SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
{
libusb_device **devlist;
struct sr_usb_dev_inst *usb;
struct libusb_device_descriptor des;
struct dev_context *devc;
struct drv_context *drvc;
struct version_info vi;
int ret, i, device_count;
uint8_t revid;
char connection_id[64];
drvc = di->context;
devc = sdi->priv;
usb = sdi->conn;
if (sdi->status == SR_ST_ACTIVE)
/* Device is already in use. */
return SR_ERR;
device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
if (device_count < 0) {
sr_err("Failed to get device list: %s.",
libusb_error_name(device_count));
return SR_ERR;
}
for (i = 0; i < device_count; i++) {
libusb_get_device_descriptor(devlist[i], &des);
if (des.idVendor != devc->profile->vid
|| des.idProduct != devc->profile->pid)
continue;
if ((sdi->status == SR_ST_INITIALIZING) ||
(sdi->status == SR_ST_INACTIVE)) {
/*
* Check device by its physical USB bus/port address.
*/
usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
if (strcmp(sdi->connection_id, connection_id))
/* This is not the one. */
continue;
}
if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
if (usb->address == 0xff)
/*
* First time we touch this device after FW
* upload, so we don't know the address yet.
*/
usb->address = libusb_get_device_address(devlist[i]);
} else {
sr_err("Failed to open device: %s.",
libusb_error_name(ret));
break;
}
if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) {
if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
sr_err("Failed to detach kernel driver: %s.",
libusb_error_name(ret));
return SR_ERR;
}
}
}
ret = command_get_fw_version(usb->devhdl, &vi);
if (ret != SR_OK) {
sr_err("Failed to get firmware version.");
break;
}
ret = command_get_revid_version(sdi, &revid);
if (ret != SR_OK) {
sr_err("Failed to get REVID.");
break;
}
/*
* Changes in major version mean incompatible/API changes, so
* bail out if we encounter an incompatible version.
* Different minor versions are OK, they should be compatible.
*/
if (vi.major != FX2LAFW_REQUIRED_VERSION_MAJOR) {
sr_err("Expected firmware version %d.x, "
"got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR,
vi.major, vi.minor);
break;
}
sdi->status = SR_ST_ACTIVE;
sr_info("Opened device on %d.%d (logical) / %s (physical), "
"interface %d, firmware %d.%d.",
usb->bus, usb->address, connection_id,
USB_INTERFACE, vi.major, vi.minor);
sr_info("Detected REVID=%d, it's a Cypress CY7C68013%s.",
revid, (revid != 1) ? " (FX2)" : "A (FX2LP)");
break;
}
libusb_free_device_list(devlist, 1);
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR;
return SR_OK;
}
SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
{
libusb_device **devlist;
struct sr_usb_dev_inst *usb;
struct libusb_device_descriptor des;
struct dev_context *devc;
struct drv_context *drvc;
struct version_info vi;
int ret, skip, i, device_count;
uint8_t revid;
drvc = di->priv;
devc = sdi->priv;
usb = sdi->conn;
if (sdi->status == SR_ST_ACTIVE)
/* Device is already in use. */
return SR_ERR;
skip = 0;
device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
if (device_count < 0) {
sr_err("Failed to get device list: %s.",
libusb_error_name(device_count));
return SR_ERR;
}
for (i = 0; i < device_count; i++) {
if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
sr_err("Failed to get device descriptor: %s.",
libusb_error_name(ret));
continue;
}
if (des.idVendor != devc->profile->vid
|| des.idProduct != devc->profile->pid)
continue;
if (sdi->status == SR_ST_INITIALIZING) {
if (skip != sdi->index) {
/* Skip devices of this type that aren't the one we want. */
skip += 1;
continue;
}
} else if (sdi->status == SR_ST_INACTIVE) {
/*
* This device is fully enumerated, so we need to find
* this device by vendor, product, bus and address.
*/
if (libusb_get_bus_number(devlist[i]) != usb->bus
|| libusb_get_device_address(devlist[i]) != usb->address)
/* This is not the one. */
continue;
}
if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
if (usb->address == 0xff)
/*
* First time we touch this device after FW
* upload, so we don't know the address yet.
*/
usb->address = libusb_get_device_address(devlist[i]);
} else {
sr_err("Failed to open device: %s.",
libusb_error_name(ret));
break;
}
ret = command_get_fw_version(usb->devhdl, &vi);
if (ret != SR_OK) {
sr_err("Failed to get firmware version.");
break;
}
ret = command_get_revid_version(usb->devhdl, &revid);
if (ret != SR_OK) {
sr_err("Failed to get REVID.");
break;
}
/*
* Changes in major version mean incompatible/API changes, so
* bail out if we encounter an incompatible version.
* Different minor versions are OK, they should be compatible.
*/
if (vi.major != FX2LAFW_REQUIRED_VERSION_MAJOR) {
sr_err("Expected firmware version %d.x, "
"got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR,
vi.major, vi.minor);
break;
}
sdi->status = SR_ST_ACTIVE;
sr_info("Opened device %d on %d.%d, "
"interface %d, firmware %d.%d.",
sdi->index, usb->bus, usb->address,
USB_INTERFACE, vi.major, vi.minor);
sr_info("Detected REVID=%d, it's a Cypress CY7C68013%s.",
revid, (revid != 1) ? " (FX2)" : "A (FX2LP)");
break;
}
libusb_free_device_list(devlist, 1);
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR;
return SR_OK;
}
