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authorTakashi Iwai <tiwai@suse.de>2023-08-15 22:01:33 +0300
committerTakashi Iwai <tiwai@suse.de>2023-08-18 13:19:18 +0300
commit9bebd65443c1379f6643397bf4854d6f80a8358c (patch)
tree64ad74dc398ef939b5f45c4bab9250e4064bd93d
parent56b00d10ffd4dcd6b068c2290ffabf0ae2d49789 (diff)
downloadlinux-9bebd65443c1379f6643397bf4854d6f80a8358c.tar.xz
ASoC: dmaengine: Use iov_iter for process callback, too
Along with the conversion to PCM copy ops, use the iov_iter for the pointer to be passed to the dmaengine process callback, too. It avoids the direct reference of iter_iov_addr(), and it can potentially help for the drivers to access memory properly (although both atmel and stm drivers don't use the given buffer address at all for now). Reviewed-by: Mark Brown <broonie@kernel.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Claudiu Beznea <claudiu.beznea@microchip.com> Cc: Olivier Moysan <olivier.moysan@foss.st.com> Cc: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> Link: https://lore.kernel.org/r/20230815190136.8987-23-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--include/sound/dmaengine_pcm.h2
-rw-r--r--sound/soc/atmel/mchp-pdmc.c2
-rw-r--r--sound/soc/soc-generic-dmaengine-pcm.c5
-rw-r--r--sound/soc/stm/stm32_sai_sub.c2
4 files changed, 5 insertions, 6 deletions
diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h
index 2df54cf02cb3..c9a8bce9a785 100644
--- a/include/sound/dmaengine_pcm.h
+++ b/include/sound/dmaengine_pcm.h
@@ -142,7 +142,7 @@ struct snd_dmaengine_pcm_config {
struct snd_pcm_substream *substream);
int (*process)(struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
- void *buf, unsigned long bytes);
+ struct iov_iter *buf, unsigned long bytes);
dma_filter_fn compat_filter_fn;
struct device *dma_dev;
const char *chan_names[SNDRV_PCM_STREAM_LAST + 1];
diff --git a/sound/soc/atmel/mchp-pdmc.c b/sound/soc/atmel/mchp-pdmc.c
index 1a069f4cdcda..911bc334b41e 100644
--- a/sound/soc/atmel/mchp-pdmc.c
+++ b/sound/soc/atmel/mchp-pdmc.c
@@ -954,7 +954,7 @@ static int mchp_pdmc_dt_init(struct mchp_pdmc *dd)
/* used to clean the channel index found on RHR's MSB */
static int mchp_pdmc_process(struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
- void *buf, unsigned long bytes)
+ struct iov_iter *buf, unsigned long bytes)
{
struct snd_pcm_runtime *runtime = substream->runtime;
u8 *dma_ptr = runtime->dma_area + hwoff +
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index f2cb75781566..ff2166525dbc 100644
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -296,18 +296,17 @@ static int dmaengine_copy(struct snd_soc_component *component,
struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
int (*process)(struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
- void *buf, unsigned long bytes) = pcm->config->process;
+ struct iov_iter *buf, unsigned long bytes) = pcm->config->process;
bool is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
void *dma_ptr = runtime->dma_area + hwoff +
channel * (runtime->dma_bytes / runtime->channels);
- void *ptr = (void __force *)iter_iov_addr(buf);
if (is_playback)
if (copy_from_iter(dma_ptr, bytes, buf) != bytes)
return -EFAULT;
if (process) {
- int ret = process(substream, channel, hwoff, ptr, bytes);
+ int ret = process(substream, channel, hwoff, buf, bytes);
if (ret < 0)
return ret;
}
diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
index 271ec5b3378d..39f9b4654fa2 100644
--- a/sound/soc/stm/stm32_sai_sub.c
+++ b/sound/soc/stm/stm32_sai_sub.c
@@ -1233,7 +1233,7 @@ static const struct snd_soc_dai_ops stm32_sai_pcm_dai_ops = {
static int stm32_sai_pcm_process_spdif(struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
- void *buf, unsigned long bytes)
+ struct iov_iter *buf, unsigned long bytes)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);