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Date: Fri, 03 Aug 2012 17:16:41 +0200
From: René Bürgel <rene.buergel@...ard.de>
To: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3]: ezusb: remove dependency to usb_serial interface
This patch removes the dependency on the usb_serial interface and names
some magic constants
Signed-off-by: René Bürgel <rene.buergel@...ard.de>
--
diff --git a/drivers/usb/serial/ezusb.c b/drivers/usb/serial/ezusb.c
index 800e8eb..3048b52d 100644
--- a/drivers/usb/serial/ezusb.c
+++ b/drivers/usb/serial/ezusb.c
@@ -9,24 +9,24 @@
*/
#include <linux/kernel.h>
-#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
-#include <linux/tty.h>
#include <linux/module.h>
#include <linux/usb.h>
-#include <linux/usb/serial.h>
/* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
#define CPUCS_REG 0x7F92
-int ezusb_writememory(struct usb_serial *serial, int address,
+/* Command for writing to internal memory */
+#define WRITE_INT_RAM 0xA0
+
+int ezusb_writememory(struct usb_device *dev, int address,
unsigned char *data, int length, __u8 request)
{
int result;
unsigned char *transfer_buffer;
- if (!serial->dev) {
+ if (!dev) {
printk(KERN_ERR "ezusb: %s - no physical device present, "
"failing.\n", __func__);
return -ENODEV;
@@ -34,25 +34,25 @@ int ezusb_writememory(struct usb_serial *serial, int
address,
transfer_buffer = kmemdup(data, length, GFP_KERNEL);
if (!transfer_buffer) {
- dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n",
+ dev_err(&dev->dev, "%s - kmalloc(%d) failed.\n",
__func__, length);
return -ENOMEM;
}
- result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- request, 0x40, address, 0, transfer_buffer, length, 3000);
+ result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ address, 0, transfer_buffer, length, 3000);
+
kfree(transfer_buffer);
return result;
}
EXPORT_SYMBOL_GPL(ezusb_writememory);
-int ezusb_set_reset(struct usb_serial *serial, unsigned char reset_bit)
+int ezusb_set_reset(struct usb_device *dev, unsigned char reset_bit)
{
- int response;
-
- response = ezusb_writememory(serial, CPUCS_REG, &reset_bit, 1, 0xa0);
+ int response = ezusb_writememory(dev, CPUCS_REG, &reset_bit, 1,
WRITE_INT_RAM);
if (response < 0)
- dev_err(&serial->dev->dev, "%s- %d failed\n",
- __func__, reset_bit);
+ dev_err(&dev->dev, "%s-%d failed: %d\n",
+ __func__, reset_bit, response);
return response;
}
EXPORT_SYMBOL_GPL(ezusb_set_reset);
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index af0b70e..f0d4f3f 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -1241,12 +1241,12 @@ static int keyspan_fake_startup(struct
usb_serial *serial)
dbg("Uploading Keyspan %s firmware.", fw_name);
/* download the firmware image */
- response = ezusb_set_reset(serial, 1);
+ response = ezusb_set_reset(serial->dev, 1);
record = (const struct ihex_binrec *)fw->data;
while (record) {
- response = ezusb_writememory(serial, be32_to_cpu(record->addr),
+ response = ezusb_writememory(serial->dev,
be32_to_cpu(record->addr),
(unsigned char *)record->data,
be16_to_cpu(record->len), 0xa0);
if (response < 0) {
@@ -1260,7 +1260,7 @@ static int keyspan_fake_startup(struct usb_serial
*serial)
release_firmware(fw);
/* bring device out of reset. Renumeration will occur in a
moment and the new device will bind to the real driver */
- response = ezusb_set_reset(serial, 0);
+ response = ezusb_set_reset(serial->dev, 0);
/* we don't want this device to have a driver assigned to it. */
return 1;
diff --git a/drivers/usb/serial/keyspan_pda.c
b/drivers/usb/serial/keyspan_pda.c
index a4ac3cf..1290b6f 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -682,7 +682,7 @@ static int keyspan_pda_fake_startup(struct
usb_serial *serial)
const struct firmware *fw;
/* download the firmware here ... */
- response = ezusb_set_reset(serial, 1);
+ response = ezusb_set_reset(serial->dev, 1);
if (0) { ; }
#ifdef KEYSPAN
@@ -707,7 +707,7 @@ static int keyspan_pda_fake_startup(struct
usb_serial *serial)
record = (const struct ihex_binrec *)fw->data;
while (record) {
- response = ezusb_writememory(serial, be32_to_cpu(record->addr),
+ response = ezusb_writememory(serial->dev,
be32_to_cpu(record->addr),
(unsigned char *)record->data,
be16_to_cpu(record->len), 0xa0);
if (response < 0) {
@@ -722,7 +722,7 @@ static int keyspan_pda_fake_startup(struct
usb_serial *serial)
release_firmware(fw);
/* bring device out of reset. Renumeration will occur in a moment
and the new device will bind to the real driver */
- response = ezusb_set_reset(serial, 0);
+ response = ezusb_set_reset(serial->dev, 0);
/* we want this device to fail to have a driver assigned to it. */
return 1;
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index 473635e..fc72591 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -213,13 +213,13 @@ static int whiteheat_firmware_download(struct
usb_serial *serial,
goto out;
}
ret = 0;
- response = ezusb_set_reset (serial, 1);
+ response = ezusb_set_reset(serial->dev, 1);
record = (const struct ihex_binrec *)loader_fw->data;
while (record) {
- response = ezusb_writememory (serial, be32_to_cpu(record->addr),
- (unsigned char *)record->data,
- be16_to_cpu(record->len), 0xa0);
+ 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",
@@ -230,15 +230,15 @@ static int whiteheat_firmware_download(struct
usb_serial *serial,
record = ihex_next_binrec(record);
}
- response = ezusb_set_reset(serial, 0);
+ response = ezusb_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, be32_to_cpu(record->addr),
- (unsigned char *)record->data,
- be16_to_cpu(record->len), 0xa3);
+ 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 "
@@ -250,13 +250,13 @@ static int whiteheat_firmware_download(struct
usb_serial *serial,
++record;
}
- response = ezusb_set_reset(serial, 1);
+ response = ezusb_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, be32_to_cpu(record->addr),
- (unsigned char *)record->data,
- be16_to_cpu(record->len), 0xa0);
+ 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 "
@@ -268,7 +268,7 @@ static int whiteheat_firmware_download(struct
usb_serial *serial,
++record;
}
ret = 0;
- response = ezusb_set_reset (serial, 0);
+ response = ezusb_set_reset(serial->dev, 0);
out:
release_firmware(loader_fw);
release_firmware(firmware_fw);
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 86c0b45..a101507 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -301,9 +301,9 @@ extern void usb_serial_port_softint(struct
usb_serial_port *port);
extern int usb_serial_suspend(struct usb_interface *intf, pm_message_t
message);
extern int usb_serial_resume(struct usb_interface *intf);
-extern int ezusb_writememory(struct usb_serial *serial, int address,
+extern int ezusb_writememory(struct usb_device *dev, int address,
unsigned char *data, int length, __u8 bRequest);
-extern int ezusb_set_reset(struct usb_serial *serial, unsigned char
reset_bit);
+extern int ezusb_set_reset(struct usb_device *dev, unsigned char
reset_bit);
/* USB Serial console functions */
#ifdef CONFIG_USB_SERIAL_CONSOLE
--
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