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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (c) 2016 Maxime Ripard. All rights reserved.
- */
- #ifndef _HAL_RESET_H_
- #define _HAL_RESET_H_
- #include <aw_list.h>
- #include <sunxi_hal_common.h>
- #include <platform_rst.h>
- typedef enum {
- HAL_SUNXI_RESET = 0,
- HAL_SUNXI_R_RESET,
- HAL_SUNXI_RESET_NUMBER,
- } hal_reset_type_t;
- typedef u32 hal_reset_id_t;
- struct reset_control_dev;
- /**
- * struct reset_control_ops - reset controller driver callbacks
- *
- * @reset: for self-deasserting resets, does all necessary
- * things to reset the device
- * @assert: manually assert the reset line, if supported
- * @deassert: manually deassert the reset line, if supported
- * @status: return the status of the reset line, if supported
- */
- struct reset_control_ops {
- int (*reset)(struct reset_control_dev *rcdev, hal_reset_id_t id);
- int (*assert)(struct reset_control_dev *rcdev, hal_reset_id_t id);
- int (*deassert)(struct reset_control_dev *rcdev, hal_reset_id_t id);
- int (*status)(struct reset_control_dev *rcdev, hal_reset_id_t id);
- };
- /**
- * struct reset_control - reset controller entity that might
- * provide multiple reset controls
- * @ops: a pointer to device specific struct reset_control_ops
- * @owner: kernel module of the reset controller driver
- * @list: internal list of reset controller devices
- * @reset_control_head: head of internal list of requested reset controls
- * @dev: corresponding driver model device struct
- * @of_node: corresponding device tree node as phandle target
- * @of_reset_n_cells: number of cells in reset line specifiers
- * @of_xlate: translation function to translate from specifier as found in the
- * device tree to id as given to the reset control ops
- * @nr_resets: number of reset controls in this reset controller device
- */
- struct reset_control_dev {
- const struct reset_control_ops *ops;
- hal_reset_type_t type;
- u32 nr_resets;
- struct list_head node;
- };
- struct reset_control {
- struct reset_control_dev *rcdev;
- u32 enable_count;
- hal_reset_id_t id;
- };
- int reset_control_register(struct reset_control_dev *rcdev); //for reset system
- int reset_control_unregister(struct reset_control *reset); //for reset system
- struct reset_control *hal_reset_control_get(hal_reset_type_t type, hal_reset_id_t id);
- int hal_reset_control_put(struct reset_control *reset);
- int hal_reset_control_set(struct reset_control *reset); //for other module
- int hal_reset_control_deassert(struct reset_control *reset); //for other module
- int hal_reset_control_assert(struct reset_control *reset); //for other_module
- int hal_reset_control_reset(struct reset_control *reset); //for other_module
- int hal_reset_control_status(struct reset_control *reset); //for other_module
- #endif
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