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b7138212 CC |
1 | /* |
2 | * File: sound/soc/codecs/ssm2602.c | |
3 | * Author: Cliff Cai <Cliff.Cai@analog.com> | |
4 | * | |
5 | * Created: Tue June 06 2008 | |
6 | * Description: Driver for ssm2602 sound chip | |
7 | * | |
8 | * Modified: | |
9 | * Copyright 2008 Analog Devices Inc. | |
10 | * | |
11 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, see the file COPYING, or write | |
25 | * to the Free Software Foundation, Inc., | |
26 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
27 | */ | |
28 | ||
29 | #include <linux/module.h> | |
30 | #include <linux/moduleparam.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/pm.h> | |
34 | #include <linux/i2c.h> | |
35 | #include <linux/platform_device.h> | |
36 | #include <sound/core.h> | |
37 | #include <sound/pcm.h> | |
38 | #include <sound/pcm_params.h> | |
39 | #include <sound/soc.h> | |
40 | #include <sound/soc-dapm.h> | |
41 | #include <sound/initval.h> | |
42 | ||
43 | #include "ssm2602.h" | |
44 | ||
b7138212 CC |
45 | #define SSM2602_VERSION "0.1" |
46 | ||
47 | struct snd_soc_codec_device soc_codec_dev_ssm2602; | |
48 | ||
49 | /* codec private data */ | |
50 | struct ssm2602_priv { | |
51 | unsigned int sysclk; | |
52 | struct snd_pcm_substream *master_substream; | |
53 | struct snd_pcm_substream *slave_substream; | |
54 | }; | |
55 | ||
56 | /* | |
57 | * ssm2602 register cache | |
58 | * We can't read the ssm2602 register space when we are | |
59 | * using 2 wire for device control, so we cache them instead. | |
60 | * There is no point in caching the reset register | |
61 | */ | |
62 | static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = { | |
63 | 0x0017, 0x0017, 0x0079, 0x0079, | |
64 | 0x0000, 0x0000, 0x0000, 0x000a, | |
65 | 0x0000, 0x0000 | |
66 | }; | |
67 | ||
68 | /* | |
69 | * read ssm2602 register cache | |
70 | */ | |
71 | static inline unsigned int ssm2602_read_reg_cache(struct snd_soc_codec *codec, | |
72 | unsigned int reg) | |
73 | { | |
74 | u16 *cache = codec->reg_cache; | |
75 | if (reg == SSM2602_RESET) | |
76 | return 0; | |
77 | if (reg >= SSM2602_CACHEREGNUM) | |
78 | return -1; | |
79 | return cache[reg]; | |
80 | } | |
81 | ||
82 | /* | |
83 | * write ssm2602 register cache | |
84 | */ | |
85 | static inline void ssm2602_write_reg_cache(struct snd_soc_codec *codec, | |
86 | u16 reg, unsigned int value) | |
87 | { | |
88 | u16 *cache = codec->reg_cache; | |
89 | if (reg >= SSM2602_CACHEREGNUM) | |
90 | return; | |
91 | cache[reg] = value; | |
92 | } | |
93 | ||
94 | /* | |
95 | * write to the ssm2602 register space | |
96 | */ | |
97 | static int ssm2602_write(struct snd_soc_codec *codec, unsigned int reg, | |
98 | unsigned int value) | |
99 | { | |
100 | u8 data[2]; | |
101 | ||
102 | /* data is | |
103 | * D15..D9 ssm2602 register offset | |
104 | * D8...D0 register data | |
105 | */ | |
106 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); | |
107 | data[1] = value & 0x00ff; | |
108 | ||
109 | ssm2602_write_reg_cache(codec, reg, value); | |
110 | if (codec->hw_write(codec->control_data, data, 2) == 2) | |
111 | return 0; | |
112 | else | |
113 | return -EIO; | |
114 | } | |
115 | ||
116 | #define ssm2602_reset(c) ssm2602_write(c, SSM2602_RESET, 0) | |
117 | ||
