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Takashi Iwai2c484df2005-06-30 18:54:04 +02001/*
2 * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip.
3 *
4 * Author: Nicolas Pitre
5 * Created: Dec 02, 2004
6 * Copyright: MontaVista Software Inc.
7 *
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.
11 */
12
13#include <linux/init.h>
14#include <linux/module.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010015#include <linux/platform_device.h>
Takashi Iwai2c484df2005-06-30 18:54:04 +020016
Takashi Iwai2c484df2005-06-30 18:54:04 +020017#include <sound/core.h>
18#include <sound/pcm.h>
19#include <sound/ac97_codec.h>
20#include <sound/initval.h>
Dmitry Baryshkov9c636342008-09-10 05:01:17 +040021#include <sound/pxa2xx-lib.h>
Takashi Iwai2c484df2005-06-30 18:54:04 +020022
Russell Kinga09e64f2008-08-05 16:14:15 +010023#include <mach/hardware.h>
24#include <mach/pxa-regs.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010025#include <mach/audio.h>
Takashi Iwai2c484df2005-06-30 18:54:04 +020026
27#include "pxa2xx-pcm.h"
28
Takashi Iwaid18f8372005-11-17 15:10:38 +010029static void pxa2xx_ac97_reset(struct snd_ac97 *ac97)
Takashi Iwai2c484df2005-06-30 18:54:04 +020030{
Dmitry Baryshkov9c636342008-09-10 05:01:17 +040031 if (!pxa2xx_ac97_try_cold_reset(ac97)) {
32 pxa2xx_ac97_try_warm_reset(ac97);
Takashi Iwai2c484df2005-06-30 18:54:04 +020033 }
34
Dmitry Baryshkov9c636342008-09-10 05:01:17 +040035 pxa2xx_ac97_finish_reset(ac97);
Takashi Iwai2c484df2005-06-30 18:54:04 +020036}
37
Takashi Iwaid18f8372005-11-17 15:10:38 +010038static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
Takashi Iwai2c484df2005-06-30 18:54:04 +020039 .read = pxa2xx_ac97_read,
40 .write = pxa2xx_ac97_write,
41 .reset = pxa2xx_ac97_reset,
42};
43
Takashi Iwaid18f8372005-11-17 15:10:38 +010044static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_out = {
Takashi Iwai2c484df2005-06-30 18:54:04 +020045 .name = "AC97 PCM out",
46 .dev_addr = __PREG(PCDR),
47 .drcmr = &DRCMRTXPCDR,
48 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
49 DCMD_BURST32 | DCMD_WIDTH4,
50};
51
Takashi Iwaid18f8372005-11-17 15:10:38 +010052static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_in = {
Takashi Iwai2c484df2005-06-30 18:54:04 +020053 .name = "AC97 PCM in",
54 .dev_addr = __PREG(PCDR),
55 .drcmr = &DRCMRRXPCDR,
56 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
57 DCMD_BURST32 | DCMD_WIDTH4,
58};
59
Takashi Iwaid18f8372005-11-17 15:10:38 +010060static struct snd_pcm *pxa2xx_ac97_pcm;
61static struct snd_ac97 *pxa2xx_ac97_ac97;
Takashi Iwai2c484df2005-06-30 18:54:04 +020062
Takashi Iwaid18f8372005-11-17 15:10:38 +010063static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream)
Takashi Iwai2c484df2005-06-30 18:54:04 +020064{
Takashi Iwaid18f8372005-11-17 15:10:38 +010065 struct snd_pcm_runtime *runtime = substream->runtime;
Takashi Iwai2c484df2005-06-30 18:54:04 +020066 pxa2xx_audio_ops_t *platform_ops;
67 int r;
68
69 runtime->hw.channels_min = 2;
70 runtime->hw.channels_max = 2;
71
72 r = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
73 AC97_RATES_FRONT_DAC : AC97_RATES_ADC;
74 runtime->hw.rates = pxa2xx_ac97_ac97->rates[r];
75 snd_pcm_limit_hw_rates(runtime);
76
77 platform_ops = substream->pcm->card->dev->platform_data;
78 if (platform_ops && platform_ops->startup)
79 return platform_ops->startup(substream, platform_ops->priv);
80 else
81 return 0;
82}
83
Takashi Iwaid18f8372005-11-17 15:10:38 +010084static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream)
Takashi Iwai2c484df2005-06-30 18:54:04 +020085{
86 pxa2xx_audio_ops_t *platform_ops;
87
88 platform_ops = substream->pcm->card->dev->platform_data;
89 if (platform_ops && platform_ops->shutdown)
90 platform_ops->shutdown(substream, platform_ops->priv);
91}
92
Takashi Iwaid18f8372005-11-17 15:10:38 +010093static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream)
Takashi Iwai2c484df2005-06-30 18:54:04 +020094{
