[PATCH V1 2/3] Rename the PSC functions to DMA
Grant Likely
grant.likely at secretlab.ca
Mon Apr 27 14:33:55 EST 2009
On Sun, Apr 26, 2009 at 10:04 PM, Grant Likely
<grant.likely at secretlab.ca> wrote:
> On Sun, Apr 26, 2009 at 1:53 PM, Jon Smirl <jonsmirl at gmail.com> wrote:
>> Rename the functions in the mpc5200 DMA file from i2s to dma to reflect the file they are in.
>>
>> Signed-off-by: Jon Smirl <jonsmirl at gmail.com>
>
> Acked-by: Grant Likely <grant.likely at secretlab.ca>
Okay, I've taken a second look now (as per my comment on 3/3), and
yes, I'm still okay with the name changes because the header file
scope is restricted. If this header was in include/linux/, then I'd
say the prefix should be more specific.
g.
>
>
>> ---
>> sound/soc/fsl/mpc5200_dma.c | 194 ++++++++++++++++++++-------------------
>> sound/soc/fsl/mpc5200_dma.h | 26 +++--
>> sound/soc/fsl/mpc5200_psc_i2s.c | 160 ++++++++++++++++----------------
>> 3 files changed, 190 insertions(+), 190 deletions(-)
>>
>> diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
>> index cccaff4..c82ef75 100644
>> --- a/sound/soc/fsl/mpc5200_dma.c
>> +++ b/sound/soc/fsl/mpc5200_dma.c
>> @@ -34,21 +34,21 @@ MODULE_LICENSE("GPL");
>> /*
>> * Interrupt handlers
>> */
>> -static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
>> +static irqreturn_t psc_dma_status_irq(int irq, void *_psc_dma)
>> {
>> - struct psc_i2s *psc_i2s = _psc_i2s;
>> - struct mpc52xx_psc __iomem *regs = psc_i2s->psc_regs;
>> + struct psc_dma *psc_dma = _psc_dma;
>> + struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
>> u16 isr;
>>
>> isr = in_be16(®s->mpc52xx_psc_isr);
>>
>> /* Playback underrun error */
>> - if (psc_i2s->playback.active && (isr & MPC52xx_PSC_IMR_TXEMP))
>> - psc_i2s->stats.underrun_count++;
>> + if (psc_dma->playback.active && (isr & MPC52xx_PSC_IMR_TXEMP))
>> + psc_dma->stats.underrun_count++;
>>
>> /* Capture overrun error */
>> - if (psc_i2s->capture.active && (isr & MPC52xx_PSC_IMR_ORERR))
>> - psc_i2s->stats.overrun_count++;
>> + if (psc_dma->capture.active && (isr & MPC52xx_PSC_IMR_ORERR))
>> + psc_dma->stats.overrun_count++;
>>
>> out_8(®s->command, 4 << 4); /* reset the error status */
>>
>> @@ -56,7 +56,7 @@ static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
>> }
>>
>> /**
>> - * psc_i2s_bcom_enqueue_next_buffer - Enqueue another audio buffer
>> + * psc_dma_bcom_enqueue_next_buffer - Enqueue another audio buffer
>> * @s: pointer to stream private data structure
>> *
>> * Enqueues another audio period buffer into the bestcomm queue.
>> @@ -65,7 +65,7 @@ static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
>> * the queue. Otherwise the enqueue will fail and the audio ring buffer
>> * will get out of sync
>> */
>> -static void psc_i2s_bcom_enqueue_next_buffer(struct psc_i2s_stream *s)
>> +static void psc_dma_bcom_enqueue_next_buffer(struct psc_dma_stream *s)
>> {
>> struct bcom_bd *bd;
>>
>> @@ -82,9 +82,9 @@ static void psc_i2s_bcom_enqueue_next_buffer(struct psc_i2s_stream *s)
>> }
>>
>> /* Bestcomm DMA irq handler */
>> -static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
>> +static irqreturn_t psc_dma_bcom_irq(int irq, void *_psc_dma_stream)
>> {
>> - struct psc_i2s_stream *s = _psc_i2s_stream;
>> + struct psc_dma_stream *s = _psc_dma_stream;
>>
>> /* For each finished period, dequeue the completed period buffer
>> * and enqueue a new one in it's place. */
>> @@ -93,7 +93,7 @@ static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
>> s->period_current_pt += s->period_bytes;
>> if (s->period_current_pt >= s->period_end)
>> s->period_current_pt = s->period_start;
>> - psc_i2s_bcom_enqueue_next_buffer(s);
>> + psc_dma_bcom_enqueue_next_buffer(s);
>> bcom_enable(s->bcom_task);
>> }
>>
>> @@ -106,39 +106,39 @@ static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
>> }
>>
>> /**
>> - * psc_i2s_startup: create a new substream
>> + * psc_dma_startup: create a new substream
>> *
>> * This is the first function called when a stream is opened.
>> *
>> * If this is the first stream open, then grab the IRQ and program most of
>> * the PSC registers.
