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Date: Tue, 18 Sep 2012 09:00:41 +0200 (CEST)
From: Rene Buergel <rene.buergel@...ard.de>
To: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/3]: ezusb: add support for Cypress FX2LP
This Patch adds support for the newer Cypress FX2LP. It also adapts
three drivers currently using ezusb to the interface change. (whiteheat
and keyspan[_pda])
Signed-off-by: René Bürgel <rene.buergel@...ard.de>
---
diff --git a/drivers/usb/serial/ezusb.c b/drivers/usb/serial/ezusb.c
index 3048b52d..351988d 100644
--- a/drivers/usb/serial/ezusb.c
+++ b/drivers/usb/serial/ezusb.c
@@ -14,11 +14,25 @@
#include <linux/module.h>
#include <linux/usb.h>
-/* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
-#define CPUCS_REG 0x7F92
+struct ezusb_fx_type {
+ /* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
+ unsigned short cpucs_reg;
+ unsigned short max_internal_adress;
+};
-/* Command for writing to internal memory */
+struct ezusb_fx_type ezusb_fx1 = {
+ .cpucs_reg = 0x7F92,
+ .max_internal_adress = 0x1B3F,
+};
+
+struct ezusb_fx_type ezusb_fx2 = {
+ .cpucs_reg = 0xE600,
+ .max_internal_adress = 0x3FFF,
+};
+
+/* Commands for writing to memory */
#define WRITE_INT_RAM 0xA0
+#define WRITE_EXT_RAM 0xA3
int ezusb_writememory(struct usb_device *dev, int address,
unsigned char *data, int length, __u8 request)
@@ -47,13 +61,24 @@ int ezusb_writememory(struct usb_device *dev, int address,
}
EXPORT_SYMBOL_GPL(ezusb_writememory);
-int ezusb_set_reset(struct usb_device *dev, unsigned char reset_bit)
+int ezusb_set_reset(struct usb_device *dev, unsigned short cpucs_reg,
+ unsigned char reset_bit)
{
- int response = ezusb_writememory(dev, CPUCS_REG, &reset_bit, 1, WRITE_INT_RAM);
+ int response = ezusb_writememory(dev, cpucs_reg, &reset_bit, 1, WRITE_INT_RAM);
if (response < 0)
dev_err(&dev->dev, "%s-%d failed: %d\n",
__func__, reset_bit, response);
return response;
}
-EXPORT_SYMBOL_GPL(ezusb_set_reset);
+int ezusb_fx1_set_reset(struct usb_device *dev, unsigned char reset_bit)
+{
+ return ezusb_set_reset(dev, ezusb_fx1.cpucs_reg, reset_bit);
+}
+EXPORT_SYMBOL_GPL(ezusb_fx1_set_reset);
+
+int ezusb_fx2_set_reset(struct usb_device *dev, unsigned char reset_bit)
+{
+ return ezusb_set_reset(dev, ezusb_fx2.cpucs_reg, reset_bit);
+}
+EXPORT_SYMBOL_GPL(ezusb_fx2_set_reset);
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index cf17f3a..f38fc98 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -43,6 +43,7 @@
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
+#include <linux/usb/ezusb.h>
#include "keyspan.h"
static bool debug;
@@ -1247,7 +1248,7 @@ static int keyspan_fake_startup(struct usb_serial *serial)
dev_dbg(&serial->dev->dev, "Uploading Keyspan %s firmware.\n", fw_name);
/* download the firmware image */
- response = ezusb_set_reset(serial->dev, 1);
+ response = ezusb_fx1_set_reset(serial->dev, 1);
record = (const struct ihex_binrec *)fw->data;
@@ -1266,7 +1267,7 @@ 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->dev, 0);
+ response = ezusb_fx1_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 8cefb67..dda424e 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -30,6 +30,7 @@
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
+#include <linux/usb/ezusb.h>
/* make a simple define to handle if we are compiling keyspan_pda or xircom support */
#if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE)
@@ -678,7 +679,7 @@ static int keyspan_pda_fake_startup(struct usb_serial *serial)
const struct firmware *fw;
/* download the firmware here ... */
- response = ezusb_set_reset(serial->dev, 1);
+ response = ezusb_fx1_set_reset(serial->dev, 1);
if (0) { ; }
#ifdef KEYSPAN
@@ -718,7 +719,7 @@ 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->dev, 0);
+ response = ezusb_fx1_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 dd9de0e..b49af0b 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -32,6 +32,7 @@
#include <linux/serial_reg.h>
#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 */
@@ -213,7 +214,7 @@ static int whiteheat_firmware_download(struct usb_serial *serial,
goto out;
}
ret = 0;
- response = ezusb_set_reset(serial->dev, 1);
+ response = ezusb_fx1_set_reset(serial->dev, 1);
record = (const struct ihex_binrec *)loader_fw->data;
while (record) {
@@ -230,7 +231,7 @@ static int whiteheat_firmware_download(struct usb_serial *serial,
record = ihex_next_binrec(record);
}
- response = ezusb_set_reset(serial->dev, 0);
+ response = ezusb_fx1_set_reset(serial->dev, 0);
record = (const struct ihex_binrec *)firmware_fw->data;
while (record && be32_to_cpu(record->addr) < 0x1b40)
@@ -250,7 +251,7 @@ static int whiteheat_firmware_download(struct usb_serial *serial,
++record;
}
- response = ezusb_set_reset(serial->dev, 1);
+ response = ezusb_fx1_set_reset(serial->dev, 1);
record = (const struct ihex_binrec *)firmware_fw->data;
while (record && be32_to_cpu(record->addr) < 0x1b40) {
@@ -268,7 +269,7 @@ static int whiteheat_firmware_download(struct usb_serial *serial,
++record;
}
ret = 0;
- response = ezusb_set_reset(serial->dev, 0);
+ response = ezusb_fx1_set_reset(serial->dev, 0);
out:
release_firmware(loader_fw);
release_firmware(firmware_fw);
diff --git a/include/linux/usb/ezusb.h b/include/linux/usb/ezusb.h
new file mode 100644
index 0000000..fc618d8
--- /dev/null
+++ b/include/linux/usb/ezusb.h
@@ -0,0 +1,16 @@
+#ifndef __EZUSB_H
+#define __EZUSB_H
+
+
+extern int ezusb_writememory(struct usb_device *dev, int address,
+ unsigned char *data, int length, __u8 bRequest);
+
+extern int ezusb_fx1_set_reset(struct usb_device *dev, unsigned char reset_bit);
+extern int ezusb_fx2_set_reset(struct usb_device *dev, unsigned char reset_bit);
+
+extern int ezusb_fx1_ihex_firmware_download(struct usb_device *dev,
+ const char *firmware_path);
+extern int ezusb_fx2_ihex_firmware_download(struct usb_device *dev,
+ const char *firmware_path);
+
+#endif /* __EZUSB_H */
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 6bed6db..ec11a56 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -301,10 +301,6 @@ 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_device *dev, int address,
- unsigned char *data, int length, __u8 bRequest);
-extern int ezusb_set_reset(struct usb_device *dev, unsigned char reset_bit);
-
/* USB Serial console functions */
#ifdef CONFIG_USB_SERIAL_CONSOLE
extern void usb_serial_console_init(int debug, int minor);
--
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