From 5b8f7f7329289fa3b74ef8cdbaa9d2929787d3e6 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 3 Aug 2005 14:02:47 +0200 Subject: [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 --- include/sound/ad1816a.h | 1 + sound/isa/ad1816a/ad1816a.c | 5 +++++ sound/isa/ad1816a/ad1816a_lib.c | 14 ++++++++++---- 3 files changed, 16 insertions(+), 4 deletions(-) diff --git a/include/sound/ad1816a.h b/include/sound/ad1816a.h index 395978e375c..ca2e0e4fa93 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 563296d0289..0eb442ca23d 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 625b2eff14a..ae860360ecf 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, -- cgit v1.2.3-70-g09d2