linux-kernel - [PATCH v3 09/11] platform/chrome: cros_ec_typec: Set partner num

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Date:   Mon, 16 Nov 2020 12:11:54 -0800
From:   Prashant Malani <pmalani@...omium.org>
To:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        gregkh@...uxfoundation.org, heikki.krogerus@...ux.intel.com,
        enric.balletbo@...labora.com
Cc:     Prashant Malani <pmalani@...omium.org>,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>
Subject: [PATCH v3 09/11] platform/chrome: cros_ec_typec: Set partner num_altmodes

Set the number of altmodes available for a registered partner using the
Type C connector class framework routine.

Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Prashant Malani <pmalani@...omium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
---

Changes in v3:
- Re-arranged patch order and combined it with related series of
  patches.
- Added Reviewed-by tags

Changes in v2:
- Patch introduced for the first time in v2.

 drivers/platform/chrome/cros_ec_typec.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
index cf609aa10567..ad5e37bfd45d 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -642,6 +642,7 @@ static int cros_typec_register_altmodes(struct cros_typec_data *typec, int port_
 	struct cros_typec_altmode_node *node;
 	struct typec_altmode_desc desc;
 	struct typec_altmode *amode;
+	int num_altmodes = 0;
 	int ret = 0;
 	int i, j;
 
@@ -668,9 +669,16 @@ static int cros_typec_register_altmodes(struct cros_typec_data *typec, int port_
 
 			node->amode = amode;
 			list_add_tail(&node->list, &port->partner_mode_list);
+			num_altmodes++;
 		}
 	}
 
+	ret = typec_partner_set_num_altmodes(port->partner, num_altmodes);
+	if (ret < 0) {
+		dev_err(typec->dev, "Unable to set partner num_altmodes for port: %d\n", port_num);
+		goto err_cleanup;
+	}
+
 	return 0;
 
 err_cleanup:
-- 
2.29.2.299.gdc1121823c-goog