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13#include <linux/init.h>
14#include <linux/module.h>
15#include <linux/platform_device.h>
16
17#include <sound/core.h>
18#include <sound/pcm.h>
19#include <sound/ac97_codec.h>
20#include <sound/initval.h>
21#include <sound/pxa2xx-lib.h>
22
23#include <mach/regs-ac97.h>
24#include <mach/audio.h>
25
26#include "pxa2xx-pcm.h"
27
28static void pxa2xx_ac97_reset(struct snd_ac97 *ac97)
29{
30 if (!pxa2xx_ac97_try_cold_reset(ac97)) {
31 pxa2xx_ac97_try_warm_reset(ac97);
32 }
33
34 pxa2xx_ac97_finish_reset(ac97);
35}
36
37static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
38 .read = pxa2xx_ac97_read,
39 .write = pxa2xx_ac97_write,
40 .reset = pxa2xx_ac97_reset,
41};
42
43static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_out = {
44 .name = "AC97 PCM out",
45 .dev_addr = __PREG(PCDR),
46 .drcmr = &DRCMR(12),
47 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
48 DCMD_BURST32 | DCMD_WIDTH4,
49};
50
51static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_in = {
52 .name = "AC97 PCM in",
53 .dev_addr = __PREG(PCDR),
54 .drcmr = &DRCMR(11),
55 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
56 DCMD_BURST32 | DCMD_WIDTH4,
57};
58
59static struct snd_pcm *pxa2xx_ac97_pcm;
60static struct snd_ac97 *pxa2xx_ac97_ac97;
61
62static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream)
63{
64 struct snd_pcm_runtime *runtime = substream->runtime;
65 pxa2xx_audio_ops_t *platform_ops;
66 int r;
67
68 runtime->hw.channels_min = 2;
69 runtime->hw.channels_max = 2;
70
71 r = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
72 AC97_RATES_FRONT_DAC : AC97_RATES_ADC;
73 runtime->hw.rates = pxa2xx_ac97_ac97->rates[r];
74 snd_pcm_limit_hw_rates(runtime);
75
76 platform_ops = substream->pcm->card->dev->platform_data;
77 if (platform_ops && platform_ops->startup)
78 return platform_ops->startup(substream, platform_ops->priv);
79 else
80 return 0;
81}
82
83static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream)
84{
85 pxa2xx_audio_ops_t *platform_ops;
86
87 platform_ops = substream->pcm->card->dev->platform_data;
88 if (platform_ops && platform_ops->shutdown)
89 platform_ops->shutdown(substream, platform_ops->priv);
90}
91
92static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream)
93{
94 struct snd_pcm_runtime *runtime = substream->runtime;
95 int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
96 AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
97 return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate);
98}
99
100static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = {
101 .playback_params = &pxa2xx_ac97_pcm_out,
102 .capture_params = &pxa2xx_ac97_pcm_in,
103 .startup = pxa2xx_ac97_pcm_startup,
104 .shutdown = pxa2xx_ac97_pcm_shutdown,
105 .prepare = pxa2xx_ac97_pcm_prepare,
106};
107
108#ifdef CONFIG_PM
109
110static int pxa2xx_ac97_do_suspend(struct snd_card *card, pm_message_t state)
111{
112 pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
113
114 snd_power_change_state(card, SNDRV_CTL_POWER_D3cold);
115 snd_pcm_suspend_all(pxa2xx_ac97_pcm);
116 snd_ac97_suspend(pxa2xx_ac97_ac97);
117 if (platform_ops && platform_ops->suspend)
118 platform_ops->suspend(platform_ops->priv);
119
120 return pxa2xx_ac97_hw_suspend();
121}
122
123static int pxa2xx_ac97_do_resume(struct snd_card *card)
124{
125 pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
126 int rc;
127
128 rc = pxa2xx_ac97_hw_resume();
129 if (rc)
