/* * exynos_tmu.h - Samsung EXYNOS TMU (Thermal Management Unit) * * Copyright (C) 2011 Samsung Electronics * Donggeun Kim * Amit Daniel Kachhap * * 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 #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 soc_type { SOC_ARCH_EXYNOS3250 = 1, SOC_ARCH_EXYNOS4210, SOC_ARCH_EXYNOS4412, SOC_ARCH_EXYNOS5250, SOC_ARCH_EXYNOS5260, SOC_ARCH_EXYNOS5420_TRIMINFO, 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_ADDRESS_MULTIPLE - 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_ADDRESS_MULTIPLE 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_ctrl: trim info controller register. * @triminfo_ctrl_count: the number of trim info controller register. * @tmu_ctrl: TMU main controller register. * @test_mux_addr_shift: shift bits of test mux address. * @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. * @tmu_cur_temp: register containing the current temperature of the TMU. * @threshold_th0: Register containing first set of rising levels. * @threshold_th1: Register containing second set of rising levels. * @threshold_th2: Register containing third 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_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. * @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. * @tmu_irqstatus: register to find which TMU generated interrupts. * @tmu_pmin: register to get/set the Pmin value. */ struct exynos_tmu_registers { u32 triminfo_ctrl[MAX_TRIMINFO_CTRL_REG]; u32 triminfo_ctrl_count; u32 tmu_ctrl; u32 test_mux_addr_shift; u32 therm_trip_mode_shift; u32 therm_trip_mode_mask; u32 therm_trip_en_shift; u32 tmu_cur_temp; u32 threshold_th0; u32 threshold_th1; u32 threshold_th2; u32 threshold_th3_l0_shift; u32 tmu_inten; u32 inten_rise0_shift; u32 inten_rise1_shift; u32 inten_rise2_shift; u32 inten_rise3_shift; u32 inten_fall0_shift; u32 tmu_intstat; u32 tmu_intclear; u32 emul_con; u32 emul_temp_shift; u32 emul_time_shift; 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 * @non_hw_trigger_levels: number of defined non-hardware trigger levels * @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 * @test_mux; information if SoC supports test MUX * @triminfo_reload: reload value to read TRIMINFO register * @cal_type: calibration type 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 non_hw_trigger_levels; 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; u8 test_mux; u8 triminfo_reload[MAX_TRIMINFO_CTRL_REG]; enum calibration_type cal_type; 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 */