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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>
Daniel Mackd65a1452013-08-12 10:42:39 +020017#include <linux/dmaengine.h>
Takashi Iwai2c484df2005-06-30 18:54:04 +020018
Takashi Iwai2c484df2005-06-30 18:54:04 +020019#include <sound/core.h>
20#include <sound/pcm.h>
21#include <sound/ac97_codec.h>
22#include <sound/initval.h>
Dmitry Baryshkov9c636342008-09-10 05:01:17 +040023#include <sound/pxa2xx-lib.h>
Daniel Mackd65a1452013-08-12 10:42:39 +020024#include <sound/dmaengine_pcm.h>
Takashi Iwai2c484df2005-06-30 18:54:04 +020025
Eric Miao1f017a92008-11-28 14:19:33 +080026#include <mach/regs-ac97.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010027#include <mach/audio.h>
Takashi Iwai2c484df2005-06-30 18:54:04 +020028
29#include "pxa2xx-pcm.h"
30
Takashi Iwaid18f8372005-11-17 15:10:38 +010031static void pxa2xx_ac97_reset(struct snd_ac97 *ac97)
Takashi Iwai2c484df2005-06-30 18:54:04 +020032{
Dmitry Baryshkov9c636342008-09-10 05:01:17 +040033 if (!pxa2xx_ac97_try_cold_reset(ac97)) {
34 pxa2xx_ac97_try_warm_reset(ac97);
Takashi Iwai2c484df2005-06-30 18:54:04 +020035 }
36
Dmitry Baryshkov9c636342008-09-10 05:01:17 +040037 pxa2xx_ac97_finish_reset(ac97);
Takashi Iwai2c484df2005-06-30 18:54:04 +020038}
39
Takashi Iwaid18f8372005-11-17 15:10:38 +010040static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
Takashi Iwai2c484df2005-06-30 18:54:04 +020041 .read = pxa2xx_ac97_read,
42 .write = pxa2xx_ac97_write,
43 .reset = pxa2xx_ac97_reset,
44};
45
Daniel Mackd65a1452013-08-12 10:42:39 +020046static unsigned long pxa2xx_ac97_pcm_out_req = 12;
47static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_out = {
48 .addr = __PREG(PCDR),
49 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
50 .maxburst = 32,
51 .filter_data = &pxa2xx_ac97_pcm_out_req,
Takashi Iwai2c484df2005-06-30 18:54:04 +020052};
53
Daniel Mackd65a1452013-08-12 10:42:39 +020054static unsigned long pxa2xx_ac97_pcm_in_req = 11;
55static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_in = {
56 .addr = __PREG(PCDR),
57 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
58 .maxburst = 32,
59 .filter_data = &pxa2xx_ac97_pcm_in_req,
Takashi Iwai2c484df2005-06-30 18:54:04 +020060};
61
Takashi Iwaid18f8372005-11-17 15:10:38 +010062static struct snd_pcm *pxa2xx_ac97_pcm;
63static struct snd_ac97 *pxa2xx_ac97_ac97;
Takashi Iwai2c484df2005-06-30 18:54:04 +020064
Takashi Iwaid18f8372005-11-17 15:10:38 +010065static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream)
Takashi Iwai2c484df2005-06-30 18:54:04 +020066{
Takashi Iwaid18f8372005-11-17 15:10:38 +010067 struct snd_pcm_runtime *runtime = substream->runtime;
Takashi Iwai2c484df2005-06-30 18:54:04 +020068 pxa2xx_audio_ops_t *platform_ops;
69 int r;
70
71 runtime->hw.channels_min = 2;
72 runtime->hw.channels_max = 2;
73
74 r = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
75 AC97_RATES_FRONT_DAC : AC97_RATES_ADC;
76 runtime->hw.rates = pxa2xx_ac97_ac97->rates[r];
77 snd_pcm_limit_hw_rates(runtime);
78
79 platform_ops = substream->pcm->card->dev->platform_data;
80 if (platform_ops && platform_ops->startup)
81 return platform_ops->startup(substream, platform_ops->priv);
82 else
83 return 0;
84}
85
Takashi Iwaid18f8372005-11-17 15:10:38 +010086static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream)
Takashi Iwai2c484df2005-06-30 18:54:04 +020087{
88 pxa2xx_audio_ops_t *platform_ops;
89
90 platform_ops = substream->pcm->card->dev->platform_data;
91 if (platform_ops && platform_ops->shutdown)
92 platform_ops->shutdown(substream, platform_ops->priv);
93}
94
Takashi Iwaid18f8372005-11-17 15:10:38 +010095static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream)
Takashi Iwai2c484df2005-06-30 18:54:04 +020096{
