From: smckown Date: Wed, 25 Nov 2009 20:10:53 +0000 (+0000) Subject: Modify package so the resultant module is named cp210x instead of cp2101. X-Git-Tag: debian/0.11.2-5.2tmi~6 X-Git-Url: https://oss.titaniummirror.com/gitweb?p=cp210x.git;a=commitdiff_plain;h=affe5c7c95eab8dd65c10631bb7435acbae8b1c4 Modify package so the resultant module is named cp210x instead of cp2101. This removes the ambiguity associated with the native kernel driver module name of cp2101. --- diff --git a/Makefile b/Makefile index c05566d..acaa738 100644 --- a/Makefile +++ b/Makefile @@ -4,9 +4,9 @@ # Change or override these values as necessary for each package release -PKGVER = 0.11 +PKGVER = 0.11.1 DEBDIST = hardy -DEBRELEASE = 0tmi +DEBRELEASE = 1tmi # No need to change anything below this line diff --git a/Makefile.dkms b/Makefile.dkms index c84885b..b8de4d4 100755 --- a/Makefile.dkms +++ b/Makefile.dkms @@ -6,7 +6,6 @@ all: ./configure -kver $(KVER) test -f Makefile.config $(MAKE) -f Makefile.go - cp cp2101.ko cp210x.ko $(STRIP) cp210x.ko clean: diff --git a/README b/README index 0c1b0f7..da76bda 100644 --- a/README +++ b/README @@ -23,14 +23,14 @@ Build a .deb locally is quite a bit simpler and faster: * # To install locally, FIRST REMOVE all cp210x-module packages installed. Then, * sudo dpkg -i build/cp210x-module*.deb -The cp2101.ko file can be built and installed from the source directory as +The cp210x.ko file can be built and installed from the source directory as well, but this isn't recommended: * Check out the code * cd cp210x/src * ./configure -kver $(uname -r) * make -f Makefile.go all -* # The binary is called cp2101.ko +* # The binary is called cp210x.ko * # To install, * chmod a+x installmod * sudo make -f Makefile.go install @@ -39,7 +39,7 @@ well, but this isn't recommended: Older kernels are supported, but require one to check out the pre2.6.24 branch from the repo, then follow any of the steps above. You may have to -edit cp2101.c and replace: +edit cp210x.c and replace: #include "usb-serial.h" with: #include "/path/to/usb-serial.h" diff --git a/debian.in/prerm b/debian.in/prerm index d685190..e7a02ec 100755 --- a/debian.in/prerm +++ b/debian.in/prerm @@ -7,7 +7,6 @@ set -e case "$1" in remove|upgrade|deconfigure) - rmmod cp2101 2>/dev/null || true rmmod xxROOTNAMExx 2>/dev/null || true if [ "`dkms status -m $NAME`" ]; then dkms remove -m $NAME -v $VERSION --all diff --git a/src/Makefile b/src/Makefile index 5d5dbb8..4aa7c85 100644 --- a/src/Makefile +++ b/src/Makefile @@ -1,4 +1,4 @@ -# CP2101 Makefile +# CP210x Makefile ifeq ("$(src)", "") include Makefile.config diff --git a/src/Makefile.go b/src/Makefile.go index 407680c..90912fe 100644 --- a/src/Makefile.go +++ b/src/Makefile.go @@ -11,15 +11,15 @@ # mrproper - remove emacs debris # -OBJS = cp2101.o +OBJS = cp210x.o -SRC = cp2102.c +SRC = cp210x.c include ./Makefile.config KVER=$(KVER1).$(KVER2).$(KVER3) -MODULE=cp2101$(EXT) +MODULE=cp210x$(EXT) MODULES_DIR=$(INSTALL_PREFIX)/lib/modules MODULES_VER_DIR=$(MODULES_DIR)/$(KVER) diff --git a/src/Makefile24 b/src/Makefile24 index 4a19ad3..58cf9b6 100644 --- a/src/Makefile24 +++ b/src/Makefile24 @@ -2,6 +2,6 @@ EXTRA_CFLAGS += -I$(LINUX_KERNEL)/drivers/usb/serial -obj-m += cp2101.o +obj-m += cp210x.o include $(TOPDIR)/Rules.make diff --git a/src/Makefile26 b/src/Makefile26 index 2456377..a3b6425 100644 --- a/src/Makefile26 +++ b/src/Makefile26 @@ -2,6 +2,6 @@ EXTRA_CFLAGS += -I$(LINUX_INCLUDE) -I$(LINUX_KERNEL)/drivers/usb/serial -DLINUX26 -obj-m := cp2101.o +obj-m := cp210x.o -cp2101-objs := $(OBJS) +cp210x-objs := $(OBJS) diff --git a/src/cp2101.c b/src/cp2101.c deleted file mode 100644 index 7ad61da..0000000 --- a/src/cp2101.c +++ /dev/null @@ -1,1289 +0,0 @@ -/* - * 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 - * - * Silicon Labs RJM: updated to 0.11 for 2.6.15 and later kernels - * - * Port configuration, usb descriptor and gpio management by R. Steve McKown - * rsmckown@gmail.com. - * - * Outstanding Issues: - * Buffers are not flushed when the port is opened. - * Multiple calls to write() may fail with "Resource temporarily unavailable" - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* - * Version Information - */ -#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 ktermios*); -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 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 *, struct file *, - unsigned int, unsigned long); - -static int debug; - -static struct usb_device_id id_table [] = { - { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ - { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ - { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ - { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ - { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ - { USB_DEVICE(0x0FCF, 0x1006) }, /* 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, 0x800A) }, /* SPORTident BSM7-D-USB main station */ - { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ - { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ - { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ - { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ - { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ - { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ - { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ - { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ - { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ - { 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, 0x819F) }, /* MJS USB Toslink Switcher */ - { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ - { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ - { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ - { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ - { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ - { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ - { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ - { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */ - { USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */ - { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ - { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ - { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ - { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ - { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ - { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ - { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ - { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ - { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ - { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ - { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ - { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ - { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ - { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ - { } /* Terminating Entry */ -}; - -MODULE_DEVICE_TABLE (usb, id_table); - -static struct usb_driver cp2101_driver = { - .name = "cp2101", - .probe = usb_serial_probe, - .disconnect = usb_serial_disconnect, - .id_table = id_table, - .no_dynamic_id = 1, -}; - -static struct usb_serial_driver cp2101_device = { - .driver = { - .owner = THIS_MODULE, - .name = "cp2101", - }, - .usb_driver = &cp2101_driver, - .id_table = id_table, - .num_interrupt_in = 0, - .num_bulk_in = NUM_DONT_CARE, - .num_bulk_out = NUM_DONT_CARE, - .num_ports = 1, - .open = cp2101_open, - .close = cp2101_close, - .ioctl = cp2101_ioctl, - .break_ctl = cp2101_break_ctl, - .set_termios = cp2101_set_termios, - .tiocmget = cp2101_tiocmget, - .tiocmset = cp2101_tiocmset, - .attach = cp2101_startup, - .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_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 */ - if (cp2101_ctlmsg(port, 0xff, 0xc0, 0x370b, 0x00, - &_partnum, 1) != 1) - ret = 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, 0x3700 | (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 first byte as 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; -} - -/* 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; - -} - -/* - * 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; - __le32 *buf; - int result, i, length; - - /* Number of integers required to contain the array */ - length = (((size - 1) | 3) + 1)/4; - - buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); - 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; idev, "%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; - __le32 *buf; - int result, i, length; - - /* Number of integers required to contain the array */ - length = (((size - 1) | 3) + 1)/4; - - buf = kmalloc(length * sizeof(__le32), 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); -} - -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(port->read_urb, GFP_KERNEL); - 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->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); - } -} - -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); -} - -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) { - - 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; - - 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 /* Silicon Labs apparently doesn't provide for setting of mfg desc */ - { - 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; -} - -/* - * 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; - } - - 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); - - tty_encode_baud_rate(port->tty, baud, baud); - cflag = port->tty->termios->c_cflag; - - 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 ktermios *old_termios) -{ - unsigned int cflag, old_cflag; - 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; - } - port->tty->termios->c_cflag &= ~CMSPAR; - - cflag = port->tty->termios->c_cflag; - old_cflag = old_termios->c_cflag; - baud = tty_get_baud_rate(port->tty); - - /* If the baud rate is to be updated*/ - if (baud != tty_termios_baud_rate(old_termios)) { - switch (baud) { - case 0: - case 600: - case 1200: - case 1800: - case 2400: - case 4800: - case 7200: - case 9600: - case 14400: - case 19200: - case 28800: - case 38400: - case 55854: - case 57600: - case 115200: - case 127117: - case 230400: - case 460800: - case 921600: - case 3686400: - break; - default: - baud = 9600; - 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"); - baud = tty_termios_baud_rate(old_termios); - } - } - } - /* Report back the resulting baud rate */ - tty_encode_baud_rate(port->tty, baud, baud); - - /* 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); -} - -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) { - cp2101_cleanup(serial->port[i]); - } -} - -static int __init cp2101_init (void) -{ - int retval; - - retval = usb_serial_register(&cp2101_device); - if (retval) - return retval; /* Failed to register */ - - retval = usb_register(&cp2101_driver); - if (retval) { - /* Failed to register */ - usb_serial_deregister(&cp2101_device); - return retval; - } - - /* Success */ - info(DRIVER_DESC " " DRIVER_VERSION); - return 0; -} - -static void __exit cp2101_exit (void) -{ - usb_deregister (&cp2101_driver); - usb_serial_deregister (&cp2101_device); -} - -module_init(cp2101_init); -module_exit(cp2101_exit); - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_VERSION(DRIVER_VERSION); -MODULE_LICENSE("GPL"); - -module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Enable verbose debugging messages"); diff --git a/src/cp210x.c b/src/cp210x.c new file mode 100644 index 0000000..0df92df --- /dev/null +++ b/src/cp210x.c @@ -0,0 +1,1289 @@ +/* + * 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 + * + * Silicon Labs RJM: updated to 0.11 for 2.6.15 and later kernels + * + * Port configuration, usb descriptor and gpio management by R. Steve McKown + * rsmckown@gmail.com. + * + * Outstanding Issues: + * Buffers are not flushed when the port is opened. + * Multiple calls to write() may fail with "Resource temporarily unavailable" + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Version Information + */ +#define DRIVER_VERSION "v0.11tmi" +#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 ktermios*); +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 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 *, struct file *, + unsigned int, unsigned long); + +static int debug; + +static struct usb_device_id id_table [] = { + { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ + { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ + { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ + { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ + { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ + { USB_DEVICE(0x0FCF, 0x1006) }, /* 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, 0x800A) }, /* SPORTident BSM7-D-USB main station */ + { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ + { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ + { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ + { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ + { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ + { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */ + { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */ + { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */ + { USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */ + { 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, 0x819F) }, /* MJS USB Toslink Switcher */ + { USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */ + { USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */ + { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ + { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ + { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ + { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ + { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ + { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */ + { USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */ + { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ + { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ + { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ + { USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */ + { USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */ + { USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */ + { USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */ + { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ + { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ + { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ + { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ + { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ + { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ + { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ + { } /* Terminating Entry */ +}; + +MODULE_DEVICE_TABLE (usb, id_table); + +static struct usb_driver cp2101_driver = { + .name = "cp210x", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = id_table, + .no_dynamic_id = 1, +}; + +static struct usb_serial_driver cp2101_device = { + .driver = { + .owner = THIS_MODULE, + .name = "cp210x", + }, + .usb_driver = &cp2101_driver, + .id_table = id_table, + .num_interrupt_in = 0, + .num_bulk_in = NUM_DONT_CARE, + .num_bulk_out = NUM_DONT_CARE, + .num_ports = 1, + .open = cp2101_open, + .close = cp2101_close, + .ioctl = cp2101_ioctl, + .break_ctl = cp2101_break_ctl, + .set_termios = cp2101_set_termios, + .tiocmget = cp2101_tiocmget, + .tiocmset = cp2101_tiocmset, + .attach = cp2101_startup, + .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_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, "cp210x: 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 */ + if (cp2101_ctlmsg(port, 0xff, 0xc0, 0x370b, 0x00, + &_partnum, 1) != 1) + ret = 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, 0x3700 | (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 first byte as 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; +} + +/* 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; + +} + +/* + * 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; + __le32 *buf; + int result, i, length; + + /* Number of integers required to contain the array */ + length = (((size - 1) | 3) + 1)/4; + + buf = kcalloc(length, sizeof(__le32), GFP_KERNEL); + 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; idev, "%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; + __le32 *buf; + int result, i, length; + + /* Number of integers required to contain the array */ + length = (((size - 1) | 3) + 1)/4; + + buf = kmalloc(length * sizeof(__le32), 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); +} + +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(port->read_urb, GFP_KERNEL); + 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->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); + } +} + +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); +} + +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) { + + 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; + + 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 /* Silicon Labs apparently doesn't provide for setting of mfg desc */ + { + 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; +} + +/* + * 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; + } + + 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); + + tty_encode_baud_rate(port->tty, baud, baud); + cflag = port->tty->termios->c_cflag; + + 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 ktermios *old_termios) +{ + unsigned int cflag, old_cflag; + 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; + } + port->tty->termios->c_cflag &= ~CMSPAR; + + cflag = port->tty->termios->c_cflag; + old_cflag = old_termios->c_cflag; + baud = tty_get_baud_rate(port->tty); + + /* If the baud rate is to be updated*/ + if (baud != tty_termios_baud_rate(old_termios)) { + switch (baud) { + case 0: + case 600: + case 1200: + case 1800: + case 2400: + case 4800: + case 7200: + case 9600: + case 14400: + case 19200: + case 28800: + case 38400: + case 55854: + case 57600: + case 115200: + case 127117: + case 230400: + case 460800: + case 921600: + case 3686400: + break; + default: + baud = 9600; + 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"); + baud = tty_termios_baud_rate(old_termios); + } + } + } + /* Report back the resulting baud rate */ + tty_encode_baud_rate(port->tty, baud, baud); + + /* 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, "cp210x 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); +} + +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) { + cp2101_cleanup(serial->port[i]); + } +} + +static int __init cp2101_init (void) +{ + int retval; + + retval = usb_serial_register(&cp2101_device); + if (retval) + return retval; /* Failed to register */ + + retval = usb_register(&cp2101_driver); + if (retval) { + /* Failed to register */ + usb_serial_deregister(&cp2101_device); + return retval; + } + + /* Success */ + info(DRIVER_DESC " " DRIVER_VERSION); + return 0; +} + +static void __exit cp2101_exit (void) +{ + usb_deregister (&cp2101_driver); + usb_serial_deregister (&cp2101_device); +} + +module_init(cp2101_init); +module_exit(cp2101_exit); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Enable verbose debugging messages");