Merge tag 'chrome-platform-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

Pull chrome platform updates from Tzung-Bi Shih:

 - Support ACPI match for Framework systems

  - Expose new sysfs for:
     - PD mux status for each EC-managed Type-C port
     - EC feature of AP mode entry
     - Setting USB mode of EC Type-C

* tag 'chrome-platform-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  platform/chrome: cros_ec_typec: Add support for setting USB mode via sysfs
  platform/chrome: cros_ec_sysfs: Expose AP_MODE_ENTRY feature state
  platform/chrome: cros_ec_sysfs: Expose PD mux status
  platform/chrome: cros_ec_lpc: Match on Framework ACPI device
  MAINTAINERS: Update maintainers for ChromeOS USBC related drivers

Author: torvalds

Documentation/ABI/testing/sysfs-class-chromeos

@@ -31,3 +31,23 @@ Date:		August 2015
 KernelVersion:	4.2
 Description:
 		Show the information about the EC software and hardware.
+
+What:		/sys/class/chromeos/cros_ec/usbpdmuxinfo
+Date:		February 2025
+Description:
+		Show PD mux status for each typec port with following flags:
+		- "USB": USB connected
+		- "DP": DP connected
+		- "POLARITY": CC line Polarity inverted
+		- "HPD_IRQ": Hot Plug Detect interrupt is asserted
+		- "HPD_LVL": Hot Plug Detect level is asserted
+		- "SAFE": DP is in safe mode
+		- "TBT": TBT enabled
+		- "USB4": USB4 enabled
+
+What:		/sys/class/chromeos/cros_ec/ap_mode_entry
+Date:		February 2025
+Description:
+		Show if the AP mode entry EC feature is supported.
+		It indicates whether the EC waits for direction from the AP
+		to enter Type-C altmodes or USB4 mode.

MAINTAINERS

@@ -5485,16 +5485,19 @@ S:	Maintained
 F:	drivers/platform/chrome/cros_ec_uart.c
 
 CHROMEOS EC USB PD NOTIFY DRIVER
-M:	Prashant Malani <[email protected]>
+M:	Łukasz Bartosik <[email protected]>
+M:	Andrei Kuchynski <[email protected]>
+M:	Jameson Thies <[email protected]>
 L:	[email protected]
 S:	Maintained
 F:	drivers/platform/chrome/cros_usbpd_notify.c
 F:	include/linux/platform_data/cros_usbpd_notify.h
 
 CHROMEOS EC USB TYPE-C DRIVER
-M:	Prashant Malani <[email protected]>
 M:	Benson Leung <[email protected]>
 M:	Abhishek Pandit-Subedi <[email protected]>
+M:	Jameson Thies <[email protected]>
+M:	Andrei Kuchynski <[email protected]>
 L:	[email protected]
 S:	Maintained
 F:	drivers/platform/chrome/cros_ec_typec.*
@@ -5517,6 +5520,8 @@ F:	drivers/watchdog/cros_ec_wdt.c
 CHROMEOS UCSI DRIVER
 M:	Abhishek Pandit-Subedi <[email protected]>
 M:	Łukasz Bartosik <[email protected]>
+M:	Jameson Thies <[email protected]>
+M:	Andrei Kuchynski <[email protected]>
 L:	[email protected]
 S:	Maintained
 F:	drivers/usb/typec/ucsi/cros_ec_ucsi.c

drivers/platform/chrome/cros_ec_lpc.c

@@ -30,6 +30,7 @@
 
 #define DRV_NAME "cros_ec_lpcs"
 #define ACPI_DRV_NAME "GOOG0004"
+#define FRMW_ACPI_DRV_NAME "FRMWC004"
 
 /* True if ACPI device is present */
 static bool cros_ec_lpc_acpi_device_found;
@@ -514,7 +515,7 @@ static int cros_ec_lpc_probe(struct platform_device *pdev)
 	acpi_status status;
 	struct cros_ec_device *ec_dev;
 	struct cros_ec_lpc *ec_lpc;
-	struct lpc_driver_data *driver_data;
+	const struct lpc_driver_data *driver_data;
 	u8 buf[2] = {};
 	int irq, ret;
 	u32 quirks;
@@ -526,6 +527,9 @@ static int cros_ec_lpc_probe(struct platform_device *pdev)
 	ec_lpc->mmio_memory_base = EC_LPC_ADDR_MEMMAP;
 
 	driver_data = platform_get_drvdata(pdev);
+	if (!driver_data)
+		driver_data = acpi_device_get_match_data(dev);
+
 	if (driver_data) {
 		quirks = driver_data->quirks;
 