>> */
>> -int psc_i2s_startup(struct snd_pcm_substream *substream,
>> +int psc_dma_startup(struct snd_pcm_substream *substream,
>> struct snd_soc_dai *dai)
>> {
>> struct snd_soc_pcm_runtime *rtd = substream->private_data;
>> - struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
>> + struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
>> int rc;
>>
>> - dev_dbg(psc_i2s->dev, "psc_i2s_startup(substream=%p)\n", substream);
>> + dev_dbg(psc_dma->dev, "psc_dma_startup(substream=%p)\n", substream);
>>
>> - if (!psc_i2s->playback.active &&
>> - !psc_i2s->capture.active) {
>> + if (!psc_dma->playback.active &&
>> + !psc_dma->capture.active) {
>> /* Setup the IRQs */
>> - rc = request_irq(psc_i2s->irq, &psc_i2s_status_irq, IRQF_SHARED,
>> - "psc-i2s-status", psc_i2s);
>> - rc |= request_irq(psc_i2s->capture.irq,
>> - &psc_i2s_bcom_irq, IRQF_SHARED,
>> - "psc-i2s-capture", &psc_i2s->capture);
>> - rc |= request_irq(psc_i2s->playback.irq,
>> - &psc_i2s_bcom_irq, IRQF_SHARED,
>> - "psc-i2s-playback", &psc_i2s->playback);
>> + rc = request_irq(psc_dma->irq, &psc_dma_status_irq, IRQF_SHARED,
>> + "psc-dma-status", psc_dma);
>> + rc |= request_irq(psc_dma->capture.irq,
>> + &psc_dma_bcom_irq, IRQF_SHARED,
>> + "psc-dma-capture", &psc_dma->capture);
>> + rc |= request_irq(psc_dma->playback.irq,
>> + &psc_dma_bcom_irq, IRQF_SHARED,
>> + "psc-dma-playback", &psc_dma->playback);
>> if (rc) {
>> - free_irq(psc_i2s->irq, psc_i2s);
>> - free_irq(psc_i2s->capture.irq,
>> - &psc_i2s->capture);
>> - free_irq(psc_i2s->playback.irq,
>> - &psc_i2s->playback);
>> + free_irq(psc_dma->irq, psc_dma);
>> + free_irq(psc_dma->capture.irq,
>> + &psc_dma->capture);
>> + free_irq(psc_dma->playback.irq,
>> + &psc_dma->playback);
>> return -ENODEV;
>> }
>> }
>> @@ -146,7 +146,7 @@ int psc_i2s_startup(struct snd_pcm_substream *substream,
>> return 0;
>> }
>>
>> -int psc_i2s_hw_free(struct snd_pcm_substream *substream,
>> +int psc_dma_hw_free(struct snd_pcm_substream *substream,
>> struct snd_soc_dai *dai)
>> {
>> snd_pcm_set_runtime_buffer(substream, NULL);
>> @@ -154,29 +154,29 @@ int psc_i2s_hw_free(struct snd_pcm_substream *substream,
>> }
>>
>> /**
>> - * psc_i2s_trigger: start and stop the DMA transfer.
>> + * psc_dma_trigger: start and stop the DMA transfer.
>> *
>> * This function is called by ALSA to start, stop, pause, and resume the DMA
>> * transfer of data.
>> */
>> -int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
>> +int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>> struct snd_soc_dai *dai)
>> {
>> struct snd_soc_pcm_runtime *rtd = substream->private_data;
>> - struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
>> + struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
>> struct snd_pcm_runtime *runtime = substream->runtime;
>> - struct psc_i2s_stream *s;
>> - struct mpc52xx_psc __iomem *regs = psc_i2s->psc_regs;
>> + struct psc_dma_stream *s;
>> + struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
>> u16 imr;
>> u8 psc_cmd;
>> unsigned long flags;
>>
>> if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
>> - s = &psc_i2s->capture;
>> + s = &psc_dma->capture;
>> else
>> - s = &psc_i2s->playback;
>> + s = &psc_dma->playback;
>>
>> - dev_dbg(psc_i2s->dev, "psc_i2s_trigger(substream=%p, cmd=%i)"
>> + dev_dbg(psc_dma->dev, "psc_dma_trigger(substream=%p, cmd=%i)"
>> " stream_id=%i\n",
>> substream, cmd, substream->pstr->stream);
>>
>> @@ -207,14 +207,14 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
>> else
>> bcom_gen_bd_tx_reset(s->bcom_task);
>> while (!bcom_queue_full(s->bcom_task))
>> - psc_i2s_bcom_enqueue_next_buffer(s);
>> + psc_dma_bcom_enqueue_next_buffer(s);
>> bcom_enable(s->bcom_task);
>>
>> - /* Due to errata in the i2s mode; need to line up enabling
>> + /* Due to errata in the dma mode; need to line up enabling
>> * the transmitter with a transition on the frame sync
>> * line */
>>
>> - spin_lock_irqsave(&psc_i2s->lock, flags);
>> + spin_lock_irqsave(&psc_dma->lock, flags);
