diff options
Diffstat (limited to 'drivers/thermal/samsung/exynos_tmu.h')
| -rw-r--r-- | drivers/thermal/samsung/exynos_tmu.h | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h new file mode 100644 index 000000000000..b364c9eee701 --- /dev/null +++ b/drivers/thermal/samsung/exynos_tmu.h @@ -0,0 +1,311 @@ +/* + * exynos_tmu.h - Samsung EXYNOS TMU (Thermal Management Unit) + * + * Copyright (C) 2011 Samsung Electronics + * Donggeun Kim <dg77.kim@samsung.com> + * Amit Daniel Kachhap <amit.daniel@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef _EXYNOS_TMU_H +#define _EXYNOS_TMU_H +#include <linux/cpu_cooling.h> + +#include "exynos_thermal_common.h" + +enum calibration_type { + TYPE_ONE_POINT_TRIMMING, + TYPE_ONE_POINT_TRIMMING_25, + TYPE_ONE_POINT_TRIMMING_85, + TYPE_TWO_POINT_TRIMMING, + TYPE_NONE, +}; + +enum calibration_mode { + SW_MODE, + HW_MODE, +}; + +enum soc_type { + SOC_ARCH_EXYNOS4210 = 1, + SOC_ARCH_EXYNOS, + SOC_ARCH_EXYNOS5440, +}; + +/** + * EXYNOS TMU supported features. + * TMU_SUPPORT_EMULATION - This features is used to set user defined + * temperature to the TMU controller. + * TMU_SUPPORT_MULTI_INST - This features denotes that the soc + * has many instances of TMU. + * TMU_SUPPORT_TRIM_RELOAD - This features shows that trimming can + * be reloaded. + * TMU_SUPPORT_FALLING_TRIP - This features shows that interrupt can + * be registered for falling trips also. + * TMU_SUPPORT_READY_STATUS - This feature tells that the TMU current + * state(active/idle) can be checked. + * TMU_SUPPORT_EMUL_TIME - This features allows to set next temp emulation + * sample time. + * TMU_SUPPORT_SHARED_MEMORY - This feature tells that the different TMU + * sensors shares some common registers. + * TMU_SUPPORT - macro to compare the above features with the supplied. + */ +#define TMU_SUPPORT_EMULATION BIT(0) +#define TMU_SUPPORT_MULTI_INST BIT(1) +#define TMU_SUPPORT_TRIM_RELOAD BIT(2) +#define TMU_SUPPORT_FALLING_TRIP BIT(3) +#define TMU_SUPPORT_READY_STATUS BIT(4) +#define TMU_SUPPORT_EMUL_TIME BIT(5) +#define TMU_SUPPORT_SHARED_MEMORY BIT(6) + +#define TMU_SUPPORTS(a, b) (a->features & TMU_SUPPORT_ ## b) + +/** + * struct exynos_tmu_register - register descriptors to access registers and + * bitfields. The register validity, offsets and bitfield values may vary + * slightly across different exynos SOC's. + * @triminfo_data: register containing 2 pont trimming data + * @triminfo_25_shift: shift bit of the 25 C trim value in triminfo_data reg. + * @triminfo_85_shift: shift bit of the 85 C trim value in triminfo_data reg. + * @triminfo_ctrl: trim info controller register. + * @triminfo_reload_shift: shift of triminfo reload enable bit in triminfo_ctrl + reg. + * @tmu_ctrl: TMU main controller register. + * @buf_vref_sel_shift: shift bits of reference voltage in tmu_ctrl register. + * @buf_vref_sel_mask: mask bits of reference voltage in tmu_ctrl register. + * @therm_trip_mode_shift: shift bits of tripping mode in tmu_ctrl register. + * @therm_trip_mode_mask: mask bits of tripping mode in tmu_ctrl register. + * @therm_trip_en_shift: shift bits of tripping enable in tmu_ctrl register. + * @buf_slope_sel_shift: shift bits of amplifier gain value in tmu_ctrl + register. + * @buf_slope_sel_mask: mask bits of amplifier gain value in tmu_ctrl register. + * @calib_mode_shift: shift bits of calibration mode value in tmu_ctrl + register. + * @calib_mode_mask: mask bits of calibration mode value in tmu_ctrl + register. + * @therm_trip_tq_en_shift: shift bits of thermal trip enable by TQ pin in + tmu_ctrl register. + * @core_en_shift: shift bits of TMU core enable bit in tmu_ctrl register. + * @tmu_status: register drescribing the TMU status. + * @tmu_cur_temp: register containing the current temperature of