diff options
Diffstat (limited to 'sound/soc/atmel/atmel-pcm-pdc.c')
| -rw-r--r-- | sound/soc/atmel/atmel-pcm-pdc.c | 148 |
1 files changed, 39 insertions, 109 deletions
diff --git a/sound/soc/atmel/atmel-pcm-pdc.c b/sound/soc/atmel/atmel-pcm-pdc.c index 054ea4d9326a..7db8df85c54f 100644 --- a/sound/soc/atmel/atmel-pcm-pdc.c +++ b/sound/soc/atmel/atmel-pcm-pdc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * atmel-pcm.c -- ALSA PCM interface for the Atmel atmel SoC. * @@ -15,20 +16,6 @@ * Author: Nicolas Pitre * Created: Nov 30, 2004 * Copyright: (C) 2004 MontaVista Software, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/module.h> @@ -47,6 +34,23 @@ #include "atmel-pcm.h" +static int atmel_pcm_new(struct snd_soc_component *component, + struct snd_soc_pcm_runtime *rtd) +{ + struct snd_card *card = rtd->card->snd_card; + int ret; + + ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32)); + if (ret) + return ret; + + snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV, + card->dev, ATMEL_SSC_DMABUF_SIZE, + ATMEL_SSC_DMABUF_SIZE); + + return 0; +} + /*--------------------------------------------------------------------------*\ * Hardware definition \*--------------------------------------------------------------------------*/ @@ -58,7 +62,6 @@ static const struct snd_pcm_hardware atmel_pcm_hardware = { SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_PAUSE, - .formats = SNDRV_PCM_FMTBIT_S16_LE, .period_bytes_min = 32, .period_bytes_max = 8192, .periods_min = 2, @@ -77,12 +80,6 @@ struct atmel_runtime_data { size_t period_size; dma_addr_t period_ptr; /* physical address of next period */ - - /* PDC register save */ - u32 pdc_xpr_save; - u32 pdc_xcr_save; - u32 pdc_xnpr_save; - u32 pdc_xncr_save; }; /*--------------------------------------------------------------------------*\ @@ -137,20 +134,18 @@ static void atmel_pcm_dma_irq(u32 ssc_sr, /*--------------------------------------------------------------------------*\ * PCM operations \*--------------------------------------------------------------------------*/ -static int atmel_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params) +static int atmel_pcm_hw_params(struct snd_soc_component *component, + struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) { struct snd_pcm_runtime *runtime = substream->runtime; struct atmel_runtime_data *prtd = runtime->private_data; - struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); /* this may get called several times by oss emulation * with different params */ - snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); - runtime->dma_bytes = params_buffer_bytes(params); - - prtd->params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + prtd->params = snd_soc_dai_get_dma_data(snd_soc_rtd_to_cpu(rtd, 0), substream); prtd->params->dma_intr_handler = atmel_pcm_dma_irq; prtd->dma_buffer = runtime->dma_addr; @@ -166,7 +161,8 @@ static int atmel_pcm_hw_params(struct snd_pcm_substream *substream, return 0; } -static int atmel_pcm_hw_free(struct snd_pcm_substream *substream) +static int atmel_pcm_hw_free(struct snd_soc_component *component, + struct snd_pcm_substream *substream) { struct atmel_runtime_data *prtd = substream->runtime->private_data; struct atmel_pcm_dma_params *params = prtd->params; @@ -180,7 +176,8 @@ 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_prepare(struct snd_soc_component *component, + struct snd_pcm_substream *substream) { struct atmel_runtime_data *prtd = substream->runtime->private_data; struct atmel_pcm_dma_params *params = prtd->params; @@ -192,8 +189,8 @@ static int atmel_pcm_prepare(struct snd_pcm_substream *substream) return 0; } -static int atmel_pcm_trigger(struct snd_pcm_substream *substream, - int cmd) +static int atmel_pcm_trigger(struct snd_soc_component *component, + struct snd_pcm_substream *substream, int cmd) { struct snd_pcm_runtime *rtd = substream->runtime; struct atmel_runtime_data *prtd = rtd->private_data; @@ -258,8 +255,8 @@ static int atmel_pcm_trigger(struct snd_pcm_substream *substream, return ret; } -static snd_pcm_uframes_t atmel_pcm_pointer( - struct snd_pcm_substream *substream) +static snd_pcm_uframes_t atmel_pcm_pointer(struct snd_soc_component *component, + struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct atmel_runtime_data *prtd = runtime->private_data; @@ -276,7 +273,8 @@ static snd_pcm_uframes_t atmel_pcm_pointer( return x; } -static int atmel_pcm_open(struct snd_pcm_substream *substream) +static int atmel_pcm_open(struct snd_soc_component *component, + struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct atmel_runtime_data *prtd; @@ -301,7 +299,8 @@ static int atmel_pcm_open(struct snd_pcm_substream *substream) return ret; } -static int atmel_pcm_close(struct snd_pcm_substream *substream) +static int atmel_pcm_close(struct snd_soc_component *component, + struct snd_pcm_substream *substream) { struct atmel_runtime_data *prtd = substream->runtime->private_data; @@ -309,93 +308,24 @@ static int atmel_pcm_close(struct snd_pcm_substream *substream) return 0; } -static struct snd_pcm_ops atmel_pcm_ops = { +static const struct snd_soc_component_driver atmel_soc_platform = { .open = atmel_pcm_open, .close = atmel_pcm_close, - .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, - .mmap = atmel_pcm_mmap, -}; - - -/*--------------------------------------------------------------------------*\ - * ASoC platform driver -\*--------------------------------------------------------------------------*/ -#ifdef CONFIG_PM -static int atmel_pcm_suspend(struct snd_soc_dai *dai) -{ - struct snd_pcm_runtime *runtime = dai->runtime; - struct atmel_runtime_data *prtd; - struct atmel_pcm_dma_params *params; - - if (!runtime) - return 0; - - prtd = runtime->private_data; - params = prtd->params; - - /* disable the PDC and save the PDC registers */ - - ssc_writel(params->ssc->regs, PDC_PTCR, params->mask->pdc_disable); - - prtd->pdc_xpr_save = ssc_readx(params->ssc->regs, params->pdc->xpr); - prtd->pdc_xcr_save = ssc_readx(params->ssc->regs, params->pdc->xcr); - prtd->pdc_xnpr_save = ssc_readx(params->ssc->regs, params->pdc->xnpr); - prtd->pdc_xncr_save = ssc_readx(params->ssc->regs, params->pdc->xncr); - - return 0; -} - -static int atmel_pcm_resume(struct snd_soc_dai *dai) -{ - struct snd_pcm_runtime *runtime = dai->runtime; - struct atmel_runtime_data *prtd; - struct atmel_pcm_dma_params *params; - - if (!runtime) - return 0; - - prtd = runtime->private_data; - params = prtd->params; - - /* restore the PDC registers and enable the PDC */ - ssc_writex(params->ssc->regs, params->pdc->xpr, prtd->pdc_xpr_save); - ssc_writex(params->ssc->regs, params->pdc->xcr, prtd->pdc_xcr_save); - ssc_writex(params->ssc->regs, params->pdc->xnpr, prtd->pdc_xnpr_save); - ssc_writex(params->ssc->regs, params->pdc->xncr, prtd->pdc_xncr_save); - - ssc_writel(params->ssc->regs, PDC_PTCR, params->mask->pdc_enable); - return 0; -} -#else -#define atmel_pcm_suspend NULL -#define atmel_pcm_resume NULL -#endif - -static struct snd_soc_platform_driver atmel_soc_platform = { - .ops = &atmel_pcm_ops, - .pcm_new = atmel_pcm_new, - .pcm_free = atmel_pcm_free, - .suspend = atmel_pcm_suspend, - .resume = atmel_pcm_resume, + .pcm_construct = atmel_pcm_new, }; int atmel_pcm_pdc_platform_register(struct device *dev) { - return snd_soc_register_platform(dev, &atmel_soc_platform); + return devm_snd_soc_register_component(dev, &atmel_soc_platform, + NULL, 0); } EXPORT_SYMBOL(atmel_pcm_pdc_platform_register); -void atmel_pcm_pdc_platform_unregister(struct device *dev) -{ - snd_soc_unregister_platform(dev); -} -EXPORT_SYMBOL(atmel_pcm_pdc_platform_unregister); - MODULE_AUTHOR("Sedji Gaouaou <sedji.gaouaou@atmel.com>"); MODULE_DESCRIPTION("Atmel PCM module"); MODULE_LICENSE("GPL"); |