ddr_seq_ofdata ddr_seq = { + .needs_ddr_pad = true, +}; + +static const struct of_device_id ddr_shimphy_dt_ids[] = { + { .compatible = "brcm,brcmstb-ddr-shimphy-v1.0" }, + {} +}; + +static const struct of_device_id brcmstb_memc_of_match[] = { + { + .compatible = "brcm,brcmstb-memc-ddr-rev-b.2.2", + .data = &ddr_seq_b22, + }, + { + .compatible = "brcm,brcmstb-memc-ddr", + .data = &ddr_seq, + }, + {}, +}; + +static void __iomem *brcmstb_ioremap_match(const struct of_device_id *matches, + int index, const void **ofdata) +{ + struct device_node *dn; + const struct of_device_id *match; + + dn = of_find_matching_node_and_match(NULL, matches, &match); + if (!dn) + return ERR_PTR(-EINVAL); + + if (ofdata) + *ofdata = match->data; + + return of_io_request_and_map(dn, index, dn->full_name); +} + +static int brcmstb_pm_panic_notify(struct notifier_block *nb, + unsigned long action, void *data) +{ + writel_relaxed(BRCMSTB_PANIC_MAGIC, ctrl.aon_sram + AON_REG_PANIC); + + return NOTIFY_DONE; +} + +static struct notifier_block brcmstb_pm_panic_nb = { + .notifier_call = brcmstb_pm_panic_notify, +}; + +static int brcmstb_pm_probe(struct platform_device *pdev) +{ + const struct ddr_phy_ofdata *ddr_phy_data; + const struct ddr_seq_ofdata *ddr_seq_data; + const struct of_device_id *of_id = NULL; + struct device_node *dn; + void __iomem *base; + int ret, i; + + /* AON ctrl registers */ + base = brcmstb_ioremap_match(aon_ctrl_dt_ids, 0, NULL); + if (IS_ERR(base)) { + pr_err("error mapping AON_CTRL\n"); + return PTR_ERR(base); + } + ctrl.aon_ctrl_base = base; + + /* AON SRAM registers */ + base = brcmstb_ioremap_match(aon_ctrl_dt_ids, 1, NULL); + if (IS_ERR(base)) { + /* Assume standard offset */ + ctrl.aon_sram = ctrl.aon_ctrl_base + + AON_CTRL_SYSTEM_DATA_RAM_OFS; + } else { + ctrl.aon_sram = base; + } + + writel_relaxed(0, ctrl.aon_sram + AON_REG_PANIC); + + /* DDR PHY registers */ + base = brcmstb_ioremap_match(ddr_phy_dt_ids, 0, + (const void **)&ddr_phy_data); + if (IS_ERR(base)) { + pr_err("error mapping DDR PHY\n"); + return PTR_ERR(base); + } + ctrl.support_warm_boot = ddr_phy_data->supports_warm_boot; + ctrl.pll_status_offset = ddr_phy_data->pll_status_offset; + /* Only need DDR PHY 0 for now? */ + ctrl.memcs[0].ddr_phy_base = base; + ctrl.s3entry_method = ddr_phy_data->s3entry_method; + ctrl.phy_a_standby_ctrl_offs = ddr_phy_data->phy_a_standby_ctrl_offs; + ctrl.phy_b_standby_ctrl_offs = ddr_phy_data->phy_b_standby_ctrl_offs; + /* + * Slightly grosss to use the phy ver to get a memc, + * offset but that is the only versioned things so far + * we can test for. + */ + ctrl.warm_boot_offset = ddr_phy_data->warm_boot_offset; + + /* DDR SHIM-PHY registers */ + for_each_matching_node(dn, ddr_shimphy_dt_ids) { + i = ctrl.num_memc; + if (i >= MAX_NUM_MEMC) { + pr_warn("too many MEMCs (max %d)\n", MAX_NUM_MEMC); + break; + } + + base = of_io_request_and_map(dn, 0, dn->full_name); + if (IS_ERR(base)) { + if (!ctrl.support_warm_boot) + break; + + pr_err("error mapping DDR SHIMPHY %d\n", i); + return PTR_ERR(base); + } + ctrl.memcs[i].ddr_shimphy_base = base; + ctrl.num_memc++; + } + + /* Sequencer DRAM Param and Control Registers */ + i = 0; + for_each_matching_node(dn, brcmstb_memc_of_match) { + base = of_iomap(dn, 0); + if (!base) { + pr_err("error mapping DDR Sequencer %d\n", i); + return -ENOMEM; + } + + of_id = of_match_node(brcmstb_memc_of_match, dn); + if (!of_id) { + iounmap(base); + return -EINVAL; + } + + ddr_seq_data = of_id->data; + ctrl.needs_ddr_pad = ddr_seq_data->needs_ddr_pad; + /* Adjust warm boot offset based on the DDR sequencer */ + if (ddr_seq_data->warm_boot_offset) + ctrl.warm_boot_offset = ddr_seq_data->warm_boot_offset; + + ctrl.memcs[i].ddr_ctrl = base; + i++; + } + + pr_debug("PM: supports warm boot:%d, method:%d, wboffs:%x\n", + ctrl.support_warm_boot, ctrl.s3entry_method, + ctrl.warm_boot_offset); + + dn = of_find_matching_node(NULL, sram_dt_ids); + if (!dn) { + pr_err("SRAM not found\n"); + return -EINVAL; + } + + ret = brcmstb_init_sram(dn); + if (ret) { + pr_err("error setting up SRAM for PM\n"); + return ret; + } + + ctrl.pdev = pdev; + + ctrl.s3_params = kmalloc(sizeof(*ctrl.s3_params), GFP_KERNEL); + if (!ctrl.s3_params) + return -ENOMEM; + ctrl.s3_params_pa = dma_map_single(&pdev->dev, ctrl.s3_params, + sizeof(*ctrl.s3_params), + DMA_TO_DEVICE); + if (dma_mapping_error(&pdev->dev, ctrl.s3_params_pa)) { + pr_err("error mapping DMA memory\n"); + ret = -ENOMEM; + goto out; + } + + atomic_notifier_chain_register(&panic_notifier_list, + &brcmstb_pm_panic_nb); + + pm_power_off = brcmstb_pm_poweroff; + suspend_set_ops(&brcmstb_pm_ops); + + return 0; + +out: + kfree(ctrl.s3_params); + + pr_warn("PM: initialization failed with code %d\n", ret); + + return ret; +} + +static struct platform_driver brcmstb_pm_driver = { + .driver = { + .name = "brcmstb-pm", + .of_match_table = aon_ctrl_dt_ids, + }, +}; + +static int __init brcmstb_pm_init(void) +{ + return platform_driver_probe(&brcmstb_pm_driver, + brcmstb_pm_probe); +} +module_init(brcmstb_pm_init); diff --git a/drivers/soc/bcm/brcmstb/pm/pm-mips.c b/drivers/soc/bcm/brcmstb/pm/pm-mips.c new file mode 100644 index 000000000000..9300b5f62e56 --- /dev/null +++ b/drivers/soc/bcm/brcmstb/pm/pm-mips.c @@ -0,0 +1,461 @@ +/* + * MIPS-specific support for Broadcom STB S2/S3/S5 power management + * + * Copyright (C) 2016-2017 Broadcom + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/printk.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/delay.h> +#include <linux/suspend.h> +#include <asm/bmips.h> +#include <asm/tlbflush.h> + +#include "pm.h" + +#define S2_NUM_PARAMS 6 +#define MAX_NUM_MEMC 3 + +/* S3 constants */ +#define MAX_GP_REGS 16 +#define MAX_CP0_REGS 32 +#define NUM_MEMC_CLIENTS 128 +#define AON_CTRL_RAM_SIZE 128 +#define BRCMSTB_S3_MAGIC 0x5AFEB007 + +#define CLEAR_RESET_MASK 0x01 + +/* Index each CP0 register that needs to be saved */ +#define CONTEXT 0 +#define USER_LOCAL 1 +#define PGMK 2 +#define HWRENA 3 +#define COMPARE 4 +#define STATUS 5 +#define CONFIG 6 +#define MODE 7 +#define EDSP 8 +#define BOOT_VEC 9 +#define EBASE 10 + +struct brcmstb_memc { + void __iomem *ddr_phy_base; + void __iomem *arb_base; +}; + +struct brcmstb_pm_control { + void __iomem *aon_ctrl_base; + void __iomem *aon_sram_base; + void __iomem *timers_base; + struct brcmstb_memc memcs[MAX_NUM_MEMC]; + int num_memc; +}; + +struct brcm_pm_s3_context { + u32 cp0_regs[MAX_CP0_REGS]; + u32 memc0_rts[NUM_MEMC_CLIENTS]; + u32 sc_boot_vec; +}; + +struct brcmstb_mem_transfer; + +struct brcmstb_mem_transfer { + struct brcmstb_mem_transfer *next; + void *src; + void *dst; + dma_addr_t pa_src; + dma_addr_t pa_dst; + u32 len; + u8 key; + u8 mode; + u8 src_remapped; + u8 dst_remapped; + u8 src_dst_remapped; +}; + +#define AON_SAVE_SRAM(base, idx, val) \ + __raw_writel(val, base + (idx << 2)) + +/* Used for saving registers in asm */ +u32 gp_regs[MAX_GP_REGS]; + +#define BSP_CLOCK_STOP 0x00 +#define PM_INITIATE 0x01 + +static struct brcmstb_pm_control ctrl; + +static void brcm_pm_save_cp0_context(struct brcm_pm_s3_context *ctx) +{ + /* Generic MIPS */ + ctx->cp0_regs[CONTEXT] = read_c0_context(); + ctx->cp0_regs[USER_LOCAL] = read_c0_userlocal(); + ctx->cp0_regs[PGMK] = read_c0_pagemask(); + ctx->cp0_regs[HWRENA] = read_c0_cache(); + ctx->cp0_regs[COMPARE] = read_c0_compare(); + ctx->cp0_regs[STATUS] = read_c0_status(); + + /* Broadcom specific */ + ctx->cp0_regs[CONFIG] = read_c0_brcm_config(); + ctx->cp0_regs[MODE] = read_c0_brcm_mode(); + ctx->cp0_regs[EDSP] = read_c0_brcm_edsp(); + ctx->cp0_regs[BOOT_VEC] = read_c0_brcm_bootvec(); + ctx->cp0_regs[EBASE] = read_c0_ebase(); + + ctx->sc_boot_vec = bmips_read_zscm_reg(0xa0); +} + +static void brcm_pm_restore_cp0_context(struct brcm_pm_s3_context *ctx) +{ + /* Restore cp0 state */ + bmips_write_zscm_reg(0xa0, ctx->sc_boot_vec); + + /* Generic MIPS */ + write_c0_context(ctx->cp0_regs[CONTEXT]); + write_c0_userlocal(ctx->cp0_regs[USER_LOCAL]); + write_c0_pagemask(ctx->cp0_regs[PGMK]); + write_c0_cache(ctx->cp0_regs[HWRENA]); + write_c0_compare(ctx->cp0_regs[COMPARE]); + write_c0_status(ctx->cp0_regs[STATUS]); + + /* Broadcom specific */ + write_c0_brcm_config(ctx->cp0_regs[CONFIG]); + write_c0_brcm_mode(ctx->cp0_regs[MODE]); + write_c0_brcm_edsp(ctx->cp0_regs[EDSP]); + write_c0_brcm_bootvec(ctx->cp0_regs[BOOT_VEC]); + write_c0_ebase(ctx->cp0_regs[EBASE]); +} + +static void brcmstb_pm_handshake(void) +{ + void __iomem *base = ctrl.aon_ctrl_base; + u32 tmp; + + /* BSP power handshake, v1 */ + tmp = __raw_readl(base + AON_CTRL_HOST_MISC_CMDS); + tmp &= ~1UL; + __raw_writel(tmp, base + AON_CTRL_HOST_MISC_CMDS); + (void)__raw_readl(base + AON_CTRL_HOST_MISC_CMDS); + + __raw_writel(0, base + AON_CTRL_PM_INITIATE); + (void)__raw_readl(base + AON_CTRL_PM_INITIATE); + __raw_writel(BSP_CLOCK_STOP | PM_INITIATE, + base + AON_CTRL_PM_INITIATE); + /* + * HACK: BSP may have internal race on the CLOCK_STOP command. + * Avoid touching the BSP for a few milliseconds. + */ + mdelay(3); +} + +static void brcmstb_pm_s5(void) +{ + void __iomem *base = ctrl.aon_ctrl_base; + + brcmstb_pm_handshake(); + + /* Clear magic s3 warm-boot value */ + AON_SAVE_SRAM(ctrl.aon_sram_base, 0, 0); + + /* Set the countdown */ + __raw_writel(0x10, base + AON_CTRL_PM_CPU_WAIT_COUNT); + (void)__raw_readl(base + AON_CTRL_PM_CPU_WAIT_COUNT); + + /* Prepare to S5 cold boot */ + __raw_writel(PM_COLD_CONFIG, base + AON_CTRL_PM_CTRL); + (void)__raw_readl(base + AON_CTRL_PM_CTRL); + + __raw_writel((PM_COLD_CONFIG | PM_PWR_DOWN), base + + AON_CTRL_PM_CTRL); + (void)__raw_readl(base + AON_CTRL_PM_CTRL); + + __asm__ __volatile__( + " wait\n" + : : : "memory"); +} + +static int brcmstb_pm_s3(void) +{ + struct brcm_pm_s3_context s3_context; + void __iomem *memc_arb_base; + unsigned long flags; + u32 tmp; + int i; + + /* Prepare for s3 */ + AON_SAVE_SRAM(ctrl.aon_sram_base, 0, BRCMSTB_S3_MAGIC); + AON_SAVE_SRAM(ctrl.aon_sram_base, 1, (u32)&s3_reentry); + AON_SAVE_SRAM(ctrl.aon_sram_base, 2, 0); + + /* Clear RESET_HISTORY */ + tmp = __raw_readl(ctrl.aon_ctrl_base + AON_CTRL_RESET_CTRL); + tmp &= ~CLEAR_RESET_MASK; + __raw_writel(tmp, ctrl.aon_ctrl_base + AON_CTRL_RESET_CTRL); + + local_irq_save(flags); + + /* Inhibit DDR_RSTb pulse for both MMCs*/ + for (i = 0; i < ctrl.num_memc; i++) { + tmp = __raw_readl(ctrl.memcs[i].ddr_phy_base + + DDR40_PHY_CONTROL_REGS_0_STANDBY_CTRL); + + tmp &= ~0x0f; + __raw_writel(tmp, ctrl.memcs[i].ddr_phy_base + + DDR40_PHY_CONTROL_REGS_0_STANDBY_CTRL); + tmp |= (0x05 | BIT(5)); + __raw_writel(tmp, ctrl.memcs[i].ddr_phy_base + + DDR40_PHY_CONTROL_REGS_0_STANDBY_CTRL); + } + + /* Save CP0 context */ + brcm_pm_save_cp0_context(&s3_context); + + /* Save RTS(skip debug register) */ + memc_arb_base = ctrl.memcs[0].arb_base + 4; + for (i = 0; i < NUM_MEMC_CLIENTS; i++) { + s3_context.memc0_rts[i] = __raw_readl(memc_arb_base); + memc_arb_base += 4; + } + + /* Save I/O context */ + local_flush_tlb_all(); + _dma_cache_wback_inv(0, ~0); + + brcm_pm_do_s3(ctrl.aon_ctrl_base, current_cpu_data.dcache.linesz); + + /* CPU reconfiguration */ + local_flush_tlb_all(); + bmips_cpu_setup(); + cpumask_clear(&bmips_booted_mask); + + /* Restore RTS (skip debug register) */ + memc_arb_base = ctrl.memcs[0].arb_base + 4; + for (i = 0; i < NUM_MEMC_CLIENTS; i++) { + __raw_writel(s3_context.memc0_rts[i], memc_arb_base); + memc_arb_base += 4; + } + + /* restore CP0 context */ + brcm_pm_restore_cp0_context(&s3_context); + + local_irq_restore(flags); + + return 0; +} + +static int brcmstb_pm_s2(void) +{ + /* + * We need to pass 6 arguments to an assembly function. Lets avoid the + * stack and pass arguments in a explicit 4 byte array. The assembly + * code assumes all arguments are 4 bytes and arguments are ordered + * like so: + * + * 0: AON_CTRl base register + * 1: DDR_PHY base register + * 2: TIMERS base resgister + * 3: I-Cache line size + * 4: Restart vector address + * 5: Restart vector size + */ + u32 s2_params[6]; + + /* Prepare s2 parameters */ + s2_params[0] = (u32)ctrl.aon_ctrl_base; + s2_params[1] = (u32)ctrl.memcs[0].ddr_phy_base; + s2_params[2] = (u32)ctrl.timers_base; + s2_params[3] = (u32)current_cpu_data.icache.linesz; + s2_params[4] = (u32)BMIPS_WARM_RESTART_VEC; + s2_params[5] = (u32)(bmips_smp_int_vec_end - + bmips_smp_int_vec); + + /* Drop to standby */ + brcm_pm_do_s2(s2_params); + + return 0; +} + +static int brcmstb_pm_standby(bool deep_standby) +{ + brcmstb_pm_handshake(); + + /* Send IRQs to BMIPS_WARM_RESTART_VEC */ + clear_c0_cause(CAUSEF_IV); + irq_disable_hazard(); + set_c0_status(ST0_BEV); + irq_disable_hazard(); + + if (deep_standby) + brcmstb_pm_s3(); + else + brcmstb_pm_s2(); + + /* Send IRQs to normal runtime vectors */ + clear_c0_status(ST0_BEV); + irq_disable_hazard(); + set_c0_cause(CAUSEF_IV); + irq_disable_hazard(); + + return 0; +} + +static int brcmstb_pm_enter(suspend_state_t state) +{ + int ret = -EINVAL; + + switch (state) { + case PM_SUSPEND_STANDBY: + ret = brcmstb_pm_standby(false); + break; + case PM_SUSPEND_MEM: + ret = brcmstb_pm_standby(true); + break; + } + + return ret; +} + +static int brcmstb_pm_valid(suspend_state_t state) +{ + switch (state) { + case PM_SUSPEND_STANDBY: + return true; + case PM_SUSPEND_MEM: + return true; + default: + return false; + } +} + +static const struct platform_suspend_ops brcmstb_pm_ops = { + .enter = brcmstb_pm_enter, + .valid = brcmstb_pm_valid, +}; + +static const struct of_device_id aon_ctrl_dt_ids[] = { + { .compatible = "brcm,brcmstb-aon-ctrl" }, + { /* sentinel */ } +}; + +static const struct of_device_id ddr_phy_dt_ids[] = { + { .compatible = "brcm,brcmstb-ddr-phy" }, + { /* sentinel */ } +}; + +static const struct of_device_id arb_dt_ids[] = { + { .compatible = "brcm,brcmstb-memc-arb" }, + { /* sentinel */ } +}; + +static const struct of_device_id timers_ids[] = { + { .compatible = "brcm,brcmstb-timers" }, + { /* sentinel */ } +}; + +static inline void __iomem *brcmstb_ioremap_node(struct device_node *dn, + int index) +{ + return of_io_request_and_map(dn, index, dn->full_name); +} + +static void __iomem *brcmstb_ioremap_match(const struct of_device_id *matches, + int index, const void **ofdata) +{ + struct device_node *dn; + const struct of_device_id *match; + + dn = of_find_matching_node_and_match(NULL, matches, &match); + if (!dn) + return ERR_PTR(-EINVAL); + + if (ofdata) + *ofdata = match->data; + + return