mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 10:29:37 +00:00
![Kukjin Kim](/assets/img/avatar_default.png)
The arch/arm/mach-exynos4 directory (CONFIG_ARCH_EXYNOS4) has made for plaforms based on EXYNOS4 SoCs. But since upcoming Samsung's SoCs such as EXYNOS5 (ARM Cortex A15) can reuse most codes in current mach-exynos4, one mach-exynos directory will be used for them. This patch changes to CONFIG_ARCH_EXYNOS (arch/arm/mach-exynos) but keeps original CONFIG_ARCH_EXYNOS4 in mach-exynos/Kconfig to avoid changing in driver side. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
139 lines
2.9 KiB
C
139 lines
2.9 KiB
C
/* linux/arch/arm/mach-exynos4/dev-pd.c
|
|
*
|
|
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com
|
|
*
|
|
* EXYNOS4 - Power Domain support
|
|
*
|
|
* 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/io.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/delay.h>
|
|
|
|
#include <mach/regs-pmu.h>
|
|
|
|
#include <plat/pd.h>
|
|
|
|
static int exynos4_pd_enable(struct device *dev)
|
|
{
|
|
struct samsung_pd_info *pdata = dev->platform_data;
|
|
u32 timeout;
|
|
|
|
__raw_writel(S5P_INT_LOCAL_PWR_EN, pdata->base);
|
|
|
|
/* Wait max 1ms */
|
|
timeout = 10;
|
|
while ((__raw_readl(pdata->base + 0x4) & S5P_INT_LOCAL_PWR_EN)
|
|
!= S5P_INT_LOCAL_PWR_EN) {
|
|
if (timeout == 0) {
|
|
printk(KERN_ERR "Power domain %s enable failed.\n",
|
|
dev_name(dev));
|
|
return -ETIMEDOUT;
|
|
}
|
|
timeout--;
|
|
udelay(100);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int exynos4_pd_disable(struct device *dev)
|
|
{
|
|
struct samsung_pd_info *pdata = dev->platform_data;
|
|
u32 timeout;
|
|
|
|
__raw_writel(0, pdata->base);
|
|
|
|
/* Wait max 1ms */
|
|
timeout = 10;
|
|
while (__raw_readl(pdata->base + 0x4) & S5P_INT_LOCAL_PWR_EN) {
|
|
if (timeout == 0) {
|
|
printk(KERN_ERR "Power domain %s disable failed.\n",
|
|
dev_name(dev));
|
|
return -ETIMEDOUT;
|
|
}
|
|
timeout--;
|
|
udelay(100);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct platform_device exynos4_device_pd[] = {
|
|
{
|
|
.name = "samsung-pd",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &(struct samsung_pd_info) {
|
|
.enable = exynos4_pd_enable,
|
|
.disable = exynos4_pd_disable,
|
|
.base = S5P_PMU_MFC_CONF,
|
|
},
|
|
},
|
|
}, {
|
|
.name = "samsung-pd",
|
|
.id = 1,
|
|
.dev = {
|
|
.platform_data = &(struct samsung_pd_info) {
|
|
.enable = exynos4_pd_enable,
|
|
.disable = exynos4_pd_disable,
|
|
.base = S5P_PMU_G3D_CONF,
|
|
},
|
|
},
|
|
}, {
|
|
.name = "samsung-pd",
|
|
.id = 2,
|
|
.dev = {
|
|
.platform_data = &(struct samsung_pd_info) {
|
|
.enable = exynos4_pd_enable,
|
|
.disable = exynos4_pd_disable,
|
|
.base = S5P_PMU_LCD0_CONF,
|
|
},
|
|
},
|
|
}, {
|
|
.name = "samsung-pd",
|
|
.id = 3,
|
|
.dev = {
|
|
.platform_data = &(struct samsung_pd_info) {
|
|
.enable = exynos4_pd_enable,
|
|
.disable = exynos4_pd_disable,
|
|
.base = S5P_PMU_LCD1_CONF,
|
|
},
|
|
},
|
|
}, {
|
|
.name = "samsung-pd",
|
|
.id = 4,
|
|
.dev = {
|
|
.platform_data = &(struct samsung_pd_info) {
|
|
.enable = exynos4_pd_enable,
|
|
.disable = exynos4_pd_disable,
|
|
.base = S5P_PMU_TV_CONF,
|
|
},
|
|
},
|
|
}, {
|
|
.name = "samsung-pd",
|
|
.id = 5,
|
|
.dev = {
|
|
.platform_data = &(struct samsung_pd_info) {
|
|
.enable = exynos4_pd_enable,
|
|
.disable = exynos4_pd_disable,
|
|
.base = S5P_PMU_CAM_CONF,
|
|
},
|
|
},
|
|
}, {
|
|
.name = "samsung-pd",
|
|
.id = 6,
|
|
.dev = {
|
|
.platform_data = &(struct samsung_pd_info) {
|
|
.enable = exynos4_pd_enable,
|
|
.disable = exynos4_pd_disable,
|
|
.base = S5P_PMU_GPS_CONF,
|
|
},
|
|
},
|
|
},
|
|
};
|