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RT-AC56 3.0.0.4.374.37 core
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / sound / soc / codecs / uda1380.c
blob2f925a27dcde2353f35566aa8dd2f057ebe3a971
1 /*
2 * uda1380.c - Philips UDA1380 ALSA SoC audio driver
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 * Copyright (c) 2007-2009 Philipp Zabel <philipp.zabel@gmail.com>
9 *
10 * Modified by Richard Purdie <richard@openedhand.com> to fit into SoC
11 * codec model.
12 *
13 * Copyright (c) 2005 Giorgio Padrin <giorgio@mandarinlogiq.org>
14 * Copyright 2005 Openedhand Ltd.
15 */
16
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/types.h>
20 #include <linux/slab.h>
21 #include <linux/errno.h>
22 #include <linux/gpio.h>
23 #include <linux/delay.h>
24 #include <linux/i2c.h>
25 #include <linux/workqueue.h>
26 #include <sound/core.h>
27 #include <sound/control.h>
28 #include <sound/initval.h>
29 #include <sound/soc.h>
30 #include <sound/soc-dapm.h>
31 #include <sound/tlv.h>
32 #include <sound/uda1380.h>
33
34 #include "uda1380.h"
35
36 static struct snd_soc_codec *uda1380_codec;
37
38 /* codec private data */
39 struct uda1380_priv {
40 struct snd_soc_codec codec;
41 u16 reg_cache[UDA1380_CACHEREGNUM];
42 unsigned int dac_clk;
43 struct work_struct work;
44 };
45
46 /*
47 * uda1380 register cache
48 */
49 static const u16 uda1380_reg[UDA1380_CACHEREGNUM] = {
50 0x0502, 0x0000, 0x0000, 0x3f3f,
51 0x0202, 0x0000, 0x0000, 0x0000,
52 0x0000, 0x0000, 0x0000, 0x0000,
53 0x0000, 0x0000, 0x0000, 0x0000,
54 0x0000, 0xff00, 0x0000, 0x4800,
55 0x0000, 0x0000, 0x0000, 0x0000,
56 0x0000, 0x0000, 0x0000, 0x0000,
57 0x0000, 0x0000, 0x0000, 0x0000,
58 0x0000, 0x8000, 0x0002, 0x0000,
59 };
60
61 static unsigned long uda1380_cache_dirty;
62
63 /*
64 * read uda1380 register cache
65 */
66 static inline unsigned int uda1380_read_reg_cache(struct snd_soc_codec *codec,
67 unsigned int reg)
68 {
69 u16 *cache = codec->reg_cache;
70 if (reg == UDA1380_RESET)
71 return 0;
72 if (reg >= UDA1380_CACHEREGNUM)
73 return -1;
74 return cache[reg];
75 }
76
77 /*
78 * write uda1380 register cache
79 */
80 static inline void uda1380_write_reg_cache(struct snd_soc_codec *codec,
81 u16 reg, unsigned int value)
82 {
83 u16 *cache = codec->reg_cache;
84
85 if (reg >= UDA1380_CACHEREGNUM)
86 return;
87 if ((reg >= 0x10) && (cache[reg] != value))
88 set_bit(reg - 0x10, &uda1380_cache_dirty);
89 cache[reg] = value;
90 }
91
92 /*
93 * write to the UDA1380 register space
94 */
95 static int uda1380_write(struct snd_soc_codec *codec, unsigned int reg,
96 unsigned int value)
97 {
98 u8 data[3];
99
100 /* data is
101 * data[0] is register offset
102 * data[1] is MS byte
103 * data[2] is LS byte
104 */
105 data[0] = reg;
106 data[1] = (value & 0xff00) >> 8;
107 data[2] = value & 0x00ff;
108
109 uda1380_write_reg_cache(codec, reg, value);
110
111 /* the interpolator & decimator regs must only be written when the
112 * codec DAI is active.
