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1/* SPDX-License-Identifier: GPL-2.02 *3 * Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>4 */5 6#ifndef __SOUND_AC97_CODEC2_H7#define __SOUND_AC97_CODEC2_H8 9#include <linux/device.h>10 11#define AC97_ID(vendor_id1, vendor_id2) \12 ((((vendor_id1) & 0xffff) << 16) | ((vendor_id2) & 0xffff))13#define AC97_DRIVER_ID(vendor_id1, vendor_id2, mask_id1, mask_id2, _data) \14 { .id = (((vendor_id1) & 0xffff) << 16) | ((vendor_id2) & 0xffff), \15 .mask = (((mask_id1) & 0xffff) << 16) | ((mask_id2) & 0xffff), \16 .data = (_data) }17 18struct ac97_controller;19struct clk;20 21/**22 * struct ac97_id - matches a codec device and driver on an ac97 bus23 * @id: The significant bits if the codec vendor ID1 and ID224 * @mask: Bitmask specifying which bits of the id field are significant when25 * matching. A driver binds to a device when :26 * ((vendorID1 << 8 | vendorID2) & (mask_id1 << 8 | mask_id2)) == id.27 * @data: Private data used by the driver.28 */29struct ac97_id {30 unsigned int id;31 unsigned int mask;32 void *data;33};34 35/**36 * ac97_codec_device - a ac97 codec37 * @dev: the core device38 * @vendor_id: the vendor_id of the codec, as sensed on the AC-link39 * @num: the codec number, 0 is primary, 1 is first slave, etc ...40 * @clk: the clock BIT_CLK provided by the codec41 * @ac97_ctrl: ac97 digital controller on the same AC-link42 *43 * This is the device instantiated for each codec living on a AC-link. There are44 * normally 0 to 4 codec devices per AC-link, and all of them are controlled by45 * an AC97 digital controller.46 */47struct ac97_codec_device {48 struct device dev;49 unsigned int vendor_id;50 unsigned int num;51 struct clk *clk;52 struct ac97_controller *ac97_ctrl;53};54 55/**56 * ac97_codec_driver - a ac97 codec driver57 * @driver: the device driver structure58 * @probe: the function called when a ac97_codec_device is matched59 * @remove: the function called when the device is unbound/removed60 * @shutdown: shutdown function (might be NULL)61 * @id_table: ac97 vendor_id match table, { } member terminated62 */63struct ac97_codec_driver {64 struct device_driver driver;65 int (*probe)(struct ac97_codec_device *);66 void (*remove)(struct ac97_codec_device *dev);67 void (*shutdown)(struct ac97_codec_device *);68 const struct ac97_id *id_table;69};70 71static inline struct ac97_codec_device *to_ac97_device(struct device *d)72{73 return container_of(d, struct ac97_codec_device, dev);74}75 76#define to_ac97_driver(__drv) container_of_const(__drv, struct ac97_codec_driver, driver)77 78#if IS_ENABLED(CONFIG_AC97_BUS_NEW)79int snd_ac97_codec_driver_register(struct ac97_codec_driver *drv);80void snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv);81#else82static inline int83snd_ac97_codec_driver_register(struct ac97_codec_driver *drv)84{85 return 0;86}87static inline void88snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv)89{90}91#endif92 93 94static inline struct device *95ac97_codec_dev2dev(struct ac97_codec_device *adev)96{97 return &adev->dev;98}99 100static inline void *ac97_get_drvdata(struct ac97_codec_device *adev)101{102 return dev_get_drvdata(ac97_codec_dev2dev(adev));103}104 105static inline void ac97_set_drvdata(struct ac97_codec_device *adev,106 void *data)107{108 dev_set_drvdata(ac97_codec_dev2dev(adev), data);109}110 111void *snd_ac97_codec_get_platdata(const struct ac97_codec_device *adev);112 113#endif114