1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2015 MediaTek Inc.
4 * Author: Hanyi Wu <hanyi.wu@mediatek.com>
5 * Sascha Hauer <s.hauer@pengutronix.de>
6 * Dawei Chien <dawei.chien@mediatek.com>
7 * Louis Yu <louis.yu@mediatek.com>
8 */
9
10 #include <linux/clk.h>
11 #include <linux/delay.h>
12 #include <linux/interrupt.h>
13 #include <linux/kernel.h>
14 #include <linux/module.h>
15 #include <linux/nvmem-consumer.h>
16 #include <linux/of.h>
17 #include <linux/of_address.h>
18 #include <linux/platform_device.h>
19 #include <linux/slab.h>
20 #include <linux/io.h>
21 #include <linux/thermal.h>
22 #include <linux/reset.h>
23 #include <linux/types.h>
24
25 #include "../thermal_hwmon.h"
26
27 /* AUXADC Registers */
28 #define AUXADC_CON1_SET_V 0x008
29 #define AUXADC_CON1_CLR_V 0x00c
30 #define AUXADC_CON2_V 0x010
31 #define AUXADC_DATA(channel) (0x14 + (channel) * 4)
32
33 #define APMIXED_SYS_TS_CON0 0x600
34 #define APMIXED_SYS_TS_CON1 0x604
35
36 /* Thermal Controller Registers */
37 #define TEMP_MONCTL0 0x000
38 #define TEMP_MONCTL1 0x004
39 #define TEMP_MONCTL2 0x008
40 #define TEMP_MONIDET0 0x014
41 #define TEMP_MONIDET1 0x018
42 #define TEMP_MSRCTL0 0x038
43 #define TEMP_MSRCTL1 0x03c
44 #define TEMP_AHBPOLL 0x040
45 #define TEMP_AHBTO 0x044
46 #define TEMP_ADCPNP0 0x048
47 #define TEMP_ADCPNP1 0x04c
48 #define TEMP_ADCPNP2 0x050
49 #define TEMP_ADCPNP3 0x0b4
50
51 #define TEMP_ADCMUX 0x054
52 #define TEMP_ADCEN 0x060
53 #define TEMP_PNPMUXADDR 0x064
54 #define TEMP_ADCMUXADDR 0x068
55 #define TEMP_ADCENADDR 0x074
56 #define TEMP_ADCVALIDADDR 0x078
57 #define TEMP_ADCVOLTADDR 0x07c
58 #define TEMP_RDCTRL 0x080
59 #define TEMP_ADCVALIDMASK 0x084
60 #define TEMP_ADCVOLTAGESHIFT 0x088
61 #define TEMP_ADCWRITECTRL 0x08c
62 #define TEMP_MSR0 0x090
63 #define TEMP_MSR1 0x094
64 #define TEMP_MSR2 0x098
65 #define TEMP_MSR3 0x0B8
66
67 #define TEMP_SPARE0 0x0f0
68
69 #define TEMP_ADCPNP0_1 0x148
70 #define TEMP_ADCPNP1_1 0x14c
71 #define TEMP_ADCPNP2_1 0x150
72 #define TEMP_MSR0_1 0x190
73 #define TEMP_MSR1_1 0x194
74 #define TEMP_MSR2_1 0x198
75 #define TEMP_ADCPNP3_1 0x1b4
76 #define TEMP_MSR3_1 0x1B8
77
78 #define PTPCORESEL 0x400
79
80 #define TEMP_MONCTL1_PERIOD_UNIT(x) ((x) & 0x3ff)
81
82 #define TEMP_MONCTL2_FILTER_INTERVAL(x) (((x) & 0x3ff) << 16)
83 #define TEMP_MONCTL2_SENSOR_INTERVAL(x) ((x) & 0x3ff)
84
85 #define TEMP_AHBPOLL_ADC_POLL_INTERVAL(x) (x)
86
87 #define TEMP_ADCWRITECTRL_ADC_PNP_WRITE BIT(0)
88 #define TEMP_ADCWRITECTRL_ADC_MUX_WRITE BIT(1)
89
90 #define TEMP_ADCVALIDMASK_VALID_HIGH BIT(5)
91 #define TEMP_ADCVALIDMASK_VALID_POS(bit) (bit)
92
93 /* MT8173 thermal sensors */
94 #define MT8173_TS1 0
95 #define MT8173_TS2 1
96 #define MT8173_TS3 2
97 #define MT8173_TS4 3
98 #define MT8173_TSABB 4
99
100 /* AUXADC channel 11 is used for the temperature sensors */
101 #define MT8173_TEMP_AUXADC_CHANNEL 11
102
103 /* The total number of temperature sensors in the MT8173 */
104 #define MT8173_NUM_SENSORS 5
105
106 /* The number of banks in the MT8173 */
107 #define MT8173_NUM_ZONES 4
108
109 /* The number of sensing points per bank */
110 #define MT8173_NUM_SENSORS_PER_ZONE 4
111
112 /* The number of controller in the MT8173 */
113 #define MT8173_NUM_CONTROLLER 1
114
115 /* The calibration coefficient of sensor */
116 #define MT8173_CALIBRATION 165
117
118 /* Valid temperatures range */
119 #define MT8173_TEMP_MIN -20000
120 #define MT8173_TEMP_MAX 150000
121
122 /*
123 * Layout of the fuses providing the calibration data
124 * These macros could be used for MT8183, MT8173, MT2701, and MT2712.
125 * MT8183 has 6 sensors and needs 6 VTS calibration data.
126 * MT8173 has 5 sensors and needs 5 VTS calibration data.
127 * MT2701 has 3 sensors and needs 3 VTS calibration data.
128 * MT2712 has 4 sensors and needs 4 VTS calibration data.
129 */
130 #define CALIB_BUF0_VALID_V1 BIT(0)
131 #define CALIB_BUF1_ADC_GE_V1(x) (((x) >> 22) & 0x3ff)
132 #define CALIB_BUF0_VTS_TS1_V1(x) (((x) >> 17) & 0x1ff)
133 #define CALIB_BUF0_VTS_TS2_V1(x) (((x) >> 8) & 0x1ff)
134 #define CALIB_BUF1_VTS_TS3_V1(x) (((x) >> 0) & 0x1ff)
135 #define CALIB_BUF2_VTS_TS4_V1(x) (((x) >> 23) & 0x1ff)
136 #define CALIB_BUF2_VTS_TS5_V1(x) (((x) >> 5) & 0x1ff)
137 #define CALIB_BUF2_VTS_TSABB_V1(x) (((x) >> 14) & 0x1ff)
138 #define CALIB_BUF0_DEGC_CALI_V1(x) (((x) >> 1) & 0x3f)
139 #define CALIB_BUF0_O_SLOPE_V1(x) (((x) >> 26) & 0x3f)
140 #define CALIB_BUF0_O_SLOPE_SIGN_V1(x) (((x) >> 7) & 0x1)
141 #define CALIB_BUF1_ID_V1(x) (((x) >> 9) & 0x1)
142
143 /*
144 * Layout of the fuses providing the calibration data
145 * These macros could be used for MT7622.
