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3b097d64 LPC |
1 | /* |
2 | * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * You should have received a copy of the GNU General Public License along | |
9 | * with this program; if not, write to the Free Software Foundation, Inc., | |
10 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include <linux/kernel.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/slab.h> | |
18 | ||
19 | #include <linux/delay.h> | |
20 | ||
21 | #include <sound/core.h> | |
22 | #include <sound/pcm.h> | |
23 | #include <sound/pcm_params.h> | |
24 | #include <sound/initval.h> | |
3b097d64 LPC |
25 | #include <sound/soc.h> |
26 | ||
27 | #define JZ4740_REG_CODEC_1 0x0 | |
28 | #define JZ4740_REG_CODEC_2 0x1 | |
29 | ||
30 | #define JZ4740_CODEC_1_LINE_ENABLE BIT(29) | |
31 | #define JZ4740_CODEC_1_MIC_ENABLE BIT(28) | |
32 | #define JZ4740_CODEC_1_SW1_ENABLE BIT(27) | |
33 | #define JZ4740_CODEC_1_ADC_ENABLE BIT(26) | |
34 | #define JZ4740_CODEC_1_SW2_ENABLE BIT(25) | |
35 | #define JZ4740_CODEC_1_DAC_ENABLE BIT(24) | |
36 | #define JZ4740_CODEC_1_VREF_DISABLE BIT(20) | |
37 | #define JZ4740_CODEC_1_VREF_AMP_DISABLE BIT(19) | |
38 | #define JZ4740_CODEC_1_VREF_PULLDOWN BIT(18) | |
39 | #define JZ4740_CODEC_1_VREF_LOW_CURRENT BIT(17) | |
40 | #define JZ4740_CODEC_1_VREF_HIGH_CURRENT BIT(16) | |
41 | #define JZ4740_CODEC_1_HEADPHONE_DISABLE BIT(14) | |
42 | #define JZ4740_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13) | |
43 | #define JZ4740_CODEC_1_HEADPHONE_CHARGE BIT(12) | |
44 | #define JZ4740_CODEC_1_HEADPHONE_PULLDOWN (BIT(11) | BIT(10)) | |
45 | #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M BIT(9) | |
46 | #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN BIT(8) | |
47 | #define JZ4740_CODEC_1_SUSPEND BIT(1) | |
48 | #define JZ4740_CODEC_1_RESET BIT(0) | |
49 | ||
50 | #define JZ4740_CODEC_1_LINE_ENABLE_OFFSET 29 | |
51 | #define JZ4740_CODEC_1_MIC_ENABLE_OFFSET 28 | |
52 | #define JZ4740_CODEC_1_SW1_ENABLE_OFFSET 27 | |
53 | #define JZ4740_CODEC_1_ADC_ENABLE_OFFSET 26 | |
54 | #define JZ4740_CODEC_1_SW2_ENABLE_OFFSET 25 | |
55 | #define JZ4740_CODEC_1_DAC_ENABLE_OFFSET 24 | |
56 | #define JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET 14 | |
57 | #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET 8 | |
58 | ||
59 | #define JZ4740_CODEC_2_INPUT_VOLUME_MASK 0x1f0000 | |
60 | #define JZ4740_CODEC_2_SAMPLE_RATE_MASK 0x000f00 | |
61 | #define JZ4740_CODEC_2_MIC_BOOST_GAIN_MASK 0x000030 | |
62 | #define JZ4740_CODEC_2_HEADPHONE_VOLUME_MASK 0x000003 | |
63 | ||
64 | #define JZ4740_CODEC_2_INPUT_VOLUME_OFFSET 16 | |
65 | #define JZ4740_CODEC_2_SAMPLE_RATE_OFFSET 8 | |
66 | #define JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET 4 | |
67 | #define JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET 0 | |
68 | ||
69 | static const uint32_t jz4740_codec_regs[] = { | |
70 | 0x021b2302, 0x00170803, | |
71 | }; | |
72 | ||
73 | struct jz4740_codec { | |
74 | void __iomem *base; | |
75 | struct resource *mem; | |
3b097d64 LPC |
76 | }; |
77 | ||
3b097d64 LPC |
78 | static unsigned int jz4740_codec_read(struct snd_soc_codec *codec, |
79 | unsigned int reg) | |
80 | { | |
f0fba2ad | 81 | struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec); |