113 */
114 if (!codec->active && (reg >= UDA1380_MVOL))
115 return 0;
116 pr_debug("uda1380: hw write %x val %x\n", reg, value);
117 if (codec->hw_write(codec->control_data, data, 3) == 3) {
118 unsigned int val;
119 i2c_master_send(codec->control_data, data, 1);
120 i2c_master_recv(codec->control_data, data, 2);
121 val = (data[0]<<8) | data[1];
122 if (val != value) {
123 pr_debug("uda1380: READ BACK VAL %x\n",
124 (data[0]<<8) | data[1]);
125 return -EIO;
126 }
127 if (reg >= 0x10)
128 clear_bit(reg - 0x10, &uda1380_cache_dirty);
129 return 0;
130 } else
131 return -EIO;
132 }
133
134 #define uda1380_reset(c) uda1380_write(c, UDA1380_RESET, 0)
135
136 static void uda1380_flush_work(struct work_struct *work)
137 {
138 int bit, reg;
139
140 for_each_set_bit(bit, &uda1380_cache_dirty, UDA1380_CACHEREGNUM - 0x10) {
141 reg = 0x10 + bit;
142 pr_debug("uda1380: flush reg %x val %x:\n", reg,
143 uda1380_read_reg_cache(uda1380_codec, reg));
144 uda1380_write(uda1380_codec, reg,
145 uda1380_read_reg_cache(uda1380_codec, reg));
146 clear_bit(bit, &uda1380_cache_dirty);
147 }
148 }
149
150 /* declarations of ALSA reg_elem_REAL controls */
151 static const char *uda1380_deemp[] = {
152 "None",
153 "32kHz",
154 "44.1kHz",
155 "48kHz",
156 "96kHz",
157 };
158 static const char *uda1380_input_sel[] = {
159 "Line",
160 "Mic + Line R",
161 "Line L",
162 "Mic",
163 };
164 static const char *uda1380_output_sel[] = {
165 "DAC",
166 "Analog Mixer",
167 };
168 static const char *uda1380_spf_mode[] = {
169 "Flat",
170 "Minimum1",
171 "Minimum2",
172 "Maximum"
173 };
174 static const char *uda1380_capture_sel[] = {
175 "ADC",
176 "Digital Mixer"
177 };
178 static const char *uda1380_sel_ns[] = {
179 "3rd-order",
180 "5th-order"
181 };
182 static const char *uda1380_mix_control[] = {
183 "off",
184 "PCM only",
185 "before sound processing",
186 "after sound processing"
187 };
188 static const char *uda1380_sdet_setting[] = {
189 "3200",
190 "4800",
191 "9600",
192 "19200"
193 };
194 static const char *uda1380_os_setting[] = {
195 "single-speed",
196 "double-speed (no mixing)",
197 "quad-speed (no mixing)"
198 };
199
200 static const struct soc_enum uda1380_deemp_enum[] = {
201 SOC_ENUM_SINGLE(UDA1380_DEEMP, 8, 5, uda1380_deemp),
202 SOC_ENUM_SINGLE(UDA1380_DEEMP, 0, 5, uda1380_deemp),
203 };
204 static const struct soc_enum uda1380_input_sel_enum =
205 SOC_ENUM_SINGLE(UDA1380_ADC, 2, 4, uda1380_input_sel); /* SEL_MIC, SEL_LNA */
206 static const struct soc_enum uda1380_output_sel_enum =
207 SOC_ENUM_SINGLE(UDA1380_PM, 7, 2, uda1380_output_sel); /* R02_EN_AVC */
208 static const struct soc_enum uda1380_spf_enum =
209 SOC_ENUM_SINGLE(UDA1380_MODE, 14, 4, uda1380_spf_mode); /* M */
210 static const struct soc_enum uda1380_capture_sel_enum =
211 SOC_ENUM_SINGLE(UDA1380_IFACE, 6, 2, uda1380_capture_sel); /* SEL_SOURCE */
212 static const struct soc_enum uda1380_sel_ns_enum =
213 SOC_ENUM_SINGLE(UDA1380_MIXER, 14, 2, uda1380_sel_ns); /* SEL_NS */
214 static const struct soc_enum uda1380_mix_enum =
215 SOC_ENUM_SINGLE(UDA1380_MIXER, 12, 4, uda1380_mix_control); /* MIX, MIX_POS */
216 static const struct soc_enum uda1380_sdet_enum =
217 SOC_ENUM_SINGLE(UDA1380_MIXER, 4, 4, uda1380_sdet_setting); /* SD_VALUE */
218 static const struct soc_enum uda1380_os_enum =
219 SOC_ENUM_SINGLE(UDA1380_MIXER, 0, 3, uda1380_os_setting); /* OS */
220
221 /*
222 * from -48 dB in 1.5 dB steps (mute instead of -49.5 dB)
223 */
224 static DECLARE_TLV_DB_SCALE(amix_tlv, -4950, 150, 1);
225
226 /*
227 * from -78 dB in 1 dB steps (3 dB steps, really. LSB are ignored),
228 * from -66 dB in 0.5 dB steps (2 dB steps, really) and
