Change xfer_size name to apply to PDC and DMA aswell.
Specify overrun bit in interrupt mask.
Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
[voice.shen@xxxxxxxxx: split as one patch]
Signed-off-by: Bo Shen <voice.shen@xxxxxxxxx>
---
sound/soc/atmel/atmel-pcm.c | 36 ++++++++++++++++++++----------------
sound/soc/atmel/atmel-pcm.h | 4 +++-
sound/soc/atmel/atmel_ssc_dai.c | 30 +++++++++++++++++-------------
3 files changed, 40 insertions(+), 30 deletions(-)
diff --git a/sound/soc/atmel/atmel-pcm.c b/sound/soc/atmel/atmel-pcm.c
index 40e17d1..a3471e9 100644
--- a/sound/soc/atmel/atmel-pcm.c
+++ b/sound/soc/atmel/atmel-pcm.c
@@ -53,7 +53,7 @@
/* TODO: These values were taken from the AT91 platform driver, check
* them against real values for AT32
*/
-static const struct snd_pcm_hardware atmel_pcm_hardware = {
+static const struct snd_pcm_hardware atmel_pcm_pdc_hardware = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_INTERLEAVED |
@@ -66,6 +66,8 @@ static const struct snd_pcm_hardware atmel_pcm_hardware = {
.buffer_bytes_max = 32 * 1024,
};
+static const struct snd_pcm_hardware *atmel_pcm_hardware;
+
/*--------------------------------------------------------------------------*\
* Data types
@@ -94,7 +96,7 @@ static int atmel_pcm_preallocate_dma_buffer(struct snd_pcm *pcm,
{
struct snd_pcm_substream *substream = pcm->streams[stream].substream;
struct snd_dma_buffer *buf = &substream->dma_buffer;
- size_t size = atmel_pcm_hardware.buffer_bytes_max;
+ size_t size = atmel_pcm_hardware->buffer_bytes_max;
buf->dev.type = SNDRV_DMA_TYPE_DEV;
buf->dev.dev = pcm->card->dev;
@@ -116,7 +118,7 @@ static int atmel_pcm_preallocate_dma_buffer(struct snd_pcm *pcm,
/*--------------------------------------------------------------------------*\
* ISR
\*--------------------------------------------------------------------------*/
-static void atmel_pcm_dma_irq(u32 ssc_sr,
+static void atmel_pcm_pdc_irq(u32 ssc_sr,
struct snd_pcm_substream *substream)
{
struct atmel_runtime_data *prtd = substream->runtime->private_data;
@@ -142,7 +144,7 @@ static void atmel_pcm_dma_irq(u32 ssc_sr,
ssc_writex(params->ssc->regs, params->pdc->xpr,
prtd->period_ptr);
ssc_writex(params->ssc->regs, params->pdc->xcr,
- prtd->period_size / params->pdc_xfer_size);
+ prtd->period_size / params->data_xfer_size);
ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR,
params->mask->pdc_enable);
}
@@ -156,7 +158,7 @@ static void atmel_pcm_dma_irq(u32 ssc_sr,
ssc_writex(params->ssc->regs, params->pdc->xnpr,
prtd->period_ptr);
ssc_writex(params->ssc->regs, params->pdc->xncr,
- prtd->period_size / params->pdc_xfer_size);
+ prtd->period_size / params->data_xfer_size);
}
snd_pcm_period_elapsed(substream);
@@ -180,7 +182,7 @@ static int atmel_pcm_hw_params(struct snd_pcm_substream *substream,
runtime->dma_bytes = params_buffer_bytes(params);
prtd->params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
- prtd->params->dma_intr_handler = atmel_pcm_dma_irq;
+ prtd->params->dma_intr_handler = atmel_pcm_pdc_irq;
prtd->dma_buffer = runtime->dma_addr;
prtd->dma_buffer_end = runtime->dma_addr + runtime->dma_bytes;
