| 1 | #ifndef _LINUX_RESET_CONTROLLER_H_
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| 2 | #define _LINUX_RESET_CONTROLLER_H_
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| 3 |
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| 4 | #include <linux/list.h>
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| 5 |
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| 6 | struct reset_controller_dev;
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| 7 |
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| 8 | |
| 9 | * struct reset_control_ops
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| 10 | *
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| 11 | * @reset: for self-deasserting resets, does all necessary
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| 12 | * things to reset the device
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| 13 | * @assert: manually assert the reset line, if supported
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| 14 | * @deassert: manually deassert the reset line, if supported
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| 15 |
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| 16 | struct reset_control_ops {
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| 17 | int (*reset)(struct reset_controller_dev *rcdev, unsigned long id);
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| 18 | int (*assert)(struct reset_controller_dev *rcdev, unsigned long id);
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| 19 | int (*deassert)(struct reset_controller_dev *rcdev, unsigned long id);
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| 20 | };
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| 21 |
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| 22 | struct module;
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| 23 | struct device_node;
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| 24 |
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| 25 | |
| 26 | * struct reset_controller_dev - reset controller entity that might
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| 27 | * provide multiple reset controls
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| 28 | * @ops: a pointer to device specific struct reset_control_ops
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| 29 | * @owner: kernel module of the reset controller driver
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| 30 | * @list: internal list of reset controller devices
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| 31 | * @of_node: corresponding device tree node as phandle target
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| 32 | * @of_reset_n_cells: number of cells in reset line specifiers
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| 33 | * @of_xlate: translation function to translate from specifier as found in the
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| 34 | * device tree to id as given to the reset control ops
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| 35 | * @nr_resets: number of reset controls in this reset controller device
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| 36 |
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| 37 | struct reset_controller_dev {
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| 38 | struct reset_control_ops *ops;
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| 39 | struct module *owner;
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| 40 | struct list_head list;
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| 41 | struct device_node *of_node;
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| 42 | int of_reset_n_cells;
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| 43 | int (*of_xlate)(struct reset_controller_dev *rcdev,
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| 44 | const struct of_phandle_args *reset_spec);
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| 45 | unsigned int nr_resets;
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| 46 | };
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| 47 |
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| 48 | int reset_controller_register(struct reset_controller_dev *rcdev);
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| 49 | void reset_controller_unregister(struct reset_controller_dev *rcdev);
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| 50 |
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| 51 | #endif
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