118 | /*Appending several "None"s just for OSS mixer use*/ | |
119 | static const char *ssm2602_input_select[] = { | |
120 | "Line", "Mic", "None", "None", "None", | |
121 | "None", "None", "None", | |
122 | }; | |
123 | ||
124 | static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; | |
125 | ||
126 | static const struct soc_enum ssm2602_enum[] = { | |
127 | SOC_ENUM_SINGLE(SSM2602_APANA, 2, 2, ssm2602_input_select), | |
128 | SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, 4, ssm2602_deemph), | |
129 | }; | |
130 | ||
131 | static const struct snd_kcontrol_new ssm2602_snd_controls[] = { | |
132 | ||
133 | SOC_DOUBLE_R("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V, | |
134 | 0, 127, 0), | |
135 | SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V, | |
136 | 7, 1, 0), | |
137 | ||
138 | SOC_DOUBLE_R("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 31, 0), | |
139 | SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1), | |
140 | ||
141 | SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0), | |
142 | SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1), | |
143 | ||
144 | SOC_SINGLE("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1), | |
145 | ||
146 | SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1), | |
147 | SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0), | |
148 | ||
149 | SOC_ENUM("Capture Source", ssm2602_enum[0]), | |
150 | ||
151 | SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]), | |
152 | }; | |
153 | ||
154 | /* add non dapm controls */ | |
155 | static int ssm2602_add_controls(struct snd_soc_codec *codec) | |
156 | { | |
157 | int err, i; | |
158 | ||
159 | for (i = 0; i < ARRAY_SIZE(ssm2602_snd_controls); i++) { | |
160 | err = snd_ctl_add(codec->card, | |
161 | snd_soc_cnew(&ssm2602_snd_controls[i], codec, NULL)); | |
162 | if (err < 0) | |
163 | return err; | |
164 | } | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
169 | /* Output Mixer */ | |
170 | static const struct snd_kcontrol_new ssm2602_output_mixer_controls[] = { | |
171 | SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0), | |
172 | SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0), | |
173 | SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0), | |
174 | }; | |
175 | ||
176 | /* Input mux */ | |
177 | static const struct snd_kcontrol_new ssm2602_input_mux_controls = | |
178 | SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]); | |
179 | ||
180 | static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = { | |
181 | SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1, | |
182 | &ssm2602_output_mixer_controls[0], | |
183 | ARRAY_SIZE(ssm2602_output_mixer_controls)), | |
184 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1), | |
185 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
186 | SND_SOC_DAPM_OUTPUT("LHPOUT"), | |
187 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
188 | SND_SOC_DAPM_OUTPUT("RHPOUT"), | |
189 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1), | |
190 | SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls), | |
191 | SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0), | |
192 | SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1), | |
193 | SND_SOC_DAPM_INPUT("MICIN"), | |
194 | SND_SOC_DAPM_INPUT("RLINEIN"), | |
