1 /*
2 ** =============================================================================
3 ** Copyright (c) 2016 Texas Instruments Inc.
4 **
5 ** This program is free software; you can redistribute it and/or modify it under
6 ** the terms of the GNU General Public License as published by the Free Software
7 ** Foundation; version 2.
8 **
9 ** This program is distributed in the hope that it will be useful, but WITHOUT
10 ** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11 ** FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12 **
13 ** File:
14 ** tas2557-misc.c
15 **
16 ** Description:
17 ** misc driver for Texas Instruments TAS2557 High Performance 4W Smart Amplifier
18 **
19 ** =============================================================================
20 */
22 #ifdef CONFIG_TAS2557_MISC
24 #define DEBUG
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
29 #include <linux/pm.h>
30 #include <linux/i2c.h>
31 #include <linux/gpio.h>
32 #include <linux/regulator/consumer.h>
33 #include <linux/firmware.h>
34 #include <linux/regmap.h>
35 #include <linux/of.h>
36 #include <linux/of_gpio.h>
37 #include <linux/slab.h>
38 #include <linux/syscalls.h>
39 #include <linux/fcntl.h>
40 #include <linux/miscdevice.h>
41 #include <linux/uaccess.h>
43 #include "tas2557.h"
44 #include "tas2557-core.h"
45 #include "tas2557-misc.h"
46 #include <linux/dma-mapping.h>
48 static int g_logEnable = 1;
49 static struct tas2557_priv *g_tas2557;
51 static int tas2557_file_open(struct inode *inode, struct file *file)
52 {
53 struct tas2557_priv *pTAS2557 = g_tas2557;
55 if (!try_module_get(THIS_MODULE))
56 return -ENODEV;
58 file->private_data = (void *)pTAS2557;
59 if (g_logEnable)
60 dev_info(pTAS2557->dev, "%s\n", __func__);
61 return 0;
62 }
64 static int tas2557_file_release(struct inode *inode, struct file *file)
65 {
66 struct tas2557_priv *pTAS2557 = (struct tas2557_priv *)file->private_data;
68 if (g_logEnable)
69 dev_info(pTAS2557->dev, "%s\n", __func__);
70 file->private_data = (void *)NULL;
71 module_put(THIS_MODULE);
73 return 0;
74 }
76 static ssize_t tas2557_file_read(struct file *file, char *buf, size_t count, loff_t *ppos)
77 {
78 struct tas2557_priv *pTAS2557 = (struct tas2557_priv *)file->private_data;
79 int ret = 0;
80 unsigned int nValue = 0;
81 unsigned char value = 0;
82 unsigned char *p_kBuf = NULL;
84 mutex_lock(&pTAS2557->file_lock);
86 switch (pTAS2557->mnDBGCmd) {
87 case TIAUDIO_CMD_REG_READ: {
88 if (g_logEnable)
89 dev_info(pTAS2557->dev, "TIAUDIO_CMD_REG_READ: current_reg = 0x%x, count=%d\n",
90 pTAS2557->mnCurrentReg, (int)count);
91 if (count == 1) {
92 ret = pTAS2557->read(pTAS2557, pTAS2557->mnCurrentReg, &nValue);
93 if (ret < 0)
94 break;
96 value = (u8)nValue;
97 if (g_logEnable)
98 dev_info(pTAS2557->dev, "TIAUDIO_CMD_REG_READ: nValue=0x%x, value=0x%x\n", nValue, value);
99 ret = copy_to_user(buf, &value, 1);
100 if (ret != 0) {
101 /* Failed to copy all the data, exit */
102 dev_err(pTAS2557->dev, "copy to user fail %d\n", ret);
103 }
104 } else if (count > 1) {
105 p_kBuf = kzalloc(count, GFP_KERNEL);
