1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2014-2016, Fuzhou Rockchip Electronics Co., Ltd
4 * Caesar Wang <wxt@rock-chips.com>
8 #include <linux/delay.h>
9 #include <linux/interrupt.h>
11 #include <linux/module.h>
13 #include <linux/of_address.h>
14 #include <linux/of_irq.h>
15 #include <linux/platform_device.h>
16 #include <linux/regmap.h>
17 #include <linux/reset.h>
18 #include <linux/thermal.h>
19 #include <linux/mfd/syscon.h>
20 #include <linux/pinctrl/consumer.h>
23 * If the temperature over a period of time High,
24 * the resulting TSHUT gave CRU module,let it reset the entire chip,
25 * or via GPIO give PMIC.
33 * The system Temperature Sensors tshut(tshut) polarity
34 * the bit 8 is tshut polarity.
35 * 0: low active, 1: high active
43 * The system has two Temperature Sensors.
44 * sensor0 is for CPU, and sensor1 is for GPU.
52 * The conversion table has the adc value and temperature.
53 * ADC_DECREMENT: the adc value is of diminishing.(e.g. rk3288_code_table)
54 * ADC_INCREMENT: the adc value is incremental.(e.g. rk3368_code_table)
62 * The max sensors is two in rockchip SoCs.
63 * Two sensors: CPU and GPU sensor.
65 #define SOC_MAX_SENSORS 2
68 * struct chip_tsadc_table - hold information about chip-specific differences
69 * @id: conversion table
70 * @length: size of conversion table
71 * @data_mask: mask to apply on data inputs
72 * @mode: sort mode of this adc variant (incrementing or decrementing)
74 struct chip_tsadc_table {
75 const struct tsadc_table *id;
78 enum adc_sort_mode mode;
82 * struct rockchip_tsadc_chip - hold the private data of tsadc chip
83 * @chn_id[SOC_MAX_SENSORS]: the sensor id of chip correspond to the channel
84 * @chn_num: the channel number of tsadc chip
85 * @tshut_temp: the hardware-controlled shutdown temperature value
86 * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO)
87 * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH)
88 * @initialize: SoC special initialize tsadc controller method
89 * @irq_ack: clear the interrupt
90 * @get_temp: get the temperature
91 * @set_alarm_temp: set the high temperature interrupt
92 * @set_tshut_temp: set the hardware-controlled shutdown temperature
93 * @set_tshut_mode: set the hardware-controlled shutdown mode
94 * @table: the chip-specific conversion table
96 struct rockchip_tsadc_chip {
97 /* The sensor id of chip correspond to the ADC channel */
98 int chn_id[SOC_MAX_SENSORS];
101 /* The hardware-controlled tshut property */
103 enum tshut_mode tshut_mode;
104 enum tshut_polarity tshut_polarity;
106 /* Chip-wide methods */
107 void (*initialize)(struct regmap *grf,
108 void __iomem *reg, enum tshut_polarity p);
109 void (*irq_ack)(void __iomem *reg);
110 void (*control)(void __iomem *reg, bool on);
112 /* Per-sensor methods */
113 int (*get_temp)(const struct chip_tsadc_table *table,
114 int chn, void __iomem *reg, int *temp);
115 int (*set_alarm_temp)(const struct chip_tsadc_table *table,
116 int chn, void __iomem *reg, int temp);
117 int (*set_tshut_temp)(const struct chip_tsadc_table *table,
118 int chn, void __iomem *reg, int temp);
119 void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m);
121 /* Per-table methods */
122 struct chip_tsadc_table table;
126 * struct rockchip_thermal_sensor - hold the information of thermal sensor
127 * @thermal: pointer to the platform/configuration data
128 * @tzd: pointer to a thermal zone
129 * @id: identifier of the thermal sensor
131 struct rockchip_thermal_sensor {
132 struct rockchip_thermal_data *thermal;
133 struct thermal_zone_device *tzd;
138 * struct rockchip_thermal_data - hold the private data of thermal driver
139 * @chip: pointer to the platform/configuration data
140 * @pdev: platform device of thermal
141 * @reset: the reset controller of tsadc
142 * @sensors[SOC_MAX_SENSORS]: the thermal sensor
143 * @clk: the controller clock is divided by the exteral 24MHz
144 * @pclk: the advanced peripherals bus clock
145 * @grf: the general register file will be used to do static set by software
146 * @regs: the base address of tsadc controller
147 * @tshut_temp: the hardware-controlled shutdown temperature value
148 * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO)
149 * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH)
151 struct rockchip_thermal_data {
152 const struct rockchip_tsadc_chip *chip;
153 struct platform_device *pdev;
154 struct reset_control *reset;
156 struct rockchip_thermal_sensor sensors[SOC_MAX_SENSORS];
165 enum tshut_mode tshut_mode;
166 enum tshut_polarity tshut_polarity;
170 * TSADC Sensor Register description:
172 * TSADCV2_* are used for RK3288 SoCs, the other chips can reuse it.
