2 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
4 * Copyright (c) 2015, Fuzhou Rockchip Electronics Co., Ltd
5 * Caesar Wang <wxt@rock-chips.com>
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.
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
17 #include <linux/clk.h>
18 #include <linux/delay.h>
19 #include <linux/interrupt.h>
21 #include <linux/module.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>
28 #include <linux/pinctrl/consumer.h>
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.
41 * The system Temperature Sensors tshut(tshut) polarity
42 * the bit 8 is tshut polarity.
43 * 0: low active, 1: high active
51 * The system has two Temperature Sensors.
52 * sensor0 is for CPU, and sensor1 is for GPU.
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)
70 * The max sensors is two in rockchip SoCs.
71 * Two sensors: CPU and GPU sensor.
73 #define SOC_MAX_SENSORS 2
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)
82 struct chip_tsadc_table {
83 const struct tsadc_table *id;
86 enum adc_sort_mode mode;
89 struct rockchip_tsadc_chip {
90 /* The sensor id of chip correspond to the ADC channel */
91 int chn_id[SOC_MAX_SENSORS];
94 /* The hardware-controlled tshut property */
96 enum tshut_mode tshut_mode;
97 enum tshut_polarity tshut_polarity;
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);
104 /* Per-sensor methods */
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,
108 int chn, void __iomem *reg, int temp);
109 void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m);
111 /* Per-table methods */
112 struct chip_tsadc_table table;
115 struct rockchip_thermal_sensor {
116 struct rockchip_thermal_data *thermal;
117 struct thermal_zone_device *tzd;
121 struct rockchip_thermal_data {
122 const struct rockchip_tsadc_chip *chip;
123 struct platform_device *pdev;
124 struct reset_control *reset;
126 struct rockchip_thermal_sensor sensors[SOC_MAX_SENSORS];
134 enum tshut_mode tshut_mode;
135 enum tshut_polarity tshut_polarity;
138 /* TSADC Sensor info define: */
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
149 #define TSADCV2_AUTO_EN BIT(0)
150 #define TSADCV2_AUTO_SRC_EN(chn) BIT(4 + (chn))
151 #define TSADCV2_AUTO_TSHUT_POLARITY_HIGH BIT(8)
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))
157 #define TSADCV1_INT_PD_CLEAR_MASK ~BIT(16)
158 #define TSADCV2_INT_PD_CLEAR_MASK ~BIT(8)
160 #define TSADCV2_DATA_MASK 0xfff
161 #define TSADCV3_DATA_MASK 0x3ff
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 */
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.
180 static const struct tsadc_table v1_code_table[] = {
181 {TSADCV3_DATA_MASK, -40000},
218 static const struct tsadc_table v2_code_table[] = {
219 {TSADCV2_DATA_MASK, -40000},
256 static const struct tsadc_table v3_code_table[] = {
292 {TSADCV3_DATA_MASK, 125000},
295 static const struct tsadc_table v4_code_table[] = {
296 {TSADCV3_DATA_MASK, -40000},
333 static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table,
339 high = table.length - 1;
340 mid = (high + low) / 2;
342 if (temp < table.id[low].temp || temp > table.id[high].temp)
345 while (low <= high) {
346 if (temp == table.id[mid].temp)
347 return table.id[mid].code;
348 else if (temp < table.id[mid].temp)
352 mid = (low + high) / 2;
358 static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code,
361 unsigned int low = 1;
362 unsigned int high = table.length - 1;
363 unsigned int mid = (low + high) / 2;
367 WARN_ON(table.length < 2);
369 switch (table.mode) {
371 code &= table.data_mask;
372 if (code < table.id[high].code)
373 return -EAGAIN; /* Incorrect reading */
375 while (low <= high) {
376 if (code >= table.id[mid].code &&
377 code < table.id[mid - 1].code)
379 else if (code < table.id[mid].code)
384 mid = (low + high) / 2;
388 code &= table.data_mask;
389 if (code < table.id[low].code)
390 return -EAGAIN; /* Incorrect reading */
392 while (low <= high) {
393 if (code >= table.id[mid - 1].code &&
394 code < table.id[mid].code)
396 else if (code > table.id[mid].code)
401 mid = (low + high) / 2;
405 pr_err("Invalid the conversion table\n");
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.
414 num = table.id[mid].temp - table.id[mid - 1].temp;
415 num *= abs(table.id[mid - 1].code - code);
416 denom = abs(table.id[mid - 1].code - table.id[mid].code);
417 *temp = table.id[mid - 1].temp + (num / denom);
423 * rk_tsadcv2_initialize - initialize TASDC Controller.
