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13#include <linux/init.h>
14#include <linux/io.h>
15#include <linux/module.h>
16#include <linux/platform_device.h>
17#include <linux/dmaengine.h>
18#include <linux/dma/pxa-dma.h>
19
20#include <sound/core.h>
21#include <sound/ac97_codec.h>
22#include <sound/soc.h>
23#include <sound/pxa2xx-lib.h>
24#include <sound/dmaengine_pcm.h>
25
26#include <mach/hardware.h>
27#include <mach/regs-ac97.h>
28#include <mach/audio.h>
29
30#include "pxa2xx-ac97.h"
31
32static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
33{
34 pxa2xx_ac97_try_warm_reset(ac97);
35
36 pxa2xx_ac97_finish_reset(ac97);
37}
38
39static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
40{
41 pxa2xx_ac97_try_cold_reset(ac97);
42
43 pxa2xx_ac97_finish_reset(ac97);
44}
45
46static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
47 .read = pxa2xx_ac97_read,
48 .write = pxa2xx_ac97_write,
49 .warm_reset = pxa2xx_ac97_warm_reset,
50 .reset = pxa2xx_ac97_cold_reset,
51};
52
53static struct pxad_param pxa2xx_ac97_pcm_stereo_in_req = {
54 .prio = PXAD_PRIO_LOWEST,
55 .drcmr = 11,
56};
57
58static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
59 .addr = __PREG(PCDR),
60 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
61 .maxburst = 32,
62 .filter_data = &pxa2xx_ac97_pcm_stereo_in_req,
63};
64
65static struct pxad_param pxa2xx_ac97_pcm_stereo_out_req = {
66 .prio = PXAD_PRIO_LOWEST,
67 .drcmr = 12,
68};
69
70static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = {
71 .addr = __PREG(PCDR),
72 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
73 .maxburst = 32,
74 .filter_data = &pxa2xx_ac97_pcm_stereo_out_req,
75};
76
77static struct pxad_param pxa2xx_ac97_pcm_aux_mono_out_req = {
78 .prio = PXAD_PRIO_LOWEST,
79 .drcmr = 10,
80};
81static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_out = {
82 .addr = __PREG(MODR),
83 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
84 .maxburst = 16,
85 .filter_data = &pxa2xx_ac97_pcm_aux_mono_out_req,
86};
87
88static struct pxad_param pxa2xx_ac97_pcm_aux_mono_in_req = {
89 .prio = PXAD_PRIO_LOWEST,
90 .drcmr = 9,
91};
92static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = {
93 .addr = __PREG(MODR),
94 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
95 .maxburst = 16,
96 .filter_data = &pxa2xx_ac97_pcm_aux_mono_in_req,
97};
98
99static struct pxad_param pxa2xx_ac97_pcm_aux_mic_mono_req = {
100 .prio = PXAD_PRIO_LOWEST,
101 .drcmr = 8,
102};
103static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = {
104 .addr = __PREG(MCDR),
105 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
106 .maxburst = 16,
107 .filter_data = &pxa2xx_ac97_pcm_aux_mic_mono_req,
108};
109
110static int pxa2xx_ac97_hifi_startup(struct snd_pcm_substream *substream,
111 struct snd_soc_dai *cpu_dai)
112{
113 struct snd_dmaengine_dai_dma_data *dma_data;
114
115 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
116 dma_data = &pxa2xx_ac97_pcm_stereo_out;
117 else
118 dma_data = &pxa2xx_ac97_pcm_stereo_in;
119
120 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
121
122 return 0;
123}
124
125static int pxa2xx_ac97_aux_startup(struct snd_pcm_substream *substream,
126 struct snd_soc_dai *cpu_dai)
127{
128 struct snd_dmaengine_dai_dma_data *dma_data;
129
130 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
131 dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
132 else
133 dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
134
135 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
136
137 return 0;
138}
139
140static int pxa2xx_ac97_mic_startup(struct snd_pcm_substream *substream,
141 struct snd_soc_dai *cpu_dai)
142{
143 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
