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Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
[mirror_ubuntu-focal-kernel.git] / drivers / thermal / rockchip_thermal.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2014-2016, Fuzhou Rockchip Electronics Co., Ltd
4 * Caesar Wang <wxt@rock-chips.com>
5 */
6
7 #include <linux/clk.h>
8 #include <linux/delay.h>
9 #include <linux/interrupt.h>
10 #include <linux/io.h>
11 #include <linux/module.h>
12 #include <linux/of.h>
13 #include <linux/of_address.h>
14 #include <linux/of_irq.h>
15 #include <linux/platform_device.h>
16 #include <linux/regmap.h>
17 #include <linux/reset.h>
18 #include <linux/thermal.h>
19 #include <linux/mfd/syscon.h>
20 #include <linux/pinctrl/consumer.h>
21
22 /**
23 * If the temperature over a period of time High,
24 * the resulting TSHUT gave CRU module,let it reset the entire chip,
25 * or via GPIO give PMIC.
26 */
27 enum tshut_mode {
28 TSHUT_MODE_CRU = 0,
29 TSHUT_MODE_GPIO,
30 };
31
32 /**
33 * The system Temperature Sensors tshut(tshut) polarity
34 * the bit 8 is tshut polarity.
35 * 0: low active, 1: high active
36 */
37 enum tshut_polarity {
38 TSHUT_LOW_ACTIVE = 0,
39 TSHUT_HIGH_ACTIVE,
40 };
41
42 /**
43 * The system has two Temperature Sensors.
44 * sensor0 is for CPU, and sensor1 is for GPU.
45 */
46 enum sensor_id {
47 SENSOR_CPU = 0,
48 SENSOR_GPU,
49 };
50
51 /**
52 * The conversion table has the adc value and temperature.
53 * ADC_DECREMENT: the adc value is of diminishing.(e.g. rk3288_code_table)
54 * ADC_INCREMENT: the adc value is incremental.(e.g. rk3368_code_table)
55 */
56 enum adc_sort_mode {
57 ADC_DECREMENT = 0,
58 ADC_INCREMENT,
59 };
60
61 /**
62 * The max sensors is two in rockchip SoCs.
63 * Two sensors: CPU and GPU sensor.
64 */
65 #define SOC_MAX_SENSORS 2
66
67 /**
68 * struct chip_tsadc_table - hold information about chip-specific differences
69 * @id: conversion table
70 * @length: size of conversion table
71 * @data_mask: mask to apply on data inputs
72 * @mode: sort mode of this adc variant (incrementing or decrementing)
73 */
74 struct chip_tsadc_table {
75 const struct tsadc_table *id;
76 unsigned int length;
77 u32 data_mask;
78 enum adc_sort_mode mode;
79 };
80
81 /**
82 * struct rockchip_tsadc_chip - hold the private data of tsadc chip
83 * @chn_id[SOC_MAX_SENSORS]: the sensor id of chip correspond to the channel
84 * @chn_num: the channel number of tsadc chip
85 * @tshut_temp: the hardware-controlled shutdown temperature value
86 * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO)
87 * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH)
88 * @initialize: SoC special initialize tsadc controller method
89 * @irq_ack: clear the interrupt
90 * @get_temp: get the temperature
91 * @set_alarm_temp: set the high temperature interrupt
92 * @set_tshut_temp: set the hardware-controlled shutdown temperature
93 * @set_tshut_mode: set the hardware-controlled shutdown mode
94 * @table: the chip-specific conversion table
95 */
96 struct rockchip_tsadc_chip {
97 /* The sensor id of chip correspond to the ADC channel */
98 int chn_id[SOC_MAX_SENSORS];
99 int chn_num;
100
101 /* The hardware-controlled tshut property */
102 int tshut_temp;
103 enum tshut_mode tshut_mode;
104 enum tshut_polarity tshut_polarity;
105
106 /* Chip-wide methods */
107 void (*initialize)(struct regmap *grf,
108 void __iomem *reg, enum tshut_polarity p);
109 void (*irq_ack)(void __iomem *reg);
110 void (*control)(void __iomem *reg, bool on);
111
112 /* Per-sensor methods */
113 int (*get_temp)(const struct chip_tsadc_table *table,
114 int chn, void __iomem *reg, int *temp);
115 int (*set_alarm_temp)(const struct chip_tsadc_table *table,
116 int chn, void __iomem *reg, int temp);
117 int (*set_tshut_temp)(const struct chip_tsadc_table *table,
118 int chn, void __iomem *reg, int temp);
119 void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m);
120
121 /* Per-table methods */
122 struct chip_tsadc_table table;
123 };
124
125 /**
126 * struct rockchip_thermal_sensor - hold the information of thermal sensor
127 * @thermal: pointer to the platform/configuration data
128 * @tzd: pointer to a thermal zone
129 * @id: identifier of the thermal sensor
130 */
131 struct rockchip_thermal_sensor {
132 struct rockchip_thermal_data *thermal;
133 struct thermal_zone_device *tzd;
134 int id;
135 };
136
137 /**
138 * struct rockchip_thermal_data - hold the private data of thermal driver
139 * @chip: pointer to the platform/configuration data
140 * @pdev: platform device of thermal
141 * @reset: the reset controller of tsadc
142 * @sensors[SOC_MAX_SENSORS]: the thermal sensor
143 * @clk: the controller clock is divided by the exteral 24MHz
144 * @pclk: the advanced peripherals bus clock
145 * @grf: the general register file will be used to do static set by software
146 * @regs: the base address of tsadc controller
147 * @tshut_temp: the hardware-controlled shutdown temperature value
148 * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO)
149 * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH)
150 */
151 struct rockchip_thermal_data {
152 const struct rockchip_tsadc_chip *chip;
153 struct platform_device *pdev;
154 struct reset_control *reset;
155
156 struct rockchip_thermal_sensor sensors[SOC_MAX_SENSORS];
157
158 struct clk *clk;
159 struct clk *pclk;
160
161 struct regmap *grf;
162 void __iomem *regs;
163
164 int tshut_temp;
165 enum tshut_mode tshut_mode;
166 enum tshut_polarity tshut_polarity;
167 };
168
169 /**
170 * TSADC Sensor Register description:
171 *
172 * TSADCV2_* are used for RK3288 SoCs, the other chips can reuse it.
