2 * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip.
4 * Author: Nicolas Pitre
5 * Created: Dec 02, 2004
6 * Copyright: MontaVista Software Inc.
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.
13 #include <linux/init.h>
15 #include <linux/module.h>
16 #include <linux/platform_device.h>
18 #include <sound/core.h>
19 #include <sound/ac97_codec.h>
20 #include <sound/soc.h>
21 #include <sound/pxa2xx-lib.h>
23 #include <mach/hardware.h>
24 #include <mach/regs-ac97.h>
26 #include <mach/audio.h>
28 #include "pxa2xx-ac97.h"
30 static void pxa2xx_ac97_warm_reset(struct snd_ac97
*ac97
)
32 pxa2xx_ac97_try_warm_reset(ac97
);
34 pxa2xx_ac97_finish_reset(ac97
);
37 static void pxa2xx_ac97_cold_reset(struct snd_ac97
*ac97
)
39 pxa2xx_ac97_try_cold_reset(ac97
);
41 pxa2xx_ac97_finish_reset(ac97
);
44 struct snd_ac97_bus_ops soc_ac97_ops
= {
45 .read
= pxa2xx_ac97_read
,
46 .write
= pxa2xx_ac97_write
,
47 .warm_reset
= pxa2xx_ac97_warm_reset
,
48 .reset
= pxa2xx_ac97_cold_reset
,
50 EXPORT_SYMBOL_GPL(soc_ac97_ops
);
52 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_out
= {
53 .name
= "AC97 PCM Stereo out",
54 .dev_addr
= __PREG(PCDR
),
56 .dcmd
= DCMD_INCSRCADDR
| DCMD_FLOWTRG
|
57 DCMD_BURST32
| DCMD_WIDTH4
,
60 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_in
= {
61 .name
= "AC97 PCM Stereo in",
62 .dev_addr
= __PREG(PCDR
),
64 .dcmd
= DCMD_INCTRGADDR
| DCMD_FLOWSRC
|
65 DCMD_BURST32
| DCMD_WIDTH4
,
68 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_out
= {
69 .name
= "AC97 Aux PCM (Slot 5) Mono out",
70 .dev_addr
= __PREG(MODR
),
72 .dcmd
= DCMD_INCSRCADDR
| DCMD_FLOWTRG
|
73 DCMD_BURST16
| DCMD_WIDTH2
,
76 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_in
= {
77 .name
= "AC97 Aux PCM (Slot 5) Mono in",
78 .dev_addr
= __PREG(MODR
),
80 .dcmd
= DCMD_INCTRGADDR
| DCMD_FLOWSRC
|
81 DCMD_BURST16
| DCMD_WIDTH2
,
84 static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_mic_mono_in
= {
85 .name
= "AC97 Mic PCM (Slot 6) Mono in",
86 .dev_addr
= __PREG(MCDR
),
88 .dcmd
= DCMD_INCTRGADDR
| DCMD_FLOWSRC
|
89 DCMD_BURST16
| DCMD_WIDTH2
,
93 static int pxa2xx_ac97_suspend(struct snd_soc_dai
*dai
)
95 return pxa2xx_ac97_hw_suspend();
98 static int pxa2xx_ac97_resume(struct snd_soc_dai
*dai
)
100 return pxa2xx_ac97_hw_resume();
104 #define pxa2xx_ac97_suspend NULL
105 #define pxa2xx_ac97_resume NULL
108 static int pxa2xx_ac97_probe(struct snd_soc_dai
*dai
)
110 return pxa2xx_ac97_hw_probe(to_platform_device(dai
->dev
));
113 static int pxa2xx_ac97_remove(struct snd_soc_dai
*dai
)
115 pxa2xx_ac97_hw_remove(to_platform_device(dai
->dev
));
119 static int pxa2xx_ac97_hw_params(struct snd_pcm_substream
*substream
,
120 struct snd_pcm_hw_params
*params
,
121 struct snd_soc_dai
*cpu_dai
)
123 struct pxa2xx_pcm_dma_params
*dma_data
;
125 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
126 dma_data
= &pxa2xx_ac97_pcm_stereo_out
;
128 dma_data
= &pxa2xx_ac97_pcm_stereo_in
;
130 snd_soc_dai_set_dma_data(cpu_dai
, substream
, dma_data
);
135 static 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
