[PATCHv14][ 2/4] video: imxfb: Add DT default contrast control register property.

[PATCHv14][ 2/4] video: imxfb: Add DT default contrast control register property.

[Denis Carikli]

Cc: Alexander Shiyan <shc_work@mail.ru>
Cc: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Denis Carikli <denis@eukrea.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
---
ChangeLog v5->v14:
- Remove people not concerned by this patch from the Cc list.
- Changed the property name to match the register name and function.
- Updated the documentation, code and commit message accordingly.
---
 .../devicetree/bindings/video/fsl,imx-fb.txt       |    3 +++
 drivers/video/imxfb.c                              |    2 ++
 2 files changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/video/fsl,imx-fb.txt b/Documentation/devicetree/bindings/video/fsl,imx-fb.txt
index 46da08d..a2a19cb 100644
--- a/Documentation/devicetree/bindings/video/fsl,imx-fb.txt
+++ b/Documentation/devicetree/bindings/video/fsl,imx-fb.txt
@@ -17,6 +17,9 @@ Required nodes:
 Optional properties:
 - fsl,dmacr: DMA Control Register value. This is optional. By default, the
 	register is not modified as recommended by the datasheet.
+- fsl,lpccr: Contrast Control Register value. This property provides the
+	default value for the contrast control register.
+	If that property is ommited, the register is zeroed.
 - fsl,lscr1: LCDC Sharp Configuration Register value.
 
 Example:
diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index dd8a35d..c55991a 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -818,6 +818,8 @@ static int imxfb_init_fbinfo(struct platform_device *pdev)
 
 		of_property_read_u32(np, "fsl,dmacr", &fbi->dmacr);
 
+		of_property_read_u32(np, "fsl,lpccr", &fbi->pwmr);
+
 		/* These two function pointers could be used by some specific
 		 * platforms. */
 		fbi->lcd_power = NULL;
-- 
1.7.9.5