72ed5a8c |
1 | /* |
2 | * cs42l51.c |
3 | * |
4 | * ASoC Driver for Cirrus Logic CS42L51 codecs |
5 | * |
6 | * Copyright (c) 2010 Arnaud Patard <apatard@mandriva.com> |
7 | * |
8 | * Based on cs4270.c - Copyright (c) Freescale Semiconductor |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License version 2 as |
12 | * published by the Free Software Foundation. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * For now: |
20 | * - Only I2C is support. Not SPI |
21 | * - master mode *NOT* supported |
22 | */ |
23 | |
24 | #include <linux/module.h> |
25 | #include <linux/platform_device.h> |
26 | #include <linux/slab.h> |
27 | #include <sound/core.h> |
28 | #include <sound/soc.h> |
29 | #include <sound/soc-dapm.h> |
30 | #include <sound/tlv.h> |
31 | #include <sound/initval.h> |
32 | #include <sound/pcm_params.h> |
33 | #include <sound/pcm.h> |
34 | #include <linux/i2c.h> |
35 | |
36 | #include "cs42l51.h" |
37 | |
38 | enum master_slave_mode { |
39 | MODE_SLAVE, |
40 | MODE_SLAVE_AUTO, |
41 | MODE_MASTER, |
42 | }; |
43 | |
44 | struct cs42l51_private { |
45 | unsigned int mclk; |
46 | unsigned int audio_mode; /* The mode (I2S or left-justified) */ |
47 | enum master_slave_mode func; |
48 | struct snd_soc_codec codec; |
49 | u8 reg_cache[CS42L51_NUMREGS]; |
50 | }; |
51 | |
52 | static struct snd_soc_codec *cs42l51_codec; |
53 | |
54 | #define CS42L51_FORMATS ( \ |
55 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \ |
56 | SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \ |
57 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \ |
58 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE) |
59 | |
60 | static int cs42l51_fill_cache(struct snd_soc_codec *codec) |
61 | { |
62 | u8 *cache = codec->reg_cache + 1; |
63 | struct i2c_client *i2c_client = codec->control_data; |
64 | s32 length; |
65 | |
66 | length = i2c_smbus_read_i2c_block_data(i2c_client, |
67 | CS42L51_FIRSTREG | 0x80, CS42L51_NUMREGS, cache); |
68 | if (length != CS42L51_NUMREGS) { |
69 | dev_err(&i2c_client->dev, |
70 | "I2C read failure, addr=0x%x (ret=%d vs %d)\n", |
71 | i2c_client->addr, length, CS42L51_NUMREGS); |
72 | return -EIO; |
73 | } |
74 | |
75 | return 0; |
76 | } |
77 | |
78 | static int cs42l51_i2c_probe(struct i2c_client *i2c_client, |
79 | const struct i2c_device_id *id) |
80 | { |
81 | struct snd_soc_codec *codec; |
82 | struct cs42l51_private *cs42l51; |
83 | int ret = 0; |
84 | int reg; |
85 | |
86 | if (cs42l51_codec) |
87 | return -EBUSY; |
88 | |
89 | /* Verify that we have a CS42L51 */ |
90 | ret = i2c_smbus_read_byte_data(i2c_client, CS42L51_CHIP_REV_ID); |
91 | if (ret < 0) { |
92 | dev_err(&i2c_client->dev, "failed to read I2C\n"); |
93 | goto error; |
94 | } |
95 | |
96 | if ((ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) && |
97 | (ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) { |
98 | dev_err(&i2c_client->dev, "Invalid chip id\n"); |
99 | ret = -ENODEV; |
100 | goto error; |
101 | } |
102 | |
103 | dev_info(&i2c_client->dev, "found device cs42l51 rev %d\n", |
104 | ret & 7); |
105 | |
106 | cs42l51 = kzalloc(sizeof(struct cs42l51_private), GFP_KERNEL); |
107 | if (!cs42l51) { |
108 | dev_err(&i2c_client->dev, "could not allocate codec\n"); |
