Change xfer_size name to apply to PDC and DMA aswell. Specify overrun bit in interrupt mask.
Signed-off-by: Nicolas Ferre nicolas.ferre@atmel.com [voice.shen@atmel.com: split as one patch] Signed-off-by: Bo Shen voice.shen@atmel.com --- 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);