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1 | /* |
2 | * ALSA SoC Texas Instruments TLV320DAC33 codec driver | |
3 | * | |
4 | * Author: Peter Ujfalusi <peter.ujfalusi@nokia.com> | |
5 | * | |
6 | * Copyright: (C) 2009 Nokia Corporation | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
20 | * 02110-1301 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/pm.h> | |
29 | #include <linux/i2c.h> | |
30 | #include <linux/platform_device.h> | |
31 | #include <linux/interrupt.h> | |
32 | #include <linux/gpio.h> | |
33 | #include <sound/core.h> | |
34 | #include <sound/pcm.h> | |
35 | #include <sound/pcm_params.h> | |
36 | #include <sound/soc.h> | |
37 | #include <sound/soc-dapm.h> | |
38 | #include <sound/initval.h> | |
39 | #include <sound/tlv.h> | |
40 | ||
41 | #include <sound/tlv320dac33-plat.h> | |
42 | #include "tlv320dac33.h" | |
43 | ||
44 | #define DAC33_BUFFER_SIZE_BYTES 24576 /* bytes, 12288 16 bit words, | |
45 | * 6144 stereo */ | |
46 | #define DAC33_BUFFER_SIZE_SAMPLES 6144 | |
47 | ||
48 | #define NSAMPLE_MAX 5700 | |
49 | ||
50 | #define LATENCY_TIME_MS 20 | |
51 | ||
52 | static struct snd_soc_codec *tlv320dac33_codec; | |
53 | ||
54 | enum dac33_state { | |
55 | DAC33_IDLE = 0, | |
56 | DAC33_PREFILL, | |
57 | DAC33_PLAYBACK, | |
58 | DAC33_FLUSH, | |
59 | }; | |
60 | ||
61 | struct tlv320dac33_priv { | |
62 | struct mutex mutex; | |
63 | struct workqueue_struct *dac33_wq; | |
64 | struct work_struct work; | |
65 | struct snd_soc_codec codec; | |
66 | int power_gpio; | |
67 | int chip_power; | |
68 | int irq; | |
69 | unsigned int refclk; | |
70 | ||
71 | unsigned int alarm_threshold; /* set to be half of LATENCY_TIME_MS */ | |
72 | unsigned int nsample_min; /* nsample should not be lower than | |
73 | * this */ | |
74 | unsigned int nsample_max; /* nsample should not be higher than | |
75 | * this */ | |
76 | unsigned int nsample_switch; /* Use FIFO or bypass FIFO switch */ | |
77 | unsigned int nsample; /* burst read amount from host */ | |
78 | ||
79 | enum dac33_state state; | |
80 | }; | |
81 | ||
82 | static const u8 dac33_reg[DAC33_CACHEREGNUM] = { | |
83 | 0x00, 0x00, 0x00, 0x00, /* 0x00 - 0x03 */ | |
84 | 0x00, 0x00, 0x00, 0x00, /* 0x04 - 0x07 */ | |
85 | 0x00, 0x00, 0x00, 0x00, /* 0x08 - 0x0b */ | |
86 | 0x00, 0x00, 0x00, 0x00, /* 0x0c - 0x0f */ | |
87 | 0x00, 0x00, 0x00, 0x00, /* 0x10 - 0x13 */ | |
88 | 0x00, 0x00, 0x00, 0x00, /* 0x14 - 0x17 */ | |
89 | 0x00, 0x00, 0x00, 0x00, /* 0x18 - 0x1b */ | |
90 | 0x00, 0x00, 0x00, 0x00, /* 0x1c - 0x1f */ | |
91 | 0x00, 0x00, 0x00, 0x00, /* 0x20 - 0x23 */ | |
92 | 0x00, 0x00, 0x00, 0x00, /* 0x24 - 0x27 */ | |
93 | 0x00, 0x00, 0x00, 0x00, /* 0x28 - 0x2b */ | |
94 | 0x00, 0x00, 0x00, 0x80, /* 0x2c - 0x2f */ | |
95 | 0x80, 0x00, 0x00, 0x00, /* 0x30 - 0x33 */ | |
96 | 0x00, 0x00, 0x00, 0x00, /* 0x34 - 0x37 */ | |
97 | 0x00, 0x00, /* 0x38 - 0x39 */ | |
98 | /* Registers 0x3a - 0x3f are reserved */ | |
99 | 0x00, 0x00, /* 0x3a - 0x3b */ | |
100 | 0x00, 0x00, 0x00, 0x00, /* 0x3c - 0x3f */ | |
101 | ||
102 | 0x00, 0x00, 0x00, 0x00, /* 0x40 - 0x43 */ | |
103 | 0x00, 0x80, /* 0x44 - 0x45 */ | |
104 | /* Registers 0x46 - 0x47 are reserved */ | |
105 | 0x80, 0x80, /* 0x46 - 0x47 */ | |
106 | ||
107 | 0x80, 0x00, 0x00, /* 0x48 - 0x4a */ | |
108 | /* Registers 0x4b - 0x7c are reserved */ | |
109 | 0x00, /* 0x4b */ | |
110 | 0x00, 0x00, 0x00, 0x00, /* 0x4c - 0x4f */ | |
111 | 0x00, 0x00, 0x00, 0x00, /* 0x50 - 0x53 */ | |
112 | 0x00, 0x00, 0x00, 0x00, /* 0x54 - 0x57 */ | |
113 | 0x00, 0x00, 0x00, 0x00, /* 0x58 - 0x5b */ | |
114 | 0x00, 0x00, 0x00, 0x00, /* 0x5c - 0x5f */ | |
115 | 0x00, 0x00, 0x00, 0x00, /* 0x60 - 0x63 */ | |
116 | 0x00, 0x00, 0x00, 0x00, /* 0x64 - 0x67 */ | |
117 | 0x00, 0x00, 0x00, 0x00, /* 0x68 - 0x6b */ | |
118 | 0x00, 0x00, 0x00, 0x00, /* 0x6c - 0x6f */ | |
119 | 0x00, 0x00, 0x00, 0x00, /* 0x70 - 0x73 */ | |
120 | 0x00, 0x00, 0x00, 0x00, /* 0x74 - 0x77 */ | |
121 | 0x00, 0x00, 0x00, 0x00, /* 0x78 - 0x7b */ | |
122 | 0x00, /* 0x7c */ | |
123 | ||
124 | 0xda, 0x33, 0x03, /* 0x7d - 0x7f */ | |
125 | }; | |
126 | ||
127 | /* Register read and write */ | |
128 | static inline unsigned int dac33_read_reg_cache(struct snd_soc_codec *codec, | |
129 | unsigned reg) | |
130 | { | |
131 | u8 *cache = codec->reg_cache; | |
132 | if (reg >= DAC33_CACHEREGNUM) | |
133 | return 0; | |
134 | ||
135 | return cache[reg]; | |
136 | } | |
137 | ||
138 | static inline void dac33_write_reg_cache(struct snd_soc_codec *codec, | |
139 | u8 reg, u8 value) | |
140 | { | |
141 | u8 *cache = codec->reg_cache; | |
142 | if (reg >= DAC33_CACHEREGNUM) | |
143 | return; | |
144 | ||
145 | cache[reg] = value; | |
146 | } | |
147 | ||
148 | static int dac33_read(struct snd_soc_codec *codec, unsigned int reg, | |
149 | u8 *value) | |
150 | { | |
151 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
152 | int val; | |
153 | ||
154 | *value = reg & 0xff; | |
155 | ||
156 | /* If powered off, return the cached value */ | |
157 | if (dac33->chip_power) { | |
158 | val = i2c_smbus_read_byte_data(codec->control_data, value[0]); | |
159 | if (val < 0) { | |
160 | dev_err(codec->dev, "Read failed (%d)\n", val); | |
161 | value[0] = dac33_read_reg_cache(codec, reg); | |
162 | } else { | |
163 | value[0] = val; | |
164 | dac33_write_reg_cache(codec, reg, val); | |
165 | } | |
166 | } else { | |
167 | value[0] = dac33_read_reg_cache(codec, reg); | |