173 * TSADCV3_* are used for newer SoCs than RK3288. (e.g: RK3228, RK3399)
174 *
175 */
176 #define TSADCV2_USER_CON 0x00
177 #define TSADCV2_AUTO_CON 0x04
178 #define TSADCV2_INT_EN 0x08
179 #define TSADCV2_INT_PD 0x0c
180 #define TSADCV2_DATA(chn) (0x20 + (chn) * 0x04)
181 #define TSADCV2_COMP_INT(chn) (0x30 + (chn) * 0x04)
182 #define TSADCV2_COMP_SHUT(chn) (0x40 + (chn) * 0x04)
183 #define TSADCV2_HIGHT_INT_DEBOUNCE 0x60
184 #define TSADCV2_HIGHT_TSHUT_DEBOUNCE 0x64
185 #define TSADCV2_AUTO_PERIOD 0x68
186 #define TSADCV2_AUTO_PERIOD_HT 0x6c
187
188 #define TSADCV2_AUTO_EN BIT(0)
189 #define TSADCV2_AUTO_SRC_EN(chn) BIT(4 + (chn))
190 #define TSADCV2_AUTO_TSHUT_POLARITY_HIGH BIT(8)
191
192 #define TSADCV3_AUTO_Q_SEL_EN BIT(1)
193
194 #define TSADCV2_INT_SRC_EN(chn) BIT(chn)
195 #define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn))
196 #define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn))
197
198 #define TSADCV2_INT_PD_CLEAR_MASK ~BIT(8)
199 #define TSADCV3_INT_PD_CLEAR_MASK ~BIT(16)
200
201 #define TSADCV2_DATA_MASK 0xfff
202 #define TSADCV3_DATA_MASK 0x3ff
203
204 #define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT 4
205 #define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT 4
206 #define TSADCV2_AUTO_PERIOD_TIME 250 /* 250ms */
207 #define TSADCV2_AUTO_PERIOD_HT_TIME 50 /* 50ms */
208 #define TSADCV3_AUTO_PERIOD_TIME 1875 /* 2.5ms */
209 #define TSADCV3_AUTO_PERIOD_HT_TIME 1875 /* 2.5ms */
210
211 #define TSADCV2_USER_INTER_PD_SOC 0x340 /* 13 clocks */
212
213 #define GRF_SARADC_TESTBIT 0x0e644
214 #define GRF_TSADC_TESTBIT_L 0x0e648
215 #define GRF_TSADC_TESTBIT_H 0x0e64c
216
217 #define PX30_GRF_SOC_CON2 0x0408
218
219 #define GRF_SARADC_TESTBIT_ON (0x10001 << 2)
220 #define GRF_TSADC_TESTBIT_H_ON (0x10001 << 2)
221 #define GRF_TSADC_VCM_EN_L (0x10001 << 7)
222 #define GRF_TSADC_VCM_EN_H (0x10001 << 7)
223
224 #define GRF_CON_TSADC_CH_INV (0x10001 << 1)
225
226 /**
227 * struct tsadc_table - code to temperature conversion table
228 * @code: the value of adc channel
229 * @temp: the temperature
230 * Note:
231 * code to temperature mapping of the temperature sensor is a piece wise linear
232 * curve.Any temperature, code faling between to 2 give temperatures can be
233 * linearly interpolated.
234 * Code to Temperature mapping should be updated based on manufacturer results.
235 */
236 struct tsadc_table {
237 u32 code;
238 int temp;
239 };
240
241 static const struct tsadc_table rv1108_table[] = {
242 {0, -40000},
243 {374, -40000},
244 {382, -35000},
245 {389, -30000},
246 {397, -25000},
247 {405, -20000},
248 {413, -15000},
249 {421, -10000},
250 {429, -5000},
251 {436, 0},
252 {444, 5000},
253 {452, 10000},
254 {460, 15000},
255 {468, 20000},
256 {476, 25000},
257 {483, 30000},
258 {491, 35000},
259 {499, 40000},
260 {507, 45000},
261 {515, 50000},
262 {523, 55000},
263 {531, 60000},
264 {539, 65000},
265 {547, 70000},
266 {555, 75000},
267 {562, 80000},
268 {570, 85000},
269 {578, 90000},
270 {586, 95000},
271 {594, 100000},
272 {602, 105000},
273 {610, 110000},
274 {618, 115000},
275 {626, 120000},
276 {634, 125000},
277 {TSADCV2_DATA_MASK, 125000},
278 };
279
280 static const struct tsadc_table rk3228_code_table[] = {
281 {0, -40000},
282 {588, -40000},
283 {593, -35000},
284 {598, -30000},
285 {603, -25000},
286 {608, -20000},
287 {613, -15000},
288 {618, -10000},
289 {623, -5000},
290 {629, 0},
291 {634, 5000},
292 {639, 10000},
293 {644, 15000},
294 {649, 20000},
295 {654, 25000},
296 {660, 30000},
297 {665, 35000},
298 {670, 40000},
299 {675, 45000},
300 {681, 50000},
301 {686, 55000},
302 {691, 60000},
303 {696, 65000},
304 {702, 70000},
305 {707, 75000},
306 {712, 80000},
307 {717, 85000},
308 {723, 90000},
309 {728, 95000},
310 {733, 100000},
311 {738, 105000},
312 {744, 110000},
313 {749, 115000},
314 {754, 120000},
315 {760, 125000},
316 {TSADCV2_DATA_MASK, 125000},
317 };
318
319 static const struct tsadc_table rk3288_code_table[] = {
320 {TSADCV2_DATA_MASK, -40000},
321 {3800, -40000},
322 {3792, -35000},
323 {3783, -30000},
324 {3774, -25000},
325 {3765, -20000},
326 {3756, -15000},
327 {3747, -10000},
328 {3737, -5000},
329 {3728, 0},
330 {3718, 5000},
331 {3708, 10000},
332 {3698, 15000},
333 {3688, 20000},
334 {3678, 25000},
335 {3667, 30000},
336 {3656, 35000},
337 {3645, 40000},
338 {3634, 45000},
339 {3623, 50000},
340 {3611, 55000},
341 {3600, 60000},
342 {3588, 65000},
343 {3575, 70000},
344 {3563, 75000},
345 {3550, 80000},
346 {3537, 85000},
347 {3524, 90000},
348 {3510, 95000},
349 {3496, 100000},
350 {3482, 105000},
351 {3467, 110000},
352 {3452, 115000},
353 {3437, 120000},
354 {3421, 125000},
355 {0, 125000},
356 };
357
358 static const struct tsadc_table rk3328_code_table[] = {
359 {0, -40000},
360 {296, -40000},
361 {304, -35000},
362 {313, -30000},
363 {331, -20000},
364 {340, -15000},
365 {349, -10000},
366 {359, -5000},
367 {368, 0},
368 {378, 5000},
369 {388, 10000},
370 {398, 15000},
371 {408, 20000},
372 {418, 25000},
373 {429, 30000},
374 {440, 35000},
375 {451, 40000},
376 {462, 45000},
377 {473, 50000},
