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 <linux/platform_data/asoc-pxa.h>
25
26 #define PCDR 0x0040 /* PCM FIFO Data Register */
27 #define MODR 0x0140 /* Modem FIFO Data Register */
28 #define MCDR 0x0060 /* Mic-in FIFO Data Register */
29
30 static void pxa2xx_ac97_warm_reset(struct ac97_controller *adrv)
31 {
32 pxa2xx_ac97_try_warm_reset();
33
34 pxa2xx_ac97_finish_reset();
35 }
36
37 static void pxa2xx_ac97_cold_reset(struct ac97_controller *adrv)
38 {
39 pxa2xx_ac97_try_cold_reset();
40
41 pxa2xx_ac97_finish_reset();
42 }
43
44 static int pxa2xx_ac97_read_actrl(struct ac97_controller *adrv, int slot,
45 unsigned short reg)
46 {
47 return pxa2xx_ac97_read(slot, reg);
48 }
49
50 static int pxa2xx_ac97_write_actrl(struct ac97_controller *adrv, int slot,
51 unsigned short reg, unsigned short val)
52 {
53 return pxa2xx_ac97_write(slot, reg, val);
54 }
55
56 static struct ac97_controller_ops pxa2xx_ac97_ops = {
57 .read = pxa2xx_ac97_read_actrl,
58 .write = pxa2xx_ac97_write_actrl,
59 .warm_reset = pxa2xx_ac97_warm_reset,
60 .reset = pxa2xx_ac97_cold_reset,
61 };
62
63 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
64 .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
65 .chan_name = "pcm_pcm_stereo_in",
66 .maxburst = 32,
67 };
68
69 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = {
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_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
77 .chan_name = "pcm_aux_mono_out",
78 .maxburst = 16,
79 };
80
81 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = {
82 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
83 .chan_name = "pcm_aux_mono_in",
84 .maxburst = 16,
85 };
86
87 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = {
88 .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
89 .chan_name = "pcm_aux_mic_mono",
90 .maxburst = 16,
91 };
92
93 static int pxa2xx_ac97_hifi_startup(struct snd_pcm_substream *substream,
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
108 static int pxa2xx_ac97_aux_startup(struct snd_pcm_substream *substream,
109 struct snd_soc_dai *cpu_dai)
110 {
111 struct snd_dmaengine_dai_dma_data *dma_data;
112
113 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
114 dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
115 else
116 dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
117
118 snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
119
120 return 0;
121 }
122
123 static int pxa2xx_ac97_mic_startup(struct snd_pcm_substream *substream,
124 struct snd_soc_dai *cpu_dai)
125 {
126 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
127 return -ENODEV;
128 snd_soc_dai_set_dma_data(cpu_dai, substream,
129 &pxa2xx_ac97_pcm_mic_mono_in);
130
131 return 0;
132 }
133
134 #define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
135 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
136 SNDRV_PCM_RATE_48000)
137
138 static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
139 .startup = pxa2xx_ac97_hifi_startup,
140 };
141
142 static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
143 .startup = pxa2xx_ac97_aux_startup,
144 };
145
146 static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
147 .startup = pxa2xx_ac97_mic_startup,
148 };
149
150 /*
151 * There is only 1 physical AC97 interface for pxa2xx, but it
152 * has extra fifo's that can be used for aux DACs and ADCs.
