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authorKrzysztof Helt <krzysztof.h1@wp.pl>2009-01-16 22:47:30 +0100
committerTakashi Iwai <tiwai@suse.de>2009-01-17 12:02:21 +0100
commit9ef344f89ac41116d4ab138b0941c784a3ab8cf4 (patch)
treee34c9c9cbb4d450d3acb0fa42070ae1d37625e2d /sound/isa/wss/wss_lib.c
parent554b91edec1c588b889a7357ff201c0a450e31ff (diff)
downloadlinux-stericsson-9ef344f89ac41116d4ab138b0941c784a3ab8cf4.tar.gz
ALSA: wss-lib: remove "pops" before each played sound
A WSS codec is autocalibrated each time before playing sound. Do only one calibration during codec initialization. Complete snd_wss_calibrate_mute to mute loopback volume as well. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/isa/wss/wss_lib.c')
-rw-r--r--sound/isa/wss/wss_lib.c41
1 files changed, 13 insertions, 28 deletions
diff --git a/sound/isa/wss/wss_lib.c b/sound/isa/wss/wss_lib.c
index 13299aebd077..f0c0be5bb684 100644
--- a/sound/isa/wss/wss_lib.c
+++ b/sound/isa/wss/wss_lib.c
@@ -181,25 +181,6 @@ static void snd_wss_wait(struct snd_wss *chip)
udelay(100);
}
-static void snd_wss_outm(struct snd_wss *chip, unsigned char reg,
- unsigned char mask, unsigned char value)
-{
- unsigned char tmp = (chip->image[reg] & mask) | value;
-
- snd_wss_wait(chip);
-#ifdef CONFIG_SND_DEBUG
- if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
- snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
-#endif
- chip->image[reg] = tmp;
- if (!chip->calibrate_mute) {
- wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
- wmb();
- wss_outb(chip, CS4231P(REG), tmp);
- mb();
- }
-}
-
static void snd_wss_dout(struct snd_wss *chip, unsigned char reg,
unsigned char value)
{
@@ -587,7 +568,15 @@ static void snd_wss_calibrate_mute(struct snd_wss *chip, int mute)
chip->image[CS4231_RIGHT_INPUT]);
snd_wss_dout(chip, CS4231_LOOPBACK,
chip->image[CS4231_LOOPBACK]);
+ } else {
+ snd_wss_dout(chip, CS4231_LEFT_INPUT,
+ 0);
+ snd_wss_dout(chip, CS4231_RIGHT_INPUT,
+ 0);
+ snd_wss_dout(chip, CS4231_LOOPBACK,
+ 0xfd);
}
+
snd_wss_dout(chip, CS4231_AUX1_LEFT_INPUT,
mute | chip->image[CS4231_AUX1_LEFT_INPUT]);
snd_wss_dout(chip, CS4231_AUX1_RIGHT_INPUT,
@@ -630,7 +619,6 @@ static void snd_wss_playback_format(struct snd_wss *chip,
int full_calib = 1;
mutex_lock(&chip->mce_mutex);
- snd_wss_calibrate_mute(chip, 1);
if (chip->hardware == WSS_HW_CS4231A ||
(chip->hardware & WSS_HW_CS4232_MASK)) {
spin_lock_irqsave(&chip->reg_lock, flags);
@@ -681,7 +669,6 @@ static void snd_wss_playback_format(struct snd_wss *chip,
udelay(100); /* this seems to help */
snd_wss_mce_down(chip);
}
- snd_wss_calibrate_mute(chip, 0);
mutex_unlock(&chip->mce_mutex);
}
@@ -693,7 +680,6 @@ static void snd_wss_capture_format(struct snd_wss *chip,
int full_calib = 1;
mutex_lock(&chip->mce_mutex);
- snd_wss_calibrate_mute(chip, 1);
if (chip->hardware == WSS_HW_CS4231A ||
(chip->hardware & WSS_HW_CS4232_MASK)) {
spin_lock_irqsave(&chip->reg_lock, flags);
@@ -750,7 +736,6 @@ static void snd_wss_capture_format(struct snd_wss *chip,
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_wss_mce_down(chip);
}
- snd_wss_calibrate_mute(chip, 0);
mutex_unlock(&chip->mce_mutex);
}
@@ -807,6 +792,7 @@ static void snd_wss_init(struct snd_wss *chip)
{
unsigned long flags;
+ snd_wss_calibrate_mute(chip, 1);
snd_wss_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
@@ -830,6 +816,8 @@ static void snd_wss_init(struct snd_wss *chip)
snd_wss_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
+ chip->image[CS4231_IFACE_CTRL] &= ~CS4231_AUTOCALIB;
+ snd_wss_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
snd_wss_out(chip,
CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
@@ -863,6 +851,7 @@ static void snd_wss_init(struct snd_wss *chip)
chip->image[CS4231_REC_FORMAT]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_wss_mce_down(chip);
+ snd_wss_calibrate_mute(chip, 0);
#ifdef SNDRV_DEBUG_MCE
snd_printk("init: (5)\n");
@@ -921,8 +910,6 @@ static void snd_wss_close(struct snd_wss *chip, unsigned int mode)
mutex_unlock(&chip->open_mutex);
return;
}
- snd_wss_calibrate_mute(chip, 1);
-
/* disable IRQ */
spin_lock_irqsave(&chip->reg_lock, flags);
if (!(chip->hardware & WSS_HW_AD1848_MASK))
@@ -955,8 +942,6 @@ static void snd_wss_close(struct snd_wss *chip, unsigned int mode)
wss_outb(chip, CS4231P(STATUS), 0); /* clear IRQ */
spin_unlock_irqrestore(&chip->reg_lock, flags);
- snd_wss_calibrate_mute(chip, 0);
-
chip->mode = 0;
mutex_unlock(&chip->open_mutex);
}
@@ -1149,7 +1134,7 @@ irqreturn_t snd_wss_interrupt(int irq, void *dev_id)
if (chip->hardware & WSS_HW_AD1848_MASK)
wss_outb(chip, CS4231P(STATUS), 0);
else
- snd_wss_outm(chip, CS4231_IRQ_STATUS, status, 0);
+ snd_wss_out(chip, CS4231_IRQ_STATUS, status);
spin_unlock(&chip->reg_lock);
return IRQ_HANDLED;
}