lkml.org 
[lkml]   [2019]   [Jun]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v3, 20/27] drm/mediatek: add background color input select function for ovl/ovl_2l
From
Date
Hi, Yongqiang:

On Wed, 2019-06-05 at 19:42 +0800, yongqiang.niu@mediatek.com wrote:
> From: Yongqiang Niu <yongqiang.niu@mediatek.com>
>
> This patch add background color input select function for ovl/ovl_2l
>
> ovl include 4 DRAM layer and 1 background color layer
> ovl_2l include 4 DRAM layer and 1 background color layer
> DRAM layer frame buffer data from render hardware, GPU for example.
> backgournd color layer is embed in ovl/ovl_2l, we can only set
> it color, but not support DRAM frame buffer.
>
> for ovl0->ovl0_2l direct link usecase,
> we need set ovl0_2l background color intput select from ovl0
> if render send DRAM buffer layer number <=4, all these layer read
> by ovl.
> layer0 is at the bottom of all layers.
> layer3 is at the top of all layers.
> if render send DRAM buffer layer numbfer >=4 && <=6
> ovl0 read layer0~3
> ovl0_2l read layer4~5
> layer5 is at the top ot all these layers.
>
> the decision of how to setting ovl0/ovl0_2l read these layer data
> is controlled in mtk crtc, which will be another patch
>
> Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 23 +++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> index a0ab760..b5a9907 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> @@ -27,6 +27,8 @@
> #define DISP_REG_OVL_EN 0x000c
> #define DISP_REG_OVL_RST 0x0014
> #define DISP_REG_OVL_ROI_SIZE 0x0020
> +#define DISP_REG_OVL_DATAPATH_CON 0x0024
> +#define OVL_BGCLR_SEL_IN BIT(2)
> #define DISP_REG_OVL_ROI_BGCLR 0x0028
> #define DISP_REG_OVL_SRC_CON 0x002c
> #define DISP_REG_OVL_CON(n) (0x0030 + 0x20 * (n))
> @@ -245,6 +247,25 @@ static void mtk_ovl_layer_config(struct mtk_ddp_comp *comp, unsigned int idx,
> mtk_ovl_layer_on(comp, idx);
> }
>
> +static void mtk_ovl_bgclr_in_on(struct mtk_ddp_comp *comp,
> + enum mtk_ddp_comp_id prev)

prev is useless, so remove it.

Regards,
CK

> +{
> + unsigned int reg;
> +
> + reg = readl(comp->regs + DISP_REG_OVL_DATAPATH_CON);
> + reg = reg | OVL_BGCLR_SEL_IN;
> + writel(reg, comp->regs + DISP_REG_OVL_DATAPATH_CON);
> +}
> +
> +static void mtk_ovl_bgclr_in_off(struct mtk_ddp_comp *comp)
> +{
> + unsigned int reg;
> +
> + reg = readl(comp->regs + DISP_REG_OVL_DATAPATH_CON);
> + reg = reg & ~OVL_BGCLR_SEL_IN;
> + writel(reg, comp->regs + DISP_REG_OVL_DATAPATH_CON);
> +}
> +
> static const struct mtk_ddp_comp_funcs mtk_disp_ovl_funcs = {
> .config = mtk_ovl_config,
> .start = mtk_ovl_start,
> @@ -255,6 +276,8 @@ static void mtk_ovl_layer_config(struct mtk_ddp_comp *comp, unsigned int idx,
> .layer_on = mtk_ovl_layer_on,
> .layer_off = mtk_ovl_layer_off,
> .layer_config = mtk_ovl_layer_config,
> + .bgclr_in_on = mtk_ovl_bgclr_in_on,
> + .bgclr_in_off = mtk_ovl_bgclr_in_off,
> };
>
> static int mtk_disp_ovl_bind(struct device *dev, struct device *master,


\
 
 \ /
  Last update: 2019-06-14 07:07    [W:0.232 / U:0.848 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site