From fc05d5a30dc19dd4c6d161e551719a8c597c7890 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 4 Oct 2012 09:28:49 +0200 Subject: mtd: delete nomadik_nand driver The nomadik_nand driver is really just a subset of the FSMC NAND driver, and there are no users anymore so let's delete it. Signed-off-by: Linus Walleij Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Artem Bityutskiy --- include/linux/platform_data/mtd-nomadik-nand.h | 16 ---------------- 1 file changed, 16 deletions(-) delete mode 100644 include/linux/platform_data/mtd-nomadik-nand.h (limited to 'include/linux/platform_data') diff --git a/include/linux/platform_data/mtd-nomadik-nand.h b/include/linux/platform_data/mtd-nomadik-nand.h deleted file mode 100644 index c3c8254c22a5..000000000000 --- a/include/linux/platform_data/mtd-nomadik-nand.h +++ /dev/null @@ -1,16 +0,0 @@ -#ifndef __ASM_ARCH_NAND_H -#define __ASM_ARCH_NAND_H - -struct nomadik_nand_platform_data { - struct mtd_partition *parts; - int nparts; - int options; - int (*init) (void); - int (*exit) (void); -}; - -#define NAND_IO_DATA 0x40000000 -#define NAND_IO_CMD 0x40800000 -#define NAND_IO_ADDR 0x41000000 - -#endif /* __ASM_ARCH_NAND_H */ -- cgit v1.2.3 From 0857ba3c24c308f42a242fe8a1894772750230ce Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Sun, 18 Nov 2012 18:36:19 +0200 Subject: i2c: i2c-cbus-gpio: introduce driver Add i2c driver to enable access to devices behind CBUS on Nokia Internet Tablets. The patch also adds CBUS I2C configuration for N8x0 which is one of the users of this driver. Acked-by: Felipe Balbi Acked-by: Tony Lindgren Signed-off-by: Aaro Koskinen Signed-off-by: Wolfram Sang --- .../devicetree/bindings/i2c/i2c-cbus-gpio.txt | 27 ++ arch/arm/mach-omap2/board-n8x0.c | 42 +++ drivers/i2c/busses/Kconfig | 10 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-cbus-gpio.c | 300 +++++++++++++++++++++ include/linux/platform_data/i2c-cbus-gpio.h | 27 ++ 6 files changed, 407 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-cbus-gpio.txt create mode 100644 drivers/i2c/busses/i2c-cbus-gpio.c create mode 100644 include/linux/platform_data/i2c-cbus-gpio.h (limited to 'include/linux/platform_data') diff --git a/Documentation/devicetree/bindings/i2c/i2c-cbus-gpio.txt b/Documentation/devicetree/bindings/i2c/i2c-cbus-gpio.txt new file mode 100644 index 000000000000..8ce9cd2855b5 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-cbus-gpio.txt @@ -0,0 +1,27 @@ +Device tree bindings for i2c-cbus-gpio driver + +Required properties: + - compatible = "i2c-cbus-gpio"; + - gpios: clk, dat, sel + - #address-cells = <1>; + - #size-cells = <0>; + +Optional properties: + - child nodes conforming to i2c bus binding + +Example: + +i2c@0 { + compatible = "i2c-cbus-gpio"; + gpios = <&gpio 66 0 /* clk */ + &gpio 65 0 /* dat */ + &gpio 64 0 /* sel */ + >; + #address-cells = <1>; + #size-cells = <0>; + + retu-mfd: retu@1 { + compatible = "retu-mfd"; + reg = <0x1>; + }; +}; diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c index d95f727ca39a..bbfd74263c42 100644 --- a/arch/arm/mach-omap2/board-n8x0.c +++ b/arch/arm/mach-omap2/board-n8x0.c @@ -16,10 +16,12 @@ #include #include #include +#include #include #include #include #include +#include #include #include #include @@ -39,6 +41,45 @@ #define TUSB6010_GPIO_ENABLE 0 #define TUSB6010_DMACHAN 0x3f +#if defined(CONFIG_I2C_CBUS_GPIO) || defined(CONFIG_I2C_CBUS_GPIO_MODULE) +static struct i2c_cbus_platform_data n8x0_cbus_data = { + .clk_gpio = 66, + .dat_gpio = 65, + .sel_gpio = 64, +}; + +static struct platform_device n8x0_cbus_device = { + .name = "i2c-cbus-gpio", + .id = 3, + .dev = { + .platform_data = &n8x0_cbus_data, + }, +}; + +static struct i2c_board_info n8x0_i2c_board_info_3[] __initdata = { + { + I2C_BOARD_INFO("retu-mfd", 0x01), + }, +}; + +static void __init n8x0_cbus_init(void) +{ + const int retu_irq_gpio = 108; + + if (gpio_request_one(retu_irq_gpio, GPIOF_IN, "Retu IRQ")) + return; + irq_set_irq_type(gpio_to_irq(retu_irq_gpio), IRQ_TYPE_EDGE_RISING); + n8x0_i2c_board_info_3[0].irq = gpio_to_irq(retu_irq_gpio); + i2c_register_board_info(3, n8x0_i2c_board_info_3, + ARRAY_SIZE(n8x0_i2c_board_info_3)); + platform_device_register(&n8x0_cbus_device); +} +#else /* CONFIG_I2C_CBUS_GPIO */ +static void __init n8x0_cbus_init(void) +{ +} +#endif /* CONFIG_I2C_CBUS_GPIO */ + #if defined(CONFIG_USB_MUSB_TUSB6010) || defined(CONFIG_USB_MUSB_TUSB6010_MODULE) /* * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and @@ -677,6 +718,7 @@ static void __init n8x0_init_machine(void) gpmc_onenand_init(board_onenand_data); n8x0_mmc_init(); n8x0_usb_init(); + n8x0_cbus_init(); } MACHINE_START(NOKIA_N800, "Nokia N800") diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index e9df4612b7eb..e949edf644d4 