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 | |
a09e64fb RK |
23 | #include <mach/hardware.h> |
24 | #include <mach/pxa-regs.h> | |
1f017a99 | 25 | #include <mach/regs-ac97.h> |
a09e64fb | 26 | #include <mach/audio.h> |
2c484df0 TI |
27 | |
28 | #include "pxa2xx-pcm.h" | |
29 | ||
d18f8376 | 30 | static void pxa2xx_ac97_reset(struct snd_ac97 *ac97) |
2c484df0 | 31 | { |
9c636342 DB |
32 | if (!pxa2xx_ac97_try_cold_reset(ac97)) { |
33 | pxa2xx_ac97_try_warm_reset(ac97); | |
2c484df0 TI |
34 | } |
35 | ||
9c636342 | 36 | pxa2xx_ac97_finish_reset(ac97); |
2c484df0 TI |
37 | } |
38 | ||
d18f8376 | 39 | static struct snd_ac97_bus_ops pxa2xx_ac97_ops = { |
2c484df0 TI |
40 | .read = pxa2xx_ac97_read, |
41 | .write = pxa2xx_ac97_write, | |
42 | .reset = pxa2xx_ac97_reset, | |
43 | }; | |
44 | ||
d18f8376 | 45 | static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_out = { |
2c484df0 TI |
46 | .name = "AC97 PCM out", |
47 | .dev_addr = __PREG(PCDR), | |
87f3dd77 | 48 | .drcmr = &DRCMR(12), |
2c484df0 TI |
49 | .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | |
50 | DCMD_BURST32 | DCMD_WIDTH4, | |
51 | }; | |
52 | ||
d18f8376 | 53 | static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_in = { |
2c484df0 TI |
54 | .name = "AC97 PCM in", |
55 | .dev_addr = __PREG(PCDR), | |
87f3dd77 | 56 | .drcmr = &DRCMR(11), |
2c484df0 TI |
57 | .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | |
58 | DCMD_BURST32 | DCMD_WIDTH4, | |
59 | }; | |
60 | ||
d18f8376 TI |
61 | static struct snd_pcm *pxa2xx_ac97_pcm; |
62 | static struct snd_ac97 *pxa2xx_ac97_ac97; | |
2c484df0 | 63 | |
d18f8376 | 64 | static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream) |
2c484df0 | 65 | { |
d18f8376 | 66 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
67 | pxa2xx_audio_ops_t *platform_ops; |
68 | int r; | |
69 | ||
70 | runtime->hw.channels_min = 2; | |
71 | runtime->hw.channels_max = 2; | |
72 | ||
73 | r = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? | |
74 | AC97_RATES_FRONT_DAC : AC97_RATES_ADC; | |
75 | runtime->hw.rates = pxa2xx_ac97_ac97->rates[r]; | |
76 | snd_pcm_limit_hw_rates(runtime); | |
77 | ||
78 | platform_ops = substream->pcm->card->dev->platform_data; | |
79 | if (platform_ops && platform_ops->startup) | |
80 | return platform_ops->startup(substream, platform_ops->priv); | |
81 | else | |
82 | return 0; | |
83 | } | |
84 | ||
d18f8376 | 85 | static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream) |
2c484df0 TI |
86 | { |
87 | pxa2xx_audio_ops_t *platform_ops; | |
88 | ||
89 | platform_ops = substream->pcm->card->dev->platform_data; | |
90 | if (platform_ops && platform_ops->shutdown) | |
91 | platform_ops->shutdown(substream, platform_ops->priv); | |
92 | } | |
93 | ||
d18f8376 | 94 | static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream) |
2c484df0 | 95 | { |
d18f8376 | 96 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
97 | int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
98 | AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE; | |
99 | return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate); | |
100 | } | |
101 | ||
d18f8376 | 102 | static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = { |
2c484df0 TI |
103 | .playback_params = &pxa2xx_ac97_pcm_out, |
104 | .capture_params = &pxa2xx_ac97_pcm_in, | |
105 | .startup = pxa2xx_ac97_pcm_startup, | |
106 | .shutdown = pxa2xx_ac97_pcm_shutdown, | |
107 | .prepare = pxa2xx_ac97_pcm_prepare, | |
108 | }; | |
109 | ||
110 | #ifdef CONFIG_PM | |
111 | ||
d18f8376 | 112 | static int pxa2xx_ac97_do_suspend(struct snd_card *card, pm_message_t state) |
2c484df0 | 113 | { |
792a6c51 TI |
114 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
115 | ||
116 | snd_power_change_state(card, SNDRV_CTL_POWER_D3cold); | |
117 | snd_pcm_suspend_all(pxa2xx_ac97_pcm); | |
118 | snd_ac97_suspend(pxa2xx_ac97_ac97); | |
119 | if (platform_ops && platform_ops->suspend) | |
120 | platform_ops->suspend(platform_ops->priv); | |
2c484df0 | 121 | |
9c636342 | 122 | return pxa2xx_ac97_hw_suspend(); |
2c484df0 TI |
123 | } |
124 | ||
d18f8376 | 125 | static int pxa2xx_ac97_do_resume(struct snd_card *card) |
2c484df0 | 126 | { |
792a6c51 | 127 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
9c636342 DB |
128 | int rc; |
129 | ||
130 | rc = pxa2xx_ac97_hw_resume(); | |
131 | if (rc) | |
132 | return rc; | |
792a6c51 | 133 | |
792a6c51 TI |
134 | if (platform_ops && platform_ops->resume) |
