diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/string.h | 10 | ||||
| -rw-r--r-- | include/linux/usb.h | 71 | ||||
| -rw-r--r-- | include/linux/usb/hcd.h | 7 | ||||
| -rw-r--r-- | include/linux/usb/of.h | 5 | ||||
| -rw-r--r-- | include/linux/usb/typec.h | 243 |
5 files changed, 334 insertions, 2 deletions
diff --git a/include/linux/string.h b/include/linux/string.h index 26b6f6a66f83..c4011b28f3d8 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -135,6 +135,16 @@ static inline int strtobool(const char *s, bool *res) } int match_string(const char * const *array, size_t n, const char *string); +int __sysfs_match_string(const char * const *array, size_t n, const char *s); + +/** + * sysfs_match_string - matches given string in an array + * @_a: array of strings + * @_s: string to match with + * + * Helper for __sysfs_match_string(). Calculates the size of @a automatically. + */ +#define sysfs_match_string(_a, _s) __sysfs_match_string(_a, ARRAY_SIZE(_a), _s) #ifdef CONFIG_BINARY_PRINTF int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args); diff --git a/include/linux/usb.h b/include/linux/usb.h index 7e68259360de..226557362d36 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -99,6 +99,76 @@ enum usb_interface_condition { USB_INTERFACE_UNBINDING, }; +int __must_check +usb_find_common_endpoints(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **bulk_in, + struct usb_endpoint_descriptor **bulk_out, + struct usb_endpoint_descriptor **int_in, + struct usb_endpoint_descriptor **int_out); + +int __must_check +usb_find_common_endpoints_reverse(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **bulk_in, + struct usb_endpoint_descriptor **bulk_out, + struct usb_endpoint_descriptor **int_in, + struct usb_endpoint_descriptor **int_out); + +static inline int __must_check +usb_find_bulk_in_endpoint(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **bulk_in) +{ + return usb_find_common_endpoints(alt, bulk_in, NULL, NULL, NULL); +} + +static inline int __must_check +usb_find_bulk_out_endpoint(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **bulk_out) +{ + return usb_find_common_endpoints(alt, NULL, bulk_out, NULL, NULL); +} + +static inline int __must_check +usb_find_int_in_endpoint(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **int_in) +{ + return usb_find_common_endpoints(alt, NULL, NULL, int_in, NULL); +} + +static inline int __must_check +usb_find_int_out_endpoint(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **int_out) +{ + return usb_find_common_endpoints(alt, NULL, NULL, NULL, int_out); +} + +static inline int __must_check +usb_find_last_bulk_in_endpoint(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **bulk_in) +{ + return usb_find_common_endpoints_reverse(alt, bulk_in, NULL, NULL, NULL); +} + +static inline int __must_check +usb_find_last_bulk_out_endpoint(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **bulk_out) +{ + return usb_find_common_endpoints_reverse(alt, NULL, bulk_out, NULL, NULL); +} + +static inline int __must_check +usb_find_last_int_in_endpoint(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **int_in) +{ + return usb_find_common_endpoints_reverse(alt, NULL, NULL, int_in, NULL); +} + +static inline int __must_check +usb_find_last_int_out_endpoint(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **int_out) +{ + return usb_find_common_endpoints_reverse(alt, NULL, NULL, NULL, int_out); +} + /** * struct usb_interface - what usb device drivers talk to * @altsetting: array of interface structures, one for each alternate @@ -354,6 +424,7 @@ struct usb_devmap { */ struct usb_bus { struct device *controller; /* host/master side hardware */ + struct device *sysdev; /* as seen from firmware or bus */ int busnum; /* Bus number (in order of reg) */ const char *bus_name; /* stable id (PCI slot_name etc) */ u8 uses_dma; /* Does the host controller use DMA? */ diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 40edf6a8533e..a469999a106d 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -437,6 +437,9 @@ extern int usb_hcd_alloc_bandwidth(struct usb_device *udev, struct usb_host_interface *new_alt); extern int usb_hcd_get_frame_number(struct usb_device *udev); +struct usb_hcd *__usb_create_hcd(const struct hc_driver *driver, + struct device *sysdev, struct device *dev, const char *bus_name, + struct usb_hcd *primary_hcd); extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, struct