--- /dev/null
+/*
+ * Silicon Laboratories CP2101/CP2102/CP2103 USB to RS232 serial adaptor driver
+ *
+ * Copyright (C) 2005 Craig Shelley (craig@microtron.org.uk)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * Support to set flow control line levels using TIOCMGET and TIOCMSET
+ * thanks to Karl Hiramoto karl@hiramoto.org. RTSCTS hardware flow
+ * control thanks to Munir Nassar nassarmu@real-time.com
+ *
+ * Port configuration, usb descriptor and gpio management by R. Steve McKown
+ * (smckown@titaniummirror.com).
+ *
+ * Outstanding Issues:
+ * Buffers are not flushed when the port is opened.
+ * Multiple calls to write() may fail with "Resource temporarily unavailable"
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/version.h>
+#include <asm/uaccess.h>
+#include <linux/byteorder/generic.h>
+
+#ifndef KERNEL_VERSION
+#define KERNEL_VERSION(a,b,c) ((a)*65536 + (b)*256 + (c))
+#endif
+
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0)
+#ifdef LINUX26
+#undef LINUX26
+#endif
+#define LINUX26
+#endif
+
+#ifdef LINUX26
+
+#include <linux/moduleparam.h>
+#include <linux/usb/serial.h>
+#define DEV_ERR(dev,format,arg...) dev_err(dev,format, ## arg)
+#define USB_KILL_URB usb_kill_urb
+
+#else /* !LINUX26 */
+
+#include <linux/config.h>
+#include "usb-serial.h"
+
+#ifdef CONFIG_USB_SERIAL_DEBUG
+ static int debug = 1;
+#else
+ static int debug;
+#endif
+
+#define DEV_ERR(dev,format,arg...) err(format, ## arg)
+#define USB_KILL_URB usb_unlink_urb
+
+#endif /* LINUX26 */
+
+/*
+ * Version Information
+ * RJM: updated to 0.11 for 2.6.15 and later kernels
+ */
+#define DRIVER_VERSION "v0.11rsm"
+#define DRIVER_DESC "Silicon Labs CP2101/CP2102/CP2103 RS232 serial adaptor driver"
+
+/*
+ * Function Prototypes
+ */
+static int cp2101_open(struct usb_serial_port*, struct file*);
+static void cp2101_cleanup(struct usb_serial_port*);
+static void cp2101_close(struct usb_serial_port*, struct file*);
+static void cp2101_get_termios(struct usb_serial_port*);
+static void cp2101_set_termios(struct usb_serial_port*, struct termios*);
+static void cp2101_break_ctl(struct usb_serial_port*, int);
+static int cp2101_startup (struct usb_serial *);
+static void cp2101_shutdown(struct usb_serial*);
+static int cp2101_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
+static int cp2101_tiocmget (struct usb_serial_port *, struct file *);
+static int cp2101_tiocmset (struct usb_serial_port *, struct file *, unsigned int, unsigned int);
+
+static int debug;
+
+static struct usb_device_id id_table [] = {
+ { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */
+ { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */
+ { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */
+ { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */
+ { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */
+ { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */
+ { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */
+ { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */
+ { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */
+ { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */
+ { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */
+ { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */
+ { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */
+ { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */
+ { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */
+ { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */
+ { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */
+ { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */
+ { } /* Terminating Entry */
+};
+
+MODULE_DEVICE_TABLE (usb, id_table);
+
+#ifdef LINUX26
+static struct usb_driver cp2101_driver = {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
+ .owner = THIS_MODULE,
+#endif
+ .name = "CP2101",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .id_table = id_table,
+};
+#define USB_SUBMIT_URB_ATOMIC(_x_) usb_submit_urb(_x_ , GFP_ATOMIC)
+#define USB_SUBMIT_URB_KERNEL(_x_) usb_submit_urb(_x_ , GFP_KERNEL)
+
+#else /* LINUX26 */
+
+#define USB_SUBMIT_URB_ATOMIC(_x_) usb_submit_urb(_x_)
+#define USB_SUBMIT_URB_KERNEL(_x_) usb_submit_urb(_x_)
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
+static struct usb_serial_driver cp2101_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "cp2101",
+ },
+#else
+static struct usb_serial_device_type cp2101_device = {
+ .owner = THIS_MODULE,
+ .name = "CP2101/CP2102/CP2103 USB to UART Bridge",
+#endif
+ .id_table = id_table,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
+ .num_interrupt_in = 0,
+ .num_bulk_in = 0,
+ .num_bulk_out = 0,
+#else
+ .num_interrupt_in = NUM_DONT_CARE,
+ .num_bulk_in = NUM_DONT_CARE,
+ .num_bulk_out = NUM_DONT_CARE,
+#endif
+ .num_ports = 1,
+ .open = cp2101_open,