109 | return -ENOMEM; |
110 | } |
111 | codec = &cs42l51->codec; |
112 | |
113 | mutex_init(&codec->mutex); |
114 | INIT_LIST_HEAD(&codec->dapm_widgets); |
115 | INIT_LIST_HEAD(&codec->dapm_paths); |
116 | |
117 | codec->dev = &i2c_client->dev; |
118 | codec->name = "CS42L51"; |
119 | codec->owner = THIS_MODULE; |
120 | codec->dai = &cs42l51_dai; |
121 | codec->num_dai = 1; |
122 | snd_soc_codec_set_drvdata(codec, cs42l51); |
123 | |
124 | codec->control_data = i2c_client; |
125 | codec->reg_cache = cs42l51->reg_cache; |
126 | codec->reg_cache_size = CS42L51_NUMREGS; |
127 | i2c_set_clientdata(i2c_client, codec); |
128 | |
129 | ret = cs42l51_fill_cache(codec); |
130 | if (ret < 0) { |
131 | dev_err(&i2c_client->dev, "failed to fill register cache\n"); |
132 | goto error_alloc; |
133 | } |
134 | |
135 | ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C); |
136 | if (ret < 0) { |
137 | dev_err(&i2c_client->dev, "Failed to set cache I/O: %d\n", ret); |
138 | goto error_alloc; |
139 | } |
140 | |
141 | /* |
142 | * DAC configuration |
143 | * - Use signal processor |
144 | * - auto mute |
145 | * - vol changes immediate |
146 | * - no de-emphasize |
147 | */ |
148 | reg = CS42L51_DAC_CTL_DATA_SEL(1) |
149 | | CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0); |
150 | ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg); |
151 | if (ret < 0) |
152 | goto error_alloc; |
153 | |
154 | cs42l51_dai.dev = codec->dev; |
155 | cs42l51_codec = codec; |
156 | |
157 | ret = snd_soc_register_codec(codec); |
158 | if (ret != 0) { |
159 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); |
160 | goto error_alloc; |
161 | } |
162 | |
163 | ret = snd_soc_register_dai(&cs42l51_dai); |
164 | if (ret < 0) { |
165 | dev_err(&i2c_client->dev, "failed to register DAIe\n"); |
166 | goto error_reg; |
167 | } |
168 | |
169 | return 0; |
170 | |
171 | error_reg: |
172 | snd_soc_unregister_codec(codec); |
173 | error_alloc: |
174 | kfree(cs42l51); |
175 | error: |
176 | return ret; |
177 | } |
178 | |
179 | static int cs42l51_i2c_remove(struct i2c_client *client) |
180 | { |
181 | struct cs42l51_private *cs42l51 = i2c_get_clientdata(client); |
182 | snd_soc_unregister_dai(&cs42l51_dai); |
183 | snd_soc_unregister_codec(cs42l51_codec); |
184 | cs42l51_codec = NULL; |
185 | kfree(cs42l51); |
186 | return 0; |
187 | } |
188 | |
189 | |
190 | static const struct i2c_device_id cs42l51_id[] = { |
191 | {"cs42l51", 0}, |
192 | {} |
193 | }; |
194 | MODULE_DEVICE_TABLE(i2c, cs42l51_id); |
195 | |
196 | static struct i2c_driver cs42l51_i2c_driver = { |
197 | .driver = { |
198 | .name = "CS42L51 I2C", |
199 | .owner = THIS_MODULE, |
200 | }, |
201 | .id_table = cs42l51_id, |
202 | .probe = cs42l51_i2c_probe, |
203 | .remove = cs42l51_i2c_remove, |
204 | }; |
205 | |
206 | static int cs42l51_get_chan_mix(struct snd_kcontrol *kcontrol, |
207 | struct snd_ctl_elem_value *ucontrol) |
208 | { |
209 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
210 | unsigned long value = snd_soc_read(codec, CS42L51_PCM_MIXER)&3; |
211 | |
212 | switch (value) { |
213 | default: |
214 | case 0: |
215 | ucontrol->value.integer.value[0] = 0; |
216 | break; |
217 | /* same value : (L+R)/2 and (R+L)/2 */ |
