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 | |
22f08665 | 24 | #include <linux/platform_data/asoc-pxa.h> |
2c484df0 | 25 | |
6f8acad6 | 26 | static void pxa2xx_ac97_legacy_reset(struct snd_ac97 *ac97) |
2c484df0 | 27 | { |
6f8acad6 RJ |
28 | if (!pxa2xx_ac97_try_cold_reset()) |
29 | pxa2xx_ac97_try_warm_reset(); | |
2c484df0 | 30 | |
6f8acad6 RJ |
31 | pxa2xx_ac97_finish_reset(); |
32 | } | |
33 | ||
34 | static unsigned short pxa2xx_ac97_legacy_read(struct snd_ac97 *ac97, | |
35 | unsigned short reg) | |
36 | { | |
37 | int ret; | |
38 | ||
39 | ret = pxa2xx_ac97_read(ac97->num, reg); | |
40 | if (ret < 0) | |
41 | return 0; | |
42 | else | |
43 | return (unsigned short)(ret & 0xffff); | |
44 | } | |
45 | ||
46 | static void pxa2xx_ac97_legacy_write(struct snd_ac97 *ac97, | |
47 | unsigned short reg, unsigned short val) | |
48 | { | |
f4a85e00 | 49 | pxa2xx_ac97_write(ac97->num, reg, val); |
2c484df0 TI |
50 | } |
51 | ||
74d2bae3 | 52 | static const struct snd_ac97_bus_ops pxa2xx_ac97_ops = { |
6f8acad6 RJ |
53 | .read = pxa2xx_ac97_legacy_read, |
54 | .write = pxa2xx_ac97_legacy_write, | |
55 | .reset = pxa2xx_ac97_legacy_reset, | |
2c484df0 TI |
56 | }; |
57 | ||
d18f8376 TI |
58 | static struct snd_pcm *pxa2xx_ac97_pcm; |
59 | static struct snd_ac97 *pxa2xx_ac97_ac97; | |
2c484df0 | 60 | |
95acb005 | 61 | static int pxa2xx_ac97_pcm_open(struct snd_pcm_substream *substream) |
2c484df0 | 62 | { |
d18f8376 | 63 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 | 64 | pxa2xx_audio_ops_t *platform_ops; |
95acb005 DM |
65 | int ret, i; |
66 | ||
a7160670 | 67 | ret = pxa2xx_pcm_open(substream); |
95acb005 DM |
68 | if (ret) |
69 | return ret; | |
2c484df0 TI |
70 | |
71 | runtime->hw.channels_min = 2; | |
72 | runtime->hw.channels_max = 2; | |
73 | ||
95acb005 DM |
74 | i = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
75 | AC97_RATES_FRONT_DAC : AC97_RATES_ADC; | |
76 | runtime->hw.rates = pxa2xx_ac97_ac97->rates[i]; | |
2c484df0 TI |
77 | snd_pcm_limit_hw_rates(runtime); |
78 | ||
95acb005 DM |
79 | platform_ops = substream->pcm->card->dev->platform_data; |
80 | if (platform_ops && platform_ops->startup) { | |
81 | ret = platform_ops->startup(substream, platform_ops->priv); | |
82 | if (ret < 0) | |
a7160670 | 83 | pxa2xx_pcm_close(substream); |
95acb005 DM |
84 | } |
85 | ||
86 | return ret; | |
2c484df0 TI |
87 | } |
88 | ||
95acb005 | 89 | static int pxa2xx_ac97_pcm_close(struct snd_pcm_substream *substream) |
2c484df0 TI |
90 | { |
91 | pxa2xx_audio_ops_t *platform_ops; | |
92 | ||
95acb005 | 93 | platform_ops = substream->pcm->card->dev->platform_data; |
2c484df0 TI |
94 | if (platform_ops && platform_ops->shutdown) |
95 | platform_ops->shutdown(substream, platform_ops->priv); | |
95acb005 DM |
96 | |
97 | return 0; | |
2c484df0 TI |
98 | } |
99 | ||
d18f8376 | 100 | static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream) |
2c484df0 | 101 | { |
d18f8376 | 102 | struct snd_pcm_runtime *runtime = substream->runtime; |
2c484df0 TI |
103 | int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
104 | AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE; | |
95acb005 DM |
105 | int ret; |
106 | ||
a7160670 | 107 | ret = pxa2xx_pcm_prepare(substream); |
95acb005 DM |
108 | if (ret < 0) |
109 | return ret; | |
110 | ||
