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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2016-06-24 05:47:55 +0300
committerMark Brown <broonie@kernel.org>2016-06-27 20:53:15 +0300
commitefc9194bcff84666832c6493bafa92029ac6634c (patch)
tree5606d09a3a392ec3b8c401c762259cd7f7a509ce /include/sound/hdmi-codec.h
parent1a695a905c18548062509178b98bc91e67510864 (diff)
downloadlinux-efc9194bcff84666832c6493bafa92029ac6634c.tar.xz
ASoC: hdmi-codec: callback function will be called with private data
Current hdmi-codec driver is assuming that it will be registered from HDMI driver. Because of this assumption, each callback function has struct device pointer which is parent device (= HDMI). Then, it can use dev_get_drvdata() to get private data. OTOH, on some SoC/HDMI case, SoC has VIDEO/SOUND and HDMI IPs. This case, it needs SoC VIDEO, SoC SOUND and HDMI video, HDMI codec driver. In DesignWare HDMI IP case, SoC VIDEO (= DRM/KMS) driver tries to bind DesignWare HDMI video driver, and HDMI codec driver (= hdmi-codec). This case, above "parent device" of HDMI codec driver is DRM/KMS driver and its "device" already has private data. And, from DT and ASoC CPU/Codec/Card binding point of view, HDMI codec (= hdmi-codec) needs to have "parent device" (= DRM/KMS), otherwise, it never detect sound card. Because of these reasons, some driver can't use dev_get_drvdata() to get private data on hdmi-codec driver. This patch add new void pointer on hdmi_codec_pdata for private data, and callback function will be called with it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/hdmi-codec.h')
-rw-r--r--include/sound/hdmi-codec.h13
1 files changed, 8 insertions, 5 deletions
diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
index fc3a481ad91e..530c57bdefa0 100644
--- a/include/sound/hdmi-codec.h
+++ b/include/sound/hdmi-codec.h
@@ -53,18 +53,19 @@ struct hdmi_codec_params {
int channels;
};
+struct hdmi_codec_pdata;
struct hdmi_codec_ops {
/*
* Called when ASoC starts an audio stream setup.
* Optional
*/
- int (*audio_startup)(struct device *dev);
+ int (*audio_startup)(struct device *dev, void *data);
/*
* Configures HDMI-encoder for audio stream.
* Mandatory
*/
- int (*hw_params)(struct device *dev,
+ int (*hw_params)(struct device *dev, void *data,
struct hdmi_codec_daifmt *fmt,
struct hdmi_codec_params *hparms);
@@ -72,19 +73,20 @@ struct hdmi_codec_ops {
* Shuts down the audio stream.
* Mandatory
*/
- void (*audio_shutdown)(struct device *dev);
+ void (*audio_shutdown)(struct device *dev, void *data);
/*
* Mute/unmute HDMI audio stream.
* Optional
*/
- int (*digital_mute)(struct device *dev, bool enable);
+ int (*digital_mute)(struct device *dev, void *data, bool enable);
/*
* Provides EDID-Like-Data from connected HDMI device.
* Optional
*/
- int (*get_eld)(struct device *dev, uint8_t *buf, size_t len);
+ int (*get_eld)(struct device *dev, void *data,
+ uint8_t *buf, size_t len);
};
/* HDMI codec initalization data */
@@ -93,6 +95,7 @@ struct hdmi_codec_pdata {
uint i2s:1;
uint spdif:1;
int max_i2s_channels;
+ void *data;
};
#define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"