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1ee44ce0 AP |
1 | /* |
2 | * SSM4567 amplifier audio driver | |
3 | * | |
4 | * Copyright 2014 Google Chromium project. | |
5 | * Author: Anatol Pomozov <anatol@chromium.org> | |
6 | * | |
7 | * Based on code copyright/by: | |
8 | * Copyright 2013 Analog Devices Inc. | |
9 | * | |
10 | * Licensed under the GPL-2. | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/i2c.h> | |
16 | #include <linux/regmap.h> | |
17 | #include <linux/slab.h> | |
18 | #include <sound/core.h> | |
19 | #include <sound/pcm.h> | |
20 | #include <sound/pcm_params.h> | |
21 | #include <sound/soc.h> | |
22 | #include <sound/initval.h> | |
23 | #include <sound/tlv.h> | |
24 | ||
25 | #define SSM4567_REG_POWER_CTRL 0x00 | |
26 | #define SSM4567_REG_AMP_SNS_CTRL 0x01 | |
27 | #define SSM4567_REG_DAC_CTRL 0x02 | |
28 | #define SSM4567_REG_DAC_VOLUME 0x03 | |
29 | #define SSM4567_REG_SAI_CTRL_1 0x04 | |
30 | #define SSM4567_REG_SAI_CTRL_2 0x05 | |
31 | #define SSM4567_REG_SAI_PLACEMENT_1 0x06 | |
32 | #define SSM4567_REG_SAI_PLACEMENT_2 0x07 | |
33 | #define SSM4567_REG_SAI_PLACEMENT_3 0x08 | |
34 | #define SSM4567_REG_SAI_PLACEMENT_4 0x09 | |
35 | #define SSM4567_REG_SAI_PLACEMENT_5 0x0a | |
36 | #define SSM4567_REG_SAI_PLACEMENT_6 0x0b | |
37 | #define SSM4567_REG_BATTERY_V_OUT 0x0c | |
38 | #define SSM4567_REG_LIMITER_CTRL_1 0x0d | |
39 | #define SSM4567_REG_LIMITER_CTRL_2 0x0e | |
40 | #define SSM4567_REG_LIMITER_CTRL_3 0x0f | |
41 | #define SSM4567_REG_STATUS_1 0x10 | |
42 | #define SSM4567_REG_STATUS_2 0x11 | |
43 | #define SSM4567_REG_FAULT_CTRL 0x12 | |
44 | #define SSM4567_REG_PDM_CTRL 0x13 | |
45 | #define SSM4567_REG_MCLK_RATIO 0x14 | |
46 | #define SSM4567_REG_BOOST_CTRL_1 0x15 | |
47 | #define SSM4567_REG_BOOST_CTRL_2 0x16 | |
48 | #define SSM4567_REG_SOFT_RESET 0xff | |
49 | ||
50 | /* POWER_CTRL */ | |
51 | #define SSM4567_POWER_APWDN_EN BIT(7) | |
52 | #define SSM4567_POWER_BSNS_PWDN BIT(6) | |
53 | #define SSM4567_POWER_VSNS_PWDN BIT(5) | |
54 | #define SSM4567_POWER_ISNS_PWDN BIT(4) | |
55 | #define SSM4567_POWER_BOOST_PWDN BIT(3) | |
56 | #define SSM4567_POWER_AMP_PWDN BIT(2) | |
57 | #define SSM4567_POWER_VBAT_ONLY BIT(1) | |
58 | #define SSM4567_POWER_SPWDN BIT(0) | |
59 | ||
60 | /* DAC_CTRL */ | |
61 | #define SSM4567_DAC_HV BIT(7) | |
62 | #define SSM4567_DAC_MUTE BIT(6) | |
63 | #define SSM4567_DAC_HPF BIT(5) | |
64 | #define SSM4567_DAC_LPM BIT(4) | |
65 | #define SSM4567_DAC_FS_MASK 0x7 | |
66 | #define SSM4567_DAC_FS_8000_12000 0x0 | |
67 | #define SSM4567_DAC_FS_16000_24000 0x1 | |
68 | #define SSM4567_DAC_FS_32000_48000 0x2 | |
69 | #define SSM4567_DAC_FS_64000_96000 0x3 | |
70 | #define SSM4567_DAC_FS_128000_192000 0x4 | |
71 | ||
ead99f89 LPC |
72 | /* SAI_CTRL_1 */ |
