From: Zhiqin Wei <wzq@rock-chips.com>
Date: Wed, 1 Jun 2016 09:22:11 +0000 (+0800)
Subject: rockchip/rga: Enable runtime PM of RGA
X-Git-Tag: firefly_0821_release~2525
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=113b3728823fad5072527288a59c60c3a185357d;p=firefly-linux-kernel-4.4.55.git

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 d8b5d90d70bb..26423579e440 100644
--- 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;
 }