+ .close = cp2101_close,
+ .ioctl = cp2101_ioctl, /* GLA, Added backport */
+ .break_ctl = cp2101_break_ctl,
+ .set_termios = cp2101_set_termios,
+#ifdef LINUX26
+ .tiocmget = cp2101_tiocmget,
+ .tiocmset = cp2101_tiocmset,
+ .attach = cp2101_startup,
+#else
+ .startup = cp2101_startup,
+#endif
+ .shutdown = cp2101_shutdown
+};
+
+/* Config request types */
+#define REQTYPE_HOST_TO_DEVICE 0x41
+#define REQTYPE_DEVICE_TO_HOST 0xc1
+
+/* Config SET requests. To GET, add 1 to the request number */
+#define CP2101_UART 0x00 /* Enable / Disable */
+#define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */
+#define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */
+#define CP2101_BREAK 0x05 /* On / Off */
+#define CP2101_CONTROL 0x07 /* Flow control line states */
+#define CP2101_MODEMCTL 0x13 /* Modem controls */
+#define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */
+
+/* CP2101_UART */
+#define UART_ENABLE 0x0001
+#define UART_DISABLE 0x0000
+
+/* CP2101_BAUDRATE */
+#define BAUD_RATE_GEN_FREQ 0x384000
+
+/* CP2101_BITS */
+#define BITS_DATA_MASK 0x0f00
+#define BITS_DATA_5 0x0500
+#define BITS_DATA_6 0x0600
+#define BITS_DATA_7 0x0700
+#define BITS_DATA_8 0x0800
+#define BITS_DATA_9 0x0900
+
+#define BITS_PARITY_MASK 0x00f0
+#define BITS_PARITY_NONE 0x0000
+#define BITS_PARITY_ODD 0x0010
+#define BITS_PARITY_EVEN 0x0020
+#define BITS_PARITY_MARK 0x0030
+#define BITS_PARITY_SPACE 0x0040
+
+#define BITS_STOP_MASK 0x000f
+#define BITS_STOP_1 0x0000
+#define BITS_STOP_1_5 0x0001
+#define BITS_STOP_2 0x0002
+
+/* CP2101_BREAK */
+#define BREAK_ON 0x0000
+#define BREAK_OFF 0x0001
+
+/* CP2101_CONTROL */
+#define CONTROL_DTR 0x0001
+#define CONTROL_RTS 0x0002
+#define CONTROL_CTS 0x0010
+#define CONTROL_DSR 0x0020
+#define CONTROL_RING 0x0040
+#define CONTROL_DCD 0x0080
+#define CONTROL_WRITE_DTR 0x0100
+#define CONTROL_WRITE_RTS 0x0200
+
+/* CP2103 ioctls */
+#define IOCTL_GPIOGET 0x8000 /* Get gpio bits */
+#define IOCTL_GPIOSET 0x8001 /* Set gpio bits */
+#define IOCTL_GPIOBIC 0x8002 /* Clear specific gpio bit(s) */
+#define IOCTL_GPIOBIS 0x8003 /* Set specific gpio bit(s) */
+
+/* CP210x ioctls principally used during initial device configuration */
+#define IOCTL_DEVICERESET 0x8004 /* Reset the cp210x */
+#define IOCTL_PORTCONFGET 0x8005 /* Get port configuration */
+#define IOCTL_PORTCONFSET 0x8006 /* Set port configuration */
+#define IOCTL_SETVID 0x8007 /* Set vendor id */
+#define IOCTL_SETPID 0x8008 /* Set product id */
+#define IOCTL_SETMFG 0x8009 /* Set manufacturer string */
+#define IOCTL_SETPRODUCT 0x800a /* Set product string */
+#define IOCTL_SETSERIAL 0x800b /* Set serial number string */
+#define IOCTL_SETDEVVER 0x800c /* set device version id */
+/* FIXME: where is IOCTL_SETMFG? */
+
+/* CP2103 GPIO */
+#define GPIO_0 0x01
+#define GPIO_1 0x02
+#define GPIO_2 0x04
+#define GPIO_3 0x08
+#define GPIO_MASK (GPIO_0|GPIO_1|GPIO_2|GPIO_3)
+
+/* GetDeviceVersion() return codes */
+#define CP210x_CP2101_VERSION 0x01
+#define CP210x_CP2102_VERSION 0x02
+#define CP210x_CP2103_VERSION 0x03
+
+/* Return codes */
+#define CP210x_SUCCESS 0x00
+#define CP210x_DEVICE_NOT_FOUND 0xFF
+#define CP210x_INVALID_HANDLE 0x01
+#define CP210x_INVALID_PARAMETER 0x02
+#define CP210x_DEVICE_IO_FAILED 0x03
+#define CP210x_FUNCTION_NOT_SUPPORTED 0x04
+#define CP210x_GLOBAL_DATA_ERROR 0x05
+#define CP210x_FILE_ERROR 0x06
+#define CP210x_COMMAND_FAILED 0x08
+#define CP210x_INVALID_ACCESS_TYPE 0x09
+
+/* USB descriptor sizes */
+#define CP210x_MAX_DEVICE_STRLEN 256
+#define CP210x_MAX_PRODUCT_STRLEN 126
+#define CP210x_MAX_SERIAL_STRLEN 63
+#define CP210x_MAX_MAXPOWER 250
+
+/* Used to pass variable sized buffers between user and kernel space (ioctls) */
+typedef struct {
+ char* buf;
+ size_t len;
+} cp2101_buffer_t;
+
+/* Port config definitions */
+typedef struct {
+ uint16_t mode; /* Push-pull = 1, Open-drain = 0 */
+ uint16_t lowPower;
+ uint16_t latch; /* Logic high = 1, Logic low = 0 */
+} cp2101_port_state_t;
+
+typedef struct {
+ cp2101_port_state_t reset;
+ cp2101_port_state_t suspend;
+ uint8_t enhancedFxn;
+} cp2101_port_config_t;
+
+#define PORT_CONFIG_LEN 13 /* Because sizeof() will pad to full words */
+
+
+/*
+ * cp2101_buf_from_user
+ * Copy a buffer from user space, returning the number of bytes copied
+ * from ubuf.buf into kbuf. klen is the size of the buffer at kbuf.
+ */
+size_t copy_buf_from_user(char* kbuf, unsigned long ubuf, size_t klen)
+{
+ cp2101_buffer_t t;
+
+ if (!kbuf || !ubuf || !klen || copy_from_user(&t, (cp2101_buffer_t *)ubuf,
+ sizeof(t)))
+ return 0;
+ if (t.len < klen)
+ klen = t.len;
+ if (!t.buf || !t.len || copy_from_user(kbuf, t.buf, klen))
+ return 0;
+ return klen;
+}
+
+/*
+ * cp2101_get_config
+ * Reads from the CP2101 configuration registers
+ * 'size' is specified in bytes.
