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drm/i915: Split audio component to a generic type 

For allowing other drivers to use the DRM audio component, rename the
i915_audio_component_* with drm_audio_component_*, and split the
generic part into drm_audio_component.h.  The i915 specific stuff
remains in struct i915_audio_component, which contains
drm_audio_component as the base.

The license of drm_audio_component.h is kept to MIT as same as the the
original i915_component.h.

This is a preliminary change for further development, and no
functional changes by this patch itself, merely code-split and
renames.

v1->v2: Use SPDX for drm_audio_component.h, fix remaining i915
        argument in drm_audio_component.h

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2018-07-11 15:17:22 +02:00
parent 9a9b13dd27
commit ae891abe7c
8 changed files with 144 additions and 120 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/gpu/drm/i915/intel_audio.c
View File

@ -639,11 +639,12 @@ void intel_audio_codec_enable(struct intel_encoder *encoder,
dev_priv->av_enc_map[pipe] = encoder;
mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) {
if (acomp && acomp->base.audio_ops &&
acomp->base.audio_ops->pin_eld_notify) {
/* audio drivers expect pipe = -1 to indicate Non-MST cases */
if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST))
pipe = -1;
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,
acomp->base.audio_ops->pin_eld_notify(acomp->base.audio_ops->audio_ptr,
(int) port, (int) pipe);
}
@ -681,11 +682,12 @@ void intel_audio_codec_disable(struct intel_encoder *encoder,
dev_priv->av_enc_map[pipe] = NULL;
mutex_unlock(&dev_priv->av_mutex);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) {
if (acomp && acomp->base.audio_ops &&
acomp->base.audio_ops->pin_eld_notify) {
/* audio drivers expect pipe = -1 to indicate Non-MST cases */
if (!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST))
pipe = -1;
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,
acomp->base.audio_ops->pin_eld_notify(acomp->base.audio_ops->audio_ptr,
(int) port, (int) pipe);
}
@ -880,7 +882,7 @@ static int i915_audio_component_get_eld(struct device *kdev, int port,
return ret;
}
static const struct i915_audio_component_ops i915_audio_component_ops = {
static const struct drm_audio_component_ops i915_audio_component_ops = {
.owner = THIS_MODULE,
.get_power = i915_audio_component_get_power,
.put_power = i915_audio_component_put_power,
@ -897,12 +899,12 @@ static int i915_audio_component_bind(struct device *i915_kdev,
struct drm_i915_private *dev_priv = kdev_to_i915(i915_kdev);
int i;
if (WARN_ON(acomp->ops || acomp->dev))
if (WARN_ON(acomp->base.ops || acomp->base.dev))
return -EEXIST;
drm_modeset_lock_all(&dev_priv->drm);
acomp->ops = &i915_audio_component_ops;
acomp->dev = i915_kdev;
acomp->base.ops = &i915_audio_component_ops;
acomp->base.dev = i915_kdev;
BUILD_BUG_ON(MAX_PORTS != I915_MAX_PORTS);
for (i = 0; i < ARRAY_SIZE(acomp->aud_sample_rate); i++)
acomp->aud_sample_rate[i] = 0;
@ -919,8 +921,8 @@ static void i915_audio_component_unbind(struct device *i915_kdev,
struct drm_i915_private *dev_priv = kdev_to_i915(i915_kdev);
drm_modeset_lock_all(&dev_priv->drm);
acomp->ops = NULL;
acomp->dev = NULL;
acomp->base.ops = NULL;
acomp->base.dev = NULL;
dev_priv->audio_component = NULL;
drm_modeset_unlock_all(&dev_priv->drm);
}

95
include/drm/drm_audio_component.h Normal file
View File

@ -0,0 +1,95 @@
// SPDX-License-Identifier: MIT
// Copyright © 2014 Intel Corporation
#ifndef _DRM_AUDIO_COMPONENT_H_
#define _DRM_AUDIO_COMPONENT_H_
/**
* 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.
*/
void (*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 *);
/**
* @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);
};
/**
* 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;
};
#endif /* _DRM_AUDIO_COMPONENT_H_ */

