diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pse-pd/pse.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/linux/pse-pd/pse.h b/include/linux/pse-pd/pse.h new file mode 100644 index 000000000000..3ba787a48b15 --- /dev/null +++ b/include/linux/pse-pd/pse.h @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* +// Copyright (c) 2022 Pengutronix, Oleksij Rempel <kernel@pengutronix.de> + */ +#ifndef _LINUX_PSE_CONTROLLER_H +#define _LINUX_PSE_CONTROLLER_H + +#include <linux/ethtool.h> +#include <linux/list.h> +#include <uapi/linux/ethtool.h> + +struct module; +struct device_node; +struct of_phandle_args; +struct pse_control; + +/** + * struct pse_controller_dev - PSE controller entity that might + * provide multiple PSE controls + * @ops: a pointer to device specific struct pse_controller_ops + * @owner: kernel module of the PSE controller driver + * @list: internal list of PSE controller devices + * @pse_control_head: head of internal list of requested PSE controls + * @dev: corresponding driver model device struct + * @of_pse_n_cells: number of cells in PSE line specifiers + * @of_xlate: translation function to translate from specifier as found in the + * device tree to id as given to the PSE control ops + * @nr_lines: number of PSE controls in this controller device + * @lock: Mutex for serialization access to the PSE controller + */ +struct pse_controller_dev { + const struct pse_controller_ops *ops; + struct module *owner; + struct list_head list; + struct list_head pse_control_head; + struct device *dev; + int of_pse_n_cells; + int (*of_xlate)(struct pse_controller_dev *pcdev, + const struct of_phandle_args *pse_spec); + unsigned int nr_lines; + struct mutex lock; +}; + +#if IS_ENABLED(CONFIG_PSE_CONTROLLER) +int pse_controller_register(struct pse_controller_dev *pcdev); +void pse_controller_unregister(struct pse_controller_dev *pcdev); +struct device; +int devm_pse_controller_register(struct device *dev, + struct pse_controller_dev *pcdev); + +struct pse_control *of_pse_control_get(struct device_node *node); +void pse_control_put(struct pse_control *psec); + +#else + +static inline struct pse_control *of_pse_control_get(struct device_node *node) +{ + return ERR_PTR(-ENOENT); +} + +static inline void pse_control_put(struct pse_control *psec) +{ +} + +#endif + +#endif |