// SPDX-License-Identifier: GPL-2.0 /* * Driver for Intel PMC USB mux control * * Copyright (C) 2020 Intel Corporation * Author: Heikki Krogerus <[email protected]> */ #include <linux/acpi.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/property.h> #include <linux/usb/pd.h> #include <linux/usb/role.h> #include <linux/usb/typec_mux.h> #include <linux/usb/typec_dp.h> #include <linux/usb/typec_tbt.h> #include <linux/debugfs.h> #include <linux/usb.h> #include <asm/intel_scu_ipc.h> #define PMC_USBC_CMD … /* Response status bits */ #define PMC_USB_RESP_STATUS_FAILURE … #define PMC_USB_RESP_STATUS_FATAL … /* "Usage" OOB Message field values */ enum { … }; #define PMC_USB_MSG_USB2_PORT_SHIFT … #define PMC_USB_MSG_USB3_PORT_SHIFT … #define PMC_USB_MSG_UFP_SHIFT … #define PMC_USB_MSG_ORI_HSL_SHIFT … #define PMC_USB_MSG_ORI_AUX_SHIFT … /* Alt Mode Request */ struct altmode_req { … } __packed; #define PMC_USB_MODE_TYPE_SHIFT … enum { … }; /* Common Mode Data bits */ #define PMC_USB_ALTMODE_RETIMER_CABLE … #define PMC_USB_ALTMODE_ORI_SHIFT … #define PMC_USB_ALTMODE_UFP_SHIFT … /* DP specific Mode Data bits */ #define PMC_USB_ALTMODE_DP_MODE_SHIFT … /* TBT specific Mode Data bits */ #define PMC_USB_ALTMODE_TBT_TYPE … #define PMC_USB_ALTMODE_CABLE_TYPE … #define PMC_USB_ALTMODE_ACTIVE_LINK … #define PMC_USB_ALTMODE_ACTIVE_CABLE … #define PMC_USB_ALTMODE_FORCE_LSR … #define PMC_USB_ALTMODE_CABLE_SPD(_s_) … #define PMC_USB_ALTMODE_CABLE_USB31 … #define PMC_USB_ALTMODE_CABLE_10GPS … #define PMC_USB_ALTMODE_CABLE_20GPS … #define PMC_USB_ALTMODE_TBT_GEN(_g_) … /* Display HPD Request bits */ #define PMC_USB_DP_HPD_LVL … #define PMC_USB_DP_HPD_IRQ … /* * Input Output Manager (IOM) PORT STATUS */ #define IOM_PORT_STATUS_ACTIVITY_TYPE_MASK … #define IOM_PORT_STATUS_ACTIVITY_TYPE_SHIFT … #define IOM_PORT_STATUS_ACTIVITY_TYPE_USB … /* activity type: Safe Mode */ #define IOM_PORT_STATUS_ACTIVITY_TYPE_SAFE_MODE … /* activity type: Display Port */ #define IOM_PORT_STATUS_ACTIVITY_TYPE_DP … /* activity type: Display Port Multi Function Device */ #define IOM_PORT_STATUS_ACTIVITY_TYPE_DP_MFD … /* activity type: Thunderbolt */ #define IOM_PORT_STATUS_ACTIVITY_TYPE_TBT … #define IOM_PORT_STATUS_ACTIVITY_TYPE_ALT_MODE_USB … #define IOM_PORT_STATUS_ACTIVITY_TYPE_ALT_MODE_TBT_USB … /* Upstream Facing Port Information */ #define IOM_PORT_STATUS_UFP … /* Display Port Hot Plug Detect status */ #define IOM_PORT_STATUS_DHPD_HPD_STATUS_MASK … #define IOM_PORT_STATUS_DHPD_HPD_STATUS_SHIFT … #define IOM_PORT_STATUS_DHPD_HPD_STATUS_ASSERT … #define IOM_PORT_STATUS_DHPD_HPD_SOURCE_TBT … #define IOM_PORT_STATUS_CONNECTED … #define IOM_PORT_ACTIVITY_IS(_status_, _type_) … #define IOM_PORT_HPD_ASSERTED(_status_) … /* IOM port status register */ #define IOM_PORT_STATUS_REGS(_offset_, _size_) … #define IOM_PORT_STATUS_REGS_SZ_MASK … #define IOM_PORT_STATUS_REGS_SZ_4 … #define IOM_PORT_STATUS_REGS_SZ_8 … #define IOM_PORT_STATUS_REGS_OFFSET(_d_) … #define IOM_PORT_STATUS_REGS_SIZE(_d_) … struct pmc_usb; struct pmc_usb_port { … }; struct pmc_usb { … }; static struct dentry *pmc_mux_debugfs_root; static void update_port_status(struct pmc_usb_port *port) { … } static int sbu_orientation(struct pmc_usb_port *port) { … } static int hsl_orientation(struct pmc_usb_port *port) { … } static bool is_pmc_mux_tbt(struct acpi_device *adev) { … } static int pmc_usb_send_command(struct intel_scu_ipc_dev *ipc, u8 *msg, u32 len) { … } static int pmc_usb_command(struct pmc_usb_port *port, u8 *msg, u32 len) { … } static int pmc_usb_mux_dp_hpd(struct pmc_usb_port *port, struct typec_displayport_data *dp) { … } static int pmc_usb_mux_dp(struct pmc_usb_port *port, struct typec_mux_state *state) { … } static int pmc_usb_mux_tbt(struct pmc_usb_port *port, struct typec_mux_state *state) { … } static int pmc_usb_mux_usb4(struct pmc_usb_port *port, struct typec_mux_state *state) { … } static int pmc_usb_mux_safe_state(struct pmc_usb_port *port, struct typec_mux_state *state) { … } static int pmc_usb_disconnect(struct pmc_usb_port *port) { … } static int pmc_usb_connect(struct pmc_usb_port *port, enum usb_role role) { … } static int pmc_usb_mux_set(struct typec_mux_dev *mux, struct typec_mux_state *state) { … } static int pmc_usb_set_orientation(struct typec_switch_dev *sw, enum typec_orientation orientation) { … } static int pmc_usb_set_role(struct usb_role_switch *sw, enum usb_role role) { … } static int pmc_usb_register_port(struct pmc_usb *pmc, int index, struct fwnode_handle *fwnode) { … } /* IOM ACPI IDs and IOM_PORT_STATUS_OFFSET */ static const struct acpi_device_id iom_acpi_ids[] = …; static int pmc_usb_probe_iom(struct pmc_usb *pmc) { … } static int port_iom_status_show(struct seq_file *s, void *unused) { … } DEFINE_SHOW_ATTRIBUTE(…); static void pmc_mux_port_debugfs_init(struct pmc_usb_port *port) { … } static int pmc_usb_probe(struct platform_device *pdev) { … } static void pmc_usb_remove(struct platform_device *pdev) { … } static const struct acpi_device_id pmc_usb_acpi_ids[] = …; MODULE_DEVICE_TABLE(acpi, pmc_usb_acpi_ids); static struct platform_driver pmc_usb_driver = …; static int __init pmc_usb_init(void) { … } module_init(…) …; static void __exit pmc_usb_exit(void) { … } module_exit(pmc_usb_exit); MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …;
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