On 16/06/2023 09:36, Shuijing Li wrote:
For mt8188, add dsi cmdq reg control to send long packets to panel
initialization.
Signed-off-by: Shuijing Li <shuijing.li@xxxxxxxxxxxx>
Signed-off-by: Jitao Shi <jitao.shi@xxxxxxxxxxxx>
Reviewed-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
---
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,
};
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,
};
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[] = {
