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| author | Takashi Iwai <tiwai@suse.de> | 2021-08-09 16:05:32 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-08-09 16:06:17 +0200 |
| commit | ca4c5b334f1036d567b6a7d1f695430d7e4fd8a3 (patch) | |
| tree | fa32ffcfc72d7cc685135338855a2e7c8a985826 /sound/isa | |
| parent | 4d9e9153f1c64d91a125c6967bc0bfb0bb653ea0 (diff) | |
| download | linux-ca4c5b334f1036d567b6a7d1f695430d7e4fd8a3.tar.bz2 | |
ALSA: msnd: Use proper mmap method
The old ISA MSND driver basically maps the iomem as the DMA buffer.
For this type of buffer, we have already the standard mmap helper,
snd_pcm_lib_mmap_iomem(). Correct the PCM info, set the DMA address
and use the standard helper for handling the mmap on all architectures
properly.
Link: https://lore.kernel.org/r/20210809140532.11006-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/isa')
| -rw-r--r-- | sound/isa/msnd/msnd.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sound/isa/msnd/msnd.c b/sound/isa/msnd/msnd.c index 4fbc22a5bc5a..c3fd1eb301bb 100644 --- a/sound/isa/msnd/msnd.c +++ b/sound/isa/msnd/msnd.c @@ -425,7 +425,7 @@ static void snd_msnd_capture_reset_queue(struct snd_msnd *chip, } static const struct snd_pcm_hardware snd_msnd_playback = { - .info = SNDRV_PCM_INFO_MMAP | + .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BATCH, @@ -444,7 +444,7 @@ static const struct snd_pcm_hardware snd_msnd_playback = { }; static const struct snd_pcm_hardware snd_msnd_capture = { - .info = SNDRV_PCM_INFO_MMAP | + .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BATCH, @@ -473,6 +473,7 @@ static int snd_msnd_playback_open(struct snd_pcm_substream *substream) snd_msnd_enable_irq(chip); runtime->dma_area = (__force void *)chip->mappedbase; + runtime->dma_addr = chip->base; runtime->dma_bytes = 0x3000; chip->playback_substream = substream; @@ -566,6 +567,7 @@ static const struct snd_pcm_ops snd_msnd_playback_ops = { .prepare = snd_msnd_playback_prepare, .trigger = snd_msnd_playback_trigger, .pointer = snd_msnd_playback_pointer, + .mmap = snd_pcm_lib_mmap_iomem, }; static int snd_msnd_capture_open(struct snd_pcm_substream *substream) @@ -576,6 +578,7 @@ static int snd_msnd_capture_open(struct snd_pcm_substream *substream) set_bit(F_AUDIO_READ_INUSE, &chip->flags); snd_msnd_enable_irq(chip); runtime->dma_area = (__force void *)chip->mappedbase + 0x3000; + runtime->dma_addr = chip->base + 0x3000; runtime->dma_bytes = 0x3000; memset(runtime->dma_area, 0, runtime->dma_bytes); chip->capture_substream = substream; @@ -662,6 +665,7 @@ static const struct snd_pcm_ops snd_msnd_capture_ops = { .prepare = snd_msnd_capture_prepare, .trigger = snd_msnd_capture_trigger, .pointer = snd_msnd_capture_pointer, + .mmap = snd_pcm_lib_mmap_iomem, }; |