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FMC ADC 100M 14b 4cha - Software
Commit 6b7610c1 authored by Michel Arruat's avatar Michel Arruat Committed by Alessandro Rubini
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lib: implement open_by_lun (undocumented and to be fixed) 

Signed-off-by: Alessandro Rubini's avatarAlessandro Rubini <rubini@gnudd.com>
parent 27a347f2
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Showing with 22 additions and 11 deletions
lib/boards.c
View file @ 6b7610c1
......@@ -9,8 +9,11 @@
* version 2 as published by the Free Software Foundation or, at your
* option, any later version.
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <limits.h>
#include "fmcadc-lib.h"
#include "fmcadc-lib-int.h"
......@@ -98,24 +101,32 @@ struct fmcadc_dev *fmcadc_open(char *name, unsigned int dev_id,
return b->fa_op->open(b, dev_id, buffersize, nbuffer, flags);
}
#define FMCADC_PATH_PATTERN "/dev/%s.%d"
/* Open by lun should lookup a database */
struct fmcadc_dev *fmcadc_open_by_lun(char *name, int lun,
unsigned long buffersize,
unsigned int nbuffer,
unsigned long flags)
{
const struct fmcadc_board_type *b;
b = find_board(name);
if (!b)
ssize_t ret;
char dev_id_str[8];
char path[PATH_MAX];
int dev_id;
ret = snprintf(path, sizeof(path), "/dev/%s.%d",
"adc-100m14b" /* FIXME: this must be generic */,
lun);
if (ret < 0 || ret >= sizeof(path)) {
errno = EINVAL;
return NULL;
/*
* FIXME: open_by_lun should lookup the database and get dev_id
* return b->fa_op->open( .... dev_id ...);
*/
errno = ENOSYS;
return NULL;
}
ret = readlink(path, dev_id_str, sizeof(dev_id_str));
if (sscanf(dev_id_str, "%4x", &dev_id) != 1) {
errno = ENODEV;
return NULL;
}
return fmcadc_open(name, dev_id, buffersize, nbuffer, flags);
}
......
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