Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/usb/misc/emi62.c b/drivers/usb/misc/emi62.c
new file mode 100644
index 0000000..189986a
--- /dev/null
+++ b/drivers/usb/misc/emi62.c
@@ -0,0 +1,298 @@
+/*
+ * Emagic EMI 2|6 usb audio interface firmware loader.
+ * Copyright (C) 2002
+ * Tapio Laxström (tapio.laxstrom@iptime.fi)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, as published by
+ * the Free Software Foundation, version 2.
+ *
+ * $Id: emi62.c,v 1.15 2002/04/23 06:13:59 tapio Exp $
+ */
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#define MAX_INTEL_HEX_RECORD_LENGTH 16
+typedef struct _INTEL_HEX_RECORD
+{
+ __u32 length;
+ __u32 address;
+ __u32 type;
+ __u8 data[MAX_INTEL_HEX_RECORD_LENGTH];
+} INTEL_HEX_RECORD, *PINTEL_HEX_RECORD;
+
+/* include firmware (variables)*/
+
+/* FIXME: This is quick and dirty solution! */
+#define SPDIF /* if you want SPDIF comment next line */
+//#undef SPDIF /* if you want MIDI uncomment this line */
+
+#ifdef SPDIF
+# include "emi62_fw_s.h" /* spdif fw */
+#else
+# include "emi62_fw_m.h" /* midi fw */
+#endif
+
+#define EMI62_VENDOR_ID 0x086a /* Emagic Soft-und Hardware GmBH */
+#define EMI62_PRODUCT_ID 0x0110 /* EMI 6|2m without firmware */
+
+#define ANCHOR_LOAD_INTERNAL 0xA0 /* Vendor specific request code for Anchor Upload/Download (This one is implemented in the core) */
+#define ANCHOR_LOAD_EXTERNAL 0xA3 /* This command is not implemented in the core. Requires firmware */
+#define ANCHOR_LOAD_FPGA 0xA5 /* This command is not implemented in the core. Requires firmware. Emagic extension */
+#define MAX_INTERNAL_ADDRESS 0x1B3F /* This is the highest internal RAM address for the AN2131Q */
+#define CPUCS_REG 0x7F92 /* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
+#define INTERNAL_RAM(address) (address <= MAX_INTERNAL_ADDRESS)
+
+static int emi62_writememory( struct usb_device *dev, int address, unsigned char *data, int length, __u8 bRequest);
+static int emi62_set_reset(struct usb_device *dev, unsigned char reset_bit);
+static int emi62_load_firmware (struct usb_device *dev);
+static int emi62_probe(struct usb_interface *intf, const struct usb_device_id *id);
+static void emi62_disconnect(struct usb_interface *intf);
+static int __init emi62_init (void);
+static void __exit emi62_exit (void);
+
+
+/* thanks to drivers/usb/serial/keyspan_pda.c code */
+static int emi62_writememory (struct usb_device *dev, int address, unsigned char *data, int length, __u8 request)
+{
+ int result;
+ unsigned char *buffer = kmalloc (length, GFP_KERNEL);
+
+ if (!buffer) {
+ err("emi62: kmalloc(%d) failed.", length);
+ return -ENOMEM;
+ }
+ memcpy (buffer, data, length);
+ /* Note: usb_control_msg returns negative value on error or length of the
+ * data that was written! */
+ result = usb_control_msg (dev, usb_sndctrlpipe(dev, 0), request, 0x40, address, 0, buffer, length, 300);
+ kfree (buffer);
+ return result;
+}
+
+/* thanks to drivers/usb/serial/keyspan_pda.c code */
+static int emi62_set_reset (struct usb_device *dev, unsigned char reset_bit)
+{
+ int response;
+ info("%s - %d", __FUNCTION__, reset_bit);
+
+ response = emi62_writememory (dev, CPUCS_REG, &reset_bit, 1, 0xa0);
+ if (response < 0) {
+ err("emi62: set_reset (%d) failed", reset_bit);
+ }
+ return response;
+}
+
+#define FW_LOAD_SIZE 1023
+
+static int emi62_load_firmware (struct usb_device *dev)
+{
+ int err;
+ int i;
+ int pos = 0; /* Position in hex record */
+ __u32 addr; /* Address to write */
+ __u8 *buf;
+
+ dev_dbg(&dev->dev, "load_firmware\n");
+ buf = kmalloc(FW_LOAD_SIZE, GFP_KERNEL);
+ if (!buf) {
+ err( "%s - error loading firmware: error = %d", __FUNCTION__, -ENOMEM);
+ err = -ENOMEM;
+ goto wraperr;
+ }
+
+ /* Assert reset (stop the CPU in the EMI) */
+ err = emi62_set_reset(dev,1);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ goto wraperr;
+ }
+
+ /* 1. We need to put the loader for the FPGA into the EZ-USB */
+ for (i=0; g_emi62_loader[i].type == 0; i++) {
+ err = emi62_writememory(dev, g_emi62_loader[i].address, g_emi62_loader[i].data, g_emi62_loader[i].length, ANCHOR_LOAD_INTERNAL);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ goto wraperr;
+ }
+ }
+
+ /* De-assert reset (let the CPU run) */
+ err = emi62_set_reset(dev,0);
+
+ /* 2. We upload the FPGA firmware into the EMI
+ * Note: collect up to 1023 (yes!) bytes and send them with
