Revert "ACPI / LPSS: Remove non-existing clock control from Intel Lynxpoint I2C"

[karo-tx-linux.git] / drivers / acpi / acpi_lpss.c

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 4f3febf8a58954b2ca8ced8c057106529ab1f30b..a7ee533c1cef90e21f119dac21c86f32ea916678 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 {
@@ -150,24 +146,22 @@ 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,
 };
@@ -340,6 +334,8 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
                                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 +370,6 @@ 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 +594,7 @@ 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 +602,6 @@ 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;