218 | case 1: |
219 | case 2: |
220 | ucontrol->value.integer.value[0] = 1; |
221 | break; |
222 | case 3: |
223 | ucontrol->value.integer.value[0] = 2; |
224 | break; |
225 | } |
226 | |
227 | return 0; |
228 | } |
229 | |
230 | #define CHAN_MIX_NORMAL 0x00 |
231 | #define CHAN_MIX_BOTH 0x55 |
232 | #define CHAN_MIX_SWAP 0xFF |
233 | |
234 | static int cs42l51_set_chan_mix(struct snd_kcontrol *kcontrol, |
235 | struct snd_ctl_elem_value *ucontrol) |
236 | { |
237 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
238 | unsigned char val; |
239 | |
240 | switch (ucontrol->value.integer.value[0]) { |
241 | default: |
242 | case 0: |
243 | val = CHAN_MIX_NORMAL; |
244 | break; |
245 | case 1: |
246 | val = CHAN_MIX_BOTH; |
247 | break; |
248 | case 2: |
249 | val = CHAN_MIX_SWAP; |
250 | break; |
251 | } |
252 | |
253 | snd_soc_write(codec, CS42L51_PCM_MIXER, val); |
254 | |
255 | return 1; |
256 | } |
257 | |
258 | static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -5150, 50, 0); |
259 | static const DECLARE_TLV_DB_SCALE(tone_tlv, -1050, 150, 0); |
260 | /* This is a lie. after -102 db, it stays at -102 */ |
261 | /* maybe a range would be better */ |
262 | static const DECLARE_TLV_DB_SCALE(aout_tlv, -11550, 50, 0); |
263 | |
264 | static const DECLARE_TLV_DB_SCALE(boost_tlv, 1600, 1600, 0); |
265 | static const char *chan_mix[] = { |
266 | "L R", |
267 | "L+R", |
268 | "R L", |
269 | }; |
270 | |
271 | static const struct soc_enum cs42l51_chan_mix = |
272 | SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(chan_mix), chan_mix); |
273 | |
274 | static const struct snd_kcontrol_new cs42l51_snd_controls[] = { |
275 | SOC_DOUBLE_R_SX_TLV("PCM Playback Volume", |
276 | CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, |
277 | 7, 0xffffff99, 0x18, adc_pcm_tlv), |
278 | SOC_DOUBLE_R("PCM Playback Switch", |
279 | CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 7, 1, 1), |
280 | SOC_DOUBLE_R_SX_TLV("Analog Playback Volume", |
281 | CS42L51_AOUTA_VOL, CS42L51_AOUTB_VOL, |
282 | 8, 0xffffff19, 0x18, aout_tlv), |
283 | SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume", |
284 | CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, |
285 | 7, 0xffffff99, 0x18, adc_pcm_tlv), |
286 | SOC_DOUBLE_R("ADC Mixer Switch", |
287 | CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 7, 1, 1), |
288 | SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL, 3, 1, 0), |
289 | SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL, 2, 1, 0), |
290 | SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL, 1, 1, 0), |
291 | SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL, 0, 0, 0), |
292 | SOC_DOUBLE_TLV("Mic Boost Volume", |
293 | CS42L51_MIC_CTL, 0, 1, 1, 0, boost_tlv), |
294 | SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL, 0, 0xf, 1, tone_tlv), |
295 | SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL, 4, 0xf, 1, tone_tlv), |
296 | SOC_ENUM_EXT("PCM channel mixer", |
297 | cs42l51_chan_mix, |
298 | cs42l51_get_chan_mix, cs42l51_set_chan_mix), |
299 | }; |
300 | |
301 | /* |
302 | * to power down, one must: |
303 | * 1.) Enable the PDN bit |
304 | * 2.) enable power-down for the select channels |
305 | * 3.) disable the PDN bit. |
