140 lines
2.9 KiB
C
140 lines
2.9 KiB
C
/* linux/arch/arm/mach-exynos4/dev-pd.c
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*
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* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* EXYNOS4 - Power Domain support
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <mach/regs-pmu.h>
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#include <plat/pd.h>
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static int exynos4_pd_enable(struct device *dev)
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{
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struct samsung_pd_info *pdata = dev->platform_data;
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u32 timeout;
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__raw_writel(S5P_INT_LOCAL_PWR_EN, pdata->base);
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/* Wait max 1ms */
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timeout = 10;
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while ((__raw_readl(pdata->base + 0x4) & S5P_INT_LOCAL_PWR_EN)
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!= S5P_INT_LOCAL_PWR_EN) {
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if (timeout == 0) {
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printk(KERN_ERR "Power domain %s enable failed.\n",
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dev_name(dev));
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return -ETIMEDOUT;
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}
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timeout--;
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udelay(100);
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}
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return 0;
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}
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static int exynos4_pd_disable(struct device *dev)
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{
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struct samsung_pd_info *pdata = dev->platform_data;
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u32 timeout;
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__raw_writel(0, pdata->base);
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/* Wait max 1ms */
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timeout = 10;
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while (__raw_readl(pdata->base + 0x4) & S5P_INT_LOCAL_PWR_EN) {
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if (timeout == 0) {
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printk(KERN_ERR "Power domain %s disable failed.\n",
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dev_name(dev));
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return -ETIMEDOUT;
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}
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timeout--;
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udelay(100);
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}
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return 0;
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}
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struct platform_device exynos4_device_pd[] = {
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{
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.name = "samsung-pd",
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.id = 0,
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.dev = {
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.platform_data = &(struct samsung_pd_info) {
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.enable = exynos4_pd_enable,
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.disable = exynos4_pd_disable,
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.base = S5P_PMU_MFC_CONF,
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},
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},
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}, {
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.name = "samsung-pd",
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.id = 1,
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.dev = {
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.platform_data = &(struct samsung_pd_info) {
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.enable = exynos4_pd_enable,
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.disable = exynos4_pd_disable,
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.base = S5P_PMU_G3D_CONF,
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},
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},
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}, {
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.name = "samsung-pd",
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.id = 2,
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.dev = {
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.platform_data = &(struct samsung_pd_info) {
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.enable = exynos4_pd_enable,
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.disable = exynos4_pd_disable,
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.base = S5P_PMU_LCD0_CONF,
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},
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},
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}, {
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.name = "samsung-pd",
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.id = 3,
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.dev = {
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.platform_data = &(struct samsung_pd_info) {
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.enable = exynos4_pd_enable,
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.disable = exynos4_pd_disable,
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.base = S5P_PMU_LCD1_CONF,
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},
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},
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}, {
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.name = "samsung-pd",
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.id = 4,
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.dev = {
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.platform_data = &(struct samsung_pd_info) {
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.enable = exynos4_pd_enable,
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.disable = exynos4_pd_disable,
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.base = S5P_PMU_TV_CONF,
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},
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},
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}, {
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.name = "samsung-pd",
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.id = 5,
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.dev = {
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.platform_data = &(struct samsung_pd_info) {
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.enable = exynos4_pd_enable,
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.disable = exynos4_pd_disable,
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.base = S5P_PMU_CAM_CONF,
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},
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},
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}, {
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.name = "samsung-pd",
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.id = 6,
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.dev = {
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.platform_data = &(struct samsung_pd_info) {
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.enable = exynos4_pd_enable,
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.disable = exynos4_pd_disable,
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.base = S5P_PMU_GPS_CONF,
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},
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},
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},
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};
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