Yangtao Li | dccc5c3 | 2019-12-19 09:28:17 -0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Thermal sensor driver for Allwinner SOC |
| 4 | * Copyright (C) 2019 Yangtao Li |
| 5 | * |
| 6 | * Based on the work of Icenowy Zheng <icenowy@aosc.io> |
| 7 | * Based on the work of Ondrej Jirman <megous@megous.com> |
| 8 | * Based on the work of Josef Gajdusek <atx@atx.name> |
| 9 | */ |
| 10 | |
| 11 | #include <linux/clk.h> |
| 12 | #include <linux/device.h> |
| 13 | #include <linux/interrupt.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/nvmem-consumer.h> |
| 16 | #include <linux/of_device.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/regmap.h> |
| 19 | #include <linux/reset.h> |
| 20 | #include <linux/slab.h> |
| 21 | #include <linux/thermal.h> |
| 22 | |
Yangtao Li | 85f0ad2 | 2019-12-28 17:19:04 +0000 | [diff] [blame] | 23 | #include "thermal_hwmon.h" |
| 24 | |
Yangtao Li | dccc5c3 | 2019-12-19 09:28:17 -0800 | [diff] [blame] | 25 | #define MAX_SENSOR_NUM 4 |
| 26 | |
| 27 | #define FT_TEMP_MASK GENMASK(11, 0) |
| 28 | #define TEMP_CALIB_MASK GENMASK(11, 0) |
| 29 | #define CALIBRATE_DEFAULT 0x800 |
| 30 | |
| 31 | #define SUN8I_THS_CTRL0 0x00 |
| 32 | #define SUN8I_THS_CTRL2 0x40 |
| 33 | #define SUN8I_THS_IC 0x44 |
| 34 | #define SUN8I_THS_IS 0x48 |
| 35 | #define SUN8I_THS_MFC 0x70 |
| 36 | #define SUN8I_THS_TEMP_CALIB 0x74 |
| 37 | #define SUN8I_THS_TEMP_DATA 0x80 |
| 38 | |
| 39 | #define SUN50I_THS_CTRL0 0x00 |
| 40 | #define SUN50I_H6_THS_ENABLE 0x04 |
| 41 | #define SUN50I_H6_THS_PC 0x08 |
| 42 | #define SUN50I_H6_THS_DIC 0x10 |
| 43 | #define SUN50I_H6_THS_DIS 0x20 |
| 44 | #define SUN50I_H6_THS_MFC 0x30 |
| 45 | #define SUN50I_H6_THS_TEMP_CALIB 0xa0 |
| 46 | #define SUN50I_H6_THS_TEMP_DATA 0xc0 |
| 47 | |
| 48 | #define SUN8I_THS_CTRL0_T_ACQ0(x) (GENMASK(15, 0) & (x)) |
| 49 | #define SUN8I_THS_CTRL2_T_ACQ1(x) ((GENMASK(15, 0) & (x)) << 16) |
| 50 | #define SUN8I_THS_DATA_IRQ_STS(x) BIT(x + 8) |
| 51 | |
| 52 | #define SUN50I_THS_CTRL0_T_ACQ(x) ((GENMASK(15, 0) & (x)) << 16) |
| 53 | #define SUN50I_THS_FILTER_EN BIT(2) |
| 54 | #define SUN50I_THS_FILTER_TYPE(x) (GENMASK(1, 0) & (x)) |
| 55 | #define SUN50I_H6_THS_PC_TEMP_PERIOD(x) ((GENMASK(19, 0) & (x)) << 12) |
| 56 | #define SUN50I_H6_THS_DATA_IRQ_STS(x) BIT(x) |
| 57 | |
| 58 | /* millidegree celsius */ |
Yangtao Li | dccc5c3 | 2019-12-19 09:28:17 -0800 | [diff] [blame] | 59 | |
| 60 | struct tsensor { |
| 61 | struct ths_device *tmdev; |
| 62 | struct thermal_zone_device *tzd; |
| 63 | int id; |
| 64 | }; |
| 65 | |
| 66 | struct ths_thermal_chip { |
| 67 | bool has_mod_clk; |
| 68 | bool has_bus_clk_reset; |
| 69 | int sensor_num; |
| 70 | int offset; |
| 71 | int scale; |
| 72 | int ft_deviation; |
