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meta-sysmocom-bsp/recipes-bsp/sob-odu/files/usb2514.c

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/* usb2514 - small utility to set configuration of USB2514 hub chip
* (C) 2013-2014 by sysmocom - s.f.m.c. GmbH, Author: Harald Welte
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include <limits.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
/* #include <linux/i2c-dev.h> */
#include "i2c-dev.h"
#define USB2514_SLAVE_ADDR 0x2C
#define BOARD_VER_PATH "/sys/devices/platform/sob-odu.0/board_version"
#define RESET_PATH "/sys/devices/platform/sob-odu.0/gpio_hub_reset/value"
#define RESET_PATH_OLD "/sys/class/gpio/gpio62/value"
/* Default configuration as per data sheet */
static const uint8_t usb2514_default[256] = {
0x24, 0x04, 0x14, 0x25, 0xB3, 0x0B, 0x9B, 0x20, /* 0x00 */
0x02, 0x00, 0x00, 0x00, 0x01, 0x32, 0x01, 0x32, /* 0x08 */
0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x20 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x40 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x48 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x50 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x78 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x98 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xf0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* 0xf8 */
};
/* Default configuration as per data sheet */
static uint8_t usb2514_odu[256] = {
0x24, 0x04, 0x14, 0x25, 0xB3, 0x0B, 0x9B, 0x20, /* 0x00 */
0x02, 0x00, 0x00, 0x00, 0x01, 0x32, 0x01, 0x32, /* 0x08 */
0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x20 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x40 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x48 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x50 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x78 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x98 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe8 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xf0 */
#if 1 /* swap modem + AIS ports (1,2,3) */
0x00, 0x00, 0x0E, 0x00, 0x00, 0x00, 0x00, 0x01, /* 0xf8 */
#else
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* 0xf8 */
#endif
};
static int g_fd;
static unsigned long get_support(void)
{
int rc;
unsigned long funcs;
rc = ioctl(g_fd, I2C_FUNCS, funcs);
printf("supported functions: 0x%lx\n", funcs);
return funcs;
}
static int write_regs(const uint8_t *regs)
{
unsigned int i;
int rc;
for (i = 0; i < 256; i+= 32) {
printf("Writing block of %u bytes at index %u\n", 32, i);
rc = i2c_smbus_write_block_data(g_fd, i, 32, regs+i);
if (rc < 0)
fprintf(stderr, "Error writing registers at "
"offset %u: %d\n", i, rc);
}
return rc;
}
/* attempt to obtain the board version from sysfs */
static int get_board_version(void)
{
FILE *f;
unsigned int ver;
f = fopen(BOARD_VER_PATH, "r");
if (!f)
return -1;
if (fscanf(f, "%u", &ver) != 1) {
fclose(f);
return -2;
}
fclose(f);
return ver;
}
/* attempt to reset the hub via sysfs */
static int reset_hub(void)
{
FILE *f;
int invert_logic = 0;
f = fopen(RESET_PATH, "w");
if (!f) {
f = fopen(RESET_PATH_OLD, "w");
if (!f)
return -1;
invert_logic = 1;
}
if (invert_logic)
fputs("0", f);
else
fputs("1", f);
usleep(10000);
rewind(f);
if (invert_logic)
fputs("1", f);
else
fputs("0", f);
fclose(f);
return 0;
}
int main(int argc, char **argv)
{
int rc;
int board_version;
int adapter_nr;
long slave_addr = USB2514_SLAVE_ADDR;
char filename[PATH_MAX];
if (argc < 2) {
fprintf(stderr, "You have to specify I2C bus number\n");
exit(2);
}
adapter_nr = atoi(argv[1]);
snprintf(filename, sizeof(filename)-1, "/dev/i2c-%d", adapter_nr);
rc = open(filename, O_RDWR);
if (rc < 0) {
fprintf(stderr, "Error opening the device: %d\n", rc);
exit(1);
}
g_fd = rc;
get_support();
board_version = get_board_version();
if (board_version >= 3) {
/* on board version 3 and later we don't need to swap
* USB downlink port 1 */
printf("Detected board >= v3, not swapping DN1\n");
usb2514_odu[0xFA] = 0x0C;
} else if (board_version == 1) {
/* ports are still swapped in hardware */
printf("Detected board v1, not swapping any ports\n");
usb2514_odu[0xFA] = 0x00;
} else if (board_version == 2) {
printf("Detected board v2, swapping DN1, DN2 and DN3\n");
/* default */
} else {
printf("Assuming board v2, swapping DN1, DN2 and DN3\n");
/* default */
}
rc = ioctl(g_fd, I2C_SLAVE, slave_addr);
if (rc < 0) {
fprintf(stderr, "Error setting slave addr: %d\n", rc);
exit(1);
}
/* First reset the USB hub before loading data into it */
if (reset_hub() < 0) {
fprintf(stderr, "Couldn't reset the USB hub!\n");
}
rc = write_regs(usb2514_odu);
if (rc < 0) {
fprintf(stderr, "Error writing default regs: %d\n", rc);
exit(1);
}
exit(0);
}
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