mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-11-02 09:05:37 +01:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
342
drivers/gpu/drm/omapdrm/omap_irq.c
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342
drivers/gpu/drm/omapdrm/omap_irq.c
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/*
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* drivers/gpu/drm/omapdrm/omap_irq.c
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*
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* Copyright (C) 2012 Texas Instruments
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* Author: Rob Clark <rob.clark@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "omap_drv.h"
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static DEFINE_SPINLOCK(list_lock);
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static void omap_irq_error_handler(struct omap_drm_irq *irq,
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uint32_t irqstatus)
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{
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DRM_ERROR("errors: %08x\n", irqstatus);
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}
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/* call with list_lock and dispc runtime held */
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static void omap_irq_update(struct drm_device *dev)
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{
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struct omap_drm_private *priv = dev->dev_private;
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struct omap_drm_irq *irq;
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uint32_t irqmask = priv->vblank_mask;
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BUG_ON(!spin_is_locked(&list_lock));
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list_for_each_entry(irq, &priv->irq_list, node)
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irqmask |= irq->irqmask;
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DBG("irqmask=%08x", irqmask);
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dispc_write_irqenable(irqmask);
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dispc_read_irqenable(); /* flush posted write */
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}
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void __omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq)
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{
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struct omap_drm_private *priv = dev->dev_private;
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unsigned long flags;
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spin_lock_irqsave(&list_lock, flags);
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if (!WARN_ON(irq->registered)) {
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irq->registered = true;
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list_add(&irq->node, &priv->irq_list);
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omap_irq_update(dev);
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}
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spin_unlock_irqrestore(&list_lock, flags);
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}
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void omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq)
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{
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dispc_runtime_get();
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__omap_irq_register(dev, irq);
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dispc_runtime_put();
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}
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void __omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq)
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{
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unsigned long flags;
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spin_lock_irqsave(&list_lock, flags);
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if (!WARN_ON(!irq->registered)) {
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irq->registered = false;
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list_del(&irq->node);
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omap_irq_update(dev);
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}
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spin_unlock_irqrestore(&list_lock, flags);
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}
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void omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq)
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{
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dispc_runtime_get();
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__omap_irq_unregister(dev, irq);
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dispc_runtime_put();
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}
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struct omap_irq_wait {
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struct omap_drm_irq irq;
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int count;
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};
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static DECLARE_WAIT_QUEUE_HEAD(wait_event);
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static void wait_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
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{
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struct omap_irq_wait *wait =
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container_of(irq, struct omap_irq_wait, irq);
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wait->count--;
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wake_up_all(&wait_event);
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}
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struct omap_irq_wait * omap_irq_wait_init(struct drm_device *dev,
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uint32_t irqmask, int count)
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{
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struct omap_irq_wait *wait = kzalloc(sizeof(*wait), GFP_KERNEL);
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wait->irq.irq = wait_irq;
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wait->irq.irqmask = irqmask;
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wait->count = count;
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omap_irq_register(dev, &wait->irq);
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return wait;
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}
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int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait,
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unsigned long timeout)
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{
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int ret = wait_event_timeout(wait_event, (wait->count <= 0), timeout);
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omap_irq_unregister(dev, &wait->irq);
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kfree(wait);
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if (ret == 0)
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return -1;
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return 0;
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}
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/**
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* enable_vblank - enable vblank interrupt events
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* @dev: DRM device
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* @crtc: which irq to enable
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*
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* Enable vblank interrupts for @crtc. If the device doesn't have
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* a hardware vblank counter, this routine should be a no-op, since
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* interrupts will have to stay on to keep the count accurate.
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*
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* RETURNS
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* Zero on success, appropriate errno if the given @crtc's vblank
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* interrupt cannot be enabled.
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*/
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int omap_irq_enable_vblank(struct drm_device *dev, int crtc_id)
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{
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struct omap_drm_private *priv = dev->dev_private;
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struct drm_crtc *crtc = priv->crtcs[crtc_id];
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unsigned long flags;
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DBG("dev=%p, crtc=%d", dev, crtc_id);
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dispc_runtime_get();
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spin_lock_irqsave(&list_lock, flags);
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priv->vblank_mask |= pipe2vbl(crtc);
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omap_irq_update(dev);
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spin_unlock_irqrestore(&list_lock, flags);
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dispc_runtime_put();
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return 0;
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}
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/**
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* disable_vblank - disable vblank interrupt events
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* @dev: DRM device
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* @crtc: which irq to enable
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*
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* Disable vblank interrupts for @crtc. If the device doesn't have
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* a hardware vblank counter, this routine should be a no-op, since
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* interrupts will have to stay on to keep the count accurate.
