drivers/thermal/hisi_thermal.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * HiSilicon thermal sensor driver
0004  *
0005  * Copyright (c) 2014-2015 HiSilicon Limited.
0006  * Copyright (c) 2014-2015 Linaro Limited.
0007  *
0008  * Xinwei Kong <kong.kongxinwei@hisilicon.com>
0009  * Leo Yan <leo.yan@linaro.org>
0010  */
0011
0012 #include <linux/cpufreq.h>
0013 #include <linux/delay.h>
0014 #include <linux/interrupt.h>
0015 #include <linux/module.h>
0016 #include <linux/platform_device.h>
0017 #include <linux/io.h>
0018 #include <linux/of_device.h>
0019
0020 #include "thermal_core.h"
0021
0022 #define HI6220_TEMP0_LAG            (0x0)
0023 #define HI6220_TEMP0_TH             (0x4)
0024 #define HI6220_TEMP0_RST_TH         (0x8)
0025 #define HI6220_TEMP0_CFG            (0xC)
0026 #define HI6220_TEMP0_CFG_SS_MSK         (0xF000)
0027 #define HI6220_TEMP0_CFG_HDAK_MSK       (0x30)
0028 #define HI6220_TEMP0_EN             (0x10)
0029 #define HI6220_TEMP0_INT_EN         (0x14)
0030 #define HI6220_TEMP0_INT_CLR            (0x18)
0031 #define HI6220_TEMP0_RST_MSK            (0x1C)
0032 #define HI6220_TEMP0_VALUE          (0x28)
0033
0034 #define HI3660_OFFSET(chan)     ((chan) * 0x40)
0035 #define HI3660_TEMP(chan)       (HI3660_OFFSET(chan) + 0x1C)
0036 #define HI3660_TH(chan)         (HI3660_OFFSET(chan) + 0x20)
0037 #define HI3660_LAG(chan)        (HI3660_OFFSET(chan) + 0x28)
0038 #define HI3660_INT_EN(chan)     (HI3660_OFFSET(chan) + 0x2C)
0039 #define HI3660_INT_CLR(chan)        (HI3660_OFFSET(chan) + 0x30)
0040
0041 #define HI6220_TEMP_BASE            (-60000)
0042 #define HI6220_TEMP_RESET           (100000)
0043 #define HI6220_TEMP_STEP            (785)
0044 #define HI6220_TEMP_LAG             (3500)
0045
0046 #define HI3660_TEMP_BASE        (-63780)
0047 #define HI3660_TEMP_STEP        (205)
0048 #define HI3660_TEMP_LAG         (4000)
0049
0050 #define HI6220_CLUSTER0_SENSOR      2
0051 #define HI6220_CLUSTER1_SENSOR      1
0052
0053 #define HI3660_LITTLE_SENSOR        0
0054 #define HI3660_BIG_SENSOR       1
0055 #define HI3660_G3D_SENSOR       2
0056 #define HI3660_MODEM_SENSOR     3
0057
0058 struct hisi_thermal_data;
0059
0060 struct hisi_thermal_sensor {
0061     struct hisi_thermal_data *data;
0062     struct thermal_zone_device *tzd;
0063     const char *irq_name;
0064     uint32_t id;
0065     uint32_t thres_temp;
0066 };
0067
0068 struct hisi_thermal_ops {
0069     int (*get_temp)(struct hisi_thermal_sensor *sensor);
0070     int (*enable_sensor)(struct hisi_thermal_sensor *sensor);
0071     int (*disable_sensor)(struct hisi_thermal_sensor *sensor);
0072     int (*irq_handler)(struct hisi_thermal_sensor *sensor);
0073     int (*probe)(struct hisi_thermal_data *data);
0074 };
0075
0076 struct hisi_thermal_data {
0077     const struct hisi_thermal_ops *ops;
0078     struct hisi_thermal_sensor *sensor;
0079     struct platform_device *pdev;
0080     struct clk *clk;
0081     void __iomem *regs;
0082     int nr_sensors;
0083 };
0084
0085 /*
0086  * The temperature computation on the tsensor is as follow:
0087  *  Unit: millidegree Celsius
0088  *  Step: 200/255 (0.7843)
0089  *  Temperature base: -60°C
0090  *
0091  * The register is programmed in temperature steps, every step is 785
0092  * millidegree and begins at -60 000 m°C
0093  *
0094  * The temperature from the steps:
0095  *
0096  *  Temp = TempBase + (steps x 785)
0097  *
0098  * and the steps from the temperature:
0099  *
0100  *  steps = (Temp - TempBase) / 785
0101  *
0102  */
0103 static inline int hi6220_thermal_step_to_temp(int step)
