mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-25 22:20:45 +00:00
83d290c56f
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>
103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2016, NVIDIA CORPORATION.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <clk-uclass.h>
|
|
#include <dm.h>
|
|
#include <misc.h>
|
|
#include <asm/arch-tegra/bpmp_abi.h>
|
|
|
|
static ulong tegra186_clk_get_rate(struct clk *clk)
|
|
{
|
|
struct mrq_clk_request req;
|
|
struct mrq_clk_response resp;
|
|
int ret;
|
|
|
|
debug("%s(clk=%p) (dev=%p, id=%lu)\n", __func__, clk, clk->dev,
|
|
clk->id);
|
|
|
|
req.cmd_and_id = (CMD_CLK_GET_RATE << 24) | clk->id;
|
|
|
|
ret = misc_call(clk->dev->parent, MRQ_CLK, &req, sizeof(req), &resp,
|
|
sizeof(resp));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return resp.clk_get_rate.rate;
|
|
}
|
|
|
|
static ulong tegra186_clk_set_rate(struct clk *clk, ulong rate)
|
|
{
|
|
struct mrq_clk_request req;
|
|
struct mrq_clk_response resp;
|
|
int ret;
|
|
|
|
debug("%s(clk=%p, rate=%lu) (dev=%p, id=%lu)\n", __func__, clk, rate,
|
|
clk->dev, clk->id);
|
|
|
|
req.cmd_and_id = (CMD_CLK_SET_RATE << 24) | clk->id;
|
|
req.clk_set_rate.rate = rate;
|
|
|
|
ret = misc_call(clk->dev->parent, MRQ_CLK, &req, sizeof(req), &resp,
|
|
sizeof(resp));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return resp.clk_set_rate.rate;
|
|
}
|
|
|
|
static int tegra186_clk_en_dis(struct clk *clk,
|
|
enum mrq_reset_commands cmd)
|
|
{
|
|
struct mrq_clk_request req;
|
|
struct mrq_clk_response resp;
|
|
int ret;
|
|
|
|
req.cmd_and_id = (cmd << 24) | clk->id;
|
|
|
|
ret = misc_call(clk->dev->parent, MRQ_CLK, &req, sizeof(req), &resp,
|
|
sizeof(resp));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra186_clk_enable(struct clk *clk)
|
|
{
|
|
debug("%s(clk=%p) (dev=%p, id=%lu)\n", __func__, clk, clk->dev,
|
|
clk->id);
|
|
|
|
return tegra186_clk_en_dis(clk, CMD_CLK_ENABLE);
|
|
}
|
|
|
|
static int tegra186_clk_disable(struct clk *clk)
|
|
{
|
|
debug("%s(clk=%p) (dev=%p, id=%lu)\n", __func__, clk, clk->dev,
|
|
clk->id);
|
|
|
|
return tegra186_clk_en_dis(clk, CMD_CLK_DISABLE);
|
|
}
|
|
|
|
static struct clk_ops tegra186_clk_ops = {
|
|
.get_rate = tegra186_clk_get_rate,
|
|
.set_rate = tegra186_clk_set_rate,
|
|
.enable = tegra186_clk_enable,
|
|
.disable = tegra186_clk_disable,
|
|
};
|
|
|
|
static int tegra186_clk_probe(struct udevice *dev)
|
|
{
|
|
debug("%s(dev=%p)\n", __func__, dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_DRIVER(tegra186_clk) = {
|
|
.name = "tegra186_clk",
|
|
.id = UCLASS_CLK,
|
|
.probe = tegra186_clk_probe,
|
|
.ops = &tegra186_clk_ops,
|
|
};
|