195 | SND_SOC_DAPM_INPUT("LLINEIN"), | |
196 | }; | |
197 | ||
198 | static const struct snd_soc_dapm_route audio_conn[] = { | |
199 | /* output mixer */ | |
200 | {"Output Mixer", "Line Bypass Switch", "Line Input"}, | |
201 | {"Output Mixer", "HiFi Playback Switch", "DAC"}, | |
202 | {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, | |
203 | ||
204 | /* outputs */ | |
205 | {"RHPOUT", NULL, "Output Mixer"}, | |
206 | {"ROUT", NULL, "Output Mixer"}, | |
207 | {"LHPOUT", NULL, "Output Mixer"}, | |
208 | {"LOUT", NULL, "Output Mixer"}, | |
209 | ||
210 | /* input mux */ | |
211 | {"Input Mux", "Line", "Line Input"}, | |
212 | {"Input Mux", "Mic", "Mic Bias"}, | |
213 | {"ADC", NULL, "Input Mux"}, | |
214 | ||
215 | /* inputs */ | |
216 | {"Line Input", NULL, "LLINEIN"}, | |
217 | {"Line Input", NULL, "RLINEIN"}, | |
218 | {"Mic Bias", NULL, "MICIN"}, | |
219 | }; | |
220 | ||
221 | static int ssm2602_add_widgets(struct snd_soc_codec *codec) | |
222 | { | |
223 | snd_soc_dapm_new_controls(codec, ssm2602_dapm_widgets, | |
224 | ARRAY_SIZE(ssm2602_dapm_widgets)); | |
225 | ||
226 | snd_soc_dapm_add_routes(codec, audio_conn, ARRAY_SIZE(audio_conn)); | |
227 | ||
228 | snd_soc_dapm_new_widgets(codec); | |
229 | return 0; | |
230 | } | |
231 | ||
232 | struct _coeff_div { | |
233 | u32 mclk; | |
234 | u32 rate; | |
235 | u16 fs; | |
236 | u8 sr:4; | |
237 | u8 bosr:1; | |
238 | u8 usb:1; | |
239 | }; | |
240 | ||
241 | /* codec mclk clock divider coefficients */ | |
242 | static const struct _coeff_div coeff_div[] = { | |
243 | /* 48k */ | |
244 | {12288000, 48000, 256, 0x0, 0x0, 0x0}, | |
245 | {18432000, 48000, 384, 0x0, 0x1, 0x0}, | |
246 | {12000000, 48000, 250, 0x0, 0x0, 0x1}, | |
247 | ||
248 | /* 32k */ | |
249 | {12288000, 32000, 384, 0x6, 0x0, 0x0}, | |
250 | {18432000, 32000, 576, 0x6, 0x1, 0x0}, | |
251 | {12000000, 32000, 375, 0x6, 0x0, 0x1}, | |
252 | ||
253 | /* 8k */ | |
254 | {12288000, 8000, 1536, 0x3, 0x0, 0x0}, | |
255 | {18432000, 8000, 2304, 0x3, 0x1, 0x0}, | |
256 | {11289600, 8000, 1408, 0xb, 0x0, 0x0}, | |
257 | {16934400, 8000, 2112, 0xb, 0x1, 0x0}, | |
258 | {12000000, 8000, 1500, 0x3, 0x0, 0x1}, | |
259 | ||
260 | /* 96k */ | |
261 | {12288000, 96000, 128, 0x7, 0x0, 0x0}, | |
262 | {18432000, 96000, 192, 0x7, 0x1, 0x0}, | |
263 | {12000000, 96000, 125, 0x7, 0x0, 0x1}, | |
264 | ||
265 | /* 44.1k */ | |
266 | {11289600, 44100, 256, 0x8, 0x0, 0x0}, | |
267 | {16934400, 44100, 384, 0x8, 0x1, 0x0}, | |
268 | {12000000, 44100, 272, 0x8, 0x1, 0x1}, | |
269 | ||
270 | /* 88.2k */ | |
271 | {11289600, 88200, 128, 0xf, 0x0, 0x0}, | |
272 | {16934400, 88200, 192, 0xf, 0x1, 0x0}, | |
273 | {12000000, 88200, 136, 0xf, 0x1, 0x1}, | |
274 | }; | |
275 | ||
276 | static inline int get_coeff(int mclk, int rate) | |
277 | { | |
278 | int i; | |
279 | ||
280 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { | |
281 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) | |
282 | return i; | |
283 | } | |
284 | return i; | |
285 | } | |
286 | ||
287 | static int ssm2602_hw_params(struct snd_pcm_substream *substream, | |
288 | struct snd_pcm_hw_params *params) | |
289 | { | |
290 | u16 srate; | |
291 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
292 | struct snd_soc_device *socdev = rtd->socdev; | |