106 if (p_kBuf != NULL) {
107 ret = pTAS2557->bulk_read(pTAS2557, pTAS2557->mnCurrentReg, p_kBuf, count);
108 if (ret < 0)
109 break;
110 ret = copy_to_user(buf, p_kBuf, count);
111 if (ret != 0) {
112 /* Failed to copy all the data, exit */
113 dev_err(pTAS2557->dev, "copy to user fail %d\n", ret);
114 }
115 kfree(p_kBuf);
116 } else
117 dev_err(pTAS2557->dev, "read no mem\n");
118 }
119 }
120 break;
122 case TIAUDIO_CMD_PROGRAM: {
123 if (g_logEnable)
124 dev_info(pTAS2557->dev, "TIAUDIO_CMD_PROGRAM: count = %d\n", (int)count);
126 if (count == PROGRAM_BUF_SIZE) {
127 p_kBuf = kzalloc(count, GFP_KERNEL);
128 if (p_kBuf != NULL) {
129 struct TProgram *pProgram =
130 &(pTAS2557->mpFirmware->mpPrograms[pTAS2557->mnCurrentProgram]);
131 p_kBuf[0] = pTAS2557->mpFirmware->mnPrograms;
132 p_kBuf[1] = pTAS2557->mnCurrentProgram;
133 p_kBuf[2] = pProgram->mnAppMode;
134 p_kBuf[3] = (pProgram->mnBoost&0xff00)>>8;
135 p_kBuf[4] = (pProgram->mnBoost&0x00ff);
136 memcpy(&p_kBuf[5], pProgram->mpName, FW_NAME_SIZE);
137 strlcpy(&p_kBuf[5+FW_NAME_SIZE], pProgram->mpDescription, strlen(pProgram->mpDescription) + 1);
138 ret = copy_to_user(buf, p_kBuf, count);
139 if (ret != 0) {
140 /* Failed to copy all the data, exit */
141 dev_err(pTAS2557->dev, "copy to user fail %d\n", ret);
142 }
143 kfree(p_kBuf);
144 } else
145 dev_err(pTAS2557->dev, "read no mem\n");
146 } else
147 dev_err(pTAS2557->dev, "read buffer not sufficient\n");
148 }
149 break;
151 case TIAUDIO_CMD_CONFIGURATION: {
152 if (g_logEnable)
153 dev_info(pTAS2557->dev, "TIAUDIO_CMD_CONFIGURATION: count = %d\n", (int)count);
154 if (count == CONFIGURATION_BUF_SIZE) {
155 p_kBuf = kzalloc(count, GFP_KERNEL);
156 if (p_kBuf != NULL) {
157 struct TConfiguration *pConfiguration =
158 &(pTAS2557->mpFirmware->mpConfigurations[pTAS2557->mnCurrentConfiguration]);
160 p_kBuf[0] = pTAS2557->mpFirmware->mnConfigurations;
161 p_kBuf[1] = pTAS2557->mnCurrentConfiguration;
162 memcpy(&p_kBuf[2], pConfiguration->mpName, FW_NAME_SIZE);
163 p_kBuf[2+FW_NAME_SIZE] = pConfiguration->mnProgram;
164 p_kBuf[3+FW_NAME_SIZE] = pConfiguration->mnPLL;
165 p_kBuf[4+FW_NAME_SIZE] = (pConfiguration->mnSamplingRate&0x000000ff);
166 p_kBuf[5+FW_NAME_SIZE] = ((pConfiguration->mnSamplingRate&0x0000ff00)>>8);
167 p_kBuf[6+FW_NAME_SIZE] = ((pConfiguration->mnSamplingRate&0x00ff0000)>>16);
168 p_kBuf[7+FW_NAME_SIZE] = ((pConfiguration->mnSamplingRate&0xff000000)>>24);
169 strlcpy(&p_kBuf[8+FW_NAME_SIZE], pConfiguration->mpDescription, strlen(pConfiguration->mpDescription)+1);
170 ret = copy_to_user(buf, p_kBuf, count);
171 if (ret != 0) {
172 /* Failed to copy all the data, exit */
173 dev_err(pTAS2557->dev, "copy to user fail %d\n", ret);
174 }
175 kfree(p_kBuf);
176 } else
177 dev_err(pTAS2557->dev, "read no mem\n");
178 } else
179 dev_err(pTAS2557->dev, "read buffer not sufficient\n");
180 }
181 break;
183 case TIAUDIO_CMD_FW_TIMESTAMP: {
184 if (g_logEnable)
185 dev_info(pTAS2557->dev, "TIAUDIO_CMD_FW_TIMESTAMP: count = %d\n", (int)count);
187 if (count == 4) {
188 p_kBuf = kzalloc(count, GFP_KERNEL);
189 if (p_kBuf != NULL) {
