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Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
2c484df0 TI |
2 | /* |
3 | * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip. | |
4 | * | |
5 | * Author: Nicolas Pitre | |
6 | * Created: Dec 02, 2004 | |
7 | * Copyright: MontaVista Software Inc. | |
2c484df0 TI |
8 | */ |
9 | ||
10 | #include <linux/init.h> | |
23019a73 | 11 | #include <linux/io.h> |
2c484df0 | 12 | #include <linux/module.h> |
d052d1be | 13 | #include <linux/platform_device.h> |
d65a1458 | 14 | #include <linux/dmaengine.h> |
95acb005 | 15 | #include <linux/dma-mapping.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> |
d65a1458 | 22 | #include <sound/dmaengine_pcm.h> |
2c484df0 | 23 | |
1f017a99 | 24 | #include <mach/regs-ac97.h> |
a09e64fb | 25 | #include <mach/audio.h> |
2c484df0 | 26 | |
6f8acad6 | 27 | static void pxa2xx_ac97_legacy_reset(struct snd_ac97 *ac97) |
2c484df0 | 28 | { |
6f8acad6 RJ |
29 | if (!pxa2xx_ac97_try_cold_reset()) |
30 | pxa2xx_ac97_try_warm_reset(); | |
2c484df0 | 31 | |
6f8acad6 RJ |
32 | pxa2xx_ac97_finish_reset(); |
33 | } | |
34 | ||
35 | static unsigned short pxa2xx_ac97_legacy_read(struct snd_ac97 *ac97, | |
36 | unsigned short reg) | |
37 | { | |
38 | int ret; | |
39 | ||
40 | ret = pxa2xx_ac97_read(ac97->num, reg); | |
41 | if (ret < 0) | |
42 | return 0; | |
43 | else | |
44 | return (unsigned short)(ret & 0xffff); | |
45 | } | |
46 | ||
47 | static void pxa2xx_ac97_legacy_write(struct snd_ac97 *ac97, | |
48 | unsigned short reg, unsigned short val) | |
49 | { | |
f4a85e00 | 50 | pxa2xx_ac97_write(ac97->num, reg, val); |
2c484df0 TI |
51 | } |
52 | ||
74d2bae3 | 53 | static const struct snd_ac97_bus_ops pxa2xx_ac97_ops = { |
6f8acad6 RJ |
54 | .read = pxa2xx_ac97_legacy_read, |
55 | .write = pxa2xx_ac97_legacy_write, | |
56 | .reset = pxa2xx_ac97_legacy_reset, | |
2c484df0 TI |
57 | }; |
58 | ||
d18f8376 TI |
59 | static struct snd_pcm *pxa2xx_ac97_pcm; |
60 | static struct snd_ac97 *pxa2xx_ac97_ac97; | |
2c484df0 | 61 | |
95acb005 | 62 | static int pxa2xx_ac97_pcm_open(struct snd_pcm_substream *substream) |
2c484df0 | 63 | { |
d18f8376 | 64 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 | 65 | pxa2xx_audio_ops_t *platform_ops; |
95acb005 DM |
66 | int ret, i; |
67 | ||
a7160670 | 68 | ret = pxa2xx_pcm_open(substream); |
95acb005 DM |
69 | if (ret) |
70 | return ret; | |
2c484df0 TI |
71 | |
72 | runtime->hw.channels_min = 2; | |
73 | runtime->hw.channels_max = 2; | |
74 | ||
95acb005 DM |
75 | i = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
76 | AC97_RATES_FRONT_DAC : AC97_RATES_ADC; | |
77 | runtime->hw.rates = pxa2xx_ac97_ac97->rates[i]; | |
2c484df0 TI |
78 | snd_pcm_limit_hw_rates(runtime); |
79 | ||
95acb005 DM |
80 | platform_ops = substream->pcm->card->dev->platform_data; |
81 | if (platform_ops && platform_ops->startup) { | |
82 | ret = platform_ops->startup(substream, platform_ops->priv); | |
83 | if (ret < 0) | |
a7160670 | 84 | pxa2xx_pcm_close(substream); |
95acb005 DM |
85 | } |
86 | ||
87 | return ret; | |
2c484df0 TI |
88 | } |
89 | ||
95acb005 | 90 | static int pxa2xx_ac97_pcm_close(struct snd_pcm_substream *substream) |
2c484df0 TI |
91 | { |
92 | pxa2xx_audio_ops_t *platform_ops; | |
93 | ||
95acb005 | 94 | platform_ops = substream->pcm->card->dev->platform_data; |
2c484df0 TI |
95 | if (platform_ops && platform_ops->shutdown) |
96 | platform_ops->shutdown(substream, platform_ops->priv); | |
95acb005 DM |
97 | |
98 | return 0; | |
2c484df0 TI |
99 | } |
100 | ||
d18f8376 | 101 | static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream) |
2c484df0 | 102 | { |
