Hi, On Monday, June 27, 2011, Chanwoo Choi wrote: > Use the generic power domains support to implement support for > power domain on EXYNOS4210. > > I refer to the following patch to implement what configure > the clock-gating control register for block to turn off/on: > http://git.infradead.org/users/kmpark/linux-2.6-samsung/commit/39a81876d034dcbdc2a4c4c4b847b3b49e38870c > > This patch is based on following "pm-domains" branch. > http://git.kernel.org/?p=linux/kernel/git/rafael/suspend-2.6.git;a=shortlog;h=refs/heads/pm-domains > > Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx> > Signed-off-by: MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx> > Signed-off-by: Kyungmin.park <kyungmin.park@xxxxxxxxxxx> > --- > arch/arm/mach-exynos4/Kconfig | 1 + > arch/arm/mach-exynos4/Makefile | 1 + > arch/arm/mach-exynos4/include/mach/pm-exynos4210.h | 69 ++++++++ > arch/arm/mach-exynos4/include/mach/regs-clock.h | 8 + > arch/arm/mach-exynos4/mach-nuri.c | 20 +++ > arch/arm/mach-exynos4/pm-exynos4210.c | 170 ++++++++++++++++++++ > arch/arm/plat-samsung/include/plat/pd.h | 3 +- > 7 files changed, 271 insertions(+), 1 deletions(-) > create mode 100644 arch/arm/mach-exynos4/include/mach/pm-exynos4210.h > create mode 100644 arch/arm/mach-exynos4/pm-exynos4210.c > > diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig > index 1435fc3..266e7f6 100644 > --- a/arch/arm/mach-exynos4/Kconfig > +++ b/arch/arm/mach-exynos4/Kconfig > @@ -183,6 +183,7 @@ config MACH_NURI > select EXYNOS4_SETUP_SDHCI > select EXYNOS4_SETUP_USB_PHY > select SAMSUNG_DEV_PWM > + select PM_GENERIC_DOMAINS That should be "select PM_GENERIC_DOMAINS if PM". Otherwise it will be selected even for CONFIG_PM unset. > help > Machine support for Samsung Mobile NURI Board. > > diff --git a/arch/arm/mach-exynos4/Makefile b/arch/arm/mach-exynos4/Makefile > index 60fe5ec..0e9461f 100644 > --- a/arch/arm/mach-exynos4/Makefile > +++ b/arch/arm/mach-exynos4/Makefile > @@ -17,6 +17,7 @@ obj-$(CONFIG_CPU_EXYNOS4210) += setup-i2c0.o irq-eint.o dma.o > obj-$(CONFIG_PM) += pm.o sleep.o > obj-$(CONFIG_CPU_FREQ) += cpufreq.o > obj-$(CONFIG_CPU_IDLE) += cpuidle.o > +obj-$(CONFIG_CPU_EXYNOS4210) += pm-exynos4210.o > > obj-$(CONFIG_SMP) += platsmp.o headsmp.o > > diff --git a/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h b/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h > new file mode 100644 > index 0000000..ff924a8 > --- /dev/null > +++ b/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h > @@ -0,0 +1,69 @@ > +/* linux/arch/arm/mach-exynos4/include/mach/pm-exynos4.h > + * > + * Exynos4 Power management support > + * > + * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. > + * http://www.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. > + */ > + > +#ifndef __PM_EXYNOS4210_H__ > +#define __PM_EXYNOS4210_H__ > + > +#include <linux/pm_domain.h> > +#include <plat/pd.h> > + > +struct platform_device; > + > +struct exynos4210_pm_domain { > + struct generic_pm_domain genpd; > + > + const char *name; > + void __iomem *base; > + unsigned long gate_mask; > + int boot_on; > +}; > + > +static inline struct exynos4210_pm_domain *to_exynos4210_pd( > + struct generic_pm_domain *pd) > +{ > + return container_of(pd, struct exynos4210_pm_domain, genpd); > +} > + > +#ifdef CONFIG_PM > +extern