73 | #define SSM4567_SAI_CTRL_1_BCLK BIT(6) | |
74 | #define SSM4567_SAI_CTRL_1_TDM_BLCKS_MASK (0x3 << 4) | |
75 | #define SSM4567_SAI_CTRL_1_TDM_BLCKS_32 (0x0 << 4) | |
76 | #define SSM4567_SAI_CTRL_1_TDM_BLCKS_48 (0x1 << 4) | |
77 | #define SSM4567_SAI_CTRL_1_TDM_BLCKS_64 (0x2 << 4) | |
78 | #define SSM4567_SAI_CTRL_1_FSYNC BIT(3) | |
79 | #define SSM4567_SAI_CTRL_1_LJ BIT(2) | |
80 | #define SSM4567_SAI_CTRL_1_TDM BIT(1) | |
81 | #define SSM4567_SAI_CTRL_1_PDM BIT(0) | |
82 | ||
83 | /* SAI_CTRL_2 */ | |
84 | #define SSM4567_SAI_CTRL_2_AUTO_SLOT BIT(3) | |
85 | #define SSM4567_SAI_CTRL_2_TDM_SLOT_MASK 0x7 | |
86 | #define SSM4567_SAI_CTRL_2_TDM_SLOT(x) (x) | |
87 | ||
1ee44ce0 AP |
88 | struct ssm4567 { |
89 | struct regmap *regmap; | |
90 | }; | |
91 | ||
92 | static const struct reg_default ssm4567_reg_defaults[] = { | |
93 | { SSM4567_REG_POWER_CTRL, 0x81 }, | |
94 | { SSM4567_REG_AMP_SNS_CTRL, 0x09 }, | |
95 | { SSM4567_REG_DAC_CTRL, 0x32 }, | |
96 | { SSM4567_REG_DAC_VOLUME, 0x40 }, | |
97 | { SSM4567_REG_SAI_CTRL_1, 0x00 }, | |
98 | { SSM4567_REG_SAI_CTRL_2, 0x08 }, | |
99 | { SSM4567_REG_SAI_PLACEMENT_1, 0x01 }, | |
100 | { SSM4567_REG_SAI_PLACEMENT_2, 0x20 }, | |
101 | { SSM4567_REG_SAI_PLACEMENT_3, 0x32 }, | |
102 | { SSM4567_REG_SAI_PLACEMENT_4, 0x07 }, | |
103 | { SSM4567_REG_SAI_PLACEMENT_5, 0x07 }, | |
104 | { SSM4567_REG_SAI_PLACEMENT_6, 0x07 }, | |
105 | { SSM4567_REG_BATTERY_V_OUT, 0x00 }, | |
106 | { SSM4567_REG_LIMITER_CTRL_1, 0xa4 }, | |
107 | { SSM4567_REG_LIMITER_CTRL_2, 0x73 }, | |
108 | { SSM4567_REG_LIMITER_CTRL_3, 0x00 }, | |
109 | { SSM4567_REG_STATUS_1, 0x00 }, | |
110 | { SSM4567_REG_STATUS_2, 0x00 }, | |
111 | { SSM4567_REG_FAULT_CTRL, 0x30 }, | |
112 | { SSM4567_REG_PDM_CTRL, 0x40 }, | |
113 | { SSM4567_REG_MCLK_RATIO, 0x11 }, | |
114 | { SSM4567_REG_BOOST_CTRL_1, 0x03 }, | |
115 | { SSM4567_REG_BOOST_CTRL_2, 0x00 }, | |
116 | { SSM4567_REG_SOFT_RESET, 0x00 }, | |
117 | }; | |
118 | ||
119 | ||
120 | static bool ssm4567_readable_reg(struct device *dev, unsigned int reg) | |
121 | { | |
122 | switch (reg) { | |
123 | case SSM4567_REG_POWER_CTRL ... SSM4567_REG_BOOST_CTRL_2: | |
124 | return true; | |
125 | default: | |
126 | return false; | |
127 | } | |
128 | ||
129 | } | |
130 | ||
131 | static bool ssm4567_writeable_reg(struct device *dev, unsigned int reg) | |
132 | { | |
133 | switch (reg) { | |
134 | case SSM4567_REG_POWER_CTRL ... SSM4567_REG_SAI_PLACEMENT_6: | |
135 | case SSM4567_REG_LIMITER_CTRL_1 ... SSM4567_REG_LIMITER_CTRL_3: | |
136 | case SSM4567_REG_FAULT_CTRL ... SSM4567_REG_BOOST_CTRL_2: | |
137 | /* The datasheet states that soft reset register is read-only, | |
138 | * but logically it is write-only. */ | |
139 | case SSM4567_REG_SOFT_RESET: | |
140 | return true; | |
141 | default: | |
142 | return false; | |
