2 * exynos_tmu.c - Samsung EXYNOS TMU (Thermal Management Unit)
4 * Copyright (C) 2011 Samsung Electronics
5 * Donggeun Kim <dg77.kim@samsung.com>
6 * Amit Daniel Kachhap <amit.kachhap@linaro.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include <linux/clk.h>
26 #include <linux/interrupt.h>
27 #include <linux/module.h>
29 #include <linux/of_address.h>
30 #include <linux/of_irq.h>
31 #include <linux/platform_device.h>
32 #include <linux/regulator/consumer.h>
34 #include "exynos_thermal_common.h"
35 #include "exynos_tmu.h"
36 #include "exynos_tmu_data.h"
39 * struct exynos_tmu_data : A structure to hold the private data of the TMU
41 * @id: identifier of the one instance of the TMU controller.
42 * @pdata: pointer to the tmu platform/configuration data
43 * @base: base address of the single instance of the TMU controller.
44 * @base_second: base address of the common registers of the TMU controller.
45 * @irq: irq number of the TMU controller.
46 * @soc: id of the SOC type.
47 * @irq_work: pointer to the irq work structure.
48 * @lock: lock to implement synchronization.
49 * @clk: pointer to the clock structure.
50 * @clk_sec: pointer to the clock structure for accessing the base_second.
51 * @temp_error1: fused value of the first point trim.
52 * @temp_error2: fused value of the second point trim.
53 * @regulator: pointer to the TMU regulator structure.
54 * @reg_conf: pointer to structure to register with core thermal.
56 struct exynos_tmu_data
{
58 struct exynos_tmu_platform_data
*pdata
;
60 void __iomem
*base_second
;
63 struct work_struct irq_work
;
65 struct clk
*clk
, *clk_sec
;
66 u8 temp_error1
, temp_error2
;
67 struct regulator
*regulator
;
68 struct thermal_sensor_conf
*reg_conf
;
72 * TMU treats temperature as a mapped temperature code.
73 * The temperature is converted differently depending on the calibration type.
75 static int temp_to_code(struct exynos_tmu_data
*data
, u8 temp
)
77 struct exynos_tmu_platform_data
*pdata
= data
->pdata
;
80 switch (pdata
->cal_type
) {
81 case TYPE_TWO_POINT_TRIMMING
:
82 temp_code
= (temp
- pdata
->first_point_trim
) *
83 (data
->temp_error2
- data
->temp_error1
) /
84 (pdata
->second_point_trim
- pdata
->first_point_trim
) +
87 case TYPE_ONE_POINT_TRIMMING
:
88 temp_code
= temp
+ data
->temp_error1
- pdata
->first_point_trim
;
91 temp_code
= temp
+ pdata
->default_temp_offset
;
99 * Calculate a temperature value from a temperature code.
100 * The unit of the temperature is degree Celsius.
102 static int code_to_temp(struct exynos_tmu_data
*data
, u8 temp_code
)
104 struct exynos_tmu_platform_data
*pdata
= data
->pdata
;
107 switch (pdata
->cal_type
) {
108 case TYPE_TWO_POINT_TRIMMING
:
109 temp
= (temp_code
- data
->temp_error1
) *
110 (pdata
->second_point_trim
- pdata
->first_point_trim
) /
111 (data
->temp_error2
- data
->temp_error1
) +
112 pdata
->first_point_trim
;
114 case TYPE_ONE_POINT_TRIMMING
:
115 temp
= temp_code
- data
->temp_error1
+ pdata
->first_point_trim
;
118 temp
= temp_code
- pdata
->default_temp_offset
;
125 static void exynos_tmu_clear_irqs(struct exynos_tmu_data
*data
)
127 const struct exynos_tmu_registers
*reg
= data
->pdata
->registers
;
128 unsigned int val_irq
;
130 val_irq
= readl(data
->base
+ reg
->tmu_intstat
);
132 * Clear the interrupts. Please note that the documentation for
133 * Exynos3250, Exynos4412, Exynos5250 and Exynos5260 incorrectly
134 * states that INTCLEAR register has a different placing of bits
135 * responsible for FALL IRQs than INTSTAT register. Exynos5420
136 * and Exynos5440 documentation is correct (Exynos4210 doesn't
137 * support FALL IRQs at all).
