linux-kernel - [PATCH 6/6] platform/chrome: cros_ec

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Date:   Thu,  5 Nov 2020 17:28:03 -0800
From:   Prashant Malani <pmalani@...omium.org>
To:     linux-kernel@...r.kernel.org
Cc:     heikki.krogerus@...ux.intel.com, dzigterman@...omium.org,
        alevkoy@...omium.org, Prashant Malani <pmalani@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>
Subject: [PATCH 6/6] platform/chrome: cros_ec_typec: Store cable plug type

Use the PD VDO Type C cable plug type macro to retrieve and store the
cable plug type in the cable descriptor.

Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Prashant Malani <pmalani@...omium.org>
---
 drivers/platform/chrome/cros_ec_typec.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
index 5e7f0b4ebbec..0a2a8b0f8115 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -709,6 +709,7 @@ static int cros_typec_handle_sop_prime_disc(struct cros_typec_data *typec, int p
 		.port = port_num,
 		.partner_type = TYPEC_PARTNER_SOP_PRIME,
 	};
+	uint32_t cable_plug_type;
 	int ret = 0;
 
 	memset(disc, 0, EC_PROTO2_MAX_RESPONSE_SIZE);
@@ -722,8 +723,26 @@ static int cros_typec_handle_sop_prime_disc(struct cros_typec_data *typec, int p
 	/* Parse the PD identity data, even if only 0s were returned. */
 	cros_typec_parse_pd_identity(&port->c_identity, disc);
 
-	if (disc->identity_count != 0)
+	if (disc->identity_count != 0) {
+		cable_plug_type = VDO_TYPEC_CABLE_TYPE(port->c_identity.vdo[0]);
+		switch (cable_plug_type) {
+		case CABLE_ATYPE:
+			desc.type = USB_PLUG_TYPE_A;
+			break;
+		case CABLE_BTYPE:
+			desc.type = USB_PLUG_TYPE_B;
+			break;
+		case CABLE_CTYPE:
+			desc.type = USB_PLUG_TYPE_C;
+			break;
+		case CABLE_CAPTIVE:
+			desc.type = USB_PLUG_CAPTIVE;
+			break;
+		default:
+			desc.type = USB_PLUG_NONE;
+		}
 		desc.active = PD_IDH_PTYPE(port->c_identity.id_header) == IDH_PTYPE_ACABLE;
+	}
 
 	desc.identity = &port->c_identity;
 
-- 
2.29.1.341.ge80a0c044ae-goog