Merge branches 'acpica-fixes', 'acpi-pci-fixes' and 'acpi-debug-fixes'

[deliverable/linux.git] / include / sound / hdmi-codec.h

diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
new file mode 100644 (file)
index 0000000..fc3a481
--- /dev/null
+++ b/include/sound/hdmi-codec.h
@@ -0,0 +1,100 @@
+/*
+ * hdmi-codec.h - HDMI Codec driver API
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Author: Jyri Sarha <jsarha@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef __HDMI_CODEC_H__
+#define __HDMI_CODEC_H__
+
+#include <linux/hdmi.h>
+#include <drm/drm_edid.h>
+#include <sound/asoundef.h>
+#include <uapi/sound/asound.h>
+
+/*
+ * Protocol between ASoC cpu-dai and HDMI-encoder
+ */
+struct hdmi_codec_daifmt {
+       enum {
+               HDMI_I2S,
+               HDMI_RIGHT_J,
+               HDMI_LEFT_J,
+               HDMI_DSP_A,
+               HDMI_DSP_B,
+               HDMI_AC97,
+               HDMI_SPDIF,
+       } fmt;
+       int bit_clk_inv:1;
+       int frame_clk_inv:1;
+       int bit_clk_master:1;
+       int frame_clk_master:1;
+};
+
+/*
+ * HDMI audio parameters
+ */
+struct hdmi_codec_params {
+       struct hdmi_audio_infoframe cea;
+       struct snd_aes_iec958 iec;
+       int sample_rate;
+       int sample_width;
+       int channels;
+};
+
+struct hdmi_codec_ops {
+       /*
+        * Called when ASoC starts an audio stream setup.
+        * Optional
+        */
+       int (*audio_startup)(struct device *dev);
+
+       /*
+        * Configures HDMI-encoder for audio stream.
+        * Mandatory
+        */
+       int (*hw_params)(struct device *dev,
+                        struct hdmi_codec_daifmt *fmt,
+                        struct hdmi_codec_params *hparms);
+
+       /*
+        * Shuts down the audio stream.
+        * Mandatory
+        */
+       void (*audio_shutdown)(struct device *dev);
+
+       /*
+        * Mute/unmute HDMI audio stream.
+        * Optional
+        */
+       int (*digital_mute)(struct device *dev, bool enable);
+
+       /*
+        * Provides EDID-Like-Data from connected HDMI device.
+        * Optional
+        */
+       int (*get_eld)(struct device *dev, uint8_t *buf, size_t len);
+};
+
+/* HDMI codec initalization data */
+struct hdmi_codec_pdata {
+       const struct hdmi_codec_ops *ops;
+       uint i2s:1;
+       uint spdif:1;
+       int max_i2s_channels;
+};
+
+#define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
+
+#endif /* __HDMI_CODEC_H__ */