Commit | Line | Data |
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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> | |
14 | #include <linux/module.h> | |
d052d1be | 15 | #include <linux/platform_device.h> |
2c484df0 | 16 | |
2c484df0 TI |
17 | #include <sound/core.h> |
18 | #include <sound/pcm.h> | |
19 | #include <sound/ac97_codec.h> | |
20 | #include <sound/initval.h> | |
9c636342 | 21 | #include <sound/pxa2xx-lib.h> |
2c484df0 | 22 | |
1f017a99 | 23 | #include <mach/regs-ac97.h> |
a09e64fb | 24 | #include <mach/audio.h> |
2c484df0 TI |
25 | |
26 | #include "pxa2xx-pcm.h" | |
27 | ||
d18f8376 | 28 | static void pxa2xx_ac97_reset(struct snd_ac97 *ac97) |
2c484df0 | 29 | { |
9c636342 DB |
30 | if (!pxa2xx_ac97_try_cold_reset(ac97)) { |
31 | pxa2xx_ac97_try_warm_reset(ac97); | |
2c484df0 TI |
32 | } |
33 | ||
9c636342 | 34 | pxa2xx_ac97_finish_reset(ac97); |
2c484df0 TI |
35 | } |
36 | ||
d18f8376 | 37 | static struct snd_ac97_bus_ops pxa2xx_ac97_ops = { |
2c484df0 TI |
38 | .read = pxa2xx_ac97_read, |
39 | .write = pxa2xx_ac97_write, | |
40 | .reset = pxa2xx_ac97_reset, | |
41 | }; | |
42 | ||
d18f8376 | 43 | static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_out = { |
2c484df0 TI |
44 | .name = "AC97 PCM out", |
45 | .dev_addr = __PREG(PCDR), | |
87f3dd77 | 46 | .drcmr = &DRCMR(12), |
2c484df0 TI |
47 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | |
48 | DCMD_BURST32 | DCMD_WIDTH4, | |
49 | }; | |
50 | ||
d18f8376 | 51 | static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_in = { |
2c484df0 TI |
52 | .name = "AC97 PCM in", |
53 | .dev_addr = __PREG(PCDR), | |
87f3dd77 | 54 | .drcmr = &DRCMR(11), |
2c484df0 TI |
55 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | |
56 | DCMD_BURST32 | DCMD_WIDTH4, | |
57 | }; | |
58 | ||
d18f8376 TI |
59 | static struct snd_pcm *pxa2xx_ac97_pcm; |
60 | static struct snd_ac97 *pxa2xx_ac97_ac97; | |
2c484df0 | 61 | |
d18f8376 | 62 | static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream) |
2c484df0 | 63 | { |
d18f8376 | 64 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
65 | 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 | ||
d18f8376 | 83 | static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream) |
2c484df0 TI |
84 | { |
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 | ||
d18f8376 | 92 | static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream) |
2c484df0 | 93 | { |
d18f8376 | 94 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
95 | 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 | ||
d18f8376 | 100 | static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = { |
2c484df0 TI |
101 | .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 | ||
d18f8376 | 110 | static int pxa2xx_ac97_do_suspend(struct snd_card *card, pm_message_t state) |
2c484df0 | 111 | { |
792a6c51 TI |
112 | 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); | |
2c484df0 | 119 | |
9c636342 | 120 | return pxa2xx_ac97_hw_suspend(); |
2c484df0 TI |
121 | } |
122 | ||
d18f8376 | 123 | static int pxa2xx_ac97_do_resume(struct snd_card *card) |
2c484df0 | 124 | { |
792a6c51 | 125 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
9c636342 DB |
126 | int rc; |
127 | ||
128 | rc = pxa2xx_ac97_hw_resume(); | |
129 | if (rc) | |
130 | return rc; | |
792a6c51 | 131 | |
792a6c51 TI |
132 | 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); | |
2c484df0 TI |
136 | |
137 | return 0; | |
138 | } | |
139 | ||
3ae5eaec | 140 | static int pxa2xx_ac97_suspend(struct platform_device *dev, pm_message_t state) |
2c484df0 | 141 | { |
d18f8376 | 142 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
143 | int ret = 0; |
144 | ||
9480e307 | 145 | if (card) |
a55bfdc5 | 146 | ret = pxa2xx_ac97_do_suspend(card, PMSG_SUSPEND); |
2c484df0 TI |
147 | |
148 | return ret; | |
149 | } | |
150 | ||