0104 {
0105     return HI6220_TEMP_BASE + (step * HI6220_TEMP_STEP);
0106 }
0107
0108 static inline int hi6220_thermal_temp_to_step(int temp)
0109 {
0110     return DIV_ROUND_UP(temp - HI6220_TEMP_BASE, HI6220_TEMP_STEP);
0111 }
0112
0113 /*
0114  * for Hi3660,
0115  *  Step: 189/922 (0.205)
0116  *  Temperature base: -63.780°C
0117  *
0118  * The register is programmed in temperature steps, every step is 205
0119  * millidegree and begins at -63 780 m°C
0120  */
0121 static inline int hi3660_thermal_step_to_temp(int step)
0122 {
0123     return HI3660_TEMP_BASE + step * HI3660_TEMP_STEP;
0124 }
0125
0126 static inline int hi3660_thermal_temp_to_step(int temp)
0127 {
0128     return DIV_ROUND_UP(temp - HI3660_TEMP_BASE, HI3660_TEMP_STEP);
0129 }
0130
0131 /*
0132  * The lag register contains 5 bits encoding the temperature in steps.
0133  *
0134  * Each time the temperature crosses the threshold boundary, an
0135  * interrupt is raised. It could be when the temperature is going
0136  * above the threshold or below. However, if the temperature is
0137  * fluctuating around this value due to the load, we can receive
0138  * several interrupts which may not desired.
0139  *
0140  * We can setup a temperature representing the delta between the
0141  * threshold and the current temperature when the temperature is
0142  * decreasing.
0143  *
0144  * For instance: the lag register is 5°C, the threshold is 65°C, when
0145  * the temperature reaches 65°C an interrupt is raised and when the
0146  * temperature decrease to 65°C - 5°C another interrupt is raised.
0147  *
0148  * A very short lag can lead to an interrupt storm, a long lag
0149  * increase the latency to react to the temperature changes.  In our
0150  * case, that is not really a problem as we are polling the
0151  * temperature.
0152  *
0153  * [0:4] : lag register
0154  *
0155  * The temperature is coded in steps, cf. HI6220_TEMP_STEP.
0156  *
0157  * Min : 0x00 :  0.0 °C
0158  * Max : 0x1F : 24.3 °C
0159  *
0160  * The 'value' parameter is in milliCelsius.
0161  */
0162 static inline void hi6220_thermal_set_lag(void __iomem *addr, int value)
0163 {
0164     writel(DIV_ROUND_UP(value, HI6220_TEMP_STEP) & 0x1F,
0165             addr + HI6220_TEMP0_LAG);
0166 }
0167
0168 static inline void hi6220_thermal_alarm_clear(void __iomem *addr, int value)
0169 {
0170     writel(value, addr + HI6220_TEMP0_INT_CLR);
0171 }
0172
0173 static inline void hi6220_thermal_alarm_enable(void __iomem *addr, int value)
0174 {
0175     writel(value, addr + HI6220_TEMP0_INT_EN);
0176 }
0177
0178 static inline void hi6220_thermal_alarm_set(void __iomem *addr, int temp)
0179 {
0180     writel(hi6220_thermal_temp_to_step(temp) | 0x0FFFFFF00,
0181            addr + HI6220_TEMP0_TH);
0182 }
0183
0184 static inline void hi6220_thermal_reset_set(void __iomem *addr, int temp)
0185 {
0186     writel(hi6220_thermal_temp_to_step(temp), addr + HI6220_TEMP0_RST_TH);
0187 }
0188
0189 static inline void hi6220_thermal_reset_enable(void __iomem *addr, int value)
0190 {
0191     writel(value, addr + HI6220_TEMP0_RST_MSK);
0192 }
0193
0194 static inline void hi6220_thermal_enable(void __iomem *addr, int value)
0195 {
0196     writel(value, addr + HI6220_TEMP0_EN);
0197 }
0198
0199 static inline int hi6220_thermal_get_temperature(void __iomem *addr)
0200 {
0201     return hi6220_thermal_step_to_temp(readl(addr + HI6220_TEMP0_VALUE));
0202 }
0203
0204 /*
0205  * [0:6] lag register
0206  *
0207  * The temperature is coded in steps, cf. HI3660_TEMP_STEP.
