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SubjectRe: [PATCH 19/28] drm/mediatek: add connection from RDMA2 to DPI1
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Hi, Stu:

On Wed, 2018-06-13 at 16:01 +0800, Stu Hsieh wrote:
> Hi, CK:
>
>
> On Wed, 2018-06-13 at 15:13 +0800, CK Hu wrote:
> > Hi, Stu:
> >
> > On Mon, 2018-06-11 at 11:26 +0800, Stu Hsieh wrote:
> > > This patch add the connection from RDMA2 to DPI1
> > >
> > > Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>
> > > ---
> > > drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 8 ++++++++
> > > 1 file changed, 8 insertions(+)
> > >
> > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> > > index 31a0832ef9ec..2d883815d79c 100644
> > > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> > > @@ -93,9 +93,11 @@
> > > #define RDMA1_MOUT_DPI0 0x2
> > > #define RDMA1_MOUT_DPI1 0x3
> > > #define RDMA2_MOUT_DPI0 0x2
> > > +#define RDMA2_MOUT_DPI1 0x3
> >
> > Usually, each bit of a mout register represent a output enable. Is this
> > value 0x3 a correct value?
> >
> > Regards,
> > CK
> >
> In HW CONFIG SPEC or MT2712_E2_MMSYS_Change_note show as following:
>
> Bit(s) Name Description
> 2:0 DISP_RDMA2_SOUT_SEL_IN 0: output to dsi0
> 1: outptu to dsi1
> 2: output to dpi0
> 3: output to dpi1
> 4: output to dsi2
> 5: output to dsi3
>
> So, 0x3 is correct value.

The data sheet use the term SOUT match its function, so I think driver
have better change the naming to SOUT.

Regards,
CK

>
> Regard,
> Stu
>
> > > #define DPI0_SEL_IN_RDMA1 0x1
> > > #define DPI0_SEL_IN_RDMA2 0x3
> > > #define DPI1_SEL_IN_RDMA1 (0x1 << 8)
> > > +#define DPI1_SEL_IN_RDMA2 (0x3 << 8)
> > > #define DSI1_SEL_IN_RDMA1 0x1
> > > #define DSI2_SEL_IN_RDMA1 (0x1 << 16)
> > > #define DSI3_SEL_IN_RDMA1 (0x1 << 16)
> > > @@ -199,6 +201,9 @@ static unsigned int mtk_ddp_mout_en(enum mtk_ddp_comp_id cur,
> > > } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
> > > *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
> > > value = RDMA2_MOUT_DPI0;
> > > + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
> > > + *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
> > > + value = RDMA2_MOUT_DPI1;
> > > } else {
> > > value = 0;
> > > }
> > > @@ -233,6 +238,9 @@ static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur,
> > > } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
> > > *addr = DISP_REG_CONFIG_DPI_SEL_IN;
> > > value = DPI0_SEL_IN_RDMA2;
> > > + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
> > > + *addr = DISP_REG_CONFIG_DPI_SEL_IN;
> > > + value = DPI1_SEL_IN_RDMA2;
> > > } else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
> > > *addr = DISP_REG_CONFIG_DISP_COLOR1_SEL_IN;
> > > value = COLOR1_SEL_IN_OVL1;
> >
> >
>
>


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