1 /*
2 * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip.
3 *
4 * Author: Nicolas Pitre
5 * Created: Dec 02, 2004
6 * Copyright: MontaVista Software Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
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/ac97_codec.h>
19 #include <sound/soc.h>
20 #include <sound/pxa2xx-lib.h>
21
22 #include <mach/hardware.h>
23 #include <mach/pxa-regs.h>
24 #include <mach/regs-ac97.h>
25
26 #include "pxa2xx-pcm.h"
27 #include "pxa2xx-ac97.h"
28
pxa2xx_ac97_warm_reset(struct snd_ac97 * ac97)29 static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
30 {
31 pxa2xx_ac97_try_warm_reset(ac97);
32
33 pxa2xx_ac97_finish_reset(ac97);
34 }
35
pxa2xx_ac97_cold_reset(struct snd_ac97 * ac97)36 static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
37 {
38 pxa2xx_ac97_try_cold_reset(ac97);
39
40 pxa2xx_ac97_finish_reset(ac97);
41 }
42
43 struct snd_ac97_bus_ops soc_ac97_ops = {
44 .read = pxa2xx_ac97_read,
45 .write = pxa2xx_ac97_write,
46 .warm_reset = pxa2xx_ac97_warm_reset,
47 .reset = pxa2xx_ac97_cold_reset,
48 };
49
50 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_out = {
51 .name = "AC97 PCM Stereo out",
52 .dev_addr = __PREG(PCDR),
53 .drcmr = &DRCMR(12),
54 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
55 DCMD_BURST32 | DCMD_WIDTH4,
56 };
57
58 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_in = {
59 .name = "AC97 PCM Stereo in",
60 .dev_addr = __PREG(PCDR),
61 .drcmr = &DRCMR(11),
62 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
63 DCMD_BURST32 | DCMD_WIDTH4,
64 };
65
66 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_out = {
67 .name = "AC97 Aux PCM (Slot 5) Mono out",
68 .dev_addr = __PREG(MODR),
69 .drcmr = &DRCMR(10),
70 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
71 DCMD_BURST16 | DCMD_WIDTH2,
72 };
73
74 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_in = {
75 .name = "AC97 Aux PCM (Slot 5) Mono in",
76 .dev_addr = __PREG(MODR),
77 .drcmr = &DRCMR(9),
78 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
79 DCMD_BURST16 | DCMD_WIDTH2,
80 };
81
82 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_mic_mono_in = {
83 .name = "AC97 Mic PCM (Slot 6) Mono in",
84 .dev_addr = __PREG(MCDR),
85 .drcmr = &DRCMR(8),
86 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
87 DCMD_BURST16 | DCMD_WIDTH2,
88 };
89
90 #ifdef CONFIG_PM
pxa2xx_ac97_suspend(struct snd_soc_dai * dai)91 static int pxa2xx_ac97_suspend(struct snd_soc_dai *dai)
92 {
93 return pxa2xx_ac97_hw_suspend();
94 }
95
pxa2xx_ac97_resume(struct snd_soc_dai * dai)96 static int pxa2xx_ac97_resume(struct snd_soc_dai *dai)
97 {
98 return pxa2xx_ac97_hw_resume();
99 }
100
101 #else
102 #define pxa2xx_ac97_suspend NULL
103 #define pxa2xx_ac97_resume NULL
104 #endif
105
pxa2xx_ac97_probe(struct platform_device * pdev,struct snd_soc_dai * dai)106 static int pxa2xx_ac97_probe(struct platform_device *pdev,
107 struct snd_soc_dai *dai)
108 {
109 return pxa2xx_ac97_hw_probe(pdev);
110 }
111
pxa2xx_ac97_remove(struct platform_device * pdev,struct snd_soc_dai * dai)112 static void pxa2xx_ac97_remove(struct platform_device *pdev,
113 struct snd_soc_dai *dai)
114 {
115 pxa2xx_ac97_hw_remove(pdev);
116 }
117
pxa2xx_ac97_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)118 static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,
119 struct snd_pcm_hw_params *params,
120 struct snd_soc_dai *dai)
121 {
122 struct snd_soc_pcm_runtime *rtd = substream->private_data;
123 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
124
125 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