190 p_kBuf[0] = (pTAS2557->mpFirmware->mnTimeStamp&0x000000ff);
191 p_kBuf[1] = ((pTAS2557->mpFirmware->mnTimeStamp&0x0000ff00)>>8);
192 p_kBuf[2] = ((pTAS2557->mpFirmware->mnTimeStamp&0x00ff0000)>>16);
193 p_kBuf[3] = ((pTAS2557->mpFirmware->mnTimeStamp&0xff000000)>>24);
194 ret = copy_to_user(buf, p_kBuf, count);
195 if (ret != 0) {
196 /* Failed to copy all the data, exit */
197 dev_err(pTAS2557->dev, "copy to user fail %d\n", ret);
198 }
199 kfree(p_kBuf);
200 } else
201 dev_err(pTAS2557->dev, "read no mem\n");
202 }
203 }
204 break;
206 case TIAUDIO_CMD_CALIBRATION: {
207 if (g_logEnable)
208 dev_info(pTAS2557->dev, "TIAUDIO_CMD_CALIBRATION: count = %d\n", (int)count);
210 if (count == 1) {
211 unsigned char curCal = pTAS2557->mnCurrentCalibration;
213 ret = copy_to_user(buf, &curCal, 1);
214 if (ret != 0) {
215 /* Failed to copy all the data, exit */
216 dev_err(pTAS2557->dev, "copy to user fail %d\n", ret);
217 }
218 }
219 }
220 break;
222 case TIAUDIO_CMD_SAMPLERATE: {
223 if (g_logEnable)
224 dev_info(pTAS2557->dev, "TIAUDIO_CMD_SAMPLERATE: count = %d\n", (int)count);
225 if (count == 4) {
226 p_kBuf = kzalloc(count, GFP_KERNEL);
227 if (p_kBuf != NULL) {
228 struct TConfiguration *pConfiguration =
229 &(pTAS2557->mpFirmware->mpConfigurations[pTAS2557->mnCurrentConfiguration]);
231 p_kBuf[0] = (pConfiguration->mnSamplingRate&0x000000ff);
232 p_kBuf[1] = ((pConfiguration->mnSamplingRate&0x0000ff00)>>8);
233 p_kBuf[2] = ((pConfiguration->mnSamplingRate&0x00ff0000)>>16);
234 p_kBuf[3] = ((pConfiguration->mnSamplingRate&0xff000000)>>24);
236 ret = copy_to_user(buf, p_kBuf, count);
237 if (ret != 0) {
238 /* Failed to copy all the data, exit */
239 dev_err(pTAS2557->dev, "copy to user fail %d\n", ret);
240 }
242 kfree(p_kBuf);
243 } else
244 dev_err(pTAS2557->dev, "read no mem\n");
245 }
246 }
247 break;
249 case TIAUDIO_CMD_BITRATE: {
250 if (g_logEnable)
251 dev_info(pTAS2557->dev,
252 "TIAUDIO_CMD_BITRATE: count = %d\n", (int)count);
254 if (count == 1) {
255 unsigned char bitRate = 0;
256 ret = tas2557_get_bit_rate(pTAS2557, &bitRate);
257 if (ret >= 0) {
258 ret = copy_to_user(buf, &bitRate, 1);
259 if (ret != 0) {
260 /* Failed to copy all the data, exit */
261 dev_err(pTAS2557->dev, "copy to user fail %d\n", ret);
262 }
263 }
264 }
265 }
266 break;
268 case TIAUDIO_CMD_DACVOLUME: {
269 if (g_logEnable)
270 dev_info(pTAS2557->dev, "TIAUDIO_CMD_DACVOLUME: count = %d\n", (int)count);
272 if (count == 1) {
273 unsigned char volume = 0;
275 ret = tas2557_get_DAC_gain(pTAS2557, &volume);
276 if (ret >= 0) {
277 ret = copy_to_user(buf, &volume, 1);
278 if (ret != 0) {
279 /* Failed to copy all the data, exit */
280 dev_err(pTAS2557->dev, "copy to user fail %d\n", ret);
281 }
282 }
283 }
284 }
285 break;
286 }
287 pTAS2557->mnDBGCmd = 0;
289 mutex_unlock(&pTAS2557->file_lock);
290 return count;
291 }
293 static ssize_t tas2557_file_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
294 {
295 struct tas2557_priv *pTAS2557 = (struct tas2557_priv *)file->private_data;
296 int ret = 0;
297 unsigned char *p_kBuf = NULL;
298 unsigned int reg = 0;