>> /* first make sure it is low */
>> while ((in_8(®s->ipcr_acr.ipcr) & 0x80) != 0)
>> ;
>> @@ -228,7 +228,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
>> if (substream->pstr->stream == SNDRV_PCM_STREAM_PLAYBACK)
>> psc_cmd |= MPC52xx_PSC_TX_ENABLE;
>> out_8(®s->command, psc_cmd);
>> - spin_unlock_irqrestore(&psc_i2s->lock, flags);
>> + spin_unlock_irqrestore(&psc_dma->lock, flags);
>>
>> break;
>>
>> @@ -236,7 +236,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
>> /* Turn off the PSC */
>> s->active = 0;
>> if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE) {
>> - if (!psc_i2s->playback.active) {
>> + if (!psc_dma->playback.active) {
>> out_8(®s->command, 2 << 4); /* reset rx */
>> out_8(®s->command, 3 << 4); /* reset tx */
>> out_8(®s->command, 4 << 4); /* reset err */
>> @@ -244,7 +244,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
>> } else {
>> out_8(®s->command, 3 << 4); /* reset tx */
>> out_8(®s->command, 4 << 4); /* reset err */
>> - if (!psc_i2s->capture.active)
>> + if (!psc_dma->capture.active)
>> out_8(®s->command, 2 << 4); /* reset rx */
>> }
>>
>> @@ -255,15 +255,15 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
>> break;
>>
>> default:
>> - dev_dbg(psc_i2s->dev, "invalid command\n");
>> + dev_dbg(psc_dma->dev, "invalid command\n");
>> return -EINVAL;
>> }
>>
>> /* Update interrupt enable settings */
>> imr = 0;
>> - if (psc_i2s->playback.active)
>> + if (psc_dma->playback.active)
>> imr |= MPC52xx_PSC_IMR_TXEMP;
>> - if (psc_i2s->capture.active)
>> + if (psc_dma->capture.active)
>> imr |= MPC52xx_PSC_IMR_ORERR;
>> out_be16(®s->isr_imr.imr, imr);
>>
>> @@ -271,36 +271,36 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
>> }
>>
>> /**
>> - * psc_i2s_shutdown: shutdown the data transfer on a stream
>> + * psc_dma_shutdown: shutdown the data transfer on a stream
>> *
>> * Shutdown the PSC if there are no other substreams open.
>> */
>> -void psc_i2s_shutdown(struct snd_pcm_substream *substream,
>> +void psc_dma_shutdown(struct snd_pcm_substream *substream,
>> struct snd_soc_dai *dai)
>> {
>> struct snd_soc_pcm_runtime *rtd = substream->private_data;
>> - struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
>> + struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
>>
>> - dev_dbg(psc_i2s->dev, "psc_i2s_shutdown(substream=%p)\n", substream);
>> + dev_dbg(psc_dma->dev, "psc_dma_shutdown(substream=%p)\n", substream);
>>
>> /*
>> * If this is the last active substream, disable the PSC and release
>> * the IRQ.
>> */
>> - if (!psc_i2s->playback.active &&
>> - !psc_i2s->capture.active) {
>> + if (!psc_dma->playback.active &&
>> + !psc_dma->capture.active) {
>>
>> /* Disable all interrupts and reset the PSC */
>> - out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0);
>> - out_8(&psc_i2s->psc_regs->command, 3 << 4); /* reset tx */
>> - out_8(&psc_i2s->psc_regs->command, 2 << 4); /* reset rx */
>> - out_8(&psc_i2s->psc_regs->command, 1 << 4); /* reset mode */
>> - out_8(&psc_i2s->psc_regs->command, 4 << 4); /* reset error */
>> + out_be16(&psc_dma->psc_regs->isr_imr.imr, 0);
>> + out_8(&psc_dma->psc_regs->command, 3 << 4); /* reset tx */
>> + out_8(&psc_dma->psc_regs->command, 2 << 4); /* reset rx */
>> + out_8(&psc_dma->psc_regs->command, 1 << 4); /* reset mode */
>> + out_8(&psc_dma->psc_regs->command, 4 << 4); /* reset error */
>>
>> /* Release irqs */
>> - free_irq(psc_i2s->irq, psc_i2s);
>> - free_irq(psc_i2s->capture.irq, &psc_i2s->capture);
>> - free_irq(psc_i2s->playback.irq, &psc_i2s->playback);
>> + free_irq(psc_dma->irq, psc_dma);
>> + free_irq(psc_dma->capture.irq, &psc_dma->capture);
>> + free_irq(psc_dma->playback.irq, &psc_dma->playback);
>> }
>> }
>>
>> @@ -312,7 +312,7 @@ void psc_i2s_shutdown(struct snd_pcm_substream *substream,
>> * interaction with the attached codec
>> */
>>
>> -static const struct snd_pcm_hardware psc_i2s_pcm_hardware = {
>> +static const struct snd_pcm_hardware psc_dma_pcm_hardware = {
>> .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
>> SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER,
>> .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE |
>> @@ -329,80 +329,80 @@ static const struct snd_pcm_hardware psc_i2s_pcm_hardware = {
>> .fifo_size = 0,
>> };
>>
>> -static int psc_i2s_pcm_open(struct snd_pcm_substream *substream)
>> +static int psc_dma_pcm_open(struct snd_pcm_substream *substream)
>> {
>> struct snd_soc_pcm_runtime *rtd = substream->private_data;
>> - struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
>> - struct psc_i2s_stream *s;
>> + struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
>> + struct psc_dma_stream *s;
>>
>> - dev_dbg(psc_i2s->dev, "psc_i2s_pcm_open(substream=%p)\n", substream);
>> + dev_dbg(psc_dma->dev, "psc_dma_pcm_open(substream=%p)\n", substream);
>>
>> if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
>> - s = &psc_i2s->capture;
>> + s = &psc_dma->capture;
>> else
>> - s = &psc_i2s->playback;
>> + s = &psc_dma->playback;
>>
>> - snd_soc_set_runtime_hwparams(substream, &psc_i2s_pcm_hardware);
>> + snd_soc_set_runtime_hwparams(substream, &psc_dma_pcm_hardware);
>>
>> s->stream = substream;
>> return 0;
>> }
>>
>> -static int psc_i2s_pcm_close(struct snd_pcm_substream *substream)
>> +static int psc_dma_pcm_close(struct snd_pcm_substream *substream)
>> {
>> struct snd_soc_pcm_runtime *rtd = substream->private_data;
>> - struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
>> - struct psc_i2s_stream *s;
>> + struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
>> + struct psc_dma_stream *s;
>>
>> - dev_dbg(psc_i2s->dev, "psc_i2s_pcm_close(substream=%p)\n", substream);
>> + dev_dbg(psc_dma->dev, "psc_dma_pcm_close(substream=%p)\n", substream);
>>
>> if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
>> - s = &psc_i2s->capture;
>> + s = &psc_dma->capture;
>> else
>> - s = &psc_i2s->playback;
>> + s = &psc_dma->playback;
>>
>> s->stream = NULL;
>> return 0;
>> }
>>
>> static snd_pcm_uframes_t
>> -psc_i2s_pcm_pointer(struct snd_pcm_substream *substream)
>> +psc_dma_pcm_pointer(struct snd_pcm_substream *substream)
>> {
>> struct snd_soc_pcm_runtime *rtd = substream->private_data;
>> - struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
>> - struct psc_i2s_stream *s;
>> + struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
>> + struct psc_dma_stream *s;
>> dma_addr_t count;
>>
>> if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
>> - s = &psc_i2s->capture;
>> + s = &psc_dma->capture;
>> else
>> - s = &psc_i2s->playback;
>> + s = &psc_dma->playback;
>>
>> count = s->period_current_pt - s->period_start;
>>
>> return bytes_to_frames(substream->runtime, count);
>> }
>>
>> -static struct snd_pcm_ops psc_i2s_pcm_ops = {
>> - .open = psc_i2s_pcm_open,
>> - .close = psc_i2s_pcm_close,
>> +static struct snd_pcm_ops psc_dma_pcm_ops = {
>> + .open = psc_dma_pcm_open,
>> + .close = psc_dma_pcm_close,
>> .ioctl = snd_pcm_lib_ioctl,
>> - .pointer = psc_i2s_pcm_pointer,
>> + .pointer = psc_dma_pcm_pointer,
>> };
>>
>> -static u64 psc_i2s_pcm_dmamask = 0xffffffff;
>> -static int psc_i2s_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
>> +static u64 psc_dma_pcm_dmamask = 0xffffffff;
>> +static int psc_dma_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
>> struct snd_pcm *pcm)
>> {
>> struct snd_soc_pcm_runtime *rtd = pcm->private_data;
>> - size_t size = psc_i2s_pcm_hardware.buffer_bytes_max;
>> + size_t size = psc_dma_pcm_hardware.buffer_bytes_max;
>> int rc = 0;
>>
>> - dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_new(card=%p, dai=%p, pcm=%p)\n",
>> + dev_dbg(rtd->socdev->dev, "psc_dma_pcm_new(card=%p, dai=%p, pcm=%p)\n",
>> card, dai, pcm);
>>
>> if (!card->dev->dma_mask)
>> - card->dev->dma_mask = &psc_i2s_pcm_dmamask;
>> + card->dev->dma_mask = &psc_dma_pcm_dmamask;
>> if (!card->dev->coherent_dma_mask)
>> card->dev->coherent_dma_mask = 0xffffffff;
>>
>> @@ -430,13 +430,13 @@ static int psc_i2s_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
