u-boot/drivers/usb/emul/sandbox_keyb.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

237 lines
5.4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <dm.h>
#include <os.h>
#include <scsi.h>
#include <usb.h>
/*
* This driver emulates a USB keyboard using the USB HID specification (boot
* protocol)
*/
enum {
SANDBOX_KEYB_EP_IN = 1, /* endpoints */
};
enum cmd_phase {
PHASE_START,
PHASE_DATA,
PHASE_STATUS,
};
enum {
STRINGID_MANUFACTURER = 1,
STRINGID_PRODUCT,
STRINGID_SERIAL,
STRINGID_COUNT,
};
/**
* struct sandbox_keyb_priv - private state for this driver
*
*/
struct sandbox_keyb_priv {
struct membuff in;
};
struct sandbox_keyb_plat {
struct usb_string keyb_strings[STRINGID_COUNT];
};
static struct usb_device_descriptor keyb_device_desc = {
.bLength = sizeof(keyb_device_desc),
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = __constant_cpu_to_le16(0x0100),
.bDeviceClass = 0,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.idVendor = __constant_cpu_to_le16(0x1234),
.idProduct = __constant_cpu_to_le16(0x5679),
.iManufacturer = STRINGID_MANUFACTURER,
.iProduct = STRINGID_PRODUCT,
.iSerialNumber = STRINGID_SERIAL,
.bNumConfigurations = 1,
};
static struct usb_config_descriptor keyb_config0 = {
.bLength = sizeof(keyb_config0),
.bDescriptorType = USB_DT_CONFIG,
/* wTotalLength is set up by usb-emul-uclass */
.bNumInterfaces = 2,
.bConfigurationValue = 0,
.iConfiguration = 0,
.bmAttributes = 1 << 7 | 1 << 5,
.bMaxPower = 50,
};
static struct usb_interface_descriptor keyb_interface0 = {
.bLength = sizeof(keyb_interface0),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = USB_SUB_HID_BOOT,
.bInterfaceProtocol = USB_PROT_HID_KEYBOARD,
.iInterface = 0,
};
static struct usb_class_hid_descriptor keyb_report0 = {
.bLength = sizeof(keyb_report0),
.bDescriptorType = USB_DT_HID,
.bcdCDC = 0x101,
.bCountryCode = 0,
.bNumDescriptors = 1,
.bDescriptorType0 = USB_DT_HID_REPORT,
.wDescriptorLength0 = 0x3f,
};
static struct usb_endpoint_descriptor keyb_endpoint0_in = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = SANDBOX_KEYB_EP_IN | USB_ENDPOINT_DIR_MASK,
.bmAttributes = USB_ENDPOINT_XFER_BULK |
USB_ENDPOINT_XFER_ISOC,
.wMaxPacketSize = __constant_cpu_to_le16(8),
.bInterval = 0xa,
};
static struct usb_interface_descriptor keyb_interface1 = {
.bLength = sizeof(keyb_interface1),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 1,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = USB_SUB_HID_BOOT,
.bInterfaceProtocol = USB_PROT_HID_MOUSE,
.iInterface = 0,
};
static struct usb_class_hid_descriptor keyb_report1 = {
.bLength = sizeof(struct usb_class_hid_descriptor),
.bDescriptorType = USB_DT_HID,
.bcdCDC = 0x101,
.bCountryCode = 0,
.bNumDescriptors = 1,
.bDescriptorType0 = USB_DT_HID_REPORT,
.wDescriptorLength0 = 0x32,
};
static struct usb_endpoint_descriptor keyb_endpoint1_in = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = SANDBOX_KEYB_EP_IN | USB_ENDPOINT_DIR_MASK,
.bmAttributes = USB_ENDPOINT_XFER_BULK |
USB_ENDPOINT_XFER_ISOC,
.wMaxPacketSize = __constant_cpu_to_le16(8),
.bInterval = 0xa,
};
static void *keyb_desc_list[] = {
&keyb_device_desc,
&keyb_config0,
&keyb_interface0,
&keyb_report0,
&keyb_endpoint0_in,
&keyb_interface1,
&keyb_report1,
&keyb_endpoint1_in,
NULL,
};
int sandbox_usb_keyb_add_string(struct udevice *dev, const char *str)
{
struct sandbox_keyb_priv *priv = dev_get_priv(dev);
int len, ret;
len = strlen(str);
ret = membuff_put(&priv->in, str, len);
if (ret != len)
return -ENOSPC;
return 0;
}
static int sandbox_keyb_control(struct udevice *dev, struct usb_device *udev,
unsigned long pipe, void *buff, int len,
struct devrequest *setup)
{
debug("pipe=%lx\n", pipe);
return -EIO;
}
static int sandbox_keyb_interrupt(struct udevice *dev, struct usb_device *udev,
unsigned long pipe, void *buffer, int length, int interval)
{
struct sandbox_keyb_priv *priv = dev_get_priv(dev);
uint8_t *data = buffer;
int ch;
memset(data, '\0', length);
ch = membuff_getbyte(&priv->in);
if (ch != -1)
data[2] = 4 + ch - 'a';
return 0;
}
static int sandbox_keyb_bind(struct udevice *dev)
{
struct sandbox_keyb_plat *plat = dev_get_platdata(dev);
struct usb_string *fs;
fs = plat->keyb_strings;
fs[0].id = STRINGID_MANUFACTURER;
fs[0].s = "sandbox";
fs[1].id = STRINGID_PRODUCT;
fs[1].s = "keyboard";
fs[2].id = STRINGID_SERIAL;
fs[2].s = dev->name;
return usb_emul_setup_device(dev, plat->keyb_strings, keyb_desc_list);
}
static int sandbox_keyb_probe(struct udevice *dev)
{
struct sandbox_keyb_priv *priv = dev_get_priv(dev);
return membuff_new(&priv->in, 256);
}
static const struct dm_usb_ops sandbox_usb_keyb_ops = {
.control = sandbox_keyb_control,
.interrupt = sandbox_keyb_interrupt,
};
static const struct udevice_id sandbox_usb_keyb_ids[] = {
{ .compatible = "sandbox,usb-keyb" },
{ }
};
U_BOOT_DRIVER(usb_sandbox_keyb) = {
.name = "usb_sandbox_keyb",
.id = UCLASS_USB_EMUL,
.of_match = sandbox_usb_keyb_ids,
.bind = sandbox_keyb_bind,
.probe = sandbox_keyb_probe,
.ops = &sandbox_usb_keyb_ops,
.priv_auto_alloc_size = sizeof(struct sandbox_keyb_priv),
.platdata_auto_alloc_size = sizeof(struct sandbox_keyb_plat),
};