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Commit 20f0af75 authored by Caesar Wang's avatar Caesar Wang Committed by Eduardo Valentin
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thermal: rockchip: Support the RK3368 SoCs in thermal driver 



The RK3368 SoCs support to 2 channel TS-ADC, the temperature criteria
of each channel can be configurable.

The system has two Temperature Sensors, channel 0 is for CPU,
and channel 1 is for GPU.

Signed-off-by: default avatarCaesar Wang <wxt@rock-chips.com>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent 437df217

drivers/thermal/rockchip_thermal.c

+72 −0
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd

 *

 * Copyright (c) 2015, Fuzhou Rockchip Electronics Co., Ltd

 * Caesar Wang <wxt@rock-chips.com>

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.
@@ -153,6 +156,8 @@ struct rockchip_thermal_data { 
#define TSADCV2_INT_PD_CLEAR_MASK		~BIT(8)



#define TSADCV2_DATA_MASK			0xfff

#define TSADCV3_DATA_MASK			0x3ff



#define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT	4

#define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT	4

#define TSADCV2_AUTO_PERIOD_TIME		250 /* msec */
@@ -201,6 +206,45 @@ static const struct tsadc_table v2_code_table[] = { 
	{3421, 125000},

};



static const struct tsadc_table v3_code_table[] = {

	{0, -40000},

	{106, -40000},

	{108, -35000},

	{110, -30000},

	{112, -25000},

	{114, -20000},

	{116, -15000},

	{118, -10000},

	{120, -5000},

	{122, 0},

	{124, 5000},

	{126, 10000},

	{128, 15000},

	{130, 20000},

	{132, 25000},

	{134, 30000},

	{136, 35000},

	{138, 40000},

	{140, 45000},

	{142, 50000},

	{144, 55000},

	{146, 60000},

	{148, 65000},

	{150, 70000},

	{152, 75000},

	{154, 80000},

	{156, 85000},

	{158, 90000},

	{160, 95000},

	{162, 100000},

	{163, 105000},

	{165, 110000},

	{167, 115000},

	{169, 120000},

	{171, 125000},

	{TSADCV3_DATA_MASK, 125000},

};



static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table,

				   int temp)

{
@@ -409,11 +453,39 @@ static const struct rockchip_tsadc_chip rk3288_tsadc_data = { 
	},

};



static const struct rockchip_tsadc_chip rk3368_tsadc_data = {

	.chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */

	.chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */

	.chn_num = 2, /* two channels for tsadc */



	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */

	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */

	.tshut_temp = 95000,



	.initialize = rk_tsadcv2_initialize,

	.irq_ack = rk_tsadcv2_irq_ack,

	.control = rk_tsadcv2_control,

	.get_temp = rk_tsadcv2_get_temp,

	.set_tshut_temp = rk_tsadcv2_tshut_temp,

	.set_tshut_mode = rk_tsadcv2_tshut_mode,



	.table = {

		.id = v3_code_table,

		.length = ARRAY_SIZE(v3_code_table),

		.data_mask = TSADCV3_DATA_MASK,

		.mode = ADC_INCREMENT,

	},

};



static const struct of_device_id of_rockchip_thermal_match[] = {

	{

		.compatible = "rockchip,rk3288-tsadc",

		.data = (void *)&rk3288_tsadc_data,

	},

	{

		.compatible = "rockchip,rk3368-tsadc",

		.data = (void *)&rk3368_tsadc_data,

	},

	{ /* end */ },

};

MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match);