Takashi Iwaid18f8372005-11-17 15:10:38 +010097 struct snd_pcm_runtime *runtime = substream->runtime;
Takashi Iwai2c484df2005-06-30 18:54:04 +020098 int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
99 AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
100 return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate);
101}
102
Takashi Iwaid18f8372005-11-17 15:10:38 +0100103static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = {
Takashi Iwai2c484df2005-06-30 18:54:04 +0200104 .playback_params = &pxa2xx_ac97_pcm_out,
105 .capture_params = &pxa2xx_ac97_pcm_in,
106 .startup = pxa2xx_ac97_pcm_startup,
107 .shutdown = pxa2xx_ac97_pcm_shutdown,
108 .prepare = pxa2xx_ac97_pcm_prepare,
109};
110
Takashi Iwaid34e4e02012-08-09 15:47:15 +0200111#ifdef CONFIG_PM_SLEEP
Takashi Iwai2c484df2005-06-30 18:54:04 +0200112
Takashi Iwai284e7ca2012-07-02 11:22:40 +0200113static int pxa2xx_ac97_do_suspend(struct snd_card *card)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200114{
Takashi Iwai792a6c52005-11-17 17:19:25 +0100115 pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
116
117 snd_power_change_state(card, SNDRV_CTL_POWER_D3cold);
118 snd_pcm_suspend_all(pxa2xx_ac97_pcm);
119 snd_ac97_suspend(pxa2xx_ac97_ac97);
120 if (platform_ops && platform_ops->suspend)
121 platform_ops->suspend(platform_ops->priv);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200122
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400123 return pxa2xx_ac97_hw_suspend();
Takashi Iwai2c484df2005-06-30 18:54:04 +0200124}
125
Takashi Iwaid18f8372005-11-17 15:10:38 +0100126static int pxa2xx_ac97_do_resume(struct snd_card *card)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200127{
Takashi Iwai792a6c52005-11-17 17:19:25 +0100128 pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400129 int rc;
Takashi Iwai792a6c52005-11-17 17:19:25 +0100130
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400131 rc = pxa2xx_ac97_hw_resume();
132 if (rc)
133 return rc;
134
Takashi Iwai792a6c52005-11-17 17:19:25 +0100135 if (platform_ops && platform_ops->resume)
136 platform_ops->resume(platform_ops->priv);
137 snd_ac97_resume(pxa2xx_ac97_ac97);
138 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200139
140 return 0;
141}
142
Mike Rapoport2ba9fd02009-07-29 11:59:23 +0300143static int pxa2xx_ac97_suspend(struct device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200144{
Mike Rapoport2ba9fd02009-07-29 11:59:23 +0300145 struct snd_card *card = dev_get_drvdata(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200146 int ret = 0;
147
Russell King9480e302005-10-28 09:52:56 -0700148 if (card)
Takashi Iwai284e7ca2012-07-02 11:22:40 +0200149 ret = pxa2xx_ac97_do_suspend(card);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200150
151 return ret;
152}
153
Mike Rapoport2ba9fd02009-07-29 11:59:23 +0300154static int pxa2xx_ac97_resume(struct device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200155{
Mike Rapoport2ba9fd02009-07-29 11:59:23 +0300156 struct snd_card *card = dev_get_drvdata(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200157 int ret = 0;
158
Russell King9480e302005-10-28 09:52:56 -0700159 if (card)
Dirk Opfera55bfdc2005-08-08 16:29:43 +0200160 ret = pxa2xx_ac97_do_resume(card);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200161
162 return ret;
163}
164
Takashi Iwai284e7ca2012-07-02 11:22:40 +0200165static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_suspend, pxa2xx_ac97_resume);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200166#endif
167
Bill Pembertone21596b2012-12-06 12:35:12 -0500168static int 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;
Marek Vasut4ac04782009-07-30 02:55:01 +0200174 pxa2xx_audio_ops_t *pdata = dev->dev.platform_data;
175
176 if (dev->id >= 0) {
