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Thomas Gleixner5a729242022-06-07 16:11:32 +02001// SPDX-License-Identifier: GPL-2.0-only
kongxinwei9a5238a2015-05-20 19:16:37 +08002/*
Hao Fang4481b392021-03-30 14:45:33 +08003 * HiSilicon thermal sensor driver
kongxinwei9a5238a2015-05-20 19:16:37 +08004 *
Hao Fang4481b392021-03-30 14:45:33 +08005 * Copyright (c) 2014-2015 HiSilicon Limited.
kongxinwei9a5238a2015-05-20 19:16:37 +08006 * Copyright (c) 2014-2015 Linaro Limited.
7 *
8 * Xinwei Kong <kong.kongxinwei@hisilicon.com>
9 * Leo Yan <leo.yan@linaro.org>
kongxinwei9a5238a2015-05-20 19:16:37 +080010 */
11
12#include <linux/cpufreq.h>
13#include <linux/delay.h>
14#include <linux/interrupt.h>
15#include <linux/module.h>
Rob Herringf6a756e2023-07-14 11:50:07 -060016#include <linux/of.h>
kongxinwei9a5238a2015-05-20 19:16:37 +080017#include <linux/platform_device.h>
18#include <linux/io.h>
Daniel Lezcano9272d2d42023-02-06 16:34:29 +010019#include <linux/thermal.h>
kongxinwei9a5238a2015-05-20 19:16:37 +080020
Kevin Wangtao5ed82b72017-10-22 10:54:33 +020021#define HI6220_TEMP0_LAG (0x0)
22#define HI6220_TEMP0_TH (0x4)
23#define HI6220_TEMP0_RST_TH (0x8)
24#define HI6220_TEMP0_CFG (0xC)
Kevin Wangtaoa160a462017-10-22 10:54:34 +020025#define HI6220_TEMP0_CFG_SS_MSK (0xF000)
Kevin Wangtao5ed82b72017-10-22 10:54:33 +020026#define HI6220_TEMP0_CFG_HDAK_MSK (0x30)
27#define HI6220_TEMP0_EN (0x10)
28#define HI6220_TEMP0_INT_EN (0x14)
29#define HI6220_TEMP0_INT_CLR (0x18)
30#define HI6220_TEMP0_RST_MSK (0x1C)
31#define HI6220_TEMP0_VALUE (0x28)
kongxinwei9a5238a2015-05-20 19:16:37 +080032
Kevin Wangtao2bb60a82017-10-22 10:54:35 +020033#define HI3660_OFFSET(chan) ((chan) * 0x40)
34#define HI3660_TEMP(chan) (HI3660_OFFSET(chan) + 0x1C)
35#define HI3660_TH(chan) (HI3660_OFFSET(chan) + 0x20)
36#define HI3660_LAG(chan) (HI3660_OFFSET(chan) + 0x28)
37#define HI3660_INT_EN(chan) (HI3660_OFFSET(chan) + 0x2C)
38#define HI3660_INT_CLR(chan) (HI3660_OFFSET(chan) + 0x30)
39
Kevin Wangtao5ed82b72017-10-22 10:54:33 +020040#define HI6220_TEMP_BASE (-60000)
41#define HI6220_TEMP_RESET (100000)
42#define HI6220_TEMP_STEP (785)
Kevin Wangtaoa160a462017-10-22 10:54:34 +020043#define HI6220_TEMP_LAG (3500)
kongxinwei9a5238a2015-05-20 19:16:37 +080044
Kevin Wangtao2bb60a82017-10-22 10:54:35 +020045#define HI3660_TEMP_BASE (-63780)
46#define HI3660_TEMP_STEP (205)
47#define HI3660_TEMP_LAG (4000)
48
Daniel Lezcanoa849eec2018-09-25 11:03:05 +020049#define HI6220_CLUSTER0_SENSOR 2
Daniel Lezcanoce8c0702018-09-25 11:03:10 +020050#define HI6220_CLUSTER1_SENSOR 1
51
52#define HI3660_LITTLE_SENSOR 0
Daniel Lezcanoa849eec2018-09-25 11:03:05 +020053#define HI3660_BIG_SENSOR 1
Daniel Lezcanoce8c0702018-09-25 11:03:10 +020054#define HI3660_G3D_SENSOR 2
55#define HI3660_MODEM_SENSOR 3
kongxinwei9a5238a2015-05-20 19:16:37 +080056
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +020057struct hisi_thermal_data;
58
kongxinwei9a5238a2015-05-20 19:16:37 +080059struct hisi_thermal_sensor {
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +020060 struct hisi_thermal_data *data;
kongxinwei9a5238a2015-05-20 19:16:37 +080061 struct thermal_zone_device *tzd;
Daniel Lezcano2cffaef2018-09-25 11:03:07 +020062 const char *irq_name;
kongxinwei9a5238a2015-05-20 19:16:37 +080063 uint32_t id;
64 uint32_t thres_temp;
65};
66
Daniel Lezcanoc90aaec2018-09-25 11:02:59 +020067struct hisi_thermal_ops {