+ * 'data' is a pointer to a pre-allocated array of integers large
+ * enough to hold 'size' bytes (with 4 bytes to each integer)
+ */
+static int cp2101_get_config(struct usb_serial_port* port, u8 request,
+ unsigned int *data, int size)
+{
+ struct usb_serial *serial = port->serial;
+ u32 *buf;
+ int result, i, length;
+
+ /* Number of integers required to contain the array */
+ length = (((size - 1) | 3) + 1)/4;
+
+ buf = kmalloc (length * sizeof(u32), GFP_KERNEL);
+ memset(buf, 0, length * sizeof(u32));
+
+ if (!buf) {
+ DEV_ERR(&port->dev,"%s - out of memory.\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+
+ /* For get requests, the request number must be incremented */
+ request++;
+
+ /* Issue the request, attempting to read 'size' bytes */
+ result = usb_control_msg (
+ serial->dev,
+ usb_rcvctrlpipe (serial->dev, 0),
+ request,
+ REQTYPE_DEVICE_TO_HOST,
+ 0x0000,
+ 0,
+ buf,
+ size,
+ 300);
+
+ /* Convert data into an array of integers */
+ for (i=0; i<length; i++) data[i] = le32_to_cpu(buf[i]);
+
+ kfree(buf);
+
+ if (result != size) {
+ DEV_ERR(&port->dev,"%s - Unable to send config request, "
+ "request=0x%x size=%d result=%d\n",
+ __FUNCTION__, request, size, result);
+ return -EPROTO;
+ }
+
+ return 0;
+}
+
+/*
+ * cp2101_set_config
+ * Writes to the CP2101 configuration registers
+ * Values less than 16 bits wide are sent directly
+ * 'size' is specified in bytes.
+ */
+static int cp2101_set_config(struct usb_serial_port* port, u8 request,
+ unsigned int *data, int size)
+{
+ struct usb_serial *serial = port->serial;
+ u32 *buf;
+ int result, i, length;
+
+ /* Number of integers required to contain the array */
+ length = (((size - 1) | 3) + 1)/4;
+
+ buf = kmalloc(length * sizeof(u32), GFP_KERNEL);
+ if (!buf) {
+ DEV_ERR(&port->dev,"%s - out of memory.\n",
+ __FUNCTION__);
+ return -ENOMEM;
+ }
+
+ /* Array of integers into bytes */
+ for (i = 0; i < length; i++) buf[i] = cpu_to_le32(data[i]);
+
+ if (size > 2) {
+ result = usb_control_msg (
+ serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ request,
+ REQTYPE_HOST_TO_DEVICE,
+ 0x0000,
+ 0,
+ buf,
+ size,
+ 300);
+ } else {
+ result = usb_control_msg (
+ serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ request,
+ REQTYPE_HOST_TO_DEVICE,
+ data[0],
+ 0,
+ NULL,
+ 0,
+ 300);
+ }
+
+ kfree(buf);
+
+ if ((size > 2 && result != size) || result < 0) {
+ DEV_ERR(&port->dev,"%s - Unable to send request, "
+ "request=0x%x size=%d result=%d\n",
+ __FUNCTION__, request, size, result);
+ return -EPROTO;
+ }
+
+ /* Single data value */
+ result = usb_control_msg (
+ serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ request,
+ REQTYPE_HOST_TO_DEVICE,
+ data[0],
+ 0,
+ NULL,
+ 0,
+ 300);
+ return 0;
+}
+
+/*
+ * cp2101_set_config_single
+ * Convenience function for calling cp2101_set_config on single data values
+ * without requiring an integer pointer
+ */
+static inline int cp2101_set_config_single(struct usb_serial_port* port,
+ u8 request, unsigned int data)
+{
+ return cp2101_set_config(port, request, &data, 2);
+}
+
+/*
+ * cp2101_ctlmsg
+ * A generic usb control message interface.
+ * Returns the actual size of the data read or written within the message, 0
+ * if no data were read or written, or a negative value to indicate an error.
+ */
+static int cp2101_ctlmsg(struct usb_serial_port* port, u8 request,
+ u8 requestype, u16 value, u16 index, void* data, u16 size)
+{
+ struct usb_device *dev = port->serial->dev;
+ u8 *tbuf;
+ int ret;
+
+ if (!(tbuf = kmalloc(size, GFP_KERNEL)))
+ return -ENOMEM;
+ if (requestype & 0x80) {
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
+ requestype, value, index, tbuf, size, 300);
+ if (ret > 0 && size)
+ memcpy(data, tbuf, size);
+ } else {
+ if (size)
+ memcpy(tbuf, data, size);
+ ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
+ requestype, value, index, tbuf, size, 300);
+ }
+ kfree(tbuf);
+ if (ret < 0 && ret != -EPIPE) {
+ dev_printk(KERN_DEBUG, &dev->dev, "cp2101: control failed cmd rqt %u "
+ "rq %u len %u ret %d\n", requestype, request, size, ret);
+ }
+ return ret;
+}
+
+static int cp2101_reset(struct usb_serial_port *port)
+{
+ dbg("%s", __FUNCTION__);
+
+#if 1
+ /* Is this better than usb_device_reset? It may be. Once a client issues
+ * the reset ioctl, it must disconnect and reconnect, since the USB
+ * connections are torn down. We also ignore the error return, since the
+ * part resets and doesn't send one...
+ */
+ cp2101_ctlmsg(port, 0xff, 0x40, 0x0008, 0x00, 0, 0);
+#else
+ usb_reset_device(port->serial->dev);
+#endif
+ return 0;
+}
+
+static int cp2101_get_partnum(struct usb_serial_port *port)
+{
+ static u8 _partnum = 0;
+ int ret = CP210x_SUCCESS;
+ if (!_partnum) {
+ u8 addr = port->serial->dev->actconfig->interface[0]->cur_altsetting->
+ endpoint[0].desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+
+ if (addr == 0x03 || addr == 0x02) /* The part is a cp2101 */
+ _partnum = 0x01;
+ else if (addr == 0x01) /* Must query part to determine part number */
+ ret = (cp2101_ctlmsg(port, 0xff, 0xc0, 0x370b, 0x00, &_partnum, 1)
+ == 1) ? CP210x_SUCCESS : CP210x_DEVICE_IO_FAILED;
+ else
+ ret = CP210x_DEVICE_IO_FAILED;
+ }
+ dbg("%s - partnum %u err %d", __FUNCTION__, _partnum, ret);
+ return (ret == CP210x_SUCCESS) ? _partnum : 0;
+}
+
+inline int cp2101_setu16(struct usb_serial_port *port, int cmd,
+ unsigned int value)
+{
+ return cp2101_ctlmsg(port, 0xff, 0x40, 3700 | (cmd & 0xff), value, 0, 0);
+}
+
+/* Populates usbstr with: (len) + (0x03) + unicode(str). Each char in str
+ * takes up two bytes in unicode format, so the resulting len(usbstr) is
+ * 2 * len(str) + 2.
