| 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 | * @status: return the status of the reset line, if supported
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| 16 |
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| 17 | struct reset_control_ops {
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| 18 | int (*reset)(struct reset_controller_dev *rcdev, unsigned long id);
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| 19 | int (*assert)(struct reset_controller_dev *rcdev, unsigned long id);
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| 20 | int (*deassert)(struct reset_controller_dev *rcdev, unsigned long id);
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| 21 | int (*status)(struct reset_controller_dev *rcdev, unsigned long id);
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| 22 | };
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| 23 |
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| 24 | struct module;
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| 25 | struct device_node;
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| 26 | struct of_phandle_args;
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| 27 |
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| 28 | |
| 29 | * struct reset_controller_dev - reset controller entity that might
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| 30 | * provide multiple reset controls
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| 31 | * @ops: a pointer to device specific struct reset_control_ops
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| 32 | * @owner: kernel module of the reset controller driver
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| 33 | * @list: internal list of reset controller devices
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| 34 | * @reset_control_head: head of internal list of requested reset controls
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| 35 | * @of_node: corresponding device tree node as phandle target
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| 36 | * @of_reset_n_cells: number of cells in reset line specifiers
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| 37 | * @of_xlate: translation function to translate from specifier as found in the
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| 38 | * device tree to id as given to the reset control ops
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| 39 | * @nr_resets: number of reset controls in this reset controller device
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| 40 |
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| 41 | struct reset_controller_dev {
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| 42 | const struct reset_control_ops *ops;
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| 43 | struct module *owner;
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| 44 | struct list_head list;
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| 45 | struct list_head reset_control_head;
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| 46 | struct device_node *of_node;
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| 47 | int of_reset_n_cells;
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| 48 | int (*of_xlate)(struct reset_controller_dev *rcdev,
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| 49 | const struct of_phandle_args *reset_spec);
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| 50 | unsigned int nr_resets;
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| 51 | };
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| 52 |
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| 53 | int reset_controller_register(struct reset_controller_dev *rcdev);
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| 54 | void reset_controller_unregister(struct reset_controller_dev *rcdev);
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| 55 |
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| 56 | struct device;
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| 57 | int devm_reset_controller_register(struct device *dev,
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| 58 | struct reset_controller_dev *rcdev);
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| 59 |
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| 60 | #endif
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