brcmstb_ioremap_node(dn, index); +} + +static int brcmstb_pm_init(void) +{ + struct device_node *dn; + void __iomem *base; + int i; + + /* AON ctrl registers */ + base = brcmstb_ioremap_match(aon_ctrl_dt_ids, 0, NULL); + if (IS_ERR(base)) { + pr_err("error mapping AON_CTRL\n"); + goto aon_err; + } + ctrl.aon_ctrl_base = base; + + /* AON SRAM registers */ + base = brcmstb_ioremap_match(aon_ctrl_dt_ids, 1, NULL); + if (IS_ERR(base)) { + pr_err("error mapping AON_SRAM\n"); + goto sram_err; + } + ctrl.aon_sram_base = base; + + ctrl.num_memc = 0; + /* Map MEMC DDR PHY registers */ + for_each_matching_node(dn, ddr_phy_dt_ids) { + i = ctrl.num_memc; + if (i >= MAX_NUM_MEMC) { + pr_warn("Too many MEMCs (max %d)\n", MAX_NUM_MEMC); + break; + } + base = brcmstb_ioremap_node(dn, 0); + if (IS_ERR(base)) + goto ddr_err; + + ctrl.memcs[i].ddr_phy_base = base; + ctrl.num_memc++; + } + + /* MEMC ARB registers */ + base = brcmstb_ioremap_match(arb_dt_ids, 0, NULL); + if (IS_ERR(base)) { + pr_err("error mapping MEMC ARB\n"); + goto ddr_err; + } + ctrl.memcs[0].arb_base = base; + + /* Timer registers */ + base = brcmstb_ioremap_match(timers_ids, 0, NULL); + if (IS_ERR(base)) { + pr_err("error mapping timers\n"); + goto tmr_err; + } + ctrl.timers_base = base; + + /* s3 cold boot aka s5 */ + pm_power_off = brcmstb_pm_s5; + + suspend_set_ops(&brcmstb_pm_ops); + + return 0; + +tmr_err: + iounmap(ctrl.memcs[0].arb_base); +ddr_err: + for (i = 0; i < ctrl.num_memc; i++) + iounmap(ctrl.memcs[i].ddr_phy_base); + + iounmap(ctrl.aon_sram_base); +sram_err: + iounmap(ctrl.aon_ctrl_base); +aon_err: + return PTR_ERR(base); +} +arch_initcall(brcmstb_pm_init); diff --git a/drivers/soc/bcm/brcmstb/pm/pm.h b/drivers/soc/bcm/brcmstb/pm/pm.h new file mode 100644 index 000000000000..b7d35ac70e60 --- /dev/null +++ b/drivers/soc/bcm/brcmstb/pm/pm.h @@ -0,0 +1,89 @@ +/* + * Definitions for Broadcom STB power management / Always ON (AON) block + * + * Copyright © 2016-2017 Broadcom + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __BRCMSTB_PM_H__ +#define __BRCMSTB_PM_H__ + +#define AON_CTRL_RESET_CTRL 0x00 +#define AON_CTRL_PM_CTRL 0x04 +#define AON_CTRL_PM_STATUS 0x08 +#define AON_CTRL_PM_CPU_WAIT_COUNT 0x10 +#define AON_CTRL_PM_INITIATE 0x88 +#define AON_CTRL_HOST_MISC_CMDS 0x8c +#define AON_CTRL_SYSTEM_DATA_RAM_OFS 0x200 + +/* MIPS PM constants */ +/* MEMC0 offsets */ +#define DDR40_PHY_CONTROL_REGS_0_PLL_STATUS 0x10 +#define DDR40_PHY_CONTROL_REGS_0_STANDBY_CTRL 0xa4 + +/* TIMER offsets */ +#define TIMER_TIMER1_CTRL 0x0c +#define TIMER_TIMER1_STAT 0x1c + +/* TIMER defines */ +#define RESET_TIMER 0x0 +#define START_TIMER 0xbfffffff +#define TIMER_MASK 0x3fffffff + +/* PM_CTRL bitfield (Method #0) */ +#define PM_FAST_PWRDOWN (1 << 6) +#define PM_WARM_BOOT (1 << 5) +#define PM_DEEP_STANDBY (1 << 4) +#define PM_CPU_PWR (1 << 3) +#define PM_USE_CPU_RDY (1 << 2) +#define PM_PLL_PWRDOWN (1 << 1) +#define PM_PWR_DOWN (1 << 0) + +/* PM_CTRL bitfield (Method #1) */ +#define PM_DPHY_STANDBY_CLEAR (1 << 20) +#define PM_MIN_S3_WIDTH_TIMER_BYPASS (1 << 7) + +#define PM_S2_COMMAND (PM_PLL_PWRDOWN | PM_USE_CPU_RDY | PM_PWR_DOWN) + +/* Method 0 bitmasks */ +#define PM_COLD_CONFIG (PM_PLL_PWRDOWN | PM_DEEP_STANDBY) +#define PM_WARM_CONFIG (PM_COLD_CONFIG | PM_USE_CPU_RDY | PM_WARM_BOOT) + +/* Method 1 bitmask */ +#define M1_PM_WARM_CONFIG (PM_DPHY_STANDBY_CLEAR | \ + PM_MIN_S3_WIDTH_TIMER_BYPASS | \ + PM_WARM_BOOT | PM_DEEP_STANDBY | \ + PM_PLL_PWRDOWN | PM_PWR_DOWN) + +#define M1_PM_COLD_CONFIG (PM_DPHY_STANDBY_CLEAR | \ + PM_MIN_S3_WIDTH_TIMER_BYPASS | \ + PM_DEEP_STANDBY | \ + PM_PLL_PWRDOWN | PM_PWR_DOWN) + +#ifndef __ASSEMBLY__ + +#ifndef CONFIG_MIPS +extern const unsigned long brcmstb_pm_do_s2_sz; +extern asmlinkage int brcmstb_pm_do_s2(void __iomem *aon_ctrl_base, + void __iomem *ddr_phy_pll_status); +#else +/* s2 asm */ +extern asmlinkage int brcm_pm_do_s2(u32 *s2_params); + +/* s3 asm */ +extern asmlinkage int brcm_pm_do_s3(void __iomem *aon_ctrl_base, + int dcache_linesz); +extern int s3_reentry; +#endif /* CONFIG_MIPS */ + +#endif + +#endif /* __BRCMSTB_PM_H__ */ diff --git a/drivers/soc/bcm/brcmstb/pm/s2-arm.S b/drivers/soc/bcm/brcmstb/pm/s2-arm.S new file mode 100644 index 000000000000..1d472d564638 --- /dev/null +++ b/drivers/soc/bcm/brcmstb/pm/s2-arm.S @@ -0,0 +1,76 @@ +/* + * Copyright © 2014-2017 Broadcom + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/linkage.h> +#include <asm/assembler.h> + +#include "pm.h" + + .text + .align 3 + +#define AON_CTRL_REG r10 +#define DDR_PHY_STATUS_REG r11 + +/* + * r0: AON_CTRL base address + * r1: DDRY PHY PLL status register address + */ +ENTRY(brcmstb_pm_do_s2) + stmfd sp!, {r4-r11, lr} + mov AON_CTRL_REG, r0 + mov DDR_PHY_STATUS_REG, r1 + + /* Flush memory transactions */ + dsb + + /* Cache DDR_PHY_STATUS_REG translation */ + ldr r0, [DDR_PHY_STATUS_REG] + + /* power down request */ + ldr r0, =PM_S2_COMMAND + ldr r1, =0 + str r1, [AON_CTRL_REG, #AON_CTRL_PM_CTRL] + ldr r1, [AON_CTRL_REG, #AON_CTRL_PM_CTRL] + str r0, [AON_CTRL_REG, #AON_CTRL_PM_CTRL] + ldr r0, [AON_CTRL_REG, #AON_CTRL_PM_CTRL] + + /* Wait for interrupt */ + wfi + nop + + /* Bring MEMC back up */ +1: ldr r0, [DDR_PHY_STATUS_REG] + ands r0, #1 + beq 1b + + /* Power-up handshake */ + ldr r0, =1 + str r0, [AON_CTRL_REG, #AON_CTRL_HOST_MISC_CMDS] + ldr r0, [AON_CTRL_REG, #AON_CTRL_HOST_MISC_CMDS] + + ldr r0, =0 + str r0, [AON_CTRL_REG, #AON_CTRL_PM_CTRL] + ldr r0, [AON_CTRL_REG, #AON_CTRL_PM_CTRL] + + /* Return to caller */ + ldr r0, =0 + ldmfd sp!, {r4-r11, pc} + + ENDPROC(brcmstb_pm_do_s2) + + /* Place literal pool here */ + .ltorg + +ENTRY(brcmstb_pm_do_s2_sz) + .word . - brcmstb_pm_do_s2 diff --git a/drivers/soc/bcm/brcmstb/pm/s2-mips.S b/drivers/soc/bcm/brcmstb/pm/s2-mips.S new file mode 100644 index 000000000000..27a14bc46043 --- /dev/null +++ b/drivers/soc/bcm/brcmstb/pm/s2-mips.S @@ -0,0 +1,200 @@ +/* + * Copyright (C) 2016 Broadcom Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <asm/asm.h> +#include <asm/regdef.h> +#include <asm/mipsregs.h> +#include <asm/stackframe.h> + +#include "pm.h" + + .text + .set noreorder + .align 5 + +/* + * a0: u32 params array + */ +LEAF(brcm_pm_do_s2) + + subu sp, 64 + sw ra, 0(sp) + sw s0, 4(sp) + sw s1, 8(sp) + sw s2, 12(sp) + sw s3, 16(sp) + sw s4, 20(sp) + sw s5, 24(sp) + sw s6, 28(sp) + sw s7, 32(sp) + + /* + * Dereference the params array + * s0: AON_CTRL base register + * s1: DDR_PHY base register + * s2: TIMERS base register + * s3: I-Cache line size + * s4: Restart vector address + * s5: Restart vector size + */ + move t0, a0 + + lw s0, 0(t0) + lw s1, 4(t0) + lw s2, 8(t0) + lw s3, 12(t0) + lw s4, 16(t0) + lw s5, 20(t0) + + /* Lock this asm section into the I-cache */ + addiu t1, s3, -1 + not t1 + + la t0, brcm_pm_do_s2 + and t0, t1 + + la t2, asm_end + and t2, t1 + +1: cache 0x1c, 0(t0) + bne t0, t2, 1b + addu t0, s3 + + /* Lock the interrupt vector into the I-cache */ + move t0, zero + +2: move t1, s4 + cache 0x1c, 0(t1) + addu t1, s3 + addu t0, s3 + ble t0, s5, 2b + nop + + sync + + /* Power down request */ + li t0, PM_S2_COMMAND + sw zero, AON_CTRL_PM_CTRL(s0) + lw zero, AON_CTRL_PM_CTRL(s0) + sw t0, AON_CTRL_PM_CTRL(s0) + lw t0, AON_CTRL_PM_CTRL(s0) + + /* Enable CP0 interrupt 2 and wait for interrupt */ + mfc0 t0, CP0_STATUS + /* Save cp0 sr for restoring later */ + move s6, t0 + + li t1, ~(ST0_IM | ST0_IE) + and t0, t1 + ori t0, STATUSF_IP2 + mtc0 t0, CP0_STATUS + nop + nop + nop + ori t0, ST0_IE + mtc0 t0, CP0_STATUS + + /* Wait for interrupt */ + wait + nop + + /* Wait for memc0 */ +1: lw t0, DDR40_PHY_CONTROL_REGS_0_PLL_STATUS(s1) + andi t0, 1 + beqz t0, 1b + nop + + /* 1ms delay needed for stable recovery */ + /* Use TIMER1 to count 1 ms */ + li t0, RESET_TIMER + sw t0, TIMER_TIMER1_CTRL(s2) + lw t0, TIMER_TIMER1_CTRL(s2) + + li t0, START_TIMER + sw t0, TIMER_TIMER1_CTRL(s2) + lw t0, TIMER_TIMER1_CTRL(s2) + + /* Prepare delay */ + li t0, TIMER_MASK + lw t1, TIMER_TIMER1_STAT(s2) + and t1, t0 + /* 1ms delay */ + addi t1, 27000 + + /* Wait for the timer value to exceed t1 */ +1: lw t0, TIMER_TIMER1_STAT(s2) + sgtu t2, t1, t0 + bnez t2, 1b + nop + + /* Power back up */ + li t1, 1 + sw t1, AON_CTRL_HOST_MISC_CMDS(s0) + lw t1, AON_CTRL_HOST_MISC_CMDS(s0) + + sw zero, AON_CTRL_PM_CTRL(s0) + lw zero, AON_CTRL_PM_CTRL(s0) + + /* Unlock I-cache */ + addiu t1, s3, -1 + not t1 + + la t0, brcm_pm_do_s2 + and t0, t1 + + la t2, asm_end + and t2, t1 + +1: cache 0x00, 0(t0) + bne t0, t2, 1b + addu t0, s3 + + /* Unlock interrupt vector */ + move t0, zero + +2: move t1, s4 + cache 0x00, 0(t1) + addu t1, s3 + addu t0, s3 + ble t0, s5, 2b + nop + + /* Restore cp0 sr */ + sync + nop + mtc0 s6, CP0_STATUS + nop + + /* Set return value to success */ + li v0, 0 + + /* Return to caller */ + lw s7, 32(sp) + lw s6, 28(sp) + lw s5, 24(sp) + lw s4, 20(sp) + lw s3, 16(sp) + lw s2, 12(sp) + lw s1, 8(sp) + lw s0, 4(sp) + lw ra, 0(sp) + addiu sp, 64 + + jr ra + nop +END(brcm_pm_do_s2) + + .globl asm_end +asm_end: + nop + diff --git a/drivers/soc/bcm/brcmstb/pm/s3-mips.S b/drivers/soc/bcm/brcmstb/pm/s3-mips.S new file mode 100644 index 000000000000..1242308a8868 --- /dev/null +++ b/drivers/soc/bcm/brcmstb/pm/s3-mips.S @@ -0,0 +1,146 @@ +/* + * Copyright (C) 2016 Broadcom Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <asm/asm.h> +#include <asm/regdef.h> +#include <asm/mipsregs.h> +#include <asm/bmips.h> + +#include "pm.h" + + .text + .set noreorder + .align 5 + .global s3_reentry + +/* + * a0: AON_CTRL base register + * a1: D-Cache line size + */ +LEAF(brcm_pm_do_s3) + + /* Get the address of s3_context */ + la t0, gp_regs + sw ra, 0(t0) + sw s0, 4(t0) + sw s1, 8(t0) + sw s2, 12(t0) + sw s3, 16(t0) + sw s4, 20(t0) + sw s5, 24(t0) + sw s6, 28(t0) + sw s7, 32(t0) + sw gp, 36(t0) + sw sp, 40(t0) + sw fp, 44(t0) + + /* Save CP0 Status */ + mfc0 t1, CP0_STATUS + sw t1, 48(t0) + + /* Write-back gp registers - cache will be gone */ + addiu t1, a1, -1 + not t1 + and t0, t1 + + /* Flush at least 64 bytes */ + addiu t2, t0, 64 + and t2, t1 + +1: cache 0x17, 0(t0) + bne t0, t2, 1b + addu t0, a1 + + /* Drop to deep standby */ + li t1, PM_WARM_CONFIG + sw zero, AON_CTRL_PM_CTRL(a0) + lw zero, AON_CTRL_PM_CTRL(a0) + sw t1, AON_CTRL_PM_CTRL(a0) + lw t1, AON_CTRL_PM_CTRL(a0) + + li t1, (PM_WARM_CONFIG | PM_PWR_DOWN) + sw t1, AON_CTRL_PM_CTRL(a0) + lw t1, AON_CTRL_PM_CTRL(a0) + + /* Enable CP0 interrupt 2 and wait for interrupt */ + mfc0 t0, CP0_STATUS + + li t1, ~(ST0_IM | ST0_IE) + and t0, t1 + ori t0, STATUSF_IP2 + mtc0 t0, CP0_STATUS + nop + nop + nop + ori t0, ST0_IE + mtc0 t0, CP0_STATUS + + /* Wait for interrupt */ + wait + nop + +s3_reentry: + + /* Clear call/return stack */ + li t0, (0x06 << 16) + mtc0 t0, $22, 2 + ssnop + ssnop + ssnop + + /* Clear jump target buffer */ + li t0, (0x04 << 16) + mtc0 t0, $22, 2 + ssnop + ssnop + ssnop + + sync + nop + + /* Setup mmu defaults */ + mtc0 zero, CP0_WIRED + mtc0 zero, CP0_ENTRYHI + li k0, PM_DEFAULT_MASK + mtc0 k0, CP0_PAGEMASK + + li sp, BMIPS_WARM_RESTART_VEC + la k0, plat_wired_tlb_setup + jalr k0 + nop + + /* Restore general purpose registers */ + la t0, gp_regs + lw fp, 44(t0) + lw sp, 40(t0) + lw gp, 36(t0) + lw s7, 32(t0) + lw s6, 28(t0) + lw s5, 24(t0) + lw s4, 20(t0) + lw s3, 16(t0) + lw s2, 12(t0) + lw s1, 8(t0) + lw s0, 4(t0) + lw ra, 0(t0) + + /* Restore CP0 status */ + lw t1, 48(t0) + mtc0 t1, CP0_STATUS + + /* Return to caller */ + li v0, 0 + jr ra + nop + +END(brcm_pm_do_s3) diff --git a/drivers/soc/fsl/guts.c b/drivers/soc/fsl/guts.c index 6af7a11f09a5..d89a6a80c8ef 100644 --- a/drivers/soc/fsl/guts.c +++ b/drivers/soc/fsl/guts.c @@ -213,6 +213,7 @@ static const struct of_device_id fsl_guts_of_match[] = { { .compatible = "fsl,ls1021a-dcfg", }, { .compatible = "fsl,ls1043a-dcfg", }, { .compatible = "fsl,ls2080a-dcfg", }, + { .compatible = "fsl,ls1088a-dcfg", }, {} }; MODULE_DEVICE_TABLE(of, fsl_guts_of_match); diff --git a/drivers/soc/fsl/qbman/Kconfig b/drivers/soc/fsl/qbman/Kconfig index 757033c0586c..fb4e6bf0a0c4 100644 --- a/drivers/soc/fsl/qbman/Kconfig +++ b/drivers/soc/fsl/qbman/Kconfig @@ -1,6 +1,6 @@ menuconfig FSL_DPAA bool "Freescale DPAA 1.x support" - depends on FSL_SOC_BOOKE + depends on (FSL_SOC_BOOKE || ARCH_LAYERSCAPE) select GENERIC_ALLOCATOR help The Freescale Data Path Acceleration Architecture (DPAA) is a set of diff --git a/drivers/soc/fsl/qbman/Makefile b/drivers/soc/fsl/qbman/Makefile index 363982b83ab5..811312ad526f 100644 --- a/drivers/soc/fsl/qbman/Makefile +++ b/drivers/soc/fsl/qbman/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_FSL_DPAA) += bman_ccsr.o qman_ccsr.o \ bman_portal.o qman_portal.o \ - bman.o qman.o + bman.o qman.o dpaa_sys.o obj-$(CONFIG_FSL_BMAN_TEST) += bman-test.o bman-test-y = bman_test.o diff --git a/drivers/soc/fsl/qbman/bman.c b/drivers/soc/fsl/qbman/bman.c index a3d6d7cfa929..f9485cedc648 100644 --- a/drivers/soc/fsl/qbman/bman.c +++ b/drivers/soc/fsl/qbman/bman.c @@ -35,6 +35,27 @@ /* Portal register assists */ +#if defined(CONFIG_ARM) || defined(CONFIG_ARM64) +/* Cache-inhibited register offsets */ +#define BM_REG_RCR_PI_CINH 0x3000 +#define BM_REG_RCR_CI_CINH 0x3100 +#define BM_REG_RCR_ITR 0x3200 +#define BM_REG_CFG 0x3300 +#define BM_REG_SCN(n) (0x3400 + ((n) << 6)) +#define BM_REG_ISR 0x3e00 +#define BM_REG_IER 0x3e40 +#define BM_REG_ISDR 0x3e80 +#define BM_REG_IIR 0x3ec0 + +/* Cache-enabled register offsets */ +#define BM_CL_CR 0x0000 +#define BM_CL_RR0 0x0100 +#define BM_CL_RR1 0x0140 +#define BM_CL_RCR 0x1000 +#define BM_CL_RCR_PI_CENA 0x3000 +#define BM_CL_RCR_CI_CENA 0x3100 + +#else /* Cache-inhibited register offsets */ #define BM_REG_RCR_PI_CINH 0x0000 #define BM_REG_RCR_CI_CINH 0x0004 @@ -53,6 +74,7 @@ #define BM_CL_RCR 0x1000 #define BM_CL_RCR_PI_CENA 0x3000 #define BM_CL_RCR_CI_CENA 0x3100 +#endif /* * Portal modes. @@ -154,7 +176,8 @@ struct bm_mc { }; struct bm_addr { - void __iomem *ce; /* cache-enabled */ + void *ce; /* cache-enabled */ + __be32 *ce_be; /* Same as above but for direct access */ void __iomem *ci; /* cache-inhibited */ }; @@ -167,12 +190,12 @@ struct bm_portal { /* Cache-inhibited register access. */ static inline u32 bm_in(struct bm_portal *p, u32 offset) { - return be32_to_cpu(__raw_readl(p->addr.ci + offset)); + return ioread32be(p->addr.ci + offset); } static inline void bm_out(struct bm_portal *p, u32 offset, u32 val) { - __raw_writel(cpu_to_be32(val), p->addr.ci + offset); + iowrite32be(val, p->addr.ci + offset); } /* Cache Enabled Portal Access */ @@ -188,7 +211,7 @@ static inline void bm_cl_touch_ro(struct bm_portal *p, u32 offset) static inline u32 bm_ce_in(struct bm_portal *p, u32 offset) { - return be32_to_cpu(__raw_readl(p->addr.ce + offset)); + return be32_to_cpu(*(p->addr.ce_be + (offset/4))); } struct bman_portal { @@ -408,7 +431,7 @@ static int bm_mc_init(struct bm_portal *portal) mc->cr = portal->addr.ce + BM_CL_CR; mc->rr = portal->addr.ce + BM_CL_RR0; - mc->rridx = (__raw_readb(&mc->cr->_ncw_verb) & BM_MCC_VERB_VBIT) ? + mc->rridx = (mc->cr->_ncw_verb & BM_MCC_VERB_VBIT) ? 