143 | } | |
144 | } | |
145 | ||
146 | static bool ssm4567_volatile_reg(struct device *dev, unsigned int reg) | |
147 | { | |
148 | switch (reg) { | |
149 | case SSM4567_REG_BATTERY_V_OUT: | |
150 | case SSM4567_REG_STATUS_1 ... SSM4567_REG_STATUS_2: | |
151 | case SSM4567_REG_SOFT_RESET: | |
152 | return true; | |
153 | default: | |
154 | return false; | |
155 | } | |
156 | } | |
157 | ||
158 | static const DECLARE_TLV_DB_MINMAX_MUTE(ssm4567_vol_tlv, -7125, 2400); | |
159 | ||
160 | static const struct snd_kcontrol_new ssm4567_snd_controls[] = { | |
161 | SOC_SINGLE_TLV("Master Playback Volume", SSM4567_REG_DAC_VOLUME, 0, | |
162 | 0xff, 1, ssm4567_vol_tlv), | |
163 | SOC_SINGLE("DAC Low Power Mode Switch", SSM4567_REG_DAC_CTRL, 4, 1, 0), | |
feec843d LPC |
164 | SOC_SINGLE("DAC High Pass Filter Switch", SSM4567_REG_DAC_CTRL, |
165 | 5, 1, 0), | |
1ee44ce0 AP |
166 | }; |
167 | ||
5ad72152 LPC |
168 | static const struct snd_kcontrol_new ssm4567_amplifier_boost_control = |
169 | SOC_DAPM_SINGLE("Switch", SSM4567_REG_POWER_CTRL, 1, 1, 1); | |
170 | ||
1ee44ce0 AP |
171 | static const struct snd_soc_dapm_widget ssm4567_dapm_widgets[] = { |
172 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM4567_REG_POWER_CTRL, 2, 1), | |
5ad72152 LPC |
173 | SND_SOC_DAPM_SWITCH("Amplifier Boost", SSM4567_REG_POWER_CTRL, 3, 1, |
174 | &ssm4567_amplifier_boost_control), | |
1ee44ce0 AP |
175 | |
176 | SND_SOC_DAPM_OUTPUT("OUT"), | |
177 | }; | |
178 | ||
179 | static const struct snd_soc_dapm_route ssm4567_routes[] = { | |
5ad72152 LPC |
180 | { "OUT", NULL, "Amplifier Boost" }, |
181 | { "Amplifier Boost", "Switch", "DAC" }, | |
1ee44ce0 AP |
182 | { "OUT", NULL, "DAC" }, |
183 | }; | |
184 | ||
185 | static int ssm4567_hw_params(struct snd_pcm_substream *substream, | |
186 | struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) | |
187 | { | |
188 | struct snd_soc_codec *codec = dai->codec; | |
189 | struct ssm4567 *ssm4567 = snd_soc_codec_get_drvdata(codec); | |
190 | unsigned int rate = params_rate(params); | |
191 | unsigned int dacfs; | |
192 | ||
193 | if (rate >= 8000 && rate <= 12000) | |
194 | dacfs = SSM4567_DAC_FS_8000_12000; | |
195 | else if (rate >= 16000 && rate <= 24000) | |
196 | dacfs = SSM4567_DAC_FS_16000_24000; | |
197 | else if (rate >= 32000 && rate <= 48000) | |
198 | dacfs = SSM4567_DAC_FS_32000_48000; | |
199 | else if (rate >= 64000 && rate <= 96000) | |
200 | dacfs = SSM4567_DAC_FS_64000_96000; | |
1ee44ce0 AP |
201 | else if (rate >= 128000 && rate <= 192000) |
202 | dacfs = SSM4567_DAC_FS_128000_192000; | |
203 | else | |
204 | return -EINVAL; | |
205 | ||
206 | return regmap_update_bits(ssm4567->regmap, SSM4567_REG_DAC_CTRL, | |
207 | SSM4567_DAC_FS_MASK, dacfs); | |
208 | } | |
209 | ||
