diff options
author | Stephen Boyd <sboyd@codeaurora.org> | 2017-10-31 03:59:10 +0300 |
---|---|---|
committer | Stephen Boyd <sboyd@codeaurora.org> | 2017-10-31 03:59:10 +0300 |
commit | ae74ac0828868af3295395be7bc892e0d0aba376 (patch) | |
tree | 3afe9ccaa8b7f5fc195d3a76556570a3edd8bab2 /drivers | |
parent | faa865f18cb7e64fe96fdbeb3662f50050bb8d26 (diff) | |
parent | 7679eb20353dc74e47fbc97b2d77fd4f88a77c0f (diff) | |
download | linux-ae74ac0828868af3295395be7bc892e0d0aba376.tar.xz |
Merge tag 'clk-v4.15-exynos-pm' of git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk into clk-next
Pull Samsung clk driver updates from Sylwester Nawrocki:
- An addition of separate driver for the Exynos 4412 ISP CMU, needed
to model and properly handle the clock controller's dependencies
on the ISP power domain.
- Adding __maybe_unused attributes to the exynos5433_cmu_{suspend,
resume} ops to suppress compiler warnings with CONFIG_PM disabled.
* tag 'clk-v4.15-exynos-pm' of git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk:
clk: samsung: Add a separate driver for Exynos4412 ISP clocks
clk: samsung: Add dt bindings for Exynos4412 ISP clock controller
clk: samsung: Instantiate Exynos4412 ISP clocks only when available
clk: samsung: exynos5433: mark PM functions as __maybe_unused
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/clk/samsung/Makefile | 1 | ||||
-rw-r--r-- | drivers/clk/samsung/clk-exynos4.c | 31 | ||||
-rw-r--r-- | drivers/clk/samsung/clk-exynos4412-isp.c | 179 | ||||
-rw-r--r-- | drivers/clk/samsung/clk-exynos5433.c | 4 |
4 files changed, 206 insertions, 9 deletions
diff --git a/drivers/clk/samsung/Makefile b/drivers/clk/samsung/Makefile index 7afc21dc374e..8a67a3bb6803 100644 --- a/drivers/clk/samsung/Makefile +++ b/drivers/clk/samsung/Makefile @@ -5,6 +5,7 @@ obj-$(CONFIG_COMMON_CLK) += clk.o clk-pll.o clk-cpu.o obj-$(CONFIG_SOC_EXYNOS3250) += clk-exynos3250.o obj-$(CONFIG_ARCH_EXYNOS4) += clk-exynos4.o +obj-$(CONFIG_ARCH_EXYNOS4) += clk-exynos4412-isp.o obj-$(CONFIG_SOC_EXYNOS5250) += clk-exynos5250.o obj-$(CONFIG_SOC_EXYNOS5260) += clk-exynos5260.o obj-$(CONFIG_SOC_EXYNOS5410) += clk-exynos5410.o diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c index f452abc6a702..134f25f2a913 100644 --- a/drivers/clk/samsung/clk-exynos4.c +++ b/drivers/clk/samsung/clk-exynos4.c @@ -836,6 +836,12 @@ static const struct samsung_div_clock exynos4x12_div_clks[] __initconst = { DIV(0, "div_spi1_isp", "mout_spi1_isp", E4X12_DIV_ISP, 16, 4), DIV(0, "div_spi1_isp_pre", "div_spi1_isp", E4X12_DIV_ISP, 20, 8), DIV(0, "div_uart_isp", "mout_uart_isp", E4X12_DIV_ISP, 28, 4), + DIV(CLK_SCLK_FIMG2D, "sclk_fimg2d", "mout_g2d", DIV_DMC1, 0, 4), + DIV(CLK_DIV_C2C, "div_c2c", "mout_c2c", DIV_DMC1, 4, 3), + DIV(0, "div_c2c_aclk", "div_c2c", DIV_DMC1, 12, 3), +}; + +static struct samsung_div_clock exynos4x12_isp_div_clks[] = { DIV_F(CLK_DIV_ISP0, "div_isp0", "aclk200", E4X12_DIV_ISP0, 0, 3, CLK_GET_RATE_NOCACHE, 0), DIV_F(CLK_DIV_ISP1, "div_isp1", "aclk200", E4X12_DIV_ISP0, 4, 3, @@ -845,9 +851,6 @@ static const struct samsung_div_clock