| 1 | |
| 2 | |
| 3 |
|
| 4 | #ifndef _DRM_AUDIO_COMPONENT_H_
|
| 5 | #define _DRM_AUDIO_COMPONENT_H_
|
| 6 |
|
| 7 | #include <linux/completion.h>
|
| 8 | #include <linux/types.h>
|
| 9 |
|
| 10 | struct drm_audio_component;
|
| 11 | struct device;
|
| 12 |
|
| 13 | |
| 14 | * struct drm_audio_component_ops - Ops implemented by DRM driver, called by hda driver
|
| 15 |
|
| 16 | struct drm_audio_component_ops {
|
| 17 | |
| 18 | * @owner: drm module to pin down
|
| 19 |
|
| 20 | struct module *owner;
|
| 21 | |
| 22 | * @get_power: get the POWER_DOMAIN_AUDIO power well
|
| 23 | *
|
| 24 | * Request the power well to be turned on.
|
| 25 | *
|
| 26 | * Returns a wakeref cookie to be passed back to the corresponding
|
| 27 | * call to @put_power.
|
| 28 |
|
| 29 | unsigned long (*get_power)(struct device *);
|
| 30 | |
| 31 | * @put_power: put the POWER_DOMAIN_AUDIO power well
|
| 32 | *
|
| 33 | * Allow the power well to be turned off.
|
| 34 |
|
| 35 | void (*put_power)(struct device *, unsigned long);
|
| 36 | |
| 37 | * @codec_wake_override: Enable/disable codec wake signal
|
| 38 |
|
| 39 | void (*codec_wake_override)(struct device *, bool enable);
|
| 40 | |
| 41 | * @get_cdclk_freq: Get the Core Display Clock in kHz
|
| 42 |
|
| 43 | int (*get_cdclk_freq)(struct device *);
|
| 44 | |
| 45 | * @sync_audio_rate: set n/cts based on the sample rate
|
| 46 | *
|
| 47 | * Called from audio driver. After audio driver sets the
|
| 48 | * sample rate, it will call this function to set n/cts
|
| 49 |
|
| 50 | int (*sync_audio_rate)(struct device *, int port, int pipe, int rate);
|
| 51 | |
| 52 | * @get_eld: fill the audio state and ELD bytes for the given port
|
| 53 | *
|
| 54 | * Called from audio driver to get the HDMI/DP audio state of the given
|
| 55 | * digital port, and also fetch ELD bytes to the given pointer.
|
| 56 | *
|
| 57 | * It returns the byte size of the original ELD (not the actually
|
| 58 | * copied size), zero for an invalid ELD, or a negative error code.
|
| 59 | *
|
| 60 | * Note that the returned size may be over @max_bytes. Then it
|
| 61 | * implies that only a part of ELD has been copied to the buffer.
|
| 62 |
|
| 63 | int (*get_eld)(struct device *, int port, int pipe, bool *enabled,
|
| 64 | unsigned char *buf, int max_bytes);
|
| 65 | };
|
| 66 |
|
| 67 | |
| 68 | * struct drm_audio_component_audio_ops - Ops implemented by hda driver, called by DRM driver
|
| 69 |
|
| 70 | struct drm_audio_component_audio_ops {
|
| 71 | |
| 72 | * @audio_ptr: Pointer to be used in call to pin_eld_notify
|
| 73 |
|
| 74 | void *audio_ptr;
|
| 75 | |
| 76 | * @pin_eld_notify: Notify the HDA driver that pin sense and/or ELD information has changed
|
| 77 | *
|
| 78 | * Called when the DRM driver has set up audio pipeline or has just
|
| 79 | * begun to tear it down. This allows the HDA driver to update its
|
| 80 | * status accordingly (even when the HDA controller is in power save
|
| 81 | * mode).
|
| 82 |
|
| 83 | void (*pin_eld_notify)(void *audio_ptr, int port, int pipe);
|
| 84 | |
| 85 | * @pin2port: Check and convert from pin node to port number
|
| 86 | *
|
| 87 | * Called by HDA driver to check and convert from the pin widget node
|
| 88 | * number to a port number in the graphics side.
|
| 89 |
|
| 90 | int (*pin2port)(void *audio_ptr, int pin);
|
| 91 | |
| 92 | * @master_bind: (Optional) component master bind callback
|
| 93 | *
|
| 94 | * Called at binding master component, for HDA codec-specific
|
| 95 | * handling of dynamic binding.
|
| 96 |
|
| 97 | int (*master_bind)(struct device *dev, struct drm_audio_component *);
|
| 98 | |
| 99 | * @master_unbind: (Optional) component master unbind callback
|
| 100 | *
|
| 101 | * Called at unbinding master component, for HDA codec-specific
|
| 102 | * handling of dynamic unbinding.
|
| 103 |
|
| 104 | void (*master_unbind)(struct device *dev, struct drm_audio_component *);
|
| 105 | };
|
| 106 |
|
| 107 | |
| 108 | * struct drm_audio_component - Used for direct communication between DRM and hda drivers
|
| 109 |
|
| 110 | struct drm_audio_component {
|
| 111 | |
| 112 | * @dev: DRM device, used as parameter for ops
|
| 113 |
|
| 114 | struct device *dev;
|
| 115 | |
| 116 | * @ops: Ops implemented by DRM driver, called by hda driver
|
| 117 |
|
| 118 | const struct drm_audio_component_ops *ops;
|
| 119 | |
| 120 | * @audio_ops: Ops implemented by hda driver, called by DRM driver
|
| 121 |
|
| 122 | const struct drm_audio_component_audio_ops *audio_ops;
|
| 123 | |
| 124 | * @master_bind_complete: completion held during component master binding
|
| 125 |
|
| 126 | struct completion master_bind_complete;
|
| 127 | };
|
| 128 |
|
| 129 | #endif
|