From 4abe35204af82a018ca3ce6db4102aa09719698e Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Tue, 30 Mar 2010 05:34:18 +0000 Subject: drm/kms/fb: use slow work mechanism for normal hotplug also. a) slow work is always used now for any fbcon hotplug, as its not a fast task and is more suited to being ran under slow work. b) attempt to not do any fbdev changes when X is running as we'll just mess it up. This hooks set_par to hopefully do the changes once X hands control to fbdev. This also adds the nouveau/intel hotplug support. Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_fb_helper.c | 207 ++++++++++++++++++++++++---------------- 1 file changed, 124 insertions(+), 83 deletions(-) (limited to 'drivers/gpu/drm/drm_fb_helper.c') diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 3312092..b889eb0 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -41,6 +41,8 @@ MODULE_LICENSE("GPL and additional rights"); static LIST_HEAD(kernel_fb_helper_list); +static struct slow_work_ops output_status_change_ops; + /* simple single crtc case helper function */ int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) { @@ -420,54 +422,81 @@ static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) kfree(helper->crtc_info); } -int drm_fb_helper_init_crtc_count(struct drm_device *dev, - struct drm_fb_helper *helper, - int crtc_count, int max_conn_count) +int drm_fb_helper_init(struct drm_device *dev, + struct drm_fb_helper *fb_helper, + int crtc_count, int max_conn_count, + bool polled) { struct drm_crtc *crtc; int ret = 0; int i; - INIT_LIST_HEAD(&helper->kernel_fb_list); - helper->dev = dev; - helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); - if (!helper->crtc_info) + fb_helper->dev = dev; + fb_helper->poll_enabled = polled; + + slow_work_register_user(THIS_MODULE); + delayed_slow_work_init(&fb_helper->output_status_change_slow_work, + &output_status_change_ops); + + INIT_LIST_HEAD(&fb_helper->kernel_fb_list); + + fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); + if (!fb_helper->crtc_info) return -ENOMEM; - helper->crtc_count = crtc_count; - helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); - if (!helper->connector_info) { - kfree(helper->crtc_info); + fb_helper->crtc_count = crtc_count; + fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); + if (!fb_helper->connector_info) { + kfree(fb_helper->crtc_info); return -ENOMEM; } - helper->connector_count = 0; + fb_helper->connector_count = 0; for (i = 0; i < crtc_count; i++) { - helper->crtc_info[i].mode_set.connectors = + fb_helper->crtc_info[i].mode_set.connectors = kcalloc(max_conn_count, sizeof(struct drm_connector *), GFP_KERNEL); - if (!helper->crtc_info[i].mode_set.connectors) { + if (!fb_helper->crtc_info[i].mode_set.connectors) { ret = -ENOMEM; goto out_free; } - helper->crtc_info[i].mode_set.num_connectors = 0; + fb_helper->crtc_info[i].mode_set.num_connectors = 0; } i = 0; list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - helper->crtc_info[i].crtc_id = crtc->base.id; - helper->crtc_info[i].mode_set.crtc = crtc; + fb_helper->crtc_info[i].crtc_id = crtc->base.id; + fb_helper->crtc_info[i].mode_set.crtc = crtc; i++; } - helper->conn_limit = max_conn_count; + fb_helper->conn_limit = max_conn_count; return 0; out_free: - drm_fb_helper_crtc_free(helper); + drm_fb_helper_crtc_free(fb_helper); return -ENOMEM; } -EXPORT_SYMBOL(drm_fb_helper_init_crtc_count); +EXPORT_SYMBOL(drm_fb_helper_init); + +void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) +{ + if (!list_empty(&fb_helper->kernel_fb_list)) { + list_del(&fb_helper->kernel_fb_list); + if (list_empty(&kernel_fb_helper_list)) { + printk(KERN_INFO "unregistered panic