139 writel(val_irq
, data
->base
+ reg
->tmu_intclear
);
142 static int exynos_tmu_initialize(struct platform_device
*pdev
)
144 struct exynos_tmu_data
*data
= platform_get_drvdata(pdev
);
145 struct exynos_tmu_platform_data
*pdata
= data
->pdata
;
146 const struct exynos_tmu_registers
*reg
= pdata
->registers
;
147 unsigned int status
, trim_info
= 0, con
, ctrl
;
148 unsigned int rising_threshold
= 0, falling_threshold
= 0;
149 int ret
= 0, threshold_code
, i
;
151 mutex_lock(&data
->lock
);
152 clk_enable(data
->clk
);
153 if (!IS_ERR(data
->clk_sec
))
154 clk_enable(data
->clk_sec
);
156 if (TMU_SUPPORTS(pdata
, READY_STATUS
)) {
157 status
= readb(data
->base
+ reg
->tmu_status
);
164 if (TMU_SUPPORTS(pdata
, TRIM_RELOAD
)) {
165 for (i
= 0; i
< reg
->triminfo_ctrl_count
; i
++) {
166 if (pdata
->triminfo_reload
[i
]) {
167 ctrl
= readl(data
->base
+
168 reg
->triminfo_ctrl
[i
]);
169 ctrl
|= pdata
->triminfo_reload
[i
];
170 writel(ctrl
, data
->base
+
171 reg
->triminfo_ctrl
[i
]);
176 /* Save trimming info in order to perform calibration */
177 if (data
->soc
== SOC_ARCH_EXYNOS5440
) {
179 * For exynos5440 soc triminfo value is swapped between TMU0 and
180 * TMU2, so the below logic is needed.
184 trim_info
= readl(data
->base
+
185 EXYNOS5440_EFUSE_SWAP_OFFSET
+ reg
->triminfo_data
);
188 trim_info
= readl(data
->base
+ reg
->triminfo_data
);
191 trim_info
= readl(data
->base
-
192 EXYNOS5440_EFUSE_SWAP_OFFSET
+ reg
->triminfo_data
);
195 /* On exynos5420 the triminfo register is in the shared space */
196 if (data
->soc
== SOC_ARCH_EXYNOS5420_TRIMINFO
)
197 trim_info
= readl(data
->base_second
+
200 trim_info
= readl(data
->base
+ reg
->triminfo_data
);
202 data
->temp_error1
= trim_info
& EXYNOS_TMU_TEMP_MASK
;
203 data
->temp_error2
= ((trim_info
>> EXYNOS_TRIMINFO_85_SHIFT
) &
204 EXYNOS_TMU_TEMP_MASK
);
206 if (!data
->temp_error1
||
207 (pdata
->min_efuse_value
> data
->temp_error1
) ||
208 (data
->temp_error1
> pdata
->max_efuse_value
))
209 data
->temp_error1
= pdata
->efuse_value
& EXYNOS_TMU_TEMP_MASK
;
211 if (!data
->temp_error2
)
213 (pdata
->efuse_value
>> EXYNOS_TRIMINFO_85_SHIFT
) &
214 EXYNOS_TMU_TEMP_MASK
;
216 rising_threshold
= readl(data
->base
+ reg
->threshold_th0
);
218 if (data
->soc
== SOC_ARCH_EXYNOS4210
) {
219 /* Write temperature code for threshold */
220 threshold_code
= temp_to_code(data
, pdata
->threshold
);
221 writeb(threshold_code
,
222 data
->base
+ reg
->threshold_temp
);
223 for (i
= 0; i
< pdata
->non_hw_trigger_levels
; i
++)
224 writeb(pdata
->trigger_levels
[i
], data
->base
+
225 reg
->threshold_th0
+ i
* sizeof(reg
->threshold_th0
));
227 exynos_tmu_clear_irqs(data
);
229 /* Write temperature code for rising and falling threshold */
230 for (i
= 0; i
< pdata
->non_hw_trigger_levels
; i
++) {
231 threshold_code
= temp_to_code(data
,
232 pdata
->trigger_levels
[i
]);
233 rising_threshold