>> return -ENOMEM;
>> }
>>
>> -static void psc_i2s_pcm_free(struct snd_pcm *pcm)
>> +static void psc_dma_pcm_free(struct snd_pcm *pcm)
>> {
>> struct snd_soc_pcm_runtime *rtd = pcm->private_data;
>> struct snd_pcm_substream *substream;
>> int stream;
>>
>> - dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_free(pcm=%p)\n", pcm);
>> + dev_dbg(rtd->socdev->dev, "psc_dma_pcm_free(pcm=%p)\n", pcm);
>>
>> for (stream = 0; stream < 2; stream++) {
>> substream = pcm->streams[stream].substream;
>> @@ -448,10 +448,10 @@ static void psc_i2s_pcm_free(struct snd_pcm *pcm)
>> }
>> }
>>
>> -struct snd_soc_platform psc_i2s_pcm_soc_platform = {
>> +struct snd_soc_platform psc_dma_pcm_soc_platform = {
>> .name = "mpc5200-psc-audio",
>> - .pcm_ops = &psc_i2s_pcm_ops,
>> - .pcm_new = &psc_i2s_pcm_new,
>> - .pcm_free = &psc_i2s_pcm_free,
>> + .pcm_ops = &psc_dma_pcm_ops,
>> + .pcm_new = &psc_dma_pcm_new,
>> + .pcm_free = &psc_dma_pcm_free,
>> };
>>
>> diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
>> index 9a19e8a..a33232c 100644
>> --- a/sound/soc/fsl/mpc5200_dma.h
>> +++ b/sound/soc/fsl/mpc5200_dma.h
>> @@ -6,9 +6,9 @@
>> #define __SOUND_SOC_FSL_MPC5200_DMA_H__
>>
>> /**
>> - * psc_i2s_stream - Data specific to a single stream (playback or capture)
>> + * psc_dma_stream - Data specific to a single stream (playback or capture)
>> * @active: flag indicating if the stream is active
>> - * @psc_i2s: pointer back to parent psc_i2s data structure
>> + * @psc_dma: pointer back to parent psc_dma data structure
>> * @bcom_task: bestcomm task structure
>> * @irq: irq number for bestcomm task
>> * @period_start: physical address of start of DMA region
>> @@ -16,9 +16,9 @@
>> * @period_next_pt: physical address of next DMA buffer to enqueue
>> * @period_bytes: size of DMA period in bytes
>> */
>> -struct psc_i2s_stream {
>> +struct psc_dma_stream {
>> int active;
>> - struct psc_i2s *psc_i2s;
>> + struct psc_dma *psc_dma;
>> struct bcom_task *bcom_task;
>> int irq;
>> struct snd_pcm_substream *stream;
>> @@ -30,7 +30,7 @@ struct psc_i2s_stream {
>> };
>>
>> /**
>> - * psc_i2s - Private driver data
>> + * psc_dma - Private driver data
>> * @name: short name for this device ("PSC0", "PSC1", etc)
>> * @psc_regs: pointer to the PSC's registers
>> * @fifo_regs: pointer to the PSC's FIFO registers
>> @@ -42,7 +42,7 @@ struct psc_i2s_stream {
>> * @playback: Playback stream context data
>> * @capture: Capture stream context data
>> */
>> -struct psc_i2s {
>> +struct psc_dma {
>> char name[32];
>> struct mpc52xx_psc __iomem *psc_regs;
>> struct mpc52xx_psc_fifo __iomem *fifo_regs;
>> @@ -53,8 +53,8 @@ struct psc_i2s {
>> u32 sicr;
>>
>> /* per-stream data */
>> - struct psc_i2s_stream playback;
>> - struct psc_i2s_stream capture;
>> + struct psc_dma_stream playback;
>> + struct psc_dma_stream capture;
>>
>> /* Statistics */
>> struct {
>> @@ -64,18 +64,18 @@ struct psc_i2s {
>> };
>>
>>
>> -int psc_i2s_startup(struct snd_pcm_substream *substream,
>> +int psc_dma_startup(struct snd_pcm_substream *substream,
>> struct snd_soc_dai *dai);
>>
>> -int psc_i2s_hw_free(struct snd_pcm_substream *substream,
>> +int psc_dma_hw_free(struct snd_pcm_substream *substream,
>> struct snd_soc_dai *dai);
>>
>> -void psc_i2s_shutdown(struct snd_pcm_substream *substream,
>> +void psc_dma_shutdown(struct snd_pcm_substream *substream,
>> struct snd_soc_dai *dai);
>>
>> -int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
>> +int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>> struct snd_soc_dai *dai);
>>
>> -extern struct snd_soc_platform psc_i2s_pcm_soc_platform;
>> +extern struct snd_soc_platform psc_dma_pcm_soc_platform;
>>
>> #endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
>> diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc_i2s.c
>> index 8974b53..12a7917 100644
>> --- a/sound/soc/fsl/mpc5200_psc_i2s.c
>> +++ b/sound/soc/fsl/mpc5200_psc_i2s.c
>> @@ -54,10 +54,10 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
>> struct snd_soc_dai *dai)
