greybus: audio: Add Audio Device Class Protocol definitions

Add the macros and structures for the Greybus Audio Device
Class Protocol.
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/greybus_protocols.h

@@ -1425,5 +1425,372 @@ struct gb_lights_get_flash_fault_response {
 #define GB_LIGHTS_FLASH_FAULT_LED_OVER_TEMPERATURE	0x00000080
 } __packed;
 
+/* Audio */
+
+/* Version of the Greybus audio protocol we support */
+#define GB_AUDIO_VERSION_MAJOR			0x00
+#define GB_AUDIO_VERSION_MINOR			0x01
+
+#define GB_AUDIO_TYPE_PROTOCOL_VERSION		0x01
+#define GB_AUDIO_TYPE_GET_TOPOLOGY_SIZE		0x02
+#define GB_AUDIO_TYPE_GET_TOPOLOGY		0x03
+#define GB_AUDIO_TYPE_GET_CONTROL		0x04
+#define GB_AUDIO_TYPE_SET_CONTROL		0x05
+#define GB_AUDIO_TYPE_ENABLE_WIDGET		0x06
+#define GB_AUDIO_TYPE_DISABLE_WIDGET		0x07
+#define GB_AUDIO_TYPE_GET_PCM			0x08
+#define GB_AUDIO_TYPE_SET_PCM			0x09
+#define GB_AUDIO_TYPE_SET_TX_DATA_SIZE		0x0a
+#define GB_AUDIO_TYPE_GET_TX_DELAY		0x0b
+#define GB_AUDIO_TYPE_ACTIVATE_TX		0x0c
+#define GB_AUDIO_TYPE_DEACTIVATE_TX		0x0d
+#define GB_AUDIO_TYPE_SET_RX_DATA_SIZE		0x0e
+#define GB_AUDIO_TYPE_GET_RX_DELAY		0x0f
+#define GB_AUDIO_TYPE_ACTIVATE_RX		0x10
+#define GB_AUDIO_TYPE_DEACTIVATE_RX		0x11
+#define GB_AUDIO_TYPE_JACK_EVENT		0x12
+#define GB_AUDIO_TYPE_BUTTON_EVENT		0x13
+#define GB_AUDIO_TYPE_STREAMING_EVENT		0x14
+#define GB_AUDIO_TYPE_SEND_DATA			0x15
+
+/* Module must be able to buffer 10ms of audio data, minimum */
+#define GB_AUDIO_SAMPLE_BUFFER_MIN_US		10000
+
+#define GB_AUDIO_PCM_NAME_MAX			32
+#define AUDIO_DAI_NAME_MAX			32
+#define AUDIO_CONTROL_NAME_MAX			32
+#define AUDIO_CTL_ELEM_NAME_MAX			44
+#define AUDIO_ENUM_NAME_MAX			64
+#define AUDIO_WIDGET_NAME_MAX			32
+
+/* See SNDRV_PCM_FMTBIT_* in Linux source */
+#define GB_AUDIO_PCM_FMT_S8			BIT(0)
+#define GB_AUDIO_PCM_FMT_U8			BIT(1)
+#define GB_AUDIO_PCM_FMT_S16_LE			BIT(2)
+#define GB_AUDIO_PCM_FMT_S16_BE			BIT(3)
+#define GB_AUDIO_PCM_FMT_U16_LE			BIT(4)
+#define GB_AUDIO_PCM_FMT_U16_BE			BIT(5)
+#define GB_AUDIO_PCM_FMT_S24_LE			BIT(6)
+#define GB_AUDIO_PCM_FMT_S24_BE			BIT(7)
+#define GB_AUDIO_PCM_FMT_U24_LE			BIT(8)
+#define GB_AUDIO_PCM_FMT_U24_BE			BIT(9)
+#define GB_AUDIO_PCM_FMT_S32_LE			BIT(10)
+#define GB_AUDIO_PCM_FMT_S32_BE			BIT(11)
+#define GB_AUDIO_PCM_FMT_U32_LE			BIT(12)
+#define GB_AUDIO_PCM_FMT_U32_BE			BIT(13)
+
+/* See SNDRV_PCM_RATE_* in Linux source */
+#define GB_AUDIO_PCM_RATE_5512			BIT(0)
+#define GB_AUDIO_PCM_RATE_8000			BIT(1)
+#define GB_AUDIO_PCM_RATE_11025			BIT(2)
+#define GB_AUDIO_PCM_RATE_16000			BIT(3)
+#define GB_AUDIO_PCM_RATE_22050			BIT(4)
+#define GB_AUDIO_PCM_RATE_32000			BIT(5)
+#define GB_AUDIO_PCM_RATE_44100			BIT(6)
+#define GB_AUDIO_PCM_RATE_48000			BIT(7)