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -337,6 +337,16 @@ config I2C_BLACKFIN_TWI_CLK_KHZ help The unit of the TWI clock is kHz. +config I2C_CBUS_GPIO + tristate "CBUS I2C driver" + depends on GENERIC_GPIO + help + Support for CBUS access using I2C API. Mostly relevant for Nokia + Internet Tablets (770, N800 and N810). + + This driver can also be built as a module. If so, the module + will be called i2c-cbus-gpio. + config I2C_CPM tristate "Freescale CPM1 or CPM2 (MPC8xx/826x)" depends on (CPM1 || CPM2) && OF_I2C diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile index 395b516ffa08..f9e3e0b5c827 100644 --- a/drivers/i2c/busses/Makefile +++ b/drivers/i2c/busses/Makefile @@ -31,6 +31,7 @@ obj-$(CONFIG_I2C_POWERMAC) += i2c-powermac.o obj-$(CONFIG_I2C_AT91) += i2c-at91.o obj-$(CONFIG_I2C_AU1550) += i2c-au1550.o obj-$(CONFIG_I2C_BLACKFIN_TWI) += i2c-bfin-twi.o +obj-$(CONFIG_I2C_CBUS_GPIO) += i2c-cbus-gpio.o obj-$(CONFIG_I2C_CPM) += i2c-cpm.o obj-$(CONFIG_I2C_DAVINCI) += i2c-davinci.o obj-$(CONFIG_I2C_DESIGNWARE_CORE) += i2c-designware-core.o diff --git a/drivers/i2c/busses/i2c-cbus-gpio.c b/drivers/i2c/busses/i2c-cbus-gpio.c new file mode 100644 index 000000000000..98386d659318 --- /dev/null +++ b/drivers/i2c/busses/i2c-cbus-gpio.c @@ -0,0 +1,300 @@ +/* + * CBUS I2C driver for Nokia Internet Tablets. + * + * Copyright (C) 2004-2010 Nokia Corporation + * + * Based on code written by Juha Yrjölä, David Weinehall, Mikko Ylinen and + * Felipe Balbi. Converted to I2C driver by Aaro Koskinen. + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Bit counts are derived from Nokia implementation. These should be checked + * if other CBUS implementations appear. + */ +#define CBUS_ADDR_BITS 3 +#define CBUS_REG_BITS 5 + +struct cbus_host { + spinlock_t lock; /* host lock */ + struct device *dev; + int clk_gpio; + int dat_gpio; + int sel_gpio; +}; + +/** + * cbus_send_bit - sends one bit over the bus + * @host: the host we're using + * @bit: one bit of information to send + */ +static void cbus_send_bit(struct cbus_host *host, unsigned bit) +{ + gpio_set_value(host->dat_gpio, bit ? 1 : 0); + gpio_set_value(host->clk_gpio, 1); + gpio_set_value(host->clk_gpio, 0); +} + +/** + * cbus_send_data - sends @len amount of data over the bus + * @host: the host we're using + * @data: the data to send + * @len: size of the transfer + */ +static void cbus_send_data(struct cbus_host *host, unsigned data, unsigned len) +{ + int i; + + for (i = len; i > 0; i--) + cbus_send_bit(host, data & (1 << (i - 1))); +} + +/** + * cbus_receive_bit - receives one bit from the bus + * @host: the host we're using + */ +static int cbus_receive_bit(struct cbus_host *host) +{ + int ret; + + gpio_set_value(host->clk_gpio, 1); + ret = gpio_get_value(host->dat_gpio); + gpio_set_value(host->clk_gpio, 0); + return ret; +} + +/** + * cbus_receive_word - receives 16-bit word from the bus + * @host: the host we're using + */ +static int cbus_receive_word(struct cbus_host *host) +{ + int ret = 0; + int i; + + for (i = 16; i > 0; i--) { + int bit = cbus_receive_bit(host); + + if (bit < 0) + return bit; + + if (bit) + ret |= 1 << (i - 1); + } + return ret; +} + +/** + * cbus_transfer - transfers data over the bus + * @host: the host we're using + * @rw: read/write flag + * @dev: device address + * @reg: register address + * @data: if @rw == I2C_SBUS_WRITE data to send otherwise 0 + */ +static int cbus_transfer(struct cbus_host *host, char rw, unsigned dev, + unsigned reg, unsigned data) +{ + unsigned long flags; + int ret; + + /* We don't want interrupts disturbing our transfer */ + spin_lock_irqsave(&host->lock, flags); + + /* Reset state and start of transfer, SEL stays down during transfer */ + gpio_set_value(host->sel_gpio, 0); + + /* Set the DAT pin to output */ + gpio_direction_output(host->dat_gpio, 1); + + /* Send the device address */ + cbus_send_data(host, dev, CBUS_ADDR_BITS); + + /* Send the rw flag */ + cbus_send_bit(host, rw == I2C_SMBUS_READ); + + /* Send the register address */ + cbus_send_data(host, reg, CBUS_REG_BITS); + + if (rw == I2C_SMBUS_WRITE) { + cbus_send_data(host, data, 16); + ret = 0; + } else { + ret = gpio_direction_input(host->dat_gpio); + if (ret) { + dev_dbg(host->dev, "failed setting direction\n"); + goto out; + } + gpio_set_value(host->clk_gpio, 1); + + ret = cbus_receive_word(host); + if (ret < 0) { + dev_dbg(host->dev, "failed receiving data\n"); + goto out; + } + } + + /* Indicate end of transfer, SEL goes up until next transfer */ + gpio_set_value(host->sel_gpio, 1); + gpio_set_value(host->clk_gpio, 1); + gpio_set_value(host->clk_gpio, 0); + +out: + spin_unlock_irqrestore(&host->lock, flags); + + return ret; +} + +static int cbus_i2c_smbus_xfer(struct i2c_adapter *adapter, + u16 