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authorTakashi Iwai <tiwai@suse.de>2014-09-10 14:01:05 +0200
committerTakashi Iwai <tiwai@suse.de>2014-09-15 15:52:10 +0200
commit6336c20cdaee1dd13d01dfa8c07ce3b18bbc846f (patch)
treec974b279979eadaa0ace3768d7e231a59f62f3bd /sound/pci/lx6464es/lx_core.c
parent9bef72bdb26e291d6dffb04768741a0e49582666 (diff)
downloadlinux-stericsson-6336c20cdaee1dd13d01dfa8c07ce3b18bbc846f.tar.gz
ALSA: lx6464es: Use nonatomic PCM ops
Like the other previous changes, this patch for lx6464es takes the same strategy for converting to nonatomic PCM ops: replacing spinlock with mutex, converting the irq tasklet to the threaded irq, and merging the trigger tasklets back to the trigger callback. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/lx6464es/lx_core.c')
-rw-r--r--sound/pci/lx6464es/lx_core.c252
1 files changed, 90 insertions, 162 deletions
diff --git a/sound/pci/lx6464es/lx_core.c b/sound/pci/lx6464es/lx_core.c
index e8f38e5df10a..f3d62020ef66 100644
--- a/sound/pci/lx6464es/lx_core.c
+++ b/sound/pci/lx6464es/lx_core.c
@@ -332,27 +332,25 @@ polling_successful:
int lx_dsp_get_version(struct lx6464es *chip, u32 *rdsp_version)
{
u16 ret;
- unsigned long flags;
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_01_GET_SYS_CFG);
ret = lx_message_send_atomic(chip, &chip->rmh);
*rdsp_version = chip->rmh.stat[1];
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return ret;
}
int lx_dsp_get_clock_frequency(struct lx6464es *chip, u32 *rfreq)
{
u16 ret = 0;
- unsigned long flags;
u32 freq_raw = 0;
u32 freq = 0;
u32 frequency = 0;
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_01_GET_SYS_CFG);
ret = lx_message_send_atomic(chip, &chip->rmh);
@@ -370,7 +368,7 @@ int lx_dsp_get_clock_frequency(struct lx6464es *chip, u32 *rfreq)
frequency = 48000;
}
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
*rfreq = frequency * chip->freq_ratio;
@@ -398,25 +396,23 @@ int lx_dsp_get_mac(struct lx6464es *chip)
int lx_dsp_set_granularity(struct lx6464es *chip, u32 gran)
{
- unsigned long flags;
int ret;
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_02_SET_GRANULARITY);
chip->rmh.cmd[0] |= gran;
ret = lx_message_send_atomic(chip, &chip->rmh);
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return ret;
}
int lx_dsp_read_async_events(struct lx6464es *chip, u32 *data)
{
- unsigned long flags;
int ret;
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_04_GET_EVENT);
chip->rmh.stat_len = 9; /* we don't necessarily need the full length */
@@ -426,7 +422,7 @@ int lx_dsp_read_async_events(struct lx6464es *chip, u32 *data)
if (!ret)
memcpy(data, chip->rmh.stat, chip->rmh.stat_len * sizeof(u32));
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return ret;
}
@@ -440,18 +436,16 @@ int lx_pipe_allocate(struct lx6464es *chip, u32 pipe, int is_capture,
int channels)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_06_ALLOCATE_PIPE);
chip->rmh.cmd[0] |= pipe_cmd;
chip->rmh.cmd[0] |= channels;
err = lx_message_send_atomic(chip, &chip->rmh);
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
if (err != 0)
dev_err(chip->card->dev, "could not allocate pipe\n");
@@ -462,17 +456,15 @@ int lx_pipe_allocate(struct lx6464es *chip, u32 pipe, int is_capture,
int lx_pipe_release(struct lx6464es *chip, u32 pipe, int is_capture)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_07_RELEASE_PIPE);
chip->rmh.cmd[0] |= pipe_cmd;
err = lx_message_send_atomic(chip, &chip->rmh);
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -481,8 +473,6 @@ int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture,
u32 *r_needed, u32 *r_freed, u32 *size_array)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
