OpenCloudOS-Kernel/drivers/usb/serial/cp210x.c

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/*
* Silicon Laboratories CP210x 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
*
*/
#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/moduleparam.h>
#include <linux/usb.h>
#include <linux/uaccess.h>
#include <linux/usb/serial.h>
#define DRIVER_DESC "Silicon Labs CP210x RS232 serial adaptor driver"
/*
* Function Prototypes
*/
static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *);
static void cp210x_close(struct usb_serial_port *);
static void cp210x_get_termios(struct tty_struct *, struct usb_serial_port *);
static void cp210x_get_termios_port(struct usb_serial_port *port,
unsigned int *cflagp, unsigned int *baudp);
static void cp210x_change_speed(struct tty_struct *, struct usb_serial_port *,
struct ktermios *);
static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *,
struct ktermios*);
static bool cp210x_tx_empty(struct usb_serial_port *port);
static int cp210x_tiocmget(struct tty_struct *);
static int cp210x_tiocmset(struct tty_struct *, unsigned int, unsigned int);
static int cp210x_tiocmset_port(struct usb_serial_port *port,
unsigned int, unsigned int);
static void cp210x_break_ctl(struct tty_struct *, int);
static int cp210x_port_probe(struct usb_serial_port *);
static int cp210x_port_remove(struct usb_serial_port *);
static void cp210x_dtr_rts(struct usb_serial_port *p, int on);
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */
{ USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */
{ USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */
USB: cp210x usb driver: add USB_DEVICE for Pirelli DP-L10 mobile. The Pirelli DP-L10 mobile is sold under various brand names. One, already supported by cp210x, is the T-COM TC300. Here is the lsusb for that version: ------------------------------------------------------------------- Bus 001 Device 002: ID 0489:e000 Foxconn / Hon Hai T-Com TC 300 Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0489 Foxconn / Hon Hai idProduct 0xe000 T-Com TC 300 bcdDevice 1.00 iManufacturer 1 Silicon Labs iProduct 2 TC 300 iSerial 3 0001 [snip] --------------------------------------------------------------------------- However the native Pirelli DP-L10 is not supported: ------------------------------------------------------------------ Bus 001 Device 003: ID 0489:e003 Foxconn / Hon Hai Pirelli DP-L10 Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0489 Foxconn / Hon Hai idProduct 0xe003 Pirelli DP-L10 bcdDevice 1.00 iManufacturer 1 Silicon Labs iProduct 2 DP-L10 iSerial 3 0001 [snip] ------------------------------------------------------------------------- All that is required is an extra USB_DEVICE entry: { USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM +Mobile */ The patch adds that entry. Tested under 2.6.36-rc2 from git. Signed-off-by: A E Lawrence <lawrence_a_e@ntlworld.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-30 04:51:52 +08:00
{ USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */
{ USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */
{ USB_DEVICE(0x0846, 0x1100) }, /* NetGear Managed Switch M4100 series, M5300 series, M7100 series */
{ USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */
{ USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */
{ USB_DEVICE(0x0908, 0x01FF) }, /* Siemens RUGGEDCOM USB Serial Console */
{ USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */
{ USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */
{ USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */
{ USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */
{ USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */
{ USB_DEVICE(0x0FDE, 0xCA05) }, /* OWL Wireless Electricity Monitor CM-160 */
{ 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, 0x0F91) }, /* Vstabi */
{ USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */
{ USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */
{ USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */
{ USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */
{ USB_DEVICE(0x10C4, 0x8044) }, /* Cygnal Debug Adapter */
{ USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */
{ USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */
{ USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */
{ USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */
{ USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */
{ USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */
{ USB_DEVICE(0x10C4, 0x80C4) }, /* Cygnal Integrated Products, Inc., Optris infrared thermometer */
{ 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, 0x813F) }, /* Tams Master Easy Control */
{ USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */
{ USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */
{ USB_DEVICE(0x2405, 0x0003) }, /* West Mountain Radio RIGblaster Advantage */
{ USB_DEVICE(0x10C4, 0x8156) }, /* B&G H3000 link cable */
{ USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */
{ USB_DEVICE(0x10C4, 0x815F) }, /* Timewave HamLinkUSB */
{ USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */
{ USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */
{ USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */
{ USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */
{ USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */
{ USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */
{ USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */
{ USB_DEVICE(0x10C4, 0x81D7) }, /* IAI Corp. RCB-CV-USB USB to RS485 Adaptor */
{ USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */
{ USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */
{ USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */
{ USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */
{ 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 demonstration module */
{ USB_DEVICE(0x10C4, 0x8281) }, /* Nanotec Plug & Drive */
{ USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */
{ USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */
{ USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */
{ USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */
{ USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */
{ USB_DEVICE(0x10C4, 0x83D8) }, /* DekTec DTA Plus VHF/UHF Booster/Attenuator */
{ USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */
{ USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */
{ USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */
{ USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */
{ USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */
{ USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */
{ USB_DEVICE(0x10C4, 0x85F8) }, /* Virtenio Preon32 */
{ USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */
{ USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */
{ USB_DEVICE(0x10C4, 0x8856) }, /* CEL EM357 ZigBee USB Stick - LR */
{ USB_DEVICE(0x10C4, 0x8857) }, /* CEL EM357 ZigBee USB Stick */
{ USB_DEVICE(0x10C4, 0x88A4) }, /* MMB Networks ZigBee USB Device */
{ USB_DEVICE(0x10C4, 0x88A5) }, /* Planet Innovation Ingeni ZigBee USB Device */
{ USB_DEVICE(0x10C4, 0x8946) }, /* Ketra N1 Wireless Interface */
{ USB_DEVICE(0x10C4, 0x8977) }, /* CEL MeshWorks DevKit Device */
{ USB_DEVICE(0x10C4, 0x8998) }, /* KCF Technologies PRN */
{ USB_DEVICE(0x10C4, 0x8A2A) }, /* HubZ dual ZigBee and Z-Wave dongle */
{ USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
{ USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
{ USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */
{ USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */
{ 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(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */
{ USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */
{ USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */
{ USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */
{ USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */
{ USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */
{ USB_DEVICE(0x166A, 0x0304) }, /* Clipsal 5000CT2 C-Bus Black and White Touchscreen */
{ USB_DEVICE(0x166A, 0x0305) }, /* Clipsal C-5000CT2 C-Bus Spectrum Colour Touchscreen */
{ USB_DEVICE(0x166A, 0x0401) }, /* Clipsal L51xx C-Bus Architectural Dimmer */
{ USB_DEVICE(0x166A, 0x0101) }, /* Clipsal 5560884 C-Bus Multi-room Audio Matrix Switcher */
{ USB_DEVICE(0x16C0, 0x09B0) }, /* Lunatico Seletek */