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +020068 int (*get_temp)(struct hisi_thermal_sensor *sensor);
69 int (*enable_sensor)(struct hisi_thermal_sensor *sensor);
70 int (*disable_sensor)(struct hisi_thermal_sensor *sensor);
71 int (*irq_handler)(struct hisi_thermal_sensor *sensor);
Daniel Lezcanoc90aaec2018-09-25 11:02:59 +020072 int (*probe)(struct hisi_thermal_data *data);
73};
74
75struct hisi_thermal_data {
76 const struct hisi_thermal_ops *ops;
Daniel Lezcano8c0ffc82018-09-25 11:03:03 +020077 struct hisi_thermal_sensor *sensor;
kongxinwei9a5238a2015-05-20 19:16:37 +080078 struct platform_device *pdev;
79 struct clk *clk;
kongxinwei9a5238a2015-05-20 19:16:37 +080080 void __iomem *regs;
Daniel Lezcano8c0ffc82018-09-25 11:03:03 +020081 int nr_sensors;
kongxinwei9a5238a2015-05-20 19:16:37 +080082};
83
Daniel Lezcano48880b92017-10-19 19:05:46 +020084/*
85 * The temperature computation on the tsensor is as follow:
86 * Unit: millidegree Celsius
Kevin Wangtaoe42bbe12017-10-19 19:05:57 +020087 * Step: 200/255 (0.7843)
Daniel Lezcano48880b92017-10-19 19:05:46 +020088 * Temperature base: -60°C
89 *
Kevin Wangtaoe42bbe12017-10-19 19:05:57 +020090 * The register is programmed in temperature steps, every step is 785
Daniel Lezcano48880b92017-10-19 19:05:46 +020091 * millidegree and begins at -60 000 m°C
92 *
93 * The temperature from the steps:
94 *
Kevin Wangtaoe42bbe12017-10-19 19:05:57 +020095 * Temp = TempBase + (steps x 785)
Daniel Lezcano48880b92017-10-19 19:05:46 +020096 *
97 * and the steps from the temperature:
98 *
Kevin Wangtaoe42bbe12017-10-19 19:05:57 +020099 * steps = (Temp - TempBase) / 785
Daniel Lezcano48880b92017-10-19 19:05:46 +0200100 *
101 */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200102static inline int hi6220_thermal_step_to_temp(int step)
kongxinwei9a5238a2015-05-20 19:16:37 +0800103{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200104 return HI6220_TEMP_BASE + (step * HI6220_TEMP_STEP);
kongxinwei9a5238a2015-05-20 19:16:37 +0800105}
106
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200107static inline int hi6220_thermal_temp_to_step(int temp)
kongxinwei9a5238a2015-05-20 19:16:37 +0800108{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200109 return DIV_ROUND_UP(temp - HI6220_TEMP_BASE, HI6220_TEMP_STEP);
Daniel Lezcanodb2b0332017-10-19 19:05:47 +0200110}
111
Daniel Lezcano10d7e9a2017-10-19 19:05:51 +0200112/*
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200113 * for Hi3660,
114 * Step: 189/922 (0.205)
115 * Temperature base: -63.780°C
116 *
117 * The register is programmed in temperature steps, every step is 205
118 * millidegree and begins at -63 780 m°C
119 */
120static inline int hi3660_thermal_step_to_temp(int step)
121{
122 return HI3660_TEMP_BASE + step * HI3660_TEMP_STEP;
123}
124
125static inline int hi3660_thermal_temp_to_step(int temp)
126{
127 return DIV_ROUND_UP(temp - HI3660_TEMP_BASE, HI3660_TEMP_STEP);
128}
129
130/*
Daniel Lezcano10d7e9a2017-10-19 19:05:51 +0200131 * The lag register contains 5 bits encoding the temperature in steps.
132 *
133 * Each time the temperature crosses the threshold boundary, an
134 * interrupt is raised. It could be when the temperature is going
135 * above the threshold or below. However, if the temperature is
136 * fluctuating around this value due to the load, we can receive
137 * several interrupts which may not desired.
138 *
139 * We can setup a temperature representing the delta between the
140 * threshold and the current temperature when the temperature is
141 * decreasing.
142 *
143 * For instance: the lag register is 5°C, the threshold is 65°C, when
144 * the temperature reaches 65°C an interrupt is raised and when the
145 * temperature decrease to 65°C - 5°C another interrupt is raised.
146 *
147 * A very short lag can lead to an interrupt storm, a long lag
148 * increase the latency to react to the temperature changes. In our
149 * case, that is not really a problem as we are polling the
150 * temperature.
151 *
152 * [0:4] : lag register
153 *
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200154 * The temperature is coded in steps, cf. HI6220_TEMP_STEP.
Daniel Lezcano10d7e9a2017-10-19 19:05:51 +0200155 *
156 * Min : 0x00 : 0.0 °C
157 * Max : 0x1F : 24.3 °C
158 *
159 * The 'value' parameter is in milliCelsius.
160 */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200161static inline void hi6220_thermal_set_lag(void __iomem *addr, int value)
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200162{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200163 writel(DIV_ROUND_UP(value, HI6220_TEMP_STEP) & 0x1F,
164 addr + HI6220_TEMP0_LAG);
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200165}
166
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200167static inline void hi6220_thermal_alarm_clear(void __iomem *addr, int value)
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200168{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200169 writel(value, addr + HI6220_TEMP0_INT_CLR);
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200170}
171
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200172static inline void hi6220_thermal_alarm_enable(void __iomem *addr, int value)
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200173{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200174 writel(value, addr + HI6220_TEMP0_INT_EN);
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200175}
176
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200177static inline void hi6220_thermal_alarm_set(void __iomem *addr, int temp)
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200178{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200179 writel(hi6220_thermal_temp_to_step(temp) | 0x0FFFFFF00,
180 addr + HI6220_TEMP0_TH);
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200181}
182
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200183static inline void hi6220_thermal_reset_set(void __iomem *addr, int temp)
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200184{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200185 writel(hi6220_thermal_temp_to_step(temp), addr + HI6220_TEMP0_RST_TH);
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200186}
187
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200188static inline void hi6220_thermal_reset_enable(void __iomem *addr, int value)
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200189{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200190 writel(value, addr + HI6220_TEMP0_RST_MSK);
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200191}
192
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200193static inline void hi6220_thermal_enable(void __iomem *addr, int value)
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200194{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200195 writel(value, addr + HI6220_TEMP0_EN);
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200196}
197
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200198static inline int hi6220_thermal_get_temperature(void __iomem *addr)
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200199{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200200 return hi6220_thermal_step_to_temp(readl(addr + HI6220_TEMP0_VALUE));
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200201}
202
Daniel Lezcanob4243152017-10-19 19:05:50 +0200203/*
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200204 * [0:6] lag register
205 *
206 * The temperature is coded in steps, cf. HI3660_TEMP_STEP.
207 *
208 * Min : 0x00 : 0.0 °C
209 * Max : 0x7F : 26.0 °C
210 *
211 */
212static inline void hi3660_thermal_set_lag(void __iomem *addr,