#ifdef CONFIG_SND_DEBUG
@@ -493,7 +483,7 @@ int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture,
*r_needed = 0;
*r_freed = 0;
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_08_ASK_BUFFERS);
chip->rmh.cmd[0] |= pipe_cmd;
@@ -527,7 +517,7 @@ int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture,
}
}
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -535,36 +525,32 @@ int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture,
int lx_pipe_stop(struct lx6464es *chip, u32 pipe, int is_capture)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_09_STOP_PIPE);
chip->rmh.cmd[0] |= pipe_cmd;
err = lx_message_send_atomic(chip, &chip->rmh);
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
static int lx_pipe_toggle_state(struct lx6464es *chip, u32 pipe, int is_capture)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_0B_TOGGLE_PIPE_STATE);
chip->rmh.cmd[0] |= pipe_cmd;
err = lx_message_send_atomic(chip, &chip->rmh);
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -600,11 +586,9 @@ int lx_pipe_sample_count(struct lx6464es *chip, u32 pipe, int is_capture,
u64 *rsample_count)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_0A_GET_PIPE_SPL_COUNT);
chip->rmh.cmd[0] |= pipe_cmd;
@@ -621,18 +605,16 @@ int lx_pipe_sample_count(struct lx6464es *chip, u32 pipe, int is_capture,
+ chip->rmh.stat[1]; /* lo part */
}
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
int lx_pipe_state(struct lx6464es *chip, u32 pipe, int is_capture, u16 *rstate)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_0A_GET_PIPE_SPL_COUNT);
chip->rmh.cmd[0] |= pipe_cmd;
@@ -644,7 +626,7 @@ int lx_pipe_state(struct lx6464es *chip, u32 pipe, int is_capture, u16 *rstate)
else
*rstate = (chip->rmh.stat[0] >> PSTATE_OFFSET) & 0x0F;
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -686,18 +668,16 @@ int lx_stream_set_state(struct lx6464es *chip, u32 pipe,
int is_capture, enum stream_state_t state)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_13_SET_STREAM_STATE);
chip->rmh.cmd[0] |= pipe_cmd;
chip->rmh.cmd[0] |= state;
err = lx_message_send_atomic(chip, &chip->rmh);
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -706,17 +686,14 @@ int lx_stream_set_format(struct lx6464es *chip, struct snd_pcm_runtime *runtime,
u32 pipe, int is_capture)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
-
u32 channels = runtime->channels;
if (runtime->channels != channels)
dev_err(chip->card->dev, "channel count mismatch: %d vs %d",
runtime->channels, channels);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_0C_DEF_STREAM);
chip->rmh.cmd[0] |= pipe_cmd;
@@ -732,7 +709,7 @@ int lx_stream_set_format(struct lx6464es *chip, struct snd_pcm_runtime *runtime,
chip->rmh.cmd[0] |= channels-1;
err = lx_message_send_atomic(chip, &chip->rmh);
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -741,11 +718,9 @@ int lx_stream_state(struct lx6464es *chip, u32 pipe, int is_capture,
int *rstate)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_0E_GET_STREAM_SPL_COUNT);
chip->rmh.cmd[0] |= pipe_cmd;
@@ -754,7 +729,7 @@ int lx_stream_state(struct lx6464es *chip, u32 pipe, int is_capture,
*rstate = (chip->rmh.stat[0] & SF_START) ? START_STATE : PAUSE_STATE;
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -762,11 +737,9 @@ int lx_stream_sample_position(struct lx6464es *chip, u32 pipe, int is_capture,
u64 *r_bytepos)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_0E_GET_STREAM_SPL_COUNT);
chip->rmh.cmd[0] |= pipe_cmd;
@@ -777,7 +750,7 @@ int lx_stream_sample_position(struct lx6464es *chip, u32 pipe, int is_capture,
<< 32) /* hi part */
+ chip->rmh.stat[1]; /* lo part */
