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 | { | |
50 | int __always_unused ret; | |
51 | ||
52 | ret = pxa2xx_ac97_write(ac97->num, reg, val); | |
2c484df0 TI |
53 | } |
54 | ||
74d2bae3 | 55 | static const struct snd_ac97_bus_ops pxa2xx_ac97_ops = { |
6f8acad6 RJ |
56 | .read = pxa2xx_ac97_legacy_read, |
57 | .write = pxa2xx_ac97_legacy_write, | |
58 | .reset = pxa2xx_ac97_legacy_reset, | |
2c484df0 TI |
59 | }; |
60 | ||
d18f8376 TI |
61 | static struct snd_pcm *pxa2xx_ac97_pcm; |
62 | static struct snd_ac97 *pxa2xx_ac97_ac97; | |
2c484df0 | 63 | |
95acb005 | 64 | static int pxa2xx_ac97_pcm_open(struct snd_pcm_substream *substream) |
2c484df0 | 65 | { |
d18f8376 | 66 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 | 67 | pxa2xx_audio_ops_t *platform_ops; |
95acb005 DM |
68 | int ret, i; |
69 | ||
a7160670 | 70 | ret = pxa2xx_pcm_open(substream); |
95acb005 DM |
71 | if (ret) |
72 | return ret; | |
2c484df0 TI |
73 | |
74 | runtime->hw.channels_min = 2; | |
75 | runtime->hw.channels_max = 2; | |
76 | ||
95acb005 DM |
77 | i = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
78 | AC97_RATES_FRONT_DAC : AC97_RATES_ADC; | |
79 | runtime->hw.rates = pxa2xx_ac97_ac97->rates[i]; | |
2c484df0 TI |
80 | snd_pcm_limit_hw_rates(runtime); |
81 | ||
95acb005 DM |
82 | platform_ops = substream->pcm->card->dev->platform_data; |
83 | if (platform_ops && platform_ops->startup) { | |
84 | ret = platform_ops->startup(substream, platform_ops->priv); | |
85 | if (ret < 0) | |
a7160670 | 86 | pxa2xx_pcm_close(substream); |
95acb005 DM |
87 | } |
88 | ||
89 | return ret; | |
2c484df0 TI |
90 | } |
91 | ||
95acb005 | 92 | static int pxa2xx_ac97_pcm_close(struct snd_pcm_substream *substream) |
2c484df0 TI |
93 | { |
94 | pxa2xx_audio_ops_t *platform_ops; | |
95 | ||
95acb005 | 96 | platform_ops = substream->pcm->card->dev->platform_data; |
2c484df0 TI |
97 | if (platform_ops && platform_ops->shutdown) |
98 | platform_ops->shutdown(substream, platform_ops->priv); | |
95acb005 DM |
99 | |
100 | return 0; | |
2c484df0 TI |
101 | } |
102 | ||
d18f8376 | 103 | static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream) |
2c484df0 | 104 | { |
d18f8376 | 105 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
106 | int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
107 | AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE; | |
95acb005 DM |
108 | int ret; |
109 | ||
a7160670 | 110 | ret = pxa2xx_pcm_prepare(substream); |
95acb005 DM |
111 | if (ret < 0) |
112 | return ret; | |
113 | ||
2c484df0 TI |
114 | return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate); |
115 | } | |
116 | ||
d34e4e00 | 117 | #ifdef CONFIG_PM_SLEEP |
2c484df0 | 118 | |
284e7ca7 | 119 | static int pxa2xx_ac97_do_suspend(struct snd_card *card) |
2c484df0 | 120 | { |
792a6c51 TI |
121 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
122 | ||
123 | snd_power_change_state(card, SNDRV_CTL_POWER_D3cold); | |
792a6c51 TI |
124 | snd_ac97_suspend(pxa2xx_ac97_ac97); |
125 | if (platform_ops && platform_ops->suspend) | |
126 | platform_ops->suspend(platform_ops->priv); | |
2c484df0 | 127 | |
