mbox series

[v5,0/4] add mt8183 dpi driver

Message ID 20190807060257.57007-1-jitao.shi@mediatek.com
Headers show
Series add mt8183 dpi driver | expand

Message

Jitao Shi Aug. 7, 2019, 6:02 a.m. UTC 
Changes since v4:
 - move pin mode control and dual edge control to deveice tree.
 - update dt-bindings document for pin mode swap and dual edge control.

Changes since v3:
 - add dpi pin mode control when dpi on or off.
 - update dpi dual edge comment.

Changes since v2:
 - update dt-bindings document for mt8183 dpi.
 - separate dual edge modfication as independent patch.

Jitao Shi (4):
  dt-bindings: display: mediatek: update dpi  supported chips
  drm/mediatek: dpi dual edge support
  drm/mediatek: add mt8183 dpi clock factor
  drm/mediatek: control dpi pins dpi or gpio mode in on or off

 .../display/mediatek/mediatek,dpi.txt         | 11 +++
 drivers/gpu/drm/mediatek/mtk_dpi.c            | 71 ++++++++++++++++++-
 2 files changed, 80 insertions(+), 2 deletions(-)

Comments

CK Hu (胡俊光) Aug. 8, 2019, 7:14 a.m. UTC | #1 
Hi, Jitao:

On Wed, 2019-08-07 at 14:02 +0800, Jitao Shi wrote:
> The factor depends on the divider of DPI in MT8183, therefore,
> we should fix this factor to the right and new one.
> 

Reviewed-by: CK Hu <ck.hu@mediatek.com>

> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_dpi.c | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index 743230864ba0..4f2700cbfdb7 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -672,6 +672,16 @@ static unsigned int mt2701_calculate_factor(int clock)
>  		return 1;
>  }
>  
> +static unsigned int mt8183_calculate_factor(int clock)
> +{
> +	if (clock <= 27000)
> +		return 8;
> +	else if (clock <= 167000)
> +		return 4;
> +	else
> +		return 2;
> +}
> +
>  static const struct mtk_dpi_conf mt8173_conf = {
>  	.cal_factor = mt8173_calculate_factor,
>  	.reg_h_fre_con = 0xe0,
> @@ -683,6 +693,11 @@ static const struct mtk_dpi_conf mt2701_conf = {
>  	.edge_sel_en = true,
>  };
>  
> +static const struct mtk_dpi_conf mt8183_conf = {
> +	.cal_factor = mt8183_calculate_factor,
> +	.reg_h_fre_con = 0xe0,
> +};
> +
>  static int mtk_dpi_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
> @@ -779,6 +794,9 @@ static const struct of_device_id mtk_dpi_of_ids[] = {
>  	{ .compatible = "mediatek,mt8173-dpi",
>  	  .data = &mt8173_conf,
>  	},
> +	{ .compatible = "mediatek,mt8183-dpi",
> +	  .data = &mt8183_conf,
> +	},
>  	{ },
>  };
>