1 files changed, 139 insertions, 0 deletions

diff --git a/arch/arm/mach-exynos4/dev-pd.c b/arch/arm/mach-exynos4/dev-pd.c
new file mode 100644
index 000000000000..3273f25d6a75
--- /dev/null
+++ b/arch/arm/mach-exynos4/dev-pd.c
@@ -0,0 +1,139 @@
+/* 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,
+                        },
+                },
+        },
+};