diff options
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 2 | ||||
| -rw-r--r-- | Documentation/arm/samsung-s3c24xx/gpio.rst | 4 | ||||
| -rw-r--r-- | Documentation/arm/samsung-s3c24xx/overview.rst | 22 | ||||
| -rw-r--r-- | Documentation/arm/samsung-s3c24xx/usb-host.rst | 6 | ||||
| -rw-r--r-- | Documentation/arm/samsung/gpio.rst | 3 | ||||
| -rw-r--r-- | Documentation/networking/device_drivers/ethernet/davicom/dm9000.rst | 2 | ||||
| -rw-r--r-- | drivers/clk/samsung/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/clk/samsung/Makefile | 2 | ||||
| -rw-r--r-- | drivers/clk/samsung/clk-exynos-clkout.c | 199 | ||||
| -rw-r--r-- | drivers/cpuidle/cpuidle-big_little.c | 3 | ||||
| -rw-r--r-- | drivers/soc/samsung/exynos-pmu.c | 11 | ||||
| -rw-r--r-- | drivers/soc/samsung/exynos5422-asv.c | 2 | ||||
| -rw-r--r-- | drivers/soc/samsung/s3c-pm-check.c | 2 | ||||
| -rw-r--r-- | include/linux/serial_s3c.h | 2 |
14 files changed, 183 insertions, 87 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 526d65d8573a..bd512b70286d 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2951,7 +2951,7 @@ mtdset= [ARM] ARM/S3C2412 JIVE boot control - See arch/arm/mach-s3c2412/mach-jive.c + See arch/arm/mach-s3c/mach-jive.c mtouchusb.raw_coordinates= [HW] Make the MicroTouch USB driver use raw coordinates diff --git a/Documentation/arm/samsung-s3c24xx/gpio.rst b/Documentation/arm/samsung-s3c24xx/gpio.rst index f7c3d7d011a2..f4a8c800a457 100644 --- a/Documentation/arm/samsung-s3c24xx/gpio.rst +++ b/Documentation/arm/samsung-s3c24xx/gpio.rst @@ -29,7 +29,7 @@ GPIOLIB The following functions now either have a `s3c_` specific variant or are merged into gpiolib. See the definitions in - arch/arm/plat-samsung/include/plat/gpio-cfg.h: + arch/arm/mach-s3c/gpio-cfg.h: - s3c2410_gpio_setpin() gpio_set_value() or gpio_direction_output() - s3c2410_gpio_getpin() gpio_get_value() or gpio_direction_input() @@ -86,7 +86,7 @@ between the calls. Headers ------- - See arch/arm/mach-s3c24xx/include/mach/regs-gpio.h for the list + See arch/arm/mach-s3c/regs-gpio-s3c24xx.h for the list of GPIO pins, and the configuration values for them. This is included by using #include <mach/regs-gpio.h> diff --git a/Documentation/arm/samsung-s3c24xx/overview.rst b/Documentation/arm/samsung-s3c24xx/overview.rst index e9a1dc7276b5..14535e5cffb7 100644 --- a/Documentation/arm/samsung-s3c24xx/overview.rst +++ b/Documentation/arm/samsung-s3c24xx/overview.rst @@ -18,7 +18,7 @@ Introduction versions. The S3C2416 and S3C2450 devices are very similar and S3C2450 support is - included under the arch/arm/mach-s3c2416 directory. Note, while core + included under the arch/arm/mach-s3c directory. Note, while core support for these SoCs is in, work on some of the extra peripherals and extra interrupts is still ongoing. @@ -37,19 +37,11 @@ Configuration Layout ------ - The core support files are located in the platform code contained in - arch/arm/plat-s3c24xx with headers in include/asm-arm/plat-s3c24xx. - This directory should be kept to items shared between the platform - code (arch/arm/plat-s3c24xx) and the arch/arm/mach-s3c24* code. + The core support files, register, kernel and paltform data are located in the + platform