greybus: Initial I2S definitions

These are definitions from Mark that I've consolidated into
one header file. I'd like to get these merged at some point
soon, so the audio driver and gbsim work can avoid having
out-of-tree dependencies.
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/greybus_manifest.h

@@ -35,7 +35,7 @@ enum greybus_protocol {
 	GREYBUS_PROTOCOL_SDIO		= 0x07,
 	GREYBUS_PROTOCOL_BATTERY	= 0x08,
 	GREYBUS_PROTOCOL_PWM		= 0x09,
-	GREYBUS_PROTOCOL_I2S		= 0x0a,
+	GREYBUS_PROTOCOL_I2S_MGMT	= 0x0a,
 	GREYBUS_PROTOCOL_SPI		= 0x0b,
 	GREYBUS_PROTOCOL_DISPLAY	= 0x0c,
 	GREYBUS_PROTOCOL_CAMERA		= 0x0d,
@@ -43,6 +43,8 @@ enum greybus_protocol {
 	GREYBUS_PROTOCOL_LED		= 0x0f,
 	GREYBUS_PROTOCOL_VIBRATOR	= 0x10,
 	GREYBUS_PROTOCOL_LOOPBACK	= 0x11,
+	GREYBUS_PROTOCOL_I2S_RECEIVER	= 0x12,
+	GREYBUS_PROTOCOL_I2S_TRANSMITTER = 0x13,
 		/* ... */
 	GREYBUS_PROTOCOL_VENDOR		= 0xff,
 };