{ USB_DEVICE(0x16C0, 0x09B1) }, /* Lunatico Seletek */
{ USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */
{ USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */
{ USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */
{ USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */
{ USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */
{ USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */
{ USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */
{ USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */
{ USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */
{ USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */
{ USB_DEVICE(0x18EF, 0xE025) }, /* ELV Marble Sound Board 1 */
{ USB_DEVICE(0x1901, 0x0190) }, /* GE B850 CP2105 Recorder interface */
{ USB_DEVICE(0x1901, 0x0193) }, /* GE B650 CP2104 PMC interface */
{ USB_DEVICE(0x1901, 0x0194) }, /* GE Healthcare Remote Alarm Box */
{ USB_DEVICE(0x19CF, 0x3000) }, /* Parrot NMEA GPS Flight Recorder */
{ USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */
{ USB_DEVICE(0x1B1C, 0x1C00) }, /* Corsair USB Dongle */
{ USB_DEVICE(0x1BA4, 0x0002) }, /* Silicon Labs 358x factory default */
{ USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */
{ USB_DEVICE(0x1D6F, 0x0010) }, /* Seluxit ApS RF Dongle */
{ USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */
{ USB_DEVICE(0x1E29, 0x0501) }, /* Festo CMSP */
{ USB_DEVICE(0x1FB9, 0x0100) }, /* Lake Shore Model 121 Current Source */
{ USB_DEVICE(0x1FB9, 0x0200) }, /* Lake Shore Model 218A Temperature Monitor */
{ USB_DEVICE(0x1FB9, 0x0201) }, /* Lake Shore Model 219 Temperature Monitor */
{ USB_DEVICE(0x1FB9, 0x0202) }, /* Lake Shore Model 233 Temperature Transmitter */
{ USB_DEVICE(0x1FB9, 0x0203) }, /* Lake Shore Model 235 Temperature Transmitter */
{ USB_DEVICE(0x1FB9, 0x0300) }, /* Lake Shore Model 335 Temperature Controller */
{ USB_DEVICE(0x1FB9, 0x0301) }, /* Lake Shore Model 336 Temperature Controller */
{ USB_DEVICE(0x1FB9, 0x0302) }, /* Lake Shore Model 350 Temperature Controller */
{ USB_DEVICE(0x1FB9, 0x0303) }, /* Lake Shore Model 371 AC Bridge */
{ USB_DEVICE(0x1FB9, 0x0400) }, /* Lake Shore Model 411 Handheld Gaussmeter */
{ USB_DEVICE(0x1FB9, 0x0401) }, /* Lake Shore Model 425 Gaussmeter */
{ USB_DEVICE(0x1FB9, 0x0402) }, /* Lake Shore Model 455A Gaussmeter */
{ USB_DEVICE(0x1FB9, 0x0403) }, /* Lake Shore Model 475A Gaussmeter */
{ USB_DEVICE(0x1FB9, 0x0404) }, /* Lake Shore Model 465 Three Axis Gaussmeter */
{ USB_DEVICE(0x1FB9, 0x0600) }, /* Lake Shore Model 625A Superconducting MPS */
{ USB_DEVICE(0x1FB9, 0x0601) }, /* Lake Shore Model 642A Magnet Power Supply */
{ USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */
{ USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */
{ USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */
{ USB_DEVICE(0x2626, 0xEA60) }, /* Aruba Networks 7xxx USB Serial Console */
{ USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */
{ USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */
{ USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */
{ USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */
{ } /* Terminating Entry */
};
MODULE_DEVICE_TABLE(usb, id_table);
struct cp210x_port_private {
__u8 bInterfaceNumber;
bool has_swapped_line_ctl;
};
static struct usb_serial_driver cp210x_device = {
.driver = {
.owner = THIS_MODULE,
.name = "cp210x",
},
.id_table = id_table,
.num_ports = 1,
.bulk_in_size = 256,
.bulk_out_size = 256,
.open = cp210x_open,
.close = cp210x_close,
.break_ctl = cp210x_break_ctl,
.set_termios = cp210x_set_termios,
.tx_empty = cp210x_tx_empty,
.tiocmget = cp210x_tiocmget,
.tiocmset = cp210x_tiocmset,
.port_probe = cp210x_port_probe,
.port_remove = cp210x_port_remove,
.dtr_rts = cp210x_dtr_rts
};
static struct usb_serial_driver * const serial_drivers[] = {
&cp210x_device, NULL
};
/* Config request types */
#define REQTYPE_HOST_TO_INTERFACE 0x41
#define REQTYPE_INTERFACE_TO_HOST 0xc1
#define REQTYPE_HOST_TO_DEVICE 0x40
#define REQTYPE_DEVICE_TO_HOST 0xc0
/* Config request codes */
#define CP210X_IFC_ENABLE 0x00
#define CP210X_SET_BAUDDIV 0x01
#define CP210X_GET_BAUDDIV 0x02
#define CP210X_SET_LINE_CTL 0x03
#define CP210X_GET_LINE_CTL 0x04
#define CP210X_SET_BREAK 0x05