+ * Returns the resulting length of the string in usbstr.
+ * This function can accept overlapping usbstr and str as long as the overlap
+ * does not cause data written to usbstr to overwrite data not yet read from
+ * str.
+ */
+static int make_usb_string(char* usbstr, size_t usblen, char* src,
+ size_t srclen)
+{
+ int len = 0;
+
+ if (usbstr && usblen >= 2 && src && *src && srclen) {
+ char* p;
+
+ /* The usb string format uses a single byte to represent length */
+ if (usblen > 256)
+ usblen = 256;
+
+ p = usbstr + 1;
+ *p++ = 0x03;
+ len = 2;
+ while (srclen && len < usblen) {
+ *p++ = *src++;
+ *p++ = 0;
+ len += 2;
+ srclen--;
+ }
+ *usbstr = (char)len;
+ }
+ return len;
+}
+
+/*
+ * cp2101_setstr
+ *
+ * Set a USB string descriptor using proprietary cp210x control messages.
+ * Return the number of characters actually written.
+ */
+inline int cp2101_setstr(struct usb_serial_port *port, int cmd, char *usbstr)
+{
+ unsigned len = usbstr[0];
+ int ret = cp2101_ctlmsg(port, 0xff, 0x40, 0x3700 | (cmd & 0xff), 0, usbstr,
+ len);
+ dbg("%s - cmd 0x%02x len %d ret %d", __FUNCTION__, cmd, len, ret);
+ return ret;
+}
+
+static int cp2101_open (struct usb_serial_port *port, struct file *filp)
+{
+ struct usb_serial *serial = port->serial;
+ int result;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) {
+ DEV_ERR(&port->dev, "%s - Unable to enable UART\n",
+ __FUNCTION__);
+ return -EPROTO;
+ }
+
+ /* Start reading from the device */
+ usb_fill_bulk_urb (port->read_urb, serial->dev,
+ usb_rcvbulkpipe(serial->dev,
+ port->bulk_in_endpointAddress),
+ port->read_urb->transfer_buffer,
+ port->read_urb->transfer_buffer_length,
+ serial->type->read_bulk_callback,
+ port);
+ result = USB_SUBMIT_URB_KERNEL(port->read_urb);
+ if (result) {
+ DEV_ERR(&port->dev, "%s - failed resubmitting read urb, "
+ "error %d\n", __FUNCTION__, result);
+ return result;
+ }
+
+ /* Configure the termios structure */
+ cp2101_get_termios(port);
+
+ /* Set the DTR and RTS pins low */
+ cp2101_tiocmset(port, NULL, TIOCM_DTR | TIOCM_RTS, 0);
+
+ return 0;
+}
+
+static void cp2101_cleanup (struct usb_serial_port *port)
+{
+ struct usb_serial *serial = port->serial;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (serial != NULL && serial->dev) {
+ /* shutdown any bulk reads that might be going on */
+ if (serial->num_bulk_out)
+ USB_KILL_URB(port->write_urb);
+ if (serial->num_bulk_in)
+ USB_KILL_URB(port->read_urb);
+ }
+
+#ifdef LINUX26
+ kfree (usb_get_serial_port_data(port));
+ usb_set_serial_port_data(port, NULL);
+#else
+ /*TODOGLA: port.private maybe?
+ Nobody is using that at the moement in this driver*/
+#endif
+
+}
+
+static void cp2101_close (struct usb_serial_port *port, struct file * filp)
+{
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ /* shutdown our urbs */
+ dbg("%s - shutting down urbs", __FUNCTION__);
+ USB_KILL_URB(port->write_urb);
+ USB_KILL_URB(port->read_urb);
+
+ cp2101_set_config_single(port, CP2101_UART, UART_DISABLE);
+}
+
+/*
+ * cp2101_get_termios
+ * Reads the baud rate, data bits, parity, stop bits and flow control mode
+ * from the device, corrects any unsupported values, and configures the
+ * termios structure to reflect the state of the device
+ */
+static void cp2101_get_termios (struct usb_serial_port *port)
+{
+ unsigned int cflag, modem_ctl[4];
+ int baud;
+ int bits;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if ((!port->tty) || (!port->tty->termios)) {
+ dbg("%s - no tty structures", __FUNCTION__);
+ return;
+ }
+ cflag = port->tty->termios->c_cflag;
+
+ cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2);
+ /* Convert to baudrate */
+ if (baud)
+ baud = BAUD_RATE_GEN_FREQ / baud;
+
+ dbg("%s - baud rate = %d", __FUNCTION__, baud);
+ cflag &= ~CBAUD;
+ switch (baud) {
+ /*
+ * The baud rates which are commented out below
+ * appear to be supported by the device
+ * but are non-standard
+ */
+ case 600: cflag |= B600; break;
+ case 1200: cflag |= B1200; break;
+ case 1800: cflag |= B1800; break;
+ case 2400: cflag |= B2400; break;
+ case 4800: cflag |= B4800; break;
+ /*case 7200: cflag |= B7200; break;*/
+ case 9600: cflag |= B9600; break;
+ /*case 14400: cflag |= B14400; break;*/
+ case 19200: cflag |= B19200; break;
+ /*case 28800: cflag |= B28800; break;*/
+ case 38400: cflag |= B38400; break;
+ /*case 55854: cflag |= B55054; break;*/
+ case 57600: cflag |= B57600; break;
+ case 115200: cflag |= B115200; break;
