Merge branches 'acpi-ec', 'acpi-soc', 'acpi-video' and 'acpi-resources'

[linux-drm-fsl-dcu.git] / drivers / acpi / acpi_lpss.c

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 4f3febf8a58954b2ca8ced8c057106529ab1f30b..657964e8ab7ed2ba9e56004d5f83881ad826e7b7 100644 (file)
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -1,7 +1,7 @@
 /*
  * ACPI support for Intel Lynxpoint LPSS.
  *
- * Copyright (C) 2013, 2014, Intel Corporation
+ * Copyright (C) 2013, Intel Corporation
  * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
  *          Rafael J. Wysocki <rafael.j.wysocki@intel.com>
  *
@@ -60,8 +60,6 @@ ACPI_MODULE_NAME("acpi_lpss");
 #define LPSS_CLK_DIVIDER               BIT(2)
 #define LPSS_LTR                       BIT(3)
 #define LPSS_SAVE_CTX                  BIT(4)
-#define LPSS_DEV_PROXY                 BIT(5)
-#define LPSS_PROXY_REQ                 BIT(6)
 
 struct lpss_private_data;
 
@@ -72,10 +70,8 @@ struct lpss_device_desc {
        void (*setup)(struct lpss_private_data *pdata);
 };
 
-static struct device *proxy_device;
-
 static struct lpss_device_desc lpss_dma_desc = {
-       .flags = LPSS_CLK | LPSS_PROXY_REQ,
+       .flags = LPSS_CLK,
 };
 
 struct lpss_private_data {
@@ -109,7 +105,7 @@ static void lpss_uart_setup(struct lpss_private_data *pdata)
        }
 }
 
-static void byt_i2c_setup(struct lpss_private_data *pdata)
+static void lpss_deassert_reset(struct lpss_private_data *pdata)
 {
        unsigned int offset;
        u32 val;
@@ -118,9 +114,18 @@ static void byt_i2c_setup(struct lpss_private_data *pdata)
        val = readl(pdata->mmio_base + offset);
        val |= LPSS_RESETS_RESET_APB | LPSS_RESETS_RESET_FUNC;
        writel(val, pdata->mmio_base + offset);
+}
+
+#define LPSS_I2C_ENABLE                        0x6c
+
+static void byt_i2c_setup(struct lpss_private_data *pdata)
+{
+       lpss_deassert_reset(pdata);
 
        if (readl(pdata->mmio_base + pdata->dev_desc->prv_offset))
                pdata->fixed_clk_rate = 133000000;
+
+       writel(0, pdata->mmio_base + LPSS_I2C_ENABLE);
 }
 
 static struct lpss_device_desc lpt_dev_desc = {
@@ -150,28 +155,32 @@ static struct lpss_device_desc byt_pwm_dev_desc = {
 };
 
 static struct lpss_device_desc byt_uart_dev_desc = {
-       .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX |
-                LPSS_DEV_PROXY,
+       .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,
        .prv_offset = 0x800,
        .setup = lpss_uart_setup,
 };
 
 static struct lpss_device_desc byt_spi_dev_desc = {
-       .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX |
-                LPSS_DEV_PROXY,
+       .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,
        .prv_offset = 0x400,
 };
 
 static struct lpss_device_desc byt_sdio_dev_desc = {
-       .flags = LPSS_CLK | LPSS_DEV_PROXY,
+       .flags = LPSS_CLK,
 };
 
 static struct lpss_device_desc byt_i2c_dev_desc = {
-       .flags = LPSS_CLK | LPSS_SAVE_CTX | LPSS_DEV_PROXY,
+       .flags = LPSS_CLK | LPSS_SAVE_CTX,
        .prv_offset = 0x800,
        .setup = byt_i2c_setup,
 };
 
+static struct lpss_device_desc bsw_spi_dev_desc = {
+       .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,
+       .prv_offset = 0x400,
+       .setup = lpss_deassert_reset,
+};
+
 #else
 
 #define LPSS_ADDR(desc) (0UL)
@@ -204,7 +213,7 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = {
        /* Braswell LPSS devices */
        { "80862288", LPSS_ADDR(byt_pwm_dev_desc) },
        { "8086228A", LPSS_ADDR(byt_uart_dev_desc) },
-       { "8086228E", LPSS_ADDR(byt_spi_dev_desc) },
+       { "8086228E", LPSS_ADDR(bsw_spi_dev_desc) },
        { "808622C1", LPSS_ADDR(byt_i2c_dev_desc) },
 
        { "INT3430", LPSS_ADDR(lpt_dev_desc) },
@@ -313,7 +322,7 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
 {
        struct lpss_device_desc *dev_desc;
        struct lpss_private_data *pdata;
-       struct resource_list_entry *rentry;
+       struct resource_entry *rentry;
        struct list_head resource_list;
        struct platform_device *pdev;
        int ret;
@@ -333,13 +342,15 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
                goto err_out;
 
        list_for_each_entry(rentry, &resource_list, node)
-               if (resource_type(&rentry->res) == IORESOURCE_MEM) {
+               if (resource_type(rentry->res) == IORESOURCE_MEM) {
                        if (dev_desc->prv_size_override)
                                pdata->mmio_size = dev_desc->prv_size_override;
                        else
-                               pdata->mmio_size = resource_size(&rentry->res);
-                       pdata->mmio_base = ioremap(rentry->res.start,
+                               pdata->mmio_size = resource_size(rentry->res);
+                       pdata->mmio_base = ioremap(rentry->res->start,
                                                   pdata->mmio_size);
+                       if (!pdata->mmio_base)
+                               goto err_out;
                        break;
                }
 
@@ -374,8 +385,6 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
        adev->driver_data = pdata;
        pdev = acpi_create_platform_device(adev);
        if (!IS_ERR_OR_NULL(pdev)) {
-               if (!proxy_device && dev_desc->flags & LPSS_DEV_PROXY)
-                       proxy_device = &pdev->dev;
                return 1;
        }
 
@@ -600,14 +609,7 @@ static int acpi_lpss_runtime_suspend(struct device *dev)
        if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
                acpi_lpss_save_ctx(dev, pdata);
 
-       ret = acpi_dev_runtime_suspend(dev);
-       if (ret)
-               return ret;
-
-       if (pdata->dev_desc->flags & LPSS_PROXY_REQ && proxy_device)
-               return pm_runtime_put_sync_suspend(proxy_device);
-
-       return 0;
+       return acpi_dev_runtime_suspend(dev);
 }
 
 static int acpi_lpss_runtime_resume(struct device *dev)
@@ -615,12 +617,6 @@ static int acpi_lpss_runtime_resume(struct device *dev)
        struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
        int ret;
 
-       if (pdata->dev_desc->flags & LPSS_PROXY_REQ && proxy_device) {
-               ret = pm_runtime_get_sync(proxy_device);
-               if (ret)
-                       return ret;
-       }
-
        ret = acpi_dev_runtime_resume(dev);
        if (ret)
                return ret;