mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-13 22:25:03 +00:00
137bfbd006
When the greybus drivers were converted to SPDX identifiers for the license text, some license boilerplate was not removed. Clean this up by removing this unneeded text now. Cc: Johan Hovold <johan@kernel.org> Cc: Vaibhav Agarwal <vaibhav.sr@gmail.com> Cc: "Bryan O'Donoghue" <pure.logic@nexus-software.ie> Cc: greybus-dev@lists.linaro.org Cc: devel@driverdev.osuosl.org Acked-by: Mark Greer <mgreer@animalcreekk.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Alex Elder <elder@kernel.org> Link: https://lore.kernel.org/r/20190825055429.18547-3-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
133 lines
4.1 KiB
C
133 lines
4.1 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
|
|
/*
|
|
* Copyright (c) 2015-2016 Google Inc.
|
|
*/
|
|
/*
|
|
* This is a special protocol for configuring communication over the
|
|
* I2S bus between the DSP on the MSM8994 and APBridgeA. Therefore,
|
|
* we can predefine several low-level attributes of the communication
|
|
* because we know that they are supported. In particular, the following
|
|
* assumptions are made:
|
|
* - there are two channels (i.e., stereo)
|
|
* - the low-level protocol is I2S as defined by Philips/NXP
|
|
* - the DSP on the MSM8994 is the clock master for MCLK, BCLK, and WCLK
|
|
* - WCLK changes on the falling edge of BCLK
|
|
* - WCLK low for left channel; high for right channel
|
|
* - TX data is sent on the falling edge of BCLK
|
|
* - RX data is received/latched on the rising edge of BCLK
|
|
*/
|
|
|
|
#ifndef __AUDIO_APBRIDGEA_H
|
|
#define __AUDIO_APBRIDGEA_H
|
|
|
|
#define AUDIO_APBRIDGEA_TYPE_SET_CONFIG 0x01
|
|
#define AUDIO_APBRIDGEA_TYPE_REGISTER_CPORT 0x02
|
|
#define AUDIO_APBRIDGEA_TYPE_UNREGISTER_CPORT 0x03
|
|
#define AUDIO_APBRIDGEA_TYPE_SET_TX_DATA_SIZE 0x04
|
|
/* 0x05 unused */
|
|
#define AUDIO_APBRIDGEA_TYPE_PREPARE_TX 0x06
|
|
#define AUDIO_APBRIDGEA_TYPE_START_TX 0x07
|
|
#define AUDIO_APBRIDGEA_TYPE_STOP_TX 0x08
|
|
#define AUDIO_APBRIDGEA_TYPE_SHUTDOWN_TX 0x09
|
|
#define AUDIO_APBRIDGEA_TYPE_SET_RX_DATA_SIZE 0x0a
|
|
/* 0x0b unused */
|
|
#define AUDIO_APBRIDGEA_TYPE_PREPARE_RX 0x0c
|
|
#define AUDIO_APBRIDGEA_TYPE_START_RX 0x0d
|
|
#define AUDIO_APBRIDGEA_TYPE_STOP_RX 0x0e
|
|
#define AUDIO_APBRIDGEA_TYPE_SHUTDOWN_RX 0x0f
|
|
|
|
#define AUDIO_APBRIDGEA_PCM_FMT_8 BIT(0)
|
|
#define AUDIO_APBRIDGEA_PCM_FMT_16 BIT(1)
|
|
#define AUDIO_APBRIDGEA_PCM_FMT_24 BIT(2)
|
|
#define AUDIO_APBRIDGEA_PCM_FMT_32 BIT(3)
|
|
#define AUDIO_APBRIDGEA_PCM_FMT_64 BIT(4)
|
|
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_5512 BIT(0)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_8000 BIT(1)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_11025 BIT(2)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_16000 BIT(3)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_22050 BIT(4)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_32000 BIT(5)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_44100 BIT(6)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_48000 BIT(7)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_64000 BIT(8)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_88200 BIT(9)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_96000 BIT(10)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_176400 BIT(11)
|
|
#define AUDIO_APBRIDGEA_PCM_RATE_192000 BIT(12)
|
|
|
|
#define AUDIO_APBRIDGEA_DIRECTION_TX BIT(0)
|
|
#define AUDIO_APBRIDGEA_DIRECTION_RX BIT(1)
|
|
|
|
/* The I2S port is passed in the 'index' parameter of the USB request */
|
|
/* The CPort is passed in the 'value' parameter of the USB request */
|
|
|
|
struct audio_apbridgea_hdr {
|
|
__u8 type;
|
|
__le16 i2s_port;
|
|
__u8 data[0];
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_set_config_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
__le32 format; /* AUDIO_APBRIDGEA_PCM_FMT_* */
|
|
__le32 rate; /* AUDIO_APBRIDGEA_PCM_RATE_* */
|
|
__le32 mclk_freq; /* XXX Remove? */
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_register_cport_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
__le16 cport;
|
|
__u8 direction;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_unregister_cport_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
__le16 cport;
|
|
__u8 direction;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_set_tx_data_size_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
__le16 size;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_prepare_tx_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_start_tx_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
__le64 timestamp;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_stop_tx_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_shutdown_tx_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_set_rx_data_size_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
__le16 size;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_prepare_rx_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_start_rx_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_stop_rx_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
} __packed;
|
|
|
|
struct audio_apbridgea_shutdown_rx_request {
|
|
struct audio_apbridgea_hdr hdr;
|
|
} __packed;
|
|
|
|
#endif /*__AUDIO_APBRIDGEA_H */
|