Hi, Shuijing: On Fri, 2023-06-16 at 15:36 +0800, Shuijing Li wrote: > For mt8188, add dsi cmdq reg control to send long packets to panel > initialization. If possible, describe more about WHY mt8188 need this but other SoC does not need this. > > Signed-off-by: Shuijing Li <shuijing.li@xxxxxxxxxxxx> > Signed-off-by: Jitao Shi <jitao.shi@xxxxxxxxxxxx> > --- > Changes in v2: > use mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL); > directly, > per suggestion from the previous thread: > https://lore.kernel.org/lkml/015f4c60-ed77-9e1f-8a6b-cda6e4f6ac93@xxxxxxxxx/ > --- > drivers/gpu/drm/mediatek/mtk_dsi.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c > b/drivers/gpu/drm/mediatek/mtk_dsi.c > index 500a3054282d..8b43d9f48178 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 +998,8 @@ 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) > + 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, > @@ -1200,18 +1204,21 @@ static const struct mtk_dsi_driver_data > mt8183_dsi_driver_data = { > .reg_cmdq_off = 0x200, > .has_shadow_ctl = true, > .has_size_ctl = true, > + .cmdq_long_packet_ctl = false, Global variable default value is 0, so this modification could be dropped. > }; > > static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = { > .reg_cmdq_off = 0xd00, > .has_shadow_ctl = true, > .has_size_ctl = true, > + .cmdq_long_packet_ctl = false, Ditto. Regards, CK > }; > > static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = { > .reg_cmdq_off = 0xd00, > .has_shadow_ctl = true, > .has_size_ctl = true, > + .cmdq_long_packet_ctl = true, > }; > > static const struct of_device_id mtk_dsi_of_match[] = {