3b097d64 LPC |
82 | return readl(jz4740_codec->base + (reg << 2)); |
83 | } | |
84 | ||
85 | static int jz4740_codec_write(struct snd_soc_codec *codec, unsigned int reg, | |
86 | unsigned int val) | |
87 | { | |
f0fba2ad LG |
88 | struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec); |
89 | u32 *cache = codec->reg_cache; | |
3b097d64 | 90 | |
f0fba2ad | 91 | cache[reg] = val; |
3b097d64 LPC |
92 | writel(val, jz4740_codec->base + (reg << 2)); |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | static const struct snd_kcontrol_new jz4740_codec_controls[] = { | |
98 | SOC_SINGLE("Master Playback Volume", JZ4740_REG_CODEC_2, | |
99 | JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0), | |
100 | SOC_SINGLE("Master Capture Volume", JZ4740_REG_CODEC_2, | |
101 | JZ4740_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0), | |
102 | SOC_SINGLE("Master Playback Switch", JZ4740_REG_CODEC_1, | |
103 | JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1), | |
104 | SOC_SINGLE("Mic Capture Volume", JZ4740_REG_CODEC_2, | |
105 | JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0), | |
106 | }; | |
107 | ||
108 | static const struct snd_kcontrol_new jz4740_codec_output_controls[] = { | |
109 | SOC_DAPM_SINGLE("Bypass Switch", JZ4740_REG_CODEC_1, | |
110 | JZ4740_CODEC_1_SW1_ENABLE_OFFSET, 1, 0), | |
111 | SOC_DAPM_SINGLE("DAC Switch", JZ4740_REG_CODEC_1, | |
112 | JZ4740_CODEC_1_SW2_ENABLE_OFFSET, 1, 0), | |
113 | }; | |
114 | ||
115 | static const struct snd_kcontrol_new jz4740_codec_input_controls[] = { | |
116 | SOC_DAPM_SINGLE("Line Capture Switch", JZ4740_REG_CODEC_1, | |
117 | JZ4740_CODEC_1_LINE_ENABLE_OFFSET, 1, 0), | |
118 | SOC_DAPM_SINGLE("Mic Capture Switch", JZ4740_REG_CODEC_1, | |
119 | JZ4740_CODEC_1_MIC_ENABLE_OFFSET, 1, 0), | |
120 | }; | |
121 | ||
122 | static const struct snd_soc_dapm_widget jz4740_codec_dapm_widgets[] = { | |
123 | SND_SOC_DAPM_ADC("ADC", "Capture", JZ4740_REG_CODEC_1, | |
124 | JZ4740_CODEC_1_ADC_ENABLE_OFFSET, 0), | |
125 | SND_SOC_DAPM_DAC("DAC", "Playback", JZ4740_REG_CODEC_1, | |
126 | JZ4740_CODEC_1_DAC_ENABLE_OFFSET, 0), | |
127 | ||
128 | SND_SOC_DAPM_MIXER("Output Mixer", JZ4740_REG_CODEC_1, | |
129 | JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET, 1, | |
130 | jz4740_codec_output_controls, | |
131 | ARRAY_SIZE(jz4740_codec_output_controls)), | |
132 | ||
133 | SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0, | |
134 | jz4740_codec_input_controls, | |
135 | ARRAY_SIZE(jz4740_codec_input_controls)), | |
136 | SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0), | |
137 | ||
138 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
139 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
140 | ||
141 | SND_SOC_DAPM_INPUT("MIC"), | |
142 | SND_SOC_DAPM_INPUT("LIN"), | |
143 | SND_SOC_DAPM_INPUT("RIN"), | |
144 | }; | |
145 | ||
146 | static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = { | |
147 | {"Line Input", NULL, "LIN"}, | |
148 | {"Line Input", NULL, "RIN"}, | |
149 | ||
150 | {"Input Mixer", "Line Capture Switch", "Line Input"}, | |
151 | {"Input Mixer", "Mic Capture Switch", "MIC"}, | |
152 | ||
153 | {"ADC", NULL, "Input Mixer"}, | |
154 | ||
155 | {"Output Mixer", "Bypass Switch", "Input Mixer"}, | |