+ /*case 127117: cflag |= B127117; break;*/
+ case 230400: cflag |= B230400; break;
+ case 460800: cflag |= B460800; break;
+ case 921600: cflag |= B921600; break;
+ /*case 3686400: cflag |= B3686400; break;*/
+ default:
+ dbg("%s - Baud rate is not supported, "
+ "using 9600 baud", __FUNCTION__);
+ cflag |= B9600;
+ cp2101_set_config_single(port, CP2101_BAUDRATE,
+ (BAUD_RATE_GEN_FREQ/9600));
+ break;
+ }
+
+ cp2101_get_config(port, CP2101_BITS, &bits, 2);
+ cflag &= ~CSIZE;
+ switch(bits & BITS_DATA_MASK) {
+ case BITS_DATA_5:
+ dbg("%s - data bits = 5", __FUNCTION__);
+ cflag |= CS5;
+ break;
+ case BITS_DATA_6:
+ dbg("%s - data bits = 6", __FUNCTION__);
+ cflag |= CS6;
+ break;
+ case BITS_DATA_7:
+ dbg("%s - data bits = 7", __FUNCTION__);
+ cflag |= CS7;
+ break;
+ case BITS_DATA_8:
+ dbg("%s - data bits = 8", __FUNCTION__);
+ cflag |= CS8;
+ break;
+ case BITS_DATA_9:
+ dbg("%s - data bits = 9 (not supported, "
+ "using 8 data bits)", __FUNCTION__);
+ cflag |= CS8;
+ bits &= ~BITS_DATA_MASK;
+ bits |= BITS_DATA_8;
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
+ break;
+ default:
+ dbg("%s - Unknown number of data bits, "
+ "using 8", __FUNCTION__);
+ cflag |= CS8;
+ bits &= ~BITS_DATA_MASK;
+ bits |= BITS_DATA_8;
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
+ break;
+ }
+
+ switch(bits & BITS_PARITY_MASK) {
+ case BITS_PARITY_NONE:
+ dbg("%s - parity = NONE", __FUNCTION__);
+ cflag &= ~PARENB;
+ break;
+ case BITS_PARITY_ODD:
+ dbg("%s - parity = ODD", __FUNCTION__);
+ cflag |= (PARENB|PARODD);
+ break;
+ case BITS_PARITY_EVEN:
+ dbg("%s - parity = EVEN", __FUNCTION__);
+ cflag &= ~PARODD;
+ cflag |= PARENB;
+ break;
+ case BITS_PARITY_MARK:
+ dbg("%s - parity = MARK (not supported, "
+ "disabling parity)", __FUNCTION__);
+ cflag &= ~PARENB;
+ bits &= ~BITS_PARITY_MASK;
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
+ break;
+ case BITS_PARITY_SPACE:
+ dbg("%s - parity = SPACE (not supported, "
+ "disabling parity)", __FUNCTION__);
+ cflag &= ~PARENB;
+ bits &= ~BITS_PARITY_MASK;
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
+ break;
+ default:
+ dbg("%s - Unknown parity mode, "
+ "disabling parity", __FUNCTION__);
+ cflag &= ~PARENB;
+ bits &= ~BITS_PARITY_MASK;
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
+ break;
+ }
+
+ cflag &= ~CSTOPB;
+ switch(bits & BITS_STOP_MASK) {
+ case BITS_STOP_1:
+ dbg("%s - stop bits = 1", __FUNCTION__);
+ break;
+ case BITS_STOP_1_5:
+ dbg("%s - stop bits = 1.5 (not supported, "
+ "using 1 stop bit)", __FUNCTION__);
+ bits &= ~BITS_STOP_MASK;
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
+ break;
+ case BITS_STOP_2:
+ dbg("%s - stop bits = 2", __FUNCTION__);
+ cflag |= CSTOPB;
+ break;
+ default:
+ dbg("%s - Unknown number of stop bits, "
+ "using 1 stop bit", __FUNCTION__);
+ bits &= ~BITS_STOP_MASK;
+ cp2101_set_config(port, CP2101_BITS, &bits, 2);
+ break;
+ }
+
+ cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16);
+ if (modem_ctl[0] & 0x0008) {
+ dbg("%s - flow control = CRTSCTS", __FUNCTION__);
+ cflag |= CRTSCTS;
+ } else {
+ dbg("%s - flow control = NONE", __FUNCTION__);
+ cflag &= ~CRTSCTS;
+ }
+
+ port->tty->termios->c_cflag = cflag;
+}
+
+static void cp2101_set_termios (struct usb_serial_port *port,
+ struct termios *old_termios)
+{
+ unsigned int cflag, old_cflag=0;
+ int baud=0, bits;
+ unsigned int modem_ctl[4];
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if ((!port->tty) || (!port->tty->termios)) {
+ dbg("%s - no tty structures", __FUNCTION__);
+ return;
+ }
+ cflag = port->tty->termios->c_cflag;
+
+ /* Check that they really want us to change something */
+ if (old_termios) {
+ if ((cflag == old_termios->c_cflag) &&
+ (RELEVANT_IFLAG(port->tty->termios->c_iflag)
+ == RELEVANT_IFLAG(old_termios->c_iflag))) {
+ dbg("%s - nothing to change...", __FUNCTION__);
+ return;
+ }
+
+ old_cflag = old_termios->c_cflag;
+ }
+
+ /* If the baud rate is to be updated*/
+ if ((cflag & CBAUD) != (old_cflag & CBAUD)) {
+ switch (cflag & CBAUD) {
+ /*
+ * The baud rates which are commented out below
+ * appear to be supported by the device
+ * but are non-standard
+ */
+ case B0: baud = 0; break;
+ case B600: baud = 600; break;
+ case B1200: baud = 1200; break;
+ case B1800: baud = 1800; break;
+ case B2400: baud = 2400; break;
+ case B4800: baud = 4800; break;
+ /*case B7200: baud = 7200; break;*/
+ case B9600: baud = 9600; break;
+ /*ase B14400: baud = 14400; break;*/
