diff options
Diffstat (limited to 'drivers/thermal/ti-soc-thermal/ti-bandgap.h')
| -rw-r--r-- | drivers/thermal/ti-soc-thermal/ti-bandgap.h | 88 |
1 files changed, 29 insertions, 59 deletions
diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.h b/drivers/thermal/ti-soc-thermal/ti-bandgap.h index b3adf72f252d..46263c1da8b6 100644 --- a/drivers/thermal/ti-soc-thermal/ti-bandgap.h +++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.h @@ -1,24 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * 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 __TI_BANDGAP_H #define __TI_BANDGAP_H @@ -26,6 +12,12 @@ #include <linux/spinlock.h> #include <linux/types.h> #include <linux/err.h> +#include <linux/cpu_pm.h> +#include <linux/device.h> +#include <linux/pm_runtime.h> +#include <linux/pm.h> + +struct gpio_desc; /** * DOC: bandgap driver data structure @@ -78,11 +70,8 @@ * @bgap_mask_ctrl: BANDGAP_MASK_CTRL register offset * @mask_hot_mask: mask to bandgap_mask_ctrl.mask_hot * @mask_cold_mask: mask to bandgap_mask_ctrl.mask_cold - * @mask_sidlemode_mask: mask to bandgap_mask_ctrl.mask_sidlemode * @mask_counter_delay_mask: mask to bandgap_mask_ctrl.mask_counter_delay * @mask_freeze_mask: mask to bandgap_mask_ctrl.mask_free - * @mask_clear_mask: mask to bandgap_mask_ctrl.mask_clear - * @mask_clear_accum_mask: mask to bandgap_mask_ctrl.mask_clear_accum * @bgap_mode_ctrl: BANDGAP_MODE_CTRL register offset * @mode_ctrl_mask: mask to bandgap_mode_ctrl.mode_ctrl * @bgap_counter: BANDGAP_COUNTER register offset @@ -91,21 +80,13 @@ * @threshold_thot_mask: mask to bandgap_threhold.thot * @threshold_tcold_mask: mask to bandgap_threhold.tcold * @tshut_threshold: TSHUT_THRESHOLD register offset (TSHUT thresholds) - * @tshut_efuse_mask: mask to tshut_threshold.tshut_efuse - * @tshut_efuse_shift: shift to tshut_threshold.tshut_efuse * @tshut_hot_mask: mask to tshut_threhold.thot * @tshut_cold_mask: mask to tshut_threhold.thot * @bgap_status: BANDGAP_STATUS register offset - * @status_clean_stop_mask: mask to bandgap_status.clean_stop - * @status_bgap_alert_mask: mask to bandgap_status.bandgap_alert * @status_hot_mask: mask to bandgap_status.hot * @status_cold_mask: mask to bandgap_status.cold - * @bgap_cumul_dtemp: BANDGAP_CUMUL_DTEMP register offset - * @ctrl_dtemp_0: CTRL_DTEMP0 register offset * @ctrl_dtemp_1: CTRL_DTEMP1 register offset * @ctrl_dtemp_2: CTRL_DTEMP2 register offset - * @ctrl_dtemp_3: CTRL_DTEMP3 register offset - * @ctrl_dtemp_4: CTRL_DTEMP4 register offset * @bgap_efuse: BANDGAP_EFUSE register offset * * The register offsets and bitfields might change across @@ -121,17 +102,14 @@ struct temp_sensor_registers { u32 temp_sensor_ctrl; u32 bgap_tempsoff_mask; u32 bgap_soc_mask; - u32 bgap_eocz_mask; /* not used: but needs revisit */ + u32 bgap_eocz_mask; u32 bgap_dtemp_mask; u32 bgap_mask_ctrl; u32 mask_hot_mask; u32 mask_cold_mask; - u32 mask_sidlemode_mask; /* not used: but may be needed for pm */ u32 mask_counter_delay_mask; u32 mask_freeze_mask; - u32 mask_clear_mask; /* not used: but needed for trending */ - u32 mask_clear_accum_mask; /* not used: but needed for trending */ u32 bgap_mode_ctrl; u32 mode_ctrl_mask; @@ -144,23 +122,15 @@ struct temp_sensor_registers { u32 threshold_tcold_mask; u32 tshut_threshold; - u32 tshut_efuse_mask; /* not used */ - u32 tshut_efuse_shift; /* not used */ u32 tshut_hot_mask; u32 tshut_cold_mask; u32 bgap_status; - u32 status_clean_stop_mask; /* not used: but needed for trending */ - u32 status_bgap_alert_mask; /* not used */ u32 status_hot_mask; u32 status_cold_mask; - u32 bgap_cumul_dtemp; /* not used: but needed for trending */ - u32 ctrl_dtemp_0; /* not used: but needed for trending */ - u32 ctrl_dtemp_1; /* not used: but needed for trending */ - u32 ctrl_dtemp_2; /* not used: but needed for trending */ - u32 ctrl_dtemp_3; /* not used: but needed for trending */ - u32 ctrl_dtemp_4; /* not used: but needed for trending */ + u32 ctrl_dtemp_1; + u32 ctrl_dtemp_2; u32 