d18f8376 | 103 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
104 | int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
105 | AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE; | |
95acb005 DM |
106 | int ret; |
107 | ||
a7160670 | 108 | ret = pxa2xx_pcm_prepare(substream); |
95acb005 DM |
109 | if (ret < 0) |
110 | return ret; | |
111 | ||
2c484df0 TI |
112 | return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate); |
113 | } | |
114 | ||
d34e4e00 | 115 | #ifdef CONFIG_PM_SLEEP |
2c484df0 | 116 | |
284e7ca7 | 117 | static int pxa2xx_ac97_do_suspend(struct snd_card *card) |
2c484df0 | 118 | { |
792a6c51 TI |
119 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
120 | ||
121 | snd_power_change_state(card, SNDRV_CTL_POWER_D3cold); | |
792a6c51 TI |
122 | snd_ac97_suspend(pxa2xx_ac97_ac97); |
123 | if (platform_ops && platform_ops->suspend) | |
124 | platform_ops->suspend(platform_ops->priv); | |
2c484df0 | 125 | |
9c636342 | 126 | return pxa2xx_ac97_hw_suspend(); |
2c484df0 TI |
127 | } |
128 | ||
d18f8376 | 129 | static int pxa2xx_ac97_do_resume(struct snd_card *card) |
2c484df0 | 130 | { |
792a6c51 | 131 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
9c636342 DB |
132 | int rc; |
133 | ||
134 | rc = pxa2xx_ac97_hw_resume(); | |
135 | if (rc) | |
136 | return rc; | |
792a6c51 | 137 | |
792a6c51 TI |
138 | if (platform_ops && platform_ops->resume) |
139 | platform_ops->resume(platform_ops->priv); | |
140 | snd_ac97_resume(pxa2xx_ac97_ac97); | |
141 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
2c484df0 TI |
142 | |
143 | return 0; | |
144 | } | |
145 | ||
2ba9fd0d | 146 | static int pxa2xx_ac97_suspend(struct device *dev) |
2c484df0 | 147 | { |
2ba9fd0d | 148 | struct snd_card *card = dev_get_drvdata(dev); |
2c484df0 TI |
149 | int ret = 0; |
150 | ||
9480e307 | 151 | if (card) |
284e7ca7 | 152 | ret = pxa2xx_ac97_do_suspend(card); |
2c484df0 TI |
153 | |
154 | return ret; | |
155 | } | |
156 | ||
2ba9fd0d | 157 | static int pxa2xx_ac97_resume(struct device *dev) |
2c484df0 | 158 | { |
2ba9fd0d | 159 | struct snd_card *card = dev_get_drvdata(dev); |
2c484df0 TI |
160 | int ret = 0; |
161 | ||
9480e307 | 162 | if (card) |
a55bfdc5 | 163 | ret = pxa2xx_ac97_do_resume(card); |
2c484df0 TI |
164 | |
165 | return ret; | |
166 | } | |
167 | ||
284e7ca7 | 168 | static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_suspend, pxa2xx_ac97_resume); |
2c484df0 TI |
169 | #endif |
170 | ||
7afd1b0b | 171 | static const struct snd_pcm_ops pxa2xx_ac97_pcm_ops = { |
95acb005 DM |
172 | .open = pxa2xx_ac97_pcm_open, |
173 | .close = pxa2xx_ac97_pcm_close, | |
a7160670 DM |
174 | .hw_params = pxa2xx_pcm_hw_params, |
175 | .hw_free = pxa2xx_pcm_hw_free, | |
95acb005 DM |
176 | .prepare = pxa2xx_ac97_pcm_prepare, |
177 | .trigger = pxa2xx_pcm_trigger, | |
178 | .pointer = pxa2xx_pcm_pointer, | |
179 | .mmap = pxa2xx_pcm_mmap, | |
180 | }; | |
181 | ||
182 | ||
183 | static int pxa2xx_ac97_pcm_new(struct snd_card *card) | |
184 | { | |
185 | struct snd_pcm *pcm; | |
186 | int stream, ret; | |
187 | ||
188 | ret = snd_pcm_new(card, "PXA2xx-PCM", 0, 1, 1, &pcm); | |
189 | if (ret) | |
190 | goto out; | |
191 | ||
192 | pcm->private_free = pxa2xx_pcm_free_dma_buffers; | |
193 | ||
194 | ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32)); | |
195 | if (ret) | |
196 | goto out; | |
197 | ||
198 | stream = SNDRV_PCM_STREAM_PLAYBACK; | |
7afd1b0b | 199 | snd_pcm_set_ops(pcm, stream, &pxa2xx_ac97_pcm_ops); |
95acb005 DM |
200 | ret = pxa2xx_pcm_preallocate_dma_buffer(pcm, stream); |
201 | if (ret) | |
202 | goto out; | |
203 | ||
