The EC can expose a CEC bus, thus add the cros-ec-cec MFD sub-device when the CEC feature bit is present.
Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- drivers/mfd/cros_ec_dev.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c index eafd06f..57064ec 100644 --- a/drivers/mfd/cros_ec_dev.c +++ b/drivers/mfd/cros_ec_dev.c @@ -383,6 +383,18 @@ static void cros_ec_sensors_register(struct cros_ec_dev *ec) kfree(msg); }
+static void cros_ec_cec_register(struct cros_ec_dev *ec) +{ + int ret; + struct mfd_cell cec_cell = { + .name = "cros-ec-cec", + }; + + ret = mfd_add_devices(ec->dev, 0, &cec_cell, 1, NULL, 0, NULL); + if (ret) + dev_err(ec->dev, "failed to add EC CEC\n"); +} + static int ec_device_probe(struct platform_device *pdev) { int retval = -ENOMEM; @@ -422,6 +434,10 @@ static int ec_device_probe(struct platform_device *pdev) if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE)) cros_ec_sensors_register(ec);
+ /* check whether this EC handles CEC. */ + if (cros_ec_check_features(ec, EC_FEATURE_CEC)) + cros_ec_cec_register(ec); + /* Take control of the lightbar from the EC. */ lb_manual_suspend_ctrl(ec, 1);