Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd |
| 3 | * |
Caesar Wang | 20f0af7 | 2015-11-09 12:48:59 +0800 | [diff] [blame] | 4 | * Copyright (c) 2015, Fuzhou Rockchip Electronics Co., Ltd |
| 5 | * Caesar Wang <wxt@rock-chips.com> |
| 6 | * |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms and conditions of the GNU General Public License, |
| 9 | * version 2, as published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 14 | * more details. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/clk.h> |
| 18 | #include <linux/delay.h> |
| 19 | #include <linux/interrupt.h> |
| 20 | #include <linux/io.h> |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/of.h> |
| 23 | #include <linux/of_address.h> |
| 24 | #include <linux/of_irq.h> |
| 25 | #include <linux/platform_device.h> |
| 26 | #include <linux/reset.h> |
| 27 | #include <linux/thermal.h> |
Caesar Wang | c970872 | 2015-11-11 19:43:11 -0800 | [diff] [blame] | 28 | #include <linux/pinctrl/consumer.h> |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 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 | /** |
Caesar Wang | 13c1cfd | 2015-12-03 16:48:39 +0800 | [diff] [blame] | 41 | * The system Temperature Sensors tshut(tshut) polarity |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 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 | /** |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 51 | * The system has two Temperature Sensors. |
| 52 | * sensor0 is for CPU, and sensor1 is for GPU. |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 53 | */ |
| 54 | enum sensor_id { |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 55 | SENSOR_CPU = 0, |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 56 | SENSOR_GPU, |
| 57 | }; |
| 58 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 59 | /** |
Caesar Wang | 13c1cfd | 2015-12-03 16:48:39 +0800 | [diff] [blame] | 60 | * The conversion table has the adc value and temperature. |
| 61 | * ADC_DECREMENT: the adc value is of diminishing.(e.g. v2_code_table) |
| 62 | * ADC_INCREMENT: the adc value is incremental.(e.g. v3_code_table) |
| 63 | */ |
Caesar Wang | 020ba95 | 2015-11-09 12:48:57 +0800 | [diff] [blame] | 64 | enum adc_sort_mode { |
| 65 | ADC_DECREMENT = 0, |
| 66 | ADC_INCREMENT, |
| 67 | }; |
| 68 | |
| 69 | /** |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 70 | * The max sensors is two in rockchip SoCs. |
| 71 | * Two sensors: CPU and GPU sensor. |
| 72 | */ |
| 73 | #define SOC_MAX_SENSORS 2 |
| 74 | |
Caesar Wang | 13c1cfd | 2015-12-03 16:48:39 +0800 | [diff] [blame] | 75 | /** |
| 76 | * struct chip_tsadc_table: hold information about chip-specific differences |
| 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 | */ |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 82 | struct chip_tsadc_table { |
| 83 | const struct tsadc_table *id; |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 84 | unsigned int length; |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 85 | u32 data_mask; |
Caesar Wang | 020ba95 | 2015-11-09 12:48:57 +0800 | [diff] [blame] | 86 | enum adc_sort_mode mode; |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 87 | }; |
| 88 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 89 | struct rockchip_tsadc_chip { |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 90 | /* The sensor id of chip correspond to the ADC channel */ |
| 91 | int chn_id[SOC_MAX_SENSORS]; |
| 92 | int chn_num; |
| 93 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 94 | /* The hardware-controlled tshut property */ |
Caesar Wang | 437df21 | 2015-11-09 12:48:58 +0800 | [diff] [blame] | 95 | int tshut_temp; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 96 | enum tshut_mode tshut_mode; |
| 97 | enum tshut_polarity tshut_polarity; |
| 98 | |
| 99 | /* Chip-wide methods */ |
| 100 | void (*initialize)(void __iomem *reg, enum tshut_polarity p); |
| 101 | void (*irq_ack)(void __iomem *reg); |
| 102 | void (*control)(void __iomem *reg, bool on); |
| 103 | |
| 104 | /* Per-sensor methods */ |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 105 | int (*get_temp)(struct chip_tsadc_table table, |
| 106 | int chn, void __iomem *reg, int *temp); |
| 107 | void (*set_tshut_temp)(struct chip_tsadc_table table, |
Caesar Wang | 437df21 | 2015-11-09 12:48:58 +0800 | [diff] [blame] | 108 | int chn, void __iomem *reg, int temp); |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 109 | void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m); |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 110 | |
| 111 | /* Per-table methods */ |
| 112 | struct chip_tsadc_table table; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 113 | }; |
| 114 | |
| 115 | struct rockchip_thermal_sensor { |
| 116 | struct rockchip_thermal_data *thermal; |
| 117 | struct thermal_zone_device *tzd; |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 118 | int id; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 119 | }; |
| 120 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 121 | struct rockchip_thermal_data { |
| 122 | const struct rockchip_tsadc_chip *chip; |
| 123 | struct platform_device *pdev; |
| 124 | struct reset_control *reset; |
