*/
static int tegra_bpmp_xlate_flags(u16 flags, u16 *out)
{
- if (flags & I2C_M_TEN) {
+ if (flags & I2C_M_TEN)
*out |= SERIALI2C_TEN;
- flags &= ~I2C_M_TEN;
- }
- if (flags & I2C_M_RD) {
+ if (flags & I2C_M_RD)
*out |= SERIALI2C_RD;
- flags &= ~I2C_M_RD;
- }
- if (flags & I2C_M_STOP) {
+ if (flags & I2C_M_STOP)
*out |= SERIALI2C_STOP;
- flags &= ~I2C_M_STOP;
- }
- if (flags & I2C_M_NOSTART) {
+ if (flags & I2C_M_NOSTART)
*out |= SERIALI2C_NOSTART;
- flags &= ~I2C_M_NOSTART;
- }
- if (flags & I2C_M_REV_DIR_ADDR) {
+ if (flags & I2C_M_REV_DIR_ADDR)
*out |= SERIALI2C_REV_DIR_ADDR;
- flags &= ~I2C_M_REV_DIR_ADDR;
- }
- if (flags & I2C_M_IGNORE_NAK) {
+ if (flags & I2C_M_IGNORE_NAK)
*out |= SERIALI2C_IGNORE_NAK;
- flags &= ~I2C_M_IGNORE_NAK;
- }
- if (flags & I2C_M_NO_RD_ACK) {
+ if (flags & I2C_M_NO_RD_ACK)
*out |= SERIALI2C_NO_RD_ACK;
- flags &= ~I2C_M_NO_RD_ACK;
- }
- if (flags & I2C_M_RECV_LEN) {
+ if (flags & I2C_M_RECV_LEN)
*out |= SERIALI2C_RECV_LEN;
- flags &= ~I2C_M_RECV_LEN;
- }
return 0;
}
else
err = tegra_bpmp_transfer(i2c->bpmp, &msg);
- return err;
+ if (err < 0) {
+ dev_err(i2c->dev, "failed to transfer message: %d\n", err);
+ return err;
+ }
+
+ if (msg.rx.ret != 0) {
+ if (msg.rx.ret == -BPMP_EAGAIN) {
+ dev_dbg(i2c->dev, "arbitration lost\n");
+ return -EAGAIN;
+ }
+
+ if (msg.rx.ret == -BPMP_ETIMEDOUT) {
+ dev_dbg(i2c->dev, "timeout\n");
+ return -ETIMEDOUT;
+ }
+
+ if (msg.rx.ret == -BPMP_ENXIO) {
+ dev_dbg(i2c->dev, "NAK\n");
+ return -ENXIO;
+ }
+
+ dev_err(i2c->dev, "transaction failed: %d\n", msg.rx.ret);
+ return -EIO;
+ }
+
+ return 0;
}
static int tegra_bpmp_i2c_xfer_common(struct i2c_adapter *adapter,