378 {485, 55000},
379 {496, 60000},
380 {508, 65000},
381 {521, 70000},
382 {533, 75000},
383 {546, 80000},
384 {559, 85000},
385 {572, 90000},
386 {586, 95000},
387 {600, 100000},
388 {614, 105000},
389 {629, 110000},
390 {644, 115000},
391 {659, 120000},
392 {675, 125000},
393 {TSADCV2_DATA_MASK, 125000},
394 };
395
396 static const struct tsadc_table rk3368_code_table[] = {
397 {0, -40000},
398 {106, -40000},
399 {108, -35000},
400 {110, -30000},
401 {112, -25000},
402 {114, -20000},
403 {116, -15000},
404 {118, -10000},
405 {120, -5000},
406 {122, 0},
407 {124, 5000},
408 {126, 10000},
409 {128, 15000},
410 {130, 20000},
411 {132, 25000},
412 {134, 30000},
413 {136, 35000},
414 {138, 40000},
415 {140, 45000},
416 {142, 50000},
417 {144, 55000},
418 {146, 60000},
419 {148, 65000},
420 {150, 70000},
421 {152, 75000},
422 {154, 80000},
423 {156, 85000},
424 {158, 90000},
425 {160, 95000},
426 {162, 100000},
427 {163, 105000},
428 {165, 110000},
429 {167, 115000},
430 {169, 120000},
431 {171, 125000},
432 {TSADCV3_DATA_MASK, 125000},
433 };
434
435 static const struct tsadc_table rk3399_code_table[] = {
436 {0, -40000},
437 {402, -40000},
438 {410, -35000},
439 {419, -30000},
440 {427, -25000},
441 {436, -20000},
442 {444, -15000},
443 {453, -10000},
444 {461, -5000},
445 {470, 0},
446 {478, 5000},
447 {487, 10000},
448 {496, 15000},
449 {504, 20000},
450 {513, 25000},
451 {521, 30000},
452 {530, 35000},
453 {538, 40000},
454 {547, 45000},
455 {555, 50000},
456 {564, 55000},
457 {573, 60000},
458 {581, 65000},
459 {590, 70000},
460 {599, 75000},
461 {607, 80000},
462 {616, 85000},
463 {624, 90000},
464 {633, 95000},
465 {642, 100000},
466 {650, 105000},
467 {659, 110000},
468 {668, 115000},
469 {677, 120000},
470 {685, 125000},
471 {TSADCV3_DATA_MASK, 125000},
472 };
473
474 static u32 rk_tsadcv2_temp_to_code(const struct chip_tsadc_table *table,
475 int temp)
476 {
477 int high, low, mid;
478 unsigned long num;
479 unsigned int denom;
480 u32 error = table->data_mask;
481
482 low = 0;
483 high = (table->length - 1) - 1; /* ignore the last check for table */
484 mid = (high + low) / 2;
485
486 /* Return mask code data when the temp is over table range */
487 if (temp < table->id[low].temp || temp > table->id[high].temp)
488 goto exit;
489
490 while (low <= high) {
491 if (temp == table->id[mid].temp)
492 return table->id[mid].code;
493 else if (temp < table->id[mid].temp)
494 high = mid - 1;
495 else
496 low = mid + 1;
497 mid = (low + high) / 2;
498 }
499
500 /*
501 * The conversion code granularity provided by the table. Let's
502 * assume that the relationship between temperature and
503 * analog value between 2 table entries is linear and interpolate
504 * to produce less granular result.
505 */
506 num = abs(table->id[mid + 1].code - table->id[mid].code);
507 num *= temp - table->id[mid].temp;
508 denom = table->id[mid + 1].temp - table->id[mid].temp;
509
510 switch (table->mode) {
511 case ADC_DECREMENT:
512 return table->id[mid].code - (num / denom);
513 case ADC_INCREMENT:
514 return table->id[mid].code + (num / denom);
515 default:
516 pr_err("%s: unknown table mode: %d\n", __func__, table->mode);
517 return error;
518 }
519
520 exit:
521 pr_err("%s: invalid temperature, temp=%d error=%d\n",
522 __func__, temp, error);
523 return error;
524 }
525
526 static int rk_tsadcv2_code_to_temp(const struct chip_tsadc_table *table,
527 u32 code, int *temp)
528 {
529 unsigned int low = 1;
530 unsigned int high = table->length - 1;
531 unsigned int mid = (low + high) / 2;
532 unsigned int num;
533 unsigned long denom;
534
535 WARN_ON(table->length < 2);
536
537 switch (table->mode) {
538 case ADC_DECREMENT:
539 code &= table->data_mask;
540 if (code <= table->id[high].code)
541 return -EAGAIN; /* Incorrect reading */
542
543 while (low <= high) {
544 if (code >= table->id[mid].code &&
545 code < table->id[mid - 1].code)
546 break;
547 else if (code < table->id[mid].code)
548 low = mid + 1;
549 else
550 high = mid - 1;
551
552 mid = (low + high) / 2;
553 }
554 break;
555 case ADC_INCREMENT:
556 code &= table->data_mask;
557 if (code < table->id[low].code)
558 return -EAGAIN; /* Incorrect reading */
559
560 while (low <= high) {
561 if (code <= table->id[mid].code &&
562 code > table->id[mid - 1].code)
563 break;
564 else if (code > table->id[mid].code)
565 low = mid + 1;
566 else
567 high = mid - 1;
568
569 mid = (low + high) / 2;
570 }
571 break;
572 default:
573 pr_err("%s: unknown table mode: %d\n", __func__, table->mode);
574 return -EINVAL;
575 }
576
577 /*
578 * The 5C granularity provided by the table is too much. Let's
579 * assume that the relationship between sensor readings and
580 * temperature between 2 table entries is linear and interpolate
581 * to produce less granular result.
582 */
583 num = table->id[mid].temp - table->id[mid - 1].temp;
584 num *= abs(table->id[mid - 1].code - code);
585 denom = abs(table->id[mid - 1].code - table->id[mid].code);
586 *temp = table->id[mid - 1].temp + (num / denom);
587
588 return 0;
589 }
590
591 /**
592 * rk_tsadcv2_initialize - initialize TASDC Controller.