306 | */ |
307 | static int cs42l51_pdn_event(struct snd_soc_dapm_widget *w, |
308 | struct snd_kcontrol *kcontrol, int event) |
309 | { |
310 | unsigned long value; |
311 | |
312 | value = snd_soc_read(w->codec, CS42L51_POWER_CTL1); |
313 | value &= ~CS42L51_POWER_CTL1_PDN; |
314 | |
315 | switch (event) { |
316 | case SND_SOC_DAPM_PRE_PMD: |
317 | value |= CS42L51_POWER_CTL1_PDN; |
318 | break; |
319 | default: |
320 | case SND_SOC_DAPM_POST_PMD: |
321 | break; |
322 | } |
323 | snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1, |
324 | CS42L51_POWER_CTL1_PDN, value); |
325 | |
326 | return 0; |
327 | } |
328 | |
329 | static const char *cs42l51_dac_names[] = {"Direct PCM", |
330 | "DSP PCM", "ADC"}; |
331 | static const struct soc_enum cs42l51_dac_mux_enum = |
332 | SOC_ENUM_SINGLE(CS42L51_DAC_CTL, 6, 3, cs42l51_dac_names); |
333 | static const struct snd_kcontrol_new cs42l51_dac_mux_controls = |
334 | SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum); |
335 | |
336 | static const char *cs42l51_adcl_names[] = {"AIN1 Left", "AIN2 Left", |
337 | "MIC Left", "MIC+preamp Left"}; |
338 | static const struct soc_enum cs42l51_adcl_mux_enum = |
339 | SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 4, 4, cs42l51_adcl_names); |
340 | static const struct snd_kcontrol_new cs42l51_adcl_mux_controls = |
341 | SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum); |
342 | |
343 | static const char *cs42l51_adcr_names[] = {"AIN1 Right", "AIN2 Right", |
344 | "MIC Right", "MIC+preamp Right"}; |
345 | static const struct soc_enum cs42l51_adcr_mux_enum = |
346 | SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 6, 4, cs42l51_adcr_names); |
347 | static const struct snd_kcontrol_new cs42l51_adcr_mux_controls = |
348 | SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum); |
349 | |
350 | static const struct snd_soc_dapm_widget cs42l51_dapm_widgets[] = { |
351 | SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL, 1, 1), |
352 | SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1, 3, 1, NULL, 0, |
353 | cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), |
354 | SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1, 4, 1, NULL, 0, |
355 | cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), |
356 | SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture", |
357 | CS42L51_POWER_CTL1, 1, 1, |
358 | cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), |
359 | SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture", |
360 | CS42L51_POWER_CTL1, 2, 1, |
361 | cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), |
362 | SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback", |
363 | CS42L51_POWER_CTL1, 5, 1, |
364 | cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), |
365 | SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback", |
366 | CS42L51_POWER_CTL1, 6, 1, |
367 | cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), |
368 | |
369 | /* analog/mic */ |
370 | SND_SOC_DAPM_INPUT("AIN1L"), |
371 | SND_SOC_DAPM_INPUT("AIN1R"), |
372 | SND_SOC_DAPM_INPUT("AIN2L"), |
373 | SND_SOC_DAPM_INPUT("AIN2R"), |
374 | SND_SOC_DAPM_INPUT("MICL"), |
375 | SND_SOC_DAPM_INPUT("MICR"), |
376 | |