0 : 1; mc->vbit = mc->rridx ? BM_MCC_VERB_VBIT : 0; #ifdef CONFIG_FSL_DPAA_CHECKING @@ -466,7 +489,7 @@ static inline union bm_mc_result *bm_mc_result(struct bm_portal *portal) * its command is submitted and completed. This includes the valid-bit, * in case you were wondering... */ - if (!__raw_readb(&rr->verb)) { + if (!rr->verb) { dpaa_invalidate_touch_ro(rr); return NULL; } @@ -512,8 +535,9 @@ static int bman_create_portal(struct bman_portal *portal, * config, everything that follows depends on it and "config" is more * for (de)reference... */ - p->addr.ce = c->addr_virt[DPAA_PORTAL_CE]; - p->addr.ci = c->addr_virt[DPAA_PORTAL_CI]; + p->addr.ce = c->addr_virt_ce; + p->addr.ce_be = c->addr_virt_ce; + p->addr.ci = c->addr_virt_ci; if (bm_rcr_init(p, bm_rcr_pvb, bm_rcr_cce)) { dev_err(c->dev, "RCR initialisation failed\n"); goto fail_rcr; @@ -607,7 +631,7 @@ int bman_p_irqsource_add(struct bman_portal *p, u32 bits) unsigned long irqflags; local_irq_save(irqflags); - set_bits(bits & BM_PIRQ_VISIBLE, &p->irq_sources); + p->irq_sources |= bits & BM_PIRQ_VISIBLE; bm_out(&p->p, BM_REG_IER, p->irq_sources); local_irq_restore(irqflags); return 0; diff --git a/drivers/soc/fsl/qbman/bman_ccsr.c b/drivers/soc/fsl/qbman/bman_ccsr.c index eaa9585c7347..05c42235dd41 100644 --- a/drivers/soc/fsl/qbman/bman_ccsr.c +++ b/drivers/soc/fsl/qbman/bman_ccsr.c @@ -201,6 +201,21 @@ static int fsl_bman_probe(struct platform_device *pdev) return -ENODEV; } + /* + * If FBPR memory wasn't defined using the qbman compatible string + * try using the of_reserved_mem_device method + */ + if (!fbpr_a) { + ret = qbman_init_private_mem(dev, 0, &fbpr_a, &fbpr_sz); + if (ret) { + dev_err(dev, "qbman_init_private_mem() failed 0x%x\n", + ret); + return -ENODEV; + } + } + + dev_dbg(dev, "Allocated FBPR 0x%llx 0x%zx\n", fbpr_a, fbpr_sz); + bm_set_memory(fbpr_a, fbpr_sz); err_irq = platform_get_irq(pdev, 0); diff --git a/drivers/soc/fsl/qbman/bman_portal.c b/drivers/soc/fsl/qbman/bman_portal.c index 39b39c8f1399..2f71f7df3465 100644 --- a/drivers/soc/fsl/qbman/bman_portal.c +++ b/drivers/soc/fsl/qbman/bman_portal.c @@ -91,7 +91,6 @@ static int bman_portal_probe(struct platform_device *pdev) struct device_node *node = dev->of_node; struct bm_portal_config *pcfg; struct resource *addr_phys[2]; - void __iomem *va; int irq, cpu; pcfg = devm_kmalloc(dev, sizeof(*pcfg), GFP_KERNEL); @@ -123,23 +122,21 @@ static int bman_portal_probe(struct platform_device *pdev) } pcfg->irq = irq; - va = ioremap_prot(addr_phys[0]->start, resource_size(addr_phys[0]), 0); - if (!va) { - dev_err(dev, "ioremap::CE failed\n"); + pcfg->addr_virt_ce = memremap(addr_phys[0]->start, + resource_size(addr_phys[0]), + QBMAN_MEMREMAP_ATTR); + if (!pcfg->addr_virt_ce) { + dev_err(dev, "memremap::CE failed\n"); goto err_ioremap1; } - pcfg->addr_virt[DPAA_PORTAL_CE] = va; - - va = ioremap_prot(addr_phys[1]->start, resource_size(addr_phys[1]), - _PAGE_GUARDED | _PAGE_NO_CACHE); - if (!va) { + pcfg->addr_virt_ci = ioremap(addr_phys[1]->start, + resource_size(addr_phys[1])); + if (!pcfg->addr_virt_ci) { dev_err(dev, "ioremap::CI failed\n"); goto err_ioremap2; } - pcfg->addr_virt[DPAA_PORTAL_CI] = va; - spin_lock(&bman_lock); cpu = cpumask_next_zero(-1, &portal_cpus); if (cpu >= nr_cpu_ids) { @@ -164,9 +161,9 @@ static int bman_portal_probe(struct platform_device *pdev) return 0; err_portal_init: - iounmap(pcfg->addr_virt[DPAA_PORTAL_CI]); + iounmap(pcfg->addr_virt_ci); err_ioremap2: - iounmap(pcfg->addr_virt[DPAA_PORTAL_CE]); + memunmap(pcfg->addr_virt_ce); err_ioremap1: return -ENXIO; } diff --git a/drivers/soc/fsl/qbman/bman_priv.h b/drivers/soc/fsl/qbman/bman_priv.h index f6896a2f6d90..751ce90383b7 100644 --- a/drivers/soc/fsl/qbman/bman_priv.h +++ b/drivers/soc/fsl/qbman/bman_priv.h @@ -46,11 +46,9 @@ extern u16 bman_ip_rev; /* 0 if uninitialised, otherwise BMAN_REVx */ extern struct gen_pool *bm_bpalloc; struct bm_portal_config { - /* - * Corenet portal addresses; - * [0]==cache-enabled, [1]==cache-inhibited. - */ - void __iomem *addr_virt[2]; + /* Portal addresses */ + void *addr_virt_ce; + void __iomem *addr_virt_ci; /* Allow these to be joined in lists */ struct list_head list; struct device *dev; diff --git a/drivers/soc/fsl/qbman/dpaa_sys.c b/drivers/soc/fsl/qbman/dpaa_sys.c new file mode 100644 index 000000000000..9436aa83ff1b --- /dev/null +++ b/drivers/soc/fsl/qbman/dpaa_sys.c @@ -0,0 +1,78 @@ +/* Copyright 2017 NXP Semiconductor, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of NXP Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY NXP Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NXP Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <linux/dma-mapping.h> +#include "dpaa_sys.h" + +/* + * Initialize a devices private memory region + */ +int qbman_init_private_mem(struct device *dev, int idx, dma_addr_t *addr, + size_t *size) +{ + int ret; + struct device_node *mem_node; + u64 size64; + + ret = of_reserved_mem_device_init_by_idx(dev, dev->of_node, idx); + if (ret) { + dev_err(dev, + "of_reserved_mem_device_init_by_idx(%d) failed 0x%x\n", + idx, ret); + return -ENODEV; + } + mem_node = of_parse_phandle(dev->of_node, "memory-region", 0); + if (mem_node) { + ret = of_property_read_u64(mem_node, "size", &size64); + if (ret) { + dev_err(dev, "of_address_to_resource fails 0x%x\n", + ret); + return -ENODEV; + } + *size = size64; + } else { + dev_err(dev, "No memory-region found for index %d\n", idx); + return -ENODEV; + } + + if (!dma_zalloc_coherent(dev, *size, addr, 0)) { + dev_err(dev, "DMA Alloc memory failed\n"); + return -ENODEV; + } + + /* + * Disassociate the reserved memory area from the device + * because a device can only have one DMA memory area. This + * should be fine since the memory is allocated and initialized + * and only ever accessed by the QBMan device from now on + */ + of_reserved_mem_device_release(dev); + return 0; +} diff --git a/drivers/soc/fsl/qbman/dpaa_sys.h b/drivers/soc/fsl/qbman/dpaa_sys.h index 2ce394aa4c95..9f379000da85 100644 --- a/drivers/soc/fsl/qbman/dpaa_sys.h +++ b/drivers/soc/fsl/qbman/dpaa_sys.h @@ -44,23 +44,21 @@ #include <linux/prefetch.h> #include <linux/genalloc.h> #include <asm/cacheflush.h> +#include <linux/io.h> +#include <linux/delay.h> /* For 2-element tables related to cache-inhibited and cache-enabled mappings */ #define DPAA_PORTAL_CE 0 #define DPAA_PORTAL_CI 1 -#if (L1_CACHE_BYTES != 32) && (L1_CACHE_BYTES != 64) -#error "Unsupported Cacheline Size" -#endif - static inline void dpaa_flush(void *p) { + /* + * Only PPC needs to flush the cache currently - on ARM the mapping + * is non cacheable + */ #ifdef CONFIG_PPC flush_dcache_range((unsigned long)p, (unsigned long)p+64); -#elif defined(CONFIG_ARM32) - __cpuc_flush_dcache_area(p, 64); -#elif defined(CONFIG_ARM64) - __flush_dcache_area(p, 64); #endif } @@ -102,4 +100,15 @@ static inline u8 dpaa_cyc_diff(u8 ringsize, u8 first, u8 last) /* Offset applied to genalloc pools due to zero being an error return */ #define DPAA_GENALLOC_OFF 0x80000000 +/* Initialize the devices private memory region */ +int qbman_init_private_mem(struct device *dev, int idx, dma_addr_t *addr, + size_t *size); + +/* memremap() attributes for different platforms */ +#ifdef CONFIG_PPC +#define QBMAN_MEMREMAP_ATTR MEMREMAP_WB +#else +#define QBMAN_MEMREMAP_ATTR MEMREMAP_WC +#endif + #endif /* __DPAA_SYS_H */ diff --git a/drivers/soc/fsl/qbman/qman.c b/drivers/soc/fsl/qbman/qman.c index 18eefc3f1abe..e4f5bb056fd2 100644 --- a/drivers/soc/fsl/qbman/qman.c +++ b/drivers/soc/fsl/qbman/qman.c @@ -41,6 +41,43 @@ /* Portal register assists */ +#if defined(CONFIG_ARM) || defined(CONFIG_ARM64) +/* Cache-inhibited register offsets */ +#define QM_REG_EQCR_PI_CINH 0x3000 +#define QM_REG_EQCR_CI_CINH 0x3040 +#define QM_REG_EQCR_ITR 0x3080 +#define QM_REG_DQRR_PI_CINH 0x3100 +#define QM_REG_DQRR_CI_CINH 0x3140 +#define QM_REG_DQRR_ITR 0x3180 +#define QM_REG_DQRR_DCAP 0x31C0 +#define QM_REG_DQRR_SDQCR 0x3200 +#define QM_REG_DQRR_VDQCR 0x3240 +#define QM_REG_DQRR_PDQCR 0x3280 +#define QM_REG_MR_PI_CINH 0x3300 +#define QM_REG_MR_CI_CINH 0x3340 +#define QM_REG_MR_ITR 0x3380 +#define QM_REG_CFG 0x3500 +#define QM_REG_ISR 0x3600 +#define QM_REG_IER 0x3640 +#define QM_REG_ISDR 0x3680 +#define QM_REG_IIR 0x36C0 +#define QM_REG_ITPR 0x3740 + +/* Cache-enabled register offsets */ +#define QM_CL_EQCR 0x0000 +#define QM_CL_DQRR 0x1000 +#define QM_CL_MR 0x2000 +#define QM_CL_EQCR_PI_CENA 0x3000 +#define QM_CL_EQCR_CI_CENA 0x3040 +#define QM_CL_DQRR_PI_CENA 0x3100 +#define QM_CL_DQRR_CI_CENA 0x3140 +#define QM_CL_MR_PI_CENA 0x3300 +#define QM_CL_MR_CI_CENA 0x3340 +#define QM_CL_CR 0x3800 +#define QM_CL_RR0 0x3900 +#define QM_CL_RR1 0x3940 + +#else /* Cache-inhibited register offsets */ #define QM_REG_EQCR_PI_CINH 0x0000 #define QM_REG_EQCR_CI_CINH 0x0004 @@ -75,6 +112,7 @@ #define QM_CL_CR 0x3800 #define QM_CL_RR0 0x3900 #define QM_CL_RR1 0x3940 +#endif /* * BTW, the drivers (and h/w programming model) already obtain the required @@ -300,7 +338,8 @@ struct qm_mc { }; struct qm_addr { - void __iomem *ce; /* cache-enabled */ + void *ce; /* cache-enabled */ + __be32 *ce_be; /* same value as above but for direct access */ void __iomem *ci; /* cache-inhibited */ }; @@ -321,12 +360,12 @@ struct qm_portal { /* Cache-inhibited register access. */ static inline u32 qm_in(struct qm_portal *p, u32 offset) { - return be32_to_cpu(__raw_readl(p->addr.ci + offset)); + return ioread32be(p->addr.ci + offset); } static inline void qm_out(struct qm_portal *p, u32 offset, u32 val) { - __raw_writel(cpu_to_be32(val), p->addr.ci + offset); + iowrite32be(val, p->addr.ci + offset); } /* Cache Enabled Portal Access */ @@ -342,7 +381,7 @@ static inline void qm_cl_touch_ro(struct qm_portal *p, u32 offset) static inline u32 qm_ce_in(struct qm_portal *p, u32 offset) { - return be32_to_cpu(__raw_readl(p->addr.ce + offset)); + return be32_to_cpu(*(p->addr.ce_be + (offset/4))); } /* --- EQCR API --- */ @@ -646,11 +685,7 @@ static inline void qm_dqrr_pvb_update(struct qm_portal *portal) */ dpaa_invalidate_touch_ro(res); #endif - /* - * when accessing 'verb', use __raw_readb() to ensure that compiler - * inlining doesn't try to optimise out "excess reads". - */ - if ((__raw_readb(&res->verb) & QM_DQRR_VERB_VBIT) == dqrr->vbit) { + if ((res->verb & QM_DQRR_VERB_VBIT) == dqrr->vbit) { dqrr->pi = (dqrr->pi + 1) & (QM_DQRR_SIZE - 1); if (!dqrr->pi) dqrr->vbit ^= QM_DQRR_VERB_VBIT; @@ -777,11 +812,8 @@ static inline void qm_mr_pvb_update(struct qm_portal *portal) union qm_mr_entry *res = qm_cl(mr->ring, mr->pi); DPAA_ASSERT(mr->pmode == qm_mr_pvb); - /* - * when accessing 'verb', use __raw_readb() to ensure that compiler - * inlining doesn't try to optimise out "excess reads". - */ - if ((__raw_readb(&res->verb) & QM_MR_VERB_VBIT) == mr->vbit) { + + if ((res->verb & QM_MR_VERB_VBIT) == mr->vbit) { mr->pi = (mr->pi + 1) & (QM_MR_SIZE - 1); if (!mr->pi) mr->vbit ^= QM_MR_VERB_VBIT; @@ -822,7 +854,7 @@ static inline int qm_mc_init(struct qm_portal *portal) mc->cr = portal->addr.ce + QM_CL_CR; mc->rr = portal->addr.ce + QM_CL_RR0; - mc->rridx = (__raw_readb(&mc->cr->_ncw_verb) & QM_MCC_VERB_VBIT) + mc->rridx = (mc->cr->_ncw_verb & QM_MCC_VERB_VBIT) ? 0 : 1; mc->vbit = mc->rridx ? QM_MCC_VERB_VBIT : 0; #ifdef CONFIG_FSL_DPAA_CHECKING @@ -880,7 +912,7 @@ static inline union qm_mc_result *qm_mc_result(struct qm_portal *portal) * its command is submitted and completed. This includes the valid-bit, * in case you were wondering... */ - if (!__raw_readb(&rr->verb)) { + if (!rr->verb) { dpaa_invalidate_touch_ro(rr); return NULL; } @@ -909,12 +941,12 @@ static inline int qm_mc_result_timeout(struct qm_portal *portal, static inline void fq_set(struct qman_fq *fq, u32 mask) { - set_bits(mask, &fq->flags); + fq->flags |= mask; } static inline void fq_clear(struct qman_fq *fq, u32 mask) { - clear_bits(mask, &fq->flags); + fq->flags &= ~mask; } static inline int fq_isset(struct qman_fq *fq, u32 mask) @@ -1084,11 +1116,7 @@ loop: * entries well before the ring has been fully consumed, so * we're being *really* paranoid here. */ - u64 now, then = jiffies; - - do { - now = jiffies; - } while ((then + 10000) > now); + msleep(1); msg = qm_mr_current(p); if (!msg) return 0; @@ -1124,8 +1152,9 @@ static int qman_create_portal(struct qman_portal *portal, * config, everything that follows depends on it and "config" is more * for (de)reference */ - p->addr.ce = c->addr_virt[DPAA_PORTAL_CE]; - p->addr.ci = c->addr_virt[DPAA_PORTAL_CI]; + p->addr.ce = c->addr_virt_ce; + p->addr.ce_be = c->addr_virt_ce; + p->addr.ci = c->addr_virt_ci; /* * If CI-stashing is used, the current defaults use a threshold of 3, * and stash with high-than-DQRR priority. @@ -1566,7 +1595,7 @@ void qman_p_irqsource_add(struct qman_portal *p, u32 bits) unsigned long irqflags; local_irq_save(irqflags); - set_bits(bits & QM_PIRQ_VISIBLE, &p->irq_sources); + p->irq_sources |= bits & QM_PIRQ_VISIBLE; qm_out(&p->p, QM_REG_IER, p->irq_sources); local_irq_restore(irqflags); } @@ -1589,7 +1618,7 @@ void qman_p_irqsource_remove(struct qman_portal *p, u32 bits) */ local_irq_save(irqflags); bits &= QM_PIRQ_VISIBLE; - clear_bits(bits, &p->irq_sources); + p->irq_sources &= ~bits; qm_out(&p->p, QM_REG_IER, p->irq_sources); ier = qm_in(&p->p, QM_REG_IER); /* diff --git a/drivers/soc/fsl/qbman/qman_ccsr.c b/drivers/soc/fsl/qbman/qman_ccsr.c index 835ce947ffca..79cba58387a5 100644 --- a/drivers/soc/fsl/qbman/qman_ccsr.c +++ b/drivers/soc/fsl/qbman/qman_ccsr.c @@ -401,21 +401,42 @@ static int qm_init_pfdr(struct device *dev, u32 pfdr_start, u32 num) } /* - * Ideally we would use the DMA API to turn rmem->base into a DMA address - * (especially if iommu translations ever get involved). Unfortunately, the - * DMA API currently does not allow mapping anything that is not backed with - * a struct page. + * QMan needs two global memory areas initialized at boot time: + * 1) FQD: Frame Queue Descriptors used to manage frame queues + * 2) PFDR: Packed Frame Queue Descriptor Records used to store frames + * Both areas are reserved using the device tree reserved memory framework + * and the addresses and sizes are initialized when the QMan device is probed */ static dma_addr_t fqd_a, pfdr_a; static size_t fqd_sz, pfdr_sz; +#ifdef CONFIG_PPC +/* + * Support for PPC Device Tree backward compatibility when compatible + * string is set to fsl-qman-fqd and fsl-qman-pfdr + */ +static int zero_priv_mem(phys_addr_t addr, size_t sz) +{ + /* map as cacheable, non-guarded */ + void __iomem *tmpp = ioremap_prot(addr, sz, 0); + + if (!tmpp) + return -ENOMEM; + + memset_io(tmpp, 0, sz); + flush_dcache_range((unsigned long)tmpp, + (unsigned long)tmpp + sz); + iounmap(tmpp); + + return 0; +} + static int qman_fqd(struct reserved_mem *rmem) { fqd_a = rmem->base; fqd_sz = rmem->size; WARN_ON(!