2 * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip.
4 * Author: Nicolas Pitre
5 * Created: Dec 02, 2004
6 * Copyright: MontaVista Software Inc.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include <linux/init.h>
15 #include <linux/module.h>
16 #include <linux/platform_device.h>
18 #include <sound/core.h>
19 #include <sound/ac97_codec.h>
20 #include <sound/soc.h>
21 #include <sound/pxa2xx-lib.h>
23 #include <mach/hardware.h>
24 #include <mach/regs-ac97.h>
26 #include <mach/audio.h>
28 #include "pxa2xx-ac97.h"
30 static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
32 pxa2xx_ac97_try_warm_reset(ac97);
34 pxa2xx_ac97_finish_reset(ac97);
37 static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
39 pxa2xx_ac97_try_cold_reset(ac97);
41 pxa2xx_ac97_finish_reset(ac97);
44 struct snd_ac97_bus_ops soc_ac97_ops = {
45 .read = pxa2xx_ac97_read,
46 .write = pxa2xx_ac97_write,
47 .warm_reset = pxa2xx_ac97_warm_reset,
48 .reset = pxa2xx_ac97_cold_reset,
50 EXPORT_SYMBOL_GPL(soc_ac97_ops);
52 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_out = {
53 .name = "AC97 PCM Stereo out",
54 .dev_addr = __PREG(PCDR),
56 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
57 DCMD_BURST32 | DCMD_WIDTH4,
60 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_in = {
61 .name = "AC97 PCM Stereo in",
62 .dev_addr = __PREG(PCDR),
64 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
65 DCMD_BURST32 | DCMD_WIDTH4,
68 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_out = {
69 .name = "AC97 Aux PCM (Slot 5) Mono out",
70 .dev_addr = __PREG(MODR),
72 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
73 DCMD_BURST16 | DCMD_WIDTH2,
76 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_in = {
77 .name = "AC97 Aux PCM (Slot 5) Mono in",
78 .dev_addr = __PREG(MODR),
80 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
81 DCMD_BURST16 | DCMD_WIDTH2,
84 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_mic_mono_in = {
85 .name = "AC97 Mic PCM (Slot 6) Mono in",
86 .dev_addr = __PREG(MCDR),
88 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
89 DCMD_BURST16 | DCMD_WIDTH2,
93 static int pxa2xx_ac97_suspend(struct snd_soc_dai *dai)
95 return pxa2xx_ac97_hw_suspend();
98 static int pxa2xx_ac97_resume(struct snd_soc_dai *dai)
100 return pxa2xx_ac97_hw_resume();
104 #define pxa2xx_ac97_suspend NULL
105 #define pxa2xx_ac97_resume NULL
108 static int pxa2xx_ac97_probe(struct snd_soc_dai *dai)
110 return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev));
113 static int pxa2xx_ac97_remove(struct snd_soc_dai *dai)
115 pxa2xx_ac97_hw_remove(to_platform_device(dai->dev));
119 static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,
120 struct snd_pcm_hw_params *params,
121 struct snd_soc_dai *cpu_dai)
123 struct pxa2xx_pcm_dma_params *dma_data;
125 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
126 dma_data = &pxa2xx_ac97_pcm_stereo_out;
128 dma_data = &pxa2xx_ac97_pcm_stereo_in;
130 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
135 static int pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream *substream,
136 struct snd_pcm_hw_params *params,
137 struct snd_soc_dai *cpu_dai)
139 struct pxa2xx_pcm_dma_params *dma_data;
141 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
142 dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
144 dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
146 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
151 static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream,
152 struct snd_pcm_hw_params *params,
153 struct snd_soc_dai *cpu_dai)
155 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
158 snd_soc_dai_set_dma_data(cpu_dai, substream,
159 &pxa2xx_ac97_pcm_mic_mono_in);
164 #define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
165 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
166 SNDRV_PCM_RATE_48000)
168 static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
169 .hw_params = pxa2xx_ac97_hw_params,
172 static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
173 .hw_params = pxa2xx_ac97_hw_aux_params,
176 static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
177 .hw_params = pxa2xx_ac97_hw_mic_params,
181 * There is only 1 physical AC97 interface for pxa2xx, but it
182 * has extra fifo's that can be used for aux DACs and ADCs.
184 static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
186 .name = "pxa2xx-ac97",
188 .probe = pxa2xx_ac97_probe,
189 .remove = pxa2xx_ac97_remove,
190 .suspend = pxa2xx_ac97_suspend,
191 .resume = pxa2xx_ac97_resume,
193 .stream_name = "AC97 Playback",
196 .rates = PXA2XX_AC97_RATES,
197 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
199 .stream_name = "AC97 Capture",
202 .rates = PXA2XX_AC97_RATES,
203 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
204 .ops = &pxa_ac97_hifi_dai_ops,
207 .name = "pxa2xx-ac97-aux",
210 .stream_name = "AC97 Aux Playback",
213 .rates = PXA2XX_AC97_RATES,
214 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
216 .stream_name = "AC97 Aux Capture",
219 .rates = PXA2XX_AC97_RATES,
220 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
221 .ops = &pxa_ac97_aux_dai_ops,
224 .name = "pxa2xx-ac97-mic",
227 .stream_name = "AC97 Mic Capture",
230 .rates = PXA2XX_AC97_RATES,
231 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
232 .ops = &pxa_ac97_mic_dai_ops,
236 static const struct snd_soc_component_driver pxa_ac97_component = {
240 static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
242 if (pdev->id != -1) {
243 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
247 /* Punt most of the init to the SoC probe; we may need the machine
248 * driver to do interesting things with the clocking to get us up
251 return snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
252 pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver));
255 static int pxa2xx_ac97_dev_remove(struct platform_device *pdev)
257 snd_soc_unregister_component(&pdev->dev);
261 static struct platform_driver pxa2xx_ac97_driver = {
262 .probe = pxa2xx_ac97_dev_probe,
263 .remove = pxa2xx_ac97_dev_remove,
265 .name = "pxa2xx-ac97",
266 .owner = THIS_MODULE,
270 module_platform_driver(pxa2xx_ac97_driver);
272 MODULE_AUTHOR("Nicolas Pitre");
273 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
274 MODULE_LICENSE("GPL");