425 * (1) Set TSADC_V2_AUTO_PERIOD:
426 * Configure the interleave between every two accessing of
427 * TSADC in normal operation.
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.
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.
437 static void rk_tsadcv2_initialize(void __iomem *regs,
438 enum tshut_polarity tshut_polarity)
440 if (tshut_polarity == TSHUT_HIGH_ACTIVE)
441 writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
442 regs + TSADCV2_AUTO_CON);
444 writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
445 regs + TSADCV2_AUTO_CON);
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);
456 static void rk_tsadcv1_irq_ack(void __iomem *regs)
460 val = readl_relaxed(regs + TSADCV2_INT_PD);
461 writel_relaxed(val & TSADCV1_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD);
464 static void rk_tsadcv2_irq_ack(void __iomem *regs)
468 val = readl_relaxed(regs + TSADCV2_INT_PD);
469 writel_relaxed(val & TSADCV2_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD);
472 static void rk_tsadcv2_control(void __iomem *regs, bool enable)
476 val = readl_relaxed(regs + TSADCV2_AUTO_CON);
478 val |= TSADCV2_AUTO_EN;
480 val &= ~TSADCV2_AUTO_EN;
482 writel_relaxed(val, regs + TSADCV2_AUTO_CON);
485 static int rk_tsadcv2_get_temp(struct chip_tsadc_table table,
486 int chn, void __iomem *regs, int *temp)
490 val = readl_relaxed(regs + TSADCV2_DATA(chn));
492 return rk_tsadcv2_code_to_temp(table, val, temp);
495 static void rk_tsadcv2_tshut_temp(struct chip_tsadc_table table,
496 int chn, void __iomem *regs, int temp)
498 u32 tshut_value, val;
500 tshut_value = rk_tsadcv2_temp_to_code(table, temp);
501 writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn));
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);
508 static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
509 enum tshut_mode mode)
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);
518 val &= ~TSADCV2_SHUT_2GPIO_SRC_EN(chn);
519 val |= TSADCV2_SHUT_2CRU_SRC_EN(chn);
522 writel_relaxed(val, regs + TSADCV2_INT_EN);
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 */
529 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
530 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
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,
542 .length = ARRAY_SIZE(v1_code_table),
543 .data_mask = TSADCV3_DATA_MASK,
544 .mode = ADC_DECREMENT,
548 static const struct rockchip_tsadc_chip rk3288_tsadc_data = {
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 */
553 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
554 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
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,
566 .length = ARRAY_SIZE(v2_code_table),
567 .data_mask = TSADCV2_DATA_MASK,
568 .mode = ADC_DECREMENT,
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 */
577 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
578 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
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,
590 .length = ARRAY_SIZE(v3_code_table),
591 .data_mask = TSADCV3_DATA_MASK,
592 .mode = ADC_INCREMENT,
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 */
601 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
602 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
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,
614 .length = ARRAY_SIZE(v4_code_table),
615 .data_mask = TSADCV3_DATA_MASK,
616 .mode = ADC_DECREMENT,
620 static const struct of_device_id of_rockchip_thermal_match[] = {
622 .compatible = "rockchip,rk3228-tsadc",
623 .data = (void *)&rk3228_tsadc_data,
626 .compatible = "rockchip,rk3288-tsadc",
627 .data = (void *)&rk3288_tsadc_data,
630 .compatible = "rockchip,rk3368-tsadc",
631 .data = (void *)&rk3368_tsadc_data,
634 .compatible = "rockchip,rk3399-tsadc",
635 .data = (void *)&rk3399_tsadc_data,
639 MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match);
642 rockchip_thermal_toggle_sensor(struct rockchip_thermal_sensor *sensor, bool on)
644 struct thermal_zone_device *tzd = sensor->tzd;
646 tzd->ops->set_mode(tzd,
647 on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED);
650 static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev)
652 struct rockchip_thermal_data *thermal = dev;
655 dev_dbg(&thermal->pdev->dev, "thermal alarm\n");
657 thermal->chip->irq_ack(thermal->regs);
659 for (i = 0; i < thermal->chip->chn_num; i++)
660 thermal_zone_device_update(thermal->sensors[i].tzd);
665 static int rockchip_thermal_get_temp(void *_sensor, int *out_temp)
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;
672 retval = tsadc->get_temp(tsadc->table,
673 sensor->id, thermal->regs, out_temp);
674 dev_dbg(&thermal->pdev->dev, "sensor %d - temp: %d, retval: %d\n",
675 sensor->id, *out_temp, retval);
680 static const struct thermal_zone_of_device_ops rockchip_of_thermal_ops = {
681 .get_temp = rockchip_thermal_get_temp,
684 static int rockchip_configure_from_dt(struct device *dev,
685 struct device_node *np,
686 struct rockchip_thermal_data *thermal)
688 u32 shut_temp, tshut_mode, tshut_polarity;
690 if (of_property_read_u32(np, "rockchip,hw-tshut-temp", &shut_temp)) {
692 "Missing tshut temp property, using default %d\n",
693 thermal->chip->tshut_temp);
694 thermal->tshut_temp = thermal->chip->tshut_temp;
696 if (shut_temp > INT_MAX) {
697 dev_err(dev, "Invalid tshut temperature specified: %d\n",
701 thermal->tshut_temp = shut_temp;
704 if (of_property_read_u32(np, "rockchip,hw-tshut-mode", &tshut_mode)) {
706 "Missing tshut mode property, using default (%s)\n",
707 thermal->chip->tshut_mode == TSHUT_MODE_GPIO ?