204 | stream = SNDRV_PCM_STREAM_CAPTURE; | |
7afd1b0b | 205 | snd_pcm_set_ops(pcm, stream, &pxa2xx_ac97_pcm_ops); |
95acb005 DM |
206 | ret = pxa2xx_pcm_preallocate_dma_buffer(pcm, stream); |
207 | if (ret) | |
208 | goto out; | |
209 | ||
210 | pxa2xx_ac97_pcm = pcm; | |
211 | ret = 0; | |
212 | ||
213 | out: | |
214 | return ret; | |
215 | } | |
216 | ||
e21596bb | 217 | static int pxa2xx_ac97_probe(struct platform_device *dev) |
2c484df0 | 218 | { |
d18f8376 TI |
219 | struct snd_card *card; |
220 | struct snd_ac97_bus *ac97_bus; | |
221 | struct snd_ac97_template ac97_template; | |
2c484df0 | 222 | int ret; |
4ac0478f MV |
223 | pxa2xx_audio_ops_t *pdata = dev->dev.platform_data; |
224 | ||
225 | if (dev->id >= 0) { | |
226 | dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n"); | |
227 | ret = -ENXIO; | |
228 | goto err_dev; | |
229 | } | |
2c484df0 | 230 | |
4a875580 TI |
231 | ret = snd_card_new(&dev->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
232 | THIS_MODULE, 0, &card); | |
bd7dd77c | 233 | if (ret < 0) |
2c484df0 TI |
234 | goto err; |
235 | ||
75b1a8f9 | 236 | strscpy(card->driver, dev->dev.driver->name, sizeof(card->driver)); |
2c484df0 | 237 | |
95acb005 | 238 | ret = pxa2xx_ac97_pcm_new(card); |
2c484df0 TI |
239 | if (ret) |
240 | goto err; | |
241 | ||
9c636342 DB |
242 | ret = pxa2xx_ac97_hw_probe(dev); |
243 | if (ret) | |
93873fbf | 244 | goto err; |
2c484df0 TI |
245 | |
246 | ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus); | |
247 | if (ret) | |
9c636342 | 248 | goto err_remove; |
2c484df0 TI |
249 | memset(&ac97_template, 0, sizeof(ac97_template)); |
250 | ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97); | |
251 | if (ret) | |
9c636342 | 252 | goto err_remove; |
2c484df0 TI |
253 | |
254 | snprintf(card->shortname, sizeof(card->shortname), | |
255 | "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97)); | |
256 | snprintf(card->longname, sizeof(card->longname), | |
3ae5eaec | 257 | "%s (%s)", dev->dev.driver->name, card->mixername); |
2c484df0 | 258 | |
367da152 | 259 | if (pdata && pdata->codec_pdata[0]) |
e2365bf3 | 260 | snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]); |
2c484df0 TI |
261 | ret = snd_card_register(card); |
262 | if (ret == 0) { | |
3ae5eaec | 263 | platform_set_drvdata(dev, card); |
2c484df0 TI |
264 | return 0; |
265 | } | |
266 | ||
9c636342 DB |
267 | err_remove: |
268 | pxa2xx_ac97_hw_remove(dev); | |
269 | err: | |
2c484df0 TI |
270 | if (card) |
271 | snd_card_free(card); | |
4ac0478f | 272 | err_dev: |
2c484df0 TI |
273 | return ret; |
274 | } | |
275 | ||
e21596bb | 276 | static int pxa2xx_ac97_remove(struct platform_device *dev) |
2c484df0 | 277 | { |
d18f8376 | 278 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
279 | |
280 | if (card) { | |
281 | snd_card_free(card); | |
9c636342 | 282 | pxa2xx_ac97_hw_remove(dev); |
2c484df0 TI |
283 | } |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
3ae5eaec | 288 | static struct platform_driver pxa2xx_ac97_driver = { |
2c484df0 | 289 | .probe = pxa2xx_ac97_probe, |
e21596bb | 290 | .remove = pxa2xx_ac97_remove, |
3ae5eaec RK |
291 | .driver = { |
292 | .name = "pxa2xx-ac97", | |
d34e4e00 | 293 | #ifdef CONFIG_PM_SLEEP |
2ba9fd0d MR |
294 | .pm = &pxa2xx_ac97_pm_ops, |
295 | #endif | |
3ae5eaec | 296 | }, |
2c484df0 TI |
297 | }; |
298 | ||
a09452ee | 299 | module_platform_driver(pxa2xx_ac97_driver); |
2c484df0 TI |
300 | |
301 | MODULE_AUTHOR("Nicolas Pitre"); | |
302 | MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); | |
303 | MODULE_LICENSE("GPL"); | |
8b45a209 | 304 | MODULE_ALIAS("platform:pxa2xx-ac97"); |