210 | static int ssm4567_mute(struct snd_soc_dai *dai, int mute) | |
211 | { | |
212 | struct ssm4567 *ssm4567 = snd_soc_codec_get_drvdata(dai->codec); | |
213 | unsigned int val; | |
214 | ||
215 | val = mute ? SSM4567_DAC_MUTE : 0; | |
216 | return regmap_update_bits(ssm4567->regmap, SSM4567_REG_DAC_CTRL, | |
217 | SSM4567_DAC_MUTE, val); | |
218 | } | |
219 | ||
ead99f89 LPC |
220 | static int ssm4567_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, |
221 | unsigned int rx_mask, int slots, int width) | |
222 | { | |
223 | struct ssm4567 *ssm4567 = snd_soc_dai_get_drvdata(dai); | |
224 | unsigned int blcks; | |
225 | int slot; | |
226 | int ret; | |
227 | ||
228 | if (tx_mask == 0) | |
229 | return -EINVAL; | |
230 | ||
231 | if (rx_mask && rx_mask != tx_mask) | |
232 | return -EINVAL; | |
233 | ||
234 | slot = __ffs(tx_mask); | |
235 | if (tx_mask != BIT(slot)) | |
236 | return -EINVAL; | |
237 | ||
238 | switch (width) { | |
239 | case 32: | |
240 | blcks = SSM4567_SAI_CTRL_1_TDM_BLCKS_32; | |
241 | break; | |
242 | case 48: | |
243 | blcks = SSM4567_SAI_CTRL_1_TDM_BLCKS_48; | |
244 | break; | |
245 | case 64: | |
246 | blcks = SSM4567_SAI_CTRL_1_TDM_BLCKS_64; | |
247 | break; | |
248 | default: | |
249 | return -EINVAL; | |
250 | } | |
251 | ||
252 | ret = regmap_update_bits(ssm4567->regmap, SSM4567_REG_SAI_CTRL_2, | |
253 | SSM4567_SAI_CTRL_2_AUTO_SLOT | SSM4567_SAI_CTRL_2_TDM_SLOT_MASK, | |
254 | SSM4567_SAI_CTRL_2_TDM_SLOT(slot)); | |
255 | if (ret) | |
256 | return ret; | |
257 | ||
258 | return regmap_update_bits(ssm4567->regmap, SSM4567_REG_SAI_CTRL_1, | |
259 | SSM4567_SAI_CTRL_1_TDM_BLCKS_MASK, blcks); | |
260 | } | |
261 | ||
262 | static int ssm4567_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
263 | { | |
264 | struct ssm4567 *ssm4567 = snd_soc_dai_get_drvdata(dai); | |
265 | unsigned int ctrl1 = 0; | |
266 | bool invert_fclk; | |
267 | ||
268 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
269 | case SND_SOC_DAIFMT_CBS_CFS: | |
270 | break; | |
271 | default: | |
272 | return -EINVAL; | |
273 | } | |
274 | ||
275 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
276 | case SND_SOC_DAIFMT_NB_NF: | |
277 | invert_fclk = false; | |
278 | break; | |
279 | case SND_SOC_DAIFMT_IB_NF: | |
280 | ctrl1 |= SSM4567_SAI_CTRL_1_BCLK; | |
281 | invert_fclk = false; | |
282 | break; | |
283 | case SND_SOC_DAIFMT_NB_IF: | |
284 | ctrl1 |= SSM4567_SAI_CTRL_1_FSYNC; | |
285 | invert_fclk = true; | |
286 | break; | |
287 | case SND_SOC_DAIFMT_IB_IF: | |
288 | ctrl1 |= SSM4567_SAI_CTRL_1_BCLK; | |
289 | invert_fclk = true; | |
290 | break; | |
291 | default: | |
292 | return -EINVAL; | |
293 | } | |
294 | ||
295 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
296 | case SND_SOC_DAIFMT_I2S: | |
297 | break; | |
298 | case SND_SOC_DAIFMT_LEFT_J: | |