+ case B19200: baud = 19200; break;
+ /*case B28800: baud = 28800; break;*/
+ case B38400: baud = 38400; break;
+ /*case B55854: baud = 55054; break;*/
+ case B57600: baud = 57600; break;
+ case B115200: baud = 115200; break;
+ /*case B127117: baud = 127117; break;*/
+ case B230400: baud = 230400; break;
+ case B460800: baud = 460800; break;
+ case B921600: baud = 921600; break;
+ /*case B3686400: baud = 3686400; break;*/
+ default:
+ DEV_ERR(&port->dev, "cp2101 driver does not "
+ "support the baudrate requested\n");
+ break;
+ }
+
+ if (baud) {
+ dbg("%s - Setting baud rate to %d baud", __FUNCTION__,
+ baud);
+ if (cp2101_set_config_single(port, CP2101_BAUDRATE,
+ (BAUD_RATE_GEN_FREQ / baud)))
+ DEV_ERR(&port->dev, "Baud rate requested not "
+ "supported by device\n");
+ }
+ }
+
+ /* If the number of data bits is to be updated */
+ if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
+ cp2101_get_config(port, CP2101_BITS, &bits, 2);
+ bits &= ~BITS_DATA_MASK;
+ switch (cflag & CSIZE) {
+ case CS5:
+ bits |= BITS_DATA_5;
+ dbg("%s - data bits = 5", __FUNCTION__);
+ break;
+ case CS6:
+ bits |= BITS_DATA_6;
+ dbg("%s - data bits = 6", __FUNCTION__);
+ break;
+ case CS7:
+ bits |= BITS_DATA_7;
+ dbg("%s - data bits = 7", __FUNCTION__);
+ break;
+ case CS8:
+ bits |= BITS_DATA_8;
+ dbg("%s - data bits = 8", __FUNCTION__);
+ break;
+ /*case CS9:
+ bits |= BITS_DATA_9;
+ dbg("%s - data bits = 9", __FUNCTION__);
+ break;*/
+ default:
+ DEV_ERR(&port->dev, "cp2101 driver does not "
+ "support the number of bits requested,"
+ " using 8 bit mode\n");
+ bits |= BITS_DATA_8;
+ break;
+ }
+ if (cp2101_set_config(port, CP2101_BITS, &bits, 2))
+ DEV_ERR(&port->dev,"Number of data bits requested "
+ "not supported by device\n");
+ }
+
+ if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) {
+ cp2101_get_config(port, CP2101_BITS, &bits, 2);
+ bits &= ~BITS_PARITY_MASK;
+ if (cflag & PARENB) {
+ if (cflag & PARODD) {
+ bits |= BITS_PARITY_ODD;
+ dbg("%s - parity = ODD", __FUNCTION__);
+ } else {
+ bits |= BITS_PARITY_EVEN;
+ dbg("%s - parity = EVEN", __FUNCTION__);
+ }
+ }
+ if (cp2101_set_config(port, CP2101_BITS, &bits, 2))
+ DEV_ERR(&port->dev,"Parity mode not supported "
+ "by device\n");
+ }
+
+ if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) {
+ cp2101_get_config(port, CP2101_BITS, &bits, 2);
+ bits &= ~BITS_STOP_MASK;
+ if (cflag & CSTOPB) {
+ bits |= BITS_STOP_2;
+ dbg("%s - stop bits = 2", __FUNCTION__);
+ } else {
+ bits |= BITS_STOP_1;
+ dbg("%s - stop bits = 1", __FUNCTION__);
+ }
+ if (cp2101_set_config(port, CP2101_BITS, &bits, 2))
+ DEV_ERR(&port->dev,"Number of stop bits requested "
+ "not supported by device\n");
+ }
+
+ if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
+ cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16);
+ dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x",
+ __FUNCTION__, modem_ctl[0], modem_ctl[1],
+ modem_ctl[2], modem_ctl[3]);
+
+ if (cflag & CRTSCTS) {
+ modem_ctl[0] &= ~0x7B;
+ modem_ctl[0] |= 0x09;
+ modem_ctl[1] = 0x80;
+ dbg("%s - flow control = CRTSCTS", __FUNCTION__);
+ } else {
+ modem_ctl[0] &= ~0x7B;
+ modem_ctl[0] |= 0x01;
+ modem_ctl[1] |= 0x40;
+ dbg("%s - flow control = NONE", __FUNCTION__);
+ }
+
+ dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x",
+ __FUNCTION__, modem_ctl[0], modem_ctl[1],
+ modem_ctl[2], modem_ctl[3]);
+ cp2101_set_config(port, CP2101_MODEMCTL, modem_ctl, 16);
+ }
+
+}
+
+static int cp2101_tiocmset (struct usb_serial_port *port, struct file *file,
+ unsigned int set, unsigned int clear)
+{
+ int control = 0;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (set & TIOCM_RTS) {
+ control |= CONTROL_RTS;
+ control |= CONTROL_WRITE_RTS;
+ }
+ if (set & TIOCM_DTR) {
+ control |= CONTROL_DTR;
+ control |= CONTROL_WRITE_DTR;
+ }
+ if (clear & TIOCM_RTS) {
+ control &= ~CONTROL_RTS;
+ control |= CONTROL_WRITE_RTS;
+ }
+ if (clear & TIOCM_DTR) {
+ control &= ~CONTROL_DTR;
+ control |= CONTROL_WRITE_DTR;
+ }
+
+ dbg("%s - control = 0x%.4x", __FUNCTION__, control);
+
+ return cp2101_set_config(port, CP2101_CONTROL, &control, 2);
+
+}
+
+static int cp2101_tiocmget (struct usb_serial_port *port, struct file *file)
+{
+ int control, result;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ cp2101_get_config(port, CP2101_CONTROL, &control, 1);
+
+ result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0)
+ |((control & CONTROL_RTS) ? TIOCM_RTS : 0)