2c484df0 TI |
111 | return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate); |
112 | } | |
113 | ||
d34e4e00 | 114 | #ifdef CONFIG_PM_SLEEP |
2c484df0 | 115 | |
284e7ca7 | 116 | static int pxa2xx_ac97_do_suspend(struct snd_card *card) |
2c484df0 | 117 | { |
792a6c51 TI |
118 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
119 | ||
120 | snd_power_change_state(card, SNDRV_CTL_POWER_D3cold); | |
792a6c51 TI |
121 | snd_ac97_suspend(pxa2xx_ac97_ac97); |
122 | if (platform_ops && platform_ops->suspend) | |
123 | platform_ops->suspend(platform_ops->priv); | |
2c484df0 | 124 | |
9c636342 | 125 | return pxa2xx_ac97_hw_suspend(); |
2c484df0 TI |
126 | } |
127 | ||
d18f8376 | 128 | static int pxa2xx_ac97_do_resume(struct snd_card *card) |
2c484df0 | 129 | { |
792a6c51 | 130 | pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; |
9c636342 DB |
131 | int rc; |
132 | ||
133 | rc = pxa2xx_ac97_hw_resume(); | |
134 | if (rc) | |
135 | return rc; | |
792a6c51 | 136 | |
792a6c51 TI |
137 | if (platform_ops && platform_ops->resume) |
138 | platform_ops->resume(platform_ops->priv); | |
139 | snd_ac97_resume(pxa2xx_ac97_ac97); | |
140 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); | |
2c484df0 TI |
141 | |
142 | return 0; | |
143 | } | |
144 | ||
2ba9fd0d | 145 | static int pxa2xx_ac97_suspend(struct device *dev) |
2c484df0 | 146 | { |
2ba9fd0d | 147 | struct snd_card *card = dev_get_drvdata(dev); |
2c484df0 TI |
148 | int ret = 0; |
149 | ||
9480e307 | 150 | if (card) |
284e7ca7 | 151 | ret = pxa2xx_ac97_do_suspend(card); |
2c484df0 TI |
152 | |
153 | return ret; | |
154 | } | |
155 | ||
2ba9fd0d | 156 | static int pxa2xx_ac97_resume(struct device *dev) |
2c484df0 | 157 | { |
2ba9fd0d | 158 | struct snd_card *card = dev_get_drvdata(dev); |
2c484df0 TI |
159 | int ret = 0; |
160 | ||
9480e307 | 161 | if (card) |
a55bfdc5 | 162 | ret = pxa2xx_ac97_do_resume(card); |
2c484df0 TI |
163 | |
164 | return ret; | |
165 | } | |
166 | ||
284e7ca7 | 167 | static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_suspend, pxa2xx_ac97_resume); |
2c484df0 TI |
168 | #endif |
169 | ||
7afd1b0b | 170 | static const struct snd_pcm_ops pxa2xx_ac97_pcm_ops = { |
95acb005 DM |
171 | .open = pxa2xx_ac97_pcm_open, |
172 | .close = pxa2xx_ac97_pcm_close, | |
a7160670 | 173 | .hw_params = pxa2xx_pcm_hw_params, |
95acb005 DM |
174 | .prepare = pxa2xx_ac97_pcm_prepare, |
175 | .trigger = pxa2xx_pcm_trigger, | |
176 | .pointer = pxa2xx_pcm_pointer, | |
95acb005 DM |
177 | }; |
178 | ||
179 | ||
180 | static int pxa2xx_ac97_pcm_new(struct snd_card *card) | |
181 | { | |
182 | struct snd_pcm *pcm; | |
7f2da3d7 | 183 | int ret; |
95acb005 DM |
184 | |
185 | ret = snd_pcm_new(card, "PXA2xx-PCM", 0, 1, 1, &pcm); | |
186 | if (ret) | |
187 | goto out; | |
188 | ||
95acb005 DM |
189 | ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32)); |
190 | if (ret) | |
191 | goto out; | |
192 | ||
7f2da3d7 TI |
193 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pxa2xx_ac97_pcm_ops); |
194 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pxa2xx_ac97_pcm_ops); | |
195 | ret = pxa2xx_pcm_preallocate_dma_buffer(pcm); | |
95acb005 DM |
196 | if (ret) |
197 | goto out; | |
198 | ||
199 | pxa2xx_ac97_pcm = pcm; | |
200 | ret = 0; | |
201 | ||
202 | out: | |
203 | return ret; | |