146 */
147 #define CALIB_BUF0_ADC_OE_V2(x) (((x) >> 22) & 0x3ff)
148 #define CALIB_BUF0_ADC_GE_V2(x) (((x) >> 12) & 0x3ff)
149 #define CALIB_BUF0_DEGC_CALI_V2(x) (((x) >> 6) & 0x3f)
150 #define CALIB_BUF0_O_SLOPE_V2(x) (((x) >> 0) & 0x3f)
151 #define CALIB_BUF1_VTS_TS1_V2(x) (((x) >> 23) & 0x1ff)
152 #define CALIB_BUF1_VTS_TS2_V2(x) (((x) >> 14) & 0x1ff)
153 #define CALIB_BUF1_VTS_TSABB_V2(x) (((x) >> 5) & 0x1ff)
154 #define CALIB_BUF1_VALID_V2(x) (((x) >> 4) & 0x1)
155 #define CALIB_BUF1_O_SLOPE_SIGN_V2(x) (((x) >> 3) & 0x1)
156
157 /*
158 * Layout of the fuses providing the calibration data
159 * These macros can be used for MT7981 and MT7986.
160 */
161 #define CALIB_BUF0_ADC_GE_V3(x) (((x) >> 0) & 0x3ff)
162 #define CALIB_BUF0_DEGC_CALI_V3(x) (((x) >> 20) & 0x3f)
163 #define CALIB_BUF0_O_SLOPE_V3(x) (((x) >> 26) & 0x3f)
164 #define CALIB_BUF1_VTS_TS1_V3(x) (((x) >> 0) & 0x1ff)
165 #define CALIB_BUF1_VTS_TS2_V3(x) (((x) >> 21) & 0x1ff)
166 #define CALIB_BUF1_VTS_TSABB_V3(x) (((x) >> 9) & 0x1ff)
167 #define CALIB_BUF1_VALID_V3(x) (((x) >> 18) & 0x1)
168 #define CALIB_BUF1_O_SLOPE_SIGN_V3(x) (((x) >> 19) & 0x1)
169 #define CALIB_BUF1_ID_V3(x) (((x) >> 20) & 0x1)
170
171 enum {
172 VTS1,
173 VTS2,
174 VTS3,
175 VTS4,
176 VTS5,
177 VTSABB,
178 MAX_NUM_VTS,
179 };
180
181 enum mtk_thermal_version {
182 MTK_THERMAL_V1 = 1,
183 MTK_THERMAL_V2,
184 MTK_THERMAL_V3,
185 };
186
187 /* MT2701 thermal sensors */
188 #define MT2701_TS1 0
189 #define MT2701_TS2 1
190 #define MT2701_TSABB 2
191
192 /* AUXADC channel 11 is used for the temperature sensors */
193 #define MT2701_TEMP_AUXADC_CHANNEL 11
194
195 /* The total number of temperature sensors in the MT2701 */
196 #define MT2701_NUM_SENSORS 3
197
198 /* The number of sensing points per bank */
199 #define MT2701_NUM_SENSORS_PER_ZONE 3
200
201 /* The number of controller in the MT2701 */
202 #define MT2701_NUM_CONTROLLER 1
203
204 /* The calibration coefficient of sensor */
205 #define MT2701_CALIBRATION 165
206
207 /* MT2712 thermal sensors */
208 #define MT2712_TS1 0
209 #define MT2712_TS2 1
210 #define MT2712_TS3 2
211 #define MT2712_TS4 3
212
213 /* AUXADC channel 11 is used for the temperature sensors */
214 #define MT2712_TEMP_AUXADC_CHANNEL 11
215
216 /* The total number of temperature sensors in the MT2712 */
217 #define MT2712_NUM_SENSORS 4
218
219 /* The number of sensing points per bank */
220 #define MT2712_NUM_SENSORS_PER_ZONE 4
221
222 /* The number of controller in the MT2712 */
223 #define MT2712_NUM_CONTROLLER 1
224
225 /* The calibration coefficient of sensor */
226 #define MT2712_CALIBRATION 165
227
228 #define MT7622_TEMP_AUXADC_CHANNEL 11
229 #define MT7622_NUM_SENSORS 1
230 #define MT7622_NUM_ZONES 1
231 #define MT7622_NUM_SENSORS_PER_ZONE 1
232 #define MT7622_TS1 0
233 #define MT7622_NUM_CONTROLLER 1
234
235 /* The maximum number of banks */
236 #define MAX_NUM_ZONES 8
237
238 /* The calibration coefficient of sensor */
239 #define MT7622_CALIBRATION 165
240
241 /* MT8183 thermal sensors */
242 #define MT8183_TS1 0
243 #define MT8183_TS2 1
244 #define MT8183_TS3 2
245 #define MT8183_TS4 3
246 #define MT8183_TS5 4
247 #define MT8183_TSABB 5
248
249 /* AUXADC channel is used for the temperature sensors */
250 #define MT8183_TEMP_AUXADC_CHANNEL 11
251
252 /* The total number of temperature sensors in the MT8183 */
253 #define MT8183_NUM_SENSORS 6
254
255 /* The number of banks in the MT8183 */
256 #define MT8183_NUM_ZONES 1
257
258 /* The number of sensing points per bank */
259 #define MT8183_NUM_SENSORS_PER_ZONE 6
260
261 /* The number of controller in the MT8183 */
262 #define MT8183_NUM_CONTROLLER 2
263
264 /* The calibration coefficient of sensor */
265 #define MT8183_CALIBRATION 153
266
267 /* AUXADC channel 11 is used for the temperature sensors */
268 #define MT7986_TEMP_AUXADC_CHANNEL 11
269
270 /* The total number of temperature sensors in the MT7986 */
271 #define MT7986_NUM_SENSORS 1
272
273 /* The number of banks in the MT7986 */
274 #define MT7986_NUM_ZONES 1
275
276 /* The number of sensing points per bank */
277 #define MT7986_NUM_SENSORS_PER_ZONE 1
278
279 /* MT7986 thermal sensors */
280 #define MT7986_TS1 0
281
282 /* The number of controller in the MT7986 */
283 #define MT7986_NUM_CONTROLLER 1
284
285 /* The calibration coefficient of sensor */
286 #define MT7986_CALIBRATION 165
287
288 /* MT8365 */
289 #define MT8365_TEMP_AUXADC_CHANNEL 11
290 #define MT8365_CALIBRATION 164
291 #define MT8365_NUM_CONTROLLER 1
292 #define MT8365_NUM_BANKS 1
293 #define MT8365_NUM_SENSORS 3
294 #define MT8365_NUM_SENSORS_PER_ZONE 3
295 #define MT8365_TS1 0
296 #define MT8365_TS2 1
297 #define MT8365_TS3 2
298
299 struct mtk_thermal;
300
301 struct thermal_bank_cfg {
302 unsigned int num_sensors;
303 const int *sensors;
304 };
305
306 struct mtk_thermal_bank {
307 struct mtk_thermal *mt;
308 int id;
309 };
310
311 struct mtk_thermal_data {
312 s32 num_banks;
313 s32 num_sensors;
314 s32 auxadc_channel;
315 const int *vts_index;
316 const int *sensor_mux_values;
317 const int *msr;
318 const int *adcpnp;
319 const int cali_val;
320 const int num_controller;
321 const int *controller_offset;
322 bool need_switch_bank;
323 struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
324 enum mtk_thermal_version version;
325 u32 apmixed_buffer_ctl_reg;
326 u32 apmixed_buffer_ctl_mask;
327 u32 apmixed_buffer_ctl_set;
328 };
329
330 struct mtk_thermal {