| 125 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 126 | struct rockchip_thermal_sensor sensors[SOC_MAX_SENSORS]; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 127 | |
| 128 | struct clk *clk; |
| 129 | struct clk *pclk; |
| 130 | |
| 131 | void __iomem *regs; |
| 132 | |
Caesar Wang | 437df21 | 2015-11-09 12:48:58 +0800 | [diff] [blame] | 133 | int tshut_temp; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 134 | enum tshut_mode tshut_mode; |
| 135 | enum tshut_polarity tshut_polarity; |
| 136 | }; |
| 137 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 138 | /* TSADC Sensor info define: */ |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 139 | #define TSADCV2_AUTO_CON 0x04 |
| 140 | #define TSADCV2_INT_EN 0x08 |
| 141 | #define TSADCV2_INT_PD 0x0c |
| 142 | #define TSADCV2_DATA(chn) (0x20 + (chn) * 0x04) |
| 143 | #define TSADCV2_COMP_SHUT(chn) (0x40 + (chn) * 0x04) |
| 144 | #define TSADCV2_HIGHT_INT_DEBOUNCE 0x60 |
| 145 | #define TSADCV2_HIGHT_TSHUT_DEBOUNCE 0x64 |
| 146 | #define TSADCV2_AUTO_PERIOD 0x68 |
| 147 | #define TSADCV2_AUTO_PERIOD_HT 0x6c |
| 148 | |
| 149 | #define TSADCV2_AUTO_EN BIT(0) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 150 | #define TSADCV2_AUTO_SRC_EN(chn) BIT(4 + (chn)) |
| 151 | #define TSADCV2_AUTO_TSHUT_POLARITY_HIGH BIT(8) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 152 | |
| 153 | #define TSADCV2_INT_SRC_EN(chn) BIT(chn) |
| 154 | #define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn)) |
| 155 | #define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn)) |
| 156 | |
Caesar Wang | 7b02a5e | 2015-12-03 16:48:42 +0800 | [diff] [blame] | 157 | #define TSADCV1_INT_PD_CLEAR_MASK ~BIT(16) |
Dmitry Torokhov | 452e01b | 2015-08-07 14:00:52 -0700 | [diff] [blame] | 158 | #define TSADCV2_INT_PD_CLEAR_MASK ~BIT(8) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 159 | |
| 160 | #define TSADCV2_DATA_MASK 0xfff |
Caesar Wang | 20f0af7 | 2015-11-09 12:48:59 +0800 | [diff] [blame] | 161 | #define TSADCV3_DATA_MASK 0x3ff |
| 162 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 163 | #define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT 4 |
| 164 | #define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT 4 |
| 165 | #define TSADCV2_AUTO_PERIOD_TIME 250 /* msec */ |
| 166 | #define TSADCV2_AUTO_PERIOD_HT_TIME 50 /* msec */ |
| 167 | |
| 168 | struct tsadc_table { |
Dmitry Torokhov | d9a241c | 2015-08-07 13:59:23 -0700 | [diff] [blame] | 169 | u32 code; |
Caesar Wang | 437df21 | 2015-11-09 12:48:58 +0800 | [diff] [blame] | 170 | int temp; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 171 | }; |
| 172 | |
Caesar Wang | 7b02a5e | 2015-12-03 16:48:42 +0800 | [diff] [blame] | 173 | /** |
| 174 | * Note: |
| 175 | * Code to Temperature mapping of the Temperature sensor is a piece wise linear |
| 176 | * curve.Any temperature, code faling between to 2 give temperatures can be |
| 177 | * linearly interpolated. |
| 178 | * Code to Temperature mapping should be updated based on sillcon results. |
| 179 | */ |
| 180 | static const struct tsadc_table v1_code_table[] = { |
| 181 | {TSADCV3_DATA_MASK, -40000}, |
| 182 | {436, -40000}, |
| 183 | {431, -35000}, |
| 184 | {426, -30000}, |
| 185 | {421, -25000}, |
| 186 | {416, -20000}, |
| 187 | {411, -15000}, |
| 188 | {406, -10000}, |
| 189 | {401, -5000}, |
| 190 | {395, 0}, |
| 191 | {390, 5000}, |
| 192 | {385, 10000}, |
| 193 | {380, 15000}, |
| 194 | {375, 20000}, |
| 195 | {370, 25000}, |
| 196 | {364, 30000}, |
| 197 | {359, 35000}, |
| 198 | {354, 40000}, |
| 199 | {349, 45000}, |
| 200 | {343, 50000}, |
| 201 | {338, 55000}, |
| 202 | {333, 60000}, |
| 203 | {328, 65000}, |
| 204 | {322, 70000}, |
| 205 | {317, 75000}, |
| 206 | {312, 80000}, |
| 207 | {307, 85000}, |
| 208 | {301, 90000}, |
| 209 | {296, 95000}, |
| 210 | {291, 100000}, |
| 211 | {286, 105000}, |
| 212 | {280, 110000}, |
| 213 | {275, 115000}, |
| 214 | {270, 120000}, |
| 215 | {264, 125000}, |
| 216 | }; |
| 217 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 218 | static const struct tsadc_table v2_code_table[] = { |
| 219 | {TSADCV2_DATA_MASK, -40000}, |
| 220 | {3800, -40000}, |
| 221 | {3792, -35000}, |
| 222 | {3783, -30000}, |
| 223 | {3774, -25000}, |
| 224 | {3765, -20000}, |
| 225 | {3756, -15000}, |
| 226 | {3747, -10000}, |
| 227 | {3737, -5000}, |
| 228 | {3728, 0}, |
| 229 | {3718, 5000}, |
| 230 | {3708, 10000}, |
| 231 | {3698, 15000}, |
| 232 | {3688, 20000}, |
| 233 | {3678, 25000}, |
| 234 | {3667, 30000}, |
| 235 | {3656, 35000}, |
| 236 | {3645, 40000}, |
| 237 | {3634, 45000}, |
| 238 | {3623, 50000}, |
| 239 | {3611, 55000}, |
| 240 | {3600, 60000}, |
| 241 | {3588, 65000}, |
| 242 | {3575, 70000}, |
| 243 | {3563, 75000}, |
| 244 | {3550, 80000}, |
| 245 | {3537, 85000}, |
| 246 | {3524, 90000}, |
| 247 | {3510, 95000}, |
| 248 | {3496, 100000}, |
| 249 | {3482, 105000}, |
| 250 | {3467, 110000}, |
| 251 | {3452, 115000}, |
| 252 | {3437, 120000}, |
| 253 | {3421, 125000}, |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 254 | }; |
| 255 | |
Caesar Wang | 20f0af7 | 2015-11-09 12:48:59 +0800 | [diff] [blame] | 256 | static const struct tsadc_table v3_code_table[] = { |