#define CP210X_IMM_CHAR 0x06
#define CP210X_SET_MHS 0x07
#define CP210X_GET_MDMSTS 0x08
#define CP210X_SET_XON 0x09
#define CP210X_SET_XOFF 0x0A
#define CP210X_SET_EVENTMASK 0x0B
#define CP210X_GET_EVENTMASK 0x0C
#define CP210X_SET_CHAR 0x0D
#define CP210X_GET_CHARS 0x0E
#define CP210X_GET_PROPS 0x0F
#define CP210X_GET_COMM_STATUS 0x10
#define CP210X_RESET 0x11
#define CP210X_PURGE 0x12
#define CP210X_SET_FLOW 0x13
#define CP210X_GET_FLOW 0x14
#define CP210X_EMBED_EVENTS 0x15
#define CP210X_GET_EVENTSTATE 0x16
#define CP210X_SET_CHARS 0x19
USB: cp210x: fix CP2104 baudrate usage This fix changes the way baudrates are set on the CP210x devices from Silicon Labs. The CP2101/2/3 will respond to both a GET/SET_BAUDDIV command, and GET/SET_BAUDRATE command, while CP2104 and higher devices only respond to GET/SET_BAUDRATE. The current cp210x.ko driver in kernel version 3.2.0 only implements the GET/SET_BAUDDIV command. This patch implements the two new codes for the GET/SET_BAUDRATE commands. Then there is a change in the way that the baudrate is assigned or retrieved. This is done according to the CP210x USB specification in AN571. This document can be found here: http://www.silabs.com/pages/DownloadDoc.aspx?FILEURL=Support%20Documents/TechnicalDocs/AN571.pdf&src=DocumentationWebPart Sections 5.3/5.4 describe the USB packets for the old baudrate method. Sections 5.5/5.6 describe the USB packets for the new method. This patch also implements the new request scheme, and eliminates the unnecessary baudrate calculations since it uses the "actual baudrate" method. This patch solves the problem reported for the CP2104 in bug 42586, and also keeps support for all other devices (CP2101/2/3). This patchfile is also attached to the bug report on bugzilla.kernel.org. This patch has been developed and test on the 3.2.0 mainline kernel version under Ubuntu 10.11. Signed-off-by: Preston Fick <preston.fick@silabs.com> [duplicate patch also sent by Johan - gregkh] Signed-off-by: Johan Hovold <jhovold@gmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-17 08:14:09 +08:00
#define CP210X_GET_BAUDRATE 0x1D
#define CP210X_SET_BAUDRATE 0x1E
/* CP210X_IFC_ENABLE */
#define UART_ENABLE 0x0001
#define UART_DISABLE 0x0000
/* CP210X_(SET|GET)_BAUDDIV */
#define BAUD_RATE_GEN_FREQ 0x384000
/* CP210X_(SET|GET)_LINE_CTL */
#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
/* CP210X_SET_BREAK */
#define BREAK_ON 0x0001
#define BREAK_OFF 0x0000
/* CP210X_(SET_MHS|GET_MDMSTS) */
#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
/* CP210X_GET_COMM_STATUS returns these 0x13 bytes */
struct cp210x_comm_status {
__le32 ulErrors;
__le32 ulHoldReasons;
__le32 ulAmountInInQueue;
__le32 ulAmountInOutQueue;
u8 bEofReceived;
u8 bWaitForImmediate;
u8 bReserved;
} __packed;
/*
* CP210X_PURGE - 16 bits passed in wValue of USB request.
* SiLabs app note AN571 gives a strange description of the 4 bits:
* bit 0 or bit 2 clears the transmit queue and 1 or 3 receive.
* writing 1 to all, however, purges cp2108 well enough to avoid the hang.
*/
#define PURGE_ALL 0x000f
/*
* Reads a variable-sized block of CP210X_ registers, identified by req.
* Returns data into buf in native USB byte order.
*/
static int cp210x_read_reg_block(struct usb_serial_port *port, u8 req,
void *buf, int bufsize)
{
struct usb_serial *serial = port->serial;
struct cp210x_port_private *port_priv = usb_get_serial_port_data(port);
void *dmabuf;
int result;
dmabuf = kmalloc(bufsize, GFP_KERNEL);
if (!dmabuf) {
/*
* FIXME Some callers don't bother to check for error,
* at least give them consistent junk until they are fixed
*/
memset(buf, 0, bufsize);
return -ENOMEM;
}
result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
req, REQTYPE_INTERFACE_TO_HOST, 0,
port_priv->bInterfaceNumber, dmabuf, bufsize,
USB_CTRL_SET_TIMEOUT);
if (result == bufsize) {
memcpy(buf, dmabuf, bufsize);
result = 0;
} else {
dev_err(&port->dev, "failed get req 0x%x size %d status: %d\n",
req, bufsize, result);
if (result >= 0)
result = -EPROTO;
/*
* FIXME Some callers don't bother to check for error,
* at least give them consistent junk until they are fixed
*/
memset(buf, 0, bufsize);
}
kfree(dmabuf);
return result;
}
/*
* Reads any 32-bit CP210X_ register identified by req.
