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path: root/drivers/gpu/drm/tilcdc/tilcdc_drv.c
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Diffstat (limited to 'drivers/gpu/drm/tilcdc/tilcdc_drv.c')
-rw-r--r--drivers/gpu/drm/tilcdc/tilcdc_drv.c37
1 files changed, 35 insertions, 2 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 2b5461bcd9fb..40b71da5a214 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -26,6 +26,7 @@
#include "drm_fb_helper.h"
static LIST_HEAD(module_list);
+static bool slave_probing;
void tilcdc_module_init(struct tilcdc_module *mod, const char *name,
const struct tilcdc_module_ops *funcs)
@@ -41,6 +42,11 @@ void tilcdc_module_cleanup(struct tilcdc_module *mod)
list_del(&mod->list);
}
+void tilcdc_slave_probedefer(bool defered)
+{
+ slave_probing = defered;
+}
+
static struct of_device_id tilcdc_of_match[];
static struct drm_framebuffer *tilcdc_fb_create(struct drm_device *dev,
@@ -157,7 +163,9 @@ 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);
@@ -210,7 +218,20 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
#endif
if (of_property_read_u32(node, "max-bandwidth", &priv->max_bandwidth))
- priv->max_bandwidth = 1280 * 1024 * 60;
+ priv->max_bandwidth = TILCDC_DEFAULT_MAX_BANDWIDTH;
+
+ DBG("Maximum Bandwidth Value %d", priv->max_bandwidth);
+
+ if (of_property_read_u32(node, "ti,max-width", &priv->max_width))
+ priv->max_width = TILCDC_DEFAULT_MAX_WIDTH;
+
+ DBG("Maximum Horizontal Pixel Width Value %dpixels", priv->max_width);
+
+ if (of_property_read_u32(node, "ti,max-pixelclock",
+ &priv->max_pixelclock))
+ priv->max_pixelclock = TILCDC_DEFAULT_MAX_PIXELCLOCK;
+
+ DBG("Maximum Pixel Clock Value %dKHz", priv->max_pixelclock);
pm_runtime_enable(dev->dev);
@@ -256,7 +277,15 @@ 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);
@@ -557,6 +586,10 @@ static int tilcdc_pdev_probe(struct platform_device *pdev)
return -ENXIO;
}
+ /* defer probing if slave is in deferred probing */
+ if (slave_probing == true)
+ return -EPROBE_DEFER;
+
return drm_platform_init(&tilcdc_driver, pdev);
}