diff options
| -rw-r--r-- | drivers/staging/omap-thermal/Kconfig | 14 | ||||
| -rw-r--r-- | drivers/staging/omap-thermal/Makefile | 1 | ||||
| -rw-r--r-- | drivers/staging/omap-thermal/omap-bandgap.c | 14 | ||||
| -rw-r--r-- | drivers/staging/omap-thermal/omap-bandgap.h | 10 | ||||
| -rw-r--r-- | drivers/staging/omap-thermal/omap4-thermal.c | 259 |
5 files changed, 298 insertions, 0 deletions
diff --git a/drivers/staging/omap-thermal/Kconfig b/drivers/staging/omap-thermal/Kconfig index f44228c1b598..b0105d2197d4 100644 --- a/drivers/staging/omap-thermal/Kconfig +++ b/drivers/staging/omap-thermal/Kconfig @@ -18,3 +18,17 @@ config OMAP_THERMAL If you say yes here you want to get support for generic thermal framework for the Texas Instruments OMAP4460+ on die bandgap temperature sensor. + +config OMAP4_THERMAL + bool "Texas Instruments OMAP4 thermal support" + depends on OMAP_BANDGAP + depends on ARCH_OMAP4 + help + If you say yes here you get thermal support for the Texas Instruments + OMAP4 SoC family. The current chip supported are: + - OMAP4430 + - OMAP4460 + - OMAP4470 + + This includes alert interrupts generation and also the TSHUT + support. diff --git a/drivers/staging/omap-thermal/Makefile b/drivers/staging/omap-thermal/Makefile index fcdf77336fc8..76f9c190c5d0 100644 --- a/drivers/staging/omap-thermal/Makefile +++ b/drivers/staging/omap-thermal/Makefile @@ -1,3 +1,4 @@ obj-$(CONFIG_OMAP_BANDGAP) += omap-thermal.o omap-thermal-y := omap-bandgap.o omap-thermal-$(CONFIG_OMAP_THERMAL) += omap-thermal-common.o +omap-thermal-$(CONFIG_OMAP4_THERMAL) += omap4-thermal.o diff --git a/drivers/staging/omap-thermal/omap-bandgap.c b/drivers/staging/omap-thermal/omap-bandgap.c index 8ea626406a34..5158aa84ad42 100644 --- a/drivers/staging/omap-thermal/omap-bandgap.c +++ b/drivers/staging/omap-thermal/omap-bandgap.c @@ -1144,6 +1144,20 @@ static const struct dev_pm_ops omap_bandgap_dev_pm_ops = { #endif static const struct of_device_id of_omap_bandgap_match[] = { +#ifdef CONFIG_OMAP4_THERMAL + { + .compatible = "ti,omap4430-bandgap", + .data = (void *)&omap4430_data, + }, + { + .compatible = "ti,omap4460-bandgap", + .data = (void *)&omap4460_data, + }, + { + .compatible = "ti,omap4470-bandgap", + .data = (void *)&omap4470_data, + }, +#endif /* Sentinel */ { }, }; diff --git a/drivers/staging/omap-thermal/omap-bandgap.h b/drivers/staging/omap-thermal/omap-bandgap.h index 8b9883d0e1ed..6d442fe5daa3 100644 --- a/drivers/staging/omap-thermal/omap-bandgap.h +++ b/drivers/staging/omap-thermal/omap-bandgap.h @@ -422,4 +422,14 @@ 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 + #endif diff --git a/drivers/staging/omap-thermal/omap4-thermal.c b/drivers/staging/omap-thermal/omap4-thermal.c new file mode 100644 index 000000000000..fa9dbcd71830 --- /dev/null +++ b/drivers/staging/omap-thermal/omap4-thermal.c @@ -0,0 +1,259 @@ +/* + * OMAP4 thermal driver. + * + * Copyright (C) 2011-2012 Texas Instruments Inc. + * Contact: + * Eduardo Valentin <eduardo.valentin@ti.com> + * + * 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. + * + */ + +#include "omap-thermal.h" +#include "omap-bandgap.h" + +/* + * OMAP4430 has one instance of thermal sensor for MPU + * need to describe the individual