213 int id, int value)
214{
215 writel(DIV_ROUND_UP(value, HI3660_TEMP_STEP) & 0x7F,
216 addr + HI3660_LAG(id));
217}
218
219static inline void hi3660_thermal_alarm_clear(void __iomem *addr,
220 int id, int value)
221{
222 writel(value, addr + HI3660_INT_CLR(id));
223}
224
225static inline void hi3660_thermal_alarm_enable(void __iomem *addr,
226 int id, int value)
227{
228 writel(value, addr + HI3660_INT_EN(id));
229}
230
231static inline void hi3660_thermal_alarm_set(void __iomem *addr,
232 int id, int value)
233{
234 writel(value, addr + HI3660_TH(id));
235}
236
237static inline int hi3660_thermal_get_temperature(void __iomem *addr, int id)
238{
239 return hi3660_thermal_step_to_temp(readl(addr + HI3660_TEMP(id)));
240}
241
242/*
Daniel Lezcanob4243152017-10-19 19:05:50 +0200243 * Temperature configuration register - Sensor selection
244 *
245 * Bits [19:12]
246 *
247 * 0x0: local sensor (default)
248 * 0x1: remote sensor 1 (ACPU cluster 1)
249 * 0x2: remote sensor 2 (ACPU cluster 0)
250 * 0x3: remote sensor 3 (G3D)
251 */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200252static inline void hi6220_thermal_sensor_select(void __iomem *addr, int sensor)
Daniel Lezcanob4243152017-10-19 19:05:50 +0200253{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200254 writel((readl(addr + HI6220_TEMP0_CFG) & ~HI6220_TEMP0_CFG_SS_MSK) |
255 (sensor << 12), addr + HI6220_TEMP0_CFG);
Daniel Lezcanob4243152017-10-19 19:05:50 +0200256}
257
258/*
259 * Temperature configuration register - Hdak conversion polling interval
260 *
261 * Bits [5:4]
262 *
263 * 0x0 : 0.768 ms
264 * 0x1 : 6.144 ms
265 * 0x2 : 49.152 ms
266 * 0x3 : 393.216 ms
267 */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200268static inline void hi6220_thermal_hdak_set(void __iomem *addr, int value)
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200269{
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200270 writel((readl(addr + HI6220_TEMP0_CFG) & ~HI6220_TEMP0_CFG_HDAK_MSK) |
271 (value << 4), addr + HI6220_TEMP0_CFG);
Daniel Lezcano1e11b012017-10-19 19:05:49 +0200272}
273
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200274static int hi6220_thermal_irq_handler(struct hisi_thermal_sensor *sensor)
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200275{
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200276 struct hisi_thermal_data *data = sensor->data;
277
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200278 hi6220_thermal_alarm_clear(data->regs, 1);
279 return 0;
280}
281
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200282static int hi3660_thermal_irq_handler(struct hisi_thermal_sensor *sensor)
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200283{
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200284 struct hisi_thermal_data *data = sensor->data;
285
286 hi3660_thermal_alarm_clear(data->regs, sensor->id, 1);
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200287 return 0;
288}
289
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200290static int hi6220_thermal_get_temp(struct hisi_thermal_sensor *sensor)
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200291{
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200292 struct hisi_thermal_data *data = sensor->data;
293
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200294 return hi6220_thermal_get_temperature(data->regs);
295}
296
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200297static int hi3660_thermal_get_temp(struct hisi_thermal_sensor *sensor)
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200298{
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200299 struct hisi_thermal_data *data = sensor->data;
300
301 return hi3660_thermal_get_temperature(data->regs, sensor->id);
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200302}
303
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200304static int hi6220_thermal_disable_sensor(struct hisi_thermal_sensor *sensor)
kongxinwei9a5238a2015-05-20 19:16:37 +0800305{
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200306 struct hisi_thermal_data *data = sensor->data;
307
kongxinwei9a5238a2015-05-20 19:16:37 +0800308 /* disable sensor module */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200309 hi6220_thermal_enable(data->regs, 0);