code contained in arch/arm/mach-s3c with headers in + arch/arm/mach-s3c/include - Each cpu has a directory with the support files for it, and the - machines that carry the device. For example S3C2410 is contained - in arch/arm/mach-s3c2410 and S3C2440 in arch/arm/mach-s3c2440 - - Register, kernel and platform data definitions are held in the - arch/arm/mach-s3c2410 directory./include/mach - -arch/arm/plat-s3c24xx: +arch/arm/mach-s3c: Files in here are either common to all the s3c24xx family, or are common to only some of them with names to indicate this @@ -134,7 +126,7 @@ Adding New Machines should keep this in mind before altering items outside of their own machine files. - Machine definitions should be kept in linux/arch/arm/mach-s3c2410, + Machine definitions should be kept in arch/arm/mach-s3c, and there are a number of examples that can be looked at. Read the kernel patch submission policies as well as the @@ -293,7 +285,7 @@ Platform Data } Note, since the code is marked as __init, it should not be - exported outside arch/arm/mach-s3c2410/, or exported to + exported outside arch/arm/mach-s3c/, or exported to modules via EXPORT_SYMBOL() and related functions. diff --git a/Documentation/arm/samsung-s3c24xx/usb-host.rst b/Documentation/arm/samsung-s3c24xx/usb-host.rst index c84268bd1884..7aaffac89e04 100644 --- a/Documentation/arm/samsung-s3c24xx/usb-host.rst +++ b/Documentation/arm/samsung-s3c24xx/usb-host.rst @@ -36,7 +36,7 @@ Board Support ------------- The driver attaches to a platform device, which will need to be - added by the board specific support file in linux/arch/arm/mach-s3c2410, + added by the board specific support file in arch/arm/mach-s3c, such as mach-bast.c or mach-smdk2410.c The platform device's platform_data field is only needed if the @@ -51,9 +51,9 @@ Board Support Platform Data ------------- - See arch/arm/mach-s3c2410/include/mach/usb-control.h for the + See include/linux/platform_data/usb-ohci-s3c2410.h for the descriptions of the platform device data. An implementation - can be found in linux/arch/arm/mach-s3c2410/usb-simtec.c . + can be found in arch/arm/mach-s3c/simtec-usb.c . The `struct s3c2410_hcd_info` contains a pair of functions that get called to enable over-current detection, and to diff --git a/Documentation/arm/samsung/gpio.rst b/Documentation/arm/samsung/gpio.rst index 5f7cadd7159e..f6e27b07c993 100644 --- a/Documentation/arm/samsung/gpio.rst +++ b/Documentation/arm/samsung/gpio.rst @@ -37,5 +37,4 @@ implementation to configure pins as necessary. The s3c_gpio_cfgpin() and s3c_gpio_setpull() provide the means for a driver or machine to change gpio configuration. -See arch/arm/plat-samsung/include/plat/gpio-cfg.h for more information -on these functions. +See arch/arm/mach-s3c/gpio-cfg.h for more information on these functions. diff --git a/Documentation/networking/device_drivers/ethernet/davicom/dm9000.rst b/Documentation/networking/device_drivers/ethernet/davicom/dm9000.rst index d5458da01083..14eb0a4d4e4e 100644 --- a/Documentation/networking/device_drivers/ethernet/davicom/dm9000.rst +++ b/Documentation/networking/device_drivers/ethernet/davicom/dm9000.rst @@ -34,7 +34,7 @@ These resources should be specified in that