Firmware loader: magical device bytes check updated (accepts all device versions now and accepts possibly loaded firmware, if it is knowing to be working)
Signed-off-by: Torsten Schenk torsten.schenk@zoho.com
diff -Nur a/sound/usb/6fire/firmware.c b/sound/usb/6fire/firmware.c --- a/sound/usb/6fire/firmware.c 2011-04-04 11:26:54.528833002 +0200 +++ b/sound/usb/6fire/firmware.c 2011-04-04 11:25:27.014833002 +0200 @@ -3,12 +3,6 @@ * * Firmware loader * - * Currently not working for all devices. To be able to use the device - * in linux, it is also possible to let the windows driver upload the firmware. - * For that, start the computer in windows and reboot. - * As long as the device is connected to the power supply, no firmware reload - * needs to be performed. - * * Author: Torsten Schenk torsten.schenk@zoho.com * Created: Jan 01, 2011 * Version: 0.3.0 @@ -72,6 +66,10 @@ 0x94, 0x01, 0x5c, 0x02 /* alt 3: 404 EP2 and 604 EP6 (25 fpp) */ };
+static const u8 known_fw_versions[][4] = { + { 0x03, 0x01, 0x0b, 0x00 } +}; + struct ihex_record { u16 address; u8 len; @@ -364,6 +362,25 @@ return 0; }
+/* check, if the firmware version the devices has currently loaded + * is known by this driver. 'version' needs to have 4 bytes version + * info data. */ +static int usb6fire_fw_check(u8 *version) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(known_fw_versions); i++) + if (!memcmp(version, known_fw_versions + i, 4)) + return 0; + + snd_printk(KERN_ERR PREFIX "invalid fimware version in device: " + "%02x %02x %02x %02x. " + "please reconnect to power. if this failure " + "still happens, check your firmware installation.", + version[0], version[1], version[2], version[3]); + return -EINVAL; +} + int usb6fire_fw_init(struct usb_interface *intf) { int i; @@ -379,9 +396,7 @@ "firmware state.\n"); return ret; } - if (buffer[0] != 0xeb || buffer[1] != 0xaa || buffer[2] != 0x55 - || buffer[4] != 0x03 || buffer[5] != 0x01 || buffer[7] - != 0x00) { + if (buffer[0] != 0xeb || buffer[1] != 0xaa || buffer[2] != 0x55) { snd_printk(KERN_ERR PREFIX "unknown device firmware state " "received from device: "); for (i = 0; i < 8; i++) @@ -390,7 +405,7 @@ return -EIO; } /* do we need fpga loader ezusb firmware? */ - if (buffer[3] == 0x01 && buffer[6] == 0x19) { + if (buffer[3] == 0x01) { ret = usb6fire_fw_ezusb_upload(intf, "6fire/dmx6firel2.ihx", 0, NULL, 0); if (ret < 0) @@ -398,7 +413,10 @@ return FW_NOT_READY; } /* do we need fpga firmware and application ezusb firmware? */ - else if (buffer[3] == 0x02 && buffer[6] == 0x0b) { + else if (buffer[3] == 0x02) { + ret = usb6fire_fw_check(buffer + 4); + if (ret < 0) + return ret; ret = usb6fire_fw_fpga_upload(intf, "6fire/dmx6firecf.bin"); if (ret < 0) return ret; @@ -411,8 +429,8 @@ return FW_NOT_READY; } /* all fw loaded? */ - else if (buffer[3] == 0x03 && buffer[6] == 0x0b) - return 0; + else if (buffer[3] == 0x03) + return usb6fire_fw_check(buffer + 4); /* unknown data? */ else { snd_printk(KERN_ERR PREFIX "unknown device firmware state "