include/linux/ulpi/driver.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __LINUX_ULPI_DRIVER_H
   3 #define __LINUX_ULPI_DRIVER_H
   4
   5 #include <linux/mod_devicetable.h>
   6
   7 #include <linux/device.h>
   8
   9 struct ulpi_ops;
  10
  11 /**
  12  * struct ulpi - describes ULPI PHY device
  13  * @id: vendor and product ids for ULPI device
  14  * @ops: I/O access
  15  * @dev: device interface
  16  */
  17 struct ulpi {
  18         struct ulpi_device_id id;
  19         const struct ulpi_ops *ops;
  20         struct device dev;
  21 };
  22
  23 #define to_ulpi_dev(d) container_of(d, struct ulpi, dev)
  24
  25 static inline void ulpi_set_drvdata(struct ulpi *ulpi, void *data)
  26 {
  27         dev_set_drvdata(&ulpi->dev, data);
  28 }
  29
  30 static inline void *ulpi_get_drvdata(struct ulpi *ulpi)
  31 {
  32         return dev_get_drvdata(&ulpi->dev);
  33 }
  34
  35 /**
  36  * struct ulpi_driver - describes a ULPI PHY driver
  37  * @id_table: array of device identifiers supported by this driver
  38  * @probe: binds this driver to ULPI device
  39  * @remove: unbinds this driver from ULPI device
  40  * @driver: the name and owner members must be initialized by the drivers
  41  */
  42 struct ulpi_driver {
  43         const struct ulpi_device_id *id_table;
  44         int (*probe)(struct ulpi *ulpi);
  45         void (*remove)(struct ulpi *ulpi);
  46         struct device_driver driver;
  47 };
  48
  49 #define to_ulpi_driver(d) container_of(d, struct ulpi_driver, driver)
  50
  51 /*
  52  * use a macro to avoid include chaining to get THIS_MODULE
  53  */
  54 #define ulpi_register_driver(drv) __ulpi_register_driver(drv, THIS_MODULE)
  55 int __ulpi_register_driver(struct ulpi_driver *drv, struct module *module);
  56 void ulpi_unregister_driver(struct ulpi_driver *drv);
  57
  58 #define module_ulpi_driver(__ulpi_driver) \
  59         module_driver(__ulpi_driver, ulpi_register_driver, \
  60                       ulpi_unregister_driver)
  61
  62 int ulpi_read(struct ulpi *ulpi, u8 addr);
  63 int ulpi_write(struct ulpi *ulpi, u8 addr, u8 val);
  64
  65 #endif /* __LINUX_ULPI_DRIVER_H */