168 | } | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
173 | static int dac33_write(struct snd_soc_codec *codec, unsigned int reg, | |
174 | unsigned int value) | |
175 | { | |
176 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
177 | u8 data[2]; | |
178 | int ret = 0; | |
179 | ||
180 | /* | |
181 | * data is | |
182 | * D15..D8 dac33 register offset | |
183 | * D7...D0 register data | |
184 | */ | |
185 | data[0] = reg & 0xff; | |
186 | data[1] = value & 0xff; | |
187 | ||
188 | dac33_write_reg_cache(codec, data[0], data[1]); | |
189 | if (dac33->chip_power) { | |
190 | ret = codec->hw_write(codec->control_data, data, 2); | |
191 | if (ret != 2) | |
192 | dev_err(codec->dev, "Write failed (%d)\n", ret); | |
193 | else | |
194 | ret = 0; | |
195 | } | |
196 | ||
197 | return ret; | |
198 | } | |
199 | ||
200 | static int dac33_write_locked(struct snd_soc_codec *codec, unsigned int reg, | |
201 | unsigned int value) | |
202 | { | |
203 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
204 | int ret; | |
205 | ||
206 | mutex_lock(&dac33->mutex); | |
207 | ret = dac33_write(codec, reg, value); | |
208 | mutex_unlock(&dac33->mutex); | |
209 | ||
210 | return ret; | |
211 | } | |
212 | ||
213 | #define DAC33_I2C_ADDR_AUTOINC 0x80 | |
214 | static int dac33_write16(struct snd_soc_codec *codec, unsigned int reg, | |
215 | unsigned int value) | |
216 | { | |
217 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
218 | u8 data[3]; | |
219 | int ret = 0; | |
220 | ||
221 | /* | |
222 | * data is | |
223 | * D23..D16 dac33 register offset | |
224 | * D15..D8 register data MSB | |
225 | * D7...D0 register data LSB | |
226 | */ | |
227 | data[0] = reg & 0xff; | |
228 | data[1] = (value >> 8) & 0xff; | |
229 | data[2] = value & 0xff; | |
230 | ||
231 | dac33_write_reg_cache(codec, data[0], data[1]); | |
232 | dac33_write_reg_cache(codec, data[0] + 1, data[2]); | |
233 | ||
234 | if (dac33->chip_power) { | |
235 | /* We need to set autoincrement mode for 16 bit writes */ | |
236 | data[0] |= DAC33_I2C_ADDR_AUTOINC; | |
237 | ret = codec->hw_write(codec->control_data, data, 3); | |
238 | if (ret != 3) | |
239 | dev_err(codec->dev, "Write failed (%d)\n", ret); | |
240 | else | |
241 | ret = 0; | |
242 | } | |
243 | ||
244 | return ret; | |
245 | } | |
246 | ||
247 | static void dac33_restore_regs(struct snd_soc_codec *codec) | |
248 | { | |
249 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
250 | u8 *cache = codec->reg_cache; | |
251 | u8 data[2]; | |
252 | int i, ret; | |
253 | ||
254 | if (!dac33->chip_power) | |
255 | return; | |
256 | ||
257 | for (i = DAC33_PWR_CTRL; i <= DAC33_INTP_CTRL_B; i++) { | |
258 | data[0] = i; | |
259 | data[1] = cache[i]; | |
260 | /* Skip the read only registers */ | |
261 | if ((i >= DAC33_INT_OSC_STATUS && | |
262 | i <= DAC33_INT_OSC_FREQ_RAT_READ_B) || | |
263 | (i >= DAC33_FIFO_WPTR_MSB && i <= DAC33_FIFO_IRQ_FLAG) || | |
264 | i == DAC33_DAC_STATUS_FLAGS || | |
265 | i == DAC33_SRC_EST_REF_CLK_RATIO_A || | |
266 | i == DAC33_SRC_EST_REF_CLK_RATIO_B) | |
267 | continue; | |
268 | ret = codec->hw_write(codec->control_data, data, 2); | |
269 | if (ret != 2) | |
270 | dev_err(codec->dev, "Write failed (%d)\n", ret); | |
271 | } | |
272 | for (i = DAC33_LDAC_PWR_CTRL; i <= DAC33_LINEL_TO_LLO_VOL; i++) { | |
273 | data[0] = i; | |
274 | data[1] = cache[i]; | |
275 | ret = codec->hw_write(codec->control_data, data, 2); | |
276 | if (ret != 2) | |
277 | dev_err(codec->dev, "Write failed (%d)\n", ret); | |
278 | } | |
279 | for (i = DAC33_LINER_TO_RLO_VOL; i <= DAC33_OSC_TRIM; i++) { | |
280 | data[0] = i; | |
281 | data[1] = cache[i]; | |
282 | ret = codec->hw_write(codec->control_data, data, 2); | |
283 | if (ret != 2) | |
284 | dev_err(codec->dev, "Write failed (%d)\n", ret); | |
285 | } | |
286 | } | |
287 | ||
288 | static inline void dac33_soft_power(struct snd_soc_codec *codec, int power) | |
289 | { | |
290 | u8 reg; | |
291 | ||
292 | reg = dac33_read_reg_cache(codec, DAC33_PWR_CTRL); | |
293 | if (power) | |
294 | reg |= DAC33_PDNALLB; | |
295 | else | |
296 | reg &= ~DAC33_PDNALLB; | |
297 | dac33_write(codec, DAC33_PWR_CTRL, reg); | |
298 | } | |
299 | ||
300 | static void dac33_hard_power(struct snd_soc_codec *codec, int power) | |
301 | { | |
302 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
303 | ||
304 | mutex_lock(&dac33->mutex); | |
305 | if (power) { | |
306 | if (dac33->power_gpio >= 0) { | |
307 | gpio_set_value(dac33->power_gpio, 1); | |
308 | dac33->chip_power = 1; | |
309 | /* Restore registers */ | |
310 | dac33_restore_regs(codec); | |
311 | } | |
312 | dac33_soft_power(codec, 1); | |
313 | } else { | |
314 | dac33_soft_power(codec, 0); | |
315 | if (dac33->power_gpio >= 0) { | |
316 | gpio_set_value(dac33->power_gpio, 0); | |
317 | dac33->chip_power = 0; | |
318 | } | |
319 | } | |
320 | mutex_unlock(&dac33->mutex); | |
321 | ||
322 | } | |
323 | ||
324 | static int dac33_get_nsample(struct snd_kcontrol *kcontrol, | |
325 | struct snd_ctl_elem_value *ucontrol) | |
326 | { | |
327 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
328 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
329 | ||
330 | ucontrol->value.integer.value[0] = dac33->nsample; | |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
335 | static int dac33_set_nsample(struct snd_kcontrol *kcontrol, | |