293 | struct snd_soc_codec *codec = socdev->codec; | |
294 | struct ssm2602_priv *ssm2602 = codec->private_data; | |
295 | u16 iface = ssm2602_read_reg_cache(codec, SSM2602_IFACE) & 0xfff3; | |
296 | int i = get_coeff(ssm2602->sysclk, params_rate(params)); | |
297 | ||
298 | /*no match is found*/ | |
299 | if (i == ARRAY_SIZE(coeff_div)) | |
300 | return -EINVAL; | |
301 | ||
302 | srate = (coeff_div[i].sr << 2) | | |
303 | (coeff_div[i].bosr << 1) | coeff_div[i].usb; | |
304 | ||
305 | ssm2602_write(codec, SSM2602_ACTIVE, 0); | |
306 | ssm2602_write(codec, SSM2602_SRATE, srate); | |
307 | ||
308 | /* bit size */ | |
309 | switch (params_format(params)) { | |
310 | case SNDRV_PCM_FORMAT_S16_LE: | |
311 | break; | |
312 | case SNDRV_PCM_FORMAT_S20_3LE: | |
313 | iface |= 0x0004; | |
314 | break; | |
315 | case SNDRV_PCM_FORMAT_S24_LE: | |
316 | iface |= 0x0008; | |
317 | break; | |
318 | case SNDRV_PCM_FORMAT_S32_LE: | |
319 | iface |= 0x000c; | |
320 | break; | |
321 | } | |
322 | ssm2602_write(codec, SSM2602_IFACE, iface); | |
323 | ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC); | |
324 | return 0; | |
325 | } | |
326 | ||
327 | static int ssm2602_startup(struct snd_pcm_substream *substream) | |
328 | { | |
329 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
330 | struct snd_soc_device *socdev = rtd->socdev; | |
331 | struct snd_soc_codec *codec = socdev->codec; | |
332 | struct ssm2602_priv *ssm2602 = codec->private_data; | |
333 | struct snd_pcm_runtime *master_runtime; | |
334 | ||
335 | /* The DAI has shared clocks so if we already have a playback or | |
336 | * capture going then constrain this substream to match it. | |
337 | */ | |
338 | if (ssm2602->master_substream) { | |
339 | master_runtime = ssm2602->master_substream->runtime; | |
340 | snd_pcm_hw_constraint_minmax(substream->runtime, | |
341 | SNDRV_PCM_HW_PARAM_RATE, | |
342 | master_runtime->rate, | |
343 | master_runtime->rate); | |
344 | ||
345 | snd_pcm_hw_constraint_minmax(substream->runtime, | |
346 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
347 | master_runtime->sample_bits, | |
348 | master_runtime->sample_bits); | |
349 | ||
350 | ssm2602->slave_substream = substream; | |
351 | } else | |
352 | ssm2602->master_substream = substream; | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | static int ssm2602_pcm_prepare(struct snd_pcm_substream *substream) | |
358 | { | |
359 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
360 | struct snd_soc_device *socdev = rtd->socdev; | |
361 | struct snd_soc_codec *codec = socdev->codec; | |
362 | /* set active */ | |
363 | ssm2602_write(codec, SSM2602_ACTIVE, ACTIVE_ACTIVATE_CODEC); | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
368 | static void ssm2602_shutdown(struct snd_pcm_substream *substream) | |
369 | { | |
370 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
371 | struct snd_soc_device *socdev = rtd->socdev; | |
372 | struct snd_soc_codec *codec = socdev->codec; | |
373 | /* deactivate */ | |
374 | if (!codec->active) | |
375 | ssm2602_write(codec, SSM2602_ACTIVE, 0); | |
376 | } | |
377 | ||
378 | static int ssm2602_mute(struct snd_soc_dai *dai, int mute) | |
379 | { | |
380 | struct snd_soc_codec *codec = dai->codec; | |
