diff options
| author | Badhri Jagan Sridharan <badhri@google.com> | 2017-08-28 10:23:21 -0700 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:41:33 +0300 |
| commit | 0e04e85b9289fd064ffa6f6ee0cd44bd0f88c40b (patch) | |
| tree | 770ffe8673b023070432c1ef44af1a732d9df548 /drivers/staging | |
| parent | ea89fe9e9e2c91aa81158a1062c203aae3b89869 (diff) | |
staging: typec: tcpm: Do not send PING msgs in TCPM
PING messages are used to monitor the connect/disconnect.
However, when PD is carried over CC, so this is not required.
Also, the spec does not clearly say if PD is possible when
Type-c is connected to Type-A/B. So, removing sending
PING messages altogether.
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit f451ac9e4c6dd2c9ee5397a28a60084fc77f63d7)
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/typec/tcpm.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/staging/typec/tcpm.c b/drivers/staging/typec/tcpm.c index 1f2fc7351d38..aa63ec225d9c 100644 --- a/drivers/staging/typec/tcpm.c +++ b/drivers/staging/typec/tcpm.c @@ -2317,14 +2317,11 @@ static void run_state_machine(struct tcpm_port *port) * - The system is not operating in PD mode * or * - Both partners are connected using a Type-C connector - * XXX How do we know that ? + * + * There is no actual need to send PD messages since the local + * port type-c and the spec does not clearly say whether PD is + * possible when type-c is connected to Type-A/B */ - if (port->pwr_opmode == TYPEC_PWR_MODE_PD && - !port->op_vsafe5v) { - tcpm_pd_send_control(port, PD_CTRL_PING); - tcpm_set_state_cond(port, SRC_READY, - PD_T_SOURCE_ACTIVITY); - } break; case SRC_WAIT_NEW_CAPABILITIES: /* Nothing to do... */ |