135 | platform_ops->resume(platform_ops->priv); | |
136 | snd_ac97_resume(pxa2xx_ac97_ac97); | |
137 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
2c484df0 TI |
138 | |
139 | return 0; | |
140 | } | |
141 | ||
3ae5eaec | 142 | static int pxa2xx_ac97_suspend(struct platform_device *dev, pm_message_t state) |
2c484df0 | 143 | { |
d18f8376 | 144 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
145 | int ret = 0; |
146 | ||
9480e307 | 147 | if (card) |
a55bfdc5 | 148 | ret = pxa2xx_ac97_do_suspend(card, PMSG_SUSPEND); |
2c484df0 TI |
149 | |
150 | return ret; | |
151 | } | |
152 | ||
3ae5eaec | 153 | static int pxa2xx_ac97_resume(struct platform_device *dev) |
2c484df0 | 154 | { |
d18f8376 | 155 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
156 | int ret = 0; |
157 | ||
9480e307 | 158 | if (card) |
a55bfdc5 | 159 | ret = pxa2xx_ac97_do_resume(card); |
2c484df0 TI |
160 | |
161 | return ret; | |
162 | } | |
163 | ||
164 | #else | |
165 | #define pxa2xx_ac97_suspend NULL | |
166 | #define pxa2xx_ac97_resume NULL | |
167 | #endif | |
168 | ||
788c6043 | 169 | static int __devinit pxa2xx_ac97_probe(struct platform_device *dev) |
2c484df0 | 170 | { |
d18f8376 TI |
171 | struct snd_card *card; |
172 | struct snd_ac97_bus *ac97_bus; | |
173 | struct snd_ac97_template ac97_template; | |
2c484df0 TI |
174 | int ret; |
175 | ||
bd7dd77c TI |
176 | ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
177 | THIS_MODULE, 0, &card); | |
178 | if (ret < 0) | |
2c484df0 TI |
179 | goto err; |
180 | ||
3ae5eaec RK |
181 | card->dev = &dev->dev; |
182 | strncpy(card->driver, dev->dev.driver->name, sizeof(card->driver)); | |
2c484df0 TI |
183 | |
184 | ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm); | |
185 | if (ret) | |
186 | goto err; | |
187 | ||
9c636342 DB |
188 | ret = pxa2xx_ac97_hw_probe(dev); |
189 | if (ret) | |
93873fbf | 190 | goto err; |
2c484df0 TI |
191 | |
192 | ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus); | |
193 | if (ret) | |
9c636342 | 194 | goto err_remove; |
2c484df0 TI |
195 | memset(&ac97_template, 0, sizeof(ac97_template)); |
196 | ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97); | |
197 | if (ret) | |
9c636342 | 198 | goto err_remove; |
2c484df0 TI |
199 | |
200 | snprintf(card->shortname, sizeof(card->shortname), | |
201 | "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97)); | |
202 | snprintf(card->longname, sizeof(card->longname), | |
3ae5eaec | 203 | "%s (%s)", dev->dev.driver->name, card->mixername); |
2c484df0 | 204 | |
f78dfac9 | 205 | snd_card_set_dev(card, &dev->dev); |
2c484df0 TI |
206 | ret = snd_card_register(card); |
207 | if (ret == 0) { | |
3ae5eaec | 208 | platform_set_drvdata(dev, card); |
2c484df0 TI |
209 | return 0; |
210 | } | |
211 | ||
9c636342 DB |
212 | err_remove: |
213 | pxa2xx_ac97_hw_remove(dev); | |
214 | err: | |
2c484df0 TI |
215 | if (card) |
216 | snd_card_free(card); | |
2c484df0 TI |
217 | return ret; |
218 | } | |
219 | ||
788c6043 | 220 | static int __devexit pxa2xx_ac97_remove(struct platform_device *dev) |
2c484df0 | 221 | { |
d18f8376 | 222 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
223 | |
224 | if (card) { | |
225 | snd_card_free(card); | |
3ae5eaec | 226 | platform_set_drvdata(dev, NULL); |
9c636342 | 227 | pxa2xx_ac97_hw_remove(dev); |
2c484df0 TI |
228 | } |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
3ae5eaec | 233 | static struct platform_driver pxa2xx_ac97_driver = { |
2c484df0 | 234 | .probe = pxa2xx_ac97_probe, |
788c6043 | 235 | .remove = __devexit_p(pxa2xx_ac97_remove), |
2c484df0 TI |
236 | .suspend = pxa2xx_ac97_suspend, |
237 | .resume = pxa2xx_ac97_resume, | |
3ae5eaec RK |
238 | .driver = { |
239 | .name = "pxa2xx-ac97", | |
8b45a209 | 240 | .owner = THIS_MODULE, |
3ae5eaec | 241 | }, |
2c484df0 TI |
242 | }; |
243 | ||
244 | static int __init pxa2xx_ac97_init(void) | |
245 | { | |
3ae5eaec | 246 | return platform_driver_register(&pxa2xx_ac97_driver); |
2c484df0 TI |
247 | } |
248 | ||
249 | static void __exit pxa2xx_ac97_exit(void) | |
250 | { | |
3ae5eaec | 251 | platform_driver_unregister(&pxa2xx_ac97_driver); |
2c484df0 TI |
252 | } |
253 | ||
254 | module_init(pxa2xx_ac97_init); | |
255 | module_exit(pxa2xx_ac97_exit); | |
256 | ||
257 | MODULE_AUTHOR("Nicolas Pitre"); | |
258 | MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); | |
259 | MODULE_LICENSE("GPL"); | |
8b45a209 | 260 | MODULE_ALIAS("platform:pxa2xx-ac97"); |