144 return -ENODEV;
145 else
146 snd_soc_dai_set_dma_data(cpu_dai, substream,
147 &pxa2xx_ac97_pcm_mic_mono_in);
148
149 return 0;
150}
151
152#define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
153 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
154 SNDRV_PCM_RATE_48000)
155
156static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
157 .startup = pxa2xx_ac97_hifi_startup,
158};
159
160static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
161 .startup = pxa2xx_ac97_aux_startup,
162};
163
164static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
165 .startup = pxa2xx_ac97_mic_startup,
166};
167
168
169
170
171
172static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
173{
174 .name = "pxa2xx-ac97",
175 .bus_control = true,
176 .playback = {
177 .stream_name = "AC97 Playback",
178 .channels_min = 2,
179 .channels_max = 2,
180 .rates = PXA2XX_AC97_RATES,
181 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
182 .capture = {
183 .stream_name = "AC97 Capture",
184 .channels_min = 2,
185 .channels_max = 2,
186 .rates = PXA2XX_AC97_RATES,
187 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
188 .ops = &pxa_ac97_hifi_dai_ops,
189},
190{
191 .name = "pxa2xx-ac97-aux",
192 .bus_control = true,
193 .playback = {
194 .stream_name = "AC97 Aux Playback",
195 .channels_min = 1,
196 .channels_max = 1,
197 .rates = PXA2XX_AC97_RATES,
198 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
199 .capture = {
200 .stream_name = "AC97 Aux Capture",
201 .channels_min = 1,
202 .channels_max = 1,
203 .rates = PXA2XX_AC97_RATES,
204 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
205 .ops = &pxa_ac97_aux_dai_ops,
206},
207{
208 .name = "pxa2xx-ac97-mic",
209 .bus_control = true,
210 .capture = {
211 .stream_name = "AC97 Mic Capture",
212 .channels_min = 1,
213 .channels_max = 1,
214 .rates = PXA2XX_AC97_RATES,
215 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
216 .ops = &pxa_ac97_mic_dai_ops,
217},
218};
219
220static const struct snd_soc_component_driver pxa_ac97_component = {
221 .name = "pxa-ac97",
222};
223
224static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
225{
226 int ret;
227
228 if (pdev->id != -1) {
229 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
230 return -ENXIO;
231 }
232
233 ret = pxa2xx_ac97_hw_probe(pdev);
234 if (ret) {
235 dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret);
236 return ret;
237 }
238
239 ret = snd_soc_set_ac97_ops(&pxa2xx_ac97_ops);
240 if (ret != 0)
241 return ret;
242
243
244
245
246
247 return snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
248 pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver));
249}
250
251static int pxa2xx_ac97_dev_remove(struct platform_device *pdev)
252{
253 snd_soc_unregister_component(&pdev->dev);
254 snd_soc_set_ac97_ops(NULL);
255 pxa2xx_ac97_hw_remove(pdev);
256 return 0;
257}
258
259#ifdef CONFIG_PM_SLEEP
260static int pxa2xx_ac97_dev_suspend(struct device *dev)
261{
262 return pxa2xx_ac97_hw_suspend();
263}
264
265static int pxa2xx_ac97_dev_resume(struct device *dev)
266{
267 return pxa2xx_ac97_hw_resume();
268}
269
270static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops,
271 pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume);
272#endif
273
274static struct platform_driver pxa2xx_ac97_driver = {
275 .probe = pxa2xx_ac97_dev_probe,
276 .remove = pxa2xx_ac97_dev_remove,
277 .driver = {
278 .name = "pxa2xx-ac97",
279#ifdef CONFIG_PM_SLEEP
280 .pm = &pxa2xx_ac97_pm_ops,
281#endif
282 },
283};
284
285module_platform_driver(pxa2xx_ac97_driver);
286
287MODULE_AUTHOR("Nicolas Pitre");
288MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
289MODULE_LICENSE("GPL");
290MODULE_ALIAS("platform:pxa2xx-ac97");
291