336 | struct snd_ctl_elem_value *ucontrol) | |
337 | { | |
338 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
339 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
340 | int ret = 0; | |
341 | ||
342 | if (dac33->nsample == ucontrol->value.integer.value[0]) | |
343 | return 0; | |
344 | ||
345 | if (ucontrol->value.integer.value[0] < dac33->nsample_min || | |
346 | ucontrol->value.integer.value[0] > dac33->nsample_max) | |
347 | ret = -EINVAL; | |
348 | else | |
349 | dac33->nsample = ucontrol->value.integer.value[0]; | |
350 | ||
351 | return ret; | |
352 | } | |
353 | ||
354 | static int dac33_get_nsample_switch(struct snd_kcontrol *kcontrol, | |
355 | struct snd_ctl_elem_value *ucontrol) | |
356 | { | |
357 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
358 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
359 | ||
360 | ucontrol->value.integer.value[0] = dac33->nsample_switch; | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | static int dac33_set_nsample_switch(struct snd_kcontrol *kcontrol, | |
366 | struct snd_ctl_elem_value *ucontrol) | |
367 | { | |
368 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
369 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
370 | int ret = 0; | |
371 | ||
372 | if (dac33->nsample_switch == ucontrol->value.integer.value[0]) | |
373 | return 0; | |
374 | /* Do not allow changes while stream is running*/ | |
375 | if (codec->active) | |
376 | return -EPERM; | |
377 | ||
378 | if (ucontrol->value.integer.value[0] < 0 || | |
379 | ucontrol->value.integer.value[0] > 1) | |
380 | ret = -EINVAL; | |
381 | else | |
382 | dac33->nsample_switch = ucontrol->value.integer.value[0]; | |
383 | ||
384 | return ret; | |
385 | } | |
386 | ||
387 | /* | |
388 | * DACL/R digital volume control: | |
389 | * from 0 dB to -63.5 in 0.5 dB steps | |
390 | * Need to be inverted later on: | |
391 | * 0x00 == 0 dB | |
392 | * 0x7f == -63.5 dB | |
393 | */ | |
394 | static DECLARE_TLV_DB_SCALE(dac_digivol_tlv, -6350, 50, 0); | |
395 | ||
396 | static const struct snd_kcontrol_new dac33_snd_controls[] = { | |
397 | SOC_DOUBLE_R_TLV("DAC Digital Playback Volume", | |
398 | DAC33_LDAC_DIG_VOL_CTRL, DAC33_RDAC_DIG_VOL_CTRL, | |
399 | 0, 0x7f, 1, dac_digivol_tlv), | |
400 | SOC_DOUBLE_R("DAC Digital Playback Switch", | |
401 | DAC33_LDAC_DIG_VOL_CTRL, DAC33_RDAC_DIG_VOL_CTRL, 7, 1, 1), | |
402 | SOC_DOUBLE_R("Line to Line Out Volume", | |
403 | DAC33_LINEL_TO_LLO_VOL, DAC33_LINER_TO_RLO_VOL, 0, 127, 1), | |
404 | }; | |
405 | ||
406 | static const struct snd_kcontrol_new dac33_nsample_snd_controls[] = { | |
407 | SOC_SINGLE_EXT("nSample", 0, 0, 5900, 0, | |
408 | dac33_get_nsample, dac33_set_nsample), | |
409 | SOC_SINGLE_EXT("nSample Switch", 0, 0, 1, 0, | |
410 | dac33_get_nsample_switch, dac33_set_nsample_switch), | |
411 | }; | |
412 | ||
413 | /* Analog bypass */ | |
414 | static const struct snd_kcontrol_new dac33_dapm_abypassl_control = | |
415 | SOC_DAPM_SINGLE("Switch", DAC33_LINEL_TO_LLO_VOL, 7, 1, 1); | |
416 | ||
417 | static const struct snd_kcontrol_new dac33_dapm_abypassr_control = | |
418 | SOC_DAPM_SINGLE("Switch", DAC33_LINER_TO_RLO_VOL, 7, 1, 1); | |
419 | ||
420 | static const struct snd_soc_dapm_widget dac33_dapm_widgets[] = { | |
421 | SND_SOC_DAPM_OUTPUT("LEFT_LO"), | |
422 | SND_SOC_DAPM_OUTPUT("RIGHT_LO"), | |
423 | ||
424 | SND_SOC_DAPM_INPUT("LINEL"), | |
425 | SND_SOC_DAPM_INPUT("LINER"), | |
426 | ||
427 | SND_SOC_DAPM_DAC("DACL", "Left Playback", DAC33_LDAC_PWR_CTRL, 2, 0), | |
428 | SND_SOC_DAPM_DAC("DACR", "Right Playback", DAC33_RDAC_PWR_CTRL, 2, 0), | |
429 | ||
430 | /* Analog bypass */ | |
431 | SND_SOC_DAPM_SWITCH("Analog Left Bypass", SND_SOC_NOPM, 0, 0, | |
432 | &dac33_dapm_abypassl_control), | |
433 | SND_SOC_DAPM_SWITCH("Analog Right Bypass", SND_SOC_NOPM, 0, 0, | |
434 | &dac33_dapm_abypassr_control), | |
435 | ||
436 | SND_SOC_DAPM_REG(snd_soc_dapm_mixer, "Output Left Amp Power", | |
437 | DAC33_OUT_AMP_PWR_CTRL, 6, 3, 3, 0), | |
438 | SND_SOC_DAPM_REG(snd_soc_dapm_mixer, "Output Right Amp Power", | |
439 | DAC33_OUT_AMP_PWR_CTRL, 4, 3, 3, 0), | |
440 | }; | |
441 | ||
442 | static const struct snd_soc_dapm_route audio_map[] = { | |
443 | /* Analog bypass */ | |
444 | {"Analog Left Bypass", "Switch", "LINEL"}, | |
445 | {"Analog Right Bypass", "Switch", "LINER"}, | |
446 | ||
447 | {"Output Left Amp Power", NULL, "DACL"}, | |
448 | {"Output Right Amp Power", NULL, "DACR"}, | |
449 | ||
450 | {"Output Left Amp Power", NULL, "Analog Left Bypass"}, | |
451 | {"Output Right Amp Power", NULL, "Analog Right Bypass"}, | |
452 | ||
453 | /* output */ | |
454 | {"LEFT_LO", NULL, "Output Left Amp Power"}, | |
455 | {"RIGHT_LO", NULL, "Output Right Amp Power"}, | |
456 | }; | |
457 | ||
458 | static int dac33_add_widgets(struct snd_soc_codec *codec) | |
459 | { | |
460 | snd_soc_dapm_new_controls(codec, dac33_dapm_widgets, | |
461 | ARRAY_SIZE(dac33_dapm_widgets)); | |
462 | ||
463 | /* set up audio path interconnects */ | |
464 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
465 | snd_soc_dapm_new_widgets(codec); | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | static int dac33_set_bias_level(struct snd_soc_codec *codec, | |
471 | enum snd_soc_bias_level level) | |
472 | { | |
473 | switch (level) { | |
474 | case SND_SOC_BIAS_ON: | |
475 | dac33_soft_power(codec, 1); | |
476 | break; | |
477 | case SND_SOC_BIAS_PREPARE: | |