130 return rc;
131
132 if (platform_ops && platform_ops->resume)
133 platform_ops->resume(platform_ops->priv);
134 snd_ac97_resume(pxa2xx_ac97_ac97);
135 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
136
137 return 0;
138}
139
140static int pxa2xx_ac97_suspend(struct device *dev)
141{
142 struct snd_card *card = dev_get_drvdata(dev);
143 int ret = 0;
144
145 if (card)
146 ret = pxa2xx_ac97_do_suspend(card, PMSG_SUSPEND);
147
148 return ret;
149}
150
151static int pxa2xx_ac97_resume(struct device *dev)
152{
153 struct snd_card *card = dev_get_drvdata(dev);
154 int ret = 0;
155
156 if (card)
157 ret = pxa2xx_ac97_do_resume(card);
158
159 return ret;
160}
161
162static struct dev_pm_ops pxa2xx_ac97_pm_ops = {
163 .suspend = pxa2xx_ac97_suspend,
164 .resume = pxa2xx_ac97_resume,
165};
166#endif
167
168static int __devinit pxa2xx_ac97_probe(struct platform_device *dev)
169{
170 struct snd_card *card;
171 struct snd_ac97_bus *ac97_bus;
172 struct snd_ac97_template ac97_template;
173 int ret;
174 pxa2xx_audio_ops_t *pdata = dev->dev.platform_data;
175
176 if (dev->id >= 0) {
177 dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n");
178 ret = -ENXIO;
179 goto err_dev;
180 }
181
182 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
183 THIS_MODULE, 0, &card);
184 if (ret < 0)
185 goto err;
186
187 card->dev = &dev->dev;
188 strncpy(card->driver, dev->dev.driver->name, sizeof(card->driver));
189
190 ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm);
191 if (ret)
192 goto err;
193
194 ret = pxa2xx_ac97_hw_probe(dev);
195 if (ret)
196 goto err;
197
198 ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus);
199 if (ret)
200 goto err_remove;
201 memset(&ac97_template, 0, sizeof(ac97_template));
202 ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97);
203 if (ret)
204 goto err_remove;
205
206 snprintf(card->shortname, sizeof(card->shortname),
207 "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97));
208 snprintf(card->longname, sizeof(card->longname),
209 "%s (%s)", dev->dev.driver->name, card->mixername);
210
211 if (pdata && pdata->codec_pdata[0])
212 snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]);
213 snd_card_set_dev(card, &dev->dev);
214 ret = snd_card_register(card);
215 if (ret == 0) {
216 platform_set_drvdata(dev, card);
217 return 0;
218 }
219
220err_remove:
221 pxa2xx_ac97_hw_remove(dev);
222err:
223 if (card)
224 snd_card_free(card);
225err_dev:
226 return ret;
227}
228
229static int __devexit pxa2xx_ac97_remove(struct platform_device *dev)
230{
231 struct snd_card *card = platform_get_drvdata(dev);
232
233 if (card) {
234 snd_card_free(card);
235 platform_set_drvdata(dev, NULL);
236 pxa2xx_ac97_hw_remove(dev);
237 }
238
239 return 0;
240}
241
242static struct platform_driver pxa2xx_ac97_driver = {
243 .probe = pxa2xx_ac97_probe,
244 .remove = __devexit_p(pxa2xx_ac97_remove),
245 .driver = {
246 .name = "pxa2xx-ac97",
247 .owner = THIS_MODULE,
248#ifdef CONFIG_PM
249 .pm = &pxa2xx_ac97_pm_ops,
250#endif
251 },
252};
253
254static int __init pxa2xx_ac97_init(void)
255{
256 return platform_driver_register(&pxa2xx_ac97_driver);
257}
258
259static void __exit pxa2xx_ac97_exit(void)
260{
261 platform_driver_unregister(&pxa2xx_ac97_driver);
262}
263
264module_init(pxa2xx_ac97_init);
265module_exit(pxa2xx_ac97_exit);
266
267MODULE_AUTHOR("Nicolas Pitre");
268MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
269MODULE_LICENSE("GPL");
270MODULE_ALIAS("platform:pxa2xx-ac97");
271