593 *
594 * (1) Set TSADC_V2_AUTO_PERIOD:
595 * Configure the interleave between every two accessing of
596 * TSADC in normal operation.
597 *
598 * (2) Set TSADCV2_AUTO_PERIOD_HT:
599 * Configure the interleave between every two accessing of
600 * TSADC after the temperature is higher than COM_SHUT or COM_INT.
601 *
602 * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE:
603 * If the temperature is higher than COMP_INT or COMP_SHUT for
604 * "debounce" times, TSADC controller will generate interrupt or TSHUT.
605 */
606 static void rk_tsadcv2_initialize(struct regmap *grf, void __iomem *regs,
607 enum tshut_polarity tshut_polarity)
608 {
609 if (tshut_polarity == TSHUT_HIGH_ACTIVE)
610 writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
611 regs + TSADCV2_AUTO_CON);
612 else
613 writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
614 regs + TSADCV2_AUTO_CON);
615
616 writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, regs + TSADCV2_AUTO_PERIOD);
617 writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT,
618 regs + TSADCV2_HIGHT_INT_DEBOUNCE);
619 writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME,
620 regs + TSADCV2_AUTO_PERIOD_HT);
621 writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT,
622 regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE);
623 }
624
625 /**
626 * rk_tsadcv3_initialize - initialize TASDC Controller.
627 *
628 * (1) The tsadc control power sequence.
629 *
630 * (2) Set TSADC_V2_AUTO_PERIOD:
631 * Configure the interleave between every two accessing of
632 * TSADC in normal operation.
633 *
634 * (2) Set TSADCV2_AUTO_PERIOD_HT:
635 * Configure the interleave between every two accessing of
636 * TSADC after the temperature is higher than COM_SHUT or COM_INT.
637 *
638 * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE:
639 * If the temperature is higher than COMP_INT or COMP_SHUT for
640 * "debounce" times, TSADC controller will generate interrupt or TSHUT.
641 */
642 static void rk_tsadcv3_initialize(struct regmap *grf, void __iomem *regs,
643 enum tshut_polarity tshut_polarity)
644 {
645 /* The tsadc control power sequence */
646 if (IS_ERR(grf)) {
647 /* Set interleave value to workround ic time sync issue */
648 writel_relaxed(TSADCV2_USER_INTER_PD_SOC, regs +
649 TSADCV2_USER_CON);
650
651 writel_relaxed(TSADCV2_AUTO_PERIOD_TIME,
652 regs + TSADCV2_AUTO_PERIOD);
653 writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT,
654 regs + TSADCV2_HIGHT_INT_DEBOUNCE);
655 writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME,
656 regs + TSADCV2_AUTO_PERIOD_HT);
657 writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT,
658 regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE);
659
660 } else {
661 /* Enable the voltage common mode feature */
662 regmap_write(grf, GRF_TSADC_TESTBIT_L, GRF_TSADC_VCM_EN_L);
663 regmap_write(grf, GRF_TSADC_TESTBIT_H, GRF_TSADC_VCM_EN_H);
664
665 usleep_range(15, 100); /* The spec note says at least 15 us */
666 regmap_write(grf, GRF_SARADC_TESTBIT, GRF_SARADC_TESTBIT_ON);
667 regmap_write(grf, GRF_TSADC_TESTBIT_H, GRF_TSADC_TESTBIT_H_ON);
668 usleep_range(90, 200); /* The spec note says at least 90 us */
669
670 writel_relaxed(TSADCV3_AUTO_PERIOD_TIME,
671 regs + TSADCV2_AUTO_PERIOD);
672 writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT,
673 regs + TSADCV2_HIGHT_INT_DEBOUNCE);
674 writel_relaxed(TSADCV3_AUTO_PERIOD_HT_TIME,
675 regs + TSADCV2_AUTO_PERIOD_HT);
676 writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT,
677 regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE);
678 }
679
680 if (tshut_polarity == TSHUT_HIGH_ACTIVE)
681 writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
682 regs + TSADCV2_AUTO_CON);
683 else
684 writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
685 regs + TSADCV2_AUTO_CON);
686 }
687
688 static void rk_tsadcv4_initialize(struct regmap *grf, void __iomem *regs,
689 enum tshut_polarity tshut_polarity)
690 {
691 rk_tsadcv2_initialize(grf, regs, tshut_polarity);
692 regmap_write(grf, PX30_GRF_SOC_CON2, GRF_CON_TSADC_CH_INV);
693 }
694
695 static void rk_tsadcv2_irq_ack(void __iomem *regs)
696 {
697 u32 val;
698
699 val = readl_relaxed(regs + TSADCV2_INT_PD);
700 writel_relaxed(val & TSADCV2_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD);
701 }
702
703 static void rk_tsadcv3_irq_ack(void __iomem *regs)
704 {
705 u32 val;
706
707 val = readl_relaxed(regs + TSADCV2_INT_PD);
708 writel_relaxed(val & TSADCV3_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD);
709 }
710
711 static void rk_tsadcv2_control(void __iomem *regs, bool enable)
712 {
713 u32 val;
714
715 val = readl_relaxed(regs + TSADCV2_AUTO_CON);
716 if (enable)
717 val |= TSADCV2_AUTO_EN;
718 else
719 val &= ~TSADCV2_AUTO_EN;
720
721 writel_relaxed(val, regs + TSADCV2_AUTO_CON);
722 }
723
724 /**
725 * rk_tsadcv3_control - the tsadc controller is enabled or disabled.
726 *
727 * NOTE: TSADC controller works at auto mode, and some SoCs need set the
728 * tsadc_q_sel bit on TSADCV2_AUTO_CON[1]. The (1024 - tsadc_q) as output
729 * adc value if setting this bit to enable.
730 */
731 static void rk_tsadcv3_control(void __iomem *regs, bool enable)
732 {
733 u32 val;
734
735 val = readl_relaxed(regs + TSADCV2_AUTO_CON);
736 if (enable)
737 val |= TSADCV2_AUTO_EN | TSADCV3_AUTO_Q_SEL_EN;
738 else
739 val &= ~TSADCV2_AUTO_EN;
740
741 writel_relaxed(val, regs + TSADCV2_AUTO_CON);
742 }
743
744 static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table,
745 int chn, void __iomem *regs, int *temp)
746 {
747 u32 val;
748
749 val = readl_relaxed(regs + TSADCV2_DATA(chn));
750
751 return rk_tsadcv2_code_to_temp(table, val, temp);
752 }
753
754 static int rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table,
755 int chn, void __iomem *regs, int temp)
756 {
757 u32 alarm_value;
758 u32 int_en, int_clr;
759
760 /*
761 * In some cases, some sensors didn't need the trip points, the
762 * set_trips will pass {-INT_MAX, INT_MAX} to trigger tsadc alarm
763 * in the end, ignore this case and disable the high temperature
764 * interrupt.
