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Subject[PATCH 1/3] drm/ingenic: Add support for 30-bit modes
Date
Starting from the JZ4760 SoC, the primary and overlay planes support
30-bit pixel modes (10 bits per color component). Add support for these
in the ingenic-drm driver.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 41 +++++++++++++++++------
drivers/gpu/drm/ingenic/ingenic-drm.h | 1 +
2 files changed, 32 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index 937d080f5d06..fb62869befdc 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -49,6 +49,8 @@ struct jz_soc_info {
bool needs_dev_clk;
bool has_osd;
unsigned int max_width, max_height;
+ const u32 *formats;
+ unsigned int num_formats;
};

struct ingenic_drm {
@@ -73,12 +75,6 @@ struct ingenic_drm {
bool no_vblank;
};

-static const u32 ingenic_drm_primary_formats[] = {
- DRM_FORMAT_XRGB1555,
- DRM_FORMAT_RGB565,
- DRM_FORMAT_XRGB8888,
-};
-
static bool ingenic_drm_cached_gem_buf;
module_param_named(cached_gem_buffers, ingenic_drm_cached_gem_buf, bool, 0400);
MODULE_PARM_DESC(cached_gem_buffers,
@@ -411,6 +407,9 @@ void ingenic_drm_plane_config(struct device *dev,
case DRM_FORMAT_XRGB8888:
ctrl |= JZ_LCD_OSDCTRL_BPP_18_24;
break;
+ case DRM_FORMAT_XRGB2101010:
+ ctrl |= JZ_LCD_OSDCTRL_BPP_30;
+ break;
}

regmap_update_bits(priv->map, JZ_REG_LCD_OSDCTRL,
@@ -426,6 +425,9 @@ void ingenic_drm_plane_config(struct device *dev,
case DRM_FORMAT_XRGB8888:
ctrl |= JZ_LCD_CTRL_BPP_18_24;
break;
+ case DRM_FORMAT_XRGB2101010:
+ ctrl |= JZ_LCD_CTRL_BPP_30;
+ break;
}

regmap_update_bits(priv->map, JZ_REG_LCD_CTRL,
@@ -894,8 +896,8 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)

ret = drm_universal_plane_init(drm, &priv->f1, 1,
&ingenic_drm_primary_plane_funcs,
- ingenic_drm_primary_formats,
- ARRAY_SIZE(ingenic_drm_primary_formats),
+ priv->soc_info->formats,
+ priv->soc_info->num_formats,
NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
if (ret) {
dev_err(dev, "Failed to register plane: %i\n", ret);
@@ -919,8 +921,8 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)

ret = drm_universal_plane_init(drm, &priv->f0, 1,
&ingenic_drm_primary_plane_funcs,
- ingenic_drm_primary_formats,
- ARRAY_SIZE(ingenic_drm_primary_formats),
+ priv->soc_info->formats,
+ priv->soc_info->num_formats,
NULL, DRM_PLANE_TYPE_OVERLAY,
NULL);
if (ret) {
@@ -1121,11 +1123,26 @@ static int ingenic_drm_remove(struct platform_device *pdev)
return 0;
}

+static const u32 jz4740_formats[] = {
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_XRGB8888,
+};
+
+static const u32 jz4770_formats[] = {
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_XRGB2101010,
+};
+
static const struct jz_soc_info jz4740_soc_info = {
.needs_dev_clk = true,
.has_osd = false,
.max_width = 800,
.max_height = 600,
+ .formats = jz4740_formats,
+ .num_formats = ARRAY_SIZE(jz4740_formats),
};

static const struct jz_soc_info jz4725b_soc_info = {
@@ -1133,6 +1150,8 @@ static const struct jz_soc_info jz4725b_soc_info = {
.has_osd = true,
.max_width = 800,
.max_height = 600,
+ .formats = jz4740_formats,
+ .num_formats = ARRAY_SIZE(jz4740_formats),
};

static const struct jz_soc_info jz4770_soc_info = {
@@ -1140,6 +1159,8 @@ static const struct jz_soc_info jz4770_soc_info = {
.has_osd = true,
.max_width = 1280,
.max_height = 720,
+ .formats = jz4770_formats,
+ .num_formats = ARRAY_SIZE(jz4770_formats),
};

static const struct of_device_id ingenic_drm_of_match[] = {
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.h b/drivers/gpu/drm/ingenic/ingenic-drm.h
index df99f0f75d39..f05e18e6b6fa 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm.h
+++ b/drivers/gpu/drm/ingenic/ingenic-drm.h
@@ -124,6 +124,7 @@
#define JZ_LCD_CTRL_BPP_8 0x3
#define JZ_LCD_CTRL_BPP_15_16 0x4
#define JZ_LCD_CTRL_BPP_18_24 0x5
+#define JZ_LCD_CTRL_BPP_30 0x7
#define JZ_LCD_CTRL_BPP_MASK (JZ_LCD_CTRL_RGB555 | 0x7)

#define JZ_LCD_CMD_SOF_IRQ BIT(31)
--
2.28.0
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