From: Paul Boddie <paul@xxxxxxxxxxxxx>
The jz4780 has some features which need initialization
according to the vendor kernel.
Signed-off-by: Paul Boddie <paul@xxxxxxxxxxxxx>
Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
---
drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 39 +++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index 33ce3794aa126..f3b1b10bc079b 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -69,6 +69,10 @@ struct jz_soc_info {
bool needs_dev_clk;
bool has_osd;
bool map_noncoherent;
+ bool has_alpha;
+ bool has_pcfg;
+ bool has_recover;
+ bool has_rgbc;
bool use_extended_hwdesc;
unsigned int hwdesc_size;
unsigned int max_width, max_height;
@@ -671,6 +675,9 @@ static void ingenic_drm_encoder_atomic_mode_set(struct drm_encoder *encoder,
| JZ_LCD_CFG_SPL_DISABLE | JZ_LCD_CFG_REV_DISABLE;
}
+ if (priv->soc_info->has_recover)
+ cfg |= JZ_LCD_CFG_RECOVER_FIFO_UNDERRUN;
+
/* set use of the 8-word descriptor and OSD foreground usage. */
if (priv->soc_info->use_extended_hwdesc)
cfg |= JZ_LCD_CFG_DESCRIPTOR_8;
@@ -1208,6 +1215,25 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
if (soc_info->has_osd)
regmap_set_bits(priv->map, JZ_REG_LCD_OSDC, JZ_LCD_OSDC_OSDEN);
+ if (soc_info->has_alpha)
+ regmap_set_bits(priv->map, JZ_REG_LCD_OSDC, JZ_LCD_OSDC_ALPHAEN);
+
+ /* Magic values from the vendor kernel for the priority thresholds. */
+ if (soc_info->has_pcfg)
+ regmap_write(priv->map, JZ_REG_LCD_PCFG,
+ JZ_LCD_PCFG_PRI_MODE |
+ JZ_LCD_PCFG_HP_BST_16 |
+ (511 << JZ_LCD_PCFG_THRESHOLD2_OFFSET) |
+ (400 << JZ_LCD_PCFG_THRESHOLD1_OFFSET) |
+ (256 << JZ_LCD_PCFG_THRESHOLD0_OFFSET));
+
+ /* RGB output control may be superfluous. */
+ if (soc_info->has_rgbc)
+ regmap_write(priv->map, JZ_REG_LCD_RGBC,
+ JZ_LCD_RGBC_RGB_FORMAT_ENABLE |
+ JZ_LCD_RGBC_ODD_RGB |
+ JZ_LCD_RGBC_EVEN_RGB);
+
mutex_init(&priv->clk_mutex);
priv->clock_nb.notifier_call = ingenic_drm_update_pixclk;
@@ -1355,6 +1381,9 @@ static const struct jz_soc_info jz4740_soc_info = {
.needs_dev_clk = true,
.has_osd = false,
.map_noncoherent = false,
+ .has_pcfg = false,
+ .has_recover = false,
+ .has_rgbc = false,
.hwdesc_size = sizeof(struct ingenic_dma_hwdesc),
.max_width = 800,
.max_height = 600,
@@ -1368,6 +1397,9 @@ static const struct jz_soc_info jz4725b_soc_info = {
.needs_dev_clk = false,
.has_osd = true,
.map_noncoherent = false,
+ .has_pcfg = false,
+ .has_recover = false,
+ .has_rgbc = false,
.hwdesc_size = sizeof(struct ingenic_dma_hwdesc),
.max_width = 800,
.max_height = 600,
@@ -1382,6 +1414,9 @@ static const struct jz_soc_info jz4770_soc_info = {
.needs_dev_clk = false,
.has_osd = true,
.map_noncoherent = true,
+ .has_pcfg = false,
+ .has_recover = false,
+ .has_rgbc = false,
.hwdesc_size = sizeof(struct ingenic_dma_hwdesc),
.max_width = 1280,
.max_height = 720,
@@ -1395,6 +1430,10 @@ static const struct jz_soc_info jz4770_soc_info = {
static const struct jz_soc_info jz4780_soc_info = {
.needs_dev_clk = true,
.has_osd = true,
+ .has_alpha = true,
+ .has_pcfg = true,
+ .has_recover = true,
+ .has_rgbc = true,
.use_extended_hwdesc = true,
.hwdesc_size = sizeof(struct ingenic_dma_hwdesc_ext),
.max_width = 4096,
--
2.31.1