331 struct device *dev;
332 void __iomem *thermal_base;
333
334 struct clk *clk_peri_therm;
335 struct clk *clk_auxadc;
336 /* lock: for getting and putting banks */
337 struct mutex lock;
338
339 /* Calibration values */
340 s32 adc_ge;
341 s32 adc_oe;
342 s32 degc_cali;
343 s32 o_slope;
344 s32 o_slope_sign;
345 s32 vts[MAX_NUM_VTS];
346
347 const struct mtk_thermal_data *conf;
348 struct mtk_thermal_bank banks[MAX_NUM_ZONES];
349
350 int (*raw_to_mcelsius)(struct mtk_thermal *mt, int sensno, s32 raw);
351 };
352
353 /* MT8183 thermal sensor data */
354 static const int mt8183_bank_data[MT8183_NUM_SENSORS] = {
355 MT8183_TS1, MT8183_TS2, MT8183_TS3, MT8183_TS4, MT8183_TS5, MT8183_TSABB
356 };
357
358 static const int mt8183_msr[MT8183_NUM_SENSORS_PER_ZONE] = {
359 TEMP_MSR0_1, TEMP_MSR1_1, TEMP_MSR2_1, TEMP_MSR1, TEMP_MSR0, TEMP_MSR3_1
360 };
361
362 static const int mt8183_adcpnp[MT8183_NUM_SENSORS_PER_ZONE] = {
363 TEMP_ADCPNP0_1, TEMP_ADCPNP1_1, TEMP_ADCPNP2_1,
364 TEMP_ADCPNP1, TEMP_ADCPNP0, TEMP_ADCPNP3_1
365 };
366
367 static const int mt8183_mux_values[MT8183_NUM_SENSORS] = { 0, 1, 2, 3, 4, 0 };
368 static const int mt8183_tc_offset[MT8183_NUM_CONTROLLER] = {0x0, 0x100};
369
370 static const int mt8183_vts_index[MT8183_NUM_SENSORS] = {
371 VTS1, VTS2, VTS3, VTS4, VTS5, VTSABB
372 };
373
374 /* MT8173 thermal sensor data */
375 static const int mt8173_bank_data[MT8173_NUM_ZONES][3] = {
376 { MT8173_TS2, MT8173_TS3 },
377 { MT8173_TS2, MT8173_TS4 },
378 { MT8173_TS1, MT8173_TS2, MT8173_TSABB },
379 { MT8173_TS2 },
380 };
381
382 static const int mt8173_msr[MT8173_NUM_SENSORS_PER_ZONE] = {
383 TEMP_MSR0, TEMP_MSR1, TEMP_MSR2, TEMP_MSR3
384 };
385
386 static const int mt8173_adcpnp[MT8173_NUM_SENSORS_PER_ZONE] = {
387 TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2, TEMP_ADCPNP3
388 };
389
390 static const int mt8173_mux_values[MT8173_NUM_SENSORS] = { 0, 1, 2, 3, 16 };
391 static const int mt8173_tc_offset[MT8173_NUM_CONTROLLER] = { 0x0, };
392
393 static const int mt8173_vts_index[MT8173_NUM_SENSORS] = {
394 VTS1, VTS2, VTS3, VTS4, VTSABB
395 };
396
397 /* MT2701 thermal sensor data */
398 static const int mt2701_bank_data[MT2701_NUM_SENSORS] = {
399 MT2701_TS1, MT2701_TS2, MT2701_TSABB
400 };
401
402 static const int mt2701_msr[MT2701_NUM_SENSORS_PER_ZONE] = {
403 TEMP_MSR0, TEMP_MSR1, TEMP_MSR2
404 };
405
406 static const int mt2701_adcpnp[MT2701_NUM_SENSORS_PER_ZONE] = {
407 TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2
408 };
409
410 static const int mt2701_mux_values[MT2701_NUM_SENSORS] = { 0, 1, 16 };
411 static const int mt2701_tc_offset[MT2701_NUM_CONTROLLER] = { 0x0, };
412
413 static const int mt2701_vts_index[MT2701_NUM_SENSORS] = {
414 VTS1, VTS2, VTS3
415 };
416
417 /* MT2712 thermal sensor data */
418 static const int mt2712_bank_data[MT2712_NUM_SENSORS] = {
419 MT2712_TS1, MT2712_TS2, MT2712_TS3, MT2712_TS4
420 };
421
422 static const int mt2712_msr[MT2712_NUM_SENSORS_PER_ZONE] = {
423 TEMP_MSR0, TEMP_MSR1, TEMP_MSR2, TEMP_MSR3
424 };
425
426 static const int mt2712_adcpnp[MT2712_NUM_SENSORS_PER_ZONE] = {
427 TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2, TEMP_ADCPNP3
428 };
429
430 static const int mt2712_mux_values[MT2712_NUM_SENSORS] = { 0, 1, 2, 3 };
431 static const int mt2712_tc_offset[MT2712_NUM_CONTROLLER] = { 0x0, };
432
433 static const int mt2712_vts_index[MT2712_NUM_SENSORS] = {
434 VTS1, VTS2, VTS3, VTS4
435 };
436
437 /* MT7622 thermal sensor data */
438 static const int mt7622_bank_data[MT7622_NUM_SENSORS] = { MT7622_TS1, };
439 static const int mt7622_msr[MT7622_NUM_SENSORS_PER_ZONE] = { TEMP_MSR0, };
440 static const int mt7622_adcpnp[MT7622_NUM_SENSORS_PER_ZONE] = { TEMP_ADCPNP0, };
441 static const int mt7622_mux_values[MT7622_NUM_SENSORS] = { 0, };
442 static const int mt7622_vts_index[MT7622_NUM_SENSORS] = { VTS1 };
443 static const int mt7622_tc_offset[MT7622_NUM_CONTROLLER] = { 0x0, };
444
445 /* MT7986 thermal sensor data */
446 static const int mt7986_bank_data[MT7986_NUM_SENSORS] = { MT7986_TS1, };
447 static const int mt7986_msr[MT7986_NUM_SENSORS_PER_ZONE] = { TEMP_MSR0, };
448 static const int mt7986_adcpnp[MT7986_NUM_SENSORS_PER_ZONE] = { TEMP_ADCPNP0, };
449 static const int mt7986_mux_values[MT7986_NUM_SENSORS] = { 0, };
450 static const int mt7986_vts_index[MT7986_NUM_SENSORS] = { VTS1 };
451 static const int mt7986_tc_offset[MT7986_NUM_CONTROLLER] = { 0x0, };
452
453 /* MT8365 thermal sensor data */
454 static const int mt8365_bank_data[MT8365_NUM_SENSORS] = {
455 MT8365_TS1, MT8365_TS2, MT8365_TS3
456 };
457
458 static const int mt8365_msr[MT8365_NUM_SENSORS_PER_ZONE] = {
459 TEMP_MSR0, TEMP_MSR1, TEMP_MSR2
460 };
461
462 static const int mt8365_adcpnp[MT8365_NUM_SENSORS_PER_ZONE] = {
463 TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2
464 };
465
466 static const int mt8365_mux_values[MT8365_NUM_SENSORS] = { 0, 1, 2 };
467 static const int mt8365_tc_offset[MT8365_NUM_CONTROLLER] = { 0 };
468
469 static const int mt8365_vts_index[MT8365_NUM_SENSORS] = { VTS1, VTS2, VTS3 };
470
471 /*
472 * The MT8173 thermal controller has four banks. Each bank can read up to
473 * four temperature sensors simultaneously. The MT8173 has a total of 5
474 * temperature sensors. We use each bank to measure a certain area of the
475 * SoC. Since TS2 is located centrally in the SoC it is influenced by multiple
476 * areas, hence is used in different banks.