377 | SND_SOC_DAPM_MIXER("Mic Preamp Left", |
378 | CS42L51_MIC_POWER_CTL, 2, 1, NULL, 0), |
379 | SND_SOC_DAPM_MIXER("Mic Preamp Right", |
380 | CS42L51_MIC_POWER_CTL, 3, 1, NULL, 0), |
381 | |
382 | /* HP */ |
383 | SND_SOC_DAPM_OUTPUT("HPL"), |
384 | SND_SOC_DAPM_OUTPUT("HPR"), |
385 | |
386 | /* mux */ |
387 | SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM, 0, 0, |
388 | &cs42l51_dac_mux_controls), |
389 | SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM, 0, 0, |
390 | &cs42l51_adcl_mux_controls), |
391 | SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM, 0, 0, |
392 | &cs42l51_adcr_mux_controls), |
393 | }; |
394 | |
395 | static const struct snd_soc_dapm_route cs42l51_routes[] = { |
396 | {"HPL", NULL, "Left DAC"}, |
397 | {"HPR", NULL, "Right DAC"}, |
398 | |
399 | {"Left ADC", NULL, "Left PGA"}, |
400 | {"Right ADC", NULL, "Right PGA"}, |
401 | |
402 | {"Mic Preamp Left", NULL, "MICL"}, |
403 | {"Mic Preamp Right", NULL, "MICR"}, |
404 | |
405 | {"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" }, |
406 | {"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" }, |
407 | {"PGA-ADC Mux Left", "MIC Left", "MICL" }, |
408 | {"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" }, |
409 | {"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" }, |
410 | {"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" }, |
411 | {"PGA-ADC Mux Right", "MIC Right", "MICR" }, |
412 | {"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" }, |
413 | |
414 | {"Left PGA", NULL, "PGA-ADC Mux Left"}, |
415 | {"Right PGA", NULL, "PGA-ADC Mux Right"}, |
416 | }; |
417 | |
418 | static int cs42l51_set_dai_fmt(struct snd_soc_dai *codec_dai, |
419 | unsigned int format) |
420 | { |
421 | struct snd_soc_codec *codec = codec_dai->codec; |
422 | struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec); |
423 | int ret = 0; |
424 | |
425 | switch (format & SND_SOC_DAIFMT_FORMAT_MASK) { |
426 | case SND_SOC_DAIFMT_I2S: |
427 | case SND_SOC_DAIFMT_LEFT_J: |
428 | case SND_SOC_DAIFMT_RIGHT_J: |
429 | cs42l51->audio_mode = format & SND_SOC_DAIFMT_FORMAT_MASK; |
430 | break; |
431 | default: |
432 | dev_err(codec->dev, "invalid DAI format\n"); |
433 | ret = -EINVAL; |
434 | } |
435 | |
436 | switch (format & SND_SOC_DAIFMT_MASTER_MASK) { |
437 | case SND_SOC_DAIFMT_CBM_CFM: |
438 | cs42l51->func = MODE_MASTER; |
439 | break; |
440 | case SND_SOC_DAIFMT_CBS_CFS: |
441 | cs42l51->func = MODE_SLAVE_AUTO; |
442 | break; |
443 | default: |
444 | ret = -EINVAL; |
445 | break; |
446 | } |
447 | |
448 | return ret; |
449 | } |
450 | |
451 | struct cs42l51_ratios { |
452 | unsigned int ratio; |
453 | unsigned char speed_mode; |
454 | unsigned char mclk; |
455 | }; |
456 | |
457 | static struct cs42l51_ratios slave_ratios[] = { |
458 | { 512, CS42L51_QSM_MODE, 0 }, { 768, CS42L51_QSM_MODE, 0 }, |
459 | { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 }, |
460 | { 2048, CS42L51_QSM_MODE, 0 }, { 3072, CS42L51_QSM_MODE, 0 }, |
461 | { 256, CS42L51_HSM_MODE, 0 }, { 384, CS42L51_HSM_MODE, 0 }, |
462 | { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 }, |
463 | { 1024, CS42L51_HSM_MODE, 0 }, { 1536, CS42L51_HSM_MODE, 0 }, |
464 | { 128, CS42L51_SSM_MODE, 0 }, { 192, CS42L51_SSM_MODE, 0 }, |
