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-rw-r--r--tools/check-usb-chip.c210
1 files changed, 210 insertions, 0 deletions
diff --git a/tools/check-usb-chip.c b/tools/check-usb-chip.c
index 68b8f79..e851855 100644
--- a/tools/check-usb-chip.c
+++ b/tools/check-usb-chip.c
@@ -4063,6 +4063,213 @@ check_genesys (libusb_device_handle * handle,
return "GL646_HP";
}
+/********** the lm983x section **********/
+
+static int
+lm983x_wb (libusb_device_handle *handle, unsigned char reg, unsigned char val)
+{
+ unsigned char buf[5];
+ int written;
+ int result;
+
+ buf[0] = 0;
+ buf[1] = reg;
+ buf[2] = 0;
+ buf[3] = 1;
+ buf[4] = val;
+
+ result = libusb_bulk_transfer(handle, 0x03, buf, 5, &written, TIMEOUT);
+ if (result < 0)
+ return 0;
+
+ if (written != 5)
+ return 0;
+
+ return 1;
+}
+
+static int
+lm983x_rb (libusb_device_handle *handle, unsigned char reg, unsigned char *val)
+{
+ unsigned char buf[5];
+ int result;
+ int tfx;
+
+ buf[0] = 1;
+ buf[1] = reg;
+ buf[2] = 0;
+ buf[3] = 1;
+
+ result = libusb_bulk_transfer(handle, 0x03, buf, 4, &tfx, TIMEOUT);
+ if (result < 0)
+ return 0;
+
+ if (tfx != 4)
+ return 0;
+
+ result = libusb_bulk_transfer(handle, 0x82, val, 1, &tfx, TIMEOUT);
+ if (result < 0)
+ return 0;
+
+ if (tfx != 1)
+ return 0;
+
+ return 1;
+}
+
+/** @brief check for known LM983x chip (aka Merlin)
+ *
+ * Try to check if the scanner uses a LM983x ASIC.
+ *
+ * @param dev libusb device
+ * @param hdl libusb opened handle
+ * @param config0 configuration 0 from get config _descriptor
+ * @return a string with ASIC name, or NULL if not recognized
+ */
+static char *
+check_merlin(libusb_device_handle * handle,
+ struct libusb_device_descriptor desc,
+ struct libusb_config_descriptor *config0)
+{
+ unsigned char val;
+ int result;
+
+ if (verbose > 2)
+ printf (" checking for LM983[1,2,3] ...\n");
+
+ /* Check device descriptor */
+ if (((desc.bDeviceClass != LIBUSB_CLASS_VENDOR_SPEC)
+ && (desc.bDeviceClass != 0))
+ || (config0->interface[0].altsetting[0].bInterfaceClass !=
+ LIBUSB_CLASS_VENDOR_SPEC))
+ {
+ if (verbose > 2)
+ printf
+ (" this is not a LM983x (bDeviceClass = %d, bInterfaceClass = %d)\n",
+ desc.bDeviceClass,
+ config0->interface[0].altsetting[0].bInterfaceClass);
+ return 0;
+ }
+ if ((desc.bcdUSB != 0x110)
+ && (desc.bcdUSB != 0x101)
+ && (desc.bcdUSB != 0x100))
+ {
+ if (verbose > 2)
+ printf (" this is not a LM983x (bcdUSB = 0x%x)\n", desc.bcdUSB);
+ return 0;
+ }
+ if (desc.bDeviceSubClass != 0x00)
+ {
+ if (verbose > 2)
+ printf (" this is not a LM983x (bDeviceSubClass = 0x%x)\n",
+ desc.bDeviceSubClass);
+ return 0;
+ }
+ if ((desc.bDeviceProtocol != 0) &&
+ (desc.bDeviceProtocol != 0xff))
+ {
+ if (verbose > 2)
+ printf (" this is not a LM983x (bDeviceProtocol = 0x%x)\n",
+ desc.bDeviceProtocol);
+ return 0;
+ }
+
+ /* Check endpoints */
+ if (config0->interface[0].altsetting[0].bNumEndpoints != 3)
+ {
+ if (verbose > 2)
+ printf (" this is not a LM983x (bNumEndpoints = %d)\n",
+ config0->interface[0].altsetting[0].bNumEndpoints);
+ return 0;
+ }
+
+ if ((config0->interface[0].altsetting[0].endpoint[0].bEndpointAddress != 0x81)
+ || (config0->interface[0].altsetting[0].endpoint[0].bmAttributes != 0x03)
