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rk3326: add elida display modes

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This commit is contained in:
sydarn 2024-03-27 13:46:35 +01:00
parent 1a525fd3c7
commit 3c584117e5
1 changed files with 79 additions and 0 deletions
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79
projects/Rockchip/patches/linux/RK3326/020-elida-refresh-rates.patch Normal file
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@ -0,0 +1,79 @@
diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
index ad7628053e1b..0be014aa7292 100644
--- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
+++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
@@ -177,8 +177,9 @@ static int kd35t133_prepare(struct drm_panel *panel)
return ret;
}
-static const struct drm_display_mode default_mode = {
- .hdisplay = 320,
+/* drm_display_mode template without clock as it is variable */
+static const struct drm_display_mode mode_template = {
+ .hdisplay = 320,
.hsync_start = 320 + 130,
.hsync_end = 320 + 130 + 4,
.htotal = 320 + 130 + 4 + 130,
@@ -186,31 +187,49 @@ static const struct drm_display_mode default_mode = {
.vsync_start = 480 + 2,
.vsync_end = 480 + 2 + 1,
.vtotal = 480 + 2 + 1 + 2,
- .clock = 17000,
.width_mm = 42,
.height_mm = 82,
};
+static const int pixel_clocks[] = {
+ 14118, /* 49.84 Hz PAL everything */
+ 15545, /* 54.88 Hz Arcade: Midway, Toaplan, R-Type */
+ 16286, /* 57.50 Hz Arcade: Toaplan, more? */
+ 16917, /* 59.73 Hz GB/GBC/GBA */
+ 16976, /* 59.935 Hz NTSC MS/MD/GG/PS */
+ 17022, /* 60.01 Hz NTSC NES/SNES */
+ 21375, /* 75.47 Hz Wonderswan(Color) */
+};
+
static int kd35t133_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct kd35t133 *ctx = panel_to_kd35t133(panel);
+ struct drm_display_mode mode_tmp;
struct drm_display_mode *mode;
-
- mode = drm_mode_duplicate(connector->dev, &default_mode);
- if (!mode) {
- dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
- default_mode.hdisplay, default_mode.vdisplay,
- drm_mode_vrefresh(&default_mode));
- return -ENOMEM;
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(pixel_clocks); i++) {
+ mode_tmp = mode_template;
+ mode_tmp.clock = pixel_clocks[i];
+ mode = drm_mode_duplicate(connector->dev, &mode_tmp);
+ if (!mode) {
+ dev_err(ctx->dev, "Failed to add mode %u\n",
+ drm_mode_vrefresh(mode));
+ return -ENOMEM;
+ }
+ drm_mode_set_name(mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER;
+ if (pixel_clocks[i] == pixel_clocks[4])
+ mode->type |= DRM_MODE_TYPE_PREFERRED;
+
+ drm_mode_probed_add(connector, mode);
+ connector->display_info.width_mm = mode->width_mm;
+ connector->display_info.height_mm = mode->height_mm;
}
- drm_mode_set_name(mode);
- mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
- connector->display_info.width_mm = mode->width_mm;
- connector->display_info.height_mm = mode->height_mm;
- drm_mode_probed_add(connector, mode);
/*
* TODO: Remove once all drm drivers call
* drm_connector_set_orientation_from_panel()