+#define GB_AUDIO_PCM_RATE_64000			BIT(8)
+#define GB_AUDIO_PCM_RATE_88200			BIT(9)
+#define GB_AUDIO_PCM_RATE_96000			BIT(10)
+#define GB_AUDIO_PCM_RATE_176400		BIT(11)
+#define GB_AUDIO_PCM_RATE_192000		BIT(12)
+
+#define GB_AUDIO_STREAM_TYPE_CAPTURE		0x1
+#define GB_AUDIO_STREAM_TYPE_PLAYBACK		0x2
+
+#define GB_AUDIO_CTL_ELEM_ACCESS_READ		BIT(0)
+#define GB_AUDIO_CTL_ELEM_ACCESS_WRITE		BIT(1)
+
+/* See SNDRV_CTL_ELEM_TYPE_* in Linux source */
+#define GB_AUDIO_CTL_ELEM_TYPE_BOOLEAN		0x01
+#define GB_AUDIO_CTL_ELEM_TYPE_INTEGER		0x02
+#define GB_AUDIO_CTL_ELEM_TYPE_ENUMERATED	0x03
+#define GB_AUDIO_CTL_ELEM_TYPE_INTEGER64	0x06
+
+/* See SNDRV_CTL_ELEM_IFACE_* in Linux source */
+#define GB_AUDIO_CTL_ELEM_IFACE_CARD		0x00
+#define GB_AUDIO_CTL_ELEM_IFACE_HWDEP		0x01
+#define GB_AUDIO_CTL_ELEM_IFACE_MIXER		0x02
+#define GB_AUDIO_CTL_ELEM_IFACE_PCM		0x03
+#define GB_AUDIO_CTL_ELEM_IFACE_RAWMIDI		0x04
+#define GB_AUDIO_CTL_ELEM_IFACE_TIMER		0x05
+#define GB_AUDIO_CTL_ELEM_IFACE_SEQUENCER	0x06
+
+/* SNDRV_CTL_ELEM_ACCESS_* in Linux source */
+#define GB_AUDIO_ACCESS_READ			BIT(0)
+#define GB_AUDIO_ACCESS_WRITE			BIT(1)
+#define GB_AUDIO_ACCESS_VOLATILE		BIT(2)
+#define GB_AUDIO_ACCESS_TIMESTAMP		BIT(3)
+#define GB_AUDIO_ACCESS_TLV_READ		BIT(4)
+#define GB_AUDIO_ACCESS_TLV_WRITE		BIT(5)
+#define GB_AUDIO_ACCESS_TLV_COMMAND		BIT(6)
+#define GB_AUDIO_ACCESS_INACTIVE		BIT(7)
+#define GB_AUDIO_ACCESS_LOCK			BIT(8)
+#define GB_AUDIO_ACCESS_OWNER			BIT(9)
+
+/* enum snd_soc_dapm_type */
+#define GB_AUDIO_WIDGET_TYPE_INPUT		0x0
+#define GB_AUDIO_WIDGET_TYPE_OUTPUT		0x1
+#define GB_AUDIO_WIDGET_TYPE_MUX		0x2
+#define GB_AUDIO_WIDGET_TYPE_VIRT_MUX		0x3
+#define GB_AUDIO_WIDGET_TYPE_VALUE_MUX		0x4
+#define GB_AUDIO_WIDGET_TYPE_MIXER		0x5
+#define GB_AUDIO_WIDGET_TYPE_MIXER_NAMED_CTL	0x6
+#define GB_AUDIO_WIDGET_TYPE_PGA		0x7
+#define GB_AUDIO_WIDGET_TYPE_OUT_DRV		0x8
+#define GB_AUDIO_WIDGET_TYPE_ADC		0x9
+#define GB_AUDIO_WIDGET_TYPE_DAC		0xa
+#define GB_AUDIO_WIDGET_TYPE_MICBIAS		0xb
+#define GB_AUDIO_WIDGET_TYPE_MIC		0xc
+#define GB_AUDIO_WIDGET_TYPE_HP			0xd
+#define GB_AUDIO_WIDGET_TYPE_SPK		0xe
+#define GB_AUDIO_WIDGET_TYPE_LINE		0xf
+#define GB_AUDIO_WIDGET_TYPE_SWITCH		0x10
+#define GB_AUDIO_WIDGET_TYPE_VMID		0x11
+#define GB_AUDIO_WIDGET_TYPE_PRE		0x12
+#define GB_AUDIO_WIDGET_TYPE_POST		0x13
+#define GB_AUDIO_WIDGET_TYPE_SUPPLY		0x14
+#define GB_AUDIO_WIDGET_TYPE_REGULATOR_SUPPLY	0x15
+#define GB_AUDIO_WIDGET_TYPE_CLOCK_SUPPLY	0x16
+#define GB_AUDIO_WIDGET_TYPE_AIF_IN		0x17
+#define GB_AUDIO_WIDGET_TYPE_AIF_OUT		0x18
+#define GB_AUDIO_WIDGET_TYPE_SIGGEN		0x19
+#define GB_AUDIO_WIDGET_TYPE_DAI_IN		0x1a
+#define GB_AUDIO_WIDGET_TYPE_DAI_OUT		0x1b
+#define GB_AUDIO_WIDGET_TYPE_DAI_LINK		0x1c