310 hi6220_thermal_alarm_enable(data->regs, 0);
311 hi6220_thermal_reset_enable(data->regs, 0);
Kevin Wangtao943c0f6a2017-10-19 19:05:56 +0200312
313 clk_disable_unprepare(data->clk);
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200314
315 return 0;
kongxinwei9a5238a2015-05-20 19:16:37 +0800316}
317
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200318static int hi3660_thermal_disable_sensor(struct hisi_thermal_sensor *sensor)
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200319{
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200320 struct hisi_thermal_data *data = sensor->data;
321
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200322 /* disable sensor module */
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200323 hi3660_thermal_alarm_enable(data->regs, sensor->id, 0);
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200324 return 0;
325}
326
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200327static int hi6220_thermal_enable_sensor(struct hisi_thermal_sensor *sensor)
Kevin Wangtaoa0678da82017-10-22 10:54:32 +0200328{
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200329 struct hisi_thermal_data *data = sensor->data;
Kevin Wangtaoa0678da82017-10-22 10:54:32 +0200330 int ret;
331
332 /* enable clock for tsensor */
333 ret = clk_prepare_enable(data->clk);
334 if (ret)
335 return ret;
336
337 /* disable module firstly */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200338 hi6220_thermal_reset_enable(data->regs, 0);
339 hi6220_thermal_enable(data->regs, 0);
Kevin Wangtaoa0678da82017-10-22 10:54:32 +0200340
341 /* select sensor id */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200342 hi6220_thermal_sensor_select(data->regs, sensor->id);
Kevin Wangtaoa0678da82017-10-22 10:54:32 +0200343
344 /* setting the hdak time */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200345 hi6220_thermal_hdak_set(data->regs, 0);
Kevin Wangtaoa0678da82017-10-22 10:54:32 +0200346
347 /* setting lag value between current temp and the threshold */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200348 hi6220_thermal_set_lag(data->regs, HI6220_TEMP_LAG);
Kevin Wangtaoa0678da82017-10-22 10:54:32 +0200349
350 /* enable for interrupt */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200351 hi6220_thermal_alarm_set(data->regs, sensor->thres_temp);
Kevin Wangtaoa0678da82017-10-22 10:54:32 +0200352
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200353 hi6220_thermal_reset_set(data->regs, HI6220_TEMP_RESET);
Kevin Wangtaoa0678da82017-10-22 10:54:32 +0200354
355 /* enable module */
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200356 hi6220_thermal_reset_enable(data->regs, 1);
357 hi6220_thermal_enable(data->regs, 1);
Kevin Wangtaoa0678da82017-10-22 10:54:32 +0200358
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200359 hi6220_thermal_alarm_clear(data->regs, 0);
360 hi6220_thermal_alarm_enable(data->regs, 1);
Kevin Wangtaoa0678da82017-10-22 10:54:32 +0200361
362 return 0;
363}
364
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200365static int hi3660_thermal_enable_sensor(struct hisi_thermal_sensor *sensor)
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200366{
367 unsigned int value;
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200368 struct hisi_thermal_data *data = sensor->data;
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200369
370 /* disable interrupt */
371 hi3660_thermal_alarm_enable(data->regs, sensor->id, 0);
372
373 /* setting lag value between current temp and the threshold */
374 hi3660_thermal_set_lag(data->regs, sensor->id, HI3660_TEMP_LAG);
375
376 /* set interrupt threshold */
377 value = hi3660_thermal_temp_to_step(sensor->thres_temp);
378 hi3660_thermal_alarm_set(data->regs, sensor->id, value);
379
380 /* enable interrupt */
381 hi3660_thermal_alarm_clear(data->regs, sensor->id, 1);
382 hi3660_thermal_alarm_enable(data->regs, sensor->id, 1);
383
384 return 0;
385}
386
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200387static int hi6220_thermal_probe(struct hisi_thermal_data *data)
388{
389 struct platform_device *pdev = data->pdev;
390 struct device *dev = &pdev->dev;
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200391 int ret;
