From: 杜坤明 <dkm@rockchip.com>
Date: Wed, 20 Apr 2011 04:12:37 +0000 (+0800)
Subject: gpu: add delay early_suspend for Camera App
X-Git-Tag: firefly_0821_release~10442
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3f827c45288e46d2e6ad4f51e4847ef5b6aef279;p=firefly-linux-kernel-4.4.55.git

gpu: add delay early_suspend for Camera App
---

diff --git a/drivers/staging/rk29/vivante/hal/inc/gc_hal_options.h b/drivers/staging/rk29/vivante/hal/inc/gc_hal_options.h
index 6e480912cd9c..f4158b80905c 100755
--- a/drivers/staging/rk29/vivante/hal/inc/gc_hal_options.h
+++ b/drivers/staging/rk29/vivante/hal/inc/gc_hal_options.h
@@ -274,5 +274,13 @@
 */
 #define gcdENABLE_MEM_CACHE                 2
 
+/*
+    gcdENABLE_DELAY_EARLY_SUSPEND
+
+    ÔÚgpu_early_suspendÖÐʹÓÃÑÓʱ¹¤×÷¶ÓÁÐÀ´Ö´ÐÐsuspend,
+    ±ÜÃâgpu_early_suspend¹ýÔçÖ´Ðе¼ÖÂÓû§Ï̵߳ÄÊÂÇ黹´¦Àí¸É¾»
+*/
+#define gcdENABLE_DELAY_EARLY_SUSPEND       0
+
 #endif /* __gc_hal_options_h_ */
 
diff --git a/drivers/staging/rk29/vivante/hal/os/linux/kernel/gc_hal_kernel_driver.c b/drivers/staging/rk29/vivante/hal/os/linux/kernel/gc_hal_kernel_driver.c
index 986346bd9af9..a3d37bc22cfc 100755
--- a/drivers/staging/rk29/vivante/hal/os/linux/kernel/gc_hal_kernel_driver.c
+++ b/drivers/staging/rk29/vivante/hal/os/linux/kernel/gc_hal_kernel_driver.c
@@ -26,6 +26,7 @@
 #include <linux/slab.h>
 #include <linux/earlysuspend.h>
 #include <linux/delay.h>
+#include <linux/workqueue.h>
 
 #include "gc_hal_kernel_linux.h"
 #include "gc_hal_driver.h"
@@ -150,6 +151,22 @@ void gputimer_callback(unsigned long arg)
 }
 #endif
 
+#if gcdENABLE_DELAY_EARLY_SUSPEND
+struct delayed_work suspend_work;
+void real_suspend(struct work_struct *work)
+{
+    gceSTATUS status;
+
+    status = gckHARDWARE_SetPowerManagementState(galDevice->kernel->hardware, gcvPOWER_OFF);
+
+    if (gcmIS_ERROR(status))
+    {
+        printk("%s fail!\n", __func__);
+        return;
+    }
+}
+#endif
+
 int drv_open(struct inode *inode, struct file* filp)
 {
     gcsHAL_PRIVATE_DATA_PTR	private;
@@ -753,6 +770,9 @@ module_exit(drv_exit);
 #if CONFIG_HAS_EARLYSUSPEND
 static void gpu_early_suspend(struct early_suspend *h)
 {
+#if gcdENABLE_DELAY_EARLY_SUSPEND
+    schedule_delayed_work(&suspend_work, 5*HZ);
+#else
 	gceSTATUS status;
 
 	status = gckHARDWARE_SetPowerManagementState(galDevice->kernel->hardware, gcvPOWER_OFF);
@@ -762,12 +782,16 @@ static void gpu_early_suspend(struct early_suspend *h)
 	    printk("%s fail!\n", __func__);
 		return;
 	}
+#endif
 }
 
 static void gpu_early_resume(struct early_suspend *h)
 {
 	gceSTATUS status;
-    
+
+#if gcdENABLE_DELAY_EARLY_SUSPEND
+    cancel_delayed_work_sync(&suspend_work);
+#endif
 	status = gckHARDWARE_SetPowerManagementState(galDevice->kernel->hardware, gcvPOWER_ON);
 
 	if (gcmIS_ERROR(status))
@@ -822,6 +846,10 @@ static int __devinit gpu_probe(struct platform_device *pdev)
     register_early_suspend(&gpu_early_suspend_info);
 #endif
 
+#if gcdENABLE_DELAY_EARLY_SUSPEND
+    INIT_DELAYED_WORK(&suspend_work, real_suspend);
+#endif
+
 	ret = drv_init();
 	if(!ret) {
 		platform_set_drvdata(pdev,galDevice);
@@ -835,8 +863,10 @@ gpu_probe_fail:
 
 static int __devinit gpu_remove(struct platform_device *pdev)
 {
+#if gcdENABLE_DELAY_EARLY_SUSPEND
+    cancel_delayed_work_sync(&suspend_work);
+#endif
 	drv_exit();
-
 	return 0;
 }
 
@@ -844,7 +874,10 @@ static int __devinit gpu_suspend(struct platform_device *dev, pm_message_t state
 {
 	gceSTATUS status;
 	gckGALDEVICE device;
-
+    
+#if gcdENABLE_DELAY_EARLY_SUSPEND
+    cancel_delayed_work_sync(&suspend_work);
+#endif
 	device = platform_get_drvdata(dev);
 
 	status = gckHARDWARE_SetPowerManagementState(device->kernel->hardware, gcvPOWER_OFF);
@@ -878,6 +911,9 @@ static int __devinit gpu_resume(struct platform_device *dev)
 
 static void __devinit gpu_shutdown(struct platform_device *dev)
 {
+#if gcdENABLE_DELAY_EARLY_SUSPEND
+    cancel_delayed_work_sync(&suspend_work);
+#endif
     drv_exit();
 }