Takashi Iwaid18f8372005-11-17 15:10:38 +010095 struct snd_pcm_runtime *runtime = substream->runtime;
Takashi Iwai2c484df2005-06-30 18:54:04 +020096 int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
97 AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
98 return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate);
99}
100
Takashi Iwaid18f8372005-11-17 15:10:38 +0100101static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = {
Takashi Iwai2c484df2005-06-30 18:54:04 +0200102 .playback_params = &pxa2xx_ac97_pcm_out,
103 .capture_params = &pxa2xx_ac97_pcm_in,
104 .startup = pxa2xx_ac97_pcm_startup,
105 .shutdown = pxa2xx_ac97_pcm_shutdown,
106 .prepare = pxa2xx_ac97_pcm_prepare,
107};
108
109#ifdef CONFIG_PM
110
Takashi Iwaid18f8372005-11-17 15:10:38 +0100111static int pxa2xx_ac97_do_suspend(struct snd_card *card, pm_message_t state)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200112{
Takashi Iwai792a6c52005-11-17 17:19:25 +0100113 pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
114
115 snd_power_change_state(card, SNDRV_CTL_POWER_D3cold);
116 snd_pcm_suspend_all(pxa2xx_ac97_pcm);
117 snd_ac97_suspend(pxa2xx_ac97_ac97);
118 if (platform_ops && platform_ops->suspend)
119 platform_ops->suspend(platform_ops->priv);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200120
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400121 return pxa2xx_ac97_hw_suspend();
Takashi Iwai2c484df2005-06-30 18:54:04 +0200122}
123
Takashi Iwaid18f8372005-11-17 15:10:38 +0100124static int pxa2xx_ac97_do_resume(struct snd_card *card)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200125{
Takashi Iwai792a6c52005-11-17 17:19:25 +0100126 pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400127 int rc;
Takashi Iwai792a6c52005-11-17 17:19:25 +0100128
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400129 rc = pxa2xx_ac97_hw_resume();
130 if (rc)
131 return rc;
132
Takashi Iwai792a6c52005-11-17 17:19:25 +0100133 if (platform_ops && platform_ops->resume)
134 platform_ops->resume(platform_ops->priv);
135 snd_ac97_resume(pxa2xx_ac97_ac97);
136 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200137
138 return 0;
139}
140
Russell King3ae5eae2005-11-09 22:32:44 +0000141static int pxa2xx_ac97_suspend(struct platform_device *dev, pm_message_t state)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200142{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100143 struct snd_card *card = platform_get_drvdata(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200144 int ret = 0;
145
Russell King9480e302005-10-28 09:52:56 -0700146 if (card)
Dirk Opfera55bfdc2005-08-08 16:29:43 +0200147 ret = pxa2xx_ac97_do_suspend(card, PMSG_SUSPEND);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200148
149 return ret;
150}
151
Russell King3ae5eae2005-11-09 22:32:44 +0000152static int pxa2xx_ac97_resume(struct platform_device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200153{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100154 struct snd_card *card = platform_get_drvdata(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200155 int ret = 0;
156
Russell King9480e302005-10-28 09:52:56 -0700157 if (card)
Dirk Opfera55bfdc2005-08-08 16:29:43 +0200158 ret = pxa2xx_ac97_do_resume(card);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200159
160 return ret;
161}
162
163#else
164#define pxa2xx_ac97_suspend NULL
165#define pxa2xx_ac97_resume NULL
166#endif
167
Prarit Bhargava788c6042007-02-13 13:11:11 +0100168static int __devinit pxa2xx_ac97_probe(struct platform_device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200169{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100170 struct snd_card *card;
171 struct snd_ac97_bus *ac97_bus;
172 struct snd_ac97_template ac97_template;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200173 int ret;
174
175 ret = -ENOMEM;
176 card = snd_card_new(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