3ae5eaec | 151 | static int pxa2xx_ac97_resume(struct platform_device *dev) |
2c484df0 | 152 | { |
d18f8376 | 153 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
154 | int ret = 0; |
155 | ||
9480e307 | 156 | if (card) |
a55bfdc5 | 157 | ret = pxa2xx_ac97_do_resume(card); |
2c484df0 TI |
158 | |
159 | return ret; | |
160 | } | |
161 | ||
162 | #else | |
163 | #define pxa2xx_ac97_suspend NULL | |
164 | #define pxa2xx_ac97_resume NULL | |
165 | #endif | |
166 | ||
788c6043 | 167 | static int __devinit pxa2xx_ac97_probe(struct platform_device *dev) |
2c484df0 | 168 | { |
d18f8376 TI |
169 | struct snd_card *card; |
170 | struct snd_ac97_bus *ac97_bus; | |
171 | struct snd_ac97_template ac97_template; | |
2c484df0 | 172 | int ret; |
4ac0478f MV |
173 | 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 | } | |
2c484df0 | 180 | |
bd7dd77c TI |
181 | ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
182 | THIS_MODULE, 0, &card); | |
183 | if (ret < 0) | |
2c484df0 TI |
184 | goto err; |
185 | ||
3ae5eaec RK |
186 | card->dev = &dev->dev; |
187 | strncpy(card->driver, dev->dev.driver->name, sizeof(card->driver)); | |
2c484df0 TI |
188 | |
189 | ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm); | |
190 | if (ret) | |
191 | goto err; | |
192 | ||
9c636342 DB |
193 | ret = pxa2xx_ac97_hw_probe(dev); |
194 | if (ret) | |
93873fbf | 195 | goto err; |
2c484df0 TI |
196 | |
197 | ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus); | |
198 | if (ret) | |
9c636342 | 199 | goto err_remove; |
2c484df0 TI |
200 | memset(&ac97_template, 0, sizeof(ac97_template)); |
201 | ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97); | |
202 | if (ret) | |
9c636342 | 203 | goto err_remove; |
2c484df0 TI |
204 | |
205 | snprintf(card->shortname, sizeof(card->shortname), | |
206 | "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97)); | |
207 | snprintf(card->longname, sizeof(card->longname), | |
3ae5eaec | 208 | "%s (%s)", dev->dev.driver->name, card->mixername); |
2c484df0 | 209 | |
367da152 | 210 | if (pdata && pdata->codec_pdata[0]) |
e2365bf3 | 211 | snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]); |
f78dfac9 | 212 | snd_card_set_dev(card, &dev->dev); |
2c484df0 TI |
213 | ret = snd_card_register(card); |
214 | if (ret == 0) { | |
3ae5eaec | 215 | platform_set_drvdata(dev, card); |
2c484df0 TI |
216 | return 0; |
217 | } | |
218 | ||
9c636342 DB |
219 | err_remove: |
220 | pxa2xx_ac97_hw_remove(dev); | |
221 | err: | |
2c484df0 TI |
222 | if (card) |
223 | snd_card_free(card); | |
4ac0478f | 224 | err_dev: |
2c484df0 TI |
225 | return ret; |
226 | } | |
227 | ||
788c6043 | 228 | static int __devexit pxa2xx_ac97_remove(struct platform_device *dev) |
2c484df0 | 229 | { |
d18f8376 | 230 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
231 | |
232 | if (card) { | |
233 | snd_card_free(card); | |
3ae5eaec | 234 | platform_set_drvdata(dev, NULL); |
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, |
788c6043 | 243 | .remove = __devexit_p(pxa2xx_ac97_remove), |
2c484df0 TI |
244 | .suspend = pxa2xx_ac97_suspend, |
245 | .resume = pxa2xx_ac97_resume, | |
3ae5eaec RK |
246 | .driver = { |
247 | .name = "pxa2xx-ac97", | |
8b45a209 | 248 | .owner = THIS_MODULE, |
3ae5eaec | 249 | }, |
2c484df0 TI |
250 | }; |
251 | ||
252 | static int __init pxa2xx_ac97_init(void) | |
253 | { | |
3ae5eaec | 254 | return platform_driver_register(&pxa2xx_ac97_driver); |
2c484df0 TI |
255 | } |
256 | ||
257 | static void __exit pxa2xx_ac97_exit(void) | |
258 | { | |
3ae5eaec | 259 | platform_driver_unregister(&pxa2xx_ac97_driver); |
2c484df0 TI |
260 | } |
261 | ||
262 | module_init(pxa2xx_ac97_init); | |
263 | module_exit(pxa2xx_ac97_exit); | |
264 | ||
265 | MODULE_AUTHOR("Nicolas Pitre"); | |
266 | MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); | |
267 | MODULE_LICENSE("GPL"); | |
8b45a209 | 268 | MODULE_ALIAS("platform:pxa2xx-ac97"); |