mirror of https://github.com/torvalds/linux.git
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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/*
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* Amlogic Meson Reset Auxiliary driver
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*
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* Copyright (c) 2024 BayLibre, SAS.
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* Author: Jerome Brunet <jbrunet@baylibre.com>
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*/
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/auxiliary_bus.h>
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#include <linux/regmap.h>
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#include <linux/reset-controller.h>
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#include "reset-meson.h"
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static const struct meson_reset_param meson_a1_audio_param = {
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.reset_ops = &meson_reset_toggle_ops,
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.reset_num = 32,
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.level_offset = 0x28,
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};
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static const struct meson_reset_param meson_a1_audio_vad_param = {
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.reset_ops = &meson_reset_toggle_ops,
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.reset_num = 6,
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.level_offset = 0x8,
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};
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static const struct meson_reset_param meson_g12a_audio_param = {
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.reset_ops = &meson_reset_toggle_ops,
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.reset_num = 26,
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.level_offset = 0x24,
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};
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static const struct meson_reset_param meson_sm1_audio_param = {
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.reset_ops = &meson_reset_toggle_ops,
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.reset_num = 39,
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.level_offset = 0x28,
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};
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static const struct auxiliary_device_id meson_reset_aux_ids[] = {
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{
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.name = "a1-audio-clkc.rst-a1",
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.driver_data = (kernel_ulong_t)&meson_a1_audio_param,
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}, {
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.name = "a1-audio-clkc.rst-a1-vad",
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.driver_data = (kernel_ulong_t)&meson_a1_audio_vad_param,
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}, {
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.name = "axg-audio-clkc.rst-g12a",
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.driver_data = (kernel_ulong_t)&meson_g12a_audio_param,
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}, {
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.name = "axg-audio-clkc.rst-sm1",
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.driver_data = (kernel_ulong_t)&meson_sm1_audio_param,
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}, {}
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};
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MODULE_DEVICE_TABLE(auxiliary, meson_reset_aux_ids);
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static int meson_reset_aux_probe(struct auxiliary_device *adev,
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const struct auxiliary_device_id *id)
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{
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const struct meson_reset_param *param =
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(const struct meson_reset_param *)(id->driver_data);
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struct regmap *map;
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map = dev_get_regmap(adev->dev.parent, NULL);
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if (!map)
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return -EINVAL;
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return meson_reset_controller_register(&adev->dev, map, param);
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}
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static struct auxiliary_driver meson_reset_aux_driver = {
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.probe = meson_reset_aux_probe,
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.id_table = meson_reset_aux_ids,
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};
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module_auxiliary_driver(meson_reset_aux_driver);
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MODULE_DESCRIPTION("Amlogic Meson Reset Auxiliary driver");
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MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_IMPORT_NS("MESON_RESET");
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