drm: add support for secondary vertical blank interrupt to DRM core
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/drm.h b/drivers/char/drm/drm.h
index 5642ac4..077d0b1 100644
--- a/drivers/char/drm/drm.h
+++ b/drivers/char/drm/drm.h
@@ -465,10 +465,12 @@
typedef enum {
_DRM_VBLANK_ABSOLUTE = 0x0, /**< Wait for specific vblank sequence number */
_DRM_VBLANK_RELATIVE = 0x1, /**< Wait for given number of vblanks */
+ _DRM_VBLANK_SECONDARY = 0x20000000, /**< Secondary display controller */
_DRM_VBLANK_SIGNAL = 0x40000000 /**< Send signal instead of blocking */
} drm_vblank_seq_type_t;
-#define _DRM_VBLANK_FLAGS_MASK _DRM_VBLANK_SIGNAL
+#define _DRM_VBLANK_TYPES_MASK (_DRM_VBLANK_ABSOLUTE | _DRM_VBLANK_RELATIVE)
+#define _DRM_VBLANK_FLAGS_MASK (_DRM_VBLANK_SIGNAL | _DRM_VBLANK_SECONDARY)
struct drm_wait_vblank_request {
drm_vblank_seq_type_t type;
diff --git a/drivers/char/drm/drmP.h b/drivers/char/drm/drmP.h
index 7690a59..d7135d4 100644
--- a/drivers/char/drm/drmP.h
+++ b/drivers/char/drm/drmP.h
@@ -97,6 +97,7 @@
#define DRIVER_IRQ_VBL 0x100
#define DRIVER_DMA_QUEUE 0x200
#define DRIVER_FB_DMA 0x400
+#define DRIVER_IRQ_VBL2 0x800
/***********************************************************************/
/** \name Begin the DRM... */
@@ -562,6 +563,7 @@
void (*kernel_context_switch_unlock) (struct drm_device * dev,
drm_lock_t *lock);
int (*vblank_wait) (struct drm_device * dev, unsigned int *sequence);
+ int (*vblank_wait2) (struct drm_device * dev, unsigned int *sequence);
int (*dri_library_name) (struct drm_device *dev, char *buf);
/**
@@ -708,8 +710,10 @@
wait_queue_head_t vbl_queue; /**< VBLANK wait queue */
atomic_t vbl_received;
+ atomic_t vbl_received2; /**< number of secondary VBLANK interrupts */
spinlock_t vbl_lock;
drm_vbl_sig_t vbl_sigs; /**< signal list to send on VBLANK */
+ drm_vbl_sig_t vbl_sigs2; /**< signals to send on secondary VBLANK */
unsigned int vbl_pending;
/*@} */
diff --git a/drivers/char/drm/drm_core.h b/drivers/char/drm/drm_core.h
index f4f9db6c..3167390 100644
--- a/drivers/char/drm/drm_core.h
+++ b/drivers/char/drm/drm_core.h
@@ -24,11 +24,11 @@
#define CORE_NAME "drm"
#define CORE_DESC "DRM shared core routines"
-#define CORE_DATE "20051102"
+#define CORE_DATE "20060810"
#define DRM_IF_MAJOR 1
-#define DRM_IF_MINOR 2
+#define DRM_IF_MINOR 3
#define CORE_MAJOR 1
-#define CORE_MINOR 0
-#define CORE_PATCHLEVEL 1
+#define CORE_MINOR 1
+#define CORE_PATCHLEVEL 0
diff --git a/drivers/char/drm/drm_irq.c b/drivers/char/drm/drm_irq.c
index 4553a3a..3c77756 100644
--- a/drivers/char/drm/drm_irq.c
+++ b/drivers/char/drm/drm_irq.c
@@ -121,6 +121,7 @@
spin_lock_init(&dev->vbl_lock);
INIT_LIST_HEAD(&dev->vbl_sigs.head);
+ INIT_LIST_HEAD(&dev->vbl_sigs2.head);
dev->vbl_pending = 0;
}
@@ -248,9 +249,7 @@
struct timeval now;
int ret = 0;
unsigned int flags;
-
- if (!drm_core_check_feature(dev, DRIVER_IRQ_VBL))
- return -EINVAL;
+ atomic_t *seq;
if (!dev->irq)
return -EINVAL;
@@ -258,9 +257,26 @@
if (copy_from_user(&vblwait, argp, sizeof(vblwait)))
return -EFAULT;
- switch (vblwait.request.type & ~_DRM_VBLANK_FLAGS_MASK) {
+ if (vblwait.request.type &
+ ~(_DRM_VBLANK_TYPES_MASK | _DRM_VBLANK_FLAGS_MASK)) {
+ DRM_ERROR("Unsupported type value 0x%x, supported mask 0x%x\n",
+ vblwait.request.type,
+ (_DRM_VBLANK_TYPES_MASK | _DRM_VBLANK_FLAGS_MASK));
+ return -EINVAL;
+ }
+
+ flags = vblwait.request.type & _DRM_VBLANK_FLAGS_MASK;
+
+ if (!drm_core_check_feature(dev, (flags & _DRM_VBLANK_SECONDARY) ?
