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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
92static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,
93 struct snd_pcm_hw_params *params,
94 struct snd_soc_dai *cpu_dai)
95{
96 struct snd_dmaengine_dai_dma_data *dma_data;
97
98 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
99 dma_data = &pxa2xx_ac97_pcm_stereo_out;
100 else
101 dma_data = &pxa2xx_ac97_pcm_stereo_in;
102
103 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
104
105 return 0;
106}
107
108static int pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream *substream,
109 struct snd_pcm_hw_params *params,
110 struct snd_soc_dai *cpu_dai)
111{
112 struct snd_dmaengine_dai_dma_data *dma_data;
113
114 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
115 dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
116 else
117 dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
118
119 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
120
121 return 0;
122}
123
124static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream,
125 struct snd_pcm_hw_params *params,
126 struct snd_soc_dai *cpu_dai)
127{
128 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
129 return -ENODEV;
130 else
131 snd_soc_dai_set_dma_data(cpu_dai, substream,
132 &pxa2xx_ac97_pcm_mic_mono_in);
133
134 return 0;
135}
136
137#define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
138 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
139 SNDRV_PCM_RATE_48000)
140
141static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
142 .hw_params = pxa2xx_ac97_hw_params,
143};
144
145static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
146 .hw_params = pxa2xx_ac97_hw_aux_params,
147};
148
149static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
150 .hw_params = pxa2xx_ac97_hw_mic_params,
151};
152
153
154
155
156
157static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
158{
159 .name = "pxa2xx-ac97",
160 .bus_control = true,
161 .playback = {
162 .stream_name = "AC97 Playback",
163 .channels_min = 2,
164 .channels_max = 2,
165 .rates = PXA2XX_AC97_RATES,
166 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
167 .capture = {
168 .stream_name = "AC97 Capture",
169 .channels_min = 2,
170 .channels_max = 2,
171 .rates = PXA2XX_AC97_RATES,
172 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
173 .ops = &pxa_ac97_hifi_dai_ops,
174},
175{
176 .name = "pxa2xx-ac97-aux",
177 .bus_control = true,
178 .playback = {
179 .stream_name = "AC97 Aux Playback",
180 .channels_min = 1,
181 .channels_max = 1,
182 .rates = PXA2XX_AC97_RATES,
183 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
184 .capture = {
185 .stream_name = "AC97 Aux Capture",
186 .channels_min = 1,
187 .channels_max = 1,
188 .rates = PXA2XX_AC97_RATES,
189 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
190 .ops = &pxa_ac97_aux_dai_ops,
191},
192{
193 .name = "pxa2xx-ac97-mic",
194 .bus_control = true,
195 .capture = {
196 .stream_name = "AC97 Mic Capture",
197 .channels_min = 1,
198 .channels_max = 1,
199 .rates = PXA2XX_AC97_RATES,
200 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
201 .ops = &pxa_ac97_mic_dai_ops,
202},
203};
204
205static const struct snd_soc_component_driver pxa_ac97_component = {
206 .name = "pxa-ac97",
207};
208
209static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
210{
211 int ret;
212
213 if (pdev->id != -1) {
214 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
215 return -ENXIO;
216 }
217
218 ret = pxa2xx_ac97_hw_probe(pdev);
219 if (ret) {
220 dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret);
221 return ret;
222 }
223
224 ret = snd_soc_set_ac97_ops(&pxa2xx_ac97_ops);
225 if (ret != 0)
226 return ret;
227
228
229
230
231
232 return snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
233 pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver));
234}
235
236static int pxa2xx_ac97_dev_remove(struct platform_device *pdev)
237{
238 snd_soc_unregister_component(&pdev->dev);
239 snd_soc_set_ac97_ops(NULL);
240 pxa2xx_ac97_hw_remove(pdev);
241 return 0;
242}
243
244#ifdef CONFIG_PM_SLEEP
245static int pxa2xx_ac97_dev_suspend(struct device *dev)
246{
247 return pxa2xx_ac97_hw_suspend();
248}
249
250static int pxa2xx_ac97_dev_resume(struct device *dev)
251{
252 return pxa2xx_ac97_hw_resume();
253}
254
255static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops,
256 pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume);
257#endif
258
259static struct platform_driver pxa2xx_ac97_driver = {
260 .probe = pxa2xx_ac97_dev_probe,
261 .remove = pxa2xx_ac97_dev_remove,
262 .driver = {
263 .name = "pxa2xx-ac97",
264#ifdef CONFIG_PM_SLEEP
265 .pm = &pxa2xx_ac97_pm_ops,
266#endif
267 },
268};
269
270module_platform_driver(pxa2xx_ac97_driver);
271
272MODULE_AUTHOR("Nicolas Pitre");
273MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
274MODULE_LICENSE("GPL");
275
