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| author | Hans de Goede | 2017-08-30 11:48:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2017-08-31 18:23:12 +0200 |
| commit | ea62cfc71b6f7f0ae9bb93b60335a6dedcaa69e6 (patch) | |
| tree | c8a50973e5ac8cfaa216e234b5961d6220b21448 /drivers/staging/typec/tcpm.c | |
| parent | staging:rtl8188eu Use __func__ instead of function name (diff) | |
| download | kernel-qcow2-linux-ea62cfc71b6f7f0ae9bb93b60335a6dedcaa69e6.tar.gz kernel-qcow2-linux-ea62cfc71b6f7f0ae9bb93b60335a6dedcaa69e6.tar.xz kernel-qcow2-linux-ea62cfc71b6f7f0ae9bb93b60335a6dedcaa69e6.zip | |
staging: typec: tcpm: Add get_current_limit tcpc_dev callback
A Rp signalling the default current limit indicates that we're possibly
connected to an USB2 power-source. In some cases the type-c port-controller
may provide the capability to detect the current-limit in this case,
through e.g. BC1.2 detection.
This commit adds an optional get_current_limit tcpc_dev callback which
allows the port-controller to provide current-limit detection for when
the CC pin is pulled up with Rp.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/typec/tcpm.c')
| -rw-r--r-- | drivers/staging/typec/tcpm.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/staging/typec/tcpm.c b/drivers/staging/typec/tcpm.c index 2ce02aba039a..8af62e74d54c 100644 --- a/drivers/staging/typec/tcpm.c +++ b/drivers/staging/typec/tcpm.c @@ -685,7 +685,10 @@ static u32 tcpm_get_current_limit(struct tcpm_port *port) break; case TYPEC_CC_RP_DEF: default: - limit = 0; + if (port->tcpc->get_current_limit) + limit = port->tcpc->get_current_limit(port->tcpc); + else + limit = 0; break; } |