thermal: introduce TI SoC thermal driver

This patch moves the ti-soc-thermal driver out of
the staging tree to the thermal tree.

Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <eduardo.valentin@ti.com>
Cc: J Keerthy <j-keerthy@ti.com>
Cc: Radhesh Fadnis <radhesh.fadnis@ti.com>
Cc: Cyril Roelandt <tipecaml@gmail.com>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: devel@driverdev.osuosl.org
Cc: linux-pm@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

11 files changed, 3499 insertions, 0 deletions

diff --git a/drivers/thermal/ti-soc-thermal/Kconfig b/drivers/thermal/ti-soc-thermal/Kconfig
new file mode 100644
index 000000000000..e81375fb2155
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/Kconfig
@@ -0,0 +1,48 @@
+config TI_SOC_THERMAL
+	tristate "Texas Instruments SoCs temperature sensor driver"
+	depends on THERMAL
+	depends on ARCH_HAS_BANDGAP
+	help
+	  If you say yes here you get support for the Texas Instruments
+	  OMAP4460+ on die bandgap temperature sensor support. The register
+	  set is part of system control module.
+
+	  This includes alert interrupts generation and also the TSHUT
+	  support.
+
+config TI_THERMAL
+	bool "Texas Instruments SoCs thermal framework support"
+	depends on TI_SOC_THERMAL
+	depends on CPU_THERMAL
+	help
+	  If you say yes here you want to get support for generic thermal
+	  framework for the Texas Instruments on die bandgap temperature sensor.
+
+	  This includes trip points definitions, extrapolation rules and
+	  CPU cooling device bindings.
+
+config OMAP4_THERMAL
+	bool "Texas Instruments OMAP4 thermal support"
+	depends on TI_SOC_THERMAL
+	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.
+
+config OMAP5_THERMAL
+	bool "Texas Instruments OMAP5 thermal support"
+	depends on TI_SOC_THERMAL
+	depends on SOC_OMAP5
+	help
+	  If you say yes here you get thermal support for the Texas Instruments
+	  OMAP5 SoC family. The current chip supported are:
+	   - OMAP5430
+
+	  This includes alert interrupts generation and also the TSHUT
+	  support.
diff --git a/drivers/thermal/ti-soc-thermal/Makefile b/drivers/thermal/ti-soc-thermal/Makefile
new file mode 100644
index 000000000000..0ca034fb419d
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/Makefile
@@ -0,0 +1,5 @@
+obj-$(CONFIG_TI_SOC_THERMAL)		+= ti-soc-thermal.o
+ti-soc-thermal-y			:= ti-bandgap.o
+ti-soc-thermal-$(CONFIG_TI_THERMAL)	+= ti-thermal-common.o
+ti-soc-thermal-$(CONFIG_OMAP4_THERMAL)	+= omap4-thermal-data.o
+ti-soc-thermal-$(CONFIG_OMAP5_THERMAL)	+= omap5-thermal-data.o
diff --git a/drivers/thermal/ti-soc-thermal/TODO b/drivers/thermal/ti-soc-thermal/TODO
new file mode 100644
index 000000000000..7da787d19241
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/TODO
@@ -0,0 +1,12 @@
+List of TODOs (by Eduardo Valentin)
+
+on ti-bandgap.c:
+- Revisit PM support
+
+on ti-thermal-common.c/ti-thermal.h:
+- Revisit need for locking
+
+generally:
+- make sure this code works on OMAP4430, OMAP4460 and OMAP5430
+
+Copy patches to Eduardo Valentin <eduardo.valentin@ti.com>
diff --git a/drivers/thermal/ti-soc-thermal/omap4-thermal-data.c b/drivers/thermal/ti-soc-thermal/omap4-thermal-data.c
new file mode 100644
index 000000000000..d255d33da9eb
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/omap4-thermal-data.c
@@ -0,0 +1,267 @@
+/*
+ * 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 "ti-thermal.h"
+#include "ti-bandgap.h"
+#include "omap4xxx-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,
+};
+
+/*
+ * 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 ti_bandgap_data omap4430_data = {
+	.features = TI_BANDGAP_FEATURE_MODE_CONFIG |
+			TI_BANDGAP_FEATURE_CLK_CTRL |
+			TI_BANDGAP_FEATURE_POWER_SWITCH,
+	.fclock_name = "bandgap_fclk",
+	.div_ck_name = "bandgap_fclk",
+	.conv_table = omap4430_adc_to_temp,
+	.adc_start_val = OMAP4430_ADC_START_VALUE,
+	.adc_end_val = OMAP4430_ADC_END_VALUE,
+	.expose_sensor = ti_thermal_expose_sensor,
+	.remove_sensor = ti_thermal_remove_sensor,
+	.sensors = {
+		{
+		.registers = &omap4430_mpu_temp_sensor_registers,
+		.ts_data = &omap4430_mpu_temp_sensor_data,
+		.domain = "cpu",
+		.slope = OMAP_GRADIENT_SLOPE_4430,
+		.constant = OMAP_GRADIENT_CONST_4430,
+		.slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4430,
+		.constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4430,
+		.register_cooling = ti_thermal_register_cpu_cooling,
+		.unregister_cooling = ti_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,
+	.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 ti_bandgap_data omap4460_data = {
+	.features = TI_BANDGAP_FEATURE_TSHUT |
+			TI_BANDGAP_FEATURE_TSHUT_CONFIG |
+			TI_BANDGAP_FEATURE_TALERT |
+			TI_BANDGAP_FEATURE_MODE_CONFIG |
+			TI_BANDGAP_FEATURE_POWER_SWITCH |
+			TI_BANDGAP_FEATURE_CLK_CTRL |
+			TI_BANDGAP_FEATURE_COUNTER,
+	.fclock_name = "bandgap_ts_fclk",
+	.div_ck_name = "div_ts_ck",
+	.conv_table = omap4460_adc_to_temp,
+	.adc_start_val = OMAP4460_ADC_START_VALUE,
+	.adc_end_val = OMAP4460_ADC_END_VALUE,
+	.expose_sensor = ti_thermal_expose_sensor,
+	.remove_sensor = ti_thermal_remove_sensor,
+	.report_temperature = ti_thermal_report_sensor_temperature,
+	.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 = ti_thermal_register_cpu_cooling,
+		.unregister_cooling = ti_thermal_unregister_cpu_cooling,
+		},
+	},
+	.sensor_count = 1,
+};
+
+/* OMAP4470 data */
+const struct ti_bandgap_data omap4470_data = {
+	.features = TI_BANDGAP_FEATURE_TSHUT |
+			TI_BANDGAP_FEATURE_TSHUT_CONFIG |
+			TI_BANDGAP_FEATURE_TALERT |
+			TI_BANDGAP_FEATURE_MODE_CONFIG |
+			TI_BANDGAP_FEATURE_POWER_SWITCH |
+			TI_BANDGAP_FEATURE_CLK_CTRL |
+			TI_BANDGAP_FEATURE_COUNTER,
+	.fclock_name = "bandgap_ts_fclk",
+	.div_ck_name = "div_ts_ck",
+	.conv_table = omap4460_adc_to_temp,
+	.adc_start_val = OMAP4460_ADC_START_VALUE,
+	.adc_end_val = OMAP4460_ADC_END_VALUE,
+	.expose_sensor = ti_thermal_expose_sensor,
+	.remove_sensor = ti_thermal_remove_sensor,
+	.report_temperature = ti_thermal_report_sensor_temperature,
+	.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 = ti_thermal_register_cpu_cooling,
+		.unregister_cooling = ti_thermal_unregister_cpu_cooling,
+		},
+	},
+	.sensor_count = 1,
+};
diff --git a/drivers/thermal/ti-soc-thermal/omap4xxx-bandgap.h b/drivers/thermal/ti-soc-thermal/omap4xxx-bandgap.h
new file mode 100644
index 000000000000..6f2de3a3356d
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/omap4xxx-bandgap.h
@@ -0,0 +1,175 @@
+/*
+ * OMAP4xxx bandgap registers, bitfields and temperature definitions
+ *
+ * Copyright (C) 2013 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 __OMAP4XXX_BANDGAP_H
+#define __OMAP4XXX_BANDGAP_H
+
+/**
+ * *** OMAP4430 ***
+ *
+ * Below, in sequence, are the Register definitions,
+ * the bitfields and the temperature definitions for OMAP4430.
+ */
+
+/**
+ * OMAP4430 register definitions
+ *
+ * Registers are defined as offsets. The offsets are
+ * relative to FUSE_OPP_BGAP on 4430.
+ */
+
+/* OMAP4430.FUSE_OPP_BGAP */
+#define OMAP4430_FUSE_OPP_BGAP				0x0
+
+/* OMAP4430.TEMP_SENSOR  */
+#define OMAP4430_TEMP_SENSOR_CTRL_OFFSET		0xCC
+
+/**
+ * Register and bit definitions for OMAP4430
+ *
+ * All the macros bellow define the required bits for
+ * controlling temperature on OMAP4430. Bit defines are
+ * grouped by register.
+ */
+
+/* OMAP4430.TEMP_SENSOR bits */
+#define OMAP4430_BGAP_TEMPSOFF_MASK			BIT(12)
+#define OMAP4430_BGAP_TSHUT_MASK			BIT(11)
+#define OMAP4430_SINGLE_MODE_MASK			BIT(10)
+#define OMAP4430_BGAP_TEMP_SENSOR_SOC_MASK		BIT(9)
+#define OMAP4430_BGAP_TEMP_SENSOR_EOCZ_MASK		BIT(8)
+#define OMAP4430_BGAP_TEMP_SENSOR_DTEMP_MASK		(0xff << 0)
+
+/**
+ * Temperature limits and thresholds for OMAP4430
+ *
+ * All the macros bellow are definitions for handling the
+ * ADC conversions and representation of temperature limits
+ * and thresholds for OMAP4430.
+ */
+
+/* ADC conversion table limits */
+#define OMAP4430_ADC_START_VALUE			0
+#define OMAP4430_ADC_END_VALUE				127
+/* bandgap clock limits (no control on 4430) */
+#define OMAP4430_MAX_FREQ				32768
+#define OMAP4430_MIN_FREQ				32768
+/* sensor limits */
+#define OMAP4430_MIN_TEMP				-40000
+#define OMAP4430_MAX_TEMP				125000
+#define OMAP4430_HYST_VAL				5000
+
+/**
+ * *** OMAP4460 *** Applicable for OMAP4470
+ *
+ * Below, in sequence, are the Register definitions,
+ * the bitfields and the temperature definitions for OMAP4460.
+ */
+
+/**
+ * OMAP4460 register definitions
+ *
+ * Registers are defined as offsets. The offsets are
+ * relative to FUSE_OPP_BGAP on 4460.
+ */
+
+/* OMAP4460.FUSE_OPP_BGAP */
+#define OMAP4460_FUSE_OPP_BGAP				0x0
+
+/* OMAP4460.TEMP_SENSOR */
+#define OMAP4460_TEMP_SENSOR_CTRL_OFFSET		0xCC
+
+/* OMAP4460.BANDGAP_CTRL */
+#define OMAP4460_BGAP_CTRL_OFFSET			0x118
+
+/* OMAP4460.BANDGAP_COUNTER */
+#define OMAP4460_BGAP_COUNTER_OFFSET			0x11C
+
+/* OMAP4460.BANDGAP_THRESHOLD */
+#define OMAP4460_BGAP_THRESHOLD_OFFSET			0x120
+
+/* OMAP4460.TSHUT_THRESHOLD */
+#define OMAP4460_BGAP_TSHUT_OFFSET			0x124
+
+/* OMAP4460.BANDGAP_STATUS */
+#define OMAP4460_BGAP_STATUS_OFFSET			0x128
+
+/**
+ * Register bitfields for OMAP4460
+ *
+ * All the macros bellow define the required bits for
+ * controlling temperature on OMAP4460. Bit defines are
+ * grouped by register.
+ */
+/* OMAP4460.TEMP_SENSOR bits */
+#define OMAP4460_BGAP_TEMPSOFF_MASK			BIT(13)
+#define OMAP4460_BGAP_TEMP_SENSOR_SOC_MASK		BIT(11)
+#define OMAP4460_BGAP_TEMP_SENSOR_EOCZ_MASK		BIT(10)
+#define OMAP4460_BGAP_TEMP_SENSOR_DTEMP_MASK		(0x3ff << 0)
+
+/* OMAP4460.BANDGAP_CTRL bits */
+#define OMAP4460_SINGLE_MODE_MASK			BIT(31)
+#define OMAP4460_MASK_HOT_MASK				BIT(1)
+#define OMAP4460_MASK_COLD_MASK				BIT(0)
+
+/* OMAP4460.BANDGAP_COUNTER bits */
+#define OMAP4460_COUNTER_MASK				(0xffffff << 0)
+
+/* OMAP4460.BANDGAP_THRESHOLD bits */
+#define OMAP4460_T_HOT_MASK				(0x3ff << 16)
+#define OMAP4460_T_COLD_MASK				(0x3ff << 0)
+
+/* OMAP4460.TSHUT_THRESHOLD bits */
+#define OMAP4460_TSHUT_HOT_MASK				(0x3ff << 16)
+#define OMAP4460_TSHUT_COLD_MASK			(0x3ff << 0)
+
+/* OMAP4460.BANDGAP_STATUS bits */
+#define OMAP4460_CLEAN_STOP_MASK			BIT(3)
+#define OMAP4460_BGAP_ALERT_MASK			BIT(2)
+#define OMAP4460_HOT_FLAG_MASK				BIT(1)
+#define OMAP4460_COLD_FLAG_MASK				BIT(0)
+
+/**
+ * Temperature limits and thresholds for OMAP4460
+ *
+ * All the macros bellow are definitions for handling the
+ * ADC conversions and representation of temperature limits
+ * and thresholds for OMAP4460.
+ */
+
+/* ADC conversion table limits */
+#define OMAP4460_ADC_START_VALUE			530
+#define OMAP4460_ADC_END_VALUE				932
+/* bandgap clock limits */
+#define OMAP4460_MAX_FREQ				1500000
+#define OMAP4460_MIN_FREQ				1000000
+/* sensor limits */
+#define OMAP4460_MIN_TEMP				-40000
+#define OMAP4460_MAX_TEMP				123000
+#define OMAP4460_HYST_VAL				5000
+/* interrupts thresholds */
+#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 */
+
+#endif /* __OMAP4XXX_BANDGAP_H */
diff --git a/drivers/thermal/ti-soc-thermal/omap5-thermal-data.c b/drivers/thermal/ti-soc-thermal/omap5-thermal-data.c
new file mode 100644
index 000000000000..eff0c80fd4af
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/omap5-thermal-data.c
@@ -0,0 +1,359 @@
+/*
+ * OMAP5 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 "ti-thermal.h"
+#include "ti-bandgap.h"
+#include "omap5xxx-bandgap.h"
+
+/*
+ * OMAP5430 has three instances of thermal sensor for MPU, GPU & CORE,
+ * need to describe the individual registers and bit fields.
