From: Oleg Kosheliev oleg.kosheliev@ti.com

The data struct is used to support different PMIC chip types. It contains the chip type and the data (e.g. registers addresses, adc multiplier) which is different for twl6030 and twl6032. Replaced some hardcoded values with the structure vars.

Based on Balaji T K balajitk@ti.com patches for TI u-boot.

Signed-off-by: Oleg Kosheliev oleg.kosheliev@ti.com --- drivers/power/twl6030.c | 25 ++++++++++++++++++++----- include/twl6030.h | 18 ++++++++++++++++++ 2 files changed, 38 insertions(+), 5 deletions(-)

diff --git a/drivers/power/twl6030.c b/drivers/power/twl6030.c index 0858b60..6bf1a33 100644 --- a/drivers/power/twl6030.c +++ b/drivers/power/twl6030.c @@ -9,6 +9,17 @@

#include <twl6030.h>

+static struct twl6030_data *twl; + +static struct twl6030_data twl6030_info = { + .chip_type = chip_TWL6030, + .adc_rbase = GPCH0_LSB, + .adc_ctrl = CTRL_P2, + .adc_enable = CTRL_P2_SP2, + .vbat_mult = TWL6030_VBAT_MULT, + .vbat_shift = TWL6030_VBAT_SHIFT, +}; + static int twl6030_gpadc_read_channel(u8 channel_no) { u8 lsb = 0; @@ -16,12 +27,12 @@ static int twl6030_gpadc_read_channel(u8 channel_no) int ret = 0;

ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC, - GPCH0_LSB + channel_no * 2, &lsb); + twl->adc_rbase + channel_no * 2, &lsb); if (ret) return ret;

ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC, - GPCH0_MSB + channel_no * 2, &msb); + twl->adc_rbase + 1 + channel_no * 2, &msb); if (ret) return ret;

@@ -33,7 +44,8 @@ static int twl6030_gpadc_sw2_trigger(void) u8 val; int ret = 0;

- ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC, CTRL_P2, CTRL_P2_SP2); + ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC, + twl->adc_ctrl, twl->adc_enable); if (ret) return ret;

@@ -41,7 +53,8 @@ static int twl6030_gpadc_sw2_trigger(void) val = CTRL_P2_BUSY;

while (!((val & CTRL_P2_EOCP2) && (!(val & CTRL_P2_BUSY)))) { - ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC, CTRL_P2, &val); + ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC, + twl->adc_ctrl, &val); if (ret) return ret; udelay(1000); @@ -116,7 +129,7 @@ int twl6030_get_battery_voltage(void) printf("Failed to read battery voltage\n"); return ret; } - battery_volt = (battery_volt * 25 * 1000) >> (10 + 2); + battery_volt = (battery_volt * twl->vbat_mult) >> twl->vbat_shift; printf("Battery Voltage: %d mV\n", battery_volt);

return battery_volt; @@ -128,6 +141,8 @@ void twl6030_init_battery_charging(void) int battery_volt = 0; int ret = 0;

+ twl = &twl6030_info; + /* Enable VBAT measurement */ twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS);

diff --git a/include/twl6030.h b/include/twl6030.h index b4035ba..9399737 100644 --- a/include/twl6030.h +++ b/include/twl6030.h @@ -113,6 +113,24 @@ #define GPCH0_LSB 0x57 #define GPCH0_MSB 0x58

+#define TWL6030_VBAT_MULT 40 * 1000 + +#define TWL6030_VBAT_SHIFT (10 + 3) + +enum twl603x_chip_type{ + chip_TWL6030, + chip_TWL603X_cnt +}; + +struct twl6030_data{ + u8 chip_type; + u8 adc_rbase; + u8 adc_ctrl; + u8 adc_enable; + int vbat_mult; + int vbat_shift; +}; + /* Functions to read and write from TWL6030 */ static inline int twl6030_i2c_write_u8(u8 chip_no, u8 reg, u8 val) {

From: Oleg Kosheliev oleg.kosheliev@ti.com

Added chip type detection and twl6032 support in the battery control and charge functions.

Based on Balaji T K balajitk@ti.com patches for TI u-boot.