299 | ctrl1 |= SSM4567_SAI_CTRL_1_LJ; | |
300 | invert_fclk = !invert_fclk; | |
301 | break; | |
302 | case SND_SOC_DAIFMT_DSP_A: | |
303 | ctrl1 |= SSM4567_SAI_CTRL_1_TDM; | |
304 | break; | |
305 | case SND_SOC_DAIFMT_DSP_B: | |
306 | ctrl1 |= SSM4567_SAI_CTRL_1_TDM | SSM4567_SAI_CTRL_1_LJ; | |
307 | break; | |
308 | case SND_SOC_DAIFMT_PDM: | |
309 | ctrl1 |= SSM4567_SAI_CTRL_1_PDM; | |
310 | break; | |
311 | default: | |
312 | return -EINVAL; | |
313 | } | |
314 | ||
315 | if (invert_fclk) | |
316 | ctrl1 |= SSM4567_SAI_CTRL_1_FSYNC; | |
317 | ||
318 | return regmap_write(ssm4567->regmap, SSM4567_REG_SAI_CTRL_1, ctrl1); | |
319 | } | |
320 | ||
1ee44ce0 AP |
321 | static int ssm4567_set_power(struct ssm4567 *ssm4567, bool enable) |
322 | { | |
323 | int ret = 0; | |
324 | ||
325 | if (!enable) { | |
326 | ret = regmap_update_bits(ssm4567->regmap, | |
327 | SSM4567_REG_POWER_CTRL, | |
328 | SSM4567_POWER_SPWDN, SSM4567_POWER_SPWDN); | |
329 | regcache_mark_dirty(ssm4567->regmap); | |
330 | } | |
331 | ||
332 | regcache_cache_only(ssm4567->regmap, !enable); | |
333 | ||
334 | if (enable) { | |
335 | ret = regmap_update_bits(ssm4567->regmap, | |
336 | SSM4567_REG_POWER_CTRL, | |
337 | SSM4567_POWER_SPWDN, 0x00); | |
338 | regcache_sync(ssm4567->regmap); | |
339 | } | |
340 | ||
341 | return ret; | |
342 | } | |
343 | ||
344 | static int ssm4567_set_bias_level(struct snd_soc_codec *codec, | |
345 | enum snd_soc_bias_level level) | |
346 | { | |
347 | struct ssm4567 *ssm4567 = snd_soc_codec_get_drvdata(codec); | |
348 | int ret = 0; | |
349 | ||
350 | switch (level) { | |
351 | case SND_SOC_BIAS_ON: | |
352 | break; | |
353 | case SND_SOC_BIAS_PREPARE: | |
354 | break; | |
355 | case SND_SOC_BIAS_STANDBY: | |
356 | if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) | |
357 | ret = ssm4567_set_power(ssm4567, true); | |
358 | break; | |
359 | case SND_SOC_BIAS_OFF: | |
360 | ret = ssm4567_set_power(ssm4567, false); | |
361 | break; | |
362 | } | |
363 | ||
364 | if (ret) | |
365 | return ret; | |
366 | ||
367 | codec->dapm.bias_level = level; | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
372 | static const struct snd_soc_dai_ops ssm4567_dai_ops = { | |
373 | .hw_params = ssm4567_hw_params, | |
374 | .digital_mute = ssm4567_mute, | |
ead99f89 LPC |
375 | .set_fmt = ssm4567_set_dai_fmt, |
376 | .set_tdm_slot = ssm4567_set_tdm_slot, | |
1ee44ce0 AP |
377 | }; |
378 | ||
379 | static struct snd_soc_dai_driver ssm4567_dai = { | |
380 | .name = "ssm4567-hifi", | |
381 | .playback = { | |
382 | .stream_name = "Playback", | |
383 | .channels_min = 1, | |
384 | .channels_max = 1, | |
385 | .rates = SNDRV_PCM_RATE_8000_192000, | |
386 | .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | | |
387 | SNDRV_PCM_FMTBIT_S32, | |
388 | }, | |