| 257 | {0, -40000}, |
| 258 | {106, -40000}, |
| 259 | {108, -35000}, |
| 260 | {110, -30000}, |
| 261 | {112, -25000}, |
| 262 | {114, -20000}, |
| 263 | {116, -15000}, |
| 264 | {118, -10000}, |
| 265 | {120, -5000}, |
| 266 | {122, 0}, |
| 267 | {124, 5000}, |
| 268 | {126, 10000}, |
| 269 | {128, 15000}, |
| 270 | {130, 20000}, |
| 271 | {132, 25000}, |
| 272 | {134, 30000}, |
| 273 | {136, 35000}, |
| 274 | {138, 40000}, |
| 275 | {140, 45000}, |
| 276 | {142, 50000}, |
| 277 | {144, 55000}, |
| 278 | {146, 60000}, |
| 279 | {148, 65000}, |
| 280 | {150, 70000}, |
| 281 | {152, 75000}, |
| 282 | {154, 80000}, |
| 283 | {156, 85000}, |
| 284 | {158, 90000}, |
| 285 | {160, 95000}, |
| 286 | {162, 100000}, |
| 287 | {163, 105000}, |
| 288 | {165, 110000}, |
| 289 | {167, 115000}, |
| 290 | {169, 120000}, |
| 291 | {171, 125000}, |
| 292 | {TSADCV3_DATA_MASK, 125000}, |
| 293 | }; |
| 294 | |
Caesar Wang | b0d7033 | 2015-12-03 16:48:43 +0800 | [diff] [blame^] | 295 | static const struct tsadc_table v4_code_table[] = { |
| 296 | {TSADCV3_DATA_MASK, -40000}, |
| 297 | {431, -40000}, |
| 298 | {426, -35000}, |
| 299 | {421, -30000}, |
| 300 | {415, -25000}, |
| 301 | {410, -20000}, |
| 302 | {405, -15000}, |
| 303 | {399, -10000}, |
| 304 | {394, -5000}, |
| 305 | {389, 0}, |
| 306 | {383, 5000}, |
| 307 | {378, 10000}, |
| 308 | {373, 15000}, |
| 309 | {367, 20000}, |
| 310 | {362, 25000}, |
| 311 | {357, 30000}, |
| 312 | {351, 35000}, |
| 313 | {346, 40000}, |
| 314 | {340, 45000}, |
| 315 | {335, 50000}, |
| 316 | {330, 55000}, |
| 317 | {324, 60000}, |
| 318 | {319, 65000}, |
| 319 | {313, 70000}, |
| 320 | {308, 75000}, |
| 321 | {302, 80000}, |
| 322 | {297, 85000}, |
| 323 | {291, 90000}, |
| 324 | {286, 95000}, |
| 325 | {281, 100000}, |
| 326 | {275, 105000}, |
| 327 | {270, 110000}, |
| 328 | {264, 115000}, |
| 329 | {259, 120000}, |
| 330 | {253, 125000}, |
| 331 | }; |
| 332 | |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 333 | static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table, |
Caesar Wang | 437df21 | 2015-11-09 12:48:58 +0800 | [diff] [blame] | 334 | int temp) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 335 | { |
| 336 | int high, low, mid; |
| 337 | |
| 338 | low = 0; |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 339 | high = table.length - 1; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 340 | mid = (high + low) / 2; |
| 341 | |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 342 | if (temp < table.id[low].temp || temp > table.id[high].temp) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 343 | return 0; |
| 344 | |
| 345 | while (low <= high) { |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 346 | if (temp == table.id[mid].temp) |
| 347 | return table.id[mid].code; |
| 348 | else if (temp < table.id[mid].temp) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 349 | high = mid - 1; |
| 350 | else |
| 351 | low = mid + 1; |
| 352 | mid = (low + high) / 2; |
| 353 | } |
| 354 | |
| 355 | return 0; |
| 356 | } |
| 357 | |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 358 | static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code, |
| 359 | int *temp) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 360 | { |
Dmitry Torokhov | d9a241c | 2015-08-07 13:59:23 -0700 | [diff] [blame] | 361 | unsigned int low = 1; |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 362 | unsigned int high = table.length - 1; |
Caesar Wang | 1e9a1ae | 2015-01-25 10:11:11 +0800 | [diff] [blame] | 363 | unsigned int mid = (low + high) / 2; |
| 364 | unsigned int num; |
| 365 | unsigned long denom; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 366 | |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 367 | WARN_ON(table.length < 2); |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 368 | |
Caesar Wang | 020ba95 | 2015-11-09 12:48:57 +0800 | [diff] [blame] | 369 | switch (table.mode) { |
| 370 | case ADC_DECREMENT: |
| 371 | code &= table.data_mask; |
| 372 | if (code < table.id[high].code) |
| 373 | return -EAGAIN; /* Incorrect reading */ |
Dmitry Torokhov | d9a241c | 2015-08-07 13:59:23 -0700 | [diff] [blame] | 374 | |
Caesar Wang | 020ba95 | 2015-11-09 12:48:57 +0800 | [diff] [blame] | 375 | while (low <= high) { |
| 376 | if (code >= table.id[mid].code && |
| 377 | code < table.id[mid - 1].code) |
| 378 | break; |
| 379 | else if (code < table.id[mid].code) |
| 380 | low = mid + 1; |
| 381 | else |
| 382 | high = mid - 1; |
| 383 | |
| 384 | mid = (low + high) / 2; |
| 385 | } |
| 386 | break; |
| 387 | case ADC_INCREMENT: |
| 388 | code &= table.data_mask; |
| 389 | if (code < table.id[low].code) |
| 390 | return -EAGAIN; /* Incorrect reading */ |
| 391 | |
| 392 | while (low <= high) { |
| 393 | if (code >= table.id[mid - 1].code && |
| 394 | code < table.id[mid].code) |
| 395 | break; |
| 396 | else if (code > table.id[mid].code) |
| 397 | low = mid + 1; |
| 398 | else |
| 399 | high = mid - 1; |
| 400 | |
| 401 | mid = (low + high) / 2; |
| 402 | } |
| 403 | break; |
| 404 | default: |
| 405 | pr_err("Invalid the conversion table\n"); |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 406 | } |
| 407 | |