>> {
>> struct snd_soc_pcm_runtime *rtd = substream->private_data;
>> - struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
>> + struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
>> u32 mode;
>>
>> - dev_dbg(psc_i2s->dev, "%s(substream=%p) p_size=%i p_bytes=%i"
>> + dev_dbg(psc_dma->dev, "%s(substream=%p) p_size=%i p_bytes=%i"
>> " periods=%i buffer_size=%i buffer_bytes=%i\n",
>> __func__, substream, params_period_size(params),
>> params_period_bytes(params), params_periods(params),
>> @@ -77,10 +77,10 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
>> mode = MPC52xx_PSC_SICR_SIM_CODEC_32;
>> break;
>> default:
>> - dev_dbg(psc_i2s->dev, "invalid format\n");
>> + dev_dbg(psc_dma->dev, "invalid format\n");
>> return -EINVAL;
>> }
>> - out_be32(&psc_i2s->psc_regs->sicr, psc_i2s->sicr | mode);
>> + out_be32(&psc_dma->psc_regs->sicr, psc_dma->sicr | mode);
>>
>> snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
>>
>> @@ -104,8 +104,8 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
>> static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
>> int clk_id, unsigned int freq, int dir)
>> {
>> - struct psc_i2s *psc_i2s = cpu_dai->private_data;
>> - dev_dbg(psc_i2s->dev, "psc_i2s_set_sysclk(cpu_dai=%p, dir=%i)\n",
>> + struct psc_dma *psc_dma = cpu_dai->private_data;
>> + dev_dbg(psc_dma->dev, "psc_i2s_set_sysclk(cpu_dai=%p, dir=%i)\n",
>> cpu_dai, dir);
>> return (dir == SND_SOC_CLOCK_IN) ? 0 : -EINVAL;
>> }
>> @@ -123,8 +123,8 @@ static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
>> */
>> static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int format)
>> {
>> - struct psc_i2s *psc_i2s = cpu_dai->private_data;
>> - dev_dbg(psc_i2s->dev, "psc_i2s_set_fmt(cpu_dai=%p, format=%i)\n",
>> + struct psc_dma *psc_dma = cpu_dai->private_data;
>> + dev_dbg(psc_dma->dev, "psc_i2s_set_fmt(cpu_dai=%p, format=%i)\n",
>> cpu_dai, format);
>> return (format == SND_SOC_DAIFMT_I2S) ? 0 : -EINVAL;
>> }
>> @@ -140,11 +140,11 @@ static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int format)
>> * psc_i2s_dai_template: template CPU Digital Audio Interface
>> */
>> static struct snd_soc_dai_ops psc_i2s_dai_ops = {
>> - .startup = psc_i2s_startup,
>> + .startup = psc_dma_startup,
>> .hw_params = psc_i2s_hw_params,
>> - .hw_free = psc_i2s_hw_free,
>> - .shutdown = psc_i2s_shutdown,
>> - .trigger = psc_i2s_trigger,
>> + .hw_free = psc_dma_hw_free,
>> + .shutdown = psc_dma_shutdown,
>> + .trigger = psc_dma_trigger,
>> .set_sysclk = psc_i2s_set_sysclk,
>> .set_fmt = psc_i2s_set_fmt,
>> };
>> @@ -172,24 +172,24 @@ static struct snd_soc_dai psc_i2s_dai_template = {
>> static ssize_t psc_i2s_status_show(struct device *dev,
>> struct device_attribute *attr, char *buf)
>> {
>> - struct psc_i2s *psc_i2s = dev_get_drvdata(dev);
>> + struct psc_dma *psc_dma = dev_get_drvdata(dev);
>>
>> return sprintf(buf, "status=%.4x sicr=%.8x rfnum=%i rfstat=0x%.4x "
>> "tfnum=%i tfstat=0x%.4x\n",
>> - in_be16(&psc_i2s->psc_regs->sr_csr.status),
>> - in_be32(&psc_i2s->psc_regs->sicr),
>> - in_be16(&psc_i2s->fifo_regs->rfnum) & 0x1ff,
>> - in_be16(&psc_i2s->fifo_regs->rfstat),
>> - in_be16(&psc_i2s->fifo_regs->tfnum) & 0x1ff,
>> - in_be16(&psc_i2s->fifo_regs->tfstat));
>> + in_be16(&psc_dma->psc_regs->sr_csr.status),
>> + in_be32(&psc_dma->psc_regs->sicr),
>> + in_be16(&psc_dma->fifo_regs->rfnum) & 0x1ff,
>> + in_be16(&psc_dma->fifo_regs->rfstat),
>> + in_be16(&psc_dma->fifo_regs->tfnum) & 0x1ff,
>> + in_be16(&psc_dma->fifo_regs->tfstat));
>> }
>>
>> -static int *psc_i2s_get_stat_attr(struct psc_i2s *psc_i2s, const char *name)
>> +static int *psc_i2s_get_stat_attr(struct psc_dma *psc_dma, const char *name)
>> {
>> if (strcmp(name, "playback_underrun") == 0)
>> - return &psc_i2s->stats.underrun_count;
>> + return &psc_dma->stats.underrun_count;
>> if (strcmp(name, "capture_overrun") == 0)
>> - return &psc_i2s->stats.overrun_count;
>> + return &psc_dma->stats.overrun_count;
>>
>> return NULL;
>> }