+ */
+
+/*
+ * OMAP5430 MPU thermal sensor register offset and bit-fields
+ */
+static struct temp_sensor_registers
+omap5430_mpu_temp_sensor_registers = {
+	.temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_MPU_OFFSET,
+	.bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK,
+	.bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK,
+	.bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK,
+
+	.bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET,
+	.mask_hot_mask = OMAP5430_MASK_HOT_MPU_MASK,
+	.mask_cold_mask = OMAP5430_MASK_COLD_MPU_MASK,
+	.mask_sidlemode_mask = OMAP5430_MASK_SIDLEMODE_MASK,
+	.mask_counter_delay_mask = OMAP5430_MASK_COUNTER_DELAY_MASK,
+	.mask_freeze_mask = OMAP5430_MASK_FREEZE_MPU_MASK,
+	.mask_clear_mask = OMAP5430_MASK_CLEAR_MPU_MASK,
+	.mask_clear_accum_mask = OMAP5430_MASK_CLEAR_ACCUM_MPU_MASK,
+
+
+	.bgap_counter = OMAP5430_BGAP_CTRL_OFFSET,
+	.counter_mask = OMAP5430_COUNTER_MASK,
+
+	.bgap_threshold = OMAP5430_BGAP_THRESHOLD_MPU_OFFSET,
+	.threshold_thot_mask = OMAP5430_T_HOT_MASK,
+	.threshold_tcold_mask = OMAP5430_T_COLD_MASK,
+
+	.tshut_threshold = OMAP5430_BGAP_TSHUT_MPU_OFFSET,
+	.tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK,
+	.tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK,
+
+	.bgap_status = OMAP5430_BGAP_STATUS_OFFSET,
+	.status_clean_stop_mask = 0x0,
+	.status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK,
+	.status_hot_mask = OMAP5430_HOT_MPU_FLAG_MASK,
+	.status_cold_mask = OMAP5430_COLD_MPU_FLAG_MASK,
+
+	.bgap_cumul_dtemp = OMAP5430_BGAP_CUMUL_DTEMP_MPU_OFFSET,
+	.ctrl_dtemp_0 = OMAP5430_BGAP_DTEMP_MPU_0_OFFSET,
+	.ctrl_dtemp_1 = OMAP5430_BGAP_DTEMP_MPU_1_OFFSET,
+	.ctrl_dtemp_2 = OMAP5430_BGAP_DTEMP_MPU_2_OFFSET,
+	.ctrl_dtemp_3 = OMAP5430_BGAP_DTEMP_MPU_3_OFFSET,
+	.ctrl_dtemp_4 = OMAP5430_BGAP_DTEMP_MPU_4_OFFSET,
+	.bgap_efuse = OMAP5430_FUSE_OPP_BGAP_MPU,
+};
+
+/*
+ * OMAP5430 GPU thermal sensor register offset and bit-fields
+ */
+static struct temp_sensor_registers
+omap5430_gpu_temp_sensor_registers = {
+	.temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_GPU_OFFSET,
+	.bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK,
+	.bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK,
+	.bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK,
+
+	.bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET,
+	.mask_hot_mask = OMAP5430_MASK_HOT_GPU_MASK,
+	.mask_cold_mask = OMAP5430_MASK_COLD_GPU_MASK,
+	.mask_sidlemode_mask = OMAP5430_MASK_SIDLEMODE_MASK,
+	.mask_counter_delay_mask = OMAP5430_MASK_COUNTER_DELAY_MASK,
+	.mask_freeze_mask = OMAP5430_MASK_FREEZE_GPU_MASK,
+	.mask_clear_mask = OMAP5430_MASK_CLEAR_GPU_MASK,
+	.mask_clear_accum_mask = OMAP5430_MASK_CLEAR_ACCUM_GPU_MASK,
+
+	.bgap_counter = OMAP5430_BGAP_CTRL_OFFSET,
+	.counter_mask = OMAP5430_COUNTER_MASK,
+
+	.bgap_threshold = OMAP5430_BGAP_THRESHOLD_GPU_OFFSET,
+	.threshold_thot_mask = OMAP5430_T_HOT_MASK,
+	.threshold_tcold_mask = OMAP5430_T_COLD_MASK,
+
+	.tshut_threshold = OMAP5430_BGAP_TSHUT_GPU_OFFSET,
+	.tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK,
+	.tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK,
+
+	.bgap_status = OMAP5430_BGAP_STATUS_OFFSET,
+	.status_clean_stop_mask = 0x0,
+	.status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK,
+	.status_hot_mask = OMAP5430_HOT_GPU_FLAG_MASK,
+	.status_cold_mask = OMAP5430_COLD_GPU_FLAG_MASK,
+
+	.bgap_cumul_dtemp = OMAP5430_BGAP_CUMUL_DTEMP_GPU_OFFSET,
+	.ctrl_dtemp_0 = OMAP5430_BGAP_DTEMP_GPU_0_OFFSET,
+	.ctrl_dtemp_1 = OMAP5430_BGAP_DTEMP_GPU_1_OFFSET,
+	.ctrl_dtemp_2 = OMAP5430_BGAP_DTEMP_GPU_2_OFFSET,
+	.ctrl_dtemp_3 = OMAP5430_BGAP_DTEMP_GPU_3_OFFSET,
+	.ctrl_dtemp_4 = OMAP5430_BGAP_DTEMP_GPU_4_OFFSET,
+
+	.bgap_efuse = OMAP5430_FUSE_OPP_BGAP_GPU,
+};
+
+/*
+ * OMAP5430 CORE thermal sensor register offset and bit-fields
+ */
+static struct temp_sensor_registers
+omap5430_core_temp_sensor_registers = {
+	.temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_CORE_OFFSET,
+	.bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK,
+	.bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK,
+	.bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK,
+
+	.bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET,
+	.mask_hot_mask = OMAP5430_MASK_HOT_CORE_MASK,
+	.mask_cold_mask = OMAP5430_MASK_COLD_CORE_MASK,
+	.mask_sidlemode_mask = OMAP5430_MASK_SIDLEMODE_MASK,
+	.mask_counter_delay_mask = OMAP5430_MASK_COUNTER_DELAY_MASK,
+	.mask_freeze_mask = OMAP5430_MASK_FREEZE_CORE_MASK,
+	.mask_clear_mask = OMAP5430_MASK_CLEAR_CORE_MASK,
+	.mask_clear_accum_mask = OMAP5430_MASK_CLEAR_ACCUM_CORE_MASK,
+
+	.bgap_counter = OMAP5430_BGAP_CTRL_OFFSET,
+	.counter_mask = OMAP5430_COUNTER_MASK,
+
+	.bgap_threshold = OMAP5430_BGAP_THRESHOLD_CORE_OFFSET,
+	.threshold_thot_mask = OMAP5430_T_HOT_MASK,
+	.threshold_tcold_mask = OMAP5430_T_COLD_MASK,
+
+	.tshut_threshold = OMAP5430_BGAP_TSHUT_CORE_OFFSET,
+	.tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK,
+	.tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK,
+
+	.bgap_status = OMAP5430_BGAP_STATUS_OFFSET,
+	.status_clean_stop_mask = 0x0,
+	.status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK,
+	.status_hot_mask = OMAP5430_HOT_CORE_FLAG_MASK,
+	.status_cold_mask = OMAP5430_COLD_CORE_FLAG_MASK,
+
+	.bgap_cumul_dtemp = OMAP5430_BGAP_CUMUL_DTEMP_CORE_OFFSET,
+	.ctrl_dtemp_0 = OMAP5430_BGAP_DTEMP_CORE_0_OFFSET,
+	.ctrl_dtemp_1 = OMAP5430_BGAP_DTEMP_CORE_1_OFFSET,
+	.ctrl_dtemp_2 = OMAP5430_BGAP_DTEMP_CORE_2_OFFSET,
+	.ctrl_dtemp_3 = OMAP5430_BGAP_DTEMP_CORE_3_OFFSET,
+	.ctrl_dtemp_4 = OMAP5430_BGAP_DTEMP_CORE_4_OFFSET,
+
+	.bgap_efuse = OMAP5430_FUSE_OPP_BGAP_CORE,
+};
+
+/* Thresholds and limits for OMAP5430 MPU temperature sensor */
+static struct temp_sensor_data omap5430_mpu_temp_sensor_data = {
+	.tshut_hot = OMAP5430_MPU_TSHUT_HOT,
+	.tshut_cold = OMAP5430_MPU_TSHUT_COLD,
+	.t_hot = OMAP5430_MPU_T_HOT,
+	.t_cold = OMAP5430_MPU_T_COLD,
+	.min_freq = OMAP5430_MPU_MIN_FREQ,
+	.max_freq = OMAP5430_MPU_MAX_FREQ,
+	.max_temp = OMAP5430_MPU_MAX_TEMP,
+	.min_temp = OMAP5430_MPU_MIN_TEMP,
+	.hyst_val = OMAP5430_MPU_HYST_VAL,
+	.update_int1 = 1000,
+	.update_int2 = 2000,
+};
+
+/* Thresholds and limits for OMAP5430 GPU temperature sensor */
+static struct temp_sensor_data omap5430_gpu_temp_sensor_data = {
+	.tshut_hot = OMAP5430_GPU_TSHUT_HOT,
+	.tshut_cold = OMAP5430_GPU_TSHUT_COLD,
+	.t_hot = OMAP5430_GPU_T_HOT,
+	.t_cold = OMAP5430_GPU_T_COLD,
+	.min_freq = OMAP5430_GPU_MIN_FREQ,
+	.max_freq = OMAP5430_GPU_MAX_FREQ,
+	.max_temp = OMAP5430_GPU_MAX_TEMP,
+	.min_temp = OMAP5430_GPU_MIN_TEMP,
+	.hyst_val = OMAP5430_GPU_HYST_VAL,
+	.update_int1 = 1000,
+	.update_int2 = 2000,
+};
+
+/* Thresholds and limits for OMAP5430 CORE temperature sensor */
+static struct temp_sensor_data omap5430_core_temp_sensor_data = {
+	.tshut_hot = OMAP5430_CORE_TSHUT_HOT,
+	.tshut_cold = OMAP5430_CORE_TSHUT_COLD,
+	.t_hot = OMAP5430_CORE_T_HOT,
+	.t_cold = OMAP5430_CORE_T_COLD,
+	.min_freq = OMAP5430_CORE_MIN_FREQ,
+	.max_freq = OMAP5430_CORE_MAX_FREQ,
+	.max_temp = OMAP5430_CORE_MAX_TEMP,
+	.min_temp = OMAP5430_CORE_MIN_TEMP,
+	.hyst_val = OMAP5430_CORE_HYST_VAL,
+	.update_int1 = 1000,
+	.update_int2 = 2000,
+};
+
+/*
+ * OMAP54xx ES2.0 : Temperature values in milli degree celsius
+ * ADC code values from 540 to 945
+ */
+static int
+omap5430_adc_to_temp[
+	OMAP5430_ADC_END_VALUE - OMAP5430_ADC_START_VALUE + 1] = {
+	/* Index 540 - 549 */
+	-40000, -40000, -40000, -40000, -39800, -39400, -39000, -38600, -38200,
+	-37800,
+	/* Index 550 - 559 */
+	-37400, -37000, -36600, -36200, -35800, -35300, -34700, -34200, -33800,
+	-33400,
+	/* Index 560 - 569 */
+	-33000, -32600, -32200, -31800, -31400, -31000, -30600, -30200, -29800,
+	-29400,
+	/* Index 570 - 579 */
+	-29000, -28600, -28200, -27700, -27100, -26600, -26200, -25800, -25400,
+	-25000,
+	/* Index 580 - 589 */
+	-24600, -24200, -23800, -23400, -23000, -22600, -22200, -21600, -21400,
+	-21000,
+	/* Index 590 - 599 */
+	-20500, -19900, -19400, -19000, -18600, -18200, -17800, -17400, -17000,
+	-16600,
+	/* Index 600 - 609 */
+	-16200, -15800, -15400, -15000, -14600, -14200, -13800,	-13400, -13000,
+	-12500,
+	/* Index 610 - 619 */
+	-11900, -11400, -11000, -10600, -10200, -9800, -9400, -9000, -8600,
+	-8200,
+	/* Index 620 - 629 */
+	-7800, -7400, -7000, -6600, -6200, -5800, -5400, -5000, -4500, -3900,
+	/* Index 630 - 639 */
+	-3400, -3000, -2600, -2200, -1800, -1400, -1000, -600, -200, 200,
+	/* Index 640 - 649 */
+	600, 1000, 1400, 1800, 2200, 2600, 3000, 3400, 3900, 4500,
+	/* Index 650 - 659 */
+	5000, 5400, 5800, 6200, 6600, 7000, 7400, 7800, 8200, 8600,
+	/* Index 660 - 669 */
+	9000, 9400, 9800, 10200, 10600, 11000, 11400, 11800, 12200, 12700,
+	/* Index 670 - 679 */
+	13300, 13800, 14200, 14600, 15000, 15400, 15800, 16200, 16600, 17000,
+	/* Index 680 - 689 */
+	17400, 17800, 18200, 18600, 19000, 19400, 19800, 20200, 20600, 21100,
+	/* Index 690 - 699 */
+	21400, 21900, 22500, 23000, 23400, 23800, 24200, 24600, 25000, 25400,
+	/* Index 700 - 709 */
+	25800, 26200, 26600, 27000, 27400, 27800, 28200, 28600, 29000, 29400,
+	/* Index 710 - 719 */
+	29800, 30200, 30600, 31000, 31400, 31900, 32500, 33000, 33400, 33800,
+	/* Index 720 - 729 */
+	34200, 34600, 35000, 35400, 35800, 36200, 36600, 37000, 37400, 37800,
+	/* Index 730 - 739 */
+	38200, 38600, 39000, 39400, 39800, 40200, 40600, 41000, 41400, 41800,
+	/* Index 740 - 749 */
+	42200, 42600, 43100, 43700, 44200, 44600, 45000, 45400, 45800, 46200,
+	/* Index 750 - 759 */
+	46600, 47000, 47400, 47800, 48200, 48600, 49000, 49400, 49800, 50200,
+	/* Index 760 - 769 */
+	50600, 51000, 51400, 51800, 52200, 52600, 53000, 53400, 53800, 54200,
+	/* Index 770 - 779 */
+	54600, 55000, 55400, 55900, 56500, 57000, 57400, 57800, 58200, 58600,
+	/* Index 780 - 789 */
+	59000, 59400, 59800, 60200, 60600, 61000, 61400, 61800, 62200, 62600,
+	/* Index 790 - 799 */
+	63000, 63400, 63800, 64200, 64600, 65000, 65400, 65800, 66200, 66600,
+	/* Index 800 - 809 */
+	67000, 67400, 67800, 68200, 68600, 69000, 69400, 69800, 70200, 70600,
+	/* Index 810 - 819 */
+	71000, 71500, 72100, 72600, 73000, 73400, 73800, 74200, 74600, 75000,
+	/* Index 820 - 829 */
+	75400, 75800, 76200, 76600, 77000, 77400, 77800, 78200, 78600, 79000,
+	/* Index 830 - 839 */
+	79400, 79800, 80200, 80600, 81000, 81400, 81800, 82200, 82600, 83000,
+	/* Index 840 - 849 */
+	83400, 83800, 84200, 84600, 85000, 85400, 85800, 86200, 86600, 87000,
