@@ -211,6 +211,7 @@ struct imx_i2c_struct {
struct imx_i2c_dma *dma;
struct i2c_client *slave;
+ enum i2c_slave_event last_slave_event;
};
static const struct imx_i2c_hwdata imx1_i2c_hwdata = {
@@ -637,6 +638,36 @@ static void i2c_imx_enable_bus_idle(struct
imx_i2c_struct *i2c_imx)
}
}
+static void i2c_imx_slave_event(struct imx_i2c_struct *i2c_imx,
+ enum i2c_slave_event event, u8 *val)
+{
+ i2c_slave_event(i2c_imx->slave, event, val);
+ i2c_imx->last_slave_event = event;
+}
+
+static void i2c_imx_slave_finish_op(struct imx_i2c_struct *i2c_imx)
+{
+ u8 val;
+
+ while (i2c_imx->last_slave_event != I2C_SLAVE_STOP) {
+ switch (i2c_imx->last_slave_event) {
+ case I2C_SLAVE_READ_REQUESTED:
+ i2c_imx_slave_event(i2c_imx, I2C_SLAVE_READ_PROCESSED,
+ &val);
+ break;
+
+ case I2C_SLAVE_WRITE_REQUESTED:
+ case I2C_SLAVE_READ_PROCESSED:
+ case I2C_SLAVE_WRITE_RECEIVED:
+ i2c_imx_slave_event(i2c_imx, I2C_SLAVE_STOP, &val);
+ break;
+
+ case I2C_SLAVE_STOP:
+ break;
+ }
+ }
+}
+
static irqreturn_t i2c_imx_slave_isr(struct imx_i2c_struct *i2c_imx,
unsigned int status, unsigned int ctl)