c36b0b9752
The wcd-spi-ac (access control) driver exposes character device to userspace to indicate information regarding WCD SPI usage. Add uapi header file with the commands and data expected by the character driver. Change-Id: I41dfc3181041c7e7a1bad8695fa723d3a965036b Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
#ifndef __UAPI_WCD_SPI_AC_PARAMS_H__
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#define __UAPI_WCD_SPI_AC_PARAMS_H__
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#include <linux/types.h>
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#define WCD_SPI_AC_CMD_CONC_BEGIN 0x01
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#define WCD_SPI_AC_CMD_CONC_END 0x02
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#define WCD_SPI_AC_CMD_BUF_DATA 0x03
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#define WCD_SPI_AC_MAX_BUFFERS 2
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#define WCD_SPI_AC_MAX_CH_PER_BUF 8
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#define WCD_SPI_AC_CLIENT_CDEV_NAME "wcd-spi-ac-client"
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#define WCD_SPI_AC_PROCFS_DIR_NAME "wcd-spi-ac"
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#define WCD_SPI_AC_PROCFS_STATE_NAME "svc-state"
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/*
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* wcd_spi_ac_buf_data:
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* Buffer address for one buffer. Should have data
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* for all the channels. If channels are unused, the
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* value must be NULL.
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*
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* @addr:
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* Address where each channel of the buffer starts.
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*/
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struct wcd_spi_ac_buf_data {
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__u32 addr[WCD_SPI_AC_MAX_CH_PER_BUF];
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} __packed;
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/*
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* wcd_spi_ac_write_cmd:
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* Data sent to the driver's write interface should
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* be packed in this format.
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*
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* @cmd_type:
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* Indicates the type of command that is sent. Should
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* be one of the valid commands defined with
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* WCD_SPI_AC_CMD_*
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* @payload:
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* No payload for:
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* WCD_SPI_AC_CMD_CONC_BEGIN
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* WCD_SPI_AC_CMD_CONC_END
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* Upto WCD_SPI_AC_MAX_BUFFERS of type
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* struct wcd_spi_ac_buf_data for:
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* WCD_SPI_AC_CMD_BUF_DATA
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*/
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struct wcd_spi_ac_write_cmd {
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__u32 cmd_type;
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__u8 payload[0];
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} __packed;
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#endif /* end of __UAPI_WCD_SPI_AC_PARAMS_H__ */
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