765 */
766 if (temp == INT_MAX) {
767 int_clr = readl_relaxed(regs + TSADCV2_INT_EN);
768 int_clr &= ~TSADCV2_INT_SRC_EN(chn);
769 writel_relaxed(int_clr, regs + TSADCV2_INT_EN);
770 return 0;
771 }
772
773 /* Make sure the value is valid */
774 alarm_value = rk_tsadcv2_temp_to_code(table, temp);
775 if (alarm_value == table->data_mask)
776 return -ERANGE;
777
778 writel_relaxed(alarm_value & table->data_mask,
779 regs + TSADCV2_COMP_INT(chn));
780
781 int_en = readl_relaxed(regs + TSADCV2_INT_EN);
782 int_en |= TSADCV2_INT_SRC_EN(chn);
783 writel_relaxed(int_en, regs + TSADCV2_INT_EN);
784
785 return 0;
786 }
787
788 static int rk_tsadcv2_tshut_temp(const struct chip_tsadc_table *table,
789 int chn, void __iomem *regs, int temp)
790 {
791 u32 tshut_value, val;
792
793 /* Make sure the value is valid */
794 tshut_value = rk_tsadcv2_temp_to_code(table, temp);
795 if (tshut_value == table->data_mask)
796 return -ERANGE;
797
798 writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn));
799
800 /* TSHUT will be valid */
801 val = readl_relaxed(regs + TSADCV2_AUTO_CON);
802 writel_relaxed(val | TSADCV2_AUTO_SRC_EN(chn), regs + TSADCV2_AUTO_CON);
803
804 return 0;
805 }
806
807 static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
808 enum tshut_mode mode)
809 {
810 u32 val;
811
812 val = readl_relaxed(regs + TSADCV2_INT_EN);
813 if (mode == TSHUT_MODE_GPIO) {
814 val &= ~TSADCV2_SHUT_2CRU_SRC_EN(chn);
815 val |= TSADCV2_SHUT_2GPIO_SRC_EN(chn);
816 } else {
817 val &= ~TSADCV2_SHUT_2GPIO_SRC_EN(chn);
818 val |= TSADCV2_SHUT_2CRU_SRC_EN(chn);
819 }
820
821 writel_relaxed(val, regs + TSADCV2_INT_EN);
822 }
823
824 static const struct rockchip_tsadc_chip px30_tsadc_data = {
825 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
826 .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
827 .chn_num = 2, /* 2 channels for tsadc */
828
829 .tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */
830 .tshut_temp = 95000,
831
832 .initialize = rk_tsadcv4_initialize,
833 .irq_ack = rk_tsadcv3_irq_ack,
834 .control = rk_tsadcv3_control,
835 .get_temp = rk_tsadcv2_get_temp,
836 .set_alarm_temp = rk_tsadcv2_alarm_temp,
837 .set_tshut_temp = rk_tsadcv2_tshut_temp,
838 .set_tshut_mode = rk_tsadcv2_tshut_mode,
839
840 .table = {
841 .id = rk3328_code_table,
842 .length = ARRAY_SIZE(rk3328_code_table),
843 .data_mask = TSADCV2_DATA_MASK,
844 .mode = ADC_INCREMENT,
845 },
846 };
847
848 static const struct rockchip_tsadc_chip rv1108_tsadc_data = {
849 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
850 .chn_num = 1, /* one channel for tsadc */
851
852 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
853 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
854 .tshut_temp = 95000,
855
856 .initialize = rk_tsadcv2_initialize,
857 .irq_ack = rk_tsadcv3_irq_ack,
858 .control = rk_tsadcv3_control,
859 .get_temp = rk_tsadcv2_get_temp,
860 .set_alarm_temp = rk_tsadcv2_alarm_temp,
861 .set_tshut_temp = rk_tsadcv2_tshut_temp,
862 .set_tshut_mode = rk_tsadcv2_tshut_mode,
863
864 .table = {
865 .id = rv1108_table,
866 .length = ARRAY_SIZE(rv1108_table),
867 .data_mask = TSADCV2_DATA_MASK,
868 .mode = ADC_INCREMENT,
869 },
870 };
871
872 static const struct rockchip_tsadc_chip rk3228_tsadc_data = {
873 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
874 .chn_num = 1, /* one channel for tsadc */
875
876 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
877 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
878 .tshut_temp = 95000,
879
880 .initialize = rk_tsadcv2_initialize,
881 .irq_ack = rk_tsadcv3_irq_ack,
882 .control = rk_tsadcv3_control,
883 .get_temp = rk_tsadcv2_get_temp,
884 .set_alarm_temp = rk_tsadcv2_alarm_temp,
885 .set_tshut_temp = rk_tsadcv2_tshut_temp,
886 .set_tshut_mode = rk_tsadcv2_tshut_mode,
887
888 .table = {
889 .id = rk3228_code_table,
890 .length = ARRAY_SIZE(rk3228_code_table),
891 .data_mask = TSADCV3_DATA_MASK,
892 .mode = ADC_INCREMENT,
893 },
894 };
895
896 static const struct rockchip_tsadc_chip rk3288_tsadc_data = {
897 .chn_id[SENSOR_CPU] = 1, /* cpu sensor is channel 1 */
898 .chn_id[SENSOR_GPU] = 2, /* gpu sensor is channel 2 */
899 .chn_num = 2, /* two channels for tsadc */
900
901 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
902 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
903 .tshut_temp = 95000,
904
905 .initialize = rk_tsadcv2_initialize,
906 .irq_ack = rk_tsadcv2_irq_ack,
907 .control = rk_tsadcv2_control,
908 .get_temp = rk_tsadcv2_get_temp,
909 .set_alarm_temp = rk_tsadcv2_alarm_temp,
910 .set_tshut_temp = rk_tsadcv2_tshut_temp,
911 .set_tshut_mode = rk_tsadcv2_tshut_mode,
912
