#include <linux/slab.h>
#include <linux/time.h>
#include <linux/wait.h>
-#include <linux/moduleparam.h>
#include <linux/module.h>
#include <sound/driver.h>
#include <sound/core.h>
if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
handled = 1;
- saa_writel(SAA7134_IRQ_REPORT,report);
+ saa_writel(SAA7134_IRQ_REPORT,
+ SAA7134_IRQ_REPORT_DONE_RA3);
saa7134_irq_alsa_done(dev, status);
} else {
goto out;
dev->dmasound.blksize = 0;
dev->dmasound.bufsize = 0;
- return 0;
+ return 0;
}
.buffer_bytes_max = (256*1024),
.period_bytes_min = 64,
.period_bytes_max = (256*1024),
- .periods_min = 2,
+ .periods_min = 4,
.periods_max = 1024,
};
snd_assert(period_size >= 0x100 && period_size <= 0x10000,
return -EINVAL);
- snd_assert(periods >= 2, return -EINVAL);
+ snd_assert(periods >= 4, return -EINVAL);
snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL);
dev = saa7134->dev;
V4L functions, and force ALSA to use that as the DMA area */
substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
+ substream->runtime->dma_bytes = dev->dmasound.bufsize;
+ substream->runtime->dma_addr = 0;
- return 1;
+ return 0;
}
saa7134_tvaudio_setmute(dev);
}
- if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
+ err = snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS);
+ if (err < 0)
+ return err;
+
+ err = snd_pcm_hw_constraint_step(runtime, 0,
+ SNDRV_PCM_HW_PARAM_PERIODS, 2);
+ if (err < 0)
return err;
return 0;
}
+/*
+ * page callback (needed for mmap)
+ */
+
+static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
+ unsigned long offset)
+{
+ void *pageptr = substream->runtime->dma_area + offset;
+ return vmalloc_to_page(pageptr);
+}
+
/*
* ALSA capture callbacks definition
*/
.prepare = snd_card_saa7134_capture_prepare,
.trigger = snd_card_saa7134_capture_trigger,
.pointer = snd_card_saa7134_capture_pointer,
+ .page = snd_card_saa7134_page,
};
/*
struct saa7134_dev *dev = NULL;
struct list_head *list;
- if (!saa7134_dmasound_init && !saa7134_dmasound_exit) {
- saa7134_dmasound_init = alsa_device_init;
- saa7134_dmasound_exit = alsa_device_exit;
- } else {
- printk(KERN_WARNING "saa7134 ALSA: can't load, DMA sound handler already assigned (probably to OSS)\n");
- return -EBUSY;
- }
+ saa7134_dmasound_init = alsa_device_init;
+ saa7134_dmasound_exit = alsa_device_exit;
printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
list_for_each(list,&saa7134_devlist) {
dev = list_entry(list, struct saa7134_dev, devlist);
- if (dev->dmasound.priv_data == NULL) {
- alsa_device_init(dev);
- } else {
- printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name);
- return -EBUSY;
- }
+ alsa_device_init(dev);
}
if (dev == NULL)