| 73 | int temp_data_base; |
| 74 | int (*calibrate)(struct ths_device *tmdev, |
| 75 | u16 *caldata, int callen); |
| 76 | int (*init)(struct ths_device *tmdev); |
| 77 | int (*irq_ack)(struct ths_device *tmdev); |
| 78 | int (*calc_temp)(struct ths_device *tmdev, |
| 79 | int id, int reg); |
| 80 | }; |
| 81 | |
| 82 | struct ths_device { |
| 83 | const struct ths_thermal_chip *chip; |
| 84 | struct device *dev; |
| 85 | struct regmap *regmap; |
| 86 | struct reset_control *reset; |
| 87 | struct clk *bus_clk; |
| 88 | struct clk *mod_clk; |
| 89 | struct tsensor sensor[MAX_SENSOR_NUM]; |
Yangtao Li | dccc5c3 | 2019-12-19 09:28:17 -0800 | [diff] [blame] | 90 | }; |
| 91 | |
| 92 | /* Temp Unit: millidegree Celsius */ |
| 93 | static int sun8i_ths_calc_temp(struct ths_device *tmdev, |
| 94 | int id, int reg) |
| 95 | { |
| 96 | return tmdev->chip->offset - (reg * tmdev->chip->scale / 10); |
| 97 | } |
| 98 | |
| 99 | static int sun50i_h5_calc_temp(struct ths_device *tmdev, |
| 100 | int id, int reg) |
| 101 | { |
| 102 | if (reg >= 0x500) |
| 103 | return -1191 * reg / 10 + 223000; |
| 104 | else if (!id) |
| 105 | return -1452 * reg / 10 + 259000; |
| 106 | else |
| 107 | return -1590 * reg / 10 + 276000; |
| 108 | } |
| 109 | |
| 110 | static int sun8i_ths_get_temp(void *data, int *temp) |
| 111 | { |
| 112 | struct tsensor *s = data; |
| 113 | struct ths_device *tmdev = s->tmdev; |
| 114 | int val = 0; |
| 115 | |
| 116 | regmap_read(tmdev->regmap, tmdev->chip->temp_data_base + |
| 117 | 0x4 * s->id, &val); |
| 118 | |
| 119 | /* ths have no data yet */ |
| 120 | if (!val) |
| 121 | return -EAGAIN; |
| 122 | |
| 123 | *temp = tmdev->chip->calc_temp(tmdev, s->id, val); |
| 124 | /* |
| 125 | * According to the original sdk, there are some platforms(rarely) |
| 126 | * that add a fixed offset value after calculating the temperature |
| 127 | * value. We can't simply put it on the formula for calculating the |
| 128 | * temperature above, because the formula for calculating the |
| 129 | * temperature above is also used when the sensor is calibrated. If |
| 130 | * do this, the correct calibration formula is hard to know. |
| 131 | */ |
| 132 | *temp += tmdev->chip->ft_deviation; |
| 133 | |
| 134 | return 0; |
| 135 | } |
| 136 | |
| 137 | static const struct thermal_zone_of_device_ops ths_ops = { |
| 138 | .get_temp = sun8i_ths_get_temp, |
| 139 | }; |
| 140 | |
| 141 | static const struct regmap_config config = { |
| 142 | .reg_bits = 32, |
| 143 | .val_bits = 32, |
| 144 | .reg_stride = 4, |
| 145 | .fast_io = true, |
| 146 | .max_register = 0xfc, |
| 147 | }; |
| 148 | |
| 149 | static int sun8i_h3_irq_ack(struct ths_device *tmdev) |
| 150 | { |
| 151 | int i, state, ret = 0; |
| 152 | |