+	/* Index 850 - 859 */
+	87400, 87800, 88200, 88600, 89000, 89400, 89800, 90200, 90600, 91000,
+	/* Index 860 - 869 */
+	91400, 91800, 92200, 92600, 93000, 93400, 93800, 94200, 94600, 95000,
+	/* Index 870 - 879 */
+	95400, 95800, 96200, 96600, 97000, 97500, 98100, 98600, 99000, 99400,
+	/* Index 880 - 889 */
+	99800, 100200, 100600, 101000, 101400, 101800, 102200, 102600, 103000,
+	103400,
+	/* Index 890 - 899 */
+	103800, 104200, 104600, 105000, 105400, 105800, 106200, 106600, 107000,
+	107400,
+	/* Index 900 - 909 */
+	107800, 108200, 108600, 109000, 109400, 109800, 110200, 110600, 111000,
+	111400,
+	/* Index 910 - 919 */
+	111800, 112200, 112600, 113000, 113400, 113800, 114200, 114600, 115000,
+	115400,
+	/* Index 920 - 929 */
+	115800, 116200, 116600, 117000, 117400, 117800, 118200, 118600, 119000,
+	119400,
+	/* Index 930 - 939 */
+	119800, 120200, 120600, 121000, 121400, 121800, 122400, 122600, 123000,
+	123400,
+	/* Index 940 - 945 */
+	123800, 1242000, 124600, 124900, 125000, 125000,
+};
+
+/* OMAP54xx ES2.0 data */
+const struct ti_bandgap_data omap5430_data = {
+	.features = TI_BANDGAP_FEATURE_TSHUT_CONFIG |
+			TI_BANDGAP_FEATURE_FREEZE_BIT |
+			TI_BANDGAP_FEATURE_TALERT |
+			TI_BANDGAP_FEATURE_COUNTER_DELAY |
+			TI_BANDGAP_FEATURE_HISTORY_BUFFER,
+	.fclock_name = "l3instr_ts_gclk_div",
+	.div_ck_name = "l3instr_ts_gclk_div",
+	.conv_table = omap5430_adc_to_temp,
+	.adc_start_val = OMAP5430_ADC_START_VALUE,
+	.adc_end_val = OMAP5430_ADC_END_VALUE,
+	.expose_sensor = ti_thermal_expose_sensor,
+	.remove_sensor = ti_thermal_remove_sensor,
+	.report_temperature = ti_thermal_report_sensor_temperature,
+	.sensors = {
+		{
+		.registers = &omap5430_mpu_temp_sensor_registers,
+		.ts_data = &omap5430_mpu_temp_sensor_data,
+		.domain = "cpu",
+		.register_cooling = ti_thermal_register_cpu_cooling,
+		.unregister_cooling = ti_thermal_unregister_cpu_cooling,
+		.slope = OMAP_GRADIENT_SLOPE_5430_CPU,
+		.constant = OMAP_GRADIENT_CONST_5430_CPU,
+		.slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU,
+		.constant_pcb = OMAP_GRADIENT_CONST_W_PCB_5430_CPU,
+		},
+		{
+		.registers = &omap5430_gpu_temp_sensor_registers,
+		.ts_data = &omap5430_gpu_temp_sensor_data,
+		.domain = "gpu",
+		.slope = OMAP_GRADIENT_SLOPE_5430_GPU,
+		.constant = OMAP_GRADIENT_CONST_5430_GPU,
+		.slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU,
+		.constant_pcb = OMAP_GRADIENT_CONST_W_PCB_5430_GPU,
+		},
+		{
+		.registers = &omap5430_core_temp_sensor_registers,
+		.ts_data = &omap5430_core_temp_sensor_data,
+		.domain = "core",
+		},
+	},
+	.sensor_count = 3,
+};
diff --git a/drivers/thermal/ti-soc-thermal/omap5xxx-bandgap.h b/drivers/thermal/ti-soc-thermal/omap5xxx-bandgap.h
new file mode 100644
index 000000000000..400b55dffadd
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/omap5xxx-bandgap.h
@@ -0,0 +1,200 @@
+/*
+ * OMAP5xxx bandgap registers, bitfields and temperature definitions
+ *
+ * Copyright (C) 2013 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 __OMAP5XXX_BANDGAP_H
+#define __OMAP5XXX_BANDGAP_H
+
+/**
+ * *** OMAP5430 ***
+ *
+ * Below, in sequence, are the Register definitions,
+ * the bitfields and the temperature definitions for OMAP5430.
+ */
+
+/**
+ * OMAP5430 register definitions
+ *
+ * Registers are defined as offsets. The offsets are
+ * relative to FUSE_OPP_BGAP_GPU on 5430.
+ *
+ * Register below are grouped by domain (not necessarily in offset order)
+ */
+
+/* OMAP5430.GPU register offsets */
+#define OMAP5430_FUSE_OPP_BGAP_GPU			0x0
+#define OMAP5430_TEMP_SENSOR_GPU_OFFSET			0x150
+#define OMAP5430_BGAP_THRESHOLD_GPU_OFFSET		0x1A8
+#define OMAP5430_BGAP_TSHUT_GPU_OFFSET			0x1B4
+#define OMAP5430_BGAP_CUMUL_DTEMP_GPU_OFFSET		0x1C0
+#define OMAP5430_BGAP_DTEMP_GPU_0_OFFSET		0x1F4
+#define OMAP5430_BGAP_DTEMP_GPU_1_OFFSET		0x1F8
+#define OMAP5430_BGAP_DTEMP_GPU_2_OFFSET		0x1FC
+#define OMAP5430_BGAP_DTEMP_GPU_3_OFFSET		0x200
+#define OMAP5430_BGAP_DTEMP_GPU_4_OFFSET		0x204
+
+/* OMAP5430.MPU register offsets */
+#define OMAP5430_FUSE_OPP_BGAP_MPU			0x4
+#define OMAP5430_TEMP_SENSOR_MPU_OFFSET			0x14C
+#define OMAP5430_BGAP_THRESHOLD_MPU_OFFSET		0x1A4
+#define OMAP5430_BGAP_TSHUT_MPU_OFFSET			0x1B0
+#define OMAP5430_BGAP_CUMUL_DTEMP_MPU_OFFSET		0x1BC
+#define OMAP5430_BGAP_DTEMP_MPU_0_OFFSET		0x1E0
+#define OMAP5430_BGAP_DTEMP_MPU_1_OFFSET		0x1E4
+#define OMAP5430_BGAP_DTEMP_MPU_2_OFFSET		0x1E8
+#define OMAP5430_BGAP_DTEMP_MPU_3_OFFSET		0x1EC
+#define OMAP5430_BGAP_DTEMP_MPU_4_OFFSET		0x1F0
+
+/* OMAP5430.MPU register offsets */
+#define OMAP5430_FUSE_OPP_BGAP_CORE			0x8
+#define OMAP5430_TEMP_SENSOR_CORE_OFFSET		0x154
+#define OMAP5430_BGAP_THRESHOLD_CORE_OFFSET		0x1AC
+#define OMAP5430_BGAP_TSHUT_CORE_OFFSET			0x1B8
+#define OMAP5430_BGAP_CUMUL_DTEMP_CORE_OFFSET		0x1C4
+#define OMAP5430_BGAP_DTEMP_CORE_0_OFFSET		0x208
+#define OMAP5430_BGAP_DTEMP_CORE_1_OFFSET		0x20C
+#define OMAP5430_BGAP_DTEMP_CORE_2_OFFSET		0x210
+#define OMAP5430_BGAP_DTEMP_CORE_3_OFFSET		0x214
+#define OMAP5430_BGAP_DTEMP_CORE_4_OFFSET		0x218
+
+/* OMAP5430.common register offsets */
+#define OMAP5430_BGAP_CTRL_OFFSET			0x1A0
+#define OMAP5430_BGAP_STATUS_OFFSET			0x1C8
+
+/**
+ * Register bitfields for OMAP5430
+ *
+ * All the macros bellow define the required bits for
+ * controlling temperature on OMAP5430. Bit defines are
+ * grouped by register.
+ */
+
+/* OMAP5430.TEMP_SENSOR */
+#define OMAP5430_BGAP_TEMP_SENSOR_SOC_MASK		BIT(12)
+#define OMAP5430_BGAP_TEMPSOFF_MASK			BIT(11)
+#define OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK		BIT(10)
+#define OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK		(0x3ff << 0)
+
+/* OMAP5430.BANDGAP_CTRL */
+#define OMAP5430_MASK_SIDLEMODE_MASK			(0x3 << 30)
+#define OMAP5430_MASK_COUNTER_DELAY_MASK		(0x7 << 27)
+#define OMAP5430_MASK_FREEZE_CORE_MASK			BIT(23)
+#define OMAP5430_MASK_FREEZE_GPU_MASK			BIT(22)
+#define OMAP5430_MASK_FREEZE_MPU_MASK			BIT(21)
+#define OMAP5430_MASK_CLEAR_CORE_MASK			BIT(20)
+#define OMAP5430_MASK_CLEAR_GPU_MASK			BIT(19)
+#define OMAP5430_MASK_CLEAR_MPU_MASK			BIT(18)
+#define OMAP5430_MASK_CLEAR_ACCUM_CORE_MASK		BIT(17)
+#define OMAP5430_MASK_CLEAR_ACCUM_GPU_MASK		BIT(16)
+#define OMAP5430_MASK_CLEAR_ACCUM_MPU_MASK		BIT(15)
+#define OMAP5430_MASK_HOT_CORE_MASK			BIT(5)
+#define OMAP5430_MASK_COLD_CORE_MASK			BIT(4)
+#define OMAP5430_MASK_HOT_GPU_MASK			BIT(3)
+#define OMAP5430_MASK_COLD_GPU_MASK			BIT(2)
+#define OMAP5430_MASK_HOT_MPU_MASK			BIT(1)
+#define OMAP5430_MASK_COLD_MPU_MASK			BIT(0)
+
+/* OMAP5430.BANDGAP_COUNTER */
+#define OMAP5430_COUNTER_MASK				(0xffffff << 0)
+
+/* OMAP5430.BANDGAP_THRESHOLD */
+#define OMAP5430_T_HOT_MASK				(0x3ff << 16)
+#define OMAP5430_T_COLD_MASK				(0x3ff << 0)
+
+/* OMAP5430.TSHUT_THRESHOLD */
+#define OMAP5430_TSHUT_HOT_MASK				(0x3ff << 16)
+#define OMAP5430_TSHUT_COLD_MASK			(0x3ff << 0)
+
+/* OMAP5430.BANDGAP_CUMUL_DTEMP_MPU */
+#define OMAP5430_CUMUL_DTEMP_MPU_MASK			(0xffffffff << 0)
+
+/* OMAP5430.BANDGAP_CUMUL_DTEMP_GPU */
+#define OMAP5430_CUMUL_DTEMP_GPU_MASK			(0xffffffff << 0)
+
+/* OMAP5430.BANDGAP_CUMUL_DTEMP_CORE */
+#define OMAP5430_CUMUL_DTEMP_CORE_MASK			(0xffffffff << 0)
+
+/* OMAP5430.BANDGAP_STATUS */
+#define OMAP5430_BGAP_ALERT_MASK			BIT(31)
+#define OMAP5430_HOT_CORE_FLAG_MASK			BIT(5)
+#define OMAP5430_COLD_CORE_FLAG_MASK			BIT(4)
+#define OMAP5430_HOT_GPU_FLAG_MASK			BIT(3)
+#define OMAP5430_COLD_GPU_FLAG_MASK			BIT(2)
+#define OMAP5430_HOT_MPU_FLAG_MASK			BIT(1)
+#define OMAP5430_COLD_MPU_FLAG_MASK			BIT(0)
+
+/**
+ * Temperature limits and thresholds for OMAP5430
+ *
+ * All the macros bellow are definitions for handling the
+ * ADC conversions and representation of temperature limits
+ * and thresholds for OMAP5430. Definitions are grouped
+ * by temperature domain.
+ */
+
+/* OMAP5430.common temperature definitions */
+/* ADC conversion table limits */
+#define OMAP5430_ADC_START_VALUE			540
+#define OMAP5430_ADC_END_VALUE				945
+
+/* OMAP5430.GPU temperature definitions */
+/* bandgap clock limits */
+#define OMAP5430_GPU_MAX_FREQ				1500000
+#define OMAP5430_GPU_MIN_FREQ				1000000
+/* sensor limits */
+#define OMAP5430_GPU_MIN_TEMP				-40000
+#define OMAP5430_GPU_MAX_TEMP				125000
+#define OMAP5430_GPU_HYST_VAL				5000
+/* interrupts thresholds */
+#define OMAP5430_GPU_TSHUT_HOT				915
+#define OMAP5430_GPU_TSHUT_COLD				900
+#define OMAP5430_GPU_T_HOT				800
+#define OMAP5430_GPU_T_COLD				795
+
+/* OMAP5430.MPU temperature definitions */
+/* bandgap clock limits */
+#define OMAP5430_MPU_MAX_FREQ				1500000
+#define OMAP5430_MPU_MIN_FREQ				1000000
+/* sensor limits */
+#define OMAP5430_MPU_MIN_TEMP				-40000
+#define OMAP5430_MPU_MAX_TEMP				125000
+#define OMAP5430_MPU_HYST_VAL				5000
+/* interrupts thresholds */
+#define OMAP5430_MPU_TSHUT_HOT				915
+#define OMAP5430_MPU_TSHUT_COLD				900
+#define OMAP5430_MPU_T_HOT				800
+#define OMAP5430_MPU_T_COLD				795
+
+/* OMAP5430.CORE temperature definitions */
+/* bandgap clock limits */
+#define OMAP5430_CORE_MAX_FREQ				1500000
+#define OMAP5430_CORE_MIN_FREQ				1000000
+/* sensor limits */
+#define OMAP5430_CORE_MIN_TEMP				-40000
+#define OMAP5430_CORE_MAX_TEMP				125000
+#define OMAP5430_CORE_HYST_VAL				5000
+/* interrupts thresholds */
+#define OMAP5430_CORE_TSHUT_HOT				915
+#define OMAP5430_CORE_TSHUT_COLD			900
+#define OMAP5430_CORE_T_HOT				800
+#define OMAP5430_CORE_T_COLD				795
+
+#endif /* __OMAP5XXX_BANDGAP_H */
diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
new file mode 100644
index 000000000000..f20c1cfe9800
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
@@ -0,0 +1,1546 @@
+/*
+ * TI Bandgap temperature sensor driver
+ *
+ * Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.ti.com/
+ * Author: J Keerthy <j-keerthy@ti.com>
+ * Author: Moiz Sonasath <m-sonasath@ti.com>
+ * Couple of fixes, DT and MFD adaptation:
+ *   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
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/clk.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/reboot.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/of_irq.h>
+#include <linux/io.h>
+
+#include "ti-bandgap.h"
+
+/***   Helper functions to access registers and their bitfields   ***/
+
+/**
+ * ti_bandgap_readl() - simple read helper function
+ * @bgp: pointer to ti_bandgap structure
+ * @reg: desired register (offset) to be read
+ *
+ * Helper function to read bandgap registers. It uses the io remapped area.