order, as the ordering of the two address regions is important (the driver expects these to be address and then data). -An example from arch/arm/mach-s3c2410/mach-bast.c is:: +An example from arch/arm/mach-s3c/mach-bast.c is:: static struct resource bast_dm9k_resource[] = { [0] = { diff --git a/drivers/clk/samsung/Kconfig b/drivers/clk/samsung/Kconfig index 57d4b3f20417..7e9c186e57ef 100644 --- a/drivers/clk/samsung/Kconfig +++ b/drivers/clk/samsung/Kconfig @@ -19,6 +19,16 @@ config EXYNOS_AUDSS_CLK_CON on some Exynos SoC variants. Choose M or Y here if you want to use audio devices such as I2S, PCM, etc. +config EXYNOS_CLKOUT + tristate "Samsung Exynos clock output driver" + depends on COMMON_CLK_SAMSUNG + default y if ARCH_EXYNOS + help + Support for the clock output (XCLKOUT) present on some of Exynos SoC + variants. Usually the XCLKOUT is used to monitor the status of the + certains clocks from SoC, but it could also be tied to other devices + as an input clock. + # For S3C24XX platforms, select following symbols: config S3C2410_COMMON_CLK bool "Samsung S3C2410 clock controller support" if COMPILE_TEST diff --git a/drivers/clk/samsung/Makefile b/drivers/clk/samsung/Makefile index 1a4e6b787978..6891b087acff 100644 --- a/drivers/clk/samsung/Makefile +++ b/drivers/clk/samsung/Makefile @@ -15,7 +15,7 @@ obj-$(CONFIG_SOC_EXYNOS5420) += clk-exynos5420.o obj-$(CONFIG_SOC_EXYNOS5420) += clk-exynos5-subcmu.o obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos5433.o obj-$(CONFIG_EXYNOS_AUDSS_CLK_CON) += clk-exynos-audss.o -obj-$(CONFIG_ARCH_EXYNOS) += clk-exynos-clkout.o +obj-$(CONFIG_EXYNOS_CLKOUT) += clk-exynos-clkout.o obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos7.o obj-$(CONFIG_S3C2410_COMMON_CLK)+= clk-s3c2410.o obj-$(CONFIG_S3C2410_COMMON_DCLK)+= clk-s3c2410-dclk.o diff --git a/drivers/clk/samsung/clk-exynos-clkout.c b/drivers/clk/samsung/clk-exynos-clkout.c index 34ccb1d23bc3..9ec2f40cc400 100644 --- a/drivers/clk/samsung/clk-exynos-clkout.c +++ b/drivers/clk/samsung/clk-exynos-clkout.c @@ -9,10 +9,13 @@ #include <linux/slab.h> #include <linux/clk.h> #include <linux/clk-provider.h> +#include <linux/module.h> #include <linux/io.h> #include <linux/of.h> #include <linux/of_address.h> -#include <linux/syscore_ops.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/pm.h> #define EXYNOS_CLKOUT_NR_CLKS 1 #define EXYNOS_CLKOUT_PARENTS 32 @@ -28,41 +31,103 @@ struct exynos_clkout { struct clk_mux mux; spinlock_t slock; void __iomem *reg; + struct device_node *np; u32 pmu_debug_save; struct clk_hw_onecell_data data; }; -static struct exynos_clkout *clkout; +struct exynos_clkout_variant { + u32 mux_mask; +}; -static int exynos_clkout_suspend(void) -{ - clkout->pmu_debug_save = readl(clkout->reg + EXYNOS_PMU_DEBUG_REG); +static const struct exynos_clkout_variant exynos_clkout_exynos4 = { + .mux_mask = EXYNOS4_CLKOUT_MUX_MASK, +}; - return 0; -} +static const struct exynos_clkout_variant exynos_clkout_exynos5 = { + .mux_mask = EXYNOS5_CLKOUT_MUX_MASK, +}; -static void exynos_clkout_resume(void) +static const struct of_device_id exynos_clkout_ids[] = { + { + .compatible = "samsung,exynos3250-pmu", + .data = &exynos_clkout_exynos4, + }, { + .compatible = "samsung,exynos4210-pmu", + .data = &exynos_clkout_exynos4, + }, { + .compatible = "samsung,exynos4412-pmu", + .data = &exynos_clkout_exynos4, + }, { + .compatible = "samsung,exynos5250-pmu", + .data = &exynos_clkout_exynos5, + }, { + .compatible = "samsung,exynos5410-pmu", + .data = &exynos_clkout_exynos5, + }, { + .compatible = "samsung,exynos5420-pmu", + .data = &exynos_clkout_exynos5, + }, { + .compatible = "samsung,exynos5433-pmu", + .data = &exynos_clkout_exynos5, + }, { } +}; +MODULE_DEVICE_TABLE(of, exynos_clkout_ids); + +/* + * Device will be instantiated as child of PMU device without its own + * device node. Therefore match compatibles against parent. + */ +static int exynos_clkout_match_parent_dev(struct device *dev, u32 *mux_mask) { - writel(clkout->pmu_debug_save, clkout->reg + EXYNOS_PMU_DEBUG_REG); -} + const struct exynos_clkout_variant *variant; + const struct of_device_id *match; -static struct syscore_ops exynos_clkout_syscore_ops = { - .suspend = exynos_clkout_suspend, - .resume = exynos_clkout_resume, -}; + if (!dev->parent) { + dev_err(dev, "not instantiated from MFD\n"); + return -EINVAL; + } + + match = of_match_device(exynos_clkout_ids, dev->parent); + if (!match) { + dev_err(dev, "cannot match parent device\n"); + return -EINVAL; + } + variant = match->data; -static void __init exynos_clkout_init(struct device_node *node, u32 mux_mask) + *mux_mask = variant->mux_mask; + + return 0; +} + +static int exynos_clkout_probe(struct platform_device *pdev) { const char *parent_names[EXYNOS_CLKOUT_PARENTS]; struct clk *parents[EXYNOS_CLKOUT_PARENTS]; - int parent_count; - int ret; - int i; + struct exynos_clkout *clkout; + int parent_count, ret, i; + u32 mux_mask; - clkout = kzalloc(struct_size(clkout, data.hws, EXYNOS_CLKOUT_NR_CLKS), - GFP_KERNEL); + clkout = devm_kzalloc(&pdev->dev, + struct_size(clkout, data.hws, EXYNOS_CLKOUT_NR_CLKS), + GFP_KERNEL); if (!clkout) - return; + return -ENOMEM; + + ret = exynos_clkout_match_parent_dev(&pdev->dev, &mux_mask); + if (ret) + return ret; + + clkout->np = pdev->dev.of_node; + if (!clkout->np) { + /* + * pdev->dev.parent was checked by exynos_clkout_match_parent_dev() + * so it is not NULL. + */ + clkout->np = pdev->dev.parent->of_node; + } + + platform_set_drvdata(pdev, clkout); spin_lock_init(&clkout->slock); @@ -71,7 +136,7 @@ static void __init exynos_clkout_init(struct device_node *node, u32 mux_mask) char name[] = "clkoutXX"; snprintf(name, sizeof(name), "clkout%d", i); - parents[i] = of_clk_get_by_name(node, name); + parents[i] = of_clk_get_by_name(clkout->np, name); if (IS_ERR(parents[i])) { parent_names[i] = "none"; continue; @@ -82,11 +147,13 @@ static void __init exynos_clkout_init(struct device_node *node, u32 mux_mask) } if (!parent_count) - goto free_clkout; + return -EINVAL; - clkout->reg = of_iomap(node, 0); - if (!clkout->reg) + clkout->reg = of_iomap(clkout->np, 0); + if (!clkout->reg) { + ret = -ENODEV; goto clks_put; + } clkout->gate.reg = clkout->reg + EXYNOS_PMU_DEBUG_REG; clkout->gate.bit_idx = EXYNOS_CLKOUT_DISABLE_SHIFT; @@ -103,17 +170,17 @@ static void __init exynos_clkout_init(struct device_node *node, u32 mux_mask) &clk_mux_ops, NULL, NULL, &clkout->gate.hw, &clk_gate_ops, CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT); - if (IS_ERR(clkout->data.hws[0])) + if (IS_ERR(clkout->data.hws[0])) { + ret = PTR_ERR(clkout->data.hws[0]); goto err_unmap; + } clkout->data.num = EXYNOS_CLKOUT_NR_CLKS; - ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, &clkout->data); + ret = of_clk_add_hw_provider(clkout->np, of_clk_hw_onecell_get, &clkout->data); if (ret) goto err_clk_unreg; - register_syscore_ops(&exynos_clkout_syscore_ops); - - return; + return 0; err_clk_unreg: clk_hw_unregister(clkout->data.hws[0]); @@ -123,38 +190,56 @@ clks_put: for (i = 0; i < EXYNOS_CLKOUT_PARENTS; ++i) if (!IS_ERR(parents[i])) clk_put(parents[i]); -free_clkout: - kfree(clkout); - pr_err("%s: failed to register clkout clock\n", __func__); + dev_err(&pdev->dev, "failed to register clkout clock\n"); + + return ret; } -/* - * We use CLK_OF_DECLARE_DRIVER initialization method to avoid setting - * the OF_POPULATED flag on the pmu device tree node, so later the - * Exynos PMU platform device can be properly probed with PMU driver. - */ +static int exynos_clkout_remove(struct platform_device *pdev) +{ + struct exynos_clkout *clkout = platform_get_drvdata(pdev); + + of_clk_del_provider(clkout->np); + clk_hw_unregister(clkout->data.hws[0]); + iounmap(clkout->reg); + + return 0; +} -static void __init exynos4_clkout_init(struct device_node *node) +static int exynos_clkout_suspend(struct device *dev) { - exynos_clkout_init(node, EXYNOS4_CLKOUT_MUX_MASK); + struct exynos_clkout *clkout = dev_get_drvdata(dev); + + clkout->pmu_debug_save = readl(clkout->reg + EXYNOS_PMU_DEBUG_REG); + + return 0; } -CLK_OF_DECLARE_DRIVER(exynos4210_clkout, "samsung,exynos4210-pmu", - exynos4_clkout_init); -CLK_OF_DECLARE_DRIVER(exynos4412_clkout, "samsung,exynos4412-pmu", - exynos4_clkout_init); -CLK_OF_DECLARE_DRIVER(exynos3250_clkout, "samsung,exynos3250-pmu", - exynos4_clkout_init); - -static void __init exynos5_clkout_init(struct device_node *node) + +static int exynos_clkout_resume(struct device *dev) { - exynos_clkout_init(node, EXYNOS5_CLKOUT_MUX_MASK); + struct exynos_clkout *clkout = dev_get_drvdata(dev); + + writel(clkout->pmu_debug_save, clkout->reg + EXYNOS_PMU_DEBUG_REG); + + return 0; } -CLK_OF_DECLARE_DRIVER(exynos5250_clkout, "samsung,exynos5250-pmu", - exynos5_clkout_init); -CLK_OF_DECLARE_DRIVER(exynos5410_clkout, "samsung,exynos5410-pmu", - exynos5_clkout_init); -CLK_OF_DECLARE_DRIVER(exynos5420_clkout, "samsung,exynos5420-pmu", - exynos5_clkout_init); -CLK_OF_DECLARE_DRIVER(exynos5433_clkout, "samsung,exynos5433-pmu", - exynos5_clkout_init); + +static SIMPLE_DEV_PM_OPS(exynos_clkout_pm_ops, exynos_clkout_suspend, + exynos_clkout_resume); + +static struct platform_driver exynos_clkout_driver = { + .driver = { + .name = "exynos-clkout", + .of_match_table = exynos_clkout_ids, + .pm = &exynos_clkout_pm_ops, + }, + .probe = exynos_clkout_probe, + .remove = exynos_clkout_remove, +}; +module_platform_driver(exynos_clkout_driver); + +MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>"); +MODULE_AUTHOR("Tomasz Figa <tomasz.figa@gmail.com>"); +MODULE_DESCRIPTION("Samsung Exynos clock output driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/cpuidle/cpuidle-big_little.c b/drivers/cpuidle/cpuidle-big_little.c