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