Caesar Wang | 1e9a1ae | 2015-01-25 10:11:11 +0800 | [diff] [blame] | 408 | /* |
| 409 | * The 5C granularity provided by the table is too much. Let's |
| 410 | * assume that the relationship between sensor readings and |
| 411 | * temperature between 2 table entries is linear and interpolate |
| 412 | * to produce less granular result. |
| 413 | */ |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 414 | num = table.id[mid].temp - v2_code_table[mid - 1].temp; |
Caesar Wang | 020ba95 | 2015-11-09 12:48:57 +0800 | [diff] [blame] | 415 | num *= abs(table.id[mid - 1].code - code); |
| 416 | denom = abs(table.id[mid - 1].code - table.id[mid].code); |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 417 | *temp = table.id[mid - 1].temp + (num / denom); |
Dmitry Torokhov | d9a241c | 2015-08-07 13:59:23 -0700 | [diff] [blame] | 418 | |
| 419 | return 0; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | /** |
Caesar Wang | 144c556 | 2015-11-05 13:17:59 +0800 | [diff] [blame] | 423 | * rk_tsadcv2_initialize - initialize TASDC Controller. |
| 424 | * |
| 425 | * (1) Set TSADC_V2_AUTO_PERIOD: |
| 426 | * Configure the interleave between every two accessing of |
| 427 | * TSADC in normal operation. |
| 428 | * |
| 429 | * (2) Set TSADCV2_AUTO_PERIOD_HT: |
| 430 | * Configure the interleave between every two accessing of |
| 431 | * TSADC after the temperature is higher than COM_SHUT or COM_INT. |
| 432 | * |
| 433 | * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE: |
| 434 | * If the temperature is higher than COMP_INT or COMP_SHUT for |
| 435 | * "debounce" times, TSADC controller will generate interrupt or TSHUT. |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 436 | */ |
| 437 | static void rk_tsadcv2_initialize(void __iomem *regs, |
| 438 | enum tshut_polarity tshut_polarity) |
| 439 | { |
| 440 | if (tshut_polarity == TSHUT_HIGH_ACTIVE) |
Dmitry Torokhov | 452e01b | 2015-08-07 14:00:52 -0700 | [diff] [blame] | 441 | writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH, |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 442 | regs + TSADCV2_AUTO_CON); |
| 443 | else |
Dmitry Torokhov | 452e01b | 2015-08-07 14:00:52 -0700 | [diff] [blame] | 444 | writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH, |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 445 | regs + TSADCV2_AUTO_CON); |
| 446 | |
| 447 | writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, regs + TSADCV2_AUTO_PERIOD); |
| 448 | writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT, |
| 449 | regs + TSADCV2_HIGHT_INT_DEBOUNCE); |
| 450 | writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME, |
| 451 | regs + TSADCV2_AUTO_PERIOD_HT); |
| 452 | writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT, |
| 453 | regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE); |
| 454 | } |
| 455 | |
Caesar Wang | 7b02a5e | 2015-12-03 16:48:42 +0800 | [diff] [blame] | 456 | static void rk_tsadcv1_irq_ack(void __iomem *regs) |
| 457 | { |
| 458 | u32 val; |
| 459 | |
| 460 | val = readl_relaxed(regs + TSADCV2_INT_PD); |
| 461 | writel_relaxed(val & TSADCV1_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD); |
| 462 | } |
| 463 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 464 | static void rk_tsadcv2_irq_ack(void __iomem *regs) |
| 465 | { |
| 466 | u32 val; |
| 467 | |
| 468 | val = readl_relaxed(regs + TSADCV2_INT_PD); |
Dmitry Torokhov | 452e01b | 2015-08-07 14:00:52 -0700 | [diff] [blame] | 469 | writel_relaxed(val & TSADCV2_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD); |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 470 | } |
| 471 | |
| 472 | static void rk_tsadcv2_control(void __iomem *regs, bool enable) |
| 473 | { |
| 474 | u32 val; |
| 475 | |
| 476 | val = readl_relaxed(regs + TSADCV2_AUTO_CON); |
| 477 | if (enable) |
| 478 | val |= TSADCV2_AUTO_EN; |
| 479 | else |
| 480 | val &= ~TSADCV2_AUTO_EN; |
| 481 | |
| 482 | writel_relaxed(val, regs + TSADCV2_AUTO_CON); |
| 483 | } |
| 484 | |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 485 | static int rk_tsadcv2_get_temp(struct chip_tsadc_table table, |
| 486 | int chn, void __iomem *regs, int *temp) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 487 | { |
| 488 | u32 val; |
| 489 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 490 | val = readl_relaxed(regs + TSADCV2_DATA(chn)); |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 491 | |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 492 | return rk_tsadcv2_code_to_temp(table, val, temp); |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 493 | } |
| 494 | |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 495 | static void rk_tsadcv2_tshut_temp(struct chip_tsadc_table table, |
Caesar Wang | 437df21 | 2015-11-09 12:48:58 +0800 | [diff] [blame] | 496 | int chn, void __iomem *regs, int temp) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 497 | { |
| 498 | u32 tshut_value, val; |
| 499 | |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 500 | tshut_value = rk_tsadcv2_temp_to_code(table, temp); |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 501 | writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn)); |
| 502 | |