913 .table = {
914 .id = rk3288_code_table,
915 .length = ARRAY_SIZE(rk3288_code_table),
916 .data_mask = TSADCV2_DATA_MASK,
917 .mode = ADC_DECREMENT,
918 },
919 };
920
921 static const struct rockchip_tsadc_chip rk3328_tsadc_data = {
922 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
923 .chn_num = 1, /* one channels for tsadc */
924
925 .tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */
926 .tshut_temp = 95000,
927
928 .initialize = rk_tsadcv2_initialize,
929 .irq_ack = rk_tsadcv3_irq_ack,
930 .control = rk_tsadcv3_control,
931 .get_temp = rk_tsadcv2_get_temp,
932 .set_alarm_temp = rk_tsadcv2_alarm_temp,
933 .set_tshut_temp = rk_tsadcv2_tshut_temp,
934 .set_tshut_mode = rk_tsadcv2_tshut_mode,
935
936 .table = {
937 .id = rk3328_code_table,
938 .length = ARRAY_SIZE(rk3328_code_table),
939 .data_mask = TSADCV2_DATA_MASK,
940 .mode = ADC_INCREMENT,
941 },
942 };
943
944 static const struct rockchip_tsadc_chip rk3366_tsadc_data = {
945 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
946 .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
947 .chn_num = 2, /* two channels for tsadc */
948
949 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
950 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
951 .tshut_temp = 95000,
952
953 .initialize = rk_tsadcv3_initialize,
954 .irq_ack = rk_tsadcv3_irq_ack,
955 .control = rk_tsadcv3_control,
956 .get_temp = rk_tsadcv2_get_temp,
957 .set_alarm_temp = rk_tsadcv2_alarm_temp,
958 .set_tshut_temp = rk_tsadcv2_tshut_temp,
959 .set_tshut_mode = rk_tsadcv2_tshut_mode,
960
961 .table = {
962 .id = rk3228_code_table,
963 .length = ARRAY_SIZE(rk3228_code_table),
964 .data_mask = TSADCV3_DATA_MASK,
965 .mode = ADC_INCREMENT,
966 },
967 };
968
969 static const struct rockchip_tsadc_chip rk3368_tsadc_data = {
970 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
971 .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
972 .chn_num = 2, /* two channels for tsadc */
973
974 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
975 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
976 .tshut_temp = 95000,
977
978 .initialize = rk_tsadcv2_initialize,
979 .irq_ack = rk_tsadcv2_irq_ack,
980 .control = rk_tsadcv2_control,
981 .get_temp = rk_tsadcv2_get_temp,
982 .set_alarm_temp = rk_tsadcv2_alarm_temp,
983 .set_tshut_temp = rk_tsadcv2_tshut_temp,
984 .set_tshut_mode = rk_tsadcv2_tshut_mode,
985
986 .table = {
987 .id = rk3368_code_table,
988 .length = ARRAY_SIZE(rk3368_code_table),
989 .data_mask = TSADCV3_DATA_MASK,
990 .mode = ADC_INCREMENT,
991 },
992 };
993
994 static const struct rockchip_tsadc_chip rk3399_tsadc_data = {
995 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
996 .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
997 .chn_num = 2, /* two channels for tsadc */
998
999 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
1000 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
1001 .tshut_temp = 95000,
1002
1003 .initialize = rk_tsadcv3_initialize,
1004 .irq_ack = rk_tsadcv3_irq_ack,
1005 .control = rk_tsadcv3_control,
1006 .get_temp = rk_tsadcv2_get_temp,
1007 .set_alarm_temp = rk_tsadcv2_alarm_temp,
1008 .set_tshut_temp = rk_tsadcv2_tshut_temp,
1009 .set_tshut_mode = rk_tsadcv2_tshut_mode,
1010
1011 .table = {
1012 .id = rk3399_code_table,
1013 .length = ARRAY_SIZE(rk3399_code_table),
1014 .data_mask = TSADCV3_DATA_MASK,
1015 .mode = ADC_INCREMENT,
1016 },
1017 };
1018
1019 static const struct of_device_id of_rockchip_thermal_match[] = {
1020 { .compatible = "rockchip,px30-tsadc",
1021 .data = (void *)&px30_tsadc_data,
1022 },
1023 {
1024 .compatible = "rockchip,rv1108-tsadc",
1025 .data = (void *)&rv1108_tsadc_data,
1026 },
1027 {
1028 .compatible = "rockchip,rk3228-tsadc",
1029 .data = (void *)&rk3228_tsadc_data,
1030 },
1031 {
1032 .compatible = "rockchip,rk3288-tsadc",
1033 .data = (void *)&rk3288_tsadc_data,
1034 },
1035 {
1036 .compatible = "rockchip,rk3328-tsadc",
1037 .data = (void *)&rk3328_tsadc_data,
1038 },
1039 {
1040 .compatible = "rockchip,rk3366-tsadc",
1041 .data = (void *)&rk3366_tsadc_data,
1042 },
1043 {
1044 .compatible = "rockchip,rk3368-tsadc",
1045 .data = (void *)&rk3368_tsadc_data,
1046 },
1047 {
1048 .compatible = "rockchip,rk3399-tsadc",
1049 .data = (void *)&rk3399_tsadc_data,
1050 },
1051 { /* end */ },
1052 };
1053 MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match);
1054
1055 static void
1056 rockchip_thermal_toggle_sensor(struct rockchip_thermal_sensor *sensor, bool on)
1057 {
1058 struct thermal_zone_device *tzd = sensor->tzd;
1059
1060 tzd->ops->set_mode(tzd,
1061 on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED);
