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128 lines
3.7 KiB
128 lines
3.7 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Apple Onboard Audio definitions |
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* |
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* Copyright 2006 Johannes Berg <[email protected]> |
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*/ |
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#ifndef __AOA_H |
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#define __AOA_H |
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#include <asm/prom.h> |
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#include <linux/module.h> |
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#include <sound/core.h> |
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#include <sound/asound.h> |
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#include <sound/control.h> |
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#include "aoa-gpio.h" |
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#include "soundbus/soundbus.h" |
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#define MAX_CODEC_NAME_LEN 32 |
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struct aoa_codec { |
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char name[MAX_CODEC_NAME_LEN]; |
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struct module *owner; |
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/* called when the fabric wants to init this codec. |
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* Do alsa card manipulations from here. */ |
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int (*init)(struct aoa_codec *codec); |
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/* called when the fabric is done with the codec. |
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* The alsa card will be cleaned up so don't bother. */ |
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void (*exit)(struct aoa_codec *codec); |
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/* May be NULL, but can be used by the fabric. |
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* Refcounting is the codec driver's responsibility */ |
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struct device_node *node; |
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/* assigned by fabric before init() is called, points |
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* to the soundbus device. Cannot be NULL. */ |
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struct soundbus_dev *soundbus_dev; |
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/* assigned by the fabric before init() is called, points |
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* to the fabric's gpio runtime record for the relevant |
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* device. */ |
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struct gpio_runtime *gpio; |
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/* assigned by the fabric before init() is called, contains |
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* a codec specific bitmask of what outputs and inputs are |
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* actually connected */ |
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u32 connected; |
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/* data the fabric can associate with this structure */ |
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void *fabric_data; |
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/* private! */ |
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struct list_head list; |
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struct aoa_fabric *fabric; |
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}; |
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/* return 0 on success */ |
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extern int |
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aoa_codec_register(struct aoa_codec *codec); |
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extern void |
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aoa_codec_unregister(struct aoa_codec *codec); |
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#define MAX_LAYOUT_NAME_LEN 32 |
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struct aoa_fabric { |
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char name[MAX_LAYOUT_NAME_LEN]; |
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struct module *owner; |
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/* once codecs register, they are passed here after. |
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* They are of course not initialised, since the |
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* fabric is responsible for initialising some fields |
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* in the codec structure! */ |
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int (*found_codec)(struct aoa_codec *codec); |
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/* called for each codec when it is removed, |
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* also in the case that aoa_fabric_unregister |
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* is called and all codecs are removed |
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* from this fabric. |
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* Also called if found_codec returned 0 but |
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* the codec couldn't initialise. */ |
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void (*remove_codec)(struct aoa_codec *codec); |
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/* If found_codec returned 0, and the codec |
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* could be initialised, this is called. */ |
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void (*attached_codec)(struct aoa_codec *codec); |
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}; |
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/* return 0 on success, -EEXIST if another fabric is |
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* registered, -EALREADY if the same fabric is registered. |
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* Passing NULL can be used to test for the presence |
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* of another fabric, if -EALREADY is returned there is |
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* no other fabric present. |
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* In the case that the function returns -EALREADY |
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* and the fabric passed is not NULL, all codecs |
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* that are not assigned yet are passed to the fabric |
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* again for reconsideration. */ |
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extern int |
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aoa_fabric_register(struct aoa_fabric *fabric, struct device *dev); |
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/* it is vital to call this when the fabric exits! |
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* When calling, the remove_codec will be called |
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* for all codecs, unless it is NULL. */ |
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extern void |
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aoa_fabric_unregister(struct aoa_fabric *fabric); |
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/* if for some reason you want to get rid of a codec |
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* before the fabric is removed, use this. |
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* Note that remove_codec is called for it! */ |
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extern void |
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aoa_fabric_unlink_codec(struct aoa_codec *codec); |
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/* alsa help methods */ |
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struct aoa_card { |
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struct snd_card *alsa_card; |
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}; |
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extern int aoa_snd_device_new(enum snd_device_type type, |
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void *device_data, const struct snd_device_ops *ops); |
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extern struct snd_card *aoa_get_card(void); |
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extern int aoa_snd_ctl_add(struct snd_kcontrol* control); |
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/* GPIO stuff */ |
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extern struct gpio_methods *pmf_gpio_methods; |
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extern struct gpio_methods *ftr_gpio_methods; |
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/* extern struct gpio_methods *map_gpio_methods; */ |
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#endif /* __AOA_H */
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