1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip.
4 *
5 * Author: Nicolas Pitre
6 * Created: Dec 02, 2004
7 * Copyright: MontaVista Software Inc.
8 */
9
10 #include <linux/init.h>
11 #include <linux/io.h>
12 #include <linux/module.h>
13 #include <linux/platform_device.h>
14 #include <linux/dmaengine.h>
15 #include <linux/dma/pxa-dma.h>
16
17 #include <sound/ac97/controller.h>
18 #include <sound/core.h>
19 #include <sound/ac97_codec.h>
20 #include <sound/soc.h>
21 #include <sound/pxa2xx-lib.h>
22 #include <sound/dmaengine_pcm.h>
23
24 #include <mach/hardware.h>
25 #include <mach/regs-ac97.h>
26 #include <mach/audio.h>
27
pxa2xx_ac97_warm_reset(struct ac97_controller * adrv)28 static void pxa2xx_ac97_warm_reset(struct ac97_controller *adrv)
29 {
30 pxa2xx_ac97_try_warm_reset();
31
32 pxa2xx_ac97_finish_reset();
33 }
34
pxa2xx_ac97_cold_reset(struct ac97_controller * adrv)35 static void pxa2xx_ac97_cold_reset(struct ac97_controller *adrv)
36 {
37 pxa2xx_ac97_try_cold_reset();
38
39 pxa2xx_ac97_finish_reset();
40 }
41
pxa2xx_ac97_read_actrl(struct ac97_controller * adrv,int slot,unsigned short reg)42 static int pxa2xx_ac97_read_actrl(struct ac97_controller *adrv, int slot,
43 unsigned short reg)
44 {
45 return pxa2xx_ac97_read(slot, reg);
46 }
47
pxa2xx_ac97_write_actrl(struct ac97_controller * adrv,int slot,unsigned short reg,unsigned short val)48 static int pxa2xx_ac97_write_actrl(struct ac97_controller *adrv, int slot,
49 unsigned short reg, unsigned short val)
50 {
51 return pxa2xx_ac97_write(slot, reg, val);
52 }
53
54 static struct ac97_controller_ops pxa2xx_ac97_ops = {
55 .read = pxa2xx_ac97_read_actrl,
56 .write = pxa2xx_ac97_write_actrl,
57 .warm_reset = pxa2xx_ac97_warm_reset,
58 .reset = pxa2xx_ac97_cold_reset,
59 };
60
61 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
62 .addr = __PREG(PCDR),
63 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
64 .chan_name = "pcm_pcm_stereo_in",
65 .maxburst = 32,
66 };
67
68 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = {
69 .addr = __PREG(PCDR),
70 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
71 .chan_name = "pcm_pcm_stereo_out",
72 .maxburst = 32,
73 };
74
75 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_out = {
76 .addr = __PREG(MODR),
77 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
78 .chan_name = "pcm_aux_mono_out",
79 .maxburst = 16,
80 };
81
82 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = {
83 .addr = __PREG(MODR),
84 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
85 .chan_name = "pcm_aux_mono_in",
86 .maxburst = 16,
87 };
88
89 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = {
90 .addr = __PREG(MCDR),
91 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
92 .chan_name = "pcm_aux_mic_mono",
93 .maxburst = 16,
94 };
95
pxa2xx_ac97_hifi_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * cpu_dai)96 static int pxa2xx_ac97_hifi_startup(struct snd_pcm_substream *substream,
97 struct snd_soc_dai *cpu_dai)
98 {
99 struct snd_dmaengine_dai_dma_data *dma_data;
100
101 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
102 dma_data = &pxa2xx_ac97_pcm_stereo_out;
103 else
104 dma_data = &pxa2xx_ac97_pcm_stereo_in;
105
106 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
107
108 return 0;
109 }
110
pxa2xx_ac97_aux_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * cpu_dai)111 static int pxa2xx_ac97_aux_startup(struct snd_pcm_substream *substream,
112 struct snd_soc_dai *cpu_dai)
113 {
114 struct snd_dmaengine_dai_dma_data *dma_data;
115
116 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
117 dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
118 else
119 dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
120
121 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
122
123 return 0;
124 }
125
pxa2xx_ac97_mic_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * cpu_dai)126 static int pxa2xx_ac97_mic_startup(struct snd_pcm_substream *substream,
127 struct snd_soc_dai *cpu_dai)
128 {
129 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
130 return -ENODEV;
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
141 static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
142 .startup = pxa2xx_ac97_hifi_startup,
143 };
144
145 static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
146 .startup = pxa2xx_ac97_aux_startup,
147 };
148
149 static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
150 .startup = pxa2xx_ac97_mic_startup,
151 };
152
153 /*
154 * There is only 1 physical AC97 interface for pxa2xx, but it
155 * has extra fifo's that can be used for aux DACs and ADCs.
