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axehelper: add --trans (transaction) for i2c reg r/w

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This commit is contained in:
Jaroslav Kysela 2015-04-20 15:41:12 +02:00
parent 98e0d6d0e2
commit 94a9177c78
1 changed files with 9 additions and 8 deletions
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17
tools/axehelper.c
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@ -2,6 +2,7 @@
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <malloc.h>
#include <time.h>
#include <fcntl.h>
#include <sys/types.h>
@ -933,12 +934,12 @@ i2c_open_check(void)
static u8 i2c_repeater[3] = { 0xf1, 0x2a, 0xbc };
static int
i2c_reg_read(int addr, int reg, u8 *buf, int cnt)
i2c_reg_read(int addr, int reg, u8 *buf, int cnt, int trans)
{
u8 buf1[3];
struct i2c_rdwr_ioctl_data d;
struct i2c_msg m[4];
int mi = 0, fmask = 0;
int mi = 0, fmask = trans ? I2C_M_NOREPSTART : 0;
if (i2c_open_check())
return -1;
@ -996,12 +997,12 @@ i2c_reg_read(int addr, int reg, u8 *buf, int cnt)
}
static int
i2c_reg_write(int addr, int reg, u8 *buf, int cnt)
i2c_reg_write(int addr, int reg, u8 *buf, int cnt, int trans)
{
u8 buf1[32];
struct i2c_rdwr_ioctl_data d;
struct i2c_msg m[2];
int mi = 0, fmask = 0;
int mi = 0, fmask = trans ? I2C_M_NOREPSTART : 0;
if (i2c_open_check())
return -1;
@ -1055,7 +1056,7 @@ i2c_scan(void)
if (i2c_open(i, path))
continue;
a = 0xd0;
r = i2c_reg_read(a, 0xf000, &v, 1);
r = i2c_reg_read(a, 0xf000, &v, 1, 1);
if (r >= 0)
printf("I2C read succeed for %s, addr 0x%02x: 0x%02x\n", path, a, v);
close(i2c_fd);
@ -1137,9 +1138,9 @@ main(int _argc, char *_argv[])
int c = argc > 4 ? strtol(argv[4], NULL, 0) : 1;
u8 buf[16];
char buf2[256];
if (a <= 0 || r < 0 || c < 0)
if (a < 0 || r < 0 || c < 0)
exit(EXIT_FAILURE);
i = i2c_reg_read(a, r, buf, c > sizeof(buf) ? sizeof(buf) : c);
i = i2c_reg_read(a, r, buf, c > sizeof(buf) ? sizeof(buf) : c, find_opt("trans"));
if (i < 0) {
printf("Unable to read register 0x%x from addr 0x%x\n", r, a);
exit(EXIT_FAILURE);
@ -1175,7 +1176,7 @@ main(int _argc, char *_argv[])
buf[j-4] = strtol(argv[j], NULL, 0);
if (a <= 0 && r < 0)
exit(EXIT_FAILURE);
i = i2c_reg_write(a, r, buf, j);
i = i2c_reg_write(a, r, buf, j, find_opt("trans"));
if (i < 0) {
printf("Unable to write register 0x%x to addr 0x%x\n", r, a);
exit(EXIT_FAILURE);