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| author | Badhri Jagan Sridharan <badhri@google.com> | 2020-10-28 23:31:31 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-18 12:56:58 +0100 |
| commit | 8115240c4fbd1c2705d1369f66168ec77fa2a7e4 (patch) | |
| tree | fe1b27cbe87b9fc1ea3a58bb0c4afe2a80119862 /drivers/usb/typec | |
| parent | a0ccdc4a77a1b36b682ae60361879eca0a0f88d6 (diff) | |
| download | linux-8115240c4fbd1c2705d1369f66168ec77fa2a7e4.tar.bz2 | |
usb: typec: tcpm: Refactor logic for new-source-frs-typec-current
New source's current capability is now defined as string based
device tree property through new-source-frs-typec-current.
Refactor tcpm code to parse new-source-frs-typec-current and
infer local port's new source current capability during frs.
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://lore.kernel.org/r/20201029063138.1429760-4-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/typec')
| -rw-r--r-- | drivers/usb/typec/tcpm/tcpm.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index a6fae1f86505..a091a63758f4 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -363,8 +363,8 @@ struct tcpm_port { /* port belongs to a self powered device */ bool self_powered; - /* FRS */ - enum frs_typec_current frs_current; + /* Sink FRS */ + enum frs_typec_current new_source_frs_current; /* Sink caps have been queried */ bool sink_cap_done; @@ -1713,7 +1713,7 @@ static void tcpm_pd_data_request(struct tcpm_port *port, unsigned int cnt = pd_header_cnt_le(msg->header); unsigned int rev = pd_header_rev_le(msg->header); unsigned int i; - enum frs_typec_current frs_current; + enum frs_typec_current partner_frs_current; bool frs_enable; int ret; @@ -1786,12 +1786,13 @@ static void tcpm_pd_data_request(struct tcpm_port *port, for (i = 0; i < cnt; i++) port->sink_caps[i] = le32_to_cpu(msg->payload[i]); - frs_current = (port->sink_caps[0] & PDO_FIXED_FRS_CURR_MASK) >> + partner_frs_current = (port->sink_caps[0] & PDO_FIXED_FRS_CURR_MASK) >> PDO_FIXED_FRS_CURR_SHIFT; - frs_enable = frs_current && (frs_current <= port->frs_current); + frs_enable = partner_frs_current && (partner_frs_current <= + port->new_source_frs_current); tcpm_log(port, "Port partner FRS capable partner_frs_current:%u port_frs_current:%u enable:%c", - frs_current, port->frs_current, frs_enable ? 'y' : 'n'); + partner_frs_current, port->new_source_frs_current, frs_enable ? 'y' : 'n'); if (frs_enable) { ret = port->tcpc->enable_frs(port->tcpc, true); tcpm_log(port, "Enable FRS %s, ret:%d\n", ret ? "fail" : "success", ret); @@ -4808,9 +4809,10 @@ sink: /* FRS can only be supported byb DRP ports */ if (port->port_type == TYPEC_PORT_DRP) { - ret = fwnode_property_read_u32(fwnode, "frs-typec-current", &frs_current); + ret = fwnode_property_read_u32(fwnode, "new-source-frs-typec-current", + &frs_current); if (ret >= 0 && frs_current <= FRS_5V_3A) - port->frs_current = frs_current; + port->new_source_frs_current = frs_current; } return 0; |