229 * from -52 dB in 0.25 dB steps
230 */
231 static const unsigned int mvol_tlv[] = {
232 TLV_DB_RANGE_HEAD(3),
233 0, 15, TLV_DB_SCALE_ITEM(-8200, 100, 1),
234 16, 43, TLV_DB_SCALE_ITEM(-6600, 50, 0),
235 44, 252, TLV_DB_SCALE_ITEM(-5200, 25, 0),
236 };
237
238 /*
239 * from -72 dB in 1.5 dB steps (6 dB steps really),
240 * from -66 dB in 0.75 dB steps (3 dB steps really),
241 * from -60 dB in 0.5 dB steps (2 dB steps really) and
242 * from -46 dB in 0.25 dB steps
243 */
244 static const unsigned int vc_tlv[] = {
245 TLV_DB_RANGE_HEAD(4),
246 0, 7, TLV_DB_SCALE_ITEM(-7800, 150, 1),
247 8, 15, TLV_DB_SCALE_ITEM(-6600, 75, 0),
248 16, 43, TLV_DB_SCALE_ITEM(-6000, 50, 0),
249 44, 228, TLV_DB_SCALE_ITEM(-4600, 25, 0),
250 };
251
252 /* from 0 to 6 dB in 2 dB steps if SPF mode != flat */
253 static DECLARE_TLV_DB_SCALE(tr_tlv, 0, 200, 0);
254
255 /* from 0 to 24 dB in 2 dB steps, if SPF mode == maximum, otherwise cuts
256 * off at 18 dB max) */
257 static DECLARE_TLV_DB_SCALE(bb_tlv, 0, 200, 0);
258
259 /* from -63 to 24 dB in 0.5 dB steps (-128...48) */
260 static DECLARE_TLV_DB_SCALE(dec_tlv, -6400, 50, 1);
261
262 /* from 0 to 24 dB in 3 dB steps */
263 static DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0);
264
265 /* from 0 to 30 dB in 2 dB steps */
266 static DECLARE_TLV_DB_SCALE(vga_tlv, 0, 200, 0);
267
268 static const struct snd_kcontrol_new uda1380_snd_controls[] = {
269 SOC_DOUBLE_TLV("Analog Mixer Volume", UDA1380_AMIX, 0, 8, 44, 1, amix_tlv), /* AVCR, AVCL */
270 SOC_DOUBLE_TLV("Master Playback Volume", UDA1380_MVOL, 0, 8, 252, 1, mvol_tlv), /* MVCL, MVCR */
271 SOC_SINGLE_TLV("ADC Playback Volume", UDA1380_MIXVOL, 8, 228, 1, vc_tlv), /* VC2 */
272 SOC_SINGLE_TLV("PCM Playback Volume", UDA1380_MIXVOL, 0, 228, 1, vc_tlv), /* VC1 */
273 SOC_ENUM("Sound Processing Filter", uda1380_spf_enum), /* M */
274 SOC_DOUBLE_TLV("Tone Control - Treble", UDA1380_MODE, 4, 12, 3, 0, tr_tlv), /* TRL, TRR */
275 SOC_DOUBLE_TLV("Tone Control - Bass", UDA1380_MODE, 0, 8, 15, 0, bb_tlv), /* BBL, BBR */
276 /**/ SOC_SINGLE("Master Playback Switch", UDA1380_DEEMP, 14, 1, 1), /* MTM */
277 SOC_SINGLE("ADC Playback Switch", UDA1380_DEEMP, 11, 1, 1), /* MT2 from decimation filter */
278 SOC_ENUM("ADC Playback De-emphasis", uda1380_deemp_enum[0]), /* DE2 */
279 SOC_SINGLE("PCM Playback Switch", UDA1380_DEEMP, 3, 1, 1), /* MT1, from digital data input */
280 SOC_ENUM("PCM Playback De-emphasis", uda1380_deemp_enum[1]), /* DE1 */
281 SOC_SINGLE("DAC Polarity inverting Switch", UDA1380_MIXER, 15, 1, 0), /* DA_POL_INV */
282 SOC_ENUM("Noise Shaper", uda1380_sel_ns_enum), /* SEL_NS */
283 SOC_ENUM("Digital Mixer Signal Control", uda1380_mix_enum), /* MIX_POS, MIX */
284 SOC_SINGLE("Silence Detector Switch", UDA1380_MIXER, 6, 1, 0), /* SDET_ON */
285 SOC_ENUM("Silence Detector Setting", uda1380_sdet_enum), /* SD_VALUE */
286 SOC_ENUM("Oversampling Input", uda1380_os_enum), /* OS */
287 SOC_DOUBLE_S8_TLV("ADC Capture Volume", UDA1380_DEC, -128, 48, dec_tlv), /* ML_DEC, MR_DEC */
288 /**/ SOC_SINGLE("ADC Capture Switch", UDA1380_PGA, 15, 1, 1), /* MT_ADC */
289 SOC_DOUBLE_TLV("Line Capture Volume", UDA1380_PGA, 0, 8, 8, 0, pga_tlv), /* PGA_GAINCTRLL, PGA_GAINCTRLR */
290 SOC_SINGLE("ADC Polarity inverting Switch", UDA1380_ADC, 12, 1, 0), /* ADCPOL_INV */
291 SOC_SINGLE_TLV("Mic Capture Volume", UDA1380_ADC, 8, 15, 0, vga_tlv), /* VGA_CTRL */
292 SOC_SINGLE("DC Filter Bypass Switch", UDA1380_ADC, 1, 1, 0), /* SKIP_DCFIL (before decimator) */
293 SOC_SINGLE("DC Filter Enable Switch", UDA1380_ADC, 0, 1, 0), /* EN_DCFIL (at output of decimator) */