(fqd_a && fqd_sz)); - return 0; } RESERVEDMEM_OF_DECLARE(qman_fqd, "fsl,qman-fqd", qman_fqd); @@ -431,32 +452,13 @@ static int qman_pfdr(struct reserved_mem *rmem) } RESERVEDMEM_OF_DECLARE(qman_pfdr, "fsl,qman-pfdr", qman_pfdr); +#endif + static unsigned int qm_get_fqid_maxcnt(void) { return fqd_sz / 64; } -/* - * Flush this memory range from data cache so that QMAN originated - * transactions for this memory region could be marked non-coherent. - */ -static int zero_priv_mem(struct device *dev, struct device_node *node, - phys_addr_t addr, size_t sz) -{ - /* map as cacheable, non-guarded */ - void __iomem *tmpp = ioremap_prot(addr, sz, 0); - - if (!tmpp) - return -ENOMEM; - - memset_io(tmpp, 0, sz); - flush_dcache_range((unsigned long)tmpp, - (unsigned long)tmpp + sz); - iounmap(tmpp); - - return 0; -} - static void log_edata_bits(struct device *dev, u32 bit_count) { u32 i, j, mask = 0xffffffff; @@ -717,6 +719,8 @@ static int fsl_qman_probe(struct platform_device *pdev) qman_ip_rev = QMAN_REV30; else if (major == 3 && minor == 1) qman_ip_rev = QMAN_REV31; + else if (major == 3 && minor == 2) + qman_ip_rev = QMAN_REV32; else { dev_err(dev, "Unknown QMan version\n"); return -ENODEV; @@ -727,10 +731,41 @@ static int fsl_qman_probe(struct platform_device *pdev) qm_channel_caam = QMAN_CHANNEL_CAAM_REV3; } - ret = zero_priv_mem(dev, node, fqd_a, fqd_sz); - WARN_ON(ret); - if (ret) - return -ENODEV; + if (fqd_a) { +#ifdef CONFIG_PPC + /* + * For PPC backward DT compatibility + * FQD memory MUST be zero'd by software + */ + zero_priv_mem(fqd_a, fqd_sz); +#else + WARN(1, "Unexpected architecture using non shared-dma-mem reservations"); +#endif + } else { + /* + * Order of memory regions is assumed as FQD followed by PFDR + * in order to ensure allocations from the correct regions the + * driver initializes then allocates each piece in order + */ + ret = qbman_init_private_mem(dev, 0, &fqd_a, &fqd_sz); + if (ret) { + dev_err(dev, "qbman_init_private_mem() for FQD failed 0x%x\n", + ret); + return -ENODEV; + } + } + dev_dbg(dev, "Allocated FQD 0x%llx 0x%zx\n", fqd_a, fqd_sz); + + if (!pfdr_a) { + /* Setup PFDR memory */ + ret = qbman_init_private_mem(dev, 1, &pfdr_a, &pfdr_sz); + if (ret) { + dev_err(dev, "qbman_init_private_mem() for PFDR failed 0x%x\n", + ret); + return -ENODEV; + } + } + dev_dbg(dev, "Allocated PFDR 0x%llx 0x%zx\n", pfdr_a, pfdr_sz); ret = qman_init_ccsr(dev); if (ret) { diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c index cbacdf4f98ed..a120002b630e 100644 --- a/drivers/soc/fsl/qbman/qman_portal.c +++ b/drivers/soc/fsl/qbman/qman_portal.c @@ -224,7 +224,6 @@ static int qman_portal_probe(struct platform_device *pdev) struct device_node *node = dev->of_node; struct qm_portal_config *pcfg; struct resource *addr_phys[2]; - void __iomem *va; int irq, cpu, err; u32 val; @@ -262,23 +261,21 @@ static int qman_portal_probe(struct platform_device *pdev) } pcfg->irq = irq; - va = ioremap_prot(addr_phys[0]->start, resource_size(addr_phys[0]), 0); - if (!va) { - dev_err(dev, "ioremap::CE failed\n"); + pcfg->addr_virt_ce = memremap(addr_phys[0]->start, + resource_size(addr_phys[0]), + QBMAN_MEMREMAP_ATTR); + if (!pcfg->addr_virt_ce) { + dev_err(dev, "memremap::CE failed\n"); goto err_ioremap1; } - pcfg->addr_virt[DPAA_PORTAL_CE] = va; - - va = ioremap_prot(addr_phys[1]->start, resource_size(addr_phys[1]), - _PAGE_GUARDED | _PAGE_NO_CACHE); - if (!va) { + pcfg->addr_virt_ci = ioremap(addr_phys[1]->start, + resource_size(addr_phys[1])); + if (!pcfg->addr_virt_ci) { dev_err(dev, "ioremap::CI failed\n"); goto err_ioremap2; } - pcfg->addr_virt[DPAA_PORTAL_CI] = va; - pcfg->pools = qm_get_pools_sdqcr(); spin_lock(&qman_lock); @@ -310,9 +307,9 @@ static int qman_portal_probe(struct platform_device *pdev) return 0; err_portal_init: - iounmap(pcfg->addr_virt[DPAA_PORTAL_CI]); + iounmap(pcfg->addr_virt_ci); err_ioremap2: - iounmap(pcfg->addr_virt[DPAA_PORTAL_CE]); + memunmap(pcfg->addr_virt_ce); err_ioremap1: return -ENXIO; } diff --git a/drivers/soc/fsl/qbman/qman_priv.h b/drivers/soc/fsl/qbman/qman_priv.h index 5fe9faf6232e..75a8f905f8f7 100644 --- a/drivers/soc/fsl/qbman/qman_priv.h +++ b/drivers/soc/fsl/qbman/qman_priv.h @@ -28,8 +28,6 @@ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - #include "dpaa_sys.h" #include <soc/fsl/qman.h> @@ -155,11 +153,9 @@ static inline void qman_cgrs_xor(struct qman_cgrs *dest, void qman_init_cgr_all(void); struct qm_portal_config { - /* - * Corenet portal addresses; - * [0]==cache-enabled, [1]==cache-inhibited. - */ - void __iomem *addr_virt[2]; + /* Portal addresses */ + void *addr_virt_ce; + void __iomem *addr_virt_ci; struct device *dev; struct iommu_domain *iommu_domain; /* Allow these to be joined in lists */ @@ -187,6 +183,7 @@ struct qm_portal_config { #define QMAN_REV20 0x0200 #define QMAN_REV30 0x0300 #define QMAN_REV31 0x0301 +#define QMAN_REV32 0x0302 extern u16 qman_ip_rev; /* 0 if uninitialised, otherwise QMAN_REVx */ #define QM_FQID_RANGE_START 1 /* FQID 0 reserved for internal use */ diff --git a/drivers/soc/fsl/qbman/qman_test.h b/drivers/soc/fsl/qbman/qman_test.h index d5f8cb2260dc..41bdbc48cade 100644 --- a/drivers/soc/fsl/qbman/qman_test.h +++ b/drivers/soc/fsl/qbman/qman_test.h @@ -30,7 +30,5 @@ #include "qman_priv.h" -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - int qman_test_stash(void); int qman_test_api(void); diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig index 609bb3424c14..a7d0667338f2 100644 --- a/drivers/soc/mediatek/Kconfig +++ b/drivers/soc/mediatek/Kconfig @@ -1,9 +1,11 @@ # # MediaTek SoC drivers # +menu "MediaTek SoC drivers" + depends on ARCH_MEDIATEK || COMPILE_TEST + config MTK_INFRACFG bool "MediaTek INFRACFG Support" - depends on ARCH_MEDIATEK || COMPILE_TEST select REGMAP help Say yes here to add support for the MediaTek INFRACFG controller. The @@ -12,7 +14,6 @@ config MTK_INFRACFG config MTK_PMIC_WRAP tristate "MediaTek PMIC Wrapper Support" - depends on ARCH_MEDIATEK depends on RESET_CONTROLLER select REGMAP help @@ -22,7 +23,6 @@ config MTK_PMIC_WRAP config MTK_SCPSYS bool "MediaTek SCPSYS Support" - depends on ARCH_MEDIATEK || COMPILE_TEST default ARCH_MEDIATEK select REGMAP select MTK_INFRACFG @@ -30,3 +30,5 @@ config MTK_SCPSYS help Say yes here to add support for the MediaTek SCPSYS power domain driver. + +endmenu diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c index c2048382830f..e9e054a15b7d 100644 --- a/drivers/soc/mediatek/mtk-pmic-wrap.c +++ b/drivers/soc/mediatek/mtk-pmic-wrap.c @@ -70,6 +70,12 @@ PWRAP_WDT_SRC_EN_HARB_STAUPD_DLE | \ PWRAP_WDT_SRC_EN_HARB_STAUPD_ALE) +/* Group of bits used for shown slave capability */ +#define PWRAP_SLV_CAP_SPI BIT(0) +#define PWRAP_SLV_CAP_DUALIO BIT(1) +#define PWRAP_SLV_CAP_SECURITY BIT(2) +#define HAS_CAP(_c, _x) (((_c) & (_x)) == (_x)) + /* defines for slave device wrapper registers */ enum dew_regs { PWRAP_DEW_BASE, @@ -208,6 +214,36 @@ enum pwrap_regs { PWRAP_ADC_RDATA_ADDR1, PWRAP_ADC_RDATA_ADDR2, + /* MT7622 only regs */ + PWRAP_EINT_STA0_ADR, + PWRAP_EINT_STA1_ADR, + PWRAP_STA, + PWRAP_CLR, + PWRAP_DVFS_ADR8, + PWRAP_DVFS_WDATA8, + PWRAP_DVFS_ADR9, + PWRAP_DVFS_WDATA9, + PWRAP_DVFS_ADR10, + PWRAP_DVFS_WDATA10, + PWRAP_DVFS_ADR11, + PWRAP_DVFS_WDATA11, + PWRAP_DVFS_ADR12, + PWRAP_DVFS_WDATA12, + PWRAP_DVFS_ADR13, + PWRAP_DVFS_WDATA13, + PWRAP_DVFS_ADR14, + PWRAP_DVFS_WDATA14, + PWRAP_DVFS_ADR15, + PWRAP_DVFS_WDATA15, + PWRAP_EXT_CK, + PWRAP_ADC_RDATA_ADDR, + PWRAP_GPS_STA, + PWRAP_SW_RST, + PWRAP_DVFS_STEP_CTRL0, + PWRAP_DVFS_STEP_CTRL1, + PWRAP_DVFS_STEP_CTRL2, + PWRAP_SPI2_CTRL, + /* MT8135 only regs */ PWRAP_CSHEXT, PWRAP_EVENT_IN_EN, @@ -330,6 +366,118 @@ static int mt2701_regs[] = { [PWRAP_ADC_RDATA_ADDR2] = 0x154, }; +static int mt7622_regs[] = { + [PWRAP_MUX_SEL] = 0x0, + [PWRAP_WRAP_EN] = 0x4, + [PWRAP_DIO_EN] = 0x8, + [PWRAP_SIDLY] = 0xC, + [PWRAP_RDDMY] = 0x10, + [PWRAP_SI_CK_CON] = 0x14, + [PWRAP_CSHEXT_WRITE] = 0x18, + [PWRAP_CSHEXT_READ] = 0x1C, + [PWRAP_CSLEXT_START] = 0x20, + [PWRAP_CSLEXT_END] = 0x24, + [PWRAP_STAUPD_PRD] = 0x28, + [PWRAP_STAUPD_GRPEN] = 0x2C, + [PWRAP_EINT_STA0_ADR] = 0x30, + [PWRAP_EINT_STA1_ADR] = 0x34, + [PWRAP_STA] = 0x38, + [PWRAP_CLR] = 0x3C, + [PWRAP_STAUPD_MAN_TRIG] = 0x40, + [PWRAP_STAUPD_STA] = 0x44, + [PWRAP_WRAP_STA] = 0x48, + [PWRAP_HARB_INIT] = 0x4C, + [PWRAP_HARB_HPRIO] = 0x50, + [PWRAP_HIPRIO_ARB_EN] = 0x54, + [PWRAP_HARB_STA0] = 0x58, + [PWRAP_HARB_STA1] = 0x5C, + [PWRAP_MAN_EN] = 0x60, + [PWRAP_MAN_CMD] = 0x64, + [PWRAP_MAN_RDATA] = 0x68, + [PWRAP_MAN_VLDCLR] = 0x6C, + [PWRAP_WACS0_EN] = 0x70, + [PWRAP_INIT_DONE0] = 0x74, + [PWRAP_WACS0_CMD] = 0x78, + [PWRAP_WACS0_RDATA] = 0x7C, + [PWRAP_WACS0_VLDCLR] = 0x80, + [PWRAP_WACS1_EN] = 0x84, + [PWRAP_INIT_DONE1] = 0x88, + [PWRAP_WACS1_CMD] = 0x8C, + [PWRAP_WACS1_RDATA] = 0x90, + [PWRAP_WACS1_VLDCLR] = 0x94, + [PWRAP_WACS2_EN] = 0x98, + [PWRAP_INIT_DONE2] = 0x9C, + [PWRAP_WACS2_CMD] = 0xA0, + [PWRAP_WACS2_RDATA] = 0xA4, + [PWRAP_WACS2_VLDCLR] = 0xA8, + [PWRAP_INT_EN] = 0xAC, + [PWRAP_INT_FLG_RAW] = 0xB0, + [PWRAP_INT_FLG] = 0xB4, + [PWRAP_INT_CLR] = 0xB8, + [PWRAP_SIG_ADR] = 0xBC, + [PWRAP_SIG_MODE] = 0xC0, + [PWRAP_SIG_VALUE] = 0xC4, + [PWRAP_SIG_ERRVAL] = 0xC8, + [PWRAP_CRC_EN] = 0xCC, + [PWRAP_TIMER_EN] = 0xD0, + [PWRAP_TIMER_STA] = 0xD4, + [PWRAP_WDT_UNIT] = 0xD8, + [PWRAP_WDT_SRC_EN] = 0xDC, + [PWRAP_WDT_FLG] = 0xE0, + [PWRAP_DEBUG_INT_SEL] = 0xE4, + [PWRAP_DVFS_ADR0] = 0xE8, + [PWRAP_DVFS_WDATA0] = 0xEC, + [PWRAP_DVFS_ADR1] = 0xF0, + [PWRAP_DVFS_WDATA1] = 0xF4, + [PWRAP_DVFS_ADR2] = 0xF8, + [PWRAP_DVFS_WDATA2] = 0xFC, + [PWRAP_DVFS_ADR3] = 0x100, + [PWRAP_DVFS_WDATA3] = 0x104, + [PWRAP_DVFS_ADR4] = 0x108, + [PWRAP_DVFS_WDATA4] = 0x10C, + [PWRAP_DVFS_ADR5] = 0x110, + [PWRAP_DVFS_WDATA5] = 0x114, + [PWRAP_DVFS_ADR6] = 0x118, + [PWRAP_DVFS_WDATA6] = 0x11C, + [PWRAP_DVFS_ADR7] = 0x120, + [PWRAP_DVFS_WDATA7] = 0x124, + [PWRAP_DVFS_ADR8] = 0x128, + [PWRAP_DVFS_WDATA8] = 0x12C, + [PWRAP_DVFS_ADR9] = 0x130, + [PWRAP_DVFS_WDATA9] = 0x134, + [PWRAP_DVFS_ADR10] = 0x138, + [PWRAP_DVFS_WDATA10] = 0x13C, + [PWRAP_DVFS_ADR11] = 0x140, + [PWRAP_DVFS_WDATA11] = 0x144, + [PWRAP_DVFS_ADR12] = 0x148, + [PWRAP_DVFS_WDATA12] = 0x14C, + [PWRAP_DVFS_ADR13] = 0x150, + [PWRAP_DVFS_WDATA13] = 0x154, + [PWRAP_DVFS_ADR14] = 0x158, + [PWRAP_DVFS_WDATA14] = 0x15C, + [PWRAP_DVFS_ADR15] = 0x160, + [PWRAP_DVFS_WDATA15] = 0x164, + [PWRAP_SPMINF_STA] = 0x168, + [PWRAP_CIPHER_KEY_SEL] = 0x16C, + [PWRAP_CIPHER_IV_SEL] = 0x170, + [PWRAP_CIPHER_EN] = 0x174, + [PWRAP_CIPHER_RDY] = 0x178, + [PWRAP_CIPHER_MODE] = 0x17C, + [PWRAP_CIPHER_SWRST] = 0x180, + [PWRAP_DCM_EN] = 0x184, + [PWRAP_DCM_DBC_PRD] = 0x188, + [PWRAP_EXT_CK] = 0x18C, + [PWRAP_ADC_CMD_ADDR] = 0x190, + [PWRAP_PWRAP_ADC_CMD] = 0x194, + [PWRAP_ADC_RDATA_ADDR] = 0x198, + [PWRAP_GPS_STA] = 0x19C, + [PWRAP_SW_RST] = 0x1A0, + [PWRAP_DVFS_STEP_CTRL0] = 0x238, + [PWRAP_DVFS_STEP_CTRL1] = 0x23C, + [PWRAP_DVFS_STEP_CTRL2] = 0x240, + [PWRAP_SPI2_CTRL] = 0x244, +}; + static int mt8173_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, @@ -487,18 +635,31 @@ static int mt8135_regs[] = { enum pmic_type { PMIC_MT6323, + PMIC_MT6380, PMIC_MT6397, }; enum pwrap_type { PWRAP_MT2701, + PWRAP_MT7622, PWRAP_MT8135, PWRAP_MT8173, }; +struct pmic_wrapper; struct pwrap_slv_type { const u32 *dew_regs; enum pmic_type type; + const struct regmap_config *regmap; + /* Flags indicating the capability for the target slave */ + u32 caps; + /* + * pwrap operations are highly associated with the PMIC types, + * so the pointers added increases flexibility allowing determination + * which type is used by the detection through device tree. + */ + int (*pwrap_read)(struct pmic_wrapper *wrp, u32 adr, u32 *rdata); + int (*pwrap_write)(struct pmic_wrapper *wrp, u32 adr, u32 wdata); }; struct pmic_wrapper { @@ -522,7 +683,7 @@ struct pmic_wrapper_type { u32 int_en_all; u32 spi_w; u32 wdt_src; - int has_bridge:1; + unsigned int has_bridge:1; int (*init_reg_clock)(struct pmic_wrapper *wrp); int (*init_soc_specific)(struct pmic_wrapper *wrp); }; @@ -593,7 +754,7 @@ static int pwrap_wait_for_state(struct pmic_wrapper *wrp, } while (1); } -static int pwrap_write(struct pmic_wrapper *wrp, u32 adr, u32 wdata) +static int pwrap_read16(struct pmic_wrapper *wrp, u32 adr, u32 *rdata) { int ret; @@ -603,14 +764,54 @@ static int pwrap_write(struct pmic_wrapper *wrp, u32 adr, u32 wdata) return ret; } - pwrap_writel(wrp, (1 << 31) | ((adr >> 1) << 16) | wdata, - PWRAP_WACS2_CMD); + pwrap_writel(wrp, (adr >> 1) << 16, PWRAP_WACS2_CMD); + + ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_vldclr); + if (ret) + return ret; + + *rdata = PWRAP_GET_WACS_RDATA(pwrap_readl(wrp, PWRAP_WACS2_RDATA)); + + pwrap_writel(wrp, 1, PWRAP_WACS2_VLDCLR); + + return 0; +} + +static int pwrap_read32(struct pmic_wrapper *wrp, u32 adr, u32 *rdata) +{ + int ret, msb; + + *rdata = 0; + for (msb = 0; msb < 2; msb++) { + ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle); + if (ret) { + pwrap_leave_fsm_vldclr(wrp); + return ret; + } + + pwrap_writel(wrp, ((msb << 30) | (adr << 16)), + PWRAP_WACS2_CMD); + + ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_vldclr); + if (ret) + return ret; + + *rdata += (PWRAP_GET_WACS_RDATA(pwrap_readl(wrp, + PWRAP_WACS2_RDATA)) << (16 * msb)); + + pwrap_writel(wrp, 1, PWRAP_WACS2_VLDCLR); + } return 0; } static int pwrap_read(struct pmic_wrapper *wrp, u32 adr, u32 *rdata) { + return wrp->slave->pwrap_read(wrp, adr, rdata); +} + +static