4.17-stable review patch. If anyone has any objections, please let me know.
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From: Maciej Purski m.purski@samsung.com
[ Upstream commit e8b92efa629dac0e70ea4145c5e70616de5f89c8 ]
Currently packed pixel modes in MHL2 can't be displayed. The device automatically recognizes output format, so setting format other than RGB causes failure. Fix it by writing proper values to registers.
Tested on MHL1 and MHL2 using various vendors' dongles both in DVI and HDMI mode.
Signed-off-by: Maciej Purski m.purski@samsung.com Signed-off-by: Andrzej Hajda a.hajda@samsung.com Link: https://patchwork.freedesktop.org/patch/msgid/1516706239-9104-1-git-send-ema... Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/bridge/sil-sii8620.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-)
--- a/drivers/gpu/drm/bridge/sil-sii8620.c +++ b/drivers/gpu/drm/bridge/sil-sii8620.c @@ -1060,20 +1060,11 @@ static void sii8620_stop_video(struct si
static void sii8620_set_format(struct sii8620 *ctx) { - u8 out_fmt; - if (sii8620_is_mhl3(ctx)) { sii8620_setbits(ctx, REG_M3_P0CTRL, BIT_M3_P0CTRL_MHL3_P0_PIXEL_MODE_PACKED, ctx->use_packed_pixel ? ~0 : 0); } else { - if (ctx->use_packed_pixel) - sii8620_write_seq_static(ctx, - REG_VID_MODE, BIT_VID_MODE_M1080P, - REG_MHL_TOP_CTL, BIT_MHL_TOP_CTL_MHL_PP_SEL | 1, - REG_MHLTX_CTL6, 0x60 - ); - else sii8620_write_seq_static(ctx, REG_VID_MODE, 0, REG_MHL_TOP_CTL, 1, @@ -1081,15 +1072,9 @@ static void sii8620_set_format(struct si ); }
- if (ctx->use_packed_pixel) - out_fmt = VAL_TPI_FORMAT(YCBCR422, FULL) | - BIT_TPI_OUTPUT_CSCMODE709; - else - out_fmt = VAL_TPI_FORMAT(RGB, FULL); - sii8620_write_seq(ctx, REG_TPI_INPUT, VAL_TPI_FORMAT(RGB, FULL), - REG_TPI_OUTPUT, out_fmt, + REG_TPI_OUTPUT, VAL_TPI_FORMAT(RGB, FULL), ); }