* [PATCHv3] ARM: EXYNOS4: Support for generic I/O power domains on EXYNOS4210
@ 2011-07-08 1:24 Chanwoo Choi
2011-07-08 5:28 ` Kukjin Kim
0 siblings, 1 reply; 5+ messages in thread
From: Chanwoo Choi @ 2011-07-08 1:24 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Kukjin Kim, Kyungmin Park, MyungJoo Ham, Sylwester Nawrocki,
linux-pm, linux-samsung-soc, linux-kernel
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@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin.park <kyungmin.park@samsung.com>
---
arch/arm/mach-exynos4/Kconfig | 1 +
arch/arm/mach-exynos4/Makefile | 1 +
arch/arm/mach-exynos4/include/mach/pm-exynos4210.h | 53 ++++++
arch/arm/mach-exynos4/include/mach/regs-clock.h | 8 +
arch/arm/mach-exynos4/mach-nuri.c | 18 ++
arch/arm/mach-exynos4/pm-exynos4210.c | 184 ++++++++++++++++++++
6 files changed, 265 insertions(+), 0 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..c5357b5 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 if PM
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..ab09034
--- /dev/null
+++ b/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h
@@ -0,0 +1,53 @@
+/* linux/arch/arm/mach-exynos4/include/mach/pm-exynos4.h
+ *
+ * Exynos4 Power management support
+ *
+ * Copyright (c) 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;
+ u32 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_mfc;
+extern struct exynos4210_pm_domain exynos4210_pd_g3d;
+extern struct exynos4210_pm_domain exynos4210_pd_lcd0;
+extern struct exynos4210_pm_domain exynos4210_pd_lcd1;
+extern struct exynos4210_pm_domain exynos4210_pd_tv;
+extern struct exynos4210_pm_domain exynos4210_pd_cam;
+extern struct exynos4210_pm_domain exynos4210_pd_gps;
+
+extern void exynos4210_init_pm_domain(struct exynos4210_pm_domain *exynos4210_pd);
+extern void exynos4210_add_device_to_domain(struct exynos4210_pm_domain *exynos4210_pd,
+ struct platform_device *pdev);
+#else
+#define exynos4210_init_pm_domain(pd) do { } while(0)
+#define exynos4_add_device_to_domain(pd, pdev) do { } while(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..816c6f4 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 +377,21 @@ static struct platform_device *nuri_devices[] __initdata = {
&nuri_backlight_device,
};
+static void __init nuri_power_domain_init(void)
+{
+ /* Initialize power-domain */
+ exynos4210_init_pm_domain(&exynos4210_pd_mfc);
+ exynos4210_init_pm_domain(&exynos4210_pd_g3d);
+ exynos4210_init_pm_domain(&exynos4210_pd_lcd0);
+ exynos4210_init_pm_domain(&exynos4210_pd_lcd1);
+ exynos4210_init_pm_domain(&exynos4210_pd_tv);
+ exynos4210_init_pm_domain(&exynos4210_pd_cam);
+ exynos4210_init_pm_domain(&exynos4210_pd_gps);
+
+ /* Add device to power-domain */
+ exynos4210_add_device_to_domain(&exynos4210_pd_lcd0, &nuri_lcd_device);
+}
+
static void __init nuri_map_io(void)
{
s5p_init_io(NULL, 0, S5P_VA_CHIPID);
@@ -398,6 +414,8 @@ static void __init nuri_machine_init(void)
/* Last */
platform_add_devices(nuri_devices, ARRAY_SIZE(nuri_devices));
+
+ nuri_power_domain_init();
}
MACHINE_START(NURI, "NURI")
diff --git a/arch/arm/mach-exynos4/pm-exynos4210.c b/arch/arm/mach-exynos4/pm-exynos4210.c
new file mode 100644
index 0000000..f44dcef
--- /dev/null
+++ b/arch/arm/mach-exynos4/pm-exynos4210.c
@@ -0,0 +1,184 @@
+/* linux/arch/arm/mach-exynos4/pm-exynos4210.c
+ *
+ * Exynos4210 Power management support
+ *
+ * Copyright (c) 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.
