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| author | Shuijing Li <shuijing.li@mediatek.com> | 2023-09-11 15:07:59 +0300 |
|---|---|---|
| committer | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2023-09-11 17:54:11 +0300 |
| commit | 2ccf6e2580cdc192b6cb034c98485cca6ccc8f58 (patch) | |
| tree | f3ba53762b28eb87e5aa869283af28a7e6d2a51f /drivers/gpu/drm/mediatek | |
| parent | 81d707f32eb913f3296246ab9e2e6edf1a97064b (diff) | |
| download | linux-2ccf6e2580cdc192b6cb034c98485cca6ccc8f58.tar.xz | |
drm/mediatek: dsi: Add dsi cmdq_ctl to send panel initial code
For mt8188, add dsi cmdq reg control to send long packets to panel
initialization. MT8188 hardware has been changed to automatically
set the cmdq_size value by default when sending long packets.
In this patch, the cmdq_size value is set manually instead.
Remain consistent with previous IC.
Signed-off-by: Shuijing Li <shuijing.li@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20230911120800.17369-3-shuijing.li@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/mediatek')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_dsi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index d8bfc2cce54d..623aa829ef6b 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -86,6 +86,7 @@ #define DSI_CMDQ_SIZE 0x60 #define CMDQ_SIZE 0x3f +#define CMDQ_SIZE_SEL BIT(15) #define DSI_HSTX_CKL_WC 0x64 @@ -178,6 +179,7 @@ struct mtk_dsi_driver_data { const u32 reg_cmdq_off; bool has_shadow_ctl; bool has_size_ctl; + bool cmdq_long_packet_ctl; }; struct mtk_dsi { @@ -996,6 +998,10 @@ static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct mipi_dsi_msg *msg) mtk_dsi_mask(dsi, reg_cmdq_off, cmdq_mask, reg_val); mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size); + if (dsi->driver_data->cmdq_long_packet_ctl) { + /* Disable setting cmdq_size automatically for long packets */ + mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL); + } } static ssize_t mtk_dsi_host_send_cmd(struct mtk_dsi *dsi, |