diff options
Diffstat (limited to 'linux-core/drm_crtc.c')
| -rw-r--r-- | linux-core/drm_crtc.c | 54 |
1 files changed, 52 insertions, 2 deletions
diff --git a/linux-core/drm_crtc.c b/linux-core/drm_crtc.c index e1b37c0b..ac2f1d42 100644 --- a/linux-core/drm_crtc.c +++ b/linux-core/drm_crtc.c @@ -382,6 +382,7 @@ void drm_crtc_probe_output_modes(struct drm_device *dev, int maxX, int maxY) drm_crtc_probe_single_output_modes(output, maxX, maxY); } } +EXPORT_SYMBOL(drm_crtc_probe_output_modes); /** * drm_crtc_set_mode - set a mode @@ -539,7 +540,8 @@ void drm_disable_unused_functions(struct drm_device *dev) crtc->funcs->dpms(crtc, DPMSModeOff); } } - +EXPORT_SYMBOL(drm_disable_unused_functions); + /** * drm_mode_probed_add - add a mode to the specified output's probed mode list * @output: output the new mode @@ -936,7 +938,7 @@ clone: } } } - +EXPORT_SYMBOL(drm_pick_crtcs); /** * drm_initial_config - setup a sane initial output configuration @@ -1123,6 +1125,54 @@ int drm_crtc_set_config(struct drm_crtc *crtc, struct drm_mode_crtc *crtc_info, } /** + * drm_hotplug_stage_two + * @dev DRM device + * @output hotpluged output + * + * LOCKING. + * Caller must hold mode config lock, function might grap struct lock. + * + * Stage two of a hotplug. + * + * RETURNS: + * Zero on success, errno on failure. + */ +int drm_hotplug_stage_two(struct drm_device *dev, struct drm_output *output) +{ + int has_config = 0; + + if (output->crtc && output->crtc->desired_mode) { + DRM_DEBUG("drm thinks that output already has a config\n"); + has_config = 1; + } + + drm_crtc_probe_output_modes(dev, 2048, 2048); + + if (!has_config) + drm_pick_crtcs(dev); + + if (!output->crtc || !output->crtc->desired_mode) { + DRM_DEBUG("could not find a desired mode or crtc for output\n"); + return 1; + } + + /* We should realy check if there is a fb using this crtc */ + if (!has_config) + dev->driver->fb_probe(dev, output->crtc); + else { + dev->driver->fb_resize(dev, output->crtc); + + if (!drm_crtc_set_mode(output->crtc, output->crtc->desired_mode, 0, 0)) + DRM_ERROR("failed to set mode after hotplug\n"); + } + + drm_disable_unused_functions(dev); + + return 0; +} +EXPORT_SYMBOL(drm_hotplug_stage_two); + +/** * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo * @out: drm_mode_modeinfo struct to return to the user * @in: drm_display_mode to use |