465 | { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 }, |
466 | { 512, CS42L51_SSM_MODE, 0 }, { 768, CS42L51_SSM_MODE, 0 }, |
467 | { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 }, |
468 | { 256, CS42L51_DSM_MODE, 0 }, { 384, CS42L51_DSM_MODE, 0 }, |
469 | }; |
470 | |
471 | static struct cs42l51_ratios slave_auto_ratios[] = { |
472 | { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 }, |
473 | { 2048, CS42L51_QSM_MODE, 1 }, { 3072, CS42L51_QSM_MODE, 1 }, |
474 | { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 }, |
475 | { 1024, CS42L51_HSM_MODE, 1 }, { 1536, CS42L51_HSM_MODE, 1 }, |
476 | { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 }, |
477 | { 512, CS42L51_SSM_MODE, 1 }, { 768, CS42L51_SSM_MODE, 1 }, |
478 | { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 }, |
479 | { 256, CS42L51_DSM_MODE, 1 }, { 384, CS42L51_DSM_MODE, 1 }, |
480 | }; |
481 | |
482 | static int cs42l51_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
483 | int clk_id, unsigned int freq, int dir) |
484 | { |
485 | struct snd_soc_codec *codec = codec_dai->codec; |
486 | struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec); |
487 | struct cs42l51_ratios *ratios = NULL; |
488 | int nr_ratios = 0; |
489 | unsigned int rates = 0; |
490 | unsigned int rate_min = -1; |
491 | unsigned int rate_max = 0; |
492 | int i; |
493 | |
494 | cs42l51->mclk = freq; |
495 | |
496 | switch (cs42l51->func) { |
497 | case MODE_MASTER: |
498 | return -EINVAL; |
499 | case MODE_SLAVE: |
500 | ratios = slave_ratios; |
501 | nr_ratios = ARRAY_SIZE(slave_ratios); |
502 | break; |
503 | case MODE_SLAVE_AUTO: |
504 | ratios = slave_auto_ratios; |
505 | nr_ratios = ARRAY_SIZE(slave_auto_ratios); |
506 | break; |
507 | } |
508 | |
509 | for (i = 0; i < nr_ratios; i++) { |
510 | unsigned int rate = freq / ratios[i].ratio; |
511 | rates |= snd_pcm_rate_to_rate_bit(rate); |
512 | if (rate < rate_min) |
513 | rate_min = rate; |
514 | if (rate > rate_max) |
515 | rate_max = rate; |
516 | } |
517 | rates &= ~SNDRV_PCM_RATE_KNOT; |
518 | |
519 | if (!rates) { |
520 | dev_err(codec->dev, "could not find a valid sample rate\n"); |
521 | return -EINVAL; |
522 | } |
523 | |
524 | codec_dai->playback.rates = rates; |
525 | codec_dai->playback.rate_min = rate_min; |
526 | codec_dai->playback.rate_max = rate_max; |
527 | |
528 | codec_dai->capture.rates = rates; |
529 | codec_dai->capture.rate_min = rate_min; |
530 | codec_dai->capture.rate_max = rate_max; |
531 | |
532 | return 0; |
533 | } |
534 | |
535 | static int cs42l51_hw_params(struct snd_pcm_substream *substream, |
536 | struct snd_pcm_hw_params *params, |
537 | struct snd_soc_dai *dai) |
538 | { |
539 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
540 | struct snd_soc_device *socdev = rtd->socdev; |
541 | struct snd_soc_codec *codec = socdev->card->codec; |
542 | struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec); |
543 | int ret; |
544 | unsigned int i; |
545 | unsigned int rate; |
546 | unsigned int ratio; |
547 | struct cs42l51_ratios *ratios = NULL; |
548 | int nr_ratios = 0; |
549 | int intf_ctl, power_ctl, fmt; |
550 | |
551 | switch (cs42l51->func) { |
552 | case MODE_MASTER: |