+ */
+
+#include <linux/pm.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
+#include <linux/io.h>
+
+#include <mach/regs-pmu.h>
+#include <mach/regs-clock.h>
+#include <mach/pm-exynos4210.h>
+
+#ifdef CONFIG_PM
+static DEFINE_SPINLOCK(clkgate_block_lock);
+
+static int pd_power_down(struct generic_pm_domain *genpd)
+{
+ struct exynos4210_pm_domain *exynos4210_pd = to_exynos4210_pd(genpd);
+ u32 timeout;
+
+ /* Disable the power of power-domain */
+ __raw_writel(0, exynos4210_pd->base);
+
+ /* Wait max 1ms */
+ timeout = 10;
+ while (__raw_readl(exynos4210_pd->base + 0x4) & S5P_INT_LOCAL_PWR_EN) {
+ if (timeout == 0) {
+ printk(KERN_ERR "Power domain %s disable failed.\n",
+ exynos4210_pd->name);
+ return -ETIMEDOUT;
+ }
+ timeout--;
+ udelay(100);
+ }
+
+ /* Configure the clock-gating control register for block to turn off */
+ if (exynos4210_pd->mask) {
+ unsigned long flags;
+ u32 reg;
+
+ spin_lock_irqsave(&clkgate_block_lock, flags);
+ reg = __raw_readl(S5P_CLKGATE_BLOCK);
+ reg &= ~exynos4210_pd->mask;
+ __raw_writel(reg, S5P_CLKGATE_BLOCK);
+ spin_unlock_irqrestore(&clkgate_block_lock, flags);
+ }
+
+ return 0;
+}
+
+static int pd_power_up(struct generic_pm_domain *genpd)
+{
+ struct exynos4210_pm_domain *exynos4210_pd = to_exynos4210_pd(genpd);
+ u32 timeout;
+
+ /* Enable power domain */
+ __raw_writel(S5P_INT_LOCAL_PWR_EN, exynos4210_pd->base);
+
+ /* Wait max 1ms */
+ timeout = 10;
+ while ((__raw_readl(exynos4210_pd->base + 0x4) & S5P_INT_LOCAL_PWR_EN)
+ != S5P_INT_LOCAL_PWR_EN) {
+ if (timeout == 0) {
+ printk(KERN_ERR "Power domain %s enable failed.\n",
+ exynos4210_pd->name);
+ return -ETIMEDOUT;
+ }
+ timeout--;
+ udelay(100);
+ }
+
+ /* Configure the clock-gating control register for block to turn on */
+ if (exynos4210_pd->mask) {
+ unsigned long flags;
+ u32 reg;
+
+ spin_lock_irqsave(&clkgate_block_lock, flags);
+ reg = __raw_readl(S5P_CLKGATE_BLOCK);
+ reg |= exynos4210_pd->mask;
+ __raw_writel(reg, S5P_CLKGATE_BLOCK);
+ spin_unlock_irqrestore(&clkgate_block_lock, flags);
+ }
+
+ return 0;
+}
+
+static bool pd_active_wakeup(struct device *dev)
+{
+ return true;
+}
+
+void exynos4210_init_pm_domain(struct exynos4210_pm_domain *exynos4210_pd)
+{
+ struct generic_pm_domain *genpd;
+
+ if (!exynos4210_pd)
+ return;
+
+ genpd = &exynos4210_pd->genpd;
+
+ pm_genpd_init(genpd, NULL, false);
+ genpd->stop_device = pm_clk_suspend;
+ genpd->start_device = pm_clk_resume;
+ genpd->active_wakeup = pd_active_wakeup;
+ genpd->power_off = pd_power_down;
+ genpd->power_on = pd_power_up;
+
+ if (exynos4210_pd->boot_on)
+ pd_power_up(&exynos4210_pd->genpd);
+}
+
+void exynos4210_add_device_to_domain(struct exynos4210_pm_domain *exynos4210_pd,
+ struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+
+ if (exynos4210_pd && pdev)
+ pm_genpd_add_device(&exynos4210_pd->genpd, dev);
+}
+
+struct exynos4210_pm_domain exynos4210_pd_mfc = {
+ .name = "PD_MFC",
+ .base = S5P_PMU_MFC_CONF,
+ .mask = S5P_CLKGATE_BLOCK_MFC,
+ .boot_on = 0,
+};
+
+struct exynos4210_pm_domain exynos4210_pd_g3d = {
+ .name = "PD_G3D",
+ .base = S5P_PMU_G3D_CONF,
+ .mask = S5P_CLKGATE_BLOCK_G3D,
+ .boot_on = 0,
+};
+
+struct exynos4210_pm_domain exynos4210_pd_lcd0 = {
+ .name = "PD_LCD0",
+ .base = S5P_PMU_LCD0_CONF,
+ .mask = S5P_CLKGATE_BLOCK_LCD0,
+ .boot_on = 1,
+};
+
+struct exynos4210_pm_domain exynos4210_pd_lcd1 = {
+ .name = "PD_LCD1",
+ .base = S5P_PMU_LCD1_CONF,
+ .mask = S5P_CLKGATE_BLOCK_LCD1,
+ .boot_on = 0,
+};
+
+struct exynos4210_pm_domain exynos4210_pd_tv = {
+ .name = "PD_TV",
+ .base = S5P_PMU_TV_CONF,
+ .mask = S5P_CLKGATE_BLOCK_TV,
+ .boot_on = 0,
+};
+
+struct exynos4210_pm_domain exynos4210_pd_cam = {
+ .name = "PD_CAM",
+ .base = S5P_PMU_CAM_CONF,
+ .mask = S5P_CLKGATE_BLOCK_CAM,
+ .boot_on = 0,
+};
+
+struct exynos4210_pm_domain exynos4210_pd_gps = {
+ .name = "PD_GPS",
+ .base = S5P_PMU_GPS_CONF,
+ .mask = S5P_CLKGATE_BLOCK_GPS,
+ .boot_on = 0,
+};
+
+#endif /* CONFIG_PM */
--
1.7.0.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
* RE: [PATCHv3] ARM: EXYNOS4: Support for generic I/O power domains on EXYNOS4210
2011-07-08 1:24 [PATCHv3] ARM: EXYNOS4: Support for generic I/O power domains on EXYNOS4210 Chanwoo Choi
@ 2011-07-08 5:28 ` Kukjin Kim
2011-07-08 6:19 ` Chanwoo Choi
0 siblings, 1 reply; 5+ messages in thread
From: Kukjin Kim @ 2011-07-08 5:28 UTC (permalink / raw)
To: 'Chanwoo Choi', 'Rafael J. Wysocki'
Cc: 'Kyungmin Park', 'MyungJoo Ham',
'Sylwester Nawrocki',
linux-pm, 'linux-samsung-soc', 'linux-kernel'
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
>
I think, this should be moved under "---"
> 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
>
Same as above.
> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
> Signed-off-by: Kyungmin.park <kyungmin.park@samsung.com>
Kyungmin Park?
> ---
> arch/arm/mach-exynos4/Kconfig | 1 +
> arch/arm/mach-exynos4/Makefile | 1 +
> arch/arm/mach-exynos4/include/mach/pm-exynos4210.h | 53 ++++++
> arch/arm/mach-exynos4/include/mach/regs-clock.h | 8 +
> arch/arm/mach-exynos4/mach-nuri.c | 18 ++
> arch/arm/mach-exynos4/pm-exynos4210.c | 184
> ++++++++++++++++++++
> 6 files changed, 265 insertions(+), 0 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..c5357b5 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 if PM
Do you _really_ think this should be under MACH_NURI?
> 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..ab09034
> --- /dev/null
> +++ b/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h
> @@ -0,0 +1,53 @@
> +/* linux/arch/arm/mach-exynos4/include/mach/pm-exynos4.h
According to your file name, should be linux/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h ?
> + *
> + * Exynos4 Power management support
Is this for EXYNOS4 or only EXYNOS4210?
> + *
> + * Copyright (c) 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;
> + u32 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_mfc;
> +extern struct exynos4210_pm_domain exynos4210_pd_g3d;
> +extern struct exynos4210_pm_domain exynos4210_pd_lcd0;
> +extern struct exynos4210_pm_domain exynos4210_pd_lcd1;
> +extern struct exynos4210_pm_domain exynos4210_pd_tv;
> +extern struct exynos4210_pm_domain exynos4210_pd_cam;
> +extern struct exynos4210_pm_domain exynos4210_pd_gps;
> +
> +extern void exynos4210_init_pm_domain(struct exynos4210_pm_domain
> *exynos4210_pd);
> +extern void exynos4210_add_device_to_domain(struct exynos4210_pm_domain
> *exynos4210_pd,
> + struct platform_device *pdev);
> +#else
> +#define exynos4210_init_pm_domain(pd) do { } while(0)
> +#define exynos4_add_device_to_domain(pd, pdev) do { } while(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)
The blank should be added around "<<" like (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)
Same...
> +
> /* Compatibility defines and inclusion */
>
> #include <mach/regs-pmu.h>
Hmm...how about if this is required, just add the inclusion in c file?
Actually, you added above in pm-exynos4210.c...
> diff --git a/arch/arm/mach-exynos4/mach-nuri.c b/arch/arm/mach-exynos4/mach-
> nuri.c
> index 642702b..816c6f4 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 +377,21 @@ static struct platform_device *nuri_devices[] __initdata = {
> &nuri_backlight_device,
> };
>
> +static void __init nuri_power_domain_init(void)
> +{
> + /* Initialize power-domain */
> + exynos4210_init_pm_domain(&exynos4210_pd_mfc);
> + exynos4210_init_pm_domain(&exynos4210_pd_g3d);
> + exynos4210_init_pm_domain(&exynos4210_pd_lcd0);
> + exynos4210_init_pm_domain(&exynos4210_pd_lcd1);
> + exynos4210_init_pm_domain(&exynos4210_pd_tv);
> + exynos4210_init_pm_domain(&exynos4210_pd_cam);
> + exynos4210_init_pm_domain(&exynos4210_pd_gps);
Hmm, is this needed only on NURI?
> +
> + /* Add device to power-domain */
> + exynos4210_add_device_to_domain(&exynos4210_pd_lcd0,
> &nuri_lcd_device);
> +}
> +
> static void __init nuri_map_io(void)
> {
> s5p_init_io(NULL, 0, S5P_VA_CHIPID);
> @@ -398,6 +414,8 @@ static void __init nuri_machine_init(void)
>
> /* Last */
> platform_add_devices(nuri_devices, ARRAY_SIZE(nuri_devices));
> +
> + nuri_power_domain_init();
> }
>
> MACHINE_START(NURI, "NURI")
> diff --git a/arch/arm/mach-exynos4/pm-exynos4210.c b/arch/arm/mach-
> exynos4/pm-exynos4210.c
> new file mode 100644
> index 0000000..f44dcef
> --- /dev/null
> +++ b/arch/arm/mach-exynos4/pm-exynos4210.c
> @@ -0,0 +1,184 @@
> +/* linux/arch/arm/mach-exynos4/pm-exynos4210.c
> + *
> + * Exynos4210 Power management support
> + *
> + * Copyright (c) 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.
