Commit | Line | Data |
---|---|---|
2c484df0 TI |
1 | /* |
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> | |
23019a73 | 14 | #include <linux/io.h> |
2c484df0 | 15 | #include <linux/module.h> |
d052d1be | 16 | #include <linux/platform_device.h> |
d65a1458 | 17 | #include <linux/dmaengine.h> |
2c484df0 | 18 | |
2c484df0 TI |
19 | #include <sound/core.h> |
20 | #include <sound/pcm.h> | |
21 | #include <sound/ac97_codec.h> | |
22 | #include <sound/initval.h> | |
9c636342 | 23 | #include <sound/pxa2xx-lib.h> |
d65a1458 | 24 | #include <sound/dmaengine_pcm.h> |
2c484df0 | 25 | |
1f017a99 | 26 | #include <mach/regs-ac97.h> |
a09e64fb | 27 | #include <mach/audio.h> |
2c484df0 TI |
28 | |
29 | #include "pxa2xx-pcm.h" | |
30 | ||
d18f8376 | 31 | static void pxa2xx_ac97_reset(struct snd_ac97 *ac97) |
2c484df0 | 32 | { |
9c636342 DB |
33 | if (!pxa2xx_ac97_try_cold_reset(ac97)) { |
34 | pxa2xx_ac97_try_warm_reset(ac97); | |
2c484df0 TI |
35 | } |
36 | ||
9c636342 | 37 | pxa2xx_ac97_finish_reset(ac97); |
2c484df0 TI |
38 | } |
39 | ||
d18f8376 | 40 | static struct snd_ac97_bus_ops pxa2xx_ac97_ops = { |
2c484df0 TI |
41 | .read = pxa2xx_ac97_read, |
42 | .write = pxa2xx_ac97_write, | |
43 | .reset = pxa2xx_ac97_reset, | |
44 | }; | |
45 | ||
d65a1458 DM |
46 | static unsigned long pxa2xx_ac97_pcm_out_req = 12; |
47 | static 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, | |
2c484df0 TI |
52 | }; |
53 | ||
d65a1458 DM |
54 | static unsigned long pxa2xx_ac97_pcm_in_req = 11; |
55 | static 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, | |
2c484df0 TI |
60 | }; |
61 | ||
d18f8376 TI |
62 | static struct snd_pcm *pxa2xx_ac97_pcm; |
63 | static struct snd_ac97 *pxa2xx_ac97_ac97; | |
2c484df0 | 64 | |
d18f8376 | 65 | static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream) |
2c484df0 | 66 | { |
d18f8376 | 67 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
68 | 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 | ||
d18f8376 | 86 | static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream) |
2c484df0 TI |
87 | { |
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 | ||
d18f8376 | 95 | static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream) |
2c484df0 | 96 | { |
d18f8376 | 97 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
98 | 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 | ||
d18f8376 | 103 | static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = { |
2c484df0 TI |
104 | .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 | ||
d34e4e00 | 111 | #ifdef CONFIG_PM_SLEEP |
2c484df0 | 112 | |
284e7ca7 | 113 | static int pxa2xx_ac97_do_suspend(struct snd_card *card) |
2c484df0 | 114 | { |
792a6c51 TI |
115 | 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); | |
2c484df0 | 122 | |
9c636342 | 123 | return pxa2xx_ac97_hw_suspend(); |
2c484df0 TI |
124 | } |
125 | ||
d18f8376 | 126 | static int pxa2xx_ac97_do_resume(struct snd_card *card) |
2c484df0 | 127 | { |
792a6c51 | 128 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
9c636342 DB |
129 | int rc; |
130 | ||
131 | rc = pxa2xx_ac97_hw_resume(); | |
132 | if (rc) | |
133 | return rc; | |
792a6c51 | 134 | |
792a6c51 TI |
135 | 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); | |
2c484df0 TI |
139 | |
140 | return 0; | |
141 | } | |
142 | ||
2ba9fd0d | 143 | static int pxa2xx_ac97_suspend(struct device *dev) |
2c484df0 | 144 | { |
2ba9fd0d | 145 | struct snd_card *card = dev_get_drvdata(dev); |
2c484df0 TI |
146 | int ret = 0; |
147 | ||
9480e307 | 148 | if (card) |
284e7ca7 | 149 | ret = pxa2xx_ac97_do_suspend(card); |
2c484df0 TI |
150 | |
151 | return ret; | |
152 | } | |
153 | ||
