This is a note to let you know that I've just added the patch titled
drm/mediatek: mtk_dsi: Add registers to pdata to fix MT8186/MT8188
to the 6.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-mediatek-mtk_dsi-add-registers-to-pdata-to-fix-m.patch
and it can be found in the queue-6.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1a5ffe9ca690a6df4f315809a2e33115bd916206
Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Date: Thu Dec 19 12:27:33 2024 +0100
drm/mediatek: mtk_dsi: Add registers to pdata to fix MT8186/MT8188
[ Upstream commit 76aed5e00ff2625e0ec4b40c75f3514bdb27fae4 ]
Registers DSI_VM_CMD and DSI_SHADOW_DEBUG start at different
addresses in both MT8186 and MT8188 compared to the older IPs.
Add two members in struct mtk_dsi_driver_data to specify the
offsets for these two registers on a per-SoC basis, then do
specify those in all of the currently present SoC driver data.
This fixes writes to the Video Mode Command Packet Control
register, fixing enablement of command packet transmission
(VM_CMD_EN) and allowance of this transmission during the
VFP period (TS_VFP_EN) on both MT8186 and MT8188.
Fixes: 03d7adc41027 ("drm/mediatek: Add mt8186 dsi compatible to mtk_dsi.c")
Fixes: 814d5341f314 ("drm/mediatek: Add mt8188 dsi compatible to mtk_dsi.c")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20241219112733.47907-1-angelogioacchino.delregno@xxxxxxxxxxxxx/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index eeec641cab60..5762cff4d6f5 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -139,11 +139,11 @@
#define CLK_HS_POST GENMASK(15, 8)
#define CLK_HS_EXIT GENMASK(23, 16)
-#define DSI_VM_CMD_CON 0x130
+/* DSI_VM_CMD_CON */
#define VM_CMD_EN BIT(0)
#define TS_VFP_EN BIT(5)
-#define DSI_SHADOW_DEBUG 0x190U
+/* DSI_SHADOW_DEBUG */
#define FORCE_COMMIT BIT(0)
#define BYPASS_SHADOW BIT(1)
@@ -187,6 +187,8 @@ struct phy;
struct mtk_dsi_driver_data {
const u32 reg_cmdq_off;
+ const u32 reg_vm_cmd_off;
+ const u32 reg_shadow_dbg_off;
bool has_shadow_ctl;
bool has_size_ctl;
bool cmdq_long_packet_ctl;
@@ -367,8 +369,8 @@ static void mtk_dsi_set_mode(struct mtk_dsi *dsi)
static void mtk_dsi_set_vm_cmd(struct mtk_dsi *dsi)
{
- mtk_dsi_mask(dsi, DSI_VM_CMD_CON, VM_CMD_EN, VM_CMD_EN);
- mtk_dsi_mask(dsi, DSI_VM_CMD_CON, TS_VFP_EN, TS_VFP_EN);
+ mtk_dsi_mask(dsi, dsi->driver_data->reg_vm_cmd_off, VM_CMD_EN, VM_CMD_EN);
+ mtk_dsi_mask(dsi, dsi->driver_data->reg_vm_cmd_off, TS_VFP_EN, TS_VFP_EN);
}
static void mtk_dsi_rxtx_control(struct mtk_dsi *dsi)
@@ -714,7 +716,7 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi)
if (dsi->driver_data->has_shadow_ctl)
writel(FORCE_COMMIT | BYPASS_SHADOW,
- dsi->regs + DSI_SHADOW_DEBUG);
+ dsi->regs + dsi->driver_data->reg_shadow_dbg_off);
mtk_dsi_reset_engine(dsi);
mtk_dsi_phy_timconfig(dsi);
@@ -1255,26 +1257,36 @@ static void mtk_dsi_remove(struct platform_device *pdev)
static const struct mtk_dsi_driver_data mt8173_dsi_driver_data = {
.reg_cmdq_off = 0x200,
+ .reg_vm_cmd_off = 0x130,
+ .reg_shadow_dbg_off = 0x190
};
static const struct mtk_dsi_driver_data mt2701_dsi_driver_data = {
.reg_cmdq_off = 0x180,
+ .reg_vm_cmd_off = 0x130,
+ .reg_shadow_dbg_off = 0x190
};
static const struct mtk_dsi_driver_data mt8183_dsi_driver_data = {
.reg_cmdq_off = 0x200,
+ .reg_vm_cmd_off = 0x130,
+ .reg_shadow_dbg_off = 0x190,
.has_shadow_ctl = true,
.has_size_ctl = true,
};
static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
.reg_cmdq_off = 0xd00,
+ .reg_vm_cmd_off = 0x200,
+ .reg_shadow_dbg_off = 0xc00,
.has_shadow_ctl = true,
.has_size_ctl = true,
};
static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
.reg_cmdq_off = 0xd00,
+ .reg_vm_cmd_off = 0x200,
+ .reg_shadow_dbg_off = 0xc00,
.has_shadow_ctl = true,
.has_size_ctl = true,
.cmdq_long_packet_ctl = true,