&= ~(0xff << 8 * i
);
234 rising_threshold
|= threshold_code
<< 8 * i
;
235 if (pdata
->threshold_falling
) {
236 threshold_code
= temp_to_code(data
,
237 pdata
->trigger_levels
[i
] -
238 pdata
->threshold_falling
);
239 falling_threshold
|= threshold_code
<< 8 * i
;
243 writel(rising_threshold
,
244 data
->base
+ reg
->threshold_th0
);
245 writel(falling_threshold
,
246 data
->base
+ reg
->threshold_th1
);
248 exynos_tmu_clear_irqs(data
);
250 /* if last threshold limit is also present */
251 i
= pdata
->max_trigger_level
- 1;
252 if (pdata
->trigger_levels
[i
] &&
253 (pdata
->trigger_type
[i
] == HW_TRIP
)) {
254 threshold_code
= temp_to_code(data
,
255 pdata
->trigger_levels
[i
]);
256 if (i
== EXYNOS_MAX_TRIGGER_PER_REG
- 1) {
257 /* 1-4 level to be assigned in th0 reg */
258 rising_threshold
&= ~(0xff << 8 * i
);
259 rising_threshold
|= threshold_code
<< 8 * i
;
260 writel(rising_threshold
,
261 data
->base
+ reg
->threshold_th0
);
262 } else if (i
== EXYNOS_MAX_TRIGGER_PER_REG
) {
263 /* 5th level to be assigned in th2 reg */
265 threshold_code
<< reg
->threshold_th3_l0_shift
;
266 writel(rising_threshold
,
267 data
->base
+ reg
->threshold_th2
);
269 con
= readl(data
->base
+ reg
->tmu_ctrl
);
270 con
|= (1 << reg
->therm_trip_en_shift
);
271 writel(con
, data
->base
+ reg
->tmu_ctrl
);
274 /*Clear the PMIN in the common TMU register*/
275 if (reg
->tmu_pmin
&& !data
->id
)
276 writel(0, data
->base_second
+ reg
->tmu_pmin
);
278 clk_disable(data
->clk
);
279 mutex_unlock(&data
->lock
);
280 if (!IS_ERR(data
->clk_sec
))
281 clk_disable(data
->clk_sec
);
286 static void exynos_tmu_control(struct platform_device
*pdev
, bool on
)
288 struct exynos_tmu_data
*data
= platform_get_drvdata(pdev
);
289 struct exynos_tmu_platform_data
*pdata
= data
->pdata
;
290 const struct exynos_tmu_registers
*reg
= pdata
->registers
;
291 unsigned int con
, interrupt_en
;
293 mutex_lock(&data
->lock
);
294 clk_enable(data
->clk
);
296 con
= readl(data
->base
+ reg
->tmu_ctrl
);
299 con
|= (pdata
->test_mux
<< reg
->test_mux_addr_shift
);
301 con
&= ~(EXYNOS_TMU_REF_VOLTAGE_MASK
<< EXYNOS_TMU_REF_VOLTAGE_SHIFT
);
302 con
|= pdata
->reference_voltage
<< EXYNOS_TMU_REF_VOLTAGE_SHIFT
;
304 con
&= ~(EXYNOS_TMU_BUF_SLOPE_SEL_MASK
<< EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT
);
305 con
|= (pdata
->gain
<< EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT
);
307 if (pdata
->noise_cancel_mode
) {
308 con
&= ~(reg
->therm_trip_mode_mask
<<
309 reg
->therm_trip_mode_shift
);
310 con
|= (pdata
->noise_cancel_mode
<< reg
->therm_trip_mode_shift
);
314 con
|= (1 << EXYNOS_TMU_CORE_EN_SHIFT
);
316 pdata
->trigger_enable
[3] << reg
->inten_rise3_shift
|
317 pdata
->trigger_enable
[2] << reg
->inten_rise2_shift
|
318 pdata
->trigger_enable
[1] << reg
->inten_rise1_shift
|
319 pdata
->trigger_enable
[0] << reg
->inten_rise0_shift
;