478 | break; | |
479 | case SND_SOC_BIAS_STANDBY: | |
480 | if (codec->bias_level == SND_SOC_BIAS_OFF) | |
481 | dac33_hard_power(codec, 1); | |
482 | dac33_soft_power(codec, 0); | |
483 | break; | |
484 | case SND_SOC_BIAS_OFF: | |
485 | dac33_hard_power(codec, 0); | |
486 | break; | |
487 | } | |
488 | codec->bias_level = level; | |
489 | ||
490 | return 0; | |
491 | } | |
492 | ||
493 | static void dac33_work(struct work_struct *work) | |
494 | { | |
495 | struct snd_soc_codec *codec; | |
496 | struct tlv320dac33_priv *dac33; | |
497 | u8 reg; | |
498 | ||
499 | dac33 = container_of(work, struct tlv320dac33_priv, work); | |
500 | codec = &dac33->codec; | |
501 | ||
502 | mutex_lock(&dac33->mutex); | |
503 | switch (dac33->state) { | |
504 | case DAC33_PREFILL: | |
505 | dac33->state = DAC33_PLAYBACK; | |
506 | dac33_write16(codec, DAC33_NSAMPLE_MSB, | |
507 | DAC33_THRREG(dac33->nsample)); | |
508 | dac33_write16(codec, DAC33_PREFILL_MSB, | |
509 | DAC33_THRREG(dac33->alarm_threshold)); | |
510 | break; | |
511 | case DAC33_PLAYBACK: | |
512 | dac33_write16(codec, DAC33_NSAMPLE_MSB, | |
513 | DAC33_THRREG(dac33->nsample)); | |
514 | break; | |
515 | case DAC33_IDLE: | |
516 | break; | |
517 | case DAC33_FLUSH: | |
518 | dac33->state = DAC33_IDLE; | |
519 | /* Mask all interrupts from dac33 */ | |
520 | dac33_write(codec, DAC33_FIFO_IRQ_MASK, 0); | |
521 | ||
522 | /* flush fifo */ | |
523 | reg = dac33_read_reg_cache(codec, DAC33_FIFO_CTRL_A); | |
524 | reg |= DAC33_FIFOFLUSH; | |
525 | dac33_write(codec, DAC33_FIFO_CTRL_A, reg); | |
526 | break; | |
527 | } | |
528 | mutex_unlock(&dac33->mutex); | |
529 | } | |
530 | ||
531 | static irqreturn_t dac33_interrupt_handler(int irq, void *dev) | |
532 | { | |
533 | struct snd_soc_codec *codec = dev; | |
534 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
535 | ||
536 | queue_work(dac33->dac33_wq, &dac33->work); | |
537 | ||
538 | return IRQ_HANDLED; | |
539 | } | |
540 | ||
541 | static void dac33_shutdown(struct snd_pcm_substream *substream, | |
542 | struct snd_soc_dai *dai) | |
543 | { | |
544 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
545 | struct snd_soc_device *socdev = rtd->socdev; | |
546 | struct snd_soc_codec *codec = socdev->card->codec; | |
547 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
548 | unsigned int pwr_ctrl; | |
549 | ||
550 | /* Stop pending workqueue */ | |
551 | if (dac33->nsample_switch) | |
552 | cancel_work_sync(&dac33->work); | |
553 | ||
554 | mutex_lock(&dac33->mutex); | |
555 | pwr_ctrl = dac33_read_reg_cache(codec, DAC33_PWR_CTRL); | |
556 | pwr_ctrl &= ~(DAC33_OSCPDNB | DAC33_DACRPDNB | DAC33_DACLPDNB); | |
557 | dac33_write(codec, DAC33_PWR_CTRL, pwr_ctrl); | |
558 | mutex_unlock(&dac33->mutex); | |
559 | } | |
560 | ||
561 | static void dac33_oscwait(struct snd_soc_codec *codec) | |
562 | { | |
563 | int timeout = 20; | |
564 | u8 reg; | |
565 | ||
566 | do { | |
567 | msleep(1); | |
568 | dac33_read(codec, DAC33_INT_OSC_STATUS, ®); | |
569 | } while (((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) && timeout--); | |
570 | if ((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) | |
571 | dev_err(codec->dev, | |
572 | "internal oscillator calibration failed\n"); | |
573 | } | |
574 | ||
575 | static int dac33_hw_params(struct snd_pcm_substream *substream, | |
576 | struct snd_pcm_hw_params *params, | |
577 | struct snd_soc_dai *dai) | |
578 | { | |
579 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
580 | struct snd_soc_device *socdev = rtd->socdev; | |
581 | struct snd_soc_codec *codec = socdev->card->codec; | |
582 | ||
583 | /* Check parameters for validity */ | |
584 | switch (params_rate(params)) { | |
585 | case 44100: | |
586 | case 48000: | |
587 | break; | |
588 | default: | |
589 | dev_err(codec->dev, "unsupported rate %d\n", | |
590 | params_rate(params)); | |
591 | return -EINVAL; | |
592 | } | |
593 | ||
594 | switch (params_format(params)) { | |
595 | case SNDRV_PCM_FORMAT_S16_LE: | |
596 | break; | |
597 | default: | |
598 | dev_err(codec->dev, "unsupported format %d\n", | |
599 | params_format(params)); | |
600 | return -EINVAL; | |
601 | } | |
602 | ||
603 | return 0; | |
604 | } | |
605 | ||
606 | #define CALC_OSCSET(rate, refclk) ( \ | |
607 | ((((rate * 10000) / refclk) * 4096) + 5000) / 10000) | |
608 | #define CALC_RATIOSET(rate, refclk) ( \ | |
609 | ((((refclk * 100000) / rate) * 16384) + 50000) / 100000) | |
610 | ||
611 | /* | |
612 | * tlv320dac33 is strict on the sequence of the register writes, if the register | |
613 | * writes happens in different order, than dac33 might end up in unknown state. | |
614 | * Use the known, working sequence of register writes to initialize the dac33. | |
615 | */ | |
616 | static int dac33_prepare_chip(struct snd_pcm_substream *substream) | |
617 | { | |
618 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
619 | struct snd_soc_device *socdev = rtd->socdev; | |
620 | struct snd_soc_codec *codec = socdev->card->codec; | |
621 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
622 | unsigned int oscset, ratioset, pwr_ctrl, reg_tmp; | |
623 | u8 aictrl_a, fifoctrl_a; | |
624 | ||
625 | switch (substream->runtime->rate) { | |
626 | case 44100: | |
627 | case 48000: | |
628 | oscset = CALC_OSCSET(substream->runtime->rate, dac33->refclk); | |
629 | ratioset = CALC_RATIOSET(substream->runtime->rate, | |
