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/*
* OMAP5 thermal driver.
*
* Copyright (C) 2011-2012 Texas Instruments Inc.
* Contact:
* Eduardo Valentin <eduardo.valentin@ti.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include "ti-thermal.h"
#include "ti-bandgap.h"
#include "omap5xxx-bandgap.h"
/*
* OMAP5430 has three instances of thermal sensor for MPU, GPU & CORE,
* need to describe the individual registers and bit fields.
*/
/*
* OMAP5430 MPU thermal sensor register offset and bit-fields
*/
static struct temp_sensor_registers
omap5430_mpu_temp_sensor_registers = {
.temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_MPU_OFFSET,
.bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK,
.bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK,
.bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK,
.bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET,
.mask_hot_mask = OMAP5430_MASK_HOT_MPU_MASK,
.mask_cold_mask = OMAP5430_MASK_COLD_MPU_MASK,
.mask_sidlemode_mask = OMAP5430_MASK_SIDLEMODE_MASK,
.mask_counter_delay_mask = OMAP5430_MASK_COUNTER_DELAY_MASK,
.mask_freeze_mask = OMAP5430_MASK_FREEZE_MPU_MASK,
.mask_clear_mask = OMAP5430_MASK_CLEAR_MPU_MASK,
.mask_clear_accum_mask = OMAP5430_MASK_CLEAR_ACCUM_MPU_MASK,
.bgap_counter = OMAP5430_BGAP_CTRL_OFFSET,
.counter_mask = OMAP5430_COUNTER_MASK,
.bgap_threshold = OMAP5430_BGAP_THRESHOLD_MPU_OFFSET,
.threshold_thot_mask = OMAP5430_T_HOT_MASK,
.threshold_tcold_mask = OMAP5430_T_COLD_MASK,
.tshut_threshold = OMAP5430_BGAP_TSHUT_MPU_OFFSET,
.tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK,
.tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK,
.bgap_status = OMAP5430_BGAP_STATUS_OFFSET,
.status_clean_stop_mask = 0x0,
.status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK,
.status_hot_mask = OMAP5430_HOT_MPU_FLAG_MASK,
.status_cold_mask = OMAP5430_COLD_MPU_FLAG_MASK,
.bgap_cumul_dtemp = OMAP5430_BGAP_CUMUL_DTEMP_MPU_OFFSET,
.ctrl_dtemp_0 = OMAP5430_BGAP_DTEMP_MPU_0_OFFSET,
.ctrl_dtemp_1 = OMAP5430_BGAP_DTEMP_MPU_1_OFFSET,
.ctrl_dtemp_2 = OMAP5430_BGAP_DTEMP_MPU_2_OFFSET,
.ctrl_dtemp_3 = OMAP5430_BGAP_DTEMP_MPU_3_OFFSET,
.ctrl_dtemp_4 = OMAP5430_BGAP_DTEMP_MPU_4_OFFSET,
.bgap_efuse = OMAP5430_FUSE_OPP_BGAP_MPU,
};
/*
* OMAP5430 GPU thermal sensor register offset and bit-fields
*/
static struct temp_sensor_registers
omap5430_gpu_temp_sensor_registers = {
.temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_GPU_OFFSET,
.bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK,
.bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK,
.bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK,
.bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET,
.mask_hot_mask = OMAP5430_MASK_HOT_GPU_MASK,
.mask_cold_mask = OMAP5430_MASK_COLD_GPU_MASK,
.mask_sidlemode_mask = OMAP5430_MASK_SIDLEMODE_MASK,
.mask_counter_delay_mask = OMAP5430_MASK_COUNTER_DELAY_MASK,
