audio: Add shared interface between AVP and kernel

Add tegra_avp_audio.h which is shared interface between AVP and kernel
side avp audio driver.

Bug 1399922

Change-Id: I7ab59678f35812174cd5d333c70d0ef7a865aed9
Signed-off-by: Sumit Bhattacharya <sumitb@nvidia.com>
Reviewed-on: http://git-master/r/362245
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Ravindra Lokhande <rlokhande@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

1 files changed, 171 insertions, 0 deletions

diff --git a/include/linux/tegra_avp_audio.h b/include/linux/tegra_avp_audio.h
new file mode 100644
index 000000000000..da812d07282f
--- /dev/null
+++ b/include/linux/tegra_avp_audio.h
@@ -0,0 +1,171 @@
+/*
+ * tegra_avp_audio.h - Shared interface between AVP and kernel audio avp driver
+ *
+ * Copyright (c) 2013-2014, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 _TEGRA_AVP_AUDIO_H
+#define _TEGRA_AVP_AUDIO_H
+
+#define USE_IRAM_DEVICE_BUFFER  1
+
+/* Runtime profiling options */
+#define PROFILE_RENDER_PROCESSING           0x00000001
+#define PROFILE_RENDER_OVERALL_PROCESSING  \
+	(0x00000002 | PROFILE_RENDER_PROCESSING)
+#define PROFILE_RENDER_MEMORY               0x00000004
+
+#define DEVICE_BUFFER_SIZE      (0x1000)
+
+#define RENDERSW_MAX_LOOPBACK_STREAMS        1
+#define RENDERSW_MAX_RENDER_STREAMS          4
+#define RENDERSW_MAX_STREAMS                 \
+	(RENDERSW_MAX_LOOPBACK_STREAMS + RENDERSW_MAX_RENDER_STREAMS)
+#define RENDERSW_MAX_CHANNELS                2
+
+#define AAC_PAYLOAD_RAW     0
+#define AAC_PAYLOAD_ADTS    1
+#define AAC_PAYLOAD_ADIF    2
+#define AAC_PAYLOAD_LOAS    3
+
+enum KSSTATE {
+	KSSTATE_STOP,
+	KSSTATE_ACQUIRE,
+	KSSTATE_PAUSE,
+	KSSTATE_RUN,
+
+	KSSTATE_Force32 = 0x7fffffff
+};
+
+enum audio_format {
+	FORMAT_PCM,
+	FORMAT_MP3,
+	FORMAT_AAC,
+	FORMAT_WMA,
+	FORMAT_NUM,
+};
+
+enum {
+	CODEC_PCM = 0,
+	CODEC_MP3 = 1,
+	CODEC_AAC = 2,
+	CODEC_WMA = 3,
+	NUM_CODECS,
+};
+
+enum avp_audio_stream_id {
+	loopback_stream_id = 0,
+	pcm_stream_id,
+	pcm2_stream_id,
+	decode_stream_id,
+	decode2_stream_id,
+	max_stream_id
+};
+
+enum tegra_arch {
+	NV_TEGRA_T20 = 0x20,
+	NV_TEGRA_T30 = 0x30,
+	NV_TEGRA_T114 = 0x35,
+	NV_TEGRA_T148 = 0x14,
+	NV_TEGRA_T124 = 0x40,
+	NV_TEGRA_Force32 = 0x7FFFFFFF
+};
+
+enum aac_profile {
+	AAC_PROFILE_MAIN,
+	AAC_PROFILE_LC,
+	AAC_PROFILE_SSR,
+};
+
+enum ucode_desc_params {
+	UCODE_DESC_OFFSET,
+	UCODE_DESC_SIZE,
+	UCODE_DESC_NUM,
+};
+
+struct audio_params {
+	unsigned int                rate;
+	unsigned int                channels;
+	unsigned int                bits_per_sample;
+};
+
+struct stream_data {
+	/* Writeable by mixer */
+	enum KSSTATE                stream_state_current;
+	unsigned int                halted;
+	unsigned int                source_buffer_read_position;
+	unsigned int                source_buffer_read_position_fraction;
+	unsigned int                source_buffer_presentation_position;
+	unsigned int                source_buffer_linear_position;
+	unsigned int                source_buffer_frames_decoded;
+	unsigned int                stream_notification_offset;
+	unsigned int                stream_notification_request;
+
+	/* Read-only for mixer */
+	unsigned int                stream_allocated;
+	enum KSSTATE                stream_state_target;
+
+	void                        *source_buffer_system;
+	unsigned int                source_buffer_avp;
+	unsigned int                source_buffer_size;
+	unsigned int                source_buffer_write_position;
+	unsigned int                source_buffer_write_count;
+
+	unsigned int                stream_notification_interval;
+	int                         stream_notification_enable;
+
+	struct audio_params         stream_params;
+	enum audio_format           stream_format;
+	int                         stream_volume[RENDERSW_MAX_CHANNELS];
+
+	union {
+		/* AAC Specific Data */
+		struct {
+			unsigned int            payload_type;
+			unsigned int            audio_profile;
+			unsigned int            sampling_freq_index;
+			unsigned int            sampling_freq;
+			unsigned int            channel_configuration;
+			unsigned int            extension_sampling_freq_index;
+			unsigned int            extension_sampling_freq;
+		} aac;
+	} u;
+};
+
+struct audio_engine_data {
+	unsigned int            apb_channel_handle;
+
+	void                    *device_buffer_system;
+	unsigned int            device_buffer_avp;
+
+	unsigned int            track_audio_latency;
+	unsigned int            hw_write_time;
+
+	unsigned int            codec_ucode_base_address;
+	unsigned int            codec_ucode_desc[NUM_CODECS][UCODE_DESC_NUM];
+					/* [codec][offset,size] */
+
+	enum KSSTATE            device_state_target;
+	unsigned int            profile_state;
+
+	struct audio_params     device_format;
+
+	enum KSSTATE            device_state_current;
+	unsigned int            device_buffer_write_position;
+	unsigned int            device_buffer_read_position;
+	unsigned int            chip_id;
+	unsigned int            only_loopback_flag;
+
+	struct stream_data      stream[RENDERSW_MAX_STREAMS];
+};
+
+#endif