294 SOC_SINGLE("AGC Timing", UDA1380_AGC, 8, 7, 0), /* TODO: enum, see table 62 */
295 SOC_SINGLE("AGC Target level", UDA1380_AGC, 2, 3, 1), /* AGC_LEVEL */
296 /* -5.5, -8, -11.5, -14 dBFS */
297 SOC_SINGLE("AGC Switch", UDA1380_AGC, 0, 1, 0),
298 };
299
300 /* Input mux */
301 static const struct snd_kcontrol_new uda1380_input_mux_control =
302 SOC_DAPM_ENUM("Route", uda1380_input_sel_enum);
303
304 /* Output mux */
305 static const struct snd_kcontrol_new uda1380_output_mux_control =
306 SOC_DAPM_ENUM("Route", uda1380_output_sel_enum);
307
308 /* Capture mux */
309 static const struct snd_kcontrol_new uda1380_capture_mux_control =
310 SOC_DAPM_ENUM("Route", uda1380_capture_sel_enum);
311
312
313 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
314 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
315 &uda1380_input_mux_control),
316 SND_SOC_DAPM_MUX("Output Mux", SND_SOC_NOPM, 0, 0,
317 &uda1380_output_mux_control),
318 SND_SOC_DAPM_MUX("Capture Mux", SND_SOC_NOPM, 0, 0,
319 &uda1380_capture_mux_control),
320 SND_SOC_DAPM_PGA("Left PGA", UDA1380_PM, 3, 0, NULL, 0),
321 SND_SOC_DAPM_PGA("Right PGA", UDA1380_PM, 1, 0, NULL, 0),
322 SND_SOC_DAPM_PGA("Mic LNA", UDA1380_PM, 4, 0, NULL, 0),
323 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", UDA1380_PM, 2, 0),
324 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", UDA1380_PM, 0, 0),
325 SND_SOC_DAPM_INPUT("VINM"),
326 SND_SOC_DAPM_INPUT("VINL"),
327 SND_SOC_DAPM_INPUT("VINR"),
328 SND_SOC_DAPM_MIXER("Analog Mixer", UDA1380_PM, 6, 0, NULL, 0),
329 SND_SOC_DAPM_OUTPUT("VOUTLHP"),
330 SND_SOC_DAPM_OUTPUT("VOUTRHP"),
331 SND_SOC_DAPM_OUTPUT("VOUTL"),
332 SND_SOC_DAPM_OUTPUT("VOUTR"),
333 SND_SOC_DAPM_DAC("DAC", "Playback", UDA1380_PM, 10, 0),
334 SND_SOC_DAPM_PGA("HeadPhone Driver", UDA1380_PM, 13, 0, NULL, 0),
335 };
336
337 static const struct snd_soc_dapm_route audio_map[] = {
338
339 /* output mux */
340 {"HeadPhone Driver", NULL, "Output Mux"},
341 {"VOUTR", NULL, "Output Mux"},
342 {"VOUTL", NULL, "Output Mux"},
343
344 {"Analog Mixer", NULL, "VINR"},
345 {"Analog Mixer", NULL, "VINL"},
346 {"Analog Mixer", NULL, "DAC"},
347
348 {"Output Mux", "DAC", "DAC"},
349 {"Output Mux", "Analog Mixer", "Analog Mixer"},
350
351 /* {"DAC", "Digital Mixer", "I2S" } */
352
353 /* headphone driver */
354 {"VOUTLHP", NULL, "HeadPhone Driver"},
355 {"VOUTRHP", NULL, "HeadPhone Driver"},
356
357 /* input mux */
358 {"Left ADC", NULL, "Input Mux"},
359 {"Input Mux", "Mic", "Mic LNA"},
360 {"Input Mux", "Mic + Line R", "Mic LNA"},
361 {"Input Mux", "Line L", "Left PGA"},
362 {"Input Mux", "Line", "Left PGA"},
363
364 /* right input */
365 {"Right ADC", "Mic + Line R", "Right PGA"},
366 {"Right ADC", "Line", "Right PGA"},
367
368 /* inputs */
369 {"Mic LNA", NULL, "VINM"},
370 {"Left PGA", NULL, "VINL"},
371 {"Right PGA", NULL, "VINR"},
372 };
373
374 static int uda1380_add_widgets(struct snd_soc_codec *codec)
375 {
376 snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
377 ARRAY_SIZE(uda1380_dapm_widgets));
378
379 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
380
381 return 0;
382 }
383
384 static int uda1380_set_dai_fmt_both(struct snd_soc_dai *codec_dai,
385 unsigned int fmt)
386 {
387 struct snd_soc_codec *codec = codec_dai->codec;
388 int iface;
389
390 /* set up DAI based upon fmt */
391 iface = uda1380_read_reg_cache(codec, UDA1380_IFACE);
392 iface &= ~(R01_SFORI_MASK | R01_SIM | R01_SFORO_MASK);
393
394 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
395 case SND_SOC_DAIFMT_I2S:
396 iface |= R01_SFORI_I2S | R01_SFORO_I2S;
397 break;
398 case SND_SOC_DAIFMT_LSB:
399 iface |= R01_SFORI_LSB16 | R01_SFORO_LSB16;
