diff options
| -rw-r--r-- | arch/arm/mach-tegra/board-pluto-powermon.c | 63 | ||||
| -rw-r--r-- | include/linux/platform_data/ina230.h | 1 |
2 files changed, 53 insertions, 11 deletions
diff --git a/arch/arm/mach-tegra/board-pluto-powermon.c b/arch/arm/mach-tegra/board-pluto-powermon.c index 06b984d66ffc..981a956a4161 100644 --- a/arch/arm/mach-tegra/board-pluto-powermon.c +++ b/arch/arm/mach-tegra/board-pluto-powermon.c @@ -18,7 +18,6 @@ */ #include <linux/i2c.h> -#include <linux/ina219.h> #include <linux/platform_data/ina230.h> #include <linux/i2c/pca954x.h> @@ -34,6 +33,7 @@ #define PLUTO_POWER_REWORKED_CONFIG 0x10 enum { + PM_VDD_CELL, UNUSED_RAIL, }; @@ -59,8 +59,49 @@ enum { VDDIO_1V8_BB, }; -static struct ina219_platform_data power_mon_info_0[] = { - /* All unused INA219 devices use below data*/ +static struct ina230_platform_data power_mon_info_0[] = { + [PM_VDD_CELL] = { + /* + * Calibration data is calculated by: + * Imax = 6A (max peak current from battery) + * Current_LSB = Imax / 2^15 + * = 0.000183 + * ~= 0.0002(A per bit) + * + * Rshunt (on Pluto) = 0.01(Ohm) + * cal = 0.00512 / (Current_LSB * Rshunt) + * = 0.00512 / (0.0002 * 0.01) + * = 2560 + */ + .calibration_data = 2560, + .rail_name = "PM_VDD_CELL", + /* + * Current_LSB is 0.0002A per bit (0.2mA per bit), and we use mA + * as display as unit: + * current_lsb = 0.2 + * power_lsb = current_lsb * POWER_LSB_TO_CURRENT_LSB_RATIO + * = 0.2 * 25 = 5 + * + */ + .divisor = POWER_LSB_TO_CURRENT_LSB_RATIO, + .power_lsb = 5, + .precision_multiplier = 1, + /* + * this value specify the battery in-serial resistor value in + * the unit of mOhm. + */ + .resistor = 10, + .shunt_polarity_inverted = 1, + /* + * INA230's alert pin can be used to generate the OC throttling + * signal to AP. To do so set the 'current_threshold' to a + * non-zero value in the unit of mA; set it to 0 will disable + * the alert pin generating OC + * signal. + */ + .current_threshold = 0, + }, + /* All unused HPA01112 devices use below data*/ [UNUSED_RAIL] = { .calibration_data = 0x369c, .power_lsb = 3.051979018 * PRECISION_MULTIPLIER_PLUTO, @@ -232,27 +273,27 @@ enum { INA_I2C_2_2_ADDR_4C, }; -static struct i2c_board_info pluto_i2c2_0_ina219_board_info[] = { +static struct i2c_board_info pluto_i2c2_0_ina230_board_info[] = { [INA_I2C_2_0_ADDR_40] = { - I2C_BOARD_INFO("ina219", 0x40), - .platform_data = &power_mon_info_0[UNUSED_RAIL], + I2C_BOARD_INFO("ina230", 0x40), + .platform_data = &power_mon_info_0[PM_VDD_CELL], .irq = -1, }, [INA_I2C_2_0_ADDR_41] = { - I2C_BOARD_INFO("ina219", 0x41), + I2C_BOARD_INFO("ina230", 0x41), .platform_data = &power_mon_info_0[UNUSED_RAIL], .irq = -1, }, [INA_I2C_2_0_ADDR_42] = { - I2C_BOARD_INFO("ina219", 0x42), + I2C_BOARD_INFO("ina230", 0x42), .platform_data = &power_mon_info_0[UNUSED_RAIL], .irq = -1, }, [INA_I2C_2_0_ADDR_43] = { - I2C_BOARD_INFO("ina219", 0x43), + I2C_BOARD_INFO("ina230", 0x43), .platform_data = &power_mon_info_0[UNUSED_RAIL], .irq = -1, }, @@ -434,8 +475,8 @@ int __init pluto_pmon_init(void) ARRAY_SIZE(pluto_i2c2_board_info)); i2c_register_board_info(PCA954x_I2C_BUS0, - pluto_i2c2_0_ina219_board_info, - ARRAY_SIZE(pluto_i2c2_0_ina219_board_info)); + pluto_i2c2_0_ina230_board_info, + ARRAY_SIZE(pluto_i2c2_0_ina230_board_info)); i2c_register_board_info(PCA954x_I2C_BUS1, pluto_i2c2_1_ina230_board_info, diff --git a/include/linux/platform_data/ina230.h b/include/linux/platform_data/ina230.h index b5d4f8fa9ec8..ebd502f23b44 100644 --- a/include/linux/platform_data/ina230.h +++ b/include/linux/platform_data/ina230.h @@ -24,6 +24,7 @@ #define INA3221_RAIL_NAME_SIZE 32 +#define POWER_LSB_TO_CURRENT_LSB_RATIO 25 struct ina230_platform_data { const char rail_name[INA3221_RAIL_NAME_SIZE]; s32 current_threshold; |