)
139 struct pxa2xx_pcm_dma_params
*dma_data
;
141 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
142 dma_data
= &pxa2xx_ac97_pcm_aux_mono_out
;
144 dma_data
= &pxa2xx_ac97_pcm_aux_mono_in
;
146 snd_soc_dai_set_dma_data(cpu_dai
, substream
, dma_data
);
151 static 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
)
155 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
158 snd_soc_dai_set_dma_data(cpu_dai
, substream
,
159 &pxa2xx_ac97_pcm_mic_mono_in
);
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)
168 static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops
= {
169 .hw_params
= pxa2xx_ac97_hw_params
,
172 static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops
= {
173 .hw_params
= pxa2xx_ac97_hw_aux_params
,
176 static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops
= {
177 .hw_params
= pxa2xx_ac97_hw_mic_params
,
181 * There is only 1 physical AC97 interface for pxa2xx, but it
182 * has extra fifo's that can be used for aux DACs and ADCs.
184 static struct snd_soc_dai_driver pxa_ac97_dai_driver
[] = {
186 .name
= "pxa2xx-ac97",
188 .probe
= pxa2xx_ac97_probe
,
189 .remove
= pxa2xx_ac97_remove
,
190 .suspend
= pxa2xx_ac97_suspend
,
191 .resume
= pxa2xx_ac97_resume
,
193 .stream_name
= "AC97 Playback",
196 .rates
= PXA2XX_AC97_RATES
,
197 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,},
199 .stream_name
= "AC97 Capture",
202 .rates
= PXA2XX_AC97_RATES
,
203 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,},
204 .ops
= &pxa_ac97_hifi_dai_ops
,
207 .name
= "pxa2xx-ac97-aux",
210 .stream_name
= "AC97 Aux Playback",
213 .rates
= PXA2XX_AC97_RATES
,
214 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,},
216 .stream_name
= "AC97 Aux Capture",
219 .rates
= PXA2XX_AC97_RATES
,
220 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,},
221 .ops
= &pxa_ac97_aux_dai_ops
,
224 .name
= "pxa2xx-ac97-mic",
227 .stream_name
= "AC97 Mic Capture",
230 .rates
= PXA2XX_AC97_RATES
,
231 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,},
232 .ops
= &pxa_ac97_mic_dai_ops
,
236 static const struct snd_soc_component_driver pxa_ac97_component
= {
240 static int pxa2xx_ac97_dev_probe(struct platform_device
*pdev
)
242 if (pdev
->id
!= -1) {
243 dev_err(&pdev
->dev
, "PXA2xx has only one AC97 port.\n");
247 /* Punt most of the init to the SoC probe; we may need the machine
248 * driver to do interesting things with the clocking to get us up
251 return snd_soc_register_component(&pdev
->dev
, &pxa_ac97_component
,
252 pxa_ac97_dai_driver
, ARRAY_SIZE(pxa_ac97_dai_driver
));
255 static int pxa2xx_ac97_dev_remove(struct platform_device
*pdev
)
257 snd_soc_unregister_component(&pdev
->dev
);
261 static struct platform_driver pxa2xx_ac97_driver
= {
262 .probe
= pxa2xx_ac97_dev_probe
,
263 .remove
= pxa2xx_ac97_dev_remove
,
265 .name
= "pxa2xx-ac97",
266 .owner
= THIS_MODULE
,
270 module_platform_driver(pxa2xx_ac97_driver
);
272 MODULE_AUTHOR("Nicolas Pitre");
273 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
274 MODULE_LICENSE("GPL");