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| author | Eric Hustvedt <ehustvedt@cecropia.com> | 2006-06-20 14:36:41 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@linux.ie> | 2006-07-03 18:59:46 +1000 |
| commit | 7649757bd900bc900adcd95ab08903cdc28342fa (patch) | |
| tree | 4c710d9e458ff3c6731180aca738123886f7adec /drivers/video/intelfb/intelfb.h | |
| parent | 9a5f019b1a9ea6a75ba36d7c312ff069006ed479 (diff) | |
| download | kernel_samsung_smdk4412-7649757bd900bc900adcd95ab08903cdc28342fa.zip kernel_samsung_smdk4412-7649757bd900bc900adcd95ab08903cdc28342fa.tar.gz kernel_samsung_smdk4412-7649757bd900bc900adcd95ab08903cdc28342fa.tar.bz2 | |
intelfb: add vsync interrupt support
[03/05] intelfb: Implement basic interrupt handling
Functions have been added to enable and disable interrupts using the MMIO registers. Currently only pipe A vsync interrupts are enabled.
A generalized vsync accounting struct is defined, with the intent that it can encapsulate per-pipe vsync related info in the future. Currently a single instance is hard-coded.
The interrupt service routine currently only looks for vsync interrupts on pipe A, and increments a counter and wakes up anyone waiting on it.
This implementation is heavily influenced by similar implementations in the atyfb and matroxfb drivers.
Signed-off-by: Eric Hustvedt <ehustvedt@cecropia.com>
Diffstat (limited to 'drivers/video/intelfb/intelfb.h')
| -rw-r--r-- | drivers/video/intelfb/intelfb.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/video/intelfb/intelfb.h b/drivers/video/intelfb/intelfb.h index cb016fe..dab1f2d 100644 --- a/drivers/video/intelfb/intelfb.h +++ b/drivers/video/intelfb/intelfb.h @@ -208,6 +208,11 @@ struct intelfb_heap_data { u32 size; // in bytes }; +struct intelfb_vsync { + wait_queue_head_t wait; + unsigned int count; +}; + struct intelfb_info { struct fb_info *info; struct fb_ops *fbops; @@ -271,6 +276,12 @@ struct intelfb_info { int fixed_mode; int ring_active; int flag; + unsigned long irq_flags; + int open; + + /* vsync */ + struct intelfb_vsync vsync; + spinlock_t int_lock; /* hw cursor */ int cursor_on; |