| 153 | regmap_read(tmdev->regmap, SUN8I_THS_IS, &state); |
| 154 | |
| 155 | for (i = 0; i < tmdev->chip->sensor_num; i++) { |
| 156 | if (state & SUN8I_THS_DATA_IRQ_STS(i)) { |
| 157 | regmap_write(tmdev->regmap, SUN8I_THS_IS, |
| 158 | SUN8I_THS_DATA_IRQ_STS(i)); |
| 159 | ret |= BIT(i); |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | return ret; |
| 164 | } |
| 165 | |
| 166 | static int sun50i_h6_irq_ack(struct ths_device *tmdev) |
| 167 | { |
| 168 | int i, state, ret = 0; |
| 169 | |
| 170 | regmap_read(tmdev->regmap, SUN50I_H6_THS_DIS, &state); |
| 171 | |
| 172 | for (i = 0; i < tmdev->chip->sensor_num; i++) { |
| 173 | if (state & SUN50I_H6_THS_DATA_IRQ_STS(i)) { |
| 174 | regmap_write(tmdev->regmap, SUN50I_H6_THS_DIS, |
| 175 | SUN50I_H6_THS_DATA_IRQ_STS(i)); |
| 176 | ret |= BIT(i); |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | return ret; |
| 181 | } |
| 182 | |
| 183 | static irqreturn_t sun8i_irq_thread(int irq, void *data) |
| 184 | { |
| 185 | struct ths_device *tmdev = data; |
| 186 | int i, state; |
| 187 | |
| 188 | state = tmdev->chip->irq_ack(tmdev); |
| 189 | |
| 190 | for (i = 0; i < tmdev->chip->sensor_num; i++) { |
| 191 | if (state & BIT(i)) |
| 192 | thermal_zone_device_update(tmdev->sensor[i].tzd, |
| 193 | THERMAL_EVENT_UNSPECIFIED); |
| 194 | } |
| 195 | |
| 196 | return IRQ_HANDLED; |
| 197 | } |
| 198 | |
| 199 | static int sun8i_h3_ths_calibrate(struct ths_device *tmdev, |
| 200 | u16 *caldata, int callen) |
| 201 | { |
| 202 | int i; |
| 203 | |
| 204 | if (!caldata[0] || callen < 2 * tmdev->chip->sensor_num) |
| 205 | return -EINVAL; |
| 206 | |
| 207 | for (i = 0; i < tmdev->chip->sensor_num; i++) { |
| 208 | int offset = (i % 2) << 4; |
| 209 | |
| 210 | regmap_update_bits(tmdev->regmap, |
| 211 | SUN8I_THS_TEMP_CALIB + (4 * (i >> 1)), |
| 212 | 0xfff << offset, |
| 213 | caldata[i] << offset); |
| 214 | } |
| 215 | |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | static int sun50i_h6_ths_calibrate(struct ths_device *tmdev, |
| 220 | u16 *caldata, int callen) |
| 221 | { |
| 222 | struct device *dev = tmdev->dev; |
| 223 | int i, ft_temp; |
| 224 | |
| 225 | if (!caldata[0] || callen < 2 + 2 * tmdev->chip->sensor_num) |
| 226 | return -EINVAL; |
| 227 | |
| 228 | /* |
| 229 | * efuse layout: |
| 230 | * |
| 231 | * 0 11 16 32 |
| 232 | * +-------+-------+-------+ |
| 233 | * |temp| |sensor0|sensor1| |
| 234 | * +-------+-------+-------+ |
| 235 | * |
| 236 | * The calibration data on the H6 is the ambient temperature and |
| 237 | * sensor values that are filled during the factory test stage. |
| 238 | * |
| 239 | * The unit of stored FT temperature is 0.1 degreee celusis. |
| 240 | * |
| 241 | * We need to calculate a delta between measured and caluclated |