153 */
154 static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
155 {
156 .name = "pxa2xx-ac97",
157 .playback = {
158 .stream_name = "AC97 Playback",
159 .channels_min = 2,
160 .channels_max = 2,
161 .rates = PXA2XX_AC97_RATES,
162 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
163 .capture = {
164 .stream_name = "AC97 Capture",
165 .channels_min = 2,
166 .channels_max = 2,
167 .rates = PXA2XX_AC97_RATES,
168 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
169 .ops = &pxa_ac97_hifi_dai_ops,
170 },
171 {
172 .name = "pxa2xx-ac97-aux",
173 .playback = {
174 .stream_name = "AC97 Aux Playback",
175 .channels_min = 1,
176 .channels_max = 1,
177 .rates = PXA2XX_AC97_RATES,
178 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
179 .capture = {
180 .stream_name = "AC97 Aux Capture",
181 .channels_min = 1,
182 .channels_max = 1,
183 .rates = PXA2XX_AC97_RATES,
184 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
185 .ops = &pxa_ac97_aux_dai_ops,
186 },
187 {
188 .name = "pxa2xx-ac97-mic",
189 .capture = {
190 .stream_name = "AC97 Mic Capture",
191 .channels_min = 1,
192 .channels_max = 1,
193 .rates = PXA2XX_AC97_RATES,
194 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
195 .ops = &pxa_ac97_mic_dai_ops,
196 },
197 };
198
199 static const struct snd_soc_component_driver pxa_ac97_component = {
200 .name = "pxa-ac97",
201 .pcm_construct = pxa2xx_soc_pcm_new,
202 .open = pxa2xx_soc_pcm_open,
203 .close = pxa2xx_soc_pcm_close,
204 .hw_params = pxa2xx_soc_pcm_hw_params,
205 .prepare = pxa2xx_soc_pcm_prepare,
206 .trigger = pxa2xx_soc_pcm_trigger,
207 .pointer = pxa2xx_soc_pcm_pointer,
208 };
209
210 #ifdef CONFIG_OF
211 static const struct of_device_id pxa2xx_ac97_dt_ids[] = {
212 { .compatible = "marvell,pxa250-ac97", },
213 { .compatible = "marvell,pxa270-ac97", },
214 { .compatible = "marvell,pxa300-ac97", },
215 { }
216 };
217 MODULE_DEVICE_TABLE(of, pxa2xx_ac97_dt_ids);
218
219 #endif
220
221 static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
222 {
223 int ret;
224 struct ac97_controller *ctrl;
225 pxa2xx_audio_ops_t *pdata = pdev->dev.platform_data;
226 struct resource *regs;
227 void **codecs_pdata;
228
229 if (pdev->id != -1) {
230 dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
231 return -ENXIO;
232 }
233
234 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
235 if (!regs)
236 return -ENXIO;
237
238 pxa2xx_ac97_pcm_stereo_in.addr = regs->start + PCDR;
239 pxa2xx_ac97_pcm_stereo_out.addr = regs->start + PCDR;
240 pxa2xx_ac97_pcm_aux_mono_out.addr = regs->start + MODR;
241 pxa2xx_ac97_pcm_aux_mono_in.addr = regs->start + MODR;
242 pxa2xx_ac97_pcm_mic_mono_in.addr = regs->start + MCDR;
243
244 ret = pxa2xx_ac97_hw_probe(pdev);
245 if (ret) {
246 dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret);
247 return ret;
248 }
249
250 codecs_pdata = pdata ? pdata->codec_pdata : NULL;
251 ctrl = snd_ac97_controller_register(&pxa2xx_ac97_ops, &pdev->dev,
252 AC97_SLOTS_AVAILABLE_ALL,
253 codecs_pdata);
254 if (IS_ERR(ctrl))
255 return PTR_ERR(ctrl);
256
257 platform_set_drvdata(pdev, ctrl);
258 /* Punt most of the init to the SoC probe; we may need the machine
259 * driver to do interesting things with the clocking to get us up
260 * and running.
261 */
262 return devm_snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
263 pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver));
264 }
265
266 static void pxa2xx_ac97_dev_remove(struct platform_device *pdev)
267 {
268 struct ac97_controller *ctrl = platform_get_drvdata(pdev);
269
270 snd_ac97_controller_unregister(ctrl);
271 pxa2xx_ac97_hw_remove(pdev);
272 }
273
274 static int pxa2xx_ac97_dev_suspend(struct device *dev)
275 {
276 return pxa2xx_ac97_hw_suspend();
277 }
278
279 static int pxa2xx_ac97_dev_resume(struct device *dev)
280 {
281 return pxa2xx_ac97_hw_resume();
282 }
283
284 static DEFINE_SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops,
285 pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume);
286
287 static struct platform_driver pxa2xx_ac97_driver = {
288 .probe = pxa2xx_ac97_dev_probe,
289 .remove_new = pxa2xx_ac97_dev_remove,
290 .driver = {
291 .name = "pxa2xx-ac97",
292 .pm = &pxa2xx_ac97_pm_ops,
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
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