bgap_efuse; }; @@ -172,11 +142,6 @@ struct temp_sensor_registers { * @t_cold: temperature to trigger a thermal alert (low initial value) * @min_freq: sensor minimum clock rate * @max_freq: sensor maximum clock rate - * @max_temp: sensor maximum temperature - * @min_temp: sensor minimum temperature - * @hyst_val: temperature hysteresis considered while converting ADC values - * @update_int1: update interval - * @update_int2: update interval * * This data structure will hold the required thresholds and temperature limits * for a specific temperature sensor, like shutdown temperature, alert @@ -189,11 +154,6 @@ struct temp_sensor_data { u32 t_cold; u32 min_freq; u32 max_freq; - int max_temp; - int min_temp; - int hyst_val; - u32 update_int1; /* not used */ - u32 update_int2; /* not used */ }; struct ti_bandgap_data; @@ -245,8 +205,10 @@ struct ti_bandgap { struct clk *div_clk; spinlock_t lock; /* shields this struct */ int irq; - int tshut_gpio; + struct gpio_desc *tshut_gpiod; u32 clk_rate; + struct notifier_block nb; + unsigned int is_suspended:1; }; /** @@ -254,8 +216,6 @@ struct ti_bandgap { * @ts_data: pointer to struct with thresholds, limits of temperature sensor * @registers: pointer to the list of register offsets and bitfields * @domain: the name of the domain where the sensor is located - * @slope: sensor gradient slope info for hotspot extrapolation equation - * @constant: sensor gradient const info for hotspot extrapolation equation * @slope_pcb: sensor gradient slope info for hotspot extrapolation equation * with no external influence * @constant_pcb: sensor gradient const info for hotspot extrapolation equation @@ -274,8 +234,6 @@ struct ti_temp_sensor { struct temp_sensor_registers *registers; char *domain; /* for hotspot extrapolation */ - const int slope; - const int constant; const int slope_pcb; const int constant_pcb; int (*register_cooling)(struct ti_bandgap *bgp, int id); @@ -318,6 +276,11 @@ struct ti_temp_sensor { * TI_BANDGAP_FEATURE_HISTORY_BUFFER - used when the bandgap device features * a history buffer of temperatures. * + * TI_BANDGAP_FEATURE_ERRATA_814 - used to workaorund when the bandgap device + * has Errata 814 + * TI_BANDGAP_FEATURE_UNRELIABLE - used when the sensor readings are too + * inaccurate. + * TI_BANDGAP_FEATURE_CONT_MODE_ONLY - used when single mode hangs the sensor * TI_BANDGAP_HAS(b, f) - macro to check if a bandgap device is capable of a * specific feature (above) or not. Return non-zero, if yes. */ @@ -331,6 +294,9 @@ struct ti_temp_sensor { #define TI_BANDGAP_FEATURE_FREEZE_BIT BIT(7) #define TI_BANDGAP_FEATURE_COUNTER_DELAY BIT(8) #define TI_BANDGAP_FEATURE_HISTORY_BUFFER BIT(9) +#define TI_BANDGAP_FEATURE_ERRATA_814 BIT(10) +#define TI_BANDGAP_FEATURE_UNRELIABLE BIT(11) +#define TI_BANDGAP_FEATURE_CONT_MODE_ONLY BIT(12) #define TI_BANDGAP_HAS(b, f) \ ((b)->conf->features & TI_BANDGAP_FEATURE_ ## f) @@ -370,10 +336,6 @@ struct ti_bandgap_data { struct ti_temp_sensor sensors[]; }; -int ti_bandgap_read_thot(struct ti_bandgap *bgp, int id, int *thot); -int ti_bandgap_write_thot(struct ti_bandgap *bgp, int id, int val); -int ti_bandgap_read_tcold(struct ti_bandgap *bgp, int id, int *tcold); -int ti_bandgap_write_tcold(struct ti_bandgap *bgp, int id, int val); int ti_bandgap_read_update_interval(struct ti_bandgap *bgp, int id, int *interval); int ti_bandgap_write_update_interval(struct ti_bandgap *bgp, int id, @@ -384,6 +346,14 @@ int ti_bandgap_set_sensor_data(struct ti_bandgap *bgp, int id, void *data); void *ti_bandgap_get_sensor_data(struct ti_bandgap *bgp, int id); int ti_bandgap_get_trend(struct ti_bandgap *bgp, int id, int *trend); +#ifdef CONFIG_OMAP3_THERMAL +extern const struct ti_bandgap_data omap34xx_data; +extern const struct ti_bandgap_data omap36xx_data; +#else +#define omap34xx_data NULL +#define omap36xx_data NULL +#endif + #ifdef CONFIG_OMAP4_THERMAL extern const struct ti_bandgap_data omap4430_data; extern const struct ti_bandgap_data omap4460_data; |