udlfb.c (ed9de4ed39875706607fb08118a58344ae6c5f42) udlfb.c (537adba4083ed858db4b5129ea78a820a6fb2edc)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * udlfb.c -- Framebuffer driver for DisplayLink USB controller
4 *
5 * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
6 * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
7 * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
8 *

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1538};
1539
1540/*
1541 * This is necessary before we can communicate with the display controller.
1542 */
1543static int dlfb_select_std_channel(struct dlfb_data *dlfb)
1544{
1545 int ret;
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * udlfb.c -- Framebuffer driver for DisplayLink USB controller
4 *
5 * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
6 * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
7 * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
8 *

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1538};
1539
1540/*
1541 * This is necessary before we can communicate with the display controller.
1542 */
1543static int dlfb_select_std_channel(struct dlfb_data *dlfb)
1544{
1545 int ret;
1546 void *buf;
1547 static const u8 set_def_chn[] = {
1548 0x57, 0xCD, 0xDC, 0xA7,
1549 0x1C, 0x88, 0x5E, 0x15,
1550 0x60, 0xFE, 0xC6, 0x97,
1551 0x16, 0x3D, 0x47, 0xF2 };
1552
1546 static const u8 set_def_chn[] = {
1547 0x57, 0xCD, 0xDC, 0xA7,
1548 0x1C, 0x88, 0x5E, 0x15,
1549 0x60, 0xFE, 0xC6, 0x97,
1550 0x16, 0x3D, 0x47, 0xF2 };
1551
1553 buf = kmemdup(set_def_chn, sizeof(set_def_chn), GFP_KERNEL);
1554
1555 if (!buf)
1556 return -ENOMEM;
1557
1558 ret = usb_control_msg(dlfb->udev, usb_sndctrlpipe(dlfb->udev, 0),
1559 NR_USB_REQUEST_CHANNEL,
1552 ret = usb_control_msg_send(dlfb->udev, 0, NR_USB_REQUEST_CHANNEL,
1560 (USB_DIR_OUT | USB_TYPE_VENDOR), 0, 0,
1553 (USB_DIR_OUT | USB_TYPE_VENDOR), 0, 0,
1561 buf, sizeof(set_def_chn), USB_CTRL_SET_TIMEOUT);
1554 &set_def_chn, sizeof(set_def_chn), USB_CTRL_SET_TIMEOUT,
1555 GFP_KERNEL);
1562
1556
1563 kfree(buf);
1564
1565 return ret;
1566}
1567
1568static int dlfb_parse_vendor_descriptor(struct dlfb_data *dlfb,
1569 struct usb_interface *intf)
1570{
1571 char *desc;
1572 char *buf;

--- 437 unchanged lines hidden --- 		1557 return ret;
1558}
1559
1560static int dlfb_parse_vendor_descriptor(struct dlfb_data *dlfb,
1561 struct usb_interface *intf)
1562{
1563 char *desc;
1564 char *buf;

--- 437 unchanged lines hidden ---