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authorClemens Ladisch <clemens@ladisch.de>2011-01-10 16:09:23 +0100
committerTakashi Iwai <tiwai@suse.de>2011-01-10 16:46:21 +0100
commit00b8dd7dd71ef129176731d5fa24f5e298797599 (patch)
treea3cb8cef9a89f6a0b55490adab58ae257a05a294
parentd353eaa9a8133cdad8c1da23c84f9f529a23f0c2 (diff)
ALSA: virtuoso: use lower master clock with H6 daughterboard
Because of the unshielded connector cable, it is important to use as low a master clock frequency as possible with the H6. For double rate modes (64-96 kHz), the MCLK rate is unconditionally lowered from 512x to 256x because the higher rate would not improve anything. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/pci/oxygen/xonar_pcm179x.c31
1 files changed, 18 insertions, 13 deletions
diff --git a/sound/pci/oxygen/xonar_pcm179x.c b/sound/pci/oxygen/xonar_pcm179x.c
index fce55fa5b0b0..2a50a55cbbb1 100644
--- a/sound/pci/oxygen/xonar_pcm179x.c
+++ b/sound/pci/oxygen/xonar_pcm179x.c
@@ -224,6 +224,7 @@ struct xonar_pcm179x {
u8 pcm1796_regs[4][5];
unsigned int current_rate;
bool os_128;
+ bool h6;
bool hp_active;
s8 hp_gain_offset;
bool has_cs2000;
@@ -384,6 +385,7 @@ static void xonar_hdav_init(struct oxygen *chip)
data->pcm179x.generic.ext_power_int_reg = OXYGEN_GPI_INTERRUPT_MASK;
data->pcm179x.generic.ext_power_bit = GPI_EXT_POWER;
data->pcm179x.dacs = chip->model.dac_channels_mixer / 2;
+ data->pcm179x.h6 = chip->model.dac_channels_mixer > 2;
pcm1796_init(chip);
@@ -461,6 +463,7 @@ static void xonar_st_init(struct oxygen *chip)
struct xonar_pcm179x *data = chip->model_data;
data->generic.anti_pop_delay = 100;
+ data->h6 = chip->model.dac_channels_mixer > 2;
data->has_cs2000 = 1;
data->cs2000_regs[CS2000_FUN_CFG_1] = CS2000_REF_CLK_DIV_1;
data->broken_i2c = true;
@@ -554,11 +557,10 @@ static unsigned int mclk_from_rate(struct oxygen *chip, unsigned int rate)
struct xonar_pcm179x *data = chip->model_data;
if (rate <= 32000)
- return OXYGEN_I2S_MCLK_512;
- else if (rate <= 48000 && data->os_128)
- return OXYGEN_I2S_MCLK_512;
- else if (rate <= 96000)
- return OXYGEN_I2S_MCLK_256;
+ return data->h6 ? OXYGEN_I2S_MCLK_256 : OXYGEN_I2S_MCLK_512;
+ else if (rate <= 48000)
+ return data->os_128 && !data->h6
+ ? OXYGEN_I2S_MCLK_512 : OXYGEN_I2S_MCLK_256;
else
return OXYGEN_I2S_MCLK_128;
}
@@ -579,9 +581,9 @@ static void update_pcm1796_oversampling(struct oxygen *chip)
unsigned int i;
u8 reg;
- if (data->current_rate <= 32000)
+ if (data->current_rate <= 32000 && !data->h6)
reg = PCM1796_OS_128;
- else if (data->current_rate <= 48000 && data->os_128)
+ else if (data->current_rate <= 48000 && data->os_128 && !data->h6)
reg = PCM1796_OS_128;
else if (data->current_rate <= 96000 || data->os_128)
reg = PCM1796_OS_64;
@@ -636,28 +638,31 @@ static void update_cs2000_rate(struct oxygen *chip, unsigned int rate)
switch (rate) {
case 32000:
- rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_512;
+ if (data->h6)
+ rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_256;
+ else
+ rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_512;
break;
case 44100:
- if (data->os_128)
+ if (data->os_128 && !data->h6)
rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_512;
else
rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_256;
break;
default: /* 48000 */
- if (data->os_128)
+ if (data->os_128 && !data->h6)
rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_512;
else
rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_256;
break;
case 64000:
- rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_512;
+ rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_256;
break;
case 88200:
- rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_512;
+ rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_256;
break;
case 96000:
- rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_512;
+ rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_256;
break;
case 176400:
rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_512;