[ALSA] pcm: add snd_pcm_rate_to_rate_bit() helper
Add a snd_pcm_rate_to_rate_bit() function to factor out common code used
by several drivers.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/bt87x.c b/sound/pci/bt87x.c
index f0e1298..85d50b6 100644
--- a/sound/pci/bt87x.c
+++ b/sound/pci/bt87x.c
@@ -340,28 +340,9 @@
static int snd_bt87x_set_digital_hw(struct snd_bt87x *chip, struct snd_pcm_runtime *runtime)
{
- static struct {
- int rate;
- unsigned int bit;
- } ratebits[] = {
- {8000, SNDRV_PCM_RATE_8000},
- {11025, SNDRV_PCM_RATE_11025},
- {16000, SNDRV_PCM_RATE_16000},
- {22050, SNDRV_PCM_RATE_22050},
- {32000, SNDRV_PCM_RATE_32000},
- {44100, SNDRV_PCM_RATE_44100},
- {48000, SNDRV_PCM_RATE_48000}
- };
- int i;
-
chip->reg_control |= CTL_DA_IOM_DA;
runtime->hw = snd_bt87x_digital_hw;
- runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
- for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
- if (chip->dig_rate == ratebits[i].rate) {
- runtime->hw.rates = ratebits[i].bit;
- break;
- }
+ runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->dig_rate);
runtime->hw.rate_min = chip->dig_rate;
runtime->hw.rate_max = chip->dig_rate;
return 0;
diff --git a/sound/pci/rme32.c b/sound/pci/rme32.c
index ee0189b..1475912 100644
--- a/sound/pci/rme32.c
+++ b/sound/pci/rme32.c
@@ -258,19 +258,6 @@
& RME32_RCR_AUDIO_ADDR_MASK);
}
-static int snd_rme32_ratecode(int rate)
-{
- switch (rate) {
- case 32000: return SNDRV_PCM_RATE_32000;
- case 44100: return SNDRV_PCM_RATE_44100;
- case 48000: return SNDRV_PCM_RATE_48000;
- case 64000: return SNDRV_PCM_RATE_64000;
- case 88200: return SNDRV_PCM_RATE_88200;
- case 96000: return SNDRV_PCM_RATE_96000;
- }
- return 0;
-}
-
/* silence callback for halfduplex mode */
static int snd_rme32_playback_silence(struct snd_pcm_substream *substream, int channel, /* not used (interleaved data) */
snd_pcm_uframes_t pos,
@@ -887,7 +874,7 @@
if ((rme32->rcreg & RME32_RCR_KMODE) &&
(rate = snd_rme32_capture_getrate(rme32, &dummy)) > 0) {
/* AutoSync */
- runtime->hw.rates = snd_rme32_ratecode(rate);
+ runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}
@@ -929,7 +916,7 @@
if (isadat) {
return -EIO;
}
- runtime->hw.rates = snd_rme32_ratecode(rate);
+ runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}
@@ -965,7 +952,7 @@
if ((rme32->rcreg & RME32_RCR_KMODE) &&
(rate = snd_rme32_capture_getrate(rme32, &dummy)) > 0) {
/* AutoSync */
- runtime->hw.rates = snd_rme32_ratecode(rate);
+ runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}
@@ -989,7 +976,7 @@
if (!isadat) {
return -EIO;
}
- runtime->hw.rates = snd_rme32_ratecode(rate);
+ runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}
diff --git a/sound/pci/rme96.c b/sound/pci/rme96.c
index ba4a34b..0b3c532 100644
--- a/sound/pci/rme96.c
+++ b/sound/pci/rme96.c
@@ -301,20 +301,6 @@
}
static int
-snd_rme96_ratecode(int rate)
-{
- switch (rate) {
- case 32000: return SNDRV_PCM_RATE_32000;
- case 44100: return SNDRV_PCM_RATE_44100;
- case 48000: return SNDRV_PCM_RATE_48000;
- case 64000: return SNDRV_PCM_RATE_64000;
- case 88200: return SNDRV_PCM_RATE_88200;
- case 96000: return SNDRV_PCM_RATE_96000;
- }
- return 0;
-}
-
-static int
snd_rme96_playback_silence(struct snd_pcm_substream *substream,
int channel, /* not used (interleaved data) */
snd_pcm_uframes_t pos,
@@ -1192,7 +1178,7 @@
(rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
{
/* slave clock */
- runtime->hw.rates = snd_rme96_ratecode(rate);
+ runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}
@@ -1219,7 +1205,7 @@
if (isadat) {
return -EIO;
}
- runtime->hw.rates = snd_rme96_ratecode(rate);
+ runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}
@@ -1259,7 +1245,7 @@
(rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
{
/* slave clock */
- runtime->hw.rates = snd_rme96_ratecode(rate);
+ runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}
@@ -1284,7 +1270,7 @@
if (!isadat) {
return -EIO;
}
- runtime->hw.rates = snd_rme96_ratecode(rate);
+ runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}