/* SPDX-License-Identifier: GPL-2.0
*
* Copyright ( C ) 2016 Robert Jarzmik < robert . jarzmik @ free . fr >
*/
#ifndef __SOUND_AC97_CODEC2_H
#define __SOUND_AC97_CODEC2_H
#include <linux/device.h>
#define AC97_ID(vendor_id1, vendor_id2) \
((((vendor_id1) & 0 xffff) << 16 ) | ((vendor_id2) & 0 xffff))
#define AC97_DRIVER_ID(vendor_id1, vendor_id2, mask_id1, mask_id2, _data) \
{ .id = (((vendor_id1) & 0 xffff) << 16 ) | ((vendor_id2) & 0 xffff), \
.mask = (((mask_id1) & 0 xffff) << 16 ) | ((mask_id2) & 0 xffff), \
.data = (_data) }
struct ac97_controller;
struct clk;
/**
* struct ac97_id - matches a codec device and driver on an ac97 bus
* @ id : The significant bits if the codec vendor ID1 and ID2
* @ mask : Bitmask specifying which bits of the id field are significant when
* matching . A driver binds to a device when :
* ( ( vendorID1 < < 8 | vendorID2 ) & ( mask_id1 < < 8 | mask_id2 ) ) = = id .
* @ data : Private data used by the driver .
*/
struct ac97_id {
unsigned int id;
unsigned int mask;
void *data;
};
/**
* ac97_codec_device - a ac97 codec
* @ dev : the core device
* @ vendor_id : the vendor_id of the codec , as sensed on the AC - link
* @ num : the codec number , 0 is primary , 1 is first slave , etc . . .
* @ clk : the clock BIT_CLK provided by the codec
* @ ac97_ctrl : ac97 digital controller on the same AC - link
*
* This is the device instantiated for each codec living on a AC - link . There are
* normally 0 to 4 codec devices per AC - link , and all of them are controlled by
* an AC97 digital controller .
*/
struct ac97_codec_device {
struct device dev;
unsigned int vendor_id;
unsigned int num;
struct clk *clk;
struct ac97_controller *ac97_ctrl;
};
/**
* ac97_codec_driver - a ac97 codec driver
* @ driver : the device driver structure
* @ probe : the function called when a ac97_codec_device is matched
* @ remove : the function called when the device is unbound / removed
* @ shutdown : shutdown function ( might be NULL )
* @ id_table : ac97 vendor_id match table , { } member terminated
*/
struct ac97_codec_driver {
struct device_driver driver;
int (*probe)(struct ac97_codec_device *);
void (*remove)(struct ac97_codec_device *dev);
void (*shutdown)(struct ac97_codec_device *);
const struct ac97_id *id_table;
};
static inline struct ac97_codec_device *to_ac97_device(struct device *d)
{
return container_of(d, struct ac97_codec_device, dev);
}
#define to_ac97_driver(__drv) container_of_const(__drv, struct ac97_codec_driver, driver)
#if IS_ENABLED(CONFIG_AC97_BUS_NEW)
int snd_ac97_codec_driver_register(struct ac97_codec_driver *drv);
void snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv);
#else
static inline int
snd_ac97_codec_driver_register(struct ac97_codec_driver *drv)
{
return 0 ;
}
static inline void
snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv)
{
}
#endif
static inline struct device *
ac97_codec_dev2dev(struct ac97_codec_device *adev)
{
return &adev->dev;
}
static inline void *ac97_get_drvdata(struct ac97_codec_device *adev)
{
return dev_get_drvdata(ac97_codec_dev2dev(adev));
}
static inline void ac97_set_drvdata(struct ac97_codec_device *adev,
void *data)
{
dev_set_drvdata(ac97_codec_dev2dev(adev), data);
}
void *snd_ac97_codec_get_platdata(const struct ac97_codec_device *adev);
#endif
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