@@ -209,7 +211,7 @@ static int atmel_pcm_hw_free(struct snd_pcm_substream *substream)
return 0;
}
-static int atmel_pcm_prepare(struct snd_pcm_substream *substream)
+static int atmel_pcm_pdc_prepare(struct snd_pcm_substream *substream)
{
struct atmel_runtime_data *prtd = substream->runtime->private_data;
struct atmel_pcm_dma_params *params = prtd->params;
@@ -221,7 +223,7 @@ static int atmel_pcm_prepare(struct snd_pcm_substream *substream)
return 0;
}
-static int atmel_pcm_trigger(struct snd_pcm_substream *substream,
+static int atmel_pcm_pdc_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_pcm_runtime *rtd = substream->runtime;
@@ -240,13 +242,13 @@ static int atmel_pcm_trigger(struct snd_pcm_substream *substream,
ssc_writex(params->ssc->regs, params->pdc->xpr,
prtd->period_ptr);
ssc_writex(params->ssc->regs, params->pdc->xcr,
- prtd->period_size / params->pdc_xfer_size);
+ prtd->period_size / params->data_xfer_size);
prtd->period_ptr += prtd->period_size;
ssc_writex(params->ssc->regs, params->pdc->xnpr,
prtd->period_ptr);
ssc_writex(params->ssc->regs, params->pdc->xncr,
- prtd->period_size / params->pdc_xfer_size);
+ prtd->period_size / params->data_xfer_size);
pr_debug("atmel-pcm: trigger: "
"period_ptr=%lx, xpr=%u, "
@@ -264,7 +266,7 @@ static int atmel_pcm_trigger(struct snd_pcm_substream *substream,
pr_debug("sr=%u imr=%u\n",
ssc_readx(params->ssc->regs, SSC_SR),
- ssc_readx(params->ssc->regs, SSC_IER));
+ ssc_readx(params->ssc->regs, SSC_IMR));
break; /* SNDRV_PCM_TRIGGER_START */
case SNDRV_PCM_TRIGGER_STOP:
@@ -287,7 +289,7 @@ static int atmel_pcm_trigger(struct snd_pcm_substream *substream,
return ret;
}
-static snd_pcm_uframes_t atmel_pcm_pointer(
+static snd_pcm_uframes_t atmel_pcm_pdc_pointer(
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -311,7 +313,7 @@ static int atmel_pcm_open(struct snd_pcm_substream *substream)
struct atmel_runtime_data *prtd;
int ret = 0;
- snd_soc_set_runtime_hwparams(substream, &atmel_pcm_hardware);
+ snd_soc_set_runtime_hwparams(substream, atmel_pcm_hardware);
/* ensure that buffer size is a multiple of period size */
ret = snd_pcm_hw_constraint_integer(runtime,
@@ -352,9 +354,9 @@ static struct snd_pcm_ops atmel_pcm_ops = {
.ioctl = snd_pcm_lib_ioctl,
.hw_params = atmel_pcm_hw_params,
.hw_free = atmel_pcm_hw_free,
- .prepare = atmel_pcm_prepare,
- .trigger = atmel_pcm_trigger,
- .pointer = atmel_pcm_pointer,
+ .prepare = atmel_pcm_pdc_prepare,
+ .trigger = atmel_pcm_pdc_trigger,
+ .pointer = atmel_pcm_pdc_pointer,
.mmap = atmel_pcm_mmap,
};
@@ -475,6 +477,8 @@ static struct snd_soc_platform_driver atmel_soc_platform = {
int atmel_pcm_platform_register(struct device *dev)
{
+ atmel_pcm_hardware = &atmel_pcm_pdc_hardware;
+
return snd_soc_register_platform(dev, &atmel_soc_platform);
}
EXPORT_SYMBOL(atmel_pcm_platform_register);
diff --git a/sound/soc/atmel/atmel-pcm.h b/sound/soc/atmel/atmel-pcm.h
index e6d67b3..261331d 100644
--- a/sound/soc/atmel/atmel-pcm.h
+++ b/sound/soc/atmel/atmel-pcm.h
@@ -50,6 +50,7 @@ struct atmel_pdc_regs {
struct atmel_ssc_mask {
u32 ssc_enable; /* SSC recv/trans enable */
u32 ssc_disable; /* SSC recv/trans disable */