addr, + unsigned short flags, + char read_write, + u8 command, + int size, + union i2c_smbus_data *data) +{ + struct cbus_host *chost = i2c_get_adapdata(adapter); + int ret; + + if (size != I2C_SMBUS_WORD_DATA) + return -EINVAL; + + ret = cbus_transfer(chost, read_write == I2C_SMBUS_READ, addr, + command, data->word); + if (ret < 0) + return ret; + + if (read_write == I2C_SMBUS_READ) + data->word = ret; + + return 0; +} + +static u32 cbus_i2c_func(struct i2c_adapter *adapter) +{ + return I2C_FUNC_SMBUS_READ_WORD_DATA | I2C_FUNC_SMBUS_WRITE_WORD_DATA; +} + +static const struct i2c_algorithm cbus_i2c_algo = { + .smbus_xfer = cbus_i2c_smbus_xfer, + .functionality = cbus_i2c_func, +}; + +static int cbus_i2c_remove(struct platform_device *pdev) +{ + struct i2c_adapter *adapter = platform_get_drvdata(pdev); + + return i2c_del_adapter(adapter); +} + +static int cbus_i2c_probe(struct platform_device *pdev) +{ + struct i2c_adapter *adapter; + struct cbus_host *chost; + int ret; + + adapter = devm_kzalloc(&pdev->dev, sizeof(struct i2c_adapter), + GFP_KERNEL); + if (!adapter) + return -ENOMEM; + + chost = devm_kzalloc(&pdev->dev, sizeof(*chost), GFP_KERNEL); + if (!chost) + return -ENOMEM; + + if (pdev->dev.of_node) { + struct device_node *dnode = pdev->dev.of_node; + if (of_gpio_count(dnode) != 3) + return -ENODEV; + chost->clk_gpio = of_get_gpio(dnode, 0); + chost->dat_gpio = of_get_gpio(dnode, 1); + chost->sel_gpio = of_get_gpio(dnode, 2); + } else if (pdev->dev.platform_data) { + struct i2c_cbus_platform_data *pdata = pdev->dev.platform_data; + chost->clk_gpio = pdata->clk_gpio; + chost->dat_gpio = pdata->dat_gpio; + chost->sel_gpio = pdata->sel_gpio; + } else { + return -ENODEV; + } + + adapter->owner = THIS_MODULE; + adapter->class = I2C_CLASS_HWMON; + adapter->dev.parent = &pdev->dev; + adapter->nr = pdev->id; + adapter->timeout = HZ; + adapter->algo = &cbus_i2c_algo; + strlcpy(adapter->name, "CBUS I2C adapter", sizeof(adapter->name)); + + spin_lock_init(&chost->lock); + chost->dev = &pdev->dev; + + ret = devm_gpio_request_one(&pdev->dev, chost->clk_gpio, + GPIOF_OUT_INIT_LOW, "CBUS clk"); + if (ret) + return ret; + + ret = devm_gpio_request_one(&pdev->dev, chost->dat_gpio, GPIOF_IN, + "CBUS data"); + if (ret) + return ret; + + ret = devm_gpio_request_one(&pdev->dev, chost->sel_gpio, + GPIOF_OUT_INIT_HIGH, "CBUS sel"); + if (ret) + return ret; + + i2c_set_adapdata(adapter, chost); + platform_set_drvdata(pdev, adapter); + + return i2c_add_numbered_adapter(adapter); +} + +#if defined(CONFIG_OF) +static const struct of_device_id i2c_cbus_dt_ids[] = { + { .compatible = "i2c-cbus-gpio", }, + { } +}; +MODULE_DEVICE_TABLE(of, i2c_cbus_dt_ids); +#endif + +static struct platform_driver cbus_i2c_driver = { + .probe = cbus_i2c_probe, + .remove = cbus_i2c_remove, + .driver = { + .owner = THIS_MODULE, + .name = "i2c-cbus-gpio", + }, +}; +module_platform_driver(cbus_i2c_driver); + +MODULE_ALIAS("platform:i2c-cbus-gpio"); +MODULE_DESCRIPTION("CBUS I2C driver"); +MODULE_AUTHOR("Juha Yrjölä"); +MODULE_AUTHOR("David Weinehall"); +MODULE_AUTHOR("Mikko Ylinen"); +MODULE_AUTHOR("Felipe Balbi"); +MODULE_AUTHOR("Aaro Koskinen "); +MODULE_LICENSE("GPL"); diff --git a/include/linux/platform_data/i2c-cbus-gpio.h b/include/linux/platform_data/i2c-cbus-gpio.h new file mode 100644 index 000000000000..6faa992a9502 --- /dev/null +++ b/include/linux/platform_data/i2c-cbus-gpio.h @@ -0,0 +1,27 @@ +/* + * i2c-cbus-gpio.h - CBUS I2C platform_data definition + * + * Copyright (C) 2004-2009 Nokia Corporation + * + * Written by Felipe Balbi and Aaro Koskinen. + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + * + * 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 __INCLUDE_LINUX_I2C_CBUS_GPIO_H +#define __INCLUDE_LINUX_I2C_CBUS_GPIO_H + +struct i2c_cbus_platform_data { + int dat_gpio; + int clk_gpio; + int sel_gpio; +}; + +#endif /* __INCLUDE_LINUX_I2C_CBUS_GPIO_H */ -- cgit v1.2.3 From 72b15b6ae97796c5fac687addde5dbfab872cf94 Mon Sep 17 00:00:00 2001 From: Omar Ramirez Luna Date: Mon, 19 Nov 2012 19:05:50 -0600 Subject: iommu/omap: Migrate to hwmod framework Use hwmod data and device attributes to build and register an omap device for iommu driver. - Update the naming convention in isp module. - Remove unneeded check for number of resources, as this is now handled by omap_device and prevents driver from loading. - Now unused, remove platform device and resource data, handling of sysconfig register for softreset purposes, use default latency structure. - Use hwmod API for reset handling. Signed-off-by: Omar Ramirez Luna Tested-by: Ohad Ben-Cohen Signed-off-by: Joerg Roedel --- arch/arm/mach-omap2/devices.c | 2 +- arch/arm/mach-omap2/omap-iommu.c | 168 +++++++------------------------ drivers/iommu/omap-iommu.c | 23 ++++- drivers/iommu/omap-iommu2.c | 19 ---- include/linux/platform_data/iommu-omap.h | 8 +- 5 files changed, 64 insertions(+), 156 deletions(-) (limited to 'include/linux/platform_data') diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c index c15f5a97b51c..787a996ec4eb 100644 --- a/arch/arm/mach-omap2/devices.c +++ b/arch/arm/mach-omap2/devices.c @@ -214,7 +214,7 @@ static struct platform_device omap3isp_device = { }; static struct omap_iommu_arch_data omap3_isp_iommu = { - .name = "isp", + .name = "mmu_isp", }; int omap3_init_camera(struct isp_platform_data *pdata) diff --git a/arch/arm/mach-omap2/omap-iommu.c b/arch/arm/mach-omap2/omap-iommu.c index a6a4ff8744b7..02726a647b1d 100644 --- a/arch/arm/mach-omap2/omap-iommu.c +++ b/arch/arm/mach-omap2/omap-iommu.c @@ -12,153 +12,61 @@ #include #include +#include +#include #include +#include +#include -#include "soc.h" -#include "common.h" - -struct iommu_device { - resource_size_t base; - int irq; - struct iommu_platform_data pdata; - struct resource res[2]; -}; -static struct iommu_device *devices; -static int num_iommu_devices; - -#ifdef CONFIG_ARCH_OMAP3 -static struct iommu_device omap3_devices[] = { - { - .base = 0x480bd400, - .irq = 24 + OMAP_INTC_START, - .pdata = { - .name = "isp", - .nr_tlb_entries = 8, - .clk_name = "cam_ick", - .da_start = 0x0, - .da_end = 0xFFFFF000, - }, - }, -#if defined(CONFIG_OMAP_IOMMU_IVA2) - { - .base = 0x5d000000, - .irq = 28 + OMAP_INTC_START, - .pdata = { - .name = "iva2", - .nr_tlb_entries = 32, - .clk_name = "iva2_ck", - .da_start = 0x11000000, - .da_end = 0xFFFFF000, - }, - }, -#endif -}; -#define NR_OMAP3_IOMMU_DEVICES ARRAY_SIZE(omap3_devices) -static struct platform_device *omap3_iommu_pdev[NR_OMAP3_IOMMU_DEVICES]; -#else -#define omap3_devices NULL -#define NR_OMAP3_IOMMU_DEVICES 0 -#define omap3_iommu_pdev NULL -#endif - -#ifdef CONFIG_ARCH_OMAP4 -static struct iommu_device omap4_devices[] = { - { - .base = OMAP4_MMU1_BASE, - .irq = 100 + OMAP44XX_IRQ_GIC_START, - .pdata = { - .name = "ducati", - .nr_tlb_entries = 32, - .clk_name = "ipu_fck", - .da_start = 0x0, - .da_end = 0xFFFFF000, - }, - }, - { - .base = OMAP4_MMU2_BASE, - .irq = 28 + OMAP44XX_IRQ_GIC_START, - .pdata = { - .name = "tesla", - .nr_tlb_entries = 32, - .clk_name = "dsp_fck", - .da_start = 0x0, - .da_end = 0xFFFFF000, - }, - }, -}; -#define NR_OMAP4_IOMMU_DEVICES ARRAY_SIZE(omap4_devices) -static struct platform_device *omap4_iommu_pdev[NR_OMAP4_IOMMU_DEVICES]; -#else -#define omap4_devices NULL -#define NR_OMAP4_IOMMU_DEVICES 0 -#define omap4_iommu_pdev NULL -#endif - -static struct platform_device **omap_iommu_pdev; - -static int __init omap_iommu_init(void) +static int __init omap_iommu_dev_init(struct omap_hwmod *oh, void *unused) { - int i, err; - struct resource res[] = { - { .flags = IORESOURCE_MEM }, - { .flags = IORESOURCE_IRQ }, - }; + struct platform_device *pdev; + struct iommu_platform_data *pdata; + struct omap_mmu_dev_attr *a = (struct omap_mmu_dev_attr *)oh->dev_attr; + static int i; + + pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + pdata->name = oh->name; + pdata->clk_name = oh->main_clk; + pdata->nr_tlb_entries = a->nr_tlb_entries; + pdata->da_start = a->da_start; + pdata->da_end = a->da_end; + + if (oh->rst_lines_cnt == 1) { + pdata->reset_name = oh->rst_lines->name; + pdata->assert_reset = omap_device_assert_hardreset; + pdata->deassert_reset = omap_device_deassert_hardreset; + } - if (cpu_is_omap34xx()) { - devices = omap3_devices; - omap_iommu_pdev = omap3_iommu_pdev; - num_iommu_devices = NR_OMAP3_IOMMU_DEVICES; - } else if (cpu_is_omap44xx()) { - devices = omap4_devices; - omap_iommu_pdev = omap4_iommu_pdev; - num_iommu_devices = NR_OMAP4_IOMMU_DEVICES; - } else - return -ENODEV; + pdev = omap_device_build("omap-iommu", i, oh, pdata, sizeof(*pdata), + NULL, 0, 0); - for (i = 0; i < num_iommu_devices; i++) { - struct platform_device *pdev; - const struct iommu_device *d = &devices[i]; + kfree(pdata); - pdev = platform_device_alloc("omap-iommu", i); - if (!pdev) { - err = -ENOMEM; - goto err_out; - } + if (IS_ERR(pdev)) { + pr_err("%s: device build err: %ld\n", __func__, PTR_ERR(pdev)); + return PTR_ERR(pdev); + } - res[0].start = d->base; - res[0].end = d->base + MMU_REG_SIZE - 1; - res[1].start = res[1].end = d->irq; + i++; - err = platform_device_add_resources(pdev, res, - ARRAY_SIZE(res)); - if (err) - goto err_out; - err = platform_device_add_data(pdev, &d->pdata, - sizeof(d->pdata)); - if (err) - goto err_out; - err = platform_device_add(pdev); - if (err) - goto err_out; - omap_iommu_pdev[i] = pdev; - } return 0; +} -err_out: - while (i--) - platform_device_put(omap_iommu_pdev[i]); - return err; +static int __init omap_iommu_init(void) +{ + return