int pwrap_write16(struct pmic_wrapper *wrp, u32 adr, u32 wdata) +{ int ret; ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle); @@ -619,19 +820,46 @@ static int pwrap_read(struct pmic_wrapper *wrp, u32 adr, u32 *rdata) return ret; } - pwrap_writel(wrp, (adr >> 1) << 16, PWRAP_WACS2_CMD); + pwrap_writel(wrp, (1 << 31) | ((adr >> 1) << 16) | wdata, + PWRAP_WACS2_CMD); - ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_vldclr); - if (ret) - return ret; + return 0; +} - *rdata = PWRAP_GET_WACS_RDATA(pwrap_readl(wrp, PWRAP_WACS2_RDATA)); +static int pwrap_write32(struct pmic_wrapper *wrp, u32 adr, u32 wdata) +{ + int ret, msb, rdata; - pwrap_writel(wrp, 1, PWRAP_WACS2_VLDCLR); + for (msb = 0; msb < 2; msb++) { + ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle); + if (ret) { + pwrap_leave_fsm_vldclr(wrp); + return ret; + } + + pwrap_writel(wrp, (1 << 31) | (msb << 30) | (adr << 16) | + ((wdata >> (msb * 16)) & 0xffff), + PWRAP_WACS2_CMD); + + /* + * The pwrap_read operation is the requirement of hardware used + * for the synchronization between two successive 16-bit + * pwrap_writel operations composing one 32-bit bus writing. + * Otherwise, we'll find the result fails on the lower 16-bit + * pwrap writing. + */ + if (!msb) + pwrap_read(wrp, adr, &rdata); + } return 0; } +static int pwrap_write(struct pmic_wrapper *wrp, u32 adr, u32 wdata) +{ + return wrp->slave->pwrap_write(wrp, adr, wdata); +} + static int pwrap_regmap_read(void *context, u32 adr, u32 *rdata) { return pwrap_read(context, adr, rdata); @@ -711,23 +939,75 @@ static int pwrap_init_sidly(struct pmic_wrapper *wrp) return 0; } -static int pwrap_mt8135_init_reg_clock(struct pmic_wrapper *wrp) +static int pwrap_init_dual_io(struct pmic_wrapper *wrp) { - pwrap_writel(wrp, 0x4, PWRAP_CSHEXT); - pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_WRITE); - pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_READ); - pwrap_writel(wrp, 0x0, PWRAP_CSLEXT_START); - pwrap_writel(wrp, 0x0, PWRAP_CSLEXT_END); + int ret; + u32 rdata; + + /* Enable dual IO mode */ + pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1); + + /* Check IDLE & INIT_DONE in advance */ + ret = pwrap_wait_for_state(wrp, + pwrap_is_fsm_idle_and_sync_idle); + if (ret) { + dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret); + return ret; + } + + pwrap_writel(wrp, 1, PWRAP_DIO_EN); + + /* Read Test */ + pwrap_read(wrp, + wrp->slave->dew_regs[PWRAP_DEW_READ_TEST], &rdata); + if (rdata != PWRAP_DEW_READ_TEST_VAL) { + dev_err(wrp->dev, + "Read failed on DIO mode: 0x%04x!=0x%04x\n", + PWRAP_DEW_READ_TEST_VAL, rdata); + return -EFAULT; + } return 0; } -static int pwrap_mt8173_init_reg_clock(struct pmic_wrapper *wrp) +/* + * pwrap_init_chip_select_ext is used to configure CS extension time for each + * phase during data transactions on the pwrap bus. + */ +static void pwrap_init_chip_select_ext(struct pmic_wrapper *wrp, u8 hext_write, + u8 hext_read, u8 lext_start, + u8 lext_end) { - pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_WRITE); - pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_READ); - pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_START); - pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_END); + /* + * After finishing a write and read transaction, extends CS high time + * to be at least xT of BUS CLK as hext_write and hext_read specifies + * respectively. + */ + pwrap_writel(wrp, hext_write, PWRAP_CSHEXT_WRITE); + pwrap_writel(wrp, hext_read, PWRAP_CSHEXT_READ); + + /* + * Extends CS low time after CSL and before CSH command to be at + * least xT of BUS CLK as lext_start and lext_end specifies + * respectively. + */ + pwrap_writel(wrp, lext_start, PWRAP_CSLEXT_START); + pwrap_writel(wrp, lext_end, PWRAP_CSLEXT_END); +} + +static int pwrap_common_init_reg_clock(struct pmic_wrapper *wrp) +{ + switch (wrp->master->type) { + case PWRAP_MT8173: + pwrap_init_chip_select_ext(wrp, 0, 4, 2, 2); + break; + case PWRAP_MT8135: + pwrap_writel(wrp, 0x4, PWRAP_CSHEXT); + pwrap_init_chip_select_ext(wrp, 0, 4, 0, 0); + break; + default: + break; + } return 0; } @@ -737,20 +1017,16 @@ static int pwrap_mt2701_init_reg_clock(struct pmic_wrapper *wrp) switch (wrp->slave->type) { case PMIC_MT6397: pwrap_writel(wrp, 0xc, PWRAP_RDDMY); - pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_WRITE); - pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_READ); - pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_START); - pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_END); + pwrap_init_chip_select_ext(wrp, 4, 0, 2, 2); break; case PMIC_MT6323: pwrap_writel(wrp, 0x8, PWRAP_RDDMY); pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_RDDMY_NO], 0x8); - pwrap_writel(wrp, 0x5, PWRAP_CSHEXT_WRITE); - pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_READ); - pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_START); - pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_END); + pwrap_init_chip_select_ext(wrp, 5, 0, 2, 2); + break; + default: break; } @@ -794,6 +1070,9 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp) case PWRAP_MT8173: pwrap_writel(wrp, 1, PWRAP_CIPHER_EN); break; + case PWRAP_MT7622: + pwrap_writel(wrp, 0, PWRAP_CIPHER_EN); + break; } /* Config cipher mode @PMIC */ @@ -815,6 +1094,8 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp) pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_EN], 0x1); break; + default: + break; } /* wait for cipher data ready@AP */ @@ -827,7 +1108,8 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp) /* wait for cipher data ready@PMIC */ ret = pwrap_wait_for_state(wrp, pwrap_is_pmic_cipher_ready); if (ret) { - dev_err(wrp->dev, "timeout waiting for cipher data ready@PMIC\n"); + dev_err(wrp->dev, + "timeout waiting for cipher data ready@PMIC\n"); return ret; } @@ -854,6 +1136,30 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp) return 0; } +static int pwrap_init_security(struct pmic_wrapper *wrp) +{ + int ret; + + /* Enable encryption */ + ret = pwrap_init_cipher(wrp); + if (ret) + return ret; + + /* Signature checking - using CRC */ + if (pwrap_write(wrp, + wrp->slave->dew_regs[PWRAP_DEW_CRC_EN], 0x1)) + return -EFAULT; + + pwrap_writel(wrp, 0x1, PWRAP_CRC_EN); + pwrap_writel(wrp, 0x0, PWRAP_SIG_MODE); + pwrap_writel(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_VAL], + PWRAP_SIG_ADR); + pwrap_writel(wrp, + wrp->master->arb_en_all, PWRAP_HIPRIO_ARB_EN); + + return 0; +} + static int pwrap_mt8135_init_soc_specific(struct pmic_wrapper *wrp) { /* enable pwrap events and pwrap bridge in AP side */ @@ -911,10 +1217,18 @@ static int pwrap_mt2701_init_soc_specific(struct pmic_wrapper *wrp) return 0; } +static int pwrap_mt7622_init_soc_specific(struct pmic_wrapper *wrp) +{ + pwrap_writel(wrp, 0, PWRAP_STAUPD_PRD); + /* enable 2wire SPI master */ + pwrap_writel(wrp, 0x8000000, PWRAP_SPI2_CTRL); + + return 0; +} + static int pwrap_init(struct pmic_wrapper *wrp) { int ret; - u32 rdata; reset_control_reset(wrp->rstc); if (wrp->rstc_bridge) @@ -926,10 +1240,12 @@ static int pwrap_init(struct pmic_wrapper *wrp) pwrap_writel(wrp, 0, PWRAP_DCM_DBC_PRD); } - /* Reset SPI slave */ - ret = pwrap_reset_spislave(wrp); - if (ret) - return ret; + if (HAS_CAP(wrp->slave->caps, PWRAP_SLV_CAP_SPI)) { + /* Reset SPI slave */ + ret = pwrap_reset_spislave(wrp); + if (ret) + return ret; + } pwrap_writel(wrp, 1, PWRAP_WRAP_EN); @@ -941,45 +1257,26 @@ static int pwrap_init(struct pmic_wrapper *wrp) if (ret) return ret; - /* Setup serial input delay */ - ret = pwrap_init_sidly(wrp); - if (ret) - return ret; - - /* Enable dual IO mode */ - pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1); - - /* Check IDLE & INIT_DONE in advance */ - ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle_and_sync_idle); - if (ret) { - dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret); - return ret; + if (HAS_CAP(wrp->slave->caps, PWRAP_SLV_CAP_SPI)) { + /* Setup serial input delay */ + ret = pwrap_init_sidly(wrp); + if (ret) + return ret; } - pwrap_writel(wrp, 1, PWRAP_DIO_EN); - - /* Read Test */ - pwrap_read(wrp, wrp->slave->dew_regs[PWRAP_DEW_READ_TEST], &rdata); - if (rdata != PWRAP_DEW_READ_TEST_VAL) { - dev_err(wrp->dev, "Read test failed after switch to DIO mode: 0x%04x != 0x%04x\n", - PWRAP_DEW_READ_TEST_VAL, rdata); - return -EFAULT; + if (HAS_CAP(wrp->slave->caps, PWRAP_SLV_CAP_DUALIO)) { + /* Enable dual I/O mode */ + ret = pwrap_init_dual_io(wrp); + if (ret) + return ret; } - /* Enable encryption */ - ret = pwrap_init_cipher(wrp); - if (ret) - return ret; - - /* Signature checking - using CRC */ - if (pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_EN], 0x1)) - return -EFAULT; - - pwrap_writel(wrp, 0x1, PWRAP_CRC_EN); - pwrap_writel(wrp, 0x0, PWRAP_SIG_MODE); - pwrap_writel(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_VAL], - PWRAP_SIG_ADR); - pwrap_writel(wrp, wrp->master->arb_en_all, PWRAP_HIPRIO_ARB_EN); + if (HAS_CAP(wrp->slave->caps, PWRAP_SLV_CAP_SECURITY)) { + /* Enable security on bus */ + ret = pwrap_init_security(wrp); + if (ret) + return ret; + } if (wrp->master->type == PWRAP_MT8135) pwrap_writel(wrp, 0x7, PWRAP_RRARB_EN); @@ -1023,7 +1320,7 @@ static irqreturn_t pwrap_interrupt(int irqno, void *dev_id) return IRQ_HANDLED; } -static const struct regmap_config pwrap_regmap_config = { +static const struct regmap_config pwrap_regmap_config16 = { .reg_bits = 16, .val_bits = 16, .reg_stride = 2, @@ -1032,14 +1329,42 @@ static const struct regmap_config pwrap_regmap_config = { .max_register = 0xffff, }; +static const struct regmap_config pwrap_regmap_config32 = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .reg_read = pwrap_regmap_read, + .reg_write = pwrap_regmap_write, + .max_register = 0xffff, +}; + static const struct pwrap_slv_type pmic_mt6323 = { .dew_regs = mt6323_regs, .type = PMIC_MT6323, + .regmap = &pwrap_regmap_config16, + .caps = PWRAP_SLV_CAP_SPI | PWRAP_SLV_CAP_DUALIO | + PWRAP_SLV_CAP_SECURITY, + .pwrap_read = pwrap_read16, + .pwrap_write = pwrap_write16, +}; + +static const struct pwrap_slv_type pmic_mt6380 = { + .dew_regs = NULL, + .type = PMIC_MT6380, + .regmap = &pwrap_regmap_config32, + .caps = 0, + .pwrap_read = pwrap_read32, + .pwrap_write = pwrap_write32, }; static const struct pwrap_slv_type pmic_mt6397 = { .dew_regs = mt6397_regs, .type = PMIC_MT6397, + .regmap = &pwrap_regmap_config16, + .caps = PWRAP_SLV_CAP_SPI | PWRAP_SLV_CAP_DUALIO | + PWRAP_SLV_CAP_SECURITY, + .pwrap_read = pwrap_read16, + .pwrap_write = pwrap_write16, }; static const struct of_device_id of_slave_match_tbl[] = { @@ -1047,6 +1372,12 @@ static const struct of_device_id of_slave_match_tbl[] = { .compatible = "mediatek,mt6323", .data = &pmic_mt6323, }, { + /* The MT6380 PMIC only implements a regulator, so we bind it + * directly instead of using a MFD. + */ + .compatible = "mediatek,mt6380-regulator", + .data = &pmic_mt6380, + }, { .compatible = "mediatek,mt6397", .data = &pmic_mt6397, }, { @@ -1067,6 +1398,18 @@ static const struct pmic_wrapper_type pwrap_mt2701 = { .init_soc_specific = pwrap_mt2701_init_soc_specific, }; +static const struct pmic_wrapper_type pwrap_mt7622 = { + .regs = mt7622_regs, + .type = PWRAP_MT7622, + .arb_en_all = 0xff, + .int_en_all = ~(u32)BIT(31), + .spi_w = PWRAP_MAN_CMD_SPI_WRITE, + .wdt_src = PWRAP_WDT_SRC_MASK_ALL, + .has_bridge = 0, + .init_reg_clock = pwrap_common_init_reg_clock, + .init_soc_specific = pwrap_mt7622_init_soc_specific, +}; + static const struct pmic_wrapper_type pwrap_mt8135 = { .regs = mt8135_regs, .type = PWRAP_MT8135, @@ -1075,7 +1418,7 @@ static const struct pmic_wrapper_type pwrap_mt8135 = { .spi_w = PWRAP_MAN_CMD_SPI_WRITE, .wdt_src = PWRAP_WDT_SRC_MASK_ALL, .has_bridge = 1, - .init_reg_clock = pwrap_mt8135_init_reg_clock, + .init_reg_clock = pwrap_common_init_reg_clock, .init_soc_specific = pwrap_mt8135_init_soc_specific, }; @@ -1087,7 +1430,7 @@ static const struct pmic_wrapper_type pwrap_mt8173 = { .spi_w = PWRAP_MAN_CMD_SPI_WRITE, .wdt_src = PWRAP_WDT_SRC_MASK_NO_STAUPD, .has_bridge = 0, - .init_reg_clock = pwrap_mt8173_init_reg_clock, + .init_reg_clock = pwrap_common_init_reg_clock, .init_soc_specific = pwrap_mt8173_init_soc_specific, }; @@ -1096,6 +1439,9 @@ static const struct of_device_id of_pwrap_match_tbl[] = { .compatible = "mediatek,mt2701-pwrap", .data = &pwrap_mt2701, }, { + .compatible = "mediatek,mt7622-pwrap", + .data = &pwrap_mt7622, + }, { .compatible = "mediatek,mt8135-pwrap", .data = &pwrap_mt8135, }, { @@ -1159,23 +1505,27 @@ static int pwrap_probe(struct platform_device *pdev) if (IS_ERR(wrp->bridge_base)) return PTR_ERR(wrp->bridge_base); - wrp->rstc_bridge = devm_reset_control_get(wrp->dev, "pwrap-bridge"); + wrp->rstc_bridge = devm_reset_control_get(wrp->dev, + "pwrap-bridge"); if (IS_ERR(wrp->rstc_bridge)) { ret = PTR_ERR(wrp->rstc_bridge); - dev_dbg(wrp->dev, "cannot get pwrap-bridge reset: %d\n", ret); + dev_dbg(wrp->dev, + "cannot get pwrap-bridge reset: %d\n", ret); return ret; } } wrp->clk_spi = devm_clk_get(wrp->dev, "spi"); if (IS_ERR(wrp->clk_spi)) { - dev_dbg(wrp->dev, "failed to get clock: %ld\n", PTR_ERR(wrp->clk_spi)); + dev_dbg(wrp->dev, "failed to get clock: %ld\n", + PTR_ERR(wrp->clk_spi)); return PTR_ERR(wrp->clk_spi); } wrp->clk_wrap = devm_clk_get(wrp->dev, "wrap"); if (IS_ERR(wrp->clk_wrap)) { - dev_dbg(wrp->dev, "failed to get clock: %ld\n", PTR_ERR(wrp->clk_wrap)); + dev_dbg(wrp->dev, "failed to get clock: %ld\n", + PTR_ERR(wrp->clk_wrap)); return PTR_ERR(wrp->clk_wrap); } @@ -1220,12 +1570,13 @@ static int pwrap_probe(struct platform_device *pdev) pwrap_writel(wrp, wrp->master->int_en_all, PWRAP_INT_EN); irq = platform_get_irq(pdev, 0); - ret = devm_request_irq(wrp->dev, irq, pwrap_interrupt, IRQF_TRIGGER_HIGH, - "mt-pmic-pwrap", wrp); + ret = devm_request_irq(wrp->dev, irq, pwrap_interrupt, + IRQF_TRIGGER_HIGH, + "mt-pmic-pwrap", wrp); if (ret) goto err_out2; - wrp->regmap = devm_regmap_init(wrp->dev, NULL, wrp, &pwrap_regmap_config); + wrp->regmap = devm_regmap_init(wrp->dev, NULL, wrp, wrp->slave->regmap); if (IS_ERR(wrp->regmap)) { ret = PTR_ERR(wrp->regmap); goto err_out2; diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index b00bccddcd3b..b81374bb6713 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -35,6 +35,17 @@ config QCOM_PM modes. It interface with various system drivers to put the cores in low power modes. +config QCOM_RMTFS_MEM + tristate "Qualcomm Remote Filesystem memory driver" + depends on ARCH_QCOM + help + The Qualcomm remote filesystem memory driver is used for allocating + and exposing regions of shared memory with remote processors for the + purpose of exchanging sector-data between the remote filesystem + service and its clients. + + Say y here if you intend to boot the modem remoteproc. + config QCOM_SMEM tristate "Qualcomm Shared Memory Manager (SMEM)" depends on ARCH_QCOM diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile index fab44666b214..40c56f67e94a 100644 --- a/drivers/soc/qcom/Makefile +++ b/drivers/soc/qcom/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_QCOM_GLINK_SSR) += glink_ssr.o obj-$(CONFIG_QCOM_GSBI) += qcom_gsbi.o obj-$(CONFIG_QCOM_MDT_LOADER) += mdt_loader.o obj-$(CONFIG_QCOM_PM) += spm.o +obj-$(CONFIG_QCOM_RMTFS_MEM) += rmtfs_mem.o obj-$(CONFIG_QCOM_SMD_RPM) += smd-rpm.o obj-$(CONFIG_QCOM_SMEM) += smem.o obj-$(CONFIG_QCOM_SMEM_STATE) += smem_state.o diff --git a/drivers/soc/qcom/rmtfs_mem.c b/drivers/soc/qcom/rmtfs_mem.c new file mode 100644 index 000000000000..ce35ff748adf --- /dev/null +++ b/drivers/soc/qcom/rmtfs_mem.c @@ -0,0 +1,269 @@ +/* + * Copyright (c) 2017 Linaro Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/cdev.