2ba9fd0d | 154 | static int pxa2xx_ac97_resume(struct device *dev) |
2c484df0 | 155 | { |
2ba9fd0d | 156 | struct snd_card *card = dev_get_drvdata(dev); |
2c484df0 TI |
157 | int ret = 0; |
158 | ||
9480e307 | 159 | if (card) |
a55bfdc5 | 160 | ret = pxa2xx_ac97_do_resume(card); |
2c484df0 TI |
161 | |
162 | return ret; | |
163 | } | |
164 | ||
284e7ca7 | 165 | static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_suspend, pxa2xx_ac97_resume); |
2c484df0 TI |
166 | #endif |
167 | ||
e21596bb | 168 | static int pxa2xx_ac97_probe(struct platform_device *dev) |
2c484df0 | 169 | { |
d18f8376 TI |
170 | struct snd_card *card; |
171 | struct snd_ac97_bus *ac97_bus; | |
172 | struct snd_ac97_template ac97_template; | |
2c484df0 | 173 | int ret; |
4ac0478f MV |
174 | 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 | } | |
2c484df0 | 181 | |
bd7dd77c TI |
182 | ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
183 | THIS_MODULE, 0, &card); | |
184 | if (ret < 0) | |
2c484df0 TI |
185 | goto err; |
186 | ||
3ae5eaec RK |
187 | card->dev = &dev->dev; |
188 | strncpy(card->driver, dev->dev.driver->name, sizeof(card->driver)); | |
2c484df0 TI |
189 | |
190 | ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm); | |
191 | if (ret) | |
192 | goto err; | |
193 | ||
9c636342 DB |
194 | ret = pxa2xx_ac97_hw_probe(dev); |
195 | if (ret) | |
93873fbf | 196 | goto err; |
2c484df0 TI |
197 | |
198 | ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus); | |
199 | if (ret) | |
9c636342 | 200 | goto err_remove; |
2c484df0 TI |
201 | memset(&ac97_template, 0, sizeof(ac97_template)); |
202 | ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97); | |
203 | if (ret) | |
9c636342 | 204 | goto err_remove; |
2c484df0 TI |
205 | |
206 | snprintf(card->shortname, sizeof(card->shortname), | |
207 | "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97)); | |
208 | snprintf(card->longname, sizeof(card->longname), | |
3ae5eaec | 209 | "%s (%s)", dev->dev.driver->name, card->mixername); |
2c484df0 | 210 | |
367da152 | 211 | if (pdata && pdata->codec_pdata[0]) |
e2365bf3 | 212 | snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]); |
f78dfac9 | 213 | snd_card_set_dev(card, &dev->dev); |
2c484df0 TI |
214 | ret = snd_card_register(card); |
215 | if (ret == 0) { | |
3ae5eaec | 216 | platform_set_drvdata(dev, card); |
2c484df0 TI |
217 | return 0; |
218 | } | |
219 | ||
9c636342 DB |
220 | err_remove: |
221 | pxa2xx_ac97_hw_remove(dev); | |
222 | err: | |
2c484df0 TI |
223 | if (card) |
224 | snd_card_free(card); | |
4ac0478f | 225 | err_dev: |
2c484df0 TI |
226 | return ret; |
227 | } | |
228 | ||
e21596bb | 229 | static int pxa2xx_ac97_remove(struct platform_device *dev) |
2c484df0 | 230 | { |
d18f8376 | 231 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
232 | |
233 | if (card) { | |
234 | snd_card_free(card); | |
9c636342 | 235 | pxa2xx_ac97_hw_remove(dev); |
2c484df0 TI |
236 | } |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
3ae5eaec | 241 | static struct platform_driver pxa2xx_ac97_driver = { |
2c484df0 | 242 | .probe = pxa2xx_ac97_probe, |
e21596bb | 243 | .remove = pxa2xx_ac97_remove, |
3ae5eaec RK |
244 | .driver = { |
245 | .name = "pxa2xx-ac97", | |
8b45a209 | 246 | .owner = THIS_MODULE, |
d34e4e00 | 247 | #ifdef CONFIG_PM_SLEEP |
2ba9fd0d MR |
248 | .pm = &pxa2xx_ac97_pm_ops, |
249 | #endif | |
3ae5eaec | 250 | }, |
2c484df0 TI |
251 | }; |
252 | ||
a09452ee | 253 | module_platform_driver(pxa2xx_ac97_driver); |
2c484df0 TI |
254 | |
255 | MODULE_AUTHOR("Nicolas Pitre"); | |
256 | MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); | |
257 | MODULE_LICENSE("GPL"); | |
8b45a209 | 258 | MODULE_ALIAS("platform:pxa2xx-ac97"); |