USB: ezusb: add functions for firmware download

This patch adds new functions to upload firmware to the controller. The
drivers currently using ezusb are adapted to use these new functions.

This also fixes a bug occuring during firmware loading in the
whiteheat-driver:
The driver iterates over an ihex-formatted firmware using ++ on a "const
struct ihex_binrec*" which leads to faulty results, because ihex data is
read as length. The function "ihex_next_binrec(record)" has so be used
to work correctly

Signed-off-by: René Bürgel <rene.buergel@sohard.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 7 insertions, 78 deletions

diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index 8172ea3aead0..efa32bf5f758 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -33,8 +33,6 @@
 #include <linux/serial.h>
 #include <linux/usb/serial.h>
 #include <linux/usb/ezusb.h>
-#include <linux/firmware.h>
-#include <linux/ihex.h>
 #include "whiteheat.h"			/* WhiteHEAT specific commands */
 
 #ifndef CMSPAR
@@ -194,84 +192,15 @@ static int firm_report_tx_done(struct usb_serial_port *port);
 static int whiteheat_firmware_download(struct usb_serial *serial,
 					const struct usb_device_id *id)
 {
-	int response, ret = -ENOENT;
-	const struct firmware *loader_fw = NULL, *firmware_fw = NULL;
-	const struct ihex_binrec *record;
+	int response;
 
-	if (request_ihex_firmware(&firmware_fw, "whiteheat.fw",
-				  &serial->dev->dev)) {
-		dev_err(&serial->dev->dev,
-			"%s - request \"whiteheat.fw\" failed\n", __func__);
-		goto out;
-	}
-	if (request_ihex_firmware(&loader_fw, "whiteheat_loader.fw",
-			     &serial->dev->dev)) {
-		dev_err(&serial->dev->dev,
-			"%s - request \"whiteheat_loader.fw\" failed\n",
-			__func__);
-		goto out;
-	}
-	ret = 0;
-	response = ezusb_fx1_set_reset(serial->dev, 1);
-
-	record = (const struct ihex_binrec *)loader_fw->data;
-	while (record) {
-		response = ezusb_writememory(serial->dev, be32_to_cpu(record->addr),
-					     (unsigned char *)record->data,
-					     be16_to_cpu(record->len), 0xa0);
-		if (response < 0) {
-			dev_err(&serial->dev->dev, "%s - ezusb_writememory "
-				"failed for loader (%d %04X %p %d)\n",
-				__func__, response, be32_to_cpu(record->addr),
-				record->data, be16_to_cpu(record->len));
-			break;
-		}
-		record = ihex_next_binrec(record);
-	}
-
-	response = ezusb_fx1_set_reset(serial->dev, 0);
-
-	record = (const struct ihex_binrec *)firmware_fw->data;
-	while (record && be32_to_cpu(record->addr) < 0x1b40)
-		record = ihex_next_binrec(record);
-	while (record) {
-		response = ezusb_writememory(serial->dev, be32_to_cpu(record->addr),
-					     (unsigned char *)record->data,
-					     be16_to_cpu(record->len), 0xa3);
-		if (response < 0) {
-			dev_err(&serial->dev->dev, "%s - ezusb_writememory "
-				"failed for first firmware step "
-				"(%d %04X %p %d)\n", __func__, response,
-				be32_to_cpu(record->addr), record->data,
-				be16_to_cpu(record->len));
-			break;
-		}
-		++record;
-	}
-
-	response = ezusb_fx1_set_reset(serial->dev, 1);
-
-	record = (const struct ihex_binrec *)firmware_fw->data;
-	while (record && be32_to_cpu(record->addr) < 0x1b40) {
-		response = ezusb_writememory(serial->dev, be32_to_cpu(record->addr),
-					     (unsigned char *)record->data,
-					     be16_to_cpu(record->len), 0xa0);
-		if (response < 0) {
-			dev_err(&serial->dev->dev, "%s - ezusb_writememory "
-				"failed for second firmware step "
-				"(%d %04X %p %d)\n", __func__, response,
-				be32_to_cpu(record->addr), record->data,
-				be16_to_cpu(record->len));
-			break;
-		}
-		++record;
+	response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat_loader.fw");
+	if (response >= 0) {
+		response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat.fw");
+		if (response >= 0)
+			return 0;
 	}
-	ret = 0;
-	response = ezusb_fx1_set_reset(serial->dev, 0);
- out:
-	release_firmware(loader_fw);
-	release_firmware(firmware_fw);
-	return ret;
+	return -ENOENT;
 }