The port type callback call enquires the tcpc_dev if
the requested port type is supported. If supported, then
performs a tcpm reset if required after setting the tcpm
internal port_type variable.
Check against the tcpm port_type instead of checking
against caps.type as port_type reflects the current
configuration.
Signed-off-by: Badhri Jagan Sridharan <bad...@google.com>
Reviewed-by: Guenter Roeck <li...@roeck-us.net>
---
Changelog since v1:
- Corrected tag
Changelog since v2:
- added Reviewed-by: Guenter Roeck <li...@roeck-us.net>
- fixed version/sequence numbers
drivers/staging/typec/tcpm.c | 52 ++++++++++++++++++++++++++++++++++----------
1 file changed, 41 insertions(+), 11 deletions(-)
diff --git a/drivers/staging/typec/tcpm.c b/drivers/staging/typec/tcpm.c
index a911cad41a59..6c045ac9c42a 100644
--- a/drivers/staging/typec/tcpm.c
+++ b/drivers/staging/typec/tcpm.c
@@ -197,6 +197,7 @@ struct tcpm_port {
bool attached;
bool connected;
+ enum typec_port_type port_type;
bool vbus_present;
bool vbus_never_low;
bool vbus_source;
@@ -334,7 +335,7 @@ struct pd_rx_event {
static enum tcpm_state tcpm_default_state(struct tcpm_port *port)
{
- if (port->typec_caps.type == TYPEC_PORT_DRP) {
+ if (port->port_type == TYPEC_PORT_DRP) {
if (port->try_role == TYPEC_SINK)
return SNK_UNATTACHED;
else if (port->try_role == TYPEC_SOURCE)
@@ -342,7 +343,7 @@ static enum tcpm_state tcpm_default_state(struct tcpm_port
*port)
else if (port->tcpc->config->default_role == TYPEC_SINK)
return SNK_UNATTACHED;
/* Fall through to return SRC_UNATTACHED */
- } else if (port->typec_caps.type == TYPEC_PORT_UFP) {
+ } else if (port->port_type == TYPEC_PORT_UFP) {
return SNK_UNATTACHED;
}
return SRC_UNATTACHED;
@@ -1458,7 +1459,7 @@ static void tcpm_pd_ctrl_request(struct tcpm_port *port,
tcpm_set_state(port, SOFT_RESET, 0);
break;
case PD_CTRL_DR_SWAP:
- if (port->typec_caps.type != TYPEC_PORT_DRP) {
+ if (port->port_type != TYPEC_PORT_DRP) {
tcpm_queue_message(port, PD_MSG_CTRL_REJECT);
break;
}
@@ -1478,7 +1479,7 @@ static void tcpm_pd_ctrl_request(struct tcpm_port *port,
}
break;
case PD_CTRL_PR_SWAP:
- if (port->typec_caps.type != TYPEC_PORT_DRP) {
+ if (port->port_type != TYPEC_PORT_DRP) {
tcpm_queue_message(port, PD_MSG_CTRL_REJECT);
break;
}
@@ -1853,7 +1854,7 @@ static bool tcpm_start_drp_toggling(struct tcpm_port
*port)
int ret;
if (port->tcpc->start_drp_toggling &&
- port->typec_caps.type == TYPEC_PORT_DRP) {
+ port->port_type == TYPEC_PORT_DRP) {
tcpm_log_force(port, "Start DRP toggling");
ret = port->tcpc->start_drp_toggling(port->tcpc,
tcpm_rp_cc(port));
@@ -2163,7 +2164,7 @@ static void run_state_machine(struct tcpm_port *port)
break;
}
tcpm_set_cc(port, tcpm_rp_cc(port));
- if (port->typec_caps.type == TYPEC_PORT_DRP)
+ if (port->port_type == TYPEC_PORT_DRP)
tcpm_set_state(port, SNK_UNATTACHED, PD_T_DRP_SNK);
break;
case SRC_ATTACH_WAIT:
@@ -2320,7 +2321,7 @@ static void run_state_machine(struct tcpm_port *port)
break;
}
tcpm_set_cc(port, TYPEC_CC_RD);
- if (port->typec_caps.type == TYPEC_PORT_DRP)
+ if (port->port_type == TYPEC_PORT_DRP)
tcpm_set_state(port, SRC_UNATTACHED, PD_T_DRP_SRC);
break;
case SNK_ATTACH_WAIT:
@@ -2411,7 +2412,7 @@ static void run_state_machine(struct tcpm_port *port)
* see USB power delivery specification, section 8.3.3.6.1.5.1).
*/
tcpm_set_state(port, hard_reset_state(port),
- port->typec_caps.type == TYPEC_PORT_DRP ?
+ port->port_type == TYPEC_PORT_DRP ?
PD_T_DB_DETECT : PD_T_NO_RESPONSE);
break;
case SNK_DISCOVERY_DEBOUNCE:
@@ -3167,7 +3168,7 @@ static int tcpm_dr_set(const struct typec_capability *cap,
mutex_lock(&port->swap_lock);
mutex_lock(&port->lock);
- if (port->typec_caps.type != TYPEC_PORT_DRP) {
+ if (port->port_type != TYPEC_PORT_DRP) {
ret = -EINVAL;
goto port_unlock;
}
@@ -3235,7 +3236,7 @@ static int tcpm_pr_set(const struct typec_capability *cap,
mutex_lock(&port->swap_lock);
mutex_lock(&port->lock);
- if (port->typec_caps.type != TYPEC_PORT_DRP) {
+ if (port->port_type != TYPEC_PORT_DRP) {
ret = -EINVAL;
goto port_unlock;
}
@@ -3357,6 +3358,34 @@ static void tcpm_init(struct tcpm_port *port)
tcpm_set_state(port, PORT_RESET, 0);
}
+static int tcpm_port_type_set(const struct typec_capability *cap,
+ enum typec_port_type type)
+{
+ struct tcpm_port *port = typec_cap_to_tcpm(cap);
+
+ mutex_lock(&port->lock);
+ if (type == port->port_type)
+ goto port_unlock;
+
+ port->port_type = type;
+
+ if (!port->connected) {
+ tcpm_set_state(port, PORT_RESET, 0);
+ } else if (type == TYPEC_PORT_UFP) {
+ if (!(port->pwr_role == TYPEC_SINK &&
+ port->data_role == TYPEC_DEVICE))
+ tcpm_set_state(port, PORT_RESET, 0);
+ } else if (type == TYPEC_PORT_DFP) {
+ if (!(port->pwr_role == TYPEC_SOURCE &&
+ port->data_role == TYPEC_HOST))
+ tcpm_set_state(port, PORT_RESET, 0);
+ }
+
+port_unlock:
+ mutex_unlock(&port->lock);
+ return 0;
+}
+
void tcpm_tcpc_reset(struct tcpm_port *port)
{
mutex_lock(&port->lock);
@@ -3504,9 +3533,10 @@ struct tcpm_port *tcpm_register_port(struct device *dev,
struct tcpc_dev *tcpc)
port->typec_caps.pr_set = tcpm_pr_set;
port->typec_caps.vconn_set = tcpm_vconn_set;
port->typec_caps.try_role = tcpm_try_role;
+ port->typec_caps.port_type_set = tcpm_port_type_set;
port->partner_desc.identity = &port->partner_ident;
-
+ port->port_type = tcpc->config->type;
/*
* TODO:
* - alt_modes, set_alt_mode
--
2.14.1.342.g6490525c54-goog
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