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path: root/drivers/gpu/drm/via/via_irq.c
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Diffstat (limited to 'drivers/gpu/drm/via/via_irq.c')
-rw-r--r--drivers/gpu/drm/via/via_irq.c105
1 files changed, 59 insertions, 46 deletions
diff --git a/drivers/gpu/drm/via/via_irq.c b/drivers/gpu/drm/via/via_irq.c
index c6bb978a1106..665d319b927b 100644
--- a/drivers/gpu/drm/via/via_irq.c
+++ b/drivers/gpu/drm/via/via_irq.c
@@ -43,7 +43,7 @@
#define VIA_REG_INTERRUPT 0x200
/* VIA_REG_INTERRUPT */
-#define VIA_IRQ_GLOBAL (1 << 31)
+#define VIA_IRQ_GLOBAL (1 << 31)
#define VIA_IRQ_VBLANK_ENABLE (1 << 19)
#define VIA_IRQ_VBLANK_PENDING (1 << 3)
#define VIA_IRQ_HQV0_ENABLE (1 << 11)
@@ -68,16 +68,15 @@
static maskarray_t via_pro_group_a_irqs[] = {
{VIA_IRQ_HQV0_ENABLE, VIA_IRQ_HQV0_PENDING, 0x000003D0, 0x00008010,
- 0x00000000},
+ 0x00000000 },
{VIA_IRQ_HQV1_ENABLE, VIA_IRQ_HQV1_PENDING, 0x000013D0, 0x00008010,
- 0x00000000},
+ 0x00000000 },
{VIA_IRQ_DMA0_TD_ENABLE, VIA_IRQ_DMA0_TD_PENDING, VIA_PCI_DMA_CSR0,
VIA_DMA_CSR_TA | VIA_DMA_CSR_TD, 0x00000008},
{VIA_IRQ_DMA1_TD_ENABLE, VIA_IRQ_DMA1_TD_PENDING, VIA_PCI_DMA_CSR1,
VIA_DMA_CSR_TA | VIA_DMA_CSR_TD, 0x00000008},
};
-static int via_num_pro_group_a =
- sizeof(via_pro_group_a_irqs) / sizeof(maskarray_t);
+static int via_num_pro_group_a = ARRAY_SIZE(via_pro_group_a_irqs);
static int via_irqmap_pro_group_a[] = {0, 1, -1, 2, -1, 3};
static maskarray_t via_unichrome_irqs[] = {
@@ -86,14 +85,24 @@ static maskarray_t via_unichrome_irqs[] = {
{VIA_IRQ_DMA1_TD_ENABLE, VIA_IRQ_DMA1_TD_PENDING, VIA_PCI_DMA_CSR1,
VIA_DMA_CSR_TA | VIA_DMA_CSR_TD, 0x00000008}
};
-static int via_num_unichrome = sizeof(via_unichrome_irqs) / sizeof(maskarray_t);
+static int via_num_unichrome = ARRAY_SIZE(via_unichrome_irqs);
static int via_irqmap_unichrome[] = {-1, -1, -1, 0, -1, 1};
+
static unsigned time_diff(struct timeval *now, struct timeval *then)
{
return (now->tv_usec >= then->tv_usec) ?
