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authorTakashi Iwai <tiwai@suse.de>2005-08-03 14:02:47 +0200
committerJaroslav Kysela <perex@suse.cz>2005-08-30 08:43:43 +0200
commit5b8f7f7329289fa3b74ef8cdbaa9d2929787d3e6 (patch)
treea90354362cd044d3ef6b2e272eb73124b973e3f3
parent[ALSA] use PCM interface for IEC958 controls (diff)
downloadlinux-dev-5b8f7f7329289fa3b74ef8cdbaa9d2929787d3e6.tar.xz
linux-dev-5b8f7f7329289fa3b74ef8cdbaa9d2929787d3e6.zip
[ALSA] ad1816a - Add clockfreq module option
Documentation,AD1816A driver Added clockfreq module option for the card with a different clock frequency than 33kHz. Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--include/sound/ad1816a.h1
-rw-r--r--sound/isa/ad1816a/ad1816a.c5
-rw-r--r--sound/isa/ad1816a/ad1816a_lib.c14
3 files changed, 16 insertions, 4 deletions
diff --git a/include/sound/ad1816a.h b/include/sound/ad1816a.h
index 395978e375cf..ca2e0e4fa937 100644
--- a/include/sound/ad1816a.h
+++ b/include/sound/ad1816a.h
@@ -138,6 +138,7 @@ struct _snd_ad1816a {
spinlock_t lock;
unsigned short mode;
+ unsigned int clock_freq;
snd_card_t *card;
snd_pcm_t *pcm;
diff --git a/sound/isa/ad1816a/ad1816a.c b/sound/isa/ad1816a/ad1816a.c
index 563296d02894..0eb442ca23d6 100644
--- a/sound/isa/ad1816a/ad1816a.c
+++ b/sound/isa/ad1816a/ad1816a.c
@@ -53,6 +53,7 @@ static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* Pnp setup */
static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* Pnp setup */
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* PnP setup */
static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* PnP setup */
+static int clockfreq[SNDRV_CARDS];
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for ad1816a based soundcard.");
@@ -74,6 +75,8 @@ module_param_array(dma1, int, NULL, 0444);
MODULE_PARM_DESC(dma1, "1st DMA # for ad1816a driver.");
module_param_array(dma2, int, NULL, 0444);
MODULE_PARM_DESC(dma2, "2nd DMA # for ad1816a driver.");
+module_param_array(clockfreq, int, NULL, 0444);
+MODULE_PARM_DESC(clockfreq, "Clock frequency for ad1816a driver (default = 0).");
struct snd_card_ad1816a {
struct pnp_dev *dev;
@@ -209,6 +212,8 @@ static int __devinit snd_card_ad1816a_probe(int dev, struct pnp_card_link *pcard
snd_card_free(card);
return error;
}
+ if (clockfreq[dev] >= 5000 && clockfreq[dev] <= 100000)
+ chip->clock_freq = clockfreq[dev];
strcpy(card->driver, "AD1816A");
strcpy(card->shortname, "ADI SoundPort AD1816A");
diff --git a/sound/isa/ad1816a/ad1816a_lib.c b/sound/isa/ad1816a/ad1816a_lib.c
index 625b2eff14a1..ae860360ecf9 100644
--- a/sound/isa/ad1816a/ad1816a_lib.c
+++ b/sound/isa/ad1816a/ad1816a_lib.c
@@ -234,7 +234,7 @@ static int snd_ad1816a_playback_prepare(snd_pcm_substream_t *substream)
ad1816a_t *chip = snd_pcm_substream_chip(substream);
unsigned long flags;
snd_pcm_runtime_t *runtime = substream->runtime;
- unsigned int size;
+ unsigned int size, rate;
spin_lock_irqsave(&chip->lock, flags);
@@ -245,7 +245,10 @@ static int snd_ad1816a_playback_prepare(snd_pcm_substream_t *substream)
snd_dma_program(chip->dma1, runtime->dma_addr, size,
DMA_MODE_WRITE | DMA_AUTOINIT);
- snd_ad1816a_write(chip, AD1816A_PLAYBACK_SAMPLE_RATE, runtime->rate);
+ rate = runtime->rate;
+ if (chip->clock_freq)
+ rate = (rate * 33000) / chip->clock_freq;
+ snd_ad1816a_write(chip, AD1816A_PLAYBACK_SAMPLE_RATE, rate);
snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
snd_ad1816a_get_format(chip, runtime->format,
@@ -263,7 +266,7 @@ static int snd_ad1816a_capture_prepare(snd_pcm_substream_t *substream)
ad1816a_t *chip = snd_pcm_substream_chip(substream);
unsigned long flags;
snd_pcm_runtime_t *runtime = substream->runtime;
- unsigned int size;
+ unsigned int size, rate;
spin_lock_irqsave(&chip->lock, flags);
@@ -274,7 +277,10 @@ static int snd_ad1816a_capture_prepare(snd_pcm_substream_t *substream)
snd_dma_program(chip->dma2, runtime->dma_addr, size,
DMA_MODE_READ | DMA_AUTOINIT);
- snd_ad1816a_write(chip, AD1816A_CAPTURE_SAMPLE_RATE, runtime->rate);
+ rate = runtime->rate;
+ if (chip->clock_freq)
+ rate = (rate * 33000) / chip->clock_freq;
+ snd_ad1816a_write(chip, AD1816A_CAPTURE_SAMPLE_RATE, rate);
snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
snd_ad1816a_get_format(chip, runtime->format,