381 | u16 mute_reg = ssm2602_read_reg_cache(codec, SSM2602_APDIGI) & ~APDIGI_ENABLE_DAC_MUTE; | |
382 | if (mute) | |
383 | ssm2602_write(codec, SSM2602_APDIGI, | |
384 | mute_reg | APDIGI_ENABLE_DAC_MUTE); | |
385 | else | |
386 | ssm2602_write(codec, SSM2602_APDIGI, mute_reg); | |
387 | return 0; | |
388 | } | |
389 | ||
390 | static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
391 | int clk_id, unsigned int freq, int dir) | |
392 | { | |
393 | struct snd_soc_codec *codec = codec_dai->codec; | |
394 | struct ssm2602_priv *ssm2602 = codec->private_data; | |
395 | switch (freq) { | |
396 | case 11289600: | |
397 | case 12000000: | |
398 | case 12288000: | |
399 | case 16934400: | |
400 | case 18432000: | |
401 | ssm2602->sysclk = freq; | |
402 | return 0; | |
403 | } | |
404 | return -EINVAL; | |
405 | } | |
406 | ||
407 | static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
408 | unsigned int fmt) | |
409 | { | |
410 | struct snd_soc_codec *codec = codec_dai->codec; | |
411 | u16 iface = 0; | |
412 | ||
413 | /* set master/slave audio interface */ | |
414 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
415 | case SND_SOC_DAIFMT_CBM_CFM: | |
416 | iface |= 0x0040; | |
417 | break; | |
418 | case SND_SOC_DAIFMT_CBS_CFS: | |
419 | break; | |
420 | default: | |
421 | return -EINVAL; | |
422 | } | |
423 | ||
424 | /* interface format */ | |
425 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
426 | case SND_SOC_DAIFMT_I2S: | |
427 | iface |= 0x0002; | |
428 | break; | |
429 | case SND_SOC_DAIFMT_RIGHT_J: | |
430 | break; | |
431 | case SND_SOC_DAIFMT_LEFT_J: | |
432 | iface |= 0x0001; | |
433 | break; | |
434 | case SND_SOC_DAIFMT_DSP_A: | |
435 | iface |= 0x0003; | |
436 | break; | |
437 | case SND_SOC_DAIFMT_DSP_B: | |
438 | iface |= 0x0013; | |
439 | break; | |
440 | default: | |
441 | return -EINVAL; | |
442 | } | |
443 | ||
444 | /* clock inversion */ | |
445 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
446 | case SND_SOC_DAIFMT_NB_NF: | |
447 | break; | |
448 | case SND_SOC_DAIFMT_IB_IF: | |
449 | iface |= 0x0090; | |
450 | break; | |
451 | case SND_SOC_DAIFMT_IB_NF: | |
452 | iface |= 0x0080; | |
453 | break; | |
454 | case SND_SOC_DAIFMT_NB_IF: | |
455 | iface |= 0x0010; | |
456 | break; | |
457 | default: | |
458 | return -EINVAL; | |
459 | } | |
460 | ||
461 | /* set iface */ | |
462 | ssm2602_write(codec, SSM2602_IFACE, iface); | |
463 | return 0; | |
464 | } | |
465 | ||
466 | static int ssm2602_set_bias_level(struct snd_soc_codec *codec, | |
467 | enum snd_soc_bias_level level) | |
468 | { | |
469 | u16 reg = ssm2602_read_reg_cache(codec, SSM2602_PWR) & 0xff7f; | |
470 | ||
471 | switch (level) { | |
472 | case SND_SOC_BIAS_ON: | |
473 | /* vref/mid, osc on, dac unmute */ | |
474 | ssm2602_write(codec, SSM2602_PWR, reg); | |
475 | break; | |
476 | case SND_SOC_BIAS_PREPARE: | |
477 | break; | |
478 | case SND_SOC_BIAS_STANDBY: | |
479 | /* everything off except vref/vmid, */ | |
480 | ssm2602_write(codec, SSM2602_PWR, reg | PWR_CLK_OUT_PDN); | |
481 | break; | |
482 | case SND_SOC_BIAS_OFF: | |
483 | /* everything off, dac mute, inactive */ | |
484 | ssm2602_write(codec, SSM2602_ACTIVE, 0); | |
485 | ssm2602_write(codec, SSM2602_PWR, 0xffff); | |
486 | break; | |
487 | ||
488 | } | |
489 | codec->bias_level = level; | |
