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EDITING: drm_audio_component.h

// SPDX-License-Identifier: MIT
// Copyright © 2014 Intel Corporation

#ifndef _DRM_AUDIO_COMPONENT_H_
#define _DRM_AUDIO_COMPONENT_H_

#include <linux/completion.h>
#include <linux/types.h>

struct drm_audio_component;
struct device;

/**
 * struct drm_audio_component_ops - Ops implemented by DRM driver, called by hda driver
 */
struct drm_audio_component_ops {
	/**
	 * @owner: drm module to pin down
	 */
	struct module *owner;
	/**
	 * @get_power: get the POWER_DOMAIN_AUDIO power well
	 *
	 * Request the power well to be turned on.
	 *
	 * Returns a wakeref cookie to be passed back to the corresponding
	 * call to @put_power.
	 */
	unsigned long (*get_power)(struct device *);
	/**
	 * @put_power: put the POWER_DOMAIN_AUDIO power well
	 *
	 * Allow the power well to be turned off.
	 */
	void (*put_power)(struct device *, unsigned long);
	/**
	 * @codec_wake_override: Enable/disable codec wake signal
	 */
	void (*codec_wake_override)(struct device *, bool enable);
	/**
	 * @get_cdclk_freq: Get the Core Display Clock in kHz
	 */
	int (*get_cdclk_freq)(struct device *);
	/**
	 * @sync_audio_rate: set n/cts based on the sample rate
	 *
	 * Called from audio driver. After audio driver sets the
	 * sample rate, it will call this function to set n/cts
	 */
	int (*sync_audio_rate)(struct device *, int port, int pipe, int rate);
	/**
	 * @get_eld: fill the audio state and ELD bytes for the given port
	 *
	 * Called from audio driver to get the HDMI/DP audio state of the given
	 * digital port, and also fetch ELD bytes to the given pointer.
	 *
	 * It returns the byte size of the original ELD (not the actually
	 * copied size), zero for an invalid ELD, or a negative error code.
	 *
	 * Note that the returned size may be over @max_bytes.  Then it
	 * implies that only a part of ELD has been copied to the buffer.
	 */
	int (*get_eld)(struct device *, int port, int pipe, bool *enabled,
		       unsigned char *buf, int max_bytes);
};

/**
 * struct drm_audio_component_audio_ops - Ops implemented by hda driver, called by DRM driver
 */
struct drm_audio_component_audio_ops {
	/**
	 * @audio_ptr: Pointer to be used in call to pin_eld_notify
	 */
	void *audio_ptr;
	/**
	 * @pin_eld_notify: Notify the HDA driver that pin sense and/or ELD information has changed
	 *
	 * Called when the DRM driver has set up audio pipeline or has just
	 * begun to tear it down. This allows the HDA driver to update its
	 * status accordingly (even when the HDA controller is in power save
	 * mode).
	 */
	void (*pin_eld_notify)(void *audio_ptr, int port, int pipe);
	/**
	 * @pin2port: Check and convert from pin node to port number
	 *
	 * Called by HDA driver to check and convert from the pin widget node
	 * number to a port number in the graphics side.
	 */
	int (*pin2port)(void *audio_ptr, int pin);
	/**
	 * @master_bind: (Optional) component master bind callback
	 *
	 * Called at binding master component, for HDA codec-specific
	 * handling of dynamic binding.
	 */
	int (*master_bind)(struct device *dev, struct drm_audio_component *);
	/**
	 * @master_unbind: (Optional) component master unbind callback
	 *
	 * Called at unbinding master component, for HDA codec-specific
	 * handling of dynamic unbinding.
	 */
	void (*master_unbind)(struct device *dev, struct drm_audio_component *);
};

/**
 * struct drm_audio_component - Used for direct communication between DRM and hda drivers
 */
struct drm_audio_component {
	/**
	 * @dev: DRM device, used as parameter for ops
	 */
	struct device *dev;
	/**
	 * @ops: Ops implemented by DRM driver, called by hda driver
	 */
	const struct drm_audio_component_ops *ops;
	/**
	 * @audio_ops: Ops implemented by hda driver, called by DRM driver
	 */
	const struct drm_audio_component_audio_ops *audio_ops;
	/**
	 * @master_bind_complete: completion held during component master binding
	 */
	struct completion master_bind_complete;
};

