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Diffstat (limited to 'shared/via_irq.c')
-rw-r--r--shared/via_irq.c182
1 files changed, 92 insertions, 90 deletions
diff --git a/shared/via_irq.c b/shared/via_irq.c
index eafb1d7d..f9384f20 100644
--- a/shared/via_irq.c
+++ b/shared/via_irq.c
@@ -40,126 +40,128 @@
#include "via_drv.h"
#define VIA_REG_INTERRUPT 0x200
-
+
/* VIA_REG_INTERRUPT */
#define VIA_IRQ_GLOBAL (1 << 31)
#define VIA_IRQ_VBI_ENABLE (1 << 19)
#define VIA_IRQ_VBI_PENDING (1 << 3)
-irqreturn_t via_driver_irq_handler( DRM_IRQ_ARGS )
+irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
{
- drm_device_t* dev = (drm_device_t*)arg;
- drm_via_private_t* dev_priv = (drm_via_private_t*)dev->dev_private;
- u32 status;
- int handled = 0;
-
- status = VIA_READ(VIA_REG_INTERRUPT);
- DRM_DEBUG("viadrv_irq_handler Status: %x\n",status);
- if(status & VIA_IRQ_VBI_PENDING){
- atomic_inc(&dev->vbl_received);
- DRM_WAKEUP(&dev->vbl_queue);
- DRM(vbl_send_signals)(dev);
- handled = 1;
- }
-
- /* Acknowlege interrupts ?? */
- VIA_WRITE(VIA_REG_INTERRUPT, status);
+ drm_device_t *dev = (drm_device_t *) arg;
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+ u32 status;
+ int handled = 0;
+
+ status = VIA_READ(VIA_REG_INTERRUPT);
+ DRM_DEBUG("viadrv_irq_handler Status: %x\n", status);
+ if (status & VIA_IRQ_VBI_PENDING) {
+ atomic_inc(&dev->vbl_received);
+ DRM_WAKEUP(&dev->vbl_queue);
+ DRM(vbl_send_signals) (dev);
+ handled = 1;
+ }
+
+ /* Acknowlege interrupts ?? */
+ VIA_WRITE(VIA_REG_INTERRUPT, status);
if (handled)
- return IRQ_HANDLED;
+ return IRQ_HANDLED;
else
return IRQ_NONE;
}
-static __inline__ void viadrv_acknowledge_irqs(drm_via_private_t* dev_priv)
+static __inline__ void viadrv_acknowledge_irqs(drm_via_private_t * dev_priv)
{
- u32 status;
-
- if(dev_priv){
- /* Acknowlege interrupts ?? */
- status = VIA_READ(VIA_REG_INTERRUPT);
- VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_VBI_PENDING);
- }
+ u32 status;
+
+ if (dev_priv) {
+ /* Acknowlege interrupts ?? */
+ status = VIA_READ(VIA_REG_INTERRUPT);
+ VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_VBI_PENDING);
+ }
}
-int via_driver_vblank_wait(drm_device_t* dev, unsigned int* sequence)
+int via_driver_vblank_wait(drm_device_t * dev, unsigned int *sequence)
{
- drm_via_private_t* dev_priv = (drm_via_private_t*)dev->dev_private;
- unsigned int cur_vblank;
- int ret = 0;
-
- DRM_DEBUG("viadrv_vblank_wait\n");
- if(!dev_priv){
- DRM_ERROR("%s called with no initialization\n", __FUNCTION__ );
- return -EINVAL;
- }
-
- viadrv_acknowledge_irqs(dev_priv);
-
- /* Assume that the user has missed the current sequence number
- * by about a day rather than she wants to wait for years
- * using vertical blanks...
- */
- DRM_WAIT_ON(ret, dev->vbl_queue, 3*DRM_HZ,
- (((cur_vblank = atomic_read(&dev->vbl_received)) -
- *sequence ) <= (1<<23)));
-
- *sequence = cur_vblank;
- return ret;
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+ unsigned int cur_vblank;
+ int ret = 0;
+
+ DRM_DEBUG("viadrv_vblank_wait\n");
+ if (!dev_priv) {
+ DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
+ return -EINVAL;
+ }
+
+ viadrv_acknowledge_irqs(dev_priv);
+
+ /* Assume that the user has missed the current sequence number
+ * by about a day rather than she wants to wait for years
+ * using vertical blanks...
