openwrtv3/target/linux/omap/patches-3.12/0752-video-da8xx-fb-fix-defect-with-vsync-callback-invoca.patch

From c99bd415829ef29adf71bb1e1b577650f10e93f5 Mon Sep 17 00:00:00 2001
From: Darren Etheridge <detheridge@ti.com>
Date: Mon, 4 Nov 2013 12:27:40 -0600
Subject: [PATCH 752/752] video/da8xx-fb fix defect with vsync callback
 invocation

Fix defect where SGX is running at half of the expected framerate.
The original patch (@ commit ID 9a1a810516ae9cb3259b898b6879901c5b44fa90)
seems to have a mistake where it only calls the callback
for the even or the odd frames depending on the revision of the LCD controller
This patch corrects this and invokes the callback for both odd and even frame
for just the Rev02 version of the LCDC (won't find an SGX GPU on a Rev01).

Signed-off-by: Darren Etheridge <detheridge@ti.com>
---
 drivers/video/da8xx-fb.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -904,6 +904,8 @@ static irqreturn_t lcdc_irq_handler_rev0
 				   LCD_DMA_FRM_BUF_CEILING_ADDR_1_REG);
 			par->vsync_flag = 1;
 			wake_up_interruptible(&par->vsync_wait);
+			if (vsync_cb_handler)
+				vsync_cb_handler(vsync_cb_arg);
 		}
 
 		/* Set only when controller is disabled and at the end of
@@ -969,8 +971,6 @@ static irqreturn_t lcdc_irq_handler_rev0
 				   LCD_DMA_FRM_BUF_CEILING_ADDR_1_REG);
 			par->vsync_flag = 1;
 			wake_up_interruptible(&par->vsync_wait);
-			if (vsync_cb_handler)
-				vsync_cb_handler(vsync_cb_arg);
 		}
 	}