| 503 | /* TSHUT will be valid */ |
| 504 | val = readl_relaxed(regs + TSADCV2_AUTO_CON); |
| 505 | writel_relaxed(val | TSADCV2_AUTO_SRC_EN(chn), regs + TSADCV2_AUTO_CON); |
| 506 | } |
| 507 | |
| 508 | static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs, |
| 509 | enum tshut_mode mode) |
| 510 | { |
| 511 | u32 val; |
| 512 | |
| 513 | val = readl_relaxed(regs + TSADCV2_INT_EN); |
| 514 | if (mode == TSHUT_MODE_GPIO) { |
| 515 | val &= ~TSADCV2_SHUT_2CRU_SRC_EN(chn); |
| 516 | val |= TSADCV2_SHUT_2GPIO_SRC_EN(chn); |
| 517 | } else { |
| 518 | val &= ~TSADCV2_SHUT_2GPIO_SRC_EN(chn); |
| 519 | val |= TSADCV2_SHUT_2CRU_SRC_EN(chn); |
| 520 | } |
| 521 | |
| 522 | writel_relaxed(val, regs + TSADCV2_INT_EN); |
| 523 | } |
| 524 | |
Caesar Wang | 7b02a5e | 2015-12-03 16:48:42 +0800 | [diff] [blame] | 525 | static const struct rockchip_tsadc_chip rk3228_tsadc_data = { |
| 526 | .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */ |
| 527 | .chn_num = 1, /* one channel for tsadc */ |
| 528 | |
| 529 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
| 530 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
| 531 | .tshut_temp = 95000, |
| 532 | |
| 533 | .initialize = rk_tsadcv2_initialize, |
| 534 | .irq_ack = rk_tsadcv1_irq_ack, |
| 535 | .control = rk_tsadcv2_control, |
| 536 | .get_temp = rk_tsadcv2_get_temp, |
| 537 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
| 538 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
| 539 | |
| 540 | .table = { |
| 541 | .id = v1_code_table, |
| 542 | .length = ARRAY_SIZE(v1_code_table), |
| 543 | .data_mask = TSADCV3_DATA_MASK, |
| 544 | .mode = ADC_DECREMENT, |
| 545 | }, |
| 546 | }; |
| 547 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 548 | static const struct rockchip_tsadc_chip rk3288_tsadc_data = { |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 549 | .chn_id[SENSOR_CPU] = 1, /* cpu sensor is channel 1 */ |
| 550 | .chn_id[SENSOR_GPU] = 2, /* gpu sensor is channel 2 */ |
| 551 | .chn_num = 2, /* two channels for tsadc */ |
| 552 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 553 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
| 554 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
| 555 | .tshut_temp = 95000, |
| 556 | |
| 557 | .initialize = rk_tsadcv2_initialize, |
| 558 | .irq_ack = rk_tsadcv2_irq_ack, |
| 559 | .control = rk_tsadcv2_control, |
| 560 | .get_temp = rk_tsadcv2_get_temp, |
| 561 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
| 562 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 563 | |
| 564 | .table = { |
| 565 | .id = v2_code_table, |
| 566 | .length = ARRAY_SIZE(v2_code_table), |
| 567 | .data_mask = TSADCV2_DATA_MASK, |
Caesar Wang | 020ba95 | 2015-11-09 12:48:57 +0800 | [diff] [blame] | 568 | .mode = ADC_DECREMENT, |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 569 | }, |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 570 | }; |
| 571 | |
Caesar Wang | 20f0af7 | 2015-11-09 12:48:59 +0800 | [diff] [blame] | 572 | static const struct rockchip_tsadc_chip rk3368_tsadc_data = { |
| 573 | .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */ |
| 574 | .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */ |
| 575 | .chn_num = 2, /* two channels for tsadc */ |
| 576 | |
| 577 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
| 578 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
| 579 | .tshut_temp = 95000, |
| 580 | |
| 581 | .initialize = rk_tsadcv2_initialize, |
| 582 | .irq_ack = rk_tsadcv2_irq_ack, |
| 583 | .control = rk_tsadcv2_control, |
| 584 | .get_temp = rk_tsadcv2_get_temp, |
| 585 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
| 586 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
| 587 | |
| 588 | .table = { |
| 589 | .id = v3_code_table, |
| 590 | .length = ARRAY_SIZE(v3_code_table), |
| 591 | .data_mask = TSADCV3_DATA_MASK, |
| 592 | .mode = ADC_INCREMENT, |
| 593 | }, |
| 594 | }; |
| 595 | |
Caesar Wang | b0d7033 | 2015-12-03 16:48:43 +0800 | [diff] [blame^] | 596 | static const struct rockchip_tsadc_chip rk3399_tsadc_data = { |
| 597 | .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */ |
| 598 | .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */ |
| 599 | .chn_num = 2, /* two channels for tsadc */ |
| 600 | |
| 601 | .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ |
| 602 | .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ |
| 603 | .tshut_temp = 95000, |
| 604 | |
| 605 | .initialize = rk_tsadcv2_initialize, |
| 606 | .irq_ack = rk_tsadcv1_irq_ack, |
| 607 | .control = rk_tsadcv2_control, |
| 608 | .get_temp = rk_tsadcv2_get_temp, |
| 609 | .set_tshut_temp = rk_tsadcv2_tshut_temp, |
| 610 | .set_tshut_mode = rk_tsadcv2_tshut_mode, |
| 611 | |
| 612 | .table = { |
| 613 | .id = v4_code_table, |
| 614 | .length = ARRAY_SIZE(v4_code_table), |
| 615 | .data_mask = TSADCV3_DATA_MASK, |
| 616 | .mode = ADC_DECREMENT, |
| 617 | }, |
| 618 | }; |
| 619 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 620 | static const struct of_device_id of_rockchip_thermal_match[] = { |
| 621 | { |
Caesar Wang | 7b02a5e | 2015-12-03 16:48:42 +0800 | [diff] [blame] | 622 | .compatible = "rockchip,rk3228-tsadc", |
