aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/platform/davinci/vpss.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/platform/davinci/vpss.c')
-rw-r--r--drivers/media/platform/davinci/vpss.c36
1 files changed, 28 insertions, 8 deletions
diff --git a/drivers/media/platform/davinci/vpss.c b/drivers/media/platform/davinci/vpss.c
index a19c552232d..8a2f01e344e 100644
--- a/drivers/media/platform/davinci/vpss.c
+++ b/drivers/media/platform/davinci/vpss.c
@@ -17,14 +17,11 @@
*
* common vpss system module platform driver for all video drivers.
*/
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/compiler.h>
#include <linux/io.h>
+#include <linux/pm_runtime.h>
+
#include <media/davinci/vpss.h>
MODULE_LICENSE("GPL");
@@ -99,7 +96,7 @@ enum vpss_platform_type {
/*
* vpss operations. Depends on platform. Not all functions are available
- * on all platforms. The api, first check if a functio is available before
+ * on all platforms. The api, first check if a function is available before
* invoking it. In the probe, the function ptrs are initialized based on
* vpss name. vpss name can be "dm355_vpss", "dm644x_vpss" etc.
*/
@@ -114,7 +111,7 @@ struct vpss_hw_ops {
void (*set_sync_pol)(struct vpss_sync_pol);
/* set the PG_FRAME_SIZE register*/
void (*set_pg_frame_size)(struct vpss_pg_frame_size);
- /* check and clear interrupt if occured */
+ /* check and clear interrupt if occurred */
int (*dma_complete_interrupt)(void);
};
@@ -233,7 +230,7 @@ EXPORT_SYMBOL(vpss_clear_wbl_overflow);
/*
* dm355_enable_clock - Enable VPSS Clock
- * @clock_sel: CLock to be enabled/disabled
+ * @clock_sel: Clock to be enabled/disabled
* @en: enable/disable flag
*
* This is called to enable or disable a vpss clock
@@ -490,6 +487,10 @@ static int vpss_probe(struct platform_device *pdev)
} else
oper_cfg.hw_ops.clear_wbl_overflow = dm644x_clear_wbl_overflow;
+ pm_runtime_enable(&pdev->dev);
+
+ pm_runtime_get(&pdev->dev);
+
spin_lock_init(&oper_cfg.vpss_lock);
dev_info(&pdev->dev, "%s vpss probe success\n", platform_name);
return 0;
@@ -507,6 +508,7 @@ static int vpss_remove(struct platform_device *pdev)
{
struct resource *res;
+ pm_runtime_disable(&pdev->dev);
iounmap(oper_cfg.vpss_regs_base0);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, resource_size(res));
@@ -518,10 +520,28 @@ static int vpss_remove(struct platform_device *pdev)
return 0;
}
+static int vpss_suspend(struct device *dev)
+{
+ pm_runtime_put(dev);
+ return 0;
+}
+
+static int vpss_resume(struct device *dev)
+{
+ pm_runtime_get(dev);
+ return 0;
+}
+
+static const struct dev_pm_ops vpss_pm_ops = {
+ .suspend = vpss_suspend,
+ .resume = vpss_resume,
+};
+
static struct platform_driver vpss_driver = {
.driver = {
.name = "vpss",
.owner = THIS_MODULE,
+ .pm = &vpss_pm_ops,
},
.remove = vpss_remove,
.probe = vpss_probe,