diff mbox

[v3,5/8] media: rcar-vin: Handle data-enable polarity

Message ID 1527606359-19261-6-git-send-email-jacopo+renesas@jmondi.org (mailing list archive)
State New, archived
Headers show

Commit Message

Jacopo Mondi May 29, 2018, 3:05 p.m. UTC 
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>
---
v3:
- use new property to set the CES bit
---
 drivers/media/platform/rcar-vin/rcar-dma.c | 5 +++++
 1 file changed, 5 insertions(+)

--
2.7.4

Comments

Niklas Söderlund June 4, 2018, 12:13 p.m. UTC | #1 
Hi Jacopo,

Thanks for your work.

On 2018-05-29 17:05:56 +0200, Jacopo Mondi wrote:
> 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>

> ---
> v3:
> - use new property to set the CES bit
> ---
>  drivers/media/platform/rcar-vin/rcar-dma.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
> index d2b7002..9145b56 100644
> --- a/drivers/media/platform/rcar-vin/rcar-dma.c
> +++ b/drivers/media/platform/rcar-vin/rcar-dma.c
> @@ -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;
>  	}
> 
>  	/*
> --
> 2.7.4
>
diff mbox

Patch

diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
index d2b7002..9145b56 100644
--- a/drivers/media/platform/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/rcar-vin/rcar-dma.c
@@ -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;
 	}

 	/*