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staging: omap-thermal: introduce new features of OMAP54xx
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On OMAP54xx ES2.0 there are new features inside the bandgap
device. This patch introduces the registers definition
to access these features and adapts the data structures
to map these new registers. The new features are:

. SIDLE mode
. Cumulative register
. History buffer.
. Buffer freeze bit
. Buffer clear bit

Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Eduardo Valentin authored and Greg Kroah-Hartman committed Mar 11, 2013
1 parent 9345640 commit 1aa556a
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Showing 2 changed files with 106 additions and 7 deletions.
65 changes: 64 additions & 1 deletion drivers/staging/omap-thermal/omap-bandgap.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -118,6 +118,26 @@
#define OMAP5430_MASK_HOT_MPU_MASK (1 << 1)
#define OMAP5430_MASK_COLD_MPU_SHIFT 0
#define OMAP5430_MASK_COLD_MPU_MASK (1 << 0)
#define OMAP5430_MASK_SIDLEMODE_SHIFT 30
#define OMAP5430_MASK_SIDLEMODE_MASK (0x3 << 30)
#define OMAP5430_MASK_FREEZE_CORE_SHIFT 23
#define OMAP5430_MASK_FREEZE_CORE_MASK (1 << 23)
#define OMAP5430_MASK_FREEZE_GPU_SHIFT 22
#define OMAP5430_MASK_FREEZE_GPU_MASK (1 << 22)
#define OMAP5430_MASK_FREEZE_MPU_SHIFT 21
#define OMAP5430_MASK_FREEZE_MPU_MASK (1 << 21)
#define OMAP5430_MASK_CLEAR_CORE_SHIFT 20
#define OMAP5430_MASK_CLEAR_CORE_MASK (1 << 20)
#define OMAP5430_MASK_CLEAR_GPU_SHIFT 19
#define OMAP5430_MASK_CLEAR_GPU_MASK (1 << 19)
#define OMAP5430_MASK_CLEAR_MPU_SHIFT 18
#define OMAP5430_MASK_CLEAR_MPU_MASK (1 << 18)
#define OMAP5430_MASK_CLEAR_ACCUM_CORE_SHIFT 17
#define OMAP5430_MASK_CLEAR_ACCUM_CORE_MASK (1 << 17)
#define OMAP5430_MASK_CLEAR_ACCUM_GPU_SHIFT 16
#define OMAP5430_MASK_CLEAR_ACCUM_GPU_MASK (1 << 16)
#define OMAP5430_MASK_CLEAR_ACCUM_MPU_SHIFT 15
#define OMAP5430_MASK_CLEAR_ACCUM_MPU_MASK (1 << 15)

/* BANDGAP_COUNTER */
#define OMAP5430_REPEAT_MODE_SHIFT 31
Expand All @@ -137,6 +157,18 @@
#define OMAP5430_TSHUT_COLD_SHIFT 0
#define OMAP5430_TSHUT_COLD_MASK (0x3ff << 0)

/* BANDGAP_CUMUL_DTEMP_MPU */
#define OMAP5430_CUMUL_DTEMP_MPU_SHIFT 0
#define OMAP5430_CUMUL_DTEMP_MPU_MASK (0xffffffff << 0)

/* BANDGAP_CUMUL_DTEMP_GPU */
#define OMAP5430_CUMUL_DTEMP_GPU_SHIFT 0
#define OMAP5430_CUMUL_DTEMP_GPU_MASK (0xffffffff << 0)

/* BANDGAP_CUMUL_DTEMP_CORE */
#define OMAP5430_CUMUL_DTEMP_CORE_SHIFT 0
#define OMAP5430_CUMUL_DTEMP_CORE_MASK (0xffffffff << 0)

/* BANDGAP_STATUS */
#define OMAP5430_BGAP_ALERT_SHIFT 31
#define OMAP5430_BGAP_ALERT_MASK (1 << 31)
Expand Down Expand Up @@ -174,20 +206,39 @@
#define OMAP5430_BGAP_COUNTER_GPU_OFFSET 0x1C0
#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

