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drm: Introduce generic probe function for component based masters.

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A lot of component based DRM drivers use a variant of the same code
as the probe function. They bind the crtc ports in the first iteration
and then scan through the child nodes and bind the encoders attached
to the remote endpoints. Factor the common code into a separate
function called drm_of_component_probe() in order to increase code
reuse.

Cc: David Airlie <[email protected]>
Signed-off-by: Liviu Dudau <[email protected]>
Acked-by: Russell King <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
Acked-by: Eric Anholt <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
This commit is contained in:
Liviu Dudau 2015-10-20 10:23:12 +01:00 • committed by Daniel Vetter
commit df785aa87f
2 changed files with 101 additions and 0 deletions
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13
include/drm/drm_of.h
View file

@ -1,18 +1,31 @@
#ifndef __DRM_OF_H__
#define __DRM_OF_H__
struct component_master_ops;
struct device;
struct drm_device;
struct device_node;
#ifdef CONFIG_OF
extern uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
struct device_node *port);
extern int drm_of_component_probe(struct device *dev,
int (*compare_of)(struct device *, void *),
const struct component_master_ops *m_ops);
#else
static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
struct device_node *port)
{
return 0;
}
static inline int
drm_of_component_probe(struct device *dev,
int (*compare_of)(struct device *, void *),
const struct component_master_ops *m_ops)
{
return -EINVAL;
}
#endif
#endif /* __DRM_OF_H__ */