hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ALSA: sh: Convert to the new PCM ops 

Replace the copy and the silence ops with the new PCM ops.
Fixed also the user-space buffer copy with the proper
copy_from_user*() variant.

Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2017-05-10 21:57:16 +02:00
parent 4b83eff81c
commit 1cc2f8ba0b
1 changed files with 30 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
sound/sh/sh_dac_audio.c
View File

@ -184,23 +184,36 @@ static int snd_sh_dac_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
return 0;
}
static int snd_sh_dac_pcm_copy(struct snd_pcm_substream *substream, int channel,
snd_pcm_uframes_t pos, void __user *src, snd_pcm_uframes_t count)
static int snd_sh_dac_pcm_copy(struct snd_pcm_substream *substream,
int channel, unsigned long pos,
void __user *src, unsigned long count)
{
/* channel is not used (interleaved data) */
struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
ssize_t b_count = frames_to_bytes(runtime , count);
ssize_t b_pos = frames_to_bytes(runtime , pos);
if (count < 0)
return -EINVAL;
if (copy_from_user_toio(chip->data_buffer + pos, src, count))
return -EFAULT;
chip->buffer_end = chip->data_buffer + pos + count;
if (chip->empty) {
chip->empty = 0;
dac_audio_start_timer(chip);
}
if (!count)
return 0;
}
memcpy_toio(chip->data_buffer + b_pos, src, b_count);
chip->buffer_end = chip->data_buffer + b_pos + b_count;
static int snd_sh_dac_pcm_copy_kernel(struct snd_pcm_substream *substream,
int channel, unsigned long pos,
void *src, unsigned long count)
{
/* channel is not used (interleaved data) */
struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
memcpy_toio(chip->data_buffer + pos, src, count);
chip->buffer_end = chip->data_buffer + pos + count;
if (chip->empty) {
chip->empty = 0;
@ -211,23 +224,15 @@ static int snd_sh_dac_pcm_copy(struct snd_pcm_substream *substream, int channel,
}
static int snd_sh_dac_pcm_silence(struct snd_pcm_substream *substream,
int channel, snd_pcm_uframes_t pos,
snd_pcm_uframes_t count)
int channel, unsigned long pos,
unsigned long count)
{
/* channel is not used (interleaved data) */
struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
ssize_t b_count = frames_to_bytes(runtime , count);
ssize_t b_pos = frames_to_bytes(runtime , pos);
if (count < 0)
return -EINVAL;
if (!count)
return 0;
memset_io(chip->data_buffer + b_pos, 0, b_count);
chip->buffer_end = chip->data_buffer + b_pos + b_count;
memset_io(chip->data_buffer + pos, 0, count);
chip->buffer_end = chip->data_buffer + pos + count;
if (chip->empty) {
chip->empty = 0;
@ -256,8 +261,9 @@ static struct snd_pcm_ops snd_sh_dac_pcm_ops = {
.prepare = snd_sh_dac_pcm_prepare,
.trigger = snd_sh_dac_pcm_trigger,
.pointer = snd_sh_dac_pcm_pointer,
.copy = snd_sh_dac_pcm_copy,
.silence = snd_sh_dac_pcm_silence,
.copy_user = snd_sh_dac_pcm_copy,
.copy_kernel = snd_sh_dac_pcm_copy_kernel,
.fill_silence = snd_sh_dac_pcm_silence,
.mmap = snd_pcm_lib_mmap_iomem,
};