85
include/drm/i915_component.h
View File

@ -24,101 +24,26 @@
#ifndef _I915_COMPONENT_H_
#define _I915_COMPONENT_H_
#include "drm_audio_component.h"
/* MAX_PORT is the number of port
* It must be sync with I915_MAX_PORTS defined i915_drv.h
*/
#define MAX_PORTS 6
/**
* struct i915_audio_component_ops - Ops implemented by i915 driver, called by hda driver
*/
struct i915_audio_component_ops {
/**
* @owner: i915 module
*/
struct module *owner;
/**
* @get_power: get the POWER_DOMAIN_AUDIO power well
*
* Request the power well to be turned on.
*/
void (*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 *);
/**
* @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 i915_audio_component_audio_ops - Ops implemented by hda driver, called by i915 driver
*/
struct i915_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 i915 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);
};
/**
* struct i915_audio_component - Used for direct communication between i915 and hda drivers
*/
struct i915_audio_component {
/**
* @dev: i915 device, used as parameter for ops
* @base: the drm_audio_component base class
*/
struct device *dev;
struct drm_audio_component base;
/**
* @aud_sample_rate: the array of audio sample rate per port
*/
int aud_sample_rate[MAX_PORTS];
/**
* @ops: Ops implemented by i915 driver, called by hda driver
*/
const struct i915_audio_component_ops *ops;
/**
* @audio_ops: Ops implemented by hda driver, called by i915 driver
*/
const struct i915_audio_component_audio_ops *audio_ops;
};
#endif /* _I915_COMPONENT_H_ */

6
include/sound/hda_i915.h
View File

@ -5,7 +5,7 @@
#ifndef __SOUND_HDA_I915_H
#define __SOUND_HDA_I915_H
#include <drm/i915_component.h>
#include <drm/drm_audio_component.h>
#ifdef CONFIG_SND_HDA_I915
int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable);
@ -17,7 +17,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id,
bool *audio_enabled, char *buffer, int max_bytes);
int snd_hdac_i915_init(struct hdac_bus *bus);
int snd_hdac_i915_exit(struct hdac_bus *bus);
int snd_hdac_i915_register_notifier(const struct i915_audio_component_audio_ops *);
int snd_hdac_i915_register_notifier(const struct drm_audio_component_audio_ops *);
#else
static inline int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable)
{
@ -49,7 +49,7 @@ static inline int snd_hdac_i915_exit(struct hdac_bus *bus)
{
return 0;
}
static inline int snd_hdac_i915_register_notifier(const struct i915_audio_component_audio_ops *ops)
static inline int snd_hdac_i915_register_notifier(const struct drm_audio_component_audio_ops *ops)
{
return -ENODEV;
}

6
include/sound/hdaudio.h
View File

@ -333,9 +333,9 @@ struct hdac_bus {
spinlock_t reg_lock;
struct mutex cmd_mutex;
/* i915 component interface */
struct i915_audio_component *audio_component;
int i915_power_refcount;
/* DRM component interface */
struct drm_audio_component *audio_component;
int drm_power_refcount;
/* parameters required for enhanced capabilities */
int num_streams;

