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最近在做fl2440网卡使用3G模块实现AP和STA模式上网。在此之前，必须添加USB驱动
1，修改linux内核的menuconfig
Device Drivers --->
Generic Driver Options --->
(/sbin/hotplug) path to uevent helper
[*] Block devices --->
<*> Low Performance USB Block driver
SCSI device support --->
<*> SCSI device support
[*] legacy /proc/scsi/ support
<*> SCSI disk support
<*> SCSI generic support
[*] Probe all LUNs on each SCSI device
[*] USB support --->
<*> Support for Host-side USB
[*] USB device filesystem (DEPRECATED)
[*] USB device class-devices (DEPRECATED)
<*> USB Monitor
<*> OHCI HCD support
<*> USB Mass Storage support
[*] HID Devices --->
<*> USB Human Interface Device (full HID) support
[*] /dev/hiddev raw HID device support
File systems --->
DOS/FAT/NT Filesystems --->
<*> MSDOS fs support
<*> VFAT (Windows-95) fs support
(437) Default codepage for FAT
(iso8859-1) Default iocharset for FAT
<*> NTFS file system support
[*] NTFS debugging support
[*] NTFS write support
2，修改内核源码
zhanghang@ubuntu:~/fl2440/linux/linux-3.0$ vim drivers/usb/serial/option.c
修改如下：
以下为我做的一个补丁文件：
vim option.patch
--- option.c 2019-05-03 01:17:06.087400313 -0700
+++ option_s.c 2019-05-01 23:31:19.000000000 -0700
@@ -49,6 +49,11 @@
const struct usb_device_id *id);
static int option_send_setup(struct usb_serial_port *port);
static void option_instat_callback(struct urb *urb);
+/*add for USB*/
+static int vendor=0;
+static int product=0;
+#define OPTION_VENDOR_RESERVED 0xFFFF
+#define OPTION_RESERVED_DEVICE 0xFFFF
/* Vendor and product IDs */
#define OPTION_VENDOR_ID 0x0AF0
#define OPTION_PRODUCT_COLT 0x5000
@@ -444,8 +449,9 @@
.ifaceinfo = zte_k3765_z_no_sendsetup,
.reason = OPTION_BLACKLIST_SENDSETUP
};
-
-static const struct usb_device_id option_ids[] = {
+/*delete const of this struct*/
+static struct usb_device_id option_ids[] = {
+ { USB_DEVICE(OPTION_VENDOR_RESERVED,OPTION_RESERVED_DEVICE) },//add for USB
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
@@ -1077,6 +1083,13 @@
/* Functions used by new usb-serial code. */
static int __init option_init(void)
{
+ if ((vendor>0) && (product>0))
+ {
+ option_ids[0].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
+ option_ids[0].idVendor = vendor;
+ option_ids[0].idProduct = product;
+ printk("Register option drvier for modem vendor=0x%04x product=0x%04x\n", vendor, product);
+ }//add for USB
int retval;
retval = usb_serial_register(&option_1port_device);
if (retval)
vim arch/arm/mach-s3c2440/mach-smdk2440.c
vim mach-smdk2440.patch
--- mach-smdk2440.c 2019-05-03 01:29:10.771422429 -0700
+++ ./fl2440/linux/linux-3.0/arch/arm/mach-s3c2440/mach-smdk2440.c 2019-05-03 01:34:15.003431713 -0700
@@ -23,6 +23,11 @@
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/dm9000.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
@@ -44,6 +49,11 @@
#include <plat/clock.h>
#include <plat/devs.h>
#include <plat/cpu.h>
+#include <plat/ts.h>
+#include <mach/regs-clock.h>
+#include <linux/i2c.h>
+#include <linux/i2c/at24.h>
+#include <linux/delay.h>
#include <plat/common-smdk.h>
#define DM9000_BASE (S3C2410_CS4 + 0x300)
@@ -187,12 +197,23 @@
&s3c_device_iis,
&s3c_device_dm9000,
};
-
+int usb_s3c2440_init(void)
+{
+ /* Input Frequency is 12.0000MHz, and MDEV=0x38 PDIV=2 SDIV=2, so output frequency 48.00MHz */
+ unsigned long upllvalue = (0x38<<12)|(0x02<<4)|(0x02);
+ while (upllvalue != __raw_readl(S3C2410_UPLLCON))
+ {
+ __raw_writel(upllvalue, S3C2410_UPLLCON);
+ mdelay(1);
+ }
+ return 0;
+}
static void __init smdk2440_map_io(void)
{
s3c24xx_init_io(smdk2440_iodesc, ARRAY_SIZE(smdk2440_iodesc));
s3c24xx_init_clocks(12000000);
s3c24xx_init_uarts(smdk2440_uartcfgs, ARRAY_SIZE(smdk2440_uartcfgs));
+ usb_s3c2440_init();
}
static void __init smdk2440_machine_init(void)
再次编译内核生成.bin文件移植到开发板：
显示：
...
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usbcore: registered new interface driver libusual
usbcore: registered new interface driver usbserial
USB Serial support registered for generic
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial Driver core
USB Serial support registered for FTDI USB Serial Device
usbcore: registered new interface driver ftdi_sio
ftdi_sio: v1.6.0:USB FTDI Serial Converters Driver
USB Serial support registered for pl2303
usbcore: registered new interface driver pl2303
pl2303: Prolific PL2303 USB to serial adaptor driver
mousedev: PS/2 mouse device common for all mice
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics
s3c2410-wdt s3c2410-wdt: watchdog inactive, reset disabled, irq enabled
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
ALSA device list:
No soundcards found.
TCP cubic registered
NET: Registered protocol family 17
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
usb 1-1: new full speed USB device number 2 using s3c2410-ohci
...
此时插入U盘，将会有提示:
~ >: usb 1-1.1: new full speed USB device number 3 using s3c2410-ohci
...
拔出U盘：
~ >: usb 1-1.1: USB disconnect, device number 3