204 | } | |
205 | ||
e21596bb | 206 | static int pxa2xx_ac97_probe(struct platform_device *dev) |
2c484df0 | 207 | { |
d18f8376 TI |
208 | struct snd_card *card; |
209 | struct snd_ac97_bus *ac97_bus; | |
210 | struct snd_ac97_template ac97_template; | |
2c484df0 | 211 | int ret; |
4ac0478f MV |
212 | pxa2xx_audio_ops_t *pdata = dev->dev.platform_data; |
213 | ||
214 | if (dev->id >= 0) { | |
215 | dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n"); | |
216 | ret = -ENXIO; | |
217 | goto err_dev; | |
218 | } | |
2c484df0 | 219 | |
4a875580 TI |
220 | ret = snd_card_new(&dev->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
221 | THIS_MODULE, 0, &card); | |
bd7dd77c | 222 | if (ret < 0) |
2c484df0 TI |
223 | goto err; |
224 | ||
75b1a8f9 | 225 | strscpy(card->driver, dev->dev.driver->name, sizeof(card->driver)); |
2c484df0 | 226 | |
95acb005 | 227 | ret = pxa2xx_ac97_pcm_new(card); |
2c484df0 TI |
228 | if (ret) |
229 | goto err; | |
230 | ||
9c636342 DB |
231 | ret = pxa2xx_ac97_hw_probe(dev); |
232 | if (ret) | |
93873fbf | 233 | goto err; |
2c484df0 TI |
234 | |
235 | ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus); | |
236 | if (ret) | |
9c636342 | 237 | goto err_remove; |
2c484df0 TI |
238 | memset(&ac97_template, 0, sizeof(ac97_template)); |
239 | ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97); | |
240 | if (ret) | |
9c636342 | 241 | goto err_remove; |
2c484df0 TI |
242 | |
243 | snprintf(card->shortname, sizeof(card->shortname), | |
244 | "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97)); | |
245 | snprintf(card->longname, sizeof(card->longname), | |
3ae5eaec | 246 | "%s (%s)", dev->dev.driver->name, card->mixername); |
2c484df0 | 247 | |
367da152 | 248 | if (pdata && pdata->codec_pdata[0]) |
e2365bf3 | 249 | snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]); |
2c484df0 TI |
250 | ret = snd_card_register(card); |
251 | if (ret == 0) { | |
3ae5eaec | 252 | platform_set_drvdata(dev, card); |
2c484df0 TI |
253 | return 0; |
254 | } | |
255 | ||
9c636342 DB |
256 | err_remove: |
257 | pxa2xx_ac97_hw_remove(dev); | |
258 | err: | |
2c484df0 TI |
259 | if (card) |
260 | snd_card_free(card); | |
4ac0478f | 261 | err_dev: |
2c484df0 TI |
262 | return ret; |
263 | } | |
264 | ||
e21596bb | 265 | static int pxa2xx_ac97_remove(struct platform_device *dev) |
2c484df0 | 266 | { |
d18f8376 | 267 | struct snd_card *card = platform_get_drvdata(dev); |
2c484df0 TI |
268 | |
269 | if (card) { | |
270 | snd_card_free(card); | |
9c636342 | 271 | pxa2xx_ac97_hw_remove(dev); |
2c484df0 TI |
272 | } |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
3ae5eaec | 277 | static struct platform_driver pxa2xx_ac97_driver = { |
2c484df0 | 278 | .probe = pxa2xx_ac97_probe, |
e21596bb | 279 | .remove = pxa2xx_ac97_remove, |
3ae5eaec RK |
280 | .driver = { |
281 | .name = "pxa2xx-ac97", | |
d34e4e00 | 282 | #ifdef CONFIG_PM_SLEEP |
2ba9fd0d MR |
283 | .pm = &pxa2xx_ac97_pm_ops, |
284 | #endif | |
3ae5eaec | 285 | }, |
2c484df0 TI |
286 | }; |
287 | ||
a09452ee | 288 | module_platform_driver(pxa2xx_ac97_driver); |
2c484df0 TI |
289 | |
290 | MODULE_AUTHOR("Nicolas Pitre"); | |
291 | MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); | |
292 | MODULE_LICENSE("GPL"); | |
8b45a209 | 293 | MODULE_ALIAS("platform:pxa2xx-ac97"); |