392
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200393 data->clk = devm_clk_get(dev, "thermal_clk");
394 if (IS_ERR(data->clk)) {
395 ret = PTR_ERR(data->clk);
396 if (ret != -EPROBE_DEFER)
397 dev_err(dev, "failed to get thermal clk: %d\n", ret);
398 return ret;
399 }
400
Daniel Lezcano8c0ffc82018-09-25 11:03:03 +0200401 data->sensor = devm_kzalloc(dev, sizeof(*data->sensor), GFP_KERNEL);
402 if (!data->sensor)
403 return -ENOMEM;
404
Daniel Lezcanoa849eec2018-09-25 11:03:05 +0200405 data->sensor[0].id = HI6220_CLUSTER0_SENSOR;
Daniel Lezcano2cffaef2018-09-25 11:03:07 +0200406 data->sensor[0].irq_name = "tsensor_intr";
Daniel Lezcano8c0ffc82018-09-25 11:03:03 +0200407 data->sensor[0].data = data;
408 data->nr_sensors = 1;
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200409
410 return 0;
411}
412
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200413static int hi3660_thermal_probe(struct hisi_thermal_data *data)
414{
Daniel Lezcano8c0ffc82018-09-25 11:03:03 +0200415 struct platform_device *pdev = data->pdev;
416 struct device *dev = &pdev->dev;
417
Daniel Lezcano7d3a2a22018-11-30 09:00:32 +0100418 data->nr_sensors = 1;
Daniel Lezcano8c6c3682018-09-25 11:03:12 +0200419
420 data->sensor = devm_kzalloc(dev, sizeof(*data->sensor) *
421 data->nr_sensors, GFP_KERNEL);
Daniel Lezcano8c0ffc82018-09-25 11:03:03 +0200422 if (!data->sensor)
423 return -ENOMEM;
424
Daniel Lezcanoa849eec2018-09-25 11:03:05 +0200425 data->sensor[0].id = HI3660_BIG_SENSOR;
Daniel Lezcano2cffaef2018-09-25 11:03:07 +0200426 data->sensor[0].irq_name = "tsensor_a73";
Daniel Lezcano8c0ffc82018-09-25 11:03:03 +0200427 data->sensor[0].data = data;
Daniel Lezcano8c6c3682018-09-25 11:03:12 +0200428
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200429 return 0;
430}
431
Daniel Lezcano5ee78112022-08-05 00:43:39 +0200432static int hisi_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
kongxinwei9a5238a2015-05-20 19:16:37 +0800433{
Daniel Lezcano5f68d072023-03-01 21:14:30 +0100434 struct hisi_thermal_sensor *sensor = thermal_zone_device_priv(tz);
Daniel Lezcano49e778d2018-09-25 11:03:01 +0200435 struct hisi_thermal_data *data = sensor->data;
kongxinwei9a5238a2015-05-20 19:16:37 +0800436
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200437 *temp = data->ops->get_temp(sensor);
kongxinwei9a5238a2015-05-20 19:16:37 +0800438
kongxinwei9a5238a2015-05-20 19:16:37 +0800439 return 0;
440}
441
Daniel Lezcano5ee78112022-08-05 00:43:39 +0200442static const struct thermal_zone_device_ops hisi_of_thermal_ops = {
kongxinwei9a5238a2015-05-20 19:16:37 +0800443 .get_temp = hisi_thermal_get_temp,
444};
445
kongxinwei9a5238a2015-05-20 19:16:37 +0800446static irqreturn_t hisi_thermal_alarm_irq_thread(int irq, void *dev)
447{
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200448 struct hisi_thermal_sensor *sensor = dev;
449 struct hisi_thermal_data *data = sensor->data;
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200450 int temp = 0;
kongxinwei9a5238a2015-05-20 19:16:37 +0800451
Daniel Lezcano9c9ae8d2018-09-25 11:03:00 +0200452 data->ops->irq_handler(sensor);
kongxinwei9a5238a2015-05-20 19:16:37 +0800453
Daniel Lezcano5ee78112022-08-05 00:43:39 +0200454 temp = data->ops->get_temp(sensor);
Daniel Lezcano10d7e9a2017-10-19 19:05:51 +0200455
456 if (temp >= sensor->thres_temp) {
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200457 dev_crit(&data->pdev->dev,
458 "sensor <%d> THERMAL ALARM: %d > %d\n",
459 sensor->id, temp, sensor->thres_temp);
Daniel Lezcano10d7e9a2017-10-19 19:05:51 +0200460
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200461 thermal_zone_device_update(sensor->tzd,
Daniel Lezcano10d7e9a2017-10-19 19:05:51 +0200462 THERMAL_EVENT_UNSPECIFIED);
463
Kevin Wangtao5ed82b72017-10-22 10:54:33 +0200464 } else {
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200465 dev_crit(&data->pdev->dev,
466 "sensor <%d> THERMAL ALARM stopped: %d < %d\n",
467 sensor->id, temp, sensor->thres_temp);
Daniel Lezcano10d7e9a2017-10-19 19:05:51 +0200468 }
kongxinwei9a5238a2015-05-20 19:16:37 +0800469
470 return IRQ_HANDLED;
471}
472
473static int hisi_thermal_register_sensor(struct platform_device *pdev,
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200474 struct hisi_thermal_sensor *sensor)
