diff options
Diffstat (limited to 'drivers/gpu/drm/drm_crtc_helper.c')
-rw-r--r-- | drivers/gpu/drm/drm_crtc_helper.c | 391 |
1 files changed, 1 insertions, 390 deletions
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index 51103aa469f..9d23f54673d 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -55,7 +55,7 @@ static void drm_mode_validate_flag(struct drm_connector *connector, } /** - * drm_helper_probe_connector_modes - get complete set of display modes + * drm_helper_probe_single_connector_modes - get complete set of display modes * @dev: DRM device * @maxX: max width for modes * @maxY: max height for modes @@ -154,21 +154,6 @@ prune: } EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); -int drm_helper_probe_connector_modes(struct drm_device *dev, uint32_t maxX, - uint32_t maxY) -{ - struct drm_connector *connector; - int count = 0; - - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - count += drm_helper_probe_single_connector_modes(connector, - maxX, maxY); - } - - return count; -} -EXPORT_SYMBOL(drm_helper_probe_connector_modes); - /** * drm_helper_encoder_in_use - check if a given encoder is in use * @encoder: encoder to check @@ -263,302 +248,6 @@ void drm_helper_disable_unused_functions(struct drm_device *dev) } EXPORT_SYMBOL(drm_helper_disable_unused_functions); -static struct drm_display_mode *drm_has_preferred_mode(struct drm_connector *connector, int width, int height) -{ - struct drm_display_mode *mode; - - list_for_each_entry(mode, &connector->modes, head) { - if (drm_mode_width(mode) > width || - drm_mode_height(mode) > height) - continue; - if (mode->type & DRM_MODE_TYPE_PREFERRED) - return mode; - } - return NULL; -} - -static bool drm_has_cmdline_mode(struct drm_connector *connector) -{ - struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; - struct drm_fb_helper_cmdline_mode *cmdline_mode; - - if (!fb_help_conn) - return false; - - cmdline_mode = &fb_help_conn->cmdline_mode; - return cmdline_mode->specified; -} - -static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_connector *connector, int width, int height) -{ - struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; - struct drm_fb_helper_cmdline_mode *cmdline_mode; - struct drm_display_mode *mode = NULL; - - if (!fb_help_conn) - return mode; - - cmdline_mode = &fb_help_conn->cmdline_mode; - if (cmdline_mode->specified == false) - return mode; - - /* attempt to find a matching mode in the list of modes - * we have gotten so far, if not add a CVT mode that conforms - */ - if (cmdline_mode->rb || cmdline_mode->margins) - goto create_mode; - - list_for_each_entry(mode, &connector->modes, head) { - /* check width/height */ - if (mode->hdisplay != cmdline_mode->xres || - mode->vdisplay != cmdline_mode->yres) - continue; - - if (cmdline_mode->refresh_specified) { - if (mode->vrefresh != cmdline_mode->refresh) - continue; - } - - if (cmdline_mode->interlace) { - if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) - continue; - } - return mode; - } - -create_mode: - mode = drm_cvt_mode(connector->dev, cmdline_mode->xres, - cmdline_mode->yres, - cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, - cmdline_mode->rb, cmdline_mode->interlace, - cmdline_mode->margins); - drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); - list_add(&mode->head, &connector->modes); - return mode; -} - -static bool drm_connector_enabled(struct drm_connector *connector, bool strict) -{ - bool enable; - - if (strict) { - enable = connector->status == connector_status_connected; - } else { - enable = connector->status != connector_status_disconnected; - } - return enable; -} - -static void drm_enable_connectors(struct drm_device *dev, bool *enabled) -{ - bool any_enabled = false; - struct drm_connector *connector; - int i = 0; - - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - enabled[i] = drm_connector_enabled(connector, true); - DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, - enabled[i] ? "yes" : "no"); - any_enabled |= enabled[i]; - i++; - } - - if (any_enabled) - return; - - i = 0; - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - enabled[i] = drm_connector_enabled(connector, false); - i++; - } -} - -static bool drm_target_preferred(struct drm_device *dev, - struct drm_display_mode **modes, - bool *enabled, int width, int height) -{ - struct drm_connector *connector; - int i = 0; - - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - - if (enabled[i] == false) { - i++; - continue; - } - - DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", - connector->base.id); - - /* got for command line mode first */ - modes[i] = drm_pick_cmdline_mode(connector, width, height); - if (!modes[i]) { - DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", - connector->base.id); - modes[i] = drm_has_preferred_mode(connector, width, height); - } - /* No preferred modes, pick one off the list */ - if (!modes[i] && !list_empty(&connector->modes)) { - list_for_each_entry(modes[i], &connector->modes, head) - break; - } - DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : - "none"); - i++; - } - return true; -} - -static int drm_pick_crtcs(struct drm_device *dev, - struct drm_crtc **best_crtcs, - struct drm_display_mode **modes, - int n, int width, int height) -{ - int c, o; - struct drm_connector *connector; - struct drm_connector_helper_funcs *connector_funcs; - struct drm_encoder *encoder; - struct drm_crtc *best_crtc; - int my_score, best_score, score; - struct drm_crtc **crtcs, *crtc; - - if (n == dev->mode_config.num_connector) - return 0; - c = 0; - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - if (c == n) - break; - c++; - } - - best_crtcs[n] = NULL; - best_crtc = NULL; - best_score = drm_pick_crtcs(dev, best_crtcs, modes, n+1, width, height); - if (modes[n] == NULL) - return best_score; - - crtcs = kmalloc(dev->mode_config.num_connector * - sizeof(struct drm_crtc *), GFP_KERNEL); - if (!crtcs) - return best_score; - - my_score = 1; - if (connector->status == connector_status_connected) - my_score++; - if (drm_has_cmdline_mode(connector)) - my_score++; - if (drm_has_preferred_mode(connector, width, height)) - my_score++; - - connector_funcs = connector->helper_private; - encoder = connector_funcs->best_encoder(connector); - if (!encoder) - goto out; - - connector->encoder = encoder; - - /* select a crtc for this connector and then attempt to configure - remaining connectors */ - c = 0; - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - - if ((encoder->possible_crtcs & (1 << c)) == 0) { - c++; - continue; - } - - for (o = 0; o < n; o++) - if (best_crtcs[o] == crtc) - break; - - if (o < n) { - /* ignore cloning for now */ - c++; - continue; - } - - crtcs[n] = crtc; - memcpy(crtcs, best_crtcs, n * sizeof(struct drm_crtc *)); - score = my_score + drm_pick_crtcs(dev, crtcs, modes, n + 1, - width, height); - if (score > best_score) { - best_crtc = crtc; - best_score = score; - memcpy(best_crtcs, crtcs, - dev->mode_config.num_connector * - sizeof(struct drm_crtc *)); - } - c++; - } -out: - kfree(crtcs); - return best_score; -} - -static void drm_setup_crtcs(struct drm_device *dev) -{ - struct drm_crtc **crtcs; - struct drm_display_mode **modes; - struct drm_encoder *encoder; - struct drm_connector *connector; - bool *enabled; - int width, height; - int i, ret; - - DRM_DEBUG_KMS("\n"); - - width = dev->mode_config.max_width; - height = dev->mode_config.max_height; - - /* clean out all the encoder/crtc combos */ - list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { - encoder->crtc = NULL; - } - - crtcs = kcalloc(dev->mode_config.num_connector, - sizeof(struct drm_crtc *), GFP_KERNEL); - modes = kcalloc(dev->mode_config.num_connector, - sizeof(struct drm_display_mode *), GFP_KERNEL); - enabled = kcalloc(dev->mode_config.num_connector, - sizeof(bool), GFP_KERNEL); - - drm_enable_connectors(dev, enabled); - - ret = drm_target_preferred(dev, modes, enabled, width, height); - if (!ret) - DRM_ERROR("Unable to find initial modes\n"); - - DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); - - drm_pick_crtcs(dev, crtcs, modes, 0, width, height); - - i = 0; - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - struct drm_display_mode *mode = modes[i]; - struct drm_crtc *crtc = crtcs[i]; - - if (connector->encoder == NULL) { - i++; - continue; - } - - if (mode && crtc) { - DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", - mode->name, crtc->base.id); - crtc->desired_mode = mode; - connector->encoder->crtc = crtc; - } else { - connector->encoder->crtc = NULL; - connector->encoder = NULL; - } - i++; - } - - kfree(crtcs); - kfree(modes); - kfree(enabled); -} - /** * drm_encoder_crtc_ok - can a given crtc drive a given encoder? * @encoder: encoder to test @@ -984,63 +673,6 @@ fail: } EXPORT_SYMBOL(drm_crtc_helper_set_config); -bool drm_helper_plugged_event(struct drm_device *dev) -{ - DRM_DEBUG_KMS("\n"); - - drm_helper_probe_connector_modes(dev, dev->mode_config.max_width, - dev->mode_config.max_height); - - drm_setup_crtcs(dev); - - /* alert the driver fb layer */ - dev->mode_config.funcs->fb_changed(dev); - - /* FIXME: send hotplug event */ - return true; -} -/** - * drm_initial_config - setup a sane initial connector configuration - * @dev: DRM device - * - * LOCKING: - * Called at init time, must take mode config lock. - * - * Scan the CRTCs and connectors and try to put together an initial setup. - * At the moment, this is a cloned configuration across all heads with - * a new framebuffer object as the backing store. - * - * RETURNS: - * Zero if everything went ok, nonzero otherwise. - */ -bool drm_helper_initial_config(struct drm_device *dev) -{ - int count = 0; - - /* disable all the possible outputs/crtcs before entering KMS mode */ - drm_helper_disable_unused_functions(dev); - - drm_fb_helper_parse_command_line(dev); - - count = drm_helper_probe_connector_modes(dev, - dev->mode_config.max_width, - dev->mode_config.max_height); - - /* - * we shouldn't end up with no modes here. - */ - if (count == 0) - printk(KERN_INFO "No connectors reported connected with modes\n"); - - drm_setup_crtcs(dev); - - /* alert the driver fb layer */ - dev->mode_config.funcs->fb_changed(dev); - - return 0; -} -EXPORT_SYMBOL(drm_helper_initial_config); - static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) { int dpms = DRM_MODE_DPMS_OFF; @@ -1123,27 +755,6 @@ void drm_helper_connector_dpms(struct drm_connector *connector, int mode) } EXPORT_SYMBOL(drm_helper_connector_dpms); -/** - * drm_hotplug_stage_two - * @dev DRM device - * @connector hotpluged connector - * - * LOCKING. - * Caller must hold mode config lock, function might grab struct lock. - * - * Stage two of a hotplug. - * - * RETURNS: - * Zero on success, errno on failure. - */ -int drm_helper_hotplug_stage_two(struct drm_device *dev) -{ - drm_helper_plugged_event(dev); - - return 0; -} -EXPORT_SYMBOL(drm_helper_hotplug_stage_two); - int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, struct drm_mode_fb_cmd *mode_cmd) { |