+ * Return: the register value.
+ */
+static u32 ti_bandgap_readl(struct ti_bandgap *bgp, u32 reg)
+{
+	return readl(bgp->base + reg);
+}
+
+/**
+ * ti_bandgap_writel() - simple write helper function
+ * @bgp: pointer to ti_bandgap structure
+ * @val: desired register value to be written
+ * @reg: desired register (offset) to be written
+ *
+ * Helper function to write bandgap registers. It uses the io remapped area.
+ */
+static void ti_bandgap_writel(struct ti_bandgap *bgp, u32 val, u32 reg)
+{
+	writel(val, bgp->base + reg);
+}
+
+/**
+ * DOC: macro to update bits.
+ *
+ * RMW_BITS() - used to read, modify and update bandgap bitfields.
+ *            The value passed will be shifted.
+ */
+#define RMW_BITS(bgp, id, reg, mask, val)			\
+do {								\
+	struct temp_sensor_registers *t;			\
+	u32 r;							\
+								\
+	t = bgp->conf->sensors[(id)].registers;		\
+	r = ti_bandgap_readl(bgp, t->reg);			\
+	r &= ~t->mask;						\
+	r |= (val) << __ffs(t->mask);				\
+	ti_bandgap_writel(bgp, r, t->reg);			\
+} while (0)
+
+/***   Basic helper functions   ***/
+
+/**
+ * ti_bandgap_power() - controls the power state of a bandgap device
+ * @bgp: pointer to ti_bandgap structure
+ * @on: desired power state (1 - on, 0 - off)
+ *
+ * Used to power on/off a bandgap device instance. Only used on those
+ * that features tempsoff bit.
+ *
+ * Return: 0 on success, -ENOTSUPP if tempsoff is not supported.
+ */
+static int ti_bandgap_power(struct ti_bandgap *bgp, bool on)
+{
+	int i, ret = 0;
+
+	if (!TI_BANDGAP_HAS(bgp, POWER_SWITCH)) {
+		ret = -ENOTSUPP;
+		goto exit;
+	}
+
+	for (i = 0; i < bgp->conf->sensor_count; i++)
+		/* active on 0 */
+		RMW_BITS(bgp, i, temp_sensor_ctrl, bgap_tempsoff_mask, !on);
+
+exit:
+	return ret;
+}
+
+/**
+ * ti_bandgap_read_temp() - helper function to read sensor temperature
+ * @bgp: pointer to ti_bandgap structure
+ * @id: bandgap sensor id
+ *
+ * Function to concentrate the steps to read sensor temperature register.
+ * This function is desired because, depending on bandgap device version,
+ * it might be needed to freeze the bandgap state machine, before fetching
+ * the register value.
+ *
+ * Return: temperature in ADC values.
+ */
+static u32 ti_bandgap_read_temp(struct ti_bandgap *bgp, int id)
+{
+	struct temp_sensor_registers *tsr;
+	u32 temp, reg;
+
+	tsr = bgp->conf->sensors[id].registers;
+	reg = tsr->temp_sensor_ctrl;
+
+	if (TI_BANDGAP_HAS(bgp, FREEZE_BIT)) {
+		RMW_BITS(bgp, id, bgap_mask_ctrl, mask_freeze_mask, 1);
+		/*
+		 * In case we cannot read from cur_dtemp / dtemp_0,
+		 * then we read from the last valid temp read
+		 */
+		reg = tsr->ctrl_dtemp_1;
+	}
+
+	/* read temperature */
+	temp = ti_bandgap_readl(bgp, reg);
+	temp &= tsr->bgap_dtemp_mask;
+
+	if (TI_BANDGAP_HAS(bgp, FREEZE_BIT))
+		RMW_BITS(bgp, id, bgap_mask_ctrl, mask_freeze_mask, 0);
+
+	return temp;
+}
+
+/***   IRQ handlers   ***/
+
+/**
+ * ti_bandgap_talert_irq_handler() - handles Temperature alert IRQs
+ * @irq: IRQ number
+ * @data: private data (struct ti_bandgap *)
+ *
+ * This is the Talert handler. Use it only if bandgap device features
+ * HAS(TALERT). This handler goes over all sensors and checks their
+ * conditions and acts accordingly. In case there are events pending,
+ * it will reset the event mask to wait for the opposite event (next event).
+ * Every time there is a new event, it will be reported to thermal layer.
+ *
+ * Return: IRQ_HANDLED
+ */
+static irqreturn_t ti_bandgap_talert_irq_handler(int irq, void *data)
+{
+	struct ti_bandgap *bgp = data;
+	struct temp_sensor_registers *tsr;
+	u32 t_hot = 0, t_cold = 0, ctrl;
+	int i;
+
+	spin_lock(&bgp->lock);
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		tsr = bgp->conf->sensors[i].registers;
+		ctrl = ti_bandgap_readl(bgp, tsr->bgap_status);
+
+		/* Read the status of t_hot */
+		t_hot = ctrl & tsr->status_hot_mask;
+
+		/* Read the status of t_cold */
+		t_cold = ctrl & tsr->status_cold_mask;
+
+		if (!t_cold && !t_hot)
+			continue;
+
+		ctrl = ti_bandgap_readl(bgp, tsr->bgap_mask_ctrl);
+		/*
+		 * One TALERT interrupt: Two sources
+		 * If the interrupt is due to t_hot then mask t_hot and
+		 * and unmask t_cold else mask t_cold and unmask t_hot
+		 */
+		if (t_hot) {
+			ctrl &= ~tsr->mask_hot_mask;
+			ctrl |= tsr->mask_cold_mask;
+		} else if (t_cold) {
+			ctrl &= ~tsr->mask_cold_mask;
+			ctrl |= tsr->mask_hot_mask;
+		}
+
+		ti_bandgap_writel(bgp, ctrl, tsr->bgap_mask_ctrl);
+
+		dev_dbg(bgp->dev,
+			"%s: IRQ from %s sensor: hotevent %d coldevent %d\n",
+			__func__, bgp->conf->sensors[i].domain,
+			t_hot, t_cold);
+
+		/* report temperature to whom may concern */
+		if (bgp->conf->report_temperature)
+			bgp->conf->report_temperature(bgp, i);
+	}
+	spin_unlock(&bgp->lock);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * ti_bandgap_tshut_irq_handler() - handles Temperature shutdown signal
+ * @irq: IRQ number
+ * @data: private data (unused)
+ *
+ * This is the Tshut handler. Use it only if bandgap device features
+ * HAS(TSHUT). If any sensor fires the Tshut signal, we simply shutdown
+ * the system.
+ *
+ * Return: IRQ_HANDLED
+ */
+static irqreturn_t ti_bandgap_tshut_irq_handler(int irq, void *data)
+{
+	pr_emerg("%s: TSHUT temperature reached. Needs shut down...\n",
+		 __func__);
+
+	orderly_poweroff(true);
+
+	return IRQ_HANDLED;
+}
+
+/***   Helper functions which manipulate conversion ADC <-> mi Celsius   ***/
+
+/**
+ * ti_bandgap_adc_to_mcelsius() - converts an ADC value to mCelsius scale
+ * @bgp: struct ti_bandgap pointer
+ * @adc_val: value in ADC representation
+ * @t: address where to write the resulting temperature in mCelsius
+ *
+ * Simple conversion from ADC representation to mCelsius. In case the ADC value
+ * is out of the ADC conv table range, it returns -ERANGE, 0 on success.
+ * The conversion table is indexed by the ADC values.
+ *
+ * Return: 0 if conversion was successful, else -ERANGE in case the @adc_val
+ * argument is out of the ADC conv table range.
+ */
+static
+int ti_bandgap_adc_to_mcelsius(struct ti_bandgap *bgp, int adc_val, int *t)
+{
+	const struct ti_bandgap_data *conf = bgp->conf;
+	int ret = 0;
+
+	/* look up for temperature in the table and return the temperature */
+	if (adc_val < conf->adc_start_val || adc_val > conf->adc_end_val) {
+		ret = -ERANGE;
+		goto exit;
+	}
+
+	*t = bgp->conf->conv_table[adc_val - conf->adc_start_val];
+
+exit:
+	return ret;
+}
+
+/**
+ * ti_bandgap_mcelsius_to_adc() - converts a mCelsius value to ADC scale
+ * @bgp: struct ti_bandgap pointer
+ * @temp: value in mCelsius
+ * @adc: address where to write the resulting temperature in ADC representation
+ *
+ * Simple conversion from mCelsius to ADC values. In case the temp value
+ * is out of the ADC conv table range, it returns -ERANGE, 0 on success.
+ * The conversion table is indexed by the ADC values.
+ *
+ * Return: 0 if conversion was successful, else -ERANGE in case the @temp
+ * argument is out of the ADC conv table range.
+ */
+static
+int ti_bandgap_mcelsius_to_adc(struct ti_bandgap *bgp, long temp, int *adc)
+{
+	const struct ti_bandgap_data *conf = bgp->conf;
+	const int *conv_table = bgp->conf->conv_table;
+	int high, low, mid, ret = 0;
+
+	low = 0;
+	high = conf->adc_end_val - conf->adc_start_val;
+	mid = (high + low) / 2;
+
+	if (temp < conv_table[low] || temp > conv_table[high]) {
+		ret = -ERANGE;
+		goto exit;
+	}
+
+	while (low < high) {
+		if (temp < conv_table[mid])
+			high = mid - 1;
+		else
+			low = mid + 1;
+		mid = (low + high) / 2;
+	}
+
+	*adc = conf->adc_start_val + low;
+
+exit:
+	return ret;
+}
+
+/**
+ * ti_bandgap_add_hyst() - add hysteresis (in mCelsius) to an ADC value
+ * @bgp: struct ti_bandgap pointer
+ * @adc_val: temperature value in ADC representation
+ * @hyst_val: hysteresis value in mCelsius
+ * @sum: address where to write the resulting temperature (in ADC scale)
+ *
+ * Adds an hysteresis value (in mCelsius) to a ADC temperature value.
+ *
+ * Return: 0 on success, -ERANGE otherwise.
+ */
+static
+int ti_bandgap_add_hyst(struct ti_bandgap *bgp, int adc_val, int hyst_val,
+			u32 *sum)
+{
+	int temp, ret;
+
+	/*
+	 * Need to add in the mcelsius domain, so we have a temperature
+	 * the conv_table range
+	 */
+	ret = ti_bandgap_adc_to_mcelsius(bgp, adc_val, &temp);
+	if (ret < 0)
+		goto exit;
+
+	temp += hyst_val;
+
+	ret = ti_bandgap_mcelsius_to_adc(bgp, temp, sum);
+
+exit:
+	return ret;
+}
+
+/***   Helper functions handling device Alert/Shutdown signals   ***/
+
+/**
+ * ti_bandgap_unmask_interrupts() - unmasks the events of thot & tcold
+ * @bgp: struct ti_bandgap pointer
+ * @id: bandgap sensor id
+ * @t_hot: hot temperature value to trigger alert signal
+ * @t_cold: cold temperature value to trigger alert signal
+ *
+ * Checks the requested t_hot and t_cold values and configures the IRQ event
+ * masks accordingly. Call this function only if bandgap features HAS(TALERT).
+ */
+static void ti_bandgap_unmask_interrupts(struct ti_bandgap *bgp, int id,
+					 u32 t_hot, u32 t_cold)
+{
+	struct temp_sensor_registers *tsr;
+	u32 temp, reg_val;
+
+	/* Read the current on die temperature */
+	temp = ti_bandgap_read_temp(bgp, id);
+
+	tsr = bgp->conf->sensors[id].registers;
+	reg_val = ti_bandgap_readl(bgp, tsr->bgap_mask_ctrl);
+
+	if (temp < t_hot)
+		reg_val |= tsr->mask_hot_mask;
+	else
+		reg_val &= ~tsr->mask_hot_mask;
+
+	if (t_cold < temp)
+		reg_val |= tsr->mask_cold_mask;
+	else
+		reg_val &= ~tsr->mask_cold_mask;
+	ti_bandgap_writel(bgp, reg_val, tsr->bgap_mask_ctrl);
+}
+
+/**
+ * ti_bandgap_update_alert_threshold() - sequence to update thresholds
+ * @bgp: struct ti_bandgap pointer
+ * @id: bandgap sensor id
+ * @val: value (ADC) of a new threshold
+ * @hot: desired threshold to be updated. true if threshold hot, false if
+ *       threshold cold
+ *
+ * It will program the required thresholds (hot and cold) for TALERT signal.
+ * This function can be used to update t_hot or t_cold, depending on @hot value.
+ * It checks the resulting t_hot and t_cold values, based on the new passed @val
+ * and configures the thresholds so that t_hot is always greater than t_cold.
+ * Call this function only if bandgap features HAS(TALERT).
+ *
+ * Return: 0 if no error, else corresponding error
+ */
+static int ti_bandgap_update_alert_threshold(struct ti_bandgap *bgp, int id,
+					     int val, bool hot)
+{
+	struct temp_sensor_data *ts_data = bgp->conf->sensors[id].ts_data;
+	struct temp_sensor_registers *tsr;
+	u32 thresh_val, reg_val, t_hot, t_cold;
+	int err = 0;
+
+	tsr = bgp->conf->sensors[id].registers;
+
+	/* obtain the current value */
+	thresh_val = ti_bandgap_readl(bgp, tsr->bgap_threshold);
+	t_cold = (thresh_val & tsr->threshold_tcold_mask) >>
+		__ffs(tsr->threshold_tcold_mask);
+	t_hot = (thresh_val & tsr->threshold_thot_mask) >>
+		__ffs(tsr->threshold_thot_mask);
+	if (hot)
+		t_hot = val;
+	else
+		t_cold = val;
+
+	if (t_cold > t_hot) {
+		if (hot)
+			err = ti_bandgap_add_hyst(bgp, t_hot,
+						  -ts_data->hyst_val,
+						  &t_cold);
+		else
+			err = ti_bandgap_add_hyst(bgp, t_cold,
+						  ts_data->hyst_val,
+						  &t_hot);
+	}
+
+	/* write the new threshold values */
+	reg_val = thresh_val &
+		  ~(tsr->threshold_thot_mask | tsr->threshold_tcold_mask);
+	reg_val |= (t_hot << __ffs(tsr->threshold_thot_mask)) |
+		   (t_cold << __ffs(tsr->threshold_tcold_mask));
+	ti_bandgap_writel(bgp, reg_val, tsr->bgap_threshold);
+
+	if (err) {
+		dev_err(bgp->dev, "failed to reprogram thot threshold\n");
+		err = -EIO;
+		goto exit;
+	}
+
+	ti_bandgap_unmask_interrupts(bgp, id, t_hot, t_cold);
+exit:
+	return err;
+}
+
+/**
+ * ti_bandgap_validate() - helper to check the sanity of a struct ti_bandgap
+ * @bgp: struct ti_bandgap pointer
+ * @id: bandgap sensor id
+ *
+ * Checks if the bandgap pointer is valid and if the sensor id is also
+ * applicable.