173 * TSADCV3_* are used for newer SoCs than RK3288. (e.g: RK3228, RK3399)
176 #define TSADCV2_USER_CON 0x00
177 #define TSADCV2_AUTO_CON 0x04
178 #define TSADCV2_INT_EN 0x08
179 #define TSADCV2_INT_PD 0x0c
180 #define TSADCV2_DATA(chn) (0x20 + (chn) * 0x04)
181 #define TSADCV2_COMP_INT(chn) (0x30 + (chn) * 0x04)
182 #define TSADCV2_COMP_SHUT(chn) (0x40 + (chn) * 0x04)
183 #define TSADCV2_HIGHT_INT_DEBOUNCE 0x60
184 #define TSADCV2_HIGHT_TSHUT_DEBOUNCE 0x64
185 #define TSADCV2_AUTO_PERIOD 0x68
186 #define TSADCV2_AUTO_PERIOD_HT 0x6c
188 #define TSADCV2_AUTO_EN BIT(0)
189 #define TSADCV2_AUTO_SRC_EN(chn) BIT(4 + (chn))
190 #define TSADCV2_AUTO_TSHUT_POLARITY_HIGH BIT(8)
192 #define TSADCV3_AUTO_Q_SEL_EN BIT(1)
194 #define TSADCV2_INT_SRC_EN(chn) BIT(chn)
195 #define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn))
196 #define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn))
198 #define TSADCV2_INT_PD_CLEAR_MASK ~BIT(8)
199 #define TSADCV3_INT_PD_CLEAR_MASK ~BIT(16)
201 #define TSADCV2_DATA_MASK 0xfff
202 #define TSADCV3_DATA_MASK 0x3ff
204 #define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT 4
205 #define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT 4
206 #define TSADCV2_AUTO_PERIOD_TIME 250 /* 250ms */
207 #define TSADCV2_AUTO_PERIOD_HT_TIME 50 /* 50ms */
208 #define TSADCV3_AUTO_PERIOD_TIME 1875 /* 2.5ms */
209 #define TSADCV3_AUTO_PERIOD_HT_TIME 1875 /* 2.5ms */
211 #define TSADCV2_USER_INTER_PD_SOC 0x340 /* 13 clocks */
213 #define GRF_SARADC_TESTBIT 0x0e644
214 #define GRF_TSADC_TESTBIT_L 0x0e648
215 #define GRF_TSADC_TESTBIT_H 0x0e64c
217 #define PX30_GRF_SOC_CON2 0x0408
219 #define GRF_SARADC_TESTBIT_ON (0x10001 << 2)
220 #define GRF_TSADC_TESTBIT_H_ON (0x10001 << 2)
221 #define GRF_TSADC_VCM_EN_L (0x10001 << 7)
222 #define GRF_TSADC_VCM_EN_H (0x10001 << 7)
224 #define GRF_CON_TSADC_CH_INV (0x10001 << 1)
227 * struct tsadc_table - code to temperature conversion table
228 * @code: the value of adc channel
229 * @temp: the temperature
231 * code to temperature mapping of the temperature sensor is a piece wise linear
232 * curve.Any temperature, code faling between to 2 give temperatures can be
233 * linearly interpolated.
234 * Code to Temperature mapping should be updated based on manufacturer results.
241 static const struct tsadc_table rv1108_table[] = {
277 {TSADCV2_DATA_MASK, 125000},
280 static const struct tsadc_table rk3228_code_table[] = {
316 {TSADCV2_DATA_MASK, 125000},
319 static const struct tsadc_table rk3288_code_table[] = {
320 {TSADCV2_DATA_MASK, -40000},
358 static const struct tsadc_table rk3328_code_table[] = {
393 {TSADCV2_DATA_MASK, 125000},
396 static const struct tsadc_table rk3368_code_table[] = {
432 {TSADCV3_DATA_MASK, 125000},
435 static const struct tsadc_table rk3399_code_table[] = {
471 {TSADCV3_DATA_MASK, 125000},
474 static u32 rk_tsadcv2_temp_to_code(const struct chip_tsadc_table *table,
480 u32 error = table->data_mask;
483 high = (table->length - 1) - 1; /* ignore the last check for table */
484 mid = (high + low) / 2;
486 /* Return mask code data when the temp is over table range */
487 if (temp < table->id[low].temp || temp > table->id[high].temp)
490 while (low <= high) {
491 if (temp == table->id[mid].temp)
492 return table->id[mid].code;
493 else if (temp < table->id[mid].temp)
497 mid = (low + high) / 2;
501 * The conversion code granularity provided by the table. Let's
502 * assume that the relationship between temperature and
503 * analog value between 2 table entries is linear and interpolate
504 * to produce less granular result.
