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platform/chrome: cros_ec_typec: Make sure the USB role switch has PLD

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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 <uday.m.bhat@intel.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240213130018.3029991-3-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2024-02-13 15:00:18 +02:00 committed by Greg Kroah-Hartman
parent 9a270ec7bf
commit 5640322057
1 changed files with 19 additions and 0 deletions
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19
drivers/platform/chrome/cros_ec_typec.c
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@ -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;