@@ -696,12 +700,6 @@ static void cros_ec_lpc_remove(struct platform_device *pdev)
 	cros_ec_unregister(ec_dev);
 }
 
-static const struct acpi_device_id cros_ec_lpc_acpi_device_ids[] = {
-	{ ACPI_DRV_NAME, 0 },
-	{ }
-};
-MODULE_DEVICE_TABLE(acpi, cros_ec_lpc_acpi_device_ids);
-
 static const struct lpc_driver_data framework_laptop_npcx_lpc_driver_data __initconst = {
 	.quirks = CROS_EC_LPC_QUIRK_REMAP_MEMORY,
 	.quirk_mmio_memory_base = 0xE00,
@@ -713,6 +711,13 @@ static const struct lpc_driver_data framework_laptop_mec_lpc_driver_data __initc
 	.quirk_aml_mutex_name = "ECMT",
 };
 
+static const struct acpi_device_id cros_ec_lpc_acpi_device_ids[] = {
+	{ ACPI_DRV_NAME, 0 },
+	{ FRMW_ACPI_DRV_NAME, (kernel_ulong_t)&framework_laptop_npcx_lpc_driver_data },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, cros_ec_lpc_acpi_device_ids);
+
 static const struct dmi_system_id cros_ec_lpc_dmi_table[] __initconst = {
 	{
 		/*
@@ -866,7 +871,8 @@ static int __init cros_ec_lpc_init(void)
 	int ret;
 	const struct dmi_system_id *dmi_match;
 
-	cros_ec_lpc_acpi_device_found = !!cros_ec_lpc_get_device(ACPI_DRV_NAME);
+	cros_ec_lpc_acpi_device_found = !!cros_ec_lpc_get_device(ACPI_DRV_NAME) ||
+		!!cros_ec_lpc_get_device(FRMW_ACPI_DRV_NAME);
 
 	dmi_match = dmi_first_match(cros_ec_lpc_dmi_table);
 

drivers/platform/chrome/cros_ec_sysfs.c

@@ -296,18 +296,81 @@ static ssize_t kb_wake_angle_store(struct device *dev,
 	return count;
 }
 
+static ssize_t usbpdmuxinfo_show(struct device *dev,
+				   struct device_attribute *attr,
+				   char *buf)
+{
+	struct cros_ec_dev *ec = to_cros_ec_dev(dev);
+	ssize_t count = 0;
+	struct ec_response_usb_pd_ports resp_pd_ports;
+	int ret;
+	int i;
+
+	ret = cros_ec_cmd(ec->ec_dev, 0, EC_CMD_USB_PD_PORTS, NULL, 0,
+			  &resp_pd_ports, sizeof(resp_pd_ports));
+	if (ret < 0)
+		return -EIO;
+
+	for (i = 0; i < resp_pd_ports.num_ports; i++) {
+		struct ec_response_usb_pd_mux_info resp_mux;
+		struct ec_params_usb_pd_mux_info req = {
+			.port = i,
+		};
+
+		ret = cros_ec_cmd(ec->ec_dev, 0, EC_CMD_USB_PD_MUX_INFO,
+			  &req, sizeof(req), &resp_mux, sizeof(resp_mux));
+
+		if (ret >= 0) {
+			count += sysfs_emit_at(buf, count, "Port %d:", i);
+			count += sysfs_emit_at(buf, count, " USB=%d",
+					!!(resp_mux.flags & USB_PD_MUX_USB_ENABLED));
+			count += sysfs_emit_at(buf, count, " DP=%d",
+					!!(resp_mux.flags & USB_PD_MUX_DP_ENABLED));
+			count += sysfs_emit_at(buf, count, " POLARITY=%s",
+					(resp_mux.flags & USB_PD_MUX_POLARITY_INVERTED) ?
+					"INVERTED" : "NORMAL");
+			count += sysfs_emit_at(buf, count, " HPD_IRQ=%d",
+					!!(resp_mux.flags & USB_PD_MUX_HPD_IRQ));
+			count += sysfs_emit_at(buf, count, " HPD_LVL=%d",
+					!!(resp_mux.flags & USB_PD_MUX_HPD_LVL));
+			count += sysfs_emit_at(buf, count, " SAFE=%d",
+					!!(resp_mux.flags & USB_PD_MUX_SAFE_MODE));
+			count += sysfs_emit_at(buf, count, " TBT=%d",
+					!!(resp_mux.flags & USB_PD_MUX_TBT_COMPAT_ENABLED));
+			count += sysfs_emit_at(buf, count, " USB4=%d\n",
+					!!(resp_mux.flags & USB_PD_MUX_USB4_ENABLED));
+		}
+	}
+
+	return count ? : -EIO;
+}
+
+static ssize_t ap_mode_entry_show(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	struct cros_ec_dev *ec = to_cros_ec_dev(dev);
+	const bool ap_driven_altmode = cros_ec_check_features(
+		ec, EC_FEATURE_TYPEC_REQUIRE_AP_MODE_ENTRY);
+
+	return sysfs_emit(buf, "%s\n", ap_driven_altmode ? "yes" : "no");
+}
+
 /* Module initialization */
 