506 num = abs(table->id[mid + 1].code - table->id[mid].code);
507 num *= temp - table->id[mid].temp;
508 denom = table->id[mid + 1].temp - table->id[mid].temp;
510 switch (table->mode) {
512 return table->id[mid].code - (num / denom);
514 return table->id[mid].code + (num / denom);
516 pr_err("%s: unknown table mode: %d\n", __func__, table->mode);
521 pr_err("%s: invalid temperature, temp=%d error=%d\n",
522 __func__, temp, error);
526 static int rk_tsadcv2_code_to_temp(const struct chip_tsadc_table *table,
529 unsigned int low = 1;
530 unsigned int high = table->length - 1;
531 unsigned int mid = (low + high) / 2;
535 WARN_ON(table->length < 2);
537 switch (table->mode) {
539 code &= table->data_mask;
540 if (code <= table->id[high].code)
541 return -EAGAIN; /* Incorrect reading */
543 while (low <= high) {
544 if (code >= table->id[mid].code &&
545 code < table->id[mid - 1].code)
547 else if (code < table->id[mid].code)
552 mid = (low + high) / 2;
556 code &= table->data_mask;
557 if (code < table->id[low].code)
558 return -EAGAIN; /* Incorrect reading */
560 while (low <= high) {
561 if (code <= table->id[mid].code &&
562 code > table->id[mid - 1].code)
564 else if (code > table->id[mid].code)
569 mid = (low + high) / 2;
573 pr_err("%s: unknown table mode: %d\n", __func__, table->mode);
578 * The 5C granularity provided by the table is too much. Let's
579 * assume that the relationship between sensor readings and
580 * temperature between 2 table entries is linear and interpolate
581 * to produce less granular result.
583 num = table->id[mid].temp - table->id[mid - 1].temp;
584 num *= abs(table->id[mid - 1].code - code);
585 denom = abs(table->id[mid - 1].code - table->id[mid].code);
586 *temp = table->id[mid - 1].temp + (num / denom);
592 * rk_tsadcv2_initialize - initialize TASDC Controller.
594 * (1) Set TSADC_V2_AUTO_PERIOD:
595 * Configure the interleave between every two accessing of
596 * TSADC in normal operation.
598 * (2) Set TSADCV2_AUTO_PERIOD_HT:
599 * Configure the interleave between every two accessing of
600 * TSADC after the temperature is higher than COM_SHUT or COM_INT.
602 * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE:
603 * If the temperature is higher than COMP_INT or COMP_SHUT for
604 * "debounce" times, TSADC controller will generate interrupt or TSHUT.
606 static void rk_tsadcv2_initialize(struct regmap *grf, void __iomem *regs,
607 enum tshut_polarity tshut_polarity)
609 if (tshut_polarity == TSHUT_HIGH_ACTIVE)
610 writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
611 regs + TSADCV2_AUTO_CON);
613 writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
614 regs + TSADCV2_AUTO_CON);
616 writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, regs + TSADCV2_AUTO_PERIOD);
617 writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT,
618 regs + TSADCV2_HIGHT_INT_DEBOUNCE);
619 writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME,
620 regs + TSADCV2_AUTO_PERIOD_HT);
621 writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT,
622 regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE);
626 * rk_tsadcv3_initialize - initialize TASDC Controller.
628 * (1) The tsadc control power sequence.
630 * (2) Set TSADC_V2_AUTO_PERIOD:
631 * Configure the interleave between every two accessing of
632 * TSADC in normal operation.
634 * (2) Set TSADCV2_AUTO_PERIOD_HT:
635 * Configure the interleave between every two accessing of
636 * TSADC after the temperature is higher than COM_SHUT or COM_INT.
638 * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE:
639 * If the temperature is higher than COMP_INT or COMP_SHUT for
640 * "debounce" times, TSADC controller will generate interrupt or TSHUT.