490 | return 0; | |
491 | } | |
492 | ||
493 | #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ | |
494 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ | |
495 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ | |
496 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ | |
497 | SNDRV_PCM_RATE_96000) | |
498 | ||
499 | struct snd_soc_dai ssm2602_dai = { | |
500 | .name = "SSM2602", | |
501 | .playback = { | |
502 | .stream_name = "Playback", | |
503 | .channels_min = 2, | |
504 | .channels_max = 2, | |
505 | .rates = SSM2602_RATES, | |
506 | .formats = SNDRV_PCM_FMTBIT_S32_LE,}, | |
507 | .capture = { | |
508 | .stream_name = "Capture", | |
509 | .channels_min = 2, | |
510 | .channels_max = 2, | |
511 | .rates = SSM2602_RATES, | |
512 | .formats = SNDRV_PCM_FMTBIT_S32_LE,}, | |
513 | .ops = { | |
514 | .startup = ssm2602_startup, | |
515 | .prepare = ssm2602_pcm_prepare, | |
516 | .hw_params = ssm2602_hw_params, | |
517 | .shutdown = ssm2602_shutdown, | |
518 | }, | |
519 | .dai_ops = { | |
520 | .digital_mute = ssm2602_mute, | |
521 | .set_sysclk = ssm2602_set_dai_sysclk, | |
522 | .set_fmt = ssm2602_set_dai_fmt, | |
523 | } | |
524 | }; | |
525 | EXPORT_SYMBOL_GPL(ssm2602_dai); | |
526 | ||
527 | static int ssm2602_suspend(struct platform_device *pdev, pm_message_t state) | |
528 | { | |
529 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
530 | struct snd_soc_codec *codec = socdev->codec; | |
531 | ||
532 | ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
533 | return 0; | |
534 | } | |
535 | ||
536 | static int ssm2602_resume(struct platform_device *pdev) | |
537 | { | |
538 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
539 | struct snd_soc_codec *codec = socdev->codec; | |
540 | int i; | |
541 | u8 data[2]; | |
542 | u16 *cache = codec->reg_cache; | |
543 | ||
544 | /* Sync reg_cache with the hardware */ | |
545 | for (i = 0; i < ARRAY_SIZE(ssm2602_reg); i++) { | |
546 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
547 | data[1] = cache[i] & 0x00ff; | |
548 | codec->hw_write(codec->control_data, data, 2); | |
549 | } | |
550 | ssm2602_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
551 | ssm2602_set_bias_level(codec, codec->suspend_bias_level); | |
552 | return 0; | |
553 | } | |
554 | ||
555 | /* | |
556 | * initialise the ssm2602 driver | |
557 | * register the mixer and dsp interfaces with the kernel | |
558 | */ | |
559 | static int ssm2602_init(struct snd_soc_device *socdev) | |
560 | { | |
561 | struct snd_soc_codec *codec = socdev->codec; | |
562 | int reg, ret = 0; | |
563 | ||
564 | codec->name = "SSM2602"; | |
565 | codec->owner = THIS_MODULE; | |
566 | codec->read = ssm2602_read_reg_cache; | |
567 | codec->write = ssm2602_write; | |
568 | codec->set_bias_level = ssm2602_set_bias_level; | |
569 | codec->dai = &ssm2602_dai; | |
570 | codec->num_dai = 1; | |
571 | codec->reg_cache_size = sizeof(ssm2602_reg); | |
572 | codec->reg_cache = kmemdup(ssm2602_reg, sizeof(ssm2602_reg), | |
573 | GFP_KERNEL); | |
574 | if (codec->reg_cache == NULL) | |
575 | return -ENOMEM; | |
576 | ||
577 | ssm2602_reset(codec); | |
578 | ||
579 | /* register pcms */ | |
580 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
581 | if (ret < 0) { | |
582 | pr_err("ssm2602: failed to create pcms\n"); | |