Signed-off-by: Oleg Kosheliev oleg.kosheliev@ti.com --- drivers/power/twl6030.c | 54 +++++++++++++++++++++++++++++++++++++++++------ include/twl6030.h | 20 ++++++++++++++++++ 2 files changed, 68 insertions(+), 6 deletions(-)

diff --git a/drivers/power/twl6030.c b/drivers/power/twl6030.c index 6bf1a33..a1c6663 100644 --- a/drivers/power/twl6030.c +++ b/drivers/power/twl6030.c @@ -20,6 +20,15 @@ static struct twl6030_data twl6030_info = { .vbat_shift = TWL6030_VBAT_SHIFT, };

+static struct twl6030_data twl6032_info = { + .chip_type = chip_TWL6032, + .adc_rbase = TWL6032_GPCH0_LSB, + .adc_ctrl = TWL6032_CTRL_P1, + .adc_enable = CTRL_P1_SP1, + .vbat_mult = TWL6032_VBAT_MULT, + .vbat_shift = TWL6032_VBAT_SHIFT, +}; + static int twl6030_gpadc_read_channel(u8 channel_no) { u8 lsb = 0; @@ -115,6 +124,18 @@ int twl6030_get_battery_voltage(void) { int battery_volt = 0; int ret = 0; + u8 vbatch; + + if (twl->chip_type == chip_TWL6030) { + vbatch = TWL6030_GPADC_VBAT_CHNL; + } else { + ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC, + TWL6032_GPSELECT_ISB, + TWL6032_GPADC_VBAT_CHNL); + if (ret) + return ret; + vbatch = 0; + }

/* Start GPADC SW conversion */ ret = twl6030_gpadc_sw2_trigger(); @@ -124,7 +145,7 @@ int twl6030_get_battery_voltage(void) }

/* measure Vbat voltage */ - battery_volt = twl6030_gpadc_read_channel(7); + battery_volt = twl6030_gpadc_read_channel(vbatch); if (battery_volt < 0) { printf("Failed to read battery voltage\n"); return ret; @@ -137,14 +158,35 @@ int twl6030_get_battery_voltage(void)

void twl6030_init_battery_charging(void) { - u8 stat1 = 0; + u8 val = 0; int battery_volt = 0; int ret = 0;

- twl = &twl6030_info; + ret = twl6030_i2c_read_u8(TWL6030_CHIP_USB, USB_PRODUCT_ID_LSB, &val); + if (ret) { + puts("twl6030_init_battery_charging(): could not determine chip!\n"); + return; + } + if (val == 0x30) { + twl = &twl6030_info; + } else if (val == 0x32) { + twl = &twl6032_info; + } else { + puts("twl6030_init_battery_charging(): unsupported chip type\n"); + return; + }

/* Enable VBAT measurement */ - twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS); + if (twl->chip_type == chip_TWL6030) { + twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS); + twl6030_i2c_write_u8(TWL6030_CHIP_ADC, + TWL6030_GPADC_CTRL, + GPADC_CTRL_SCALER_DIV4); + } else { + twl6030_i2c_write_u8(TWL6030_CHIP_ADC, + TWL6032_GPADC_CTRL2, + GPADC_CTRL2_CH18_SCALER_EN); + }

/* Enable GPADC module */ ret = twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, TOGGLE1, FGS | GPADCS); @@ -161,10 +203,10 @@ void twl6030_init_battery_charging(void) printf("Main battery voltage too low!\n");

/* Check for the presence of USB charger */ - twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, CONTROLLER_STAT1, &stat1); + twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, CONTROLLER_STAT1, &val);

/* check for battery presence indirectly via Fuel gauge */ - if ((stat1 & VBUS_DET) && (battery_volt < 3300)) + if ((val & VBUS_DET) && (battery_volt < 3300)) twl6030_start_usb_charging();

return; diff --git a/include/twl6030.h b/include/twl6030.h index 9399737..7898699 100644 --- a/include/twl6030.h +++ b/include/twl6030.h @@ -110,15 +110,35 @@ #define CTRL_P2_EOCP2 (1 << 1) #define CTRL_P2_BUSY (1 << 0)

+#define TWL6032_CTRL_P1 0x36 +#define CTRL_P1_SP1 (1 << 3) + #define GPCH0_LSB 0x57 #define GPCH0_MSB 0x58

+#define TWL6032_GPCH0_LSB 0x3b + +#define TWL6032_GPSELECT_ISB 0x35 + +#define USB_PRODUCT_ID_LSB 0x02 + +#define TWL6030_GPADC_VBAT_CHNL 0x07 +#define TWL6032_GPADC_VBAT_CHNL 0x12 + +#define TWL6030_GPADC_CTRL 0x2e +#define TWL6032_GPADC_CTRL2 0x2f +#define GPADC_CTRL2_CH18_SCALER_EN (1 << 2) +#define GPADC_CTRL_SCALER_DIV4 (1 << 3) + #define TWL6030_VBAT_MULT 40 * 1000 +#define TWL6032_VBAT_MULT 25 * 1000

#define TWL6030_VBAT_SHIFT (10 + 3) +#define TWL6032_VBAT_SHIFT (12 + 2)

enum twl603x_chip_type{ chip_TWL6030, + chip_TWL6032, chip_TWL603X_cnt };