On 05/15/2018 04:42 PM, Neil Armstrong wrote:
> 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@xxxxxxxxxxxx>
For what it is worth (not an MFD expert):
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Thanks!
Hans
> ---
> 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);
>
>
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