[PATCH 1/2] drm/panel: Enable DSC for Visionox VTDR6130 panel

[Neil Armstrong <neil.armstrong@linaro.org>]

From: Jun Nie <jun.nie@linaro.org>

Enable display compression (DSC v1.2) for 1080x2400 Visionox
VTDR6130 AMOLED DSI panel.

This panel is the default panel for the following devices:
- SM8550-QRD
- SM8550-HDK
- SM8650-QRD
- SM8650-HDK

Enable DSC since now functional in the MSM/DPU/DSI driver.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 drivers/gpu/drm/panel/panel-visionox-vtdr6130.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
index 97a79411e1ec..0cdcdbbc766d 100644
--- a/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
+++ b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
@@ -9,6 +9,7 @@
 #include <linux/of.h>
 
 #include <drm/display/drm_dsc.h>
+#include <drm/display/drm_dsc_helper.h>
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
@@ -17,6 +18,7 @@
 
 struct visionox_vtdr6130 {
 	struct drm_panel panel;
+	struct drm_dsc_config dsc;
 	struct mipi_dsi_device *dsi;
 	struct gpio_desc *reset_gpio;
 	struct regulator_bulk_data *supplies;
@@ -47,9 +49,12 @@ static int visionox_vtdr6130_on(struct visionox_vtdr6130 *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi;
 	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
+	struct drm_dsc_picture_parameter_set pps;
 
 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x03, 0x01);
+
 	mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
 
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx,
@@ -123,6 +128,9 @@ static int visionox_vtdr6130_on(struct visionox_vtdr6130 *ctx)
 	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
 	mipi_dsi_msleep(&dsi_ctx, 20);
 
+	drm_dsc_pps_payload_pack(&pps, dsi->dsc);
+	mipi_dsi_picture_parameter_set_multi(&dsi_ctx, &pps);
+
 	return dsi_ctx.accum_err;
 }
 
@@ -269,6 +277,16 @@ static int visionox_vtdr6130_probe(struct mipi_dsi_device *dsi)
 	ctx->dsi = dsi;
 	mipi_dsi_set_drvdata(dsi, ctx);
 
+	ctx->dsc.dsc_version_major = 0x1;
+	ctx->dsc.dsc_version_minor = 0x2;
+	ctx->dsc.slice_height = 40;
+	ctx->dsc.slice_width = 540;
+	ctx->dsc.slice_count = 2;
+	ctx->dsc.bits_per_component = 8;
+	ctx->dsc.bits_per_pixel = 8 << 4;
+	ctx->dsc.block_pred_enable = true;
+
+	dsi->dsc = &ctx->dsc;
 	dsi->lanes = 4;
 	dsi->format = MIPI_DSI_FMT_RGB888;
 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET |

-- 
2.34.1