 static DEVICE_ATTR_RW(reboot);
 static DEVICE_ATTR_RO(version);
 static DEVICE_ATTR_RO(flashinfo);
 static DEVICE_ATTR_RW(kb_wake_angle);
+static DEVICE_ATTR_RO(usbpdmuxinfo);
+static DEVICE_ATTR_RO(ap_mode_entry);
 
 static struct attribute *__ec_attrs[] = {
 	&dev_attr_kb_wake_angle.attr,
 	&dev_attr_reboot.attr,
 	&dev_attr_version.attr,
 	&dev_attr_flashinfo.attr,
+	&dev_attr_usbpdmuxinfo.attr,
+	&dev_attr_ap_mode_entry.attr,
 	NULL,
 };
 
@@ -320,6 +383,14 @@ static umode_t cros_ec_ctrl_visible(struct kobject *kobj,
 	if (a == &dev_attr_kb_wake_angle.attr && !ec->has_kb_wake_angle)
 		return 0;
 
+	if (a == &dev_attr_usbpdmuxinfo.attr ||
+		a == &dev_attr_ap_mode_entry.attr) {
+		struct cros_ec_platform *ec_platform = dev_get_platdata(ec->dev);
+
+		if (strcmp(ec_platform->ec_name, CROS_EC_DEV_NAME))
+			return 0;
+	}
+
 	return a->mode;
 }
 

drivers/platform/chrome/cros_ec_typec.c

@@ -42,6 +42,24 @@ static void cros_typec_role_switch_quirk(struct fwnode_handle *fwnode)
 #endif
 }
 
+static int cros_typec_enter_usb_mode(struct typec_port *tc_port, enum usb_mode mode)
+{
+	struct cros_typec_port *port = typec_get_drvdata(tc_port);
+	struct ec_params_typec_control req = {
+		.port = port->port_num,
+		.command = (mode == USB_MODE_USB4) ?
+			TYPEC_CONTROL_COMMAND_ENTER_MODE : TYPEC_CONTROL_COMMAND_EXIT_MODES,
+		.mode_to_enter = CROS_EC_ALTMODE_USB4
+	};
+
+	return cros_ec_cmd(port->typec_data->ec, 0, EC_CMD_TYPEC_CONTROL,
+			  &req, sizeof(req), NULL, 0);
+}
+
+static const struct typec_operations cros_typec_usb_mode_ops = {
+	.enter_usb_mode = cros_typec_enter_usb_mode
+};
+
 static int cros_typec_parse_port_props(struct typec_capability *cap,
 				       struct fwnode_handle *fwnode,
 				       struct device *dev)
@@ -84,6 +102,13 @@ static int cros_typec_parse_port_props(struct typec_capability *cap,
 		cap->prefer_role = ret;
 	}
 
+	if (fwnode_property_present(fwnode, "usb2-port"))
+		cap->usb_capability |= USB_CAPABILITY_USB2;
+	if (fwnode_property_present(fwnode, "usb3-port"))
+		cap->usb_capability |= USB_CAPABILITY_USB3;
+	if (fwnode_property_present(fwnode, "usb4-port"))
+		cap->usb_capability |= USB_CAPABILITY_USB4;
+
 	cros_typec_role_switch_quirk(fwnode);
 
 	cap->fwnode = fwnode;
@@ -379,6 +404,9 @@ static int cros_typec_init_ports(struct cros_typec_data *typec)
 		if (ret < 0)
 			goto unregister_ports;
 
+		cap->driver_data = cros_port;
+		cap->ops = &cros_typec_usb_mode_ops;
+
 		cros_port->port = typec_register_port(dev, cap);
 		if (IS_ERR(cros_port->port)) {
 			ret = PTR_ERR(cros_port->port);

drivers/platform/chrome/cros_ec_typec.h

@@ -18,6 +18,7 @@
 enum {
 	CROS_EC_ALTMODE_DP = 0,
 	CROS_EC_ALTMODE_TBT,
+	CROS_EC_ALTMODE_USB4,
 	CROS_EC_ALTMODE_MAX,
 };