omap_hwmod_for_each_by_class("mmu", omap_iommu_dev_init, NULL); } /* must be ready before omap3isp is probed */ subsys_initcall(omap_iommu_init); static void __exit omap_iommu_exit(void) { - int i; - - for (i = 0; i < num_iommu_devices; i++) - platform_device_unregister(omap_iommu_pdev[i]); + /* Do nothing */ } module_exit(omap_iommu_exit); diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index f8082da6179b..af9b4f31f594 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -143,13 +143,23 @@ EXPORT_SYMBOL_GPL(omap_iommu_arch_version); static int iommu_enable(struct omap_iommu *obj) { int err; + struct platform_device *pdev = to_platform_device(obj->dev); + struct iommu_platform_data *pdata = pdev->dev.platform_data; - if (!obj) + if (!obj || !pdata) return -EINVAL; if (!arch_iommu) return -ENODEV; + if (pdata->deassert_reset) { + err = pdata->deassert_reset(pdev, pdata->reset_name); + if (err) { + dev_err(obj->dev, "deassert_reset failed: %d\n", err); + return err; + } + } + clk_enable(obj->clk); err = arch_iommu->enable(obj); @@ -159,12 +169,18 @@ static int iommu_enable(struct omap_iommu *obj) static void iommu_disable(struct omap_iommu *obj) { - if (!obj) + struct platform_device *pdev = to_platform_device(obj->dev); + struct iommu_platform_data *pdata = pdev->dev.platform_data; + + if (!obj || !pdata) return; arch_iommu->disable(obj); clk_disable(obj->clk); + + if (pdata->assert_reset) + pdata->assert_reset(pdev, pdata->reset_name); } /* @@ -926,9 +942,6 @@ static int __devinit omap_iommu_probe(struct platform_device *pdev) struct resource *res; struct iommu_platform_data *pdata = pdev->dev.platform_data; - if (pdev->num_resources != 2) - return -EINVAL; - obj = kzalloc(sizeof(*obj) + MMU_REG_SIZE, GFP_KERNEL); if (!obj) return -ENOMEM; diff --git a/drivers/iommu/omap-iommu2.c b/drivers/iommu/omap-iommu2.c index c02020292377..4a3a1c7a38c1 100644 --- a/drivers/iommu/omap-iommu2.c +++ b/drivers/iommu/omap-iommu2.c @@ -35,12 +35,8 @@ #define MMU_SYS_IDLE_SMART (2 << MMU_SYS_IDLE_SHIFT) #define MMU_SYS_IDLE_MASK (3 << MMU_SYS_IDLE_SHIFT) -#define MMU_SYS_SOFTRESET (1 << 1) #define MMU_SYS_AUTOIDLE 1 -/* SYSSTATUS */ -#define MMU_SYS_RESETDONE 1 - /* IRQSTATUS & IRQENABLE */ #define MMU_IRQ_MULTIHITFAULT (1 << 4) #define MMU_IRQ_TABLEWALKFAULT (1 << 3) @@ -97,7 +93,6 @@ static void __iommu_set_twl(struct omap_iommu *obj, bool on) static int omap2_iommu_enable(struct omap_iommu *obj) { u32 l, pa; - unsigned long timeout; if (!obj->iopgd || !IS_ALIGNED((u32)obj->iopgd, SZ_16K)) return -EINVAL; @@ -106,20 +101,6 @@ static int omap2_iommu_enable(struct omap_iommu *obj) if (!IS_ALIGNED(pa, SZ_16K)) return -EINVAL; - iommu_write_reg(obj, MMU_SYS_SOFTRESET, MMU_SYSCONFIG); - - timeout = jiffies + msecs_to_jiffies(20); - do { - l = iommu_read_reg(obj, MMU_SYSSTATUS); - if (l & MMU_SYS_RESETDONE) - break; - } while (!time_after(jiffies, timeout)); - - if (!(l & MMU_SYS_RESETDONE)) { - dev_err(obj->dev, "can't take mmu out of reset\n"); - return -ENODEV; - } - l = iommu_read_reg(obj, MMU_REVISION); dev_info(obj->dev, "%s: version %d.%d\n", obj->name, (l >> 4) & 0xf, l & 0xf); diff --git a/include/linux/platform_data/iommu-omap.h b/include/linux/platform_data/iommu-omap.h index c677b9f2fefa..ef2060d7eeb8 100644 --- a/include/linux/platform_data/iommu-omap.h +++ b/include/linux/platform_data/iommu-omap.h @@ -10,6 +10,8 @@ * published by the Free Software Foundation. */ +#include + #define MMU_REG_SIZE 256 /** @@ -43,7 +45,11 @@ struct omap_mmu_dev_attr { struct iommu_platform_data { const char *name; const char *clk_name; - const int nr_tlb_entries; + const char *reset_name; + int nr_tlb_entries; u32 da_start; u32 da_end; + + int (*assert_reset)(struct platform_device *pdev, const char *name); + int (*deassert_reset)(struct platform_device *pdev, const char *name); }; -- cgit v1.2.3 From ebf7cda0f92effd8169b831fae81e9437dce1fef Mon Sep 17 00:00:00 2001 From: Omar Ramirez Luna Date: Mon, 19 Nov 2012 19:05:51 -0600 Subject: iommu/omap: Adapt to runtime pm Use runtime PM functionality interfaced with hwmod enable/idle functions, to replace direct clock operations and sysconfig handling. Due to reset sequence, pm_runtime_[get|put]_sync must be used, to avoid possible operations with the module under reset. Because of this and given that the driver uses spin_locks to protect their critical sections, we must use pm_runtime_irq_safe in order for the runtime ops to be happy, otherwise might_sleep_if checks in runtime framework will complain. The remaining pm_runtime out of iommu_enable and iommu_disable corresponds to paths that can be accessed through debugfs, some of them doesn't work if the module is not enabled first, but in future if the mmu is idled withouth freeing, these are needed to debug. Signed-off-by: Omar Ramirez Luna Tested-by: Ohad Ben-Cohen Acked-by: Tony Lindgren Signed-off-by: Joerg Roedel --- arch/arm/mach-omap2/omap-iommu.c | 1 - drivers/iommu/omap-iommu.c | 40 +++++++++++++++----------------- drivers/iommu/omap-iommu.h | 3 --- drivers/iommu/omap-iommu2.c | 17 -------------- include/linux/platform_data/iommu-omap.h | 1 - 5 files changed, 19 insertions(+), 43 deletions(-) (limited to 'include/linux/platform_data') diff --git a/arch/arm/mach-omap2/omap-iommu.c b/arch/arm/mach-omap2/omap-iommu.c index 02726a647b1d..7642fc4672c1 100644 --- a/arch/arm/mach-omap2/omap-iommu.c +++ b/arch/arm/mach-omap2/omap-iommu.c @@ -31,7 +31,6 @@ static int __init omap_iommu_dev_init(struct omap_hwmod *oh, void *unused) return -ENOMEM; pdata->name = oh->name; - pdata->clk_name = oh->main_clk; pdata->nr_tlb_entries = a->nr_tlb_entries; pdata->da_start = a->da_start; pdata->da_end = a->da_end; diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index af9b4f31f594..18108c1405e2 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -16,13 +16,13 @@ #include #include #include -#include #include #include #include #include #include #include +#include #include @@ -160,7 +160,7 @@ static int iommu_enable(struct omap_iommu *obj) } } - clk_enable(obj->clk); + pm_runtime_get_sync(obj->dev); err = arch_iommu->enable(obj); @@ -177,7 +177,7 @@ static void iommu_disable(struct omap_iommu *obj) arch_iommu->disable(obj); - clk_disable(obj->clk); + pm_runtime_put_sync(obj->dev); if (pdata->assert_reset) pdata->assert_reset(pdev, pdata->reset_name); @@ -303,7 +303,7 @@ static int load_iotlb_entry(struct omap_iommu *obj, struct iotlb_entry *e) if (!obj || !obj->nr_tlb_entries || !e) return -EINVAL; - clk_enable(obj->clk); + pm_runtime_get_sync(obj->dev); iotlb_lock_get(obj, &l); if (l.base == obj->nr_tlb_entries) { @@ -333,7 +333,7 @@ static int load_iotlb_entry(struct omap_iommu *obj, struct iotlb_entry *e) cr = iotlb_alloc_cr(obj, e); if (IS_ERR(cr)) { - clk_disable(obj->clk); + pm_runtime_put_sync(obj->dev); return PTR_ERR(cr); } @@ -347,7 +347,7 @@ static int load_iotlb_entry(struct omap_iommu *obj, struct iotlb_entry *e) l.vict = l.base; iotlb_lock_set(obj, &l); out: - clk_disable(obj->clk); + pm_runtime_put_sync(obj->dev); return err; } @@ -377,7 +377,7 @@ static void flush_iotlb_page(struct omap_iommu *obj, u32 da) int i; struct cr_regs cr; - clk_enable(obj->clk); + pm_runtime_get_sync(obj->dev); for_each_iotlb_cr(obj, obj->nr_tlb_entries, i, cr) { u32 start; @@ -396,7 +396,7 @@ static void flush_iotlb_page(struct omap_iommu *obj, u32 da) iommu_write_reg(obj, 1, MMU_FLUSH_ENTRY); } } - clk_disable(obj->clk); + pm_runtime_put_sync(obj->dev); if (i == obj->nr_tlb_entries) dev_dbg(obj->dev, "%s: no page for %08x\n", __func__, da); @@ -410,7 +410,7 @@ static void flush_iotlb_all(struct omap_iommu *obj) { struct iotlb_lock l; - clk_enable(obj->clk); + pm_runtime_get_sync(obj->dev); l.base = 0; l.vict = 0; @@ -418,7 +418,7 @@ static void flush_iotlb_all(struct omap_iommu *obj) iommu_write_reg(obj, 1, MMU_GFLUSH); - clk_disable(obj->clk); + pm_runtime_put_sync(obj->dev); } #if defined(CONFIG_OMAP_IOMMU_DEBUG) || defined(CONFIG_OMAP_IOMMU_DEBUG_MODULE) @@ -428,11 +428,11 @@ ssize_t omap_iommu_dump_ctx(struct omap_iommu *obj, char *buf, ssize_t bytes) if (!obj || !buf) return -EINVAL; - clk_enable(obj->clk); + pm_runtime_get_sync(obj->dev); bytes = arch_iommu->dump_ctx(obj, buf, bytes); - clk_disable(obj->clk); + pm_runtime_put_sync(obj->dev); return bytes; } @@ -446,7 +446,7 @@ __dump_tlb_entries(struct omap_iommu *obj, struct cr_regs *crs, int num) struct cr_regs tmp; struct cr_regs *p = crs; - clk_enable(obj->clk); + pm_runtime_get_sync(obj->dev); iotlb_lock_get(obj, &saved); for_each_iotlb_cr(obj, num, i, tmp) { @@ -456,7 +456,7 @@ __dump_tlb_entries(struct omap_iommu *obj, struct cr_regs *crs, int num) } iotlb_lock_set(obj, &saved); - clk_disable(obj->clk); + pm_runtime_put_sync(obj->dev); return p - crs; } @@ -946,10 +946,6 @@ static int __devinit omap_iommu_probe(struct platform_device *pdev) if (!obj) return -ENOMEM; - obj->clk = clk_get(&pdev->dev, pdata->clk_name); - if (IS_ERR(obj->clk)) - goto err_clk; - obj->nr_tlb_entries = pdata->nr_tlb_entries; obj->name = pdata->name; obj->dev = &pdev->dev; @@ -992,6 +988,9 @@ static int __devinit omap_iommu_probe(struct platform_device *pdev) goto err_irq; platform_set_drvdata(pdev, obj); + pm_runtime_irq_safe(obj->dev); + pm_runtime_enable(obj->dev); + dev_info(&pdev->dev, "%s registered\n", obj->name); return 0; @@ -1000,8 +999,6 @@ err_irq: err_ioremap: release_mem_region(res->start, resource_size(res)); err_mem: - clk_put(obj->clk); -err_clk: kfree(obj); return err; } @@ -1022,7 +1019,8 @@ static int __devexit omap_iommu_remove(struct platform_device *pdev) release_mem_region(res->start, resource_size(res)); iounmap(obj->regbase); - clk_put(obj->clk); + pm_runtime_disable(obj->dev); + dev_info(&pdev->dev, "%s removed\n", obj->name); kfree(obj); return 0; diff --git a/drivers/iommu/omap-iommu.h b/drivers/iommu/omap-iommu.h index 2b5f3c04d167..120084206602 100644 --- a/drivers/iommu/omap-iommu.h +++ b/drivers/iommu/omap-iommu.h @@ -29,7 +29,6 @@ struct iotlb_entry { struct omap_iommu { const char *name; struct module *owner; - struct clk *clk; void __iomem *regbase; struct device *dev; void *isr_priv; @@ -116,8 +115,6 @@ static inline struct omap_iommu *dev_to_omap_iommu(struct device *dev) * MMU Register offsets */ #define MMU_REVISION 0x00 -#define MMU_SYSCONFIG 0x10 -#define MMU_SYSSTATUS 0x14 #define MMU_IRQSTATUS 0x18 #define MMU_IRQENABLE 0x1c #define MMU_WALKING_ST 0x40 diff --git a/drivers/iommu/omap-iommu2.c b/drivers/iommu/omap-iommu2.c index 4a3a1c7a38c1..d745094a69dd 100644 --- a/drivers/iommu/omap-iommu2.c +++ b/drivers/iommu/omap-iommu2.c @@ -28,15 +28,6 @@ */ #define IOMMU_ARCH_VERSION 0x00000011 -/* SYSCONF */ -#define MMU_SYS_IDLE_SHIFT 3 -#define MMU_SYS_IDLE_FORCE (0 << MMU_SYS_IDLE_SHIFT) -#define MMU_SYS_IDLE_NONE (1 << MMU_SYS_IDLE_SHIFT) -#define MMU_SYS_IDLE_SMART (2 << MMU_SYS_IDLE_SHIFT) -#define MMU_SYS_IDLE_MASK (3 << MMU_SYS_IDLE_SHIFT) - -#define MMU_SYS_AUTOIDLE 1 - /* IRQSTATUS & IRQENABLE */ #define MMU_IRQ_MULTIHITFAULT (1 << 4) #define MMU_IRQ_TABLEWALKFAULT (1 << 3) @@ -105,11 +96,6 @@ static int omap2_iommu_enable(struct omap_iommu *obj) dev_info(obj->dev, "%s: version %d.%d\n", obj->name, (l >> 4) & 0xf, l & 0xf); - l = iommu_read_reg(obj, MMU_SYSCONFIG); - l &= ~MMU_SYS_IDLE_MASK; - l |= (MMU_SYS_IDLE_SMART | MMU_SYS_AUTOIDLE); - iommu_write_reg(obj, l, MMU_SYSCONFIG); - iommu_write_reg(obj, pa, MMU_TTB); __iommu_set_twl(obj, true); @@ -123,7 +109,6 @@ static void omap2_iommu_disable(struct omap_iommu *obj) l &= ~MMU_CNTL_MASK; iommu_write_reg(obj, l, MMU_CNTL); - iommu_write_reg(obj, MMU_SYS_IDLE_FORCE, MMU_SYSCONFIG); dev_dbg(obj->dev, "%s is shutting down\n", obj->name); } @@ -252,8 +237,6 @@ omap2_iommu_dump_ctx(struct omap_iommu *obj, char *buf, ssize_t len) char *p = buf; pr_reg(REVISION); - pr_reg(SYSCONFIG); - pr_reg(SYSSTATUS); pr_reg(IRQSTATUS); pr_reg(IRQENABLE); pr_reg(WALKING_ST); diff --git a/include/linux/platform_data/iommu-omap.h b/include/linux/platform_data/iommu-omap.h index ef2060d7eeb8..5b429c43a297 100644 --- a/include/linux/platform_data/iommu-omap.h +++ b/include/linux/platform_data/iommu-omap.h @@ -44,7 +44,6 @@ struct omap_mmu_dev_attr { struct iommu_platform_data { const char *name; - const char *clk_name; const char *reset_name; int nr_tlb_entries; u32 da_start; -- cgit v1.2.3 From 63b68901dfd590cc13d4fe5c08dec2ca75b3c4aa Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Fri, 14 Dec 2012 09:09:11 -0800 Subject: mfd: omap-usb-host: get rid of cpu_is_omap..() macros Instead of using cpu_is_omap..() macros in the device driver we rely on information provided in the platform data. The only information we need is whether the USB Host module has a single ULPI bypass control bit for all ports or individual bypass control bits for each port. OMAP3 REV2.1 and earlier have the former. Signed-off-by: Roger Quadros Acked-by: Samuel Ortiz [tony@atomide.com: updated to remove plat/cpu.h] Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/usb-host.c | 4 ++++ drivers/mfd/omap-usb-host.c | 3 +-- include/linux/platform_data/usb-omap.h | 3 +++ 3 files changed, 8 insertions(+), 2 deletions(-) (limited to 'include/linux/platform_data') diff --git a/arch/arm/mach-omap2/usb-host.c b/arch/arm/mach-omap2/usb-host.c index d1dbe125b34f..2e44e8a22884 100644 --- a/arch/arm/mach-omap2/usb-host.c +++ b/arch/arm/mach-omap2/usb-host.c @@ -508,6 +508,10 @@ void __init usbhs_init(const struct usbhs_omap_board_data *pdata) if (cpu_is_omap34xx()) { setup_ehci_io_mux(pdata->port_mode); setup_ohci_io_mux(pdata->port_mode); + + if (omap_rev() <= OMAP3430_REV_ES2_1) + usbhs_data.single_ulpi_bypass = true; + } else if (cpu_is_omap44xx()) { setup_4430ehci_io_mux(pdata->port_mode); setup_4430ohci_io_mux(pdata->port_mode); diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c index 770a0d01e0b9..05164d7f054b 100644 --- a/drivers/mfd/omap-usb-host.c +++ b/drivers/mfd/omap-usb-host.c @@ -25,7 +25,6 @@ #include #include #include -#include #include #include #include @@ -384,7 +383,7 @@ static void omap_usbhs_init(struct device *dev) reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS; /* Bypass the TLL module for PHY mode operation */ - if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) { + if (pdata->single_ulpi_bypass) { dev_dbg(dev, "OMAP3 ES version <= ES2.1\n"); if (is_ehci_phy_mode(pdata->port_mode[0]) || is_ehci_phy_mode(pdata->port_mode[1]) || diff --git a/include/linux/platform_data/usb-omap.h b/include/linux/platform_data/usb-omap.h index 8570bcfe6311..ef65b67c56c3 100644 --- a/include/linux/platform_data/usb-omap.h +++ b/include/linux/platform_data/usb-omap.h @@ -59,6 +59,9 @@ struct usbhs_omap_platform_data { struct ehci_hcd_omap_platform_data *ehci_data; struct ohci_hcd_omap_platform_data *ohci_data; + + /* OMAP3 <= ES2.1 have a single ulpi bypass control bit */ + unsigned single_ulpi_bypass:1; }; /*-------------------------------------------------------------------------*/ -- cgit v1.2.3 From d9ba573718666df2e7e30d671f81bba39d07f91c Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 14 Dec 2012 09:09:11 -0800 Subject: ARM: OMAP: Move plat/omap-serial.h to include/linux/platform_data/serial-omap.h We need to move this file to allow ARM multiplatform configurations to build for omap2+. This can now be done as this file now only contains platform_data. cc: Russell King cc: Alan Cox cc: Greg Kroah-Hartman cc: Govindraj.R cc: Kevin Hilman cc: linux-serial@vger.kernel.org Reviewed-by: Felipe Balbi Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/serial.c | 3 +- arch/arm/plat-omap/include/plat/omap-serial.h | 51 --------------------------- drivers/tty/serial/omap-serial.c | 3 +- include/linux/platform_data/serial-omap.h | 51 +++++++++++++++++++++++++++ 4 files changed, 53 insertions(+), 55 deletions(-) delete mode 100644 arch/arm/plat-omap/include/plat/omap-serial.h create mode 100644 include/linux/platform_data/serial-omap.h (limited to 'include/linux/platform_data') diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index 93d102535c85..04fdbc4c499b 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -27,8 +27,7 @@ #include #include #include - -#include +#include #include "common.h" #include "omap_hwmod.h" diff --git a/arch/arm/plat-omap/include/plat/omap-serial.h b/arch/arm/plat-omap/include/plat/omap-serial.h deleted file mode 100644 index ff9b0aab5281..000000000000 --- a/arch/arm/plat-omap/include/plat/omap-serial.h +++ /dev/null @@ -1,51 +0,0 @@ -/* - * Driver for OMAP-UART controller. - * Based on drivers/serial/8250.c - * - * Copyright (C) 2010 Texas Instruments. - * - * Authors: - * Govindraj R - * Thara Gopinath - * - * 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 __OMAP_SERIAL_H__ -#define __OMAP_SERIAL_H__ - -#include -#include -#include - -#define DRIVER_NAME "omap_uart" - -/* - * Use tty device name as ttyO, [O -> OMAP] - * in bootargs we specify as console=ttyO0 if uart1 - * is used as console uart. - */ -#define OMAP_SERIAL_NAME "ttyO" - -struct omap_uart_port_info { - bool dma_enabled; /* To specify DMA Mode */ - unsigned int uartclk; /* UART clock rate */ - upf_t flags; /* UPF_* flags */ - unsigned int dma_rx_buf_size; - unsigned int dma_rx_timeout; - unsigned int autosuspend_timeout; - unsigned int dma_rx_poll_rate; - int DTR_gpio; - int DTR_inverted; - int DTR_present; - - int (*get_context_loss_count)(struct device *); - void (*set_forceidle)(struct device *); - void (*set_noidle)(struct device *); - void (*enable_wakeup)(struct device *, bool); -}; - -#endif /* __OMAP_SERIAL_H__ */ diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 23f797eb7a28..57d6b29c039c 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -41,8 +41,7 @@ #include #include #include - -#include +#include #define OMAP_MAX_HSUART_PORTS 6 diff --git a/include/linux/platform_data/serial-omap.h b/include/linux/platform_data/serial-omap.h new file mode 100644 index 000000000000..ff9b0aab5281 --- /dev/null +++ b/include/linux/platform_data/serial-omap.h @@ -0,0 +1,51 @@ +/* + * Driver for OMAP-UART controller. + * Based on drivers/serial/8250.c + * + * Copyright (C) 2010 Texas Instruments. + * + * Authors: + * Govindraj R + * Thara Gopinath + * + * 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 __OMAP_SERIAL_H__ +#define __OMAP_SERIAL_H__ + +#include +#include +#include + +#define DRIVER_NAME "omap_uart" + +/* + * Use tty device name as ttyO, [O -> OMAP] + * in bootargs we specify as console=ttyO0 if uart1 + * is used as console uart. + */ +#define OMAP_SERIAL_NAME "ttyO" + +struct omap_uart_port_info { + bool dma_enabled; /* To specify DMA Mode */ + unsigned int uartclk; /* UART clock rate */ + upf_t flags; /* UPF_* flags */ + unsigned int dma_rx_buf_size; + unsigned int dma_rx_timeout; + unsigned int autosuspend_timeout; + unsigned int dma_rx_poll_rate; + int DTR_gpio; + int DTR_inverted; + int DTR_present; + + int (*get_context_loss_count)(struct device *); + void (*set_forceidle)(struct device *); + void (*set_noidle)(struct device *); + void (*enable_wakeup)(struct device *, bool); +}; + +#endif /* __OMAP_SERIAL_H__ */ -- cgit v1.2.3