299 unsigned int len = 0;
301 mutex_lock(&pTAS2557->file_lock);
303 p_kBuf = kzalloc(count, GFP_KERNEL);
304 if (p_kBuf == NULL) {
305 dev_err(pTAS2557->dev, "write no mem\n");
306 goto err;
307 }
309 ret = copy_from_user(p_kBuf, buf, count);
310 if (ret != 0) {
311 dev_err(pTAS2557->dev, "copy_from_user failed.\n");
312 goto err;
313 }
315 pTAS2557->mnDBGCmd = p_kBuf[0];
316 switch (pTAS2557->mnDBGCmd) {
317 case TIAUDIO_CMD_REG_WITE:
318 if (count > 5) {
319 reg = ((unsigned int)p_kBuf[1] << 24)
320 + ((unsigned int)p_kBuf[2] << 16)
321 + ((unsigned int)p_kBuf[3] << 8)
322 + (unsigned int)p_kBuf[4];
323 len = count - 5;
324 if (len == 1) {
325 ret = pTAS2557->write(pTAS2557, reg, p_kBuf[5]);
326 if (g_logEnable)
327 dev_info(pTAS2557->dev, "TIAUDIO_CMD_REG_WITE, Reg=0x%x, Val=0x%x\n", reg, p_kBuf[5]);
328 } else
329 ret = pTAS2557->bulk_write(pTAS2557, reg, &p_kBuf[5], len);
330 } else
331 dev_err(pTAS2557->dev, "%s, write len fail, count=%d.\n", __func__, (int)count);
332 pTAS2557->mnDBGCmd = 0;
333 break;
335 case TIAUDIO_CMD_REG_READ:
336 if (count == 5) {
337 pTAS2557->mnCurrentReg = ((unsigned int)p_kBuf[1] << 24)
338 + ((unsigned int)p_kBuf[2] << 16)
339 + ((unsigned int)p_kBuf[3] << 8)
340 + (unsigned int)p_kBuf[4];
341 if (g_logEnable)
342 dev_info(pTAS2557->dev, "TIAUDIO_CMD_REG_READ whole=0x%x\n", pTAS2557->mnCurrentReg);
343 } else
344 dev_err(pTAS2557->dev, "read len fail.\n");
345 break;
347 case TIAUDIO_CMD_DEBUG_ON:
348 if (count == 2)
349 g_logEnable = p_kBuf[1];
351 pTAS2557->mnDBGCmd = 0;
352 break;
354 case TIAUDIO_CMD_PROGRAM:
355 if (count == 2) {
356 if (g_logEnable)
357 dev_info(pTAS2557->dev, "TIAUDIO_CMD_PROGRAM, set to %d\n", p_kBuf[1]);
358 tas2557_set_program(pTAS2557, p_kBuf[1], -1);
359 pTAS2557->mnDBGCmd = 0;
360 }
361 break;
363 case TIAUDIO_CMD_CONFIGURATION:
364 if (count == 2) {
365 if (g_logEnable)
366 dev_info(pTAS2557->dev, "TIAUDIO_CMD_CONFIGURATION, set to %d\n", p_kBuf[1]);
367 tas2557_set_config(pTAS2557, p_kBuf[1]);
368 pTAS2557->mnDBGCmd = 0;
369 }
370 break;
372 case TIAUDIO_CMD_FW_TIMESTAMP:
373 /*let go*/
374 break;
376 case TIAUDIO_CMD_CALIBRATION:
377 if (count == 2) {
378 if (g_logEnable)
379 dev_info(pTAS2557->dev, "TIAUDIO_CMD_CALIBRATION, set to %d\n", p_kBuf[1]);
380 tas2557_set_calibration(pTAS2557, p_kBuf[1]);
381 pTAS2557->mnDBGCmd = 0;
382 }
383 break;
385 case TIAUDIO_CMD_SAMPLERATE:
386 if (count == 5) {
387 unsigned int nSampleRate = ((unsigned int)p_kBuf[1] << 24) +
388 ((unsigned int)p_kBuf[2] << 16) +
389 ((unsigned int)p_kBuf[3] << 8) +
390 (unsigned int)p_kBuf[4];
391 if (g_logEnable)
392 dev_info(pTAS2557->dev, "TIAUDIO_CMD_SAMPLERATE, set to %d\n", nSampleRate);
394 tas2557_set_sampling_rate(pTAS2557, nSampleRate);
395 }
396 break;
398 case TIAUDIO_CMD_BITRATE:
399 if (count == 2) {
400 if (g_logEnable)
401 dev_info(pTAS2557->dev, "TIAUDIO_CMD_BITRATE, set to %d\n", p_kBuf[1]);
403 tas2557_set_bit_rate(pTAS2557, p_kBuf[1]);
404 }
405 break;
407 case TIAUDIO_CMD_DACVOLUME:
408 if (count == 2) {
409 unsigned char volume;
411 volume = (p_kBuf[1] & 0x0f);
