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author | Sascha Hauer <s.hauer@pengutronix.de> | 2023-03-20 08:51:19 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2023-03-20 16:05:12 +0100 |
commit | 37ea6d0f30d45b4ad5539a9748ebf5e4e5635132 (patch) | |
tree | f49390f7a4c86123dae5fe239d2911c66a1a56f5 /drivers/usb/gadget/f_serial.c | |
parent | 8e3ca79a9177290d6ab493ae4582ff7f2a71c25d (diff) | |
download | barebox-37ea6d0f30d45b4ad5539a9748ebf5e4e5635132.tar.gz barebox-37ea6d0f30d45b4ad5539a9748ebf5e4e5635132.tar.xz |
usb: gadget: move files to place where Linux has them
For easier patch merging and comparison with Linux move the usb gadget
files to where Linux has them.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/usb/gadget/f_serial.c')
-rw-r--r-- | drivers/usb/gadget/f_serial.c | 325 |
1 files changed, 0 insertions, 325 deletions
diff --git a/drivers/usb/gadget/f_serial.c b/drivers/usb/gadget/f_serial.c deleted file mode 100644 index 494f6c872e..0000000000 --- a/drivers/usb/gadget/f_serial.c +++ /dev/null @@ -1,325 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * f_serial.c - generic USB serial function driver - * - * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com) - * Copyright (C) 2008 by David Brownell - * Copyright (C) 2008 by Nokia Corporation - */ - -#include <common.h> -#include <asm/byteorder.h> -#include <linux/err.h> - -#include "u_serial.h" - - -/* - * This function packages a simple "generic serial" port with no real - * control mechanisms, just raw data transfer over two bulk endpoints. - * - * Because it's not standardized, this isn't as interoperable as the - * CDC ACM driver. However, for many purposes it's just as functional - * if you can arrange appropriate host side drivers. - */ - -struct f_gser { - struct gserial port; - u8 data_id; - u8 port_num; -}; - -static inline struct f_gser *func_to_gser(struct usb_function *f) -{ - return container_of(f, struct f_gser, port.func); -} - -/*-------------------------------------------------------------------------*/ - -/* interface descriptor: */ - -static struct usb_interface_descriptor gser_interface_desc = { - .bLength = USB_DT_INTERFACE_SIZE, - .bDescriptorType = USB_DT_INTERFACE, - /* .bInterfaceNumber = DYNAMIC */ - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 0, - .bInterfaceProtocol = 0, - /* .iInterface = DYNAMIC */ -}; - -/* full speed support: */ - -static struct usb_endpoint_descriptor gser_fs_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_BULK, -}; - -static struct usb_endpoint_descriptor gser_fs_out_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = USB_DIR_OUT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, -}; - -static struct usb_descriptor_header *gser_fs_function[] = { - (struct usb_descriptor_header *) &gser_interface_desc, - (struct usb_descriptor_header *) &gser_fs_in_desc, - (struct usb_descriptor_header *) &gser_fs_out_desc, - NULL, -}; - -/* high speed support: */ - -static struct usb_endpoint_descriptor gser_hs_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = cpu_to_le16(512), -}; - -static struct usb_endpoint_descriptor gser_hs_out_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = cpu_to_le16(512), -}; - -static struct usb_descriptor_header *gser_hs_function[] = { - (struct usb_descriptor_header *) &gser_interface_desc, - (struct usb_descriptor_header *) &gser_hs_in_desc, - (struct usb_descriptor_header *) &gser_hs_out_desc, - NULL, -}; - -static struct usb_endpoint_descriptor gser_ss_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = cpu_to_le16(1024), -}; - -static struct usb_endpoint_descriptor gser_ss_out_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = cpu_to_le16(1024), -}; - -static struct usb_ss_ep_comp_descriptor gser_ss_bulk_comp_desc = { - .bLength = sizeof gser_ss_bulk_comp_desc, - .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, -}; - -static struct usb_descriptor_header *gser_ss_function[] = { - (struct usb_descriptor_header *) &gser_interface_desc, - (struct usb_descriptor_header *) &gser_ss_in_desc, - (struct usb_descriptor_header *) &gser_ss_bulk_comp_desc, - (struct usb_descriptor_header *) &gser_ss_out_desc, - (struct usb_descriptor_header *) &gser_ss_bulk_comp_desc, - NULL, -}; - -/* string descriptors: */ - -static struct usb_string gser_string_defs[] = { - [0].s = "Generic Serial", - { } /* end of list */ -}; - -static struct usb_gadget_strings gser_string_table = { - .language = 0x0409, /* en-us */ - .strings = gser_string_defs, -}; - -static struct usb_gadget_strings *gser_strings[] = { - &gser_string_table, - NULL, -}; - -/*-------------------------------------------------------------------------*/ - -static int gser_set_alt(struct usb_function *f, unsigned intf, unsigned alt) -{ - struct f_gser *gser = func_to_gser(f); - struct usb_composite_dev *cdev = f->config->cdev; - - /* we know alt == 0, so this is an activation or a reset */ - - if (gser->port.in->driver_data) { - DBG(cdev, "reset generic ttyGS%d\n", gser->port_num); - gserial_disconnect(&gser->port); - } - if (!gser->port.in->desc || !gser->port.out->desc) { - DBG(cdev, "activate generic ttyGS%d\n", gser->port_num); - if (config_ep_by_speed(cdev->gadget, f, gser->port.in) || - config_ep_by_speed(cdev->gadget, f, gser->port.out)) { - gser->port.in->desc = NULL; - gser->port.out->desc = NULL; - return -EINVAL; - } - } - gserial_connect(&gser->port, gser->port_num); - return 0; -} - -static void gser_disable(struct usb_function *f) -{ - struct f_gser *gser = func_to_gser(f); - struct usb_composite_dev *cdev = f->config->cdev; - - DBG(cdev, "generic ttyGS%d deactivated\n", gser->port_num); - gserial_disconnect(&gser->port); -} - -/*-------------------------------------------------------------------------*/ - -/* serial function driver setup/binding */ - -static int gser_bind(struct usb_configuration *c, struct usb_function *f) -{ - struct usb_composite_dev *cdev = c->cdev; - struct f_gser *gser = func_to_gser(f); - int status; - struct usb_ep *ep; - - /* REVISIT might want instance-specific strings to help - * distinguish instances ... - */ - - /* maybe allocate device-global string ID */ - if (gser_string_defs[0].id == 0) { - status = usb_string_id(c->cdev); - if (status < 0) - return status; - gser_string_defs[0].id = status; - } - - /* allocate instance-specific interface IDs */ - status = usb_interface_id(c, f); - if (status < 0) - goto fail; - gser->data_id = status; - gser_interface_desc.bInterfaceNumber = status; - - status = -ENODEV; - - /* allocate instance-specific endpoints */ - ep = usb_ep_autoconfig(cdev->gadget, &gser_fs_in_desc); - if (!ep) - goto fail; - gser->port.in = ep; - ep->driver_data = cdev; /* claim */ - - ep = usb_ep_autoconfig(cdev->gadget, &gser_fs_out_desc); - if (!ep) - goto fail; - gser->port.out = ep; - ep->driver_data = cdev; /* claim */ - - /* support all relevant hardware speeds... we expect that when - * hardware is dual speed, all bulk-capable endpoints work at - * both speeds - */ - gser_hs_in_desc.bEndpointAddress = gser_fs_in_desc.bEndpointAddress; - gser_hs_out_desc.bEndpointAddress = gser_fs_out_desc.bEndpointAddress; - - gser_ss_in_desc.bEndpointAddress = gser_fs_in_desc.bEndpointAddress; - gser_ss_out_desc.bEndpointAddress = gser_fs_out_desc.bEndpointAddress; - - status = usb_assign_descriptors(f, gser_fs_function, gser_hs_function, - gser_ss_function); - if (status) - goto fail; - DBG(cdev, "generic ttyGS%d: %s speed IN/%s OUT/%s\n", - gser->port_num, - gadget_is_superspeed(c->cdev->gadget) ? "super" : - gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", - gser->port.in->name, gser->port.out->name); - return 0; - -fail: - /* we might as well release our claims on endpoints */ - if (gser->port.out) - gser->port.out->driver_data = NULL; - if (gser->port.in) - gser->port.in->driver_data = NULL; - - ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); - - return status; -} - -static void gser_free_inst(struct usb_function_instance *f) -{ - struct f_serial_opts *opts; - - opts = container_of(f, struct f_serial_opts, func_inst); - gserial_free_line(opts->port_num); - kfree(opts); -} - -static struct usb_function_instance *gser_alloc_inst(void) -{ - struct f_serial_opts *opts; - int ret; - - opts = kzalloc(sizeof(*opts), GFP_KERNEL); - if (!opts) - return ERR_PTR(-ENOMEM); - - opts->func_inst.free_func_inst = gser_free_inst; - ret = gserial_alloc_line(&opts->port_num); - if (ret) { - kfree(opts); - return ERR_PTR(ret); - } - - return &opts->func_inst; -} - -static void gser_free(struct usb_function *f) -{ - struct f_gser *serial; - - serial = func_to_gser(f); - kfree(serial); -} - -static void gser_unbind(struct usb_configuration *c, struct usb_function *f) -{ - usb_free_all_descriptors(f); -} - -static struct usb_function *gser_alloc(struct usb_function_instance *fi) -{ - struct f_gser *gser; - struct f_serial_opts *opts; - - /* allocate and initialize one new instance */ - gser = kzalloc(sizeof(*gser), GFP_KERNEL); - if (!gser) - return ERR_PTR(-ENOMEM); - - opts = container_of(fi, struct f_serial_opts, func_inst); - - gser->port_num = opts->port_num; - - gser->port.func.name = "gser"; - gser->port.func.strings = gser_strings; - gser->port.func.bind = gser_bind; - gser->port.func.unbind = gser_unbind; - gser->port.func.set_alt = gser_set_alt; - gser->port.func.disable = gser_disable; - gser->port.func.free_func = gser_free; - - return &gser->port.func; -} - -DECLARE_USB_FUNCTION_INIT(gser, gser_alloc_inst, gser_alloc); -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Al Borchers"); -MODULE_AUTHOR("David Brownell"); |