#define OMAP5430_FUSE_OPP_BGAP_MPU 0x4
#define OMAP5430_TEMP_SENSOR_MPU_OFFSET 0x14C
#define OMAP5430_BGAP_CTRL_OFFSET 0x1A0
#define OMAP5430_BGAP_COUNTER_MPU_OFFSET 0x1BC
#define OMAP5430_BGAP_THRESHOLD_MPU_OFFSET 0x1A4
#define OMAP5430_BGAP_TSHUT_MPU_OFFSET 0x1B0
#define OMAP5430_BGAP_STATUS_OFFSET 0x1C8
#define OMAP5430_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

#define OMAP5430_FUSE_OPP_BGAP_CORE 0x8
#define OMAP5430_TEMP_SENSOR_CORE_OFFSET 0x154
#define OMAP5430_BGAP_COUNTER_CORE_OFFSET 0x1C4
#define OMAP5430_BGAP_THRESHOLD_CORE_OFFSET 0x1AC
#define OMAP5430_BGAP_TSHUT_CORE_OFFSET 0x1B8
#define 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

#define OMAP5430_BGAP_STATUS_OFFSET 0x1C8

#define OMAP4460_TSHUT_HOT 900 /* 122 deg C */
#define OMAP4460_TSHUT_COLD 895 /* 100 deg C */
Expand Down Expand Up @@ -248,6 +299,10 @@ struct temp_sensor_registers {
u32 bgap_mask_ctrl;
u32 mask_hot_mask;
u32 mask_cold_mask;
u32 mask_sidlemode_mask;
u32 mask_freeze_mask;
u32 mask_clear_mask;
u32 mask_clear_accum_mask;

u32 bgap_mode_ctrl;
u32 mode_ctrl_mask;
Expand All @@ -260,6 +315,8 @@ struct temp_sensor_registers {
u32 threshold_tcold_mask;

u32 tshut_threshold;
u32 tshut_efuse_mask;
u32 tshut_efuse_shift;
u32 tshut_hot_mask;
u32 tshut_cold_mask;

Expand All @@ -269,6 +326,12 @@ struct temp_sensor_registers {
u32 status_hot_mask;
u32 status_cold_mask;

u32 bgap_cumul_dtemp;
u32 ctrl_dtemp_0;
u32 ctrl_dtemp_1;
u32 ctrl_dtemp_2;
u32 ctrl_dtemp_3;
u32 ctrl_dtemp_4;
u32 bgap_efuse;
};

Expand Down
48 changes: 42 additions & 6 deletions drivers/staging/omap-thermal/omap5-thermal.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -20,8 +20,12 @@
#include "omap-thermal.h"

/*
* omap5430 has one instance of thermal sensor for MPU
* need to describe the individual bit fields
* 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 = {
Expand All @@ -33,6 +37,10 @@ omap5430_mpu_temp_sensor_registers = {
.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_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_COUNTER_MPU_OFFSET,
Expand All @@ -52,12 +60,17 @@ omap5430_mpu_temp_sensor_registers = {
.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 has one instance of thermal sensor for GPU
* need to describe the individual bit fields
* OMAP5430 GPU thermal sensor register offset and bit-fields
*/
static struct temp_sensor_registers
omap5430_gpu_temp_sensor_registers = {
Expand All @@ -69,6 +82,10 @@ omap5430_gpu_temp_sensor_registers = {
.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_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_COUNTER_GPU_OFFSET,
.counter_mask = OMAP5430_COUNTER_MASK,
Expand All @@ -87,12 +104,18 @@ omap5430_gpu_temp_sensor_registers = {
.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 has one instance of thermal sensor for CORE
* need to describe the individual bit fields
* OMAP5430 CORE thermal sensor register offset and bit-fields
*/
static struct temp_sensor_registers
omap5430_core_temp_sensor_registers = {
Expand All @@ -104,6 +127,10 @@ omap5430_core_temp_sensor_registers = {
.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_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_COUNTER_CORE_OFFSET,
.counter_mask = OMAP5430_COUNTER_MASK,
Expand All @@ -122,6 +149,13 @@ omap5430_core_temp_sensor_registers = {
.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,
};

Expand Down Expand Up @@ -281,6 +315,8 @@ omap5430_adc_to_temp[
123800, 1242000, 124600, 124900, 125000, 125000,
};

/* OMAP54xx ES2.0 data */
/* TODO : Need to update the slope/constant for ES2.0 silicon */
const struct omap_bandgap_data omap5430_data = {
.features = OMAP_BANDGAP_FEATURE_TSHUT_CONFIG |
OMAP_BANDGAP_FEATURE_TALERT |
Expand Down

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