630 | dac33->refclk); | |
631 | break; | |
632 | default: | |
633 | dev_err(codec->dev, "unsupported rate %d\n", | |
634 | substream->runtime->rate); | |
635 | return -EINVAL; | |
636 | } | |
637 | ||
638 | ||
639 | aictrl_a = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A); | |
640 | aictrl_a &= ~(DAC33_NCYCL_MASK | DAC33_WLEN_MASK); | |
641 | fifoctrl_a = dac33_read_reg_cache(codec, DAC33_FIFO_CTRL_A); | |
642 | fifoctrl_a &= ~DAC33_WIDTH; | |
643 | switch (substream->runtime->format) { | |
644 | case SNDRV_PCM_FORMAT_S16_LE: | |
645 | aictrl_a |= (DAC33_NCYCL_16 | DAC33_WLEN_16); | |
646 | fifoctrl_a |= DAC33_WIDTH; | |
647 | break; | |
648 | default: | |
649 | dev_err(codec->dev, "unsupported format %d\n", | |
650 | substream->runtime->format); | |
651 | return -EINVAL; | |
652 | } | |
653 | ||
654 | mutex_lock(&dac33->mutex); | |
655 | dac33_soft_power(codec, 1); | |
656 | ||
657 | reg_tmp = dac33_read_reg_cache(codec, DAC33_INT_OSC_CTRL); | |
658 | dac33_write(codec, DAC33_INT_OSC_CTRL, reg_tmp); | |
659 | ||
660 | /* Write registers 0x08 and 0x09 (MSB, LSB) */ | |
661 | dac33_write16(codec, DAC33_INT_OSC_FREQ_RAT_A, oscset); | |
662 | ||
663 | /* calib time: 128 is a nice number ;) */ | |
664 | dac33_write(codec, DAC33_CALIB_TIME, 128); | |
665 | ||
666 | /* adjustment treshold & step */ | |
667 | dac33_write(codec, DAC33_INT_OSC_CTRL_B, DAC33_ADJTHRSHLD(2) | | |
668 | DAC33_ADJSTEP(1)); | |
669 | ||
670 | /* div=4 / gain=1 / div */ | |
671 | dac33_write(codec, DAC33_INT_OSC_CTRL_C, DAC33_REFDIV(4)); | |
672 | ||
673 | pwr_ctrl = dac33_read_reg_cache(codec, DAC33_PWR_CTRL); | |
674 | pwr_ctrl |= DAC33_OSCPDNB | DAC33_DACRPDNB | DAC33_DACLPDNB; | |
675 | dac33_write(codec, DAC33_PWR_CTRL, pwr_ctrl); | |
676 | ||
677 | dac33_oscwait(codec); | |
678 | ||
679 | if (dac33->nsample_switch) { | |
680 | /* 50-51 : ASRC Control registers */ | |
681 | dac33_write(codec, DAC33_ASRC_CTRL_A, (1 << 4)); /* div=2 */ | |
682 | dac33_write(codec, DAC33_ASRC_CTRL_B, 1); /* ??? */ | |
683 | ||
684 | /* Write registers 0x34 and 0x35 (MSB, LSB) */ | |
685 | dac33_write16(codec, DAC33_SRC_REF_CLK_RATIO_A, ratioset); | |
686 | ||
687 | /* Set interrupts to high active */ | |
688 | dac33_write(codec, DAC33_INTP_CTRL_A, DAC33_INTPM_AHIGH); | |
689 | ||
690 | dac33_write(codec, DAC33_FIFO_IRQ_MODE_B, | |
691 | DAC33_ATM(DAC33_FIFO_IRQ_MODE_LEVEL)); | |
692 | dac33_write(codec, DAC33_FIFO_IRQ_MASK, DAC33_MAT); | |
693 | } else { | |
694 | /* 50-51 : ASRC Control registers */ | |
695 | dac33_write(codec, DAC33_ASRC_CTRL_A, DAC33_SRCBYP); | |
696 | dac33_write(codec, DAC33_ASRC_CTRL_B, 0); /* ??? */ | |
697 | } | |
698 | ||
699 | if (dac33->nsample_switch) | |
700 | fifoctrl_a &= ~DAC33_FBYPAS; | |
701 | else | |
702 | fifoctrl_a |= DAC33_FBYPAS; | |
703 | dac33_write(codec, DAC33_FIFO_CTRL_A, fifoctrl_a); | |
704 | ||
705 | dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a); | |
706 | reg_tmp = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B); | |
707 | if (dac33->nsample_switch) | |
708 | reg_tmp &= ~DAC33_BCLKON; | |
709 | else | |
710 | reg_tmp |= DAC33_BCLKON; | |
711 | dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_B, reg_tmp); | |
712 | ||
713 | if (dac33->nsample_switch) { | |
714 | /* 20: BCLK divide ratio */ | |
715 | dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, 3); | |
716 | ||
717 | dac33_write16(codec, DAC33_ATHR_MSB, | |
718 | DAC33_THRREG(dac33->alarm_threshold)); | |
719 | } else { | |
720 | dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, 32); | |
721 | } | |
722 | ||
723 | mutex_unlock(&dac33->mutex); | |
724 | ||
725 | return 0; | |
726 | } | |
727 | ||
728 | static void dac33_calculate_times(struct snd_pcm_substream *substream) | |
729 | { | |
730 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
731 | struct snd_soc_device *socdev = rtd->socdev; | |
732 | struct snd_soc_codec *codec = socdev->card->codec; | |
733 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
734 | unsigned int nsample_limit; | |
735 | ||
736 | /* Number of samples (16bit, stereo) in one period */ | |
737 | dac33->nsample_min = snd_pcm_lib_period_bytes(substream) / 4; | |
738 | ||
739 | /* Number of samples (16bit, stereo) in ALSA buffer */ | |
740 | dac33->nsample_max = snd_pcm_lib_buffer_bytes(substream) / 4; | |
741 | /* Subtract one period from the total */ | |
742 | dac33->nsample_max -= dac33->nsample_min; | |
743 | ||
744 | /* Number of samples for LATENCY_TIME_MS / 2 */ | |
745 | dac33->alarm_threshold = substream->runtime->rate / | |
746 | (1000 / (LATENCY_TIME_MS / 2)); | |
747 | ||
748 | /* Find and fix up the lowest nsmaple limit */ | |
749 | nsample_limit = substream->runtime->rate / (1000 / LATENCY_TIME_MS); | |
750 | ||
751 | if (dac33->nsample_min < nsample_limit) | |
752 | dac33->nsample_min = nsample_limit; | |
753 | ||
754 | if (dac33->nsample < dac33->nsample_min) | |
755 | dac33->nsample = dac33->nsample_min; | |
756 | ||
757 | /* | |
758 | * Find and fix up the highest nsmaple limit | |
759 | * In order to not overflow the DAC33 buffer substract the | |
760 | * alarm_threshold value from the size of the DAC33 buffer | |
761 | */ | |
762 | nsample_limit = DAC33_BUFFER_SIZE_SAMPLES - dac33->alarm_threshold; | |
763 | ||
764 | if (dac33->nsample_max > nsample_limit) | |
765 | dac33->nsample_max = nsample_limit; | |
766 | ||