> + */
> +
> +#include <linux/pm.h>
> +#include <linux/module.h>
> +#include <linux/delay.h>
> +#include <linux/err.h>
> +#include <linux/slab.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_domain.h>
> +#include <linux/io.h>
> +
> +#include <mach/regs-pmu.h>
As I said, so no need to add this inclusion in <mach/regs-clock.h>
> +#include <mach/regs-clock.h>
> +#include <mach/pm-exynos4210.h>
> +
> +#ifdef CONFIG_PM
> +static DEFINE_SPINLOCK(clkgate_block_lock);
> +
> +static int pd_power_down(struct generic_pm_domain *genpd)
> +{
> + struct exynos4210_pm_domain *exynos4210_pd =
> to_exynos4210_pd(genpd);
> + u32 timeout;
> +
> + /* Disable the power of power-domain */
> + __raw_writel(0, exynos4210_pd->base);
> +
> + /* Wait max 1ms */
> + timeout = 10;
> + while (__raw_readl(exynos4210_pd->base + 0x4) &
> S5P_INT_LOCAL_PWR_EN) {
> + if (timeout == 0) {
> + printk(KERN_ERR "Power domain %s disable failed.\n",
> + exynos4210_pd->name);
> + return -ETIMEDOUT;
> + }
> + timeout--;
> + udelay(100);
> + }
> +
> + /* Configure the clock-gating control register for block to turn off */
> + if (exynos4210_pd->mask) {
> + unsigned long flags;
> + u32 reg;
> +
> + spin_lock_irqsave(&clkgate_block_lock, flags);
> + reg = __raw_readl(S5P_CLKGATE_BLOCK);
> + reg &= ~exynos4210_pd->mask;
> + __raw_writel(reg, S5P_CLKGATE_BLOCK);
> + spin_unlock_irqrestore(&clkgate_block_lock, flags);
> + }
> +
> + return 0;
> +}
> +
> +static int pd_power_up(struct generic_pm_domain *genpd)
> +{
> + struct exynos4210_pm_domain *exynos4210_pd =
> to_exynos4210_pd(genpd);
> + u32 timeout;
> +
> + /* Enable power domain */
> + __raw_writel(S5P_INT_LOCAL_PWR_EN, exynos4210_pd->base);
> +
> + /* Wait max 1ms */
> + timeout = 10;
> + while ((__raw_readl(exynos4210_pd->base + 0x4) &
> S5P_INT_LOCAL_PWR_EN)
> + != S5P_INT_LOCAL_PWR_EN) {
> + if (timeout == 0) {
> + printk(KERN_ERR "Power domain %s enable failed.\n",
> + exynos4210_pd->name);
> + return -ETIMEDOUT;
> + }
> + timeout--;
> + udelay(100);
> + }
> +
> + /* Configure the clock-gating control register for block to turn on */
> + if (exynos4210_pd->mask) {
> + unsigned long flags;
> + u32 reg;
> +
> + spin_lock_irqsave(&clkgate_block_lock, flags);
> + reg = __raw_readl(S5P_CLKGATE_BLOCK);
> + reg |= exynos4210_pd->mask;
> + __raw_writel(reg, S5P_CLKGATE_BLOCK);
> + spin_unlock_irqrestore(&clkgate_block_lock, flags);
> + }
> +
> + return 0;
> +}
Would be better if you could add some common function for pd_power_up and _down...
I wonder why we need to add this for handling power domain not update current pd.
As you know, they are having same/similar purpose and functions...
> +
> +static bool pd_active_wakeup(struct device *dev)
> +{
> + return true;
> +}
> +
> +void exynos4210_init_pm_domain(struct exynos4210_pm_domain
> *exynos4210_pd)
> +{
> + struct generic_pm_domain *genpd;
> +
> + if (!exynos4210_pd)
> + return;
> +
> + genpd = &exynos4210_pd->genpd;
> +
> + pm_genpd_init(genpd, NULL, false);
> + genpd->stop_device = pm_clk_suspend;
> + genpd->start_device = pm_clk_resume;
> + genpd->active_wakeup = pd_active_wakeup;
> + genpd->power_off = pd_power_down;
> + genpd->power_on = pd_power_up;
> +
> + if (exynos4210_pd->boot_on)
> + pd_power_up(&exynos4210_pd->genpd);
> +}
> +
> +void exynos4210_add_device_to_domain(struct exynos4210_pm_domain
> *exynos4210_pd,
> + struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> +
> + if (exynos4210_pd && pdev)
> + pm_genpd_add_device(&exynos4210_pd->genpd, dev);
> +}
> +
> +struct exynos4210_pm_domain exynos4210_pd_mfc = {
> + .name = "PD_MFC",
> + .base = S5P_PMU_MFC_CONF,
> + .mask = S5P_CLKGATE_BLOCK_MFC,
> + .boot_on = 0,
> +};
> +
> +struct exynos4210_pm_domain exynos4210_pd_g3d = {
> + .name = "PD_G3D",
> + .base = S5P_PMU_G3D_CONF,
> + .mask = S5P_CLKGATE_BLOCK_G3D,
> + .boot_on = 0,
> +};
> +
> +struct exynos4210_pm_domain exynos4210_pd_lcd0 = {
> + .name = "PD_LCD0",
> + .base = S5P_PMU_LCD0_CONF,
> + .mask = S5P_CLKGATE_BLOCK_LCD0,
> + .boot_on = 1,
> +};
> +
> +struct exynos4210_pm_domain exynos4210_pd_lcd1 = {
> + .name = "PD_LCD1",
> + .base = S5P_PMU_LCD1_CONF,
> + .mask = S5P_CLKGATE_BLOCK_LCD1,
> + .boot_on = 0,
> +};
> +
> +struct exynos4210_pm_domain exynos4210_pd_tv = {
> + .name = "PD_TV",
> + .base = S5P_PMU_TV_CONF,
> + .mask = S5P_CLKGATE_BLOCK_TV,
> + .boot_on = 0,
> +};
> +
> +struct exynos4210_pm_domain exynos4210_pd_cam = {
> + .name = "PD_CAM",
> + .base = S5P_PMU_CAM_CONF,
> + .mask = S5P_CLKGATE_BLOCK_CAM,
> + .boot_on = 0,
> +};
> +
> +struct exynos4210_pm_domain exynos4210_pd_gps = {
> + .name = "PD_GPS",
> + .base = S5P_PMU_GPS_CONF,
> + .mask = S5P_CLKGATE_BLOCK_GPS,
> + .boot_on = 0,
> +};
> +
> +#endif /* CONFIG_PM */
> --
> 1.7.0.4
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@samsung.com>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCHv3] ARM: EXYNOS4: Support for generic I/O power domains on EXYNOS4210
2011-07-08 5:28 ` Kukjin Kim
@ 2011-07-08 6:19 ` Chanwoo Choi
2011-07-16 3:19 ` Kukjin Kim
0 siblings, 1 reply; 5+ messages in thread
From: Chanwoo Choi @ 2011-07-08 6:19 UTC (permalink / raw)
To: Kukjin Kim
Cc: 'Rafael J. Wysocki', 'Kyungmin Park',
'MyungJoo Ham', 'Sylwester Nawrocki',
linux-pm, 'linux-samsung-soc', 'linux-kernel'
Kukjin Kim wrote:
> 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
>>
> I think, this should be moved under "---"
OK, I will move it.