drivers/staging/greybus/i2s.h

+#ifndef __GB_I2S_H__
+#define __GB_I2S_H__
+
+#ifndef BIT
+#define BIT(n) (1UL << (n))
+#endif
+
+#define GB_I2S_MGMT_TYPE_PROTOCOL_VERSION		0x01
+#define GB_I2S_MGMT_TYPE_GET_SUPPORTED_CONFIGURATIONS	0x02
+#define GB_I2S_MGMT_TYPE_SET_CONFIGURATION		0x03
+#define GB_I2S_MGMT_TYPE_SET_SAMPLES_PER_MESSAGE	0x04
+#define GB_I2S_MGMT_TYPE_GET_PROCESSING_DELAY		0x05
+#define GB_I2S_MGMT_TYPE_SET_START_DELAY		0x06
+#define GB_I2S_MGMT_TYPE_ACTIVATE_CPORT			0x07
+#define GB_I2S_MGMT_TYPE_DEACTIVATE_CPORT		0x08
+#define GB_I2S_MGMT_TYPE_REPORT_EVENT			0x09
+
+#define GB_I2S_MGMT_BYTE_ORDER_NA			BIT(0)
+#define GB_I2S_MGMT_BYTE_ORDER_BE			BIT(1)
+#define GB_I2S_MGMT_BYTE_ORDER_LE			BIT(2)
+
+#define GB_I2S_MGMT_SPATIAL_LOCATION_FL			BIT(0)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_FR			BIT(1)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_FC			BIT(2)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_LFE		BIT(3)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_BL			BIT(4)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_BR			BIT(5)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_FLC		BIT(6)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_FRC		BIT(7)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_C			BIT(8) /* BC in USB */
+#define GB_I2S_MGMT_SPATIAL_LOCATION_SL			BIT(9)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_SR			BIT(10)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TC			BIT(11)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TFL		BIT(12)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TFC		BIT(13)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TFR		BIT(14)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TBL		BIT(15)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TBC		BIT(16)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TBR		BIT(17)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TFLC		BIT(18)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TFRC		BIT(19)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_LLFE		BIT(20)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_RLFE		BIT(21)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TSL		BIT(22)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_TSR		BIT(23)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_BC			BIT(24)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_BLC		BIT(25)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_BRC		BIT(26)
+#define GB_I2S_MGMT_SPATIAL_LOCATION_RD			BIT(31)
+
+#define GB_I2S_MGMT_PROTOCOL_PCM			BIT(0)
+#define GB_I2S_MGMT_PROTOCOL_I2S			BIT(1)
+#define GB_I2S_MGMT_PROTOCOL_LR_STEREO			BIT(2)
+
+#define GB_I2S_MGMT_ROLE_MASTER				BIT(0)
+#define GB_I2S_MGMT_ROLE_SLAVE				BIT(1)
+
+#define GB_I2S_MGMT_POLARITY_NORMAL			BIT(0)
+#define GB_I2S_MGMT_POLARITY_REVERSED			BIT(1)
+
+#define GB_I2S_MGMT_EDGE_RISING				BIT(0)
+#define GB_I2S_MGMT_EDGE_FALLING			BIT(1)
+
+#define GB_I2S_MGMT_EVENT_UNSPECIFIED			0x1
+#define GB_I2S_MGMT_EVENT_HALT				0x2
+#define GB_I2S_MGMT_EVENT_INTERNAL_ERROR		0x3
+#define GB_I2S_MGMT_EVENT_PROTOCOL_ERROR		0x4
+#define GB_I2S_MGMT_EVENT_FAILURE			0x5
+#define GB_I2S_MGMT_EVENT_OUT_OF_SEQUENCE		0x6
+#define GB_I2S_MGMT_EVENT_UNDERRUN			0x7
+#define GB_I2S_MGMT_EVENT_OVERRUN			0x8
+#define GB_I2S_MGMT_EVENT_CLOCKING			0x9
+#define GB_I2S_MGMT_EVENT_DATA_LEN			0xa
+
+struct gb_i2s_mgmt_configuration {
+	__le32	sample_frequency;
+	__u8	num_channels;
+	__u8	bytes_per_channel;
+	__u8	byte_order;
+	__u8	pad;
+	__le32	spatial_locations;
+	__le32	ll_protocol;
+	__u8	ll_bclk_role;
+	__u8	ll_wclk_role;
+	__u8	ll_wclk_polarity;
+	__u8	ll_wclk_change_edge;
+	__u8	ll_wclk_tx_edge;
+	__u8	ll_wclk_rx_edge;
+	__u8	ll_data_offset;
+	__u8	ll_pad;
+};
+
+/* get supported configurations request has no payload */
+struct gb_i2s_mgmt_get_supported_configurations_response {
+	__u8					config_count;
+	__u8					pad[3];
+	struct gb_i2s_mgmt_configuration	config[0];
+};
+
+struct gb_i2s_mgmt_set_configuration_request {
+	struct gb_i2s_mgmt_configuration	config;
+};
+/* set configuration response has no payload */
+
+struct gb_i2s_mgmt_set_samples_per_message_request {
+	__le16	samples_per_message;
+};
+/* set samples per message response has no payload */
+
+/* get processing request delay has no payload */
+struct gb_i2s_mgmt_get_processing_delay_response {
+	__le32	microseconds;
+};
+
+struct gb_i2s_mgmt_set_start_delay_request {
+	__le32	microseconds;
+};
+/* set start delay response has no payload */
+
+struct gb_i2s_mgmt_activate_cport_request {
+	__le16	cport;
+};
+/* activate cport response has no payload */
+
+struct gb_i2s_mgmt_deactivate_cport_request {
+	__le16	cport;
+};
+/* deactivate cport response has no payload */
+
+struct gb_i2s_mgmt_report_event_request {
+	__u8	event;
+};
+/* report event response has no payload */
+
+#define GB_I2S_DATA_TYPE_PROTOCOL_VERSION		0x01
+#define GB_I2S_DATA_TYPE_SEND_DATA			0x02
+
+struct gb_i2s_send_data_request {
+	__le32	sample_number;
+	__le32	size;
+	__u8	data[0];
+};
+/* send data has no response at all */
+
+#endif /* __GB_I2S_H__ */