642 static void rk_tsadcv3_initialize(struct regmap *grf, void __iomem *regs,
643 enum tshut_polarity tshut_polarity)
645 /* The tsadc control power sequence */
647 /* Set interleave value to workround ic time sync issue */
648 writel_relaxed(TSADCV2_USER_INTER_PD_SOC, regs +
651 writel_relaxed(TSADCV2_AUTO_PERIOD_TIME,
652 regs + TSADCV2_AUTO_PERIOD);
653 writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT,
654 regs + TSADCV2_HIGHT_INT_DEBOUNCE);
655 writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME,
656 regs + TSADCV2_AUTO_PERIOD_HT);
657 writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT,
658 regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE);
661 /* Enable the voltage common mode feature */
662 regmap_write(grf, GRF_TSADC_TESTBIT_L, GRF_TSADC_VCM_EN_L);
663 regmap_write(grf, GRF_TSADC_TESTBIT_H, GRF_TSADC_VCM_EN_H);
665 usleep_range(15, 100); /* The spec note says at least 15 us */
666 regmap_write(grf, GRF_SARADC_TESTBIT, GRF_SARADC_TESTBIT_ON);
667 regmap_write(grf, GRF_TSADC_TESTBIT_H, GRF_TSADC_TESTBIT_H_ON);
668 usleep_range(90, 200); /* The spec note says at least 90 us */
670 writel_relaxed(TSADCV3_AUTO_PERIOD_TIME,
671 regs + TSADCV2_AUTO_PERIOD);
672 writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT,
673 regs + TSADCV2_HIGHT_INT_DEBOUNCE);
674 writel_relaxed(TSADCV3_AUTO_PERIOD_HT_TIME,
675 regs + TSADCV2_AUTO_PERIOD_HT);
676 writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT,
677 regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE);
680 if (tshut_polarity == TSHUT_HIGH_ACTIVE)
681 writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
682 regs + TSADCV2_AUTO_CON);
684 writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
685 regs + TSADCV2_AUTO_CON);
688 static void rk_tsadcv4_initialize(struct regmap *grf, void __iomem *regs,
689 enum tshut_polarity tshut_polarity)
691 rk_tsadcv2_initialize(grf, regs, tshut_polarity);
692 regmap_write(grf, PX30_GRF_SOC_CON2, GRF_CON_TSADC_CH_INV);
695 static void rk_tsadcv2_irq_ack(void __iomem *regs)
699 val = readl_relaxed(regs + TSADCV2_INT_PD);
700 writel_relaxed(val & TSADCV2_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD);
703 static void rk_tsadcv3_irq_ack(void __iomem *regs)
707 val = readl_relaxed(regs + TSADCV2_INT_PD);
708 writel_relaxed(val & TSADCV3_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD);
711 static void rk_tsadcv2_control(void __iomem *regs, bool enable)
715 val = readl_relaxed(regs + TSADCV2_AUTO_CON);
717 val |= TSADCV2_AUTO_EN;
719 val &= ~TSADCV2_AUTO_EN;
721 writel_relaxed(val, regs + TSADCV2_AUTO_CON);
725 * rk_tsadcv3_control - the tsadc controller is enabled or disabled.
727 * NOTE: TSADC controller works at auto mode, and some SoCs need set the
728 * tsadc_q_sel bit on TSADCV2_AUTO_CON[1]. The (1024 - tsadc_q) as output
729 * adc value if setting this bit to enable.
731 static void rk_tsadcv3_control(void __iomem *regs, bool enable)
735 val = readl_relaxed(regs + TSADCV2_AUTO_CON);
737 val |= TSADCV2_AUTO_EN | TSADCV3_AUTO_Q_SEL_EN;
739 val &= ~TSADCV2_AUTO_EN;
741 writel_relaxed(val, regs + TSADCV2_AUTO_CON);
744 static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table,
745 int chn, void __iomem *regs, int *temp)
749 val = readl_relaxed(regs + TSADCV2_DATA(chn));
751 return rk_tsadcv2_code_to_temp(table, val, temp);
754 static int rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table,
755 int chn, void __iomem *regs, int temp)
761 * In some cases, some sensors didn't need the trip points, the
762 * set_trips will pass {-INT_MAX, INT_MAX} to trigger tsadc alarm
763 * in the end, ignore this case and disable the high temperature
766 if (temp == INT_MAX) {
767 int_clr = readl_relaxed(regs + TSADCV2_INT_EN);
768 int_clr &= ~TSADCV2_INT_SRC_EN(chn);
769 writel_relaxed(int_clr, regs + TSADCV2_INT_EN);
773 /* Make sure the value is valid */
774 alarm_value = rk_tsadcv2_temp_to_code(table, temp);
775 if (alarm_value == table->data_mask)
778 writel_relaxed(alarm_value & table->data_mask,
779 regs + TSADCV2_COMP_INT(chn));
781 int_en = readl_relaxed(regs + TSADCV2_INT_EN);
782 int_en |= TSADCV2_INT_SRC_EN(chn);
783 writel_relaxed(int_en, regs + TSADCV2_INT_EN);
788 static int rk_tsadcv2_tshut_temp(const struct chip_tsadc_table *table,
789 int chn, void __iomem *regs, int temp)
791 u32 tshut_value, val;
793 /* Make sure the value is valid */
794 tshut_value = rk_tsadcv2_temp_to_code(table, temp);
795 if (tshut_value == table->data_mask)
798 writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn));
800 /* TSHUT will be valid */
801 val = readl_relaxed(regs + TSADCV2_AUTO_CON);
802 writel_relaxed(val | TSADCV2_AUTO_SRC_EN(chn), regs + TSADCV2_AUTO_CON);