0208  *
0209  * Min : 0x00 :  0.0 °C
0210  * Max : 0x7F : 26.0 °C
0211  *
0212  */
0213 static inline void hi3660_thermal_set_lag(void __iomem *addr,
0214                       int id, int value)
0215 {
0216     writel(DIV_ROUND_UP(value, HI3660_TEMP_STEP) & 0x7F,
0217             addr + HI3660_LAG(id));
0218 }
0219
0220 static inline void hi3660_thermal_alarm_clear(void __iomem *addr,
0221                           int id, int value)
0222 {
0223     writel(value, addr + HI3660_INT_CLR(id));
0224 }
0225
0226 static inline void hi3660_thermal_alarm_enable(void __iomem *addr,
0227                            int id, int value)
0228 {
0229     writel(value, addr + HI3660_INT_EN(id));
0230 }
0231
0232 static inline void hi3660_thermal_alarm_set(void __iomem *addr,
0233                         int id, int value)
0234 {
0235     writel(value, addr + HI3660_TH(id));
0236 }
0237
0238 static inline int hi3660_thermal_get_temperature(void __iomem *addr, int id)
0239 {
0240     return hi3660_thermal_step_to_temp(readl(addr + HI3660_TEMP(id)));
0241 }
0242
0243 /*
0244  * Temperature configuration register - Sensor selection
0245  *
0246  * Bits [19:12]
0247  *
0248  * 0x0: local sensor (default)
0249  * 0x1: remote sensor 1 (ACPU cluster 1)
0250  * 0x2: remote sensor 2 (ACPU cluster 0)
0251  * 0x3: remote sensor 3 (G3D)
0252  */
0253 static inline void hi6220_thermal_sensor_select(void __iomem *addr, int sensor)
0254 {
0255     writel((readl(addr + HI6220_TEMP0_CFG) & ~HI6220_TEMP0_CFG_SS_MSK) |
0256            (sensor << 12), addr + HI6220_TEMP0_CFG);
0257 }
0258
0259 /*
0260  * Temperature configuration register - Hdak conversion polling interval
0261  *
0262  * Bits [5:4]
0263  *
0264  * 0x0 :   0.768 ms
0265  * 0x1 :   6.144 ms
0266  * 0x2 :  49.152 ms
0267  * 0x3 : 393.216 ms
0268  */
0269 static inline void hi6220_thermal_hdak_set(void __iomem *addr, int value)
0270 {
0271     writel((readl(addr + HI6220_TEMP0_CFG) & ~HI6220_TEMP0_CFG_HDAK_MSK) |
0272            (value << 4), addr + HI6220_TEMP0_CFG);
0273 }
0274
0275 static int hi6220_thermal_irq_handler(struct hisi_thermal_sensor *sensor)
0276 {
0277     struct hisi_thermal_data *data = sensor->data;
0278
0279     hi6220_thermal_alarm_clear(data->regs, 1);
0280     return 0;
0281 }
0282
0283 static int hi3660_thermal_irq_handler(struct hisi_thermal_sensor *sensor)
0284 {
0285     struct hisi_thermal_data *data = sensor->data;
0286
0287     hi3660_thermal_alarm_clear(data->regs, sensor->id, 1);
0288     return 0;
0289 }
0290
0291 static int hi6220_thermal_get_temp(struct hisi_thermal_sensor *sensor)
0292 {
0293     struct hisi_thermal_data *data = sensor->data;
0294
0295     return hi6220_thermal_get_temperature(data->regs);
0296 }
0297
0298 static int hi3660_thermal_get_temp(struct hisi_thermal_sensor *sensor)
0299 {
0300     struct hisi_thermal_data *data = sensor->data;
0301
0302     return hi3660_thermal_get_temperature(data->regs, sensor->id);
0303 }
0304
0305 static int hi6220_thermal_disable_sensor(struct hisi_thermal_sensor *sensor)
0306 {
0307     struct hisi_thermal_data *data = sensor->data;
0308
0309     /* disable sensor module */
0310     hi6220_thermal_enable(data->regs, 0);
0311     hi6220_thermal_alarm_enable(data->regs, 0);
0312     hi6220_thermal_reset_enable(data->regs, 0);
0313
0314     clk_disable_unprepare(data->clk);
0315
0316     return 0;
0317 }
0318
0319 static int hi3660_thermal_disable_sensor(struct hisi_thermal_sensor *sensor)
0320 {
0321     struct hisi_thermal_data *data = sensor->data;
0322
0323     /* disable sensor module */
0324     hi3660_thermal_alarm_enable(data->regs, sensor->id, 0);
0325     return 0;
0326 }