156 | {"Output Mixer", "DAC Switch", "DAC"}, | |
157 | ||
158 | {"LOUT", NULL, "Output Mixer"}, | |
159 | {"ROUT", NULL, "Output Mixer"}, | |
160 | }; | |
161 | ||
162 | static int jz4740_codec_hw_params(struct snd_pcm_substream *substream, | |
163 | struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) | |
164 | { | |
165 | uint32_t val; | |
166 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 167 | struct snd_soc_codec *codec =rtd->codec; |
3b097d64 LPC |
168 | |
169 | switch (params_rate(params)) { | |
170 | case 8000: | |
171 | val = 0; | |
172 | break; | |
173 | case 11025: | |
174 | val = 1; | |
175 | break; | |
176 | case 12000: | |
177 | val = 2; | |
178 | break; | |
179 | case 16000: | |
180 | val = 3; | |
181 | break; | |
182 | case 22050: | |
183 | val = 4; | |
184 | break; | |
185 | case 24000: | |
186 | val = 5; | |
187 | break; | |
188 | case 32000: | |
189 | val = 6; | |
190 | break; | |
191 | case 44100: | |
192 | val = 7; | |
193 | break; | |
194 | case 48000: | |
195 | val = 8; | |
196 | break; | |
197 | default: | |
198 | return -EINVAL; | |
199 | } | |
200 | ||
201 | val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET; | |
202 | ||
203 | snd_soc_update_bits(codec, JZ4740_REG_CODEC_2, | |
204 | JZ4740_CODEC_2_SAMPLE_RATE_MASK, val); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
85e7652d | 209 | static const struct snd_soc_dai_ops jz4740_codec_dai_ops = { |
3b097d64 LPC |
210 | .hw_params = jz4740_codec_hw_params, |
211 | }; | |
212 | ||
f0fba2ad LG |
213 | static struct snd_soc_dai_driver jz4740_codec_dai = { |
214 | .name = "jz4740-hifi", | |
3b097d64 LPC |
215 | .playback = { |
216 | .stream_name = "Playback", | |
217 | .channels_min = 2, | |
218 | .channels_max = 2, | |
219 | .rates = SNDRV_PCM_RATE_8000_48000, | |
220 | .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8, | |
221 | }, | |
222 | .capture = { | |
223 | .stream_name = "Capture", | |
224 | .channels_min = 2, | |
225 | .channels_max = 2, | |
226 | .rates = SNDRV_PCM_RATE_8000_48000, | |
227 | .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8, | |
228 | }, | |
229 | .ops = &jz4740_codec_dai_ops, | |
230 | .symmetric_rates = 1, | |
231 | }; | |
3b097d64 LPC |
232 | |
233 | static void jz4740_codec_wakeup(struct snd_soc_codec *codec) | |
234 | { | |
235 | int i; | |
236 | uint32_t *cache = codec->reg_cache; | |
237 | ||
238 | snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, | |
239 | JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET); | |
240 | udelay(2); | |
241 | ||
242 | snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, | |
243 | JZ4740_CODEC_1_SUSPEND | JZ4740_CODEC_1_RESET, 0); | |
244 | ||
245 | for (i = 0; i < ARRAY_SIZE(jz4740_codec_regs); ++i) | |
246 | jz4740_codec_write(codec, i, cache[i]); | |
247 | } | |
248 | ||
249 | static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec, | |
250 | enum snd_soc_bias_level level) | |
251 | { | |
252 | unsigned int mask; | |
253 | unsigned int value; | |
254 | ||
255 | switch (level) { | |
256 | case SND_SOC_BIAS_ON: | |
257 | break; | |
258 | case SND_SOC_BIAS_PREPARE: | |
259 | mask = JZ4740_CODEC_1_VREF_DISABLE | | |
260 | JZ4740_CODEC_1_VREF_AMP_DISABLE | | |
261 | JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; | |
262 | value = 0; | |
