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platform/chrome: cros_ec_typec: Register port partner 

Register (and unregister) the port partner when a connect (and
disconnect) is detected.

Co-developed-by: Jon Flatley <jflat@chromium.org>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
This commit is contained in:
Prashant Malani 2020-04-14 22:29:43 -07:00 committed by Enric Balletbo i Serra
parent 5fed73b84f
commit 9d33ea3310
1 changed files with 48 additions and 0 deletions
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48
drivers/platform/chrome/cros_ec_typec.c
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@ -22,6 +22,9 @@ struct cros_typec_port {
struct typec_port *port;
/* Initial capabilities for the port. */
struct typec_capability caps;
struct typec_partner *partner;
/* Port partner PD identity info. */
struct usb_pd_identity p_identity;
};
/* Platform-specific data for the Chrome OS EC Type C controller. */
@ -190,6 +193,30 @@ static int cros_typec_ec_command(struct cros_typec_data *typec,
return ret;
}
static int cros_typec_add_partner(struct cros_typec_data *typec, int port_num,
bool pd_en)
{
struct cros_typec_port *port = typec->ports[port_num];
struct typec_partner_desc p_desc = {
.usb_pd = pd_en,
};
int ret = 0;
/*
* Fill an initial PD identity, which will then be updated with info
* from the EC.
*/
p_desc.identity = &port->p_identity;
port->partner = typec_register_partner(port->port, &p_desc);
if (IS_ERR(port->partner)) {
ret = PTR_ERR(port->partner);
port->partner = NULL;
}
return ret;
}
static void cros_typec_set_port_params_v0(struct cros_typec_data *typec,
int port_num, struct ec_response_usb_pd_control *resp)
{
@ -212,6 +239,8 @@ static void cros_typec_set_port_params_v1(struct cros_typec_data *typec,
{
struct typec_port *port = typec->ports[port_num]->port;
enum typec_orientation polarity;
bool pd_en;
int ret;
if (!(resp->enabled & PD_CTRL_RESP_ENABLED_CONNECTED))
polarity = TYPEC_ORIENTATION_NONE;
@ -226,6 +255,25 @@ static void cros_typec_set_port_params_v1(struct cros_typec_data *typec,
TYPEC_SOURCE : TYPEC_SINK);
typec_set_vconn_role(port, resp->role & PD_CTRL_RESP_ROLE_VCONN ?
TYPEC_SOURCE : TYPEC_SINK);
/* Register/remove partners when a connect/disconnect occurs. */
if (resp->enabled & PD_CTRL_RESP_ENABLED_CONNECTED) {
if (typec->ports[port_num]->partner)
return;
pd_en = resp->enabled & PD_CTRL_RESP_ENABLED_PD_CAPABLE;
ret = cros_typec_add_partner(typec, port_num, pd_en);
if (!ret)
dev_warn(typec->dev,
"Failed to register partner on port: %d\n",
port_num);
} else {
if (!typec->ports[port_num]->partner)
return;
typec_unregister_partner(typec->ports[port_num]->partner);
typec->ports[port_num]->partner = NULL;
}
}
static int cros_typec_port_update(struct cros_typec_data *typec, int port_num)