index 7f8ddc04342d..abe51185f243 100644 --- a/drivers/cpuidle/cpuidle-big_little.c +++ b/drivers/cpuidle/cpuidle-big_little.c @@ -155,8 +155,7 @@ static int __init bl_idle_driver_init(struct cpuidle_driver *drv, int part_id) static const struct of_device_id compatible_machine_match[] = { { .compatible = "arm,vexpress,v2p-ca15_a7" }, - { .compatible = "samsung,exynos5420" }, - { .compatible = "samsung,exynos5800" }, + { .compatible = "google,peach" }, {}, }; diff --git a/drivers/soc/samsung/exynos-pmu.c b/drivers/soc/samsung/exynos-pmu.c index 17304fa18429..a18c93a4646c 100644 --- a/drivers/soc/samsung/exynos-pmu.c +++ b/drivers/soc/samsung/exynos-pmu.c @@ -8,6 +8,7 @@ #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_device.h> +#include <linux/mfd/core.h> #include <linux/mfd/syscon.h> #include <linux/platform_device.h> #include <linux/delay.h> @@ -97,6 +98,10 @@ static const struct of_device_id exynos_pmu_of_device_ids[] = { { /*sentinel*/ }, }; +static const struct mfd_cell exynos_pmu_devs[] = { + { .name = "exynos-clkout", }, +}; + struct regmap *exynos_get_pmu_regmap(void) { struct device_node *np = of_find_matching_node(NULL, @@ -110,6 +115,7 @@ EXPORT_SYMBOL_GPL(exynos_get_pmu_regmap); static int exynos_pmu_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + int ret; pmu_base_addr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pmu_base_addr)) @@ -128,6 +134,11 @@ static int exynos_pmu_probe(struct platform_device *pdev) platform_set_drvdata(pdev, pmu_context); + ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, exynos_pmu_devs, + ARRAY_SIZE(exynos_pmu_devs), NULL, 0, NULL); + if (ret) + return ret; + if (devm_of_platform_populate(dev)) dev_err(dev, "Error populating children, reboot and poweroff might not work properly\n"); diff --git a/drivers/soc/samsung/exynos5422-asv.c b/drivers/soc/samsung/exynos5422-asv.c index 01bb3050d678..ca409a976e34 100644 --- a/drivers/soc/samsung/exynos5422-asv.c +++ b/drivers/soc/samsung/exynos5422-asv.c @@ -383,7 +383,7 @@ static int __asv_offset_voltage(unsigned int index) return 25000; default: return 0; - }; + } } static void exynos5422_asv_offset_voltage_setup(struct exynos_asv *asv) diff --git a/drivers/soc/samsung/s3c-pm-check.c b/drivers/soc/samsung/s3c-pm-check.c index ff3e099fc208..439d5c372512 100644 --- a/drivers/soc/samsung/s3c-pm-check.c +++ b/drivers/soc/samsung/s3c-pm-check.c @@ -151,7 +151,7 @@ static inline int in_region(void *ptr, int size, void *what, size_t whatsz) /** * s3c_pm_runcheck() - helper to check a resource on restore. * @res: The resource to check - * @vak: Pointer to list of CRC32 values to check. + * @val: Pointer to list of CRC32 values to check. * * Called from the s3c_pm_check_restore() via s3c_pm_run_sysram(), this * function runs the given memory resource checking it against the stored diff --git a/include/linux/serial_s3c.h b/include/linux/serial_s3c.h index 463ed28d2b27..ca2c5393dc6b 100644 --- a/include/linux/serial_s3c.h +++ b/include/linux/serial_s3c.h @@ -254,7 +254,7 @@ * serial port * * the pointer is setup by the machine specific initialisation from the - * arch/arm/mach-s3c2410/ directory. + * arch/arm/mach-s3c/ directory. */ struct s3c2410_uartcfg { |