diff options
Diffstat (limited to 'drivers/staging/omap-thermal/omap-bandgap.h')
| -rw-r--r-- | drivers/staging/omap-thermal/omap-bandgap.h | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/drivers/staging/omap-thermal/omap-bandgap.h b/drivers/staging/omap-thermal/omap-bandgap.h new file mode 100644 index 0000000..78aed75 --- /dev/null +++ b/drivers/staging/omap-thermal/omap-bandgap.h @@ -0,0 +1,441 @@ +/* + * OMAP4 Bandgap temperature sensor driver + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ + * Contact: + * Eduardo Valentin <eduardo.valentin@ti.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ +#ifndef __OMAP_BANDGAP_H +#define __OMAP_BANDGAP_H + +#include <linux/mutex.h> +#include <linux/types.h> +#include <linux/err.h> + +/* TEMP_SENSOR OMAP4430 */ +#define OMAP4430_BGAP_TSHUT_SHIFT 11 +#define OMAP4430_BGAP_TSHUT_MASK (1 << 11) + +/* TEMP_SENSOR OMAP4430 */ +#define OMAP4430_BGAP_TEMPSOFF_SHIFT 12 +#define OMAP4430_BGAP_TEMPSOFF_MASK (1 << 12) +#define OMAP4430_SINGLE_MODE_SHIFT 10 +#define OMAP4430_SINGLE_MODE_MASK (1 << 10) +#define OMAP4430_BGAP_TEMP_SENSOR_SOC_SHIFT 9 +#define OMAP4430_BGAP_TEMP_SENSOR_SOC_MASK (1 << 9) +#define OMAP4430_BGAP_TEMP_SENSOR_EOCZ_SHIFT 8 +#define OMAP4430_BGAP_TEMP_SENSOR_EOCZ_MASK (1 << 8) +#define OMAP4430_BGAP_TEMP_SENSOR_DTEMP_SHIFT 0 +#define OMAP4430_BGAP_TEMP_SENSOR_DTEMP_MASK (0xff << 0) + +#define OMAP4430_ADC_START_VALUE 0 +#define OMAP4430_ADC_END_VALUE 127 +#define OMAP4430_MAX_FREQ 32768 +#define OMAP4430_MIN_FREQ 32768 +#define OMAP4430_MIN_TEMP -40000 +#define OMAP4430_MAX_TEMP 125000 +#define OMAP4430_HYST_VAL 5000 + +/* TEMP_SENSOR OMAP4460 */ +#define OMAP4460_BGAP_TEMPSOFF_SHIFT 13 +#define OMAP4460_BGAP_TEMPSOFF_MASK (1 << 13) +#define OMAP4460_BGAP_TEMP_SENSOR_SOC_SHIFT 11 +#define OMAP4460_BGAP_TEMP_SENSOR_SOC_MASK (1 << 11) +#define OMAP4460_BGAP_TEMP_SENSOR_EOCZ_SHIFT 10 +#define OMAP4460_BGAP_TEMP_SENSOR_EOCZ_MASK (1 << 10) +#define OMAP4460_BGAP_TEMP_SENSOR_DTEMP_SHIFT 0 +#define OMAP4460_BGAP_TEMP_SENSOR_DTEMP_MASK (0x3ff << 0) + +/* BANDGAP_CTRL */ +#define OMAP4460_SINGLE_MODE_SHIFT 31 +#define OMAP4460_SINGLE_MODE_MASK (1 << 31) +#define OMAP4460_MASK_HOT_SHIFT 1 +#define OMAP4460_MASK_HOT_MASK (1 << 1) +#define OMAP4460_MASK_COLD_SHIFT 0 +#define OMAP4460_MASK_COLD_MASK (1 << 0) + +/* BANDGAP_COUNTER */ +#define OMAP4460_COUNTER_SHIFT 0 +#define OMAP4460_COUNTER_MASK (0xffffff << 0) + +/* BANDGAP_THRESHOLD */ +#define OMAP4460_T_HOT_SHIFT 16 +#define OMAP4460_T_HOT_MASK (0x3ff << 16) +#define OMAP4460_T_COLD_SHIFT 0 +#define OMAP4460_T_COLD_MASK (0x3ff << 0) + +/* TSHUT_THRESHOLD */ +#define OMAP4460_TSHUT_HOT_SHIFT 16 +#define OMAP4460_TSHUT_HOT_MASK (0x3ff << 16) +#define OMAP4460_TSHUT_COLD_SHIFT 0 +#define OMAP4460_TSHUT_COLD_MASK (0x3ff << 0) + +/* BANDGAP_STATUS */ +#define OMAP4460_CLEAN_STOP_SHIFT 3 +#define OMAP4460_CLEAN_STOP_MASK (1 << 3) +#define