@@ -965,6 +965,7 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
int status;
unsigned i;
struct twl4030_platform_data *pdata = client->dev.platform_data;
+ u8 temp;
if (!pdata) {
dev_dbg(&client->dev, "no platform data?\n");
@@ -1032,6 +1033,18 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
goto fail;
}
+ /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
+ * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
+ * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
+ */
+
+ if (twl_class_is_4030()) {
+ twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
+ temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
+ I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
+ twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
+ }
+
status = add_children(pdata, id->driver_data);
fail:
if (status < 0)
@@ -239,6 +239,21 @@ int twl6030_interrupt_mask(u8 bit_mask, u8 offset);
/*----------------------------------------------------------------------*/
+/*Interface Bit Register (INTBR) offsets
+ *(Use TWL_4030_MODULE_INTBR)
+ */
+
+#define REG_GPPUPDCTR1 0x0F
+
+/*I2C1 and I2C4(SR) SDA/SCL pull-up control bits */
+
+#define I2C_SCL_CTRL_PU BIT(0)
+#define I2C_SDA_CTRL_PU BIT(2)
+#define SR_I2C_SCL_CTRL_PU BIT(4)
+#define SR_I2C_SDA_CTRL_PU BIT(6)
+
+/*----------------------------------------------------------------------*/
+
/*
* Keypad register offsets (use TWL4030_MODULE_KEYPAD)
* ... SIH/interrupt only