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1ebe88d38d
Let's follow other driver registration functions and automatically set the driver's owner member to THIS_MODULE when ulpi_driver_register() is called. This allows ulpi driver writers to forget about this boiler plate detail and avoids common bugs in the process. Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
#ifndef __LINUX_ULPI_DRIVER_H
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#define __LINUX_ULPI_DRIVER_H
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#include <linux/mod_devicetable.h>
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#include <linux/device.h>
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struct ulpi_ops;
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/**
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* struct ulpi - describes ULPI PHY device
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* @id: vendor and product ids for ULPI device
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* @ops: I/O access
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* @dev: device interface
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*/
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struct ulpi {
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struct ulpi_device_id id;
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struct ulpi_ops *ops;
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struct device dev;
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};
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#define to_ulpi_dev(d) container_of(d, struct ulpi, dev)
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static inline void ulpi_set_drvdata(struct ulpi *ulpi, void *data)
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{
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dev_set_drvdata(&ulpi->dev, data);
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}
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static inline void *ulpi_get_drvdata(struct ulpi *ulpi)
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{
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return dev_get_drvdata(&ulpi->dev);
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}
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/**
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* struct ulpi_driver - describes a ULPI PHY driver
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* @id_table: array of device identifiers supported by this driver
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* @probe: binds this driver to ULPI device
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* @remove: unbinds this driver from ULPI device
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* @driver: the name and owner members must be initialized by the drivers
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*/
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struct ulpi_driver {
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const struct ulpi_device_id *id_table;
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int (*probe)(struct ulpi *ulpi);
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void (*remove)(struct ulpi *ulpi);
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struct device_driver driver;
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};
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#define to_ulpi_driver(d) container_of(d, struct ulpi_driver, driver)
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/*
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* use a macro to avoid include chaining to get THIS_MODULE
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*/
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#define ulpi_register_driver(drv) __ulpi_register_driver(drv, THIS_MODULE)
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int __ulpi_register_driver(struct ulpi_driver *drv, struct module *module);
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void ulpi_unregister_driver(struct ulpi_driver *drv);
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#define module_ulpi_driver(__ulpi_driver) \
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module_driver(__ulpi_driver, ulpi_register_driver, \
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ulpi_unregister_driver)
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int ulpi_read(struct ulpi *ulpi, u8 addr);
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int ulpi_write(struct ulpi *ulpi, u8 addr, u8 val);
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#endif /* __LINUX_ULPI_DRIVER_H */
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