+ DRIVER_IRQ_VBL2 : DRIVER_IRQ_VBL))
+ return -EINVAL;
+
+ seq = (flags & _DRM_VBLANK_SECONDARY) ? &dev->vbl_received2 :
+ &dev->vbl_received;
+
+ switch (vblwait.request.type & _DRM_VBLANK_TYPES_MASK) {
case _DRM_VBLANK_RELATIVE:
- vblwait.request.sequence += atomic_read(&dev->vbl_received);
+ vblwait.request.sequence += atomic_read(seq);
vblwait.request.type &= ~_DRM_VBLANK_RELATIVE;
case _DRM_VBLANK_ABSOLUTE:
break;
@@ -268,13 +284,13 @@
return -EINVAL;
}
- flags = vblwait.request.type & _DRM_VBLANK_FLAGS_MASK;
-
if (flags & _DRM_VBLANK_SIGNAL) {
unsigned long irqflags;
+ drm_vbl_sig_t *vbl_sigs = (flags & _DRM_VBLANK_SECONDARY)
+ ? &dev->vbl_sigs2 : &dev->vbl_sigs;
drm_vbl_sig_t *vbl_sig;
- vblwait.reply.sequence = atomic_read(&dev->vbl_received);
+ vblwait.reply.sequence = atomic_read(seq);
spin_lock_irqsave(&dev->vbl_lock, irqflags);
@@ -282,7 +298,7 @@
* for the same vblank sequence number; nothing to be done in
* that case
*/
- list_for_each_entry(vbl_sig, &dev->vbl_sigs.head, head) {
+ list_for_each_entry(vbl_sig, &vbl_sigs->head, head) {
if (vbl_sig->sequence == vblwait.request.sequence
&& vbl_sig->info.si_signo == vblwait.request.signal
&& vbl_sig->task == current) {
@@ -315,11 +331,14 @@
spin_lock_irqsave(&dev->vbl_lock, irqflags);
- list_add_tail((struct list_head *)vbl_sig, &dev->vbl_sigs.head);
+ list_add_tail((struct list_head *)vbl_sig, &vbl_sigs->head);
spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
} else {
- if (dev->driver->vblank_wait)
+ if (flags & _DRM_VBLANK_SECONDARY) {
+ if (dev->driver->vblank_wait2)
+ ret = dev->driver->vblank_wait2(dev, &vblwait.request.sequence);
+ } else if (dev->driver->vblank_wait)
ret =
dev->driver->vblank_wait(dev,
&vblwait.request.sequence);
@@ -347,25 +366,32 @@
*/
void drm_vbl_send_signals(drm_device_t * dev)
{
- struct list_head *list, *tmp;
- drm_vbl_sig_t *vbl_sig;
- unsigned int vbl_seq = atomic_read(&dev->vbl_received);
unsigned long flags;
+ int i;
spin_lock_irqsave(&dev->vbl_lock, flags);
- list_for_each_safe(list, tmp, &dev->vbl_sigs.head) {
- vbl_sig = list_entry(list, drm_vbl_sig_t, head);
- if ((vbl_seq - vbl_sig->sequence) <= (1 << 23)) {
- vbl_sig->info.si_code = vbl_seq;
- send_sig_info(vbl_sig->info.si_signo, &vbl_sig->info,
- vbl_sig->task);
+ for (i = 0; i < 2; i++) {
+ struct list_head *list, *tmp;
+ drm_vbl_sig_t *vbl_sig;
+ drm_vbl_sig_t *vbl_sigs = i ? &dev->vbl_sigs2 : &dev->vbl_sigs;
+ unsigned int vbl_seq = atomic_read(i ? &dev->vbl_received2 :
+ &dev->vbl_received);
- list_del(list);
+ list_for_each_safe(list, tmp, &vbl_sigs->head) {
+ vbl_sig = list_entry(list, drm_vbl_sig_t, head);
+ if ((vbl_seq - vbl_sig->sequence) <= (1 << 23)) {
+ vbl_sig->info.si_code = vbl_seq;
+ send_sig_info(vbl_sig->info.si_signo,
+ &vbl_sig->info, vbl_sig->task);
- drm_free(vbl_sig, sizeof(*vbl_sig), DRM_MEM_DRIVER);
+ list_del(list);
- dev->vbl_pending--;
+ drm_free(vbl_sig, sizeof(*vbl_sig),
+ DRM_MEM_DRIVER);
+
+ dev->vbl_pending--;
+ }
}
}