477 *
478 * The thermal core only gets the maximum temperature of all banks, so
479 * the bank concept wouldn't be necessary here. However, the SVS (Smart
480 * Voltage Scaling) unit makes its decisions based on the same bank
481 * data, and this indeed needs the temperatures of the individual banks
482 * for making better decisions.
483 */
484 static const struct mtk_thermal_data mt8173_thermal_data = {
485 .auxadc_channel = MT8173_TEMP_AUXADC_CHANNEL,
486 .num_banks = MT8173_NUM_ZONES,
487 .num_sensors = MT8173_NUM_SENSORS,
488 .vts_index = mt8173_vts_index,
489 .cali_val = MT8173_CALIBRATION,
490 .num_controller = MT8173_NUM_CONTROLLER,
491 .controller_offset = mt8173_tc_offset,
492 .need_switch_bank = true,
493 .bank_data = {
494 {
495 .num_sensors = 2,
496 .sensors = mt8173_bank_data[0],
497 }, {
498 .num_sensors = 2,
499 .sensors = mt8173_bank_data[1],
500 }, {
501 .num_sensors = 3,
502 .sensors = mt8173_bank_data[2],
503 }, {
504 .num_sensors = 1,
505 .sensors = mt8173_bank_data[3],
506 },
507 },
508 .msr = mt8173_msr,
509 .adcpnp = mt8173_adcpnp,
510 .sensor_mux_values = mt8173_mux_values,
511 .version = MTK_THERMAL_V1,
512 };
513
514 /*
515 * The MT2701 thermal controller has one bank, which can read up to
516 * three temperature sensors simultaneously. The MT2701 has a total of 3
517 * temperature sensors.
518 *
519 * The thermal core only gets the maximum temperature of this one bank,
520 * so the bank concept wouldn't be necessary here. However, the SVS (Smart
521 * Voltage Scaling) unit makes its decisions based on the same bank
522 * data.
523 */
524 static const struct mtk_thermal_data mt2701_thermal_data = {
525 .auxadc_channel = MT2701_TEMP_AUXADC_CHANNEL,
526 .num_banks = 1,
527 .num_sensors = MT2701_NUM_SENSORS,
528 .vts_index = mt2701_vts_index,
529 .cali_val = MT2701_CALIBRATION,
530 .num_controller = MT2701_NUM_CONTROLLER,
531 .controller_offset = mt2701_tc_offset,
532 .need_switch_bank = true,
533 .bank_data = {
534 {
535 .num_sensors = 3,
536 .sensors = mt2701_bank_data,
537 },
538 },
539 .msr = mt2701_msr,
540 .adcpnp = mt2701_adcpnp,
541 .sensor_mux_values = mt2701_mux_values,
542 .version = MTK_THERMAL_V1,
543 };
544
545 /*
546 * The MT8365 thermal controller has one bank, which can read up to
547 * four temperature sensors simultaneously. The MT8365 has a total of 3
548 * temperature sensors.
549 *
550 * The thermal core only gets the maximum temperature of this one bank,
551 * so the bank concept wouldn't be necessary here. However, the SVS (Smart
552 * Voltage Scaling) unit makes its decisions based on the same bank
553 * data.
554 */
555 static const struct mtk_thermal_data mt8365_thermal_data = {
556 .auxadc_channel = MT8365_TEMP_AUXADC_CHANNEL,
557 .num_banks = MT8365_NUM_BANKS,
558 .num_sensors = MT8365_NUM_SENSORS,
559 .vts_index = mt8365_vts_index,
560 .cali_val = MT8365_CALIBRATION,
561 .num_controller = MT8365_NUM_CONTROLLER,
562 .controller_offset = mt8365_tc_offset,
563 .need_switch_bank = false,
564 .bank_data = {
565 {
566 .num_sensors = MT8365_NUM_SENSORS,
567 .sensors = mt8365_bank_data
568 },
569 },
570 .msr = mt8365_msr,
571 .adcpnp = mt8365_adcpnp,
572 .sensor_mux_values = mt8365_mux_values,
573 .version = MTK_THERMAL_V1,
574 .apmixed_buffer_ctl_reg = APMIXED_SYS_TS_CON0,
575 .apmixed_buffer_ctl_mask = (u32) ~GENMASK(29, 28),
576 .apmixed_buffer_ctl_set = 0,
577 };
578
579 /*
580 * The MT2712 thermal controller has one bank, which can read up to
581 * four temperature sensors simultaneously. The MT2712 has a total of 4
582 * temperature sensors.
583 *
584 * The thermal core only gets the maximum temperature of this one bank,
585 * so the bank concept wouldn't be necessary here. However, the SVS (Smart
586 * Voltage Scaling) unit makes its decisions based on the same bank
587 * data.
588 */
589 static const struct mtk_thermal_data mt2712_thermal_data = {
590 .auxadc_channel = MT2712_TEMP_AUXADC_CHANNEL,
591 .num_banks = 1,
592 .num_sensors = MT2712_NUM_SENSORS,
593 .vts_index = mt2712_vts_index,
594 .cali_val = MT2712_CALIBRATION,
595 .num_controller = MT2712_NUM_CONTROLLER,
596 .controller_offset = mt2712_tc_offset,
597 .need_switch_bank = true,
598 .bank_data = {
599 {
600 .num_sensors = 4,
601 .sensors = mt2712_bank_data,
602 },
603 },
604 .msr = mt2712_msr,
605 .adcpnp = mt2712_adcpnp,
606 .sensor_mux_values = mt2712_mux_values,
607 .version = MTK_THERMAL_V1,
608 };
609
610 /*
611 * MT7622 have only one sensing point which uses AUXADC Channel 11 for raw data
612 * access.
613 */
614 static const struct mtk_thermal_data mt7622_thermal_data = {
615 .auxadc_channel = MT7622_TEMP_AUXADC_CHANNEL,
616 .num_banks = MT7622_NUM_ZONES,
617 .num_sensors = MT7622_NUM_SENSORS,
618 .vts_index = mt7622_vts_index,
619 .cali_val = MT7622_CALIBRATION,
620 .num_controller = MT7622_NUM_CONTROLLER,
621 .controller_offset = mt7622_tc_offset,
622 .need_switch_bank = true,
623 .bank_data = {
624 {
625 .num_sensors = 1,
626 .sensors = mt7622_bank_data,
627 },
628 },
629 .msr = mt7622_msr,
630 .adcpnp = mt7622_adcpnp,
631 .sensor_mux_values = mt7622_mux_values,
632 .version = MTK_THERMAL_V2,
633 .apmixed_buffer_ctl_reg = APMIXED_SYS_TS_CON1,
634 .apmixed_buffer_ctl_mask = GENMASK(31, 6) | BIT(3),
635 .apmixed_buffer_ctl_set = BIT(0),
636 };
637
638 /*
639 * The MT8183 thermal controller has one bank for the current SW framework.