>
>> 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
>>
> Same as above.
OK.
>
>> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
>> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
>> Signed-off-by: Kyungmin.park <kyungmin.park@samsung.com>
>
> Kyungmin Park?
My mistake. I will modify it.
>
>> ---
>> arch/arm/mach-exynos4/Kconfig | 1 +
>> arch/arm/mach-exynos4/Makefile | 1 +
>> arch/arm/mach-exynos4/include/mach/pm-exynos4210.h | 53 ++++++
>> arch/arm/mach-exynos4/include/mach/regs-clock.h | 8 +
>> arch/arm/mach-exynos4/mach-nuri.c | 18 ++
>> arch/arm/mach-exynos4/pm-exynos4210.c | 184
>> ++++++++++++++++++++
>> 6 files changed, 265 insertions(+), 0 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..c5357b5 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 if PM
>
> Do you _really_ think this should be under MACH_NURI?
>
This patch apply the generic power-domain to NURI board.
If other board(EXYNOS4 series) use the generic power-domain,
I think that PM_GENERIC_DOMAINS config should be moved under CPU_EXYNOS4210 config.
If you prefer to move it under CPU_EXYNOS4210, I will modify it.
>> 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..ab09034
>> --- /dev/null
>> +++ b/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h
>> @@ -0,0 +1,53 @@
>> +/* linux/arch/arm/mach-exynos4/include/mach/pm-exynos4.h
>
> According to your file name, should be linux/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h ?
This patch support only power-domain of EXYNOS4210, so I named "pm-exynos4210.h"
If EXYNOS4 series board will be released, I will modify include file name
from "pm-exynos4210.h" to "pm-exynos4.h" to support all EXYNOS4 series.
But, I don't know next EXYNOS4 series and then named "pm-exynos4210.h".
Do you want to change from "pm-exynos4210.h" to "pm-exynos4.h"?
>
>> + *
>> + * Exynos4 Power management support
>
> Is this for EXYNOS4 or only EXYNOS4210?
>
Only EXYNOS4210. I will fix it.
>> + *
>> + * Copyright (c) 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;
>> + u32 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_mfc;
>> +extern struct exynos4210_pm_domain exynos4210_pd_g3d;
>> +extern struct exynos4210_pm_domain exynos4210_pd_lcd0;
>> +extern struct exynos4210_pm_domain exynos4210_pd_lcd1;
>> +extern struct exynos4210_pm_domain exynos4210_pd_tv;
>> +extern struct exynos4210_pm_domain exynos4210_pd_cam;
>> +extern struct exynos4210_pm_domain exynos4210_pd_gps;
>> +
>> +extern void exynos4210_init_pm_domain(struct exynos4210_pm_domain
>> *exynos4210_pd);
>> +extern void exynos4210_add_device_to_domain(struct exynos4210_pm_domain
>> *exynos4210_pd,
>> + struct platform_device *pdev);
>> +#else
>> +#define exynos4210_init_pm_domain(pd) do { } while(0)
>> +#define exynos4_add_device_to_domain(pd, pdev) do { } while(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)
>
> The blank should be added around "<<" like (1 << 0)
Ok, I will modify it.
>
>> +#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)
>
> Same...
Ok.
>
>> +
>> /* Compatibility defines and inclusion */
>>
>> #include <mach/regs-pmu.h>
>
> Hmm...how about if this is required, just add the inclusion in c file?
>
> Actually, you added above in pm-exynos4210.c...
It was added before this patch, so I didn't consider it.
If you want to remove it, I apply this patch about removal of inclusion(mach/regs-pmu.h).