#endif /* _DRM_AUDIO_COMPONENT_H_ */

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📁 bridge/	DIR	—	2026-03-10 17:25
📁 display/	DIR	—	2026-03-10 17:25
📁 i2c/	DIR	—	2026-03-10 17:25
📁 ttm/	DIR	—	2026-03-10 17:25
📄 amd_asic_type.h	H	2.3 KB	2024-03-10 20:38	EDIT
📄 drm_accel.h	H	2.3 KB	2025-11-21 22:00	EDIT
📄 drm_aperture.h	H	1.1 KB	2024-03-10 20:38	EDIT
📄 drm_atomic.h	H	41.6 KB	2024-03-10 20:38	EDIT
📄 drm_atomic_helper.h	H	10.8 KB	2024-03-10 20:38	EDIT
📄 drm_atomic_state_helper.h	H	4.4 KB	2024-03-10 20:38	EDIT
📄 drm_atomic_uapi.h	H	2.1 KB	2024-03-10 20:38	EDIT
📄 drm_audio_component.h	H	3.8 KB	2024-03-10 20:38	EDIT
📄 drm_auth.h	H	4.2 KB	2024-03-10 20:38	EDIT
📄 drm_blend.h	H	2.4 KB	2024-03-10 20:38	EDIT
📄 drm_bridge.h	H	34.9 KB	2025-11-21 22:00	EDIT
📄 drm_bridge_connector.h	H	405 B	2024-03-10 20:38	EDIT
📄 drm_buddy.h	H	4.2 KB	2024-03-10 20:38	EDIT
📄 drm_cache.h	H	3.3 KB	2024-03-10 20:38	EDIT
📄 drm_client.h	H	5 KB	2024-03-10 20:38	EDIT
📄 drm_color_mgmt.h	H	3.9 KB	2024-03-10 20:38	EDIT
📄 drm_connector.h	H	65.1 KB	2025-11-21 22:00	EDIT
📄 drm_crtc.h	H	44.5 KB	2024-03-10 20:38	EDIT
📄 drm_crtc_helper.h	H	2.5 KB	2024-03-10 20:38	EDIT
📄 drm_damage_helper.h	H	3.3 KB	2024-03-10 20:38	EDIT
📄 drm_debugfs.h	H	5.7 KB	2024-03-10 20:38	EDIT
📄 drm_debugfs_crc.h	H	2.7 KB	2024-03-10 20:38	EDIT
📄 drm_device.h	H	7.6 KB	2024-03-10 20:38	EDIT
📄 drm_displayid.h	H	5 KB	2025-11-21 22:00	EDIT
📄 drm_drv.h	H	17.8 KB	2024-03-10 20:38	EDIT
📄 drm_edid.h	H	15.5 KB	2024-03-10 20:38	EDIT
📄 drm_eld.h	H	4.8 KB	2024-03-10 20:38	EDIT
📄 drm_encoder.h	H	11.1 KB	2024-03-10 20:38	EDIT
📄 drm_encoder_slave.h	H	6.5 KB	2024-03-10 20:38	EDIT
📄 drm_exec.h	H	4.3 KB	2024-03-10 20:38	EDIT
📄 drm_fb_dma_helper.h	H	575 B	2024-03-10 20:38	EDIT
📄 drm_fb_helper.h	H	11.7 KB	2024-03-10 20:38	EDIT
📄 drm_fbdev_dma.h	H	333 B	2024-03-10 20:38	EDIT
📄 drm_fbdev_generic.h	H	349 B	2024-03-10 20:38	EDIT
📄 drm_file.h	H	14.1 KB	2025-11-21 22:00	EDIT
📄 drm_fixed.h	H	4.8 KB	2025-11-21 22:00	EDIT
📄 drm_flip_work.h	H	2.6 KB	2024-03-10 20:38	EDIT
📄 drm_format_helper.h	H	5.3 KB	2024-03-10 20:38	EDIT
📄 drm_fourcc.h	H	9.9 KB	2024-03-10 20:38	EDIT
📄 drm_framebuffer.h	H	9.8 KB	2024-03-10 20:38	EDIT
📄 drm_gem.h	H	18.3 KB	2025-11-21 22:00	EDIT
📄 drm_gem_atomic_helper.h	H	5.5 KB	2024-03-10 20:38	EDIT
📄 drm_gem_dma_helper.h	H	9.3 KB	2024-03-10 20:38	EDIT
📄 drm_gem_framebuffer_helper.h	H	1.9 KB	2024-03-10 20:38	EDIT
📄 drm_gem_shmem_helper.h	H	7.9 KB	2024-03-10 20:38	EDIT
📄 drm_gem_ttm_helper.h	H	822 B	2024-03-10 20:38	EDIT
📄 drm_gem_vram_helper.h	H	6.1 KB	2024-03-10 20:38	EDIT
📄 drm_gpuvm.h	H	33.5 KB	2024-03-10 20:38	EDIT
📄 drm_ioctl.h	H	5.8 KB	2024-03-10 20:38	EDIT
📄 drm_kunit_helpers.h	H	3.3 KB	2025-11-21 22:00	EDIT
📄 drm_lease.h	H	1010 B	2024-03-10 20:38	EDIT
📄 drm_managed.h	H	3.9 KB	2024-03-10 20:38	EDIT
📄 drm_mipi_dbi.h	H	6.9 KB	2024-03-10 20:38	EDIT
📄 drm_mipi_dsi.h	H	13.2 KB	2025-11-21 22:00	EDIT
📄 drm_mm.h	H	17.5 KB	2024-03-10 20:38	EDIT
📄 drm_mode_config.h	H	32.8 KB	2024-03-10 20:38	EDIT
📄 drm_mode_object.h	H	5.5 KB	2024-03-10 20:38	EDIT
📄 drm_modes.h	H	19.9 KB	2024-03-10 20:38	EDIT
📄 drm_modeset_helper.h	H	1.8 KB	2024-03-10 20:38	EDIT
📄 drm_modeset_helper_vtables.h	H	59.4 KB	2025-11-21 22:00	EDIT
📄 drm_modeset_lock.h	H	7.1 KB	2024-03-10 20:38	EDIT
📄 drm_module.h	H	3.7 KB	2024-03-10 20:38	EDIT
📄 drm_of.h	H	5.2 KB	2024-03-10 20:38	EDIT
📄 drm_panel.h	H	8.9 KB	2024-03-10 20:38	EDIT
📄 drm_pciids.h	H	61 KB	2024-03-10 20:38	EDIT
📄 drm_plane.h	H	30.9 KB	2024-03-10 20:38	EDIT
📄 drm_plane_helper.h	H	2.2 KB	2024-03-10 20:38	EDIT
📄 drm_prime.h	H	4.1 KB	2024-03-10 20:38	EDIT
📄 drm_print.h	H	20.4 KB	2025-11-21 22:00	EDIT
📄 drm_privacy_screen_consumer.h	H	1.9 KB	2024-03-10 20:38	EDIT
📄 drm_privacy_screen_driver.h	H	3 KB	2024-03-10 20:38	EDIT
📄 drm_privacy_screen_machine.h	H	1.3 KB	2024-03-10 20:38	EDIT
📄 drm_probe_helper.h	H	1.6 KB	2024-03-10 20:38	EDIT
📄 drm_property.h	H	12 KB	2024-03-10 20:38	EDIT
📄 drm_rect.h	H	7.2 KB	2024-03-10 20:38	EDIT
📄 drm_self_refresh_helper.h	H	594 B	2024-03-10 20:38	EDIT
📄 drm_simple_kms_helper.h	H	9.5 KB	2024-03-10 20:38	EDIT
📄 drm_suballoc.h	H	2.7 KB	2024-03-10 20:38	EDIT
📄 drm_syncobj.h	H	4 KB	2024-03-10 20:38	EDIT
📄 drm_sysfs.h	H	512 B	2024-03-10 20:38	EDIT
📄 drm_util.h	H	2.6 KB	2024-03-10 20:38	EDIT
📄 drm_utils.h	H	592 B	2025-11-21 22:00	EDIT
📄 drm_vblank.h	H	9.1 KB	2024-03-10 20:38	EDIT
📄 drm_vblank_work.h	H	1.9 KB	2024-03-10 20:38	EDIT
📄 drm_vma_manager.h	H	8.2 KB	2024-03-10 20:38	EDIT
📄 drm_writeback.h	H	4.4 KB	2024-03-10 20:38	EDIT
📄 gma_drm.h	H	413 B	2024-03-10 20:38	EDIT
📄 gpu_scheduler.h	H	20.8 KB	2025-11-21 22:00	EDIT
📄 gud.h	H	11.7 KB	2024-03-10 20:38	EDIT
📄 i915_component.h	H	1.8 KB	2024-03-10 20:38	EDIT
📄 i915_drm.h	H	3.6 KB	2024-03-10 20:38	EDIT
📄 i915_gsc_proxy_mei_interface.h	H	1.5 KB	2024-03-10 20:38	EDIT
📄 i915_hdcp_interface.h	H	16.2 KB	2024-03-10 20:38	EDIT
📄 i915_pciids.h	H	23.9 KB	2025-11-21 22:00	EDIT
📄 i915_pxp_tee_interface.h	H	1.3 KB	2024-03-10 20:38	EDIT
📄 intel-gtt.h	H	1015 B	2024-03-10 20:38	EDIT
📄 intel_lpe_audio.h	H	1.7 KB	2024-03-10 20:38	EDIT
📄 spsc_queue.h	H	3.1 KB	2024-03-10 20:38	EDIT
📄 task_barrier.h	H	3 KB	2024-03-10 20:38	EDIT
📄 xe_pciids.h	H	5.4 KB	2024-03-10 20:38	EDIT