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307 lines
7.9 KiB
307 lines
7.9 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip. |
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* |
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* Author: Nicolas Pitre |
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* Created: Dec 02, 2004 |
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* Copyright: MontaVista Software Inc. |
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*/ |
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#include <linux/init.h> |
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#include <linux/io.h> |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/dmaengine.h> |
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#include <linux/dma/pxa-dma.h> |
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#include <sound/ac97/controller.h> |
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#include <sound/core.h> |
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#include <sound/ac97_codec.h> |
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#include <sound/soc.h> |
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#include <sound/pxa2xx-lib.h> |
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#include <sound/dmaengine_pcm.h> |
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#include <linux/platform_data/asoc-pxa.h> |
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#define PCDR 0x0040 /* PCM FIFO Data Register */ |
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#define MODR 0x0140 /* Modem FIFO Data Register */ |
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#define MCDR 0x0060 /* Mic-in FIFO Data Register */ |
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static void pxa2xx_ac97_warm_reset(struct ac97_controller *adrv) |
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{ |
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pxa2xx_ac97_try_warm_reset(); |
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pxa2xx_ac97_finish_reset(); |
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} |
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static void pxa2xx_ac97_cold_reset(struct ac97_controller *adrv) |
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{ |
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pxa2xx_ac97_try_cold_reset(); |
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pxa2xx_ac97_finish_reset(); |
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} |
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static int pxa2xx_ac97_read_actrl(struct ac97_controller *adrv, int slot, |
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unsigned short reg) |
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{ |
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return pxa2xx_ac97_read(slot, reg); |
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} |
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static int pxa2xx_ac97_write_actrl(struct ac97_controller *adrv, int slot, |
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unsigned short reg, unsigned short val) |
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{ |
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return pxa2xx_ac97_write(slot, reg, val); |
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} |
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static struct ac97_controller_ops pxa2xx_ac97_ops = { |
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.read = pxa2xx_ac97_read_actrl, |
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.write = pxa2xx_ac97_write_actrl, |
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.warm_reset = pxa2xx_ac97_warm_reset, |
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.reset = pxa2xx_ac97_cold_reset, |
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}; |
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static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = { |
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.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, |
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.chan_name = "pcm_pcm_stereo_in", |
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.maxburst = 32, |
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}; |
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static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = { |
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.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, |
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.chan_name = "pcm_pcm_stereo_out", |
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.maxburst = 32, |
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}; |
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static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_out = { |
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.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, |
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.chan_name = "pcm_aux_mono_out", |
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.maxburst = 16, |
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}; |
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static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = { |
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.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, |
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.chan_name = "pcm_aux_mono_in", |
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.maxburst = 16, |
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}; |
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static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = { |
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.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, |
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.chan_name = "pcm_aux_mic_mono", |
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.maxburst = 16, |
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}; |
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static int pxa2xx_ac97_hifi_startup(struct snd_pcm_substream *substream, |
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struct snd_soc_dai *cpu_dai) |
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{ |
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struct snd_dmaengine_dai_dma_data *dma_data; |
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
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dma_data = &pxa2xx_ac97_pcm_stereo_out; |
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else |
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dma_data = &pxa2xx_ac97_pcm_stereo_in; |
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snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); |
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return 0; |
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} |
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static int pxa2xx_ac97_aux_startup(struct snd_pcm_substream *substream, |
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struct snd_soc_dai *cpu_dai) |
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{ |
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struct snd_dmaengine_dai_dma_data *dma_data; |
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
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dma_data = &pxa2xx_ac97_pcm_aux_mono_out; |
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else |
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dma_data = &pxa2xx_ac97_pcm_aux_mono_in; |
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snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); |
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return 0; |
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} |
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static int pxa2xx_ac97_mic_startup(struct snd_pcm_substream *substream, |
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struct snd_soc_dai *cpu_dai) |
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{ |
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
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return -ENODEV; |
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snd_soc_dai_set_dma_data(cpu_dai, substream, |
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&pxa2xx_ac97_pcm_mic_mono_in); |
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return 0; |
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} |
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#define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ |
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SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ |
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SNDRV_PCM_RATE_48000) |
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static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = { |
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.startup = pxa2xx_ac97_hifi_startup, |
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}; |
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static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = { |
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.startup = pxa2xx_ac97_aux_startup, |
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}; |
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static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = { |
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.startup = pxa2xx_ac97_mic_startup, |
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}; |
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/* |
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* There is only 1 physical AC97 interface for pxa2xx, but it |
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* has extra fifo's that can be used for aux DACs and ADCs. |
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*/ |
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static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = { |
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{ |
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.name = "pxa2xx-ac97", |
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.playback = { |
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.stream_name = "AC97 Playback", |
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.channels_min = 2, |