1062 }
1063
1064 static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev)
1065 {
1066 struct rockchip_thermal_data *thermal = dev;
1067 int i;
1068
1069 dev_dbg(&thermal->pdev->dev, "thermal alarm\n");
1070
1071 thermal->chip->irq_ack(thermal->regs);
1072
1073 for (i = 0; i < thermal->chip->chn_num; i++)
1074 thermal_zone_device_update(thermal->sensors[i].tzd,
1075 THERMAL_EVENT_UNSPECIFIED);
1076
1077 return IRQ_HANDLED;
1078 }
1079
1080 static int rockchip_thermal_set_trips(void *_sensor, int low, int high)
1081 {
1082 struct rockchip_thermal_sensor *sensor = _sensor;
1083 struct rockchip_thermal_data *thermal = sensor->thermal;
1084 const struct rockchip_tsadc_chip *tsadc = thermal->chip;
1085
1086 dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %d, high %d\n",
1087 __func__, sensor->id, low, high);
1088
1089 return tsadc->set_alarm_temp(&tsadc->table,
1090 sensor->id, thermal->regs, high);
1091 }
1092
1093 static int rockchip_thermal_get_temp(void *_sensor, int *out_temp)
1094 {
1095 struct rockchip_thermal_sensor *sensor = _sensor;
1096 struct rockchip_thermal_data *thermal = sensor->thermal;
1097 const struct rockchip_tsadc_chip *tsadc = sensor->thermal->chip;
1098 int retval;
1099
1100 retval = tsadc->get_temp(&tsadc->table,
1101 sensor->id, thermal->regs, out_temp);
1102 dev_dbg(&thermal->pdev->dev, "sensor %d - temp: %d, retval: %d\n",
1103 sensor->id, *out_temp, retval);
1104
1105 return retval;
1106 }
1107
1108 static const struct thermal_zone_of_device_ops rockchip_of_thermal_ops = {
1109 .get_temp = rockchip_thermal_get_temp,
1110 .set_trips = rockchip_thermal_set_trips,
1111 };
1112
1113 static int rockchip_configure_from_dt(struct device *dev,
1114 struct device_node *np,
1115 struct rockchip_thermal_data *thermal)
1116 {
1117 u32 shut_temp, tshut_mode, tshut_polarity;
1118
1119 if (of_property_read_u32(np, "rockchip,hw-tshut-temp", &shut_temp)) {
1120 dev_warn(dev,
1121 "Missing tshut temp property, using default %d\n",
1122 thermal->chip->tshut_temp);
1123 thermal->tshut_temp = thermal->chip->tshut_temp;
1124 } else {
1125 if (shut_temp > INT_MAX) {
1126 dev_err(dev, "Invalid tshut temperature specified: %d\n",
1127 shut_temp);
1128 return -ERANGE;
1129 }
1130 thermal->tshut_temp = shut_temp;
1131 }
1132
1133 if (of_property_read_u32(np, "rockchip,hw-tshut-mode", &tshut_mode)) {
1134 dev_warn(dev,
1135 "Missing tshut mode property, using default (%s)\n",
1136 thermal->chip->tshut_mode == TSHUT_MODE_GPIO ?
1137 "gpio" : "cru");
1138 thermal->tshut_mode = thermal->chip->tshut_mode;
1139 } else {
1140 thermal->tshut_mode = tshut_mode;
1141 }
1142
1143 if (thermal->tshut_mode > 1) {
1144 dev_err(dev, "Invalid tshut mode specified: %d\n",
1145 thermal->tshut_mode);
1146 return -EINVAL;
1147 }
1148
1149 if (of_property_read_u32(np, "rockchip,hw-tshut-polarity",
1150 &tshut_polarity)) {
1151 dev_warn(dev,
1152 "Missing tshut-polarity property, using default (%s)\n",
1153 thermal->chip->tshut_polarity == TSHUT_LOW_ACTIVE ?
1154 "low" : "high");
1155 thermal->tshut_polarity = thermal->chip->tshut_polarity;
1156 } else {
1157 thermal->tshut_polarity = tshut_polarity;
1158 }
1159
1160 if (thermal->tshut_polarity > 1) {
1161 dev_err(dev, "Invalid tshut-polarity specified: %d\n",
1162 thermal->tshut_polarity);
1163 return -EINVAL;
1164 }
1165
1166 /* The tsadc wont to handle the error in here since some SoCs didn't
1167 * need this property.
1168 */
1169 thermal->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
1170 if (IS_ERR(thermal->grf))
1171 dev_warn(dev, "Missing rockchip,grf property\n");
1172
1173 return 0;
1174 }
1175
1176 static int
1177 rockchip_thermal_register_sensor(struct platform_device *pdev,
1178 struct rockchip_thermal_data *thermal,
1179 struct rockchip_thermal_sensor *sensor,
1180 int id)
1181 {
1182 const struct rockchip_tsadc_chip *tsadc = thermal->chip;
1183 int error;
1184
1185 tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode);
1186
1187 error = tsadc->set_tshut_temp(&tsadc->table, id, thermal->regs,
1188 thermal->tshut_temp);
1189 if (error)
1190 dev_err(&pdev->dev, "%s: invalid tshut=%d, error=%d\n",
1191 __func__, thermal->tshut_temp, error);
1192
1193 sensor->thermal = thermal;
1194 sensor->id = id;
1195 sensor->tzd = devm_thermal_zone_of_sensor_register(&pdev->dev, id,
1196 sensor, &rockchip_of_thermal_ops);
1197 if (IS_ERR(sensor->tzd)) {
1198 error = PTR_ERR(sensor->tzd);
1199 dev_err(&pdev->dev, "failed to register sensor %d: %d\n",
1200 id, error);
1201 return error;
1202 }
1203
1204 return 0;
1205 }
1206
1207 /**
1208 * Reset TSADC Controller, reset all tsadc registers.