400 break;
401 case SND_SOC_DAIFMT_MSB:
402 iface |= R01_SFORI_MSB | R01_SFORO_MSB;
403 }
404
405 /* DATAI is slave only, so in single-link mode, this has to be slave */
406 if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
407 return -EINVAL;
408
409 uda1380_write(codec, UDA1380_IFACE, iface);
410
411 return 0;
412 }
413
414 static int uda1380_set_dai_fmt_playback(struct snd_soc_dai *codec_dai,
415 unsigned int fmt)
416 {
417 struct snd_soc_codec *codec = codec_dai->codec;
418 int iface;
419
420 /* set up DAI based upon fmt */
421 iface = uda1380_read_reg_cache(codec, UDA1380_IFACE);
422 iface &= ~R01_SFORI_MASK;
423
424 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
425 case SND_SOC_DAIFMT_I2S:
426 iface |= R01_SFORI_I2S;
427 break;
428 case SND_SOC_DAIFMT_LSB:
429 iface |= R01_SFORI_LSB16;
430 break;
431 case SND_SOC_DAIFMT_MSB:
432 iface |= R01_SFORI_MSB;
433 }
434
435 /* DATAI is slave only, so this has to be slave */
436 if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
437 return -EINVAL;
438
439 uda1380_write(codec, UDA1380_IFACE, iface);
440
441 return 0;
442 }
443
444 static int uda1380_set_dai_fmt_capture(struct snd_soc_dai *codec_dai,
445 unsigned int fmt)
446 {
447 struct snd_soc_codec *codec = codec_dai->codec;
448 int iface;
449
450 /* set up DAI based upon fmt */
451 iface = uda1380_read_reg_cache(codec, UDA1380_IFACE);
452 iface &= ~(R01_SIM | R01_SFORO_MASK);
453
454 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
455 case SND_SOC_DAIFMT_I2S:
456 iface |= R01_SFORO_I2S;
457 break;
458 case SND_SOC_DAIFMT_LSB:
459 iface |= R01_SFORO_LSB16;
460 break;
461 case SND_SOC_DAIFMT_MSB:
462 iface |= R01_SFORO_MSB;
463 }
464
465 if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBM_CFM)
466 iface |= R01_SIM;
467
468 uda1380_write(codec, UDA1380_IFACE, iface);
469
470 return 0;
471 }
472
473 static int uda1380_trigger(struct snd_pcm_substream *substream, int cmd,
474 struct snd_soc_dai *dai)
475 {
476 struct snd_soc_pcm_runtime *rtd = substream->private_data;
477 struct snd_soc_device *socdev = rtd->socdev;
478 struct snd_soc_codec *codec = socdev->card->codec;
479 struct uda1380_priv *uda1380 = snd_soc_codec_get_drvdata(codec);
480 int mixer = uda1380_read_reg_cache(codec, UDA1380_MIXER);
481
482 switch (cmd) {
483 case SNDRV_PCM_TRIGGER_START:
484 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
485 uda1380_write_reg_cache(codec, UDA1380_MIXER,
486 mixer & ~R14_SILENCE);
487 schedule_work(&uda1380->work);
488 break;
489 case SNDRV_PCM_TRIGGER_STOP:
490 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
491 uda1380_write_reg_cache(codec, UDA1380_MIXER,
492 mixer | R14_SILENCE);
493 schedule_work(&uda1380->work);
494 break;
495 }
496 return 0;
497 }
498
499 static int uda1380_pcm_hw_params(struct snd_pcm_substream *substream,
500 struct snd_pcm_hw_params *params,
501 struct snd_soc_dai *dai)
502 {
503 struct snd_soc_pcm_runtime *rtd = substream->private_data;
504 struct snd_soc_device *socdev = rtd->socdev;
505 struct snd_soc_codec *codec = socdev->card->codec;
506 u16 clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
507
508 /* set WSPLL power and divider if running from this clock */
509 if (clk & R00_DAC_CLK) {
510 int rate = params_rate(params);
511 u16 pm = uda1380_read_reg_cache(codec, UDA1380_PM);
512 clk &= ~0x3; /* clear SEL_LOOP_DIV */
513 switch (rate) {
514 case 6250 ... 12500:
515 clk |= 0x0;
516 break;
517 case 12501 ... 25000:
518 clk |= 0x1;
519 break;
520 case 25001 ... 50000:
521 clk |= 0x2;
522 break;
523 case 50001 ... 100000:
524 clk |= 0x3;
525 break;
526 }
