]>
Commit | Line | Data |
---|---|---|
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> | |
15 | #include <linux/platform_device.h> | |
16 | ||
17 | #include <sound/core.h> | |
18 | #include <sound/pcm.h> | |
19 | #include <sound/ac97_codec.h> | |
20 | #include <sound/initval.h> | |
21 | #include <sound/pxa2xx-lib.h> | |
22 | ||
23 | #include <mach/regs-ac97.h> | |
24 | #include <mach/audio.h> | |
25 | ||
26 | #include "pxa2xx-pcm.h" | |
27 | ||
28 | static void pxa2xx_ac97_reset(struct snd_ac97 *ac97) | |
29 | { | |
30 | if (!pxa2xx_ac97_try_cold_reset(ac97)) { | |
31 | pxa2xx_ac97_try_warm_reset(ac97); | |
32 | } | |
33 | ||
34 | pxa2xx_ac97_finish_reset(ac97); | |
35 | } | |
36 | ||
37 | static struct snd_ac97_bus_ops pxa2xx_ac97_ops = { | |
38 | .read = pxa2xx_ac97_read, | |
39 | .write = pxa2xx_ac97_write, | |
40 | .reset = pxa2xx_ac97_reset, | |
41 | }; | |
42 | ||
43 | static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_out = { | |
44 | .name = "AC97 PCM out", | |
45 | .dev_addr = __PREG(PCDR), | |
46 | .drcmr = &DRCMR(12), | |
47 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | | |
48 | DCMD_BURST32 | DCMD_WIDTH4, | |
49 | }; | |
50 | ||
51 | static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_in = { | |
52 | .name = "AC97 PCM in", | |
53 | .dev_addr = __PREG(PCDR), | |
54 | .drcmr = &DRCMR(11), | |
55 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | | |
56 | DCMD_BURST32 | DCMD_WIDTH4, | |
57 | }; | |
58 | ||
59 | static struct snd_pcm *pxa2xx_ac97_pcm; | |
60 | static struct snd_ac97 *pxa2xx_ac97_ac97; | |
61 | ||
62 | static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream) | |
63 | { | |
64 | struct snd_pcm_runtime *runtime = substream->runtime; | |
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 | ||
83 | static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream) | |
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 | ||
92 | static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream) | |
93 | { | |
94 | struct snd_pcm_runtime *runtime = substream->runtime; | |
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 | ||
100 | static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = { | |
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 | ||
110 | static int pxa2xx_ac97_do_suspend(struct snd_card *card, pm_message_t state) | |
111 | { | |
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); | |
119 | ||
120 | return pxa2xx_ac97_hw_suspend(); | |
121 | } | |
122 | ||
123 | static int pxa2xx_ac97_do_resume(struct snd_card *card) | |
124 | { | |
125 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; | |
126 | int rc; | |
127 | ||
128 | rc = pxa2xx_ac97_hw_resume(); | |
129 | if (rc) | |
130 | return rc; | |
131 | ||
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); | |
136 | ||
137 | return 0; | |
138 | } | |
139 | ||
140 | static int pxa2xx_ac97_suspend(struct device *dev) | |
141 | { | |
142 | struct snd_card *card = dev_get_drvdata(dev); | |
143 | int ret = 0; | |
144 | ||
145 | if (card) | |
146 | ret = pxa2xx_ac97_do_suspend(card, PMSG_SUSPEND); | |
147 | ||
148 | return ret; | |
149 | } | |
150 | ||
151 | static int pxa2xx_ac97_resume(struct device *dev) | |
152 | { | |
153 | struct snd_card *card = dev_get_drvdata(dev); | |
154 | int ret = 0; | |
155 | ||
156 | if (card) | |
157 | ret = pxa2xx_ac97_do_resume(card); | |
158 | ||
159 | return ret; | |
160 | } | |
161 | ||
162 | static const struct dev_pm_ops pxa2xx_ac97_pm_ops = { | |
163 | .suspend = pxa2xx_ac97_suspend, | |
164 | .resume = pxa2xx_ac97_resume, | |
165 | }; | |
166 | #endif | |
167 | ||
168 | static int __devinit pxa2xx_ac97_probe(struct platform_device *dev) | |
169 | { | |
170 | struct snd_card *card; | |
171 | struct snd_ac97_bus *ac97_bus; | |
172 | struct snd_ac97_template ac97_template; | |
173 | int ret; | |
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 | } | |
181 | ||
182 | ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, | |
183 | THIS_MODULE, 0, &card); | |
184 | if (ret < 0) | |
185 | goto err; | |
186 | ||
187 | card->dev = &dev->dev; | |
188 | strncpy(card->driver, dev->dev.driver->name, sizeof(card->driver)); | |
189 | ||
190 | ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm); | |
191 | if (ret) | |
192 | goto err; | |
193 | ||
194 | ret = pxa2xx_ac97_hw_probe(dev); | |
195 | if (ret) | |
196 | goto err; | |
197 | ||
198 | ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus); | |
199 | if (ret) | |
200 | goto err_remove; | |
201 | memset(&ac97_template, 0, sizeof(ac97_template)); | |
202 | ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97); | |
203 | if (ret) | |
204 | goto err_remove; | |
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), | |
209 | "%s (%s)", dev->dev.driver->name, card->mixername); | |
210 | ||
211 | if (pdata && pdata->codec_pdata[0]) | |
212 | snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]); | |
213 | snd_card_set_dev(card, &dev->dev); | |
214 | ret = snd_card_register(card); | |
215 | if (ret == 0) { | |
216 | platform_set_drvdata(dev, card); | |
217 | return 0; | |
218 | } | |
219 | ||
220 | err_remove: | |
221 | pxa2xx_ac97_hw_remove(dev); | |
222 | err: | |
223 | if (card) | |
224 | snd_card_free(card); | |
225 | err_dev: | |
226 | return ret; | |
227 | } | |
228 | ||
229 | static int __devexit pxa2xx_ac97_remove(struct platform_device *dev) | |
230 | { | |
231 | struct snd_card *card = platform_get_drvdata(dev); | |
232 | ||
233 | if (card) { | |
234 | snd_card_free(card); | |
235 | platform_set_drvdata(dev, NULL); | |
236 | pxa2xx_ac97_hw_remove(dev); | |
237 | } | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
242 | static struct platform_driver pxa2xx_ac97_driver = { | |
243 | .probe = pxa2xx_ac97_probe, | |
244 | .remove = __devexit_p(pxa2xx_ac97_remove), | |
245 | .driver = { | |
246 | .name = "pxa2xx-ac97", | |
247 | .owner = THIS_MODULE, | |
248 | #ifdef CONFIG_PM | |
249 | .pm = &pxa2xx_ac97_pm_ops, | |
250 | #endif | |
251 | }, | |
252 | }; | |
253 | ||
254 | static int __init pxa2xx_ac97_init(void) | |
255 | { | |
256 | return platform_driver_register(&pxa2xx_ac97_driver); | |
257 | } | |
258 | ||
259 | static void __exit pxa2xx_ac97_exit(void) | |
260 | { | |
261 | platform_driver_unregister(&pxa2xx_ac97_driver); | |
262 | } | |
263 | ||
264 | module_init(pxa2xx_ac97_init); | |
265 | module_exit(pxa2xx_ac97_exit); | |
266 | ||
267 | MODULE_AUTHOR("Nicolas Pitre"); | |
268 | MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); | |
269 | MODULE_LICENSE("GPL"); | |
270 | MODULE_ALIAS("platform:pxa2xx-ac97"); |