exynos4x12_div_clks[] __initconst = { 4, 3, CLK_GET_RATE_NOCACHE, 0), DIV_F(CLK_DIV_MCUISP1, "div_mcuisp1", "div_mcuisp0", E4X12_DIV_ISP1, 8, 3, CLK_GET_RATE_NOCACHE, 0), - DIV(CLK_SCLK_FIMG2D, "sclk_fimg2d", "mout_g2d", DIV_DMC1, 0, 4), - DIV(CLK_DIV_C2C, "div_c2c", "mout_c2c", DIV_DMC1, 4, 3), - DIV(0, "div_c2c_aclk", "div_c2c", DIV_DMC1, 12, 3), }; /* list of gate clocks supported in all exynos4 soc's */ @@ -1141,6 +1144,13 @@ static const struct samsung_gate_clock exynos4x12_gate_clks[] __initconst = { 0, 0), GATE(CLK_I2S0, "i2s0", "aclk100", E4X12_GATE_IP_MAUDIO, 3, 0, 0), + GATE(CLK_G2D, "g2d", "aclk200", GATE_IP_DMC, 23, 0, 0), + GATE(CLK_SMMU_G2D, "smmu_g2d", "aclk200", GATE_IP_DMC, 24, 0, 0), + GATE(CLK_TMU_APBIF, "tmu_apbif", "aclk100", E4X12_GATE_IP_PERIR, 17, 0, + 0), +}; + +static struct samsung_gate_clock exynos4x12_isp_gate_clks[] = { GATE(CLK_FIMC_ISP, "isp", "aclk200", E4X12_GATE_ISP0, 0, CLK_IGNORE_UNUSED | CLK_GET_RATE_NOCACHE, 0), GATE(CLK_FIMC_DRC, "drc", "aclk200", E4X12_GATE_ISP0, 1, @@ -1193,10 +1203,6 @@ static const struct samsung_gate_clock exynos4x12_gate_clks[] __initconst = { CLK_IGNORE_UNUSED | CLK_GET_RATE_NOCACHE, 0), GATE(CLK_SPI1_ISP, "spi1_isp", "aclk200", E4X12_GATE_ISP1, 13, CLK_IGNORE_UNUSED | CLK_GET_RATE_NOCACHE, 0), - GATE(CLK_G2D, "g2d", "aclk200", GATE_IP_DMC, 23, 0, 0), - GATE(CLK_SMMU_G2D, "smmu_g2d", "aclk200", GATE_IP_DMC, 24, 0, 0), - GATE(CLK_TMU_APBIF, "tmu_apbif", "aclk100", E4X12_GATE_IP_PERIR, 17, 0, - 0), }; /* @@ -1497,6 +1503,8 @@ static void __init exynos4_clk_init(struct device_node *np, e4210_armclk_d, ARRAY_SIZE(e4210_armclk_d), CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1); } else { + struct resource res; + samsung_clk_register_mux(ctx, exynos4x12_mux_clks, ARRAY_SIZE(exynos4x12_mux_clks)); samsung_clk_register_div(ctx, exynos4x12_div_clks, @@ -1506,6 +1514,15 @@ static void __init exynos4_clk_init(struct device_node *np, samsung_clk_register_fixed_factor(ctx, exynos4x12_fixed_factor_clks, ARRAY_SIZE(exynos4x12_fixed_factor_clks)); + + of_address_to_resource(np, 0, &res); + if (resource_size(&res) > 0x18000) { + samsung_clk_register_div(ctx, exynos4x12_isp_div_clks, + ARRAY_SIZE(exynos4x12_isp_div_clks)); + samsung_clk_register_gate(ctx, exynos4x12_isp_gate_clks, + ARRAY_SIZE(exynos4x12_isp_gate_clks)); + } + exynos_register_cpu_clock(ctx, CLK_ARM_CLK, "armclk", mout_core_p4x12[0], mout_core_p4x12[1], 0x14200, e4412_armclk_d, ARRAY_SIZE(e4412_armclk_d), diff --git a/drivers/clk/samsung/clk-exynos4412-isp.c b/drivers/clk/samsung/clk-exynos4412-isp.c new file mode 100644 index 000000000000..d5f1ccb36300 --- /dev/null +++ b/drivers/clk/samsung/clk-exynos4412-isp.c @@ -0,0 +1,179 @@ +/* + * Copyright (c) 2017 Samsung Electronics Co., Ltd. + * Author: Marek Szyprowski <m.szyprowski@samsung.com> + * + * 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. + * + * Common Clock Framework support for Exynos4412 ISP module. +*/ + +#include <dt-bindings/clock/exynos4.h> +#include <linux/slab.