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> | |
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> |
58ceb57e | 18 | #include <linux/dma/pxa-dma.h> |
2c484df0 | 19 | |
2c484df0 TI |
20 | #include <sound/core.h> |
21 | #include <sound/pcm.h> | |
22 | #include <sound/ac97_codec.h> | |
23 | #include <sound/initval.h> | |
9c636342 | 24 | #include <sound/pxa2xx-lib.h> |
d65a1458 | 25 | #include <sound/dmaengine_pcm.h> |
2c484df0 | 26 | |
1f017a99 | 27 | #include <mach/regs-ac97.h> |
a09e64fb | 28 | #include <mach/audio.h> |
2c484df0 TI |
29 | |
30 | #include "pxa2xx-pcm.h" | |
31 | ||
d18f8376 | 32 | static void pxa2xx_ac97_reset(struct snd_ac97 *ac97) |
2c484df0 | 33 | { |
9c636342 DB |
34 | if (!pxa2xx_ac97_try_cold_reset(ac97)) { |
35 | pxa2xx_ac97_try_warm_reset(ac97); | |
2c484df0 TI |
36 | } |
37 | ||
9c636342 | 38 | pxa2xx_ac97_finish_reset(ac97); |
2c484df0 TI |
39 | } |
40 | ||
d18f8376 | 41 | static struct snd_ac97_bus_ops pxa2xx_ac97_ops = { |
2c484df0 TI |
42 | .read = pxa2xx_ac97_read, |
43 | .write = pxa2xx_ac97_write, | |
44 | .reset = pxa2xx_ac97_reset, | |
45 | }; | |
46 | ||
58ceb57e DM |
47 | static struct pxad_param pxa2xx_ac97_pcm_out_req = { |
48 | .prio = PXAD_PRIO_LOWEST, | |
49 | .drcmr = 12, | |
50 | }; | |
51 | ||
d65a1458 DM |
52 | static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_out = { |
53 | .addr = __PREG(PCDR), | |
54 | .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, | |
55 | .maxburst = 32, | |
56 | .filter_data = &pxa2xx_ac97_pcm_out_req, | |
2c484df0 TI |
57 | }; |
58 | ||
58ceb57e DM |
59 | static struct pxad_param pxa2xx_ac97_pcm_in_req = { |
60 | .prio = PXAD_PRIO_LOWEST, | |
61 | .drcmr = 11, | |
62 | }; | |
63 | ||
d65a1458 DM |
64 | static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_in = { |
65 | .addr = __PREG(PCDR), | |
66 | .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, | |
67 | .maxburst = 32, | |
68 | .filter_data = &pxa2xx_ac97_pcm_in_req, | |
2c484df0 TI |
69 | }; |
70 | ||
d18f8376 TI |
71 | static struct snd_pcm *pxa2xx_ac97_pcm; |
72 | static struct snd_ac97 *pxa2xx_ac97_ac97; | |
2c484df0 | 73 | |
d18f8376 | 74 | static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream) |
2c484df0 | 75 | { |
d18f8376 | 76 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
77 | pxa2xx_audio_ops_t *platform_ops; |
78 | int r; | |
79 | ||
80 | runtime->hw.channels_min = 2; | |
81 | runtime->hw.channels_max = 2; | |
82 | ||
83 | r = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? | |
84 | AC97_RATES_FRONT_DAC : AC97_RATES_ADC; | |
85 | runtime->hw.rates = pxa2xx_ac97_ac97->rates[r]; | |
86 | snd_pcm_limit_hw_rates(runtime); | |
87 | ||
88 | platform_ops = substream->pcm->card->dev->platform_data; | |
89 | if (platform_ops && platform_ops->startup) | |
90 | return platform_ops->startup(substream, platform_ops->priv); | |
91 | else | |
92 | return 0; | |
93 | } | |
94 | ||
d18f8376 | 95 | static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream) |
2c484df0 TI |
96 | { |
97 | pxa2xx_audio_ops_t *platform_ops; | |
98 | ||
99 | platform_ops = substream->pcm->card->dev->platform_data; | |