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/of_reserved_mem.h> +#include <linux/dma-mapping.h> +#include <linux/slab.h> +#include <linux/uaccess.h> +#include <linux/io.h> +#include <linux/qcom_scm.h> + +#define QCOM_RMTFS_MEM_DEV_MAX (MINORMASK + 1) + +static dev_t qcom_rmtfs_mem_major; + +struct qcom_rmtfs_mem { + struct device dev; + struct cdev cdev; + + void *base; + phys_addr_t addr; + phys_addr_t size; + + unsigned int client_id; +}; + +static ssize_t qcom_rmtfs_mem_show(struct device *dev, + struct device_attribute *attr, + char *buf); + +static DEVICE_ATTR(phys_addr, 0400, qcom_rmtfs_mem_show, NULL); +static DEVICE_ATTR(size, 0400, qcom_rmtfs_mem_show, NULL); +static DEVICE_ATTR(client_id, 0400, qcom_rmtfs_mem_show, NULL); + +static ssize_t qcom_rmtfs_mem_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct qcom_rmtfs_mem *rmtfs_mem = container_of(dev, + struct qcom_rmtfs_mem, + dev); + + if (attr == &dev_attr_phys_addr) + return sprintf(buf, "%pa\n", &rmtfs_mem->addr); + if (attr == &dev_attr_size) + return sprintf(buf, "%pa\n", &rmtfs_mem->size); + if (attr == &dev_attr_client_id) + return sprintf(buf, "%d\n", rmtfs_mem->client_id); + + return -EINVAL; +} + +static struct attribute *qcom_rmtfs_mem_attrs[] = { + &dev_attr_phys_addr.attr, + &dev_attr_size.attr, + &dev_attr_client_id.attr, + NULL +}; +ATTRIBUTE_GROUPS(qcom_rmtfs_mem); + +static int qcom_rmtfs_mem_open(struct inode *inode, struct file *filp) +{ + struct qcom_rmtfs_mem *rmtfs_mem = container_of(inode->i_cdev, + struct qcom_rmtfs_mem, + cdev); + + get_device(&rmtfs_mem->dev); + filp->private_data = rmtfs_mem; + + return 0; +} +static ssize_t qcom_rmtfs_mem_read(struct file *filp, + char __user *buf, size_t count, loff_t *f_pos) +{ + struct qcom_rmtfs_mem *rmtfs_mem = filp->private_data; + + if (*f_pos >= rmtfs_mem->size) + return 0; + + if (*f_pos + count >= rmtfs_mem->size) + count = rmtfs_mem->size - *f_pos; + + if (copy_to_user(buf, rmtfs_mem->base + *f_pos, count)) + return -EFAULT; + + *f_pos += count; + return count; +} + +static ssize_t qcom_rmtfs_mem_write(struct file *filp, + const char __user *buf, size_t count, + loff_t *f_pos) +{ + struct qcom_rmtfs_mem *rmtfs_mem = filp->private_data; + + if (*f_pos >= rmtfs_mem->size) + return 0; + + if (*f_pos + count >= rmtfs_mem->size) + count = rmtfs_mem->size - *f_pos; + + if (copy_from_user(rmtfs_mem->base + *f_pos, buf, count)) + return -EFAULT; + + *f_pos += count; + return count; +} + +static int qcom_rmtfs_mem_release(struct inode *inode, struct file *filp) +{ + struct qcom_rmtfs_mem *rmtfs_mem = filp->private_data; + + put_device(&rmtfs_mem->dev); + + return 0; +} + +static const struct file_operations qcom_rmtfs_mem_fops = { + .owner = THIS_MODULE, + .open = qcom_rmtfs_mem_open, + .read = qcom_rmtfs_mem_read, + .write = qcom_rmtfs_mem_write, + .release = qcom_rmtfs_mem_release, + .llseek = default_llseek, +}; + +static void qcom_rmtfs_mem_release_device(struct device *dev) +{ + struct qcom_rmtfs_mem *rmtfs_mem = container_of(dev, + struct qcom_rmtfs_mem, + dev); + + kfree(rmtfs_mem); +} + +static int qcom_rmtfs_mem_probe(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + struct reserved_mem *rmem; + struct qcom_rmtfs_mem *rmtfs_mem; + u32 client_id; + int ret; + + rmem = of_reserved_mem_lookup(node); + if (!rmem) { + dev_err(&pdev->dev, "failed to acquire memory region\n"); + return -EINVAL; + } + + ret = of_property_read_u32(node, "qcom,client-id", &client_id); + if (ret) { + dev_err(&pdev->dev, "failed to parse \"qcom,client-id\"\n"); + return ret; + + } + + rmtfs_mem = kzalloc(sizeof(*rmtfs_mem), GFP_KERNEL); + if (!rmtfs_mem) + return -ENOMEM; + + rmtfs_mem->addr = rmem->base; + rmtfs_mem->client_id = client_id; + rmtfs_mem->size = rmem->size; + + device_initialize(&rmtfs_mem->dev); + rmtfs_mem->dev.parent = &pdev->dev; + rmtfs_mem->dev.groups = qcom_rmtfs_mem_groups; + + rmtfs_mem->base = devm_memremap(&rmtfs_mem->dev, rmtfs_mem->addr, + rmtfs_mem->size, MEMREMAP_WC); + if (IS_ERR(rmtfs_mem->base)) { + dev_err(&pdev->dev, "failed to remap rmtfs_mem region\n"); + ret = PTR_ERR(rmtfs_mem->base); + goto put_device; + } + + cdev_init(&rmtfs_mem->cdev, &qcom_rmtfs_mem_fops); + rmtfs_mem->cdev.owner = THIS_MODULE; + + dev_set_name(&rmtfs_mem->dev, "qcom_rmtfs_mem%d", client_id); + rmtfs_mem->dev.id = client_id; + rmtfs_mem->dev.devt = MKDEV(MAJOR(qcom_rmtfs_mem_major), client_id); + + ret = cdev_device_add(&rmtfs_mem->cdev, &rmtfs_mem->dev); + if (ret) { + dev_err(&pdev->dev, "failed to add cdev: %d\n", ret); + goto put_device; + } + + rmtfs_mem->dev.release = qcom_rmtfs_mem_release_device; + + dev_set_drvdata(&pdev->dev, rmtfs_mem); + + return 0; + +put_device: + put_device(&rmtfs_mem->dev); + + return ret; +} + +static int qcom_rmtfs_mem_remove(struct platform_device *pdev) +{ + struct qcom_rmtfs_mem *rmtfs_mem = dev_get_drvdata(&pdev->dev); + + cdev_device_del(&rmtfs_mem->cdev, &rmtfs_mem->dev); + put_device(&rmtfs_mem->dev); + + return 0; +} + +static const struct of_device_id qcom_rmtfs_mem_of_match[] = { + { .compatible = "qcom,rmtfs-mem" }, + {} +}; +MODULE_DEVICE_TABLE(of, qcom_rmtfs_mem_of_match); + +static struct platform_driver qcom_rmtfs_mem_driver = { + .probe = qcom_rmtfs_mem_probe, + .remove = qcom_rmtfs_mem_remove, + .driver = { + .name = "qcom_rmtfs_mem", + .of_match_table = qcom_rmtfs_mem_of_match, + }, +}; + +static int qcom_rmtfs_mem_init(void) +{ + int ret; + + ret = alloc_chrdev_region(&qcom_rmtfs_mem_major, 0, + QCOM_RMTFS_MEM_DEV_MAX, "qcom_rmtfs_mem"); + if (ret < 0) { + pr_err("qcom_rmtfs_mem: failed to allocate char dev region\n"); + return ret; + } + + ret = platform_driver_register(&qcom_rmtfs_mem_driver); + if (ret < 0) { + pr_err("qcom_rmtfs_mem: failed to register rmtfs_mem driver\n"); + unregister_chrdev_region(qcom_rmtfs_mem_major, + QCOM_RMTFS_MEM_DEV_MAX); + } + + return ret; +} +module_init(qcom_rmtfs_mem_init); + +static void qcom_rmtfs_mem_exit(void) +{ + platform_driver_unregister(&qcom_rmtfs_mem_driver); + unregister_chrdev_region(qcom_rmtfs_mem_major, QCOM_RMTFS_MEM_DEV_MAX); +} +module_exit(qcom_rmtfs_mem_exit); diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index 18ec52f2078a..0b94d62fad2b 100644 --- a/drivers/soc/qcom/smem.c +++ b/drivers/soc/qcom/smem.c @@ -52,8 +52,13 @@ * * Items in the non-cached region are allocated from the start of the partition * while items in the cached region are allocated from the end. The free area - * is hence the region between the cached and non-cached offsets. + * is hence the region between the cached and non-cached offsets. The header of + * cached items comes after the data. * + * Version 12 (SMEM_GLOBAL_PART_VERSION) changes the item alloc/get procedure + * for the global heap. A new global partition is created from the global heap + * region with partition type (SMEM_GLOBAL_HOST) and the max smem item count is + * set by the bootloader. * * To synchronize allocations in the shared memory heaps a remote spinlock must * be held - currently lock number 3 of the sfpb or tcsr is used for this on all @@ -62,13 +67,13 @@ */ /* - * Item 3 of the global heap contains an array of versions for the various - * software components in the SoC. We verify that the boot loader version is - * what the expected version (SMEM_EXPECTED_VERSION) as a sanity check. + * The version member of the smem header contains an array of versions for the + * various software components in the SoC. We verify that the boot loader + * version is a valid version as a sanity check. */ -#define SMEM_ITEM_VERSION 3 -#define SMEM_MASTER_SBL_VERSION_INDEX 7 -#define SMEM_EXPECTED_VERSION 11 +#define SMEM_MASTER_SBL_VERSION_INDEX 7 +#define SMEM_GLOBAL_HEAP_VERSION 11 +#define SMEM_GLOBAL_PART_VERSION 12 /* * The first 8 items are only to be allocated by the boot loader while @@ -82,8 +87,11 @@ /* Processor/host identifier for the application processor */ #define SMEM_HOST_APPS 0 +/* Processor/host identifier for the global partition */ +#define SMEM_GLOBAL_HOST 0xfffe + /* Max number of processors/hosts in a system */ -#define SMEM_HOST_COUNT 9 +#define SMEM_HOST_COUNT 10 /** * struct smem_proc_comm - proc_comm communication struct (legacy) @@ -140,6 +148,7 @@ struct smem_header { * @flags: flags for the partition (currently unused) * @host0: first processor/host with access to this partition * @host1: second processor/host with access to this partition + * @cacheline: alignment for "cached" entries * @reserved: reserved entries for later use */ struct smem_ptable_entry { @@ -148,7 +157,8 @@ struct smem_ptable_entry { __le32 flags; __le16 host0; __le16 host1; - __le32 reserved[8]; + __le32 cacheline; + __le32 reserved[7]; }; /** @@ -213,6 +223,24 @@ struct smem_private_entry { #define SMEM_PRIVATE_CANARY 0xa5a5 /** + * struct smem_info - smem region info located after the table of contents + * @magic: magic number, must be SMEM_INFO_MAGIC + * @size: size of the smem region + * @base_addr: base address of the smem region + * @reserved: for now reserved entry + * @num_items: highest accepted item number + */ +struct smem_info { + u8 magic[4]; + __le32 size; + __le32 base_addr; + __le32 reserved; + __le16 num_items; +}; + +static const u8 SMEM_INFO_MAGIC[] = { 0x53, 0x49, 0x49, 0x49 }; /* SIII */ + +/** * struct smem_region - representation of a chunk of memory used for smem * @aux_base: identifier of aux_mem base * @virt_base: virtual base address of memory with this aux_mem identifier @@ -228,8 +256,12 @@ struct smem_region { * struct qcom_smem - device data for the smem device * @dev: device pointer * @hwlock: reference to a hwspinlock + * @global_partition: pointer to global partition when in use + * @global_cacheline: cacheline size for global partition * @partitions: list of pointers to partitions affecting the current * processor/host + * @cacheline: list of cacheline sizes for each host + * @item_count: max accepted item number * @num_regions: number of @regions * @regions: list of the memory regions defining the shared memory */ @@ -238,21 +270,33 @@ struct qcom_smem { struct hwspinlock *hwlock; + struct smem_partition_header *global_partition; + size_t global_cacheline; struct smem_partition_header *partitions[SMEM_HOST_COUNT]; + size_t cacheline[SMEM_HOST_COUNT]; + u32 item_count; unsigned num_regions; struct smem_region regions[0]; }; static struct smem_private_entry * -phdr_to_last_private_entry(struct smem_partition_header *phdr) +phdr_to_last_uncached_entry(struct smem_partition_header *phdr) { void *p = phdr; return p + le32_to_cpu(phdr->offset_free_uncached); } -static void *phdr_to_first_cached_entry(struct smem_partition_header *phdr) +static void *phdr_to_first_cached_entry(struct smem_partition_header *phdr, + size_t cacheline) +{ + void *p = phdr; + + return p + le32_to_cpu(phdr->size) - ALIGN(sizeof(*phdr), cacheline); +} + +static void *phdr_to_last_cached_entry(struct smem_partition_header *phdr) { void *p = phdr; @@ -260,7 +304,7 @@ static void *phdr_to_first_cached_entry(struct smem_partition_header *phdr) } static struct smem_private_entry * -phdr_to_first_private_entry(struct smem_partition_header *phdr) +phdr_to_first_uncached_entry(struct smem_partition_header *phdr) { void *p = phdr; @@ -268,7 +312,7 @@ phdr_to_first_private_entry(struct smem_partition_header *phdr) } static struct smem_private_entry * -private_entry_next(struct smem_private_entry *e) +uncached_entry_next(struct smem_private_entry *e) { void *p = e; @@ -276,13 +320,28 @@ private_entry_next(struct smem_private_entry *e) le32_to_cpu(e->size); } -static void *entry_to_item(struct smem_private_entry *e) +static struct smem_private_entry * +cached_entry_next(struct smem_private_entry *e, size_t cacheline) +{ + void *p = e; + + return p - le32_to_cpu(e->size) - ALIGN(sizeof(*e), cacheline); +} + +static void *uncached_entry_to_item(struct smem_private_entry *e) { void *p = e; return p + sizeof(*e) + le16_to_cpu(e->padding_hdr); } +static void *cached_entry_to_item(struct smem_private_entry *e) +{ + void *p = e; + + return p - le32_to_cpu(e->size); +} + /* Pointer to the one and only smem handle */ static struct qcom_smem *__smem; @@ -290,32 +349,30 @@ static struct qcom_smem *__smem; #define HWSPINLOCK_TIMEOUT 1000 static int qcom_smem_alloc_private(struct qcom_smem *smem, - unsigned host, + struct smem_partition_header *phdr, unsigned item, size_t size) { - struct smem_partition_header *phdr; struct smem_private_entry *hdr, *end; size_t alloc_size; void *cached; - phdr = smem->partitions[host]; - hdr = phdr_to_first_private_entry(phdr); - end = phdr_to_last_private_entry(phdr); - cached = phdr_to_first_cached_entry(phdr); + hdr = phdr_to_first_uncached_entry(phdr); + end = phdr_to_last_uncached_entry(phdr); + cached = phdr_to_last_cached_entry(phdr); while (hdr < end) { if (hdr->canary != SMEM_PRIVATE_CANARY) { dev_err(smem->dev, - "Found invalid canary in host %d partition\n", - host); + "Found invalid canary in hosts %d:%d partition\n", + phdr->host0, phdr->host1); return -EINVAL; } if (le16_to_cpu(hdr->item) == item) return -EEXIST; - hdr = private_entry_next(hdr); + hdr = uncached_entry_next(hdr); } /* Check