bit fields + */ +static struct temp_sensor_registers +omap4430_mpu_temp_sensor_registers = { + .temp_sensor_ctrl = OMAP4430_TEMP_SENSOR_CTRL_OFFSET, + .bgap_tempsoff_mask = OMAP4430_BGAP_TEMPSOFF_MASK, + .bgap_soc_mask = OMAP4430_BGAP_TEMP_SENSOR_SOC_MASK, + .bgap_eocz_mask = OMAP4430_BGAP_TEMP_SENSOR_EOCZ_MASK, + .bgap_dtemp_mask = OMAP4430_BGAP_TEMP_SENSOR_DTEMP_MASK, + + .bgap_mode_ctrl = OMAP4430_TEMP_SENSOR_CTRL_OFFSET, + .mode_ctrl_mask = OMAP4430_SINGLE_MODE_MASK, + + .bgap_efuse = OMAP4430_FUSE_OPP_BGAP, +}; + +/* Thresholds and limits for OMAP4430 MPU temperature sensor */ +static struct temp_sensor_data omap4430_mpu_temp_sensor_data = { + .min_freq = OMAP4430_MIN_FREQ, + .max_freq = OMAP4430_MAX_FREQ, + .max_temp = OMAP4430_MAX_TEMP, + .min_temp = OMAP4430_MIN_TEMP, + .hyst_val = OMAP4430_HYST_VAL, + .adc_start_val = OMAP4430_ADC_START_VALUE, + .adc_end_val = OMAP4430_ADC_END_VALUE, +}; + +/* + * Temperature values in milli degree celsius + * ADC code values from 530 to 923 + */ +static const int +omap4430_adc_to_temp[OMAP4430_ADC_END_VALUE - OMAP4430_ADC_START_VALUE + 1] = { + -38000, -35000, -34000, -32000, -30000, -28000, -26000, -24000, -22000, + -20000, -18000, -17000, -15000, -13000, -12000, -10000, -8000, -6000, + -5000, -3000, -1000, 0, 2000, 3000, 5000, 6000, 8000, 10000, 12000, + 13000, 15000, 17000, 19000, 21000, 23000, 25000, 27000, 28000, 30000, + 32000, 33000, 35000, 37000, 38000, 40000, 42000, 43000, 45000, 47000, + 48000, 50000, 52000, 53000, 55000, 57000, 58000, 60000, 62000, 64000, + 66000, 68000, 70000, 71000, 73000, 75000, 77000, 78000, 80000, 82000, + 83000, 85000, 87000, 88000, 90000, 92000, 93000, 95000, 97000, 98000, + 100000, 102000, 103000, 105000, 107000, 109000, 111000, 113000, 115000, + 117000, 118000, 120000, 122000, 123000, +}; + +/* OMAP4430 data */ +const struct omap_bandgap_data omap4430_data = { + .features = OMAP_BANDGAP_FEATURE_MODE_CONFIG | + OMAP_BANDGAP_FEATURE_POWER_SWITCH, + .fclock_name = "bandgap_fclk", + .div_ck_name = "bandgap_fclk", + .conv_table = omap4430_adc_to_temp, + .expose_sensor = omap_thermal_expose_sensor, + .remove_sensor = omap_thermal_remove_sensor, + .sensors = { + { + .registers = &omap4430_mpu_temp_sensor_registers, + .ts_data = &omap4430_mpu_temp_sensor_data, + .domain = "cpu", + .slope = 0, + .constant = 20000, + .slope_pcb = 0, + .constant_pcb = 20000, + .register_cooling = omap_thermal_register_cpu_cooling, + .unregister_cooling = omap_thermal_unregister_cpu_cooling, + }, + }, + .sensor_count = 1, +}; +/* + * OMAP4460 has one instance of thermal sensor for MPU + * need to describe the individual bit fields + */ +static struct temp_sensor_registers +omap4460_mpu_temp_sensor_registers = { + .temp_sensor_ctrl = OMAP4460_TEMP_SENSOR_CTRL_OFFSET, + .bgap_tempsoff_mask = OMAP4460_BGAP_TEMPSOFF_MASK, + .bgap_soc_mask = OMAP4460_BGAP_TEMP_SENSOR_SOC_MASK, + .bgap_eocz_mask = OMAP4460_BGAP_TEMP_SENSOR_EOCZ_MASK, + .bgap_dtemp_mask = OMAP4460_BGAP_TEMP_SENSOR_DTEMP_MASK, + + .bgap_mask_ctrl = OMAP4460_BGAP_CTRL_OFFSET, + .mask_hot_mask = OMAP4460_MASK_HOT_MASK, + .mask_cold_mask = OMAP4460_MASK_COLD_MASK, + + .bgap_mode_ctrl = OMAP4460_BGAP_CTRL_OFFSET, + .mode_ctrl_mask = OMAP4460_SINGLE_MODE_MASK, + + .bgap_counter = OMAP4460_BGAP_COUNTER_OFFSET, + .counter_mask = OMAP4460_COUNTER_MASK, + + .bgap_threshold = OMAP4460_BGAP_THRESHOLD_OFFSET, + .threshold_thot_mask = OMAP4460_T_HOT_MASK, + .threshold_tcold_mask = OMAP4460_T_COLD_MASK, + + .tshut_threshold = OMAP4460_BGAP_TSHUT_OFFSET, + .tshut_hot_mask = OMAP4460_TSHUT_HOT_MASK, + .tshut_cold_mask = OMAP4460_TSHUT_COLD_MASK, + + .bgap_status = OMAP4460_BGAP_STATUS_OFFSET, + .status_clean_stop_mask = OMAP4460_CLEAN_STOP_MASK, + .status_bgap_alert_mask = OMAP4460_BGAP_ALERT_MASK, + .status_hot_mask = OMAP4460_HOT_FLAG_MASK, + .status_cold_mask = OMAP4460_COLD_FLAG_MASK, + + .bgap_efuse = OMAP4460_FUSE_OPP_BGAP, +}; + +/* Thresholds and limits for OMAP4460 MPU temperature sensor */ +static struct temp_sensor_data omap4460_mpu_temp_sensor_data = { + .tshut_hot = OMAP4460_TSHUT_HOT, + .tshut_cold = OMAP4460_TSHUT_COLD, + .t_hot = OMAP4460_T_HOT, + .t_cold = OMAP4460_T_COLD, + .min_freq = OMAP4460_MIN_FREQ, + .max_freq = OMAP4460_MAX_FREQ, + .max_temp = OMAP4460_MAX_TEMP, + .min_temp = OMAP4460_MIN_TEMP, + .hyst_val = OMAP4460_HYST_VAL, + .adc_start_val = OMAP4460_ADC_START_VALUE, + .adc_end_val = OMAP4460_ADC_END_VALUE, + .update_int1 = 1000, + .update_int2 = 2000, +}; + +/* + * Temperature values in milli degree celsius + * ADC code values from 530 to 923 + */ +static const int +omap4460_adc_to_temp[OMAP4460_ADC_END_VALUE - OMAP4460_ADC_START_VALUE + 1] = { + -40000, -40000, -40000, -40000, -39800, -39400, -39000, -38600, -38200, + -37800, -37300, -36800, -36400, -36000, -35600, -35200, -34800, + -34300, -33800, -33400, -33000, -32600, -32200, -31800, -31300, + -30800, -30400, -30000, -29600, -29200, -28700, -28200, -27800, + -27400, -27000, -26600, -26200, -25700, -25200, -24800, -24400, + -24000, -23600, -23200, -22700, -22200, -21800, -21400, -21000, + -20600, -20200, -19700, -19200, -18800, -18400, -18000, -17600, + -17200, -16700, -16200, -15800, -15400, -15000, -14600, -14200, + -13700, -13200, -12800, -12400, -12000, -11600, -11200, -10700, + -10200, -9800, -9400, -9000, -8600, -8200, -7700, -7200, -6800, + -6400, -6000, -5600, -5200, -4800, -4300, -3800, -3400, -3000, + -2600, -2200, -1800, -1300, -800, -400, 0, 400, 800, 1200, 1600, + 2100, 2600, 3000, 3400, 3800, 4200, 4600, 5100, 5600, 6000, 6400, + 6800, 7200, 7600, 8000, 8500, 9000, 9400, 9800, 10200, 10600, 11000, + 11400, 11900, 12400, 12800, 13200, 13600, 14000, 14400, 14800, + 15300, 15800, 16200, 16600, 17000, 17400, 17800, 18200, 18700, + 19200, 19600, 20000, 20400, 20800, 21200, 21600, 22100, 22600, + 23000, 23400, 23800, 24200, 24600, 25000, 25400, 25900, 26400, + 26800, 27200, 27600, 28000, 28400, 28800, 29300, 29800, 30200, + 30600, 31000, 31400, 31800, 32200, 32600, 33100, 33600, 34000, + 34400, 34800, 35200, 35600, 36000, 36400, 36800, 37300, 37800, + 38200, 38600, 39000, 39400, 39800, 40200, 40600, 41100, 41600, + 42000, 42400, 42800, 43200, 43600, 44000, 44400, 44800, 45300, + 45800, 46200, 46600, 47000, 47400, 47800, 48200, 48600, 49000, + 49500, 50000, 50400, 50800, 51200, 51600, 52000, 52400, 52800, + 53200, 53700, 54200, 54600, 55000, 55400, 55800, 56200, 56600, + 57000, 57400, 57800, 58200, 58700, 59200, 59600, 60000, 60400, + 60800, 61200, 61600, 