583 | goto pcm_err; | |
584 | } | |
585 | /*power on device*/ | |
586 | ssm2602_write(codec, SSM2602_ACTIVE, 0); | |
587 | /* set the update bits */ | |
588 | reg = ssm2602_read_reg_cache(codec, SSM2602_LINVOL); | |
589 | ssm2602_write(codec, SSM2602_LINVOL, reg | LINVOL_LRIN_BOTH); | |
590 | reg = ssm2602_read_reg_cache(codec, SSM2602_RINVOL); | |
591 | ssm2602_write(codec, SSM2602_RINVOL, reg | RINVOL_RLIN_BOTH); | |
592 | reg = ssm2602_read_reg_cache(codec, SSM2602_LOUT1V); | |
593 | ssm2602_write(codec, SSM2602_LOUT1V, reg | LOUT1V_LRHP_BOTH); | |
594 | reg = ssm2602_read_reg_cache(codec, SSM2602_ROUT1V); | |
595 | ssm2602_write(codec, SSM2602_ROUT1V, reg | ROUT1V_RLHP_BOTH); | |
596 | /*select Line in as default input*/ | |
597 | ssm2602_write(codec, SSM2602_APANA, | |
598 | APANA_ENABLE_MIC_BOOST2 | APANA_SELECT_DAC | | |
599 | APANA_ENABLE_MIC_BOOST); | |
600 | ssm2602_write(codec, SSM2602_PWR, 0); | |
601 | ||
602 | ssm2602_add_controls(codec); | |
603 | ssm2602_add_widgets(codec); | |
604 | ret = snd_soc_register_card(socdev); | |
605 | if (ret < 0) { | |
606 | pr_err("ssm2602: failed to register card\n"); | |
607 | goto card_err; | |
608 | } | |
609 | ||
610 | return ret; | |
611 | ||
612 | card_err: | |
613 | snd_soc_free_pcms(socdev); | |
614 | snd_soc_dapm_free(socdev); | |
615 | pcm_err: | |
616 | kfree(codec->reg_cache); | |
617 | return ret; | |
618 | } | |
619 | ||
620 | static struct snd_soc_device *ssm2602_socdev; | |
621 | ||
622 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
623 | /* | |
624 | * ssm2602 2 wire address is determined by GPIO5 | |
625 | * state during powerup. | |
626 | * low = 0x1a | |
627 | * high = 0x1b | |
628 | */ | |
629 | static int ssm2602_i2c_probe(struct i2c_client *i2c, | |
630 | const struct i2c_device_id *id) | |
631 | { | |
632 | struct snd_soc_device *socdev = ssm2602_socdev; | |
633 | struct snd_soc_codec *codec = socdev->codec; | |
634 | int ret; | |
635 | ||
636 | i2c_set_clientdata(i2c, codec); | |
637 | codec->control_data = i2c; | |
638 | ||
639 | ret = ssm2602_init(socdev); | |
640 | if (ret < 0) | |
641 | pr_err("failed to initialise SSM2602\n"); | |
642 | ||
643 | return ret; | |
644 | } | |
645 | ||
646 | static int ssm2602_i2c_remove(struct i2c_client *client) | |
647 | { | |
648 | struct snd_soc_codec *codec = i2c_get_clientdata(client); | |
649 | kfree(codec->reg_cache); | |
650 | return 0; | |
651 | } | |
652 | ||
653 | static const struct i2c_device_id ssm2602_i2c_id[] = { | |
654 | { "ssm2602", 0 }, | |
655 | { } | |
656 | }; | |
657 | MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id); | |
658 | /* corgi i2c codec control layer */ | |
659 | static struct i2c_driver ssm2602_i2c_driver = { | |
660 | .driver = { | |
661 | .name = "SSM2602 I2C Codec", | |
662 | .owner = THIS_MODULE, | |
663 | }, | |
664 | .probe = ssm2602_i2c_probe, | |
665 | .remove = ssm2602_i2c_remove, | |
666 | .id_table = ssm2602_i2c_id, | |
667 | }; | |
668 | ||
669 | static int ssm2602_add_i2c_device(struct platform_device *pdev, | |
670 | const struct ssm2602_setup_data *setup) | |
671 | { | |
672 | struct i2c_board_info info; | |
673 | struct i2c_adapter *adapter; | |
674 | struct i2c_client *client; | |
675 | int ret; | |
676 | ||
677 | ret = i2c_add_driver(&ssm2602_i2c_driver); | |