+ *
+ * Return: 0 if no errors, -EINVAL for invalid @bgp pointer or -ERANGE if
+ * @id cannot index @bgp sensors.
+ */
+static inline int ti_bandgap_validate(struct ti_bandgap *bgp, int id)
+{
+	int ret = 0;
+
+	if (IS_ERR_OR_NULL(bgp)) {
+		pr_err("%s: invalid bandgap pointer\n", __func__);
+		ret = -EINVAL;
+		goto exit;
+	}
+
+	if ((id < 0) || (id >= bgp->conf->sensor_count)) {
+		dev_err(bgp->dev, "%s: sensor id out of range (%d)\n",
+			__func__, id);
+		ret = -ERANGE;
+	}
+
+exit:
+	return ret;
+}
+
+/**
+ * _ti_bandgap_write_threshold() - helper to update TALERT t_cold or t_hot
+ * @bgp: struct ti_bandgap pointer
+ * @id: bandgap sensor id
+ * @val: value (mCelsius) of a new threshold
+ * @hot: desired threshold to be updated. true if threshold hot, false if
+ *       threshold cold
+ *
+ * It will update the required thresholds (hot and cold) for TALERT signal.
+ * This function can be used to update t_hot or t_cold, depending on @hot value.
+ * Validates the mCelsius range and update the requested threshold.
+ * Call this function only if bandgap features HAS(TALERT).
+ *
+ * Return: 0 if no error, else corresponding error value.
+ */
+static int _ti_bandgap_write_threshold(struct ti_bandgap *bgp, int id, int val,
+				       bool hot)
+{
+	struct temp_sensor_data *ts_data;
+	struct temp_sensor_registers *tsr;
+	u32 adc_val;
+	int ret;
+
+	ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		goto exit;
+
+	if (!TI_BANDGAP_HAS(bgp, TALERT)) {
+		ret = -ENOTSUPP;
+		goto exit;
+	}
+
+	ts_data = bgp->conf->sensors[id].ts_data;
+	tsr = bgp->conf->sensors[id].registers;
+	if (hot) {
+		if (val < ts_data->min_temp + ts_data->hyst_val)
+			ret = -EINVAL;
+	} else {
+		if (val > ts_data->max_temp + ts_data->hyst_val)
+			ret = -EINVAL;
+	}
+
+	if (ret)
+		goto exit;
+
+	ret = ti_bandgap_mcelsius_to_adc(bgp, val, &adc_val);
+	if (ret < 0)
+		goto exit;
+
+	spin_lock(&bgp->lock);
+	ret = ti_bandgap_update_alert_threshold(bgp, id, adc_val, hot);
+	spin_unlock(&bgp->lock);
+
+exit:
+	return ret;
+}
+
+/**
+ * _ti_bandgap_read_threshold() - helper to read TALERT t_cold or t_hot
+ * @bgp: struct ti_bandgap pointer
+ * @id: bandgap sensor id
+ * @val: value (mCelsius) of a threshold
+ * @hot: desired threshold to be read. true if threshold hot, false if
+ *       threshold cold
+ *
+ * It will fetch the required thresholds (hot and cold) for TALERT signal.
+ * This function can be used to read t_hot or t_cold, depending on @hot value.
+ * Call this function only if bandgap features HAS(TALERT).
+ *
+ * Return: 0 if no error, -ENOTSUPP if it has no TALERT support, or the
+ * corresponding error value if some operation fails.
+ */
+static int _ti_bandgap_read_threshold(struct ti_bandgap *bgp, int id,
+				      int *val, bool hot)
+{
+	struct temp_sensor_registers *tsr;
+	u32 temp, mask;
+	int ret = 0;
+
+	ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		goto exit;
+
+	if (!TI_BANDGAP_HAS(bgp, TALERT)) {
+		ret = -ENOTSUPP;
+		goto exit;
+	}
+
+	tsr = bgp->conf->sensors[id].registers;
+	if (hot)
+		mask = tsr->threshold_thot_mask;
+	else
+		mask = tsr->threshold_tcold_mask;
+
+	temp = ti_bandgap_readl(bgp, tsr->bgap_threshold);
+	temp = (temp & mask) >> __ffs(mask);
+	ret |= ti_bandgap_adc_to_mcelsius(bgp, temp, &temp);
+	if (ret) {
+		dev_err(bgp->dev, "failed to read thot\n");
+		ret = -EIO;
+		goto exit;
+	}
+
+	*val = temp;
+
+exit:
+	return ret;
+}
+
+/***   Exposed APIs   ***/
+
+/**
+ * ti_bandgap_read_thot() - reads sensor current thot
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @thot: resulting current thot value
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_read_thot(struct ti_bandgap *bgp, int id, int *thot)
+{
+	return _ti_bandgap_read_threshold(bgp, id, thot, true);
+}
+
+/**
+ * ti_bandgap_write_thot() - sets sensor current thot
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @val: desired thot value
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_write_thot(struct ti_bandgap *bgp, int id, int val)
+{
+	return _ti_bandgap_write_threshold(bgp, id, val, true);
+}
+
+/**
+ * ti_bandgap_read_tcold() - reads sensor current tcold
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @tcold: resulting current tcold value
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_read_tcold(struct ti_bandgap *bgp, int id, int *tcold)
+{
+	return _ti_bandgap_read_threshold(bgp, id, tcold, false);
+}
+
+/**
+ * ti_bandgap_write_tcold() - sets the sensor tcold
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @val: desired tcold value
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_write_tcold(struct ti_bandgap *bgp, int id, int val)
+{
+	return _ti_bandgap_write_threshold(bgp, id, val, false);
+}
+
+/**
+ * ti_bandgap_read_counter() - read the sensor counter
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: resulting update interval in miliseconds
+ */
+static void ti_bandgap_read_counter(struct ti_bandgap *bgp, int id,
+				    int *interval)
+{
+	struct temp_sensor_registers *tsr;
+	int time;
+
+	tsr = bgp->conf->sensors[id].registers;
+	time = ti_bandgap_readl(bgp, tsr->bgap_counter);
+	time = (time & tsr->counter_mask) >>
+					__ffs(tsr->counter_mask);
+	time = time * 1000 / bgp->clk_rate;
+	*interval = time;
+}
+
+/**
+ * ti_bandgap_read_counter_delay() - read the sensor counter delay
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: resulting update interval in miliseconds
+ */
+static void ti_bandgap_read_counter_delay(struct ti_bandgap *bgp, int id,
+					  int *interval)
+{
+	struct temp_sensor_registers *tsr;
+	int reg_val;
+
+	tsr = bgp->conf->sensors[id].registers;
+
+	reg_val = ti_bandgap_readl(bgp, tsr->bgap_mask_ctrl);
+	reg_val = (reg_val & tsr->mask_counter_delay_mask) >>
+				__ffs(tsr->mask_counter_delay_mask);
+	switch (reg_val) {
+	case 0:
+		*interval = 0;
+		break;
+	case 1:
+		*interval = 1;
+		break;
+	case 2:
+		*interval = 10;
+		break;
+	case 3:
+		*interval = 100;
+		break;
+	case 4:
+		*interval = 250;
+		break;
+	case 5:
+		*interval = 500;
+		break;
+	default:
+		dev_warn(bgp->dev, "Wrong counter delay value read from register %X",
+			 reg_val);
+	}
+}
+
+/**
+ * ti_bandgap_read_update_interval() - read the sensor update interval
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: resulting update interval in miliseconds
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_read_update_interval(struct ti_bandgap *bgp, int id,
+				    int *interval)
+{
+	int ret = 0;
+
+	ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		goto exit;
+
+	if (!TI_BANDGAP_HAS(bgp, COUNTER) &&
+	    !TI_BANDGAP_HAS(bgp, COUNTER_DELAY)) {
+		ret = -ENOTSUPP;
+		goto exit;
+	}
+
+	if (TI_BANDGAP_HAS(bgp, COUNTER)) {
+		ti_bandgap_read_counter(bgp, id, interval);
+		goto exit;
+	}
+
+	ti_bandgap_read_counter_delay(bgp, id, interval);
+exit:
+	return ret;
+}
+
+/**
+ * ti_bandgap_write_counter_delay() - set the counter_delay
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: desired update interval in miliseconds
+ *
+ * Return: 0 on success or the proper error code
+ */
+static int ti_bandgap_write_counter_delay(struct ti_bandgap *bgp, int id,
+					  u32 interval)
+{
+	int rval;
+
+	switch (interval) {
+	case 0: /* Immediate conversion */
+		rval = 0x0;
+		break;
+	case 1: /* Conversion after ever 1ms */
+		rval = 0x1;
+		break;
+	case 10: /* Conversion after ever 10ms */
+		rval = 0x2;
+		break;
+	case 100: /* Conversion after ever 100ms */
+		rval = 0x3;
+		break;
+	case 250: /* Conversion after ever 250ms */
+		rval = 0x4;
+		break;
+	case 500: /* Conversion after ever 500ms */
+		rval = 0x5;
+		break;
+	default:
+		dev_warn(bgp->dev, "Delay %d ms is not supported\n", interval);
+		return -EINVAL;
+	}
+
+	spin_lock(&bgp->lock);
+	RMW_BITS(bgp, id, bgap_mask_ctrl, mask_counter_delay_mask, rval);
+	spin_unlock(&bgp->lock);
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_write_counter() - set the bandgap sensor counter
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: desired update interval in miliseconds
+ */
+static void ti_bandgap_write_counter(struct ti_bandgap *bgp, int id,
+				     u32 interval)
+{
+	interval = interval * bgp->clk_rate / 1000;
+	spin_lock(&bgp->lock);
+	RMW_BITS(bgp, id, bgap_counter, counter_mask, interval);
+	spin_unlock(&bgp->lock);
+}
+
+/**
+ * ti_bandgap_write_update_interval() - set the update interval
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: desired update interval in miliseconds
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_write_update_interval(struct ti_bandgap *bgp,
+				     int id, u32 interval)
+{
+	int ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		goto exit;
+
+	if (!TI_BANDGAP_HAS(bgp, COUNTER) &&
+	    !TI_BANDGAP_HAS(bgp, COUNTER_DELAY)) {
+		ret = -ENOTSUPP;
+		goto exit;
+	}
+
+	if (TI_BANDGAP_HAS(bgp, COUNTER)) {
+		ti_bandgap_write_counter(bgp, id, interval);
+		goto exit;
+	}
+
+	ret = ti_bandgap_write_counter_delay(bgp, id, interval);
+exit:
+	return ret;
+}
+
+/**
+ * ti_bandgap_read_temperature() - report current temperature
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @temperature: resulting temperature
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_read_temperature(struct ti_bandgap *bgp, int id,
+				int *temperature)
+{
+	u32 temp;
+	int ret;
+
+	ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		return ret;
+
+	spin_lock(&bgp->lock);
+	temp = ti_bandgap_read_temp(bgp, id);
+	spin_unlock(&bgp->lock);
+
+	ret |= ti_bandgap_adc_to_mcelsius(bgp, temp, &temp);
+	if (ret)
+		return -EIO;
+
+	*temperature = temp;
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_set_sensor_data() - helper function to store thermal
+ * framework related data.
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @data: thermal framework related data to be stored
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_set_sensor_data(struct ti_bandgap *bgp, int id, void *data)
+{
+	int ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		return ret;
+
+	bgp->regval[id].data = data;
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_get_sensor_data() - helper function to get thermal
+ * framework related data.
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ *
+ * Return: data stored by set function with sensor id on success or NULL
+ */
+void *ti_bandgap_get_sensor_data(struct ti_bandgap *bgp, int id)
+{
+	int ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return bgp->regval[id].data;
+}
+
+/***   Helper functions used during device initialization   ***/
+
+/**
+ * ti_bandgap_force_single_read() - executes 1 single ADC conversion
+ * @bgp: pointer to struct ti_bandgap
+ * @id: sensor id which it is desired to read 1 temperature
+ *
+ * Used to initialize the conversion state machine and set it to a valid
+ * state. Called during device initialization and context restore events.
+ *
+ * Return: 0
+ */
+static int
+ti_bandgap_force_single_read(struct ti_bandgap *bgp, int id)
+{
+	u32 temp = 0, counter = 1000;
+
+	/* Select single conversion mode */
+	if (TI_BANDGAP_HAS(bgp, MODE_CONFIG))
+		RMW_BITS(bgp, id, bgap_mode_ctrl, mode_ctrl_mask, 0);
+
+	/* Start of Conversion = 1 */
+	RMW_BITS(bgp, id, temp_sensor_ctrl, bgap_soc_mask, 1);
+	/* Wait until DTEMP is updated */
+	temp = ti_bandgap_read_temp(bgp, id);
+
+	while ((temp == 0) && --counter)
+		temp = ti_bandgap_read_temp(bgp, id);
+	/* REVISIT: Check correct condition for end of conversion */
+
+	/* Start of Conversion = 0 */
+	RMW_BITS(bgp, id, temp_sensor_ctrl, bgap_soc_mask, 0);
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_set_continous_mode() - One time enabling of continuous mode
+ * @bgp: pointer to struct ti_bandgap
+ *
+ * Call this function only if HAS(MODE_CONFIG) is set. As this driver may
+ * be used for junction temperature monitoring, it is desirable that the
+ * sensors are operational all the time, so that alerts are generated
+ * properly.
+ *
+ * Return: 0
+ */
+static int ti_bandgap_set_continuous_mode(struct ti_bandgap *bgp)
+{
+	int i;
+
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		/* Perform a single read just before enabling continuous */
+		ti_bandgap_force_single_read(bgp, i);
+		RMW_BITS(bgp, i, bgap_mode_ctrl, mode_ctrl_mask, 1);
+	}
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_get_trend() - To fetch the temperature trend of a sensor
+ * @bgp: pointer to struct ti_bandgap
+ * @id: id of the individual sensor
+ * @trend: Pointer to trend.
+ *
+ * This function needs to be called to fetch the temperature trend of a
+ * Particular sensor. The function computes the difference in temperature
+ * w.r.t time. For the bandgaps with built in history buffer the temperatures
+ * are read from the buffer and for those without the Buffer -ENOTSUPP is
+ * returned.