+ */
+ DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
+ (((cur_vblank = atomic_read(&dev->vbl_received)) -
+ *sequence) <= (1 << 23)));
+
+ *sequence = cur_vblank;
+ return ret;
}
/*
* drm_dma.h hooks
*/
-void via_driver_irq_preinstall(drm_device_t* dev){
- drm_via_private_t* dev_priv = (drm_via_private_t *)dev->dev_private;
- u32 status;
-
- DRM_DEBUG("driver_irq_preinstall: dev_priv: %p\n", dev_priv);
- if(dev_priv){
- DRM_DEBUG("mmio: %p\n", dev_priv->mmio);
- status = VIA_READ(VIA_REG_INTERRUPT);
- DRM_DEBUG("intreg: %x\n", status & VIA_IRQ_VBI_ENABLE);
-
- // Clear VSync interrupt regs
- VIA_WRITE(VIA_REG_INTERRUPT, status & ~VIA_IRQ_VBI_ENABLE);
-
- /* Clear bits if they're already high */
- viadrv_acknowledge_irqs(dev_priv);
- }
+void via_driver_irq_preinstall(drm_device_t * dev)
+{
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+ u32 status;
+
+ DRM_DEBUG("driver_irq_preinstall: dev_priv: %p\n", dev_priv);
+ if (dev_priv) {
+ DRM_DEBUG("mmio: %p\n", dev_priv->mmio);
+ status = VIA_READ(VIA_REG_INTERRUPT);
+ DRM_DEBUG("intreg: %x\n", status & VIA_IRQ_VBI_ENABLE);
+
+ // Clear VSync interrupt regs
+ VIA_WRITE(VIA_REG_INTERRUPT, status & ~VIA_IRQ_VBI_ENABLE);
+
+ /* Clear bits if they're already high */
+ viadrv_acknowledge_irqs(dev_priv);
+ }
}
-void via_driver_irq_postinstall(drm_device_t* dev){
- drm_via_private_t* dev_priv = (drm_via_private_t *)dev->dev_private;
- u32 status;
+void via_driver_irq_postinstall(drm_device_t * dev)
+{
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+ u32 status;
- DRM_DEBUG("via_driver_irq_postinstall\n");
- if(dev_priv){
- status = VIA_READ(VIA_REG_INTERRUPT);
- VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
- | VIA_IRQ_VBI_ENABLE);
- /* Some magic, oh for some data sheets ! */
+ DRM_DEBUG("via_driver_irq_postinstall\n");
+ if (dev_priv) {
+ status = VIA_READ(VIA_REG_INTERRUPT);
+ VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
+ | VIA_IRQ_VBI_ENABLE);
+ /* Some magic, oh for some data sheets ! */
- VIA_WRITE8(0x83d4, 0x11);
- VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
+ VIA_WRITE8(0x83d4, 0x11);
+ VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
- }
+ }
}
-void via_driver_irq_uninstall(drm_device_t* dev){
- drm_via_private_t* dev_priv = (drm_via_private_t *)dev->dev_private;
- u32 status;
+void via_driver_irq_uninstall(drm_device_t * dev)
+{
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+ u32 status;
- DRM_DEBUG("driver_irq_uninstall)\n");
- if(dev_priv){
+ DRM_DEBUG("driver_irq_uninstall)\n");
+ if (dev_priv) {
- /* Some more magic, oh for some data sheets ! */
+ /* Some more magic, oh for some data sheets ! */
- VIA_WRITE8(0x83d4, 0x11);
- VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) & ~0x30);
+ VIA_WRITE8(0x83d4, 0x11);
+ VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) & ~0x30);
- status = VIA_READ(VIA_REG_INTERRUPT);
- VIA_WRITE(VIA_REG_INTERRUPT, status & ~VIA_IRQ_VBI_ENABLE);
- }
+ status = VIA_READ(VIA_REG_INTERRUPT);
+ VIA_WRITE(VIA_REG_INTERRUPT, status & ~VIA_IRQ_VBI_ENABLE);
+ }
}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 02:16:57 +0000