807 static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
808 enum tshut_mode mode)
812 val = readl_relaxed(regs + TSADCV2_INT_EN);
813 if (mode == TSHUT_MODE_GPIO) {
814 val &= ~TSADCV2_SHUT_2CRU_SRC_EN(chn);
815 val |= TSADCV2_SHUT_2GPIO_SRC_EN(chn);
817 val &= ~TSADCV2_SHUT_2GPIO_SRC_EN(chn);
818 val |= TSADCV2_SHUT_2CRU_SRC_EN(chn);
821 writel_relaxed(val, regs + TSADCV2_INT_EN);
824 static const struct rockchip_tsadc_chip px30_tsadc_data = {
825 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
826 .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
827 .chn_num = 2, /* 2 channels for tsadc */
829 .tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */
832 .initialize = rk_tsadcv4_initialize,
833 .irq_ack = rk_tsadcv3_irq_ack,
834 .control = rk_tsadcv3_control,
835 .get_temp = rk_tsadcv2_get_temp,
836 .set_alarm_temp = rk_tsadcv2_alarm_temp,
837 .set_tshut_temp = rk_tsadcv2_tshut_temp,
838 .set_tshut_mode = rk_tsadcv2_tshut_mode,
841 .id = rk3328_code_table,
842 .length = ARRAY_SIZE(rk3328_code_table),
843 .data_mask = TSADCV2_DATA_MASK,
844 .mode = ADC_INCREMENT,
848 static const struct rockchip_tsadc_chip rv1108_tsadc_data = {
849 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
850 .chn_num = 1, /* one channel for tsadc */
852 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
853 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
856 .initialize = rk_tsadcv2_initialize,
857 .irq_ack = rk_tsadcv3_irq_ack,
858 .control = rk_tsadcv3_control,
859 .get_temp = rk_tsadcv2_get_temp,
860 .set_alarm_temp = rk_tsadcv2_alarm_temp,
861 .set_tshut_temp = rk_tsadcv2_tshut_temp,
862 .set_tshut_mode = rk_tsadcv2_tshut_mode,
866 .length = ARRAY_SIZE(rv1108_table),
867 .data_mask = TSADCV2_DATA_MASK,
868 .mode = ADC_INCREMENT,
872 static const struct rockchip_tsadc_chip rk3228_tsadc_data = {
873 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
874 .chn_num = 1, /* one channel for tsadc */
876 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
877 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
880 .initialize = rk_tsadcv2_initialize,
881 .irq_ack = rk_tsadcv3_irq_ack,
882 .control = rk_tsadcv3_control,
883 .get_temp = rk_tsadcv2_get_temp,
884 .set_alarm_temp = rk_tsadcv2_alarm_temp,
885 .set_tshut_temp = rk_tsadcv2_tshut_temp,
886 .set_tshut_mode = rk_tsadcv2_tshut_mode,
889 .id = rk3228_code_table,
890 .length = ARRAY_SIZE(rk3228_code_table),
891 .data_mask = TSADCV3_DATA_MASK,
892 .mode = ADC_INCREMENT,
896 static const struct rockchip_tsadc_chip rk3288_tsadc_data = {
897 .chn_id[SENSOR_CPU] = 1, /* cpu sensor is channel 1 */
898 .chn_id[SENSOR_GPU] = 2, /* gpu sensor is channel 2 */
899 .chn_num = 2, /* two channels for tsadc */
901 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
902 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
905 .initialize = rk_tsadcv2_initialize,
906 .irq_ack = rk_tsadcv2_irq_ack,
907 .control = rk_tsadcv2_control,
908 .get_temp = rk_tsadcv2_get_temp,
909 .set_alarm_temp = rk_tsadcv2_alarm_temp,
910 .set_tshut_temp = rk_tsadcv2_tshut_temp,
911 .set_tshut_mode = rk_tsadcv2_tshut_mode,
914 .id = rk3288_code_table,
915 .length = ARRAY_SIZE(rk3288_code_table),
916 .data_mask = TSADCV2_DATA_MASK,
917 .mode = ADC_DECREMENT,
921 static const struct rockchip_tsadc_chip rk3328_tsadc_data = {
922 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
923 .chn_num = 1, /* one channels for tsadc */
925 .tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */
928 .initialize = rk_tsadcv2_initialize,
929 .irq_ack = rk_tsadcv3_irq_ack,
930 .control = rk_tsadcv3_control,
931 .get_temp = rk_tsadcv2_get_temp,
932 .set_alarm_temp = rk_tsadcv2_alarm_temp,
933 .set_tshut_temp = rk_tsadcv2_tshut_temp,
934 .set_tshut_mode = rk_tsadcv2_tshut_mode,
937 .id = rk3328_code_table,
938 .length = ARRAY_SIZE(rk3328_code_table),
939 .data_mask = TSADCV2_DATA_MASK,
940 .mode = ADC_INCREMENT,
944 static const struct rockchip_tsadc_chip rk3366_tsadc_data = {
945 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
946 .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
947 .chn_num = 2, /* two channels for tsadc */
949 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
950 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
953 .initialize = rk_tsadcv3_initialize,
954 .irq_ack = rk_tsadcv3_irq_ack,
955 .control = rk_tsadcv3_control,
956 .get_temp = rk_tsadcv2_get_temp,
957 .set_alarm_temp = rk_tsadcv2_alarm_temp,
958 .set_tshut_temp = rk_tsadcv2_tshut_temp,
959 .set_tshut_mode = rk_tsadcv2_tshut_mode,
962 .id = rk3228_code_table,
963 .length = ARRAY_SIZE(rk3228_code_table),
964 .data_mask = TSADCV3_DATA_MASK,
965 .mode = ADC_INCREMENT,
969 static const struct rockchip_tsadc_chip rk3368_tsadc_data = {