177 dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n");
178 ret = -ENXIO;
179 goto err_dev;
180 }
Takashi Iwai2c484df2005-06-30 18:54:04 +0200181
Takashi Iwaibd7dd772008-12-28 16:45:02 +0100182 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
183 THIS_MODULE, 0, &card);
184 if (ret < 0)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200185 goto err;
186
Russell King3ae5eae2005-11-09 22:32:44 +0000187 card->dev = &dev->dev;
188 strncpy(card->driver, dev->dev.driver->name, sizeof(card->driver));
Takashi Iwai2c484df2005-06-30 18:54:04 +0200189
190 ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm);
191 if (ret)
192 goto err;
193
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400194 ret = pxa2xx_ac97_hw_probe(dev);
195 if (ret)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200196 goto err;
197
Takashi Iwai2c484df2005-06-30 18:54:04 +0200198 ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus);
199 if (ret)
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400200 goto err_remove;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200201 memset(&ac97_template, 0, sizeof(ac97_template));
202 ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97);
203 if (ret)
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400204 goto err_remove;
Takashi Iwai2c484df2005-06-30 18:54:04 +0200205
206 snprintf(card->shortname, sizeof(card->shortname),
207 "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97));
208 snprintf(card->longname, sizeof(card->longname),
Russell King3ae5eae2005-11-09 22:32:44 +0000209 "%s (%s)", dev->dev.driver->name, card->mixername);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200210
Robert Schwebel367da152009-09-04 21:16:36 +0200211 if (pdata && pdata->codec_pdata[0])
Marek Vasute2365bf2009-08-21 20:02:52 +0200212 snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]);
Takashi Iwaif78dfac2007-12-17 16:24:04 +0100213 snd_card_set_dev(card, &dev->dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200214 ret = snd_card_register(card);
215 if (ret == 0) {
Russell King3ae5eae2005-11-09 22:32:44 +0000216 platform_set_drvdata(dev, card);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200217 return 0;
218 }
219
Dmitry Baryshkov9c636342008-09-10 05:01:17 +0400220err_remove:
221 pxa2xx_ac97_hw_remove(dev);
222err:
Takashi Iwai2c484df2005-06-30 18:54:04 +0200223 if (card)
224 snd_card_free(card);
Marek Vasut4ac04782009-07-30 02:55:01 +0200225err_dev:
Takashi Iwai2c484df2005-06-30 18:54:04 +0200226 return ret;
227}
228
Bill Pembertone21596b2012-12-06 12:35:12 -0500229static int pxa2xx_ac97_remove(struct platform_device *dev)
Takashi Iwai2c484df2005-06-30 18:54:04 +0200230{
Takashi Iwaid18f8372005-11-17 15:10:38 +0100231 struct snd_card *card = platform_get_drvdata(dev);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200232
233 if (card) {
234 snd_card_free(card);
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,
Bill Pembertone21596b2012-12-06 12:35:12 -0500243 .remove = pxa2xx_ac97_remove,
Russell King3ae5eae2005-11-09 22:32:44 +0000244 .driver = {
245 .name = "pxa2xx-ac97",
Kay Sievers8b45a202008-04-14 13:33:36 +0200246 .owner = THIS_MODULE,
Takashi Iwaid34e4e02012-08-09 15:47:15 +0200247#ifdef CONFIG_PM_SLEEP
Mike Rapoport2ba9fd02009-07-29 11:59:23 +0300248 .pm = &pxa2xx_ac97_pm_ops,
249#endif
Russell King3ae5eae2005-11-09 22:32:44 +0000250 },
Takashi Iwai2c484df2005-06-30 18:54:04 +0200251};
252
Axel Lina09452e2011-11-27 16:36:04 +0800253module_platform_driver(pxa2xx_ac97_driver);
Takashi Iwai2c484df2005-06-30 18:54:04 +0200254
255MODULE_AUTHOR("Nicolas Pitre");
256MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
257MODULE_LICENSE("GPL");
Kay Sievers8b45a202008-04-14 13:33:36 +0200258MODULE_ALIAS("platform:pxa2xx-ac97");