+
+#define GB_AUDIO_WIDGET_STATE_DISABLED		0x01
+#define GB_AUDIO_WIDGET_STATE_ENAABLED		0x02
+
+#define GB_AUDIO_JACK_EVENT_INSERTION		0x1
+#define GB_AUDIO_JACK_EVENT_REMOVAL		0x2
+
+#define GB_AUDIO_BUTTON_EVENT_PRESS		0x1
+#define GB_AUDIO_BUTTON_EVENT_RELEASE		0x2
+
+#define GB_AUDIO_STREAMING_EVENT_UNSPECIFIED	0x1
+#define GB_AUDIO_STREAMING_EVENT_HALT		0x2
+#define GB_AUDIO_STREAMING_EVENT_INTERNAL_ERROR	0x3
+#define GB_AUDIO_STREAMING_EVENT_PROTOCOL_ERROR	0x4
+#define GB_AUDIO_STREAMING_EVENT_FAILURE	0x5
+#define GB_AUDIO_STREAMING_EVENT_UNDERRUN	0x6
+#define GB_AUDIO_STREAMING_EVENT_OVERRUN	0x7
+#define GB_AUDIO_STREAMING_EVENT_CLOCKING	0x8
+#define GB_AUDIO_STREAMING_EVENT_DATA_LEN	0x9
+
+#define GB_AUDIO_INVALID_INDEX			0xff
+
+struct gb_audio_pcm {
+	__u8	stream_name[GB_AUDIO_PCM_NAME_MAX];
+	__le32	formats;	/* GB_AUDIO_PCM_FMT_* */
+	__le32	rates;		/* GB_AUDIO_PCM_RATE_* */
+	__u8	chan_min;
+	__u8	chan_max;
+	__u8	sig_bits;	/* number of bits of content */
+} __packed;
+
+struct gb_audio_dai {
+	__u8			name[AUDIO_DAI_NAME_MAX];
+	__le16			data_cport;
+	struct gb_audio_pcm	capture;
+	struct gb_audio_pcm	playback;
+} __packed;
+
+struct gb_audio_integer {
+	__le32	min;
+	__le32	max;
+	__le32	step;
+} __packed;
+
+struct gb_audio_integer64 {
+	__le64	min;
+	__le64	max;
+	__le64	step;
+} __packed;
+
+struct gb_audio_enumerated {
+	__le32	items;
+	__le16	names_length;
+	__u8	names[0];
+} __packed;
+
+struct gb_audio_ctl_elem_info { /* See snd_ctl_elem_info in Linux source */
+	__u8		type;		/* GB_AUDIO_CTL_ELEM_TYPE_* */
+	__le16		dimen[4];
+	union {
+		struct gb_audio_integer		integer;
+		struct gb_audio_integer64	integer64;
+		struct gb_audio_enumerated	enumerated;
+	} value;
+} __packed;
+
+struct gb_audio_ctl_elem_value { /* See snd_ctl_elem_value in Linux source */
+	__le64				timestamp; /* XXX needed? */
+	union {
+		__le32	integer_value[2];	/* consider CTL_DOUBLE_xxx */
+		__le64	integer64_value[2];
+		__le32	enumerated_item[2];
+	} value;
+} __packed;
+
+struct gb_audio_control {
+	__u8	name[AUDIO_CONTROL_NAME_MAX];
+	__u8	id;		/* 0-63 */
+	__u8	iface;		/* GB_AUDIO_IFACE_* */
+	__le16	data_cport;
+	__le32	access;		/* GB_AUDIO_ACCESS_* */
+	__u8    count;		/* count of same elements */
+	__u8	count_values;	/* count of values, max=2 for CTL_DOUBLE_xxx */
+	struct gb_audio_ctl_elem_info	info;
+} __packed;
+
+struct gb_audio_widget {
+	__u8	name[AUDIO_WIDGET_NAME_MAX];
+	__u8	sname[AUDIO_WIDGET_NAME_MAX];
+	__u8	id;
+	__u8	type;		/* GB_AUDIO_WIDGET_TYPE_* */
+	__u8	state;		/* GB_AUDIO_WIDGET_STATE_* */
+	__u8	ncontrols;
+	struct gb_audio_control	ctl[0];	/* 'ncontrols' entries */
+} __packed;
+
+struct gb_audio_route {
+	__u8	source_id;	/* widget id */
