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68 lines
1.7 KiB
68 lines
1.7 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2016 NVIDIA Corporation |
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*/ |
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#include <linux/reset-controller.h> |
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#include <soc/tegra/bpmp.h> |
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#include <soc/tegra/bpmp-abi.h> |
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static struct tegra_bpmp *to_tegra_bpmp(struct reset_controller_dev *rstc) |
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{ |
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return container_of(rstc, struct tegra_bpmp, rstc); |
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} |
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static int tegra_bpmp_reset_common(struct reset_controller_dev *rstc, |
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enum mrq_reset_commands command, |
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unsigned int id) |
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{ |
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struct tegra_bpmp *bpmp = to_tegra_bpmp(rstc); |
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struct mrq_reset_request request; |
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struct tegra_bpmp_message msg; |
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memset(&request, 0, sizeof(request)); |
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request.cmd = command; |
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request.reset_id = id; |
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memset(&msg, 0, sizeof(msg)); |
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msg.mrq = MRQ_RESET; |
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msg.tx.data = &request; |
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msg.tx.size = sizeof(request); |
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return tegra_bpmp_transfer(bpmp, &msg); |
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} |
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static int tegra_bpmp_reset_module(struct reset_controller_dev *rstc, |
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unsigned long id) |
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{ |
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return tegra_bpmp_reset_common(rstc, CMD_RESET_MODULE, id); |
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} |
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static int tegra_bpmp_reset_assert(struct reset_controller_dev *rstc, |
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unsigned long id) |
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{ |
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return tegra_bpmp_reset_common(rstc, CMD_RESET_ASSERT, id); |
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} |
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static int tegra_bpmp_reset_deassert(struct reset_controller_dev *rstc, |
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unsigned long id) |
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{ |
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return tegra_bpmp_reset_common(rstc, CMD_RESET_DEASSERT, id); |
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} |
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static const struct reset_control_ops tegra_bpmp_reset_ops = { |
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.reset = tegra_bpmp_reset_module, |
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.assert = tegra_bpmp_reset_assert, |
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.deassert = tegra_bpmp_reset_deassert, |
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}; |
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int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp) |
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{ |
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bpmp->rstc.ops = &tegra_bpmp_reset_ops; |
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bpmp->rstc.owner = THIS_MODULE; |
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bpmp->rstc.of_node = bpmp->dev->of_node; |
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bpmp->rstc.nr_resets = bpmp->soc->num_resets; |
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return devm_reset_controller_register(bpmp->dev, &bpmp->rstc); |
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}
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