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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>
Rob Herring23019a72012-03-20 14:33:19 -050014#include <linux/io.h>
Takashi Iwai2c484df2005-06-30 18:54:04 +020015#include <linux/module.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010016#include <linux/platform_device.h>
Takashi Iwai2c484df2005-06-30 18:54:04 +020017
Takashi Iwai2c484df2005-06-30 18:54:04 +020018#include <sound/core.h>
19#include <sound/pcm.h>
20#include <sound/ac97_codec.h>
21#include <sound/initval.h>
Dmitry Baryshkov9c636342008-09-10 05:01:17 +040022#include <sound/pxa2xx-lib.h>
Takashi Iwai2c484df2005-06-30 18:54:04 +020023
Eric Miao1f017a92008-11-28 14:19:33 +080024#include <mach/regs-ac97.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),
Eric Miao87f3dd72008-09-08 15:26:43 +080047 .drcmr = &DRCMR(12),
Takashi Iwai2c484df2005-06-30 18:54:04 +020048 .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),
Eric Miao87f3dd72008-09-08 15:26:43 +080055 .drcmr = &DRCMR(11),
Takashi Iwai2c484df2005-06-30 18:54:04 +020056 .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
Takashi Iwaid34e4e02012-08-09 15:47:15 +0200109#ifdef CONFIG_PM_SLEEP
Takashi Iwai2c484df2005-06-30 18:54:04 +0200110
Takashi Iwai284e7ca2012-07-02 11:22:40 +0200111static int pxa2xx_ac97_do_suspend(struct snd_card *card)
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
Mike Rapoport2ba9fd02009-07-29 11:59:23 +0300141static int pxa2xx_ac97_suspend(struct device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200142{
Mike Rapoport2ba9fd02009-07-29 11:59:23 +0300143 struct snd_card *card = dev_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)
Takashi Iwai284e7ca2012-07-02 11:22:40 +0200147 ret = pxa2xx_ac97_do_suspend(card);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200148
149 return ret;
150}
151
Mike Rapoport2ba9fd02009-07-29 11:59:23 +0300152static int pxa2xx_ac97_resume(struct device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200153{
Mike Rapoport2ba9fd02009-07-29 11:59:23 +0300154 struct snd_card *card = dev_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
Takashi Iwai284e7ca2012-07-02 11:22:40 +0200163static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_suspend, pxa2xx_ac97_resume);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200164#endif
165
Bill Pembertone21596b2012-12-06 12:35:12 -0500166static int pxa2xx_ac97_probe(struct platform_device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200167{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100168 struct snd_card *card;
169 struct snd_ac97_bus *ac97_bus;
170 struct snd_ac97_template ac97_template;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200171 int ret;
Marek Vasut4ac04782009-07-30 02:55:01 +0200172 pxa2xx_audio_ops_t *pdata = dev->dev.platform_data;
173
174 if (dev->id >= 0) {
175 dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n");
176 ret = -ENXIO;
177 goto err_dev;
178 }
Takashi Iwai2c484df2005-06-30 18:54:04 +0200179
Takashi Iwaibd7dd772008-12-28 16:45:02 +0100180 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
181 THIS_MODULE, 0, &card);
182 if (ret < 0)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200183 goto err;
184
Russell King3ae5eae2005-11-09 22:32:44 +0000185 card->dev = &dev->dev;
186 strncpy(card->driver, dev->dev.driver->name, sizeof(card->driver));
Takashi Iwai2c484df2005-06-30 18:54:04 +0200187
188 ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm);
189 if (ret)
190 goto err;
191
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400192 ret = pxa2xx_ac97_hw_probe(dev);
193 if (ret)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200194 goto err;
195
Takashi Iwai2c484df2005-06-30 18:54:04 +0200196 ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus);
197 if (ret)
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400198 goto err_remove;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200199 memset(&ac97_template, 0, sizeof(ac97_template));
200 ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97);
201 if (ret)
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400202 goto err_remove;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200203
204 snprintf(card->shortname, sizeof(card->shortname),
205 "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97));
206 snprintf(card->longname, sizeof(card->longname),
Russell King3ae5eae2005-11-09 22:32:44 +0000207 "%s (%s)", dev->dev.driver->name, card->mixername);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200208
Robert Schwebel367da152009-09-04 21:16:36 +0200209 if (pdata && pdata->codec_pdata[0])
Marek Vasute2365bf2009-08-21 20:02:52 +0200210 snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]);
Takashi Iwaif78dfac2007-12-17 16:24:04 +0100211 snd_card_set_dev(card, &dev->dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200212 ret = snd_card_register(card);
213 if (ret == 0) {
Russell King3ae5eae2005-11-09 22:32:44 +0000214 platform_set_drvdata(dev, card);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200215 return 0;
216 }
217
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400218err_remove:
219 pxa2xx_ac97_hw_remove(dev);
220err:
Takashi Iwai2c484df2005-06-30 18:54:04 +0200221 if (card)
222 snd_card_free(card);
Marek Vasut4ac04782009-07-30 02:55:01 +0200223err_dev:
Takashi Iwai2c484df2005-06-30 18:54:04 +0200224 return ret;
225}
226
Bill Pembertone21596b2012-12-06 12:35:12 -0500227static int pxa2xx_ac97_remove(struct platform_device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200228{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100229 struct snd_card *card = platform_get_drvdata(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200230
231 if (card) {
232 snd_card_free(card);
Russell King3ae5eae2005-11-09 22:32:44 +0000233 platform_set_drvdata(dev, NULL);
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400234 pxa2xx_ac97_hw_remove(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200235 }
236
237 return 0;
238}
239
Russell King3ae5eae2005-11-09 22:32:44 +0000240static struct platform_driver pxa2xx_ac97_driver = {
Takashi Iwai2c484df2005-06-30 18:54:04 +0200241 .probe = pxa2xx_ac97_probe,
Bill Pembertone21596b2012-12-06 12:35:12 -0500242 .remove = pxa2xx_ac97_remove,
Russell King3ae5eae2005-11-09 22:32:44 +0000243 .driver = {
244 .name = "pxa2xx-ac97",
Kay Sievers8b45a202008-04-14 13:33:36 +0200245 .owner = THIS_MODULE,
Takashi Iwaid34e4e02012-08-09 15:47:15 +0200246#ifdef CONFIG_PM_SLEEP
Mike Rapoport2ba9fd02009-07-29 11:59:23 +0300247 .pm = &pxa2xx_ac97_pm_ops,
248#endif
Russell King3ae5eae2005-11-09 22:32:44 +0000249 },
Takashi Iwai2c484df2005-06-30 18:54:04 +0200250};
251
Axel Lina09452e2011-11-27 16:36:04 +0800252module_platform_driver(pxa2xx_ac97_driver);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200253
254MODULE_AUTHOR("Nicolas Pitre");
255MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
256MODULE_LICENSE("GPL");
Kay Sievers8b45a202008-04-14 13:33:36 +0200257MODULE_ALIAS("platform:pxa2xx-ac97");