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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
Eric Miao1f017a92008-11-28 14:19:33 +080023#include <mach/regs-ac97.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010024#include <mach/audio.h>
Takashi Iwai2c484df2005-06-30 18:54:04 +020025
26#include "pxa2xx-pcm.h"
27
Takashi Iwaid18f8372005-11-17 15:10:38 +010028static void pxa2xx_ac97_reset(struct snd_ac97 *ac97)
Takashi Iwai2c484df2005-06-30 18:54:04 +020029{
Dmitry Baryshkov9c636342008-09-10 05:01:17 +040030 if (!pxa2xx_ac97_try_cold_reset(ac97)) {
31 pxa2xx_ac97_try_warm_reset(ac97);
Takashi Iwai2c484df2005-06-30 18:54:04 +020032 }
33
Dmitry Baryshkov9c636342008-09-10 05:01:17 +040034 pxa2xx_ac97_finish_reset(ac97);
Takashi Iwai2c484df2005-06-30 18:54:04 +020035}
36
Takashi Iwaid18f8372005-11-17 15:10:38 +010037static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
Takashi Iwai2c484df2005-06-30 18:54:04 +020038 .read = pxa2xx_ac97_read,
39 .write = pxa2xx_ac97_write,
40 .reset = pxa2xx_ac97_reset,
41};
42
Takashi Iwaid18f8372005-11-17 15:10:38 +010043static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_out = {
Takashi Iwai2c484df2005-06-30 18:54:04 +020044 .name = "AC97 PCM out",
45 .dev_addr = __PREG(PCDR),
Eric Miao87f3dd72008-09-08 15:26:43 +080046 .drcmr = &DRCMR(12),
Takashi Iwai2c484df2005-06-30 18:54:04 +020047 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
48 DCMD_BURST32 | DCMD_WIDTH4,
49};
50
Takashi Iwaid18f8372005-11-17 15:10:38 +010051static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_in = {
Takashi Iwai2c484df2005-06-30 18:54:04 +020052 .name = "AC97 PCM in",
53 .dev_addr = __PREG(PCDR),
Eric Miao87f3dd72008-09-08 15:26:43 +080054 .drcmr = &DRCMR(11),
Takashi Iwai2c484df2005-06-30 18:54:04 +020055 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
56 DCMD_BURST32 | DCMD_WIDTH4,
57};
58
Takashi Iwaid18f8372005-11-17 15:10:38 +010059static struct snd_pcm *pxa2xx_ac97_pcm;
60static struct snd_ac97 *pxa2xx_ac97_ac97;
Takashi Iwai2c484df2005-06-30 18:54:04 +020061
Takashi Iwaid18f8372005-11-17 15:10:38 +010062static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream)
Takashi Iwai2c484df2005-06-30 18:54:04 +020063{
Takashi Iwaid18f8372005-11-17 15:10:38 +010064 struct snd_pcm_runtime *runtime = substream->runtime;
Takashi Iwai2c484df2005-06-30 18:54:04 +020065 pxa2xx_audio_ops_t *platform_ops;
66 int r;
67
68 runtime->hw.channels_min = 2;
69 runtime->hw.channels_max = 2;
70
71 r = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
72 AC97_RATES_FRONT_DAC : AC97_RATES_ADC;
73 runtime->hw.rates = pxa2xx_ac97_ac97->rates[r];
74 snd_pcm_limit_hw_rates(runtime);
75
76 platform_ops = substream->pcm->card->dev->platform_data;
77 if (platform_ops && platform_ops->startup)
78 return platform_ops->startup(substream, platform_ops->priv);
79 else
80 return 0;
81}
82
Takashi Iwaid18f8372005-11-17 15:10:38 +010083static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream)
Takashi Iwai2c484df2005-06-30 18:54:04 +020084{
85 pxa2xx_audio_ops_t *platform_ops;
86
87 platform_ops = substream->pcm->card->dev->platform_data;
88 if (platform_ops && platform_ops->shutdown)
89 platform_ops->shutdown(substream, platform_ops->priv);
90}
91
Takashi Iwaid18f8372005-11-17 15:10:38 +010092static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream)
Takashi Iwai2c484df2005-06-30 18:54:04 +020093{
Takashi Iwaid18f8372005-11-17 15:10:38 +010094 struct snd_pcm_runtime *runtime = substream->runtime;
Takashi Iwai2c484df2005-06-30 18:54:04 +020095 int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
96 AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
97 return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate);
98}
99
Takashi Iwaid18f8372005-11-17 15:10:38 +0100100static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = {
Takashi Iwai2c484df2005-06-30 18:54:04 +0200101 .playback_params = &pxa2xx_ac97_pcm_out,