640 * The MT8183 has a total of 6 temperature sensors.
641 * There are two thermal controller to control the six sensor.
642 * The first one bind 2 sensor, and the other bind 4 sensors.
643 * The thermal core only gets the maximum temperature of all sensor, so
644 * the bank concept wouldn't be necessary here. However, the SVS (Smart
645 * Voltage Scaling) unit makes its decisions based on the same bank
646 * data, and this indeed needs the temperatures of the individual banks
647 * for making better decisions.
648 */
649 static const struct mtk_thermal_data mt8183_thermal_data = {
650 .auxadc_channel = MT8183_TEMP_AUXADC_CHANNEL,
651 .num_banks = MT8183_NUM_ZONES,
652 .num_sensors = MT8183_NUM_SENSORS,
653 .vts_index = mt8183_vts_index,
654 .cali_val = MT8183_CALIBRATION,
655 .num_controller = MT8183_NUM_CONTROLLER,
656 .controller_offset = mt8183_tc_offset,
657 .need_switch_bank = false,
658 .bank_data = {
659 {
660 .num_sensors = 6,
661 .sensors = mt8183_bank_data,
662 },
663 },
664
665 .msr = mt8183_msr,
666 .adcpnp = mt8183_adcpnp,
667 .sensor_mux_values = mt8183_mux_values,
668 .version = MTK_THERMAL_V1,
669 };
670
671 /*
672 * MT7986 uses AUXADC Channel 11 for raw data access.
673 */
674 static const struct mtk_thermal_data mt7986_thermal_data = {
675 .auxadc_channel = MT7986_TEMP_AUXADC_CHANNEL,
676 .num_banks = MT7986_NUM_ZONES,
677 .num_sensors = MT7986_NUM_SENSORS,
678 .vts_index = mt7986_vts_index,
679 .cali_val = MT7986_CALIBRATION,
680 .num_controller = MT7986_NUM_CONTROLLER,
681 .controller_offset = mt7986_tc_offset,
682 .need_switch_bank = true,
683 .bank_data = {
684 {
685 .num_sensors = 1,
686 .sensors = mt7986_bank_data,
687 },
688 },
689 .msr = mt7986_msr,
690 .adcpnp = mt7986_adcpnp,
691 .sensor_mux_values = mt7986_mux_values,
692 .version = MTK_THERMAL_V3,
693 .apmixed_buffer_ctl_reg = APMIXED_SYS_TS_CON1,
694 .apmixed_buffer_ctl_mask = GENMASK(31, 6) | BIT(3),
695 .apmixed_buffer_ctl_set = BIT(0),
696 };
697
mtk_thermal_temp_is_valid(int temp)698 static bool mtk_thermal_temp_is_valid(int temp)
699 {
700 return (temp >= MT8173_TEMP_MIN) && (temp <= MT8173_TEMP_MAX);
701 }
702
703 /**
704 * raw_to_mcelsius_v1 - convert a raw ADC value to mcelsius
705 * @mt: The thermal controller
706 * @sensno: sensor number
707 * @raw: raw ADC value
708 *
709 * This converts the raw ADC value to mcelsius using the SoC specific
710 * calibration constants
711 */
raw_to_mcelsius_v1(struct mtk_thermal * mt,int sensno,s32 raw)712 static int raw_to_mcelsius_v1(struct mtk_thermal *mt, int sensno, s32 raw)
713 {
714 s32 tmp;
715
716 raw &= 0xfff;
717
718 tmp = 203450520 << 3;
719 tmp /= mt->conf->cali_val + mt->o_slope;
720 tmp /= 10000 + mt->adc_ge;
721 tmp *= raw - mt->vts[sensno] - 3350;
722 tmp >>= 3;
723
724 return mt->degc_cali * 500 - tmp;
725 }
726
raw_to_mcelsius_v2(struct mtk_thermal * mt,int sensno,s32 raw)727 static int raw_to_mcelsius_v2(struct mtk_thermal *mt, int sensno, s32 raw)
728 {
729 s32 format_1;
730 s32 format_2;
731 s32 g_oe;
732 s32 g_gain;
733 s32 g_x_roomt;
734 s32 tmp;
735
736 if (raw == 0)
737 return 0;
738
739 raw &= 0xfff;
740 g_gain = 10000 + (((mt->adc_ge - 512) * 10000) >> 12);
741 g_oe = mt->adc_oe - 512;
742 format_1 = mt->vts[VTS2] + 3105 - g_oe;
743 format_2 = (mt->degc_cali * 10) >> 1;
744 g_x_roomt = (((format_1 * 10000) >> 12) * 10000) / g_gain;
745
746 tmp = (((((raw - g_oe) * 10000) >> 12) * 10000) / g_gain) - g_x_roomt;
747 tmp = tmp * 10 * 100 / 11;
748
749 if (mt->o_slope_sign == 0)
750 tmp = tmp / (165 - mt->o_slope);
751 else
752 tmp = tmp / (165 + mt->o_slope);
753
754 return (format_2 - tmp) * 100;
755 }
756
raw_to_mcelsius_v3(struct mtk_thermal * mt,int sensno,s32 raw)757 static int raw_to_mcelsius_v3(struct mtk_thermal *mt, int sensno, s32 raw)
758 {
759 s32 tmp;
760
761 if (raw == 0)
762 return 0;
763
764 raw &= 0xfff;
765 tmp = 100000 * 15 / 16 * 10000;
766 tmp /= 4096 - 512 + mt->adc_ge;
767 tmp /= 1490;
768 tmp *= raw - mt->vts[sensno] - 2900;
769
770 return mt->degc_cali * 500 - tmp;
771 }
772
773 /**
774 * mtk_thermal_get_bank - get bank
775 * @bank: The bank
776 *
777 * The bank registers are banked, we have to select a bank in the
778 * PTPCORESEL register to access it.
779 */
mtk_thermal_get_bank(struct mtk_thermal_bank * bank)780 static void mtk_thermal_get_bank(struct mtk_thermal_bank *bank)
781 {
782 struct mtk_thermal *mt = bank->mt;
783 u32 val;
784
785 if (mt->conf->need_switch_bank) {
786 mutex_lock(&mt->lock);
787
788 val = readl(mt->thermal_base + PTPCORESEL);
789 val &= ~0xf;
790 val |= bank->id;
791 writel(val, mt->thermal_base + PTPCORESEL);
792 }
793 }
794
795 /**
796 * mtk_thermal_put_bank - release bank
797 * @bank: The bank
798 *
799 * release a bank previously taken with mtk_thermal_get_bank,
800 */
mtk_thermal_put_bank(struct mtk_thermal_bank * bank)801 static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank)
802 {
803 struct mtk_thermal *mt = bank->mt;
804
805 if (mt->conf->need_switch_bank)
806 mutex_unlock(&mt->lock);
807 }
808
809 /**
810 * mtk_thermal_bank_temperature - get the temperature of a bank
811 * @bank: The bank
812 *
813 * The temperature of a bank is considered the maximum temperature of
814 * the sensors associated to the bank.