notifier\n"); + atomic_notifier_chain_unregister(&panic_notifier_list, + &paniced); + unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); + } + } + + drm_fb_helper_crtc_free(fb_helper); + + delayed_slow_work_cancel(&fb_helper->output_status_change_slow_work); + slow_work_unregister_user(THIS_MODULE); +} +EXPORT_SYMBOL(drm_fb_helper_fini); static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, u16 blue, u16 regno, struct fb_info *info) @@ -710,6 +739,11 @@ int drm_fb_helper_set_par(struct fb_info *info) } } mutex_unlock(&dev->mode_config.mutex); + + if (fb_helper->delayed_hotplug) { + fb_helper->delayed_hotplug = false; + delayed_slow_work_enqueue(&fb_helper->output_status_change_slow_work, 0); + } return 0; } EXPORT_SYMBOL(drm_fb_helper_set_par); @@ -751,7 +785,7 @@ int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, { int new_fb = 0; int crtc_count = 0; - int ret, i; + int i; struct fb_info *info; struct drm_fb_helper_surface_size sizes; int gamma_size = 0; @@ -827,7 +861,7 @@ int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, } /* push down into drivers */ - new_fb = (*fb_helper->fb_probe)(fb_helper, &sizes); + new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); if (new_fb < 0) return new_fb; @@ -840,11 +874,7 @@ int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, if (new_fb) { info->var.pixclock = 0; - ret = fb_alloc_cmap(&info->cmap, gamma_size, 0); - if (ret) - return ret; if (register_framebuffer(info) < 0) { - fb_dealloc_cmap(&info->cmap); return -EINVAL; } @@ -870,23 +900,6 @@ int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, } EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); -void drm_fb_helper_free(struct drm_fb_helper *helper) -{ - if (!list_empty(&helper->kernel_fb_list)) { - list_del(&helper->kernel_fb_list); - if (list_empty(&kernel_fb_helper_list)) { - printk(KERN_INFO "unregistered panic notifier\n"); - atomic_notifier_chain_unregister(&panic_notifier_list, - &paniced); - unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); - } - } - drm_fb_helper_crtc_free(helper); - if (helper->fbdev->cmap.len) - fb_dealloc_cmap(&helper->fbdev->cmap); -} -EXPORT_SYMBOL(drm_fb_helper_free); - void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, uint32_t depth) { @@ -1291,7 +1304,7 @@ static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) * RETURNS: * Zero if everything went ok, nonzero otherwise. */ -bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper) +bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) { struct drm_device *dev = fb_helper->dev; int count = 0; @@ -1304,13 +1317,12 @@ bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper) count = drm_fb_helper_probe_connector_modes(fb_helper, dev->mode_config.max_width, dev->mode_config.max_height); - /* * we shouldn't end up with no modes here. */ if (count == 0) { if (fb_helper->poll_enabled) { - delayed_slow_work_enqueue(&fb_helper->output_poll_slow_work, + delayed_slow_work_enqueue(&fb_helper->output_status_change_slow_work, 5*HZ); printk(KERN_INFO "No connectors reported connected with modes - started polling\n"); } else @@ -1318,85 +1330,114 @@ bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper) } drm_setup_crtcs(fb_helper); - return 0; + return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); } EXPORT_SYMBOL(drm_fb_helper_initial_config); -bool drm_helper_fb_hotplug_event(struct drm_fb_helper *fb_helper, - u32 max_width, u32 max_height, bool polled) +/* we got a hotplug irq - need to update fbcon */ +void drm_helper_fb_hpd_irq_event(struct drm_fb_helper *fb_helper) +{ + /* if we don't have the fbdev registered yet do nothing */ + if (!fb_helper->fbdev) + return; + + /* schedule a slow work asap */ + delayed_slow_work_enqueue(&fb_helper->output_status_change_slow_work, 0); +} +EXPORT_SYMBOL(drm_helper_fb_hpd_irq_event); + +bool drm_helper_fb_hotplug_event(struct drm_fb_helper *fb_helper, bool polled) { int count = 0; int ret; + u32 