Commit f7c8faed authored by Olof Johansson's avatar Olof Johansson
Browse files

Merge branch 'next/devel-samsung' of... 

Merge branch 'next/devel-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc

* 'next/devel-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: fix cycle count for periodic mode of clock event timers
  ARM: EXYNOS: add support JPEG
  ARM: EXYNOS: Add DMC1, allow PPMU access for DMC
  ARM: SAMSUNG: Correct MIPI-CSIS io memory resource definition
  ARM: SAMSUNG: fix __init attribute on regarding s3c_set_platdata()
  ARM: SAMSUNG: Add __init attribute to samsung_bl_set()
  ARM: S5PV210: Add usb otg phy control
  ARM: S3C64XX: Add usb otg phy control
  ARM: EXYNOS: Enable l2 configuration through device tree
  ARM: EXYNOS: remove useless code to save/restore L2
  ARM: EXYNOS: save L2 settings during bootup
  ARM: S5P: add L2 early resume code
  ARM: EXYNOS: Add support AFTR mode on EXYNOS4210
  ARM: SAMSUNG: use spin_lock_irqsave() in clk_{enable,disable}
  ARM: S3C64XX: Define some additional always off clocks
  ARM: S3C64XX: Reduce residency requirement for cpuidle WFI mode
  ARM: SAMSUNG: Add a callback 'notify_after' for PWM backlight control
  ARM: SAMSUNG: add G2D to plat-s5p and mach-exynos
  ARM: S3C64XX: Gate some more clocks by default
  ARM: S3C64XX: Add basic cpuidle driver
parents acf34608 4d2e4d7f

arch/arm/mach-exynos/clock.c

+5 −0
Original line number Diff line number Diff line
@@ -471,6 +471,11 @@ static struct clk init_clocks_off[] = { 
		.devname	= "s5p-mipi-csis.1",

		.enable		= exynos4_clk_ip_cam_ctrl,

		.ctrlbit	= (1 << 5),

	}, {

		.name		= "jpeg",

		.id		= 0,

		.enable		= exynos4_clk_ip_cam_ctrl,

		.ctrlbit	= (1 << 6),

	}, {

		.name		= "fimc",

		.devname	= "exynos4-fimc.0",

arch/arm/mach-exynos/common.c

+47 −13
Original line number Diff line number Diff line
@@ -26,10 +26,12 @@ 
#include <asm/hardware/gic.h>

#include <asm/mach/map.h>

#include <asm/mach/irq.h>

#include <asm/cacheflush.h>



#include <mach/regs-irq.h>

#include <mach/regs-pmu.h>

#include <mach/regs-gpio.h>

#include <mach/pmu.h>



#include <plat/cpu.h>

#include <plat/clock.h>
@@ -45,6 +47,8 @@ 
#include <plat/regs-serial.h>



#include "common.h"

#define L2_AUX_VAL 0x7C470001

#define L2_AUX_MASK 0xC200ffff



static const char name_exynos4210[] = "EXYNOS4210";

static const char name_exynos4212[] = "EXYNOS4212";
@@ -173,7 +177,12 @@ static struct map_desc exynos4_iodesc[] __initdata = { 
	}, {

		.virtual	= (unsigned long)S5P_VA_DMC0,

		.pfn		= __phys_to_pfn(EXYNOS4_PA_DMC0),

		.length		= SZ_4K,

		.length		= SZ_64K,

		.type		= MT_DEVICE,

	}, {

		.virtual	= (unsigned long)S5P_VA_DMC1,

		.pfn		= __phys_to_pfn(EXYNOS4_PA_DMC1),

		.length		= SZ_64K,

		.type		= MT_DEVICE,

	}, {

		.virtual	= (unsigned long)S3C_VA_USB_HSPHY,
@@ -433,23 +442,48 @@ core_initcall(exynos4_core_init); 
#ifdef CONFIG_CACHE_L2X0

static int __init exynos4_l2x0_cache_init(void)

{

	/* TAG, Data Latency Control: 2cycle */

	__raw_writel(0x110, S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);

	int ret;

	ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK);

	if (!ret) {

		l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);

		clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));

		return 0;

	}



	if (soc_is_exynos4210())

		__raw_writel(0x110, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);

	else if (soc_is_exynos4212() || soc_is_exynos4412())

		__raw_writel(0x120, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);

	if (!(__raw_readl(S5P_VA_L2CC + L2X0_CTRL) & 0x1)) {

		l2x0_saved_regs.phy_base = EXYNOS4_PA_L2CC;

		/* TAG, Data Latency Control: 2 cycles */

		l2x0_saved_regs.tag_latency = 0x110;



		if (soc_is_exynos4212() || soc_is_exynos4412())

			l2x0_saved_regs.data_latency = 0x120;

		else

			l2x0_saved_regs.data_latency = 0x110;



		l2x0_saved_regs.prefetch_ctrl = 0x30000007;

		l2x0_saved_regs.pwr_ctrl =

			(L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN);



		l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);



		__raw_writel(l2x0_saved_regs.tag_latency,

				S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);