527 uda1380_write(codec, UDA1380_PM, R02_PON_PLL | pm);
528 }
529
530 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
531 clk |= R00_EN_DAC | R00_EN_INT;
532 else
533 clk |= R00_EN_ADC | R00_EN_DEC;
534
535 uda1380_write(codec, UDA1380_CLK, clk);
536 return 0;
537 }
538
539 static void uda1380_pcm_shutdown(struct snd_pcm_substream *substream,
540 struct snd_soc_dai *dai)
541 {
542 struct snd_soc_pcm_runtime *rtd = substream->private_data;
543 struct snd_soc_device *socdev = rtd->socdev;
544 struct snd_soc_codec *codec = socdev->card->codec;
545 u16 clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
546
547 /* shut down WSPLL power if running from this clock */
548 if (clk & R00_DAC_CLK) {
549 u16 pm = uda1380_read_reg_cache(codec, UDA1380_PM);
550 uda1380_write(codec, UDA1380_PM, ~R02_PON_PLL & pm);
551 }
552
553 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
554 clk &= ~(R00_EN_DAC | R00_EN_INT);
555 else
556 clk &= ~(R00_EN_ADC | R00_EN_DEC);
557
558 uda1380_write(codec, UDA1380_CLK, clk);
559 }
560
561 static int uda1380_set_bias_level(struct snd_soc_codec *codec,
562 enum snd_soc_bias_level level)
563 {
564 int pm = uda1380_read_reg_cache(codec, UDA1380_PM);
565
566 switch (level) {
567 case SND_SOC_BIAS_ON:
568 case SND_SOC_BIAS_PREPARE:
569 uda1380_write(codec, UDA1380_PM, R02_PON_BIAS | pm);
570 break;
571 case SND_SOC_BIAS_STANDBY:
572 uda1380_write(codec, UDA1380_PM, R02_PON_BIAS);
573 break;
574 case SND_SOC_BIAS_OFF:
575 uda1380_write(codec, UDA1380_PM, 0x0);
576 break;
577 }
578 codec->bias_level = level;
579 return 0;
580 }
581
582 #define UDA1380_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
583 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
584 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
585
586 static struct snd_soc_dai_ops uda1380_dai_ops = {
587 .hw_params = uda1380_pcm_hw_params,
588 .shutdown = uda1380_pcm_shutdown,
589 .trigger = uda1380_trigger,
590 .set_fmt = uda1380_set_dai_fmt_both,
591 };
592
593 static struct snd_soc_dai_ops uda1380_dai_ops_playback = {
594 .hw_params = uda1380_pcm_hw_params,
595 .shutdown = uda1380_pcm_shutdown,
596 .trigger = uda1380_trigger,
597 .set_fmt = uda1380_set_dai_fmt_playback,
598 };
599
600 static struct snd_soc_dai_ops uda1380_dai_ops_capture = {
601 .hw_params = uda1380_pcm_hw_params,
602 .shutdown = uda1380_pcm_shutdown,
603 .trigger = uda1380_trigger,
604 .set_fmt = uda1380_set_dai_fmt_capture,
605 };
606
607 struct snd_soc_dai uda1380_dai[] = {
608 {
609 .name = "UDA1380",
610 .playback = {
611 .stream_name = "Playback",
612 .channels_min = 1,
613 .channels_max = 2,
614 .rates = UDA1380_RATES,
615 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
616 .capture = {
617 .stream_name = "Capture",
618 .channels_min = 1,
619 .channels_max = 2,
620 .rates = UDA1380_RATES,
621 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
622 .ops = &uda1380_dai_ops,
623 },
624 { /* playback only - dual interface */
625 .name = "UDA1380",
626 .playback = {
627 .stream_name = "Playback",
628 .channels_min = 1,
629 .channels_max = 2,
630 .rates = UDA1380_RATES,
631 .formats = SNDRV_PCM_FMTBIT_S16_LE,
632 },
633 .ops = &uda1380_dai_ops_playback,
634 },
635 { /* capture only - dual interface*/
636 .name = "UDA1380",
637 .capture = {
638 .stream_name = "Capture",
639 .channels_min = 1,
640 .channels_max = 2,
641 .rates = UDA1380_RATES,
642 .formats = SNDRV_PCM_FMTBIT_S16_LE,
643 },
644 .ops = &uda1380_dai_ops_capture,
645 },
646 };
647 EXPORT_SYMBOL_GPL(uda1380_dai);
648
649 static int uda1380_suspend(struct platform_device *pdev, pm_message_t state)
650 {
651 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