that we don't grow into the cached region */ @@ -346,11 +403,8 @@ static int qcom_smem_alloc_global(struct qcom_smem *smem, unsigned item, size_t size) { - struct smem_header *header; struct smem_global_entry *entry; - - if (WARN_ON(item >= SMEM_ITEM_COUNT)) - return -EINVAL; + struct smem_header *header; header = smem->regions[0].virt_base; entry = &header->toc[item]; @@ -389,6 +443,7 @@ static int qcom_smem_alloc_global(struct qcom_smem *smem, */ int qcom_smem_alloc(unsigned host, unsigned item, size_t size) { + struct smem_partition_header *phdr; unsigned long flags; int ret; @@ -401,16 +456,24 @@ int qcom_smem_alloc(unsigned host, unsigned item, size_t size) return -EINVAL; } + if (WARN_ON(item >= __smem->item_count)) + return -EINVAL; + ret = hwspin_lock_timeout_irqsave(__smem->hwlock, HWSPINLOCK_TIMEOUT, &flags); if (ret) return ret; - if (host < SMEM_HOST_COUNT && __smem->partitions[host]) - ret = qcom_smem_alloc_private(__smem, host, item, size); - else + if (host < SMEM_HOST_COUNT && __smem->partitions[host]) { + phdr = __smem->partitions[host]; + ret = qcom_smem_alloc_private(__smem, phdr, item, size); + } else if (__smem->global_partition) { + phdr = __smem->global_partition; + ret = qcom_smem_alloc_private(__smem, phdr, item, size); + } else { ret = qcom_smem_alloc_global(__smem, item, size); + } hwspin_unlock_irqrestore(__smem->hwlock, &flags); @@ -428,9 +491,6 @@ static void *qcom_smem_get_global(struct qcom_smem *smem, u32 aux_base; unsigned i; - if (WARN_ON(item >= SMEM_ITEM_COUNT)) - return ERR_PTR(-EINVAL); - header = smem->regions[0].virt_base; entry = &header->toc[item]; if (!entry->allocated) @@ -452,37 +512,58 @@ static void *qcom_smem_get_global(struct qcom_smem *smem, } static void *qcom_smem_get_private(struct qcom_smem *smem, - unsigned host, + struct smem_partition_header *phdr, + size_t cacheline, unsigned item, size_t *size) { - struct smem_partition_header *phdr; struct smem_private_entry *e, *end; - phdr = smem->partitions[host]; - e = phdr_to_first_private_entry(phdr); - end = phdr_to_last_private_entry(phdr); + e = phdr_to_first_uncached_entry(phdr); + end = phdr_to_last_uncached_entry(phdr); while (e < end) { - if (e->canary != SMEM_PRIVATE_CANARY) { - dev_err(smem->dev, - "Found invalid canary in host %d partition\n", - host); - return ERR_PTR(-EINVAL); + if (e->canary != SMEM_PRIVATE_CANARY) + goto invalid_canary; + + if (le16_to_cpu(e->item) == item) { + if (size != NULL) + *size = le32_to_cpu(e->size) - + le16_to_cpu(e->padding_data); + + return uncached_entry_to_item(e); } + e = uncached_entry_next(e); + } + + /* Item was not found in the uncached list, search the cached list */ + + e = phdr_to_first_cached_entry(phdr, cacheline); + end = phdr_to_last_cached_entry(phdr); + + while (e > end) { + if (e->canary != SMEM_PRIVATE_CANARY) + goto invalid_canary; + if (le16_to_cpu(e->item) == item) { if (size != NULL) *size = le32_to_cpu(e->size) - le16_to_cpu(e->padding_data); - return entry_to_item(e); + return cached_entry_to_item(e); } - e = private_entry_next(e); + e = cached_entry_next(e, cacheline); } return ERR_PTR(-ENOENT); + +invalid_canary: + dev_err(smem->dev, "Found invalid canary in hosts %d:%d partition\n", + phdr->host0, phdr->host1); + + return ERR_PTR(-EINVAL); } /** @@ -496,23 +577,35 @@ static void *qcom_smem_get_private(struct qcom_smem *smem, */ void *qcom_smem_get(unsigned host, unsigned item, size_t *size) { + struct smem_partition_header *phdr; unsigned long flags; + size_t cacheln; int ret; void *ptr = ERR_PTR(-EPROBE_DEFER); if (!__smem) return ptr; + if (WARN_ON(item >= __smem->item_count)) + return ERR_PTR(-EINVAL); + ret = hwspin_lock_timeout_irqsave(__smem->hwlock, HWSPINLOCK_TIMEOUT, &flags); if (ret) return ERR_PTR(ret); - if (host < SMEM_HOST_COUNT && __smem->partitions[host]) - ptr = qcom_smem_get_private(__smem, host, item, size); - else + if (host < SMEM_HOST_COUNT && __smem->partitions[host]) { + phdr = __smem->partitions[host]; + cacheln = __smem->cacheline[host]; + ptr = qcom_smem_get_private(__smem, phdr, cacheln, item, size); + } else if (__smem->global_partition) { + phdr = __smem->global_partition; + cacheln = __smem->global_cacheline; + ptr = qcom_smem_get_private(__smem, phdr, cacheln, item, size); + } else { ptr = qcom_smem_get_global(__smem, item, size); + } hwspin_unlock_irqrestore(__smem->hwlock, &flags); @@ -541,6 +634,10 @@ int qcom_smem_get_free_space(unsigned host) phdr = __smem->partitions[host]; ret = le32_to_cpu(phdr->offset_free_cached) - le32_to_cpu(phdr->offset_free_uncached); + } else if (__smem->global_partition) { + phdr = __smem->global_partition; + ret = le32_to_cpu(phdr->offset_free_cached) - + le32_to_cpu(phdr->offset_free_uncached); } else { header = __smem->regions[0].virt_base; ret = le32_to_cpu(header->available); @@ -552,44 +649,131 @@ EXPORT_SYMBOL(qcom_smem_get_free_space); static int qcom_smem_get_sbl_version(struct qcom_smem *smem) { + struct smem_header *header; __le32 *versions; - size_t size; - versions = qcom_smem_get_global(smem, SMEM_ITEM_VERSION, &size); - if (IS_ERR(versions)) { - dev_err(smem->dev, "Unable to read the version item\n"); - return -ENOENT; - } - - if (size < sizeof(unsigned) * SMEM_MASTER_SBL_VERSION_INDEX) { - dev_err(smem->dev, "Version item is too small\n"); - return -EINVAL; - } + header = smem->regions[0].virt_base; + versions = header->version; return le32_to_cpu(versions[SMEM_MASTER_SBL_VERSION_INDEX]); } -static int qcom_smem_enumerate_partitions(struct qcom_smem *smem, - unsigned local_host) +static struct smem_ptable *qcom_smem_get_ptable(struct qcom_smem *smem) { - struct smem_partition_header *header; - struct smem_ptable_entry *entry; struct smem_ptable *ptable; - unsigned remote_host; - u32 version, host0, host1; - int i; + u32 version; ptable = smem->regions[0].virt_base + smem->regions[0].size - SZ_4K; if (memcmp(ptable->magic, SMEM_PTABLE_MAGIC, sizeof(ptable->magic))) - return 0; + return ERR_PTR(-ENOENT); version = le32_to_cpu(ptable->version); if (version != 1) { dev_err(smem->dev, "Unsupported partition header version %d\n", version); + return ERR_PTR(-EINVAL); + } + return ptable; +} + +static u32 qcom_smem_get_item_count(struct qcom_smem *smem) +{ + struct smem_ptable *ptable; + struct smem_info *info; + + ptable = qcom_smem_get_ptable(smem); + if (IS_ERR_OR_NULL(ptable)) + return SMEM_ITEM_COUNT; + + info = (struct smem_info *)&ptable->entry[ptable->num_entries]; + if (memcmp(info->magic, SMEM_INFO_MAGIC, sizeof(info->magic))) + return SMEM_ITEM_COUNT; + + return le16_to_cpu(info->num_items); +} + +static int qcom_smem_set_global_partition(struct qcom_smem *smem) +{ + struct smem_partition_header *header; + struct smem_ptable_entry *entry = NULL; + struct smem_ptable *ptable; + u32 host0, host1, size; + int i; + + ptable = qcom_smem_get_ptable(smem); + if (IS_ERR(ptable)) + return PTR_ERR(ptable); + + for (i = 0; i < le32_to_cpu(ptable->num_entries); i++) { + entry = &ptable->entry[i]; + host0 = le16_to_cpu(entry->host0); + host1 = le16_to_cpu(entry->host1); + + if (host0 == SMEM_GLOBAL_HOST && host0 == host1) + break; + } + + if (!entry) { + dev_err(smem->dev, "Missing entry for global partition\n"); + return -EINVAL; + } + + if (!le32_to_cpu(entry->offset) || !le32_to_cpu(entry->size)) { + dev_err(smem->dev, "Invalid entry for global partition\n"); + return -EINVAL; + } + + if (smem->global_partition) { + dev_err(smem->dev, "Already found the global partition\n"); + return -EINVAL; + } + + header = smem->regions[0].virt_base + le32_to_cpu(entry->offset); + host0 = le16_to_cpu(header->host0); + host1 = le16_to_cpu(header->host1); + + if (memcmp(header->magic, SMEM_PART_MAGIC, sizeof(header->magic))) { + dev_err(smem->dev, "Global partition has invalid magic\n"); + return -EINVAL; + } + + if (host0 != SMEM_GLOBAL_HOST && host1 != SMEM_GLOBAL_HOST) { + dev_err(smem->dev, "Global partition hosts are invalid\n"); + return -EINVAL; + } + + if (le32_to_cpu(header->size) != le32_to_cpu(entry->size)) { + dev_err(smem->dev, "Global partition has invalid size\n"); return -EINVAL; } + size = le32_to_cpu(header->offset_free_uncached); + if (size > le32_to_cpu(header->size)) { + dev_err(smem->dev, + "Global partition has invalid free pointer\n"); + return -EINVAL; + } + + smem->global_partition = header; + smem->global_cacheline = le32_to_cpu(entry->cacheline); + + return 0; +} + +static int qcom_smem_enumerate_partitions(struct qcom_smem *smem, + unsigned int local_host) +{ + struct smem_partition_header *header; + struct smem_ptable_entry *entry; + struct smem_ptable *ptable; + unsigned int remote_host; + u32 host0, host1; + int i; + + ptable = qcom_smem_get_ptable(smem); + if (IS_ERR(ptable)) + return PTR_ERR(ptable); + for (i = 0; i < le32_to_cpu(ptable->num_entries); i++) { entry = &ptable->entry[i]; host0 = le16_to_cpu(entry->host0); @@ -646,7 +830,7 @@ static int qcom_smem_enumerate_partitions(struct qcom_smem *smem, return -EINVAL; } - if (header->size != entry->size) { + if (le32_to_cpu(header->size) != le32_to_cpu(entry->size)) { dev_err(smem->dev, "Partition %d has invalid size\n", i); return -EINVAL; @@ -659,6 +843,7 @@ static int qcom_smem_enumerate_partitions(struct qcom_smem *smem, } smem->partitions[remote_host] = header; + smem->cacheline[remote_host] = le32_to_cpu(entry->cacheline); } return 0; @@ -729,13 +914,23 @@ static int qcom_smem_probe(struct platform_device *pdev) } version = qcom_smem_get_sbl_version(smem); - if (version >> 16 != SMEM_EXPECTED_VERSION) { + switch (version >> 16) { + case SMEM_GLOBAL_PART_VERSION: + ret = qcom_smem_set_global_partition(smem); + if (ret < 0) + return ret; + smem->item_count = qcom_smem_get_item_count(smem); + break; + case SMEM_GLOBAL_HEAP_VERSION: + smem->item_count = SMEM_ITEM_COUNT; + break; + default: dev_err(&pdev->dev, "Unsupported SMEM version 0x%x\n", version); return -EINVAL; } ret = qcom_smem_enumerate_partitions(smem, SMEM_HOST_APPS); - if (ret < 0) + if (ret < 0 && ret != -ENOENT) return ret; hwlock_id = of_hwspin_lock_get_id(pdev->dev.of_node, 0); diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig index 567414cb42ba..09550b1da56d 100644 --- a/drivers/soc/renesas/Kconfig +++ b/drivers/soc/renesas/Kconfig @@ -3,7 +3,8 @@ config SOC_RENESAS default y if ARCH_RENESAS select SOC_BUS select RST_RCAR if ARCH_RCAR_GEN1 || ARCH_RCAR_GEN2 || \ - ARCH_R8A7795 || ARCH_R8A7796 || ARCH_R8A77995 + ARCH_R8A7795 || ARCH_R8A7796 || ARCH_R8A77970 || \ + ARCH_R8A77995 select SYSC_R8A7743 if ARCH_R8A7743 select SYSC_R8A7745 if ARCH_R8A7745 select SYSC_R8A7779 if ARCH_R8A7779 @@ -13,6 +14,7 @@ config SOC_RENESAS select SYSC_R8A7794 if ARCH_R8A7794 select SYSC_R8A7795 if ARCH_R8A7795 select SYSC_R8A7796 if ARCH_R8A7796 + select SYSC_R8A77970 if ARCH_R8A77970 select SYSC_R8A77995 if ARCH_R8A77995 if SOC_RENESAS @@ -54,6 +56,10 @@ config SYSC_R8A7796 bool "R-Car M3-W System Controller support" if COMPILE_TEST select SYSC_RCAR +config SYSC_R8A77970 + bool "R-Car V3M System Controller support" if COMPILE_TEST + select SYSC_RCAR + config SYSC_R8A77995 bool "R-Car D3 System Controller support" if COMPILE_TEST select SYSC_RCAR diff --git a/drivers/soc/renesas/Makefile b/drivers/soc/renesas/Makefile index 763c03d80436..845d62a08ce1 100644 --- a/drivers/soc/renesas/Makefile +++ b/drivers/soc/renesas/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_SYSC_R8A7792) += r8a7792-sysc.o obj-$(CONFIG_SYSC_R8A7794) += r8a7794-sysc.o obj-$(CONFIG_SYSC_R8A7795) += r8a7795-sysc.o obj-$(CONFIG_SYSC_R8A7796) += r8a7796-sysc.o +obj-$(CONFIG_SYSC_R8A77970) += r8a77970-sysc.o obj-$(CONFIG_SYSC_R8A77995) += r8a77995-sysc.o # Family diff --git a/drivers/soc/renesas/r8a77970-sysc.c b/drivers/soc/renesas/r8a77970-sysc.c new file mode 100644 index 000000000000..8c614164718e --- /dev/null +++ b/drivers/soc/renesas/r8a77970-sysc.c @@ -0,0 +1,39 @@ +/* + * Renesas R-Car V3M System Controller + * + * Copyright (C) 2017 Cogent Embedded Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/bug.h> +#include <linux/kernel.h> + +#include <dt-bindings/power/r8a77970-sysc.h> + +#include "rcar-sysc.h" + +static const struct rcar_sysc_area r8a77970_areas[] __initconst = { + { "always-on", 0, 0, R8A77970_PD_ALWAYS_ON, -1, PD_ALWAYS_ON }, + { "ca53-scu", 0x140, 0, R8A77970_PD_CA53_SCU, R8A77970_PD_ALWAYS_ON, + PD_SCU }, + { "ca53-cpu0", 0x200, 0, R8A77970_PD_CA53_CPU0, R8A77970_PD_CA53_SCU, + PD_CPU_NOCR }, + { "ca53-cpu1", 0x200, 1, R8A77970_PD_CA53_CPU1, R8A77970_PD_CA53_SCU, + PD_CPU_NOCR }, + { "cr7", 0x240, 0, R8A77970_PD_CR7, R8A77970_PD_ALWAYS_ON }, + { "a3ir", 0x180, 0, R8A77970_PD_A3IR, R8A77970_PD_ALWAYS_ON }, + { "a2ir0", 0x400, 0, R8A77970_PD_A2IR0, R8A77970_PD_ALWAYS_ON }, + { "a2ir1", 0x400, 1, R8A77970_PD_A2IR1, R8A77970_PD_A2IR0 }, + { "a2ir2", 0x400, 2, R8A77970_PD_A2IR2, R8A77970_PD_A2IR0 }, + { "a2ir3", 0x400, 3, R8A77970_PD_A2IR3, R8A77970_PD_A2IR0 }, + { "a2sc0", 0x400, 4, R8A77970_PD_A2SC0, R8A77970_PD_ALWAYS_ON }, + { "a2sc1", 0x400, 5, R8A77970_PD_A2SC1, R8A77970_PD_A2SC0 }, +}; + +const struct rcar_sysc_info r8a77970_sysc_info __initconst = { + .areas = r8a77970_areas, + .num_areas = ARRAY_SIZE(r8a77970_areas), +}; diff --git a/drivers/soc/renesas/rcar-rst.c b/drivers/soc/renesas/rcar-rst.c index baa47014e96b..3316b028f231 100644 --- a/drivers/soc/renesas/rcar-rst.c +++ b/drivers/soc/renesas/rcar-rst.c @@ -41,6 +41,7 @@ static const struct of_device_id rcar_rst_matches[] __initconst = { /* R-Car Gen3 is handled like R-Car Gen2 */ { .compatible = "renesas,r8a7795-rst", .data = &rcar_rst_gen2 }, { .compatible = "renesas,r8a7796-rst", .data = &rcar_rst_gen2 }, + { .compatible = "renesas,r8a77970-rst", .data = &rcar_rst_gen2 }, { .compatible = "renesas,r8a77995-rst", .data = &rcar_rst_gen2 }, { /* sentinel */ } }; diff --git a/drivers/soc/renesas/rcar-sysc.c b/drivers/soc/renesas/rcar-sysc.c index c8406e81640f..55a47e509e49 100644 --- a/drivers/soc/renesas/rcar-sysc.c +++ b/drivers/soc/renesas/rcar-sysc.c @@ -284,6 +284,9 @@ static const struct of_device_id rcar_sysc_matches[] = { #ifdef CONFIG_SYSC_R8A7796 { .compatible = "renesas,r8a7796-sysc", .data = &r8a7796_sysc_info }, #endif +#ifdef CONFIG_SYSC_R8A77970 + { .compatible = "renesas,r8a77970-sysc", .data = &r8a77970_sysc_info }, +#endif #ifdef CONFIG_SYSC_R8A77995 { .compatible = "renesas,r8a77995-sysc", .data = &r8a77995_sysc_info }, #endif diff --git a/drivers/soc/renesas/rcar-sysc.h b/drivers/soc/renesas/rcar-sysc.h index 2f524922c4d2..9d9daf9eb91b 100644 --- a/drivers/soc/renesas/rcar-sysc.h +++ b/drivers/soc/renesas/rcar-sysc.h @@ -58,6 +58,7 @@ extern const struct rcar_sysc_info r8a7792_sysc_info; extern const struct rcar_sysc_info r8a7794_sysc_info; extern const struct rcar_sysc_info r8a7795_sysc_info; extern const struct rcar_sysc_info r8a7796_sysc_info; +extern const struct rcar_sysc_info r8a77970_sysc_info; extern const struct rcar_sysc_info r8a77995_sysc_info; diff --git a/drivers/soc/renesas/renesas-soc.c b/drivers/soc/renesas/renesas-soc.c index 90d6b7a4340a..9f4ee2567c72 100644 --- a/drivers/soc/renesas/renesas-soc.c +++ b/drivers/soc/renesas/renesas-soc.c @@ -144,6 +144,11 @@ static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = { .id = 0x52, }; +static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = { + .family = &fam_rcar_gen3, + .id = 0x54, +}; + static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = { .family = &fam_rcar_gen3, .id = 0x58, @@ -204,6 +209,9 @@ static const struct of_device_id renesas_socs[] __initconst = { #ifdef CONFIG_ARCH_R8A7796 { .