| /* |
| * 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 |