device *dev, const char *bus_name); extern struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver, @@ -453,7 +456,7 @@ extern int usb_hcd_find_raw_port_number(struct usb_hcd *hcd, int port1); struct platform_device; extern void usb_hcd_platform_shutdown(struct platform_device *dev); -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI struct pci_dev; struct pci_device_id; extern int usb_hcd_pci_probe(struct pci_dev *dev, @@ -466,7 +469,7 @@ extern int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *dev); #ifdef CONFIG_PM extern const struct dev_pm_ops usb_hcd_pci_pm_ops; #endif -#endif /* CONFIG_PCI */ +#endif /* CONFIG_USB_PCI */ /* pci-ish (pdev null is ok) buffer alloc/mapping support */ void usb_init_pool_max(void); diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h index 5ff9032ee1b4..4031f47629ec 100644 --- a/include/linux/usb/of.h +++ b/include/linux/usb/of.h @@ -18,6 +18,7 @@ int of_usb_update_otg_caps(struct device_node *np, struct usb_otg_caps *otg_caps); struct device_node *usb_of_get_child_node(struct device_node *parent, int portnum); +struct device *usb_of_get_companion_dev(struct device *dev); #else static inline enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0) @@ -38,6 +39,10 @@ static inline struct device_node *usb_of_get_child_node { return NULL; } +static inline struct device *usb_of_get_companion_dev(struct device *dev) +{ + return NULL; +} #endif #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_SUPPORT) diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h new file mode 100644 index 000000000000..ec78204964ab --- /dev/null +++ b/include/linux/usb/typec.h @@ -0,0 +1,243 @@ + +#ifndef __LINUX_USB_TYPEC_H +#define __LINUX_USB_TYPEC_H + +#include <linux/types.h> + +/* XXX: Once we have a header for USB Power Delivery, this belongs there */ +#define ALTMODE_MAX_MODES 6 + +/* USB Type-C Specification releases */ +#define USB_TYPEC_REV_1_0 0x100 /* 1.0 */ +#define USB_TYPEC_REV_1_1 0x110 /* 1.1 */ +#define USB_TYPEC_REV_1_2 0x120 /* 1.2 */ + +struct typec_altmode; +struct typec_partner; +struct typec_cable; +struct typec_plug; +struct typec_port; + +struct fwnode_handle; + +enum typec_port_type { + TYPEC_PORT_DFP, + TYPEC_PORT_UFP, + TYPEC_PORT_DRP, +}; + +enum typec_plug_type { + USB_PLUG_NONE, + USB_PLUG_TYPE_A, + USB_PLUG_TYPE_B, + USB_PLUG_TYPE_C, + USB_PLUG_CAPTIVE, +}; + +enum typec_data_role { + TYPEC_DEVICE, + TYPEC_HOST, +}; + +enum typec_role { + TYPEC_SINK, + TYPEC_SOURCE, +}; + +enum typec_pwr_opmode { + TYPEC_PWR_MODE_USB, + TYPEC_PWR_MODE_1_5A, + TYPEC_PWR_MODE_3_0A, + TYPEC_PWR_MODE_PD, +}; + +enum typec_accessory { + TYPEC_ACCESSORY_NONE, + TYPEC_ACCESSORY_AUDIO, + TYPEC_ACCESSORY_DEBUG, +}; + +#define TYPEC_MAX_ACCESSORY 3 + +/* + * struct usb_pd_identity - USB Power Delivery identity data + * @id_header: ID Header VDO + * @cert_stat: Cert Stat VDO + * @product: Product VDO + * + * USB power delivery Discover Identity command response data. + * + * REVISIT: This is USB Power Delivery specific information, so this structure + * probable belongs to USB Power Delivery header file once we have them. + */ +struct usb_pd_identity { + u32 id_header; + u32 cert_stat; + u32 product; +}; + +int typec_partner_set_identity(struct typec_partner *partner); +int typec_cable_set_identity(struct typec_cable *cable); + +/* + * struct typec_mode_desc - Individual Mode of an Alternate Mode + * @index: Index of the Mode within the SVID + * @vdo: VDO returned by Discover Modes USB PD command + * @desc: Optional human readable description of the mode + * @roles: Only for ports. DRP if the mode is available in both roles + * + * Description of a mode of an Alternate Mode which a connector, cable plug or + * partner supports. Every mode will have it's own sysfs group. The details are + * the VDO returned by discover modes command, description for the mode and + * active flag telling has the mode being entered or not. + */ +struct typec_mode_desc { + int index; + u32 vdo; + char *desc; + /* Only used with ports */ + enum typec_port_type roles; +}; + +/* + * struct typec_altmode_desc - USB Type-C Alternate Mode Descriptor + * @svid: Standard or Vendor ID + * @n_modes: Number of modes + * @modes: Array of modes supported by the Alternate Mode + * + * Representation of an Alternate Mode that has SVID assigned by USB-IF. The + * array of modes will list the modes of a particular