>> @@ -197,10 +197,10 @@ static int *psc_i2s_get_stat_attr(struct psc_i2s *psc_i2s, const char *name)
>> static ssize_t psc_i2s_stat_show(struct device *dev,
>> struct device_attribute *attr, char *buf)
>> {
>> - struct psc_i2s *psc_i2s = dev_get_drvdata(dev);
>> + struct psc_dma *psc_dma = dev_get_drvdata(dev);
>> int *attrib;
>>
>> - attrib = psc_i2s_get_stat_attr(psc_i2s, attr->attr.name);
>> + attrib = psc_i2s_get_stat_attr(psc_dma, attr->attr.name);
>> if (!attrib)
>> return 0;
>>
>> @@ -212,10 +212,10 @@ static ssize_t psc_i2s_stat_store(struct device *dev,
>> const char *buf,
>> size_t count)
>> {
>> - struct psc_i2s *psc_i2s = dev_get_drvdata(dev);
>> + struct psc_dma *psc_dma = dev_get_drvdata(dev);
>> int *attrib;
>>
>> - attrib = psc_i2s_get_stat_attr(psc_i2s, attr->attr.name);
>> + attrib = psc_i2s_get_stat_attr(psc_dma, attr->attr.name);
>> if (!attrib)
>> return 0;
>>
>> @@ -238,7 +238,7 @@ static int __devinit psc_i2s_of_probe(struct of_device *op,
>> const struct of_device_id *match)
>> {
>> phys_addr_t fifo;
>> - struct psc_i2s *psc_i2s;
>> + struct psc_dma *psc_dma;
>> struct resource res;
>> int size, psc_id, irq, rc;
>> const __be32 *prop;
>> @@ -265,56 +265,56 @@ static int __devinit psc_i2s_of_probe(struct of_device *op,
>> }
>>
>> /* Allocate and initialize the driver private data */
>> - psc_i2s = kzalloc(sizeof *psc_i2s, GFP_KERNEL);
>> - if (!psc_i2s) {
>> + psc_dma = kzalloc(sizeof *psc_dma, GFP_KERNEL);
>> + if (!psc_dma) {
>> iounmap(regs);
>> return -ENOMEM;
>> }
>> - spin_lock_init(&psc_i2s->lock);
>> - psc_i2s->irq = irq;
>> - psc_i2s->psc_regs = regs;
>> - psc_i2s->fifo_regs = regs + sizeof *psc_i2s->psc_regs;
>> - psc_i2s->dev = &op->dev;
>> - psc_i2s->playback.psc_i2s = psc_i2s;
>> - psc_i2s->capture.psc_i2s = psc_i2s;
>> - snprintf(psc_i2s->name, sizeof psc_i2s->name, "PSC%u", psc_id+1);
>> + spin_lock_init(&psc_dma->lock);
>> + psc_dma->irq = irq;
>> + psc_dma->psc_regs = regs;
>> + psc_dma->fifo_regs = regs + sizeof *psc_dma->psc_regs;
>> + psc_dma->dev = &op->dev;
>> + psc_dma->playback.psc_dma = psc_dma;
>> + psc_dma->capture.psc_dma = psc_dma;
>> + snprintf(psc_dma->name, sizeof psc_dma->name, "PSC%u", psc_id+1);
>>
>> /* Fill out the CPU DAI structure */
>> - memcpy(&psc_i2s->dai, &psc_i2s_dai_template, sizeof psc_i2s->dai);
>> - psc_i2s->dai.private_data = psc_i2s;
>> - psc_i2s->dai.name = psc_i2s->name;
>> - psc_i2s->dai.id = psc_id;
>> + memcpy(&psc_dma->dai, &psc_i2s_dai_template, sizeof psc_dma->dai);
>> + psc_dma->dai.private_data = psc_dma;
>> + psc_dma->dai.name = psc_dma->name;
>> + psc_dma->dai.id = psc_id;
>>
>> /* Find the address of the fifo data registers and setup the
>> * DMA tasks */
>> fifo = res.start + offsetof(struct mpc52xx_psc, buffer.buffer_32);
>> - psc_i2s->capture.bcom_task =
>> + psc_dma->capture.bcom_task =
>> bcom_psc_gen_bd_rx_init(psc_id, 10, fifo, 512);
>> - psc_i2s->playback.bcom_task =
>> + psc_dma->playback.bcom_task =
>> bcom_psc_gen_bd_tx_init(psc_id, 10, fifo);
>> - if (!psc_i2s->capture.bcom_task ||
>> - !psc_i2s->playback.bcom_task) {
>> + if (!psc_dma->capture.bcom_task ||
>> + !psc_dma->playback.bcom_task) {
>> dev_err(&op->dev, "Could not allocate bestcomm tasks\n");
>> iounmap(regs);
>> - kfree(psc_i2s);
>> + kfree(psc_dma);
>> return -ENODEV;
>> }
>>
>> /* Disable all interrupts and reset the PSC */
>> - out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0);
>> - out_8(&psc_i2s->psc_regs->command, 3 << 4); /* reset transmitter */
>> - out_8(&psc_i2s->psc_regs->command, 2 << 4); /* reset receiver */
>> - out_8(&psc_i2s->psc_regs->command, 1 << 4); /* reset mode */
>> - out_8(&psc_i2s->psc_regs->command, 4 << 4); /* reset error */
>> + out_be16(&psc_dma->psc_regs->isr_imr.imr, 0);
>> + out_8(&psc_dma->psc_regs->command, 3 << 4); /* reset transmitter */
>> + out_8(&psc_dma->psc_regs->command, 2 << 4); /* reset receiver */
>> + out_8(&psc_dma->psc_regs->command, 1 << 4); /* reset mode */
>> + out_8(&psc_dma->psc_regs->command, 4 << 4); /* reset error */
>>