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.channels_max = 2, |
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.rates = PXA2XX_AC97_RATES, |
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.formats = SNDRV_PCM_FMTBIT_S16_LE,}, |
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.capture = { |
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.stream_name = "AC97 Capture", |
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.channels_min = 2, |
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.channels_max = 2, |
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.rates = PXA2XX_AC97_RATES, |
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.formats = SNDRV_PCM_FMTBIT_S16_LE,}, |
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.ops = &pxa_ac97_hifi_dai_ops, |
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}, |
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{ |
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.name = "pxa2xx-ac97-aux", |
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.playback = { |
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.stream_name = "AC97 Aux Playback", |
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.channels_min = 1, |
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.channels_max = 1, |
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.rates = PXA2XX_AC97_RATES, |
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.formats = SNDRV_PCM_FMTBIT_S16_LE,}, |
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.capture = { |
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.stream_name = "AC97 Aux Capture", |
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.channels_min = 1, |
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.channels_max = 1, |
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.rates = PXA2XX_AC97_RATES, |
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.formats = SNDRV_PCM_FMTBIT_S16_LE,}, |
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.ops = &pxa_ac97_aux_dai_ops, |
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}, |
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{ |
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.name = "pxa2xx-ac97-mic", |
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.capture = { |
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.stream_name = "AC97 Mic Capture", |
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.channels_min = 1, |
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.channels_max = 1, |
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.rates = PXA2XX_AC97_RATES, |
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.formats = SNDRV_PCM_FMTBIT_S16_LE,}, |
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.ops = &pxa_ac97_mic_dai_ops, |
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}, |
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}; |
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static const struct snd_soc_component_driver pxa_ac97_component = { |
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.name = "pxa-ac97", |
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.pcm_construct = pxa2xx_soc_pcm_new, |
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.open = pxa2xx_soc_pcm_open, |
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.close = pxa2xx_soc_pcm_close, |
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.hw_params = pxa2xx_soc_pcm_hw_params, |
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.prepare = pxa2xx_soc_pcm_prepare, |
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.trigger = pxa2xx_soc_pcm_trigger, |
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.pointer = pxa2xx_soc_pcm_pointer, |
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}; |
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#ifdef CONFIG_OF |
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static const struct of_device_id pxa2xx_ac97_dt_ids[] = { |
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{ .compatible = "marvell,pxa250-ac97", }, |
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{ .compatible = "marvell,pxa270-ac97", }, |
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{ .compatible = "marvell,pxa300-ac97", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, pxa2xx_ac97_dt_ids); |
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#endif |
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static int pxa2xx_ac97_dev_probe(struct platform_device *pdev) |
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{ |
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int ret; |
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struct ac97_controller *ctrl; |
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pxa2xx_audio_ops_t *pdata = pdev->dev.platform_data; |
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struct resource *regs; |
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void **codecs_pdata; |
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if (pdev->id != -1) { |
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dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n"); |
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return -ENXIO; |
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} |
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regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
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if (!regs) |
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return -ENXIO; |
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pxa2xx_ac97_pcm_stereo_in.addr = regs->start + PCDR; |
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pxa2xx_ac97_pcm_stereo_out.addr = regs->start + PCDR; |
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pxa2xx_ac97_pcm_aux_mono_out.addr = regs->start + MODR; |
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pxa2xx_ac97_pcm_aux_mono_in.addr = regs->start + MODR; |
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pxa2xx_ac97_pcm_mic_mono_in.addr = regs->start + MCDR; |
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ret = pxa2xx_ac97_hw_probe(pdev); |
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if (ret) { |
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dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret); |
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return ret; |
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} |
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codecs_pdata = pdata ? pdata->codec_pdata : NULL; |
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ctrl = snd_ac97_controller_register(&pxa2xx_ac97_ops, &pdev->dev, |
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AC97_SLOTS_AVAILABLE_ALL, |
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codecs_pdata); |
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if (IS_ERR(ctrl)) |
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return PTR_ERR(ctrl); |
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platform_set_drvdata(pdev, ctrl); |
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/* Punt most of the init to the SoC probe; we may need the machine |
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* driver to do interesting things with the clocking to get us up |
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* and running. |
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*/ |
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return devm_snd_soc_register_component(&pdev->dev, &pxa_ac97_component, |
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pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver)); |
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} |
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static int pxa2xx_ac97_dev_remove(struct platform_device *pdev) |
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{ |
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struct ac97_controller *ctrl = platform_get_drvdata(pdev); |
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snd_ac97_controller_unregister(ctrl); |
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pxa2xx_ac97_hw_remove(pdev); |
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return 0; |
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} |
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#ifdef CONFIG_PM_SLEEP |
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static int pxa2xx_ac97_dev_suspend(struct device *dev) |
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{ |
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return pxa2xx_ac97_hw_suspend(); |
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} |
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static int pxa2xx_ac97_dev_resume(struct device *dev) |
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{ |
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return pxa2xx_ac97_hw_resume(); |
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} |
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static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, |
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pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume); |
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#endif |
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static struct platform_driver pxa2xx_ac97_driver = { |
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.probe = pxa2xx_ac97_dev_probe, |
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.remove = pxa2xx_ac97_dev_remove, |
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.driver = { |
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.name = "pxa2xx-ac97", |
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#ifdef CONFIG_PM_SLEEP |
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.pm = &pxa2xx_ac97_pm_ops, |
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#endif |
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.of_match_table = of_match_ptr(pxa2xx_ac97_dt_ids), |
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}, |
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}; |
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module_platform_driver(pxa2xx_ac97_driver); |
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MODULE_AUTHOR("Nicolas Pitre"); |
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MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("platform:pxa2xx-ac97");
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