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> + +#include "clk.h" + +/* Exynos4x12 specific registers, which belong to ISP power domain */ +#define E4X12_DIV_ISP0 0x0300 +#define E4X12_DIV_ISP1 0x0304 +#define E4X12_GATE_ISP0 0x0800 +#define E4X12_GATE_ISP1 0x0804 + +/* + * Support for CMU save/restore across system suspends + */ +static struct samsung_clk_reg_dump *exynos4x12_save_isp; + +static const unsigned long exynos4x12_clk_isp_save[] __initconst = { + E4X12_DIV_ISP0, + E4X12_DIV_ISP1, + E4X12_GATE_ISP0, + E4X12_GATE_ISP1, +}; + +PNAME(mout_user_aclk400_mcuisp_p4x12) = { "fin_pll", "div_aclk400_mcuisp", }; + +static struct samsung_div_clock exynos4x12_isp_div_clks[] = { + DIV(CLK_ISP_DIV_ISP0, "div_isp0", "aclk200", E4X12_DIV_ISP0, 0, 3), + DIV(CLK_ISP_DIV_ISP1, "div_isp1", "aclk200", E4X12_DIV_ISP0, 4, 3), + DIV(CLK_ISP_DIV_MCUISP0, "div_mcuisp0", "aclk400_mcuisp", + E4X12_DIV_ISP1, 4, 3), + DIV(CLK_ISP_DIV_MCUISP1, "div_mcuisp1", "div_mcuisp0", + E4X12_DIV_ISP1, 8, 3), + DIV(0, "div_mpwm", "div_isp1", E4X12_DIV_ISP1, 0, 3), +}; + +static struct samsung_gate_clock exynos4x12_isp_gate_clks[] = { + GATE(CLK_ISP_FIMC_ISP, "isp", "aclk200", E4X12_GATE_ISP0, 0, 0, 0), + GATE(CLK_ISP_FIMC_DRC, "drc", "aclk200", E4X12_GATE_ISP0, 1, 0, 0), + GATE(CLK_ISP_FIMC_FD, "fd", "aclk200", E4X12_GATE_ISP0, 2, 0, 0), + GATE(CLK_ISP_FIMC_LITE0, "lite0", "aclk200", E4X12_GATE_ISP0, 3, 0, 0), + GATE(CLK_ISP_FIMC_LITE1, "lite1", "aclk200", E4X12_GATE_ISP0, 4, 0, 0), + GATE(CLK_ISP_MCUISP, "mcuisp", "aclk200", E4X12_GATE_ISP0, 5, 0, 0), + GATE(CLK_ISP_GICISP, "gicisp", "aclk200", E4X12_GATE_ISP0, 7, 0, 0), + GATE(CLK_ISP_SMMU_ISP, "smmu_isp", "aclk200", E4X12_GATE_ISP0, 8, 0, 0), + GATE(CLK_ISP_SMMU_DRC, "smmu_drc", "aclk200", E4X12_GATE_ISP0, 9, 0, 0), + GATE(CLK_ISP_SMMU_FD, "smmu_fd", "aclk200", E4X12_GATE_ISP0, 10, 0, 0), + GATE(CLK_ISP_SMMU_LITE0, "smmu_lite0", "aclk200", E4X12_GATE_ISP0, 11, + 0, 0), + GATE(CLK_ISP_SMMU_LITE1, "smmu_lite1", "aclk200", E4X12_GATE_ISP0, 12, + 0, 0), + GATE(CLK_ISP_PPMUISPMX, "ppmuispmx", "aclk200", E4X12_GATE_ISP0, 20, + 0, 0), + GATE(CLK_ISP_PPMUISPX, "ppmuispx", "aclk200", E4X12_GATE_ISP0, 21, + 0, 0), + GATE(CLK_ISP_MCUCTL_ISP, "mcuctl_isp", "aclk200", E4X12_GATE_ISP0, 23, + 0, 0), + GATE(CLK_ISP_MPWM_ISP, "mpwm_isp", "aclk200", E4X12_GATE_ISP0, 24, + 0, 0), + GATE(CLK_ISP_I2C0_ISP, "i2c0_isp", "aclk200", E4X12_GATE_ISP0, 25, + 0, 0), + GATE(CLK_ISP_I2C1_ISP, "i2c1_isp", "aclk200", E4X12_GATE_ISP0, 26, + 0, 0), + GATE(CLK_ISP_MTCADC_ISP, "mtcadc_isp", "aclk200", E4X12_GATE_ISP0, 27, + 0, 0), + GATE(CLK_ISP_PWM_ISP, "pwm_isp", "aclk200", E4X12_GATE_ISP0, 28, 0, 0), + GATE(CLK_ISP_WDT_ISP, "wdt_isp", "aclk200", E4X12_GATE_ISP0, 30, 0, 0), + GATE(CLK_ISP_UART_ISP, "uart_isp", "aclk200", E4X12_GATE_ISP0, 31, + 0, 0), + GATE(CLK_ISP_ASYNCAXIM, "asyncaxim", "aclk200", E4X12_GATE_ISP1, 0, + 0, 0), + GATE(CLK_ISP_SMMU_ISPCX, "smmu_ispcx", "aclk200", E4X12_GATE_ISP1, 4, + 0, 0), + GATE(CLK_ISP_SPI0_ISP, "spi0_isp", "aclk200", E4X12_GATE_ISP1, 12, + 0, 0), + GATE(CLK_ISP_SPI1_ISP, "spi1_isp", "aclk200", E4X12_GATE_ISP1, 13, + 0, 0), +}; + +static int __maybe_unused