1 files changed, 67 insertions, 10 deletions

diff --git a/drivers/power/twl6030.c b/drivers/power/twl6030.c
index 0858b60..a1c6663 100644
--- a/drivers/power/twl6030.c
+++ b/drivers/power/twl6030.c
@@ -9,6 +9,26 @@
 
 #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 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;
@@ -16,12 +36,12 @@ 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 +53,8 @@ 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 +62,8 @@ 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);
@@ -102,6 +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();
@@ -111,12 +145,12 @@ 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;
 	}
-	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;
@@ -124,12 +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;
 
+	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);
@@ -146,10 +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;