OMAP4460_BGAP_ALERT_SHIFT 2 +#define OMAP4460_BGAP_ALERT_MASK (1 << 2) +#define OMAP4460_HOT_FLAG_SHIFT 1 +#define OMAP4460_HOT_FLAG_MASK (1 << 1) +#define OMAP4460_COLD_FLAG_SHIFT 0 +#define OMAP4460_COLD_FLAG_MASK (1 << 0) + +/* TEMP_SENSOR OMAP5430 */ +#define OMAP5430_BGAP_TEMP_SENSOR_SOC_SHIFT 12 +#define OMAP5430_BGAP_TEMP_SENSOR_SOC_MASK (1 << 12) +#define OMAP5430_BGAP_TEMPSOFF_SHIFT 11 +#define OMAP5430_BGAP_TEMPSOFF_MASK (1 << 11) +#define OMAP5430_BGAP_TEMP_SENSOR_EOCZ_SHIFT 10 +#define OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK (1 << 10) +#define OMAP5430_BGAP_TEMP_SENSOR_DTEMP_SHIFT 0 +#define OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK (0x3ff << 0) + +/* BANDGAP_CTRL */ +#define OMAP5430_MASK_HOT_CORE_SHIFT 5 +#define OMAP5430_MASK_HOT_CORE_MASK (1 << 5) +#define OMAP5430_MASK_COLD_CORE_SHIFT 4 +#define OMAP5430_MASK_COLD_CORE_MASK (1 << 4) +#define OMAP5430_MASK_HOT_MM_SHIFT 3 +#define OMAP5430_MASK_HOT_MM_MASK (1 << 3) +#define OMAP5430_MASK_COLD_MM_SHIFT 2 +#define OMAP5430_MASK_COLD_MM_MASK (1 << 2) +#define OMAP5430_MASK_HOT_MPU_SHIFT 1 +#define OMAP5430_MASK_HOT_MPU_MASK (1 << 1) +#define OMAP5430_MASK_COLD_MPU_SHIFT 0 +#define OMAP5430_MASK_COLD_MPU_MASK (1 << 0) + +/* BANDGAP_COUNTER */ +#define OMAP5430_REPEAT_MODE_SHIFT 31 +#define OMAP5430_REPEAT_MODE_MASK (1 << 31) +#define OMAP5430_COUNTER_SHIFT 0 +#define OMAP5430_COUNTER_MASK (0xffffff << 0) + +/* BANDGAP_THRESHOLD */ +#define OMAP5430_T_HOT_SHIFT 16 +#define OMAP5430_T_HOT_MASK (0x3ff << 16) +#define OMAP5430_T_COLD_SHIFT 0 +#define OMAP5430_T_COLD_MASK (0x3ff << 0) + +/* TSHUT_THRESHOLD */ +#define OMAP5430_TSHUT_HOT_SHIFT 16 +#define OMAP5430_TSHUT_HOT_MASK (0x3ff << 16) +#define OMAP5430_TSHUT_COLD_SHIFT 0 +#define OMAP5430_TSHUT_COLD_MASK (0x3ff << 0) + +/* BANDGAP_STATUS */ +#define OMAP5430_BGAP_ALERT_SHIFT 31 +#define OMAP5430_BGAP_ALERT_MASK (1 << 31) +#define OMAP5430_HOT_CORE_FLAG_SHIFT 5 +#define OMAP5430_HOT_CORE_FLAG_MASK (1 << 5) +#define OMAP5430_COLD_CORE_FLAG_SHIFT 4 +#define OMAP5430_COLD_CORE_FLAG_MASK (1 << 4) +#define OMAP5430_HOT_MM_FLAG_SHIFT 3 +#define OMAP5430_HOT_MM_FLAG_MASK (1 << 3) +#define OMAP5430_COLD_MM_FLAG_SHIFT 2 +#define OMAP5430_COLD_MM_FLAG_MASK (1 << 2) +#define OMAP5430_HOT_MPU_FLAG_SHIFT 1 +#define OMAP5430_HOT_MPU_FLAG_MASK (1 << 1) +#define OMAP5430_COLD_MPU_FLAG_SHIFT 0 +#define OMAP5430_COLD_MPU_FLAG_MASK (1 << 0) + +/* Offsets from the base of temperature sensor registers */ + +/* 4430 - All goes relative to OPP_BGAP */ +#define OMAP4430_FUSE_OPP_BGAP 0x0 +#define OMAP4430_TEMP_SENSOR_CTRL_OFFSET 0xCC + +/* 4460 - All goes relative to OPP_BGAP */ +#define OMAP4460_FUSE_OPP_BGAP 0x0 +#define OMAP4460_TEMP_SENSOR_CTRL_OFFSET 0xCC +#define OMAP4460_BGAP_CTRL_OFFSET 0x118 +#define OMAP4460_BGAP_COUNTER_OFFSET 0x11C +#define OMAP4460_BGAP_THRESHOLD_OFFSET 0x120 +#define OMAP4460_BGAP_TSHUT_OFFSET 0x124 +#define