| 242 | * register values and this will become a calibration offset. |
| 243 | */ |
| 244 | ft_temp = (caldata[0] & FT_TEMP_MASK) * 100; |
Yangtao Li | dccc5c3 | 2019-12-19 09:28:17 -0800 | [diff] [blame] | 245 | |
| 246 | for (i = 0; i < tmdev->chip->sensor_num; i++) { |
| 247 | int sensor_reg = caldata[i + 1]; |
| 248 | int cdata, offset; |
| 249 | int sensor_temp = tmdev->chip->calc_temp(tmdev, i, sensor_reg); |
| 250 | |
| 251 | /* |
| 252 | * Calibration data is CALIBRATE_DEFAULT - (calculated |
| 253 | * temperature from sensor reading at factory temperature |
| 254 | * minus actual factory temperature) * 14.88 (scale from |
| 255 | * temperature to register values) |
| 256 | */ |
| 257 | cdata = CALIBRATE_DEFAULT - |
| 258 | ((sensor_temp - ft_temp) * 10 / tmdev->chip->scale); |
| 259 | if (cdata & ~TEMP_CALIB_MASK) { |
| 260 | /* |
| 261 | * Calibration value more than 12-bit, but calibration |
| 262 | * register is 12-bit. In this case, ths hardware can |
| 263 | * still work without calibration, although the data |
| 264 | * won't be so accurate. |
| 265 | */ |
| 266 | dev_warn(dev, "sensor%d is not calibrated.\n", i); |
| 267 | continue; |
| 268 | } |
| 269 | |
| 270 | offset = (i % 2) * 16; |
| 271 | regmap_update_bits(tmdev->regmap, |
| 272 | SUN50I_H6_THS_TEMP_CALIB + (i / 2 * 4), |
| 273 | 0xfff << offset, |
| 274 | cdata << offset); |
| 275 | } |
| 276 | |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | static int sun8i_ths_calibrate(struct ths_device *tmdev) |
| 281 | { |
| 282 | struct nvmem_cell *calcell; |
| 283 | struct device *dev = tmdev->dev; |
| 284 | u16 *caldata; |
| 285 | size_t callen; |
| 286 | int ret = 0; |
| 287 | |
| 288 | calcell = devm_nvmem_cell_get(dev, "calibration"); |
| 289 | if (IS_ERR(calcell)) { |
| 290 | if (PTR_ERR(calcell) == -EPROBE_DEFER) |
| 291 | return -EPROBE_DEFER; |
| 292 | /* |
| 293 | * Even if the external calibration data stored in sid is |
| 294 | * not accessible, the THS hardware can still work, although |
| 295 | * the data won't be so accurate. |
| 296 | * |
| 297 | * The default value of calibration register is 0x800 for |
| 298 | * every sensor, and the calibration value is usually 0x7xx |
| 299 | * or 0x8xx, so they won't be away from the default value |
| 300 | * for a lot. |
| 301 | * |
| 302 | * So here we do not return error if the calibartion data is |
| 303 | * not available, except the probe needs deferring. |
| 304 | */ |
| 305 | goto out; |
| 306 | } |
| 307 | |
| 308 | caldata = nvmem_cell_read(calcell, &callen); |
| 309 | if (IS_ERR(caldata)) { |
| 310 | ret = PTR_ERR(caldata); |
| 311 | goto out; |
| 312 | } |
| 313 | |
| 314 | tmdev->chip->calibrate(tmdev, caldata, callen); |
| 315 | |
