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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | /* 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) & 0xffff) << 16) | ((vendor_id2) & 0xffff)) #define AC97_DRIVER_ID(vendor_id1, vendor_id2, mask_id1, mask_id2, _data) \ { .id = (((vendor_id1) & 0xffff) << 16) | ((vendor_id2) & 0xffff), \ .mask = (((mask_id1) & 0xffff) << 16) | ((mask_id2) & 0xffff), \ .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); } static inline struct ac97_codec_driver *to_ac97_driver(struct device_driver *d) { return container_of(d, 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 |