263 | ||
264 | snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value); | |
265 | break; | |
266 | case SND_SOC_BIAS_STANDBY: | |
267 | /* The only way to clear the suspend flag is to reset the codec */ | |
ce6120cc | 268 | if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) |
3b097d64 LPC |
269 | jz4740_codec_wakeup(codec); |
270 | ||
271 | mask = JZ4740_CODEC_1_VREF_DISABLE | | |
272 | JZ4740_CODEC_1_VREF_AMP_DISABLE | | |
273 | JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; | |
274 | value = JZ4740_CODEC_1_VREF_DISABLE | | |
275 | JZ4740_CODEC_1_VREF_AMP_DISABLE | | |
276 | JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M; | |
277 | ||
278 | snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value); | |
279 | break; | |
280 | case SND_SOC_BIAS_OFF: | |
281 | mask = JZ4740_CODEC_1_SUSPEND; | |
282 | value = JZ4740_CODEC_1_SUSPEND; | |
283 | ||
284 | snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value); | |
285 | break; | |
286 | default: | |
287 | break; | |
288 | } | |
289 | ||
ce6120cc | 290 | codec->dapm.bias_level = level; |
3b097d64 LPC |
291 | |
292 | return 0; | |
293 | } | |
294 | ||
f0fba2ad | 295 | static int jz4740_codec_dev_probe(struct snd_soc_codec *codec) |
3b097d64 | 296 | { |
f0fba2ad LG |
297 | snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, |
298 | JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE); | |
3b097d64 | 299 | |
f0fba2ad LG |
300 | jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
301 | ||
3b097d64 LPC |
302 | return 0; |
303 | } | |
304 | ||
f0fba2ad | 305 | static int jz4740_codec_dev_remove(struct snd_soc_codec *codec) |
3b097d64 | 306 | { |
f0fba2ad | 307 | jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF); |
3b097d64 LPC |
308 | |
309 | return 0; | |
310 | } | |
311 | ||
312 | #ifdef CONFIG_PM_SLEEP | |
313 | ||
f0fba2ad | 314 | static int jz4740_codec_suspend(struct snd_soc_codec *codec, pm_message_t state) |
3b097d64 | 315 | { |
3b097d64 LPC |
316 | return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF); |
317 | } | |
318 | ||
f0fba2ad | 319 | static int jz4740_codec_resume(struct snd_soc_codec *codec) |
3b097d64 | 320 | { |
3b097d64 LPC |
321 | return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
322 | } | |
323 | ||
324 | #else | |
325 | #define jz4740_codec_suspend NULL | |
326 | #define jz4740_codec_resume NULL | |
327 | #endif | |
328 | ||
f0fba2ad | 329 | static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = { |
3b097d64 LPC |
330 | .probe = jz4740_codec_dev_probe, |
331 | .remove = jz4740_codec_dev_remove, | |
332 | .suspend = jz4740_codec_suspend, | |
333 | .resume = jz4740_codec_resume, | |
f0fba2ad LG |
334 | .read = jz4740_codec_read, |
335 | .write = jz4740_codec_write, | |
336 | .set_bias_level = jz4740_codec_set_bias_level, | |
337 | .reg_cache_default = jz4740_codec_regs, | |
338 | .reg_word_size = sizeof(u32), | |
339 | .reg_cache_size = 2, | |
67447912 LPC |
340 | |
341 | .controls = jz4740_codec_controls, | |
342 | .num_controls = ARRAY_SIZE(jz4740_codec_controls), | |
343 | .dapm_widgets = jz4740_codec_dapm_widgets, | |
344 | .num_dapm_widgets = ARRAY_SIZE(jz4740_codec_dapm_widgets), | |
345 | .dapm_routes = jz4740_codec_dapm_routes, | |
346 | .num_dapm_routes = ARRAY_SIZE(jz4740_codec_dapm_routes), | |