389 | .ops = &ssm4567_dai_ops, | |
390 | }; | |
391 | ||
392 | static struct snd_soc_codec_driver ssm4567_codec_driver = { | |
393 | .set_bias_level = ssm4567_set_bias_level, | |
394 | .idle_bias_off = true, | |
395 | ||
396 | .controls = ssm4567_snd_controls, | |
397 | .num_controls = ARRAY_SIZE(ssm4567_snd_controls), | |
398 | .dapm_widgets = ssm4567_dapm_widgets, | |
399 | .num_dapm_widgets = ARRAY_SIZE(ssm4567_dapm_widgets), | |
400 | .dapm_routes = ssm4567_routes, | |
401 | .num_dapm_routes = ARRAY_SIZE(ssm4567_routes), | |
402 | }; | |
403 | ||
404 | static const struct regmap_config ssm4567_regmap_config = { | |
405 | .val_bits = 8, | |
406 | .reg_bits = 8, | |
407 | ||
408 | .max_register = SSM4567_REG_SOFT_RESET, | |
409 | .readable_reg = ssm4567_readable_reg, | |
410 | .writeable_reg = ssm4567_writeable_reg, | |
411 | .volatile_reg = ssm4567_volatile_reg, | |
412 | ||
413 | .cache_type = REGCACHE_RBTREE, | |
414 | .reg_defaults = ssm4567_reg_defaults, | |
415 | .num_reg_defaults = ARRAY_SIZE(ssm4567_reg_defaults), | |
416 | }; | |
417 | ||
418 | static int ssm4567_i2c_probe(struct i2c_client *i2c, | |
419 | const struct i2c_device_id *id) | |
420 | { | |
421 | struct ssm4567 *ssm4567; | |
422 | int ret; | |
423 | ||
424 | ssm4567 = devm_kzalloc(&i2c->dev, sizeof(*ssm4567), GFP_KERNEL); | |
425 | if (ssm4567 == NULL) | |
426 | return -ENOMEM; | |
427 | ||
428 | i2c_set_clientdata(i2c, ssm4567); | |
429 | ||
430 | ssm4567->regmap = devm_regmap_init_i2c(i2c, &ssm4567_regmap_config); | |
431 | if (IS_ERR(ssm4567->regmap)) | |
432 | return PTR_ERR(ssm4567->regmap); | |
433 | ||
434 | ret = regmap_write(ssm4567->regmap, SSM4567_REG_SOFT_RESET, 0x00); | |
435 | if (ret) | |
436 | return ret; | |
437 | ||
438 | ret = ssm4567_set_power(ssm4567, false); | |
439 | if (ret) | |
440 | return ret; | |
441 | ||
442 | return snd_soc_register_codec(&i2c->dev, &ssm4567_codec_driver, | |
443 | &ssm4567_dai, 1); | |
444 | } | |
445 | ||
446 | static int ssm4567_i2c_remove(struct i2c_client *client) | |
447 | { | |
448 | snd_soc_unregister_codec(&client->dev); | |
449 | return 0; | |
450 | } | |
451 | ||
452 | static const struct i2c_device_id ssm4567_i2c_ids[] = { | |
453 | { "ssm4567", 0 }, | |
454 | { } | |
455 | }; | |
456 | MODULE_DEVICE_TABLE(i2c, ssm4567_i2c_ids); | |
457 | ||
458 | static struct i2c_driver ssm4567_driver = { | |
459 | .driver = { | |
460 | .name = "ssm4567", | |
461 | .owner = THIS_MODULE, | |
462 | }, | |
463 | .probe = ssm4567_i2c_probe, | |
464 | .remove = ssm4567_i2c_remove, | |
465 | .id_table = ssm4567_i2c_ids, | |
466 | }; | |
467 | module_i2c_driver(ssm4567_driver); | |
468 | ||
469 | MODULE_DESCRIPTION("ASoC SSM4567 driver"); | |
470 | MODULE_AUTHOR("Anatol Pomozov <anatol@chromium.org>"); | |
471 | MODULE_LICENSE("GPL"); |