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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-12-04 09:45:46 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-12-08 16:07:52 +0100 |
| commit | 2be94971c759da872efce99fa823ea17cdb7cc8b (patch) | |
| tree | 65a4dff301386b3d5610d5b0409aee7d5df832fe /drivers/gpu/drm/drm_probe_helper.c | |
| parent | 4490d4c7111e1ebf748ea2c3e1e64d103d73bae7 (diff) | |
| download | linux-0-day-2be94971c759da872efce99fa823ea17cdb7cc8b.tar.gz linux-0-day-2be94971c759da872efce99fa823ea17cdb7cc8b.tar.xz | |
drm: Merge helper docbook into kerneldoc comments
Duplication is bad, luckily both help texts highlighted different
issues so the kerneldoc gained quite a bit!
While at it also sprinkle more references to the vtable structs around
and make it clear that legacy CRTC helpers are deprecated and which
functions to use instead.
v2: Spelling fixes and polish (Thierry).
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449218769-16577-6-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/drm_probe_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_probe_helper.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index b59acad83644e..d65def42f4b59 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -273,15 +273,28 @@ prune: * @maxX: max width for modes * @maxY: max height for modes * - * Based on the helper callbacks implemented by @connector try to detect all - * valid modes. Modes will first be added to the connector's probed_modes list, - * then culled (based on validity and the @maxX, @maxY parameters) and put into - * the normal modes list. + * Based on the helper callbacks implemented by @connector in struct + * &drm_connector_helper_funcs try to detect all valid modes. Modes will first + * be added to the connector's probed_modes list, then culled (based on validity + * and the @maxX, @maxY parameters) and put into the normal modes list. * - * Intended to be use as a generic implementation of the ->fill_modes() - * @connector vfunc for drivers that use the crtc helpers for output mode + * Intended to be used as a generic implementation of the ->fill_modes() + * @connector vfunc for drivers that use the CRTC helpers for output mode * filtering and detection. * + * If the helper operation returns no mode, and if the connector status is + * connector_status_connected, standard VESA DMT modes up to 1024x768 are + * automatically added to the modes list by a call to + * drm_add_modes_noedid(). + * + * The function then filters out modes larger than @maxX and maxY if specified. + * It finally calls the optional connector ->mode_valid() helper operation for each + * mode in the probed list to check whether the mode is valid for the connector. + * + * Compared to drm_helper_probe_single_connector_modes_nomerge() this function + * merged the mode bits for the preferred mode, as a hack to work around some + * quirky issues on funky hardware. + * * Returns: * The number of modes found on @connector. */ @@ -298,8 +311,11 @@ EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); * @maxX: max width for modes * @maxY: max height for modes * - * This operates like drm_hehlper_probe_single_connector_modes except it + * This operates like drm_hehlper_probe_single_connector_modes() except it * replaces the mode bits instead of merging them for preferred modes. + * + * Returns: + * The number of modes found on @connector. */ int drm_helper_probe_single_connector_modes_nomerge(struct drm_connector *connector, uint32_t maxX, uint32_t maxY) |