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authorKrzysztof Helt <krzysztof.h1@wp.pl>2007-09-06 15:03:59 +0200
committerJaroslav Kysela <perex@perex.cz>2007-10-16 16:49:10 +0200
commit6c041b5eae5a3e5c950c1d99f59d907c680922d2 (patch)
treeefcea2e397a3c2807f15042d9227d61d46335074 /sound/isa/cs423x
parent8e6a2c2ec9e7c99128425e6b73bea8437efd3a93 (diff)
downloadlinux-6c041b5eae5a3e5c950c1d99f59d907c680922d2.tar.gz
[ALSA] cs4231-lib: replace common delay loop by function
This patch replaces a common delay loop by a function. It also uses ARRAY_SIZE macro for the rates table. Acked-by: Rene Herman <rene.herman@gmail.com> Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/isa/cs423x')
-rw-r--r--sound/isa/cs423x/cs4231_lib.c50
1 files changed, 20 insertions, 30 deletions
diff --git a/sound/isa/cs423x/cs4231_lib.c b/sound/isa/cs423x/cs4231_lib.c
index 642bdaa703b..db9bba130b2 100644
--- a/sound/isa/cs423x/cs4231_lib.c
+++ b/sound/isa/cs423x/cs4231_lib.c
@@ -74,7 +74,7 @@ static unsigned int rates[14] = {
};
static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
- .count = 14,
+ .count = ARRAY_SIZE(rates),
.list = rates,
.mask = 0,
};
@@ -134,29 +134,31 @@ static inline u8 cs4231_inb(struct snd_cs4231 *chip, u8 offset)
return inb(chip->port + offset);
}
-static void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
- unsigned char mask, unsigned char value)
+static void snd_cs4231_wait(struct snd_cs4231 *chip)
{
int timeout;
- unsigned char tmp;
for (timeout = 250;
timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
timeout--)
udelay(100);
+}
+
+static void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
+ unsigned char mask, unsigned char value)
+{
+ unsigned char tmp = (chip->image[reg] & mask) | value;
+
+ snd_cs4231_wait(chip);
#ifdef CONFIG_SND_DEBUG
if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
#endif
- if (chip->calibrate_mute) {
- chip->image[reg] &= mask;
- chip->image[reg] |= value;
- } else {
+ chip->image[reg] = tmp;
+ if (!chip->calibrate_mute) {
cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
- mb();
- tmp = (chip->image[reg] & mask) | value;
+ wmb();
cs4231_outb(chip, CS4231P(REG), tmp);
- chip->image[reg] = tmp;
mb();
}
}
@@ -176,12 +178,7 @@ static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg, unsigned
void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
{
- int timeout;
-
- for (timeout = 250;
- timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
- timeout--)
- udelay(100);
+ snd_cs4231_wait(chip);
#ifdef CONFIG_SND_DEBUG
if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
snd_printk("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
@@ -190,19 +187,13 @@ void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char va
cs4231_outb(chip, CS4231P(REG), value);
chip->image[reg] = value;
mb();
-#if 0
- printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
-#endif
+ snd_printdd("codec out - reg 0x%x = 0x%x\n",
+ chip->mce_bit | reg, value);
}
unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
{
- int timeout;
-
- for (timeout = 250;
- timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
- timeout--)
- udelay(100);
+ snd_cs4231_wait(chip);
#ifdef CONFIG_SND_DEBUG
if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
snd_printk("in: auto calibration time out - reg = 0x%x\n", reg);
@@ -304,8 +295,7 @@ void snd_cs4231_mce_up(struct snd_cs4231 *chip)
unsigned long flags;
int timeout;
- for (timeout = 250; timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT); timeout--)
- udelay(100);
+ snd_cs4231_wait(chip);
#ifdef CONFIG_SND_DEBUG
if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
snd_printk("mce_up - auto calibration time out (0)\n");
@@ -459,11 +449,11 @@ static unsigned char snd_cs4231_get_rate(unsigned int rate)
{
int i;
- for (i = 0; i < 14; i++)
+ for (i = 0; i < ARRAY_SIZE(rates); i++)
if (rate == rates[i])
return freq_bits[i];
// snd_BUG();
- return freq_bits[13];
+ return freq_bits[ARRAY_SIZE(rates) - 1];
}
static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip,