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