0327
0328 static int hi6220_thermal_enable_sensor(struct hisi_thermal_sensor *sensor)
0329 {
0330     struct hisi_thermal_data *data = sensor->data;
0331     int ret;
0332
0333     /* enable clock for tsensor */
0334     ret = clk_prepare_enable(data->clk);
0335     if (ret)
0336         return ret;
0337
0338     /* disable module firstly */
0339     hi6220_thermal_reset_enable(data->regs, 0);
0340     hi6220_thermal_enable(data->regs, 0);
0341
0342     /* select sensor id */
0343     hi6220_thermal_sensor_select(data->regs, sensor->id);
0344
0345     /* setting the hdak time */
0346     hi6220_thermal_hdak_set(data->regs, 0);
0347
0348     /* setting lag value between current temp and the threshold */
0349     hi6220_thermal_set_lag(data->regs, HI6220_TEMP_LAG);
0350
0351     /* enable for interrupt */
0352     hi6220_thermal_alarm_set(data->regs, sensor->thres_temp);
0353
0354     hi6220_thermal_reset_set(data->regs, HI6220_TEMP_RESET);
0355
0356     /* enable module */
0357     hi6220_thermal_reset_enable(data->regs, 1);
0358     hi6220_thermal_enable(data->regs, 1);
0359
0360     hi6220_thermal_alarm_clear(data->regs, 0);
0361     hi6220_thermal_alarm_enable(data->regs, 1);
0362
0363     return 0;
0364 }
0365
0366 static int hi3660_thermal_enable_sensor(struct hisi_thermal_sensor *sensor)
0367 {
0368     unsigned int value;
0369     struct hisi_thermal_data *data = sensor->data;
0370
0371     /* disable interrupt */
0372     hi3660_thermal_alarm_enable(data->regs, sensor->id, 0);
0373
0374     /* setting lag value between current temp and the threshold */
0375     hi3660_thermal_set_lag(data->regs, sensor->id, HI3660_TEMP_LAG);
0376
0377     /* set interrupt threshold */
0378     value = hi3660_thermal_temp_to_step(sensor->thres_temp);
0379     hi3660_thermal_alarm_set(data->regs, sensor->id, value);
0380
0381     /* enable interrupt */
0382     hi3660_thermal_alarm_clear(data->regs, sensor->id, 1);
0383     hi3660_thermal_alarm_enable(data->regs, sensor->id, 1);
0384
0385     return 0;
0386 }
0387
0388 static int hi6220_thermal_probe(struct hisi_thermal_data *data)
0389 {
0390     struct platform_device *pdev = data->pdev;
0391     struct device *dev = &pdev->dev;
0392     int ret;
0393
0394     data->clk = devm_clk_get(dev, "thermal_clk");
0395     if (IS_ERR(data->clk)) {
0396         ret = PTR_ERR(data->clk);
0397         if (ret != -EPROBE_DEFER)
0398             dev_err(dev, "failed to get thermal clk: %d\n", ret);
0399         return ret;
0400     }
0401
0402     data->sensor = devm_kzalloc(dev, sizeof(*data->sensor), GFP_KERNEL);
0403     if (!data->sensor)
0404         return -ENOMEM;
0405
0406     data->sensor[0].id = HI6220_CLUSTER0_SENSOR;
0407     data->sensor[0].irq_name = "tsensor_intr";
0408     data->sensor[0].data = data;
0409     data->nr_sensors = 1;
0410
0411     return 0;
0412 }
0413
0414 static int hi3660_thermal_probe(struct hisi_thermal_data *data)
0415 {
0416     struct platform_device *pdev = data->pdev;
0417     struct device *dev = &pdev->dev;
0418
0419     data->nr_sensors = 1;
0420
0421     data->sensor = devm_kzalloc(dev, sizeof(*data->sensor) *
0422                     data->nr_sensors, GFP_KERNEL);
0423     if (!data->sensor)
0424         return -ENOMEM;
0425
0426     data->sensor[0].id = HI3660_BIG_SENSOR;
0427     data->sensor[0].irq_name = "tsensor_a73";
0428     data->sensor[0].data = data;
0429
0430     data->sensor[1].id = HI3660_LITTLE_SENSOR;
0431     data->sensor[1].irq_name = "tsensor_a53";
0432     data->sensor[1].data = data;
0433
0434     return 0;
0435 }
0436
0437 static int hisi_thermal_get_temp(void *__data, int *temp)
0438 {