OMAP4460_BGAP_STATUS_OFFSET 0x128 + +/* 5430 - All goes relative to OPP_BGAP_GPU */ +#define OMAP5430_FUSE_OPP_BGAP_GPU 0x0 +#define OMAP5430_TEMP_SENSOR_GPU_OFFSET 0x150 +#define OMAP5430_BGAP_COUNTER_GPU_OFFSET 0x1C0 +#define OMAP5430_BGAP_THRESHOLD_GPU_OFFSET 0x1A8 +#define OMAP5430_BGAP_TSHUT_GPU_OFFSET 0x1B4 + +#define OMAP5430_FUSE_OPP_BGAP_MPU 0x4 +#define OMAP5430_TEMP_SENSOR_MPU_OFFSET 0x14C +#define OMAP5430_BGAP_CTRL_OFFSET 0x1A0 +#define OMAP5430_BGAP_COUNTER_MPU_OFFSET 0x1BC +#define OMAP5430_BGAP_THRESHOLD_MPU_OFFSET 0x1A4 +#define OMAP5430_BGAP_TSHUT_MPU_OFFSET 0x1B0 +#define OMAP5430_BGAP_STATUS_OFFSET 0x1C8 + +#define OMAP5430_FUSE_OPP_BGAP_CORE 0x8 +#define OMAP5430_TEMP_SENSOR_CORE_OFFSET 0x154 +#define OMAP5430_BGAP_COUNTER_CORE_OFFSET 0x1C4 +#define OMAP5430_BGAP_THRESHOLD_CORE_OFFSET 0x1AC +#define OMAP5430_BGAP_TSHUT_CORE_OFFSET 0x1B8 + +#define OMAP4460_TSHUT_HOT 900 /* 122 deg C */ +#define OMAP4460_TSHUT_COLD 895 /* 100 deg C */ +#define OMAP4460_T_HOT 800 /* 73 deg C */ +#define OMAP4460_T_COLD 795 /* 71 deg C */ +#define OMAP4460_MAX_FREQ 1500000 +#define OMAP4460_MIN_FREQ 1000000 +#define OMAP4460_MIN_TEMP -40000 +#define OMAP4460_MAX_TEMP 123000 +#define OMAP4460_HYST_VAL 5000 +#define OMAP4460_ADC_START_VALUE 530 +#define OMAP4460_ADC_END_VALUE 932 + +#define OMAP5430_MPU_TSHUT_HOT 915 +#define OMAP5430_MPU_TSHUT_COLD 900 +#define OMAP5430_MPU_T_HOT 800 +#define OMAP5430_MPU_T_COLD 795 +#define OMAP5430_MPU_MAX_FREQ 1500000 +#define OMAP5430_MPU_MIN_FREQ 1000000 +#define OMAP5430_MPU_MIN_TEMP -40000 +#define OMAP5430_MPU_MAX_TEMP 125000 +#define OMAP5430_MPU_HYST_VAL 5000 +#define OMAP5430_ADC_START_VALUE 532 +#define OMAP5430_ADC_END_VALUE 934 + + +#define OMAP5430_GPU_TSHUT_HOT 915 +#define OMAP5430_GPU_TSHUT_COLD 900 +#define OMAP5430_GPU_T_HOT 800 +#define OMAP5430_GPU_T_COLD 795 +#define OMAP5430_GPU_MAX_FREQ 1500000 +#define OMAP5430_GPU_MIN_FREQ 1000000 +#define OMAP5430_GPU_MIN_TEMP -40000 +#define OMAP5430_GPU_MAX_TEMP 125000 +#define OMAP5430_GPU_HYST_VAL 5000 + +#define OMAP5430_CORE_TSHUT_HOT 915 +#define OMAP5430_CORE_TSHUT_COLD 900 +#define OMAP5430_CORE_T_HOT 800 +#define OMAP5430_CORE_T_COLD 795 +#define OMAP5430_CORE_MAX_FREQ 1500000 +#define OMAP5430_CORE_MIN_FREQ 1000000 +#define OMAP5430_CORE_MIN_TEMP -40000 +#define OMAP5430_CORE_MAX_TEMP 125000 +#define OMAP5430_CORE_HYST_VAL 5000 + +/** + * The register offsets and bit fields might change across + * OMAP versions hence populating them in this structure. + */ + +struct temp_sensor_registers { + u32 temp_sensor_ctrl; + u32 bgap_tempsoff_mask; + u32 bgap_soc_mask; + u32 bgap_eocz_mask; + u32 bgap_dtemp_mask; + + u32 bgap_mask_ctrl; + u32 mask_hot_mask; + u32 mask_cold_mask; + + u32 bgap_mode_ctrl; + u32 mode_ctrl_mask; + + u32 bgap_counter; + u32 counter_mask; + + u32 bgap_threshold; + u32 threshold_thot_mask; + u32 threshold_tcold_mask; + + u32 