.mask_freeze_mask = OMAP5430_MASK_FREEZE_GPU_MASK,
.mask_clear_mask = OMAP5430_MASK_CLEAR_GPU_MASK,
.mask_clear_accum_mask = OMAP5430_MASK_CLEAR_ACCUM_GPU_MASK,
.bgap_counter = OMAP5430_BGAP_CTRL_OFFSET,
.counter_mask = OMAP5430_COUNTER_MASK,
.bgap_threshold = OMAP5430_BGAP_THRESHOLD_GPU_OFFSET,
.threshold_thot_mask = OMAP5430_T_HOT_MASK,
.threshold_tcold_mask = OMAP5430_T_COLD_MASK,
.tshut_threshold = OMAP5430_BGAP_TSHUT_GPU_OFFSET,
.tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK,
.tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK,
.bgap_status = OMAP5430_BGAP_STATUS_OFFSET,
.status_clean_stop_mask = 0x0,
.status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK,
.status_hot_mask = OMAP5430_HOT_GPU_FLAG_MASK,
.status_cold_mask = OMAP5430_COLD_GPU_FLAG_MASK,
.bgap_cumul_dtemp = OMAP5430_BGAP_CUMUL_DTEMP_GPU_OFFSET,
.ctrl_dtemp_0 = OMAP5430_BGAP_DTEMP_GPU_0_OFFSET,
.ctrl_dtemp_1 = OMAP5430_BGAP_DTEMP_GPU_1_OFFSET,
.ctrl_dtemp_2 = OMAP5430_BGAP_DTEMP_GPU_2_OFFSET,
.ctrl_dtemp_3 = OMAP5430_BGAP_DTEMP_GPU_3_OFFSET,
.ctrl_dtemp_4 = OMAP5430_BGAP_DTEMP_GPU_4_OFFSET,
.bgap_efuse = OMAP5430_FUSE_OPP_BGAP_GPU,
};
/*
* OMAP5430 CORE thermal sensor register offset and bit-fields
*/
static struct temp_sensor_registers
omap5430_core_temp_sensor_registers = {
.temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_CORE_OFFSET,
.bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK,
.bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK,
.bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK,
.bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET,
.mask_hot_mask = OMAP5430_MASK_HOT_CORE_MASK,
.mask_cold_mask = OMAP5430_MASK_COLD_CORE_MASK,
.mask_sidlemode_mask = OMAP5430_MASK_SIDLEMODE_MASK,
.mask_counter_delay_mask = OMAP5430_MASK_COUNTER_DELAY_MASK,
.mask_freeze_mask = OMAP5430_MASK_FREEZE_CORE_MASK,
.mask_clear_mask = OMAP5430_MASK_CLEAR_CORE_MASK,
.mask_clear_accum_mask = OMAP5430_MASK_CLEAR_ACCUM_CORE_MASK,
.bgap_counter = OMAP5430_BGAP_CTRL_OFFSET,
.counter_mask = OMAP5430_COUNTER_MASK,
.bgap_threshold = OMAP5430_BGAP_THRESHOLD_CORE_OFFSET,
.threshold_thot_mask = OMAP5430_T_HOT_MASK,
.threshold_tcold_mask = OMAP5430_T_COLD_MASK,
.tshut_threshold = OMAP5430_BGAP_TSHUT_CORE_OFFSET,
.tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK,
.tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK,
.bgap_status = OMAP5430_BGAP_STATUS_OFFSET,
.status_clean_stop_mask = 0x0,
.status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK,
.status_hot_mask = OMAP5430_HOT_CORE_FLAG_MASK,
.status_cold_mask = OMAP5430_COLD_CORE_FLAG_MASK,
.bgap_cumul_dtemp = OMAP5430_BGAP_CUMUL_DTEMP_CORE_OFFSET,
.ctrl_dtemp_0 = OMAP5430_BGAP_DTEMP_CORE_0_OFFSET,
.ctrl_dtemp_1 = OMAP5430_BGAP_DTEMP_CORE_1_OFFSET,
.ctrl_dtemp_2 = OMAP5430_BGAP_DTEMP_CORE_2_OFFSET,
.ctrl_dtemp_3 = OMAP5430_BGAP_DTEMP_CORE_3_OFFSET,
.ctrl_dtemp_4 = OMAP5430_BGAP_DTEMP_CORE_4_OFFSET,