126 cpu_dai->dma_data = &pxa2xx_ac97_pcm_stereo_out;
127 else
128 cpu_dai->dma_data = &pxa2xx_ac97_pcm_stereo_in;
129
130 return 0;
131 }
132
pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)133 static int pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream *substream,
134 struct snd_pcm_hw_params *params,
135 struct snd_soc_dai *dai)
136 {
137 struct snd_soc_pcm_runtime *rtd = substream->private_data;
138 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
139
140 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
141 cpu_dai->dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
142 else
143 cpu_dai->dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
144
145 return 0;
146 }
147
pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)148 static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream,
149 struct snd_pcm_hw_params *params,
150 struct snd_soc_dai *dai)
151 {
152 struct snd_soc_pcm_runtime *rtd = substream->private_data;
153 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
154
155 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
156 return -ENODEV;
157 else
158 cpu_dai->dma_data = &pxa2xx_ac97_pcm_mic_mono_in;
159
160 return 0;
161 }
162
163 #define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
164 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
165 SNDRV_PCM_RATE_48000)
166
167 /*
168 * There is only 1 physical AC97 interface for pxa2xx, but it
169 * has extra fifo's that can be used for aux DACs and ADCs.
170 */
171 struct snd_soc_dai pxa_ac97_dai[] = {
172 {
173 .name = "pxa2xx-ac97",
174 .id = 0,
175 .ac97_control = 1,
176 .probe = pxa2xx_ac97_probe,
177 .remove = pxa2xx_ac97_remove,
178 .suspend = pxa2xx_ac97_suspend,
179 .resume = pxa2xx_ac97_resume,
180 .playback = {
181 .stream_name = "AC97 Playback",
182 .channels_min = 2,
183 .channels_max = 2,
184 .rates = PXA2XX_AC97_RATES,
185 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
186 .capture = {
187 .stream_name = "AC97 Capture",
188 .channels_min = 2,
189 .channels_max = 2,
190 .rates = PXA2XX_AC97_RATES,
191 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
192 .ops = {
193 .hw_params = pxa2xx_ac97_hw_params,},
194 },
195 {
196 .name = "pxa2xx-ac97-aux",
197 .id = 1,
198 .ac97_control = 1,
199 .playback = {
200 .stream_name = "AC97 Aux Playback",
201 .channels_min = 1,
202 .channels_max = 1,
203 .rates = PXA2XX_AC97_RATES,
204 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
205 .capture = {
206 .stream_name = "AC97 Aux Capture",
207 .channels_min = 1,
208 .channels_max = 1,
209 .rates = PXA2XX_AC97_RATES,
210 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
211 .ops = {
212 .hw_params = pxa2xx_ac97_hw_aux_params,},
213 },
214 {
215 .name = "pxa2xx-ac97-mic",
216 .id = 2,
217 .ac97_control = 1,
218 .capture = {
219 .stream_name = "AC97 Mic Capture",
220 .channels_min = 1,
221 .channels_max = 1,
222 .rates = PXA2XX_AC97_RATES,
223 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
224 .ops = {
225 .hw_params = pxa2xx_ac97_hw_mic_params,},
226 },
227 };
228
229 EXPORT_SYMBOL_GPL(pxa_ac97_dai);
230 EXPORT_SYMBOL_GPL(soc_ac97_ops);
231
pxa_ac97_init(void)232 static int __init pxa_ac97_init(void)
233 {
234 return snd_soc_register_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai));
235 }
236 module_init(pxa_ac97_init);
237
pxa_ac97_exit(void)238 static void __exit pxa_ac97_exit(void)
239 {
240 snd_soc_unregister_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai));
241 }
242 module_exit(pxa_ac97_exit);
243
244 MODULE_AUTHOR("Nicolas Pitre");
245 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
246 MODULE_LICENSE("GPL");
247