/* * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip. * * Author: Nicolas Pitre * Created: Dec 02, 2004 * Copyright: 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 version 2 as * published by the Free Software Foundation. */ #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/core.h> #include <sound/ac97_codec.h> #include <sound/soc.h> #include <sound/pxa2xx-lib.h> #include <sound/dmaengine_pcm.h> #include <mach/hardware.h> #include <mach/regs-ac97.h> #include <mach/audio.h> #include "pxa2xx-ac97.h" static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97) { pxa2xx_ac97_try_warm_reset(ac97); pxa2xx_ac97_finish_reset(ac97); } static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97) { pxa2xx_ac97_try_cold_reset(ac97); pxa2xx_ac97_finish_reset(ac97); } static struct snd_ac97_bus_ops pxa2xx_ac97_ops = { .read = pxa2xx_ac97_read, .write = pxa2xx_ac97_write, .warm_reset = pxa2xx_ac97_warm_reset, .reset = pxa2xx_ac97_cold_reset, }; static struct pxad_param pxa2xx_ac97_pcm_stereo_in_req = { .prio = PXAD_PRIO_LOWEST, .drcmr = 11, }; static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = { .addr = __PREG(PCDR), .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, .maxburst = 32, .filter_data = &pxa2xx_ac97_pcm_stereo_in_req, }; static struct pxad_param pxa2xx_ac97_pcm_stereo_out_req = { .prio = PXAD_PRIO_LOWEST, .drcmr = 12, }; static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = { .addr = __PREG(PCDR), .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, .maxburst = 32, .filter_data = &pxa2xx_ac97_pcm_stereo_out_req, }; static struct pxad_param pxa2xx_ac97_pcm_aux_mono_out_req = { .prio = PXAD_PRIO_LOWEST, .drcmr = 10, }; static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_out = { .addr = __PREG(MODR), .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, .maxburst = 16, .filter_data = &pxa2xx_ac97_pcm_aux_mono_out_req, }; static struct pxad_param pxa2xx_ac97_pcm_aux_mono_in_req = { .prio = PXAD_PRIO_LOWEST, .drcmr = 9, }; static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = { .addr = __PREG(MODR), .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, .maxburst = 16, .filter_data = &pxa2xx_ac97_pcm_aux_mono_in_req, }; static struct pxad_param pxa2xx_ac97_pcm_aux_mic_mono_req = { .prio = PXAD_PRIO_LOWEST, .drcmr = 8, }; static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = { .addr = __PREG(MCDR), .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, .maxburst = 16, .filter_data = &pxa2xx_ac97_pcm_aux_mic_mono_req, }; 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; else 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", .bus_control = true, .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", .bus_control = true, .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", .bus_control = true, .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", }; static int pxa2xx_ac97_dev_probe(struct platform_device *pdev) { int ret; if (pdev->id != -1) { dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n"); return -ENXIO; } ret = pxa2xx_ac97_hw_probe(pdev); if (ret) { dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret); return ret; } ret = snd_soc_set_ac97_ops(&pxa2xx_ac97_ops); if (ret != 0) return ret; /* 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 snd_soc_register_component(&pdev->dev, &pxa_ac97_component, pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver)); } static int pxa2xx_ac97_dev_remove(struct platform_device *pdev) { snd_soc_unregister_component(&pdev->dev); snd_soc_set_ac97_ops(NULL); pxa2xx_ac97_hw_remove(pdev); return 0; } #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 = pxa2xx_ac97_dev_remove, .driver = { .name = "pxa2xx-ac97", #ifdef CONFIG_PM_SLEEP .pm = &pxa2xx_ac97_pm_ops, #endif }, }; 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");