>
>> diff --git a/arch/arm/mach-exynos4/mach-nuri.c b/arch/arm/mach-exynos4/mach-
>> nuri.c
>> index 642702b..816c6f4 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 +377,21 @@ static struct platform_device *nuri_devices[] __initdata = {
>> &nuri_backlight_device,
>> };
>>
>> +static void __init nuri_power_domain_init(void)
>> +{
>> + /* Initialize power-domain */
>> + exynos4210_init_pm_domain(&exynos4210_pd_mfc);
>> + exynos4210_init_pm_domain(&exynos4210_pd_g3d);
>> + exynos4210_init_pm_domain(&exynos4210_pd_lcd0);
>> + exynos4210_init_pm_domain(&exynos4210_pd_lcd1);
>> + exynos4210_init_pm_domain(&exynos4210_pd_tv);
>> + exynos4210_init_pm_domain(&exynos4210_pd_cam);
>> + exynos4210_init_pm_domain(&exynos4210_pd_gps);
>
> Hmm, is this needed only on NURI?
As mentioned above, this patch support only NURI board.
If the generic power-domain to support EXYNOS4210 is used on other board,
I think that it should apply the board file of other board using EXYNOS4210.
>
>> +
>> + /* Add device to power-domain */
>> + exynos4210_add_device_to_domain(&exynos4210_pd_lcd0,
>> &nuri_lcd_device);
>> +}
>> +
>> static void __init nuri_map_io(void)
>> {
>> s5p_init_io(NULL, 0, S5P_VA_CHIPID);
>> @@ -398,6 +414,8 @@ static void __init nuri_machine_init(void)
>>
>> /* Last */
>> platform_add_devices(nuri_devices, ARRAY_SIZE(nuri_devices));
>> +
>> + nuri_power_domain_init();
>> }
>>
>> MACHINE_START(NURI, "NURI")
>> diff --git a/arch/arm/mach-exynos4/pm-exynos4210.c b/arch/arm/mach-
>> exynos4/pm-exynos4210.c
>> new file mode 100644
>> index 0000000..f44dcef
>> --- /dev/null
>> +++ b/arch/arm/mach-exynos4/pm-exynos4210.c
>> @@ -0,0 +1,184 @@
>> +/* linux/arch/arm/mach-exynos4/pm-exynos4210.c
>> + *
>> + * Exynos4210 Power management support
>> + *
>> + * Copyright (c) 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.
>> + */
>> +
>> +#include <linux/pm.h>
>> +#include <linux/module.h>
>> +#include <linux/delay.h>
>> +#include <linux/err.h>
>> +#include <linux/slab.h>
>> +#include <linux/pm_runtime.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/pm_domain.h>
>> +#include <linux/io.h>
>> +
>> +#include <mach/regs-pmu.h>
>
> As I said, so no need to add this inclusion in <mach/regs-clock.h>
Ok.
>
>> +#include <mach/regs-clock.h>
>> +#include <mach/pm-exynos4210.h>
>> +
>> +#ifdef CONFIG_PM
>> +static DEFINE_SPINLOCK(clkgate_block_lock);
>> +
>> +static int pd_power_down(struct generic_pm_domain *genpd)
>> +{
>> + struct exynos4210_pm_domain *exynos4210_pd =
>> to_exynos4210_pd(genpd);
>> + u32 timeout;
>> +
>> + /* Disable the power of power-domain */
>> + __raw_writel(0, exynos4210_pd->base);
>> +
>> + /* Wait max 1ms */
>> + timeout = 10;
>> + while (__raw_readl(exynos4210_pd->base + 0x4) &
>> S5P_INT_LOCAL_PWR_EN) {
>> + if (timeout == 0) {
>> + printk(KERN_ERR "Power domain %s disable failed.\n",
>> + exynos4210_pd->name);
>> + return -ETIMEDOUT;
>> + }
>> + timeout--;
>> + udelay(100);
>> + }
>> +
>> + /* Configure the clock-gating control register for block to turn off */
>> + if (exynos4210_pd->mask) {
>> + unsigned long flags;
>> + u32 reg;
>> +
>> + spin_lock_irqsave(&clkgate_block_lock, flags);
>> + reg = __raw_readl(S5P_CLKGATE_BLOCK);
>> + reg &= ~exynos4210_pd->mask;
>> + __raw_writel(reg, S5P_CLKGATE_BLOCK);
>> + spin_unlock_irqrestore(&clkgate_block_lock, flags);
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int pd_power_up(struct generic_pm_domain *genpd)
>> +{
>> + struct exynos4210_pm_domain *exynos4210_pd =
>> to_exynos4210_pd(genpd);
>> + u32 timeout;
>> +
>> + /* Enable power domain */
>> + __raw_writel(S5P_INT_LOCAL_PWR_EN, exynos4210_pd->base);
>> +
>> + /* Wait max 1ms */
>> + timeout = 10;
>> + while ((__raw_readl(exynos4210_pd->base + 0x4) &
>> S5P_INT_LOCAL_PWR_EN)
>> + != S5P_INT_LOCAL_PWR_EN) {
>> + if (timeout == 0) {
>> + printk(KERN_ERR "Power domain %s enable failed.\n",
>> + exynos4210_pd->name);
>> + return -ETIMEDOUT;
>> + }
>> + timeout--;
>> + udelay(100);
>> + }
>> +
>> + /* Configure the clock-gating control register for block to turn on */
>> + if (exynos4210_pd->mask) {
>> + unsigned long flags;
>> + u32 reg;
>> +
>> + spin_lock_irqsave(&clkgate_block_lock, flags);
>> + reg = __raw_readl(S5P_CLKGATE_BLOCK);
>> + reg |= exynos4210_pd->mask;
>> + __raw_writel(reg, S5P_CLKGATE_BLOCK);
>> + spin_unlock_irqrestore(&clkgate_block_lock, flags);
>> + }
>> +
>> + return 0;
>> +}
>
> Would be better if you could add some common function for pd_power_up and _down...
