From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/gpu/drm/omapdrm/omap_drv.c | 240 ++++++++++++++++++++++++++---- 1 file changed, 215 insertions(+), 25 deletions(-) (limited to 'kernel/drivers/gpu/drm/omapdrm/omap_drv.c') diff --git a/kernel/drivers/gpu/drm/omapdrm/omap_drv.c b/kernel/drivers/gpu/drm/omapdrm/omap_drv.c index 94920d47e..5c6609cbb 100644 --- a/kernel/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/kernel/drivers/gpu/drm/omapdrm/omap_drv.c @@ -17,11 +17,15 @@ * this program. If not, see . */ -#include "omap_drv.h" +#include + +#include +#include +#include +#include -#include "drm_crtc_helper.h" -#include "drm_fb_helper.h" #include "omap_dmm_tiler.h" +#include "omap_drv.h" #define DRIVER_NAME MODULE_NAME #define DRIVER_DESC "OMAP DRM" @@ -55,9 +59,153 @@ static void omap_fb_output_poll_changed(struct drm_device *dev) drm_fb_helper_hotplug_event(priv->fbdev); } +struct omap_atomic_state_commit { + struct work_struct work; + struct drm_device *dev; + struct drm_atomic_state *state; + u32 crtcs; +}; + +static void omap_atomic_wait_for_completion(struct drm_device *dev, + struct drm_atomic_state *old_state) +{ + struct drm_crtc_state *old_crtc_state; + struct drm_crtc *crtc; + unsigned int i; + int ret; + + for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { + if (!crtc->state->enable) + continue; + + ret = omap_crtc_wait_pending(crtc); + + if (!ret) + dev_warn(dev->dev, + "atomic complete timeout (pipe %u)!\n", i); + } +} + +static void omap_atomic_complete(struct omap_atomic_state_commit *commit) +{ + struct drm_device *dev = commit->dev; + struct omap_drm_private *priv = dev->dev_private; + struct drm_atomic_state *old_state = commit->state; + + /* Apply the atomic update. */ + dispc_runtime_get(); + + drm_atomic_helper_commit_modeset_disables(dev, old_state); + drm_atomic_helper_commit_planes(dev, old_state, false); + drm_atomic_helper_commit_modeset_enables(dev, old_state); + + omap_atomic_wait_for_completion(dev, old_state); + + drm_atomic_helper_cleanup_planes(dev, old_state); + + dispc_runtime_put(); + + drm_atomic_state_free(old_state); + + /* Complete the commit, wake up any waiter. */ + spin_lock(&priv->commit.lock); + priv->commit.pending &= ~commit->crtcs; + spin_unlock(&priv->commit.lock); + + wake_up_all(&priv->commit.wait); + + kfree(commit); +} + +static void omap_atomic_work(struct work_struct *work) +{ + struct omap_atomic_state_commit *commit = + container_of(work, struct omap_atomic_state_commit, work); + + omap_atomic_complete(commit); +} + +static bool omap_atomic_is_pending(struct omap_drm_private *priv, + struct omap_atomic_state_commit *commit) +{ + bool pending; + + spin_lock(&priv->commit.lock); + pending = priv->commit.pending & commit->crtcs; + spin_unlock(&priv->commit.lock); + + return pending; +} + +static int omap_atomic_commit(struct drm_device *dev, + struct drm_atomic_state *state, bool async) +{ + struct omap_drm_private *priv = dev->dev_private; + struct omap_atomic_state_commit *commit; + unsigned long flags; + unsigned int i; + int ret; + + ret = drm_atomic_helper_prepare_planes(dev, state); + if (ret) + return ret; + + /* Allocate the commit object. */ + commit = kzalloc(sizeof(*commit), GFP_KERNEL); + if (commit == NULL) { + ret = -ENOMEM; + goto error; + } + + INIT_WORK(&commit->work, omap_atomic_work); + commit->dev = dev; + commit->state = state; + + /* Wait until all affected CRTCs have completed previous commits and + * mark them as pending. + */ + for (i = 0; i < dev->mode_config.num_crtc; ++i) { + if (state->crtcs[i]) + commit->crtcs |= 1 << drm_crtc_index(state->crtcs[i]); + } + + wait_event(priv->commit.wait, !omap_atomic_is_pending(priv, commit)); + + spin_lock(&priv->commit.lock); + priv->commit.pending |= commit->crtcs; + spin_unlock(&priv->commit.lock); + + /* Keep track of all CRTC events to unlink them in preclose(). */ + spin_lock_irqsave(&dev->event_lock, flags); + for (i = 0; i < dev->mode_config.num_crtc; ++i) { + struct drm_crtc_state *cstate = state->crtc_states[i]; + + if (cstate && cstate->event) + list_add_tail(&cstate->event->base.link, + &priv->commit.events); + } + spin_unlock_irqrestore(&dev->event_lock, flags); + + /* Swap the state, this is the point of no return. */ + drm_atomic_helper_swap_state(dev, state); + + if (async) + schedule_work(&commit->work); + else + omap_atomic_complete(commit); + + return 0; + +error: + drm_atomic_helper_cleanup_planes(dev, state); + return ret; +} + static const struct drm_mode_config_funcs omap_mode_config_funcs = { .fb_create = omap_framebuffer_create, .output_poll_changed = omap_fb_output_poll_changed, + .atomic_check = drm_atomic_helper_check, + .atomic_commit = omap_atomic_commit, }; static int get_connector_type(struct omap_dss_device *dssdev) @@ -151,6 +299,27 @@ static int omap_modeset_create_crtc(struct drm_device *dev, int id, return 0; } +static int omap_modeset_init_properties(struct drm_device *dev) +{ + struct omap_drm_private *priv = dev->dev_private; + + if (priv->has_dmm) { + dev->mode_config.rotation_property = + drm_mode_create_rotation_property(dev, + BIT(DRM_ROTATE_0) | BIT(DRM_ROTATE_90) | + BIT(DRM_ROTATE_180) | BIT(DRM_ROTATE_270) | + BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y)); + if (!dev->mode_config.rotation_property) + return -ENOMEM; + } + + priv->zorder_prop = drm_property_create_range(dev, 0, "zorder", 0, 3); + if (!priv->zorder_prop) + return -ENOMEM; + + return 0; +} + static int omap_modeset_init(struct drm_device *dev) { struct omap_drm_private *priv = dev->dev_private; @@ -165,6 +334,10 @@ static int omap_modeset_init(struct drm_device *dev) omap_drm_irq_install(dev); + ret = omap_modeset_init_properties(dev); + if (ret < 0) + return ret; + /* * We usually don't want to create a CRTC for each manager, at least * not until we have a way to expose private planes to userspace. @@ -325,6 +498,8 @@ static int omap_modeset_init(struct drm_device *dev) dev->mode_config.funcs = &omap_mode_config_funcs; + drm_mode_config_reset(dev); + return 0; } @@ -451,12 +626,12 @@ static int ioctl_gem_info(struct drm_device *dev, void *data, } static const struct drm_ioctl_desc ioctls[DRM_COMMAND_END - DRM_COMMAND_BASE] = { - DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param, DRM_UNLOCKED|DRM_AUTH), - DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param, DRM_UNLOCKED|DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH), - DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH), - DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH), - DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH), + DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param, DRM_AUTH), + DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new, DRM_AUTH), + DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, ioctl_gem_cpu_prep, DRM_AUTH), + DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, ioctl_gem_cpu_fini, DRM_AUTH), + DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info, DRM_AUTH), }; /* @@ -477,6 +652,7 @@ static int dev_load(struct drm_device *dev, unsigned long flags) { struct omap_drm_platform_data *pdata = dev->dev->platform_data; struct omap_drm_private *priv; + unsigned int i; int ret; DBG("load: dev=%p", dev); @@ -490,6 +666,9 @@ static int dev_load(struct drm_device *dev, unsigned long flags) dev->dev_private = priv; priv->wq = alloc_ordered_workqueue("omapdrm", 0); + init_waitqueue_head(&priv->commit.wait); + spin_lock_init(&priv->commit.lock); + INIT_LIST_HEAD(&priv->commit.events); spin_lock_init(&priv->list_lock); INIT_LIST_HEAD(&priv->obj_list); @@ -504,10 +683,14 @@ static int dev_load(struct drm_device *dev, unsigned long flags) return ret; } + /* Initialize vblank handling, start with all CRTCs disabled. */ ret = drm_vblank_init(dev, priv->num_crtcs); if (ret) dev_warn(dev->dev, "could not init vblank\n"); + for (i = 0; i < priv->num_crtcs; i++) + drm_crtc_vblank_off(priv->crtcs[i]); + priv->fbdev = omap_fbdev_init(dev); if (!priv->fbdev) { dev_warn(dev->dev, "omap_fbdev_init failed\n"); @@ -525,7 +708,6 @@ static int dev_load(struct drm_device *dev, unsigned long flags) static int dev_unload(struct drm_device *dev) { struct omap_drm_private *priv = dev->dev_private; - int i; DBG("unload: dev=%p", dev); @@ -534,10 +716,6 @@ static int dev_unload(struct drm_device *dev) if (priv->fbdev) omap_fbdev_free(dev); - /* flush crtcs so the fbs get released */ - for (i = 0; i < priv->num_crtcs; i++) - omap_crtc_flush(priv->crtcs[i]); - omap_modeset_free(dev); omap_gem_deinit(dev); @@ -575,7 +753,7 @@ static void dev_lastclose(struct drm_device *dev) { int i; - /* we don't support vga-switcheroo.. so just make sure the fbdev + /* we don't support vga_switcheroo.. so just make sure the fbdev * mode is active */ struct omap_drm_private *priv = dev->dev_private; @@ -583,7 +761,7 @@ static void dev_lastclose(struct drm_device *dev) DBG("lastclose: dev=%p", dev); - if (priv->rotation_prop) { + if (dev->mode_config.rotation_property) { /* need to restore default rotation state.. not sure * if there is a cleaner way to restore properties to * default state? Maybe a flag that properties should @@ -592,12 +770,12 @@ static void dev_lastclose(struct drm_device *dev) */ for (i = 0; i < priv->num_crtcs; i++) { drm_object_property_set_value(&priv->crtcs[i]->base, - priv->rotation_prop, 0); + dev->mode_config.rotation_property, 0); } for (i = 0; i < priv->num_planes; i++) { drm_object_property_set_value(&priv->planes[i]->base, - priv->rotation_prop, 0); + dev->mode_config.rotation_property, 0); } } @@ -610,7 +788,24 @@ static void dev_lastclose(struct drm_device *dev) static void dev_preclose(struct drm_device *dev, struct drm_file *file) { + struct omap_drm_private *priv = dev->dev_private; + struct drm_pending_event *event; + unsigned long flags; + DBG("preclose: dev=%p", dev); + + /* + * Unlink all pending CRTC events to make sure they won't be queued up + * by a pending asynchronous commit. + */ + spin_lock_irqsave(&dev->event_lock, flags); + list_for_each_entry(event, &priv->commit.events, link) { + if (event->file_priv == file) { + file->event_space += event->event->length; + event->file_priv = NULL; + } + } + spin_unlock_irqrestore(&dev->event_lock, flags); } static void dev_postclose(struct drm_device *dev, struct drm_file *file) @@ -636,8 +831,7 @@ static const struct file_operations omapdriver_fops = { }; static struct drm_driver omap_drm_driver = { - .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET | DRIVER_GEM - | DRIVER_PRIME, + .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, .load = dev_load, .unload = dev_unload, .open = dev_open, @@ -645,13 +839,9 @@ static struct drm_driver omap_drm_driver = { .preclose = dev_preclose, .postclose = dev_postclose, .set_busid = drm_platform_set_busid, - .get_vblank_counter = drm_vblank_count, + .get_vblank_counter = drm_vblank_no_hw_counter, .enable_vblank = omap_irq_enable_vblank, .disable_vblank = omap_irq_disable_vblank, - .irq_preinstall = omap_irq_preinstall, - .irq_postinstall = omap_irq_postinstall, - .irq_uninstall = omap_irq_uninstall, - .irq_handler = omap_irq_handler, #ifdef CONFIG_DEBUG_FS .debugfs_init = omap_debugfs_init, .debugfs_cleanup = omap_debugfs_cleanup, -- cgit 1.2.3-korg