815 */
mtk_thermal_bank_temperature(struct mtk_thermal_bank * bank)816 static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
817 {
818 struct mtk_thermal *mt = bank->mt;
819 const struct mtk_thermal_data *conf = mt->conf;
820 int i, temp = INT_MIN, max = INT_MIN;
821 u32 raw;
822
823 for (i = 0; i < conf->bank_data[bank->id].num_sensors; i++) {
824 raw = readl(mt->thermal_base + conf->msr[i]);
825
826 temp = mt->raw_to_mcelsius(
827 mt, conf->bank_data[bank->id].sensors[i], raw);
828
829 /*
830 * Depending on the filt/sen intervals and ADC polling time,
831 * we may need up to 60 milliseconds after initialization: this
832 * will result in the first reading containing an out of range
833 * temperature value.
834 * Validate the reading to both address the aforementioned issue
835 * and to eventually avoid bogus readings during runtime in the
836 * event that the AUXADC gets unstable due to high EMI, etc.
837 */
838 if (!mtk_thermal_temp_is_valid(temp))
839 temp = THERMAL_TEMP_INVALID;
840
841 if (temp > max)
842 max = temp;
843 }
844
845 return max;
846 }
847
mtk_read_temp(struct thermal_zone_device * tz,int * temperature)848 static int mtk_read_temp(struct thermal_zone_device *tz, int *temperature)
849 {
850 struct mtk_thermal *mt = thermal_zone_device_priv(tz);
851 int i;
852 int tempmax = INT_MIN;
853
854 for (i = 0; i < mt->conf->num_banks; i++) {
855 struct mtk_thermal_bank *bank = &mt->banks[i];
856
857 mtk_thermal_get_bank(bank);
858
859 tempmax = max(tempmax, mtk_thermal_bank_temperature(bank));
860
861 mtk_thermal_put_bank(bank);
862 }
863
864 *temperature = tempmax;
865
866 return 0;
867 }
868
869 static const struct thermal_zone_device_ops mtk_thermal_ops = {
870 .get_temp = mtk_read_temp,
871 };
872
mtk_thermal_init_bank(struct mtk_thermal * mt,int num,u32 apmixed_phys_base,u32 auxadc_phys_base,int ctrl_id)873 static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num,
874 u32 apmixed_phys_base, u32 auxadc_phys_base,
875 int ctrl_id)
876 {
877 struct mtk_thermal_bank *bank = &mt->banks[num];
878 const struct mtk_thermal_data *conf = mt->conf;
879 int i;
880
881 int offset = mt->conf->controller_offset[ctrl_id];
882 void __iomem *controller_base = mt->thermal_base + offset;
883
884 bank->id = num;
885 bank->mt = mt;
886
887 mtk_thermal_get_bank(bank);
888
889 /* bus clock 66M counting unit is 12 * 15.15ns * 256 = 46.540us */
890 writel(TEMP_MONCTL1_PERIOD_UNIT(12), controller_base + TEMP_MONCTL1);
891
892 /*
893 * filt interval is 1 * 46.540us = 46.54us,
894 * sen interval is 429 * 46.540us = 19.96ms
895 */
896 writel(TEMP_MONCTL2_FILTER_INTERVAL(1) |
897 TEMP_MONCTL2_SENSOR_INTERVAL(429),
898 controller_base + TEMP_MONCTL2);
899
900 /* poll is set to 10u */
901 writel(TEMP_AHBPOLL_ADC_POLL_INTERVAL(768),
902 controller_base + TEMP_AHBPOLL);
903
904 /* temperature sampling control, 1 sample */
905 writel(0x0, controller_base + TEMP_MSRCTL0);
906
907 /* exceed this polling time, IRQ would be inserted */
908 writel(0xffffffff, controller_base + TEMP_AHBTO);
909
910 /* number of interrupts per event, 1 is enough */
911 writel(0x0, controller_base + TEMP_MONIDET0);
912 writel(0x0, controller_base + TEMP_MONIDET1);
913
914 /*
915 * The MT8173 thermal controller does not have its own ADC. Instead it
916 * uses AHB bus accesses to control the AUXADC. To do this the thermal
917 * controller has to be programmed with the physical addresses of the
918 * AUXADC registers and with the various bit positions in the AUXADC.
919 * Also the thermal controller controls a mux in the APMIXEDSYS register
920 * space.
921 */
922
923 /*
924 * this value will be stored to TEMP_PNPMUXADDR (TEMP_SPARE0)
925 * automatically by hw
926 */
927 writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCMUX);
928
929 /* AHB address for auxadc mux selection */
930 writel(auxadc_phys_base + AUXADC_CON1_CLR_V,
931 controller_base + TEMP_ADCMUXADDR);
932
933 if (mt->conf->version == MTK_THERMAL_V1) {
934 /* AHB address for pnp sensor mux selection */
935 writel(apmixed_phys_base + APMIXED_SYS_TS_CON1,
936 controller_base + TEMP_PNPMUXADDR);
937 }
938
939 /* AHB value for auxadc enable */
940 writel(BIT(conf->auxadc_channel), controller_base + TEMP_ADCEN);
941
942 /* AHB address for auxadc enable (channel 0 immediate mode selected) */
943 writel(auxadc_phys_base + AUXADC_CON1_SET_V,
944 controller_base + TEMP_ADCENADDR);
945
946 /* AHB address for auxadc valid bit */
947 writel(auxadc_phys_base + AUXADC_DATA(conf->auxadc_channel),
948 controller_base + TEMP_ADCVALIDADDR);
949
950 /* AHB address for auxadc voltage output */
951 writel(auxadc_phys_base + AUXADC_DATA(conf->auxadc_channel),
952 controller_base + TEMP_ADCVOLTADDR);
953
954 /* read valid & voltage are at the same register */
955 writel(0x0, controller_base + TEMP_RDCTRL);
956
957 /* indicate where the valid bit is */
958 writel(TEMP_ADCVALIDMASK_VALID_HIGH | TEMP_ADCVALIDMASK_VALID_POS(12),
959 controller_base + TEMP_ADCVALIDMASK);
960
961 /* no shift */
962 writel(0x0, controller_base + TEMP_ADCVOLTAGESHIFT);
963
964 /* enable auxadc mux write transaction */
965 writel(TEMP_ADCWRITECTRL_ADC_MUX_WRITE,
966 controller_base + TEMP_ADCWRITECTRL);
967