709 thermal->tshut_mode = thermal->chip->tshut_mode;
711 thermal->tshut_mode = tshut_mode;
714 if (thermal->tshut_mode > 1) {
715 dev_err(dev, "Invalid tshut mode specified: %d\n",
716 thermal->tshut_mode);
720 if (of_property_read_u32(np, "rockchip,hw-tshut-polarity",
723 "Missing tshut-polarity property, using default (%s)\n",
724 thermal->chip->tshut_polarity == TSHUT_LOW_ACTIVE ?
726 thermal->tshut_polarity = thermal->chip->tshut_polarity;
728 thermal->tshut_polarity = tshut_polarity;
731 if (thermal->tshut_polarity > 1) {
732 dev_err(dev, "Invalid tshut-polarity specified: %d\n",
733 thermal->tshut_polarity);
741 rockchip_thermal_register_sensor(struct platform_device *pdev,
742 struct rockchip_thermal_data *thermal,
743 struct rockchip_thermal_sensor *sensor,
746 const struct rockchip_tsadc_chip *tsadc = thermal->chip;
749 tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode);
750 tsadc->set_tshut_temp(tsadc->table, id, thermal->regs,
751 thermal->tshut_temp);
753 sensor->thermal = thermal;
755 sensor->tzd = thermal_zone_of_sensor_register(&pdev->dev, id, sensor,
756 &rockchip_of_thermal_ops);
757 if (IS_ERR(sensor->tzd)) {
758 error = PTR_ERR(sensor->tzd);
759 dev_err(&pdev->dev, "failed to register sensor %d: %d\n",
768 * Reset TSADC Controller, reset all tsadc registers.
770 static void rockchip_thermal_reset_controller(struct reset_control *reset)
772 reset_control_assert(reset);
773 usleep_range(10, 20);
774 reset_control_deassert(reset);
777 static int rockchip_thermal_probe(struct platform_device *pdev)
779 struct device_node *np = pdev->dev.of_node;
780 struct rockchip_thermal_data *thermal;
781 const struct of_device_id *match;
782 struct resource *res;
787 match = of_match_node(of_rockchip_thermal_match, np);
791 irq = platform_get_irq(pdev, 0);
793 dev_err(&pdev->dev, "no irq resource?\n");
797 thermal = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_thermal_data),
802 thermal->pdev = pdev;
804 thermal->chip = (const struct rockchip_tsadc_chip *)match->data;
808 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
809 thermal->regs = devm_ioremap_resource(&pdev->dev, res);
810 if (IS_ERR(thermal->regs))
811 return PTR_ERR(thermal->regs);
813 thermal->reset = devm_reset_control_get(&pdev->dev, "tsadc-apb");
814 if (IS_ERR(thermal->reset)) {
815 error = PTR_ERR(thermal->reset);
816 dev_err(&pdev->dev, "failed to get tsadc reset: %d\n", error);
820 thermal->clk = devm_clk_get(&pdev->dev, "tsadc");
821 if (IS_ERR(thermal->clk)) {
822 error = PTR_ERR(thermal->clk);
823 dev_err(&pdev->dev, "failed to get tsadc clock: %d\n", error);
827 thermal->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
828 if (IS_ERR(thermal->pclk)) {
829 error = PTR_ERR(thermal->pclk);
830 dev_err(&pdev->dev, "failed to get apb_pclk clock: %d\n",
835 error = clk_prepare_enable(thermal->clk);
837 dev_err(&pdev->dev, "failed to enable converter clock: %d\n",
842 error = clk_prepare_enable(thermal->pclk);
844 dev_err(&pdev->dev, "failed to enable pclk: %d\n", error);
845 goto err_disable_clk;
848 rockchip_thermal_reset_controller(thermal->reset);
850 error = rockchip_configure_from_dt(&pdev->dev, np, thermal);
852 dev_err(&pdev->dev, "failed to parse device tree data: %d\n",
854 goto err_disable_pclk;
857 thermal->chip->initialize(thermal->regs, thermal->tshut_polarity);