| 316 | kfree(caldata); |
| 317 | out: |
| 318 | return ret; |
| 319 | } |
| 320 | |
| 321 | static int sun8i_ths_resource_init(struct ths_device *tmdev) |
| 322 | { |
| 323 | struct device *dev = tmdev->dev; |
| 324 | struct platform_device *pdev = to_platform_device(dev); |
| 325 | void __iomem *base; |
| 326 | int ret; |
| 327 | |
| 328 | base = devm_platform_ioremap_resource(pdev, 0); |
| 329 | if (IS_ERR(base)) |
| 330 | return PTR_ERR(base); |
| 331 | |
| 332 | tmdev->regmap = devm_regmap_init_mmio(dev, base, &config); |
| 333 | if (IS_ERR(tmdev->regmap)) |
| 334 | return PTR_ERR(tmdev->regmap); |
| 335 | |
| 336 | if (tmdev->chip->has_bus_clk_reset) { |
Yangtao Li | 69d5f3a | 2020-01-12 17:13:18 +0000 | [diff] [blame] | 337 | tmdev->reset = devm_reset_control_get(dev, NULL); |
Yangtao Li | dccc5c3 | 2019-12-19 09:28:17 -0800 | [diff] [blame] | 338 | if (IS_ERR(tmdev->reset)) |
| 339 | return PTR_ERR(tmdev->reset); |
| 340 | |
| 341 | tmdev->bus_clk = devm_clk_get(&pdev->dev, "bus"); |
| 342 | if (IS_ERR(tmdev->bus_clk)) |
| 343 | return PTR_ERR(tmdev->bus_clk); |
| 344 | } |
| 345 | |
| 346 | if (tmdev->chip->has_mod_clk) { |
| 347 | tmdev->mod_clk = devm_clk_get(&pdev->dev, "mod"); |
| 348 | if (IS_ERR(tmdev->mod_clk)) |
| 349 | return PTR_ERR(tmdev->mod_clk); |
| 350 | } |
| 351 | |
| 352 | ret = reset_control_deassert(tmdev->reset); |
| 353 | if (ret) |
| 354 | return ret; |
| 355 | |
| 356 | ret = clk_prepare_enable(tmdev->bus_clk); |
| 357 | if (ret) |
| 358 | goto assert_reset; |
| 359 | |
| 360 | ret = clk_set_rate(tmdev->mod_clk, 24000000); |
| 361 | if (ret) |
| 362 | goto bus_disable; |
| 363 | |
| 364 | ret = clk_prepare_enable(tmdev->mod_clk); |
| 365 | if (ret) |
| 366 | goto bus_disable; |
| 367 | |
| 368 | ret = sun8i_ths_calibrate(tmdev); |
| 369 | if (ret) |
| 370 | goto mod_disable; |
| 371 | |
| 372 | return 0; |
| 373 | |
| 374 | mod_disable: |
| 375 | clk_disable_unprepare(tmdev->mod_clk); |
| 376 | bus_disable: |
| 377 | clk_disable_unprepare(tmdev->bus_clk); |
| 378 | assert_reset: |
| 379 | reset_control_assert(tmdev->reset); |
| 380 | |
| 381 | return ret; |
| 382 | } |
| 383 | |
| 384 | static int sun8i_h3_thermal_init(struct ths_device *tmdev) |
| 385 | { |
| 386 | int val; |
| 387 | |
| 388 | /* average over 4 samples */ |
| 389 | regmap_write(tmdev->regmap, SUN8I_THS_MFC, |
| 390 | SUN50I_THS_FILTER_EN | |
| 391 | SUN50I_THS_FILTER_TYPE(1)); |
| 392 | /* |
| 393 | * clkin = 24MHz |
| 394 | * filter_samples = 4 |
| 395 | * period = 0.25s |
| 396 | * |
| 397 | * x = period * clkin / 4096 / filter_samples - 1 |
| 398 | * = 365 |
| 399 | */ |
| 400 | val = GENMASK(7 + tmdev->chip->sensor_num, 8); |
| 401 | regmap_write(tmdev->regmap, SUN8I_THS_IC, |