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -787,11 +760,9 @@ int lx_buffer_give(struct lx6464es *chip, u32 pipe, int is_capture,
u32 *r_buffer_index)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_0F_UPDATE_BUFFER);
chip->rmh.cmd[0] |= pipe_cmd;
@@ -828,7 +799,7 @@ int lx_buffer_give(struct lx6464es *chip, u32 pipe, int is_capture,
"lx_buffer_give EB_CMD_REFUSED\n");
done:
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -836,11 +807,9 @@ int lx_buffer_free(struct lx6464es *chip, u32 pipe, int is_capture,
u32 *r_buffer_size)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_11_CANCEL_BUFFER);
chip->rmh.cmd[0] |= pipe_cmd;
@@ -852,7 +821,7 @@ int lx_buffer_free(struct lx6464es *chip, u32 pipe, int is_capture,
if (err == 0)
*r_buffer_size = chip->rmh.stat[0] & MASK_DATA_SIZE;
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -860,11 +829,9 @@ int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture,
u32 buffer_index)
{
int err;
- unsigned long flags;
-
u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_11_CANCEL_BUFFER);
chip->rmh.cmd[0] |= pipe_cmd;
@@ -872,7 +839,7 @@ int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture,
err = lx_message_send_atomic(chip, &chip->rmh);
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -885,12 +852,10 @@ int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture,
int lx_level_unmute(struct lx6464es *chip, int is_capture, int unmute)
{
int err;
- unsigned long flags;
-
/* bit set to 1: channel muted */
u64 mute_mask = unmute ? 0 : 0xFFFFFFFFFFFFFFFFLLU;
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
lx_message_init(&chip->rmh, CMD_0D_SET_MUTE);
chip->rmh.cmd[0] |= PIPE_INFO_TO_CMD(is_capture, 0);
@@ -904,7 +869,7 @@ int lx_level_unmute(struct lx6464es *chip, int is_capture, int unmute)
err = lx_message_send_atomic(chip, &chip->rmh);
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -931,10 +896,9 @@ int lx_level_peaks(struct lx6464es *chip, int is_capture, int channels,
u32 *r_levels)
{
int err = 0;
- unsigned long flags;
int i;
- spin_lock_irqsave(&chip->msg_lock, flags);
+ mutex_lock(&chip->msg_lock);
for (i = 0; i < channels; i += 4) {
u32 s0, s1, s2, s3;
@@ -959,7 +923,7 @@ int lx_level_peaks(struct lx6464es *chip, int is_capture, int channels,
r_levels += 4;
}
- spin_unlock_irqrestore(&chip->msg_lock, flags);
+ mutex_unlock(&chip->msg_lock);
return err;
}
@@ -1075,7 +1039,6 @@ static int lx_interrupt_request_new_buffer(struct lx6464es *chip,
struct snd_pcm_substream *substream = lx_stream->stream;
const unsigned int is_capture = lx_stream->is_capture;
int err;
- unsigned long flags;
const u32 channels = substream->runtime->channels;
const u32 bytes_per_frame = channels * 3;
@@ -1095,7 +1058,7 @@ static int lx_interrupt_request_new_buffer(struct lx6464es *chip,
dev_dbg(chip->card->dev, "->lx_interrupt_request_new_buffer\n");
- spin_lock_irqsave(&chip->lock, flags);
+ mutex_lock(&chip->lock);
err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed, size_array);
dev_dbg(chip->card->dev,
@@ -1109,85 +1072,28 @@ static int lx_interrupt_request_new_buffer(struct lx6464es *chip,
buffer_index, (unsigned long)buf, period_bytes);
lx_stream->frame_pos = next_pos;
- spin_unlock_irqrestore(&chip->lock, flags);
+ mutex_unlock(&chip->lock);
return err;
}
-void lx_tasklet_playback(unsigned long data)
-{
- struct lx6464es *chip = (struct lx6464es *)data;
- struct lx_stream *lx_stream = &chip->playback_stream;
- int err;
-
- dev_dbg(chip->card->dev, "->lx_tasklet_playback\n");
-
- err = lx_interrupt_request_new_buffer(chip, lx_stream);
- if (err < 0)
- dev_err(chip->card->dev,
- "cannot request new buffer for playback\n");
-
- snd_pcm_period_elapsed(lx_stream->stream);
-}
-