767 | if (dac33->nsample > dac33->nsample_max) | |
768 | dac33->nsample = dac33->nsample_max; | |
769 | } | |
770 | ||
771 | static int dac33_pcm_prepare(struct snd_pcm_substream *substream, | |
772 | struct snd_soc_dai *dai) | |
773 | { | |
774 | dac33_calculate_times(substream); | |
775 | dac33_prepare_chip(substream); | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
780 | static int dac33_pcm_trigger(struct snd_pcm_substream *substream, int cmd, | |
781 | struct snd_soc_dai *dai) | |
782 | { | |
783 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
784 | struct snd_soc_device *socdev = rtd->socdev; | |
785 | struct snd_soc_codec *codec = socdev->card->codec; | |
786 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
787 | int ret = 0; | |
788 | ||
789 | switch (cmd) { | |
790 | case SNDRV_PCM_TRIGGER_START: | |
791 | case SNDRV_PCM_TRIGGER_RESUME: | |
792 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
793 | if (dac33->nsample_switch) { | |
794 | dac33->state = DAC33_PREFILL; | |
795 | queue_work(dac33->dac33_wq, &dac33->work); | |
796 | } | |
797 | break; | |
798 | case SNDRV_PCM_TRIGGER_STOP: | |
799 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
800 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
801 | if (dac33->nsample_switch) { | |
802 | dac33->state = DAC33_FLUSH; | |
803 | queue_work(dac33->dac33_wq, &dac33->work); | |
804 | } | |
805 | break; | |
806 | default: | |
807 | ret = -EINVAL; | |
808 | } | |
809 | ||
810 | return ret; | |
811 | } | |
812 | ||
813 | static int dac33_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
814 | int clk_id, unsigned int freq, int dir) | |
815 | { | |
816 | struct snd_soc_codec *codec = codec_dai->codec; | |
817 | struct tlv320dac33_priv *dac33 = codec->private_data; | |
818 | u8 ioc_reg, asrcb_reg; | |
819 | ||
820 | ioc_reg = dac33_read_reg_cache(codec, DAC33_INT_OSC_CTRL); | |
821 | asrcb_reg = dac33_read_reg_cache(codec, DAC33_ASRC_CTRL_B); | |
822 | switch (clk_id) { | |
823 | case TLV320DAC33_MCLK: | |
824 | ioc_reg |= DAC33_REFSEL; | |
825 | asrcb_reg |= DAC33_SRCREFSEL; | |
826 | break; | |
827 | case TLV320DAC33_SLEEPCLK: | |
828 | ioc_reg &= ~DAC33_REFSEL; | |
829 | asrcb_reg &= ~DAC33_SRCREFSEL; | |
830 | break; | |
831 | default: | |
832 | dev_err(codec->dev, "Invalid clock ID (%d)\n", clk_id); | |
833 | break; | |
834 | } | |
835 | dac33->refclk = freq; | |
836 | ||
837 | dac33_write_reg_cache(codec, DAC33_INT_OSC_CTRL, ioc_reg); | |
838 | dac33_write_reg_cache(codec, DAC33_ASRC_CTRL_B, asrcb_reg); | |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
843 | static int dac33_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
844 | unsigned int fmt) | |
845 | { | |
846 | struct snd_soc_codec *codec = codec_dai->codec; | |
847 | u8 aictrl_a, aictrl_b; | |
848 | ||
849 | aictrl_a = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A); | |
850 | aictrl_b = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B); | |
851 | /* set master/slave audio interface */ | |
852 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
853 | case SND_SOC_DAIFMT_CBM_CFM: | |
854 | /* Codec Master */ | |
855 | aictrl_a |= (DAC33_MSBCLK | DAC33_MSWCLK); | |
856 | break; | |
857 | case SND_SOC_DAIFMT_CBS_CFS: | |
858 | /* Codec Slave */ | |
859 | aictrl_a &= ~(DAC33_MSBCLK | DAC33_MSWCLK); | |
860 | break; | |
861 | default: | |
862 | return -EINVAL; | |
863 | } | |
864 | ||
865 | aictrl_a &= ~DAC33_AFMT_MASK; | |
866 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
867 | case SND_SOC_DAIFMT_I2S: | |
868 | aictrl_a |= DAC33_AFMT_I2S; | |
869 | break; | |
870 | case SND_SOC_DAIFMT_DSP_A: | |
871 | aictrl_a |= DAC33_AFMT_DSP; | |
872 | aictrl_b &= ~DAC33_DATA_DELAY_MASK; | |
873 | aictrl_b |= DAC33_DATA_DELAY(1); /* 1 bit delay */ | |
874 | break; | |
875 | case SND_SOC_DAIFMT_DSP_B: | |
876 | aictrl_a |= DAC33_AFMT_DSP; | |
877 | aictrl_b &= ~DAC33_DATA_DELAY_MASK; /* No delay */ | |
878 | break; | |
879 | case SND_SOC_DAIFMT_RIGHT_J: | |
880 | aictrl_a |= DAC33_AFMT_RIGHT_J; | |
881 | break; | |
882 | case SND_SOC_DAIFMT_LEFT_J: | |
883 | aictrl_a |= DAC33_AFMT_LEFT_J; | |
884 | break; | |
885 | default: | |
886 | dev_err(codec->dev, "Unsupported format (%u)\n", | |
887 | fmt & SND_SOC_DAIFMT_FORMAT_MASK); | |
888 | return -EINVAL; | |
889 | } | |
890 | ||
891 | dac33_write_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a); | |
892 | dac33_write_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B, aictrl_b); | |
893 | ||
894 | return 0; | |
895 | } | |
896 | ||
897 | static void dac33_init_chip(struct snd_soc_codec *codec) | |
898 | { | |
899 | /* 44-46: DAC Control Registers */ | |
900 | /* A : DAC sample rate Fsref/1.5 */ | |
901 | dac33_write(codec, DAC33_DAC_CTRL_A, DAC33_DACRATE(1)); | |
902 | /* B : DAC src=normal, not muted */ | |
903 | dac33_write(codec, DAC33_DAC_CTRL_B, DAC33_DACSRCR_RIGHT | | |
904 | DAC33_DACSRCL_LEFT); | |
905 | /* C : (defaults) */ | |
906 | dac33_write(codec, DAC33_DAC_CTRL_C, 0x00); | |
907 | ||
908 | /* 64-65 : L&R DAC power control | |
909 | Line In -> OUT 1V/V Gain, DAC -> OUT 4V/V Gain*/ | |
910 | dac33_write(codec, DAC33_LDAC_PWR_CTRL, DAC33_LROUT_GAIN(2)); | |
911 | dac33_write(codec, DAC33_RDAC_PWR_CTRL, DAC33_LROUT_GAIN(2)); | |
912 | ||
913 | /* 73 : volume soft stepping control, | |
914 | clock source = internal osc (?) */ | |
