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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
158 lines
5 KiB
C
158 lines
5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* OMAP3 thermal driver.
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*
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* Copyright (C) 2011-2012 Texas Instruments Inc.
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* Copyright (C) 2014 Pavel Machek <pavel@ucw.cz>
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*
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* Note
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* http://www.ti.com/lit/er/sprz278f/sprz278f.pdf "Advisory
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* 3.1.1.186 MMC OCP Clock Not Gated When Thermal Sensor Is Used"
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*
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* Also TI says:
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* Just be careful when you try to make thermal policy like decisions
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* based on this sensor. Placement of the sensor w.r.t the actual logic
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* generating heat has to be a factor as well. If you are just looking
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* for an approximation temperature (thermometerish kind), you might be
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* ok with this. I am not sure we'd find any TI data around this.. just a
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* heads up.
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*/
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#include "ti-thermal.h"
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#include "ti-bandgap.h"
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/*
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* OMAP34XX has one instance of thermal sensor for MPU
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* need to describe the individual bit fields
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*/
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static struct temp_sensor_registers
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omap34xx_mpu_temp_sensor_registers = {
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.temp_sensor_ctrl = 0,
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.bgap_soc_mask = BIT(8),
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.bgap_eocz_mask = BIT(7),
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.bgap_dtemp_mask = 0x7f,
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.bgap_mode_ctrl = 0,
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.mode_ctrl_mask = BIT(9),
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};
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/* Thresholds and limits for OMAP34XX MPU temperature sensor */
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static struct temp_sensor_data omap34xx_mpu_temp_sensor_data = {
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.min_freq = 32768,
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.max_freq = 32768,
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};
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/*
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* Temperature values in milli degree celsius
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*/
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static const int
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omap34xx_adc_to_temp[128] = {
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-40000, -40000, -40000, -40000, -40000, -39000, -38000, -36000,
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-34000, -32000, -31000, -29000, -28000, -26000, -25000, -24000,
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-22000, -21000, -19000, -18000, -17000, -15000, -14000, -12000,
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-11000, -9000, -8000, -7000, -5000, -4000, -2000, -1000, 0000,
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1000, 3000, 4000, 5000, 7000, 8000, 10000, 11000, 13000, 14000,
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15000, 17000, 18000, 20000, 21000, 22000, 24000, 25000, 27000,
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28000, 30000, 31000, 32000, 34000, 35000, 37000, 38000, 39000,
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41000, 42000, 44000, 45000, 47000, 48000, 49000, 51000, 52000,
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53000, 55000, 56000, 58000, 59000, 60000, 62000, 63000, 65000,
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66000, 67000, 69000, 70000, 72000, 73000, 74000, 76000, 77000,
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79000, 80000, 81000, 83000, 84000, 85000, 87000, 88000, 89000,
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91000, 92000, 94000, 95000, 96000, 98000, 99000, 100000,
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102000, 103000, 105000, 106000, 107000, 109000, 110000, 111000,
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113000, 114000, 116000, 117000, 118000, 120000, 121000, 122000,
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124000, 124000, 125000, 125000, 125000, 125000, 125000
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};
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/* OMAP34XX data */
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const struct ti_bandgap_data omap34xx_data = {
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.features = TI_BANDGAP_FEATURE_CLK_CTRL | TI_BANDGAP_FEATURE_UNRELIABLE,
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.fclock_name = "ts_fck",
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.div_ck_name = "ts_fck",
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.conv_table = omap34xx_adc_to_temp,
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.adc_start_val = 0,
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.adc_end_val = 127,
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.expose_sensor = ti_thermal_expose_sensor,
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.remove_sensor = ti_thermal_remove_sensor,
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.sensors = {
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{
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.registers = &omap34xx_mpu_temp_sensor_registers,
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.ts_data = &omap34xx_mpu_temp_sensor_data,
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.domain = "cpu",
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.slope_pcb = 0,
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.constant_pcb = 20000,
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.register_cooling = NULL,
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.unregister_cooling = NULL,
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},
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},
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.sensor_count = 1,
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};
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/*
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* OMAP36XX has one instance of thermal sensor for MPU
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* need to describe the individual bit fields
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*/
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static struct temp_sensor_registers
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omap36xx_mpu_temp_sensor_registers = {
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.temp_sensor_ctrl = 0,
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.bgap_soc_mask = BIT(9),
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.bgap_eocz_mask = BIT(8),
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.bgap_dtemp_mask = 0xFF,
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.bgap_mode_ctrl = 0,
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.mode_ctrl_mask = BIT(10),
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};
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/* Thresholds and limits for OMAP36XX MPU temperature sensor */
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static struct temp_sensor_data omap36xx_mpu_temp_sensor_data = {
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.min_freq = 32768,
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.max_freq = 32768,
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};
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/*
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* Temperature values in milli degree celsius
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*/
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static const int
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omap36xx_adc_to_temp[128] = {
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-40000, -40000, -40000, -40000, -40000, -40000, -40000, -40000,
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-40000, -40000, -40000, -40000, -40000, -38000, -35000, -34000,
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-32000, -30000, -28000, -26000, -24000, -22000, -20000, -18500,
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-17000, -15000, -13500, -12000, -10000, -8000, -6500, -5000, -3500,
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-1500, 0, 2000, 3500, 5000, 6500, 8500, 10000, 12000, 13500,
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15000, 17000, 19000, 21000, 23000, 25000, 27000, 28500, 30000,
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32000, 33500, 35000, 37000, 38500, 40000, 42000, 43500, 45000,
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47000, 48500, 50000, 52000, 53500, 55000, 57000, 58500, 60000,
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62000, 64000, 66000, 68000, 70000, 71500, 73500, 75000, 77000,
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78500, 80000, 82000, 83500, 85000, 87000, 88500, 90000, 92000,
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93500, 95000, 97000, 98500, 100000, 102000, 103500, 105000, 107000,
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109000, 111000, 113000, 115000, 117000, 118500, 120000, 122000,
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123500, 125000, 125000, 125000, 125000, 125000, 125000, 125000,
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125000, 125000, 125000, 125000, 125000, 125000, 125000, 125000,
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125000, 125000, 125000, 125000, 125000, 125000, 125000
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};
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/* OMAP36XX data */
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const struct ti_bandgap_data omap36xx_data = {
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.features = TI_BANDGAP_FEATURE_CLK_CTRL | TI_BANDGAP_FEATURE_UNRELIABLE,
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.fclock_name = "ts_fck",
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.div_ck_name = "ts_fck",
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.conv_table = omap36xx_adc_to_temp,
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.adc_start_val = 0,
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.adc_end_val = 127,
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.expose_sensor = ti_thermal_expose_sensor,
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.remove_sensor = ti_thermal_remove_sensor,
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.sensors = {
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{
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.registers = &omap36xx_mpu_temp_sensor_registers,
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.ts_data = &omap36xx_mpu_temp_sensor_data,
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.domain = "cpu",
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.slope_pcb = 0,
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.constant_pcb = 20000,
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.register_cooling = NULL,
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.unregister_cooling = NULL,
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},
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},
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.sensor_count = 1,
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};
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