+ |((control & CONTROL_CTS) ? TIOCM_CTS : 0)
+ |((control & CONTROL_DSR) ? TIOCM_DSR : 0)
+ |((control & CONTROL_RING)? TIOCM_RI : 0)
+ |((control & CONTROL_DCD) ? TIOCM_CD : 0);
+
+ dbg("%s - control = 0x%.2x", __FUNCTION__, control);
+
+ return result;
+}
+
+static void cp2101_break_ctl (struct usb_serial_port *port, int break_state)
+{
+ int state;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+ if (break_state == 0)
+ state = BREAK_OFF;
+ else
+ state = BREAK_ON;
+ dbg("%s - turning break %s", __FUNCTION__,
+ state==BREAK_OFF ? "off" : "on");
+ cp2101_set_config(port, CP2101_BREAK, &state, 2);
+}
+
+/* Set all gpio simultaneously */
+static int cp2101_gpioset(struct usb_serial_port *port, u8 gpio)
+{
+ dbg("%s - port %d, gpio = 0x%.2x", __FUNCTION__, port->number, gpio);
+
+ return cp2101_ctlmsg(port, 0xff, 0x40, 0x37e1,
+ ((uint16_t)gpio << 8) | GPIO_MASK, 0, 0);
+}
+
+/* Set select gpio bits */
+static int cp2101_gpiosetb(struct usb_serial_port *port, u8 set, u8 clear)
+{
+ u16 gpio = 0;
+
+ /* The bitmask is in the LSB, the values in the MSB */
+ if (set & GPIO_0)
+ gpio |= (GPIO_0 << 8)|GPIO_0;
+ if (set & GPIO_1)
+ gpio |= (GPIO_1 << 8)|GPIO_1;
+ if (set & GPIO_2)
+ gpio |= (GPIO_2 << 8)|GPIO_2;
+ if (set & GPIO_3)
+ gpio |= (GPIO_3 << 8)|GPIO_3;
+ if (clear & GPIO_0)
+ gpio = (gpio & ~(GPIO_0 << 8))|GPIO_0;
+ if (clear & GPIO_1)
+ gpio = (gpio & ~(GPIO_1 << 8))|GPIO_1;
+ if (clear & GPIO_2)
+ gpio = (gpio & ~(GPIO_2 << 8))|GPIO_2;
+ if (clear & GPIO_3)
+ gpio = (gpio & ~(GPIO_3 << 8))|GPIO_3;
+
+ dbg("%s - port %d, gpiob = 0x%.4x", __FUNCTION__, port->number, gpio);
+
+ /* FIXME: how about REQTYPE_HOST_TO_DEVICE instead of 0x40? */
+ return cp2101_ctlmsg(port, 0xff, 0x40, 0x37e1, gpio, 0, 0);
+}
+
+static int cp2101_gpioget(struct usb_serial_port *port, u8* gpio)
+{
+ int ret;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ /* FIXME: how about REQTYPE_DEVICE_TO_HOST instead of 0xc0? */
+ ret = cp2101_ctlmsg(port, 0xff, 0xc0, 0x00c2, 0, gpio, 1);
+
+ dbg("%s - gpio = 0x%.2x (%d)", __FUNCTION__, *gpio, ret);
+
+ return (ret == 1) ? 0 : -1;
+}
+
+static int cp2101_portconfset(struct usb_serial_port *port,
+ cp2101_port_config_t* config)
+{
+ cp2101_port_config_t lconfig;
+ int ret;
+
+ dbg("%s", __FUNCTION__);
+
+ memcpy(&lconfig, config, sizeof(lconfig));
+
+ /* apparently not implemented yet */
+ lconfig.suspend.lowPower = 0;
+ lconfig.reset.lowPower = 0;
+
+ /* Words from cp2103 are MSB */
+ lconfig.reset.mode = cpu_to_be16(config->reset.mode);
+ /* lconfig.reset.lowPower = cpu_to_be16(config->reset.lowPower); */
+ lconfig.reset.latch = cpu_to_be16(config->reset.latch);
+ lconfig.suspend.mode = cpu_to_be16(config->suspend.mode);
+ /* lconfig.suspend.lowPower = cpu_to_be16(config->suspend.lowPower); */
+ lconfig.suspend.latch = cpu_to_be16(config->suspend.latch);
+
+ ret = cp2101_ctlmsg(port, 0xff, 0x40, 0x370c, 0, &lconfig, PORT_CONFIG_LEN);
+ if (ret == PORT_CONFIG_LEN)
+ return 0;
+ else if (ret >= 0)
+ return -1;
+ else
+ return ret;
+}
+
+static int cp2101_portconfget(struct usb_serial_port *port,
+ cp2101_port_config_t* config)
+{
+ int ret;
+
+ dbg("%s", __FUNCTION__);
+
+ ret = cp2101_ctlmsg(port, 0xff, 0xc0, 0x370c, 0, config, PORT_CONFIG_LEN);
+ if (ret == PORT_CONFIG_LEN) {
+ /* Words from cp2103 are MSB */
+ config->reset.mode = be16_to_cpu(config->reset.mode);
+ config->reset.lowPower = be16_to_cpu(config->reset.lowPower);
+ config->reset.latch = be16_to_cpu(config->reset.latch);
+ config->suspend.mode = be16_to_cpu(config->suspend.mode);
+ config->suspend.lowPower = be16_to_cpu(config->suspend.lowPower);
+ config->suspend.latch = be16_to_cpu(config->suspend.latch);
+
+ /* apparently not implemented yet */
+ config->reset.lowPower = 0;
+ config->suspend.lowPower = 0;
+
+ return 0;
+ } else if (ret >= 0)
+ return -1;
+ else
+ return ret;
+
+}
+
+static int cp2101_ioctl (struct usb_serial_port *port, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd);
+
+ switch (cmd) {
+
+#ifndef LINUX26
+ case TIOCMGET:
+ {
+ int result = cp2101_tiocmget(port, file);
+ if (copy_to_user(&arg, &result, sizeof(int)))
+ return -EFAULT;
+ return 0;
+ }
+ break;
+
+ case TIOCMSET:
+ case TIOCMBIS:
+
+ case TIOCMBIC:
+ {
+ int val = 0;
+
+ if (copy_from_user(&val, &arg, sizeof(int)))
+ return -EFAULT;
+
+/* this looks wrong: TIOCMSET isn't going to work right */
+ if(cp2101_tiocmset(port, file, cmd==TIOCMBIC?0:val, cmd==TIOCMBIC?val:0))