970 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
971 .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
972 .chn_num = 2, /* two channels for tsadc */
974 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
975 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
978 .initialize = rk_tsadcv2_initialize,
979 .irq_ack = rk_tsadcv2_irq_ack,
980 .control = rk_tsadcv2_control,
981 .get_temp = rk_tsadcv2_get_temp,
982 .set_alarm_temp = rk_tsadcv2_alarm_temp,
983 .set_tshut_temp = rk_tsadcv2_tshut_temp,
984 .set_tshut_mode = rk_tsadcv2_tshut_mode,
987 .id = rk3368_code_table,
988 .length = ARRAY_SIZE(rk3368_code_table),
989 .data_mask = TSADCV3_DATA_MASK,
990 .mode = ADC_INCREMENT,
994 static const struct rockchip_tsadc_chip rk3399_tsadc_data = {
995 .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
996 .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
997 .chn_num = 2, /* two channels for tsadc */
999 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
1000 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
1001 .tshut_temp = 95000,
1003 .initialize = rk_tsadcv3_initialize,
1004 .irq_ack = rk_tsadcv3_irq_ack,
1005 .control = rk_tsadcv3_control,
1006 .get_temp = rk_tsadcv2_get_temp,
1007 .set_alarm_temp = rk_tsadcv2_alarm_temp,
1008 .set_tshut_temp = rk_tsadcv2_tshut_temp,
1009 .set_tshut_mode = rk_tsadcv2_tshut_mode,
1012 .id = rk3399_code_table,
1013 .length = ARRAY_SIZE(rk3399_code_table),
1014 .data_mask = TSADCV3_DATA_MASK,
1015 .mode = ADC_INCREMENT,
1019 static const struct of_device_id of_rockchip_thermal_match[] = {
1020 { .compatible = "rockchip,px30-tsadc",
1021 .data = (void *)&px30_tsadc_data,
1024 .compatible = "rockchip,rv1108-tsadc",
1025 .data = (void *)&rv1108_tsadc_data,
1028 .compatible = "rockchip,rk3228-tsadc",
1029 .data = (void *)&rk3228_tsadc_data,
1032 .compatible = "rockchip,rk3288-tsadc",
1033 .data = (void *)&rk3288_tsadc_data,
1036 .compatible = "rockchip,rk3328-tsadc",
1037 .data = (void *)&rk3328_tsadc_data,
1040 .compatible = "rockchip,rk3366-tsadc",
1041 .data = (void *)&rk3366_tsadc_data,
1044 .compatible = "rockchip,rk3368-tsadc",
1045 .data = (void *)&rk3368_tsadc_data,
1048 .compatible = "rockchip,rk3399-tsadc",
1049 .data = (void *)&rk3399_tsadc_data,
1053 MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match);
1056 rockchip_thermal_toggle_sensor(struct rockchip_thermal_sensor *sensor, bool on)
1058 struct thermal_zone_device *tzd = sensor->tzd;
1060 tzd->ops->set_mode(tzd,
1061 on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED);
1064 static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev)
1066 struct rockchip_thermal_data *thermal = dev;
1069 dev_dbg(&thermal->pdev->dev, "thermal alarm\n");
1071 thermal->chip->irq_ack(thermal->regs);
1073 for (i = 0; i < thermal->chip->chn_num; i++)
1074 thermal_zone_device_update(thermal->sensors[i].tzd,
1075 THERMAL_EVENT_UNSPECIFIED);
1080 static int rockchip_thermal_set_trips(void *_sensor, int low, int high)
1082 struct rockchip_thermal_sensor *sensor = _sensor;
1083 struct rockchip_thermal_data *thermal = sensor->thermal;
1084 const struct rockchip_tsadc_chip *tsadc = thermal->chip;
1086 dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %d, high %d\n",
1087 __func__, sensor->id, low, high);
1089 return tsadc->set_alarm_temp(&tsadc->table,
1090 sensor->id, thermal->regs, high);
1093 static int rockchip_thermal_get_temp(void *_sensor, int *out_temp)
1095 struct rockchip_thermal_sensor *sensor = _sensor;
1096 struct rockchip_thermal_data *thermal = sensor->thermal;
1097 const struct rockchip_tsadc_chip *tsadc = sensor->thermal->chip;
1100 retval = tsadc->get_temp(&tsadc->table,
1101 sensor->id, thermal->regs, out_temp);
1102 dev_dbg(&thermal->pdev->dev, "sensor %d - temp: %d, retval: %d\n",
1103 sensor->id, *out_temp, retval);
1108 static const struct thermal_zone_of_device_ops rockchip_of_thermal_ops = {
1109 .get_temp = rockchip_thermal_get_temp,
1110 .set_trips = rockchip_thermal_set_trips,
1113 static int rockchip_configure_from_dt(struct device *dev,
1114 struct device_node *np,
1115 struct rockchip_thermal_data *thermal)
1117 u32 shut_temp, tshut_mode, tshut_polarity;
1119 if (of_property_read_u32(np, "rockchip,hw-tshut-temp", &shut_temp)) {
1121 "Missing tshut temp property, using default %d\n",
1122 thermal->chip->tshut_temp);
1123 thermal->tshut_temp = thermal->chip->tshut_temp;
1125 if (shut_temp > INT_MAX) {
1126 dev_err(dev, "Invalid tshut temperature specified: %d\n",
1130 thermal->tshut_temp = shut_temp;
1133 if (of_property_read_u32(np, "rockchip,hw-tshut-mode", &tshut_mode)) {
1135 "Missing tshut mode property, using default (%s)\n",
1136 thermal->chip->tshut_mode == TSHUT_MODE_GPIO ?
