diff options
Diffstat (limited to 'drivers/gpu/drm/msm/mdp4/mdp4_irq.c')
| -rw-r--r-- | drivers/gpu/drm/msm/mdp4/mdp4_irq.c | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/drivers/gpu/drm/msm/mdp4/mdp4_irq.c b/drivers/gpu/drm/msm/mdp4/mdp4_irq.c deleted file mode 100644 index 5c6b7fca4edd..000000000000 --- a/drivers/gpu/drm/msm/mdp4/mdp4_irq.c +++ /dev/null @@ -1,203 +0,0 @@ -/* - * Copyright (C) 2013 Red Hat - * Author: Rob Clark <robdclark@gmail.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. - */ - - -#include "msm_drv.h" -#include "mdp4_kms.h" - - -struct mdp4_irq_wait { - struct mdp4_irq irq; - int count; -}; - -static DECLARE_WAIT_QUEUE_HEAD(wait_event); - -static DEFINE_SPINLOCK(list_lock); - -static void update_irq(struct mdp4_kms *mdp4_kms) -{ - struct mdp4_irq *irq; - uint32_t irqmask = mdp4_kms->vblank_mask; - - BUG_ON(!spin_is_locked(&list_lock)); - - list_for_each_entry(irq, &mdp4_kms->irq_list, node) - irqmask |= irq->irqmask; - - mdp4_write(mdp4_kms, REG_MDP4_INTR_ENABLE, irqmask); -} - -static void update_irq_unlocked(struct mdp4_kms *mdp4_kms) -{ - unsigned long flags; - spin_lock_irqsave(&list_lock, flags); - update_irq(mdp4_kms); - spin_unlock_irqrestore(&list_lock, flags); -} - -static void mdp4_irq_error_handler(struct mdp4_irq *irq, uint32_t irqstatus) -{ - DRM_ERROR("errors: %08x\n", irqstatus); -} - -void mdp4_irq_preinstall(struct msm_kms *kms) -{ - struct mdp4_kms *mdp4_kms = to_mdp4_kms(kms); - mdp4_write(mdp4_kms, REG_MDP4_INTR_CLEAR, 0xffffffff); -} - -int mdp4_irq_postinstall(struct msm_kms *kms) -{ - struct mdp4_kms *mdp4_kms = to_mdp4_kms(kms); - struct mdp4_irq *error_handler = &mdp4_kms->error_handler; - - INIT_LIST_HEAD(&mdp4_kms->irq_list); - - error_handler->irq = mdp4_irq_error_handler; - error_handler->irqmask = MDP4_IRQ_PRIMARY_INTF_UDERRUN | - MDP4_IRQ_EXTERNAL_INTF_UDERRUN; - - mdp4_irq_register(mdp4_kms, error_handler); - - return 0; -} - -void mdp4_irq_uninstall(struct msm_kms *kms) -{ - struct mdp4_kms *mdp4_kms = to_mdp4_kms(kms); - mdp4_write(mdp4_kms, REG_MDP4_INTR_ENABLE, 0x00000000); -} - -irqreturn_t mdp4_irq(struct msm_kms *kms) -{ - struct mdp4_kms *mdp4_kms = to_mdp4_kms(kms); - struct drm_device *dev = mdp4_kms->dev; - struct msm_drm_private *priv = dev->dev_private; - struct mdp4_irq *handler, *n; - unsigned long flags; - unsigned int id; - uint32_t status; - - status = mdp4_read(mdp4_kms, REG_MDP4_INTR_STATUS); - mdp4_write(mdp4_kms, REG_MDP4_INTR_CLEAR, status); - - VERB("status=%08x", status); - - for (id = 0; id < priv->num_crtcs; id++) - if (status & mdp4_crtc_vblank(priv->crtcs[id])) - drm_handle_vblank(dev, id); - - spin_lock_irqsave(&list_lock, flags); - mdp4_kms->in_irq = true; - list_for_each_entry_safe(handler, n, &mdp4_kms->irq_list, node) { - if (handler->irqmask & status) { - spin_unlock_irqrestore(&list_lock, flags); - handler->irq(handler, handler->irqmask & status); - spin_lock_irqsave(&list_lock, flags); - } - } - mdp4_kms->in_irq = false; - update_irq(mdp4_kms); - spin_unlock_irqrestore(&list_lock, flags); - - return IRQ_HANDLED; -} - -int mdp4_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc) -{ - struct mdp4_kms *mdp4_kms = to_mdp4_kms(kms); - unsigned long flags; - - spin_lock_irqsave(&list_lock, flags); - mdp4_kms->vblank_mask |= mdp4_crtc_vblank(crtc); - update_irq(mdp4_kms); - spin_unlock_irqrestore(&list_lock, flags); - - return 0; -} - -void mdp4_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc) -{ - struct mdp4_kms *mdp4_kms = to_mdp4_kms(kms); - unsigned long flags; - - spin_lock_irqsave(&list_lock, flags); - mdp4_kms->vblank_mask &= ~mdp4_crtc_vblank(crtc); - update_irq(mdp4_kms); - spin_unlock_irqrestore(&list_lock, flags); -} - -static void wait_irq(struct mdp4_irq *irq, uint32_t irqstatus) -{ - struct mdp4_irq_wait *wait = - container_of(irq, struct mdp4_irq_wait, irq); - wait->count--; - wake_up_all(&wait_event); -} - -void mdp4_irq_wait(struct mdp4_kms *mdp4_kms, uint32_t irqmask) -{ - struct mdp4_irq_wait wait = { - .irq = { - .irq = wait_irq, - .irqmask = irqmask, - }, - .count = 1, - }; - mdp4_irq_register(mdp4_kms, &wait.irq); - wait_event(wait_event, (wait.count <= 0)); - mdp4_irq_unregister(mdp4_kms, &wait.irq); -} - -void mdp4_irq_register(struct mdp4_kms *mdp4_kms, struct mdp4_irq *irq) -{ - unsigned long flags; - bool needs_update = false; - - spin_lock_irqsave(&list_lock, flags); - - if (!irq->registered) { - irq->registered = true; - list_add(&irq->node, &mdp4_kms->irq_list); - needs_update = !mdp4_kms->in_irq; - } - - spin_unlock_irqrestore(&list_lock, flags); - - if (needs_update) - update_irq_unlocked(mdp4_kms); -} - -void mdp4_irq_unregister(struct mdp4_kms *mdp4_kms, struct mdp4_irq *irq) -{ - unsigned long flags; - bool needs_update = false; - - spin_lock_irqsave(&list_lock, flags); - - if (irq->registered) { - irq->registered = false; - list_del(&irq->node); - needs_update = !mdp4_kms->in_irq; - } - - spin_unlock_irqrestore(&list_lock, flags); - - if (needs_update) - update_irq_unlocked(mdp4_kms); -} |