exynos4x12_isp_clk_suspend(struct device *dev) +{ + struct samsung_clk_provider *ctx = dev_get_drvdata(dev); + + samsung_clk_save(ctx->reg_base, exynos4x12_save_isp, + ARRAY_SIZE(exynos4x12_clk_isp_save)); + return 0; +} + +static int __maybe_unused exynos4x12_isp_clk_resume(struct device *dev) +{ + struct samsung_clk_provider *ctx = dev_get_drvdata(dev); + + samsung_clk_restore(ctx->reg_base, exynos4x12_save_isp, + ARRAY_SIZE(exynos4x12_clk_isp_save)); + return 0; +} + +static int __init exynos4x12_isp_clk_probe(struct platform_device *pdev) +{ + struct samsung_clk_provider *ctx; + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct resource *res; + void __iomem *reg_base; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + reg_base = devm_ioremap_resource(dev, res); + if (IS_ERR(reg_base)) { + dev_err(dev, "failed to map registers\n"); + return PTR_ERR(reg_base); + } + + exynos4x12_save_isp = samsung_clk_alloc_reg_dump(exynos4x12_clk_isp_save, + ARRAY_SIZE(exynos4x12_clk_isp_save)); + if (!exynos4x12_save_isp) + return -ENOMEM; + + ctx = samsung_clk_init(np, reg_base, CLK_NR_ISP_CLKS); + ctx->dev = dev; + + platform_set_drvdata(pdev, ctx); + + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + pm_runtime_get_sync(dev); + + samsung_clk_register_div(ctx, exynos4x12_isp_div_clks, + ARRAY_SIZE(exynos4x12_isp_div_clks)); + samsung_clk_register_gate(ctx, exynos4x12_isp_gate_clks, + ARRAY_SIZE(exynos4x12_isp_gate_clks)); + + samsung_clk_of_add_provider(np, ctx); + pm_runtime_put(dev); + + return 0; +} + +static const struct of_device_id exynos4x12_isp_clk_of_match[] = { + { .compatible = "samsung,exynos4412-isp-clock", }, + { }, +}; + +static const struct dev_pm_ops exynos4x12_isp_pm_ops = { + SET_RUNTIME_PM_OPS(exynos4x12_isp_clk_suspend, + exynos4x12_isp_clk_resume, NULL) + SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) +}; + +static struct platform_driver exynos4x12_isp_clk_driver __refdata = { + .driver = { + .name = "exynos4x12-isp-clk", + .of_match_table = exynos4x12_isp_clk_of_match, + .suppress_bind_attrs = true, + .pm = &exynos4x12_isp_pm_ops, + }, + .probe = exynos4x12_isp_clk_probe, +}; + +static int __init exynos4x12_isp_clk_init(void) +{ + return platform_driver_register(&exynos4x12_isp_clk_driver); +} +core_initcall(exynos4x12_isp_clk_init); diff --git a/drivers/clk/samsung/clk-exynos5433.c b/drivers/clk/samsung/clk-exynos5433.c index cd9337613dd8..db270908037a 100644 --- a/drivers/clk/samsung/clk-exynos5433.c +++ b/drivers/clk/samsung/clk-exynos5433.c @@ -5450,7 +5450,7 @@ struct exynos5433_cmu_data { struct samsung_clk_provider ctx; }; -static int exynos5433_cmu_suspend(struct device *dev) +static int __maybe_unused exynos5433_cmu_suspend(struct device *dev) { struct exynos5433_cmu_data *data = dev_get_drvdata(dev); int i; @@ -5473,7 +5473,7 @@ static int exynos5433_cmu_suspend(struct device *dev) return 0; } -static int exynos5433_cmu_resume(struct device *dev) +static int __maybe_unused exynos5433_cmu_resume(struct device *dev) { struct exynos5433_cmu_data *data = dev_get_drvdata(dev); int i; |