rockchip/iep: add pm runtime operation

Change-Id: I51283153d2229de27ab085db53ba311f5afc414e
Signed-off-by: Alpha Lin <alpha.lin@rock-chips.com>

diff --git a/drivers/video/rockchip/iep/iep_drv.c b/drivers/video/rockchip/iep/iep_drv.c
index d1a4036870f3eba9951ededd6008d321268c7568..0ddd41983f342662f768833f26e7e11f592de5ad 100644 (file)
--- a/drivers/video/rockchip/iep/iep_drv.c
+++ b/drivers/video/rockchip/iep/iep_drv.c
@@ -30,6 +30,7 @@
 #include <linux/of_platform.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/pm_runtime.h>
 #include <linux/rockchip/cpu.h>
 #include <linux/rockchip/cru.h>
 #include <asm/cacheflush.h>
@@ -54,7 +55,6 @@ MODULE_PARM_DESC(debug,
 
 struct iep_drvdata {
        struct miscdevice miscdev;
-       struct device dev;
        void *iep_base;
        int irq0;
 
@@ -80,6 +80,7 @@ struct iep_drvdata {
 
        /* capability for this iep device */
        struct IEP_CAP cap;
+       struct device *dev;
 };
 
 struct iep_drvdata *iep_drvdata1 = NULL;
@@ -224,6 +225,7 @@ static void iep_power_on(void)
        /* iep_soft_rst(iep_drvdata1->iep_base); */
 
 #ifdef IEP_CLK_ENABLE
+       pm_runtime_get_sync(iep_drvdata1->dev);
        if (iep_drvdata1->pd_iep)
                clk_prepare_enable(iep_drvdata1->pd_iep);
        clk_prepare_enable(iep_drvdata1->aclk_iep);
@@ -270,6 +272,7 @@ static void iep_power_off(void)
        clk_disable_unprepare(iep_drvdata1->hclk_iep);
        if (iep_drvdata1->pd_iep)
                clk_disable_unprepare(iep_drvdata1->pd_iep);
+       pm_runtime_put(iep_drvdata1->dev);
 #endif
 
        wake_unlock(&iep_drvdata1->wake_lock);
@@ -1136,6 +1139,11 @@ static int iep_drv_probe(struct platform_device *pdev)
                goto err_misc_register;
        }
 
+       data->dev = &pdev->dev;
+#ifdef IEP_CLK_ENABLE
+       pm_runtime_enable(data->dev);
+#endif
+
 #if defined(CONFIG_IEP_IOMMU)
        iep_service.iommu_dev = NULL;
        if (iommu_en) {
@@ -1207,6 +1215,8 @@ static int iep_drv_remove(struct platform_device *pdev)
 
        if (data->pd_iep)
                devm_clk_put(&pdev->dev, data->pd_iep);
+
+       pm_runtime_disable(data->dev);
 #endif
 
        return 0;