kongxinwei9a5238a2015-05-20 19:16:37 +0800475{
476 int ret, i;
Daniel Lezcano68a306c2022-10-03 11:25:45 +0200477 struct thermal_trip trip;
kongxinwei9a5238a2015-05-20 19:16:37 +0800478
Daniel Lezcano5ee78112022-08-05 00:43:39 +0200479 sensor->tzd = devm_thermal_of_zone_register(&pdev->dev,
480 sensor->id, sensor,
481 &hisi_of_thermal_ops);
kongxinwei9a5238a2015-05-20 19:16:37 +0800482 if (IS_ERR(sensor->tzd)) {
483 ret = PTR_ERR(sensor->tzd);
Leo Yan439dc962016-03-29 19:27:12 +0800484 sensor->tzd = NULL;
kongxinwei9a5238a2015-05-20 19:16:37 +0800485 dev_err(&pdev->dev, "failed to register sensor id %d: %d\n",
486 sensor->id, ret);
487 return ret;
488 }
489
Daniel Lezcano68a306c2022-10-03 11:25:45 +0200490 for (i = 0; i < thermal_zone_get_num_trips(sensor->tzd); i++) {
kongxinwei9a5238a2015-05-20 19:16:37 +0800491
Daniel Lezcano68a306c2022-10-03 11:25:45 +0200492 thermal_zone_get_trip(sensor->tzd, i, &trip);
493
494 if (trip.type == THERMAL_TRIP_PASSIVE) {
495 sensor->thres_temp = trip.temperature;
kongxinwei9a5238a2015-05-20 19:16:37 +0800496 break;
497 }
498 }
499
500 return 0;
501}
502
Daniel Lezcanoc90aaec2018-09-25 11:02:59 +0200503static const struct hisi_thermal_ops hi6220_ops = {
504 .get_temp = hi6220_thermal_get_temp,
505 .enable_sensor = hi6220_thermal_enable_sensor,
506 .disable_sensor = hi6220_thermal_disable_sensor,
507 .irq_handler = hi6220_thermal_irq_handler,
508 .probe = hi6220_thermal_probe,
509};
510
511static const struct hisi_thermal_ops hi3660_ops = {
512 .get_temp = hi3660_thermal_get_temp,
513 .enable_sensor = hi3660_thermal_enable_sensor,
514 .disable_sensor = hi3660_thermal_disable_sensor,
515 .irq_handler = hi3660_thermal_irq_handler,
516 .probe = hi3660_thermal_probe,
517};
518
kongxinwei9a5238a2015-05-20 19:16:37 +0800519static const struct of_device_id of_hisi_thermal_match[] = {
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200520 {
521 .compatible = "hisilicon,tsensor",
Daniel Lezcanoc90aaec2018-09-25 11:02:59 +0200522 .data = &hi6220_ops,
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200523 },
524 {
525 .compatible = "hisilicon,hi3660-tsensor",
Daniel Lezcanoc90aaec2018-09-25 11:02:59 +0200526 .data = &hi3660_ops,
Kevin Wangtao2bb60a82017-10-22 10:54:35 +0200527 },
kongxinwei9a5238a2015-05-20 19:16:37 +0800528 { /* end */ }
529};
530MODULE_DEVICE_TABLE(of, of_hisi_thermal_match);
531
532static void hisi_thermal_toggle_sensor(struct hisi_thermal_sensor *sensor,
533 bool on)
534{
535 struct thermal_zone_device *tzd = sensor->tzd;
536
Andrzej Pietrasiewicz7f4957b2020-06-29 14:29:21 +0200537 if (on)
538 thermal_zone_device_enable(tzd);
539 else
540 thermal_zone_device_disable(tzd);
kongxinwei9a5238a2015-05-20 19:16:37 +0800541}
542
543static int hisi_thermal_probe(struct platform_device *pdev)
544{
545 struct hisi_thermal_data *data;
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200546 struct device *dev = &pdev->dev;
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200547 int i, ret;
kongxinwei9a5238a2015-05-20 19:16:37 +0800548
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200549 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
kongxinwei9a5238a2015-05-20 19:16:37 +0800550 if (!data)
551 return -ENOMEM;
552
kongxinwei9a5238a2015-05-20 19:16:37 +0800553 data->pdev = pdev;
kongxinwei9a5238a2015-05-20 19:16:37 +0800554 platform_set_drvdata(pdev, data);
Daniel Lezcanoc90aaec2018-09-25 11:02:59 +0200555 data->ops = of_device_get_match_data(dev);
kongxinwei9a5238a2015-05-20 19:16:37 +0800556
Yang Lie45c9a22023-03-08 14:27:19 +0800557 data->regs = devm_platform_ioremap_resource(pdev, 0);
Ye Binbeaa4102021-04-09 15:52:24 +0800558 if (IS_ERR(data->regs))
Daniel Lezcano9bb4ec82018-09-25 11:03:02 +0200559 return PTR_ERR(data->regs);
Daniel Lezcano9bb4ec82018-09-25 11:03:02 +0200560
Daniel Lezcanoc90aaec2018-09-25 11:02:59 +0200561 ret = data->ops->probe(data);
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200562 if (ret)
563 return ret;
564
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200565 for (i = 0; i < data->nr_sensors; i++) {
566 struct hisi_thermal_sensor *sensor = &data->sensor[i];
kongxinwei9a5238a2015-05-20 19:16:37 +0800567
