mpc5200_dma.c (a4654e9bde4ecedb4921e6c8fe2088114bdff1b3) mpc5200_dma.c (17198ae76e0ffcb891d34f59ad3725d9c536ac99)
1// SPDX-License-Identifier: GPL-2.0-only
2//
3// Freescale MPC5200 PSC DMA
4// ALSA SoC Platform driver
5//
6// Copyright (C) 2008 Secret Lab Technologies Ltd.
7// Copyright (C) 2009 Jon Smirl, Digispeaker
8

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110 *
111 * This function is called by ALSA to start, stop, pause, and resume the DMA
112 * transfer of data.
113 */
114static int psc_dma_trigger(struct snd_soc_component *component,
115 struct snd_pcm_substream *substream, int cmd)
116{
117 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1// SPDX-License-Identifier: GPL-2.0-only
2//
3// Freescale MPC5200 PSC DMA
4// ALSA SoC Platform driver
5//
6// Copyright (C) 2008 Secret Lab Technologies Ltd.
7// Copyright (C) 2009 Jon Smirl, Digispeaker
8

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110 *
111 * This function is called by ALSA to start, stop, pause, and resume the DMA
112 * transfer of data.
113 */
114static int psc_dma_trigger(struct snd_soc_component *component,
115 struct snd_pcm_substream *substream, int cmd)
116{
117 struct snd_soc_pcm_runtime *rtd = substream->private_data;
118 struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
118 struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0));
119 struct snd_pcm_runtime *runtime = substream->runtime;
120 struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma);
121 struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
122 u16 imr;
123 unsigned long flags;
124 int i;
125
126 switch (cmd) {

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212 .fifo_size = 512,
213};
214
215static int psc_dma_open(struct snd_soc_component *component,
216 struct snd_pcm_substream *substream)
217{
218 struct snd_pcm_runtime *runtime = substream->runtime;
219 struct snd_soc_pcm_runtime *rtd = substream->private_data;
119 struct snd_pcm_runtime *runtime = substream->runtime;
120 struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma);
121 struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
122 u16 imr;
123 unsigned long flags;
124 int i;
125
126 switch (cmd) {

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212 .fifo_size = 512,
213};
214
215static int psc_dma_open(struct snd_soc_component *component,
216 struct snd_pcm_substream *substream)
217{
218 struct snd_pcm_runtime *runtime = substream->runtime;
219 struct snd_soc_pcm_runtime *rtd = substream->private_data;
220 struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
220 struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0));
221 struct psc_dma_stream *s;
222 int rc;
223
224 dev_dbg(psc_dma->dev, "psc_dma_open(substream=%p)\n", substream);
225
226 if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
227 s = &psc_dma->capture;
228 else

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240 s->stream = substream;
241 return 0;
242}
243
244static int psc_dma_close(struct snd_soc_component *component,
245 struct snd_pcm_substream *substream)
246{
247 struct snd_soc_pcm_runtime *rtd = substream->private_data;
221 struct psc_dma_stream *s;
222 int rc;
223
224 dev_dbg(psc_dma->dev, "psc_dma_open(substream=%p)\n", substream);
225
226 if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
227 s = &psc_dma->capture;
228 else

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240 s->stream = substream;
241 return 0;
242}
243
244static int psc_dma_close(struct snd_soc_component *component,
245 struct snd_pcm_substream *substream)
246{
247 struct snd_soc_pcm_runtime *rtd = substream->private_data;
248 struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
248 struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0));
249 struct psc_dma_stream *s;
250
251 dev_dbg(psc_dma->dev, "psc_dma_close(substream=%p)\n", substream);
252
253 if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
254 s = &psc_dma->capture;
255 else
256 s = &psc_dma->playback;

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266 return 0;
267}
268
269static snd_pcm_uframes_t
270psc_dma_pointer(struct snd_soc_component *component,
271 struct snd_pcm_substream *substream)
272{
273 struct snd_soc_pcm_runtime *rtd = substream->private_data;
249 struct psc_dma_stream *s;
250
251 dev_dbg(psc_dma->dev, "psc_dma_close(substream=%p)\n", substream);
252
253 if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
254 s = &psc_dma->capture;
255 else
256 s = &psc_dma->playback;

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266 return 0;
267}
268
269static snd_pcm_uframes_t
270psc_dma_pointer(struct snd_soc_component *component,
271 struct snd_pcm_substream *substream)
272{
273 struct snd_soc_pcm_runtime *rtd = substream->private_data;
274 struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
274 struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0));
275 struct psc_dma_stream *s;
276 dma_addr_t count;
277
278 if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
279 s = &psc_dma->capture;
280 else
281 s = &psc_dma->playback;
282

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293
294 return 0;
295}
296
297static int psc_dma_new(struct snd_soc_component *component,
298 struct snd_soc_pcm_runtime *rtd)
299{
300 struct snd_card *card = rtd->card->snd_card;
275 struct psc_dma_stream *s;
276 dma_addr_t count;
277
278 if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
279 s = &psc_dma->capture;
280 else
281 s = &psc_dma->playback;
282

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293
294 return 0;
295}
296
297static int psc_dma_new(struct snd_soc_component *component,
298 struct snd_soc_pcm_runtime *rtd)
299{
300 struct snd_card *card = rtd->card->snd_card;
301 struct snd_soc_dai *dai = rtd->cpu_dai;
301 struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0);
302 struct snd_pcm *pcm = rtd->pcm;
303 size_t size = psc_dma_hardware.buffer_bytes_max;
304 int rc;
305
306 dev_dbg(component->dev, "psc_dma_new(card=%p, dai=%p, pcm=%p)\n",
307 card, dai, pcm);
308
309 rc = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));

--- 205 unchanged lines hidden --- 		302 struct snd_pcm *pcm = rtd->pcm;
303 size_t size = psc_dma_hardware.buffer_bytes_max;
304 int rc;
305
306 dev_dbg(component->dev, "psc_dma_new(card=%p, dai=%p, pcm=%p)\n",
307 card, dai, pcm);
308
309 rc = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));

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