1138 thermal->tshut_mode = thermal->chip->tshut_mode;
1140 thermal->tshut_mode = tshut_mode;
1143 if (thermal->tshut_mode > 1) {
1144 dev_err(dev, "Invalid tshut mode specified: %d\n",
1145 thermal->tshut_mode);
1149 if (of_property_read_u32(np, "rockchip,hw-tshut-polarity",
1152 "Missing tshut-polarity property, using default (%s)\n",
1153 thermal->chip->tshut_polarity == TSHUT_LOW_ACTIVE ?
1155 thermal->tshut_polarity = thermal->chip->tshut_polarity;
1157 thermal->tshut_polarity = tshut_polarity;
1160 if (thermal->tshut_polarity > 1) {
1161 dev_err(dev, "Invalid tshut-polarity specified: %d\n",
1162 thermal->tshut_polarity);
1166 /* The tsadc wont to handle the error in here since some SoCs didn't
1167 * need this property.
1169 thermal->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
1170 if (IS_ERR(thermal->grf))
1171 dev_warn(dev, "Missing rockchip,grf property\n");
1177 rockchip_thermal_register_sensor(struct platform_device *pdev,
1178 struct rockchip_thermal_data *thermal,
1179 struct rockchip_thermal_sensor *sensor,
1182 const struct rockchip_tsadc_chip *tsadc = thermal->chip;
1185 tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode);
1187 error = tsadc->set_tshut_temp(&tsadc->table, id, thermal->regs,
1188 thermal->tshut_temp);
1190 dev_err(&pdev->dev, "%s: invalid tshut=%d, error=%d\n",
1191 __func__, thermal->tshut_temp, error);
1193 sensor->thermal = thermal;
1195 sensor->tzd = devm_thermal_zone_of_sensor_register(&pdev->dev, id,
1196 sensor, &rockchip_of_thermal_ops);
1197 if (IS_ERR(sensor->tzd)) {
1198 error = PTR_ERR(sensor->tzd);
1199 dev_err(&pdev->dev, "failed to register sensor %d: %d\n",
1208 * Reset TSADC Controller, reset all tsadc registers.