102 .capture_params = &pxa2xx_ac97_pcm_in,
103 .startup = pxa2xx_ac97_pcm_startup,
104 .shutdown = pxa2xx_ac97_pcm_shutdown,
105 .prepare = pxa2xx_ac97_pcm_prepare,
106};
107
108#ifdef CONFIG_PM
109
Takashi Iwaid18f8372005-11-17 15:10:38 +0100110static int pxa2xx_ac97_do_suspend(struct snd_card *card, pm_message_t state)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200111{
Takashi Iwai792a6c52005-11-17 17:19:25 +0100112 pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
113
114 snd_power_change_state(card, SNDRV_CTL_POWER_D3cold);
115 snd_pcm_suspend_all(pxa2xx_ac97_pcm);
116 snd_ac97_suspend(pxa2xx_ac97_ac97);
117 if (platform_ops && platform_ops->suspend)
118 platform_ops->suspend(platform_ops->priv);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200119
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400120 return pxa2xx_ac97_hw_suspend();
Takashi Iwai2c484df2005-06-30 18:54:04 +0200121}
122
Takashi Iwaid18f8372005-11-17 15:10:38 +0100123static int pxa2xx_ac97_do_resume(struct snd_card *card)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200124{
Takashi Iwai792a6c52005-11-17 17:19:25 +0100125 pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400126 int rc;
Takashi Iwai792a6c52005-11-17 17:19:25 +0100127
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400128 rc = pxa2xx_ac97_hw_resume();
129 if (rc)
130 return rc;
131
Takashi Iwai792a6c52005-11-17 17:19:25 +0100132 if (platform_ops && platform_ops->resume)
133 platform_ops->resume(platform_ops->priv);
134 snd_ac97_resume(pxa2xx_ac97_ac97);
135 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200136
137 return 0;
138}
139
Russell King3ae5eae2005-11-09 22:32:44 +0000140static int pxa2xx_ac97_suspend(struct platform_device *dev, pm_message_t state)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200141{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100142 struct snd_card *card = platform_get_drvdata(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200143 int ret = 0;
144
Russell King9480e302005-10-28 09:52:56 -0700145 if (card)
Dirk Opfera55bfdc2005-08-08 16:29:43 +0200146 ret = pxa2xx_ac97_do_suspend(card, PMSG_SUSPEND);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200147
148 return ret;
149}
150
Russell King3ae5eae2005-11-09 22:32:44 +0000151static int pxa2xx_ac97_resume(struct platform_device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200152{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100153 struct snd_card *card = platform_get_drvdata(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200154 int ret = 0;
155
Russell King9480e302005-10-28 09:52:56 -0700156 if (card)
Dirk Opfera55bfdc2005-08-08 16:29:43 +0200157 ret = pxa2xx_ac97_do_resume(card);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200158
159 return ret;
160}
161
162#else
163#define pxa2xx_ac97_suspend NULL
164#define pxa2xx_ac97_resume NULL
165#endif
166
Prarit Bhargava788c6042007-02-13 13:11:11 +0100167static int __devinit pxa2xx_ac97_probe(struct platform_device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200168{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100169 struct snd_card *card;
170 struct snd_ac97_bus *ac97_bus;
171 struct snd_ac97_template ac97_template;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200172 int ret;
Marek Vasut4ac04782009-07-30 02:55:01 +0200173 pxa2xx_audio_ops_t *pdata = dev->dev.platform_data;
174
175 if (dev->id >= 0) {
176 dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n");
177 ret = -ENXIO;
178 goto err_dev;
179 }
Takashi Iwai2c484df2005-06-30 18:54:04 +0200180
Takashi Iwaibd7dd772008-12-28 16:45:02 +0100181 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
182 THIS_MODULE, 0, &card);
183 if (ret < 0)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200184 goto err;
185
Russell King3ae5eae2005-11-09 22:32:44 +0000186 card->dev = &dev->dev;
187 strncpy(card->driver, dev->dev.driver->name, sizeof(card->driver));