		__raw_writel(l2x0_saved_regs.data_latency,

				S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);



		/* L2X0 Prefetch Control */

	__raw_writel(0x30000007, S5P_VA_L2CC + L2X0_PREFETCH_CTRL);

		__raw_writel(l2x0_saved_regs.prefetch_ctrl,

				S5P_VA_L2CC + L2X0_PREFETCH_CTRL);



		/* L2X0 Power Control */

	__raw_writel(L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN,

		__raw_writel(l2x0_saved_regs.pwr_ctrl,

				S5P_VA_L2CC + L2X0_POWER_CTRL);



	l2x0_init(S5P_VA_L2CC, 0x7C470001, 0xC200ffff);

		clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));

		clean_dcache_area(&l2x0_saved_regs, sizeof(struct l2x0_regs));

	}



	l2x0_init(S5P_VA_L2CC, L2_AUX_VAL, L2_AUX_MASK);

	return 0;

}

arch/arm/mach-exynos/cpuidle.c

+147 −4
Original line number Diff line number Diff line
@@ -11,25 +11,53 @@ 
#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/cpuidle.h>

#include <linux/cpu_pm.h>

#include <linux/io.h>

#include <linux/export.h>

#include <linux/time.h>



#include <asm/proc-fns.h>

#include <asm/smp_scu.h>

#include <asm/suspend.h>

#include <asm/unified.h>

#include <mach/regs-pmu.h>

#include <mach/pmu.h>



#include <plat/cpu.h>



#define REG_DIRECTGO_ADDR	(samsung_rev() == EXYNOS4210_REV_1_1 ? \

			S5P_INFORM7 : (samsung_rev() == EXYNOS4210_REV_1_0 ? \

			(S5P_VA_SYSRAM + 0x24) : S5P_INFORM0))

#define REG_DIRECTGO_FLAG	(samsung_rev() == EXYNOS4210_REV_1_1 ? \

			S5P_INFORM6 : (samsung_rev() == EXYNOS4210_REV_1_0 ? \

			(S5P_VA_SYSRAM + 0x20) : S5P_INFORM1))



#define S5P_CHECK_AFTR		0xFCBA0D10



static int exynos4_enter_idle(struct cpuidle_device *dev,

			struct cpuidle_driver *drv,

			      int index);

static int exynos4_enter_lowpower(struct cpuidle_device *dev,

				struct cpuidle_driver *drv,

				int index);



static struct cpuidle_state exynos4_cpuidle_set[] = {

static struct cpuidle_state exynos4_cpuidle_set[] __initdata = {

	[0] = {

		.enter			= exynos4_enter_idle,

		.exit_latency		= 1,

		.target_residency	= 100000,

		.flags			= CPUIDLE_FLAG_TIME_VALID,

		.name			= "IDLE",

		.name			= "C0",

		.desc			= "ARM clock gating(WFI)",

	},

	[1] = {

		.enter			= exynos4_enter_lowpower,

		.exit_latency		= 300,

		.target_residency	= 100000,

		.flags			= CPUIDLE_FLAG_TIME_VALID,

		.name			= "C1",

		.desc			= "ARM power down",

	},

};



static DEFINE_PER_CPU(struct cpuidle_device, exynos4_cpuidle_device);
@@ -39,6 +67,99 @@ static struct cpuidle_driver exynos4_idle_driver = { 
	.owner		= THIS_MODULE,

};



/* Ext-GIC nIRQ/nFIQ is the only wakeup source in AFTR */

static void exynos4_set_wakeupmask(void)

{

	__raw_writel(0x0000ff3e, S5P_WAKEUP_MASK);

}



static unsigned int g_pwr_ctrl, g_diag_reg;



static void save_cpu_arch_register(void)

{

	/*read power control register*/

	asm("mrc p15, 0, %0, c15, c0, 0" : "=r"(g_pwr_ctrl) : : "cc");

	/*read diagnostic register*/

	asm("mrc p15, 0, %0, c15, c0, 1" : "=r"(g_diag_reg) : : "cc");

	return;

}



static void restore_cpu_arch_register(void)

{

	/*write power control register*/

	asm("mcr p15, 0, %0, c15, c0, 0" : : "r"(g_pwr_ctrl) : "cc");

	/*write diagnostic register*/

	asm("mcr p15, 0, %0, c15, c0, 1" : : "r"(g_diag_reg) : "cc");

	return;

}



static int idle_finisher(unsigned long flags)

{

	cpu_do_idle();

	return 1;

}



static int exynos4_enter_core0_aftr(struct cpuidle_device *dev,

				struct cpuidle_driver *drv,

				int index)

{

	struct timeval before, after;

	int idle_time;

	unsigned long tmp;



	local_irq_disable();

	do_gettimeofday(&before);



	exynos4_set_wakeupmask();



	/* Set value of power down register for aftr mode */

	exynos4_sys_powerdown_conf(SYS_AFTR);



	__raw_writel(virt_to_phys(s3c_cpu_resume), REG_DIRECTGO_ADDR);

	__raw_writel(S5P_CHECK_AFTR, REG_DIRECTGO_FLAG);



	save_cpu_arch_register();



	/* Setting Central Sequence Register for power down mode */

	tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);

	tmp &= ~S5P_CENTRAL_LOWPWR_CFG;

	__raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);



	cpu_pm_enter();

	cpu_suspend(0, idle_finisher);



#ifdef CONFIG_SMP

	scu_enable(S5P_VA_SCU);

#endif

	cpu_pm_exit();



	restore_cpu_arch_register();



	/*

	 * If PMU failed while entering sleep mode, WFI will be

	 * ignored by PMU and then exiting cpu_do_idle().

