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([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 13 Feb 2024 05:00:27 -0800 From: Heikki Krogerus To: Prashant Malani , Greg Kroah-Hartman Cc: Benson Leung , Tzung-Bi Shih , Guenter Roeck , Emilie Roberts , "Nyman, Mathias" , "Regupathy, Rajaram" , "Radjacoumar, Shyam Sundar" , Samuel Jacob , Uday Bhat , linux-usb@vger.kernel.org, chrome-platform@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/2] platform/chrome: cros_ec_typec: Make sure the USB role switch has PLD Date: Tue, 13 Feb 2024 15:00:18 +0200 Message-ID: <20240213130018.3029991-3-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240213130018.3029991-1-heikki.krogerus@linux.intel.com> References: <20240213130018.3029991-1-heikki.krogerus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790798163488369256 X-GMAIL-MSGID: 1790798163488369256 The USB role switch does not always have the _PLD (Physical Location of Device) in ACPI tables. If it's missing, assigning the PLD hash of the port to the switch. That should guarantee that the USB Type-C port mapping code is always able to find the connection between the two (the port and the switch). Tested-by: Uday Bhat Signed-off-by: Heikki Krogerus Acked-by: Prashant Malani --- drivers/platform/chrome/cros_ec_typec.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c index 2b2f14a1b711..4d305876ec08 100644 --- a/drivers/platform/chrome/cros_ec_typec.c +++ b/drivers/platform/chrome/cros_ec_typec.c @@ -24,6 +24,23 @@ #define DP_PORT_VDO (DP_CONF_SET_PIN_ASSIGN(BIT(DP_PIN_ASSIGN_C) | BIT(DP_PIN_ASSIGN_D)) | \ DP_CAP_DFP_D | DP_CAP_RECEPTACLE) +static void cros_typec_role_switch_quirk(struct fwnode_handle *fwnode) +{ +#ifdef CONFIG_ACPI + struct fwnode_handle *switch_fwnode; + + /* Supply the USB role switch with the correct pld_crc if it's missing. */ + switch_fwnode = fwnode_find_reference(fwnode, "usb-role-switch", 0); + if (!IS_ERR_OR_NULL(switch_fwnode)) { + struct acpi_device *adev = to_acpi_device_node(switch_fwnode); + + if (adev && !adev->pld_crc) + adev->pld_crc = to_acpi_device_node(fwnode)->pld_crc; + fwnode_handle_put(switch_fwnode); + } +#endif +} + static int cros_typec_parse_port_props(struct typec_capability *cap, struct fwnode_handle *fwnode, struct device *dev) @@ -66,6 +83,8 @@ static int cros_typec_parse_port_props(struct typec_capability *cap, cap->prefer_role = ret; } + cros_typec_role_switch_quirk(fwnode); + cap->fwnode = fwnode; return 0;