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200568 ret = hisi_thermal_register_sensor(pdev, sensor);
569 if (ret) {
570 dev_err(dev, "failed to register thermal sensor: %d\n",
571 ret);
572 return ret;
573 }
Daniel Lezcanoff4ec292017-10-19 19:05:44 +0200574
Daniel Lezcano5d7ab8f2018-11-30 09:00:31 +0100575 ret = platform_get_irq(pdev, 0);
Daniel Lezcanoa18e83e2018-09-25 11:03:09 +0200576 if (ret < 0)
577 return ret;
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200578
Daniel Lezcanoa18e83e2018-09-25 11:03:09 +0200579 ret = devm_request_threaded_irq(dev, ret, NULL,
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200580 hisi_thermal_alarm_irq_thread,
Daniel Lezcano2cffaef2018-09-25 11:03:07 +0200581 IRQF_ONESHOT, sensor->irq_name,
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200582 sensor);
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200583 if (ret < 0) {
Daniel Lezcanoa18e83e2018-09-25 11:03:09 +0200584 dev_err(dev, "Failed to request alarm irq: %d\n", ret);
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200585 return ret;
586 }
Daniel Lezcano2cb4de72017-10-19 19:05:45 +0200587
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200588 ret = data->ops->enable_sensor(sensor);
589 if (ret) {
590 dev_err(dev, "Failed to setup the sensor: %d\n", ret);
591 return ret;
592 }
593
594 hisi_thermal_toggle_sensor(sensor, true);
595 }
Daniel Lezcanoc176b102017-10-19 19:05:43 +0200596
kongxinwei9a5238a2015-05-20 19:16:37 +0800597 return 0;
kongxinwei9a5238a2015-05-20 19:16:37 +0800598}
599
Uwe Kleine-König6abe2f02023-09-27 21:37:12 +0200600static void hisi_thermal_remove(struct platform_device *pdev)
kongxinwei9a5238a2015-05-20 19:16:37 +0800601{
602 struct hisi_thermal_data *data = platform_get_drvdata(pdev);
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200603 int i;
kongxinwei9a5238a2015-05-20 19:16:37 +0800604
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200605 for (i = 0; i < data->nr_sensors; i++) {
606 struct hisi_thermal_sensor *sensor = &data->sensor[i];
Kevin Wangtaoa160a462017-10-22 10:54:34 +0200607
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200608 hisi_thermal_toggle_sensor(sensor, false);
609 data->ops->disable_sensor(sensor);
610 }
kongxinwei9a5238a2015-05-20 19:16:37 +0800611}
612
kongxinwei9a5238a2015-05-20 19:16:37 +0800613static int hisi_thermal_suspend(struct device *dev)
614{
615 struct hisi_thermal_data *data = dev_get_drvdata(dev);
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200616 int i;
kongxinwei9a5238a2015-05-20 19:16:37 +0800617
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200618 for (i = 0; i < data->nr_sensors; i++)
619 data->ops->disable_sensor(&data->sensor[i]);
kongxinwei9a5238a2015-05-20 19:16:37 +0800620
kongxinwei9a5238a2015-05-20 19:16:37 +0800621 return 0;
622}
623
624static int hisi_thermal_resume(struct device *dev)
625{
626 struct hisi_thermal_data *data = dev_get_drvdata(dev);
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200627 int i, ret = 0;
kongxinwei9a5238a2015-05-20 19:16:37 +0800628
Daniel Lezcano7edc5e42018-09-25 11:03:04 +0200629 for (i = 0; i < data->nr_sensors; i++)
630 ret |= data->ops->enable_sensor(&data->sensor[i]);
631
632 return ret;
kongxinwei9a5238a2015-05-20 19:16:37 +0800633}
kongxinwei9a5238a2015-05-20 19:16:37 +0800634
Hesham Almatary7bb732f2022-03-24 10:34:43 +0000635static DEFINE_SIMPLE_DEV_PM_OPS(hisi_thermal_pm_ops,
kongxinwei9a5238a2015-05-20 19:16:37 +0800636 hisi_thermal_suspend, hisi_thermal_resume);
637
638static struct platform_driver hisi_thermal_driver = {
639 .driver = {
640 .name = "hisi_thermal",
Hesham Almatary7bb732f2022-03-24 10:34:43 +0000641 .pm = pm_sleep_ptr(&hisi_thermal_pm_ops),
kongxinwei9a5238a2015-05-20 19:16:37 +0800642 .of_match_table = of_hisi_thermal_match,
643 },
644 .probe = hisi_thermal_probe,
Uwe Kleine-König6abe2f02023-09-27 21:37:12 +0200645 .remove_new = hisi_thermal_remove,
kongxinwei9a5238a2015-05-20 19:16:37 +0800646};
647
648module_platform_driver(hisi_thermal_driver);
649
650MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
651MODULE_AUTHOR("Leo Yan <leo.yan@linaro.org>");
Hao Fang4481b392021-03-30 14:45:33 +0800652MODULE_DESCRIPTION("HiSilicon thermal driver");
kongxinwei9a5238a2015-05-20 19:16:37 +0800653MODULE_LICENSE("GPL v2");