// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* * Amlogic Meson Reset Controller driver * * Copyright (c) 2016-2024 BayLibre, SAS. * Authors: Neil Armstrong * Jerome Brunet */ #include #include #include #include #include #include #include #include "reset-meson.h" static const struct meson_reset_param meson8b_param = { .reset_ops = &meson_reset_ops, .reset_num = 256, .reset_offset = 0x0, .level_offset = 0x7c, .level_low_reset = true, }; static const struct meson_reset_param meson_a1_param = { .reset_ops = &meson_reset_ops, .reset_num = 96, .reset_offset = 0x0, .level_offset = 0x40, .level_low_reset = true, }; static const struct meson_reset_param meson_s4_param = { .reset_ops = &meson_reset_ops, .reset_num = 192, .reset_offset = 0x0, .level_offset = 0x40, .level_low_reset = true, }; static const struct meson_reset_param t7_param = { .reset_num = 224, .reset_offset = 0x0, .level_offset = 0x40, .level_low_reset = true, }; static const struct of_device_id meson_reset_dt_ids[] = { { .compatible = "amlogic,meson8b-reset", .data = &meson8b_param}, { .compatible = "amlogic,meson-gxbb-reset", .data = &meson8b_param}, { .compatible = "amlogic,meson-axg-reset", .data = &meson8b_param}, { .compatible = "amlogic,meson-a1-reset", .data = &meson_a1_param}, { .compatible = "amlogic,meson-s4-reset", .data = &meson_s4_param}, { .compatible = "amlogic,c3-reset", .data = &meson_s4_param}, { .compatible = "amlogic,t7-reset", .data = &t7_param}, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, meson_reset_dt_ids); static const struct regmap_config regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, }; static int meson_reset_probe(struct platform_device *pdev) { const struct meson_reset_param *param; struct device *dev = &pdev->dev; struct regmap *map; void __iomem *base; base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) return PTR_ERR(base); param = device_get_match_data(dev); if (!param) return -ENODEV; map = devm_regmap_init_mmio(dev, base, ®map_config); if (IS_ERR(map)) return dev_err_probe(dev, PTR_ERR(map), "can't init regmap mmio region\n"); return meson_reset_controller_register(dev, map, param); } static struct platform_driver meson_reset_driver = { .probe = meson_reset_probe, .driver = { .name = "meson_reset", .of_match_table = meson_reset_dt_ids, }, }; module_platform_driver(meson_reset_driver); MODULE_DESCRIPTION("Amlogic Meson Reset Controller driver"); MODULE_AUTHOR("Neil Armstrong "); MODULE_AUTHOR("Jerome Brunet "); MODULE_LICENSE("Dual BSD/GPL"); MODULE_IMPORT_NS("MESON_RESET");