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u-boot/drivers/reset/tegra-car-reset.c

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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>
2018-05-06 21:58:06 +00:00
// SPDX-License-Identifier: GPL-2.0
reset: implement a driver for the Tegra CAR Implement a reset uclass driver for the Tegra CAR. This allows clients to use standard reset APIs on Tegra. This device is intended to be instantiated by the core Tegra CAR driver, rather than being instantiated directly from DT. The implementation uses the existing custom Tegra- specific reset APIs to avoid coupling the series with significant refactoring of the existing Tegra clock/reset code. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-13 16:45:58 +00:00
/*
* Copyright (c) 2016, NVIDIA CORPORATION.
*/
#include <common.h>
#include <dm.h>
common: Drop log.h from common header Move this header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-10 17:40:05 +00:00
#include <log.h>
dm: core: Create a new header file for 'compat' features At present dm/device.h includes the linux-compatible features. This requires including linux/compat.h which in turn includes a lot of headers. One of these is malloc.h which we thus end up including in every file in U-Boot. Apart from the inefficiency of this, it is problematic for sandbox which needs to use the system malloc() in some files. Move the compatibility features into a separate header file. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-02-03 14:36:16 +00:00
#include <malloc.h>
reset: implement a driver for the Tegra CAR Implement a reset uclass driver for the Tegra CAR. This allows clients to use standard reset APIs on Tegra. This device is intended to be instantiated by the core Tegra CAR driver, rather than being instantiated directly from DT. The implementation uses the existing custom Tegra- specific reset APIs to avoid coupling the series with significant refactoring of the existing Tegra clock/reset code. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-13 16:45:58 +00:00
#include <reset-uclass.h>
#include <asm/arch/clock.h>
#include <asm/arch-tegra/clk_rst.h>
static int tegra_car_reset_request(struct reset_ctl *reset_ctl)
{
debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
reset_ctl->dev, reset_ctl->id);
/* PERIPH_ID_COUNT varies per SoC */
if (reset_ctl->id >= PERIPH_ID_COUNT)
return -EINVAL;
return 0;
}
static int tegra_car_reset_assert(struct reset_ctl *reset_ctl)
{
debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
reset_ctl->dev, reset_ctl->id);
reset_set_enable(reset_ctl->id, 1);
return 0;
}
static int tegra_car_reset_deassert(struct reset_ctl *reset_ctl)
{
debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
reset_ctl->dev, reset_ctl->id);
reset_set_enable(reset_ctl->id, 0);
return 0;
}
struct reset_ops tegra_car_reset_ops = {
.request = tegra_car_reset_request,
.rst_assert = tegra_car_reset_assert,
.rst_deassert = tegra_car_reset_deassert,
};
U_BOOT_DRIVER(tegra_car_reset) = {
.name = "tegra_car_reset",
.id = UCLASS_RESET,
.ops = &tegra_car_reset_ops,
};
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