94e7a77d01
This re-implements the custom serial concept in a new way. This way doesn't touch any of the backend code, it just introduces a optional redirection layer in the existing serial backends. This implementation supports more serial operations to, so we can support more backends this way. Hooking into the existing serial backends might look ugly but its probably the best way to make sure this patch conflicts as little as possible with upstream. Signed-off-by: Anton Lundin <glance@acc.umu.se> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
#ifndef CUSTOM_SERIAL_H
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#define CUSTOM_SERIAL_H
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#include "common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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// Verbatim copy from src/serial.h
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#ifndef __SERIAL_TYPES__
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#define __SERIAL_TYPES__
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// Don't re-declare when we're internal
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/**
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* The parity checking scheme.
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*/
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typedef enum dc_parity_t {
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DC_PARITY_NONE, /**< No parity */
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DC_PARITY_ODD, /**< Odd parity */
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DC_PARITY_EVEN, /**< Even parity */
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DC_PARITY_MARK, /**< Mark parity (always 1) */
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DC_PARITY_SPACE /**< Space parity (alwasy 0) */
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} dc_parity_t;
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/**
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* The number of stop bits.
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*/
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typedef enum dc_stopbits_t {
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DC_STOPBITS_ONE, /**< 1 stop bit */
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DC_STOPBITS_ONEPOINTFIVE, /**< 1.5 stop bits*/
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DC_STOPBITS_TWO /**< 2 stop bits */
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} dc_stopbits_t;
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/**
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* The flow control.
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*/
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typedef enum dc_flowcontrol_t {
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DC_FLOWCONTROL_NONE, /**< No flow control */
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DC_FLOWCONTROL_HARDWARE, /**< Hardware (RTS/CTS) flow control */
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DC_FLOWCONTROL_SOFTWARE /**< Software (XON/XOFF) flow control */
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} dc_flowcontrol_t;
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/**
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* The direction of the data transmission.
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*/
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typedef enum dc_direction_t {
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DC_DIRECTION_INPUT = 0x01, /**< Input direction */
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DC_DIRECTION_OUTPUT = 0x02, /**< Output direction */
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DC_DIRECTION_ALL = DC_DIRECTION_INPUT | DC_DIRECTION_OUTPUT /**< All directions */
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} dc_direction_t;
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/**
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* The serial line signals.
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*/
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typedef enum dc_line_t {
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DC_LINE_DCD = 0x01, /**< Data carrier detect */
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DC_LINE_CTS = 0x02, /**< Clear to send */
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DC_LINE_DSR = 0x04, /**< Data set ready */
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DC_LINE_RNG = 0x08, /**< Ring indicator */
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} dc_line_t;
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#endif /* __SERIAL_TYPES__ */
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typedef struct dc_custom_serial_t
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{
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void *userdata;
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dc_status_t (*open) (void **userdata, const char *name);
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dc_status_t (*close) (void **userdata);
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dc_status_t (*read) (void **userdata, void* data, size_t size, size_t *actual);
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dc_status_t (*write) (void **userdata, const void* data, size_t size, size_t *actual);
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dc_status_t (*purge) (void **userdata, dc_direction_t);
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dc_status_t (*get_available) (void **userdata, size_t *value);
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dc_status_t (*set_timeout) (void **userdata, long timeout);
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dc_status_t (*configure) (void **userdata, unsigned int baudrate, unsigned int databits, dc_parity_t parity, dc_stopbits_t stopbits, dc_flowcontrol_t flowcontrol);
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dc_status_t (*set_dtr) (void **userdata, int level);
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dc_status_t (*set_rts) (void **userdata, int level);
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dc_status_t (*set_halfduplex) (void **userdata, unsigned int value);
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dc_status_t (*set_break) (void **userdata, unsigned int level);
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//dc_serial_set_latency (dc_serial_t *device, unsigned int milliseconds) - Unused
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//dc_serial_get_lines (dc_serial_t *device, unsigned int *value) - Unused
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//dc_serial_flush (dc_serial_t *device) - No device interaction
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//dc_serial_sleep (dc_serial_t *device, unsigned int timeout) - No device interaction
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} dc_custom_serial_t;
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* CUSTOM_SERIAL_H */
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