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 conversion table has the adc value and temperature. |
44 | * ADC_DECREMENT: the adc value is of diminishing.(e.g. rk3288_code_table) |
45 | * ADC_INCREMENT: the adc value is incremental.(e.g. rk3368_code_table) |
46 | */ |
47 | enum adc_sort_mode { |
48 | ADC_DECREMENT = 0, |
49 | ADC_INCREMENT, |
50 | }; |
51 | |
52 | #include "thermal_hwmon.h" |
53 | |
54 | /** |
55 | * struct chip_tsadc_table - hold information about chip-specific differences |
56 | * @id: conversion table |
57 | * @length: size of conversion table |
58 | * @data_mask: mask to apply on data inputs |
59 | * @mode: sort mode of this adc variant (incrementing or decrementing) |
60 | */ |
61 | struct chip_tsadc_table { |
62 | const struct tsadc_table *id; |
63 | unsigned int length; |
64 | u32 data_mask; |
65 | enum adc_sort_mode mode; |
66 | }; |
67 | |
68 | /** |
69 | * struct rockchip_tsadc_chip - hold the private data of tsadc chip |
70 | * @chn_offset: the channel offset of the first channel |
71 | * @chn_num: the channel number of tsadc chip |
72 | * @tshut_temp: the hardware-controlled shutdown temperature value |
73 | * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO) |
74 | * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH) |
75 | * @initialize: SoC special initialize tsadc controller method |
76 | * @irq_ack: clear the interrupt |
77 | * @control: enable/disable method for the tsadc controller |
78 | * @get_temp: get the temperature |
79 | * @set_alarm_temp: set the high temperature interrupt |
80 | * @set_tshut_temp: set the hardware-controlled shutdown temperature |
81 | * @set_tshut_mode: set the hardware-controlled shutdown mode |
82 | * @table: the chip-specific conversion table |
83 | */ |
84 | struct rockchip_tsadc_chip { |
85 | /* The sensor id of chip correspond to the ADC channel */ |
86 | int chn_offset; |
87 | int chn_num; |
88 | |
89 | /* The hardware-controlled tshut property */ |
90 | int tshut_temp; |
91 | enum tshut_mode tshut_mode; |
92 | enum tshut_polarity tshut_polarity; |
93 | |
94 | /* Chip-wide methods */ |
95 | void (*initialize)(struct regmap *grf, |
96 | void __iomem *reg, enum tshut_polarity p); |
97 | void (*irq_ack)(void __iomem *reg); |
98 | void (*control)(void __iomem *reg, bool on); |
99 | |
100 | /* Per-sensor methods */ |
101 | int (*get_temp)(const struct chip_tsadc_table *table, |
102 | int chn, void __iomem *reg, int *temp); |
103 | int (*set_alarm_temp)(const struct chip_tsadc_table *table, |
104 | int chn, void __iomem *reg, int temp); |
105 | int (*set_tshut_temp)(const struct chip_tsadc_table *table, |
106 | int chn, void __iomem *reg, int temp); |
107 | void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m); |
108 | |
109 | /* Per-table methods */ |
110 | struct chip_tsadc_table table; |
111 | }; |
112 | |
113 | /** |
114 | * struct rockchip_thermal_sensor - hold the information of thermal sensor |
115 | * @thermal: pointer to the platform/configuration data |
116 | * @tzd: pointer to a thermal zone |
117 | * @id: identifier of the thermal sensor |
118 | */ |
119 | struct rockchip_thermal_sensor { |
120 | struct rockchip_thermal_data *thermal; |
121 | struct thermal_zone_device *tzd; |
122 | int id; |
123 | }; |
124 | |
125 | /** |
126 | * struct rockchip_thermal_data - hold the private data of thermal driver |
127 | * @chip: pointer to the platform/configuration data |
128 | * @pdev: platform device of thermal |
129 | * @reset: the reset controller of tsadc |
130 | * @sensors: array of thermal sensors |
131 | * @clk: the controller clock is divided by the exteral 24MHz |
132 | * @pclk: the advanced peripherals bus clock |
133 | * @grf: the general register file will be used to do static set by software |
134 | * @regs: the base address of tsadc controller |
135 | * @tshut_temp: the hardware-controlled shutdown temperature value |
136 | * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO) |
137 | * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH) |
138 | */ |
139 | struct rockchip_thermal_data { |
140 | const struct rockchip_tsadc_chip *chip; |
141 | struct platform_device *pdev; |
142 | struct reset_control *reset; |
143 | |
144 | struct rockchip_thermal_sensor *sensors; |
145 | |
146 | struct clk *clk; |
147 | struct clk *pclk; |
148 | |
149 | struct regmap *grf; |
150 | void __iomem *regs; |
151 | |
152 | int tshut_temp; |
153 | enum tshut_mode tshut_mode; |
154 | enum tshut_polarity tshut_polarity; |
155 | }; |
156 | |
157 | /* |
158 | * TSADC Sensor Register description: |
159 | * |
160 | * TSADCV2_* are used for RK3288 SoCs, the other chips can reuse it. |
161 | * TSADCV3_* are used for newer SoCs than RK3288. (e.g: RK3228, RK3399) |
162 | * |
163 | */ |
164 | #define TSADCV2_USER_CON 0x00 |
165 | #define TSADCV2_AUTO_CON 0x04 |
166 | #define TSADCV2_INT_EN 0x08 |
167 | #define TSADCV2_INT_PD 0x0c |
168 | #define TSADCV3_AUTO_SRC_CON 0x0c |
169 | #define TSADCV3_HT_INT_EN 0x14 |
170 | #define TSADCV3_HSHUT_GPIO_INT_EN 0x18 |
171 | #define TSADCV3_HSHUT_CRU_INT_EN 0x1c |
172 | #define TSADCV3_INT_PD 0x24 |
173 | #define TSADCV3_HSHUT_PD 0x28 |
174 | #define TSADCV2_DATA(chn) (0x20 + (chn) * 0x04) |
175 | #define TSADCV2_COMP_INT(chn) (0x30 + (chn) * 0x04) |
176 | #define TSADCV2_COMP_SHUT(chn) (0x40 + (chn) * 0x04) |
177 | #define TSADCV3_DATA(chn) (0x2c + (chn) * 0x04) |
178 | #define TSADCV3_COMP_INT(chn) (0x6c + (chn) * 0x04) |
179 | #define TSADCV3_COMP_SHUT(chn) (0x10c + (chn) * 0x04) |
180 | #define TSADCV2_HIGHT_INT_DEBOUNCE 0x60 |
181 | #define TSADCV2_HIGHT_TSHUT_DEBOUNCE 0x64 |
182 | #define TSADCV3_HIGHT_INT_DEBOUNCE 0x14c |
183 | #define TSADCV3_HIGHT_TSHUT_DEBOUNCE 0x150 |
184 | #define TSADCV2_AUTO_PERIOD 0x68 |
185 | #define TSADCV2_AUTO_PERIOD_HT 0x6c |
186 | #define TSADCV3_AUTO_PERIOD 0x154 |
187 | #define TSADCV3_AUTO_PERIOD_HT 0x158 |
188 | |
189 | #define TSADCV2_AUTO_EN BIT(0) |
190 | #define TSADCV2_AUTO_EN_MASK BIT(16) |
191 | #define TSADCV2_AUTO_SRC_EN(chn) BIT(4 + (chn)) |
192 | #define TSADCV3_AUTO_SRC_EN(chn) BIT(chn) |
193 | #define TSADCV3_AUTO_SRC_EN_MASK(chn) BIT(16 + chn) |
194 | #define TSADCV2_AUTO_TSHUT_POLARITY_HIGH BIT(8) |
195 | #define TSADCV2_AUTO_TSHUT_POLARITY_MASK BIT(24) |
196 | |
197 | #define TSADCV3_AUTO_Q_SEL_EN BIT(1) |
198 | |
199 | #define TSADCV2_INT_SRC_EN(chn) BIT(chn) |
200 | #define TSADCV2_INT_SRC_EN_MASK(chn) BIT(16 + (chn)) |
201 | #define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn)) |
202 | #define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn)) |
203 | |
204 | #define TSADCV2_INT_PD_CLEAR_MASK ~BIT(8) |
205 | #define TSADCV3_INT_PD_CLEAR_MASK ~BIT(16) |
206 | #define TSADCV4_INT_PD_CLEAR_MASK 0xffffffff |
207 | |
208 | #define TSADCV2_DATA_MASK 0xfff |
209 | #define TSADCV3_DATA_MASK 0x3ff |
210 | #define TSADCV4_DATA_MASK 0x1ff |
211 | |
212 | #define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT 4 |
213 | #define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT 4 |
214 | #define TSADCV2_AUTO_PERIOD_TIME 250 /* 250ms */ |
215 | #define TSADCV2_AUTO_PERIOD_HT_TIME 50 /* 50ms */ |
216 | #define TSADCV3_AUTO_PERIOD_TIME 1875 /* 2.5ms */ |
217 | #define TSADCV3_AUTO_PERIOD_HT_TIME 1875 /* 2.5ms */ |
218 | |
219 | #define TSADCV5_AUTO_PERIOD_TIME 1622 /* 2.5ms */ |
220 | #define TSADCV5_AUTO_PERIOD_HT_TIME 1622 /* 2.5ms */ |
221 | #define TSADCV6_AUTO_PERIOD_TIME 5000 /* 2.5ms */ |
222 | #define TSADCV6_AUTO_PERIOD_HT_TIME 5000 /* 2.5ms */ |
223 | |
224 | #define TSADCV2_USER_INTER_PD_SOC 0x340 /* 13 clocks */ |
225 | #define TSADCV5_USER_INTER_PD_SOC 0xfc0 /* 97us, at least 90us */ |
226 | |
227 | #define GRF_SARADC_TESTBIT 0x0e644 |
228 | #define GRF_TSADC_TESTBIT_L 0x0e648 |
229 | #define GRF_TSADC_TESTBIT_H 0x0e64c |
230 | |
231 | #define PX30_GRF_SOC_CON2 0x0408 |
232 | |
233 | #define RK3568_GRF_TSADC_CON 0x0600 |
234 | #define RK3568_GRF_TSADC_ANA_REG0 (0x10001 << 0) |
235 | #define RK3568_GRF_TSADC_ANA_REG1 (0x10001 << 1) |
236 | #define RK3568_GRF_TSADC_ANA_REG2 (0x10001 << 2) |
237 | #define RK3568_GRF_TSADC_TSEN (0x10001 << 8) |
238 | |
239 | #define RK3588_GRF0_TSADC_CON 0x0100 |
240 | |
241 | #define RK3588_GRF0_TSADC_TRM (0xff0077 << 0) |
242 | #define RK3588_GRF0_TSADC_SHUT_2CRU (0x30003 << 10) |
243 | #define RK3588_GRF0_TSADC_SHUT_2GPIO (0x70007 << 12) |
244 | |
245 | #define GRF_SARADC_TESTBIT_ON (0x10001 << 2) |
246 | #define GRF_TSADC_TESTBIT_H_ON (0x10001 << 2) |
247 | #define GRF_TSADC_VCM_EN_L (0x10001 << 7) |
248 | #define GRF_TSADC_VCM_EN_H (0x10001 << 7) |
249 | |
250 | #define GRF_CON_TSADC_CH_INV (0x10001 << 1) |
251 | |
252 | /** |
253 | * struct tsadc_table - code to temperature conversion table |
254 | * @code: the value of adc channel |
255 | * @temp: the temperature |
256 | * Note: |
257 | * code to temperature mapping of the temperature sensor is a piece wise linear |
258 | * curve.Any temperature, code faling between to 2 give temperatures can be |
259 | * linearly interpolated. |
260 | * Code to Temperature mapping should be updated based on manufacturer results. |
261 | */ |
262 | struct tsadc_table { |
263 | u32 code; |
264 | int temp; |
265 | }; |
266 | |
267 | static const struct tsadc_table rv1108_table[] = { |
268 | {0, -40000}, |
269 | {374, -40000}, |
270 | {382, -35000}, |
271 | {389, -30000}, |
272 | {397, -25000}, |
273 | {405, -20000}, |
274 | {413, -15000}, |
275 | {421, -10000}, |
276 | {429, -5000}, |
277 | {436, 0}, |
278 | {444, 5000}, |
279 | {452, 10000}, |
280 | {460, 15000}, |
281 | {468, 20000}, |
282 | {476, 25000}, |
283 | {483, 30000}, |
284 | {491, 35000}, |
285 | {499, 40000}, |
286 | {507, 45000}, |
287 | {515, 50000}, |
288 | {523, 55000}, |
289 | {531, 60000}, |
290 | {539, 65000}, |
291 | {547, 70000}, |
292 | {555, 75000}, |
293 | {562, 80000}, |
294 | {570, 85000}, |
295 | {578, 90000}, |
296 | {586, 95000}, |
297 | {594, 100000}, |
298 | {602, 105000}, |
299 | {610, 110000}, |
300 | {618, 115000}, |
301 | {626, 120000}, |
302 | {634, 125000}, |
303 | {TSADCV2_DATA_MASK, 125000}, |
304 | }; |
305 | |
306 | static const struct tsadc_table rk3228_code_table[] = { |
307 | {0, -40000}, |
308 | {588, -40000}, |
309 | {593, -35000}, |
310 | {598, -30000}, |
311 | {603, -25000}, |
312 | {608, -20000}, |
313 | {613, -15000}, |
314 | {618, -10000}, |
315 | {623, -5000}, |
316 | {629, 0}, |
317 | {634, 5000}, |
318 | {639, 10000}, |
319 | {644, 15000}, |
320 | {649, 20000}, |
321 | {654, 25000}, |
322 | {660, 30000}, |
323 | {665, 35000}, |
324 | {670, 40000}, |
325 | {675, 45000}, |
326 | {681, 50000}, |
327 | {686, 55000}, |
328 | {691, 60000}, |
329 | {696, 65000}, |
330 | {702, 70000}, |
331 | {707, 75000}, |
332 | {712, 80000}, |
333 | {717, 85000}, |
334 | {723, 90000}, |
335 | {728, 95000}, |
336 | {733, 100000}, |
337 | {738, 105000}, |
338 | {744, 110000}, |
339 | {749, 115000}, |
340 | {754, 120000}, |
341 | {760, 125000}, |
342 | {TSADCV2_DATA_MASK, 125000}, |
343 | }; |
344 | |
345 | static const struct tsadc_table rk3288_code_table[] = { |
346 | {TSADCV2_DATA_MASK, -40000}, |
347 | {3800, -40000}, |
348 | {3792, -35000}, |
349 | {3783, -30000}, |
350 | {3774, -25000}, |
351 | {3765, -20000}, |
352 | {3756, -15000}, |
353 | {3747, -10000}, |
354 | {3737, -5000}, |
355 | {3728, 0}, |
356 | {3718, 5000}, |
357 | {3708, 10000}, |
358 | {3698, 15000}, |
359 | {3688, 20000}, |
360 | {3678, 25000}, |
361 | {3667, 30000}, |
362 | {3656, 35000}, |
363 | {3645, 40000}, |
364 | {3634, 45000}, |
365 | {3623, 50000}, |
366 | {3611, 55000}, |
367 | {3600, 60000}, |
368 | {3588, 65000}, |
369 | {3575, 70000}, |
370 | {3563, 75000}, |
371 | {3550, 80000}, |
372 | {3537, 85000}, |
373 | {3524, 90000}, |
374 | {3510, 95000}, |
375 | {3496, 100000}, |
376 | {3482, 105000}, |
377 | {3467, 110000}, |
378 | {3452, 115000}, |
379 | {3437, 120000}, |
380 | {3421, 125000}, |
381 | {0, 125000}, |
382 | }; |
383 | |
384 | static const struct tsadc_table rk3328_code_table[] = { |
385 | {0, -40000}, |
386 | {296, -40000}, |
387 | {304, -35000}, |
388 | {313, -30000}, |
389 | {331, -20000}, |
390 | {340, -15000}, |
391 | {349, -10000}, |
392 | {359, -5000}, |
393 | {368, 0}, |
394 | {378, 5000}, |
395 | {388, 10000}, |
396 | {398, 15000}, |
397 | {408, 20000}, |
398 | {418, 25000}, |
399 | {429, 30000}, |
400 | {440, 35000}, |
401 | {451, 40000}, |
402 | {462, 45000}, |
403 | {473, 50000}, |
404 | {485, 55000}, |
405 | {496, 60000}, |
406 | {508, 65000}, |
407 | {521, 70000}, |
408 | {533, 75000}, |
409 | {546, 80000}, |
410 | {559, 85000}, |
411 | {572, 90000}, |
412 | {586, 95000}, |
413 | {600, 100000}, |
414 | {614, 105000}, |
415 | {629, 110000}, |
416 | {644, 115000}, |
417 | {659, 120000}, |
418 | {675, 125000}, |
419 | {TSADCV2_DATA_MASK, 125000}, |
420 | }; |
421 | |
422 | static const struct tsadc_table rk3368_code_table[] = { |
423 | {0, -40000}, |
424 | {106, -40000}, |
425 | {108, -35000}, |
426 | {110, -30000}, |
427 | {112, -25000}, |
428 | {114, -20000}, |
429 | {116, -15000}, |
430 | {118, -10000}, |
431 | {120, -5000}, |
432 | {122, 0}, |
433 | {124, 5000}, |
434 | {126, 10000}, |
435 | {128, 15000}, |
436 | {130, 20000}, |
437 | {132, 25000}, |
438 | {134, 30000}, |
439 | {136, 35000}, |
440 | {138, 40000}, |
441 | {140, 45000}, |
442 | {142, 50000}, |
443 | {144, 55000}, |
444 | {146, 60000}, |
445 | {148, 65000}, |
446 | {150, 70000}, |
447 | {152, 75000}, |
448 | {154, 80000}, |
449 | {156, 85000}, |
450 | {158, 90000}, |
451 | {160, 95000}, |
452 | {162, 100000}, |
453 | {163, 105000}, |
454 | {165, 110000}, |
455 | {167, 115000}, |
456 | {169, 120000}, |
457 | {171, 125000}, |
458 | {TSADCV3_DATA_MASK, 125000}, |
459 | }; |
460 | |
461 | static const struct tsadc_table rk3399_code_table[] = { |
462 | {0, -40000}, |
463 | {402, -40000}, |
464 | {410, -35000}, |
465 | {419, -30000}, |
466 | {427, -25000}, |
467 | {436, -20000}, |
468 | {444, -15000}, |
469 | {453, -10000}, |
470 | {461, -5000}, |
471 | {470, 0}, |
472 | {478, 5000}, |
473 | {487, 10000}, |
474 | {496, 15000}, |
475 | {504, 20000}, |
476 | {513, 25000}, |
477 | {521, 30000}, |
478 | {530, 35000}, |
479 | {538, 40000}, |
480 | {547, 45000}, |
481 | {555, 50000}, |
482 | {564, 55000}, |
483 | {573, 60000}, |
484 | {581, 65000}, |
485 | {590, 70000}, |
486 | {599, 75000}, |
487 | {607, 80000}, |
488 | {616, 85000}, |
489 | {624, 90000}, |
490 | {633, 95000}, |
491 | {642, 100000}, |
492 | {650, 105000}, |
493 | {659, 110000}, |
494 | {668, 115000}, |
495 | {677, 120000}, |
496 | {685, 125000}, |
497 | {TSADCV3_DATA_MASK, 125000}, |
498 | }; |
499 | |
500 | static const struct tsadc_table rk3568_code_table[] = { |
501 | {0, -40000}, |
502 | {1584, -40000}, |
503 | {1620, -35000}, |
504 | {1652, -30000}, |
505 | {1688, -25000}, |
506 | {1720, -20000}, |
507 | {1756, -15000}, |
508 | {1788, -10000}, |
509 | {1824, -5000}, |
510 | {1856, 0}, |
511 | {1892, 5000}, |
512 | {1924, 10000}, |
513 | {1956, 15000}, |
514 | {1992, 20000}, |
515 | {2024, 25000}, |
516 | {2060, 30000}, |
517 | {2092, 35000}, |
518 | {2128, 40000}, |
519 | {2160, 45000}, |
520 | {2196, 50000}, |
521 | {2228, 55000}, |
522 | {2264, 60000}, |
523 | {2300, 65000}, |
524 | {2332, 70000}, |
525 | {2368, 75000}, |
526 | {2400, 80000}, |
527 | {2436, 85000}, |
528 | {2468, 90000}, |
529 | {2500, 95000}, |
530 | {2536, 100000}, |
531 | {2572, 105000}, |
532 | {2604, 110000}, |
533 | {2636, 115000}, |
534 | {2672, 120000}, |
535 | {2704, 125000}, |
536 | {TSADCV2_DATA_MASK, 125000}, |
537 | }; |
538 | |
539 | static const struct tsadc_table rk3588_code_table[] = { |
540 | {0, -40000}, |
541 | {215, -40000}, |
542 | {285, 25000}, |
543 | {350, 85000}, |
544 | {395, 125000}, |
545 | {TSADCV4_DATA_MASK, 125000}, |
546 | }; |
547 | |
548 | static u32 rk_tsadcv2_temp_to_code(const struct chip_tsadc_table *table, |
549 | int temp) |
550 | { |
551 | int high, low, mid; |
552 | unsigned long num; |
553 | unsigned int denom; |
554 | u32 error = table->data_mask; |
555 | |
556 | low = 0; |
557 | high = (table->length - 1) - 1; /* ignore the last check for table */ |
558 | mid = (high + low) / 2; |
559 | |
560 | /* Return mask code data when the temp is over table range */ |
561 | if (temp < table->id[low].temp || temp > table->id[high].temp) |
562 | goto exit; |
563 | |
564 | while (low <= high) { |
565 | if (temp == table->id[mid].temp) |
566 | return table->id[mid].code; |
567 | else if (temp < table->id[mid].temp) |
568 | high = mid - 1; |
569 | else |
570 | low = mid + 1; |
571 | mid = (low + high) / 2; |
572 | } |
573 | |
574 | /* |
575 | * The conversion code granularity provided by the table. Let's |
576 | * assume that the relationship between temperature and |
577 | * analog value between 2 table entries is linear and interpolate |
578 | * to produce less granular result. |
579 | */ |
580 | num = abs(table->id[mid + 1].code - table->id[mid].code); |
581 | num *= temp - table->id[mid].temp; |
582 | denom = table->id[mid + 1].temp - table->id[mid].temp; |
583 | |
584 | switch (table->mode) { |
585 | case ADC_DECREMENT: |
586 | return table->id[mid].code - (num / denom); |
587 | case ADC_INCREMENT: |
588 | return table->id[mid].code + (num / denom); |
589 | default: |
590 | pr_err("%s: unknown table mode: %d\n" , __func__, table->mode); |
591 | return error; |
592 | } |
593 | |
594 | exit: |
595 | pr_err("%s: invalid temperature, temp=%d error=%d\n" , |
596 | __func__, temp, error); |
597 | return error; |
598 | } |
599 | |
600 | static int rk_tsadcv2_code_to_temp(const struct chip_tsadc_table *table, |
601 | u32 code, int *temp) |
602 | { |
603 | unsigned int low = 1; |
604 | unsigned int high = table->length - 1; |
605 | unsigned int mid = (low + high) / 2; |
606 | unsigned int num; |
607 | unsigned long denom; |
608 | |
609 | WARN_ON(table->length < 2); |
610 | |
611 | switch (table->mode) { |
612 | case ADC_DECREMENT: |
613 | code &= table->data_mask; |
614 | if (code <= table->id[high].code) |
615 | return -EAGAIN; /* Incorrect reading */ |
616 | |
617 | while (low <= high) { |
618 | if (code >= table->id[mid].code && |
619 | code < table->id[mid - 1].code) |
620 | break; |
621 | else if (code < table->id[mid].code) |
622 | low = mid + 1; |
623 | else |
624 | high = mid - 1; |
625 | |
626 | mid = (low + high) / 2; |
627 | } |
628 | break; |
629 | case ADC_INCREMENT: |
630 | code &= table->data_mask; |
631 | if (code < table->id[low].code) |
632 | return -EAGAIN; /* Incorrect reading */ |
633 | |
634 | while (low <= high) { |
635 | if (code <= table->id[mid].code && |
636 | code > table->id[mid - 1].code) |
637 | break; |
638 | else if (code > table->id[mid].code) |
639 | low = mid + 1; |
640 | else |
641 | high = mid - 1; |
642 | |
643 | mid = (low + high) / 2; |
644 | } |
645 | break; |
646 | default: |
647 | pr_err("%s: unknown table mode: %d\n" , __func__, table->mode); |
648 | return -EINVAL; |
649 | } |
650 | |
651 | /* |
652 | * The 5C granularity provided by the table is too much. Let's |
653 | * assume that the relationship between sensor readings and |
654 | * temperature between 2 table entries is linear and interpolate |
655 | * to produce less granular result. |
656 | */ |
657 | num = table->id[mid].temp - table->id[mid - 1].temp; |
658 | num *= abs(table->id[mid - 1].code - code); |
659 | denom = abs(table->id[mid - 1].code - table->id[mid].code); |
660 | *temp = table->id[mid - 1].temp + (num / denom); |
661 | |
662 | return 0; |
663 | } |
664 | |
665 | /** |
666 | * rk_tsadcv2_initialize - initialize TASDC Controller. |
667 | * @grf: the general register file will be used to do static set by software |
668 | * @regs: the base address of tsadc controller |
669 | * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH) |
670 | * |
671 | * (1) Set TSADC_V2_AUTO_PERIOD: |
672 | * Configure the interleave between every two accessing of |
673 | * TSADC in normal operation. |
674 | * |
675 | * (2) Set TSADCV2_AUTO_PERIOD_HT: |
676 | * Configure the interleave between every two accessing of |
677 | * TSADC after the temperature is higher than COM_SHUT or COM_INT. |
678 | * |
679 | * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE: |
680 | * If the temperature is higher than COMP_INT or COMP_SHUT for |
681 | * "debounce" times, TSADC controller will generate interrupt or TSHUT. |
682 | */ |
683 | static void rk_tsadcv2_initialize(struct regmap *grf, void __iomem *regs, |
684 | enum tshut_polarity tshut_polarity) |
685 | { |
686 | if (tshut_polarity == TSHUT_HIGH_ACTIVE) |
687 | writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH, |
688 | regs + TSADCV2_AUTO_CON); |
689 | else |
690 | writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH, |
691 | regs + TSADCV2_AUTO_CON); |
692 | |
693 | writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, regs + TSADCV2_AUTO_PERIOD); |
694 | writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT, |
695 | regs + TSADCV2_HIGHT_INT_DEBOUNCE); |
696 | writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME, |
697 | regs + TSADCV2_AUTO_PERIOD_HT); |
698 | writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT, |
699 | regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE); |
700 | } |
701 | |
702 | /** |
703 | * rk_tsadcv3_initialize - initialize TASDC Controller. |
704 | * @grf: the general register file will be used to do static set by software |
705 | * @regs: the base address of tsadc controller |
706 | * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH) |
707 | * |
708 | * (1) The tsadc control power sequence. |
709 | * |
710 | * (2) Set TSADC_V2_AUTO_PERIOD: |
711 | * Configure the interleave between every two accessing of |
712 | * TSADC in normal operation. |
713 | * |
714 | * (2) Set TSADCV2_AUTO_PERIOD_HT: |
715 | * Configure the interleave between every two accessing of |
716 | * TSADC after the temperature is higher than COM_SHUT or COM_INT. |
717 | * |
718 | * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE: |
719 | * If the temperature is higher than COMP_INT or COMP_SHUT for |
720 | * "debounce" times, TSADC controller will generate interrupt or TSHUT. |
721 | */ |
722 | static void rk_tsadcv3_initialize(struct regmap *grf, void __iomem *regs, |
723 | enum tshut_polarity tshut_polarity) |
724 | { |
725 | /* The tsadc control power sequence */ |
726 | if (IS_ERR(ptr: grf)) { |
727 | /* Set interleave value to workround ic time sync issue */ |
728 | writel_relaxed(TSADCV2_USER_INTER_PD_SOC, regs + |
729 | TSADCV2_USER_CON); |
730 | |
731 | writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, |
732 | regs + TSADCV2_AUTO_PERIOD); |
733 | writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT, |
734 | regs + TSADCV2_HIGHT_INT_DEBOUNCE); |
735 | writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME, |
736 | regs + TSADCV2_AUTO_PERIOD_HT); |
737 | writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT, |
738 | regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE); |
739 | |
740 | } else { |
741 | /* Enable the voltage common mode feature */ |
742 | regmap_write(map: grf, GRF_TSADC_TESTBIT_L, GRF_TSADC_VCM_EN_L); |
743 | regmap_write(map: grf, GRF_TSADC_TESTBIT_H, GRF_TSADC_VCM_EN_H); |
744 | |
745 | usleep_range(min: 15, max: 100); /* The spec note says at least 15 us */ |
746 | regmap_write(map: grf, GRF_SARADC_TESTBIT, GRF_SARADC_TESTBIT_ON); |
747 | regmap_write(map: grf, GRF_TSADC_TESTBIT_H, GRF_TSADC_TESTBIT_H_ON); |
748 | usleep_range(min: 90, max: 200); /* The spec note says at least 90 us */ |
749 | |
750 | writel_relaxed(TSADCV3_AUTO_PERIOD_TIME, |
751 | regs + TSADCV2_AUTO_PERIOD); |
752 | writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT, |
753 | regs + TSADCV2_HIGHT_INT_DEBOUNCE); |
754 | writel_relaxed(TSADCV3_AUTO_PERIOD_HT_TIME, |
755 | regs + TSADCV2_AUTO_PERIOD_HT); |
756 | writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT, |
757 | regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE); |
758 | } |
759 | |
760 | if (tshut_polarity == TSHUT_HIGH_ACTIVE) |
761 | writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH, |
762 | regs + TSADCV2_AUTO_CON); |
763 | else |
764 | writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH, |
765 | regs + TSADCV2_AUTO_CON); |
766 | } |
767 | |
768 | static void rk_tsadcv4_initialize(struct regmap *grf, void __iomem *regs, |
769 | enum tshut_polarity tshut_polarity) |
770 | { |
771 | rk_tsadcv2_initialize(grf, regs, tshut_polarity); |
772 | regmap_write(map: grf, PX30_GRF_SOC_CON2, GRF_CON_TSADC_CH_INV); |
773 | } |
774 | |
775 | static void rk_tsadcv7_initialize(struct regmap *grf, void __iomem *regs, |
776 | enum tshut_polarity tshut_polarity) |
777 | { |
778 | writel_relaxed(TSADCV5_USER_INTER_PD_SOC, regs + TSADCV2_USER_CON); |
779 | writel_relaxed(TSADCV5_AUTO_PERIOD_TIME, regs + TSADCV2_AUTO_PERIOD); |
780 | writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT, |
781 | regs + TSADCV2_HIGHT_INT_DEBOUNCE); |
782 | writel_relaxed(TSADCV5_AUTO_PERIOD_HT_TIME, |
783 | regs + TSADCV2_AUTO_PERIOD_HT); |
784 | writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT, |
785 | regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE); |
786 | |
787 | if (tshut_polarity == TSHUT_HIGH_ACTIVE) |
788 | writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH, |
789 | regs + TSADCV2_AUTO_CON); |
790 | else |
791 | writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH, |
792 | regs + TSADCV2_AUTO_CON); |
793 | |
794 | /* |
795 | * The general register file will is optional |
796 | * and might not be available. |
797 | */ |
798 | if (!IS_ERR(ptr: grf)) { |
799 | regmap_write(map: grf, RK3568_GRF_TSADC_CON, RK3568_GRF_TSADC_TSEN); |
800 | /* |
801 | * RK3568 TRM, section 18.5. requires a delay no less |
802 | * than 10us between the rising edge of tsadc_tsen_en |
803 | * and the rising edge of tsadc_ana_reg_0/1/2. |
804 | */ |
805 | udelay(15); |
806 | regmap_write(map: grf, RK3568_GRF_TSADC_CON, RK3568_GRF_TSADC_ANA_REG0); |
807 | regmap_write(map: grf, RK3568_GRF_TSADC_CON, RK3568_GRF_TSADC_ANA_REG1); |
808 | regmap_write(map: grf, RK3568_GRF_TSADC_CON, RK3568_GRF_TSADC_ANA_REG2); |
809 | |
810 | /* |
811 | * RK3568 TRM, section 18.5. requires a delay no less |
812 | * than 90us after the rising edge of tsadc_ana_reg_0/1/2. |
813 | */ |
814 | usleep_range(min: 100, max: 200); |
815 | } |
816 | } |
817 | |
818 | static void rk_tsadcv8_initialize(struct regmap *grf, void __iomem *regs, |
819 | enum tshut_polarity tshut_polarity) |
820 | { |
821 | writel_relaxed(TSADCV6_AUTO_PERIOD_TIME, regs + TSADCV3_AUTO_PERIOD); |
822 | writel_relaxed(TSADCV6_AUTO_PERIOD_HT_TIME, |
823 | regs + TSADCV3_AUTO_PERIOD_HT); |
824 | writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT, |
825 | regs + TSADCV3_HIGHT_INT_DEBOUNCE); |
826 | writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT, |
827 | regs + TSADCV3_HIGHT_TSHUT_DEBOUNCE); |
828 | if (tshut_polarity == TSHUT_HIGH_ACTIVE) |
829 | writel_relaxed(TSADCV2_AUTO_TSHUT_POLARITY_HIGH | |
830 | TSADCV2_AUTO_TSHUT_POLARITY_MASK, |
831 | regs + TSADCV2_AUTO_CON); |
832 | else |
833 | writel_relaxed(TSADCV2_AUTO_TSHUT_POLARITY_MASK, |
834 | regs + TSADCV2_AUTO_CON); |
835 | } |
836 | |
837 | static void rk_tsadcv2_irq_ack(void __iomem *regs) |
838 | { |
839 | u32 val; |
840 | |
841 | val = readl_relaxed(regs + TSADCV2_INT_PD); |
842 | writel_relaxed(val & TSADCV2_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD); |
843 | } |
844 | |
845 | static void rk_tsadcv3_irq_ack(void __iomem *regs) |
846 | { |
847 | u32 val; |
848 | |
849 | val = readl_relaxed(regs + TSADCV2_INT_PD); |
850 | writel_relaxed(val & TSADCV3_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD); |
851 | } |
852 | |
853 | static void rk_tsadcv4_irq_ack(void __iomem *regs) |
854 | { |
855 | u32 val; |
856 | |
857 | val = readl_relaxed(regs + TSADCV3_INT_PD); |
858 | writel_relaxed(val & TSADCV4_INT_PD_CLEAR_MASK, regs + TSADCV3_INT_PD); |
859 | val = readl_relaxed(regs + TSADCV3_HSHUT_PD); |
860 | writel_relaxed(val & TSADCV3_INT_PD_CLEAR_MASK, |
861 | regs + TSADCV3_HSHUT_PD); |
862 | } |
863 | |
864 | static void rk_tsadcv2_control(void __iomem *regs, bool enable) |
865 | { |
866 | u32 val; |
867 | |
868 | val = readl_relaxed(regs + TSADCV2_AUTO_CON); |
869 | if (enable) |
870 | val |= TSADCV2_AUTO_EN; |
871 | else |
872 | val &= ~TSADCV2_AUTO_EN; |
873 | |
874 | writel_relaxed(val, regs + TSADCV2_AUTO_CON); |
875 | } |
876 | |
877 | /** |
878 | * rk_tsadcv3_control - the tsadc controller is enabled or disabled. |
879 | * @regs: the base address of tsadc controller |
880 | * @enable: boolean flag to enable the controller |
881 | * |
882 | * NOTE: TSADC controller works at auto mode, and some SoCs need set the |
883 | * tsadc_q_sel bit on TSADCV2_AUTO_CON[1]. The (1024 - tsadc_q) as output |
884 | * adc value if setting this bit to enable. |
885 | */ |
886 | static void rk_tsadcv3_control(void __iomem *regs, bool enable) |
887 | { |
888 | u32 val; |
889 | |
890 | val = readl_relaxed(regs + TSADCV2_AUTO_CON); |
891 | if (enable) |
892 | val |= TSADCV2_AUTO_EN | TSADCV3_AUTO_Q_SEL_EN; |
893 | else |
894 | val &= ~TSADCV2_AUTO_EN; |
895 | |
896 | writel_relaxed(val, regs + TSADCV2_AUTO_CON); |
897 | } |
898 | |
899 | static void rk_tsadcv4_control(void __iomem *regs, bool enable) |
900 | { |
901 | u32 val; |
902 | |
903 | if (enable) |
904 | val = TSADCV2_AUTO_EN | TSADCV2_AUTO_EN_MASK; |
905 | else |
906 | val = TSADCV2_AUTO_EN_MASK; |
907 | |
908 | writel_relaxed(val, regs + TSADCV2_AUTO_CON); |
909 | } |
910 | |
911 | static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table, |
912 | int chn, void __iomem *regs, int *temp) |
913 | { |
914 | u32 val; |
915 | |
916 | val = readl_relaxed(regs + TSADCV2_DATA(chn)); |
917 | |
918 | return rk_tsadcv2_code_to_temp(table, code: val, temp); |
919 | } |
920 | |
921 | static int rk_tsadcv4_get_temp(const struct chip_tsadc_table *table, |
922 | int chn, void __iomem *regs, int *temp) |
923 | { |
924 | u32 val; |
925 | |
926 | val = readl_relaxed(regs + TSADCV3_DATA(chn)); |
927 | |
928 | return rk_tsadcv2_code_to_temp(table, code: val, temp); |
929 | } |
930 | |
931 | static int rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table, |
932 | int chn, void __iomem *regs, int temp) |
933 | { |
934 | u32 alarm_value; |
935 | u32 int_en, int_clr; |
936 | |
937 | /* |
938 | * In some cases, some sensors didn't need the trip points, the |
939 | * set_trips will pass {-INT_MAX, INT_MAX} to trigger tsadc alarm |
940 | * in the end, ignore this case and disable the high temperature |
941 | * interrupt. |
942 | */ |
943 | if (temp == INT_MAX) { |
944 | int_clr = readl_relaxed(regs + TSADCV2_INT_EN); |
945 | int_clr &= ~TSADCV2_INT_SRC_EN(chn); |
946 | writel_relaxed(int_clr, regs + TSADCV2_INT_EN); |
947 | return 0; |
948 | } |
949 | |
950 | /* Make sure the value is valid */ |
951 | alarm_value = rk_tsadcv2_temp_to_code(table, temp); |
952 | if (alarm_value == table->data_mask) |
953 | return -ERANGE; |
954 | |
955 | writel_relaxed(alarm_value & table->data_mask, |
956 | regs + TSADCV2_COMP_INT(chn)); |
957 | |
958 | int_en = readl_relaxed(regs + TSADCV2_INT_EN); |
959 | int_en |= TSADCV2_INT_SRC_EN(chn); |
960 | writel_relaxed(int_en, regs + TSADCV2_INT_EN); |
961 | |
962 | return 0; |
963 | } |
964 | |
965 | static int rk_tsadcv3_alarm_temp(const struct chip_tsadc_table *table, |
966 | int chn, void __iomem *regs, int temp) |
967 | { |
968 | u32 alarm_value; |
969 | |
970 | /* |
971 | * In some cases, some sensors didn't need the trip points, the |
972 | * set_trips will pass {-INT_MAX, INT_MAX} to trigger tsadc alarm |
973 | * in the end, ignore this case and disable the high temperature |
974 | * interrupt. |
975 | */ |
976 | if (temp == INT_MAX) { |
977 | writel_relaxed(TSADCV2_INT_SRC_EN_MASK(chn), |
978 | regs + TSADCV3_HT_INT_EN); |
979 | return 0; |
980 | } |
981 | /* Make sure the value is valid */ |
982 | alarm_value = rk_tsadcv2_temp_to_code(table, temp); |
983 | if (alarm_value == table->data_mask) |
984 | return -ERANGE; |
985 | writel_relaxed(alarm_value & table->data_mask, |
986 | regs + TSADCV3_COMP_INT(chn)); |
987 | writel_relaxed(TSADCV2_INT_SRC_EN(chn) | TSADCV2_INT_SRC_EN_MASK(chn), |
988 | regs + TSADCV3_HT_INT_EN); |
989 | return 0; |
990 | } |
991 | |
992 | static int rk_tsadcv2_tshut_temp(const struct chip_tsadc_table *table, |
993 | int chn, void __iomem *regs, int temp) |
994 | { |
995 | u32 tshut_value, val; |
996 | |
997 | /* Make sure the value is valid */ |
998 | tshut_value = rk_tsadcv2_temp_to_code(table, temp); |
999 | if (tshut_value == table->data_mask) |
1000 | return -ERANGE; |
1001 | |
1002 | writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn)); |
1003 | |
1004 | /* TSHUT will be valid */ |
1005 | val = readl_relaxed(regs + TSADCV2_AUTO_CON); |
1006 | writel_relaxed(val | TSADCV2_AUTO_SRC_EN(chn), regs + TSADCV2_AUTO_CON); |
1007 | |
1008 | return 0; |
1009 | } |
1010 | |
1011 | static int rk_tsadcv3_tshut_temp(const struct chip_tsadc_table *table, |
1012 | int chn, void __iomem *regs, int temp) |
1013 | { |
1014 | u32 tshut_value; |
1015 | |
1016 | /* Make sure the value is valid */ |
1017 | tshut_value = rk_tsadcv2_temp_to_code(table, temp); |
1018 | if (tshut_value == table->data_mask) |
1019 | return -ERANGE; |
1020 | |
1021 | writel_relaxed(tshut_value, regs + TSADCV3_COMP_SHUT(chn)); |
1022 | |
1023 | /* TSHUT will be valid */ |
1024 | writel_relaxed(TSADCV3_AUTO_SRC_EN(chn) | TSADCV3_AUTO_SRC_EN_MASK(chn), |
1025 | regs + TSADCV3_AUTO_SRC_CON); |
1026 | |
1027 | return 0; |
1028 | } |
1029 | |
1030 | static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs, |
1031 | enum tshut_mode mode) |
1032 | { |
1033 | u32 val; |
1034 | |
1035 | val = readl_relaxed(regs + TSADCV2_INT_EN); |
1036 | if (mode == TSHUT_MODE_GPIO) { |
1037 | val &= ~TSADCV2_SHUT_2CRU_SRC_EN(chn); |
1038 | val |= TSADCV2_SHUT_2GPIO_SRC_EN(chn); |
1039 | } else { |
1040 | val &= ~TSADCV2_SHUT_2GPIO_SRC_EN(chn); |
1041 | val |= TSADCV2_SHUT_2CRU_SRC_EN(chn); |
1042 | } |
1043 | |
1044 | writel_relaxed(val, regs + TSADCV2_INT_EN); |
1045 | } |
1046 | |
1047 | static void rk_tsadcv3_tshut_mode(int chn, void __iomem *regs, |
1048 | enum tshut_mode mode) |
1049 | { |
1050 | u32 val_gpio, val_cru; |
1051 | |
1052 | if (mode == TSHUT_MODE_GPIO) { |
1053 | val_gpio = TSADCV2_INT_SRC_EN(chn) | TSADCV2_INT_SRC_EN_MASK(chn); |
1054 | val_cru = TSADCV2_INT_SRC_EN_MASK(chn); |
1055 | } else { |
1056 | val_cru = TSADCV2_INT_SRC_EN(chn) | TSADCV2_INT_SRC_EN_MASK(chn); |
1057 | val_gpio = TSADCV2_INT_SRC_EN_MASK(chn); |
1058 | } |
1059 | writel_relaxed(val_gpio, regs + TSADCV3_HSHUT_GPIO_INT_EN); |
1060 | writel_relaxed(val_cru, regs + TSADCV3_HSHUT_CRU_INT_EN); |
1061 | } |
1062 | |
1063 | static const struct rockchip_tsadc_chip px30_tsadc_data = { |
1064 | /* cpu, gpu */ |
1065 | .chn_offset = 0, |
1066 | .chn_num = 2, /* 2 channels for tsadc */ |
1067 | |
1068 | .tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */ |
1069 | .tshut_temp = 95000, |
1070 | |
1071 | .initialize = rk_tsadcv4_initialize, |
1072 | .irq_ack = rk_tsadcv3_irq_ack, |
1073 | .control = rk_tsadcv3_control, |
1074 | .get_temp = rk_tsadcv2_get_temp, |
1075 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
1076 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
1077 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
1078 | |
1079 | .table = { |
1080 | .id = rk3328_code_table, |
1081 | .length = ARRAY_SIZE(rk3328_code_table), |
1082 | .data_mask = TSADCV2_DATA_MASK, |
1083 | .mode = ADC_INCREMENT, |
1084 | }, |
1085 | }; |
1086 | |
1087 | static const struct rockchip_tsadc_chip rv1108_tsadc_data = { |
1088 | /* cpu */ |
1089 | .chn_offset = 0, |
1090 | .chn_num = 1, /* one channel for tsadc */ |
1091 | |
1092 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
1093 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
1094 | .tshut_temp = 95000, |
1095 | |
1096 | .initialize = rk_tsadcv2_initialize, |
1097 | .irq_ack = rk_tsadcv3_irq_ack, |
1098 | .control = rk_tsadcv3_control, |
1099 | .get_temp = rk_tsadcv2_get_temp, |
1100 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
1101 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
1102 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
1103 | |
1104 | .table = { |
1105 | .id = rv1108_table, |
1106 | .length = ARRAY_SIZE(rv1108_table), |
1107 | .data_mask = TSADCV2_DATA_MASK, |
1108 | .mode = ADC_INCREMENT, |
1109 | }, |
1110 | }; |
1111 | |
1112 | static const struct rockchip_tsadc_chip rk3228_tsadc_data = { |
1113 | /* cpu */ |
1114 | .chn_offset = 0, |
1115 | .chn_num = 1, /* one channel for tsadc */ |
1116 | |
1117 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
1118 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
1119 | .tshut_temp = 95000, |
1120 | |
1121 | .initialize = rk_tsadcv2_initialize, |
1122 | .irq_ack = rk_tsadcv3_irq_ack, |
1123 | .control = rk_tsadcv3_control, |
1124 | .get_temp = rk_tsadcv2_get_temp, |
1125 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
1126 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
1127 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
1128 | |
1129 | .table = { |
1130 | .id = rk3228_code_table, |
1131 | .length = ARRAY_SIZE(rk3228_code_table), |
1132 | .data_mask = TSADCV3_DATA_MASK, |
1133 | .mode = ADC_INCREMENT, |
1134 | }, |
1135 | }; |
1136 | |
1137 | static const struct rockchip_tsadc_chip rk3288_tsadc_data = { |
1138 | /* cpu, gpu */ |
1139 | .chn_offset = 1, |
1140 | .chn_num = 2, /* two channels for tsadc */ |
1141 | |
1142 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
1143 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
1144 | .tshut_temp = 95000, |
1145 | |
1146 | .initialize = rk_tsadcv2_initialize, |
1147 | .irq_ack = rk_tsadcv2_irq_ack, |
1148 | .control = rk_tsadcv2_control, |
1149 | .get_temp = rk_tsadcv2_get_temp, |
1150 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
1151 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
1152 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
1153 | |
1154 | .table = { |
1155 | .id = rk3288_code_table, |
1156 | .length = ARRAY_SIZE(rk3288_code_table), |
1157 | .data_mask = TSADCV2_DATA_MASK, |
1158 | .mode = ADC_DECREMENT, |
1159 | }, |
1160 | }; |
1161 | |
1162 | static const struct rockchip_tsadc_chip rk3328_tsadc_data = { |
1163 | /* cpu */ |
1164 | .chn_offset = 0, |
1165 | .chn_num = 1, /* one channels for tsadc */ |
1166 | |
1167 | .tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */ |
1168 | .tshut_temp = 95000, |
1169 | |
1170 | .initialize = rk_tsadcv2_initialize, |
1171 | .irq_ack = rk_tsadcv3_irq_ack, |
1172 | .control = rk_tsadcv3_control, |
1173 | .get_temp = rk_tsadcv2_get_temp, |
1174 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
1175 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
1176 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
1177 | |
1178 | .table = { |
1179 | .id = rk3328_code_table, |
1180 | .length = ARRAY_SIZE(rk3328_code_table), |
1181 | .data_mask = TSADCV2_DATA_MASK, |
1182 | .mode = ADC_INCREMENT, |
1183 | }, |
1184 | }; |
1185 | |
1186 | static const struct rockchip_tsadc_chip rk3366_tsadc_data = { |
1187 | /* cpu, gpu */ |
1188 | .chn_offset = 0, |
1189 | .chn_num = 2, /* two channels for tsadc */ |
1190 | |
1191 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
1192 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
1193 | .tshut_temp = 95000, |
1194 | |
1195 | .initialize = rk_tsadcv3_initialize, |
1196 | .irq_ack = rk_tsadcv3_irq_ack, |
1197 | .control = rk_tsadcv3_control, |
1198 | .get_temp = rk_tsadcv2_get_temp, |
1199 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
1200 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
1201 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
1202 | |
1203 | .table = { |
1204 | .id = rk3228_code_table, |
1205 | .length = ARRAY_SIZE(rk3228_code_table), |
1206 | .data_mask = TSADCV3_DATA_MASK, |
1207 | .mode = ADC_INCREMENT, |
1208 | }, |
1209 | }; |
1210 | |
1211 | static const struct rockchip_tsadc_chip rk3368_tsadc_data = { |
1212 | /* cpu, gpu */ |
1213 | .chn_offset = 0, |
1214 | .chn_num = 2, /* two channels for tsadc */ |
1215 | |
1216 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
1217 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
1218 | .tshut_temp = 95000, |
1219 | |
1220 | .initialize = rk_tsadcv2_initialize, |
1221 | .irq_ack = rk_tsadcv2_irq_ack, |
1222 | .control = rk_tsadcv2_control, |
1223 | .get_temp = rk_tsadcv2_get_temp, |
1224 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
1225 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
1226 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
1227 | |
1228 | .table = { |
1229 | .id = rk3368_code_table, |
1230 | .length = ARRAY_SIZE(rk3368_code_table), |
1231 | .data_mask = TSADCV3_DATA_MASK, |
1232 | .mode = ADC_INCREMENT, |
1233 | }, |
1234 | }; |
1235 | |
1236 | static const struct rockchip_tsadc_chip rk3399_tsadc_data = { |
1237 | /* cpu, gpu */ |
1238 | .chn_offset = 0, |
1239 | .chn_num = 2, /* two channels for tsadc */ |
1240 | |
1241 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
1242 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
1243 | .tshut_temp = 95000, |
1244 | |
1245 | .initialize = rk_tsadcv3_initialize, |
1246 | .irq_ack = rk_tsadcv3_irq_ack, |
1247 | .control = rk_tsadcv3_control, |
1248 | .get_temp = rk_tsadcv2_get_temp, |
1249 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
1250 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
1251 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
1252 | |
1253 | .table = { |
1254 | .id = rk3399_code_table, |
1255 | .length = ARRAY_SIZE(rk3399_code_table), |
1256 | .data_mask = TSADCV3_DATA_MASK, |
1257 | .mode = ADC_INCREMENT, |
1258 | }, |
1259 | }; |
1260 | |
1261 | static const struct rockchip_tsadc_chip rk3568_tsadc_data = { |
1262 | /* cpu, gpu */ |
1263 | .chn_offset = 0, |
1264 | .chn_num = 2, /* two channels for tsadc */ |
1265 | |
1266 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
1267 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
1268 | .tshut_temp = 95000, |
1269 | |
1270 | .initialize = rk_tsadcv7_initialize, |
1271 | .irq_ack = rk_tsadcv3_irq_ack, |
1272 | .control = rk_tsadcv3_control, |
1273 | .get_temp = rk_tsadcv2_get_temp, |
1274 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
1275 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
1276 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
1277 | |
1278 | .table = { |
1279 | .id = rk3568_code_table, |
1280 | .length = ARRAY_SIZE(rk3568_code_table), |
1281 | .data_mask = TSADCV2_DATA_MASK, |
1282 | .mode = ADC_INCREMENT, |
1283 | }, |
1284 | }; |
1285 | |
1286 | static const struct rockchip_tsadc_chip rk3588_tsadc_data = { |
1287 | /* top, big_core0, big_core1, little_core, center, gpu, npu */ |
1288 | .chn_offset = 0, |
1289 | .chn_num = 7, /* seven channels for tsadc */ |
1290 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
1291 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
1292 | .tshut_temp = 95000, |
1293 | .initialize = rk_tsadcv8_initialize, |
1294 | .irq_ack = rk_tsadcv4_irq_ack, |
1295 | .control = rk_tsadcv4_control, |
1296 | .get_temp = rk_tsadcv4_get_temp, |
1297 | .set_alarm_temp = rk_tsadcv3_alarm_temp, |
1298 | .set_tshut_temp = rk_tsadcv3_tshut_temp, |
1299 | .set_tshut_mode = rk_tsadcv3_tshut_mode, |
1300 | .table = { |
1301 | .id = rk3588_code_table, |
1302 | .length = ARRAY_SIZE(rk3588_code_table), |
1303 | .data_mask = TSADCV4_DATA_MASK, |
1304 | .mode = ADC_INCREMENT, |
1305 | }, |
1306 | }; |
1307 | |
1308 | static const struct of_device_id of_rockchip_thermal_match[] = { |
1309 | { .compatible = "rockchip,px30-tsadc" , |
1310 | .data = (void *)&px30_tsadc_data, |
1311 | }, |
1312 | { |
1313 | .compatible = "rockchip,rv1108-tsadc" , |
1314 | .data = (void *)&rv1108_tsadc_data, |
1315 | }, |
1316 | { |
1317 | .compatible = "rockchip,rk3228-tsadc" , |
1318 | .data = (void *)&rk3228_tsadc_data, |
1319 | }, |
1320 | { |
1321 | .compatible = "rockchip,rk3288-tsadc" , |
1322 | .data = (void *)&rk3288_tsadc_data, |
1323 | }, |
1324 | { |
1325 | .compatible = "rockchip,rk3328-tsadc" , |
1326 | .data = (void *)&rk3328_tsadc_data, |
1327 | }, |
1328 | { |
1329 | .compatible = "rockchip,rk3366-tsadc" , |
1330 | .data = (void *)&rk3366_tsadc_data, |
1331 | }, |
1332 | { |
1333 | .compatible = "rockchip,rk3368-tsadc" , |
1334 | .data = (void *)&rk3368_tsadc_data, |
1335 | }, |
1336 | { |
1337 | .compatible = "rockchip,rk3399-tsadc" , |
1338 | .data = (void *)&rk3399_tsadc_data, |
1339 | }, |
1340 | { |
1341 | .compatible = "rockchip,rk3568-tsadc" , |
1342 | .data = (void *)&rk3568_tsadc_data, |
1343 | }, |
1344 | { |
1345 | .compatible = "rockchip,rk3588-tsadc" , |
1346 | .data = (void *)&rk3588_tsadc_data, |
1347 | }, |
1348 | { /* end */ }, |
1349 | }; |
1350 | MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match); |
1351 | |
1352 | static void |
1353 | rockchip_thermal_toggle_sensor(struct rockchip_thermal_sensor *sensor, bool on) |
1354 | { |
1355 | struct thermal_zone_device *tzd = sensor->tzd; |
1356 | |
1357 | if (on) |
1358 | thermal_zone_device_enable(tz: tzd); |
1359 | else |
1360 | thermal_zone_device_disable(tz: tzd); |
1361 | } |
1362 | |
1363 | static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev) |
1364 | { |
1365 | struct rockchip_thermal_data *thermal = dev; |
1366 | int i; |
1367 | |
1368 | dev_dbg(&thermal->pdev->dev, "thermal alarm\n" ); |
1369 | |
1370 | thermal->chip->irq_ack(thermal->regs); |
1371 | |
1372 | for (i = 0; i < thermal->chip->chn_num; i++) |
1373 | thermal_zone_device_update(thermal->sensors[i].tzd, |
1374 | THERMAL_EVENT_UNSPECIFIED); |
1375 | |
1376 | return IRQ_HANDLED; |
1377 | } |
1378 | |
1379 | static int rockchip_thermal_set_trips(struct thermal_zone_device *tz, int low, int high) |
1380 | { |
1381 | struct rockchip_thermal_sensor *sensor = thermal_zone_device_priv(tzd: tz); |
1382 | struct rockchip_thermal_data *thermal = sensor->thermal; |
1383 | const struct rockchip_tsadc_chip *tsadc = thermal->chip; |
1384 | |
1385 | dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %d, high %d\n" , |
1386 | __func__, sensor->id, low, high); |
1387 | |
1388 | return tsadc->set_alarm_temp(&tsadc->table, |
1389 | sensor->id, thermal->regs, high); |
1390 | } |
1391 | |
1392 | static int rockchip_thermal_get_temp(struct thermal_zone_device *tz, int *out_temp) |
1393 | { |
1394 | struct rockchip_thermal_sensor *sensor = thermal_zone_device_priv(tzd: tz); |
1395 | struct rockchip_thermal_data *thermal = sensor->thermal; |
1396 | const struct rockchip_tsadc_chip *tsadc = sensor->thermal->chip; |
1397 | int retval; |
1398 | |
1399 | retval = tsadc->get_temp(&tsadc->table, |
1400 | sensor->id, thermal->regs, out_temp); |
1401 | return retval; |
1402 | } |
1403 | |
1404 | static const struct thermal_zone_device_ops rockchip_of_thermal_ops = { |
1405 | .get_temp = rockchip_thermal_get_temp, |
1406 | .set_trips = rockchip_thermal_set_trips, |
1407 | }; |
1408 | |
1409 | static int rockchip_configure_from_dt(struct device *dev, |
1410 | struct device_node *np, |
1411 | struct rockchip_thermal_data *thermal) |
1412 | { |
1413 | u32 shut_temp, tshut_mode, tshut_polarity; |
1414 | |
1415 | if (of_property_read_u32(np, propname: "rockchip,hw-tshut-temp" , out_value: &shut_temp)) { |
1416 | dev_warn(dev, |
1417 | "Missing tshut temp property, using default %d\n" , |
1418 | thermal->chip->tshut_temp); |
1419 | thermal->tshut_temp = thermal->chip->tshut_temp; |
1420 | } else { |
1421 | if (shut_temp > INT_MAX) { |
1422 | dev_err(dev, "Invalid tshut temperature specified: %d\n" , |
1423 | shut_temp); |
1424 | return -ERANGE; |
1425 | } |
1426 | thermal->tshut_temp = shut_temp; |
1427 | } |
1428 | |
1429 | if (of_property_read_u32(np, propname: "rockchip,hw-tshut-mode" , out_value: &tshut_mode)) { |
1430 | dev_warn(dev, |
1431 | "Missing tshut mode property, using default (%s)\n" , |
1432 | thermal->chip->tshut_mode == TSHUT_MODE_GPIO ? |
1433 | "gpio" : "cru" ); |
1434 | thermal->tshut_mode = thermal->chip->tshut_mode; |
1435 | } else { |
1436 | thermal->tshut_mode = tshut_mode; |
1437 | } |
1438 | |
1439 | if (thermal->tshut_mode > 1) { |
1440 | dev_err(dev, "Invalid tshut mode specified: %d\n" , |
1441 | thermal->tshut_mode); |
1442 | return -EINVAL; |
1443 | } |
1444 | |
1445 | if (of_property_read_u32(np, propname: "rockchip,hw-tshut-polarity" , |
1446 | out_value: &tshut_polarity)) { |
1447 | dev_warn(dev, |
1448 | "Missing tshut-polarity property, using default (%s)\n" , |
1449 | thermal->chip->tshut_polarity == TSHUT_LOW_ACTIVE ? |
1450 | "low" : "high" ); |
1451 | thermal->tshut_polarity = thermal->chip->tshut_polarity; |
1452 | } else { |
1453 | thermal->tshut_polarity = tshut_polarity; |
1454 | } |
1455 | |
1456 | if (thermal->tshut_polarity > 1) { |
1457 | dev_err(dev, "Invalid tshut-polarity specified: %d\n" , |
1458 | thermal->tshut_polarity); |
1459 | return -EINVAL; |
1460 | } |
1461 | |
1462 | /* The tsadc wont to handle the error in here since some SoCs didn't |
1463 | * need this property. |
1464 | */ |
1465 | thermal->grf = syscon_regmap_lookup_by_phandle(np, property: "rockchip,grf" ); |
1466 | if (IS_ERR(ptr: thermal->grf)) |
1467 | dev_warn(dev, "Missing rockchip,grf property\n" ); |
1468 | |
1469 | return 0; |
1470 | } |
1471 | |
1472 | static int |
1473 | rockchip_thermal_register_sensor(struct platform_device *pdev, |
1474 | struct rockchip_thermal_data *thermal, |
1475 | struct rockchip_thermal_sensor *sensor, |
1476 | int id) |
1477 | { |
1478 | const struct rockchip_tsadc_chip *tsadc = thermal->chip; |
1479 | int error; |
1480 | |
1481 | tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode); |
1482 | |
1483 | error = tsadc->set_tshut_temp(&tsadc->table, id, thermal->regs, |
1484 | thermal->tshut_temp); |
1485 | if (error) |
1486 | dev_err(&pdev->dev, "%s: invalid tshut=%d, error=%d\n" , |
1487 | __func__, thermal->tshut_temp, error); |
1488 | |
1489 | sensor->thermal = thermal; |
1490 | sensor->id = id; |
1491 | sensor->tzd = devm_thermal_of_zone_register(dev: &pdev->dev, id, data: sensor, |
1492 | ops: &rockchip_of_thermal_ops); |
1493 | if (IS_ERR(ptr: sensor->tzd)) { |
1494 | error = PTR_ERR(ptr: sensor->tzd); |
1495 | dev_err(&pdev->dev, "failed to register sensor %d: %d\n" , |
1496 | id, error); |
1497 | return error; |
1498 | } |
1499 | |
1500 | return 0; |
1501 | } |
1502 | |
1503 | /** |
1504 | * rockchip_thermal_reset_controller - Reset TSADC Controller, reset all tsadc registers. |
1505 | * @reset: the reset controller of tsadc |
1506 | */ |
1507 | static void rockchip_thermal_reset_controller(struct reset_control *reset) |
1508 | { |
1509 | reset_control_assert(rstc: reset); |
1510 | usleep_range(min: 10, max: 20); |
1511 | reset_control_deassert(rstc: reset); |
1512 | } |
1513 | |
1514 | static int rockchip_thermal_probe(struct platform_device *pdev) |
1515 | { |
1516 | struct device_node *np = pdev->dev.of_node; |
1517 | struct rockchip_thermal_data *thermal; |
1518 | int irq; |
1519 | int i; |
1520 | int error; |
1521 | |
1522 | irq = platform_get_irq(pdev, 0); |
1523 | if (irq < 0) |
1524 | return -EINVAL; |
1525 | |
1526 | thermal = devm_kzalloc(dev: &pdev->dev, size: sizeof(struct rockchip_thermal_data), |
1527 | GFP_KERNEL); |
1528 | if (!thermal) |
1529 | return -ENOMEM; |
1530 | |
1531 | thermal->pdev = pdev; |
1532 | |
1533 | thermal->chip = device_get_match_data(dev: &pdev->dev); |
1534 | if (!thermal->chip) |
1535 | return -EINVAL; |
1536 | |
1537 | thermal->sensors = devm_kcalloc(dev: &pdev->dev, n: thermal->chip->chn_num, |
1538 | size: sizeof(*thermal->sensors), GFP_KERNEL); |
1539 | if (!thermal->sensors) |
1540 | return -ENOMEM; |
1541 | |
1542 | thermal->regs = devm_platform_get_and_ioremap_resource(pdev, index: 0, NULL); |
1543 | if (IS_ERR(ptr: thermal->regs)) |
1544 | return PTR_ERR(ptr: thermal->regs); |
1545 | |
1546 | thermal->reset = devm_reset_control_array_get_exclusive(dev: &pdev->dev); |
1547 | if (IS_ERR(ptr: thermal->reset)) |
1548 | return dev_err_probe(dev: &pdev->dev, err: PTR_ERR(ptr: thermal->reset), |
1549 | fmt: "failed to get tsadc reset.\n" ); |
1550 | |
1551 | thermal->clk = devm_clk_get_enabled(dev: &pdev->dev, id: "tsadc" ); |
1552 | if (IS_ERR(ptr: thermal->clk)) |
1553 | return dev_err_probe(dev: &pdev->dev, err: PTR_ERR(ptr: thermal->clk), |
1554 | fmt: "failed to get tsadc clock.\n" ); |
1555 | |
1556 | thermal->pclk = devm_clk_get_enabled(dev: &pdev->dev, id: "apb_pclk" ); |
1557 | if (IS_ERR(ptr: thermal->pclk)) |
1558 | return dev_err_probe(dev: &pdev->dev, err: PTR_ERR(ptr: thermal->pclk), |
1559 | fmt: "failed to get apb_pclk clock.\n" ); |
1560 | |
1561 | rockchip_thermal_reset_controller(reset: thermal->reset); |
1562 | |
1563 | error = rockchip_configure_from_dt(dev: &pdev->dev, np, thermal); |
1564 | if (error) |
1565 | return dev_err_probe(dev: &pdev->dev, err: error, |
1566 | fmt: "failed to parse device tree data\n" ); |
1567 | |
1568 | thermal->chip->initialize(thermal->grf, thermal->regs, |
1569 | thermal->tshut_polarity); |
1570 | |
1571 | for (i = 0; i < thermal->chip->chn_num; i++) { |
1572 | error = rockchip_thermal_register_sensor(pdev, thermal, |
1573 | sensor: &thermal->sensors[i], |
1574 | id: thermal->chip->chn_offset + i); |
1575 | if (error) |
1576 | return dev_err_probe(dev: &pdev->dev, err: error, |
1577 | fmt: "failed to register sensor[%d].\n" , i); |
1578 | } |
1579 | |
1580 | error = devm_request_threaded_irq(dev: &pdev->dev, irq, NULL, |
1581 | thread_fn: &rockchip_thermal_alarm_irq_thread, |
1582 | IRQF_ONESHOT, |
1583 | devname: "rockchip_thermal" , dev_id: thermal); |
1584 | if (error) |
1585 | return dev_err_probe(dev: &pdev->dev, err: error, |
1586 | fmt: "failed to request tsadc irq.\n" ); |
1587 | |
1588 | thermal->chip->control(thermal->regs, true); |
1589 | |
1590 | for (i = 0; i < thermal->chip->chn_num; i++) { |
1591 | rockchip_thermal_toggle_sensor(sensor: &thermal->sensors[i], on: true); |
1592 | error = thermal_add_hwmon_sysfs(tz: thermal->sensors[i].tzd); |
1593 | if (error) |
1594 | dev_warn(&pdev->dev, |
1595 | "failed to register sensor %d with hwmon: %d\n" , |
1596 | i, error); |
1597 | } |
1598 | |
1599 | platform_set_drvdata(pdev, data: thermal); |
1600 | |
1601 | return 0; |
1602 | } |
1603 | |
1604 | static void rockchip_thermal_remove(struct platform_device *pdev) |
1605 | { |
1606 | struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev); |
1607 | int i; |
1608 | |
1609 | for (i = 0; i < thermal->chip->chn_num; i++) { |
1610 | struct rockchip_thermal_sensor *sensor = &thermal->sensors[i]; |
1611 | |
1612 | thermal_remove_hwmon_sysfs(tz: sensor->tzd); |
1613 | rockchip_thermal_toggle_sensor(sensor, on: false); |
1614 | } |
1615 | |
1616 | thermal->chip->control(thermal->regs, false); |
1617 | } |
1618 | |
1619 | static int __maybe_unused rockchip_thermal_suspend(struct device *dev) |
1620 | { |
1621 | struct rockchip_thermal_data *thermal = dev_get_drvdata(dev); |
1622 | int i; |
1623 | |
1624 | for (i = 0; i < thermal->chip->chn_num; i++) |
1625 | rockchip_thermal_toggle_sensor(sensor: &thermal->sensors[i], on: false); |
1626 | |
1627 | thermal->chip->control(thermal->regs, false); |
1628 | |
1629 | clk_disable(clk: thermal->pclk); |
1630 | clk_disable(clk: thermal->clk); |
1631 | |
1632 | pinctrl_pm_select_sleep_state(dev); |
1633 | |
1634 | return 0; |
1635 | } |
1636 | |
1637 | static int __maybe_unused rockchip_thermal_resume(struct device *dev) |
1638 | { |
1639 | struct rockchip_thermal_data *thermal = dev_get_drvdata(dev); |
1640 | int i; |
1641 | int error; |
1642 | |
1643 | error = clk_enable(clk: thermal->clk); |
1644 | if (error) |
1645 | return error; |
1646 | |
1647 | error = clk_enable(clk: thermal->pclk); |
1648 | if (error) { |
1649 | clk_disable(clk: thermal->clk); |
1650 | return error; |
1651 | } |
1652 | |
1653 | rockchip_thermal_reset_controller(reset: thermal->reset); |
1654 | |
1655 | thermal->chip->initialize(thermal->grf, thermal->regs, |
1656 | thermal->tshut_polarity); |
1657 | |
1658 | for (i = 0; i < thermal->chip->chn_num; i++) { |
1659 | int id = thermal->sensors[i].id; |
1660 | |
1661 | thermal->chip->set_tshut_mode(id, thermal->regs, |
1662 | thermal->tshut_mode); |
1663 | |
1664 | error = thermal->chip->set_tshut_temp(&thermal->chip->table, |
1665 | id, thermal->regs, |
1666 | thermal->tshut_temp); |
1667 | if (error) |
1668 | dev_err(dev, "%s: invalid tshut=%d, error=%d\n" , |
1669 | __func__, thermal->tshut_temp, error); |
1670 | } |
1671 | |
1672 | thermal->chip->control(thermal->regs, true); |
1673 | |
1674 | for (i = 0; i < thermal->chip->chn_num; i++) |
1675 | rockchip_thermal_toggle_sensor(sensor: &thermal->sensors[i], on: true); |
1676 | |
1677 | pinctrl_pm_select_default_state(dev); |
1678 | |
1679 | return 0; |
1680 | } |
1681 | |
1682 | static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops, |
1683 | rockchip_thermal_suspend, rockchip_thermal_resume); |
1684 | |
1685 | static struct platform_driver rockchip_thermal_driver = { |
1686 | .driver = { |
1687 | .name = "rockchip-thermal" , |
1688 | .pm = &rockchip_thermal_pm_ops, |
1689 | .of_match_table = of_rockchip_thermal_match, |
1690 | }, |
1691 | .probe = rockchip_thermal_probe, |
1692 | .remove_new = rockchip_thermal_remove, |
1693 | }; |
1694 | |
1695 | module_platform_driver(rockchip_thermal_driver); |
1696 | |
1697 | MODULE_DESCRIPTION("ROCKCHIP THERMAL Driver" ); |
1698 | MODULE_AUTHOR("Rockchip, Inc." ); |
1699 | MODULE_LICENSE("GPL v2" ); |
1700 | MODULE_ALIAS("platform:rockchip-thermal" ); |
1701 | |