mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-17 08:43:07 +00:00
0be4b0b651
In case the ops is not implemented, return 0 in the core right away. This is better than having multiple copies of functions which just return 0 in each reset driver. Drop all those empty functions. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@konsulko.com>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Raspberry Pi 4 firmware reset driver
|
|
*
|
|
* Copyright (C) 2020 Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
|
|
*/
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <reset-uclass.h>
|
|
#include <asm/arch/msg.h>
|
|
#include <dt-bindings/reset/raspberrypi,firmware-reset.h>
|
|
|
|
static int raspberrypi_reset_request(struct reset_ctl *reset_ctl)
|
|
{
|
|
if (reset_ctl->id >= RASPBERRYPI_FIRMWARE_RESET_NUM_IDS)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int raspberrypi_reset_assert(struct reset_ctl *reset_ctl)
|
|
{
|
|
switch (reset_ctl->id) {
|
|
case RASPBERRYPI_FIRMWARE_RESET_ID_USB:
|
|
bcm2711_notify_vl805_reset();
|
|
return 0;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
struct reset_ops raspberrypi_reset_ops = {
|
|
.request = raspberrypi_reset_request,
|
|
.rst_assert = raspberrypi_reset_assert,
|
|
};
|
|
|
|
static const struct udevice_id raspberrypi_reset_ids[] = {
|
|
{ .compatible = "raspberrypi,firmware-reset" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(raspberrypi_reset) = {
|
|
.name = "raspberrypi-reset",
|
|
.id = UCLASS_RESET,
|
|
.of_match = raspberrypi_reset_ids,
|
|
.ops = &raspberrypi_reset_ops,
|
|
};
|