	 * S5P_CENTRAL_LOWPWR_CFG bit will not be set automatically

	 * in this situation.

	 */

	tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);

	if (!(tmp & S5P_CENTRAL_LOWPWR_CFG)) {

		tmp |= S5P_CENTRAL_LOWPWR_CFG;

		__raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);

	}



	/* Clear wakeup state register */

	__raw_writel(0x0, S5P_WAKEUP_STAT);



	do_gettimeofday(&after);



	local_irq_enable();

	idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +

		    (after.tv_usec - before.tv_usec);



	dev->last_residency = idle_time;

	return index;

}



static int exynos4_enter_idle(struct cpuidle_device *dev,

				struct cpuidle_driver *drv,

				int index)
@@ -60,6 +181,22 @@ static int exynos4_enter_idle(struct cpuidle_device *dev, 
	return index;

}



static int exynos4_enter_lowpower(struct cpuidle_device *dev,

				struct cpuidle_driver *drv,

				int index)

{

	int new_index = index;



	/* This mode only can be entered when other core's are offline */

	if (num_online_cpus() > 1)

		new_index = drv->safe_state_index;



	if (new_index == 0)

		return exynos4_enter_idle(dev, drv, new_index);

	else

		return exynos4_enter_core0_aftr(dev, drv, new_index);

}



static int __init exynos4_init_cpuidle(void)

{

	int i, max_cpuidle_state, cpu_id;
@@ -74,19 +211,25 @@ static int __init exynos4_init_cpuidle(void) 
		memcpy(&drv->states[i], &exynos4_cpuidle_set[i],

				sizeof(struct cpuidle_state));

	}

	drv->safe_state_index = 0;

	cpuidle_register_driver(&exynos4_idle_driver);



	for_each_cpu(cpu_id, cpu_online_mask) {

		device = &per_cpu(exynos4_cpuidle_device, cpu_id);

		device->cpu = cpu_id;



		device->state_count = drv->state_count;

		if (cpu_id == 0)

			device->state_count = (sizeof(exynos4_cpuidle_set) /

					       sizeof(struct cpuidle_state));

		else

			device->state_count = 1;	/* Support IDLE only */



		if (cpuidle_register_device(device)) {

			printk(KERN_ERR "CPUidle register device failed\n,");

			return -EIO;

		}

	}



	return 0;

}

device_initcall(exynos4_init_cpuidle);

arch/arm/mach-exynos/include/mach/map.h

+7 −0
Original line number Diff line number Diff line
@@ -31,6 +31,10 @@ 
#define EXYNOS4_PA_FIMC2		0x11820000

#define EXYNOS4_PA_FIMC3		0x11830000



#define EXYNOS4_PA_JPEG			0x11840000



#define EXYNOS4_PA_G2D			0x12800000



#define EXYNOS4_PA_I2S0			0x03830000

#define EXYNOS4_PA_I2S1			0xE3100000

#define EXYNOS4_PA_I2S2			0xE2A00000
@@ -57,6 +61,7 @@ 
#define EXYNOS4_PA_KEYPAD		0x100A0000



#define EXYNOS4_PA_DMC0			0x10400000

#define EXYNOS4_PA_DMC1			0x10410000



#define EXYNOS4_PA_COMBINER		0x10440000
@@ -162,6 +167,8 @@ 
#define S5P_PA_FIMC1			EXYNOS4_PA_FIMC1

#define S5P_PA_FIMC2			EXYNOS4_PA_FIMC2

#define S5P_PA_FIMC3			EXYNOS4_PA_FIMC3

#define S5P_PA_JPEG			EXYNOS4_PA_JPEG

#define S5P_PA_G2D			EXYNOS4_PA_G2D

#define S5P_PA_FIMD0			EXYNOS4_PA_FIMD0

#define S5P_PA_HDMI			EXYNOS4_PA_HDMI

#define S5P_PA_IIC_HDMIPHY		EXYNOS4_PA_IIC_HDMIPHY

arch/arm/mach-exynos/include/mach/pmu.h

+2 −0
Original line number Diff line number Diff line
@@ -22,11 +22,13 @@ enum sys_powerdown { 
	NUM_SYS_POWERDOWN,

};



extern unsigned long l2x0_regs_phys;

struct exynos4_pmu_conf {

	void __iomem *reg;

	unsigned int val[NUM_SYS_POWERDOWN];

};



extern void exynos4_sys_powerdown_conf(enum sys_powerdown mode);

extern void s3c_cpu_resume(void);



#endif /* __ASM_ARCH_PMU_H */

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