diff options
| author | Andy Walls <awalls@radix.net> | 2008-10-31 20:49:12 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-11-11 08:11:28 -0200 |
| commit | f056d29eebd2c8800cf42528ba0470c77a928821 (patch) | |
| tree | ec57c96e5b7b95ef2597c572f6c90dfa0a40581f /drivers/media/video/cx18/cx18-io.h | |
| parent | 58ae1c23184772a7b2d02a4a82f5515a7820a155 (diff) | |
V4L/DVB (9510): cx18: Fix write retries for registers that always change - part 2.
cx18: Fix write retries for registers that always change - part 2.
Some registers, especially interrupt related ones, will never read
back the value just written. Modified interrupt register readback
checks to make sure the intended effect was achieved.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18/cx18-io.h')
| -rw-r--r-- | drivers/media/video/cx18/cx18-io.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/media/video/cx18/cx18-io.h b/drivers/media/video/cx18/cx18-io.h index 287a5e8bf67..425244453ea 100644 --- a/drivers/media/video/cx18/cx18-io.h +++ b/drivers/media/video/cx18/cx18-io.h @@ -133,6 +133,8 @@ static inline void cx18_writel(struct cx18 *cx, u32 val, void __iomem *addr) cx18_writel_noretry(cx, val, addr); } +void _cx18_writel_expect(struct cx18 *cx, u32 val, void __iomem *addr, + u32 eval, u32 mask); static inline void cx18_writew_noretry(struct cx18 *cx, u16 val, void __iomem *addr) @@ -271,6 +273,21 @@ static inline void cx18_write_reg(struct cx18 *cx, u32 val, u32 reg) cx18_write_reg_noretry(cx, val, reg); } +static inline void _cx18_write_reg_expect(struct cx18 *cx, u32 val, u32 reg, + u32 eval, u32 mask) +{ + _cx18_writel_expect(cx, val, cx->reg_mem + reg, eval, mask); +} + +static inline void cx18_write_reg_expect(struct cx18 *cx, u32 val, u32 reg, + u32 eval, u32 mask) +{ + if (cx18_retry_mmio) + _cx18_write_reg_expect(cx, val, reg, eval, mask); + else + cx18_write_reg_noretry(cx, val, reg); +} + static inline u32 cx18_read_reg_noretry(struct cx18 *cx, u32 reg) { |