156 */
157 static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
158 {
159 .name = "pxa2xx-ac97",
160 .playback = {
161 .stream_name = "AC97 Playback",
162 .channels_min = 2,
163 .channels_max = 2,
164 .rates = PXA2XX_AC97_RATES,
165 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
166 .capture = {
167 .stream_name = "AC97 Capture",
168 .channels_min = 2,
169 .channels_max = 2,
170 .rates = PXA2XX_AC97_RATES,
171 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
172 .ops = &pxa_ac97_hifi_dai_ops,
173 },
174 {
175 .name = "pxa2xx-ac97-aux",
176 .playback = {
177 .stream_name = "AC97 Aux Playback",
178 .channels_min = 1,
179 .channels_max = 1,
180 .rates = PXA2XX_AC97_RATES,
181 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
182 .capture = {
183 .stream_name = "AC97 Aux Capture",
184 .channels_min = 1,
185 .channels_max = 1,
186 .rates = PXA2XX_AC97_RATES,
187 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
188 .ops = &pxa_ac97_aux_dai_ops,
189 },
190 {
191 .name = "pxa2xx-ac97-mic",
192 .capture = {
193 .stream_name = "AC97 Mic Capture",
194 .channels_min = 1,
195 .channels_max = 1,
196 .rates = PXA2XX_AC97_RATES,
197 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
198 .ops = &pxa_ac97_mic_dai_ops,
199 },
200 };
201
202 static const struct snd_soc_component_driver pxa_ac97_component = {
203 .name = "pxa-ac97",
204 .pcm_construct = pxa2xx_soc_pcm_new,
205 .pcm_destruct = pxa2xx_soc_pcm_free,
206 .open = pxa2xx_soc_pcm_open,
207 .close = pxa2xx_soc_pcm_close,
208 .hw_params = pxa2xx_soc_pcm_hw_params,
209 .hw_free = pxa2xx_soc_pcm_hw_free,
210 .prepare = pxa2xx_soc_pcm_prepare,
211 .trigger = pxa2xx_soc_pcm_trigger,
212 .pointer = pxa2xx_soc_pcm_pointer,
213 .mmap = pxa2xx_soc_pcm_mmap,
214 };
215
216 #ifdef CONFIG_OF
217 static const struct of_device_id pxa2xx_ac97_dt_ids[] = {
218 { .compatible = "marvell,pxa250-ac97", },
219 { .compatible = "marvell,pxa270-ac97", },
220 { .compatible = "marvell,pxa300-ac97", },
221 { }
222 };
223 MODULE_DEVICE_TABLE(of, pxa2xx_ac97_dt_ids);
224
225 #endif
226
pxa2xx_ac97_dev_probe(struct platform_device * pdev)227 static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
228 {
229 int ret;
230 struct ac97_controller *ctrl;
231 pxa2xx_audio_ops_t *pdata = pdev->dev.platform_data;
232 void **codecs_pdata;
233
234 if (pdev->id != -1) {
235 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
236 return -ENXIO;
237 }
238
239 ret = pxa2xx_ac97_hw_probe(pdev);
240 if (ret) {
241 dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret);
242 return ret;
243 }
244
245 codecs_pdata = pdata ? pdata->codec_pdata : NULL;
246 ctrl = snd_ac97_controller_register(&pxa2xx_ac97_ops, &pdev->dev,
247 AC97_SLOTS_AVAILABLE_ALL,
248 codecs_pdata);
249 if (IS_ERR(ctrl))
250 return PTR_ERR(ctrl);
251
252 platform_set_drvdata(pdev, ctrl);
253 /* Punt most of the init to the SoC probe; we may need the machine
254 * driver to do interesting things with the clocking to get us up
255 * and running.
256 */
257 return devm_snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
258 pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver));
259 }
260
pxa2xx_ac97_dev_remove(struct platform_device * pdev)261 static int pxa2xx_ac97_dev_remove(struct platform_device *pdev)
262 {
263 struct ac97_controller *ctrl = platform_get_drvdata(pdev);
264
265 snd_ac97_controller_unregister(ctrl);
266 pxa2xx_ac97_hw_remove(pdev);
267 return 0;
268 }
269
270 #ifdef CONFIG_PM_SLEEP
pxa2xx_ac97_dev_suspend(struct device * dev)271 static int pxa2xx_ac97_dev_suspend(struct device *dev)
272 {
273 return pxa2xx_ac97_hw_suspend();
274 }
275
pxa2xx_ac97_dev_resume(struct device * dev)276 static int pxa2xx_ac97_dev_resume(struct device *dev)
277 {
278 return pxa2xx_ac97_hw_resume();
279 }
280
281 static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops,
282 pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume);
283 #endif
284
285 static struct platform_driver pxa2xx_ac97_driver = {
286 .probe = pxa2xx_ac97_dev_probe,
287 .remove = pxa2xx_ac97_dev_remove,
288 .driver = {
289 .name = "pxa2xx-ac97",
290 #ifdef CONFIG_PM_SLEEP
291 .pm = &pxa2xx_ac97_pm_ops,
292 #endif
293 .of_match_table = of_match_ptr(pxa2xx_ac97_dt_ids),
294 },
295 };
296
297 module_platform_driver(pxa2xx_ac97_driver);
298
299 MODULE_AUTHOR("Nicolas Pitre");
300 MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
301 MODULE_LICENSE("GPL");
302 MODULE_ALIAS("platform:pxa2xx-ac97");
303