| 402 | SUN50I_H6_THS_PC_TEMP_PERIOD(365) | val); |
| 403 | /* |
| 404 | * T_acq = 20us |
| 405 | * clkin = 24MHz |
| 406 | * |
| 407 | * x = T_acq * clkin - 1 |
| 408 | * = 479 |
| 409 | */ |
| 410 | regmap_write(tmdev->regmap, SUN8I_THS_CTRL0, |
| 411 | SUN8I_THS_CTRL0_T_ACQ0(479)); |
| 412 | val = GENMASK(tmdev->chip->sensor_num - 1, 0); |
| 413 | regmap_write(tmdev->regmap, SUN8I_THS_CTRL2, |
| 414 | SUN8I_THS_CTRL2_T_ACQ1(479) | val); |
| 415 | |
| 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | /* |
| 420 | * Without this undocummented value, the returned temperatures would |
| 421 | * be higher than real ones by about 20C. |
| 422 | */ |
| 423 | #define SUN50I_H6_CTRL0_UNK 0x0000002f |
| 424 | |
| 425 | static int sun50i_h6_thermal_init(struct ths_device *tmdev) |
| 426 | { |
| 427 | int val; |
| 428 | |
| 429 | /* |
| 430 | * T_acq = 20us |
| 431 | * clkin = 24MHz |
| 432 | * |
| 433 | * x = T_acq * clkin - 1 |
| 434 | * = 479 |
| 435 | */ |
| 436 | regmap_write(tmdev->regmap, SUN50I_THS_CTRL0, |
| 437 | SUN50I_H6_CTRL0_UNK | SUN50I_THS_CTRL0_T_ACQ(479)); |
| 438 | /* average over 4 samples */ |
| 439 | regmap_write(tmdev->regmap, SUN50I_H6_THS_MFC, |
| 440 | SUN50I_THS_FILTER_EN | |
| 441 | SUN50I_THS_FILTER_TYPE(1)); |
| 442 | /* |
| 443 | * clkin = 24MHz |
| 444 | * filter_samples = 4 |
| 445 | * period = 0.25s |
| 446 | * |
| 447 | * x = period * clkin / 4096 / filter_samples - 1 |
| 448 | * = 365 |
| 449 | */ |
| 450 | regmap_write(tmdev->regmap, SUN50I_H6_THS_PC, |
| 451 | SUN50I_H6_THS_PC_TEMP_PERIOD(365)); |
| 452 | /* enable sensor */ |
| 453 | val = GENMASK(tmdev->chip->sensor_num - 1, 0); |
| 454 | regmap_write(tmdev->regmap, SUN50I_H6_THS_ENABLE, val); |
| 455 | /* thermal data interrupt enable */ |
| 456 | val = GENMASK(tmdev->chip->sensor_num - 1, 0); |
| 457 | regmap_write(tmdev->regmap, SUN50I_H6_THS_DIC, val); |
| 458 | |
| 459 | return 0; |
| 460 | } |
| 461 | |
| 462 | static int sun8i_ths_register(struct ths_device *tmdev) |
| 463 | { |
| 464 | int i; |
| 465 | |
| 466 | for (i = 0; i < tmdev->chip->sensor_num; i++) { |
| 467 | tmdev->sensor[i].tmdev = tmdev; |
| 468 | tmdev->sensor[i].id = i; |
| 469 | tmdev->sensor[i].tzd = |
| 470 | devm_thermal_zone_of_sensor_register(tmdev->dev, |
| 471 | i, |
| 472 | &tmdev->sensor[i], |
| 473 | &ths_ops); |
| 474 | if (IS_ERR(tmdev->sensor[i].tzd)) |
| 475 | return PTR_ERR(tmdev->sensor[i].tzd); |
Yangtao Li | 85f0ad2 | 2019-12-28 17:19:04 +0000 | [diff] [blame] | 476 | |
| 477 | if (devm_thermal_add_hwmon_sysfs(tmdev->sensor[i].tzd)) |
| 478 | dev_warn(tmdev->dev, |
| 479 | "Failed to add hwmon sysfs attributes\n"); |
Yangtao Li | dccc5c3 | 2019-12-19 09:28:17 -0800 | [diff] [blame] | 480 | } |
| 481 | |
| 482 | return 0; |
| 483 | } |
| 484 | |
