ALSA: virtuoso: wait for PCM1796 clock to become stable
The PCM1796 needs the master clock for I2C communication to work, so
add delays after clock changes to ensure that the clock is stable when
we try to write the DACs' registers.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/oxygen/xonar_pcm179x.c b/sound/pci/oxygen/xonar_pcm179x.c
index 49898d3..5ec164a 100644
--- a/sound/pci/oxygen/xonar_pcm179x.c
+++ b/sound/pci/oxygen/xonar_pcm179x.c
@@ -303,6 +303,7 @@
unsigned int i;
s8 gain_offset;
+ msleep(1);
gain_offset = data->hp_active ? data->hp_gain_offset : 0;
for (i = 0; i < data->dacs; ++i) {
/* set ATLD before ATL/ATR */
@@ -451,6 +452,7 @@
data->cs2000_regs[CS2000_FUN_CFG_1]);
cs2000_write(chip, CS2000_FUN_CFG_2, 0);
cs2000_write(chip, CS2000_GLOBAL_CFG, CS2000_EN_DEV_CFG_2);
+ msleep(3); /* PLL lock delay */
}
static void xonar_st_init(struct oxygen *chip)
@@ -592,6 +594,7 @@
{
struct xonar_pcm179x *data = chip->model_data;
+ msleep(1);
data->current_rate = params_rate(params);
update_pcm1796_oversampling(chip);
}
@@ -669,6 +672,7 @@
else
reg = CS2000_REF_CLK_DIV_2;
cs2000_write_cached(chip, CS2000_FUN_CFG_1, reg);
+ msleep(3); /* PLL lock delay */
}
static void set_st_params(struct oxygen *chip,
@@ -796,6 +800,7 @@
oxygen_write16_masked(chip, OXYGEN_I2S_MULTICH_FORMAT,
mclk_from_rate(chip, data->current_rate),
OXYGEN_I2S_MCLK_MASK);
+ msleep(1);
update_pcm1796_oversampling(chip);
}
mutex_unlock(&chip->mutex);