0439     struct hisi_thermal_sensor *sensor = __data;
0440     struct hisi_thermal_data *data = sensor->data;
0441
0442     *temp = data->ops->get_temp(sensor);
0443
0444     dev_dbg(&data->pdev->dev, "tzd=%p, id=%d, temp=%d, thres=%d\n",
0445         sensor->tzd, sensor->id, *temp, sensor->thres_temp);
0446
0447     return 0;
0448 }
0449
0450 static const struct thermal_zone_of_device_ops hisi_of_thermal_ops = {
0451     .get_temp = hisi_thermal_get_temp,
0452 };
0453
0454 static irqreturn_t hisi_thermal_alarm_irq_thread(int irq, void *dev)
0455 {
0456     struct hisi_thermal_sensor *sensor = dev;
0457     struct hisi_thermal_data *data = sensor->data;
0458     int temp = 0;
0459
0460     data->ops->irq_handler(sensor);
0461
0462     hisi_thermal_get_temp(sensor, &temp);
0463
0464     if (temp >= sensor->thres_temp) {
0465         dev_crit(&data->pdev->dev,
0466              "sensor <%d> THERMAL ALARM: %d > %d\n",
0467              sensor->id, temp, sensor->thres_temp);
0468
0469         thermal_zone_device_update(sensor->tzd,
0470                        THERMAL_EVENT_UNSPECIFIED);
0471
0472     } else {
0473         dev_crit(&data->pdev->dev,
0474              "sensor <%d> THERMAL ALARM stopped: %d < %d\n",
0475              sensor->id, temp, sensor->thres_temp);
0476     }
0477
0478     return IRQ_HANDLED;
0479 }
0480
0481 static int hisi_thermal_register_sensor(struct platform_device *pdev,
0482                     struct hisi_thermal_sensor *sensor)
0483 {
0484     int ret, i;
0485     const struct thermal_trip *trip;
0486
0487     sensor->tzd = devm_thermal_zone_of_sensor_register(&pdev->dev,
0488                                sensor->id, sensor,
0489                                &hisi_of_thermal_ops);
0490     if (IS_ERR(sensor->tzd)) {
0491         ret = PTR_ERR(sensor->tzd);
0492         sensor->tzd = NULL;
0493         dev_err(&pdev->dev, "failed to register sensor id %d: %d\n",
0494             sensor->id, ret);
0495         return ret;
0496     }
0497
0498     trip = of_thermal_get_trip_points(sensor->tzd);
0499
0500     for (i = 0; i < of_thermal_get_ntrips(sensor->tzd); i++) {
0501         if (trip[i].type == THERMAL_TRIP_PASSIVE) {
0502             sensor->thres_temp = trip[i].temperature;
0503             break;
0504         }
0505     }
0506
0507     return 0;
0508 }
0509
0510 static const struct hisi_thermal_ops hi6220_ops = {
0511     .get_temp   = hi6220_thermal_get_temp,
0512     .enable_sensor  = hi6220_thermal_enable_sensor,
0513     .disable_sensor = hi6220_thermal_disable_sensor,
0514     .irq_handler    = hi6220_thermal_irq_handler,
0515     .probe      = hi6220_thermal_probe,
0516 };
0517
0518 static const struct hisi_thermal_ops hi3660_ops = {
0519     .get_temp   = hi3660_thermal_get_temp,
0520     .enable_sensor  = hi3660_thermal_enable_sensor,
0521     .disable_sensor = hi3660_thermal_disable_sensor,
0522     .irq_handler    = hi3660_thermal_irq_handler,
0523     .probe      = hi3660_thermal_probe,
0524 };
0525
0526 static const struct of_device_id of_hisi_thermal_match[] = {
0527     {
0528         .compatible = "hisilicon,tsensor",
0529         .data = &hi6220_ops,
0530     },
0531     {
0532         .compatible = "hisilicon,hi3660-tsensor",
0533         .data = &hi3660_ops,
0534     },
0535     { /* end */ }
0536 };
0537 MODULE_DEVICE_TABLE(of, of_hisi_thermal_match);
0538
0539 static void hisi_thermal_toggle_sensor(struct hisi_thermal_sensor *sensor,
0540                        bool on)
0541 {
0542     struct thermal_zone_device *tzd = sensor->tzd;
0543
0544     if (on)
0545         thermal_zone_device_enable(tzd);
0546     else
0547         thermal_zone_device_disable(tzd);