652 struct snd_soc_codec *codec = socdev->card->codec;
653
654 uda1380_set_bias_level(codec, SND_SOC_BIAS_OFF);
655 return 0;
656 }
657
658 static int uda1380_resume(struct platform_device *pdev)
659 {
660 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
661 struct snd_soc_codec *codec = socdev->card->codec;
662 int i;
663 u8 data[2];
664 u16 *cache = codec->reg_cache;
665
666 /* Sync reg_cache with the hardware */
667 for (i = 0; i < ARRAY_SIZE(uda1380_reg); i++) {
668 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
669 data[1] = cache[i] & 0x00ff;
670 codec->hw_write(codec->control_data, data, 2);
671 }
672 uda1380_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
673 return 0;
674 }
675
676 static int uda1380_probe(struct platform_device *pdev)
677 {
678 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
679 struct snd_soc_codec *codec;
680 struct uda1380_platform_data *pdata;
681 int ret = 0;
682
683 if (uda1380_codec == NULL) {
684 dev_err(&pdev->dev, "Codec device not registered\n");
685 return -ENODEV;
686 }
687
688 socdev->card->codec = uda1380_codec;
689 codec = uda1380_codec;
690 pdata = codec->dev->platform_data;
691
692 /* register pcms */
693 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
694 if (ret < 0) {
695 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
696 goto pcm_err;
697 }
698
699 /* power on device */
700 uda1380_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
701 /* set clock input */
702 switch (pdata->dac_clk) {
703 case UDA1380_DAC_CLK_SYSCLK:
704 uda1380_write(codec, UDA1380_CLK, 0);
705 break;
706 case UDA1380_DAC_CLK_WSPLL:
707 uda1380_write(codec, UDA1380_CLK, R00_DAC_CLK);
708 break;
709 }
710
711 snd_soc_add_controls(codec, uda1380_snd_controls,
712 ARRAY_SIZE(uda1380_snd_controls));
713 uda1380_add_widgets(codec);
714
715 return ret;
716
717 pcm_err:
718 return ret;
719 }
720
721 /* power down chip */
722 static int uda1380_remove(struct platform_device *pdev)
723 {
724 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
725 struct snd_soc_codec *codec = socdev->card->codec;
726
727 if (codec->control_data)
728 uda1380_set_bias_level(codec, SND_SOC_BIAS_OFF);
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_dev_uda1380 = {
737 .probe = uda1380_probe,
738 .remove = uda1380_remove,
739 .suspend = uda1380_suspend,
740 .resume = uda1380_resume,
741 };
742 EXPORT_SYMBOL_GPL(soc_codec_dev_uda1380);
743
744 static int uda1380_register(struct uda1380_priv *uda1380)
745 {
746 int ret, i;
747 struct snd_soc_codec *codec = &uda1380->codec;
748 struct uda1380_platform_data *pdata = codec->dev->platform_data;
749
750 if (uda1380_codec) {
751 dev_err(codec->dev, "Another UDA1380 is registered\n");
752 return -EINVAL;
753 }
754
755 if (!pdata || !pdata->gpio_power || !pdata->gpio_reset)
756 return -EINVAL;
757
758 ret = gpio_request(pdata->gpio_power, "uda1380 power");
759 if (ret)
760 goto err_out;
761 ret = gpio_request(pdata->gpio_reset, "uda1380 reset");
762 if (ret)
763 goto err_gpio;
764
765 gpio_direction_output(pdata->gpio_power, 1);
766
767 /* we may need to have the clock running here - pH5 */
768 gpio_direction_output(pdata->gpio_reset, 1);
769 udelay(5);
770 gpio_set_value(pdata->gpio_reset, 0);
771
772 mutex_init(&codec->mutex);
773 INIT_LIST_HEAD(&codec->dapm_widgets);
774 INIT_LIST_HEAD(&codec->dapm_paths);
775
776 snd_soc_codec_set_drvdata(codec, uda1380);
777 codec->name = "UDA1380";
778 codec->owner = THIS_MODULE;
779 codec->read = uda1380_read_reg_cache;
780 codec->write = uda1380_write;
781 codec->bias_level = SND_SOC_BIAS_OFF;
