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(dev: 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(ops: &pxa2xx_ac97_ops, dev: &pdev->dev, |
252 | AC97_SLOTS_AVAILABLE_ALL, |
253 | codecs_pdata); |
254 | if (IS_ERR(ptr: ctrl)) |
255 | return PTR_ERR(ptr: ctrl); |
256 | |
257 | platform_set_drvdata(pdev, data: 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(dev: &pdev->dev, component_driver: &pxa_ac97_component, |
263 | dai_drv: 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(ac97_ctrl: ctrl); |
271 | pxa2xx_ac97_hw_remove(dev: 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 | |