What do you mean about common function?
The generic Power-domain framework provides callback function to control power-domain,
so I implement the control function to support power-domain of EXYNOS4210.
We need the additional common function for EXYNOS4210 ???
You can see the below codes:
+ genpd->stop_device = pm_clk_suspend;
+ genpd->start_device = pm_clk_resume;
+ genpd->active_wakeup = pd_active_wakeup;
+ genpd->power_off = pd_power_down;
+ genpd->power_on = pd_power_up;
>
> I wonder why we need to add this for handling power domain not update current pd.
As you said, the generic power-domain framework isn't updated to Mainline,
But, this patch prepares to support the subsequent power-domain framework,
To review this patch, I posted it.
> As you know, they are having same/similar purpose and functions...
>
I don't understand your comment exactly.
Don't your agree to use the generic Power-domain framework for SAMSUNG SoC?
or Again, please decribe your comment in detail.
>> +
>> +static bool pd_active_wakeup(struct device *dev)
>> +{
>> + return true;
>> +}
>> +
>> +void exynos4210_init_pm_domain(struct exynos4210_pm_domain
>> *exynos4210_pd)
>> +{
>> + struct generic_pm_domain *genpd;
>> +
>> + if (!exynos4210_pd)
>> + return;
>> +
>> + genpd = &exynos4210_pd->genpd;
>> +
>> + pm_genpd_init(genpd, NULL, false);
>> + genpd->stop_device = pm_clk_suspend;
>> + genpd->start_device = pm_clk_resume;
>> + genpd->active_wakeup = pd_active_wakeup;
>> + genpd->power_off = pd_power_down;
>> + genpd->power_on = pd_power_up;
>> +
>> + if (exynos4210_pd->boot_on)
>> + pd_power_up(&exynos4210_pd->genpd);
>> +}
>> +
>> +void exynos4210_add_device_to_domain(struct exynos4210_pm_domain
>> *exynos4210_pd,
>> + struct platform_device *pdev)
>> +{
>> + struct device *dev = &pdev->dev;
>> +
>> + if (exynos4210_pd && pdev)
>> + pm_genpd_add_device(&exynos4210_pd->genpd, dev);
>> +}
>> +
>> +struct exynos4210_pm_domain exynos4210_pd_mfc = {
>> + .name = "PD_MFC",
>> + .base = S5P_PMU_MFC_CONF,
>> + .mask = S5P_CLKGATE_BLOCK_MFC,
>> + .boot_on = 0,
>> +};
>> +
>> +struct exynos4210_pm_domain exynos4210_pd_g3d = {
>> + .name = "PD_G3D",
>> + .base = S5P_PMU_G3D_CONF,
>> + .mask = S5P_CLKGATE_BLOCK_G3D,
>> + .boot_on = 0,
>> +};
>> +
>> +struct exynos4210_pm_domain exynos4210_pd_lcd0 = {
>> + .name = "PD_LCD0",
>> + .base = S5P_PMU_LCD0_CONF,
>> + .mask = S5P_CLKGATE_BLOCK_LCD0,
>> + .boot_on = 1,
>> +};
>> +
>> +struct exynos4210_pm_domain exynos4210_pd_lcd1 = {
>> + .name = "PD_LCD1",
>> + .base = S5P_PMU_LCD1_CONF,
>> + .mask = S5P_CLKGATE_BLOCK_LCD1,
>> + .boot_on = 0,
>> +};
>> +
>> +struct exynos4210_pm_domain exynos4210_pd_tv = {
>> + .name = "PD_TV",
>> + .base = S5P_PMU_TV_CONF,
>> + .mask = S5P_CLKGATE_BLOCK_TV,
>> + .boot_on = 0,
>> +};
>> +
>> +struct exynos4210_pm_domain exynos4210_pd_cam = {
>> + .name = "PD_CAM",
>> + .base = S5P_PMU_CAM_CONF,
>> + .mask = S5P_CLKGATE_BLOCK_CAM,
>> + .boot_on = 0,
>> +};
>> +
>> +struct exynos4210_pm_domain exynos4210_pd_gps = {
>> + .name = "PD_GPS",
>> + .base = S5P_PMU_GPS_CONF,
>> + .mask = S5P_CLKGATE_BLOCK_GPS,
>> + .boot_on = 0,
>> +};
>> +
>> +#endif /* CONFIG_PM */
>> --
>> 1.7.0.4
>
>
> Thanks.
>
> Best regards,
> Kgene.
> --
> Kukjin Kim <kgene.kim@samsung.com>, Senior Engineer,
> SW Solution Development Team, Samsung Electronics Co., Ltd.
