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126 lines
3.8 KiB
126 lines
3.8 KiB
// SPDX-License-Identifier: MIT |
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// Copyright © 2014 Intel Corporation |
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#ifndef _DRM_AUDIO_COMPONENT_H_ |
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#define _DRM_AUDIO_COMPONENT_H_ |
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struct drm_audio_component; |
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struct device; |
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/** |
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* struct drm_audio_component_ops - Ops implemented by DRM driver, called by hda driver |
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*/ |
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struct drm_audio_component_ops { |
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/** |
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* @owner: drm module to pin down |
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*/ |
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struct module *owner; |
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/** |
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* @get_power: get the POWER_DOMAIN_AUDIO power well |
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* |
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* Request the power well to be turned on. |
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* |
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* Returns a wakeref cookie to be passed back to the corresponding |
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* call to @put_power. |
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*/ |
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unsigned long (*get_power)(struct device *); |
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/** |
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* @put_power: put the POWER_DOMAIN_AUDIO power well |
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* |
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* Allow the power well to be turned off. |
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*/ |
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void (*put_power)(struct device *, unsigned long); |
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/** |
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* @codec_wake_override: Enable/disable codec wake signal |
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*/ |
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void (*codec_wake_override)(struct device *, bool enable); |
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/** |
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* @get_cdclk_freq: Get the Core Display Clock in kHz |
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*/ |
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int (*get_cdclk_freq)(struct device *); |
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/** |
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* @sync_audio_rate: set n/cts based on the sample rate |
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* |
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* Called from audio driver. After audio driver sets the |
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* sample rate, it will call this function to set n/cts |
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*/ |
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int (*sync_audio_rate)(struct device *, int port, int pipe, int rate); |
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/** |
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* @get_eld: fill the audio state and ELD bytes for the given port |
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* |
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* Called from audio driver to get the HDMI/DP audio state of the given |
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* digital port, and also fetch ELD bytes to the given pointer. |
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* |
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* It returns the byte size of the original ELD (not the actually |
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* copied size), zero for an invalid ELD, or a negative error code. |
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* |
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* Note that the returned size may be over @max_bytes. Then it |
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* implies that only a part of ELD has been copied to the buffer. |
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*/ |
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int (*get_eld)(struct device *, int port, int pipe, bool *enabled, |
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unsigned char *buf, int max_bytes); |
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}; |
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/** |
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* struct drm_audio_component_audio_ops - Ops implemented by hda driver, called by DRM driver |
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*/ |
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struct drm_audio_component_audio_ops { |
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/** |
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* @audio_ptr: Pointer to be used in call to pin_eld_notify |
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*/ |
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void *audio_ptr; |
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/** |
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* @pin_eld_notify: Notify the HDA driver that pin sense and/or ELD information has changed |
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* |
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* Called when the DRM driver has set up audio pipeline or has just |
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* begun to tear it down. This allows the HDA driver to update its |
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* status accordingly (even when the HDA controller is in power save |
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* mode). |
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*/ |
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void (*pin_eld_notify)(void *audio_ptr, int port, int pipe); |
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/** |
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* @pin2port: Check and convert from pin node to port number |
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* |
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* Called by HDA driver to check and convert from the pin widget node |
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* number to a port number in the graphics side. |
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*/ |
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int (*pin2port)(void *audio_ptr, int pin); |
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/** |
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* @master_bind: (Optional) component master bind callback |
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* |
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* Called at binding master component, for HDA codec-specific |
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* handling of dynamic binding. |
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*/ |
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int (*master_bind)(struct device *dev, struct drm_audio_component *); |
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/** |
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* @master_unbind: (Optional) component master unbind callback |
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* |
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* Called at unbinding master component, for HDA codec-specific |
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* handling of dynamic unbinding. |
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*/ |
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void (*master_unbind)(struct device *dev, struct drm_audio_component *); |
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}; |
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/** |
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* struct drm_audio_component - Used for direct communication between DRM and hda drivers |
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*/ |
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struct drm_audio_component { |
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/** |
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* @dev: DRM device, used as parameter for ops |
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*/ |
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struct device *dev; |
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/** |
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* @ops: Ops implemented by DRM driver, called by hda driver |
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*/ |
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const struct drm_audio_component_ops *ops; |
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/** |
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* @audio_ops: Ops implemented by hda driver, called by DRM driver |
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*/ |
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const struct drm_audio_component_audio_ops *audio_ops; |
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/** |
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* @master_bind_complete: completion held during component master binding |
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*/ |
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struct completion master_bind_complete; |
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}; |
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#endif /* _DRM_AUDIO_COMPONENT_H_ */
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