| 485 | static int sun8i_ths_probe(struct platform_device *pdev) |
| 486 | { |
| 487 | struct ths_device *tmdev; |
| 488 | struct device *dev = &pdev->dev; |
| 489 | int ret, irq; |
| 490 | |
| 491 | tmdev = devm_kzalloc(dev, sizeof(*tmdev), GFP_KERNEL); |
| 492 | if (!tmdev) |
| 493 | return -ENOMEM; |
| 494 | |
| 495 | tmdev->dev = dev; |
| 496 | tmdev->chip = of_device_get_match_data(&pdev->dev); |
| 497 | if (!tmdev->chip) |
| 498 | return -EINVAL; |
| 499 | |
| 500 | platform_set_drvdata(pdev, tmdev); |
| 501 | |
| 502 | ret = sun8i_ths_resource_init(tmdev); |
| 503 | if (ret) |
| 504 | return ret; |
| 505 | |
| 506 | irq = platform_get_irq(pdev, 0); |
| 507 | if (irq < 0) |
| 508 | return irq; |
| 509 | |
| 510 | ret = tmdev->chip->init(tmdev); |
| 511 | if (ret) |
| 512 | return ret; |
| 513 | |
| 514 | ret = sun8i_ths_register(tmdev); |
| 515 | if (ret) |
| 516 | return ret; |
| 517 | |
| 518 | /* |
| 519 | * Avoid entering the interrupt handler, the thermal device is not |
| 520 | * registered yet, we deffer the registration of the interrupt to |
| 521 | * the end. |
| 522 | */ |
| 523 | ret = devm_request_threaded_irq(dev, irq, NULL, |
| 524 | sun8i_irq_thread, |
| 525 | IRQF_ONESHOT, "ths", tmdev); |
| 526 | if (ret) |
| 527 | return ret; |
| 528 | |
| 529 | return 0; |
| 530 | } |
| 531 | |
| 532 | static int sun8i_ths_remove(struct platform_device *pdev) |
| 533 | { |
| 534 | struct ths_device *tmdev = platform_get_drvdata(pdev); |
| 535 | |
| 536 | clk_disable_unprepare(tmdev->mod_clk); |
| 537 | clk_disable_unprepare(tmdev->bus_clk); |
| 538 | reset_control_assert(tmdev->reset); |
| 539 | |
| 540 | return 0; |
| 541 | } |
| 542 | |
| 543 | static const struct ths_thermal_chip sun8i_a83t_ths = { |
| 544 | .sensor_num = 3, |
| 545 | .scale = 705, |
| 546 | .offset = 191668, |
| 547 | .temp_data_base = SUN8I_THS_TEMP_DATA, |
| 548 | .calibrate = sun8i_h3_ths_calibrate, |
| 549 | .init = sun8i_h3_thermal_init, |
| 550 | .irq_ack = sun8i_h3_irq_ack, |
| 551 | .calc_temp = sun8i_ths_calc_temp, |
| 552 | }; |
| 553 | |
| 554 | static const struct ths_thermal_chip sun8i_h3_ths = { |
| 555 | .sensor_num = 1, |
| 556 | .scale = 1211, |
| 557 | .offset = 217000, |
| 558 | .has_mod_clk = true, |
| 559 | .has_bus_clk_reset = true, |
| 560 | .temp_data_base = SUN8I_THS_TEMP_DATA, |
| 561 | .calibrate = sun8i_h3_ths_calibrate, |
| 562 | .init = sun8i_h3_thermal_init, |
| 563 | .irq_ack = sun8i_h3_irq_ack, |
| 564 | .calc_temp = sun8i_ths_calc_temp, |
| 565 | }; |
| 566 | |
| 567 | static const struct ths_thermal_chip sun8i_r40_ths = { |
Yangtao Li | d818628 | 2020-01-06 17:46:38 +0000 | [diff] [blame] | 568 | .sensor_num = 2, |
Yangtao Li | dccc5c3 | 2019-12-19 09:28:17 -0800 | [diff] [blame] | 569 | .offset = 251086, |