>
>
Thanks,
Best regards,
Chanwoo Choi
^ permalink raw reply [flat|nested] 5+ messages in thread
* RE: [PATCHv3] ARM: EXYNOS4: Support for generic I/O power domains on EXYNOS4210
2011-07-08 6:19 ` Chanwoo Choi
@ 2011-07-16 3:19 ` Kukjin Kim
2011-07-16 3:58 ` Chanwoo Choi
0 siblings, 1 reply; 5+ messages in thread
From: Kukjin Kim @ 2011-07-16 3:19 UTC (permalink / raw)
To: 'Chanwoo Choi'
Cc: 'Rafael J. Wysocki', 'Kyungmin Park',
'MyungJoo Ham', 'Sylwester Nawrocki',
linux-pm, 'linux-samsung-soc', 'linux-kernel'
Chanwoo Choi wrote:
>
> Kukjin Kim wrote:
(snip)
> >> @@ -183,6 +183,7 @@ config MACH_NURI
> >> select EXYNOS4_SETUP_SDHCI
> >> select EXYNOS4_SETUP_USB_PHY
> >> select SAMSUNG_DEV_PWM
> >> + select PM_GENERIC_DOMAINS if PM
> >
> > Do you _really_ think this should be under MACH_NURI?
> >
> This patch apply the generic power-domain to NURI board.
I mean, the PM_GENERIC_DOMAINS feature depends on CPU not board even though this is for only NURI board.
(snip)
> >> 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..ab09034
> >> --- /dev/null
> >> +++ b/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h
> >> @@ -0,0 +1,53 @@
> >> +/* linux/arch/arm/mach-exynos4/include/mach/pm-exynos4.h
> >
> > According to your file name, should be linux/arch/arm/mach-
> exynos4/include/mach/pm-exynos4210.h ?
>
I said just typo...
+/* linux/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h
> This patch support only power-domain of EXYNOS4210, so I named "pm-
> exynos4210.h"
> If EXYNOS4 series board will be released, I will modify include file name
> from "pm-exynos4210.h" to "pm-exynos4.h" to support all EXYNOS4 series.
No need it, it's different.
(snip)
> > Would be better if you could add some common function for pd_power_up and
> _down...
>
> What do you mean about common function?
>
I thought, pd_power_up and _down can be implemented in one function.
(snip)
> > I wonder why we need to add this for handling power domain not update current
> pd.
>
See arch/arm/mach-exynos4/dev-pd.c
I mean, we _really_ need to keep duplication files for handling power domain?...
(snip)
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@samsung.com>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCHv3] ARM: EXYNOS4: Support for generic I/O power domains on EXYNOS4210
2011-07-16 3:19 ` Kukjin Kim
@ 2011-07-16 3:58 ` Chanwoo Choi
0 siblings, 0 replies; 5+ messages in thread
From: Chanwoo Choi @ 2011-07-16 3:58 UTC (permalink / raw)
To: Kukjin Kim
Cc: 'Rafael J. Wysocki', 'Kyungmin Park',
'MyungJoo Ham', 'Sylwester Nawrocki',
linux-pm, 'linux-samsung-soc', 'linux-kernel'
Kukjin Kim wrote:
> Chanwoo Choi wrote:
>> Kukjin Kim wrote:
>
> (snip)
>
>>>> @@ -183,6 +183,7 @@ config MACH_NURI
>>>> select EXYNOS4_SETUP_SDHCI
>>>> select EXYNOS4_SETUP_USB_PHY
>>>> select SAMSUNG_DEV_PWM
>>>> + select PM_GENERIC_DOMAINS if PM
>>> Do you _really_ think this should be under MACH_NURI?
>>>
>> This patch apply the generic power-domain to NURI board.
>
> I mean, the PM_GENERIC_DOMAINS feature depends on CPU not board even though this is for only NURI board.
>
OK, I will move it from CONFIG_MACH_NURI to CONFIG_CPU_EXYNOS4210 in arch/arm/mach-exynos4/Kconfig.
> (snip)
>
>>>> 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..ab09034
>>>> --- /dev/null
>>>> +++ b/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h
>>>> @@ -0,0 +1,53 @@
>>>> +/* linux/arch/arm/mach-exynos4/include/mach/pm-exynos4.h
>>> According to your file name, should be linux/arch/arm/mach-
>> exynos4/include/mach/pm-exynos4210.h ?
>>
> I said just typo...
>
> +/* linux/arch/arm/mach-exynos4/include/mach/pm-exynos4210.h
>
>> This patch support only power-domain of EXYNOS4210, so I named "pm-
>> exynos4210.h"
>> If EXYNOS4 series board will be released, I will modify include file name
>> from "pm-exynos4210.h" to "pm-exynos4.h" to support all EXYNOS4 series.
>
> No need it, it's different.
My mistake. I will fix it.
>
> (snip)
>
>>> Would be better if you could add some common function for pd_power_up and
>> _down...
>>
>> What do you mean about common function?
>>
> I thought, pd_power_up and _down can be implemented in one function.
>
OK, If you want to combine two function(pd_power_up and pd_power_down),
I will modify it.
> (snip)
>
>>> I wonder why we need to add this for handling power domain not update current
>> pd.
>>
> See arch/arm/mach-exynos4/dev-pd.c
>
> I mean, we _really_ need to keep duplication files for handling power domain?...
Now, you're right.
But, If Generic Power-domain Framework will be applied to the mainline,
I think it necessary that we should apply Generic Power-domain Framework to all of
the board using EXYNOS4210(arch/arm/mach-exynos4) and delete old power-domain
(arch/arm/mach-exynos4/dev-pd.c) to remove duplication file.
Thanks & Regards,
Chanwoo Choi
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-07-16 3:58 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2011-07-08 5:28 ` Kukjin Kim
2011-07-08 6:19 ` Chanwoo Choi
2011-07-16 3:19 ` Kukjin Kim
2011-07-16 3:58 ` Chanwoo Choi
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