max_width, max_height, bpp_sel; + + if (!fb_helper->fb) + return false; DRM_DEBUG_KMS("\n"); + max_width = fb_helper->fb->width; + max_height = fb_helper->fb->height; + bpp_sel = fb_helper->fb->bits_per_pixel; + count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, max_height); if (fb_helper->poll_enabled && !polled) { if (count) { - delayed_slow_work_cancel(&fb_helper->output_poll_slow_work); + delayed_slow_work_cancel(&fb_helper->output_status_change_slow_work); } else { - ret = delayed_slow_work_enqueue(&fb_helper->output_poll_slow_work, 5*HZ); + ret = delayed_slow_work_enqueue(&fb_helper->output_status_change_slow_work, 5*HZ); } } drm_setup_crtcs(fb_helper); - return true; + return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); } EXPORT_SYMBOL(drm_helper_fb_hotplug_event); -static void output_poll_execute(struct slow_work *work) +/* + * delayed work queue execution function + * - check if fbdev is actually in use on the gpu + * - if not set delayed flag and repoll if necessary + * - check for connector status change + * - repoll if 0 modes found + *- call driver output status changed notifier + */ +static void output_status_change_execute(struct slow_work *work) { struct delayed_slow_work *delayed_work = container_of(work, struct delayed_slow_work, work); - struct drm_fb_helper *fb_helper = container_of(delayed_work, struct drm_fb_helper, output_poll_slow_work); - struct drm_device *dev = fb_helper->dev; + struct drm_fb_helper *fb_helper = container_of(delayed_work, struct drm_fb_helper, output_status_change_slow_work); struct drm_connector *connector; enum drm_connector_status old_status, status; - bool repoll = true, changed = false; + bool repoll, changed = false; int ret; + int i; + bool bound = false, crtcs_bound = false; + struct drm_crtc *crtc; - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + repoll = fb_helper->poll_enabled; + + /* first of all check the fbcon framebuffer is actually bound to any crtc */ + /* take into account that no crtc at all maybe bound */ + list_for_each_entry(crtc, &fb_helper->dev->mode_config.crtc_list, head) { + if (crtc->fb) + crtcs_bound = true; + if (crtc->fb == fb_helper->fb) + bound = true; + } + + if (bound == false && crtcs_bound) { + fb_helper->delayed_hotplug = true; + goto requeue; + } + + for (i = 0; i < fb_helper->connector_count; i++) { + connector = fb_helper->connector_info[i]->connector; old_status = connector->status; status = connector->funcs->detect(connector); if (old_status != status) { changed = true; - /* something changed */ } - if (status == connector_status_connected) { + if (status == connector_status_connected && repoll) { DRM_DEBUG("%s is connected - stop polling\n", drm_get_connector_name(connector)); repoll = false; } } + if (changed) { + if (fb_helper->funcs->fb_output_status_changed) + fb_helper->funcs->fb_output_status_changed(fb_helper); + } + +requeue: if (repoll) { ret = delayed_slow_work_enqueue(delayed_work, 5*HZ); if (ret) DRM_ERROR("delayed enqueue failed %d\n", ret); } - - if (changed) { - if (fb_helper->fb_poll_changed) - fb_helper->fb_poll_changed(fb_helper); - } } -struct slow_work_ops output_poll_ops = { - .execute = output_poll_execute, +static struct slow_work_ops output_status_change_ops = { + .execute = output_status_change_execute, }; -void drm_fb_helper_poll_init(struct drm_fb_helper *fb_helper) -{ - int ret; - - ret = slow_work_register_user(THIS_MODULE); - - delayed_slow_work_init(&fb_helper->output_poll_slow_work, &output_poll_ops); - fb_helper->poll_enabled = true; -} -EXPORT_SYMBOL(drm_fb_helper_poll_init); - -void drm_fb_helper_poll_fini(struct drm_fb_helper *fb_helper) -{ - delayed_slow_work_cancel(&fb_helper->output_poll_slow_work); - slow_work_unregister_user(THIS_MODULE); -} -EXPORT_SYMBOL(drm_fb_helper_poll_fini); -- cgit v1.1