diff options
author | Eric Anholt <eric@anholt.net> | 2008-11-04 18:36:29 -0800 |
---|---|---|
committer | Dave Airlie <airlied@linux.ie> | 2008-11-11 17:44:26 +1000 |
commit | 5d8e6bb7a20b6206e1fe44565efc383a941b81fa (patch) | |
tree | 088f954cf9d902455b1db968954fb3aed6edb246 /drivers/gpu/drm/drm_irq.c | |
parent | bd95e0a4a6bb9485fe35dda62719663f6ceabae1 (diff) | |
download | linux-5d8e6bb7a20b6206e1fe44565efc383a941b81fa.tar.bz2 |
drm: Remove infrastructure for supporting i915's vblank swapping.
It's not used in any other drivers, and doesn't look like it will be from
drm.git master.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/gpu/drm/drm_irq.c')
-rw-r--r-- | drivers/gpu/drm/drm_irq.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index 212a94f715b2..15c8dabc3e97 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -280,8 +280,6 @@ int drm_irq_uninstall(struct drm_device * dev) drm_vblank_cleanup(dev); - dev->locked_tasklet_func = NULL; - return 0; } EXPORT_SYMBOL(drm_irq_uninstall); @@ -699,81 +697,3 @@ void drm_handle_vblank(struct drm_device *dev, int crtc) drm_vbl_send_signals(dev, crtc); } EXPORT_SYMBOL(drm_handle_vblank); - -/** - * Tasklet wrapper function. - * - * \param data DRM device in disguise. - * - * Attempts to grab the HW lock and calls the driver callback on success. On - * failure, leave the lock marked as contended so the callback can be called - * from drm_unlock(). - */ -static void drm_locked_tasklet_func(unsigned long data) -{ - struct drm_device *dev = (struct drm_device *)data; - unsigned long irqflags; - void (*tasklet_func)(struct drm_device *); - - spin_lock_irqsave(&dev->tasklet_lock, irqflags); - tasklet_func = dev->locked_tasklet_func; - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - - if (!tasklet_func || - !drm_lock_take(&dev->lock, - DRM_KERNEL_CONTEXT)) { - return; - } - - dev->lock.lock_time = jiffies; - atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); - - spin_lock_irqsave(&dev->tasklet_lock, irqflags); - tasklet_func = dev->locked_tasklet_func; - dev->locked_tasklet_func = NULL; - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - - if (tasklet_func != NULL) - tasklet_func(dev); - - drm_lock_free(&dev->lock, - DRM_KERNEL_CONTEXT); -} - -/** - * Schedule a tasklet to call back a driver hook with the HW lock held. - * - * \param dev DRM device. - * \param func Driver callback. - * - * This is intended for triggering actions that require the HW lock from an - * interrupt handler. The lock will be grabbed ASAP after the interrupt handler - * completes. Note that the callback may be called from interrupt or process - * context, it must not make any assumptions about this. Also, the HW lock will - * be held with the kernel context or any client context. - */ -void drm_locked_tasklet(struct drm_device *dev, void (*func)(struct drm_device *)) -{ - unsigned long irqflags; - static DECLARE_TASKLET(drm_tasklet, drm_locked_tasklet_func, 0); - - if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ) || - test_bit(TASKLET_STATE_SCHED, &drm_tasklet.state)) - return; - - spin_lock_irqsave(&dev->tasklet_lock, irqflags); - - if (dev->locked_tasklet_func) { - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - return; - } - - dev->locked_tasklet_func = func; - - spin_unlock_irqrestore(&dev->tasklet_lock, irqflags); - - drm_tasklet.data = (unsigned long)dev; - - tasklet_hi_schedule(&drm_tasklet); -} -EXPORT_SYMBOL(drm_locked_tasklet); |