cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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codec.h (3365B)

      1/* SPDX-License-Identifier: GPL-2.0
      2 *
      3 *  Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
      4 */
      5
      6#ifndef __SOUND_AC97_CODEC2_H
      7#define __SOUND_AC97_CODEC2_H
      8
      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 bus
     23 * @id: The significant bits if the codec vendor ID1 and ID2
     24 * @mask: Bitmask specifying which bits of the id field are significant when
     25 *	  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 codec
     37 * @dev: the core device
     38 * @vendor_id: the vendor_id of the codec, as sensed on the AC-link
     39 * @num: the codec number, 0 is primary, 1 is first slave, etc ...
     40 * @clk: the clock BIT_CLK provided by the codec
     41 * @ac97_ctrl: ac97 digital controller on the same AC-link
     42 *
     43 * This is the device instantiated for each codec living on a AC-link. There are
     44 * normally 0 to 4 codec devices per AC-link, and all of them are controlled by
     45 * 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 driver
     57 * @driver: the device driver structure
     58 * @probe: the function called when a ac97_codec_device is matched
     59 * @remove: the function called when the device is unbound/removed
     60 * @shutdown: shutdown function (might be NULL)
     61 * @id_table: ac97 vendor_id match table, { } member terminated
     62 */
     63struct ac97_codec_driver {
     64	struct device_driver	driver;
     65	int			(*probe)(struct ac97_codec_device *);
     66	int			(*remove)(struct ac97_codec_device *);
     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
     76static inline struct ac97_codec_driver *to_ac97_driver(struct device_driver *d)
     77{
     78	return container_of(d, struct ac97_codec_driver, driver);
     79}
     80
     81#if IS_ENABLED(CONFIG_AC97_BUS_NEW)
     82int snd_ac97_codec_driver_register(struct ac97_codec_driver *drv);
     83void snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv);
     84#else
     85static inline int
     86snd_ac97_codec_driver_register(struct ac97_codec_driver *drv)
     87{
     88	return 0;
     89}
     90static inline void
     91snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv)
     92{
     93}
     94#endif
     95
     96
     97static inline struct device *
     98ac97_codec_dev2dev(struct ac97_codec_device *adev)
     99{
    100	return &adev->dev;
    101}
    102
    103static inline void *ac97_get_drvdata(struct ac97_codec_device *adev)
    104{
    105	return dev_get_drvdata(ac97_codec_dev2dev(adev));
    106}
    107
    108static inline void ac97_set_drvdata(struct ac97_codec_device *adev,
    109				    void *data)
    110{
    111	dev_set_drvdata(ac97_codec_dev2dev(adev), data);
    112}
    113
    114void *snd_ac97_codec_get_platdata(const struct ac97_codec_device *adev);
    115
    116#endif