diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-6.1/950-1182-drm-panel-add-panel-dsi.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-6.1/950-1182-drm-panel-add-panel-dsi.patch | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-6.1/950-1182-drm-panel-add-panel-dsi.patch b/target/linux/bcm27xx/patches-6.1/950-1182-drm-panel-add-panel-dsi.patch new file mode 100644 index 0000000000..d914ab6d04 --- /dev/null +++ b/target/linux/bcm27xx/patches-6.1/950-1182-drm-panel-add-panel-dsi.patch @@ -0,0 +1,176 @@ +From 0a0084b8621682ad96d001e798aa239b11a3cf00 Mon Sep 17 00:00:00 2001 +From: Timon Skerutsch <kernel@diodes-delight.com> +Date: Mon, 13 Nov 2023 22:53:12 +0100 +Subject: [PATCH] drm/panel: add panel-dsi + +Equivalent to panel-dpi for configuring a simple DSI panel with +device tree side timings and bus settings. +Motiviation is the same as for panel-dpi of wanting to support +new simple panels without needing to patch the kernel. + +Signed-off-by: Timon Skerutsch <kernel@diodes-delight.com> +--- + drivers/gpu/drm/panel/panel-simple.c | 123 ++++++++++++++++++++++++++- + 1 file changed, 122 insertions(+), 1 deletion(-) + +--- a/drivers/gpu/drm/panel/panel-simple.c ++++ b/drivers/gpu/drm/panel/panel-simple.c +@@ -40,6 +40,7 @@ + #include <drm/drm_edid.h> + #include <drm/drm_mipi_dsi.h> + #include <drm/drm_panel.h> ++#include <drm/drm_of.h> + + /** + * struct panel_desc - Describes a simple panel. +@@ -4660,6 +4661,9 @@ static const struct panel_desc_dsi osd10 + .lanes = 4, + }; + ++// for panels using generic panel-dsi binding ++static struct panel_desc_dsi panel_dsi; ++ + static const struct of_device_id dsi_of_match[] = { + { + .compatible = "auo,b080uan01", +@@ -4683,14 +4687,118 @@ static const struct of_device_id dsi_of_ + .compatible = "osddisplays,osd101t2045-53ts", + .data = &osd101t2045_53ts + }, { ++ /* Must be the last entry */ ++ .compatible = "panel-dsi", ++ .data = &panel_dsi, ++ }, { + /* sentinel */ + } + }; + MODULE_DEVICE_TABLE(of, dsi_of_match); + ++ ++/* Checks for DSI panel definition in device-tree, analog to panel_dpi */ ++static int panel_dsi_dt_probe(struct device *dev, ++ struct panel_desc_dsi *desc_dsi) ++{ ++ struct panel_desc *desc; ++ struct display_timing *timing; ++ const struct device_node *np; ++ const char *dsi_color_format; ++ const char *dsi_mode_flags; ++ struct property *prop; ++ int dsi_lanes, ret; ++ ++ np = dev->of_node; ++ ++ desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); ++ if (!desc) ++ return -ENOMEM; ++ ++ timing = devm_kzalloc(dev, sizeof(*timing), GFP_KERNEL); ++ if (!timing) ++ return -ENOMEM; ++ ++ ret = of_get_display_timing(np, "panel-timing", timing); ++ if (ret < 0) { ++ dev_err(dev, "%pOF: no panel-timing node found for \"panel-dsi\" binding\n", ++ np); ++ return ret; ++ } ++ ++ desc->timings = timing; ++ desc->num_timings = 1; ++ ++ of_property_read_u32(np, "width-mm", &desc->size.width); ++ of_property_read_u32(np, "height-mm", &desc->size.height); ++ ++ dsi_lanes = drm_of_get_data_lanes_count_ep(np, 0, 0, 1, 4); ++ ++ if (dsi_lanes < 0) { ++ dev_err(dev, "%pOF: no or too many data-lanes defined", np); ++ return dsi_lanes; ++ } ++ ++ desc_dsi->lanes = dsi_lanes; ++ ++ of_property_read_string(np, "dsi-color-format", &dsi_color_format); ++ if (!strcmp(dsi_color_format, "RGB888")) { ++ desc_dsi->format = MIPI_DSI_FMT_RGB888; ++ desc->bpc = 8; ++ } else if (!strcmp(dsi_color_format, "RGB565")) { ++ desc_dsi->format = MIPI_DSI_FMT_RGB565; ++ desc->bpc = 6; ++ } else if (!strcmp(dsi_color_format, "RGB666")) { ++ desc_dsi->format = MIPI_DSI_FMT_RGB666; ++ desc->bpc = 6; ++ } else if (!strcmp(dsi_color_format, "RGB666_PACKED")) { ++ desc_dsi->format = MIPI_DSI_FMT_RGB666_PACKED; ++ desc->bpc = 6; ++ } else { ++ dev_err(dev, "%pOF: no valid dsi-color-format defined", np); ++ return -EINVAL; ++ } ++ ++ ++ of_property_for_each_string(np, "mode", prop, dsi_mode_flags) { ++ if (!strcmp(dsi_mode_flags, "MODE_VIDEO")) ++ desc_dsi->flags |= MIPI_DSI_MODE_VIDEO; ++ else if (!strcmp(dsi_mode_flags, "MODE_VIDEO_BURST")) ++ desc_dsi->flags |= MIPI_DSI_MODE_VIDEO_BURST; ++ else if (!strcmp(dsi_mode_flags, "MODE_VIDEO_SYNC_PULSE")) ++ desc_dsi->flags |= MIPI_DSI_MODE_VIDEO_SYNC_PULSE; ++ else if (!strcmp(dsi_mode_flags, "MODE_VIDEO_AUTO_VERT")) ++ desc_dsi->flags |= MIPI_DSI_MODE_VIDEO_AUTO_VERT; ++ else if (!strcmp(dsi_mode_flags, "MODE_VIDEO_HSE")) ++ desc_dsi->flags |= MIPI_DSI_MODE_VIDEO_HSE; ++ else if (!strcmp(dsi_mode_flags, "MODE_VIDEO_NO_HFP")) ++ desc_dsi->flags |= MIPI_DSI_MODE_VIDEO_NO_HFP; ++ else if (!strcmp(dsi_mode_flags, "MODE_VIDEO_NO_HBP")) ++ desc_dsi->flags |= MIPI_DSI_MODE_VIDEO_NO_HBP; ++ else if (!strcmp(dsi_mode_flags, "MODE_VIDEO_NO_HSA")) ++ desc_dsi->flags |= MIPI_DSI_MODE_VIDEO_NO_HSA; ++ else if (!strcmp(dsi_mode_flags, "MODE_VSYNC_FLUSH")) ++ desc_dsi->flags |= MIPI_DSI_MODE_VSYNC_FLUSH; ++ else if (!strcmp(dsi_mode_flags, "MODE_NO_EOT_PACKET")) ++ desc_dsi->flags |= MIPI_DSI_MODE_NO_EOT_PACKET; ++ else if (!strcmp(dsi_mode_flags, "CLOCK_NON_CONTINUOUS")) ++ desc_dsi->flags |= MIPI_DSI_CLOCK_NON_CONTINUOUS; ++ else if (!strcmp(dsi_mode_flags, "MODE_LPM")) ++ desc_dsi->flags |= MIPI_DSI_MODE_LPM; ++ else if (!strcmp(dsi_mode_flags, "HS_PKT_END_ALIGNED")) ++ desc_dsi->flags |= MIPI_DSI_HS_PKT_END_ALIGNED; ++ } ++ ++ desc->connector_type = DRM_MODE_CONNECTOR_DSI; ++ desc_dsi->desc = *desc; ++ ++ return 0; ++} ++ + static int panel_simple_dsi_probe(struct mipi_dsi_device *dsi) + { + const struct panel_desc_dsi *desc; ++ struct panel_desc_dsi *dt_desc; + const struct of_device_id *id; + int err; + +@@ -4698,7 +4806,20 @@ static int panel_simple_dsi_probe(struct + if (!id) + return -ENODEV; + +- desc = id->data; ++ if (id->data == &panel_dsi) { ++ /* Handle the generic panel-dsi binding */ ++ dt_desc = devm_kzalloc(&dsi->dev, sizeof(*dt_desc), GFP_KERNEL); ++ if (!dt_desc) ++ return -ENOMEM; ++ ++ err = panel_dsi_dt_probe(&dsi->dev, dt_desc); ++ if (err < 0) ++ return err; ++ ++ desc = dt_desc; ++ } else { ++ desc = id->data; ++ } + + err = panel_simple_probe(&dsi->dev, &desc->desc); + if (err < 0) |