320 if (TMU_SUPPORTS(pdata
, FALLING_TRIP
))
322 interrupt_en
<< reg
->inten_fall0_shift
;
324 con
&= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT
);
325 interrupt_en
= 0; /* Disable all interrupts */
327 writel(interrupt_en
, data
->base
+ reg
->tmu_inten
);
328 writel(con
, data
->base
+ reg
->tmu_ctrl
);
330 clk_disable(data
->clk
);
331 mutex_unlock(&data
->lock
);
334 static int exynos_tmu_read(struct exynos_tmu_data
*data
)
336 struct exynos_tmu_platform_data
*pdata
= data
->pdata
;
337 const struct exynos_tmu_registers
*reg
= pdata
->registers
;
341 mutex_lock(&data
->lock
);
342 clk_enable(data
->clk
);
344 temp_code
= readb(data
->base
+ reg
->tmu_cur_temp
);
346 if (data
->soc
== SOC_ARCH_EXYNOS4210
)
347 /* temp_code should range between 75 and 175 */
348 if (temp_code
< 75 || temp_code
> 175) {
353 temp
= code_to_temp(data
, temp_code
);
355 clk_disable(data
->clk
);
356 mutex_unlock(&data
->lock
);
361 #ifdef CONFIG_THERMAL_EMULATION
362 static int exynos_tmu_set_emulation(void *drv_data
, unsigned long temp
)
364 struct exynos_tmu_data
*data
= drv_data
;
365 struct exynos_tmu_platform_data
*pdata
= data
->pdata
;
366 const struct exynos_tmu_registers
*reg
= pdata
->registers
;
370 if (!TMU_SUPPORTS(pdata
, EMULATION
))
373 if (temp
&& temp
< MCELSIUS
)
376 mutex_lock(&data
->lock
);
377 clk_enable(data
->clk
);
379 val
= readl(data
->base
+ reg
->emul_con
);
384 if (TMU_SUPPORTS(pdata
, EMUL_TIME
)) {
385 val
&= ~(EXYNOS_EMUL_TIME_MASK
<< reg
->emul_time_shift
);
386 val
|= (EXYNOS_EMUL_TIME
<< reg
->emul_time_shift
);
388 val
&= ~(EXYNOS_EMUL_DATA_MASK
<< reg
->emul_temp_shift
);
389 val
|= (temp_to_code(data
, temp
) << reg
->emul_temp_shift
) |
392 val
&= ~EXYNOS_EMUL_ENABLE
;
395 writel(val
, data
->base
+ reg
->emul_con
);
397 clk_disable(data
->clk
);
398 mutex_unlock(&data
->lock
);
404 static int exynos_tmu_set_emulation(void *drv_data
, unsigned long temp
)
406 #endif/*CONFIG_THERMAL_EMULATION*/
408 static void exynos_tmu_work(struct work_struct
*work
)
410 struct exynos_tmu_data
*data
= container_of(work
,
411 struct exynos_tmu_data
, irq_work
);
412 struct exynos_tmu_platform_data
*pdata
= data
->pdata
;
413 const struct exynos_tmu_registers
*reg
= pdata
->registers
;
414 unsigned int val_type
;
416 if (!IS_ERR(data
->clk_sec
))
417 clk_enable(data
->clk_sec
);
418 /* Find which sensor generated this interrupt */
419 if (reg
->tmu_irqstatus
) {
420 val_type
= readl(data
->base_second
+ reg
->tmu_irqstatus
);
421 if (!((val_type
>> data
->id
) & 0x1))
424 if (!IS_ERR(data
->clk_sec
))
425 clk_disable(data
->clk_sec
);
427 exynos_report_trigger(data
->reg_conf
);
428 mutex_lock(&data
->lock
);
429 clk_enable(data
->clk
);
431 /* TODO: take action based on particular interrupt */
432 exynos_tmu_clear_irqs(data
);
434 clk_disable(data
->clk
);
435 mutex_unlock(&data
->lock
);
437 enable_irq(data
->irq
);
