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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
19#include <sound/core.h>
20#include <sound/ac97_codec.h>
21#include <sound/soc.h>
22#include <sound/pxa2xx-lib.h>
23#include <sound/dmaengine_pcm.h>
24
25#include <mach/hardware.h>
26#include <mach/regs-ac97.h>
27#include <mach/audio.h>
28
29#include "pxa2xx-ac97.h"
30
31static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
32{
33 pxa2xx_ac97_try_warm_reset(ac97);
34
35 pxa2xx_ac97_finish_reset(ac97);
36}
37
38static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
39{
40 pxa2xx_ac97_try_cold_reset(ac97);
41
42 pxa2xx_ac97_finish_reset(ac97);
43}
44
45static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
46 .read = pxa2xx_ac97_read,
47 .write = pxa2xx_ac97_write,
48 .warm_reset = pxa2xx_ac97_warm_reset,
49 .reset = pxa2xx_ac97_cold_reset,
50};
51
52static unsigned long pxa2xx_ac97_pcm_stereo_in_req = 12;
53static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
54 .addr = __PREG(PCDR),
55 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
56 .maxburst = 32,
57 .filter_data = &pxa2xx_ac97_pcm_stereo_in_req,
58};
59
60static unsigned long pxa2xx_ac97_pcm_stereo_out_req = 11;
61static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = {
62 .addr = __PREG(PCDR),
63 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
64 .maxburst = 32,
65 .filter_data = &pxa2xx_ac97_pcm_stereo_out_req,
66};
67
68static unsigned long pxa2xx_ac97_pcm_aux_mono_out_req = 10;
69static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_out = {
70 .addr = __PREG(MODR),
71 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
72 .maxburst = 16,
73 .filter_data = &pxa2xx_ac97_pcm_aux_mono_out_req,
74};
75
76static unsigned long pxa2xx_ac97_pcm_aux_mono_in_req = 9;
77static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = {
78 .addr = __PREG(MODR),
79 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
80 .maxburst = 16,
81 .filter_data = &pxa2xx_ac97_pcm_aux_mono_in_req,
82};
83
84static unsigned long pxa2xx_ac97_pcm_aux_mic_mono_req = 8;
85static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = {
86 .addr = __PREG(MCDR),
87 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
88 .maxburst = 16,
89 .filter_data = &pxa2xx_ac97_pcm_aux_mic_mono_req,
90};
91
92#ifdef CONFIG_PM
93static int pxa2xx_ac97_suspend(struct snd_soc_dai *dai)
94{
95 return pxa2xx_ac97_hw_suspend();
96}
97
98static int pxa2xx_ac97_resume(struct snd_soc_dai *dai)
99{
100 return pxa2xx_ac97_hw_resume();
101}
102
103#else
104#define pxa2xx_ac97_suspend NULL
105#define pxa2xx_ac97_resume NULL
106#endif
107
108static int pxa2xx_ac97_probe(struct snd_soc_dai *dai)
109{
110 return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev));
111}
112
113static int pxa2xx_ac97_remove(struct snd_soc_dai *dai)
114{
115 pxa2xx_ac97_hw_remove(to_platform_device(dai->dev));
116 return 0;
117}
118
119static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,
120 struct snd_pcm_hw_params *params,
121 struct snd_soc_dai *cpu_dai)
122{
123 struct snd_dmaengine_dai_dma_data *dma_data;
124
125 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
126 dma_data = &pxa2xx_ac97_pcm_stereo_out;
127 else
128 dma_data = &pxa2xx_ac97_pcm_stereo_in;
129
130 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
131
132 return 0;
133}
134
135static int pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream *substream,
136 struct snd_pcm_hw_params *params,
137 struct snd_soc_dai *cpu_dai)
138{
139 struct snd_dmaengine_dai_dma_data *dma_data;
140
141 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
142 dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
143 else
144 dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
145
146 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
147
148 return 0;
149}
150
151static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream,
152 struct snd_pcm_hw_params *params,
153 struct snd_soc_dai *cpu_dai)
154{
155 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
156 return -ENODEV;
157 else
158 snd_soc_dai_set_dma_data(cpu_dai, substream,
159 &pxa2xx_ac97_pcm_mic_mono_in);
160
161 return 0;
162}
163
164#define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
165 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
166 SNDRV_PCM_RATE_48000)
167
168static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
169 .hw_params = pxa2xx_ac97_hw_params,
170};
171
172static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
173 .hw_params = pxa2xx_ac97_hw_aux_params,
174};
175
176static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
177 .hw_params = pxa2xx_ac97_hw_mic_params,
178};
179
180
181
182
183
184static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
185{
186 .name = "pxa2xx-ac97",
187 .ac97_control = 1,
188 .probe = pxa2xx_ac97_probe,
189 .remove = pxa2xx_ac97_remove,
190 .suspend = pxa2xx_ac97_suspend,
191 .resume = pxa2xx_ac97_resume,
192 .playback = {
193 .stream_name = "AC97 Playback",
194 .channels_min = 2,
195 .channels_max = 2,
196 .rates = PXA2XX_AC97_RATES,
197 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
198 .capture = {
199 .stream_name = "AC97 Capture",
200 .channels_min = 2,
201 .channels_max = 2,
202 .rates = PXA2XX_AC97_RATES,
203 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
204 .ops = &pxa_ac97_hifi_dai_ops,
205},
206{
207 .name = "pxa2xx-ac97-aux",
208 .ac97_control = 1,
209 .playback = {
210 .stream_name = "AC97 Aux Playback",
211 .channels_min = 1,
212 .channels_max = 1,
213 .rates = PXA2XX_AC97_RATES,
214 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
215 .capture = {
216 .stream_name = "AC97 Aux Capture",
217 .channels_min = 1,
218 .channels_max = 1,
219 .rates = PXA2XX_AC97_RATES,
220 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
221 .ops = &pxa_ac97_aux_dai_ops,
222},
223{
224 .name = "pxa2xx-ac97-mic",
225 .ac97_control = 1,
226 .capture = {
227 .stream_name = "AC97 Mic Capture",
228 .channels_min = 1,
229 .channels_max = 1,
230 .rates = PXA2XX_AC97_RATES,
231 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
232 .ops = &pxa_ac97_mic_dai_ops,
233},
234};
235
236static const struct snd_soc_component_driver pxa_ac97_component = {
237 .name = "pxa-ac97",
238};
239
240static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
241{
242 int ret;
243
244 if (pdev->id != -1) {
245 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
246 return -ENXIO;
247 }
248
249 ret = snd_soc_set_ac97_ops(&pxa2xx_ac97_ops);
250 if (ret != 0)
251 return ret;
252
253
254
255
256
257 return snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
258 pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver));
259}
260
261static int pxa2xx_ac97_dev_remove(struct platform_device *pdev)
262{
263 snd_soc_unregister_component(&pdev->dev);
264 snd_soc_set_ac97_ops(NULL);
265 return 0;
266}
267
268static struct platform_driver pxa2xx_ac97_driver = {
269 .probe = pxa2xx_ac97_dev_probe,
270 .remove = pxa2xx_ac97_dev_remove,
271 .driver = {
272 .name = "pxa2xx-ac97",
273 .owner = THIS_MODULE,
274 },
275};
276
277module_platform_driver(pxa2xx_ac97_driver);
278
279MODULE_AUTHOR("Nicolas Pitre");
280MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
281MODULE_LICENSE("GPL");
282