+ *
+ * Return: 0 if no error, else return corresponding error. If no
+ *		error then the trend value is passed on to trend parameter
+ */
+int ti_bandgap_get_trend(struct ti_bandgap *bgp, int id, int *trend)
+{
+	struct temp_sensor_registers *tsr;
+	u32 temp1, temp2, reg1, reg2;
+	int t1, t2, interval, ret = 0;
+
+	ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		goto exit;
+
+	if (!TI_BANDGAP_HAS(bgp, HISTORY_BUFFER) ||
+	    !TI_BANDGAP_HAS(bgp, FREEZE_BIT)) {
+		ret = -ENOTSUPP;
+		goto exit;
+	}
+
+	tsr = bgp->conf->sensors[id].registers;
+
+	/* Freeze and read the last 2 valid readings */
+	reg1 = tsr->ctrl_dtemp_1;
+	reg2 = tsr->ctrl_dtemp_2;
+
+	/* read temperature from history buffer */
+	temp1 = ti_bandgap_readl(bgp, reg1);
+	temp1 &= tsr->bgap_dtemp_mask;
+
+	temp2 = ti_bandgap_readl(bgp, reg2);
+	temp2 &= tsr->bgap_dtemp_mask;
+
+	/* Convert from adc values to mCelsius temperature */
+	ret = ti_bandgap_adc_to_mcelsius(bgp, temp1, &t1);
+	if (ret)
+		goto exit;
+
+	ret = ti_bandgap_adc_to_mcelsius(bgp, temp2, &t2);
+	if (ret)
+		goto exit;
+
+	/* Fetch the update interval */
+	ret = ti_bandgap_read_update_interval(bgp, id, &interval);
+	if (ret || !interval)
+		goto exit;
+
+	*trend = (t1 - t2) / interval;
+
+	dev_dbg(bgp->dev, "The temperatures are t1 = %d and t2 = %d and trend =%d\n",
+		t1, t2, *trend);
+
+exit:
+	return ret;
+}
+
+/**
+ * ti_bandgap_tshut_init() - setup and initialize tshut handling
+ * @bgp: pointer to struct ti_bandgap
+ * @pdev: pointer to device struct platform_device
+ *
+ * Call this function only in case the bandgap features HAS(TSHUT).
+ * In this case, the driver needs to handle the TSHUT signal as an IRQ.
+ * The IRQ is wired as a GPIO, and for this purpose, it is required
+ * to specify which GPIO line is used. TSHUT IRQ is fired anytime
+ * one of the bandgap sensors violates the TSHUT high/hot threshold.
+ * And in that case, the system must go off.
+ *
+ * Return: 0 if no error, else error status
+ */
+static int ti_bandgap_tshut_init(struct ti_bandgap *bgp,
+				 struct platform_device *pdev)
+{
+	int gpio_nr = bgp->tshut_gpio;
+	int status;
+
+	/* Request for gpio_86 line */
+	status = gpio_request(gpio_nr, "tshut");
+	if (status < 0) {
+		dev_err(bgp->dev, "Could not request for TSHUT GPIO:%i\n", 86);
+		return status;
+	}
+	status = gpio_direction_input(gpio_nr);
+	if (status) {
+		dev_err(bgp->dev, "Cannot set input TSHUT GPIO %d\n", gpio_nr);
+		return status;
+	}
+
+	status = request_irq(gpio_to_irq(gpio_nr), ti_bandgap_tshut_irq_handler,
+			     IRQF_TRIGGER_RISING, "tshut", NULL);
+	if (status) {
+		gpio_free(gpio_nr);
+		dev_err(bgp->dev, "request irq failed for TSHUT");
+	}
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_alert_init() - setup and initialize talert handling
+ * @bgp: pointer to struct ti_bandgap
+ * @pdev: pointer to device struct platform_device
+ *
+ * Call this function only in case the bandgap features HAS(TALERT).
+ * In this case, the driver needs to handle the TALERT signals as an IRQs.
+ * TALERT is a normal IRQ and it is fired any time thresholds (hot or cold)
+ * are violated. In these situation, the driver must reprogram the thresholds,
+ * accordingly to specified policy.
+ *
+ * Return: 0 if no error, else return corresponding error.
+ */
+static int ti_bandgap_talert_init(struct ti_bandgap *bgp,
+				  struct platform_device *pdev)
+{
+	int ret;
+
+	bgp->irq = platform_get_irq(pdev, 0);
+	if (bgp->irq < 0) {
+		dev_err(&pdev->dev, "get_irq failed\n");
+		return bgp->irq;
+	}
+	ret = request_threaded_irq(bgp->irq, NULL,
+				   ti_bandgap_talert_irq_handler,
+				   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+				   "talert", bgp);
+	if (ret) {
+		dev_err(&pdev->dev, "Request threaded irq failed.\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id of_ti_bandgap_match[];
+/**
+ * ti_bandgap_build() - parse DT and setup a struct ti_bandgap
+ * @pdev: pointer to device struct platform_device
+ *
+ * Used to read the device tree properties accordingly to the bandgap
+ * matching version. Based on bandgap version and its capabilities it
+ * will build a struct ti_bandgap out of the required DT entries.
+ *
+ * Return: valid bandgap structure if successful, else returns ERR_PTR
+ * return value must be verified with IS_ERR.
+ */
+static struct ti_bandgap *ti_bandgap_build(struct platform_device *pdev)
+{
+	struct device_node *node = pdev->dev.of_node;
+	const struct of_device_id *of_id;
+	struct ti_bandgap *bgp;
+	struct resource *res;
+	u32 prop;
+	int i;
+
+	/* just for the sake */
+	if (!node) {
+		dev_err(&pdev->dev, "no platform information available\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	bgp = devm_kzalloc(&pdev->dev, sizeof(*bgp), GFP_KERNEL);
+	if (!bgp) {
+		dev_err(&pdev->dev, "Unable to allocate mem for driver ref\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	of_id = of_match_device(of_ti_bandgap_match, &pdev->dev);
+	if (of_id)
+		bgp->conf = of_id->data;
+
+	/* register shadow for context save and restore */
+	bgp->regval = devm_kzalloc(&pdev->dev, sizeof(*bgp->regval) *
+				   bgp->conf->sensor_count, GFP_KERNEL);
+	if (!bgp) {
+		dev_err(&pdev->dev, "Unable to allocate mem for driver ref\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	i = 0;
+	do {
+		void __iomem *chunk;
+
+		res = platform_get_resource(pdev, IORESOURCE_MEM, i);
+		if (!res)
+			break;
+		chunk = devm_ioremap_resource(&pdev->dev, res);
+		if (i == 0)
+			bgp->base = chunk;
+		if (IS_ERR(chunk))
+			return ERR_CAST(chunk);
+
+		i++;
+	} while (res);
+
+	if (TI_BANDGAP_HAS(bgp, TSHUT)) {
+		if (of_property_read_u32(node, "ti,tshut-gpio", &prop) < 0) {
+			dev_err(&pdev->dev, "missing tshut gpio in device tree\n");
+			return ERR_PTR(-EINVAL);
+		}
+		bgp->tshut_gpio = prop;
+		if (!gpio_is_valid(bgp->tshut_gpio)) {
+			dev_err(&pdev->dev, "invalid gpio for tshut (%d)\n",
+				bgp->tshut_gpio);
+			return ERR_PTR(-EINVAL);
+		}
+	}
+
+	return bgp;
+}
+
+/***   Device driver call backs   ***/
+
+static
+int ti_bandgap_probe(struct platform_device *pdev)
+{
+	struct ti_bandgap *bgp;
+	int clk_rate, ret = 0, i;
+
+	bgp = ti_bandgap_build(pdev);
+	if (IS_ERR_OR_NULL(bgp)) {
+		dev_err(&pdev->dev, "failed to fetch platform data\n");
+		return PTR_ERR(bgp);
+	}
+	bgp->dev = &pdev->dev;
+
+	if (TI_BANDGAP_HAS(bgp, TSHUT)) {
+		ret = ti_bandgap_tshut_init(bgp, pdev);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"failed to initialize system tshut IRQ\n");
+			return ret;
+		}
+	}
+
+	bgp->fclock = clk_get(NULL, bgp->conf->fclock_name);
+	ret = IS_ERR_OR_NULL(bgp->fclock);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to request fclock reference\n");
+		goto free_irqs;
+	}
+
+	bgp->div_clk = clk_get(NULL,  bgp->conf->div_ck_name);
+	ret = IS_ERR_OR_NULL(bgp->div_clk);
+	if (ret) {
+		dev_err(&pdev->dev,
+			"failed to request div_ts_ck clock ref\n");
+		goto free_irqs;
+	}
+
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		struct temp_sensor_registers *tsr;
+		u32 val;
+
+		tsr = bgp->conf->sensors[i].registers;
+		/*
+		 * check if the efuse has a non-zero value if not
+		 * it is an untrimmed sample and the temperatures
+		 * may not be accurate
+		 */
+		val = ti_bandgap_readl(bgp, tsr->bgap_efuse);
+		if (ret || !val)
+			dev_info(&pdev->dev,
+				 "Non-trimmed BGAP, Temp not accurate\n");
+	}
+
+	clk_rate = clk_round_rate(bgp->div_clk,
+				  bgp->conf->sensors[0].ts_data->max_freq);
+	if (clk_rate < bgp->conf->sensors[0].ts_data->min_freq ||
+	    clk_rate == 0xffffffff) {
+		ret = -ENODEV;
+		dev_err(&pdev->dev, "wrong clock rate (%d)\n", clk_rate);
+		goto put_clks;
+	}
+
+	ret = clk_set_rate(bgp->div_clk, clk_rate);
+	if (ret)
+		dev_err(&pdev->dev, "Cannot re-set clock rate. Continuing\n");
+
+	bgp->clk_rate = clk_rate;
+	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+		clk_prepare_enable(bgp->fclock);
+
+
+	spin_lock_init(&bgp->lock);
+	bgp->dev = &pdev->dev;
+	platform_set_drvdata(pdev, bgp);
+
+	ti_bandgap_power(bgp, true);
+
+	/* Set default counter to 1 for now */
+	if (TI_BANDGAP_HAS(bgp, COUNTER))
+		for (i = 0; i < bgp->conf->sensor_count; i++)
+			RMW_BITS(bgp, i, bgap_counter, counter_mask, 1);
+
+	/* Set default thresholds for alert and shutdown */
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		struct temp_sensor_data *ts_data;
+
+		ts_data = bgp->conf->sensors[i].ts_data;
+
+		if (TI_BANDGAP_HAS(bgp, TALERT)) {
+			/* Set initial Talert thresholds */
+			RMW_BITS(bgp, i, bgap_threshold,
+				 threshold_tcold_mask, ts_data->t_cold);
+			RMW_BITS(bgp, i, bgap_threshold,
+				 threshold_thot_mask, ts_data->t_hot);
+			/* Enable the alert events */
+			RMW_BITS(bgp, i, bgap_mask_ctrl, mask_hot_mask, 1);
+			RMW_BITS(bgp, i, bgap_mask_ctrl, mask_cold_mask, 1);
+		}
+
+		if (TI_BANDGAP_HAS(bgp, TSHUT_CONFIG)) {
+			/* Set initial Tshut thresholds */
+			RMW_BITS(bgp, i, tshut_threshold,
+				 tshut_hot_mask, ts_data->tshut_hot);
+			RMW_BITS(bgp, i, tshut_threshold,
+				 tshut_cold_mask, ts_data->tshut_cold);
+		}
+	}
+
+	if (TI_BANDGAP_HAS(bgp, MODE_CONFIG))
+		ti_bandgap_set_continuous_mode(bgp);
+
+	/* Set .250 seconds time as default counter */
+	if (TI_BANDGAP_HAS(bgp, COUNTER))
+		for (i = 0; i < bgp->conf->sensor_count; i++)
+			RMW_BITS(bgp, i, bgap_counter, counter_mask,
+				 bgp->clk_rate / 4);
+
+	/* Every thing is good? Then expose the sensors */
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		char *domain;
+
+		if (bgp->conf->sensors[i].register_cooling) {
+			ret = bgp->conf->sensors[i].register_cooling(bgp, i);
+			if (ret)
+				goto remove_sensors;
+		}
+
+		if (bgp->conf->expose_sensor) {
+			domain = bgp->conf->sensors[i].domain;
+			ret = bgp->conf->expose_sensor(bgp, i, domain);
+			if (ret)
+				goto remove_last_cooling;
+		}
+	}
+
+	/*
+	 * Enable the Interrupts once everything is set. Otherwise irq handler
+	 * might be called as soon as it is enabled where as rest of framework
+	 * is still getting initialised.
