On 16 April 2019 21:08, Hans de Goede wrote:
> When in single-role port mode, we must start single-role toggling to
> get an interrupt when a device / cable gets plugged into the port.
>
> This commit modifies the fusb302 start_toggling implementation to
> start toggling for all port-types, so that connection-detection works
> on single-role ports too.
>
> Fixes: ea3b4d5523bc("usb: typec: fusb302: Resolve fixed power role ...")
> Cc: Adam Thomson <[email protected]>
> Signed-off-by: Hans de Goede <[email protected]>
For DRP & Sink only toggling scenarios, with FUSB302 TCPC:
Tested-by: Adam Thomson <[email protected]>
> ---
> Changes in v2:
> -Adjust for the tcpm core renaming start_drp_toggling to start_toggling,
> instead of adding a new start_srp_connection_detect callback
> ---
> drivers/usb/typec/tcpm/fusb302.c | 16 +++++++++++++---
> 1 file changed, 13 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/usb/typec/tcpm/fusb302.c
> b/drivers/usb/typec/tcpm/fusb302.c
> index 6d83891cc895..ba030b03d156 100644
> --- a/drivers/usb/typec/tcpm/fusb302.c
> +++ b/drivers/usb/typec/tcpm/fusb302.c
> @@ -882,10 +882,20 @@ static int tcpm_start_toggling(struct tcpc_dev *dev,
> {
> struct fusb302_chip *chip = container_of(dev, struct fusb302_chip,
> tcpc_dev);
> + enum toggling_mode mode = TOGGLING_MODE_OFF;
> int ret = 0;
>
> - if (port_type != TYPEC_PORT_DRP)
> - return -EOPNOTSUPP;
> + switch (port_type) {
> + case TYPEC_PORT_SRC:
> + mode = TOGGLING_MODE_SRC;
> + break;
> + case TYPEC_PORT_SNK:
> + mode = TOGGLING_MODE_SNK;
> + break;
> + case TYPEC_PORT_DRP:
> + mode = TOGGLING_MODE_DRP;
> + break;
> + }
>
> mutex_lock(&chip->lock);
> ret = fusb302_set_src_current(chip, cc_src_current[cc]);
> @@ -894,7 +904,7 @@ static int tcpm_start_toggling(struct tcpc_dev *dev,
> typec_cc_status_name[cc], ret);
> goto done;
> }
> - ret = fusb302_set_toggling(chip, TOGGLING_MODE_DRP);
> + ret = fusb302_set_toggling(chip, mode);
> if (ret < 0) {
> fusb302_log(chip,
> "unable to start drp toggling, ret=%d", ret);
> --
> 2.21.0
