swh:1:snp:3c665ee4f67729f27f2e40193ab88e7298cf0fef
Tip revision: 11da3a7f84f19c26da6f86af878298694ede0804 authored by Linus Torvalds on 10 September 2018, 00:26:43 UTC
Linux 4.19-rc3
Linux 4.19-rc3
Tip revision: 11da3a7
reset-bpmp.c
/*
* Copyright (C) 2016 NVIDIA Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/reset-controller.h>
#include <soc/tegra/bpmp.h>
#include <soc/tegra/bpmp-abi.h>
static struct tegra_bpmp *to_tegra_bpmp(struct reset_controller_dev *rstc)
{
return container_of(rstc, struct tegra_bpmp, rstc);
}
static int tegra_bpmp_reset_common(struct reset_controller_dev *rstc,
enum mrq_reset_commands command,
unsigned int id)
{
struct tegra_bpmp *bpmp = to_tegra_bpmp(rstc);
struct mrq_reset_request request;
struct tegra_bpmp_message msg;
memset(&request, 0, sizeof(request));
request.cmd = command;
request.reset_id = id;
memset(&msg, 0, sizeof(msg));
msg.mrq = MRQ_RESET;
msg.tx.data = &request;
msg.tx.size = sizeof(request);
return tegra_bpmp_transfer(bpmp, &msg);
}
static int tegra_bpmp_reset_module(struct reset_controller_dev *rstc,
unsigned long id)
{
return tegra_bpmp_reset_common(rstc, CMD_RESET_MODULE, id);
}
static int tegra_bpmp_reset_assert(struct reset_controller_dev *rstc,
unsigned long id)
{
return tegra_bpmp_reset_common(rstc, CMD_RESET_ASSERT, id);
}
static int tegra_bpmp_reset_deassert(struct reset_controller_dev *rstc,
unsigned long id)
{
return tegra_bpmp_reset_common(rstc, CMD_RESET_DEASSERT, id);
}
static const struct reset_control_ops tegra_bpmp_reset_ops = {
.reset = tegra_bpmp_reset_module,
.assert = tegra_bpmp_reset_assert,
.deassert = tegra_bpmp_reset_deassert,
};
int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp)
{
bpmp->rstc.ops = &tegra_bpmp_reset_ops;
bpmp->rstc.owner = THIS_MODULE;
bpmp->rstc.of_node = bpmp->dev->of_node;
bpmp->rstc.nr_resets = bpmp->soc->num_resets;
return devm_reset_controller_register(bpmp->dev, &bpmp->rstc);
}