915 | dac33_write(codec, DAC33_ANA_VOL_SOFT_STEP_CTRL, DAC33_VOLCLKEN); | |
916 | ||
917 | /* 66 : LOP/LOM Modes */ | |
918 | dac33_write(codec, DAC33_OUT_AMP_CM_CTRL, 0xff); | |
919 | ||
920 | /* 68 : LOM inverted from LOP */ | |
921 | dac33_write(codec, DAC33_OUT_AMP_CTRL, (3<<2)); | |
922 | ||
923 | dac33_write(codec, DAC33_PWR_CTRL, DAC33_PDNALLB); | |
924 | } | |
925 | ||
926 | static int dac33_soc_probe(struct platform_device *pdev) | |
927 | { | |
928 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
929 | struct snd_soc_codec *codec; | |
930 | struct tlv320dac33_priv *dac33; | |
931 | int ret = 0; | |
932 | ||
933 | BUG_ON(!tlv320dac33_codec); | |
934 | ||
935 | codec = tlv320dac33_codec; | |
936 | socdev->card->codec = codec; | |
937 | dac33 = codec->private_data; | |
938 | ||
939 | /* Power up the codec */ | |
940 | dac33_hard_power(codec, 1); | |
941 | /* Set default configuration */ | |
942 | dac33_init_chip(codec); | |
943 | ||
944 | /* register pcms */ | |
945 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
946 | if (ret < 0) { | |
947 | dev_err(codec->dev, "failed to create pcms\n"); | |
948 | goto pcm_err; | |
949 | } | |
950 | ||
951 | snd_soc_add_controls(codec, dac33_snd_controls, | |
952 | ARRAY_SIZE(dac33_snd_controls)); | |
953 | /* Only add the nSample controls, if we have valid IRQ number */ | |
954 | if (dac33->irq >= 0) | |
955 | snd_soc_add_controls(codec, dac33_nsample_snd_controls, | |
956 | ARRAY_SIZE(dac33_nsample_snd_controls)); | |
957 | ||
958 | dac33_add_widgets(codec); | |
959 | ||
960 | /* power on device */ | |
961 | dac33_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
962 | ||
963 | ret = snd_soc_init_card(socdev); | |
964 | if (ret < 0) { | |
965 | dev_err(codec->dev, "failed to register card\n"); | |
966 | goto card_err; | |
967 | } | |
968 | ||
969 | return 0; | |
970 | card_err: | |
971 | snd_soc_free_pcms(socdev); | |
972 | snd_soc_dapm_free(socdev); | |
973 | pcm_err: | |
974 | dac33_hard_power(codec, 0); | |
975 | return ret; | |
976 | } | |
977 | ||
978 | static int dac33_soc_remove(struct platform_device *pdev) | |
979 | { | |
980 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
981 | struct snd_soc_codec *codec = socdev->card->codec; | |
982 | ||
983 | dac33_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
984 | ||
985 | snd_soc_free_pcms(socdev); | |
986 | snd_soc_dapm_free(socdev); | |
987 | ||
988 | return 0; | |
989 | } | |
990 | ||
991 | static int dac33_soc_suspend(struct platform_device *pdev, pm_message_t state) | |
992 | { | |
993 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
994 | struct snd_soc_codec *codec = socdev->card->codec; | |
995 | ||
996 | dac33_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
997 | ||
998 | return 0; | |
999 | } | |
1000 | ||
1001 | static int dac33_soc_resume(struct platform_device *pdev) | |
1002 | { | |
1003 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1004 | struct snd_soc_codec *codec = socdev->card->codec; | |
1005 | ||
1006 | dac33_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
1007 | dac33_set_bias_level(codec, codec->suspend_bias_level); | |
1008 | ||
1009 | return 0; | |
1010 | } | |
1011 | ||
1012 | struct snd_soc_codec_device soc_codec_dev_tlv320dac33 = { | |
1013 | .probe = dac33_soc_probe, | |
1014 | .remove = dac33_soc_remove, | |
1015 | .suspend = dac33_soc_suspend, | |
1016 | .resume = dac33_soc_resume, | |
1017 | }; | |
1018 | EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320dac33); | |
1019 | ||
1020 | #define DAC33_RATES (SNDRV_PCM_RATE_44100 | \ | |
1021 | SNDRV_PCM_RATE_48000) | |
1022 | #define DAC33_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
1023 | ||
1024 | static struct snd_soc_dai_ops dac33_dai_ops = { | |
1025 | .shutdown = dac33_shutdown, | |
1026 | .hw_params = dac33_hw_params, | |
1027 | .prepare = dac33_pcm_prepare, | |
1028 | .trigger = dac33_pcm_trigger, | |
1029 | .set_sysclk = dac33_set_dai_sysclk, | |
1030 | .set_fmt = dac33_set_dai_fmt, | |
1031 | }; | |
1032 | ||
1033 | struct snd_soc_dai dac33_dai = { | |
1034 | .name = "tlv320dac33", | |
1035 | .playback = { | |
1036 | .stream_name = "Playback", | |
1037 | .channels_min = 2, | |
1038 | .channels_max = 2, | |
1039 | .rates = DAC33_RATES, | |
1040 | .formats = DAC33_FORMATS,}, | |
1041 | .ops = &dac33_dai_ops, | |
1042 | }; | |
1043 | EXPORT_SYMBOL_GPL(dac33_dai); | |
1044 | ||
1045 | static int dac33_i2c_probe(struct i2c_client *client, | |
1046 | const struct i2c_device_id *id) | |
1047 | { | |
1048 | struct tlv320dac33_platform_data *pdata; | |
1049 | struct tlv320dac33_priv *dac33; | |
1050 | struct snd_soc_codec *codec; | |
1051 | int ret = 0; | |
1052 | ||
1053 | if (client->dev.platform_data == NULL) { | |
1054 | dev_err(&client->dev, "Platform data not set\n"); | |
1055 | return -ENODEV; | |
1056 | } | |
1057 | pdata = client->dev.platform_data; | |
1058 | ||
1059 | dac33 = kzalloc(sizeof(struct tlv320dac33_priv), GFP_KERNEL); | |
1060 | if (dac33 == NULL) | |
1061 | return -ENOMEM; | |
1062 | ||
1063 | codec = &dac33->codec; | |
1064 | codec->private_data = dac33; | |
1065 | codec->control_data = client; | |
1066 | ||
1067 | mutex_init(&codec->mutex); | |
1068 | mutex_init(&dac33->mutex); | |
1069 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
1070 | INIT_LIST_HEAD(&codec->dapm_paths); | |
1071 | ||
1072 | codec->name = "tlv320dac33"; | |