-void lx_tasklet_capture(unsigned long data)
-{
- struct lx6464es *chip = (struct lx6464es *)data;
- struct lx_stream *lx_stream = &chip->capture_stream;
- int err;
-
- dev_dbg(chip->card->dev, "->lx_tasklet_capture\n");
- err = lx_interrupt_request_new_buffer(chip, lx_stream);
- if (err < 0)
- dev_err(chip->card->dev,
- "cannot request new buffer for capture\n");
-
- snd_pcm_period_elapsed(lx_stream->stream);
-}
-
-
-
-static int lx_interrupt_handle_audio_transfer(struct lx6464es *chip,
- u64 notified_in_pipe_mask,
- u64 notified_out_pipe_mask)
-{
- int err = 0;
-
- if (notified_in_pipe_mask) {
- dev_dbg(chip->card->dev,
- "requesting audio transfer for capture\n");
- tasklet_hi_schedule(&chip->tasklet_capture);
- }
-
- if (notified_out_pipe_mask) {
- dev_dbg(chip->card->dev,
- "requesting audio transfer for playback\n");
- tasklet_hi_schedule(&chip->tasklet_playback);
- }
-
- return err;
-}
-
-
irqreturn_t lx_interrupt(int irq, void *dev_id)
{
struct lx6464es *chip = dev_id;
int async_pending, async_escmd;
u32 irqsrc;
-
- spin_lock(&chip->lock);
+ bool wake_thread = false;
dev_dbg(chip->card->dev,
"**************************************************\n");
if (!lx_interrupt_ack(chip, &irqsrc, &async_pending, &async_escmd)) {
- spin_unlock(&chip->lock);
dev_dbg(chip->card->dev, "IRQ_NONE\n");
return IRQ_NONE; /* this device did not cause the interrupt */
}
if (irqsrc & MASK_SYS_STATUS_CMD_DONE)
- goto exit;
+ return IRQ_HANDLED;
if (irqsrc & MASK_SYS_STATUS_EOBI)
dev_dbg(chip->card->dev, "interrupt: EOBI\n");
@@ -1202,27 +1108,8 @@ irqreturn_t lx_interrupt(int irq, void *dev_id)
dev_dbg(chip->card->dev, "interrupt: ORUN\n");
if (async_pending) {
- u64 notified_in_pipe_mask = 0;
- u64 notified_out_pipe_mask = 0;
- int freq_changed;
- int err;
-
- /* handle async events */
- err = lx_interrupt_handle_async_events(chip, irqsrc,
- &freq_changed,
- &notified_in_pipe_mask,
- &notified_out_pipe_mask);
- if (err)
- dev_err(chip->card->dev,
- "error handling async events\n");
-
- err = lx_interrupt_handle_audio_transfer(chip,
- notified_in_pipe_mask,
- notified_out_pipe_mask
- );
- if (err)
- dev_err(chip->card->dev,
- "error during audio transfer\n");
+ wake_thread = true;
+ chip->irqsrc = irqsrc;
}
if (async_escmd) {
@@ -1235,9 +1122,50 @@ irqreturn_t lx_interrupt(int irq, void *dev_id)
dev_dbg(chip->card->dev, "interrupt requests escmd handling\n");
}
-exit:
- spin_unlock(&chip->lock);
- return IRQ_HANDLED; /* this device caused the interrupt */
+ return wake_thread ? IRQ_WAKE_THREAD : IRQ_HANDLED;
+}
+
+irqreturn_t lx_threaded_irq(int irq, void *dev_id)
+{
+ struct lx6464es *chip = dev_id;
+ u64 notified_in_pipe_mask = 0;
+ u64 notified_out_pipe_mask = 0;
+ int freq_changed;
+ int err;
+
+ /* handle async events */
+ err = lx_interrupt_handle_async_events(chip, chip->irqsrc,
+ &freq_changed,
+ &notified_in_pipe_mask,
+ &notified_out_pipe_mask);
+ if (err)
+ dev_err(chip->card->dev, "error handling async events\n");
+
+ if (notified_in_pipe_mask) {
+ struct lx_stream *lx_stream = &chip->capture_stream;
+
+ dev_dbg(chip->card->dev,
+ "requesting audio transfer for capture\n");
+ err = lx_interrupt_request_new_buffer(chip, lx_stream);
+ if (err < 0)
+ dev_err(chip->card->dev,
+ "cannot request new buffer for capture\n");
+ snd_pcm_period_elapsed(lx_stream->stream);
+ }
+
+ if (notified_out_pipe_mask) {
+ struct lx_stream *lx_stream = &chip->playback_stream;
+
+ dev_dbg(chip->card->dev,
+ "requesting audio transfer for playback\n");
+ err = lx_interrupt_request_new_buffer(chip, lx_stream);
+ if (err < 0)
+ dev_err(chip->card->dev,
+ "cannot request new buffer for playback\n");
+ snd_pcm_period_elapsed(lx_stream->stream);
+ }
+
+ return IRQ_HANDLED;
}