| 623 | .data = (void *)&rk3228_tsadc_data, |
| 624 | }, |
| 625 | { |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 626 | .compatible = "rockchip,rk3288-tsadc", |
| 627 | .data = (void *)&rk3288_tsadc_data, |
| 628 | }, |
Caesar Wang | 20f0af7 | 2015-11-09 12:48:59 +0800 | [diff] [blame] | 629 | { |
| 630 | .compatible = "rockchip,rk3368-tsadc", |
| 631 | .data = (void *)&rk3368_tsadc_data, |
| 632 | }, |
Caesar Wang | b0d7033 | 2015-12-03 16:48:43 +0800 | [diff] [blame^] | 633 | { |
| 634 | .compatible = "rockchip,rk3399-tsadc", |
| 635 | .data = (void *)&rk3399_tsadc_data, |
| 636 | }, |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 637 | { /* end */ }, |
| 638 | }; |
| 639 | MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match); |
| 640 | |
| 641 | static void |
| 642 | rockchip_thermal_toggle_sensor(struct rockchip_thermal_sensor *sensor, bool on) |
| 643 | { |
| 644 | struct thermal_zone_device *tzd = sensor->tzd; |
| 645 | |
| 646 | tzd->ops->set_mode(tzd, |
| 647 | on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED); |
| 648 | } |
| 649 | |
| 650 | static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev) |
| 651 | { |
| 652 | struct rockchip_thermal_data *thermal = dev; |
| 653 | int i; |
| 654 | |
| 655 | dev_dbg(&thermal->pdev->dev, "thermal alarm\n"); |
| 656 | |
| 657 | thermal->chip->irq_ack(thermal->regs); |
| 658 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 659 | for (i = 0; i < thermal->chip->chn_num; i++) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 660 | thermal_zone_device_update(thermal->sensors[i].tzd); |
| 661 | |
| 662 | return IRQ_HANDLED; |
| 663 | } |
| 664 | |
Sascha Hauer | 17e8351 | 2015-07-24 08:12:54 +0200 | [diff] [blame] | 665 | static int rockchip_thermal_get_temp(void *_sensor, int *out_temp) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 666 | { |
| 667 | struct rockchip_thermal_sensor *sensor = _sensor; |
| 668 | struct rockchip_thermal_data *thermal = sensor->thermal; |
| 669 | const struct rockchip_tsadc_chip *tsadc = sensor->thermal->chip; |
| 670 | int retval; |
| 671 | |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 672 | retval = tsadc->get_temp(tsadc->table, |
| 673 | sensor->id, thermal->regs, out_temp); |
Sascha Hauer | 17e8351 | 2015-07-24 08:12:54 +0200 | [diff] [blame] | 674 | dev_dbg(&thermal->pdev->dev, "sensor %d - temp: %d, retval: %d\n", |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 675 | sensor->id, *out_temp, retval); |
| 676 | |
| 677 | return retval; |
| 678 | } |
| 679 | |
| 680 | static const struct thermal_zone_of_device_ops rockchip_of_thermal_ops = { |
| 681 | .get_temp = rockchip_thermal_get_temp, |
| 682 | }; |
| 683 | |
| 684 | static int rockchip_configure_from_dt(struct device *dev, |
| 685 | struct device_node *np, |
| 686 | struct rockchip_thermal_data *thermal) |
| 687 | { |
| 688 | u32 shut_temp, tshut_mode, tshut_polarity; |
| 689 | |
| 690 | if (of_property_read_u32(np, "rockchip,hw-tshut-temp", &shut_temp)) { |
| 691 | dev_warn(dev, |
Caesar Wang | 437df21 | 2015-11-09 12:48:58 +0800 | [diff] [blame] | 692 | "Missing tshut temp property, using default %d\n", |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 693 | thermal->chip->tshut_temp); |
| 694 | thermal->tshut_temp = thermal->chip->tshut_temp; |
| 695 | } else { |
| 696 | thermal->tshut_temp = shut_temp; |
| 697 | } |
| 698 | |
| 699 | if (thermal->tshut_temp > INT_MAX) { |
Caesar Wang | 437df21 | 2015-11-09 12:48:58 +0800 | [diff] [blame] | 700 | dev_err(dev, "Invalid tshut temperature specified: %d\n", |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 701 | thermal->tshut_temp); |
| 702 | return -ERANGE; |
| 703 | } |
| 704 | |
| 705 | if (of_property_read_u32(np, "rockchip,hw-tshut-mode", &tshut_mode)) { |
| 706 | dev_warn(dev, |
| 707 | "Missing tshut mode property, using default (%s)\n", |
| 708 | thermal->chip->tshut_mode == TSHUT_MODE_GPIO ? |
| 709 | "gpio" : "cru"); |
| 710 | thermal->tshut_mode = thermal->chip->tshut_mode; |
| 711 | } else { |
| 712 | thermal->tshut_mode = tshut_mode; |
| 713 | } |
| 714 | |
| 715 | if (thermal->tshut_mode > 1) { |
| 716 | dev_err(dev, "Invalid tshut mode specified: %d\n", |
| 717 | thermal->tshut_mode); |
| 718 | return -EINVAL; |
| 719 | } |
| 720 | |
| 721 | if (of_property_read_u32(np, "rockchip,hw-tshut-polarity", |
| 722 | &tshut_polarity)) { |
| 723 | dev_warn(dev, |
| 724 | "Missing tshut-polarity property, using default (%s)\n", |
| 725 | thermal->chip->tshut_polarity == TSHUT_LOW_ACTIVE ? |
| 726 | "low" : "high"); |
| 727 | thermal->tshut_polarity = thermal->chip->tshut_polarity; |
| 728 | } else { |
| 729 | thermal->tshut_polarity = tshut_polarity; |
| 730 | } |
| 731 | |
| 732 | if (thermal->tshut_polarity > 1) { |
| 733 | dev_err(dev, "Invalid tshut-polarity specified: %d\n", |
| 734 | thermal->tshut_polarity); |
| 735 | return -EINVAL; |
| 736 | } |
| 737 | |
| 738 | return 0; |
| 739 | } |
| 740 | |
| 741 | static int |
| 742 | rockchip_thermal_register_sensor(struct platform_device *pdev, |
| 743 | struct rockchip_thermal_data *thermal, |
| 744 | struct rockchip_thermal_sensor *sensor, |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 745 | int id) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 746 | { |