1209 */
1210 static void rockchip_thermal_reset_controller(struct reset_control *reset)
1211 {
1212 reset_control_assert(reset);
1213 usleep_range(10, 20);
1214 reset_control_deassert(reset);
1215 }
1216
1217 static int rockchip_thermal_probe(struct platform_device *pdev)
1218 {
1219 struct device_node *np = pdev->dev.of_node;
1220 struct rockchip_thermal_data *thermal;
1221 const struct of_device_id *match;
1222 struct resource *res;
1223 int irq;
1224 int i;
1225 int error;
1226
1227 match = of_match_node(of_rockchip_thermal_match, np);
1228 if (!match)
1229 return -ENXIO;
1230
1231 irq = platform_get_irq(pdev, 0);
1232 if (irq < 0) {
1233 dev_err(&pdev->dev, "no irq resource?\n");
1234 return -EINVAL;
1235 }
1236
1237 thermal = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_thermal_data),
1238 GFP_KERNEL);
1239 if (!thermal)
1240 return -ENOMEM;
1241
1242 thermal->pdev = pdev;
1243
1244 thermal->chip = (const struct rockchip_tsadc_chip *)match->data;
1245 if (!thermal->chip)
1246 return -EINVAL;
1247
1248 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1249 thermal->regs = devm_ioremap_resource(&pdev->dev, res);
1250 if (IS_ERR(thermal->regs))
1251 return PTR_ERR(thermal->regs);
1252
1253 thermal->reset = devm_reset_control_get(&pdev->dev, "tsadc-apb");
1254 if (IS_ERR(thermal->reset)) {
1255 error = PTR_ERR(thermal->reset);
1256 dev_err(&pdev->dev, "failed to get tsadc reset: %d\n", error);
1257 return error;
1258 }
1259
1260 thermal->clk = devm_clk_get(&pdev->dev, "tsadc");
1261 if (IS_ERR(thermal->clk)) {
1262 error = PTR_ERR(thermal->clk);
1263 dev_err(&pdev->dev, "failed to get tsadc clock: %d\n", error);
1264 return error;
1265 }
1266
1267 thermal->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
1268 if (IS_ERR(thermal->pclk)) {
1269 error = PTR_ERR(thermal->pclk);
1270 dev_err(&pdev->dev, "failed to get apb_pclk clock: %d\n",
1271 error);
1272 return error;
1273 }
1274
1275 error = clk_prepare_enable(thermal->clk);
1276 if (error) {
1277 dev_err(&pdev->dev, "failed to enable converter clock: %d\n",
1278 error);
1279 return error;
1280 }
1281
1282 error = clk_prepare_enable(thermal->pclk);
1283 if (error) {
1284 dev_err(&pdev->dev, "failed to enable pclk: %d\n", error);
1285 goto err_disable_clk;
1286 }
1287
1288 rockchip_thermal_reset_controller(thermal->reset);
1289
1290 error = rockchip_configure_from_dt(&pdev->dev, np, thermal);
1291 if (error) {
1292 dev_err(&pdev->dev, "failed to parse device tree data: %d\n",
1293 error);
1294 goto err_disable_pclk;
1295 }
1296
1297 thermal->chip->initialize(thermal->grf, thermal->regs,
1298 thermal->tshut_polarity);
1299
1300 for (i = 0; i < thermal->chip->chn_num; i++) {
1301 error = rockchip_thermal_register_sensor(pdev, thermal,
1302 &thermal->sensors[i],
1303 thermal->chip->chn_id[i]);
1304 if (error) {
1305 dev_err(&pdev->dev,
1306 "failed to register sensor[%d] : error = %d\n",
1307 i, error);
1308 goto err_disable_pclk;
1309 }
1310 }
1311
1312 error = devm_request_threaded_irq(&pdev->dev, irq, NULL,
1313 &rockchip_thermal_alarm_irq_thread,
1314 IRQF_ONESHOT,
1315 "rockchip_thermal", thermal);
1316 if (error) {
1317 dev_err(&pdev->dev,
1318 "failed to request tsadc irq: %d\n", error);
1319 goto err_disable_pclk;
1320 }
1321
1322 thermal->chip->control(thermal->regs, true);
1323
1324 for (i = 0; i < thermal->chip->chn_num; i++)
1325 rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
1326
1327 platform_set_drvdata(pdev, thermal);
1328
1329 return 0;
1330
1331 err_disable_pclk:
1332 clk_disable_unprepare(thermal->pclk);
1333 err_disable_clk:
1334 clk_disable_unprepare(thermal->clk);
1335
1336 return error;
1337 }
1338
1339 static int rockchip_thermal_remove(struct platform_device *pdev)
1340 {
1341 struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
1342 int i;
1343
1344 for (i = 0; i < thermal->chip->chn_num; i++) {
1345 struct rockchip_thermal_sensor *sensor = &thermal->sensors[i];
1346
1347 rockchip_thermal_toggle_sensor(sensor, false);
1348 }
1349
1350 thermal->chip->control(thermal->regs, false);
1351
1352 clk_disable_unprepare(thermal->pclk);
1353 clk_disable_unprepare(thermal->clk);
1354
1355 return 0;
1356 }
1357
1358 static int __maybe_unused rockchip_thermal_suspend(struct device *dev)
1359 {
1360 struct rockchip_thermal_data *thermal = dev_get_drvdata(dev);
1361 int i;
1362
1363 for (i = 0; i < thermal->chip->chn_num; i++)
1364 rockchip_thermal_toggle_sensor(&thermal->sensors[i], false);
1365
1366 thermal->chip->control(thermal->regs, false);
1367
1368 clk_disable(thermal->pclk);
1369 clk_disable(thermal->clk);
1370
1371 pinctrl_pm_select_sleep_state(dev);
1372
1373 return 0;
1374 }
1375
1376 static int __maybe_unused rockchip_thermal_resume(struct device *dev)
1377 {
1378 struct rockchip_thermal_data *thermal = dev_get_drvdata(dev);
1379 int i;
1380 int error;
1381
1382 error = clk_enable(thermal->clk);
1383 if (error)
1384 return error;
1385
1386 error = clk_enable(thermal->pclk);
1387 if (error) {
1388 clk_disable(thermal->clk);
1389 return error;
1390 }
1391
1392 rockchip_thermal_reset_controller(thermal->reset);
1393
1394 thermal->chip->initialize(thermal->grf, thermal->regs,
1395 thermal->tshut_polarity);
1396
1397 for (i = 0; i < thermal->chip->chn_num; i++) {
1398 int id = thermal->sensors[i].id;
1399
1400 thermal->chip->set_tshut_mode(id, thermal->regs,
1401 thermal->tshut_mode);
1402
1403 error = thermal->chip->set_tshut_temp(&thermal->chip->table,
1404 id, thermal->regs,
1405 thermal->tshut_temp);
1406 if (error)
1407 dev_err(dev, "%s: invalid tshut=%d, error=%d\n",
1408 __func__, thermal->tshut_temp, error);
1409 }
1410
1411 thermal->chip->control(thermal->regs, true);
1412
1413 for (i = 0; i < thermal->chip->chn_num; i++)
1414 rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
1415
1416 pinctrl_pm_select_default_state(dev);
1417
1418 return 0;
1419 }
1420
1421 static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops,
1422 rockchip_thermal_suspend, rockchip_thermal_resume);
1423
1424 static struct platform_driver rockchip_thermal_driver = {
1425 .driver = {
1426 .name = "rockchip-thermal",
1427 .pm = &rockchip_thermal_pm_ops,
1428 .of_match_table = of_rockchip_thermal_match,
1429 },
1430 .probe = rockchip_thermal_probe,
1431 .remove = rockchip_thermal_remove,
1432 };
1433
1434 module_platform_driver(rockchip_thermal_driver);
1435
1436 MODULE_DESCRIPTION("ROCKCHIP THERMAL Driver");
1437 MODULE_AUTHOR("Rockchip, Inc.");
1438 MODULE_LICENSE("GPL v2");
1439 MODULE_ALIAS("platform:rockchip-thermal");
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