+	 */
+	if (TI_BANDGAP_HAS(bgp, TALERT)) {
+		ret = ti_bandgap_talert_init(bgp, pdev);
+		if (ret) {
+			dev_err(&pdev->dev, "failed to initialize Talert IRQ\n");
+			i = bgp->conf->sensor_count;
+			goto disable_clk;
+		}
+	}
+
+	return 0;
+
+remove_last_cooling:
+	if (bgp->conf->sensors[i].unregister_cooling)
+		bgp->conf->sensors[i].unregister_cooling(bgp, i);
+remove_sensors:
+	for (i--; i >= 0; i--) {
+		if (bgp->conf->sensors[i].unregister_cooling)
+			bgp->conf->sensors[i].unregister_cooling(bgp, i);
+		if (bgp->conf->remove_sensor)
+			bgp->conf->remove_sensor(bgp, i);
+	}
+	ti_bandgap_power(bgp, false);
+disable_clk:
+	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+		clk_disable_unprepare(bgp->fclock);
+put_clks:
+	clk_put(bgp->fclock);
+	clk_put(bgp->div_clk);
+free_irqs:
+	if (TI_BANDGAP_HAS(bgp, TSHUT)) {
+		free_irq(gpio_to_irq(bgp->tshut_gpio), NULL);
+		gpio_free(bgp->tshut_gpio);
+	}
+
+	return ret;
+}
+
+static
+int ti_bandgap_remove(struct platform_device *pdev)
+{
+	struct ti_bandgap *bgp = platform_get_drvdata(pdev);
+	int i;
+
+	/* First thing is to remove sensor interfaces */
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		if (bgp->conf->sensors[i].unregister_cooling)
+			bgp->conf->sensors[i].unregister_cooling(bgp, i);
+
+		if (bgp->conf->remove_sensor)
+			bgp->conf->remove_sensor(bgp, i);
+	}
+
+	ti_bandgap_power(bgp, false);
+
+	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+		clk_disable_unprepare(bgp->fclock);
+	clk_put(bgp->fclock);
+	clk_put(bgp->div_clk);
+
+	if (TI_BANDGAP_HAS(bgp, TALERT))
+		free_irq(bgp->irq, bgp);
+
+	if (TI_BANDGAP_HAS(bgp, TSHUT)) {
+		free_irq(gpio_to_irq(bgp->tshut_gpio), NULL);
+		gpio_free(bgp->tshut_gpio);
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int ti_bandgap_save_ctxt(struct ti_bandgap *bgp)
+{
+	int i;
+
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		struct temp_sensor_registers *tsr;
+		struct temp_sensor_regval *rval;
+
+		rval = &bgp->regval[i];
+		tsr = bgp->conf->sensors[i].registers;
+
+		if (TI_BANDGAP_HAS(bgp, MODE_CONFIG))
+			rval->bg_mode_ctrl = ti_bandgap_readl(bgp,
+							tsr->bgap_mode_ctrl);
+		if (TI_BANDGAP_HAS(bgp, COUNTER))
+			rval->bg_counter = ti_bandgap_readl(bgp,
+							tsr->bgap_counter);
+		if (TI_BANDGAP_HAS(bgp, TALERT)) {
+			rval->bg_threshold = ti_bandgap_readl(bgp,
+							tsr->bgap_threshold);
+			rval->bg_ctrl = ti_bandgap_readl(bgp,
+						   tsr->bgap_mask_ctrl);
+		}
+
+		if (TI_BANDGAP_HAS(bgp, TSHUT_CONFIG))
+			rval->tshut_threshold = ti_bandgap_readl(bgp,
+						   tsr->tshut_threshold);
+	}
+
+	return 0;
+}
+
+static int ti_bandgap_restore_ctxt(struct ti_bandgap *bgp)
+{
+	int i;
+
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		struct temp_sensor_registers *tsr;
+		struct temp_sensor_regval *rval;
+		u32 val = 0;
+
+		rval = &bgp->regval[i];
+		tsr = bgp->conf->sensors[i].registers;
+
+		if (TI_BANDGAP_HAS(bgp, COUNTER))
+			val = ti_bandgap_readl(bgp, tsr->bgap_counter);
+
+		if (TI_BANDGAP_HAS(bgp, TSHUT_CONFIG))
+			ti_bandgap_writel(bgp, rval->tshut_threshold,
+					  tsr->tshut_threshold);
+		/* Force immediate temperature measurement and update
+		 * of the DTEMP field
+		 */
+		ti_bandgap_force_single_read(bgp, i);
+
+		if (TI_BANDGAP_HAS(bgp, COUNTER))
+			ti_bandgap_writel(bgp, rval->bg_counter,
+					  tsr->bgap_counter);
+		if (TI_BANDGAP_HAS(bgp, MODE_CONFIG))
+			ti_bandgap_writel(bgp, rval->bg_mode_ctrl,
+					  tsr->bgap_mode_ctrl);
+		if (TI_BANDGAP_HAS(bgp, TALERT)) {
+			ti_bandgap_writel(bgp, rval->bg_threshold,
+					  tsr->bgap_threshold);
+			ti_bandgap_writel(bgp, rval->bg_ctrl,
+					  tsr->bgap_mask_ctrl);
+		}
+	}
+
+	return 0;
+}
+
+static int ti_bandgap_suspend(struct device *dev)
+{
+	struct ti_bandgap *bgp = dev_get_drvdata(dev);
+	int err;
+
+	err = ti_bandgap_save_ctxt(bgp);
+	ti_bandgap_power(bgp, false);
+
+	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+		clk_disable_unprepare(bgp->fclock);
+
+	return err;
+}
+
+static int ti_bandgap_resume(struct device *dev)
+{
+	struct ti_bandgap *bgp = dev_get_drvdata(dev);
+
+	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+		clk_prepare_enable(bgp->fclock);
+
+	ti_bandgap_power(bgp, true);
+
+	return ti_bandgap_restore_ctxt(bgp);
+}
+static const struct dev_pm_ops ti_bandgap_dev_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(ti_bandgap_suspend,
+				ti_bandgap_resume)
+};
+
+#define DEV_PM_OPS	(&ti_bandgap_dev_pm_ops)
+#else
+#define DEV_PM_OPS	NULL
+#endif
+
+static const struct of_device_id of_ti_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
+#ifdef CONFIG_OMAP5_THERMAL
+	{
+		.compatible = "ti,omap5430-bandgap",
+		.data = (void *)&omap5430_data,
+	},
+#endif
+	/* Sentinel */
+	{ },
+};
+MODULE_DEVICE_TABLE(of, of_ti_bandgap_match);
+
+static struct platform_driver ti_bandgap_sensor_driver = {
+	.probe = ti_bandgap_probe,
+	.remove = ti_bandgap_remove,
+	.driver = {
+			.name = "ti-soc-thermal",
+			.pm = DEV_PM_OPS,
+			.of_match_table	= of_ti_bandgap_match,
+	},
+};
+
+module_platform_driver(ti_bandgap_sensor_driver);
+
+MODULE_DESCRIPTION("OMAP4+ bandgap temperature sensor driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:ti-soc-thermal");
+MODULE_AUTHOR("Texas Instrument Inc.");
diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.h b/drivers/thermal/ti-soc-thermal/ti-bandgap.h
new file mode 100644
index 000000000000..5f4794abf583
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.h
@@ -0,0 +1,403 @@
+/*
+ * 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
+
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/err.h>
+
+/**
+ * DOC: bandgap driver data structure
+ * ==================================
+ *
+ *   +----------+----------------+
+ *   | struct temp_sensor_regval |
+ *   +---------------------------+
+ *              * (Array of)
+ *              |
+ *              |
+ *   +-------------------+   +-----------------+
+ *   | struct ti_bandgap |-->| struct device * |
+ *   +----------+--------+   +-----------------+
+ *              |
+ *              |
+ *              V
+ *   +------------------------+
+ *   | struct ti_bandgap_data |
+ *   +------------------------+
+ *              |
+ *              |
+ *              * (Array of)
+ * +------------+------------------------------------------------------+
+ * | +----------+------------+   +-------------------------+           |
+ * | | struct ti_temp_sensor |-->| struct temp_sensor_data |           |
+ * | +-----------------------+   +------------+------------+           |
+ * |            |                                                      |
+ * |            +                                                      |
+ * |            V                                                      |
+ * | +----------+-------------------+                                  |
+ * | | struct temp_sensor_registers |                                  |
+ * | +------------------------------+                                  |
+ * |                                                                   |
+ * +-------------------------------------------------------------------+
+ *
+ * Above is a simple diagram describing how the data structure below
+ * are organized. For each bandgap device there should be a ti_bandgap_data
+ * containing the device instance configuration, as well as, an array of
+ * sensors, representing every sensor instance present in this bandgap.
+ */
+
+/**
+ * struct temp_sensor_registers - descriptor to access registers and bitfields
+ * @temp_sensor_ctrl: TEMP_SENSOR_CTRL register offset
+ * @bgap_tempsoff_mask: mask to temp_sensor_ctrl.tempsoff
+ * @bgap_soc_mask: mask to temp_sensor_ctrl.soc
+ * @bgap_eocz_mask: mask to temp_sensor_ctrl.eocz
+ * @bgap_dtemp_mask: mask to temp_sensor_ctrl.dtemp
+ * @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
+ * @counter_mask: mask to bandgap_counter.counter
+ * @bgap_threshold: BANDGAP_THRESHOLD register offset (TALERT thresholds)
+ * @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
+ * OMAP and variants versions. Hence this struct serves as a
+ * descriptor map on how to access the registers and the bitfields.
+ *
+ * This descriptor contains registers of all versions of bandgap chips.
+ * Not all versions will use all registers, depending on the available
+ * features. Please read TRMs for descriptive explanation on each bitfield.
+ */
+
+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_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;
+
+	u32	bgap_counter;
+	u32	counter_mask;
+
+	u32	bgap_threshold;
+	u32	threshold_thot_mask;
+	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	bgap_efuse;
+};
+
+/**
+ * struct temp_sensor_data - The thresholds and limits for temperature sensors.
+ * @tshut_hot: temperature to trigger a thermal reset (initial value)
+ * @tshut_cold: temp to get the plat out of reset due to thermal (init val)
+ * @t_hot: temperature to trigger a thermal alert (high initial value)
+ * @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
+ * temperature, clock / rate used, ADC conversion limits and update intervals
+ */
+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     update_int1; /* not used */
+	u32     update_int2; /* not used */
+};
+
+struct ti_bandgap_data;
+
+/**
+ * struct temp_sensor_regval - temperature sensor register values and priv data
+ * @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
+ * @data: private data
+ *
+ * Data structure to save and restore bandgap register set context. Only
+ * required registers are shadowed, when needed.
+ */
+struct temp_sensor_regval {
+	u32			bg_mode_ctrl;
+	u32			bg_ctrl;
+	u32			bg_counter;
+	u32			bg_threshold;
+	u32			tshut_threshold;
+	void			*data;
+};
+
+/**
+ * struct ti_bandgap - bandgap device structure
+ * @dev: struct device pointer
+ * @base: io memory base address
+ * @conf: struct with bandgap configuration set (# sensors, conv_table, etc)
+ * @regval: temperature sensor register values
+ * @fclock: pointer to functional clock of temperature sensor
+ * @div_clk: pointer to divider clock of temperature sensor fclk
+ * @lock: spinlock for ti_bandgap structure
+ * @irq: MPU IRQ number for thermal alert
+ * @tshut_gpio: GPIO where Tshut signal is routed
+ * @clk_rate: Holds current clock rate
+ *
+ * The bandgap device structure representing the bandgap device instance.
+ * It holds most of the dynamic stuff. Configurations and sensor specific
+ * entries are inside the @conf structure.
+ */
+struct ti_bandgap {
+	struct device			*dev;
+	void __iomem			*base;
+	const struct ti_bandgap_data	*conf;
+	struct temp_sensor_regval	*regval;
+	struct clk			*fclock;
+	struct clk			*div_clk;
+	spinlock_t			lock; /* shields this struct */
+	int				irq;
+	int				tshut_gpio;
+	u32				clk_rate;
+};
+
+/**
+ * struct ti_temp_sensor - bandgap temperature sensor configuration data
+ * @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
+ *             with no external influence
+ * @register_cooling: function to describe how this sensor is going to be cooled
+ * @unregister_cooling: function to release cooling data
+ *
+ * Data structure to describe a temperature sensor handled by a bandgap device.
+ * It should provide configuration details on this sensor, such as how to
+ * access the registers affecting this sensor, shadow register buffer, how to
+ * assess the gradient from hotspot, how to cooldown the domain when sensor
+ * reports too hot temperature.
+ */
+struct ti_temp_sensor {
+	struct temp_sensor_data		*ts_data;
+	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);
+	int (*unregister_cooling)(struct ti_bandgap *bgp, int id);
+};
+
+/**
+ * DOC: ti bandgap feature types
+ *
+ * TI_BANDGAP_FEATURE_TSHUT - used when the thermal shutdown signal output
+ *      of a bandgap device instance is routed to the processor. This means
+ *      the system must react and perform the shutdown by itself (handle an
+ *      IRQ, for instance).
+ *
+ * TI_BANDGAP_FEATURE_TSHUT_CONFIG - used when the bandgap device has control
+ *      over the thermal shutdown configuration. This means that the thermal
+ *      shutdown thresholds are programmable, for instance.
+ *
+ * TI_BANDGAP_FEATURE_TALERT - used when the bandgap device instance outputs
+ *      a signal representing violation of programmable alert thresholds.
+ *
+ * TI_BANDGAP_FEATURE_MODE_CONFIG - used when it is possible to choose which
+ *      mode, continuous or one shot, the bandgap device instance will operate.
+ *
+ * TI_BANDGAP_FEATURE_COUNTER - used when the bandgap device instance allows
+ *      programming the update interval of its internal state machine.
+ *
+ * TI_BANDGAP_FEATURE_POWER_SWITCH - used when the bandgap device allows
+ *      itself to be switched on/off.
+ *
+ * TI_BANDGAP_FEATURE_CLK_CTRL - used when the clocks feeding the bandgap
+ *      device are gateable or not.
+ *
+ * TI_BANDGAP_FEATURE_FREEZE_BIT - used when the bandgap device features
+ *      a history buffer that its update can be freezed/unfreezed.
+ *
+ * TI_BANDGAP_FEATURE_COUNTER_DELAY - used when the bandgap device features
+ *	a delay programming based on distinct values.
+ *
+ * TI_BANDGAP_FEATURE_HISTORY_BUFFER - used when the bandgap device features
+ *	a history buffer of temperatures.
+ *
+ * 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.
+ */
+#define TI_BANDGAP_FEATURE_TSHUT		BIT(0)
+#define TI_BANDGAP_FEATURE_TSHUT_CONFIG		BIT(1)
+#define TI_BANDGAP_FEATURE_TALERT		BIT(2)
+#define TI_BANDGAP_FEATURE_MODE_CONFIG		BIT(3)
+#define TI_BANDGAP_FEATURE_COUNTER		BIT(4)
+#define TI_BANDGAP_FEATURE_POWER_SWITCH		BIT(5)
+#define TI_BANDGAP_FEATURE_CLK_CTRL		BIT(6)
+#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_HAS(b, f)			\
+			((b)->conf->features & TI_BANDGAP_FEATURE_ ## f)
+
+/**
+ * struct ti_bandgap_data - ti bandgap data configuration structure
+ * @features: a bitwise flag set to describe the device features
+ * @conv_table: Pointer to ADC to temperature conversion table
+ * @adc_start_val: ADC conversion table starting value
+ * @adc_end_val: ADC conversion table ending value
+ * @fclock_name: clock name of the functional clock
+ * @div_ck_name: clock name of the clock divisor
+ * @sensor_count: count of temperature sensor within this bandgap device
+ * @report_temperature: callback to report thermal alert to thermal API
+ * @expose_sensor: callback to export sensor to thermal API
+ * @remove_sensor: callback to destroy sensor from thermal API
+ * @sensors: array of sensors present in this bandgap instance
+ *
+ * This is a data structure which should hold most of the static configuration
+ * of a bandgap device instance. It should describe which features this instance
+ * is capable of, the clock names to feed this device, the amount of sensors and
+ * their configuration representation, and how to export and unexport them to
+ * a thermal API.