9c636342 | 128 | return pxa2xx_ac97_hw_suspend(); |
2c484df0 TI |
129 | } |
130 | ||
d18f8376 | 131 | static int pxa2xx_ac97_do_resume(struct snd_card *card) |
2c484df0 | 132 | { |
792a6c51 | 133 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
9c636342 DB |
134 | int rc; |
135 | ||
136 | rc = pxa2xx_ac97_hw_resume(); | |
137 | if (rc) | |
138 | return rc; | |
792a6c51 | 139 | |
792a6c51 TI |
140 | if (platform_ops && platform_ops->resume) |
141 | platform_ops->resume(platform_ops->priv); | |
142 | snd_ac97_resume(pxa2xx_ac97_ac97); | |
143 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
2c484df0 TI |
144 | |
145 | return 0; | |
146 | } | |
147 | ||
2ba9fd0d | 148 | static int pxa2xx_ac97_suspend(struct device *dev) |
2c484df0 | 149 | { |
2ba9fd0d | 150 | struct snd_card *card = dev_get_drvdata(dev); |
2c484df0 TI |
151 | int ret = 0; |
152 | ||
9480e307 | 153 | if (card) |
284e7ca7 | 154 | ret = pxa2xx_ac97_do_suspend(card); |
2c484df0 TI |
155 | |
156 | return ret; | |
157 | } | |
158 | ||
2ba9fd0d | 159 | static int pxa2xx_ac97_resume(struct device *dev) |
2c484df0 | 160 | { |
2ba9fd0d | 161 | struct snd_card *card = dev_get_drvdata(dev); |
2c484df0 TI |
162 | int ret = 0; |
163 | ||
9480e307 | 164 | if (card) |
a55bfdc5 | 165 | ret = pxa2xx_ac97_do_resume(card); |
2c484df0 TI |
166 | |
167 | return ret; | |
168 | } | |
169 | ||
284e7ca7 | 170 | static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_suspend, pxa2xx_ac97_resume); |
2c484df0 TI |
171 | #endif |
172 | ||
7afd1b0b | 173 | static const struct snd_pcm_ops pxa2xx_ac97_pcm_ops = { |
95acb005 DM |
174 | .open = pxa2xx_ac97_pcm_open, |
175 | .close = pxa2xx_ac97_pcm_close, | |
a7160670 DM |
176 | .hw_params = pxa2xx_pcm_hw_params, |
177 | .hw_free = pxa2xx_pcm_hw_free, | |
95acb005 DM |
178 | .prepare = pxa2xx_ac97_pcm_prepare, |
179 | .trigger = pxa2xx_pcm_trigger, | |
180 | .pointer = pxa2xx_pcm_pointer, | |
181 | .mmap = pxa2xx_pcm_mmap, | |
182 | }; | |
183 | ||
184 | ||
185 | static int pxa2xx_ac97_pcm_new(struct snd_card *card) | |
186 | { | |
187 | struct snd_pcm *pcm; | |
188 | int stream, ret; | |
189 | ||
190 | ret = snd_pcm_new(card, "PXA2xx-PCM", 0, 1, 1, &pcm); | |
191 | if (ret) | |
192 | goto out; | |
193 | ||
194 | pcm->private_free = pxa2xx_pcm_free_dma_buffers; | |
195 | ||
196 | ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32)); | |
197 | if (ret) | |
198 | goto out; | |
199 | ||
200 | stream = SNDRV_PCM_STREAM_PLAYBACK; | |
7afd1b0b | 201 | snd_pcm_set_ops(pcm, stream, &pxa2xx_ac97_pcm_ops); |
95acb005 DM |
202 | ret = pxa2xx_pcm_preallocate_dma_buffer(pcm, stream); |
203 | if (ret) | |
204 | goto out; | |
205 | ||
206 | stream = SNDRV_PCM_STREAM_CAPTURE; | |
7afd1b0b | 207 | snd_pcm_set_ops(pcm, stream, &pxa2xx_ac97_pcm_ops); |
95acb005 DM |
208 | ret = pxa2xx_pcm_preallocate_dma_buffer(pcm, stream); |
209 | if (ret) | |
210 | goto out; | |
211 | ||
212 | pxa2xx_ac97_pcm = pcm; | |
213 | ret = 0; | |
214 | ||
215 | out: | |
216 | return ret; | |
217 | } | |
218 | ||
e21596bb | 219 | static int pxa2xx_ac97_probe(struct platform_device *dev) |
2c484df0 | 220 | { |
d18f8376 TI |
221 | struct snd_card *card; |