1073 | codec->owner = THIS_MODULE; | |
1074 | codec->read = dac33_read_reg_cache; | |
1075 | codec->write = dac33_write_locked; | |
1076 | codec->hw_write = (hw_write_t) i2c_master_send; | |
1077 | codec->bias_level = SND_SOC_BIAS_OFF; | |
1078 | codec->set_bias_level = dac33_set_bias_level; | |
1079 | codec->dai = &dac33_dai; | |
1080 | codec->num_dai = 1; | |
1081 | codec->reg_cache_size = ARRAY_SIZE(dac33_reg); | |
1082 | codec->reg_cache = kmemdup(dac33_reg, ARRAY_SIZE(dac33_reg), | |
1083 | GFP_KERNEL); | |
1084 | if (codec->reg_cache == NULL) { | |
1085 | ret = -ENOMEM; | |
1086 | goto error_reg; | |
1087 | } | |
1088 | ||
1089 | i2c_set_clientdata(client, dac33); | |
1090 | ||
1091 | dac33->power_gpio = pdata->power_gpio; | |
1092 | dac33->irq = client->irq; | |
1093 | dac33->nsample = NSAMPLE_MAX; | |
1094 | /* Disable FIFO use by default */ | |
1095 | dac33->nsample_switch = 0; | |
1096 | ||
1097 | tlv320dac33_codec = codec; | |
1098 | ||
1099 | codec->dev = &client->dev; | |
1100 | dac33_dai.dev = codec->dev; | |
1101 | ||
1102 | /* Check if the reset GPIO number is valid and request it */ | |
1103 | if (dac33->power_gpio >= 0) { | |
1104 | ret = gpio_request(dac33->power_gpio, "tlv320dac33 reset"); | |
1105 | if (ret < 0) { | |
1106 | dev_err(codec->dev, | |
1107 | "Failed to request reset GPIO (%d)\n", | |
1108 | dac33->power_gpio); | |
1109 | snd_soc_unregister_dai(&dac33_dai); | |
1110 | snd_soc_unregister_codec(codec); | |
1111 | goto error_gpio; | |
1112 | } | |
1113 | gpio_direction_output(dac33->power_gpio, 0); | |
1114 | } else { | |
1115 | dac33->chip_power = 1; | |
1116 | } | |
1117 | ||
1118 | /* Check if the IRQ number is valid and request it */ | |
1119 | if (dac33->irq >= 0) { | |
1120 | ret = request_irq(dac33->irq, dac33_interrupt_handler, | |
1121 | IRQF_TRIGGER_RISING | IRQF_DISABLED, | |
1122 | codec->name, codec); | |
1123 | if (ret < 0) { | |
1124 | dev_err(codec->dev, "Could not request IRQ%d (%d)\n", | |
1125 | dac33->irq, ret); | |
1126 | dac33->irq = -1; | |
1127 | } | |
1128 | if (dac33->irq != -1) { | |
1129 | /* Setup work queue */ | |
1130 | dac33->dac33_wq = create_rt_workqueue("tlv320dac33"); | |
1131 | if (dac33->dac33_wq == NULL) { | |
1132 | free_irq(dac33->irq, &dac33->codec); | |
1133 | ret = -ENOMEM; | |
1134 | goto error_wq; | |
1135 | } | |
1136 | ||
1137 | INIT_WORK(&dac33->work, dac33_work); | |
1138 | } | |
1139 | } | |
1140 | ||
1141 | ret = snd_soc_register_codec(codec); | |
1142 | if (ret != 0) { | |
1143 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
1144 | goto error_codec; | |
1145 | } | |
1146 | ||
1147 | ret = snd_soc_register_dai(&dac33_dai); | |
1148 | if (ret != 0) { | |
1149 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
1150 | snd_soc_unregister_codec(codec); | |
1151 | goto error_codec; | |
1152 | } | |
1153 | ||
1154 | /* Shut down the codec for now */ | |
1155 | dac33_hard_power(codec, 0); | |
1156 | ||
1157 | return ret; | |
1158 | ||
1159 | error_codec: | |
1160 | if (dac33->irq >= 0) { | |
1161 | free_irq(dac33->irq, &dac33->codec); | |
1162 | destroy_workqueue(dac33->dac33_wq); | |
1163 | } | |
1164 | error_wq: | |
1165 | if (dac33->power_gpio >= 0) | |
1166 | gpio_free(dac33->power_gpio); | |
1167 | error_gpio: | |
1168 | kfree(codec->reg_cache); | |
1169 | error_reg: | |
1170 | tlv320dac33_codec = NULL; | |
1171 | kfree(dac33); | |
1172 | ||
1173 | return ret; | |
1174 | } | |
1175 | ||
1176 | static int dac33_i2c_remove(struct i2c_client *client) | |
1177 | { | |
1178 | struct tlv320dac33_priv *dac33; | |
1179 | ||
1180 | dac33 = i2c_get_clientdata(client); | |
1181 | dac33_hard_power(&dac33->codec, 0); | |
1182 | ||
1183 | if (dac33->power_gpio >= 0) | |
1184 | gpio_free(dac33->power_gpio); | |
1185 | if (dac33->irq >= 0) | |
1186 | free_irq(dac33->irq, &dac33->codec); | |
1187 | ||
1188 | destroy_workqueue(dac33->dac33_wq); | |
1189 | snd_soc_unregister_dai(&dac33_dai); | |
1190 | snd_soc_unregister_codec(&dac33->codec); | |
1191 | kfree(dac33->codec.reg_cache); | |
1192 | kfree(dac33); | |
1193 | tlv320dac33_codec = NULL; | |
1194 | ||
1195 | return 0; | |
1196 | } | |
1197 | ||
1198 | static const struct i2c_device_id tlv320dac33_i2c_id[] = { | |
1199 | { | |
1200 | .name = "tlv320dac33", | |
1201 | .driver_data = 0, | |
1202 | }, | |
1203 | { }, | |
1204 | }; | |
1205 | ||
1206 | static struct i2c_driver tlv320dac33_i2c_driver = { | |
1207 | .driver = { | |
1208 | .name = "tlv320dac33", | |
1209 | .owner = THIS_MODULE, | |
1210 | }, | |
1211 | .probe = dac33_i2c_probe, | |
1212 | .remove = __devexit_p(dac33_i2c_remove), | |
1213 | .id_table = tlv320dac33_i2c_id, | |
1214 | }; | |
1215 | ||
1216 | static int __init dac33_module_init(void) | |
1217 | { | |
1218 | int r; | |
1219 | r = i2c_add_driver(&tlv320dac33_i2c_driver); | |
1220 | if (r < 0) { | |
1221 | printk(KERN_ERR "DAC33: driver registration failed\n"); | |
1222 | return r; | |
1223 | } | |
1224 | return 0; | |
1225 | } | |
1226 | module_init(dac33_module_init); | |
1227 | ||
1228 | static void __exit dac33_module_exit(void) | |
1229 | { | |
1230 | i2c_del_driver(&tlv320dac33_i2c_driver); | |
1231 | } | |
1232 | module_exit(dac33_module_exit); | |
1233 | ||
1234 | ||
1235 | MODULE_DESCRIPTION("ASoC TLV320DAC33 codec driver"); | |
1236 | MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@nokia.com>"); | |
1237 | MODULE_LICENSE("GPL"); |