From 8d3c3456efe683debd81b7a17171bbb41019ec61 Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Sun, 2 Nov 2008 08:59:04 -0500 Subject: cx18: Fix write retries for registers that always change - part 3. From: Andy Walls cx18: Fix write retries for registers that always change - part 3. Fix the io for the rest of the registers that will often not read back the value just written. Modified register readback checks to make sure the intended effect was achieved without constantly rewriting the registers. The one outstanding register remaining is 0xc72014 CX18_AUDIO_ENABLE, whose behavior on writes I have yet to determine. Priority: normal Signed-off-by: Andy Walls --- linux/drivers/media/video/cx18/cx18-av-core.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'linux/drivers/media/video/cx18/cx18-av-core.h') diff --git a/linux/drivers/media/video/cx18/cx18-av-core.h b/linux/drivers/media/video/cx18/cx18-av-core.h index b67d8df20..a07988c6f 100644 --- a/linux/drivers/media/video/cx18/cx18-av-core.h +++ b/linux/drivers/media/video/cx18/cx18-av-core.h @@ -302,6 +302,9 @@ struct cx18_av_state { int cx18_av_write(struct cx18 *cx, u16 addr, u8 value); int cx18_av_write4(struct cx18 *cx, u16 addr, u32 value); int cx18_av_write4_noretry(struct cx18 *cx, u16 addr, u32 value); +int cx18_av_write_expect(struct cx18 *cx, u16 addr, u8 value, u8 eval, u8 mask); +int cx18_av_write4_expect(struct cx18 *cx, u16 addr, u32 value, u32 eval, + u32 mask); u8 cx18_av_read(struct cx18 *cx, u16 addr); u32 cx18_av_read4(struct cx18 *cx, u16 addr); u32 cx18_av_read4_noretry(struct cx18 *cx, u16 addr); -- cgit v1.2.3