100 | if (platform_ops && platform_ops->shutdown) | |
101 | platform_ops->shutdown(substream, platform_ops->priv); | |
102 | } | |
103 | ||
d18f8376 | 104 | static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream) |
2c484df0 | 105 | { |
d18f8376 | 106 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
107 | int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
108 | AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE; | |
109 | return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate); | |
110 | } | |
111 | ||
d18f8376 | 112 | static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = { |
2c484df0 TI |
113 | .playback_params = &pxa2xx_ac97_pcm_out, |
114 | .capture_params = &pxa2xx_ac97_pcm_in, | |
115 | .startup = pxa2xx_ac97_pcm_startup, | |
116 | .shutdown = pxa2xx_ac97_pcm_shutdown, | |
117 | .prepare = pxa2xx_ac97_pcm_prepare, | |
118 | }; | |
119 | ||
d34e4e00 | 120 | #ifdef CONFIG_PM_SLEEP |
2c484df0 | 121 | |
284e7ca7 | 122 | static int pxa2xx_ac97_do_suspend(struct snd_card *card) |
2c484df0 | 123 | { |
792a6c51 TI |
124 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
125 | ||
126 | snd_power_change_state(card, SNDRV_CTL_POWER_D3cold); | |
127 | snd_pcm_suspend_all(pxa2xx_ac97_pcm); | |
128 | snd_ac97_suspend(pxa2xx_ac97_ac97); | |
129 | if (platform_ops && platform_ops->suspend) | |
130 | platform_ops->suspend(platform_ops->priv); | |
2c484df0 | 131 | |
9c636342 | 132 | return pxa2xx_ac97_hw_suspend(); |
2c484df0 TI |
133 | } |
134 | ||
d18f8376 | 135 | static int pxa2xx_ac97_do_resume(struct snd_card *card) |
2c484df0 | 136 | { |
792a6c51 | 137 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
9c636342 DB |
138 | int rc; |
139 | ||
140 | rc = pxa2xx_ac97_hw_resume(); | |
141 | if (rc) | |
142 | return rc; | |
792a6c51 | 143 | |
792a6c51 TI |
144 | if (platform_ops && platform_ops->resume) |
145 | platform_ops->resume(platform_ops->priv); | |
146 | snd_ac97_resume(pxa2xx_ac97_ac97); | |
147 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
2c484df0 TI |
148 | |
149 | return 0; | |
150 | } | |
151 | ||
2ba9fd0d | 152 | static int pxa2xx_ac97_suspend(struct device *dev) |
2c484df0 | 153 | { |
2ba9fd0d | 154 | struct snd_card *card = dev_get_drvdata(dev); |
2c484df0 TI |
155 | int ret = 0; |
156 | ||
9480e307 | 157 | if (card) |
284e7ca7 | 158 | ret = pxa2xx_ac97_do_suspend(card); |
2c484df0 TI |
159 | |
160 | return ret; | |
161 | } | |
162 | ||
2ba9fd0d | 163 | static int pxa2xx_ac97_resume(struct device *dev) |
2c484df0 | 164 | { |
2ba9fd0d | 165 | struct snd_card *card = dev_get_drvdata(dev); |
2c484df0 TI |
166 | int ret = 0; |
167 | ||
9480e307 | 168 | if (card) |
a55bfdc5 | 169 | ret = pxa2xx_ac97_do_resume(card); |
2c484df0 TI |
170 | |
171 | return ret; | |
172 | } | |
173 | ||
284e7ca7 | 174 | static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_suspend, pxa2xx_ac97_resume); |
2c484df0 TI |
175 | #endif |
176 | ||
e21596bb | 177 | static int pxa2xx_ac97_probe(struct platform_device *dev) |
2c484df0 | 178 | { |
d18f8376 TI |
179 | struct snd_card *card; |
180 | struct snd_ac97_bus *ac97_bus; | |