968 for (i = 0; i < conf->bank_data[num].num_sensors; i++)
969 writel(conf->sensor_mux_values[conf->bank_data[num].sensors[i]],
970 mt->thermal_base + conf->adcpnp[i]);
971
972 writel((1 << conf->bank_data[num].num_sensors) - 1,
973 controller_base + TEMP_MONCTL0);
974
975 writel(TEMP_ADCWRITECTRL_ADC_PNP_WRITE |
976 TEMP_ADCWRITECTRL_ADC_MUX_WRITE,
977 controller_base + TEMP_ADCWRITECTRL);
978
979 mtk_thermal_put_bank(bank);
980 }
981
of_get_phys_base(struct device_node * np)982 static u64 of_get_phys_base(struct device_node *np)
983 {
984 struct resource res;
985
986 if (of_address_to_resource(np, 0, &res))
987 return OF_BAD_ADDR;
988
989 return res.start;
990 }
991
mtk_thermal_extract_efuse_v1(struct mtk_thermal * mt,u32 * buf)992 static int mtk_thermal_extract_efuse_v1(struct mtk_thermal *mt, u32 *buf)
993 {
994 int i;
995
996 if (!(buf[0] & CALIB_BUF0_VALID_V1))
997 return -EINVAL;
998
999 mt->adc_ge = CALIB_BUF1_ADC_GE_V1(buf[1]);
1000
1001 for (i = 0; i < mt->conf->num_sensors; i++) {
1002 switch (mt->conf->vts_index[i]) {
1003 case VTS1:
1004 mt->vts[VTS1] = CALIB_BUF0_VTS_TS1_V1(buf[0]);
1005 break;
1006 case VTS2:
1007 mt->vts[VTS2] = CALIB_BUF0_VTS_TS2_V1(buf[0]);
1008 break;
1009 case VTS3:
1010 mt->vts[VTS3] = CALIB_BUF1_VTS_TS3_V1(buf[1]);
1011 break;
1012 case VTS4:
1013 mt->vts[VTS4] = CALIB_BUF2_VTS_TS4_V1(buf[2]);
1014 break;
1015 case VTS5:
1016 mt->vts[VTS5] = CALIB_BUF2_VTS_TS5_V1(buf[2]);
1017 break;
1018 case VTSABB:
1019 mt->vts[VTSABB] =
1020 CALIB_BUF2_VTS_TSABB_V1(buf[2]);
1021 break;
1022 default:
1023 break;
1024 }
1025 }
1026
1027 mt->degc_cali = CALIB_BUF0_DEGC_CALI_V1(buf[0]);
1028 if (CALIB_BUF1_ID_V1(buf[1]) &
1029 CALIB_BUF0_O_SLOPE_SIGN_V1(buf[0]))
1030 mt->o_slope = -CALIB_BUF0_O_SLOPE_V1(buf[0]);
1031 else
1032 mt->o_slope = CALIB_BUF0_O_SLOPE_V1(buf[0]);
1033
1034 return 0;
1035 }
1036
mtk_thermal_extract_efuse_v2(struct mtk_thermal * mt,u32 * buf)1037 static int mtk_thermal_extract_efuse_v2(struct mtk_thermal *mt, u32 *buf)
1038 {
1039 if (!CALIB_BUF1_VALID_V2(buf[1]))
1040 return -EINVAL;
1041
1042 mt->adc_oe = CALIB_BUF0_ADC_OE_V2(buf[0]);
1043 mt->adc_ge = CALIB_BUF0_ADC_GE_V2(buf[0]);
1044 mt->degc_cali = CALIB_BUF0_DEGC_CALI_V2(buf[0]);
1045 mt->o_slope = CALIB_BUF0_O_SLOPE_V2(buf[0]);
1046 mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V2(buf[1]);
1047 mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V2(buf[1]);
1048 mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V2(buf[1]);
1049 mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V2(buf[1]);
1050
1051 return 0;
1052 }
1053
mtk_thermal_extract_efuse_v3(struct mtk_thermal * mt,u32 * buf)1054 static int mtk_thermal_extract_efuse_v3(struct mtk_thermal *mt, u32 *buf)
1055 {
1056 if (!CALIB_BUF1_VALID_V3(buf[1]))
1057 return -EINVAL;
1058
1059 mt->adc_ge = CALIB_BUF0_ADC_GE_V3(buf[0]);
1060 mt->degc_cali = CALIB_BUF0_DEGC_CALI_V3(buf[0]);
1061 mt->o_slope = CALIB_BUF0_O_SLOPE_V3(buf[0]);
1062 mt->vts[VTS1] = CALIB_BUF1_VTS_TS1_V3(buf[1]);
1063 mt->vts[VTS2] = CALIB_BUF1_VTS_TS2_V3(buf[1]);
1064 mt->vts[VTSABB] = CALIB_BUF1_VTS_TSABB_V3(buf[1]);
1065 mt->o_slope_sign = CALIB_BUF1_O_SLOPE_SIGN_V3(buf[1]);
1066
1067 if (CALIB_BUF1_ID_V3(buf[1]) == 0)
1068 mt->o_slope = 0;
1069
1070 return 0;
1071 }
1072
mtk_thermal_get_calibration_data(struct device * dev,struct mtk_thermal * mt)1073 static int mtk_thermal_get_calibration_data(struct device *dev,
1074 struct mtk_thermal *mt)
1075 {
1076 struct nvmem_cell *cell;
1077 u32 *buf;
1078 size_t len;
1079 int i, ret = 0;
1080
1081 /* Start with default values */
1082 mt->adc_ge = 512;
1083 mt->adc_oe = 512;
1084 for (i = 0; i < mt->conf->num_sensors; i++)
1085 mt->vts[i] = 260;
1086 mt->degc_cali = 40;
1087 mt->o_slope = 0;
1088
1089 cell = nvmem_cell_get(dev, "calibration-data");
1090 if (IS_ERR(cell)) {
1091 if (PTR_ERR(cell) == -EPROBE_DEFER)
1092 return PTR_ERR(cell);
1093 return 0;
1094 }
1095
1096 buf = (u32 *)nvmem_cell_read(cell, &len);
1097
1098 nvmem_cell_put(cell);
1099
1100 if (IS_ERR(buf))
1101 return PTR_ERR(buf);
1102
1103 if (len < 3 * sizeof(u32)) {
1104 dev_warn(dev, "invalid calibration data\n");
1105 ret = -EINVAL;
1106 goto out;
1107 }
1108
1109 switch (mt->conf->version) {
1110 case MTK_THERMAL_V1:
1111 ret = mtk_thermal_extract_efuse_v1(mt, buf);
1112 break;
1113 case MTK_THERMAL_V2:
1114 ret = mtk_thermal_extract_efuse_v2(mt, buf);
1115 break;
1116 case MTK_THERMAL_V3:
1117 ret = mtk_thermal_extract_efuse_v3(mt, buf);
1118 break;
1119 default:
1120 ret = -EINVAL;
1121 break;
1122 }
1123
1124 if (ret) {
1125 dev_info(dev, "Device not calibrated, using default calibration values\n");
1126 ret = 0;
1127 }
1128
1129 out:
1130 kfree(buf);
1131
1132 return ret;
1133 }
1134
1135 static const struct of_device_id mtk_thermal_of_match[] = {
1136 {
1137 .compatible = "mediatek,mt8173-thermal",
1138 .data = (void *)&mt8173_thermal_data,
1139 },
1140 {
1141 .compatible = "mediatek,mt2701-thermal",
1142 .data = (void *)&mt2701_thermal_data,
1143 },
1144 {
1145 .compatible = "mediatek,mt2712-thermal",
1146 .data = (void *)&mt2712_thermal_data,
1147 },
1148 {
1149 .compatible = "mediatek,mt7622-thermal",
1150 .data = (void *)&mt7622_thermal_data,
1151 },
1152 {
1153 .compatible = "mediatek,mt7986-thermal",
