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media: rcar-vin: Handle data-enable polarity 

Handle data-enable signal polarity. If the polarity is not specifically
requested to be active low, use the active high default.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Jacopo Mondi 2018-07-09 10:19:21 -04:00 committed by Mauro Carvalho Chehab
parent d9b3c77a14
commit 53cf3100dd
1 changed files with 5 additions and 0 deletions
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5
drivers/media/platform/rcar-vin/rcar-dma.c
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@ -123,6 +123,7 @@
/* Video n Data Mode Register 2 bits */
#define VNDMR2_VPS (1 << 30)
#define VNDMR2_HPS (1 << 29)
#define VNDMR2_CES (1 << 28)
#define VNDMR2_FTEV (1 << 17)
#define VNDMR2_VLV(n) ((n & 0xf) << 12)
@ -698,6 +699,10 @@ static int rvin_setup(struct rvin_dev *vin)
/* Vsync Signal Polarity Select */
if (!(vin->parallel->mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW))
dmr2 |= VNDMR2_VPS;
/* Data Enable Polarity Select */
if (vin->parallel->mbus_flags & V4L2_MBUS_DATA_ENABLE_LOW)
dmr2 |= VNDMR2_CES;
}
/*