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-rw-r--r--hw/i2c/core.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/hw/i2c/core.c b/hw/i2c/core.c
index 6639ca8c2e..5483bf95a3 100644
--- a/hw/i2c/core.c
+++ b/hw/i2c/core.c
@@ -114,8 +114,11 @@ bool i2c_scan_bus(I2CBus *bus, uint8_t address, bool broadcast,
* protocol uses a start transfer to switch from write to read mode
* without releasing the bus. If that fails, the bus is still
* in a transaction.
+ *
+ * @event must be I2C_START_RECV or I2C_START_SEND.
*/
-int i2c_start_transfer(I2CBus *bus, uint8_t address, bool is_recv)
+static int i2c_do_start_transfer(I2CBus *bus, uint8_t address,
+ enum i2c_event event)
{
I2CSlaveClass *sc;
I2CNode *node;
@@ -157,7 +160,7 @@ int i2c_start_transfer(I2CBus *bus, uint8_t address, bool is_recv)
if (sc->event) {
trace_i2c_event("start", s->address);
- rv = sc->event(s, is_recv ? I2C_START_RECV : I2C_START_SEND);
+ rv = sc->event(s, event);
if (rv && !bus->broadcast) {
if (bus_scanned) {
/* First call, terminate the transfer. */
@@ -170,6 +173,13 @@ int i2c_start_transfer(I2CBus *bus, uint8_t address, bool is_recv)
return 0;
}
+int i2c_start_transfer(I2CBus *bus, uint8_t address, bool is_recv)
+{
+ return i2c_do_start_transfer(bus, address, is_recv
+ ? I2C_START_RECV
+ : I2C_START_SEND);
+}
+
void i2c_end_transfer(I2CBus *bus)
{
I2CSlaveClass *sc;