1154 .data = (void *)&mt7986_thermal_data,
1155 },
1156 {
1157 .compatible = "mediatek,mt8183-thermal",
1158 .data = (void *)&mt8183_thermal_data,
1159 },
1160 {
1161 .compatible = "mediatek,mt8365-thermal",
1162 .data = (void *)&mt8365_thermal_data,
1163 }, {
1164 },
1165 };
1166 MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
1167
mtk_thermal_turn_on_buffer(struct mtk_thermal * mt,void __iomem * apmixed_base)1168 static void mtk_thermal_turn_on_buffer(struct mtk_thermal *mt,
1169 void __iomem *apmixed_base)
1170 {
1171 u32 tmp;
1172
1173 if (!mt->conf->apmixed_buffer_ctl_reg)
1174 return;
1175
1176 tmp = readl(apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
1177 tmp &= mt->conf->apmixed_buffer_ctl_mask;
1178 tmp |= mt->conf->apmixed_buffer_ctl_set;
1179 writel(tmp, apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
1180 udelay(200);
1181 }
1182
mtk_thermal_release_periodic_ts(struct mtk_thermal * mt,void __iomem * auxadc_base)1183 static void mtk_thermal_release_periodic_ts(struct mtk_thermal *mt,
1184 void __iomem *auxadc_base)
1185 {
1186 int tmp;
1187
1188 writel(0x800, auxadc_base + AUXADC_CON1_SET_V);
1189 writel(0x1, mt->thermal_base + TEMP_MONCTL0);
1190 tmp = readl(mt->thermal_base + TEMP_MSRCTL1);
1191 writel((tmp & (~0x10e)), mt->thermal_base + TEMP_MSRCTL1);
1192 }
1193
mtk_thermal_probe(struct platform_device * pdev)1194 static int mtk_thermal_probe(struct platform_device *pdev)
1195 {
1196 int ret, i, ctrl_id;
1197 struct device_node *auxadc, *apmixedsys, *np = pdev->dev.of_node;
1198 struct mtk_thermal *mt;
1199 u64 auxadc_phys_base, apmixed_phys_base;
1200 struct thermal_zone_device *tzdev;
1201 void __iomem *apmixed_base, *auxadc_base;
1202
1203 mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);
1204 if (!mt)
1205 return -ENOMEM;
1206
1207 mt->conf = of_device_get_match_data(&pdev->dev);
1208
1209 mt->thermal_base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
1210 if (IS_ERR(mt->thermal_base))
1211 return PTR_ERR(mt->thermal_base);
1212
1213 ret = mtk_thermal_get_calibration_data(&pdev->dev, mt);
1214 if (ret)
1215 return ret;
1216
1217 mutex_init(&mt->lock);
1218
1219 mt->dev = &pdev->dev;
1220
1221 auxadc = of_parse_phandle(np, "mediatek,auxadc", 0);
1222 if (!auxadc) {
1223 dev_err(&pdev->dev, "missing auxadc node\n");
1224 return -ENODEV;
1225 }
1226
1227 auxadc_base = of_iomap(auxadc, 0);
1228 auxadc_phys_base = of_get_phys_base(auxadc);
1229
1230 of_node_put(auxadc);
1231
1232 if (auxadc_phys_base == OF_BAD_ADDR) {
1233 dev_err(&pdev->dev, "Can't get auxadc phys address\n");
1234 return -EINVAL;
1235 }
1236
1237 apmixedsys = of_parse_phandle(np, "mediatek,apmixedsys", 0);
1238 if (!apmixedsys) {
1239 dev_err(&pdev->dev, "missing apmixedsys node\n");
1240 return -ENODEV;
1241 }
1242
1243 apmixed_base = of_iomap(apmixedsys, 0);
1244 apmixed_phys_base = of_get_phys_base(apmixedsys);
1245
1246 of_node_put(apmixedsys);
1247
1248 if (apmixed_phys_base == OF_BAD_ADDR) {
1249 dev_err(&pdev->dev, "Can't get auxadc phys address\n");
1250 return -EINVAL;
1251 }
1252
1253 ret = device_reset_optional(&pdev->dev);
1254 if (ret)
1255 return ret;
1256
1257 mt->clk_auxadc = devm_clk_get_enabled(&pdev->dev, "auxadc");
1258 if (IS_ERR(mt->clk_auxadc)) {
1259 ret = PTR_ERR(mt->clk_auxadc);
1260 dev_err(&pdev->dev, "Can't enable auxadc clk: %d\n", ret);
1261 return ret;
1262 }
1263
1264 mt->clk_peri_therm = devm_clk_get_enabled(&pdev->dev, "therm");
1265 if (IS_ERR(mt->clk_peri_therm)) {
1266 ret = PTR_ERR(mt->clk_peri_therm);
1267 dev_err(&pdev->dev, "Can't enable peri clk: %d\n", ret);
1268 return ret;
1269 }
1270
1271 mtk_thermal_turn_on_buffer(mt, apmixed_base);
1272
1273 if (mt->conf->version != MTK_THERMAL_V1)
1274 mtk_thermal_release_periodic_ts(mt, auxadc_base);
1275
1276 if (mt->conf->version == MTK_THERMAL_V1)
1277 mt->raw_to_mcelsius = raw_to_mcelsius_v1;
1278 else if (mt->conf->version == MTK_THERMAL_V2)
1279 mt->raw_to_mcelsius = raw_to_mcelsius_v2;
1280 else
1281 mt->raw_to_mcelsius = raw_to_mcelsius_v3;
1282
1283 for (ctrl_id = 0; ctrl_id < mt->conf->num_controller ; ctrl_id++)
1284 for (i = 0; i < mt->conf->num_banks; i++)
1285 mtk_thermal_init_bank(mt, i, apmixed_phys_base,
1286 auxadc_phys_base, ctrl_id);
1287
1288 tzdev = devm_thermal_of_zone_register(&pdev->dev, 0, mt,
1289 &mtk_thermal_ops);
1290 if (IS_ERR(tzdev))
1291 return PTR_ERR(tzdev);
1292
1293 ret = devm_thermal_add_hwmon_sysfs(&pdev->dev, tzdev);
1294 if (ret)
1295 dev_warn(&pdev->dev, "error in thermal_add_hwmon_sysfs");
1296
1297 return 0;
1298 }
1299
1300 static struct platform_driver mtk_thermal_driver = {
1301 .probe = mtk_thermal_probe,
1302 .driver = {
1303 .name = "mtk-thermal",
1304 .of_match_table = mtk_thermal_of_match,
1305 },
1306 };
1307
1308 module_platform_driver(mtk_thermal_driver);
1309
1310 MODULE_AUTHOR("Michael Kao <michael.kao@mediatek.com>");
1311 MODULE_AUTHOR("Louis Yu <louis.yu@mediatek.com>");
1312 MODULE_AUTHOR("Dawei Chien <dawei.chien@mediatek.com>");
1313 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
1314 MODULE_AUTHOR("Hanyi Wu <hanyi.wu@mediatek.com>");
1315 MODULE_DESCRIPTION("Mediatek thermal driver");
1316 MODULE_LICENSE("GPL v2");
1317