412 if (g_logEnable)
413 dev_info(pTAS2557->dev, "TIAUDIO_CMD_DACVOLUME, set to %d\n", volume);
415 tas2557_set_DAC_gain(pTAS2557, volume);
416 }
417 break;
419 case TIAUDIO_CMD_SPEAKER:
420 if (count == 2) {
421 if (g_logEnable)
422 dev_info(pTAS2557->dev, "TIAUDIO_CMD_SPEAKER, set to %d\n", p_kBuf[1]);
423 tas2557_enable(pTAS2557, (p_kBuf[1] > 0));
424 }
425 break;
427 case TIAUDIO_CMD_FW_RELOAD:
428 if (count == 1) {
429 const char *pFWName;
430 if (pTAS2557->mnPGID == TAS2557_PG_VERSION_2P1)
431 pFWName = TAS2557_FW_NAME;
432 else if (pTAS2557->mnPGID == TAS2557_PG_VERSION_1P0)
433 pFWName = TAS2557_PG1P0_FW_NAME;
434 else
435 break;
437 ret = request_firmware_nowait(THIS_MODULE, 1, pFWName,
438 pTAS2557->dev, GFP_KERNEL, pTAS2557, tas2557_fw_ready);
440 if (g_logEnable)
441 dev_info(pTAS2557->dev, "TIAUDIO_CMD_FW_RELOAD: ret = %d\n", ret);
442 }
443 break;
445 default:
446 pTAS2557->mnDBGCmd = 0;
447 break;
448 }
450 err:
451 if (p_kBuf != NULL)
452 kfree(p_kBuf);
454 mutex_unlock(&pTAS2557->file_lock);
456 return count;
457 }
459 static long tas2557_file_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
460 {
461 struct tas2557_priv *pTAS2557 = file->private_data;
462 int ret = 0;
464 mutex_lock(&pTAS2557->file_lock);
466 switch (cmd) {
467 case SMARTPA_SPK_DAC_VOLUME:
468 {
469 }
470 break;
472 case SMARTPA_SPK_POWER_ON:
473 {
474 tas2557_enable(pTAS2557, true);
475 }
476 break;
478 case SMARTPA_SPK_POWER_OFF:
479 {
480 tas2557_enable(pTAS2557, false);
481 }
482 break;
484 case SMARTPA_SPK_SWITCH_PROGRAM:
485 {
486 tas2557_set_program(pTAS2557, arg, -1);
487 }
488 break;
490 case SMARTPA_SPK_SWITCH_CONFIGURATION:
491 {
492 tas2557_set_config(pTAS2557, arg);
493 }
494 break;
496 case SMARTPA_SPK_SWITCH_CALIBRATION:
497 {
498 tas2557_set_calibration(pTAS2557, arg);
499 }
500 break;
502 case SMARTPA_SPK_SET_SAMPLERATE:
503 {
504 tas2557_set_sampling_rate(pTAS2557, arg);
505 }
506 break;
508 case SMARTPA_SPK_SET_BITRATE:
509 {
510 tas2557_set_bit_rate(pTAS2557, arg);
511 }
512 break;
513 }
515 mutex_unlock(&pTAS2557->file_lock);
516 return ret;
517 }
519 static const struct file_operations fops = {
520 .owner = THIS_MODULE,
521 .read = tas2557_file_read,
522 .write = tas2557_file_write,
523 .unlocked_ioctl = tas2557_file_unlocked_ioctl,
524 .open = tas2557_file_open,
525 .release = tas2557_file_release,
526 };
528 #define MODULE_NAME "tas2557"
529 static struct miscdevice tas2557_misc = {
530 .minor = MISC_DYNAMIC_MINOR,
531 .name = MODULE_NAME,
532 .fops = &fops,
533 };
535 int tas2557_register_misc(struct tas2557_priv *pTAS2557)
536 {
537 int ret = 0;
539 g_tas2557 = pTAS2557;
541 ret = misc_register(&tas2557_misc);
542 if (ret)
543 dev_err(pTAS2557->dev, "TAS2557 misc fail: %d\n", ret);
545 dev_info(pTAS2557->dev, "%s, leave\n", __func__);
547 return ret;
548 }
550 int tas2557_deregister_misc(struct tas2557_priv *pTAS2557)
551 {
552 misc_deregister(&tas2557_misc);
553 return 0;
554 }
556 MODULE_AUTHOR("Texas Instruments Inc.");
557 MODULE_DESCRIPTION("TAS2557 Misc Smart Amplifier driver");
558 MODULE_LICENSE("GPL v2");
559 #endif