The preferred_bpp value in currently hard-coded to 16. This causes color corruption on the am335x-evm lcd panel which requires 32 bpp instead. This changes attempts to use the configured bpp value from the DT or built-in panel-info struct.
Signed-off-by: Benoit Parrot bparrot@ti.com --- drivers/gpu/drm/tilcdc/tilcdc_drv.c | 12 +++++++++++- drivers/gpu/drm/tilcdc/tilcdc_drv.h | 1 + drivers/gpu/drm/tilcdc/tilcdc_panel.c | 2 ++ drivers/gpu/drm/tilcdc/tilcdc_slave.c | 2 ++ drivers/gpu/drm/tilcdc/tilcdc_tfp410.c | 2 ++ 5 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c index 2b5461b..f2a6528 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c @@ -157,7 +157,9 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags) struct platform_device *pdev = dev->platformdev; struct device_node *node = pdev->dev.of_node; struct tilcdc_drm_private *priv; + struct tilcdc_module *mod; struct resource *res; + u32 bpp = 0; int ret;
priv = kzalloc(sizeof(*priv), GFP_KERNEL); @@ -256,7 +258,15 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
platform_set_drvdata(pdev, dev);
- priv->fbdev = drm_fbdev_cma_init(dev, 16, + + list_for_each_entry(mod, &module_list, list) { + DBG("%s: preferred_bpp: %d", mod->name, mod->preferred_bpp); + bpp = mod->preferred_bpp; + if (bpp > 0) + break; + } + + priv->fbdev = drm_fbdev_cma_init(dev, bpp, dev->mode_config.num_crtc, dev->mode_config.num_connector);
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.h b/drivers/gpu/drm/tilcdc/tilcdc_drv.h index 8242b5a..0906843 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.h +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.h @@ -89,6 +89,7 @@ struct tilcdc_module { const char *name; struct list_head list; const struct tilcdc_module_ops *funcs; + unsigned int preferred_bpp; };
void tilcdc_module_init(struct tilcdc_module *mod, const char *name, diff --git a/drivers/gpu/drm/tilcdc/tilcdc_panel.c b/drivers/gpu/drm/tilcdc/tilcdc_panel.c index 0917665..86c6732 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_panel.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_panel.c @@ -393,6 +393,8 @@ static int panel_probe(struct platform_device *pdev) goto fail; }
+ mod->preferred_bpp = panel_mod->info->bpp; + panel_mod->backlight = of_find_backlight_by_node(node); if (panel_mod->backlight) dev_info(&pdev->dev, "found backlight\n"); diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave.c b/drivers/gpu/drm/tilcdc/tilcdc_slave.c index db1d2fc..8bf4fd1 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_slave.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_slave.c @@ -323,6 +323,8 @@ static int slave_probe(struct platform_device *pdev) goto fail; }
+ mod->preferred_bpp = slave_info.bpp; + i2c_node = of_find_node_by_phandle(i2c_phandle); if (!i2c_node) { dev_err(&pdev->dev, "could not get i2c bus node\n"); diff --git a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c index a36788f..925c7cd 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c @@ -354,6 +354,8 @@ static int tfp410_probe(struct platform_device *pdev) goto fail; }
+ mod->preferred_bpp = dvi_info.bpp; + i2c_node = of_find_node_by_phandle(i2c_phandle); if (!i2c_node) { dev_err(&pdev->dev, "could not get i2c bus node\n");