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drm/tilcdc: Initialize crtc->port 

Initialize port device node pointer in the tilcdc crtc. Fixes "Falling
back to first CRTC" warning from tda998x driver.

The tda998x encoder driver calls drm_of_find_possible_crtcs() to
initialize possible_crtcs of struct drm_encoder. The crtc->port needs
to be initialized for drm_of_find_possible_crtcs() to work.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Jyri Sarha 2015-05-27 11:58:37 +03:00
parent 5895d08f6f
commit d66284fba1
1 changed files with 20 additions and 0 deletions
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20
drivers/gpu/drm/tilcdc/tilcdc_crtc.c
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@ -124,6 +124,7 @@ static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
of_node_put(crtc->port);
drm_crtc_cleanup(crtc);
drm_flip_work_cleanup(&tilcdc_crtc->unref_work);
@ -749,6 +750,7 @@ irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc)
struct drm_crtc *tilcdc_crtc_create(struct drm_device *dev)
{
struct tilcdc_drm_private *priv = dev->dev_private;
struct tilcdc_crtc *tilcdc_crtc;
struct drm_crtc *crtc;
int ret;
@ -775,6 +777,24 @@ struct drm_crtc *tilcdc_crtc_create(struct drm_device *dev)
drm_crtc_helper_add(crtc, &tilcdc_crtc_helper_funcs);
if (priv->is_componentized) {
struct device_node *ports =
of_get_child_by_name(dev->dev->of_node, "ports");
if (ports) {
crtc->port = of_get_child_by_name(ports, "port");
of_node_put(ports);
} else {
crtc->port =
of_get_child_by_name(dev->dev->of_node, "port");
}
if (!crtc->port) { /* This should never happen */
dev_err(dev->dev, "Port node not found in %s\n",
dev->dev->of_node->full_name);
goto fail;
}
}
return crtc;
fail: