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cbac8f63 | 1 | /* |
678065d5 | 2 | * Copyright (c) 2014-2016, Fuzhou Rockchip Electronics Co., Ltd |
20f0af75 CW |
3 | * Caesar Wang <wxt@rock-chips.com> |
4 | * | |
cbac8f63 CW |
5 | * This program is free software; you can redistribute it and/or modify it |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | */ | |
14 | ||
15 | #include <linux/clk.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/interrupt.h> | |
18 | #include <linux/io.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/of.h> | |
21 | #include <linux/of_address.h> | |
22 | #include <linux/of_irq.h> | |
23 | #include <linux/platform_device.h> | |
b9484763 | 24 | #include <linux/regmap.h> |
cbac8f63 CW |
25 | #include <linux/reset.h> |
26 | #include <linux/thermal.h> | |
b9484763 | 27 | #include <linux/mfd/syscon.h> |
c970872e | 28 | #include <linux/pinctrl/consumer.h> |
cbac8f63 CW |
29 | |
30 | /** | |
31 | * If the temperature over a period of time High, | |
32 | * the resulting TSHUT gave CRU module,let it reset the entire chip, | |
33 | * or via GPIO give PMIC. | |
34 | */ | |
35 | enum tshut_mode { | |
36 | TSHUT_MODE_CRU = 0, | |
37 | TSHUT_MODE_GPIO, | |
38 | }; | |
39 | ||
40 | /** | |
13c1cfda | 41 | * The system Temperature Sensors tshut(tshut) polarity |
cbac8f63 CW |
42 | * the bit 8 is tshut polarity. |
43 | * 0: low active, 1: high active | |
44 | */ | |
45 | enum tshut_polarity { | |
46 | TSHUT_LOW_ACTIVE = 0, | |
47 | TSHUT_HIGH_ACTIVE, | |
48 | }; | |
49 | ||
50 | /** | |
1d98b618 CW |
51 | * The system has two Temperature Sensors. |
52 | * sensor0 is for CPU, and sensor1 is for GPU. | |
cbac8f63 CW |
53 | */ |
54 | enum sensor_id { | |
1d98b618 | 55 | SENSOR_CPU = 0, |
cbac8f63 CW |
56 | SENSOR_GPU, |
57 | }; | |
58 | ||
020ba95d | 59 | /** |
13c1cfda | 60 | * The conversion table has the adc value and temperature. |
952418a3 CW |
61 | * ADC_DECREMENT: the adc value is of diminishing.(e.g. rk3288_code_table) |
62 | * ADC_INCREMENT: the adc value is incremental.(e.g. rk3368_code_table) | |
13c1cfda | 63 | */ |
020ba95d CW |
64 | enum adc_sort_mode { |
65 | ADC_DECREMENT = 0, | |
66 | ADC_INCREMENT, | |
67 | }; | |
68 | ||
1d98b618 CW |
69 | /** |
70 | * The max sensors is two in rockchip SoCs. | |
71 | * Two sensors: CPU and GPU sensor. | |
72 | */ | |
73 | #define SOC_MAX_SENSORS 2 | |
74 | ||
13c1cfda | 75 | /** |
678065d5 | 76 | * struct chip_tsadc_table - hold information about chip-specific differences |
13c1cfda CW |
77 | * @id: conversion table |
78 | * @length: size of conversion table | |
79 | * @data_mask: mask to apply on data inputs | |
80 | * @mode: sort mode of this adc variant (incrementing or decrementing) | |
81 | */ | |
ce74110d CW |
82 | struct chip_tsadc_table { |
83 | const struct tsadc_table *id; | |
ce74110d | 84 | unsigned int length; |
ce74110d | 85 | u32 data_mask; |
020ba95d | 86 | enum adc_sort_mode mode; |
ce74110d CW |
87 | }; |
88 | ||
678065d5 CW |
89 | /** |
90 | * struct rockchip_tsadc_chip - hold the private data of tsadc chip | |
91 | * @chn_id[SOC_MAX_SENSORS]: the sensor id of chip correspond to the channel | |
92 | * @chn_num: the channel number of tsadc chip | |
93 | * @tshut_temp: the hardware-controlled shutdown temperature value | |
94 | * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO) | |
95 | * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH) | |
96 | * @initialize: SoC special initialize tsadc controller method | |
97 | * @irq_ack: clear the interrupt | |
98 | * @get_temp: get the temperature | |
14848502 | 99 | * @set_alarm_temp: set the high temperature interrupt |
678065d5 CW |
100 | * @set_tshut_temp: set the hardware-controlled shutdown temperature |
101 | * @set_tshut_mode: set the hardware-controlled shutdown mode | |
102 | * @table: the chip-specific conversion table | |
103 | */ | |
cbac8f63 | 104 | struct rockchip_tsadc_chip { |
1d98b618 CW |
105 | /* The sensor id of chip correspond to the ADC channel */ |
106 | int chn_id[SOC_MAX_SENSORS]; | |
107 | int chn_num; | |
108 | ||
cbac8f63 | 109 | /* The hardware-controlled tshut property */ |
437df217 | 110 | int tshut_temp; |
cbac8f63 CW |
111 | enum tshut_mode tshut_mode; |
112 | enum tshut_polarity tshut_polarity; | |
113 | ||
114 | /* Chip-wide methods */ | |
b9484763 CW |
115 | void (*initialize)(struct regmap *grf, |
116 | void __iomem *reg, enum tshut_polarity p); | |
cbac8f63 CW |
117 | void (*irq_ack)(void __iomem *reg); |
118 | void (*control)(void __iomem *reg, bool on); | |
119 | ||
120 | /* Per-sensor methods */ | |
cdd8b3f7 | 121 | int (*get_temp)(const struct chip_tsadc_table *table, |
ce74110d | 122 | int chn, void __iomem *reg, int *temp); |
d3530497 CW |
123 | int (*set_alarm_temp)(const struct chip_tsadc_table *table, |
124 | int chn, void __iomem *reg, int temp); | |
125 | int (*set_tshut_temp)(const struct chip_tsadc_table *table, | |
126 | int chn, void __iomem *reg, int temp); | |
cbac8f63 | 127 | void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m); |
ce74110d CW |
128 | |
129 | /* Per-table methods */ | |
130 | struct chip_tsadc_table table; | |
cbac8f63 CW |
131 | }; |
132 | ||
678065d5 CW |
133 | /** |
134 | * struct rockchip_thermal_sensor - hold the information of thermal sensor | |
135 | * @thermal: pointer to the platform/configuration data | |
136 | * @tzd: pointer to a thermal zone | |
137 | * @id: identifier of the thermal sensor | |
138 | */ | |
cbac8f63 CW |
139 | struct rockchip_thermal_sensor { |
140 | struct rockchip_thermal_data *thermal; | |
141 | struct thermal_zone_device *tzd; | |
1d98b618 | 142 | int id; |
cbac8f63 CW |
143 | }; |
144 | ||
678065d5 CW |
145 | /** |
146 | * struct rockchip_thermal_data - hold the private data of thermal driver | |
147 | * @chip: pointer to the platform/configuration data | |
148 | * @pdev: platform device of thermal | |
149 | * @reset: the reset controller of tsadc | |
150 | * @sensors[SOC_MAX_SENSORS]: the thermal sensor | |
151 | * @clk: the controller clock is divided by the exteral 24MHz | |
152 | * @pclk: the advanced peripherals bus clock | |
153 | * @grf: the general register file will be used to do static set by software | |
154 | * @regs: the base address of tsadc controller | |
155 | * @tshut_temp: the hardware-controlled shutdown temperature value | |
156 | * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO) | |
157 | * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH) | |
158 | */ | |
cbac8f63 CW |
159 | struct rockchip_thermal_data { |
160 | const struct rockchip_tsadc_chip *chip; | |
161 | struct platform_device *pdev; | |
162 | struct reset_control *reset; | |
163 | ||
1d98b618 | 164 | struct rockchip_thermal_sensor sensors[SOC_MAX_SENSORS]; |
cbac8f63 CW |
165 | |
166 | struct clk *clk; | |
167 | struct clk *pclk; | |
168 | ||
b9484763 | 169 | struct regmap *grf; |
cbac8f63 CW |
170 | void __iomem *regs; |
171 | ||
437df217 | 172 | int tshut_temp; |
cbac8f63 CW |
173 | enum tshut_mode tshut_mode; |
174 | enum tshut_polarity tshut_polarity; | |
175 | }; | |
176 | ||
952418a3 CW |
177 | /** |
178 | * TSADC Sensor Register description: | |
179 | * | |
180 | * TSADCV2_* are used for RK3288 SoCs, the other chips can reuse it. | |
181 | * TSADCV3_* are used for newer SoCs than RK3288. (e.g: RK3228, RK3399) | |
182 | * | |
183 | */ | |
b9484763 | 184 | #define TSADCV2_USER_CON 0x00 |
cbac8f63 CW |
185 | #define TSADCV2_AUTO_CON 0x04 |
186 | #define TSADCV2_INT_EN 0x08 | |
187 | #define TSADCV2_INT_PD 0x0c | |
188 | #define TSADCV2_DATA(chn) (0x20 + (chn) * 0x04) | |
14848502 | 189 | #define TSADCV2_COMP_INT(chn) (0x30 + (chn) * 0x04) |
cbac8f63 CW |
190 | #define TSADCV2_COMP_SHUT(chn) (0x40 + (chn) * 0x04) |
191 | #define TSADCV2_HIGHT_INT_DEBOUNCE 0x60 | |
192 | #define TSADCV2_HIGHT_TSHUT_DEBOUNCE 0x64 | |
193 | #define TSADCV2_AUTO_PERIOD 0x68 | |
194 | #define TSADCV2_AUTO_PERIOD_HT 0x6c | |
195 | ||
196 | #define TSADCV2_AUTO_EN BIT(0) | |
cbac8f63 CW |
197 | #define TSADCV2_AUTO_SRC_EN(chn) BIT(4 + (chn)) |
198 | #define TSADCV2_AUTO_TSHUT_POLARITY_HIGH BIT(8) | |
678065d5 | 199 | |
7ea38c6c | 200 | #define TSADCV3_AUTO_Q_SEL_EN BIT(1) |
cbac8f63 CW |
201 | |
202 | #define TSADCV2_INT_SRC_EN(chn) BIT(chn) | |
203 | #define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn)) | |
204 | #define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn)) | |
205 | ||
452e01b3 | 206 | #define TSADCV2_INT_PD_CLEAR_MASK ~BIT(8) |
952418a3 | 207 | #define TSADCV3_INT_PD_CLEAR_MASK ~BIT(16) |
cbac8f63 CW |
208 | |
209 | #define TSADCV2_DATA_MASK 0xfff | |
20f0af75 CW |
210 | #define TSADCV3_DATA_MASK 0x3ff |
211 | ||
cbac8f63 CW |
212 | #define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT 4 |
213 | #define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT 4 | |
46667879 CW |
214 | #define TSADCV2_AUTO_PERIOD_TIME 250 /* 250ms */ |
215 | #define TSADCV2_AUTO_PERIOD_HT_TIME 50 /* 50ms */ | |
5ef62de7 RH |
216 | #define TSADCV3_AUTO_PERIOD_TIME 1875 /* 2.5ms */ |
217 | #define TSADCV3_AUTO_PERIOD_HT_TIME 1875 /* 2.5ms */ | |
46667879 | 218 | |
b9484763 CW |
219 | #define TSADCV2_USER_INTER_PD_SOC 0x340 /* 13 clocks */ |
220 | ||
221 | #define GRF_SARADC_TESTBIT 0x0e644 | |
222 | #define GRF_TSADC_TESTBIT_L 0x0e648 | |
223 | #define GRF_TSADC_TESTBIT_H 0x0e64c | |
224 | ||
b9484763 CW |
225 | #define GRF_SARADC_TESTBIT_ON (0x10001 << 2) |
226 | #define GRF_TSADC_TESTBIT_H_ON (0x10001 << 2) | |
23f75e48 RH |
227 | #define GRF_TSADC_VCM_EN_L (0x10001 << 7) |
228 | #define GRF_TSADC_VCM_EN_H (0x10001 << 7) | |
cbac8f63 | 229 | |
7b02a5e7 | 230 | /** |
678065d5 CW |
231 | * struct tsadc_table - code to temperature conversion table |
232 | * @code: the value of adc channel | |
233 | * @temp: the temperature | |
7b02a5e7 | 234 | * Note: |
678065d5 | 235 | * code to temperature mapping of the temperature sensor is a piece wise linear |
7b02a5e7 CW |
236 | * curve.Any temperature, code faling between to 2 give temperatures can be |
237 | * linearly interpolated. | |
678065d5 | 238 | * Code to Temperature mapping should be updated based on manufacturer results. |
7b02a5e7 | 239 | */ |
678065d5 CW |
240 | struct tsadc_table { |
241 | u32 code; | |
242 | int temp; | |
243 | }; | |
244 | ||
952418a3 | 245 | static const struct tsadc_table rk3228_code_table[] = { |
7ea38c6c CW |
246 | {0, -40000}, |
247 | {588, -40000}, | |
248 | {593, -35000}, | |
249 | {598, -30000}, | |
250 | {603, -25000}, | |
251 | {608, -20000}, | |
252 | {613, -15000}, | |
253 | {618, -10000}, | |
254 | {623, -5000}, | |
255 | {629, 0}, | |
256 | {634, 5000}, | |
257 | {639, 10000}, | |
258 | {644, 15000}, | |
259 | {649, 20000}, | |
260 | {654, 25000}, | |
261 | {660, 30000}, | |
262 | {665, 35000}, | |
263 | {670, 40000}, | |
264 | {675, 45000}, | |
265 | {681, 50000}, | |
266 | {686, 55000}, | |
267 | {691, 60000}, | |
268 | {696, 65000}, | |
269 | {702, 70000}, | |
270 | {707, 75000}, | |
271 | {712, 80000}, | |
272 | {717, 85000}, | |
273 | {723, 90000}, | |
274 | {728, 95000}, | |
275 | {733, 100000}, | |
276 | {738, 105000}, | |
277 | {744, 110000}, | |
278 | {749, 115000}, | |
279 | {754, 120000}, | |
280 | {760, 125000}, | |
281 | {TSADCV2_DATA_MASK, 125000}, | |
7b02a5e7 CW |
282 | }; |
283 | ||
952418a3 | 284 | static const struct tsadc_table rk3288_code_table[] = { |
cbac8f63 CW |
285 | {TSADCV2_DATA_MASK, -40000}, |
286 | {3800, -40000}, | |
287 | {3792, -35000}, | |
288 | {3783, -30000}, | |
289 | {3774, -25000}, | |
290 | {3765, -20000}, | |
291 | {3756, -15000}, | |
292 | {3747, -10000}, | |
293 | {3737, -5000}, | |
294 | {3728, 0}, | |
295 | {3718, 5000}, | |
296 | {3708, 10000}, | |
297 | {3698, 15000}, | |
298 | {3688, 20000}, | |
299 | {3678, 25000}, | |
300 | {3667, 30000}, | |
301 | {3656, 35000}, | |
302 | {3645, 40000}, | |
303 | {3634, 45000}, | |
304 | {3623, 50000}, | |
305 | {3611, 55000}, | |
306 | {3600, 60000}, | |
307 | {3588, 65000}, | |
308 | {3575, 70000}, | |
309 | {3563, 75000}, | |
310 | {3550, 80000}, | |
311 | {3537, 85000}, | |
312 | {3524, 90000}, | |
313 | {3510, 95000}, | |
314 | {3496, 100000}, | |
315 | {3482, 105000}, | |
316 | {3467, 110000}, | |
317 | {3452, 115000}, | |
318 | {3437, 120000}, | |
319 | {3421, 125000}, | |
cadf29dc | 320 | {0, 125000}, |
cbac8f63 CW |
321 | }; |
322 | ||
eda519d5 RH |
323 | static const struct tsadc_table rk3328_code_table[] = { |
324 | {0, -40000}, | |
325 | {296, -40000}, | |
326 | {304, -35000}, | |
327 | {313, -30000}, | |
328 | {331, -20000}, | |
329 | {340, -15000}, | |
330 | {349, -10000}, | |
331 | {359, -5000}, | |
332 | {368, 0}, | |
333 | {378, 5000}, | |
334 | {388, 10000}, | |
335 | {398, 15000}, | |
336 | {408, 20000}, | |
337 | {418, 25000}, | |
338 | {429, 30000}, | |
339 | {440, 35000}, | |
340 | {451, 40000}, | |
341 | {462, 45000}, | |
342 | {473, 50000}, | |
343 | {485, 55000}, | |
344 | {496, 60000}, | |
345 | {508, 65000}, | |
346 | {521, 70000}, | |
347 | {533, 75000}, | |
348 | {546, 80000}, | |
349 | {559, 85000}, | |
350 | {572, 90000}, | |
351 | {586, 95000}, | |
352 | {600, 100000}, | |
353 | {614, 105000}, | |
354 | {629, 110000}, | |
355 | {644, 115000}, | |
356 | {659, 120000}, | |
357 | {675, 125000}, | |
358 | {TSADCV2_DATA_MASK, 125000}, | |
359 | }; | |
360 | ||
952418a3 | 361 | static const struct tsadc_table rk3368_code_table[] = { |
20f0af75 CW |
362 | {0, -40000}, |
363 | {106, -40000}, | |
364 | {108, -35000}, | |
365 | {110, -30000}, | |
366 | {112, -25000}, | |
367 | {114, -20000}, | |
368 | {116, -15000}, | |
369 | {118, -10000}, | |
370 | {120, -5000}, | |
371 | {122, 0}, | |
372 | {124, 5000}, | |
373 | {126, 10000}, | |
374 | {128, 15000}, | |
375 | {130, 20000}, | |
376 | {132, 25000}, | |
377 | {134, 30000}, | |
378 | {136, 35000}, | |
379 | {138, 40000}, | |
380 | {140, 45000}, | |
381 | {142, 50000}, | |
382 | {144, 55000}, | |
383 | {146, 60000}, | |
384 | {148, 65000}, | |
385 | {150, 70000}, | |
386 | {152, 75000}, | |
387 | {154, 80000}, | |
388 | {156, 85000}, | |
389 | {158, 90000}, | |
390 | {160, 95000}, | |
391 | {162, 100000}, | |
392 | {163, 105000}, | |
393 | {165, 110000}, | |
394 | {167, 115000}, | |
395 | {169, 120000}, | |
396 | {171, 125000}, | |
397 | {TSADCV3_DATA_MASK, 125000}, | |
398 | }; | |
399 | ||
952418a3 | 400 | static const struct tsadc_table rk3399_code_table[] = { |
7ea38c6c | 401 | {0, -40000}, |
f762a35d CW |
402 | {402, -40000}, |
403 | {410, -35000}, | |
404 | {419, -30000}, | |
405 | {427, -25000}, | |
406 | {436, -20000}, | |
407 | {444, -15000}, | |
408 | {453, -10000}, | |
409 | {461, -5000}, | |
410 | {470, 0}, | |
411 | {478, 5000}, | |
412 | {487, 10000}, | |
413 | {496, 15000}, | |
414 | {504, 20000}, | |
415 | {513, 25000}, | |
416 | {521, 30000}, | |
417 | {530, 35000}, | |
418 | {538, 40000}, | |
419 | {547, 45000}, | |
420 | {555, 50000}, | |
421 | {564, 55000}, | |
422 | {573, 60000}, | |
423 | {581, 65000}, | |
424 | {590, 70000}, | |
425 | {599, 75000}, | |
426 | {607, 80000}, | |
427 | {616, 85000}, | |
428 | {624, 90000}, | |
429 | {633, 95000}, | |
430 | {642, 100000}, | |
431 | {650, 105000}, | |
432 | {659, 110000}, | |
433 | {668, 115000}, | |
434 | {677, 120000}, | |
435 | {685, 125000}, | |
7ea38c6c | 436 | {TSADCV3_DATA_MASK, 125000}, |
b0d70338 CW |
437 | }; |
438 | ||
cdd8b3f7 | 439 | static u32 rk_tsadcv2_temp_to_code(const struct chip_tsadc_table *table, |
437df217 | 440 | int temp) |
cbac8f63 CW |
441 | { |
442 | int high, low, mid; | |
cadf29dc CW |
443 | unsigned long num; |
444 | unsigned int denom; | |
d3530497 | 445 | u32 error = table->data_mask; |
cbac8f63 CW |
446 | |
447 | low = 0; | |
cadf29dc | 448 | high = (table->length - 1) - 1; /* ignore the last check for table */ |
cbac8f63 CW |
449 | mid = (high + low) / 2; |
450 | ||
1f09ba82 | 451 | /* Return mask code data when the temp is over table range */ |
d3530497 | 452 | if (temp < table->id[low].temp || temp > table->id[high].temp) |
1f09ba82 | 453 | goto exit; |
cbac8f63 CW |
454 | |
455 | while (low <= high) { | |
cdd8b3f7 BN |
456 | if (temp == table->id[mid].temp) |
457 | return table->id[mid].code; | |
458 | else if (temp < table->id[mid].temp) | |
cbac8f63 CW |
459 | high = mid - 1; |
460 | else | |
461 | low = mid + 1; | |
462 | mid = (low + high) / 2; | |
463 | } | |
464 | ||
cadf29dc CW |
465 | /* |
466 | * The conversion code granularity provided by the table. Let's | |
467 | * assume that the relationship between temperature and | |
468 | * analog value between 2 table entries is linear and interpolate | |
469 | * to produce less granular result. | |
470 | */ | |
471 | num = abs(table->id[mid + 1].code - table->id[mid].code); | |
472 | num *= temp - table->id[mid].temp; | |
473 | denom = table->id[mid + 1].temp - table->id[mid].temp; | |
474 | ||
475 | switch (table->mode) { | |
476 | case ADC_DECREMENT: | |
477 | return table->id[mid].code - (num / denom); | |
478 | case ADC_INCREMENT: | |
479 | return table->id[mid].code + (num / denom); | |
480 | default: | |
481 | pr_err("%s: unknown table mode: %d\n", __func__, table->mode); | |
482 | return error; | |
483 | } | |
484 | ||
1f09ba82 | 485 | exit: |
e6ed1b4a BN |
486 | pr_err("%s: invalid temperature, temp=%d error=%d\n", |
487 | __func__, temp, error); | |
1f09ba82 | 488 | return error; |
cbac8f63 CW |
489 | } |
490 | ||
cdd8b3f7 BN |
491 | static int rk_tsadcv2_code_to_temp(const struct chip_tsadc_table *table, |
492 | u32 code, int *temp) | |
cbac8f63 | 493 | { |
d9a241cb | 494 | unsigned int low = 1; |
cdd8b3f7 | 495 | unsigned int high = table->length - 1; |
1e9a1aea CW |
496 | unsigned int mid = (low + high) / 2; |
497 | unsigned int num; | |
498 | unsigned long denom; | |
499 | ||
cdd8b3f7 | 500 | WARN_ON(table->length < 2); |
1e9a1aea | 501 | |
cdd8b3f7 | 502 | switch (table->mode) { |
020ba95d | 503 | case ADC_DECREMENT: |
cdd8b3f7 | 504 | code &= table->data_mask; |
db831886 | 505 | if (code <= table->id[high].code) |
020ba95d CW |
506 | return -EAGAIN; /* Incorrect reading */ |
507 | ||
508 | while (low <= high) { | |
cdd8b3f7 BN |
509 | if (code >= table->id[mid].code && |
510 | code < table->id[mid - 1].code) | |
020ba95d | 511 | break; |
cdd8b3f7 | 512 | else if (code < table->id[mid].code) |
020ba95d CW |
513 | low = mid + 1; |
514 | else | |
515 | high = mid - 1; | |
516 | ||
517 | mid = (low + high) / 2; | |
518 | } | |
519 | break; | |
520 | case ADC_INCREMENT: | |
cdd8b3f7 BN |
521 | code &= table->data_mask; |
522 | if (code < table->id[low].code) | |
020ba95d CW |
523 | return -EAGAIN; /* Incorrect reading */ |
524 | ||
525 | while (low <= high) { | |
cdd8b3f7 BN |
526 | if (code <= table->id[mid].code && |
527 | code > table->id[mid - 1].code) | |
020ba95d | 528 | break; |
cdd8b3f7 | 529 | else if (code > table->id[mid].code) |
020ba95d CW |
530 | low = mid + 1; |
531 | else | |
532 | high = mid - 1; | |
533 | ||
534 | mid = (low + high) / 2; | |
535 | } | |
536 | break; | |
537 | default: | |
cdd8b3f7 | 538 | pr_err("%s: unknown table mode: %d\n", __func__, table->mode); |
e6ed1b4a | 539 | return -EINVAL; |
cbac8f63 CW |
540 | } |
541 | ||
1e9a1aea CW |
542 | /* |
543 | * The 5C granularity provided by the table is too much. Let's | |
544 | * assume that the relationship between sensor readings and | |
545 | * temperature between 2 table entries is linear and interpolate | |
546 | * to produce less granular result. | |
547 | */ | |
cdd8b3f7 BN |
548 | num = table->id[mid].temp - table->id[mid - 1].temp; |
549 | num *= abs(table->id[mid - 1].code - code); | |
550 | denom = abs(table->id[mid - 1].code - table->id[mid].code); | |
551 | *temp = table->id[mid - 1].temp + (num / denom); | |
d9a241cb DT |
552 | |
553 | return 0; | |
cbac8f63 CW |
554 | } |
555 | ||
556 | /** | |
144c5565 CW |
557 | * rk_tsadcv2_initialize - initialize TASDC Controller. |
558 | * | |
559 | * (1) Set TSADC_V2_AUTO_PERIOD: | |
560 | * Configure the interleave between every two accessing of | |
561 | * TSADC in normal operation. | |
562 | * | |
563 | * (2) Set TSADCV2_AUTO_PERIOD_HT: | |
564 | * Configure the interleave between every two accessing of | |
565 | * TSADC after the temperature is higher than COM_SHUT or COM_INT. | |
566 | * | |
567 | * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE: | |
568 | * If the temperature is higher than COMP_INT or COMP_SHUT for | |
569 | * "debounce" times, TSADC controller will generate interrupt or TSHUT. | |
cbac8f63 | 570 | */ |
b9484763 | 571 | static void rk_tsadcv2_initialize(struct regmap *grf, void __iomem *regs, |
cbac8f63 CW |
572 | enum tshut_polarity tshut_polarity) |
573 | { | |
574 | if (tshut_polarity == TSHUT_HIGH_ACTIVE) | |
452e01b3 | 575 | writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH, |
cbac8f63 CW |
576 | regs + TSADCV2_AUTO_CON); |
577 | else | |
452e01b3 | 578 | writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH, |
cbac8f63 CW |
579 | regs + TSADCV2_AUTO_CON); |
580 | ||
581 | writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, regs + TSADCV2_AUTO_PERIOD); | |
582 | writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT, | |
583 | regs + TSADCV2_HIGHT_INT_DEBOUNCE); | |
584 | writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME, | |
585 | regs + TSADCV2_AUTO_PERIOD_HT); | |
586 | writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT, | |
587 | regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE); | |
b9484763 CW |
588 | } |
589 | ||
590 | /** | |
591 | * rk_tsadcv3_initialize - initialize TASDC Controller. | |
678065d5 | 592 | * |
b9484763 CW |
593 | * (1) The tsadc control power sequence. |
594 | * | |
595 | * (2) Set TSADC_V2_AUTO_PERIOD: | |
596 | * Configure the interleave between every two accessing of | |
597 | * TSADC in normal operation. | |
598 | * | |
599 | * (2) Set TSADCV2_AUTO_PERIOD_HT: | |
600 | * Configure the interleave between every two accessing of | |
601 | * TSADC after the temperature is higher than COM_SHUT or COM_INT. | |
602 | * | |
603 | * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE: | |
604 | * If the temperature is higher than COMP_INT or COMP_SHUT for | |
605 | * "debounce" times, TSADC controller will generate interrupt or TSHUT. | |
606 | */ | |
607 | static void rk_tsadcv3_initialize(struct regmap *grf, void __iomem *regs, | |
608 | enum tshut_polarity tshut_polarity) | |
609 | { | |
610 | /* The tsadc control power sequence */ | |
611 | if (IS_ERR(grf)) { | |
612 | /* Set interleave value to workround ic time sync issue */ | |
613 | writel_relaxed(TSADCV2_USER_INTER_PD_SOC, regs + | |
614 | TSADCV2_USER_CON); | |
46667879 CW |
615 | |
616 | writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, | |
617 | regs + TSADCV2_AUTO_PERIOD); | |
618 | writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT, | |
619 | regs + TSADCV2_HIGHT_INT_DEBOUNCE); | |
620 | writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME, | |
621 | regs + TSADCV2_AUTO_PERIOD_HT); | |
622 | writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT, | |
623 | regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE); | |
624 | ||
b9484763 | 625 | } else { |
23f75e48 RH |
626 | /* Enable the voltage common mode feature */ |
627 | regmap_write(grf, GRF_TSADC_TESTBIT_L, GRF_TSADC_VCM_EN_L); | |
628 | regmap_write(grf, GRF_TSADC_TESTBIT_H, GRF_TSADC_VCM_EN_H); | |
629 | ||
2fe5c1b0 | 630 | usleep_range(15, 100); /* The spec note says at least 15 us */ |
b9484763 CW |
631 | regmap_write(grf, GRF_SARADC_TESTBIT, GRF_SARADC_TESTBIT_ON); |
632 | regmap_write(grf, GRF_TSADC_TESTBIT_H, GRF_TSADC_TESTBIT_H_ON); | |
2fe5c1b0 | 633 | usleep_range(90, 200); /* The spec note says at least 90 us */ |
46667879 CW |
634 | |
635 | writel_relaxed(TSADCV3_AUTO_PERIOD_TIME, | |
636 | regs + TSADCV2_AUTO_PERIOD); | |
637 | writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT, | |
638 | regs + TSADCV2_HIGHT_INT_DEBOUNCE); | |
639 | writel_relaxed(TSADCV3_AUTO_PERIOD_HT_TIME, | |
640 | regs + TSADCV2_AUTO_PERIOD_HT); | |
641 | writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT, | |
642 | regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE); | |
b9484763 CW |
643 | } |
644 | ||
645 | if (tshut_polarity == TSHUT_HIGH_ACTIVE) | |
646 | writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH, | |
647 | regs + TSADCV2_AUTO_CON); | |
648 | else | |
649 | writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH, | |
650 | regs + TSADCV2_AUTO_CON); | |
cbac8f63 CW |
651 | } |
652 | ||
952418a3 | 653 | static void rk_tsadcv2_irq_ack(void __iomem *regs) |
7b02a5e7 CW |
654 | { |
655 | u32 val; | |
656 | ||
657 | val = readl_relaxed(regs + TSADCV2_INT_PD); | |
952418a3 | 658 | writel_relaxed(val & TSADCV2_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD); |
7b02a5e7 CW |
659 | } |
660 | ||
952418a3 | 661 | static void rk_tsadcv3_irq_ack(void __iomem *regs) |
cbac8f63 CW |
662 | { |
663 | u32 val; | |
664 | ||
665 | val = readl_relaxed(regs + TSADCV2_INT_PD); | |
952418a3 | 666 | writel_relaxed(val & TSADCV3_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD); |
cbac8f63 CW |
667 | } |
668 | ||
669 | static void rk_tsadcv2_control(void __iomem *regs, bool enable) | |
670 | { | |
671 | u32 val; | |
672 | ||
673 | val = readl_relaxed(regs + TSADCV2_AUTO_CON); | |
674 | if (enable) | |
675 | val |= TSADCV2_AUTO_EN; | |
676 | else | |
677 | val &= ~TSADCV2_AUTO_EN; | |
678 | ||
679 | writel_relaxed(val, regs + TSADCV2_AUTO_CON); | |
680 | } | |
681 | ||
7ea38c6c | 682 | /** |
678065d5 CW |
683 | * rk_tsadcv3_control - the tsadc controller is enabled or disabled. |
684 | * | |
685 | * NOTE: TSADC controller works at auto mode, and some SoCs need set the | |
686 | * tsadc_q_sel bit on TSADCV2_AUTO_CON[1]. The (1024 - tsadc_q) as output | |
687 | * adc value if setting this bit to enable. | |
7ea38c6c CW |
688 | */ |
689 | static void rk_tsadcv3_control(void __iomem *regs, bool enable) | |
690 | { | |
691 | u32 val; | |
692 | ||
693 | val = readl_relaxed(regs + TSADCV2_AUTO_CON); | |
694 | if (enable) | |
695 | val |= TSADCV2_AUTO_EN | TSADCV3_AUTO_Q_SEL_EN; | |
696 | else | |
697 | val &= ~TSADCV2_AUTO_EN; | |
698 | ||
699 | writel_relaxed(val, regs + TSADCV2_AUTO_CON); | |
700 | } | |
701 | ||
cdd8b3f7 | 702 | static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table, |
ce74110d | 703 | int chn, void __iomem *regs, int *temp) |
cbac8f63 CW |
704 | { |
705 | u32 val; | |
706 | ||
cbac8f63 | 707 | val = readl_relaxed(regs + TSADCV2_DATA(chn)); |
cbac8f63 | 708 | |
ce74110d | 709 | return rk_tsadcv2_code_to_temp(table, val, temp); |
cbac8f63 CW |
710 | } |
711 | ||
d3530497 CW |
712 | static int rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table, |
713 | int chn, void __iomem *regs, int temp) | |
14848502 | 714 | { |
18591add CW |
715 | u32 alarm_value; |
716 | u32 int_en, int_clr; | |
717 | ||
718 | /* | |
719 | * In some cases, some sensors didn't need the trip points, the | |
720 | * set_trips will pass {-INT_MAX, INT_MAX} to trigger tsadc alarm | |
721 | * in the end, ignore this case and disable the high temperature | |
722 | * interrupt. | |
723 | */ | |
724 | if (temp == INT_MAX) { | |
725 | int_clr = readl_relaxed(regs + TSADCV2_INT_EN); | |
726 | int_clr &= ~TSADCV2_INT_SRC_EN(chn); | |
727 | writel_relaxed(int_clr, regs + TSADCV2_INT_EN); | |
728 | return 0; | |
729 | } | |
14848502 | 730 | |
1f09ba82 | 731 | /* Make sure the value is valid */ |
14848502 | 732 | alarm_value = rk_tsadcv2_temp_to_code(table, temp); |
cdd8b3f7 | 733 | if (alarm_value == table->data_mask) |
d3530497 | 734 | return -ERANGE; |
1f09ba82 | 735 | |
cdd8b3f7 | 736 | writel_relaxed(alarm_value & table->data_mask, |
14848502 CW |
737 | regs + TSADCV2_COMP_INT(chn)); |
738 | ||
739 | int_en = readl_relaxed(regs + TSADCV2_INT_EN); | |
740 | int_en |= TSADCV2_INT_SRC_EN(chn); | |
741 | writel_relaxed(int_en, regs + TSADCV2_INT_EN); | |
d3530497 CW |
742 | |
743 | return 0; | |
14848502 CW |
744 | } |
745 | ||
d3530497 CW |
746 | static int rk_tsadcv2_tshut_temp(const struct chip_tsadc_table *table, |
747 | int chn, void __iomem *regs, int temp) | |
cbac8f63 CW |
748 | { |
749 | u32 tshut_value, val; | |
750 | ||
1f09ba82 | 751 | /* Make sure the value is valid */ |
ce74110d | 752 | tshut_value = rk_tsadcv2_temp_to_code(table, temp); |
cdd8b3f7 | 753 | if (tshut_value == table->data_mask) |
d3530497 | 754 | return -ERANGE; |
1f09ba82 | 755 | |
cbac8f63 CW |
756 | writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn)); |
757 | ||
758 | /* TSHUT will be valid */ | |
759 | val = readl_relaxed(regs + TSADCV2_AUTO_CON); | |
760 | writel_relaxed(val | TSADCV2_AUTO_SRC_EN(chn), regs + TSADCV2_AUTO_CON); | |
d3530497 CW |
761 | |
762 | return 0; | |
cbac8f63 CW |
763 | } |
764 | ||
765 | static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs, | |
766 | enum tshut_mode mode) | |
767 | { | |
768 | u32 val; | |
769 | ||
770 | val = readl_relaxed(regs + TSADCV2_INT_EN); | |
771 | if (mode == TSHUT_MODE_GPIO) { | |
772 | val &= ~TSADCV2_SHUT_2CRU_SRC_EN(chn); | |
773 | val |= TSADCV2_SHUT_2GPIO_SRC_EN(chn); | |
774 | } else { | |
775 | val &= ~TSADCV2_SHUT_2GPIO_SRC_EN(chn); | |
776 | val |= TSADCV2_SHUT_2CRU_SRC_EN(chn); | |
777 | } | |
778 | ||
779 | writel_relaxed(val, regs + TSADCV2_INT_EN); | |
780 | } | |
781 | ||
7b02a5e7 CW |
782 | static const struct rockchip_tsadc_chip rk3228_tsadc_data = { |
783 | .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */ | |
784 | .chn_num = 1, /* one channel for tsadc */ | |
785 | ||
786 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ | |
787 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ | |
788 | .tshut_temp = 95000, | |
789 | ||
790 | .initialize = rk_tsadcv2_initialize, | |
952418a3 | 791 | .irq_ack = rk_tsadcv3_irq_ack, |
7ea38c6c | 792 | .control = rk_tsadcv3_control, |
7b02a5e7 | 793 | .get_temp = rk_tsadcv2_get_temp, |
14848502 | 794 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
7b02a5e7 CW |
795 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
796 | .set_tshut_mode = rk_tsadcv2_tshut_mode, | |
797 | ||
798 | .table = { | |
952418a3 CW |
799 | .id = rk3228_code_table, |
800 | .length = ARRAY_SIZE(rk3228_code_table), | |
7b02a5e7 | 801 | .data_mask = TSADCV3_DATA_MASK, |
7ea38c6c | 802 | .mode = ADC_INCREMENT, |
7b02a5e7 CW |
803 | }, |
804 | }; | |
805 | ||
cbac8f63 | 806 | static const struct rockchip_tsadc_chip rk3288_tsadc_data = { |
1d98b618 CW |
807 | .chn_id[SENSOR_CPU] = 1, /* cpu sensor is channel 1 */ |
808 | .chn_id[SENSOR_GPU] = 2, /* gpu sensor is channel 2 */ | |
809 | .chn_num = 2, /* two channels for tsadc */ | |
810 | ||
cbac8f63 CW |
811 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
812 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ | |
813 | .tshut_temp = 95000, | |
814 | ||
815 | .initialize = rk_tsadcv2_initialize, | |
816 | .irq_ack = rk_tsadcv2_irq_ack, | |
817 | .control = rk_tsadcv2_control, | |
818 | .get_temp = rk_tsadcv2_get_temp, | |
14848502 | 819 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
cbac8f63 CW |
820 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
821 | .set_tshut_mode = rk_tsadcv2_tshut_mode, | |
ce74110d CW |
822 | |
823 | .table = { | |
952418a3 CW |
824 | .id = rk3288_code_table, |
825 | .length = ARRAY_SIZE(rk3288_code_table), | |
ce74110d | 826 | .data_mask = TSADCV2_DATA_MASK, |
020ba95d | 827 | .mode = ADC_DECREMENT, |
ce74110d | 828 | }, |
cbac8f63 CW |
829 | }; |
830 | ||
eda519d5 RH |
831 | static const struct rockchip_tsadc_chip rk3328_tsadc_data = { |
832 | .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */ | |
833 | .chn_num = 1, /* one channels for tsadc */ | |
834 | ||
835 | .tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */ | |
836 | .tshut_temp = 95000, | |
837 | ||
838 | .initialize = rk_tsadcv2_initialize, | |
839 | .irq_ack = rk_tsadcv3_irq_ack, | |
840 | .control = rk_tsadcv3_control, | |
841 | .get_temp = rk_tsadcv2_get_temp, | |
842 | .set_alarm_temp = rk_tsadcv2_alarm_temp, | |
843 | .set_tshut_temp = rk_tsadcv2_tshut_temp, | |
844 | .set_tshut_mode = rk_tsadcv2_tshut_mode, | |
845 | ||
846 | .table = { | |
847 | .id = rk3328_code_table, | |
848 | .length = ARRAY_SIZE(rk3328_code_table), | |
849 | .data_mask = TSADCV2_DATA_MASK, | |
850 | .mode = ADC_INCREMENT, | |
851 | }, | |
852 | }; | |
853 | ||
1cd60269 EZ |
854 | static const struct rockchip_tsadc_chip rk3366_tsadc_data = { |
855 | .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */ | |
856 | .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */ | |
857 | .chn_num = 2, /* two channels for tsadc */ | |
858 | ||
859 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ | |
860 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ | |
861 | .tshut_temp = 95000, | |
862 | ||
863 | .initialize = rk_tsadcv3_initialize, | |
864 | .irq_ack = rk_tsadcv3_irq_ack, | |
865 | .control = rk_tsadcv3_control, | |
866 | .get_temp = rk_tsadcv2_get_temp, | |
14848502 | 867 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
1cd60269 EZ |
868 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
869 | .set_tshut_mode = rk_tsadcv2_tshut_mode, | |
870 | ||
871 | .table = { | |
872 | .id = rk3228_code_table, | |
873 | .length = ARRAY_SIZE(rk3228_code_table), | |
874 | .data_mask = TSADCV3_DATA_MASK, | |
875 | .mode = ADC_INCREMENT, | |
876 | }, | |
877 | }; | |
878 | ||
20f0af75 CW |
879 | static const struct rockchip_tsadc_chip rk3368_tsadc_data = { |
880 | .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */ | |
881 | .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */ | |
882 | .chn_num = 2, /* two channels for tsadc */ | |
883 | ||
884 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ | |
885 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ | |
886 | .tshut_temp = 95000, | |
887 | ||
888 | .initialize = rk_tsadcv2_initialize, | |
889 | .irq_ack = rk_tsadcv2_irq_ack, | |
890 | .control = rk_tsadcv2_control, | |
891 | .get_temp = rk_tsadcv2_get_temp, | |
14848502 | 892 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
20f0af75 CW |
893 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
894 | .set_tshut_mode = rk_tsadcv2_tshut_mode, | |
895 | ||
896 | .table = { | |
952418a3 CW |
897 | .id = rk3368_code_table, |
898 | .length = ARRAY_SIZE(rk3368_code_table), | |
20f0af75 CW |
899 | .data_mask = TSADCV3_DATA_MASK, |
900 | .mode = ADC_INCREMENT, | |
901 | }, | |
902 | }; | |
903 | ||
b0d70338 CW |
904 | static const struct rockchip_tsadc_chip rk3399_tsadc_data = { |
905 | .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */ | |
906 | .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */ | |
907 | .chn_num = 2, /* two channels for tsadc */ | |
908 | ||
909 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ | |
910 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ | |
911 | .tshut_temp = 95000, | |
912 | ||
b9484763 | 913 | .initialize = rk_tsadcv3_initialize, |
952418a3 | 914 | .irq_ack = rk_tsadcv3_irq_ack, |
7ea38c6c | 915 | .control = rk_tsadcv3_control, |
b0d70338 | 916 | .get_temp = rk_tsadcv2_get_temp, |
14848502 | 917 | .set_alarm_temp = rk_tsadcv2_alarm_temp, |
b0d70338 CW |
918 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
919 | .set_tshut_mode = rk_tsadcv2_tshut_mode, | |
920 | ||
921 | .table = { | |
952418a3 CW |
922 | .id = rk3399_code_table, |
923 | .length = ARRAY_SIZE(rk3399_code_table), | |
b0d70338 | 924 | .data_mask = TSADCV3_DATA_MASK, |
7ea38c6c | 925 | .mode = ADC_INCREMENT, |
b0d70338 CW |
926 | }, |
927 | }; | |
928 | ||
cbac8f63 | 929 | static const struct of_device_id of_rockchip_thermal_match[] = { |
7b02a5e7 CW |
930 | { |
931 | .compatible = "rockchip,rk3228-tsadc", | |
932 | .data = (void *)&rk3228_tsadc_data, | |
933 | }, | |
cbac8f63 CW |
934 | { |
935 | .compatible = "rockchip,rk3288-tsadc", | |
936 | .data = (void *)&rk3288_tsadc_data, | |
937 | }, | |
eda519d5 RH |
938 | { |
939 | .compatible = "rockchip,rk3328-tsadc", | |
940 | .data = (void *)&rk3328_tsadc_data, | |
941 | }, | |
1cd60269 EZ |
942 | { |
943 | .compatible = "rockchip,rk3366-tsadc", | |
944 | .data = (void *)&rk3366_tsadc_data, | |
945 | }, | |
20f0af75 CW |
946 | { |
947 | .compatible = "rockchip,rk3368-tsadc", | |
948 | .data = (void *)&rk3368_tsadc_data, | |
949 | }, | |
b0d70338 CW |
950 | { |
951 | .compatible = "rockchip,rk3399-tsadc", | |
952 | .data = (void *)&rk3399_tsadc_data, | |
953 | }, | |
cbac8f63 CW |
954 | { /* end */ }, |
955 | }; | |
956 | MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match); | |
957 | ||
958 | static void | |
959 | rockchip_thermal_toggle_sensor(struct rockchip_thermal_sensor *sensor, bool on) | |
960 | { | |
961 | struct thermal_zone_device *tzd = sensor->tzd; | |
962 | ||
963 | tzd->ops->set_mode(tzd, | |
964 | on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED); | |
965 | } | |
966 | ||
967 | static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev) | |
968 | { | |
969 | struct rockchip_thermal_data *thermal = dev; | |
970 | int i; | |
971 | ||
972 | dev_dbg(&thermal->pdev->dev, "thermal alarm\n"); | |
973 | ||
974 | thermal->chip->irq_ack(thermal->regs); | |
975 | ||
1d98b618 | 976 | for (i = 0; i < thermal->chip->chn_num; i++) |
0e70f466 SP |
977 | thermal_zone_device_update(thermal->sensors[i].tzd, |
978 | THERMAL_EVENT_UNSPECIFIED); | |
cbac8f63 CW |
979 | |
980 | return IRQ_HANDLED; | |
981 | } | |
982 | ||
14848502 CW |
983 | static int rockchip_thermal_set_trips(void *_sensor, int low, int high) |
984 | { | |
985 | struct rockchip_thermal_sensor *sensor = _sensor; | |
986 | struct rockchip_thermal_data *thermal = sensor->thermal; | |
987 | const struct rockchip_tsadc_chip *tsadc = thermal->chip; | |
988 | ||
989 | dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %d, high %d\n", | |
990 | __func__, sensor->id, low, high); | |
991 | ||
d3530497 CW |
992 | return tsadc->set_alarm_temp(&tsadc->table, |
993 | sensor->id, thermal->regs, high); | |
14848502 CW |
994 | } |
995 | ||
17e8351a | 996 | static int rockchip_thermal_get_temp(void *_sensor, int *out_temp) |
cbac8f63 CW |
997 | { |
998 | struct rockchip_thermal_sensor *sensor = _sensor; | |
999 | struct rockchip_thermal_data *thermal = sensor->thermal; | |
1000 | const struct rockchip_tsadc_chip *tsadc = sensor->thermal->chip; | |
1001 | int retval; | |
1002 | ||
cdd8b3f7 | 1003 | retval = tsadc->get_temp(&tsadc->table, |
ce74110d | 1004 | sensor->id, thermal->regs, out_temp); |
17e8351a | 1005 | dev_dbg(&thermal->pdev->dev, "sensor %d - temp: %d, retval: %d\n", |
cbac8f63 CW |
1006 | sensor->id, *out_temp, retval); |
1007 | ||
1008 | return retval; | |
1009 | } | |
1010 | ||
1011 | static const struct thermal_zone_of_device_ops rockchip_of_thermal_ops = { | |
1012 | .get_temp = rockchip_thermal_get_temp, | |
14848502 | 1013 | .set_trips = rockchip_thermal_set_trips, |
cbac8f63 CW |
1014 | }; |
1015 | ||
1016 | static int rockchip_configure_from_dt(struct device *dev, | |
1017 | struct device_node *np, | |
1018 | struct rockchip_thermal_data *thermal) | |
1019 | { | |
1020 | u32 shut_temp, tshut_mode, tshut_polarity; | |
1021 | ||
1022 | if (of_property_read_u32(np, "rockchip,hw-tshut-temp", &shut_temp)) { | |
1023 | dev_warn(dev, | |
437df217 | 1024 | "Missing tshut temp property, using default %d\n", |
cbac8f63 CW |
1025 | thermal->chip->tshut_temp); |
1026 | thermal->tshut_temp = thermal->chip->tshut_temp; | |
1027 | } else { | |
43b4eb9f CW |
1028 | if (shut_temp > INT_MAX) { |
1029 | dev_err(dev, "Invalid tshut temperature specified: %d\n", | |
1030 | shut_temp); | |
1031 | return -ERANGE; | |
1032 | } | |
cbac8f63 CW |
1033 | thermal->tshut_temp = shut_temp; |
1034 | } | |
1035 | ||
cbac8f63 CW |
1036 | if (of_property_read_u32(np, "rockchip,hw-tshut-mode", &tshut_mode)) { |
1037 | dev_warn(dev, | |
1038 | "Missing tshut mode property, using default (%s)\n", | |
1039 | thermal->chip->tshut_mode == TSHUT_MODE_GPIO ? | |
1040 | "gpio" : "cru"); | |
1041 | thermal->tshut_mode = thermal->chip->tshut_mode; | |
1042 | } else { | |
1043 | thermal->tshut_mode = tshut_mode; | |
1044 | } | |
1045 | ||
1046 | if (thermal->tshut_mode > 1) { | |
1047 | dev_err(dev, "Invalid tshut mode specified: %d\n", | |
1048 | thermal->tshut_mode); | |
1049 | return -EINVAL; | |
1050 | } | |
1051 | ||
1052 | if (of_property_read_u32(np, "rockchip,hw-tshut-polarity", | |
1053 | &tshut_polarity)) { | |
1054 | dev_warn(dev, | |
1055 | "Missing tshut-polarity property, using default (%s)\n", | |
1056 | thermal->chip->tshut_polarity == TSHUT_LOW_ACTIVE ? | |
1057 | "low" : "high"); | |
1058 | thermal->tshut_polarity = thermal->chip->tshut_polarity; | |
1059 | } else { | |
1060 | thermal->tshut_polarity = tshut_polarity; | |
1061 | } | |
1062 | ||
1063 | if (thermal->tshut_polarity > 1) { | |
1064 | dev_err(dev, "Invalid tshut-polarity specified: %d\n", | |
1065 | thermal->tshut_polarity); | |
1066 | return -EINVAL; | |
1067 | } | |
1068 | ||
b9484763 CW |
1069 | /* The tsadc wont to handle the error in here since some SoCs didn't |
1070 | * need this property. | |
1071 | */ | |
1072 | thermal->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf"); | |
ce62abae SL |
1073 | if (IS_ERR(thermal->grf)) |
1074 | dev_warn(dev, "Missing rockchip,grf property\n"); | |
b9484763 | 1075 | |
cbac8f63 CW |
1076 | return 0; |
1077 | } | |
1078 | ||
1079 | static int | |
1080 | rockchip_thermal_register_sensor(struct platform_device *pdev, | |
1081 | struct rockchip_thermal_data *thermal, | |
1082 | struct rockchip_thermal_sensor *sensor, | |
1d98b618 | 1083 | int id) |
cbac8f63 CW |
1084 | { |
1085 | const struct rockchip_tsadc_chip *tsadc = thermal->chip; | |
1086 | int error; | |
1087 | ||
1088 | tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode); | |
d3530497 CW |
1089 | |
1090 | error = tsadc->set_tshut_temp(&tsadc->table, id, thermal->regs, | |
ce74110d | 1091 | thermal->tshut_temp); |
d3530497 CW |
1092 | if (error) |
1093 | dev_err(&pdev->dev, "%s: invalid tshut=%d, error=%d\n", | |
1094 | __func__, thermal->tshut_temp, error); | |
cbac8f63 CW |
1095 | |
1096 | sensor->thermal = thermal; | |
1097 | sensor->id = id; | |
2633ad19 EV |
1098 | sensor->tzd = devm_thermal_zone_of_sensor_register(&pdev->dev, id, |
1099 | sensor, &rockchip_of_thermal_ops); | |
cbac8f63 CW |
1100 | if (IS_ERR(sensor->tzd)) { |
1101 | error = PTR_ERR(sensor->tzd); | |
1102 | dev_err(&pdev->dev, "failed to register sensor %d: %d\n", | |
1103 | id, error); | |
1104 | return error; | |
1105 | } | |
1106 | ||
1107 | return 0; | |
1108 | } | |
1109 | ||
13c1cfda | 1110 | /** |
cbac8f63 CW |
1111 | * Reset TSADC Controller, reset all tsadc registers. |
1112 | */ | |
1113 | static void rockchip_thermal_reset_controller(struct reset_control *reset) | |
1114 | { | |
1115 | reset_control_assert(reset); | |
1116 | usleep_range(10, 20); | |
1117 | reset_control_deassert(reset); | |
1118 | } | |
1119 | ||
1120 | static int rockchip_thermal_probe(struct platform_device *pdev) | |
1121 | { | |
1122 | struct device_node *np = pdev->dev.of_node; | |
1123 | struct rockchip_thermal_data *thermal; | |
1124 | const struct of_device_id *match; | |
1125 | struct resource *res; | |
1126 | int irq; | |
2633ad19 | 1127 | int i; |
cbac8f63 CW |
1128 | int error; |
1129 | ||
1130 | match = of_match_node(of_rockchip_thermal_match, np); | |
1131 | if (!match) | |
1132 | return -ENXIO; | |
1133 | ||
1134 | irq = platform_get_irq(pdev, 0); | |
1135 | if (irq < 0) { | |
1136 | dev_err(&pdev->dev, "no irq resource?\n"); | |
1137 | return -EINVAL; | |
1138 | } | |
1139 | ||
1140 | thermal = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_thermal_data), | |
1141 | GFP_KERNEL); | |
1142 | if (!thermal) | |
1143 | return -ENOMEM; | |
1144 | ||
1145 | thermal->pdev = pdev; | |
1146 | ||
1147 | thermal->chip = (const struct rockchip_tsadc_chip *)match->data; | |
1148 | if (!thermal->chip) | |
1149 | return -EINVAL; | |
1150 | ||
1151 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1152 | thermal->regs = devm_ioremap_resource(&pdev->dev, res); | |
1153 | if (IS_ERR(thermal->regs)) | |
1154 | return PTR_ERR(thermal->regs); | |
1155 | ||
1156 | thermal->reset = devm_reset_control_get(&pdev->dev, "tsadc-apb"); | |
1157 | if (IS_ERR(thermal->reset)) { | |
1158 | error = PTR_ERR(thermal->reset); | |
1159 | dev_err(&pdev->dev, "failed to get tsadc reset: %d\n", error); | |
1160 | return error; | |
1161 | } | |
1162 | ||
1163 | thermal->clk = devm_clk_get(&pdev->dev, "tsadc"); | |
1164 | if (IS_ERR(thermal->clk)) { | |
1165 | error = PTR_ERR(thermal->clk); | |
1166 | dev_err(&pdev->dev, "failed to get tsadc clock: %d\n", error); | |
1167 | return error; | |
1168 | } | |
1169 | ||
1170 | thermal->pclk = devm_clk_get(&pdev->dev, "apb_pclk"); | |
1171 | if (IS_ERR(thermal->pclk)) { | |
0d0a2bf6 | 1172 | error = PTR_ERR(thermal->pclk); |
cbac8f63 CW |
1173 | dev_err(&pdev->dev, "failed to get apb_pclk clock: %d\n", |
1174 | error); | |
1175 | return error; | |
1176 | } | |
1177 | ||
1178 | error = clk_prepare_enable(thermal->clk); | |
1179 | if (error) { | |
1180 | dev_err(&pdev->dev, "failed to enable converter clock: %d\n", | |
1181 | error); | |
1182 | return error; | |
1183 | } | |
1184 | ||
1185 | error = clk_prepare_enable(thermal->pclk); | |
1186 | if (error) { | |
1187 | dev_err(&pdev->dev, "failed to enable pclk: %d\n", error); | |
1188 | goto err_disable_clk; | |
1189 | } | |
1190 | ||
1191 | rockchip_thermal_reset_controller(thermal->reset); | |
1192 | ||
1193 | error = rockchip_configure_from_dt(&pdev->dev, np, thermal); | |
1194 | if (error) { | |
1195 | dev_err(&pdev->dev, "failed to parse device tree data: %d\n", | |
1196 | error); | |
1197 | goto err_disable_pclk; | |
1198 | } | |
1199 | ||
b9484763 CW |
1200 | thermal->chip->initialize(thermal->grf, thermal->regs, |
1201 | thermal->tshut_polarity); | |
cbac8f63 | 1202 | |
1d98b618 CW |
1203 | for (i = 0; i < thermal->chip->chn_num; i++) { |
1204 | error = rockchip_thermal_register_sensor(pdev, thermal, | |
1205 | &thermal->sensors[i], | |
1206 | thermal->chip->chn_id[i]); | |
1207 | if (error) { | |
1208 | dev_err(&pdev->dev, | |
1209 | "failed to register sensor[%d] : error = %d\n", | |
1210 | i, error); | |
1d98b618 CW |
1211 | goto err_disable_pclk; |
1212 | } | |
cbac8f63 CW |
1213 | } |
1214 | ||
1215 | error = devm_request_threaded_irq(&pdev->dev, irq, NULL, | |
1216 | &rockchip_thermal_alarm_irq_thread, | |
1217 | IRQF_ONESHOT, | |
1218 | "rockchip_thermal", thermal); | |
1219 | if (error) { | |
1220 | dev_err(&pdev->dev, | |
1221 | "failed to request tsadc irq: %d\n", error); | |
2633ad19 | 1222 | goto err_disable_pclk; |
cbac8f63 CW |
1223 | } |
1224 | ||
1225 | thermal->chip->control(thermal->regs, true); | |
1226 | ||
1d98b618 | 1227 | for (i = 0; i < thermal->chip->chn_num; i++) |
cbac8f63 CW |
1228 | rockchip_thermal_toggle_sensor(&thermal->sensors[i], true); |
1229 | ||
1230 | platform_set_drvdata(pdev, thermal); | |
1231 | ||
1232 | return 0; | |
1233 | ||
cbac8f63 CW |
1234 | err_disable_pclk: |
1235 | clk_disable_unprepare(thermal->pclk); | |
1236 | err_disable_clk: | |
1237 | clk_disable_unprepare(thermal->clk); | |
1238 | ||
1239 | return error; | |
1240 | } | |
1241 | ||
1242 | static int rockchip_thermal_remove(struct platform_device *pdev) | |
1243 | { | |
1244 | struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev); | |
1245 | int i; | |
1246 | ||
1d98b618 | 1247 | for (i = 0; i < thermal->chip->chn_num; i++) { |
cbac8f63 CW |
1248 | struct rockchip_thermal_sensor *sensor = &thermal->sensors[i]; |
1249 | ||
1250 | rockchip_thermal_toggle_sensor(sensor, false); | |
cbac8f63 CW |
1251 | } |
1252 | ||
1253 | thermal->chip->control(thermal->regs, false); | |
1254 | ||
1255 | clk_disable_unprepare(thermal->pclk); | |
1256 | clk_disable_unprepare(thermal->clk); | |
1257 | ||
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | static int __maybe_unused rockchip_thermal_suspend(struct device *dev) | |
1262 | { | |
1263 | struct platform_device *pdev = to_platform_device(dev); | |
1264 | struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev); | |
1265 | int i; | |
1266 | ||
1d98b618 | 1267 | for (i = 0; i < thermal->chip->chn_num; i++) |
cbac8f63 CW |
1268 | rockchip_thermal_toggle_sensor(&thermal->sensors[i], false); |
1269 | ||
1270 | thermal->chip->control(thermal->regs, false); | |
1271 | ||
1272 | clk_disable(thermal->pclk); | |
1273 | clk_disable(thermal->clk); | |
1274 | ||
7e38a5b1 CW |
1275 | pinctrl_pm_select_sleep_state(dev); |
1276 | ||
cbac8f63 CW |
1277 | return 0; |
1278 | } | |
1279 | ||
1280 | static int __maybe_unused rockchip_thermal_resume(struct device *dev) | |
1281 | { | |
1282 | struct platform_device *pdev = to_platform_device(dev); | |
1283 | struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev); | |
1284 | int i; | |
1285 | int error; | |
1286 | ||
1287 | error = clk_enable(thermal->clk); | |
1288 | if (error) | |
1289 | return error; | |
1290 | ||
1291 | error = clk_enable(thermal->pclk); | |
ab5b52f1 SL |
1292 | if (error) { |
1293 | clk_disable(thermal->clk); | |
cbac8f63 | 1294 | return error; |
ab5b52f1 | 1295 | } |
cbac8f63 CW |
1296 | |
1297 | rockchip_thermal_reset_controller(thermal->reset); | |
1298 | ||
b9484763 CW |
1299 | thermal->chip->initialize(thermal->grf, thermal->regs, |
1300 | thermal->tshut_polarity); | |
cbac8f63 | 1301 | |
1d98b618 CW |
1302 | for (i = 0; i < thermal->chip->chn_num; i++) { |
1303 | int id = thermal->sensors[i].id; | |
cbac8f63 CW |
1304 | |
1305 | thermal->chip->set_tshut_mode(id, thermal->regs, | |
1306 | thermal->tshut_mode); | |
d3530497 CW |
1307 | |
1308 | error = thermal->chip->set_tshut_temp(&thermal->chip->table, | |
ce74110d | 1309 | id, thermal->regs, |
cbac8f63 | 1310 | thermal->tshut_temp); |
d3530497 CW |
1311 | if (error) |
1312 | dev_err(&pdev->dev, "%s: invalid tshut=%d, error=%d\n", | |
1313 | __func__, thermal->tshut_temp, error); | |
cbac8f63 CW |
1314 | } |
1315 | ||
1316 | thermal->chip->control(thermal->regs, true); | |
1317 | ||
1d98b618 | 1318 | for (i = 0; i < thermal->chip->chn_num; i++) |
cbac8f63 CW |
1319 | rockchip_thermal_toggle_sensor(&thermal->sensors[i], true); |
1320 | ||
7e38a5b1 CW |
1321 | pinctrl_pm_select_default_state(dev); |
1322 | ||
cbac8f63 CW |
1323 | return 0; |
1324 | } | |
1325 | ||
1326 | static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops, | |
1327 | rockchip_thermal_suspend, rockchip_thermal_resume); | |
1328 | ||
1329 | static struct platform_driver rockchip_thermal_driver = { | |
1330 | .driver = { | |
1331 | .name = "rockchip-thermal", | |
cbac8f63 CW |
1332 | .pm = &rockchip_thermal_pm_ops, |
1333 | .of_match_table = of_rockchip_thermal_match, | |
1334 | }, | |
1335 | .probe = rockchip_thermal_probe, | |
1336 | .remove = rockchip_thermal_remove, | |
1337 | }; | |
1338 | ||
1339 | module_platform_driver(rockchip_thermal_driver); | |
1340 | ||
1341 | MODULE_DESCRIPTION("ROCKCHIP THERMAL Driver"); | |
1342 | MODULE_AUTHOR("Rockchip, Inc."); | |
1343 | MODULE_LICENSE("GPL v2"); | |
1344 | MODULE_ALIAS("platform:rockchip-thermal"); |