.bgap_efuse = OMAP5430_FUSE_OPP_BGAP_CORE,
};
/* Thresholds and limits for OMAP5430 MPU temperature sensor */
static struct temp_sensor_data omap5430_mpu_temp_sensor_data = {
.tshut_hot = OMAP5430_MPU_TSHUT_HOT,
.tshut_cold = OMAP5430_MPU_TSHUT_COLD,
.t_hot = OMAP5430_MPU_T_HOT,
.t_cold = OMAP5430_MPU_T_COLD,
.min_freq = OMAP5430_MPU_MIN_FREQ,
.max_freq = OMAP5430_MPU_MAX_FREQ,
.max_temp = OMAP5430_MPU_MAX_TEMP,
.min_temp = OMAP5430_MPU_MIN_TEMP,
.hyst_val = OMAP5430_MPU_HYST_VAL,
.update_int1 = 1000,
.update_int2 = 2000,
};
/* Thresholds and limits for OMAP5430 GPU temperature sensor */
static struct temp_sensor_data omap5430_gpu_temp_sensor_data = {
.tshut_hot = OMAP5430_GPU_TSHUT_HOT,
.tshut_cold = OMAP5430_GPU_TSHUT_COLD,
.t_hot = OMAP5430_GPU_T_HOT,
.t_cold = OMAP5430_GPU_T_COLD,
.min_freq = OMAP5430_GPU_MIN_FREQ,
.max_freq = OMAP5430_GPU_MAX_FREQ,
.max_temp = OMAP5430_GPU_MAX_TEMP,
.min_temp = OMAP5430_GPU_MIN_TEMP,
.hyst_val = OMAP5430_GPU_HYST_VAL,
.update_int1 = 1000,
.update_int2 = 2000,
};
/* Thresholds and limits for OMAP5430 CORE temperature sensor */
static struct temp_sensor_data omap5430_core_temp_sensor_data = {
.tshut_hot = OMAP5430_CORE_TSHUT_HOT,
.tshut_cold = OMAP5430_CORE_TSHUT_COLD,
.t_hot = OMAP5430_CORE_T_HOT,
.t_cold = OMAP5430_CORE_T_COLD,
.min_freq = OMAP5430_CORE_MIN_FREQ,
.max_freq = OMAP5430_CORE_MAX_FREQ,
.max_temp = OMAP5430_CORE_MAX_TEMP,
.min_temp = OMAP5430_CORE_MIN_TEMP,
.hyst_val = OMAP5430_CORE_HYST_VAL,
.update_int1 = 1000,
.update_int2 = 2000,
};
/*
* OMAP54xx ES2.0 : Temperature values in milli degree celsius
* ADC code values from 540 to 945
*/
static int
omap5430_adc_to_temp[
OMAP5430_ADC_END_VALUE - OMAP5430_ADC_START_VALUE + 1] = {
/* Index 540 - 549 */
-40000, -40000, -40000, -40000, -39800, -39400, -39000, -38600, -38200,
-37800,
/* Index 550 - 559 */
-37400, -37000, -36600, -36200, -35800, -35300, -34700, -34200, -33800,
-33400,
/* Index 560 - 569 */
-33000, -32600, -32200, -31800, -31400, -31000, -30600, -30200, -29800,
-29400,
/* Index 570 - 579 */
-29000, -28600, -28200, -27700, -27100, -26600, -26200, -25800, -25400,
-25000,
/* Index 580 - 589 */
-24600, -24200, -23800, -23400, -23000, -22600, -22200, -21600, -21400,
-21000,
/* Index 590 - 599 */
-20500, -19900, -19400, -19000, -18600, -18200, -17800, -17400, -17000,
-16600,
/* Index 600 - 609 */
-16200, -15800, -15400, -15000, -14600, -14200, -13800, -13400, -13000,
-12500,
/* Index 610 - 619 */
-11900, -11400, -11000, -10600, -10200, -9800, -9400, -9000, -8600,
-8200,
/* Index 620 - 629 */
-7800, -7400, -7000, -6600, -6200, -5800, -5400, -5000, -4500, -3900,
/* Index 630 - 639 */
-3400, -3000, -2600, -2200, -1800, -1400, -1000, -600, -200, 200,
/* Index 640 - 649 */
600, 1000, 1400, 1800, 2200, 2600, 3000, 3400, 3900, 4500,
/* Index 650 - 659 */
5000, 5400, 5800, 6200
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