440 static irqreturn_t
exynos_tmu_irq(int irq
, void *id
)
442 struct exynos_tmu_data
*data
= id
;
444 disable_irq_nosync(irq
);
445 schedule_work(&data
->irq_work
);
450 static const struct of_device_id exynos_tmu_match
[] = {
452 .compatible
= "samsung,exynos3250-tmu",
453 .data
= (void *)EXYNOS3250_TMU_DRV_DATA
,
456 .compatible
= "samsung,exynos4210-tmu",
457 .data
= (void *)EXYNOS4210_TMU_DRV_DATA
,
460 .compatible
= "samsung,exynos4412-tmu",
461 .data
= (void *)EXYNOS4412_TMU_DRV_DATA
,
464 .compatible
= "samsung,exynos5250-tmu",
465 .data
= (void *)EXYNOS5250_TMU_DRV_DATA
,
468 .compatible
= "samsung,exynos5260-tmu",
469 .data
= (void *)EXYNOS5260_TMU_DRV_DATA
,
472 .compatible
= "samsung,exynos5420-tmu",
473 .data
= (void *)EXYNOS5420_TMU_DRV_DATA
,
476 .compatible
= "samsung,exynos5420-tmu-ext-triminfo",
477 .data
= (void *)EXYNOS5420_TMU_DRV_DATA
,
480 .compatible
= "samsung,exynos5440-tmu",
481 .data
= (void *)EXYNOS5440_TMU_DRV_DATA
,
485 MODULE_DEVICE_TABLE(of
, exynos_tmu_match
);
487 static inline struct exynos_tmu_platform_data
*exynos_get_driver_data(
488 struct platform_device
*pdev
, int id
)
490 struct exynos_tmu_init_data
*data_table
;
491 struct exynos_tmu_platform_data
*tmu_data
;
492 const struct of_device_id
*match
;
494 match
= of_match_node(exynos_tmu_match
, pdev
->dev
.of_node
);
497 data_table
= (struct exynos_tmu_init_data
*) match
->data
;
498 if (!data_table
|| id
>= data_table
->tmu_count
)
500 tmu_data
= data_table
->tmu_data
;
501 return (struct exynos_tmu_platform_data
*) (tmu_data
+ id
);
504 static int exynos_map_dt_data(struct platform_device
*pdev
)
506 struct exynos_tmu_data
*data
= platform_get_drvdata(pdev
);
507 struct exynos_tmu_platform_data
*pdata
;
511 if (!data
|| !pdev
->dev
.of_node
)
515 * Try enabling the regulator if found
516 * TODO: Add regulator as an SOC feature, so that regulator enable
517 * is a compulsory call.
519 data
->regulator
= devm_regulator_get(&pdev
->dev
, "vtmu");
520 if (!IS_ERR(data
->regulator
)) {
521 ret
= regulator_enable(data
->regulator
);
523 dev_err(&pdev
->dev
, "failed to enable vtmu\n");
527 dev_info(&pdev
->dev
, "Regulator node (vtmu) not found\n");
530 data
->id
= of_alias_get_id(pdev
->dev
.of_node
, "tmuctrl");
534 data
->irq
= irq_of_parse_and_map(pdev
->dev
.of_node
, 0);
535 if (data
->irq
<= 0) {
536 dev_err(&pdev
->dev
, "failed to get IRQ\n");
540 if (of_address_to_resource(pdev
->dev
.of_node
, 0, &res
)) {
541 dev_err(&pdev
->dev
, "failed to get Resource 0\n");
545 data
->base
= devm_ioremap(&pdev
->dev
, res
.start
, resource_size(&res
));
547 dev_err(&pdev
->dev
, "Failed to ioremap memory\n");
548 return -EADDRNOTAVAIL
;
551 pdata
= exynos_get_driver_data(pdev
, data
->id
);
553 dev_err(&pdev
->dev
, "No platform init data supplied.\n");
558 * Check if the TMU shares some registers and then try to map the
559 * memory of common registers.