177 THIS_MODULE, 0);
178 if (!card)
179 goto err;
180
Russell King3ae5eae2005-11-09 22:32:44 +0000181 card->dev = &dev->dev;
182 strncpy(card->driver, dev->dev.driver->name, sizeof(card->driver));
Takashi Iwai2c484df2005-06-30 18:54:04 +0200183
184 ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm);
185 if (ret)
186 goto err;
187
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400188 ret = pxa2xx_ac97_hw_probe(dev);
189 if (ret)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200190 goto err;
191
Takashi Iwai2c484df2005-06-30 18:54:04 +0200192 ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus);
193 if (ret)
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400194 goto err_remove;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200195 memset(&ac97_template, 0, sizeof(ac97_template));
196 ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97);
197 if (ret)
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400198 goto err_remove;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200199
200 snprintf(card->shortname, sizeof(card->shortname),
201 "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97));
202 snprintf(card->longname, sizeof(card->longname),
Russell King3ae5eae2005-11-09 22:32:44 +0000203 "%s (%s)", dev->dev.driver->name, card->mixername);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200204
Takashi Iwaif78dfac2007-12-17 16:24:04 +0100205 snd_card_set_dev(card, &dev->dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200206 ret = snd_card_register(card);
207 if (ret == 0) {
Russell King3ae5eae2005-11-09 22:32:44 +0000208 platform_set_drvdata(dev, card);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200209 return 0;
210 }
211
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400212err_remove:
213 pxa2xx_ac97_hw_remove(dev);
214err:
Takashi Iwai2c484df2005-06-30 18:54:04 +0200215 if (card)
216 snd_card_free(card);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200217 return ret;
218}
219
Prarit Bhargava788c6042007-02-13 13:11:11 +0100220static int __devexit pxa2xx_ac97_remove(struct platform_device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200221{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100222 struct snd_card *card = platform_get_drvdata(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200223
224 if (card) {
225 snd_card_free(card);
Russell King3ae5eae2005-11-09 22:32:44 +0000226 platform_set_drvdata(dev, NULL);
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400227 pxa2xx_ac97_hw_remove(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200228 }
229
230 return 0;
231}
232
Russell King3ae5eae2005-11-09 22:32:44 +0000233static struct platform_driver pxa2xx_ac97_driver = {
Takashi Iwai2c484df2005-06-30 18:54:04 +0200234 .probe = pxa2xx_ac97_probe,
Prarit Bhargava788c6042007-02-13 13:11:11 +0100235 .remove = __devexit_p(pxa2xx_ac97_remove),
Takashi Iwai2c484df2005-06-30 18:54:04 +0200236 .suspend = pxa2xx_ac97_suspend,
237 .resume = pxa2xx_ac97_resume,
Russell King3ae5eae2005-11-09 22:32:44 +0000238 .driver = {
239 .name = "pxa2xx-ac97",
Kay Sievers8b45a202008-04-14 13:33:36 +0200240 .owner = THIS_MODULE,
Russell King3ae5eae2005-11-09 22:32:44 +0000241 },
Takashi Iwai2c484df2005-06-30 18:54:04 +0200242};
243
244static int __init pxa2xx_ac97_init(void)
245{
Russell King3ae5eae2005-11-09 22:32:44 +0000246 return platform_driver_register(&pxa2xx_ac97_driver);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200247}
248
249static void __exit pxa2xx_ac97_exit(void)
250{
Russell King3ae5eae2005-11-09 22:32:44 +0000251 platform_driver_unregister(&pxa2xx_ac97_driver);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200252}
253
254module_init(pxa2xx_ac97_init);
255module_exit(pxa2xx_ac97_exit);
256
257MODULE_AUTHOR("Nicolas Pitre");
258MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
259MODULE_LICENSE("GPL");
Kay Sievers8b45a202008-04-14 13:33:36 +0200260MODULE_ALIAS("platform:pxa2xx-ac97");