@@ -203,7 +203,7 @@ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *bus, uint64_t value)
bus->cmd &= ~I2CD_M_TX_CMD;
}
- if (bus->cmd & I2CD_M_RX_CMD) {
+ if (bus->cmd & (I2CD_M_RX_CMD | I2CD_M_S_RX_CMD_LAST)) {
int ret = i2c_recv(bus->bus);
if (ret < 0) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: read failed\n", __func__);
@@ -212,10 +212,13 @@ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *bus, uint64_t value)
bus->intr_status |= I2CD_INTR_RX_DONE;
}
bus->buf = (ret & I2CD_BYTE_BUF_RX_MASK) << I2CD_BYTE_BUF_RX_SHIFT;
- bus->cmd &= ~I2CD_M_RX_CMD;
+ if (bus->cmd & I2CD_M_S_RX_CMD_LAST) {
+ i2c_nack(bus->bus);
+ }
+ bus->cmd &= ~(I2CD_M_RX_CMD | I2CD_M_S_RX_CMD_LAST);
}
- if (bus->cmd & (I2CD_M_STOP_CMD | I2CD_M_S_RX_CMD_LAST)) {
+ if (bus->cmd & I2CD_M_STOP_CMD) {
if (!i2c_bus_busy(bus->bus)) {
bus->intr_status |= I2CD_INTR_ABNORMAL;
} else {
Today, the LAST command is handled with the STOP command but this is incorrect. Also nack the I2C bus when a LAST is issued. Signed-off-by: Cédric Le Goater <clg@kaod.org> --- hw/i2c/aspeed_i2c.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)