+ */
+struct ti_bandgap_data {
+	unsigned int			features;
+	const int			*conv_table;
+	u32				adc_start_val;
+	u32				adc_end_val;
+	char				*fclock_name;
+	char				*div_ck_name;
+	int				sensor_count;
+	int (*report_temperature)(struct ti_bandgap *bgp, int id);
+	int (*expose_sensor)(struct ti_bandgap *bgp, int id, char *domain);
+	int (*remove_sensor)(struct ti_bandgap *bgp, int id);
+
+	/* this needs to be at the end */
+	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,
+				     u32 interval);
+int ti_bandgap_read_temperature(struct ti_bandgap *bgp, int id,
+				  int *temperature);
+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_OMAP4_THERMAL
+extern const struct ti_bandgap_data omap4430_data;
+extern const struct ti_bandgap_data omap4460_data;
+extern const struct ti_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 ti_bandgap_data omap5430_data;
+#else
+#define omap5430_data					NULL
+#endif
+
+#endif
diff --git a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
new file mode 100644
index 000000000000..e3c5e677eaa5
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
@@ -0,0 +1,367 @@
+/*
+ * OMAP thermal driver interface
+ *
+ * Copyright (C) 2012 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
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/gfp.h>
+#include <linux/kernel.h>
+#include <linux/workqueue.h>
+#include <linux/thermal.h>
+#include <linux/cpufreq.h>
+#include <linux/cpumask.h>
+#include <linux/cpu_cooling.h>
+
+#include "ti-thermal.h"
+#include "ti-bandgap.h"
+
+/* common data structures */
+struct ti_thermal_data {
+	struct thermal_zone_device *ti_thermal;
+	struct thermal_cooling_device *cool_dev;
+	struct ti_bandgap *bgp;
+	enum thermal_device_mode mode;
+	struct work_struct thermal_wq;
+	int sensor_id;
+};
+
+static void ti_thermal_work(struct work_struct *work)
+{
+	struct ti_thermal_data *data = container_of(work,
+					struct ti_thermal_data, thermal_wq);
+
+	thermal_zone_device_update(data->ti_thermal);
+
+	dev_dbg(&data->ti_thermal->device, "updated thermal zone %s\n",
+		data->ti_thermal->type);
+}
+
+/**
+ * ti_thermal_hotspot_temperature - returns sensor extrapolated temperature
+ * @t:	omap sensor temperature
+ * @s:	omap sensor slope value
+ * @c:	omap sensor const value
+ */
+static inline int ti_thermal_hotspot_temperature(int t, int s, int c)
+{
+	int delta = t * s / 1000 + c;
+
+	if (delta < 0)
+		delta = 0;
+
+	return t + delta;
+}
+
+/* thermal zone ops */
+/* Get temperature callback function for thermal zone*/
+static inline int ti_thermal_get_temp(struct thermal_zone_device *thermal,
+				      unsigned long *temp)
+{
+	struct ti_thermal_data *data = thermal->devdata;
+	struct ti_bandgap *bgp;
+	const struct ti_temp_sensor *s;
+	int ret, tmp, pcb_temp, slope, constant;
+
+	if (!data)
+		return 0;
+
+	bgp = data->bgp;
+	s = &bgp->conf->sensors[data->sensor_id];
+
+	ret = ti_bandgap_read_temperature(bgp, data->sensor_id, &tmp);
+	if (ret)
+		return ret;
+
+	pcb_temp = 0;
+	/* TODO: Introduce pcb temperature lookup */
+	/* In case pcb zone is available, use the extrapolation rule with it */
+	if (pcb_temp) {
+		tmp -= pcb_temp;
+		slope = s->slope_pcb;
+		constant = s->constant_pcb;
+	} else {
+		slope = s->slope;
+		constant = s->constant;
+	}
+	*temp = ti_thermal_hotspot_temperature(tmp, slope, constant);
+
+	return ret;
+}
+
+/* Bind callback functions for thermal zone */
+static int ti_thermal_bind(struct thermal_zone_device *thermal,
+			   struct thermal_cooling_device *cdev)
+{
+	struct ti_thermal_data *data = thermal->devdata;
+	int id;
+
+	if (IS_ERR_OR_NULL(data))
+		return -ENODEV;
+
+	/* check if this is the cooling device we registered */
+	if (data->cool_dev != cdev)
+		return 0;
+
+	id = data->sensor_id;
+
+	/* Simple thing, two trips, one passive another critical */
+	return thermal_zone_bind_cooling_device(thermal, 0, cdev,
+	/* bind with min and max states defined by cpu_cooling */
+						THERMAL_NO_LIMIT,
+						THERMAL_NO_LIMIT);
+}
+
+/* Unbind callback functions for thermal zone */
+static int ti_thermal_unbind(struct thermal_zone_device *thermal,
+			     struct thermal_cooling_device *cdev)
+{
+	struct ti_thermal_data *data = thermal->devdata;
+
+	if (IS_ERR_OR_NULL(data))
+		return -ENODEV;
+
+	/* check if this is the cooling device we registered */
+	if (data->cool_dev != cdev)
+		return 0;
+
+	/* Simple thing, two trips, one passive another critical */
+	return thermal_zone_unbind_cooling_device(thermal, 0, cdev);
+}
+
+/* Get mode callback functions for thermal zone */
+static int ti_thermal_get_mode(struct thermal_zone_device *thermal,
+			       enum thermal_device_mode *mode)
+{
+	struct ti_thermal_data *data = thermal->devdata;
+
+	if (data)
+		*mode = data->mode;
+
+	return 0;
+}
+
+/* Set mode callback functions for thermal zone */
+static int ti_thermal_set_mode(struct thermal_zone_device *thermal,
+			       enum thermal_device_mode mode)
+{
+	struct ti_thermal_data *data = thermal->devdata;
+
+	if (!data->ti_thermal) {
+		dev_notice(&thermal->device, "thermal zone not registered\n");
+		return 0;
+	}
+
+	mutex_lock(&data->ti_thermal->lock);
+
+	if (mode == THERMAL_DEVICE_ENABLED)
+		data->ti_thermal->polling_delay = FAST_TEMP_MONITORING_RATE;
+	else
+		data->ti_thermal->polling_delay = 0;
+
+	mutex_unlock(&data->ti_thermal->lock);
+
+	data->mode = mode;
+	thermal_zone_device_update(data->ti_thermal);
+	dev_dbg(&thermal->device, "thermal polling set for duration=%d msec\n",
+		data->ti_thermal->polling_delay);
+
+	return 0;
+}
+
+/* Get trip type callback functions for thermal zone */
+static int ti_thermal_get_trip_type(struct thermal_zone_device *thermal,
+				    int trip, enum thermal_trip_type *type)
+{
+	if (!ti_thermal_is_valid_trip(trip))
+		return -EINVAL;
+
+	if (trip + 1 == OMAP_TRIP_NUMBER)
+		*type = THERMAL_TRIP_CRITICAL;
+	else
+		*type = THERMAL_TRIP_PASSIVE;
+
+	return 0;
+}
+
+/* Get trip temperature callback functions for thermal zone */
+static int ti_thermal_get_trip_temp(struct thermal_zone_device *thermal,
+				    int trip, unsigned long *temp)
+{
+	if (!ti_thermal_is_valid_trip(trip))
+		return -EINVAL;
+
+	*temp = ti_thermal_get_trip_value(trip);
+
+	return 0;
+}
+
+/* Get the temperature trend callback functions for thermal zone */
+static int ti_thermal_get_trend(struct thermal_zone_device *thermal,
+				int trip, enum thermal_trend *trend)
+{
+	struct ti_thermal_data *data = thermal->devdata;
+	struct ti_bandgap *bgp;
+	int id, tr, ret = 0;
+
+	bgp = data->bgp;
+	id = data->sensor_id;
+
+	ret = ti_bandgap_get_trend(bgp, id, &tr);
+	if (ret)
+		return ret;
+
+	if (tr > 0)
+		*trend = THERMAL_TREND_RAISING;
+	else if (tr < 0)
+		*trend = THERMAL_TREND_DROPPING;
+	else
+		*trend = THERMAL_TREND_STABLE;
+
+	return 0;
+}
+
+/* Get critical temperature callback functions for thermal zone */
+static int ti_thermal_get_crit_temp(struct thermal_zone_device *thermal,
+				    unsigned long *temp)
+{
+	/* shutdown zone */
+	return ti_thermal_get_trip_temp(thermal, OMAP_TRIP_NUMBER - 1, temp);
+}
+
+static struct thermal_zone_device_ops ti_thermal_ops = {
+	.get_temp = ti_thermal_get_temp,
+	.get_trend = ti_thermal_get_trend,
+	.bind = ti_thermal_bind,
+	.unbind = ti_thermal_unbind,
+	.get_mode = ti_thermal_get_mode,
+	.set_mode = ti_thermal_set_mode,
+	.get_trip_type = ti_thermal_get_trip_type,
+	.get_trip_temp = ti_thermal_get_trip_temp,
+	.get_crit_temp = ti_thermal_get_crit_temp,
+};
+
+static struct ti_thermal_data
+*ti_thermal_build_data(struct ti_bandgap *bgp, int id)
+{
+	struct ti_thermal_data *data;
+
+	data = devm_kzalloc(bgp->dev, sizeof(*data), GFP_KERNEL);
+	if (!data) {
+		dev_err(bgp->dev, "kzalloc fail\n");
+		return NULL;
+	}
+	data->sensor_id = id;
+	data->bgp = bgp;
+	data->mode = THERMAL_DEVICE_ENABLED;
+	INIT_WORK(&data->thermal_wq, ti_thermal_work);
+
+	return data;
+}
+
+int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id,
+			     char *domain)
+{
+	struct ti_thermal_data *data;
+
+	data = ti_bandgap_get_sensor_data(bgp, id);
+
+	if (IS_ERR_OR_NULL(data))
+		data = ti_thermal_build_data(bgp, id);
+
+	if (!data)
+		return -EINVAL;
+
+	/* Create thermal zone */
+	data->ti_thermal = thermal_zone_device_register(domain,
+				OMAP_TRIP_NUMBER, 0, data, &ti_thermal_ops,
+				NULL, FAST_TEMP_MONITORING_RATE,
+				FAST_TEMP_MONITORING_RATE);
+	if (IS_ERR_OR_NULL(data->ti_thermal)) {
+		dev_err(bgp->dev, "thermal zone device is NULL\n");
+		return PTR_ERR(data->ti_thermal);
+	}
+	data->ti_thermal->polling_delay = FAST_TEMP_MONITORING_RATE;
+	ti_bandgap_set_sensor_data(bgp, id, data);
+
+	return 0;
+}
+
+int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id)
+{
+	struct ti_thermal_data *data;
+
+	data = ti_bandgap_get_sensor_data(bgp, id);
+
+	thermal_zone_device_unregister(data->ti_thermal);
+
+	return 0;
+}
+
+int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id)
+{
+	struct ti_thermal_data *data;
+
+	data = ti_bandgap_get_sensor_data(bgp, id);
+
+	schedule_work(&data->thermal_wq);
+
+	return 0;
+}
+
+int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id)
+{
+	struct ti_thermal_data *data;
+
+	data = ti_bandgap_get_sensor_data(bgp, id);
+	if (IS_ERR_OR_NULL(data))
+		data = ti_thermal_build_data(bgp, id);
+
+	if (!data)
+		return -EINVAL;
+
+	if (!cpufreq_get_current_driver()) {
+		dev_dbg(bgp->dev, "no cpufreq driver yet\n");
+		return -EPROBE_DEFER;
+	}
+
+	/* Register cooling device */
+	data->cool_dev = cpufreq_cooling_register(cpu_present_mask);
+	if (IS_ERR_OR_NULL(data->cool_dev)) {
+		dev_err(bgp->dev,
+			"Failed to register cpufreq cooling device\n");
+		return PTR_ERR(data->cool_dev);
+	}
+	ti_bandgap_set_sensor_data(bgp, id, data);
+
+	return 0;
+}
+
+int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id)
+{
+	struct ti_thermal_data *data;
+
+	data = ti_bandgap_get_sensor_data(bgp, id);
+	cpufreq_cooling_unregister(data->cool_dev);
+
+	return 0;
+}
diff --git a/drivers/thermal/ti-soc-thermal/ti-thermal.h b/drivers/thermal/ti-soc-thermal/ti-thermal.h
new file mode 100644
index 000000000000..5055777727cc
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/ti-thermal.h
@@ -0,0 +1,117 @@
+/*
+ * OMAP thermal definitions
+ *
+ * Copyright (C) 2012 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_THERMAL_H
+#define __TI_THERMAL_H
+
+#include "ti-bandgap.h"
+
+/* sensors gradient and offsets */
+#define OMAP_GRADIENT_SLOPE_4430				0
+#define OMAP_GRADIENT_CONST_4430				20000
+#define OMAP_GRADIENT_SLOPE_4460				348
+#define OMAP_GRADIENT_CONST_4460				-9301
+#define OMAP_GRADIENT_SLOPE_4470				308
+#define OMAP_GRADIENT_CONST_4470				-7896
+
+#define OMAP_GRADIENT_SLOPE_5430_CPU				65
+#define OMAP_GRADIENT_CONST_5430_CPU				-1791
+#define OMAP_GRADIENT_SLOPE_5430_GPU				117
+#define OMAP_GRADIENT_CONST_5430_GPU				-2992
+
+/* PCB sensor calculation constants */
+#define OMAP_GRADIENT_SLOPE_W_PCB_4430				0
+#define OMAP_GRADIENT_CONST_W_PCB_4430				20000
+#define OMAP_GRADIENT_SLOPE_W_PCB_4460				1142
+#define OMAP_GRADIENT_CONST_W_PCB_4460				-393
+#define OMAP_GRADIENT_SLOPE_W_PCB_4470				1063
+#define OMAP_GRADIENT_CONST_W_PCB_4470				-477
+
+#define OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU			100
+#define OMAP_GRADIENT_CONST_W_PCB_5430_CPU			484
+#define OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU			464
+#define OMAP_GRADIENT_CONST_W_PCB_5430_GPU			-5102
+
+/* trip points of interest in milicelsius (at hotspot level) */
+#define OMAP_TRIP_COLD						100000
+#define OMAP_TRIP_HOT						110000
+#define OMAP_TRIP_SHUTDOWN					125000
+#define OMAP_TRIP_NUMBER					2
+#define OMAP_TRIP_STEP							\
+	((OMAP_TRIP_SHUTDOWN - OMAP_TRIP_HOT) / (OMAP_TRIP_NUMBER - 1))
+
+/* Update rates */
+#define FAST_TEMP_MONITORING_RATE				250
+
+/* helper macros */
+/**
+ * ti_thermal_get_trip_value - returns trip temperature based on index
+ * @i:	trip index
+ */
+#define ti_thermal_get_trip_value(i)					\
+	(OMAP_TRIP_HOT + ((i) * OMAP_TRIP_STEP))
+
+/**
+ * ti_thermal_is_valid_trip - check for trip index
+ * @i:	trip index
+ */
+#define ti_thermal_is_valid_trip(trip)				\
+	((trip) >= 0 && (trip) < OMAP_TRIP_NUMBER)
+
+#ifdef CONFIG_TI_THERMAL
+int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id, char *domain);
+int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id);
+int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id);
+int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id);
+int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id);
+#else
+static inline
+int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id, char *domain)
+{
+	return 0;
+}
+
+static inline
+int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id)
+{
+	return 0;
+}
+
+static inline
+int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id)
+{
+	return 0;
+}
+
+static inline
+int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id)
+{
+	return 0;
+}
+
+static inline
+int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id)
+{
+	return 0;
+}
+#endif
+#endif