static int flash_question(struct vmm_chardev *cdev)
{
char ans = 0;
vmm_cprintf(cdev, "Continue [Y/n]?\n");
ans = vmm_cgetc(cdev, FALSE);
vmm_printf("\n");
return (ans == '\n') || (ans == 'y') || (ans == 'Y');
}
static int cmd_i2c_detect(struct vmm_chardev *cdev,
int argc,
char **argv)
{
char ans = 0;
int err = VMM_OK;
int mode = MODE_AUTO;
int first = 0x03;
int last = 0x77;
unsigned int funcs = 0;
struct i2c_adapter *adap = NULL;
err = cmd_i2c_common(cdev, argc, argv, &adap, &funcs);
if (VMM_OK != err) {
return err;
}
if (argc >= 4) {
if (!strcmp(argv[3], "read")) {
mode = MODE_READ;
} else if (!strcmp(argv[3], "quick")) {
mode = MODE_QUICK;
} else {
vmm_cprintf(cdev, "Unknown mode %s\n", mode);
}
}
if (!(funcs & (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_READ_BYTE))) {
vmm_cprintf(cdev, "Error: Bus doesn't support detection "
"commands\n");
err = VMM_EFAIL;
goto out;
}
if (mode == MODE_AUTO) {
if (!(funcs & I2C_FUNC_SMBUS_QUICK))
vmm_cprintf(cdev, "Warning: Can't use SMBus Quick "
"Write command, will skip some "
"addresses\n");
if (!(funcs & I2C_FUNC_SMBUS_READ_BYTE))
vmm_cprintf(cdev, "Warning: Can't use SMBus Receive "
"Byte command, will skip some "
"addresses\n");
}
vmm_cprintf(cdev, "WARNING! This program can confuse your I2C "
"bus, cause data loss and worse!\n");
vmm_cprintf(cdev, "Probing %s", adap->name);
if (MODE_QUICK == mode) {
vmm_cprintf(cdev, " using quick write commands\n");
} else if (MODE_READ == mode) {
vmm_cprintf(cdev, " using receive byte commands\n");
} else {
vmm_cprintf(cdev, " (auto)\n");
}
vmm_cprintf(cdev, " address range 0x%02x-0x%02x.\n", first, last);
vmm_cprintf(cdev, "Continue? [Y/n] ");
ans = vmm_cgetc(cdev, 0);
if ('\n' != ans && 'y' != ans && 'Y' != ans) {
vmm_cprintf(cdev, "Aborting on user request.\n");
goto out;
}
err = i2c_scan_bus(cdev, adap, mode, funcs, first, last);
out:
i2c_put_adapter(adap);
return err;
}