561 if (!TMU_SUPPORTS(pdata
, ADDRESS_MULTIPLE
))
564 if (of_address_to_resource(pdev
->dev
.of_node
, 1, &res
)) {
565 dev_err(&pdev
->dev
, "failed to get Resource 1\n");
569 data
->base_second
= devm_ioremap(&pdev
->dev
, res
.start
,
570 resource_size(&res
));
571 if (!data
->base_second
) {
572 dev_err(&pdev
->dev
, "Failed to ioremap memory\n");
579 static int exynos_tmu_probe(struct platform_device
*pdev
)
581 struct exynos_tmu_data
*data
;
582 struct exynos_tmu_platform_data
*pdata
;
583 struct thermal_sensor_conf
*sensor_conf
;
586 data
= devm_kzalloc(&pdev
->dev
, sizeof(struct exynos_tmu_data
),
591 platform_set_drvdata(pdev
, data
);
592 mutex_init(&data
->lock
);
594 ret
= exynos_map_dt_data(pdev
);
600 INIT_WORK(&data
->irq_work
, exynos_tmu_work
);
602 data
->clk
= devm_clk_get(&pdev
->dev
, "tmu_apbif");
603 if (IS_ERR(data
->clk
)) {
604 dev_err(&pdev
->dev
, "Failed to get clock\n");
605 return PTR_ERR(data
->clk
);
608 data
->clk_sec
= devm_clk_get(&pdev
->dev
, "tmu_triminfo_apbif");
609 if (IS_ERR(data
->clk_sec
)) {
610 if (data
->soc
== SOC_ARCH_EXYNOS5420_TRIMINFO
) {
611 dev_err(&pdev
->dev
, "Failed to get triminfo clock\n");
612 return PTR_ERR(data
->clk_sec
);
615 ret
= clk_prepare(data
->clk_sec
);
617 dev_err(&pdev
->dev
, "Failed to get clock\n");
622 ret
= clk_prepare(data
->clk
);
624 dev_err(&pdev
->dev
, "Failed to get clock\n");
628 if (pdata
->type
== SOC_ARCH_EXYNOS3250
||
629 pdata
->type
== SOC_ARCH_EXYNOS4210
||
630 pdata
->type
== SOC_ARCH_EXYNOS4412
||
631 pdata
->type
== SOC_ARCH_EXYNOS5250
||
632 pdata
->type
== SOC_ARCH_EXYNOS5260
||
633 pdata
->type
== SOC_ARCH_EXYNOS5420_TRIMINFO
||
634 pdata
->type
== SOC_ARCH_EXYNOS5440
)
635 data
->soc
= pdata
->type
;
638 dev_err(&pdev
->dev
, "Platform not supported\n");
642 ret
= exynos_tmu_initialize(pdev
);
644 dev_err(&pdev
->dev
, "Failed to initialize TMU\n");
648 exynos_tmu_control(pdev
, true);
650 /* Allocate a structure to register with the exynos core thermal */
651 sensor_conf
= devm_kzalloc(&pdev
->dev
,
652 sizeof(struct thermal_sensor_conf
), GFP_KERNEL
);
657 sprintf(sensor_conf
->name
, "therm_zone%d", data
->id
);
658 sensor_conf
->read_temperature
= (int (*)(void *))exynos_tmu_read
;
659 sensor_conf
->write_emul_temp
=
660 (int (*)(void *, unsigned long))exynos_tmu_set_emulation
;
661 sensor_conf
->driver_data
= data
;
662 sensor_conf
->trip_data
.trip_count
= pdata
->trigger_enable
[0] +
663 pdata
->trigger_enable
[1] + pdata
->trigger_enable
[2]+
664 pdata
->trigger_enable
[3];