| 570 | .scale = 1130, |
| 571 | .has_mod_clk = true, |
| 572 | .has_bus_clk_reset = true, |
| 573 | .temp_data_base = SUN8I_THS_TEMP_DATA, |
| 574 | .calibrate = sun8i_h3_ths_calibrate, |
| 575 | .init = sun8i_h3_thermal_init, |
| 576 | .irq_ack = sun8i_h3_irq_ack, |
| 577 | .calc_temp = sun8i_ths_calc_temp, |
| 578 | }; |
| 579 | |
| 580 | static const struct ths_thermal_chip sun50i_a64_ths = { |
| 581 | .sensor_num = 3, |
| 582 | .offset = 260890, |
| 583 | .scale = 1170, |
| 584 | .has_mod_clk = true, |
| 585 | .has_bus_clk_reset = true, |
| 586 | .temp_data_base = SUN8I_THS_TEMP_DATA, |
| 587 | .calibrate = sun8i_h3_ths_calibrate, |
| 588 | .init = sun8i_h3_thermal_init, |
| 589 | .irq_ack = sun8i_h3_irq_ack, |
| 590 | .calc_temp = sun8i_ths_calc_temp, |
| 591 | }; |
| 592 | |
| 593 | static const struct ths_thermal_chip sun50i_h5_ths = { |
| 594 | .sensor_num = 2, |
| 595 | .has_mod_clk = true, |
| 596 | .has_bus_clk_reset = true, |
| 597 | .temp_data_base = SUN8I_THS_TEMP_DATA, |
| 598 | .calibrate = sun8i_h3_ths_calibrate, |
| 599 | .init = sun8i_h3_thermal_init, |
| 600 | .irq_ack = sun8i_h3_irq_ack, |
| 601 | .calc_temp = sun50i_h5_calc_temp, |
| 602 | }; |
| 603 | |
| 604 | static const struct ths_thermal_chip sun50i_h6_ths = { |
| 605 | .sensor_num = 2, |
| 606 | .has_bus_clk_reset = true, |
| 607 | .ft_deviation = 7000, |
| 608 | .offset = 187744, |
| 609 | .scale = 672, |
| 610 | .temp_data_base = SUN50I_H6_THS_TEMP_DATA, |
| 611 | .calibrate = sun50i_h6_ths_calibrate, |
| 612 | .init = sun50i_h6_thermal_init, |
| 613 | .irq_ack = sun50i_h6_irq_ack, |
| 614 | .calc_temp = sun8i_ths_calc_temp, |
| 615 | }; |
| 616 | |
| 617 | static const struct of_device_id of_ths_match[] = { |
| 618 | { .compatible = "allwinner,sun8i-a83t-ths", .data = &sun8i_a83t_ths }, |
| 619 | { .compatible = "allwinner,sun8i-h3-ths", .data = &sun8i_h3_ths }, |
| 620 | { .compatible = "allwinner,sun8i-r40-ths", .data = &sun8i_r40_ths }, |
| 621 | { .compatible = "allwinner,sun50i-a64-ths", .data = &sun50i_a64_ths }, |
| 622 | { .compatible = "allwinner,sun50i-h5-ths", .data = &sun50i_h5_ths }, |
| 623 | { .compatible = "allwinner,sun50i-h6-ths", .data = &sun50i_h6_ths }, |
| 624 | { /* sentinel */ }, |
| 625 | }; |
| 626 | MODULE_DEVICE_TABLE(of, of_ths_match); |
| 627 | |
| 628 | static struct platform_driver ths_driver = { |
| 629 | .probe = sun8i_ths_probe, |
| 630 | .remove = sun8i_ths_remove, |
| 631 | .driver = { |
| 632 | .name = "sun8i-thermal", |
| 633 | .of_match_table = of_ths_match, |
| 634 | }, |
| 635 | }; |
| 636 | module_platform_driver(ths_driver); |
| 637 | |
| 638 | MODULE_DESCRIPTION("Thermal sensor driver for Allwinner SOC"); |
| 639 | MODULE_LICENSE("GPL v2"); |