1210 static void rockchip_thermal_reset_controller(struct reset_control *reset)
1212 reset_control_assert(reset);
1213 usleep_range(10, 20);
1214 reset_control_deassert(reset);
1217 static int rockchip_thermal_probe(struct platform_device *pdev)
1219 struct device_node *np = pdev->dev.of_node;
1220 struct rockchip_thermal_data *thermal;
1221 const struct of_device_id *match;
1222 struct resource *res;
1227 match = of_match_node(of_rockchip_thermal_match, np);
1231 irq = platform_get_irq(pdev, 0);
1233 dev_err(&pdev->dev, "no irq resource?\n");
1237 thermal = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_thermal_data),
1242 thermal->pdev = pdev;
1244 thermal->chip = (const struct rockchip_tsadc_chip *)match->data;
1248 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1249 thermal->regs = devm_ioremap_resource(&pdev->dev, res);
1250 if (IS_ERR(thermal->regs))
1251 return PTR_ERR(thermal->regs);
1253 thermal->reset = devm_reset_control_get(&pdev->dev, "tsadc-apb");
1254 if (IS_ERR(thermal->reset)) {
1255 error = PTR_ERR(thermal->reset);
1256 dev_err(&pdev->dev, "failed to get tsadc reset: %d\n", error);
1260 thermal->clk = devm_clk_get(&pdev->dev, "tsadc");
1261 if (IS_ERR(thermal->clk)) {
1262 error = PTR_ERR(thermal->clk);
1263 dev_err(&pdev->dev, "failed to get tsadc clock: %d\n", error);
1267 thermal->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
1268 if (IS_ERR(thermal->pclk)) {
1269 error = PTR_ERR(thermal->pclk);
1270 dev_err(&pdev->dev, "failed to get apb_pclk clock: %d\n",
1275 error = clk_prepare_enable(thermal->clk);
1277 dev_err(&pdev->dev, "failed to enable converter clock: %d\n",
1282 error = clk_prepare_enable(thermal->pclk);
1284 dev_err(&pdev->dev, "failed to enable pclk: %d\n", error);
1285 goto err_disable_clk;
1288 rockchip_thermal_reset_controller(thermal->reset);
1290 error = rockchip_configure_from_dt(&pdev->dev, np, thermal);
1292 dev_err(&pdev->dev, "failed to parse device tree data: %d\n",
1294 goto err_disable_pclk;
1297 thermal->chip->initialize(thermal->grf, thermal->regs,
1298 thermal->tshut_polarity);
1300 for (i = 0; i < thermal->chip->chn_num; i++) {
1301 error = rockchip_thermal_register_sensor(pdev, thermal,
1302 &thermal->sensors[i],
1303 thermal->chip->chn_id[i]);
1306 "failed to register sensor[%d] : error = %d\n",
1308 goto err_disable_pclk;
1312 error = devm_request_threaded_irq(&pdev->dev, irq, NULL,
1313 &rockchip_thermal_alarm_irq_thread,
1315 "rockchip_thermal", thermal);
1318 "failed to request tsadc irq: %d\n", error);
1319 goto err_disable_pclk;
1322 thermal->chip->control(thermal->regs, true);
1324 for (i = 0; i < thermal->chip->chn_num; i++)
1325 rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
1327 platform_set_drvdata(pdev, thermal);
1332 clk_disable_unprepare(thermal->pclk);
1334 clk_disable_unprepare(thermal->clk);
1339 static int rockchip_thermal_remove(struct platform_device *pdev)
1341 struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
1344 for (i = 0; i < thermal->chip->chn_num; i++) {
1345 struct rockchip_thermal_sensor *sensor = &thermal->sensors[i];
1347 rockchip_thermal_toggle_sensor(sensor, false);
1350 thermal->chip->control(thermal->regs, false);
1352 clk_disable_unprepare(thermal->pclk);
1353 clk_disable_unprepare(thermal->clk);
1358 static int __maybe_unused rockchip_thermal_suspend(struct device *dev)
1360 struct rockchip_thermal_data *thermal = dev_get_drvdata(dev);
1363 for (i = 0; i < thermal->chip->chn_num; i++)
1364 rockchip_thermal_toggle_sensor(&thermal->sensors[i], false);
1366 thermal->chip->control(thermal->regs, false);
1368 clk_disable(thermal->pclk);
1369 clk_disable(thermal->clk);
1371 pinctrl_pm_select_sleep_state(dev);
1376 static int __maybe_unused rockchip_thermal_resume(struct device *dev)
1378 struct rockchip_thermal_data *thermal = dev_get_drvdata(dev);
1382 error = clk_enable(thermal->clk);
1386 error = clk_enable(thermal->pclk);
1388 clk_disable(thermal->clk);
1392 rockchip_thermal_reset_controller(thermal->reset);
1394 thermal->chip->initialize(thermal->grf, thermal->regs,
1395 thermal->tshut_polarity);
1397 for (i = 0; i < thermal->chip->chn_num; i++) {
1398 int id = thermal->sensors[i].id;
1400 thermal->chip->set_tshut_mode(id, thermal->regs,
1401 thermal->tshut_mode);
1403 error = thermal->chip->set_tshut_temp(&thermal->chip->table,
1405 thermal->tshut_temp);
1407 dev_err(dev, "%s: invalid tshut=%d, error=%d\n",
1408 __func__, thermal->tshut_temp, error);
1411 thermal->chip->control(thermal->regs, true);
1413 for (i = 0; i < thermal->chip->chn_num; i++)
1414 rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
1416 pinctrl_pm_select_default_state(dev);
1421 static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops,
1422 rockchip_thermal_suspend, rockchip_thermal_resume);
1424 static struct platform_driver rockchip_thermal_driver = {
1426 .name = "rockchip-thermal",
1427 .pm = &rockchip_thermal_pm_ops,
1428 .of_match_table = of_rockchip_thermal_match,
1430 .probe = rockchip_thermal_probe,
1431 .remove = rockchip_thermal_remove,
1434 module_platform_driver(rockchip_thermal_driver);
1436 MODULE_DESCRIPTION("ROCKCHIP THERMAL Driver");
1437 MODULE_AUTHOR("Rockchip, Inc.");
1438 MODULE_LICENSE("GPL v2");
1439 MODULE_ALIAS("platform:rockchip-thermal");