linux/ulpi/driver.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef __LINUX_ULPI_DRIVER_H
0003 #define __LINUX_ULPI_DRIVER_H
0004
0005 #include <linux/mod_devicetable.h>
0006
0007 #include <linux/device.h>
0008
0009 struct ulpi_ops;
0010
0011 /**
0012  * struct ulpi - describes ULPI PHY device
0013  * @id: vendor and product ids for ULPI device
0014  * @ops: I/O access
0015  * @dev: device interface
0016  */
0017 struct ulpi {
0018     struct ulpi_device_id id;
0019     const struct ulpi_ops *ops;
0020     struct device dev;
0021 };
0022
0023 #define to_ulpi_dev(d) container_of(d, struct ulpi, dev)
0024
0025 static inline void ulpi_set_drvdata(struct ulpi *ulpi, void *data)
0026 {
0027     dev_set_drvdata(&ulpi->dev, data);
0028 }
0029
0030 static inline void *ulpi_get_drvdata(struct ulpi *ulpi)
0031 {
0032     return dev_get_drvdata(&ulpi->dev);
0033 }
0034
0035 /**
0036  * struct ulpi_driver - describes a ULPI PHY driver
0037  * @id_table: array of device identifiers supported by this driver
0038  * @probe: binds this driver to ULPI device
0039  * @remove: unbinds this driver from ULPI device
0040  * @driver: the name and owner members must be initialized by the drivers
0041  */
0042 struct ulpi_driver {
0043     const struct ulpi_device_id *id_table;
0044     int (*probe)(struct ulpi *ulpi);
0045     void (*remove)(struct ulpi *ulpi);
0046     struct device_driver driver;
0047 };
0048
0049 #define to_ulpi_driver(d) container_of(d, struct ulpi_driver, driver)
0050
0051 /*
0052  * use a macro to avoid include chaining to get THIS_MODULE
0053  */
0054 #define ulpi_register_driver(drv) __ulpi_register_driver(drv, THIS_MODULE)
0055 int __ulpi_register_driver(struct ulpi_driver *drv, struct module *module);
0056 void ulpi_unregister_driver(struct ulpi_driver *drv);
0057
0058 #define module_ulpi_driver(__ulpi_driver) \
0059     module_driver(__ulpi_driver, ulpi_register_driver, \
0060               ulpi_unregister_driver)
0061
0062 int ulpi_read(struct ulpi *ulpi, u8 addr);
0063 int ulpi_write(struct ulpi *ulpi, u8 addr, u8 val);
0064
0065 #endif /* __LINUX_ULPI_DRIVER_H */