SVID that are supported by + * a connector, partner of a cable plug. + */ +struct typec_altmode_desc { + u16 svid; + int n_modes; + struct typec_mode_desc modes[ALTMODE_MAX_MODES]; +}; + +struct typec_altmode +*typec_partner_register_altmode(struct typec_partner *partner, + struct typec_altmode_desc *desc); +struct typec_altmode +*typec_plug_register_altmode(struct typec_plug *plug, + struct typec_altmode_desc *desc); +struct typec_altmode +*typec_port_register_altmode(struct typec_port *port, + struct typec_altmode_desc *desc); +void typec_unregister_altmode(struct typec_altmode *altmode); + +struct typec_port *typec_altmode2port(struct typec_altmode *alt); + +void typec_altmode_update_active(struct typec_altmode *alt, int mode, + bool active); + +enum typec_plug_index { + TYPEC_PLUG_SOP_P, + TYPEC_PLUG_SOP_PP, +}; + +/* + * struct typec_plug_desc - USB Type-C Cable Plug Descriptor + * @index: SOP Prime for the plug connected to DFP and SOP Double Prime for the + * plug connected to UFP + * + * Represents USB Type-C Cable Plug. + */ +struct typec_plug_desc { + enum typec_plug_index index; +}; + +/* + * struct typec_cable_desc - USB Type-C Cable Descriptor + * @type: The plug type from USB PD Cable VDO + * @active: Is the cable active or passive + * @identity: Result of Discover Identity command + * + * Represents USB Type-C Cable attached to USB Type-C port. + */ +struct typec_cable_desc { + enum typec_plug_type type; + unsigned int active:1; + struct usb_pd_identity *identity; +}; + +/* + * struct typec_partner_desc - USB Type-C Partner Descriptor + * @usb_pd: USB Power Delivery support + * @accessory: Audio, Debug or none. + * @identity: Discover Identity command data + * + * Details about a partner that is attached to USB Type-C port. If @identity + * member exists when partner is registered, a directory named "identity" is + * created to sysfs for the partner device. + */ +struct typec_partner_desc { + unsigned int usb_pd:1; + enum typec_accessory accessory; + struct usb_pd_identity *identity; +}; + +/* + * struct typec_capability - USB Type-C Port Capabilities + * @role: DFP (Host-only), UFP (Device-only) or DRP (Dual Role) + * @revision: USB Type-C Specification release. Binary coded decimal + * @pd_revision: USB Power Delivery Specification revision if supported + * @prefer_role: Initial role preference + * @accessory: Supported Accessory Modes + * @fwnode: Optional fwnode of the port + * @try_role: Set data role preference for DRP port + * @dr_set: Set Data Role + * @pr_set: Set Power Role + * @vconn_set: Set VCONN Role + * @activate_mode: Enter/exit given Alternate Mode + * + * Static capabilities of a single USB Type-C port. + */ +struct typec_capability { + enum typec_port_type type; + u16 revision; /* 0120H = "1.2" */ + u16 pd_revision; /* 0300H = "3.0" */ + int prefer_role; + enum typec_accessory accessory[TYPEC_MAX_ACCESSORY]; + + struct fwnode_handle *fwnode; + + int (*try_role)(const struct typec_capability *, + int role); + + int (*dr_set)(const struct typec_capability *, + enum typec_data_role); + int (*pr_set)(const struct typec_capability *, + enum typec_role); + int (*vconn_set)(const struct typec_capability *, + enum typec_role); + + int (*activate_mode)(const struct typec_capability *, + int mode, int activate); +}; + +/* Specific to try_role(). Indicates the user want's to clear the preference. */ +#define TYPEC_NO_PREFERRED_ROLE (-1) + +struct typec_port *typec_register_port(struct device *parent, + const struct typec_capability *cap); +void typec_unregister_port(struct typec_port *port); + +struct typec_partner *typec_register_partner(struct typec_port *port, + struct typec_partner_desc *desc); +void typec_unregister_partner(struct typec_partner *partner); + +struct typec_cable *typec_register_cable(struct typec_port *port, + struct typec_cable_desc *desc); +void typec_unregister_cable(struct typec_cable *cable); + +struct typec_plug *typec_register_plug(struct typec_cable *cable, + struct typec_plug_desc *desc); +void typec_unregister_plug(struct typec_plug *plug); + +void typec_set_data_role(struct typec_port *port, enum typec_data_role role); +void typec_set_pwr_role(struct typec_port *port, enum typec_role role); +void typec_set_vconn_role(struct typec_port *port, enum typec_role role); +void typec_set_pwr_opmode(struct typec_port *port, enum typec_pwr_opmode mode); + +#endif /* __LINUX_USB_TYPEC_H */ |