+ return -EFAULT;
+ return 0;
+ }
+ break;
+#endif
+
+ case IOCTL_GPIOGET:
+ if (cp2101_get_partnum(port) == CP210x_CP2103_VERSION) {
+ u8 gpio = 0;
+ if (!cp2101_gpioget(port, &gpio) &&
+ !copy_to_user((u8*)arg, &gpio, sizeof(gpio)))
+ return 0;
+ }
+ return -EFAULT;
+ break;
+
+ case IOCTL_GPIOSET:
+ if (cp2101_get_partnum(port) == CP210x_CP2103_VERSION &&
+ !cp2101_gpioset(port, arg))
+ return 0;
+ return -EFAULT;
+ break;
+
+ case IOCTL_GPIOBIC:
+ case IOCTL_GPIOBIS:
+ if (cp2101_get_partnum(port) == CP210x_CP2103_VERSION &&
+ !cp2101_gpiosetb(port, (cmd==IOCTL_GPIOBIC) ? 0 : arg,
+ (cmd==IOCTL_GPIOBIC) ? arg : 0))
+ return 0;
+ return -EFAULT;
+ break;
+
+ case IOCTL_DEVICERESET:
+ return cp2101_reset(port);
+ break;
+
+ case IOCTL_PORTCONFGET:
+ {
+ cp2101_port_config_t config;
+ if (!cp2101_portconfget(port, &config) &&
+ !copy_to_user((cp2101_port_config_t*)arg, &config,
+ sizeof(config)))
+ return 0;
+ }
+ return -EFAULT;
+ break;
+
+ case IOCTL_PORTCONFSET:
+ {
+ cp2101_port_config_t config;
+ if (!copy_from_user(&config, (cp2101_port_config_t*)arg,
+ sizeof(config)) &&
+ !cp2101_portconfset(port, &config))
+ return 0;
+ return -EFAULT;
+ }
+ break;
+
+ case IOCTL_SETVID:
+ {
+ unsigned int vid;
+ if (!copy_from_user(&vid, (unsigned int *)arg,
+ sizeof(unsigned int)) &&
+ !cp2101_setu16(port, 0x01, vid))
+ return 0;
+ return -EFAULT;
+ }
+ break;
+
+ case IOCTL_SETPID:
+ {
+ unsigned int pid;
+ if (!copy_from_user(&pid, (unsigned int *)arg,
+ sizeof(unsigned int)) &&
+ !cp2101_setu16(port, 0x02, pid))
+ return 0;
+ return -EFAULT;
+ }
+ break;
+
+ case IOCTL_SETMFG:
+#if 0 /* Don't know how to set manufacturer desc yet */
+ {
+ char usbstr[CP210x_MAX_MFG_STRLEN * 2 + 2];
+ size_t len = copy_buf_from_user(
+ usbstr + sizeof(usbstr) - CP210x_MAX_MFG_STRLEN, arg,
+ CP210x_MAX_MFG_STRLEN);
+ len = make_usb_string(usbstr, sizeof(usbstr), str, len);
+ if (len && cp2101_setstr(port, 0x00, usbstr) == len)
+ return 0;
+ return -EFAULT;
+ }
+#endif
+ break;
+
+ case IOCTL_SETPRODUCT:
+ {
+ char usbstr[CP210x_MAX_PRODUCT_STRLEN * 2 + 2];
+ char* str = usbstr + sizeof(usbstr) - CP210x_MAX_PRODUCT_STRLEN;
+ size_t len = copy_buf_from_user(str, arg,
+ CP210x_MAX_PRODUCT_STRLEN);
+ len = make_usb_string(usbstr, sizeof(usbstr), str, len);
+ if (len && cp2101_setstr(port, 0x03, usbstr) == len)
+ return 0;
+ return -EFAULT;
+ }
+ break;
+
+ case IOCTL_SETSERIAL:
+ {
+ char usbstr[CP210x_MAX_SERIAL_STRLEN * 2 + 2];
+ char* str = usbstr + sizeof(usbstr) - CP210x_MAX_SERIAL_STRLEN;
+ size_t len = copy_buf_from_user(str, arg,
+ CP210x_MAX_SERIAL_STRLEN);
+ len = make_usb_string(usbstr, sizeof(usbstr), str, len);
+ if (len && cp2101_setstr(port, 0x04, usbstr) == len)
+ return 0;
+ return -EFAULT;
+ }
+ break;
+
+ case IOCTL_SETDEVVER:
+ {
+ unsigned int ver;
+ if (!copy_from_user(&ver, (unsigned int *)arg,
+ sizeof(unsigned int)) &&
+ !cp2101_setu16(port, 0x07, ver))
+ return 0;
+ return -EFAULT;
+ }
+ break;
+
+ default:
+ dbg("%s not supported = 0x%04x", __FUNCTION__, cmd);
+ break;
+ }
+
+ return -ENOIOCTLCMD;
+}
+
+static int cp2101_startup (struct usb_serial *serial)
+{
+ /* CP2101 buffers behave strangely unless device is reset */
+ usb_reset_device(serial->dev);
+ return 0;
+}
+
+static void cp2101_shutdown (struct usb_serial *serial)
+{
+ int i;
+
+ dbg("%s", __FUNCTION__);
+
+ /* Stop reads and writes on all ports */
+ for (i=0; i < serial->num_ports; ++i) {
+#ifdef LINUX26
+ cp2101_cleanup(serial->port[i]);
+#else
+ cp2101_cleanup(&serial->port[i]);
+#endif
+ }
+}
+
+static int __init cp2101_init (void)
+{
+ int retval;
+
+ retval = usb_serial_register(&cp2101_device);
+ if (retval)
+ return retval; /* Failed to register */
+
+#ifdef LINUX26
+ retval = usb_register(&cp2101_driver);
+ if (retval) {
+ /* Failed to register */
+ usb_serial_deregister(&cp2101_device);
+ return retval;
+ }
+#endif
+ /* Success */
+ info(DRIVER_DESC " " DRIVER_VERSION);
+ return 0;
+}
+
+static void __exit cp2101_exit (void)
+{
+#ifdef LINUX26
+ usb_deregister (&cp2101_driver);
+#endif
+ usb_serial_deregister (&cp2101_device);
+}
+
+module_init(cp2101_init);
+module_exit(cp2101_exit);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+#ifdef LINUX26
+MODULE_VERSION(DRIVER_VERSION);
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+#else
+MODULE_PARM(debug, "i");
+#endif
+MODULE_PARM_DESC(debug, "Enable verbose debugging messages");
+
+/*
+vi:ts=4
+*/
+
projects / cp210x.git / blobdiff