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w }, #endif +#ifdef CONFIG_ARCH_R8A77970 + { .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m }, +#endif #ifdef CONFIG_ARCH_R8A77995 { .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 }, #endif diff --git a/drivers/soc/samsung/exynos-pmu.c b/drivers/soc/samsung/exynos-pmu.c index bd4a76f27bc2..938f8ccfcb74 100644 --- a/drivers/soc/samsung/exynos-pmu.c +++ b/drivers/soc/samsung/exynos-pmu.c @@ -60,12 +60,6 @@ void exynos_sys_powerdown_conf(enum sys_powerdown mode) if (pmu_data->powerdown_conf_extra) pmu_data->powerdown_conf_extra(mode); - - if (pmu_data->pmu_config_extra) { - for (i = 0; pmu_data->pmu_config_extra[i].offset != PMU_TABLE_END; i++) - pmu_raw_writel(pmu_data->pmu_config_extra[i].val[mode], - pmu_data->pmu_config_extra[i].offset); - } } /* @@ -89,9 +83,6 @@ static const struct of_device_id exynos_pmu_of_device_ids[] = { .compatible = "samsung,exynos4210-pmu", .data = exynos_pmu_data_arm_ptr(exynos4210_pmu_data), }, { - .compatible = "samsung,exynos4212-pmu", - .data = exynos_pmu_data_arm_ptr(exynos4212_pmu_data), - }, { .compatible = "samsung,exynos4412-pmu", .data = exynos_pmu_data_arm_ptr(exynos4412_pmu_data), }, { diff --git a/drivers/soc/samsung/exynos-pmu.h b/drivers/soc/samsung/exynos-pmu.h index 40d4229abfb5..86b3f2f8966d 100644 --- a/drivers/soc/samsung/exynos-pmu.h +++ b/drivers/soc/samsung/exynos-pmu.h @@ -23,7 +23,6 @@ struct exynos_pmu_conf { struct exynos_pmu_data { const struct exynos_pmu_conf *pmu_config; - const struct exynos_pmu_conf *pmu_config_extra; void (*pmu_init)(void); void (*powerdown_conf)(enum sys_powerdown); @@ -36,7 +35,6 @@ extern void __iomem *pmu_base_addr; /* list of all exported SoC specific data */ extern const struct exynos_pmu_data exynos3250_pmu_data; extern const struct exynos_pmu_data exynos4210_pmu_data; -extern const struct exynos_pmu_data exynos4212_pmu_data; extern const struct exynos_pmu_data exynos4412_pmu_data; extern const struct exynos_pmu_data exynos5250_pmu_data; extern const struct exynos_pmu_data exynos5420_pmu_data; diff --git a/drivers/soc/samsung/exynos4-pmu.c b/drivers/soc/samsung/exynos4-pmu.c index bc4fa73bed11..5dbfe4e31f4c 100644 --- a/drivers/soc/samsung/exynos4-pmu.c +++ b/drivers/soc/samsung/exynos4-pmu.c @@ -90,7 +90,7 @@ static const struct exynos_pmu_conf exynos4210_pmu_config[] = { { PMU_TABLE_END,}, }; -static const struct exynos_pmu_conf exynos4x12_pmu_config[] = { +static const struct exynos_pmu_conf exynos4412_pmu_config[] = { { S5P_ARM_CORE0_LOWPWR, { 0x0, 0x0, 0x2 } }, { S5P_DIS_IRQ_CORE0, { 0x0, 0x0, 0x0 } }, { S5P_DIS_IRQ_CENTRAL0, { 0x0, 0x0, 0x0 } }, @@ -195,10 +195,6 @@ static const struct exynos_pmu_conf exynos4x12_pmu_config[] = { { S5P_GPS_ALIVE_LOWPWR, { 0x7, 0x0, 0x0 } }, { S5P_CMU_SYSCLK_ISP_LOWPWR, { 0x1, 0x0, 0x0 } }, { S5P_CMU_SYSCLK_GPS_LOWPWR, { 0x1, 0x0, 0x0 } }, - { PMU_TABLE_END,}, -}; - -static const struct exynos_pmu_conf exynos4412_pmu_config[] = { { S5P_ARM_CORE2_LOWPWR, { 0x0, 0x0, 0x2 } }, { S5P_DIS_IRQ_CORE2, { 0x0, 0x0, 0x0 } }, { S5P_DIS_IRQ_CENTRAL2, { 0x0, 0x0, 0x0 } }, @@ -212,11 +208,6 @@ const struct exynos_pmu_data exynos4210_pmu_data = { .pmu_config = exynos4210_pmu_config, }; -const struct exynos_pmu_data exynos4212_pmu_data = { - .pmu_config = exynos4x12_pmu_config, -}; - const struct exynos_pmu_data exynos4412_pmu_data = { - .pmu_config = exynos4x12_pmu_config, - .pmu_config_extra = exynos4412_pmu_config, + .pmu_config = exynos4412_pmu_config, }; diff --git a/drivers/soc/tegra/powergate-bpmp.c b/drivers/soc/tegra/powergate-bpmp.c index 8fc356039401..82c7e27cd8bb 100644 --- a/drivers/soc/tegra/powergate-bpmp.c +++ b/drivers/soc/tegra/powergate-bpmp.c @@ -42,6 +42,7 @@ static int tegra_bpmp_powergate_set_state(struct tegra_bpmp *bpmp, { struct mrq_pg_request request; struct tegra_bpmp_message msg; + int err; memset(&request, 0, sizeof(request)); request.cmd = CMD_PG_SET_STATE; @@ -53,7 +54,13 @@ static int tegra_bpmp_powergate_set_state(struct tegra_bpmp *bpmp, msg.tx.data = &request; msg.tx.size = sizeof(request); - return tegra_bpmp_transfer(bpmp, &msg); + err = tegra_bpmp_transfer(bpmp, &msg); + if (err < 0) + return err; + else if (msg.rx.ret < 0) + return -EINVAL; + + return 0; } static int tegra_bpmp_powergate_get_state(struct tegra_bpmp *bpmp, @@ -80,6 +87,8 @@ static int tegra_bpmp_powergate_get_state(struct tegra_bpmp *bpmp, err = tegra_bpmp_transfer(bpmp, &msg); if (err < 0) return PG_STATE_OFF; + else if (msg.rx.ret < 0) + return -EINVAL; return response.get_state.state; } @@ -106,6 +115,8 @@ static int tegra_bpmp_powergate_get_max_id(struct tegra_bpmp *bpmp) err = tegra_bpmp_transfer(bpmp, &msg); if (err < 0) return err; + else if (msg.rx.ret < 0) + return -EINVAL; return response.get_max_id.max_id; } @@ -132,7 +143,7 @@ static char *tegra_bpmp_powergate_get_name(struct tegra_bpmp *bpmp, msg.rx.size = sizeof(response); err = tegra_bpmp_transfer(bpmp, &msg); - if (err < 0) + if (err < 0 || msg.rx.ret < 0) return NULL; return kstrdup(response.get_name.name, GFP_KERNEL); diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 195cd08fbc30..610344eb3e03 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -55,7 +55,7 @@ obj-$(CONFIG_INTEL_BXT_PMIC_THERMAL) += intel_bxt_pmic_thermal.o obj-$(CONFIG_INTEL_PCH_THERMAL) += intel_pch_thermal.o obj-$(CONFIG_ST_THERMAL) += st/ obj-$(CONFIG_QCOM_TSENS) += qcom/ -obj-$(CONFIG_TEGRA_SOCTHERM) += tegra/ +obj-y += tegra/ obj-$(CONFIG_HISI_THERMAL) += hisi_thermal.o obj-$(CONFIG_MTK_THERMAL) += mtk_thermal.o obj-$(CONFIG_GENERIC_ADC_THERMAL) += thermal-generic-adc.o diff --git a/drivers/thermal/tegra/Kconfig b/drivers/thermal/tegra/Kconfig index cec586ec7e4b..f8740f7852e3 100644 --- a/drivers/thermal/tegra/Kconfig +++ b/drivers/thermal/tegra/Kconfig @@ -10,4 +10,11 @@ config TEGRA_SOCTHERM zones to manage temperatures. This option is also required for the emergency thermal reset (thermtrip) feature to function. +config TEGRA_BPMP_THERMAL + tristate "Tegra BPMP thermal sensing" + depends on TEGRA_BPMP || COMPILE_TEST + help + Enable this option for support for sensing system temperature of NVIDIA + Tegra systems-on-chip with the BPMP coprocessor (Tegra186). + endmenu diff --git a/drivers/thermal/tegra/Makefile b/drivers/thermal/tegra/Makefile index 8a3f221f17c1..0f2b66edf0d2 100644 --- a/drivers/thermal/tegra/Makefile +++ b/drivers/thermal/tegra/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 -obj-$(CONFIG_TEGRA_SOCTHERM) += tegra-soctherm.o +obj-$(CONFIG_TEGRA_SOCTHERM) += tegra-soctherm.o +obj-$(CONFIG_TEGRA_BPMP_THERMAL) += tegra-bpmp-thermal.o tegra-soctherm-y := soctherm.o soctherm-fuse.o tegra-soctherm-$(CONFIG_ARCH_TEGRA_124_SOC) += tegra124-soctherm.o diff --git a/drivers/thermal/tegra/tegra-bpmp-thermal.c b/drivers/thermal/tegra/tegra-bpmp-thermal.c new file mode 100644 index 000000000000..b0980dbca3b3 --- /dev/null +++ b/drivers/thermal/tegra/tegra-bpmp-thermal.c @@ -0,0 +1,263 @@ +/* + * Copyright (c) 2015-2017, NVIDIA CORPORATION. All rights reserved. + * + * Author: + * Mikko Perttunen <mperttunen@nvidia.com> + * Aapo Vienamo <avienamo@nvidia.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/err.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/thermal.h> +#include <linux/workqueue.h> + +#include <soc/tegra/bpmp.h> +#include <soc/tegra/bpmp-abi.h> + +struct tegra_bpmp_thermal_zone { + struct tegra_bpmp_thermal *tegra; + struct thermal_zone_device *tzd; + struct work_struct tz_device_update_work; + unsigned int idx; +}; + +struct tegra_bpmp_thermal { + struct device *dev; + struct tegra_bpmp *bpmp; + unsigned int num_zones; + struct tegra_bpmp_thermal_zone **zones; +}; + +static int tegra_bpmp_thermal_get_temp(void *data, int *out_temp) +{ + struct tegra_bpmp_thermal_zone *zone = data; + struct mrq_thermal_host_to_bpmp_request req; + union mrq_thermal_bpmp_to_host_response reply; + struct tegra_bpmp_message msg; + int err; + + memset(&req, 0, sizeof(req)); + req.type = CMD_THERMAL_GET_TEMP; + req.get_temp.zone = zone->idx; + + memset(&msg, 0, sizeof(msg)); + msg.mrq = MRQ_THERMAL; + msg.tx.data = &req; + msg.tx.size = sizeof(req); + msg.rx.data = &reply; + msg.rx.size = sizeof(reply); + + err = tegra_bpmp_transfer(zone->tegra->bpmp, &msg); + if (err) + return err; + + *out_temp = reply.get_temp.temp; + + return 0; +} + +static int tegra_bpmp_thermal_set_trips(void *data, int low, int high) +{ + struct tegra_bpmp_thermal_zone *zone = data; + struct mrq_thermal_host_to_bpmp_request req; + struct tegra_bpmp_message msg; + + memset(&req, 0, sizeof(req)); + req.type = CMD_THERMAL_SET_TRIP; + req.set_trip.zone = zone->idx; + req.set_trip.enabled = true; + req.set_trip.low = low; + req.set_trip.high = high; + + memset(&msg, 0, sizeof(msg)); + msg.mrq = MRQ_THERMAL; + msg.tx.data = &req; + msg.tx.size = sizeof(req); + + return tegra_bpmp_transfer(zone->tegra->bpmp, &msg); +} + +static void tz_device_update_work_fn(struct work_struct *work) +{ + struct tegra_bpmp_thermal_zone *zone; + + zone = container_of(work, struct tegra_bpmp_thermal_zone, + tz_device_update_work); + + thermal_zone_device_update(zone->tzd, THERMAL_TRIP_VIOLATED); +} + +static void bpmp_mrq_thermal(unsigned int mrq, struct tegra_bpmp_channel *ch, + void *data) +{ + struct mrq_thermal_bpmp_to_host_request *req; + struct tegra_bpmp_thermal *tegra = data; + int i; + + req = (struct mrq_thermal_bpmp_to_host_request *)ch->ib->data; + + if (req->type != CMD_THERMAL_HOST_TRIP_REACHED) { + dev_err(tegra->dev, "%s: invalid request type: %d\n", + __func__, req->type); + tegra_bpmp_mrq_return(ch, -EINVAL, NULL, 0); + return; + } + + for (i = 0; i < tegra->num_zones; ++i) { + if (tegra->zones[i]->idx != req->host_trip_reached.zone) + continue; + + schedule_work(&tegra->zones[i]->tz_device_update_work); + tegra_bpmp_mrq_return(ch, 0, NULL, 0); + return; + } + + dev_err(tegra->dev, "%s: invalid thermal zone: %d\n", __func__, + req->host_trip_reached.zone); + tegra_bpmp_mrq_return(ch, -EINVAL, NULL, 0); +} + +static int tegra_bpmp_thermal_get_num_zones(struct tegra_bpmp *bpmp, + int *num_zones) +{ + struct mrq_thermal_host_to_bpmp_request req; + union mrq_thermal_bpmp_to_host_response reply; + struct tegra_bpmp_message msg; + int err; + + memset(&req, 0, sizeof(req)); + req.type = CMD_THERMAL_GET_NUM_ZONES; + + memset(&msg, 0, sizeof(msg)); + msg.mrq = MRQ_THERMAL; + msg.tx.data = &req; + msg.tx.size = sizeof(req); + msg.rx.data = &reply; + msg.rx.size = sizeof(reply); + + err = tegra_bpmp_transfer(bpmp, &msg); + if (err) + return err; + + *num_zones = reply.get_num_zones.num; + + return 0; +} + +static const struct thermal_zone_of_device_ops tegra_bpmp_of_thermal_ops = { + .get_temp = tegra_bpmp_thermal_get_temp, + .set_trips = tegra_bpmp_thermal_set_trips, +}; + +static int tegra_bpmp_thermal_probe(struct platform_device *pdev) +{ + struct tegra_bpmp *bpmp = dev_get_drvdata(pdev->dev.parent); + struct tegra_bpmp_thermal *tegra; + struct thermal_zone_device *tzd; + unsigned int i, max_num_zones; + int err; + + tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL); + if (!tegra) + return -ENOMEM; + + tegra->dev = &pdev->dev; + tegra->bpmp = bpmp; + + err = tegra_bpmp_thermal_get_num_zones(bpmp, &max_num_zones); + if (err) { + dev_err(&pdev->dev, "failed to get the number of zones: %d\n", + err); + return err; + } + + tegra->zones = devm_kcalloc(&pdev->dev, max_num_zones, + sizeof(*tegra->zones), GFP_KERNEL); + if (!tegra->zones) + return -ENOMEM; + + for (i = 0; i < max_num_zones; ++i) { + struct tegra_bpmp_thermal_zone *zone; + int temp; + + zone = devm_kzalloc(&pdev->dev, sizeof(*zone), GFP_KERNEL); + if (!zone) + return -ENOMEM; + + zone->idx = i; + zone->tegra = tegra; + + err = tegra_bpmp_thermal_get_temp(zone, &temp); + if (err < 0) { + devm_kfree(&pdev->dev, zone); + continue; + } + + tzd = devm_thermal_zone_of_sensor_register( + &pdev->dev, i, zone, &tegra_bpmp_of_thermal_ops); + if (IS_ERR(tzd)) { + if (PTR_ERR(tzd) == -EPROBE_DEFER) + return -EPROBE_DEFER; + devm_kfree(&pdev->dev, zone); + continue; + } + + zone->tzd = tzd; + INIT_WORK(&zone->tz_device_update_work, + tz_device_update_work_fn); + + tegra->zones[tegra->num_zones++] = zone; + } + + err = tegra_bpmp_request_mrq(bpmp, MRQ_THERMAL, bpmp_mrq_thermal, + tegra); + if (err) { + dev_err(&pdev->dev, "failed to register mrq handler: %d\n", + err); + return err; + } + + platform_set_drvdata(pdev, tegra); + + return 0; +} + +static int tegra_bpmp_thermal_remove(struct platform_device *pdev) +{ + struct tegra_bpmp_thermal *tegra = platform_get_drvdata(pdev); + + tegra_bpmp_free_mrq(tegra->bpmp, MRQ_THERMAL, tegra); + + return 0; +} + +static const struct of_device_id tegra_bpmp_thermal_of_match[] = { + { .compatible = "nvidia,tegra186-bpmp-thermal" }, + { }, +}; +MODULE_DEVICE_TABLE(of, tegra_bpmp_thermal_of_match); + +static struct platform_driver tegra_bpmp_thermal_driver = { + .probe = tegra_bpmp_thermal_probe, + .remove = tegra_bpmp_thermal_remove, + .driver = { + .name = "tegra-bpmp-thermal", + .of_match_table = tegra_bpmp_thermal_of_match, + }, +}; +module_platform_driver(tegra_bpmp_thermal_driver); + +MODULE_AUTHOR("Mikko Perttunen <mperttunen@nvidia.com>"); +MODULE_DESCRIPTION("NVIDIA Tegra BPMP thermal sensor driver"); +MODULE_LICENSE("GPL v2"); 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