>> /* Configure the serial interface mode; defaulting to CODEC8 mode */
>> - psc_i2s->sicr = MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR_I2S |
>> + psc_dma->sicr = MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR_I2S |
>> MPC52xx_PSC_SICR_CLKPOL;
>> if (of_get_property(op->node, "fsl,cellslave", NULL))
>> - psc_i2s->sicr |= MPC52xx_PSC_SICR_CELLSLAVE |
>> + psc_dma->sicr |= MPC52xx_PSC_SICR_CELLSLAVE |
>> MPC52xx_PSC_SICR_GENCLK;
>> - out_be32(&psc_i2s->psc_regs->sicr,
>> - psc_i2s->sicr | MPC52xx_PSC_SICR_SIM_CODEC_8);
>> + out_be32(&psc_dma->psc_regs->sicr,
>> + psc_dma->sicr | MPC52xx_PSC_SICR_SIM_CODEC_8);
>>
>> /* Check for the codec handle. If it is not present then we
>> * are done */
>> @@ -325,54 +325,54 @@ static int __devinit psc_i2s_of_probe(struct of_device *op,
>> * First write: RxRdy (FIFO Alarm) generates rx FIFO irq
>> * Second write: register Normal mode for non loopback
>> */
>> - out_8(&psc_i2s->psc_regs->mode, 0);
>> - out_8(&psc_i2s->psc_regs->mode, 0);
>> + out_8(&psc_dma->psc_regs->mode, 0);
>> + out_8(&psc_dma->psc_regs->mode, 0);
>>
>> /* Set the TX and RX fifo alarm thresholds */
>> - out_be16(&psc_i2s->fifo_regs->rfalarm, 0x100);
>> - out_8(&psc_i2s->fifo_regs->rfcntl, 0x4);
>> - out_be16(&psc_i2s->fifo_regs->tfalarm, 0x100);
>> - out_8(&psc_i2s->fifo_regs->tfcntl, 0x7);
>> + out_be16(&psc_dma->fifo_regs->rfalarm, 0x100);
>> + out_8(&psc_dma->fifo_regs->rfcntl, 0x4);
>> + out_be16(&psc_dma->fifo_regs->tfalarm, 0x100);
>> + out_8(&psc_dma->fifo_regs->tfcntl, 0x7);
>>
>> /* Lookup the IRQ numbers */
>> - psc_i2s->playback.irq =
>> - bcom_get_task_irq(psc_i2s->playback.bcom_task);
>> - psc_i2s->capture.irq =
>> - bcom_get_task_irq(psc_i2s->capture.bcom_task);
>> + psc_dma->playback.irq =
>> + bcom_get_task_irq(psc_dma->playback.bcom_task);
>> + psc_dma->capture.irq =
>> + bcom_get_task_irq(psc_dma->capture.bcom_task);
>>
>> /* Save what we've done so it can be found again later */
>> - dev_set_drvdata(&op->dev, psc_i2s);
>> + dev_set_drvdata(&op->dev, psc_dma);
>>
>> /* Register the SYSFS files */
>> - rc = device_create_file(psc_i2s->dev, &dev_attr_status);
>> - rc |= device_create_file(psc_i2s->dev, &dev_attr_capture_overrun);
>> - rc |= device_create_file(psc_i2s->dev, &dev_attr_playback_underrun);
>> + rc = device_create_file(psc_dma->dev, &dev_attr_status);
>> + rc |= device_create_file(psc_dma->dev, &dev_attr_capture_overrun);
>> + rc |= device_create_file(psc_dma->dev, &dev_attr_playback_underrun);
>> if (rc)
>> - dev_info(psc_i2s->dev, "error creating sysfs files\n");
>> + dev_info(psc_dma->dev, "error creating sysfs files\n");
>>
>> - snd_soc_register_platform(&psc_i2s_pcm_soc_platform);
>> + snd_soc_register_platform(&psc_dma_pcm_soc_platform);
>>
>> /* Tell the ASoC OF helpers about it */
>> - of_snd_soc_register_platform(&psc_i2s_pcm_soc_platform, op->node,
>> - &psc_i2s->dai);
>> + of_snd_soc_register_platform(&psc_dma_pcm_soc_platform, op->node,
>> + &psc_dma->dai);
>>
>> return 0;
>> }
>>
>> static int __devexit psc_i2s_of_remove(struct of_device *op)
>> {
>> - struct psc_i2s *psc_i2s = dev_get_drvdata(&op->dev);
>> + struct psc_dma *psc_dma = dev_get_drvdata(&op->dev);
>>
>> dev_dbg(&op->dev, "psc_i2s_remove()\n");
>>
>> - snd_soc_unregister_platform(&psc_i2s_pcm_soc_platform);
>> + snd_soc_unregister_platform(&psc_dma_pcm_soc_platform);
>>
>> - bcom_gen_bd_rx_release(psc_i2s->capture.bcom_task);
>> - bcom_gen_bd_tx_release(psc_i2s->playback.bcom_task);
>> + bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
>> + bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
>>
>> - iounmap(psc_i2s->psc_regs);
>> - iounmap(psc_i2s->fifo_regs);
>> - kfree(psc_i2s);
>> + iounmap(psc_dma->psc_regs);
>> + iounmap(psc_dma->fifo_regs);
>> + kfree(psc_dma);
>> dev_set_drvdata(&op->dev, NULL);
>>
>> return 0;
>>
>>
>
>
>
> --
> Grant Likely, B.Sc., P.Eng.
> Secret Lab Technologies Ltd.
>
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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