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drm: Share plane pixel format check code between legacy and atomic

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Both the legacy and atomic helpers need to check whether a plane
supports a given pixel format. The code is currently duplicated, share
it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[danvet: Slightly extend the docbook.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Laurent Pinchart 2015-03-05 02:25:43 +02:00 committed by Daniel Vetter
parent 2a97acd637
commit ead8610d42
3 changed files with 29 additions and 12 deletions
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10
drivers/gpu/drm/drm_atomic.c
View File

@ -475,7 +475,7 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
unsigned int fb_width, fb_height;
unsigned int i;
int ret;
/* either *both* CRTC and FB must be set, or neither */
if (WARN_ON(state->crtc && !state->fb)) {
@ -497,13 +497,11 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
}
/* Check whether this plane supports the fb pixel format. */
for (i = 0; i < plane->format_count; i++)
if (state->fb->pixel_format == plane->format_types[i])
break;
if (i == plane->format_count) {
ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format);
if (ret) {
DRM_DEBUG_ATOMIC("Invalid pixel format %s\n",
drm_get_format_name(state->fb->pixel_format));
return -EINVAL;
return ret;
}
/* Give drivers some help against integer overflows */

29
drivers/gpu/drm/drm_crtc.c
View File

@ -2408,6 +2408,27 @@ int drm_mode_getplane(struct drm_device *dev, void *data,
return 0;
}
/**
* drm_plane_check_pixel_format - Check if the plane supports the pixel format
* @plane: plane to check for format support
* @format: the pixel format
*
* Returns:
* Zero of @plane has @format in its list of supported pixel formats, -EINVAL
* otherwise.
*/
int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
{
unsigned int i;
for (i = 0; i < plane->format_count; i++) {
if (format == plane->format_types[i])
return 0;
}
return -EINVAL;
}
/*
* setplane_internal - setplane handler for internal callers
*
@ -2428,7 +2449,6 @@ static int __setplane_internal(struct drm_plane *plane,
{
int ret = 0;
unsigned int fb_width, fb_height;
unsigned int i;
/* No fb means shut it down */
if (!fb) {
@ -2451,13 +2471,10 @@ static int __setplane_internal(struct drm_plane *plane,
}
/* Check whether this plane supports the fb pixel format. */
for (i = 0; i < plane->format_count; i++)
if (fb->pixel_format == plane->format_types[i])
break;
if (i == plane->format_count) {
ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
if (ret) {
DRM_DEBUG_KMS("Invalid pixel format %s\n",
drm_get_format_name(fb->pixel_format));
ret = -EINVAL;
goto out;
}

2
include/drm/drm_crtc.h
View File

@ -1263,6 +1263,8 @@ extern int drm_plane_init(struct drm_device *dev,
extern void drm_plane_cleanup(struct drm_plane *plane);
extern unsigned int drm_plane_index(struct drm_plane *plane);
extern void drm_plane_force_disable(struct drm_plane *plane);
extern int drm_plane_check_pixel_format(const struct drm_plane *plane,
u32 format);
extern void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
int *hdisplay, int *vdisplay);
extern int drm_crtc_check_viewport(const struct drm_crtc *crtc,