62000, 62400, 62800, 63300, 63800, 64200, + 64600, 65000, 65400, 65800, 66200, 66600, 67000, 67400, 67800, + 68200, 68700, 69200, 69600, 70000, 70400, 70800, 71200, 71600, + 72000, 72400, 72800, 73200, 73600, 74100, 74600, 75000, 75400, + 75800, 76200, 76600, 77000, 77400, 77800, 78200, 78600, 79000, + 79400, 79800, 80300, 80800, 81200, 81600, 82000, 82400, 82800, + 83200, 83600, 84000, 84400, 84800, 85200, 85600, 86000, 86400, + 86800, 87300, 87800, 88200, 88600, 89000, 89400, 89800, 90200, + 90600, 91000, 91400, 91800, 92200, 92600, 93000, 93400, 93800, + 94200, 94600, 95000, 95500, 96000, 96400, 96800, 97200, 97600, + 98000, 98400, 98800, 99200, 99600, 100000, 100400, 100800, 101200, + 101600, 102000, 102400, 102800, 103200, 103600, 104000, 104400, + 104800, 105200, 105600, 106100, 106600, 107000, 107400, 107800, + 108200, 108600, 109000, 109400, 109800, 110200, 110600, 111000, + 111400, 111800, 112200, 112600, 113000, 113400, 113800, 114200, + 114600, 115000, 115400, 115800, 116200, 116600, 117000, 117400, + 117800, 118200, 118600, 119000, 119400, 119800, 120200, 120600, + 121000, 121400, 121800, 122200, 122600, 123000, 123400, 123800, 124200, + 124600, 124900, 125000, 125000, 125000, 125000 +}; + +/* OMAP4460 data */ +const struct omap_bandgap_data omap4460_data = { + .features = OMAP_BANDGAP_FEATURE_TSHUT | + OMAP_BANDGAP_FEATURE_TSHUT_CONFIG | + OMAP_BANDGAP_FEATURE_TALERT | + OMAP_BANDGAP_FEATURE_MODE_CONFIG | + OMAP_BANDGAP_FEATURE_POWER_SWITCH | + OMAP_BANDGAP_FEATURE_COUNTER, + .fclock_name = "bandgap_ts_fclk", + .div_ck_name = "div_ts_ck", + .conv_table = omap4460_adc_to_temp, + .expose_sensor = omap_thermal_expose_sensor, + .remove_sensor = omap_thermal_remove_sensor, + .sensors = { + { + .registers = &omap4460_mpu_temp_sensor_registers, + .ts_data = &omap4460_mpu_temp_sensor_data, + .domain = "cpu", + .slope = OMAP_GRADIENT_SLOPE_4460, + .constant = OMAP_GRADIENT_CONST_4460, + .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4460, + .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4460, + .register_cooling = omap_thermal_register_cpu_cooling, + .unregister_cooling = omap_thermal_unregister_cpu_cooling, + }, + }, + .sensor_count = 1, +}; + +/* OMAP4470 data */ +const struct omap_bandgap_data omap4470_data = { + .features = OMAP_BANDGAP_FEATURE_TSHUT | + OMAP_BANDGAP_FEATURE_TSHUT_CONFIG | + OMAP_BANDGAP_FEATURE_TALERT | + OMAP_BANDGAP_FEATURE_MODE_CONFIG | + OMAP_BANDGAP_FEATURE_POWER_SWITCH | + OMAP_BANDGAP_FEATURE_COUNTER, + .fclock_name = "bandgap_ts_fclk", + .div_ck_name = "div_ts_ck", + .conv_table = omap4460_adc_to_temp, + .expose_sensor = omap_thermal_expose_sensor, + .remove_sensor = omap_thermal_remove_sensor, + .sensors = { + { + .registers = &omap4460_mpu_temp_sensor_registers, + .ts_data = &omap4460_mpu_temp_sensor_data, + .domain = "cpu", + .slope = OMAP_GRADIENT_SLOPE_4470, + .constant = OMAP_GRADIENT_CONST_4470, + .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4470, + .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4470, + .register_cooling = omap_thermal_register_cpu_cooling, + .unregister_cooling = omap_thermal_unregister_cpu_cooling, + }, + }, + .sensor_count = 1, +}; 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