+ || (config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize != 0x1)
+ || (config0->interface[0].altsetting[0].endpoint[0].bInterval != 0x10))
+ {
+ if (verbose > 2)
+ printf
+ (" this is not a LM983x (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+ "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+ config0->interface[0].altsetting[0].endpoint[0].bEndpointAddress,
+ config0->interface[0].altsetting[0].endpoint[0].bmAttributes,
+ config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize,
+ config0->interface[0].altsetting[0].endpoint[0].bInterval);
+ return 0;
+ }
+
+ if ((config0->interface[0].altsetting[0].endpoint[1].bEndpointAddress != 0x82)
+ || (config0->interface[0].altsetting[0].endpoint[1].bmAttributes != 0x02)
+ || (config0->interface[0].altsetting[0].endpoint[1].wMaxPacketSize != 0x40)
+ /* Currently disabled as we have some problems in detection here ! */
+ /*|| (config0->interface[0].altsetting[0].endpoint[1].bInterval != 0) */
+ )
+ {
+ if (verbose > 2)
+ printf
+ (" this is not a LM983x (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+ "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+ config0->interface[0].altsetting[0].endpoint[1].bEndpointAddress,
+ config0->interface[0].altsetting[0].endpoint[1].bmAttributes,
+ config0->interface[0].altsetting[0].endpoint[1].wMaxPacketSize,
+ config0->interface[0].altsetting[0].endpoint[1].bInterval);
+ return 0;
+ }
+
+ if ((config0->interface[0].altsetting[0].endpoint[2].bEndpointAddress != 0x03)
+ || (config0->interface[0].altsetting[0].endpoint[2].bmAttributes != 0x02)
+ || (config0->interface[0].altsetting[0].endpoint[2].wMaxPacketSize != 0x40)
+ /* Currently disabled as we have some problems in detection here ! */
+ /* || (config0->interface[0].altsetting[0].endpoint[2].bInterval != 0) */
+ )
+ {
+ if (verbose > 2)
+ printf
+ (" this is not a LM983x (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+ "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+ config0->interface[0].altsetting[0].endpoint[2].bEndpointAddress,
+ config0->interface[0].altsetting[0].endpoint[2].bmAttributes,
+ config0->interface[0].altsetting[0].endpoint[2].wMaxPacketSize,
+ config0->interface[0].altsetting[0].endpoint[2].bInterval);
+ return 0;
+ }
+
+ result = lm983x_wb (handle, 0x07, 0x00);
+ if (1 == result)
+ result = lm983x_wb (handle, 0x08, 0x02);
+ if (1 == result)
+ result = lm983x_rb (handle, 0x07, &val);
+ if (1 == result)
+ result = lm983x_rb (handle, 0x08, &val);
+ if (1 == result)
+ result = lm983x_rb (handle, 0x69, &val);
+
+ if (0 == result)
+ {
+ if (verbose > 2)
+ printf (" Couldn't access LM983x registers.\n");
+ return 0;
+ }
+
+ switch (val)
+ {
+ case 4:
+ return "LM9832/3";
+ break;
+ case 3:
+ return "LM9831";
+ break;
+ case 2:
+ return "LM9830";
+ break;
+ default:
+ return "LM983x?";
+ break;
+ }
+}
+
+
char *
check_usb_chip (int verbosity,
struct libusb_device_descriptor desc,
@@ -4102,6 +4309,9 @@ check_usb_chip (int verbosity,
/* now USB is opened and set up, actual chip detection */
if (!chip_name)
+ chip_name = check_merlin (hdl, desc, config0);
+
+ if (!chip_name)
chip_name = check_gt6801 (hdl, desc, config0);
if (!chip_name)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 00:12:50 +0000