553 | return -EINVAL; |
554 | case MODE_SLAVE: |
555 | ratios = slave_ratios; |
556 | nr_ratios = ARRAY_SIZE(slave_ratios); |
557 | break; |
558 | case MODE_SLAVE_AUTO: |
559 | ratios = slave_auto_ratios; |
560 | nr_ratios = ARRAY_SIZE(slave_auto_ratios); |
561 | break; |
562 | } |
563 | |
564 | /* Figure out which MCLK/LRCK ratio to use */ |
565 | rate = params_rate(params); /* Sampling rate, in Hz */ |
566 | ratio = cs42l51->mclk / rate; /* MCLK/LRCK ratio */ |
567 | for (i = 0; i < nr_ratios; i++) { |
568 | if (ratios[i].ratio == ratio) |
569 | break; |
570 | } |
571 | |
572 | if (i == nr_ratios) { |
573 | /* We did not find a matching ratio */ |
574 | dev_err(codec->dev, "could not find matching ratio\n"); |
575 | return -EINVAL; |
576 | } |
577 | |
578 | intf_ctl = snd_soc_read(codec, CS42L51_INTF_CTL); |
579 | power_ctl = snd_soc_read(codec, CS42L51_MIC_POWER_CTL); |
580 | |
581 | intf_ctl &= ~(CS42L51_INTF_CTL_MASTER | CS42L51_INTF_CTL_ADC_I2S |
582 | | CS42L51_INTF_CTL_DAC_FORMAT(7)); |
583 | power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3) |
584 | | CS42L51_MIC_POWER_CTL_MCLK_DIV2); |
585 | |
586 | switch (cs42l51->func) { |
587 | case MODE_MASTER: |
588 | intf_ctl |= CS42L51_INTF_CTL_MASTER; |
589 | power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode); |
590 | break; |
591 | case MODE_SLAVE: |
592 | power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode); |
593 | break; |
594 | case MODE_SLAVE_AUTO: |
595 | power_ctl |= CS42L51_MIC_POWER_CTL_AUTO; |
596 | break; |
597 | } |
598 | |
599 | switch (cs42l51->audio_mode) { |
600 | case SND_SOC_DAIFMT_I2S: |
601 | intf_ctl |= CS42L51_INTF_CTL_ADC_I2S; |
602 | intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S); |
603 | break; |
604 | case SND_SOC_DAIFMT_LEFT_J: |
605 | intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24); |
606 | break; |
607 | case SND_SOC_DAIFMT_RIGHT_J: |
608 | switch (params_format(params)) { |
609 | case SNDRV_PCM_FORMAT_S16_LE: |
610 | case SNDRV_PCM_FORMAT_S16_BE: |
611 | fmt = CS42L51_DAC_DIF_RJ16; |
612 | break; |
613 | case SNDRV_PCM_FORMAT_S18_3LE: |
614 | case SNDRV_PCM_FORMAT_S18_3BE: |
615 | fmt = CS42L51_DAC_DIF_RJ18; |
616 | break; |
617 | case SNDRV_PCM_FORMAT_S20_3LE: |
618 | case SNDRV_PCM_FORMAT_S20_3BE: |
619 | fmt = CS42L51_DAC_DIF_RJ20; |
620 | break; |
621 | case SNDRV_PCM_FORMAT_S24_LE: |
622 | case SNDRV_PCM_FORMAT_S24_BE: |
623 | fmt = CS42L51_DAC_DIF_RJ24; |
624 | break; |
625 | default: |
626 | dev_err(codec->dev, "unknown format\n"); |
627 | return -EINVAL; |
628 | } |
629 | intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(fmt); |
630 | break; |
631 | default: |
632 | dev_err(codec->dev, "unknown format\n"); |
633 | return -EINVAL; |
634 | } |
635 | |
636 | if (ratios[i].mclk) |
637 | power_ctl |= CS42L51_MIC_POWER_CTL_MCLK_DIV2; |
638 | |
639 | ret = snd_soc_write(codec, CS42L51_INTF_CTL, intf_ctl); |
640 | if (ret < 0) |
641 | return ret; |
642 | |
643 | ret = snd_soc_write(codec, CS42L51_MIC_POWER_CTL, power_ctl); |
644 | if (ret < 0) |
645 | return ret; |
646 | |
647 | return 0; |
648 | } |
649 | |
650 | static int cs42l51_dai_mute(struct snd_soc_dai *dai, int mute) |
651 | { |
652 | struct snd_soc_codec *codec = dai->codec; |
