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61 lines
2.1 KiB
61 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_RESET_CONTROLLER_H_ |
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#define _LINUX_RESET_CONTROLLER_H_ |
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#include <linux/list.h> |
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struct reset_controller_dev; |
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/** |
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* struct reset_control_ops |
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* |
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* @reset: for self-deasserting resets, does all necessary |
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* things to reset the device |
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* @assert: manually assert the reset line, if supported |
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* @deassert: manually deassert the reset line, if supported |
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* @status: return the status of the reset line, if supported |
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*/ |
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struct reset_control_ops { |
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int (*reset)(struct reset_controller_dev *rcdev, unsigned long id); |
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int (*assert)(struct reset_controller_dev *rcdev, unsigned long id); |
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int (*deassert)(struct reset_controller_dev *rcdev, unsigned long id); |
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int (*status)(struct reset_controller_dev *rcdev, unsigned long id); |
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}; |
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struct module; |
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struct device_node; |
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struct of_phandle_args; |
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/** |
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* struct reset_controller_dev - reset controller entity that might |
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* provide multiple reset controls |
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* @ops: a pointer to device specific struct reset_control_ops |
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* @owner: kernel module of the reset controller driver |
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* @list: internal list of reset controller devices |
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* @reset_control_head: head of internal list of requested reset controls |
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* @of_node: corresponding device tree node as phandle target |
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* @of_reset_n_cells: number of cells in reset line specifiers |
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* @of_xlate: translation function to translate from specifier as found in the |
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* device tree to id as given to the reset control ops |
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* @nr_resets: number of reset controls in this reset controller device |
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*/ |
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struct reset_controller_dev { |
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const struct reset_control_ops *ops; |
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struct module *owner; |
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struct list_head list; |
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struct list_head reset_control_head; |
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struct device_node *of_node; |
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int of_reset_n_cells; |
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int (*of_xlate)(struct reset_controller_dev *rcdev, |
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const struct of_phandle_args *reset_spec); |
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unsigned int nr_resets; |
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}; |
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int reset_controller_register(struct reset_controller_dev *rcdev); |
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void reset_controller_unregister(struct reset_controller_dev *rcdev); |
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struct device; |
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int devm_reset_controller_register(struct device *dev, |
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struct reset_controller_dev *rcdev); |
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#endif
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