222 | struct snd_ac97_bus *ac97_bus; | |
223 | struct snd_ac97_template ac97_template; | |
2c484df0 | 224 | int ret; |
4ac0478f MV |
225 | pxa2xx_audio_ops_t *pdata = dev->dev.platform_data; |
226 | ||
227 | if (dev->id >= 0) { | |
228 | dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n"); | |
229 | ret = -ENXIO; | |
230 | goto err_dev; | |
231 | } | |
2c484df0 | 232 | |
4a875580 TI |
233 | ret = snd_card_new(&dev->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
234 | THIS_MODULE, 0, &card); | |
bd7dd77c | 235 | if (ret < 0) |
2c484df0 TI |
236 | goto err; |
237 | ||
75b1a8f9 | 238 | strscpy(card->driver, dev->dev.driver->name, sizeof(card->driver)); |
2c484df0 | 239 | |
95acb005 | 240 | ret = pxa2xx_ac97_pcm_new(card); |
2c484df0 TI |
241 | if (ret) |
242 | goto err; | |
243 | ||
9c636342 DB |
244 | ret = pxa2xx_ac97_hw_probe(dev); |
245 | if (ret) | |
93873fbf | 246 | goto err; |
2c484df0 TI |
247 | |
248 | ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus); | |
249 | if (ret) | |
9c636342 | 250 | goto err_remove; |
2c484df0 TI |
251 | memset(&ac97_template, 0, sizeof(ac97_template)); |
252 | ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97); | |
253 | if (ret) | |
9c636342 | 254 | goto err_remove; |
2c484df0 TI |
255 | |
256 | snprintf(card->shortname, sizeof(card->shortname), | |
257 | "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97)); | |
258 | snprintf(card->longname, sizeof(card->longname), | |
3ae5eaec | 259 | "%s (%s)", dev->dev.driver->name, card->mixername); |
2c484df0 | 260 | |
367da152 | 261 | if (pdata && pdata->codec_pdata[0]) |
e2365bf3 | 262 | snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]); |
2c484df0 TI |
263 | ret = snd_card_register(card); |
264 | if (ret == 0) { | |
3ae5eaec | 265 | platform_set_drvdata(dev, card); |
2c484df0 TI |
266 | return 0; |
267 | } | |
268 | ||
9c636342 DB |
269 | err_remove: |
270 | pxa2xx_ac97_hw_remove(dev); | |
271 | err: | |
2c484df0 TI |
272 | if (card) |
273 | snd_card_free(card); | |
4ac0478f | 274 | err_dev: |
2c484df0 TI |
275 | return ret; |
276 | } | |
277 | ||
e21596bb | 278 | static int pxa2xx_ac97_remove(struct platform_device *dev) |
2c484df0 | 279 | { |
d18f8376 | 280 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
281 | |
282 | if (card) { | |
283 | snd_card_free(card); | |
9c636342 | 284 | pxa2xx_ac97_hw_remove(dev); |
2c484df0 TI |
285 | } |
286 | ||
287 | return 0; | |
288 | } | |
289 | ||
3ae5eaec | 290 | static struct platform_driver pxa2xx_ac97_driver = { |
2c484df0 | 291 | .probe = pxa2xx_ac97_probe, |
e21596bb | 292 | .remove = pxa2xx_ac97_remove, |
3ae5eaec RK |
293 | .driver = { |
294 | .name = "pxa2xx-ac97", | |
d34e4e00 | 295 | #ifdef CONFIG_PM_SLEEP |
2ba9fd0d MR |
296 | .pm = &pxa2xx_ac97_pm_ops, |
297 | #endif | |
3ae5eaec | 298 | }, |
2c484df0 TI |
299 | }; |
300 | ||
a09452ee | 301 | module_platform_driver(pxa2xx_ac97_driver); |
2c484df0 TI |
302 | |
303 | MODULE_AUTHOR("Nicolas Pitre"); | |
304 | MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); | |
305 | MODULE_LICENSE("GPL"); | |
8b45a209 | 306 | MODULE_ALIAS("platform:pxa2xx-ac97"); |