rockchip/rga: Enable runtime PM of RGA

Change-Id: I9452da520b675cb5d3a5ac8795571ade53e65297
Signed-off-by: Zhiqin Wei <wzq@rock-chips.com>

diff --git a/drivers/video/rockchip/rga2/rga2_drv.c b/drivers/video/rockchip/rga2/rga2_drv.c
index d8b5d90d70bba77f8cd971c5884c04b7738ecbc5..26423579e440463c05cee232ce93a897e556f721 100644 (file)
--- a/drivers/video/rockchip/rga2/rga2_drv.c
+++ b/drivers/video/rockchip/rga2/rga2_drv.c
@@ -42,6 +42,8 @@
 #include <linux/wakelock.h>
 #include <linux/scatterlist.h>
 #include <linux/rockchip_ion.h>
+#include <linux/version.h>
+#include <linux/pm_runtime.h>
 
 #include "rga2.h"
 #include "rga2_reg_info.h"
@@ -75,7 +77,7 @@ long (*rga_ioctl_kernel_p)(struct rga_req *);
 
 struct rga2_drvdata_t {
        struct miscdevice miscdev;
-       struct device dev;
+       struct device *dev;
        void *rga_base;
        int irq;
 
@@ -203,6 +205,10 @@ static void rga2_power_on(void)
        static ktime_t last;
        ktime_t now = ktime_get();
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0))
+       pm_runtime_get_sync(rga2_drvdata->dev);
+#endif
+
        if (ktime_to_ns(ktime_sub(now, last)) > NSEC_PER_SEC) {
                cancel_delayed_work_sync(&rga2_drvdata->power_off_work);
                rga2_queue_power_off_work();
@@ -239,6 +245,11 @@ static void rga2_power_off(void)
        clk_disable_unprepare(rga2_drvdata->rga2);
        clk_disable_unprepare(rga2_drvdata->aclk_rga2);
        clk_disable_unprepare(rga2_drvdata->hclk_rga2);
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0))
+       pm_runtime_put(rga2_drvdata->dev);
+#endif
+
        wake_unlock(&rga2_drvdata->wake_lock);
     first_RGA2_proc = 0;
        rga2_service.enable = false;
@@ -1219,6 +1230,7 @@ static int rga2_drv_probe(struct platform_device *pdev)
        }
 
        platform_set_drvdata(pdev, data);
+       data->dev = &pdev->dev;
        rga2_drvdata = data;
        of_property_read_u32(np, "dev_mode", &rga2_service.dev_mode);
 
@@ -1239,6 +1251,10 @@ static int rga2_drv_probe(struct platform_device *pdev)
                goto err_misc_register;
        }
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0))
+       pm_runtime_enable(&pdev->dev);
+#endif
+
        pr_info("Driver loaded succesfully\n");
 
        return 0;
@@ -1268,6 +1284,10 @@ static int rga2_drv_remove(struct platform_device *pdev)
        devm_clk_put(&pdev->dev, data->aclk_rga2);
        devm_clk_put(&pdev->dev, data->hclk_rga2);
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0))
+       pm_runtime_disable(&pdev->dev);
+#endif
+
        kfree(data);
        return 0;
 }