782 codec->set_bias_level = uda1380_set_bias_level;
783 codec->dai = uda1380_dai;
784 codec->num_dai = ARRAY_SIZE(uda1380_dai);
785 codec->reg_cache_size = ARRAY_SIZE(uda1380_reg);
786 codec->reg_cache = &uda1380->reg_cache;
787 codec->reg_cache_step = 1;
788
789 memcpy(codec->reg_cache, uda1380_reg, sizeof(uda1380_reg));
790
791 ret = uda1380_reset(codec);
792 if (ret < 0) {
793 dev_err(codec->dev, "Failed to issue reset\n");
794 goto err_reset;
795 }
796
797 INIT_WORK(&uda1380->work, uda1380_flush_work);
798
799 for (i = 0; i < ARRAY_SIZE(uda1380_dai); i++)
800 uda1380_dai[i].dev = codec->dev;
801
802 uda1380_codec = codec;
803
804 ret = snd_soc_register_codec(codec);
805 if (ret != 0) {
806 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
807 goto err_reset;
808 }
809
810 ret = snd_soc_register_dais(uda1380_dai, ARRAY_SIZE(uda1380_dai));
811 if (ret != 0) {
812 dev_err(codec->dev, "Failed to register DAIs: %d\n", ret);
813 goto err_dai;
814 }
815
816 return 0;
817
818 err_dai:
819 snd_soc_unregister_codec(codec);
820 err_reset:
821 gpio_set_value(pdata->gpio_power, 0);
822 gpio_free(pdata->gpio_reset);
823 err_gpio:
824 gpio_free(pdata->gpio_power);
825 err_out:
826 return ret;
827 }
828
829 static void uda1380_unregister(struct uda1380_priv *uda1380)
830 {
831 struct snd_soc_codec *codec = &uda1380->codec;
832 struct uda1380_platform_data *pdata = codec->dev->platform_data;
833
834 snd_soc_unregister_dais(uda1380_dai, ARRAY_SIZE(uda1380_dai));
835 snd_soc_unregister_codec(&uda1380->codec);
836
837 gpio_set_value(pdata->gpio_power, 0);
838 gpio_free(pdata->gpio_reset);
839 gpio_free(pdata->gpio_power);
840
841 kfree(uda1380);
842 uda1380_codec = NULL;
843 }
844
845 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
846 static __devinit int uda1380_i2c_probe(struct i2c_client *i2c,
847 const struct i2c_device_id *id)
848 {
849 struct uda1380_priv *uda1380;
850 struct snd_soc_codec *codec;
851 int ret;
852
853 uda1380 = kzalloc(sizeof(struct uda1380_priv), GFP_KERNEL);
854 if (uda1380 == NULL)
855 return -ENOMEM;
856
857 codec = &uda1380->codec;
858 codec->hw_write = (hw_write_t)i2c_master_send;
859
860 i2c_set_clientdata(i2c, uda1380);
861 codec->control_data = i2c;
862
863 codec->dev = &i2c->dev;
864
865 ret = uda1380_register(uda1380);
866 if (ret != 0)
867 kfree(uda1380);
868
869 return ret;
870 }
871
872 static int __devexit uda1380_i2c_remove(struct i2c_client *i2c)
873 {
874 struct uda1380_priv *uda1380 = i2c_get_clientdata(i2c);
875 uda1380_unregister(uda1380);
876 return 0;
877 }
878
879 static const struct i2c_device_id uda1380_i2c_id[] = {
880 { "uda1380", 0 },
881 { }
882 };
883 MODULE_DEVICE_TABLE(i2c, uda1380_i2c_id);
884
885 static struct i2c_driver uda1380_i2c_driver = {
886 .driver = {
887 .name = "UDA1380 I2C Codec",
888 .owner = THIS_MODULE,
889 },
890 .probe = uda1380_i2c_probe,
891 .remove = __devexit_p(uda1380_i2c_remove),
892 .id_table = uda1380_i2c_id,
893 };
894 #endif
895
896 static int __init uda1380_modinit(void)
897 {
898 int ret;
899 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
900 ret = i2c_add_driver(&uda1380_i2c_driver);
901 if (ret != 0)
902 pr_err("Failed to register UDA1380 I2C driver: %d\n", ret);
903 #endif
904 return 0;
905 }
906 module_init(uda1380_modinit);
907
908 static void __exit uda1380_exit(void)
909 {
910 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
911 i2c_del_driver(&uda1380_i2c_driver);
912 #endif
913 }
914 module_exit(uda1380_exit);
915
916 MODULE_AUTHOR("Giorgio Padrin");
917 MODULE_DESCRIPTION("Audio support for codec Philips UDA1380");
918 MODULE_LICENSE("GPL");
Tomato firmware and modifications.