653 | int reg; |
654 | int mask = CS42L51_DAC_OUT_CTL_DACA_MUTE|CS42L51_DAC_OUT_CTL_DACB_MUTE; |
655 | |
656 | reg = snd_soc_read(codec, CS42L51_DAC_OUT_CTL); |
657 | |
658 | if (mute) |
659 | reg |= mask; |
660 | else |
661 | reg &= ~mask; |
662 | |
663 | return snd_soc_write(codec, CS42L51_DAC_OUT_CTL, reg); |
664 | } |
665 | |
666 | static struct snd_soc_dai_ops cs42l51_dai_ops = { |
667 | .hw_params = cs42l51_hw_params, |
668 | .set_sysclk = cs42l51_set_dai_sysclk, |
669 | .set_fmt = cs42l51_set_dai_fmt, |
670 | .digital_mute = cs42l51_dai_mute, |
671 | }; |
672 | |
673 | struct snd_soc_dai cs42l51_dai = { |
674 | .name = "CS42L51 HiFi", |
675 | .playback = { |
676 | .stream_name = "Playback", |
677 | .channels_min = 1, |
678 | .channels_max = 2, |
679 | .rates = SNDRV_PCM_RATE_8000_96000, |
680 | .formats = CS42L51_FORMATS, |
681 | }, |
682 | .capture = { |
683 | .stream_name = "Capture", |
684 | .channels_min = 1, |
685 | .channels_max = 2, |
686 | .rates = SNDRV_PCM_RATE_8000_96000, |
687 | .formats = CS42L51_FORMATS, |
688 | }, |
689 | .ops = &cs42l51_dai_ops, |
690 | }; |
691 | EXPORT_SYMBOL_GPL(cs42l51_dai); |
692 | |
693 | |
694 | static int cs42l51_probe(struct platform_device *pdev) |
695 | { |
696 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
697 | struct snd_soc_codec *codec; |
698 | int ret = 0; |
699 | |
700 | if (!cs42l51_codec) { |
701 | dev_err(&pdev->dev, "CS42L51 codec not yet registered\n"); |
702 | return -EINVAL; |
703 | } |
704 | |
705 | socdev->card->codec = cs42l51_codec; |
706 | codec = socdev->card->codec; |
707 | |
708 | /* Register PCMs */ |
709 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
710 | if (ret < 0) { |
711 | dev_err(&pdev->dev, "failed to create PCMs\n"); |
712 | return ret; |
713 | } |
714 | |
715 | snd_soc_add_controls(codec, cs42l51_snd_controls, |
716 | ARRAY_SIZE(cs42l51_snd_controls)); |
717 | snd_soc_dapm_new_controls(codec, cs42l51_dapm_widgets, |
718 | ARRAY_SIZE(cs42l51_dapm_widgets)); |
719 | snd_soc_dapm_add_routes(codec, cs42l51_routes, |
720 | ARRAY_SIZE(cs42l51_routes)); |
721 | |
722 | return 0; |
723 | } |
724 | |
725 | |
726 | static int cs42l51_remove(struct platform_device *pdev) |
727 | { |
728 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
729 | |
730 | snd_soc_free_pcms(socdev); |
731 | snd_soc_dapm_free(socdev); |
732 | |
733 | return 0; |
734 | } |
735 | |
736 | struct snd_soc_codec_device soc_codec_device_cs42l51 = { |
737 | .probe = cs42l51_probe, |
738 | .remove = cs42l51_remove |
739 | }; |
740 | EXPORT_SYMBOL_GPL(soc_codec_device_cs42l51); |
741 | |
742 | static int __init cs42l51_init(void) |
743 | { |
744 | int ret; |
745 | |
746 | ret = i2c_add_driver(&cs42l51_i2c_driver); |
747 | if (ret != 0) { |
748 | printk(KERN_ERR "%s: can't add i2c driver\n", __func__); |
749 | return ret; |
750 | } |
751 | return 0; |
752 | } |
753 | module_init(cs42l51_init); |
754 | |
755 | static void __exit cs42l51_exit(void) |
756 | { |
757 | i2c_del_driver(&cs42l51_i2c_driver); |
758 | } |
759 | module_exit(cs42l51_exit); |
760 | |
761 | MODULE_AUTHOR("Arnaud Patard <apatard@mandriva.com>"); |
762 | MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver"); |
763 | MODULE_LICENSE("GPL"); |