the TMU. + * @tmu_cur_temp_shift: shift bits of current temp value in tmu_cur_temp + register. + * @threshold_temp: register containing the base threshold level. + * @threshold_th0: Register containing first set of rising levels. + * @threshold_th0_l0_shift: shift bits of level0 threshold temperature. + * @threshold_th0_l1_shift: shift bits of level1 threshold temperature. + * @threshold_th0_l2_shift: shift bits of level2 threshold temperature. + * @threshold_th0_l3_shift: shift bits of level3 threshold temperature. + * @threshold_th1: Register containing second set of rising levels. + * @threshold_th1_l0_shift: shift bits of level0 threshold temperature. + * @threshold_th1_l1_shift: shift bits of level1 threshold temperature. + * @threshold_th1_l2_shift: shift bits of level2 threshold temperature. + * @threshold_th1_l3_shift: shift bits of level3 threshold temperature. + * @threshold_th2: Register containing third set of rising levels. + * @threshold_th2_l0_shift: shift bits of level0 threshold temperature. + * @threshold_th3: Register containing fourth set of rising levels. + * @threshold_th3_l0_shift: shift bits of level0 threshold temperature. + * @tmu_inten: register containing the different threshold interrupt + enable bits. + * @inten_rise_shift: shift bits of all rising interrupt bits. + * @inten_rise_mask: mask bits of all rising interrupt bits. + * @inten_fall_shift: shift bits of all rising interrupt bits. + * @inten_fall_mask: mask bits of all rising interrupt bits. + * @inten_rise0_shift: shift bits of rising 0 interrupt bits. + * @inten_rise1_shift: shift bits of rising 1 interrupt bits. + * @inten_rise2_shift: shift bits of rising 2 interrupt bits. + * @inten_rise3_shift: shift bits of rising 3 interrupt bits. + * @inten_fall0_shift: shift bits of falling 0 interrupt bits. + * @inten_fall1_shift: shift bits of falling 1 interrupt bits. + * @inten_fall2_shift: shift bits of falling 2 interrupt bits. + * @inten_fall3_shift: shift bits of falling 3 interrupt bits. + * @tmu_intstat: Register containing the interrupt status values. + * @tmu_intclear: Register for clearing the raised interrupt status. + * @emul_con: TMU emulation controller register. + * @emul_temp_shift: shift bits of emulation temperature. + * @emul_time_shift: shift bits of emulation time. + * @emul_time_mask: mask bits of emulation time. + * @tmu_irqstatus: register to find which TMU generated interrupts. + * @tmu_pmin: register to get/set the Pmin value. + */ +struct exynos_tmu_registers { + u32 triminfo_data; + u32 triminfo_25_shift; + u32 triminfo_85_shift; + + u32 triminfo_ctrl; + u32 triminfo_reload_shift; + + u32 tmu_ctrl; + u32 buf_vref_sel_shift; + u32 buf_vref_sel_mask; + u32 therm_trip_mode_shift; + u32 therm_trip_mode_mask; + u32 therm_trip_en_shift; + u32 buf_slope_sel_shift; + u32 buf_slope_sel_mask; + u32 calib_mode_shift; + u32 calib_mode_mask; + u32 therm_trip_tq_en_shift; + u32 core_en_shift; + + u32 tmu_status; + + u32 tmu_cur_temp; + u32 tmu_cur_temp_shift; + + u32 threshold_temp; + + u32 threshold_th0; + u32 threshold_th0_l0_shift; + u32 threshold_th0_l1_shift; + u32 threshold_th0_l2_shift; + u32 threshold_th0_l3_shift; + + u32 threshold_th1; + u32 threshold_th1_l0_shift; + u32 threshold_th1_l1_shift; + u32 threshold_th1_l2_shift; + u32 threshold_th1_l3_shift; + + u32 threshold_th2; + u32 threshold_th2_l0_shift; + + u32 threshold_th3; + u32 threshold_th3_l0_shift; + + u32 tmu_inten; + u32 inten_rise_shift; + u32 inten_rise_mask; + u32 inten_fall_shift; + u32 inten_fall_mask; + u32 inten_rise0_shift; + u32 inten_rise1_shift; + u32 inten_rise2_shift; + u32 inten_rise3_shift; + u32 inten_fall0_shift; + u32 inten_fall1_shift; + u32 inten_fall2_shift; + u32 inten_fall3_shift; + + u32 tmu_intstat; + + u32 