diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2013-03-11 07:47:25 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-03-24 16:10:18 +0100 |
| commit | 1589037f8716a605a36ee6dda6f7cdd4d043522b (patch) | |
| tree | 00f6593d07cea0e5879ebb70c0242add78966134 /drivers/media/i2c/saa7115.c | |
| parent | [media] saa7115: improve querystd handling for the saa7115 (diff) | |
| download | linux-1589037f8716a605a36ee6dda6f7cdd4d043522b.tar.xz linux-1589037f8716a605a36ee6dda6f7cdd4d043522b.zip | |
[media] saa7115: add support for double-rate ASCLK
Some devices expect a double rate ASCLK. Add a flag to let the driver know
through the s_crystal_freq call.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/i2c/saa7115.c')
| -rw-r--r-- | drivers/media/i2c/saa7115.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/media/i2c/saa7115.c b/drivers/media/i2c/saa7115.c index cdff1f6e8546..52c717d977c9 100644 --- a/drivers/media/i2c/saa7115.c +++ b/drivers/media/i2c/saa7115.c @@ -83,9 +83,10 @@ struct saa711x_state { u32 ident; u32 audclk_freq; u32 crystal_freq; - u8 ucgc; + bool ucgc; u8 cgcdiv; - u8 apll; + bool apll; + bool double_asclk; }; static inline struct saa711x_state *to_state(struct v4l2_subdev *sd) @@ -732,8 +733,12 @@ static int saa711x_s_clock_freq(struct v4l2_subdev *sd, u32 freq) if (state->apll) acc |= 0x08; + if (state->double_asclk) { + acpf <<= 1; + acni <<= 1; + } saa711x_write(sd, R_38_CLK_RATIO_AMXCLK_TO_ASCLK, 0x03); - saa711x_write(sd, R_39_CLK_RATIO_ASCLK_TO_ALRCLK, 0x10); + saa711x_write(sd, R_39_CLK_RATIO_ASCLK_TO_ALRCLK, 0x10 << state->double_asclk); saa711x_write(sd, R_3A_AUD_CLK_GEN_BASIC_SETUP, acc); saa711x_write(sd, R_30_AUD_MAST_CLK_CYCLES_PER_FIELD, acpf & 0xff); @@ -1302,9 +1307,10 @@ static int saa711x_s_crystal_freq(struct v4l2_subdev *sd, u32 freq, u32 flags) if (freq != SAA7115_FREQ_32_11_MHZ && freq != SAA7115_FREQ_24_576_MHZ) return -EINVAL; state->crystal_freq = freq; + state->double_asclk = flags & SAA7115_FREQ_FL_DOUBLE_ASCLK; state->cgcdiv = (flags & SAA7115_FREQ_FL_CGCDIV) ? 3 : 4; - state->ucgc = (flags & SAA7115_FREQ_FL_UCGC) ? 1 : 0; - state->apll = (flags & SAA7115_FREQ_FL_APLL) ? 1 : 0; + state->ucgc = flags & SAA7115_FREQ_FL_UCGC; + state->apll = flags & SAA7115_FREQ_FL_APLL; saa711x_s_clock_freq(sd, state->audclk_freq); return 0; } |