+	__u8	destination_id;	/* widget id */
+	__u8	control_id;	/* 0-63 */
+	__u8	index;		/* Selection within the control */
+} __packed;
+
+struct gb_audio_topology {
+	__u8	num_dais;
+	__u8	num_controls;
+	__u8	num_widgets;
+	__u8	num_routes;
+	__u32	size_dais;
+	__u32	size_controls;
+	__u32	size_widgets;
+	__u32	size_routes;
+	/*
+	 * struct gb_audio_dai		dai[num_dais];
+	 * struct gb_audio_control	controls[num_controls];
+	 * struct gb_audio_widget	widgets[num_widgets];
+	 * struct gb_audio_route	routes[num_routes];
+	 */
+	__u8	data[0];
+} __packed;
+
+struct gb_audio_get_topology_size_response {
+	__le16	size;
+} __packed;
+
+struct gb_audio_get_topology_response {
+	struct gb_audio_topology	topology;
+} __packed;
+
+struct gb_audio_get_control_request {
+	__u8	control_id;
+	__u8	index;
+} __packed;
+
+struct gb_audio_get_control_response {
+	struct gb_audio_ctl_elem_value	value;
+} __packed;
+
+struct gb_audio_set_control_request {
+	__u8	control_id;
+	__u8	index;
+	struct gb_audio_ctl_elem_value	value;
+} __packed;
+
+struct gb_audio_enable_widget_request {
+	__u8	widget_id;
+} __packed;
+
+struct gb_audio_disable_widget_request {
+	__u8	widget_id;
+} __packed;
+
+struct gb_audio_get_pcm_request {
+	__le16	data_cport;
+} __packed;
+
+struct gb_audio_get_pcm_response {
+	__le32	format;
+	__le32	rate;
+	__u8	channels;
+	__u8	sig_bits;
+} __packed;
+
+struct gb_audio_set_pcm_request {
+	__le16	data_cport;
+	__le32	format;
+	__le32	rate;
+	__u8	channels;
+	__u8	sig_bits;
+} __packed;
+
+struct gb_audio_set_tx_data_size_request {
+	__le16	data_cport;
+	__le16	size;
+} __packed;
+
+struct gb_audio_get_tx_delay_request {
+	__le16	data_cport;
+} __packed;
+
+struct gb_audio_get_tx_delay_response {
+	__le32	delay;
+} __packed;
+
+struct gb_audio_activate_tx_request {
+	__le16	data_cport;
+} __packed;
+
+struct gb_audio_deactivate_tx_request {
+	__le16	data_cport;
+} __packed;
+
+struct gb_audio_set_rx_data_size_request {
+	__le16	data_cport;
+	__le16	size;
+} __packed;
+
+struct gb_audio_get_rx_delay_request {
+	__le16	data_cport;
+} __packed;
+
+struct gb_audio_get_rx_delay_response {
+	__le32	delay;
+} __packed;
+
+struct gb_audio_activate_rx_request {
+	__le16	data_cport;
+} __packed;
+
+struct gb_audio_deactivate_rx_request {
+	__le16	data_cport;
+} __packed;
+
+struct gb_audio_jack_event_request {
+	__u8	widget_id;
+	__u8	widget_type;
+	__u8	event;
+} __packed;
+
+struct gb_audio_button_event_request {
+	__u8	widget_id;
+	__u8	button_id;
+	__u8	event;
+} __packed;
+
+struct gb_audio_streaming_event_request {
+	__le16	data_cport;
+	__u8	event;
+} __packed;
+
+struct gb_audio_send_data_request {
+	__le64	timestamp;
+	__u8	data[0];
+} __packed;
+
 #endif /* __GREYBUS_PROTOCOLS_H */