859 for (i = 0; i < thermal->chip->chn_num; i++) {
860 error = rockchip_thermal_register_sensor(pdev, thermal,
861 &thermal->sensors[i],
862 thermal->chip->chn_id[i]);
865 "failed to register sensor[%d] : error = %d\n",
867 for (j = 0; j < i; j++)
868 thermal_zone_of_sensor_unregister(&pdev->dev,
869 thermal->sensors[j].tzd);
870 goto err_disable_pclk;
874 error = devm_request_threaded_irq(&pdev->dev, irq, NULL,
875 &rockchip_thermal_alarm_irq_thread,
877 "rockchip_thermal", thermal);
880 "failed to request tsadc irq: %d\n", error);
881 goto err_unregister_sensor;
884 thermal->chip->control(thermal->regs, true);
886 for (i = 0; i < thermal->chip->chn_num; i++)
887 rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
889 platform_set_drvdata(pdev, thermal);
893 err_unregister_sensor:
895 thermal_zone_of_sensor_unregister(&pdev->dev,
896 thermal->sensors[i].tzd);
899 clk_disable_unprepare(thermal->pclk);
901 clk_disable_unprepare(thermal->clk);
906 static int rockchip_thermal_remove(struct platform_device *pdev)
908 struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
911 for (i = 0; i < thermal->chip->chn_num; i++) {
912 struct rockchip_thermal_sensor *sensor = &thermal->sensors[i];
914 rockchip_thermal_toggle_sensor(sensor, false);
915 thermal_zone_of_sensor_unregister(&pdev->dev, sensor->tzd);
918 thermal->chip->control(thermal->regs, false);
920 clk_disable_unprepare(thermal->pclk);
921 clk_disable_unprepare(thermal->clk);
926 static int __maybe_unused rockchip_thermal_suspend(struct device *dev)
928 struct platform_device *pdev = to_platform_device(dev);
929 struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
932 for (i = 0; i < thermal->chip->chn_num; i++)
933 rockchip_thermal_toggle_sensor(&thermal->sensors[i], false);
935 thermal->chip->control(thermal->regs, false);
937 clk_disable(thermal->pclk);
938 clk_disable(thermal->clk);
940 pinctrl_pm_select_sleep_state(dev);
945 static int __maybe_unused rockchip_thermal_resume(struct device *dev)
947 struct platform_device *pdev = to_platform_device(dev);
948 struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
952 error = clk_enable(thermal->clk);
956 error = clk_enable(thermal->pclk);
960 rockchip_thermal_reset_controller(thermal->reset);
962 thermal->chip->initialize(thermal->regs, thermal->tshut_polarity);
964 for (i = 0; i < thermal->chip->chn_num; i++) {
965 int id = thermal->sensors[i].id;
967 thermal->chip->set_tshut_mode(id, thermal->regs,
968 thermal->tshut_mode);
969 thermal->chip->set_tshut_temp(thermal->chip->table,
971 thermal->tshut_temp);
974 thermal->chip->control(thermal->regs, true);
976 for (i = 0; i < thermal->chip->chn_num; i++)
977 rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
979 pinctrl_pm_select_default_state(dev);
984 static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops,
985 rockchip_thermal_suspend, rockchip_thermal_resume);
987 static struct platform_driver rockchip_thermal_driver = {
989 .name = "rockchip-thermal",
990 .pm = &rockchip_thermal_pm_ops,
991 .of_match_table = of_rockchip_thermal_match,
993 .probe = rockchip_thermal_probe,
994 .remove = rockchip_thermal_remove,
997 module_platform_driver(rockchip_thermal_driver);
999 MODULE_DESCRIPTION("ROCKCHIP THERMAL Driver");
1000 MODULE_AUTHOR("Rockchip, Inc.");
1001 MODULE_LICENSE("GPL v2");
1002 MODULE_ALIAS("platform:rockchip-thermal");