struct exynos4210_pm_domain exynos4210_pd_list[PD_MAX_NUM]; > +#define EXYNOS4210_MFC (&exynos4210_pd_list[PD_MFC]) > +#define EXYNOS4210_G3D (&exynos4210_pd_list[PD_G3D]) > +#define EXYNOS4210_LCD0 (&exynos4210_pd_list[PD_LCD0]) > +#define EXYNOS4210_LCD1 (&exynos4210_pd_list[PD_LCD1]) > +#define EXYNOS4210_TV (&exynos4210_pd_list[PD_TV]) > +#define EXYNOS4210_CAM (&exynos4210_pd_list[PD_CAM]) > +#define EXYNOS4210_GPS (&exynos4210_pd_list[PD_GPS]) > + > +int exynos4210_pd_init(struct exynos4210_pm_domain *domain); > +int exynos4210_add_device_to_domain(struct exynos4210_pm_domain *domain, > + struct platform_device *pdev); > +#else > +#define EXYNOS4210_MFC NULL > +#define EXYNOS4210_G3D NULL > +#define EXYNOS4210_LCD0 NULL > +#define EXYNOS4210_LCD1 NULL > +#define EXYNOS4210_TV NULL > +#define EXYNOS4210_CAM NULL > +#define EXYNOS4210_GPS NULL > + > +static inline int exynos4210_pd_init(struct exynos4210_pm_domain *domain) > +{ > + return 0; > +} > +static inline int exynos4_add_device_to_domain(struct exynos4210_pm_domain *domain, > + struct platform_device *pdev) > +{ > + return 0; > +} > +#endif /* CONFIG_PM */ > + > +#endif /* __PM_EXYNOS4210_H__ */ > diff --git a/arch/arm/mach-exynos4/include/mach/regs-clock.h b/arch/arm/mach-exynos4/include/mach/regs-clock.h > index 6e311c1..bc0fda9 100644 > --- a/arch/arm/mach-exynos4/include/mach/regs-clock.h > +++ b/arch/arm/mach-exynos4/include/mach/regs-clock.h > @@ -171,6 +171,14 @@ > #define S5P_CLKDIV_BUS_GPLR_SHIFT (4) > #define S5P_CLKDIV_BUS_GPLR_MASK (0x7 << S5P_CLKDIV_BUS_GPLR_SHIFT) > > +#define S5P_CLKGATE_BLOCK_CAM (1<<0) > +#define S5P_CLKGATE_BLOCK_TV (1<<1) > +#define S5P_CLKGATE_BLOCK_MFC (1<<2) > +#define S5P_CLKGATE_BLOCK_G3D (1<<3) > +#define S5P_CLKGATE_BLOCK_LCD0 (1<<4) > +#define S5P_CLKGATE_BLOCK_LCD1 (1<<5) > +#define S5P_CLKGATE_BLOCK_GPS (1<<7) > + > /* Compatibility defines and inclusion */ > > #include <mach/regs-pmu.h> > diff --git a/arch/arm/mach-exynos4/mach-nuri.c b/arch/arm/mach-exynos4/mach-nuri.c > index 642702b..805c6d5 100644 > --- a/arch/arm/mach-exynos4/mach-nuri.c > +++ b/arch/arm/mach-exynos4/mach-nuri.c > @@ -37,6 +37,7 @@ > #include <plat/iic.h> > > #include <mach/map.h> > +#include <mach/pm-exynos4210.h> > > /* Following are default values for UCON, ULCON and UFCON UART registers */ > #define NURI_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \ > @@ -376,6 +377,23 @@ static struct platform_device *nuri_devices[] __initdata = { > &nuri_backlight_device, > }; > > +static void __init nuri_power_domain_init(void) > +{ > + int i; > + > + for (i = 0 ; i < PD_MAX_NUM ; i++) > + exynos4210_pd_init(&exynos4210_pd_list[i]); > + > + /* Add device to power-domain */ > + exynos4210_add_device_to_domain(EXYNOS4210_MFC, NULL); > + exynos4210_add_device_to_domain(EXYNOS4210_G3D, NULL); > + exynos4210_add_device_to_domain(EXYNOS4210_LCD0, &nuri_lcd_device); > + exynos4210_add_device_to_domain(EXYNOS4210_LCD1, NULL); > + exynos4210_add_device_to_domain(EXYNOS4210_TV, NULL); > + exynos4210_add_device_to_domain(EXYNOS4210_CAM, NULL); > + exynos4210_add_device_to_domain(EXYNOS4210_GPS, NULL); It seems the calls with the second NULL argument are redundant. The rest looks OK to me. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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