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drm/msm/dsi: set VIDEO_COMPRESSION_MODE_CTRL_WC

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[ Upstream commit 9ecd0ddd223b68b4603e4766a1d51f6c6cda346e ]

Video mode DSC won't work if this field is not set correctly. Set it to fix
video mode DSC (for slice_per_pkt==1 cases at least).

Fixes: 08802f515c3c ("drm/msm/dsi: Add support for DSC configuration")
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Jun Nie <jun.nie@linaro.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-HDK
Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/596234/
Link: https://lore.kernel.org/r/20240530-msm-drm-dsc-dsi-video-upstream-4-v6-5-2ab1d334c657@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jonathan Marek 2024-05-30 13:56:49 +08:00 committed by Greg Kroah-Hartman
parent 734ba6437e
commit 8621fc9ace
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/msm/dsi/dsi_host.c
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@ -848,6 +848,7 @@ static void dsi_update_dsc_timing(struct msm_dsi_host *msm_host, bool is_cmd_mod
u32 slice_per_intf, total_bytes_per_intf;
u32 pkt_per_line;
u32 eol_byte_num;
u32 bytes_per_pkt;
/* first calculate dsc parameters and then program
* compress mode registers
@ -855,6 +856,7 @@ static void dsi_update_dsc_timing(struct msm_dsi_host *msm_host, bool is_cmd_mod
slice_per_intf = DIV_ROUND_UP(hdisplay, dsc->slice_width);
total_bytes_per_intf = dsc->slice_chunk_size * slice_per_intf;
bytes_per_pkt = dsc->slice_chunk_size; /* * slice_per_pkt; */
eol_byte_num = total_bytes_per_intf % 3;
@ -892,6 +894,7 @@ static void dsi_update_dsc_timing(struct msm_dsi_host *msm_host, bool is_cmd_mod
dsi_write(msm_host, REG_DSI_COMMAND_COMPRESSION_MODE_CTRL, reg_ctrl);
dsi_write(msm_host, REG_DSI_COMMAND_COMPRESSION_MODE_CTRL2, reg_ctrl2);
} else {
reg |= DSI_VIDEO_COMPRESSION_MODE_CTRL_WC(bytes_per_pkt);
dsi_write(msm_host, REG_DSI_VIDEO_COMPRESSION_MODE_CTRL, reg);
}
}