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Diffstat (limited to 'sound/isa/gus/gus_pcm.c')
-rw-r--r--sound/isa/gus/gus_pcm.c122
1 files changed, 69 insertions, 53 deletions
diff --git a/sound/isa/gus/gus_pcm.c b/sound/isa/gus/gus_pcm.c
index 06505999155f..6b3da01a93b7 100644
--- a/sound/isa/gus/gus_pcm.c
+++ b/sound/isa/gus/gus_pcm.c
@@ -61,8 +61,6 @@ struct gus_pcm_private {
int final_volume;
};
-static int snd_gf1_pcm_use_dma = 1;
-
static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
{
struct gus_pcm_private *pcmp = private_data;
@@ -355,66 +353,83 @@ static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
return 0;
}
-static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
- int voice,
- snd_pcm_uframes_t pos,
- void __user *src,
- snd_pcm_uframes_t count)
+static int get_bpos(struct gus_pcm_private *pcmp, int voice, unsigned int pos,
+ unsigned int len)
{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct gus_pcm_private *pcmp = runtime->private_data;
- unsigned int bpos, len;
-
- bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
- len = samples_to_bytes(runtime, count);
+ unsigned int bpos = pos + (voice * (pcmp->dma_size / 2));
if (snd_BUG_ON(bpos > pcmp->dma_size))
return -EIO;
if (snd_BUG_ON(bpos + len > pcmp->dma_size))
return -EIO;
+ return bpos;
+}
+
+static int playback_copy_ack(struct snd_pcm_substream *substream,
+ unsigned int bpos, unsigned int len)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ struct snd_gus_card *gus = pcmp->gus;
+ int w16, invert;
+
+ if (len > 32)
+ return snd_gf1_pcm_block_change(substream, bpos,
+ pcmp->memory + bpos, len);
+
+ w16 = (snd_pcm_format_width(runtime->format) == 16);
+ invert = snd_pcm_format_unsigned(runtime->format);
+ return snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos,
+ pcmp->memory + bpos, len, w16, invert);
+}
+
+static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
+ int voice, unsigned long pos,
+ void __user *src, unsigned long count)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ unsigned int len = count;
+ int bpos;
+
+ bpos = get_bpos(pcmp, voice, pos, len);
+ if (bpos < 0)
+ return pos;
if (copy_from_user(runtime->dma_area + bpos, src, len))
return -EFAULT;
- if (snd_gf1_pcm_use_dma && len > 32) {
- return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
- } else {
- struct snd_gus_card *gus = pcmp->gus;
- int err, w16, invert;
+ return playback_copy_ack(substream, bpos, len);
+}
- w16 = (snd_pcm_format_width(runtime->format) == 16);
- invert = snd_pcm_format_unsigned(runtime->format);
- if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
- return err;
- }
- return 0;
+static int snd_gf1_pcm_playback_copy_kernel(struct snd_pcm_substream *substream,
+ int voice, unsigned long pos,
+ void *src, unsigned long count)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ unsigned int len = count;
+ int bpos;
+
+ bpos = get_bpos(pcmp, voice, pos, len);
+ if (bpos < 0)
+ return pos;
+ memcpy(runtime->dma_area + bpos, src, len);
+ return playback_copy_ack(substream, bpos, len);
}
static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
- int voice,
- snd_pcm_uframes_t pos,
- snd_pcm_uframes_t count)
+ int voice, unsigned long pos,
+ unsigned long count)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct gus_pcm_private *pcmp = runtime->private_data;
- unsigned int bpos, len;
+ unsigned int len = count;
+ int bpos;
- bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
- len = samples_to_bytes(runtime, count);
- if (snd_BUG_ON(bpos > pcmp->dma_size))
- return -EIO;
- if (snd_BUG_ON(bpos + len > pcmp->dma_size))
- return -EIO;
- snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
- if (snd_gf1_pcm_use_dma && len > 32) {
- return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
- } else {
- struct snd_gus_card *gus = pcmp->gus;
- int err, w16, invert;
-
- w16 = (snd_pcm_format_width(runtime->format) == 16);
- invert = snd_pcm_format_unsigned(runtime->format);
- if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
- return err;
- }
- return 0;
+ bpos = get_bpos(pcmp, voice, pos, len);
+ if (bpos < 0)
+ return pos;
+ snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos,
+ bytes_to_samples(runtime, count));
+ return playback_copy_ack(substream, bpos, len);
}
static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
@@ -547,14 +562,14 @@ static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *
return pos;
}
-static struct snd_ratnum clock = {
+static const struct snd_ratnum clock = {
.num = 9878400/16,
.den_min = 2,
.den_max = 257,
.den_step = 1,
};
-static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
+static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
.nrats = 1,
.rats = &clock,
};
@@ -809,7 +824,7 @@ static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_
return change;
}
-static struct snd_kcontrol_new snd_gf1_pcm_volume_control =
+static const struct snd_kcontrol_new snd_gf1_pcm_volume_control =
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "PCM Playback Volume",
@@ -818,7 +833,7 @@ static struct snd_kcontrol_new snd_gf1_pcm_volume_control =
.put = snd_gf1_pcm_volume_put
};
-static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
+static const struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "GPCM Playback Volume",
@@ -836,8 +851,9 @@ static struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
.prepare = snd_gf1_pcm_playback_prepare,
.trigger = snd_gf1_pcm_playback_trigger,
.pointer = snd_gf1_pcm_playback_pointer,
- .copy = snd_gf1_pcm_playback_copy,
- .silence = snd_gf1_pcm_playback_silence,
+ .copy_user = snd_gf1_pcm_playback_copy,
+ .copy_kernel = snd_gf1_pcm_playback_copy_kernel,
+ .fill_silence = snd_gf1_pcm_playback_silence,
};
static struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
generated by cgit (git 2.34.1) at 2024-05-09 00:12:41 +0000