mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-10 05:06:16 +09:00
59592b99d8
Add support to get maximum speed from dt so that usb drivers makes use of it for DT parsing. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> (rebase and fix errors) Reviewed-by: Simon Glass <sjg@chromium.org>
69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Provides code common for host and device side USB.
|
|
*
|
|
* (C) Copyright 2016
|
|
* Texas Instruments Incorporated, <www.ti.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <linux/libfdt.h>
|
|
#include <linux/usb/otg.h>
|
|
#include <linux/usb/ch9.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static const char *const usb_dr_modes[] = {
|
|
[USB_DR_MODE_UNKNOWN] = "",
|
|
[USB_DR_MODE_HOST] = "host",
|
|
[USB_DR_MODE_PERIPHERAL] = "peripheral",
|
|
[USB_DR_MODE_OTG] = "otg",
|
|
};
|
|
|
|
enum usb_dr_mode usb_get_dr_mode(int node)
|
|
{
|
|
const void *fdt = gd->fdt_blob;
|
|
const char *dr_mode;
|
|
int i;
|
|
|
|
dr_mode = fdt_getprop(fdt, node, "dr_mode", NULL);
|
|
if (!dr_mode) {
|
|
pr_err("usb dr_mode not found\n");
|
|
return USB_DR_MODE_UNKNOWN;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++)
|
|
if (!strcmp(dr_mode, usb_dr_modes[i]))
|
|
return i;
|
|
|
|
return USB_DR_MODE_UNKNOWN;
|
|
}
|
|
|
|
static const char *const speed_names[] = {
|
|
[USB_SPEED_UNKNOWN] = "UNKNOWN",
|
|
[USB_SPEED_LOW] = "low-speed",
|
|
[USB_SPEED_FULL] = "full-speed",
|
|
[USB_SPEED_HIGH] = "high-speed",
|
|
[USB_SPEED_WIRELESS] = "wireless",
|
|
[USB_SPEED_SUPER] = "super-speed",
|
|
};
|
|
|
|
enum usb_device_speed usb_get_maximum_speed(int node)
|
|
{
|
|
const void *fdt = gd->fdt_blob;
|
|
const char *max_speed;
|
|
int i;
|
|
|
|
max_speed = fdt_getprop(fdt, node, "maximum-speed", NULL);
|
|
if (!max_speed) {
|
|
pr_err("usb maximum-speed not found\n");
|
|
return USB_SPEED_UNKNOWN;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(speed_names); i++)
|
|
if (!strcmp(max_speed, speed_names[i]))
|
|
return i;
|
|
|
|
return USB_SPEED_UNKNOWN;
|
|
}
|