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USB: ezusb: add support for Cypress FX2LP

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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@sohard.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rene Buergel 2012-09-18 09:00:41 +02:00 • committed by Greg Kroah-Hartman
commit cc183e2a5e
6 changed files with 58 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

35
drivers/usb/serial/ezusb.c
View file

@ -14,11 +14,25 @@
#include <linux/module.h>
#include <linux/usb.h>
struct ezusb_fx_type {
/* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
#define CPUCS_REG 0x7F92
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)
@ -44,13 +58,24 @@ 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);

5
drivers/usb/serial/keyspan.c
View file

@ -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"
/*
@ -1245,7 +1246,7 @@ 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;
@ -1264,7 +1265,7 @@ 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;

5
drivers/usb/serial/keyspan_pda.c
View file

@ -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;

9
drivers/usb/serial/whiteheat.c
View file

@ -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 */
@ -211,7 +212,7 @@ 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) {
@ -228,7 +229,7 @@ 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)
@ -248,7 +249,7 @@ 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) {
@ -266,7 +267,7 @@ 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);

16
include/linux/usb/ezusb.h Normal file
View file

@ -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 */

4
include/linux/usb/serial.h
View file

@ -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 minor);