40
sound/hda/hdac_i915.c
View File

@ -16,13 +16,13 @@
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/component.h>
#include <drm/i915_component.h>
#include <drm/drm_audio_component.h>
#include <sound/core.h>
#include <sound/hdaudio.h>
#include <sound/hda_i915.h>
#include <sound/hda_register.h>
static struct i915_audio_component *hdac_acomp;
static struct drm_audio_component *hdac_acomp;
/**
* snd_hdac_set_codec_wakeup - Enable / disable HDMI/DP codec wakeup
@ -39,7 +39,7 @@ static struct i915_audio_component *hdac_acomp;
*/
int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable)
{
struct i915_audio_component *acomp = bus->audio_component;
struct drm_audio_component *acomp = bus->audio_component;
if (!acomp || !acomp->ops)
return -ENODEV;
@ -74,7 +74,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_set_codec_wakeup);
*/
int snd_hdac_display_power(struct hdac_bus *bus, bool enable)
{
struct i915_audio_component *acomp = bus->audio_component;
struct drm_audio_component *acomp = bus->audio_component;
if (!acomp || !acomp->ops)
return -ENODEV;
@ -83,14 +83,14 @@ int snd_hdac_display_power(struct hdac_bus *bus, bool enable)
enable ? "enable" : "disable");
if (enable) {
if (!bus->i915_power_refcount++) {
if (!bus->drm_power_refcount++) {
acomp->ops->get_power(acomp->dev);
snd_hdac_set_codec_wakeup(bus, true);
snd_hdac_set_codec_wakeup(bus, false);
}
} else {
WARN_ON(!bus->i915_power_refcount);
if (!--bus->i915_power_refcount)
WARN_ON(!bus->drm_power_refcount);
if (!--bus->drm_power_refcount)
acomp->ops->put_power(acomp->dev);
}
@ -119,7 +119,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_display_power);
*/
void snd_hdac_i915_set_bclk(struct hdac_bus *bus)
{
struct i915_audio_component *acomp = bus->audio_component;
struct drm_audio_component *acomp = bus->audio_component;
struct pci_dev *pci = to_pci_dev(bus->dev);
int cdclk_freq;
unsigned int bclk_m, bclk_n;
@ -206,7 +206,7 @@ int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
int dev_id, int rate)
{
struct hdac_bus *bus = codec->bus;
struct i915_audio_component *acomp = bus->audio_component;
struct drm_audio_component *acomp = bus->audio_component;
int port, pipe;
if (!acomp || !acomp->ops || !acomp->ops->sync_audio_rate)
@ -244,7 +244,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id,
bool *audio_enabled, char *buffer, int max_bytes)
{
struct hdac_bus *bus = codec->bus;
struct i915_audio_component *acomp = bus->audio_component;
struct drm_audio_component *acomp = bus->audio_component;
int port, pipe;
if (!acomp || !acomp->ops || !acomp->ops->get_eld)
@ -262,7 +262,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld);
static int hdac_component_master_bind(struct device *dev)
{
struct i915_audio_component *acomp = hdac_acomp;
struct drm_audio_component *acomp = hdac_acomp;
int ret;
ret = component_bind_all(dev, acomp);
@ -294,7 +294,7 @@ out_unbind:
static void hdac_component_master_unbind(struct device *dev)
{
struct i915_audio_component *acomp = hdac_acomp;
struct drm_audio_component *acomp = hdac_acomp;
module_put(acomp->ops->owner);
component_unbind_all(dev, acomp);
@ -323,7 +323,7 @@ static int hdac_component_master_match(struct device *dev, void *data)
*
* Returns zero for success or a negative error code.
*/
int snd_hdac_i915_register_notifier(const struct i915_audio_component_audio_ops *aops)
int snd_hdac_i915_register_notifier(const struct drm_audio_component_audio_ops *aops)
{
if (!hdac_acomp)
return -ENODEV;
@ -361,7 +361,8 @@ int snd_hdac_i915_init(struct hdac_bus *bus)
{
struct component_match *match = NULL;
struct device *dev = bus->dev;
struct i915_audio_component *acomp;
struct i915_audio_component *i915_acomp;
struct drm_audio_component *acomp;
int ret;
if (WARN_ON(hdac_acomp))
@ -370,9 +371,10 @@ int snd_hdac_i915_init(struct hdac_bus *bus)
if (!i915_gfx_present())
return -ENODEV;
acomp = kzalloc(sizeof(*acomp), GFP_KERNEL);
if (!acomp)
i915_acomp = kzalloc(sizeof(*i915_acomp), GFP_KERNEL);
if (!i915_acomp)
return -ENOMEM;
acomp = &i915_acomp->base;
bus->audio_component = acomp;
hdac_acomp = acomp;
@ -421,13 +423,13 @@ EXPORT_SYMBOL_GPL(snd_hdac_i915_init);
int snd_hdac_i915_exit(struct hdac_bus *bus)
{
struct device *dev = bus->dev;
struct i915_audio_component *acomp = bus->audio_component;
struct drm_audio_component *acomp = bus->audio_component;
if (!acomp)
return 0;
WARN_ON(bus->i915_power_refcount);
if (bus->i915_power_refcount > 0 && acomp->ops)
WARN_ON(bus->drm_power_refcount);
if (bus->drm_power_refcount > 0 && acomp->ops)
acomp->ops->put_power(acomp->dev);
component_master_del(dev, &hdac_component_master_ops);

8
sound/pci/hda/patch_hdmi.c
View File

@ -177,7 +177,7 @@ struct hdmi_spec {
/* i915/powerwell (Haswell+/Valleyview+) specific */
bool use_acomp_notifier; /* use i915 eld_notify callback for hotplug */
struct i915_audio_component_audio_ops i915_audio_ops;
struct drm_audio_component_audio_ops drm_audio_ops;
struct hdac_chmap chmap;
hda_nid_t vendor_nid;
@ -2511,14 +2511,14 @@ static void register_i915_notifier(struct hda_codec *codec)
struct hdmi_spec *spec = codec->spec;
spec->use_acomp_notifier = true;
spec->i915_audio_ops.audio_ptr = codec;
spec->drm_audio_ops.audio_ptr = codec;
/* intel_audio_codec_enable() or intel_audio_codec_disable()
* will call pin_eld_notify with using audio_ptr pointer
* We need make sure audio_ptr is really setup
*/
wmb();
spec->i915_audio_ops.pin_eld_notify = intel_pin_eld_notify;
snd_hdac_i915_register_notifier(&spec->i915_audio_ops);
spec->drm_audio_ops.pin_eld_notify = intel_pin_eld_notify;
snd_hdac_i915_register_notifier(&spec->drm_audio_ops);
}
/* setup_stream ops override for HSW+ */

2
sound/soc/codecs/hdac_hdmi.c
View File

@ -1583,7 +1583,7 @@ static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)
}
static struct i915_audio_component_audio_ops aops = {
static struct drm_audio_component_audio_ops aops = {
.pin_eld_notify = hdac_hdmi_eld_notify_cb,
};