| 747 | const struct rockchip_tsadc_chip *tsadc = thermal->chip; |
| 748 | int error; |
| 749 | |
| 750 | tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode); |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 751 | tsadc->set_tshut_temp(tsadc->table, id, thermal->regs, |
| 752 | thermal->tshut_temp); |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 753 | |
| 754 | sensor->thermal = thermal; |
| 755 | sensor->id = id; |
| 756 | sensor->tzd = thermal_zone_of_sensor_register(&pdev->dev, id, sensor, |
| 757 | &rockchip_of_thermal_ops); |
| 758 | if (IS_ERR(sensor->tzd)) { |
| 759 | error = PTR_ERR(sensor->tzd); |
| 760 | dev_err(&pdev->dev, "failed to register sensor %d: %d\n", |
| 761 | id, error); |
| 762 | return error; |
| 763 | } |
| 764 | |
| 765 | return 0; |
| 766 | } |
| 767 | |
Caesar Wang | 13c1cfd | 2015-12-03 16:48:39 +0800 | [diff] [blame] | 768 | /** |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 769 | * Reset TSADC Controller, reset all tsadc registers. |
| 770 | */ |
| 771 | static void rockchip_thermal_reset_controller(struct reset_control *reset) |
| 772 | { |
| 773 | reset_control_assert(reset); |
| 774 | usleep_range(10, 20); |
| 775 | reset_control_deassert(reset); |
| 776 | } |
| 777 | |
| 778 | static int rockchip_thermal_probe(struct platform_device *pdev) |
| 779 | { |
| 780 | struct device_node *np = pdev->dev.of_node; |
| 781 | struct rockchip_thermal_data *thermal; |
| 782 | const struct of_device_id *match; |
| 783 | struct resource *res; |
| 784 | int irq; |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 785 | int i, j; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 786 | int error; |
| 787 | |
| 788 | match = of_match_node(of_rockchip_thermal_match, np); |
| 789 | if (!match) |
| 790 | return -ENXIO; |
| 791 | |
| 792 | irq = platform_get_irq(pdev, 0); |
| 793 | if (irq < 0) { |
| 794 | dev_err(&pdev->dev, "no irq resource?\n"); |
| 795 | return -EINVAL; |
| 796 | } |
| 797 | |
| 798 | thermal = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_thermal_data), |
| 799 | GFP_KERNEL); |
| 800 | if (!thermal) |
| 801 | return -ENOMEM; |
| 802 | |
| 803 | thermal->pdev = pdev; |
| 804 | |
| 805 | thermal->chip = (const struct rockchip_tsadc_chip *)match->data; |
| 806 | if (!thermal->chip) |
| 807 | return -EINVAL; |
| 808 | |
| 809 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 810 | thermal->regs = devm_ioremap_resource(&pdev->dev, res); |
| 811 | if (IS_ERR(thermal->regs)) |
| 812 | return PTR_ERR(thermal->regs); |
| 813 | |
| 814 | thermal->reset = devm_reset_control_get(&pdev->dev, "tsadc-apb"); |
| 815 | if (IS_ERR(thermal->reset)) { |
| 816 | error = PTR_ERR(thermal->reset); |
| 817 | dev_err(&pdev->dev, "failed to get tsadc reset: %d\n", error); |
| 818 | return error; |
| 819 | } |
| 820 | |
| 821 | thermal->clk = devm_clk_get(&pdev->dev, "tsadc"); |
| 822 | if (IS_ERR(thermal->clk)) { |
| 823 | error = PTR_ERR(thermal->clk); |
| 824 | dev_err(&pdev->dev, "failed to get tsadc clock: %d\n", error); |
| 825 | return error; |
| 826 | } |
| 827 | |
| 828 | thermal->pclk = devm_clk_get(&pdev->dev, "apb_pclk"); |
| 829 | if (IS_ERR(thermal->pclk)) { |
Dan Carpenter | 0d0a2bf | 2015-04-21 12:34:10 +0300 | [diff] [blame] | 830 | error = PTR_ERR(thermal->pclk); |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 831 | dev_err(&pdev->dev, "failed to get apb_pclk clock: %d\n", |
| 832 | error); |
| 833 | return error; |
| 834 | } |
| 835 | |
| 836 | error = clk_prepare_enable(thermal->clk); |
| 837 | if (error) { |
| 838 | dev_err(&pdev->dev, "failed to enable converter clock: %d\n", |
| 839 | error); |
| 840 | return error; |
| 841 | } |
| 842 | |
| 843 | error = clk_prepare_enable(thermal->pclk); |
| 844 | if (error) { |
| 845 | dev_err(&pdev->dev, "failed to enable pclk: %d\n", error); |
| 846 | goto err_disable_clk; |
| 847 | } |
| 848 | |
| 849 | rockchip_thermal_reset_controller(thermal->reset); |
| 850 | |
| 851 | error = rockchip_configure_from_dt(&pdev->dev, np, thermal); |
| 852 | if (error) { |
| 853 | dev_err(&pdev->dev, "failed to parse device tree data: %d\n", |
| 854 | error); |
| 855 | goto err_disable_pclk; |
| 856 | } |
| 857 | |
| 858 | thermal->chip->initialize(thermal->regs, thermal->tshut_polarity); |
| 859 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 860 | for (i = 0; i < thermal->chip->chn_num; i++) { |
| 861 | error = rockchip_thermal_register_sensor(pdev, thermal, |
| 862 | &thermal->sensors[i], |
| 863 | thermal->chip->chn_id[i]); |
| 864 | if (error) { |
| 865 | dev_err(&pdev->dev, |
| 866 | "failed to register sensor[%d] : error = %d\n", |
| 867 | i, error); |
| 868 | for (j = 0; j < i; j++) |
| 869 | thermal_zone_of_sensor_unregister(&pdev->dev, |
| 870 | thermal->sensors[j].tzd); |
| 871 | goto err_disable_pclk; |
| 872 | } |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 873 | } |
| 874 | |
| 875 | error = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
| 876 | &rockchip_thermal_alarm_irq_thread, |
| 877 | IRQF_ONESHOT, |
| 878 | "rockchip_thermal", thermal); |
| 879 | if (error) { |
| 880 | dev_err(&pdev->dev, |