678 | if (ret != 0) { | |
679 | dev_err(&pdev->dev, "can't add i2c driver\n"); | |
680 | return ret; | |
681 | } | |
682 | memset(&info, 0, sizeof(struct i2c_board_info)); | |
683 | info.addr = setup->i2c_address; | |
684 | strlcpy(info.type, "ssm2602", I2C_NAME_SIZE); | |
685 | adapter = i2c_get_adapter(setup->i2c_bus); | |
686 | if (!adapter) { | |
687 | dev_err(&pdev->dev, "can't get i2c adapter %d\n", | |
688 | setup->i2c_bus); | |
689 | goto err_driver; | |
690 | } | |
691 | client = i2c_new_device(adapter, &info); | |
692 | i2c_put_adapter(adapter); | |
693 | if (!client) { | |
694 | dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", | |
695 | (unsigned int)info.addr); | |
696 | goto err_driver; | |
697 | } | |
698 | return 0; | |
699 | err_driver: | |
700 | i2c_del_driver(&ssm2602_i2c_driver); | |
701 | return -ENODEV; | |
702 | } | |
703 | #endif | |
704 | ||
705 | static int ssm2602_probe(struct platform_device *pdev) | |
706 | { | |
707 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
708 | struct ssm2602_setup_data *setup; | |
709 | struct snd_soc_codec *codec; | |
710 | struct ssm2602_priv *ssm2602; | |
711 | int ret = 0; | |
712 | ||
713 | pr_info("ssm2602 Audio Codec %s", SSM2602_VERSION); | |
714 | ||
715 | setup = socdev->codec_data; | |
716 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); | |
717 | if (codec == NULL) | |
718 | return -ENOMEM; | |
719 | ||
720 | ssm2602 = kzalloc(sizeof(struct ssm2602_priv), GFP_KERNEL); | |
721 | if (ssm2602 == NULL) { | |
722 | kfree(codec); | |
723 | return -ENOMEM; | |
724 | } | |
725 | ||
726 | codec->private_data = ssm2602; | |
727 | socdev->codec = codec; | |
728 | mutex_init(&codec->mutex); | |
729 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
730 | INIT_LIST_HEAD(&codec->dapm_paths); | |
731 | ||
732 | ssm2602_socdev = socdev; | |
733 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
734 | if (setup->i2c_address) { | |
735 | codec->hw_write = (hw_write_t)i2c_master_send; | |
736 | ret = ssm2602_add_i2c_device(pdev, setup); | |
737 | } | |
738 | #else | |
739 | /* other interfaces */ | |
740 | #endif | |
741 | return ret; | |
742 | } | |
743 | ||
744 | /* remove everything here */ | |
745 | static int ssm2602_remove(struct platform_device *pdev) | |
746 | { | |
747 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
748 | struct snd_soc_codec *codec = socdev->codec; | |
749 | ||
750 | if (codec->control_data) | |
751 | ssm2602_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
752 | ||
753 | snd_soc_free_pcms(socdev); | |
754 | snd_soc_dapm_free(socdev); | |
755 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
756 | i2c_unregister_device(codec->control_data); | |
757 | i2c_del_driver(&ssm2602_i2c_driver); | |
758 | #endif | |
759 | kfree(codec->private_data); | |
760 | kfree(codec); | |
761 | ||
762 | return 0; | |
763 | } | |
764 | ||
765 | struct snd_soc_codec_device soc_codec_dev_ssm2602 = { | |
766 | .probe = ssm2602_probe, | |
767 | .remove = ssm2602_remove, | |
768 | .suspend = ssm2602_suspend, | |
769 | .resume = ssm2602_resume, | |
770 | }; | |
771 | EXPORT_SYMBOL_GPL(soc_codec_dev_ssm2602); | |
772 | ||
773 | MODULE_DESCRIPTION("ASoC ssm2602 driver"); | |
774 | MODULE_AUTHOR("Cliff Cai"); | |
775 | MODULE_LICENSE("GPL"); |