+ * a single request. This is _much_ faster! */
+ do {
+ i = 0;
+ addr = g_emi62bs[pos].address;
+
+ /* intel hex records are terminated with type 0 element */
+ while ((g_emi62bs[pos].type == 0) && (i + g_emi62bs[pos].length < FW_LOAD_SIZE)) {
+ memcpy(buf + i, g_emi62bs[pos].data, g_emi62bs[pos].length);
+ i += g_emi62bs[pos].length;
+ pos++;
+ }
+ err = emi62_writememory(dev, addr, buf, i, ANCHOR_LOAD_FPGA);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ goto wraperr;
+ }
+ } while (i > 0);
+
+ /* Assert reset (stop the CPU in the EMI) */
+ err = emi62_set_reset(dev,1);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ goto wraperr;
+ }
+
+ /* 3. We need to put the loader for the firmware into the EZ-USB (again...) */
+ for (i=0; g_emi62_loader[i].type == 0; i++) {
+ err = emi62_writememory(dev, g_emi62_loader[i].address, g_emi62_loader[i].data, g_emi62_loader[i].length, ANCHOR_LOAD_INTERNAL);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ goto wraperr;
+ }
+ }
+
+ /* De-assert reset (let the CPU run) */
+ err = emi62_set_reset(dev,0);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ goto wraperr;
+ }
+
+ /* 4. We put the part of the firmware that lies in the external RAM into the EZ-USB */
+
+/* FIXME: quick and dirty ifdefs */
+#ifdef SPDIF
+ for (i=0; g_HexSpdifFw62[i].type == 0; i++) {
+ if (!INTERNAL_RAM(g_HexSpdifFw62[i].address)) {
+ err = emi62_writememory(dev, g_HexSpdifFw62[i].address, g_HexSpdifFw62[i].data, g_HexSpdifFw62[i].length, ANCHOR_LOAD_EXTERNAL);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ goto wraperr;
+ }
+ }
+ }
+#else /* MIDI */
+ for (i=0; g_HexMidiFw62[i].type == 0; i++) {
+ if (!INTERNAL_RAM(g_HexMidiFw62[i].address)) {
+ err = emi62_writememory(dev, g_HexMidiFw62[i].address, g_HexMidiFw62[i].data, g_HexMidiFw62[i].length, ANCHOR_LOAD_EXTERNAL);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d\n", __FUNCTION__, err);
+ goto wraperr;
+ return err;
+ }
+ }
+ }
+#endif
+ /* Assert reset (stop the CPU in the EMI) */
+ err = emi62_set_reset(dev,1);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ goto wraperr;
+ }
+
+/* FIXME: quick and dirty ifdefs */
+#ifdef SPDIF
+ for (i=0; g_HexSpdifFw62[i].type == 0; i++) {
+ if (INTERNAL_RAM(g_HexSpdifFw62[i].address)) {
+ err = emi62_writememory(dev, g_HexSpdifFw62[i].address, g_HexSpdifFw62[i].data, g_HexSpdifFw62[i].length, ANCHOR_LOAD_INTERNAL);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ goto wraperr;
+ }
+ }
+ }
+#else /* MIDI */
+ for (i=0; g_HexMidiFw62[i].type == 0; i++) {
+ if (INTERNAL_RAM(g_HexMidiFw62[i].address)) {
+ err = emi62_writememory(dev, g_HexMidiFw62[i].address, g_HexMidiFw62[i].data, g_HexMidiFw62[i].length, ANCHOR_LOAD_INTERNAL);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d\n", __FUNCTION__, err);
+ goto wraperr;
+ }
+ }
+ }
+#endif
+
+ /* De-assert reset (let the CPU run) */
+ err = emi62_set_reset(dev,0);
+ if (err < 0) {
+ err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ goto wraperr;
+ }
+
+ kfree(buf);
+
+ /* return 1 to fail the driver inialization
+ * and give real driver change to load */
+ return 1;
+
+wraperr:
+ kfree(buf);
+ dev_err(&dev->dev, "Error\n");
+ return err;
+}
+
+static __devinitdata struct usb_device_id id_table [] = {
+ { USB_DEVICE(EMI62_VENDOR_ID, EMI62_PRODUCT_ID) },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, id_table);
+
+static int emi62_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev(intf);
+ dev_dbg(&intf->dev, "emi62_probe\n");
+
+ info("%s start", __FUNCTION__);
+
+ emi62_load_firmware(dev);
+
+ /* do not return the driver context, let real audio driver do that */
+ return -EIO;
+}
+
+static void emi62_disconnect(struct usb_interface *intf)
+{
+}
+
+static struct usb_driver emi62_driver = {
+ .owner = THIS_MODULE,
+ .name = "emi62 - firmware loader",
+ .probe = emi62_probe,
+ .disconnect = emi62_disconnect,
+ .id_table = id_table,
+};
+
+static int __init emi62_init (void)
+{
+ int retval;
+ retval = usb_register (&emi62_driver);
+ if (retval)
+ printk(KERN_ERR "adi-emi: registration failed\n");
+ return retval;
+}
+
+static void __exit emi62_exit (void)
+{
+ usb_deregister (&emi62_driver);
+}
+
+module_init(emi62_init);
+module_exit(emi62_exit);
+
+MODULE_AUTHOR("tapio laxström");
+MODULE_DESCRIPTION("Emagic EMI 6|2m firmware loader.");
+MODULE_LICENSE("GPL");
+
+/* vi:ai:syntax=c:sw=8:ts=8:tw=80
+ */