666 for (i
= 0; i
< sensor_conf
->trip_data
.trip_count
; i
++) {
667 sensor_conf
->trip_data
.trip_val
[i
] =
668 pdata
->threshold
+ pdata
->trigger_levels
[i
];
669 sensor_conf
->trip_data
.trip_type
[i
] =
670 pdata
->trigger_type
[i
];
673 sensor_conf
->trip_data
.trigger_falling
= pdata
->threshold_falling
;
675 sensor_conf
->cooling_data
.freq_clip_count
= pdata
->freq_tab_count
;
676 for (i
= 0; i
< pdata
->freq_tab_count
; i
++) {
677 sensor_conf
->cooling_data
.freq_data
[i
].freq_clip_max
=
678 pdata
->freq_tab
[i
].freq_clip_max
;
679 sensor_conf
->cooling_data
.freq_data
[i
].temp_level
=
680 pdata
->freq_tab
[i
].temp_level
;
682 sensor_conf
->dev
= &pdev
->dev
;
683 /* Register the sensor with thermal management interface */
684 ret
= exynos_register_thermal(sensor_conf
);
686 dev_err(&pdev
->dev
, "Failed to register thermal interface\n");
689 data
->reg_conf
= sensor_conf
;
691 ret
= devm_request_irq(&pdev
->dev
, data
->irq
, exynos_tmu_irq
,
692 IRQF_TRIGGER_RISING
| IRQF_SHARED
, dev_name(&pdev
->dev
), data
);
694 dev_err(&pdev
->dev
, "Failed to request irq: %d\n", data
->irq
);
700 clk_unprepare(data
->clk
);
702 if (!IS_ERR(data
->clk_sec
))
703 clk_unprepare(data
->clk_sec
);
707 static int exynos_tmu_remove(struct platform_device
*pdev
)
709 struct exynos_tmu_data
*data
= platform_get_drvdata(pdev
);
711 exynos_unregister_thermal(data
->reg_conf
);
713 exynos_tmu_control(pdev
, false);
715 clk_unprepare(data
->clk
);
716 if (!IS_ERR(data
->clk_sec
))
717 clk_unprepare(data
->clk_sec
);
719 if (!IS_ERR(data
->regulator
))
720 regulator_disable(data
->regulator
);
725 #ifdef CONFIG_PM_SLEEP
726 static int exynos_tmu_suspend(struct device
*dev
)
728 exynos_tmu_control(to_platform_device(dev
), false);
733 static int exynos_tmu_resume(struct device
*dev
)
735 struct platform_device
*pdev
= to_platform_device(dev
);
737 exynos_tmu_initialize(pdev
);
738 exynos_tmu_control(pdev
, true);
743 static SIMPLE_DEV_PM_OPS(exynos_tmu_pm
,
744 exynos_tmu_suspend
, exynos_tmu_resume
);
745 #define EXYNOS_TMU_PM (&exynos_tmu_pm)
747 #define EXYNOS_TMU_PM NULL
750 static struct platform_driver exynos_tmu_driver
= {
752 .name
= "exynos-tmu",
753 .owner
= THIS_MODULE
,
755 .of_match_table
= exynos_tmu_match
,
757 .probe
= exynos_tmu_probe
,
758 .remove
= exynos_tmu_remove
,
761 module_platform_driver(exynos_tmu_driver
);
763 MODULE_DESCRIPTION("EXYNOS TMU Driver");
764 MODULE_AUTHOR("Donggeun Kim <dg77.kim@samsung.com>");
765 MODULE_LICENSE("GPL");
766 MODULE_ALIAS("platform:exynos-tmu");