0548 }
0549
0550 static int hisi_thermal_probe(struct platform_device *pdev)
0551 {
0552     struct hisi_thermal_data *data;
0553     struct device *dev = &pdev->dev;
0554     struct resource *res;
0555     int i, ret;
0556
0557     data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
0558     if (!data)
0559         return -ENOMEM;
0560
0561     data->pdev = pdev;
0562     platform_set_drvdata(pdev, data);
0563     data->ops = of_device_get_match_data(dev);
0564
0565     res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
0566     data->regs = devm_ioremap_resource(dev, res);
0567     if (IS_ERR(data->regs))
0568         return PTR_ERR(data->regs);
0569
0570     ret = data->ops->probe(data);
0571     if (ret)
0572         return ret;
0573
0574     for (i = 0; i < data->nr_sensors; i++) {
0575         struct hisi_thermal_sensor *sensor = &data->sensor[i];
0576
0577         ret = hisi_thermal_register_sensor(pdev, sensor);
0578         if (ret) {
0579             dev_err(dev, "failed to register thermal sensor: %d\n",
0580                 ret);
0581             return ret;
0582         }
0583
0584         ret = platform_get_irq(pdev, 0);
0585         if (ret < 0)
0586             return ret;
0587
0588         ret = devm_request_threaded_irq(dev, ret, NULL,
0589                         hisi_thermal_alarm_irq_thread,
0590                         IRQF_ONESHOT, sensor->irq_name,
0591                         sensor);
0592         if (ret < 0) {
0593             dev_err(dev, "Failed to request alarm irq: %d\n", ret);
0594             return ret;
0595         }
0596
0597         ret = data->ops->enable_sensor(sensor);
0598         if (ret) {
0599             dev_err(dev, "Failed to setup the sensor: %d\n", ret);
0600             return ret;
0601         }
0602
0603         hisi_thermal_toggle_sensor(sensor, true);
0604     }
0605
0606     return 0;
0607 }
0608
0609 static int hisi_thermal_remove(struct platform_device *pdev)
0610 {
0611     struct hisi_thermal_data *data = platform_get_drvdata(pdev);
0612     int i;
0613
0614     for (i = 0; i < data->nr_sensors; i++) {
0615         struct hisi_thermal_sensor *sensor = &data->sensor[i];
0616
0617         hisi_thermal_toggle_sensor(sensor, false);
0618         data->ops->disable_sensor(sensor);
0619     }
0620
0621     return 0;
0622 }
0623
0624 static int hisi_thermal_suspend(struct device *dev)
0625 {
0626     struct hisi_thermal_data *data = dev_get_drvdata(dev);
0627     int i;
0628
0629     for (i = 0; i < data->nr_sensors; i++)
0630         data->ops->disable_sensor(&data->sensor[i]);
0631
0632     return 0;
0633 }
0634
0635 static int hisi_thermal_resume(struct device *dev)
0636 {
0637     struct hisi_thermal_data *data = dev_get_drvdata(dev);
0638     int i, ret = 0;
0639
0640     for (i = 0; i < data->nr_sensors; i++)
0641         ret |= data->ops->enable_sensor(&data->sensor[i]);
0642
0643     return ret;
0644 }
0645
0646 static DEFINE_SIMPLE_DEV_PM_OPS(hisi_thermal_pm_ops,
0647              hisi_thermal_suspend, hisi_thermal_resume);
0648
0649 static struct platform_driver hisi_thermal_driver = {
0650     .driver = {
0651         .name       = "hisi_thermal",
0652         .pm     = pm_sleep_ptr(&hisi_thermal_pm_ops),
0653         .of_match_table = of_hisi_thermal_match,
0654     },
0655     .probe  = hisi_thermal_probe,
0656     .remove = hisi_thermal_remove,
0657 };
0658
0659 module_platform_driver(hisi_thermal_driver);
0660
0661 MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
0662 MODULE_AUTHOR("Leo Yan <leo.yan@linaro.org>");
0663 MODULE_DESCRIPTION("HiSilicon thermal driver");
0664 MODULE_LICENSE("GPL v2");