Takashi Iwai2c484df2005-06-30 18:54:04 +0200188
189 ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm);
190 if (ret)
191 goto err;
192
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400193 ret = pxa2xx_ac97_hw_probe(dev);
194 if (ret)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200195 goto err;
196
Takashi Iwai2c484df2005-06-30 18:54:04 +0200197 ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus);
198 if (ret)
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400199 goto err_remove;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200200 memset(&ac97_template, 0, sizeof(ac97_template));
201 ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97);
202 if (ret)
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400203 goto err_remove;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200204
205 snprintf(card->shortname, sizeof(card->shortname),
206 "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97));
207 snprintf(card->longname, sizeof(card->longname),
Russell King3ae5eae2005-11-09 22:32:44 +0000208 "%s (%s)", dev->dev.driver->name, card->mixername);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200209
Marek Vasute2365bf2009-08-21 20:02:52 +0200210 if (pdata && pdata->codec_data[0])
211 snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]);
Takashi Iwaif78dfac2007-12-17 16:24:04 +0100212 snd_card_set_dev(card, &dev->dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200213 ret = snd_card_register(card);
214 if (ret == 0) {
Russell King3ae5eae2005-11-09 22:32:44 +0000215 platform_set_drvdata(dev, card);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200216 return 0;
217 }
218
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400219err_remove:
220 pxa2xx_ac97_hw_remove(dev);
221err:
Takashi Iwai2c484df2005-06-30 18:54:04 +0200222 if (card)
223 snd_card_free(card);
Marek Vasut4ac04782009-07-30 02:55:01 +0200224err_dev:
Takashi Iwai2c484df2005-06-30 18:54:04 +0200225 return ret;
226}
227
Prarit Bhargava788c6042007-02-13 13:11:11 +0100228static int __devexit pxa2xx_ac97_remove(struct platform_device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200229{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100230 struct snd_card *card = platform_get_drvdata(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200231
232 if (card) {
233 snd_card_free(card);
Russell King3ae5eae2005-11-09 22:32:44 +0000234 platform_set_drvdata(dev, NULL);
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400235 pxa2xx_ac97_hw_remove(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200236 }
237
238 return 0;
239}
240
Russell King3ae5eae2005-11-09 22:32:44 +0000241static struct platform_driver pxa2xx_ac97_driver = {
Takashi Iwai2c484df2005-06-30 18:54:04 +0200242 .probe = pxa2xx_ac97_probe,
Prarit Bhargava788c6042007-02-13 13:11:11 +0100243 .remove = __devexit_p(pxa2xx_ac97_remove),
Takashi Iwai2c484df2005-06-30 18:54:04 +0200244 .suspend = pxa2xx_ac97_suspend,
245 .resume = pxa2xx_ac97_resume,
Russell King3ae5eae2005-11-09 22:32:44 +0000246 .driver = {
247 .name = "pxa2xx-ac97",
Kay Sievers8b45a202008-04-14 13:33:36 +0200248 .owner = THIS_MODULE,
Russell King3ae5eae2005-11-09 22:32:44 +0000249 },
Takashi Iwai2c484df2005-06-30 18:54:04 +0200250};
251
252static int __init pxa2xx_ac97_init(void)
253{
Russell King3ae5eae2005-11-09 22:32:44 +0000254 return platform_driver_register(&pxa2xx_ac97_driver);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200255}
256
257static void __exit pxa2xx_ac97_exit(void)
258{
Russell King3ae5eae2005-11-09 22:32:44 +0000259 platform_driver_unregister(&pxa2xx_ac97_driver);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200260}
261
262module_init(pxa2xx_ac97_init);
263module_exit(pxa2xx_ac97_exit);
264
265MODULE_AUTHOR("Nicolas Pitre");
266MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
267MODULE_LICENSE("GPL");
Kay Sievers8b45a202008-04-14 13:33:36 +0200268MODULE_ALIAS("platform:pxa2xx-ac97");