| 881 | "failed to request tsadc irq: %d\n", error); |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 882 | goto err_unregister_sensor; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 883 | } |
| 884 | |
| 885 | thermal->chip->control(thermal->regs, true); |
| 886 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 887 | for (i = 0; i < thermal->chip->chn_num; i++) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 888 | rockchip_thermal_toggle_sensor(&thermal->sensors[i], true); |
| 889 | |
| 890 | platform_set_drvdata(pdev, thermal); |
| 891 | |
| 892 | return 0; |
| 893 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 894 | err_unregister_sensor: |
| 895 | while (i--) |
| 896 | thermal_zone_of_sensor_unregister(&pdev->dev, |
| 897 | thermal->sensors[i].tzd); |
| 898 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 899 | err_disable_pclk: |
| 900 | clk_disable_unprepare(thermal->pclk); |
| 901 | err_disable_clk: |
| 902 | clk_disable_unprepare(thermal->clk); |
| 903 | |
| 904 | return error; |
| 905 | } |
| 906 | |
| 907 | static int rockchip_thermal_remove(struct platform_device *pdev) |
| 908 | { |
| 909 | struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev); |
| 910 | int i; |
| 911 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 912 | for (i = 0; i < thermal->chip->chn_num; i++) { |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 913 | struct rockchip_thermal_sensor *sensor = &thermal->sensors[i]; |
| 914 | |
| 915 | rockchip_thermal_toggle_sensor(sensor, false); |
| 916 | thermal_zone_of_sensor_unregister(&pdev->dev, sensor->tzd); |
| 917 | } |
| 918 | |
| 919 | thermal->chip->control(thermal->regs, false); |
| 920 | |
| 921 | clk_disable_unprepare(thermal->pclk); |
| 922 | clk_disable_unprepare(thermal->clk); |
| 923 | |
| 924 | return 0; |
| 925 | } |
| 926 | |
| 927 | static int __maybe_unused rockchip_thermal_suspend(struct device *dev) |
| 928 | { |
| 929 | struct platform_device *pdev = to_platform_device(dev); |
| 930 | struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev); |
| 931 | int i; |
| 932 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 933 | for (i = 0; i < thermal->chip->chn_num; i++) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 934 | rockchip_thermal_toggle_sensor(&thermal->sensors[i], false); |
| 935 | |
| 936 | thermal->chip->control(thermal->regs, false); |
| 937 | |
| 938 | clk_disable(thermal->pclk); |
| 939 | clk_disable(thermal->clk); |
| 940 | |
Caesar Wang | 7e38a5b | 2015-10-23 19:25:27 +0800 | [diff] [blame] | 941 | pinctrl_pm_select_sleep_state(dev); |
| 942 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 943 | return 0; |
| 944 | } |
| 945 | |
| 946 | static int __maybe_unused rockchip_thermal_resume(struct device *dev) |
| 947 | { |
| 948 | struct platform_device *pdev = to_platform_device(dev); |
| 949 | struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev); |
| 950 | int i; |
| 951 | int error; |
| 952 | |
| 953 | error = clk_enable(thermal->clk); |
| 954 | if (error) |
| 955 | return error; |
| 956 | |
| 957 | error = clk_enable(thermal->pclk); |
| 958 | if (error) |
| 959 | return error; |
| 960 | |
| 961 | rockchip_thermal_reset_controller(thermal->reset); |
| 962 | |
| 963 | thermal->chip->initialize(thermal->regs, thermal->tshut_polarity); |
| 964 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 965 | for (i = 0; i < thermal->chip->chn_num; i++) { |
| 966 | int id = thermal->sensors[i].id; |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 967 | |
| 968 | thermal->chip->set_tshut_mode(id, thermal->regs, |
| 969 | thermal->tshut_mode); |
Caesar Wang | ce74110 | 2015-11-09 12:48:56 +0800 | [diff] [blame] | 970 | thermal->chip->set_tshut_temp(thermal->chip->table, |
| 971 | id, thermal->regs, |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 972 | thermal->tshut_temp); |
| 973 | } |
| 974 | |
| 975 | thermal->chip->control(thermal->regs, true); |
| 976 | |
Caesar Wang | 1d98b61 | 2015-11-05 13:17:58 +0800 | [diff] [blame] | 977 | for (i = 0; i < thermal->chip->chn_num; i++) |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 978 | rockchip_thermal_toggle_sensor(&thermal->sensors[i], true); |
| 979 | |
Caesar Wang | 7e38a5b | 2015-10-23 19:25:27 +0800 | [diff] [blame] | 980 | pinctrl_pm_select_default_state(dev); |
| 981 | |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 982 | return 0; |
| 983 | } |
| 984 | |
| 985 | static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops, |
| 986 | rockchip_thermal_suspend, rockchip_thermal_resume); |
| 987 | |
| 988 | static struct platform_driver rockchip_thermal_driver = { |
| 989 | .driver = { |
| 990 | .name = "rockchip-thermal", |
Caesar Wang | cbac8f63 | 2014-11-24 12:58:59 +0800 | [diff] [blame] | 991 | .pm = &rockchip_thermal_pm_ops, |
| 992 | .of_match_table = of_rockchip_thermal_match, |
| 993 | }, |
| 994 | .probe = rockchip_thermal_probe, |
| 995 | .remove = rockchip_thermal_remove, |
| 996 | }; |
| 997 | |
| 998 | module_platform_driver(rockchip_thermal_driver); |
| 999 | |
| 1000 | MODULE_DESCRIPTION("ROCKCHIP THERMAL Driver"); |
| 1001 | MODULE_AUTHOR("Rockchip, Inc."); |
| 1002 | MODULE_LICENSE("GPL v2"); |
| 1003 | MODULE_ALIAS("platform:rockchip-thermal"); |