+ u32 ssc_error; /* SSC error conditions */
u32 ssc_endx; /* SSC ENDTX or ENDRX */
u32 ssc_endbuf; /* SSC TXBUFE or RXBUFF */
u32 pdc_enable; /* PDC recv/trans enable */
@@ -66,7 +67,8 @@ struct atmel_ssc_mask {
*/
struct atmel_pcm_dma_params {
char *name; /* stream identifier */
- int pdc_xfer_size; /* PDC counter increment in bytes */
+ int data_xfer_size; /* PDC counter increment in bytes,
+ DMA data transfer size in bytes */
struct ssc_device *ssc; /* SSC device for stream */
struct atmel_pdc_regs *pdc; /* PDC receive or transmit registers */
struct atmel_ssc_mask *mask; /* SSC & PDC status bits */
diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
index 7932c05..a87d6d8 100644
--- a/sound/soc/atmel/atmel_ssc_dai.c
+++ b/sound/soc/atmel/atmel_ssc_dai.c
@@ -82,6 +82,7 @@ static struct atmel_ssc_mask ssc_tx_mask = {
static struct atmel_ssc_mask ssc_rx_mask = {
.ssc_enable = SSC_BIT(CR_RXEN),
.ssc_disable = SSC_BIT(CR_RXDIS),
+ .ssc_error = SSC_BIT(SR_OVRUN),
.ssc_endx = SSC_BIT(SR_ENDRX),
.ssc_endbuf = SSC_BIT(SR_RXBUFF),
.pdc_enable = ATMEL_PDC_RXTEN,
@@ -175,7 +176,8 @@ static irqreturn_t atmel_ssc_interrupt(int irq, void *dev_id)
if ((dma_params != NULL) &&
(dma_params->dma_intr_handler != NULL)) {
ssc_substream_mask = (dma_params->mask->ssc_endx |
- dma_params->mask->ssc_endbuf);
+ dma_params->mask->ssc_endbuf |
+ dma_params->mask->ssc_error);
if (ssc_sr & ssc_substream_mask) {
dma_params->dma_intr_handler(ssc_sr,
dma_params->
@@ -368,19 +370,19 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S8:
bits = 8;
- dma_params->pdc_xfer_size = 1;
+ dma_params->data_xfer_size = 1;
break;
case SNDRV_PCM_FORMAT_S16_LE:
bits = 16;
- dma_params->pdc_xfer_size = 2;
+ dma_params->data_xfer_size = 2;
break;
case SNDRV_PCM_FORMAT_S24_LE:
bits = 24;
- dma_params->pdc_xfer_size = 4;
+ dma_params->data_xfer_size = 4;
break;
case SNDRV_PCM_FORMAT_S32_LE:
bits = 32;
- dma_params->pdc_xfer_size = 4;
+ dma_params->data_xfer_size = 4;
break;
default:
printk(KERN_WARNING "atmel_ssc_dai: unsupported PCM format");
@@ -553,15 +555,17 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
/* Reset the SSC and its PDC registers */
ssc_writel(ssc_p->ssc->regs, CR, SSC_BIT(CR_SWRST));
- ssc_writel(ssc_p->ssc->regs, PDC_RPR, 0);
- ssc_writel(ssc_p->ssc->regs, PDC_RCR, 0);
- ssc_writel(ssc_p->ssc->regs, PDC_RNPR, 0);
- ssc_writel(ssc_p->ssc->regs, PDC_RNCR, 0);
+ if (!ssc_p->ssc->pdata->use_dma) {
+ ssc_writel(ssc_p->ssc->regs, PDC_RPR, 0);
+ ssc_writel(ssc_p->ssc->regs, PDC_RCR, 0);
+ ssc_writel(ssc_p->ssc->regs, PDC_RNPR, 0);
+ ssc_writel(ssc_p->ssc->regs, PDC_RNCR, 0);
- ssc_writel(ssc_p->ssc->regs, PDC_TPR, 0);
- ssc_writel(ssc_p->ssc->regs, PDC_TCR, 0);
- ssc_writel(ssc_p->ssc->regs, PDC_TNPR, 0);
- ssc_writel(ssc_p->ssc->regs, PDC_TNCR, 0);
+ ssc_writel(ssc_p->ssc->regs, PDC_TPR, 0);
+ ssc_writel(ssc_p->ssc->regs, PDC_TCR, 0);
+ ssc_writel(ssc_p->ssc->regs, PDC_TNPR, 0);
+ ssc_writel(ssc_p->ssc->regs, PDC_TNCR, 0);
+ }
ret = request_irq(ssc_p->ssc->irq, atmel_ssc_interrupt, 0,
ssc_p->name, ssc_p);
--
1.7.9.5
--
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