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*/
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void omap_irq_disable_vblank(struct drm_device *dev, int crtc_id)
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{
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struct omap_drm_private *priv = dev->dev_private;
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struct drm_crtc *crtc = priv->crtcs[crtc_id];
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unsigned long flags;
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DBG("dev=%p, crtc=%d", dev, crtc_id);
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dispc_runtime_get();
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spin_lock_irqsave(&list_lock, flags);
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priv->vblank_mask &= ~pipe2vbl(crtc);
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omap_irq_update(dev);
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spin_unlock_irqrestore(&list_lock, flags);
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dispc_runtime_put();
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}
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irqreturn_t omap_irq_handler(int irq, void *arg)
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{
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struct drm_device *dev = (struct drm_device *) arg;
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struct omap_drm_private *priv = dev->dev_private;
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struct omap_drm_irq *handler, *n;
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unsigned long flags;
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unsigned int id;
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u32 irqstatus;
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irqstatus = dispc_read_irqstatus();
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dispc_clear_irqstatus(irqstatus);
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dispc_read_irqstatus(); /* flush posted write */
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VERB("irqs: %08x", irqstatus);
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for (id = 0; id < priv->num_crtcs; id++) {
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struct drm_crtc *crtc = priv->crtcs[id];
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if (irqstatus & pipe2vbl(crtc))
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drm_handle_vblank(dev, id);
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}
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spin_lock_irqsave(&list_lock, flags);
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list_for_each_entry_safe(handler, n, &priv->irq_list, node) {
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if (handler->irqmask & irqstatus) {
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spin_unlock_irqrestore(&list_lock, flags);
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handler->irq(handler, handler->irqmask & irqstatus);
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spin_lock_irqsave(&list_lock, flags);
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}
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}
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spin_unlock_irqrestore(&list_lock, flags);
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return IRQ_HANDLED;
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}
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void omap_irq_preinstall(struct drm_device *dev)
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{
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DBG("dev=%p", dev);
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dispc_runtime_get();
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dispc_clear_irqstatus(0xffffffff);
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dispc_runtime_put();
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}
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int omap_irq_postinstall(struct drm_device *dev)
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{
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struct omap_drm_private *priv = dev->dev_private;
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struct omap_drm_irq *error_handler = &priv->error_handler;
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DBG("dev=%p", dev);
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INIT_LIST_HEAD(&priv->irq_list);
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error_handler->irq = omap_irq_error_handler;
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error_handler->irqmask = DISPC_IRQ_OCP_ERR;
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/* for now ignore DISPC_IRQ_SYNC_LOST_DIGIT.. really I think
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* we just need to ignore it while enabling tv-out
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*/
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error_handler->irqmask &= ~DISPC_IRQ_SYNC_LOST_DIGIT;
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omap_irq_register(dev, error_handler);
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return 0;
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}
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void omap_irq_uninstall(struct drm_device *dev)
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{
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DBG("dev=%p", dev);
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// TODO prolly need to call drm_irq_uninstall() somewhere too
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}
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/*
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* We need a special version, instead of just using drm_irq_install(),
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* because we need to register the irq via omapdss. Once omapdss and
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* omapdrm are merged together we can assign the dispc hwmod data to
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* ourselves and drop these and just use drm_irq_{install,uninstall}()
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*/
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int omap_drm_irq_install(struct drm_device *dev)
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{
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int ret;
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mutex_lock(&dev->struct_mutex);
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if (dev->irq_enabled) {
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mutex_unlock(&dev->struct_mutex);
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return -EBUSY;
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}
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dev->irq_enabled = true;
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mutex_unlock(&dev->struct_mutex);
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/* Before installing handler */
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if (dev->driver->irq_preinstall)
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dev->driver->irq_preinstall(dev);
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ret = dispc_request_irq(dev->driver->irq_handler, dev);
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if (ret < 0) {
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mutex_lock(&dev->struct_mutex);
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dev->irq_enabled = false;
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mutex_unlock(&dev->struct_mutex);
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return ret;
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}
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/* After installing handler */
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if (dev->driver->irq_postinstall)
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ret = dev->driver->irq_postinstall(dev);
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if (ret < 0) {
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mutex_lock(&dev->struct_mutex);
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dev->irq_enabled = false;
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mutex_unlock(&dev->struct_mutex);
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dispc_free_irq(dev);
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}
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return ret;
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}
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int omap_drm_irq_uninstall(struct drm_device *dev)
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{
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unsigned long irqflags;
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bool irq_enabled;
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int i;
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mutex_lock(&dev->struct_mutex);
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irq_enabled = dev->irq_enabled;
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dev->irq_enabled = false;
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mutex_unlock(&dev->struct_mutex);
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/*
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* Wake up any waiters so they don't hang.
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*/
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if (dev->num_crtcs) {
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spin_lock_irqsave(&dev->vbl_lock, irqflags);
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for (i = 0; i < dev->num_crtcs; i++) {
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wake_up(&dev->vblank[i].queue);
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dev->vblank[i].enabled = false;
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dev->vblank[i].last =
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dev->driver->get_vblank_counter(dev, i);
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}
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spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
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}
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if (!irq_enabled)
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return -EINVAL;
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if (dev->driver->irq_uninstall)
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dev->driver->irq_uninstall(dev);
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dispc_free_irq(dev);
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return 0;
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}
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