3b097d64 | 347 | }; |
3b097d64 LPC |
348 | |
349 | static int __devinit jz4740_codec_probe(struct platform_device *pdev) | |
350 | { | |
351 | int ret; | |
352 | struct jz4740_codec *jz4740_codec; | |
3b097d64 LPC |
353 | struct resource *mem; |
354 | ||
355 | jz4740_codec = kzalloc(sizeof(*jz4740_codec), GFP_KERNEL); | |
356 | if (!jz4740_codec) | |
357 | return -ENOMEM; | |
358 | ||
359 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
360 | if (!mem) { | |
361 | dev_err(&pdev->dev, "Failed to get mmio memory resource\n"); | |
362 | ret = -ENOENT; | |
363 | goto err_free_codec; | |
364 | } | |
365 | ||
366 | mem = request_mem_region(mem->start, resource_size(mem), pdev->name); | |
367 | if (!mem) { | |
368 | dev_err(&pdev->dev, "Failed to request mmio memory region\n"); | |
369 | ret = -EBUSY; | |
370 | goto err_free_codec; | |
371 | } | |
372 | ||
373 | jz4740_codec->base = ioremap(mem->start, resource_size(mem)); | |
374 | if (!jz4740_codec->base) { | |
375 | dev_err(&pdev->dev, "Failed to ioremap mmio memory\n"); | |
376 | ret = -EBUSY; | |
377 | goto err_release_mem_region; | |
378 | } | |
379 | jz4740_codec->mem = mem; | |
380 | ||
3b097d64 LPC |
381 | platform_set_drvdata(pdev, jz4740_codec); |
382 | ||
f0fba2ad LG |
383 | ret = snd_soc_register_codec(&pdev->dev, |
384 | &soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1); | |
3b097d64 LPC |
385 | if (ret) { |
386 | dev_err(&pdev->dev, "Failed to register codec\n"); | |
387 | goto err_iounmap; | |
388 | } | |
389 | ||
3b097d64 LPC |
390 | return 0; |
391 | ||
3b097d64 LPC |
392 | err_iounmap: |
393 | iounmap(jz4740_codec->base); | |
394 | err_release_mem_region: | |
395 | release_mem_region(mem->start, resource_size(mem)); | |
396 | err_free_codec: | |
397 | kfree(jz4740_codec); | |
398 | ||
399 | return ret; | |
400 | } | |
401 | ||
402 | static int __devexit jz4740_codec_remove(struct platform_device *pdev) | |
403 | { | |
404 | struct jz4740_codec *jz4740_codec = platform_get_drvdata(pdev); | |
405 | struct resource *mem = jz4740_codec->mem; | |
406 | ||
f0fba2ad | 407 | snd_soc_unregister_codec(&pdev->dev); |
3b097d64 LPC |
408 | |
409 | iounmap(jz4740_codec->base); | |
410 | release_mem_region(mem->start, resource_size(mem)); | |
411 | ||
412 | platform_set_drvdata(pdev, NULL); | |
413 | kfree(jz4740_codec); | |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
418 | static struct platform_driver jz4740_codec_driver = { | |
419 | .probe = jz4740_codec_probe, | |
420 | .remove = __devexit_p(jz4740_codec_remove), | |
421 | .driver = { | |
422 | .name = "jz4740-codec", | |
423 | .owner = THIS_MODULE, | |
424 | }, | |
425 | }; | |
426 | ||
427 | static int __init jz4740_codec_init(void) | |
428 | { | |
429 | return platform_driver_register(&jz4740_codec_driver); | |
430 | } | |
431 | module_init(jz4740_codec_init); | |
432 | ||
433 | static void __exit jz4740_codec_exit(void) | |
434 | { | |
435 | platform_driver_unregister(&jz4740_codec_driver); | |
436 | } | |
437 | module_exit(jz4740_codec_exit); | |
438 | ||
439 | MODULE_DESCRIPTION("JZ4740 SoC internal codec driver"); | |
440 | MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); | |
441 | MODULE_LICENSE("GPL v2"); | |
442 | MODULE_ALIAS("platform:jz4740-codec"); |