- now->tv_usec - then->tv_usec :
- 1000000 - (then->tv_usec - now->tv_usec);
+ now->tv_usec - then->tv_usec :
+ 1000000 - (then->tv_usec - now->tv_usec);
+}
+
+u32 via_get_vblank_counter(struct drm_device *dev, int crtc)
+{
+ drm_via_private_t *dev_priv = dev->dev_private;
+ if (crtc != 0)
+ return 0;
+
+ return atomic_read(&dev_priv->vbl_received);
}
irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
@@ -108,23 +117,22 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
status = VIA_READ(VIA_REG_INTERRUPT);
if (status & VIA_IRQ_VBLANK_PENDING) {
- atomic_inc(&dev->vbl_received);
- if (!(atomic_read(&dev->vbl_received) & 0x0F)) {
+ atomic_inc(&dev_priv->vbl_received);
+ if (!(atomic_read(&dev_priv->vbl_received) & 0x0F)) {
do_gettimeofday(&cur_vblank);
if (dev_priv->last_vblank_valid) {
dev_priv->usec_per_vblank =
- time_diff(&cur_vblank,
- &dev_priv->last_vblank) >> 4;
+ time_diff(&cur_vblank,
+ &dev_priv->last_vblank) >> 4;
}
dev_priv->last_vblank = cur_vblank;
dev_priv->last_vblank_valid = 1;
}
- if (!(atomic_read(&dev->vbl_received) & 0xFF)) {
+ if (!(atomic_read(&dev_priv->vbl_received) & 0xFF)) {
DRM_DEBUG("US per vblank is: %u\n",
dev_priv->usec_per_vblank);
}
- DRM_WAKEUP(&dev->vbl_queue);
- drm_vbl_send_signals(dev);
+ drm_handle_vblank(dev, 0);
handled = 1;
}
@@ -145,6 +153,7 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
/* Acknowlege interrupts */
VIA_WRITE(VIA_REG_INTERRUPT, status);
+
if (handled)
return IRQ_HANDLED;
else
@@ -163,31 +172,34 @@ static __inline__ void viadrv_acknowledge_irqs(drm_via_private_t * dev_priv)
}
}
-int via_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence)
+int via_enable_vblank(struct drm_device *dev, int crtc)
{
- drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
- unsigned int cur_vblank;
- int ret = 0;
+ drm_via_private_t *dev_priv = dev->dev_private;
+ u32 status;
- DRM_DEBUG("\n");
- if (!dev_priv) {
- DRM_ERROR("called with no initialization\n");
+ if (crtc != 0) {
+ DRM_ERROR("%s: bad crtc %d\n", __func__, crtc);
return -EINVAL;
}
- viadrv_acknowledge_irqs(dev_priv);
+ status = VIA_READ(VIA_REG_INTERRUPT);
+ VIA_WRITE(VIA_REG_INTERRUPT, status & VIA_IRQ_VBLANK_ENABLE);
+
+ VIA_WRITE8(0x83d4, 0x11);
+ VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
- /* 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...
- */
+ return 0;
+}
+
+void via_disable_vblank(struct drm_device *dev, int crtc)
+{
+ drm_via_private_t *dev_priv = dev->dev_private;
- DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
- (((cur_vblank = atomic_read(&dev->vbl_received)) -
- *sequence) <= (1 << 23)));
+ VIA_WRITE8(0x83d4, 0x11);
+ VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) & ~0x30);
- *sequence = cur_vblank;
- return ret;
+ if (crtc != 0)
+ DRM_ERROR("%s: bad crtc %d\n", __func__, crtc);
}
static int
@@ -239,6 +251,7 @@ via_driver_irq_wait(struct drm_device * dev, unsigned int irq, int force_sequenc
return ret;
}
+
/*
* drm_dma.h hooks
*/
@@ -292,23 +305,25 @@ void via_driver_irq_preinstall(struct drm_device * dev)
}
}
-void via_driver_irq_postinstall(struct drm_device * dev)
+int via_driver_irq_postinstall(struct drm_device *dev)
{
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
u32 status;
- DRM_DEBUG("\n");
- if (dev_priv) {
- status = VIA_READ(VIA_REG_INTERRUPT);
- VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
- | dev_priv->irq_enable_mask);
+ DRM_DEBUG("via_driver_irq_postinstall\n");
+ if (!dev_priv)
+ return -EINVAL;
- /* Some magic, oh for some data sheets ! */
+ drm_vblank_init(dev, 1);
+ status = VIA_READ(VIA_REG_INTERRUPT);
+ VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
+ | dev_priv->irq_enable_mask);
- VIA_WRITE8(0x83d4, 0x11);
- VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
+ /* Some magic, oh for some data sheets ! */
+ VIA_WRITE8(0x83d4, 0x11);
+ VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
- }
+ return 0;
}
void via_driver_irq_uninstall(struct drm_device * dev)
@@ -339,9 +354,6 @@ int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv)
drm_via_irq_t *cur_irq = dev_priv->via_irqs;
int force_sequence;
- if (!dev->irq)
- return -EINVAL;
-
if (irqwait->request.irq >= dev_priv->num_irqs) {
DRM_ERROR("Trying to wait on unknown irq %d\n",
irqwait->request.irq);
@@ -352,7 +364,8 @@ int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv)
switch (irqwait->request.type & ~VIA_IRQ_FLAGS_MASK) {
case VIA_IRQ_RELATIVE:
- irqwait->request.sequence += atomic_read(&cur_irq->irq_received);
+ irqwait->request.sequence +=
+ atomic_read(&cur_irq->irq_received);
irqwait->request.type &= ~_DRM_VBLANK_RELATIVE;
case VIA_IRQ_ABSOLUTE:
break;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.