fbdev: bfin-t350mcqb-fb: handle all resources in suspend/resume

The LCD commands DMA/timers as well as PPI which we need to save/restore.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 23 insertions, 5 deletions

diff --git a/drivers/video/bfin-t350mcqb-fb.c b/drivers/video/bfin-t350mcqb-fb.c
index 5cc36cfbf07b..46cb07f61b0f 100644
--- a/drivers/video/bfin-t350mcqb-fb.c
+++ b/drivers/video/bfin-t350mcqb-fb.c
@@ -634,17 +634,35 @@ static int __devexit bfin_t350mcqb_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM
 static int bfin_t350mcqb_suspend(struct platform_device *pdev, pm_message_t state)
 {
-        bfin_t350mcqb_disable_ppi();
-        disable_dma(CH_PPI);
-        bfin_write_PPI_STATUS(0xFFFF);
+        struct fb_info *fbinfo = platform_get_drvdata(pdev);
+        struct bfin_t350mcqbfb_info *fbi = fbinfo->par;
+
+        if (fbi->lq043_open_cnt) {
+                bfin_t350mcqb_disable_ppi();
+                disable_dma(CH_PPI);
+                bfin_t350mcqb_stop_timers();
+                bfin_write_PPI_STATUS(-1);
+        }
+
 
         return 0;
 }
 
 static int bfin_t350mcqb_resume(struct platform_device *pdev)
 {
-        enable_dma(CH_PPI);
-        bfin_t350mcqb_enable_ppi();
+        struct fb_info *fbinfo = platform_get_drvdata(pdev);
+        struct bfin_t350mcqbfb_info *fbi = fbinfo->par;
+
+        if (fbi->lq043_open_cnt) {
+                bfin_t350mcqb_config_dma(fbi);
+                bfin_t350mcqb_config_ppi(fbi);
+                bfin_t350mcqb_init_timers();
+
+                /* start dma */
+                enable_dma(CH_PPI);
+                bfin_t350mcqb_enable_ppi();
+                bfin_t350mcqb_start_timers();
+        }
 
         return 0;
 }