tshut_threshold; + u32 tshut_hot_mask; + u32 tshut_cold_mask; + + u32 bgap_status; + u32 status_clean_stop_mask; + u32 status_bgap_alert_mask; + u32 status_hot_mask; + u32 status_cold_mask; + + u32 bgap_efuse; +}; + +/** + * The thresholds and limits for temperature sensors. + */ +struct temp_sensor_data { + u32 tshut_hot; + u32 tshut_cold; + u32 t_hot; + u32 t_cold; + u32 min_freq; + u32 max_freq; + int max_temp; + int min_temp; + int hyst_val; + u32 adc_start_val; + u32 adc_end_val; + u32 update_int1; + u32 update_int2; +}; + +struct omap_bandgap_data; + +/** + * struct omap_bandgap - bandgap device structure + * @dev: device pointer + * @conf: platform data with sensor data + * @fclock: pointer to functional clock of temperature sensor + * @div_clk: pointer to parent clock of temperature sensor fclk + * @conv_table: Pointer to adc to temperature conversion table + * @bg_mutex: Mutex for sysfs, irq and PM + * @irq: MPU Irq number for thermal alert + * @tshut_gpio: GPIO where Tshut signal is routed + * @clk_rate: Holds current clock rate + */ +struct omap_bandgap { + struct device *dev; + void __iomem *base; + struct omap_bandgap_data *conf; + struct clk *fclock; + struct clk *div_clk; + const int *conv_table; + struct mutex bg_mutex; /* Mutex for irq and PM */ + int irq; + int tshut_gpio; + u32 clk_rate; +}; + +/** + * struct temp_sensor_regval - temperature sensor register values + * @bg_mode_ctrl: temp sensor control register value + * @bg_ctrl: bandgap ctrl register value + * @bg_counter: bandgap counter value + * @bg_threshold: bandgap threshold register value + * @tshut_threshold: bandgap tshut register value + */ +struct temp_sensor_regval { + u32 bg_mode_ctrl; + u32 bg_ctrl; + u32 bg_counter; + u32 bg_threshold; + u32 tshut_threshold; +}; + +/** + * struct thermal_cooling_conf - description on how to cool a thermal zone + * @freq_clip_count: size of freq_data + */ +struct thermal_cooling_conf { + int freq_clip_count; +}; + +/** + * struct omap_temp_sensor - bandgap temperature sensor platform data + * @ts_data: pointer to struct with thresholds, limits of temperature sensor + * @registers: pointer to the list of register offsets and bitfields + * @regval: temperature sensor register values + * @domain: the name of the domain where the sensor is located + * @cooling_data: description on how the zone should be cooled off. + * @slope: sensor gradient slope info for hotspot extrapolation + * @const: sensor gradient const info for hotspot extrapolation + * @slope_pcb: sensor gradient slope info for hotspot extrapolation + * with no external influence + * @const_pcb: sensor gradient const info for hotspot extrapolation + * with no external influence + * @data: private data + * @register_cooling: function to describe how this sensor is going to be cooled + * @unregister_cooling: function to release cooling data + */ +struct omap_temp_sensor { + struct temp_sensor_data *ts_data; + struct temp_sensor_registers *registers; + struct temp_sensor_regval regval; + char *domain; + struct thermal_cooling_conf cooling_data; + /* for hotspot extrapolation */ + const int slope; + const int constant; + const int slope_pcb; + const int constant_pcb; + void *data; + int (*register_cooling)(struct omap_bandgap *bg_ptr, int id); + int (*unregister_cooling)(struct omap_bandgap *bg_ptr, int id); +}; + +/** + * struct omap_bandgap_data - bandgap platform data structure + * @features: a bitwise flag set to describe the device features + * @conv_table: Pointer to adc to temperature conversion table + * @fclock_name: clock name of the functional clock + * @div_ck_nme: clock name of the clock divisor + * @sensor_count: count of temperature sensor device in scm + * @sensors: array of sensors present in this bandgap instance + * @expose_sensor: callback to export sensor to thermal API + */ +struct omap_bandgap_data { +#define OMAP_BANDGAP_FEATURE_TSHUT (1 << 0) +#define OMAP_BANDGAP_FEATURE_TSHUT_CONFIG (1 << 1) +#define OMAP_BANDGAP_FEATURE_TALERT (1 << 2) +#define OMAP_BANDGAP_FEATURE_MODE_CONFIG (1 << 3) +#define OMAP_BANDGAP_FEATURE_COUNTER (1 << 4) +#define OMAP_BANDGAP_FEATURE_POWER_SWITCH (1 << 5) +#define OMAP_BANDGAP_HAS(b, f) \ + ((b)->conf->features & OMAP_BANDGAP_FEATURE_ ## f) + unsigned int features; + const int *conv_table; + char *fclock_name; + char *div_ck_name; + int sensor_count; + int (*report_temperature)(struct omap_bandgap *bg_ptr, int id); + int (*expose_sensor)(struct omap_bandgap *bg_ptr, int id, char *domain); + int (*remove_sensor)(struct omap_bandgap *bg_ptr, int id); + + /* this needs to be at the end */ + struct omap_temp_sensor sensors[]; +}; + +int omap_bandgap_read_thot(struct omap_bandgap *bg_ptr, int id, int *thot); +int omap_bandgap_write_thot(struct omap_bandgap *bg_ptr, int id, int val); +int omap_bandgap_read_tcold(struct omap_bandgap *bg_ptr, int id, int *tcold); +int omap_bandgap_write_tcold(struct omap_bandgap *bg_ptr, int id, int val); +int omap_bandgap_read_update_interval(struct omap_bandgap *bg_ptr, int id, + int *interval); +int omap_bandgap_write_update_interval(struct omap_bandgap *bg_ptr, int id, + u32 interval); +int omap_bandgap_read_temperature(struct omap_bandgap *bg_ptr, int id, + int *temperature); +int omap_bandgap_set_sensor_data(struct omap_bandgap *bg_ptr, int id, + void *data); +void *omap_bandgap_get_sensor_data(struct omap_bandgap *bg_ptr, int id); + +#ifdef CONFIG_OMAP4_THERMAL +extern const struct omap_bandgap_data omap4430_data; +extern const struct omap_bandgap_data omap4460_data; +extern const struct omap_bandgap_data omap4470_data; +#else +#define omap4430_data NULL +#define omap4460_data NULL +#define omap4470_data NULL +#endif + +#ifdef CONFIG_OMAP5_THERMAL +extern const struct omap_bandgap_data omap5430_data; +#else +#define omap5430_data NULL +#endif + +#endif |