181 | struct snd_ac97_template ac97_template; | |
2c484df0 | 182 | int ret; |
4ac0478f MV |
183 | pxa2xx_audio_ops_t *pdata = dev->dev.platform_data; |
184 | ||
185 | if (dev->id >= 0) { | |
186 | dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n"); | |
187 | ret = -ENXIO; | |
188 | goto err_dev; | |
189 | } | |
2c484df0 | 190 | |
4a875580 TI |
191 | ret = snd_card_new(&dev->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
192 | THIS_MODULE, 0, &card); | |
bd7dd77c | 193 | if (ret < 0) |
2c484df0 TI |
194 | goto err; |
195 | ||
57a4451d | 196 | strlcpy(card->driver, dev->dev.driver->name, sizeof(card->driver)); |
2c484df0 TI |
197 | |
198 | ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm); | |
199 | if (ret) | |
200 | goto err; | |
201 | ||
9c636342 DB |
202 | ret = pxa2xx_ac97_hw_probe(dev); |
203 | if (ret) | |
93873fbf | 204 | goto err; |
2c484df0 TI |
205 | |
206 | ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus); | |
207 | if (ret) | |
9c636342 | 208 | goto err_remove; |
2c484df0 TI |
209 | memset(&ac97_template, 0, sizeof(ac97_template)); |
210 | ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97); | |
211 | if (ret) | |
9c636342 | 212 | goto err_remove; |
2c484df0 TI |
213 | |
214 | snprintf(card->shortname, sizeof(card->shortname), | |
215 | "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97)); | |
216 | snprintf(card->longname, sizeof(card->longname), | |
3ae5eaec | 217 | "%s (%s)", dev->dev.driver->name, card->mixername); |
2c484df0 | 218 | |
367da152 | 219 | if (pdata && pdata->codec_pdata[0]) |
e2365bf3 | 220 | snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]); |
2c484df0 TI |
221 | ret = snd_card_register(card); |
222 | if (ret == 0) { | |
3ae5eaec | 223 | platform_set_drvdata(dev, card); |
2c484df0 TI |
224 | return 0; |
225 | } | |
226 | ||
9c636342 DB |
227 | err_remove: |
228 | pxa2xx_ac97_hw_remove(dev); | |
229 | err: | |
2c484df0 TI |
230 | if (card) |
231 | snd_card_free(card); | |
4ac0478f | 232 | err_dev: |
2c484df0 TI |
233 | return ret; |
234 | } | |
235 | ||
e21596bb | 236 | static int pxa2xx_ac97_remove(struct platform_device *dev) |
2c484df0 | 237 | { |
d18f8376 | 238 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
239 | |
240 | if (card) { | |
241 | snd_card_free(card); | |
9c636342 | 242 | pxa2xx_ac97_hw_remove(dev); |
2c484df0 TI |
243 | } |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
3ae5eaec | 248 | static struct platform_driver pxa2xx_ac97_driver = { |
2c484df0 | 249 | .probe = pxa2xx_ac97_probe, |
e21596bb | 250 | .remove = pxa2xx_ac97_remove, |
3ae5eaec RK |
251 | .driver = { |
252 | .name = "pxa2xx-ac97", | |
d34e4e00 | 253 | #ifdef CONFIG_PM_SLEEP |
2ba9fd0d MR |
254 | .pm = &pxa2xx_ac97_pm_ops, |
255 | #endif | |
3ae5eaec | 256 | }, |
2c484df0 TI |
257 | }; |
258 | ||
a09452ee | 259 | module_platform_driver(pxa2xx_ac97_driver); |
2c484df0 TI |
260 | |
261 | MODULE_AUTHOR("Nicolas Pitre"); | |
262 | MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); | |
263 | MODULE_LICENSE("GPL"); | |
8b45a209 | 264 | MODULE_ALIAS("platform:pxa2xx-ac97"); |