tmu_intclear; + + u32 emul_con; + u32 emul_temp_shift; + u32 emul_time_shift; + u32 emul_time_mask; + + u32 tmu_irqstatus; + u32 tmu_pmin; +}; + +/** + * struct exynos_tmu_platform_data + * @threshold: basic temperature for generating interrupt + * 25 <= threshold <= 125 [unit: degree Celsius] + * @threshold_falling: differntial value for setting threshold + * of temperature falling interrupt. + * @trigger_levels: array for each interrupt levels + * [unit: degree Celsius] + * 0: temperature for trigger_level0 interrupt + * condition for trigger_level0 interrupt: + * current temperature > threshold + trigger_levels[0] + * 1: temperature for trigger_level1 interrupt + * condition for trigger_level1 interrupt: + * current temperature > threshold + trigger_levels[1] + * 2: temperature for trigger_level2 interrupt + * condition for trigger_level2 interrupt: + * current temperature > threshold + trigger_levels[2] + * 3: temperature for trigger_level3 interrupt + * condition for trigger_level3 interrupt: + * current temperature > threshold + trigger_levels[3] + * @trigger_type: defines the type of trigger. Possible values are, + * THROTTLE_ACTIVE trigger type + * THROTTLE_PASSIVE trigger type + * SW_TRIP trigger type + * HW_TRIP + * @trigger_enable[]: array to denote which trigger levels are enabled. + * 1 = enable trigger_level[] interrupt, + * 0 = disable trigger_level[] interrupt + * @max_trigger_level: max trigger level supported by the TMU + * @gain: gain of amplifier in the positive-TC generator block + * 0 <= gain <= 15 + * @reference_voltage: reference voltage of amplifier + * in the positive-TC generator block + * 0 <= reference_voltage <= 31 + * @noise_cancel_mode: noise cancellation mode + * 000, 100, 101, 110 and 111 can be different modes + * @type: determines the type of SOC + * @efuse_value: platform defined fuse value + * @min_efuse_value: minimum valid trimming data + * @max_efuse_value: maximum valid trimming data + * @first_point_trim: temp value of the first point trimming + * @second_point_trim: temp value of the second point trimming + * @default_temp_offset: default temperature offset in case of no trimming + * @cal_type: calibration type for temperature + * @cal_mode: calibration mode for temperature + * @freq_clip_table: Table representing frequency reduction percentage. + * @freq_tab_count: Count of the above table as frequency reduction may + * applicable to only some of the trigger levels. + * @registers: Pointer to structure containing all the TMU controller registers + * and bitfields shifts and masks. + * @features: a bitfield value indicating the features supported in SOC like + * emulation, multi instance etc + * + * This structure is required for configuration of exynos_tmu driver. + */ +struct exynos_tmu_platform_data { + u8 threshold; + u8 threshold_falling; + u8 trigger_levels[MAX_TRIP_COUNT]; + enum trigger_type trigger_type[MAX_TRIP_COUNT]; + bool trigger_enable[MAX_TRIP_COUNT]; + u8 max_trigger_level; + u8 gain; + u8 reference_voltage; + u8 noise_cancel_mode; + + u32 efuse_value; + u32 min_efuse_value; + u32 max_efuse_value; + u8 first_point_trim; + u8 second_point_trim; + u8 default_temp_offset; + + enum calibration_type cal_type; + enum calibration_mode cal_mode; + enum soc_type type; + struct freq_clip_table freq_tab[4]; + unsigned int freq_tab_count; + const struct exynos_tmu_registers *registers; + unsigned int features; +}; + +/** + * struct exynos_tmu_init_data + * @tmu_count: number of TMU instances. + * @tmu_data: platform data of all TMU instances. + * This structure is required to store data for multi-instance exynos tmu + * driver. + */ +struct exynos_tmu_init_data { + int tmu_count; + struct exynos_tmu_platform_data tmu_data[]; +}; + +#endif /* _EXYNOS_TMU_H */ |