*/
static int cp210x_read_u32_reg(struct usb_serial_port *port, u8 req, u32 *val)
{
__le32 le32_val;
int err;
err = cp210x_read_reg_block(port, req, &le32_val, sizeof(le32_val));
if (err) {
/*
* FIXME Some callers don't bother to check for error,
* at least give them consistent junk until they are fixed
*/
*val = 0;
return err;
}
*val = le32_to_cpu(le32_val);
return 0;
}
/*
* Reads any 16-bit CP210X_ register identified by req.
*/
static int cp210x_read_u16_reg(struct usb_serial_port *port, u8 req, u16 *val)
{
__le16 le16_val;
int err;
err = cp210x_read_reg_block(port, req, &le16_val, sizeof(le16_val));
if (err)
return err;
*val = le16_to_cpu(le16_val);
return 0;
}
/*
* Reads any 8-bit CP210X_ register identified by req.
*/
static int cp210x_read_u8_reg(struct usb_serial_port *port, u8 req, u8 *val)
{
return cp210x_read_reg_block(port, req, val, sizeof(*val));
}
/*
* Writes any 16-bit CP210X_ register (req) whose value is passed
* entirely in the wValue field of the USB request.
*/
static int cp210x_write_u16_reg(struct usb_serial_port *port, u8 req, u16 val)
{
struct usb_serial *serial = port->serial;
struct cp210x_port_private *port_priv = usb_get_serial_port_data(port);
int result;
result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
req, REQTYPE_HOST_TO_INTERFACE, val,
port_priv->bInterfaceNumber, NULL, 0,
USB_CTRL_SET_TIMEOUT);
if (result < 0) {
dev_err(&port->dev, "failed set request 0x%x status: %d\n",
req, result);
}
return result;
}
/*
* Writes a variable-sized block of CP210X_ registers, identified by req.
* Data in buf must be in native USB byte order.
*/
static int cp210x_write_reg_block(struct usb_serial_port *port, u8 req,
void *buf, int bufsize)
{
struct usb_serial *serial = port->serial;
struct cp210x_port_private *port_priv = usb_get_serial_port_data(port);
void *dmabuf;
int result;
dmabuf = kmalloc(bufsize, GFP_KERNEL);
if (!dmabuf)
return -ENOMEM;
memcpy(dmabuf, buf, bufsize);
result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
req, REQTYPE_HOST_TO_INTERFACE, 0,
port_priv->bInterfaceNumber, dmabuf, bufsize,
USB_CTRL_SET_TIMEOUT);
kfree(dmabuf);
if (result == bufsize) {
result = 0;
} else {
dev_err(&port->dev, "failed set req 0x%x size %d status: %d\n",
req, bufsize, result);
if (result >= 0)
result = -EPROTO;
}
return result;
}
/*
* Writes any 32-bit CP210X_ register identified by req.
*/
static int cp210x_write_u32_reg(struct usb_serial_port *port, u8 req, u32 val)
{
__le32 le32_val;
le32_val = cpu_to_le32(val);
return cp210x_write_reg_block(port, req, &le32_val, sizeof(le32_val));
}
/*
* Detect CP2108 GET_LINE_CTL bug and activate workaround.
* Write a known good value 0x800, read it back.
* If it comes back swapped the bug is detected.
* Preserve the original register value.
*/
static int cp210x_detect_swapped_line_ctl(struct usb_serial_port *port)
{
struct cp210x_port_private *port_priv = usb_get_serial_port_data(port);
u16 line_ctl_save;
u16 line_ctl_test;
int err;
err = cp210x_read_u16_reg(port, CP210X_GET_LINE_CTL, &line_ctl_save);
if (err)
return err;
err = cp210x_write_u16_reg(port, CP210X_SET_LINE_CTL, 0x800);
if (err)
return err;
err = cp210x_read_u16_reg(port, CP210X_GET_LINE_CTL, &line_ctl_test);
if (err)
return err;
if (line_ctl_test == 8) {
port_priv->has_swapped_line_ctl = true;
line_ctl_save = swab16(line_ctl_save);
}
return cp210x_write_u16_reg(port, CP210X_SET_LINE_CTL, line_ctl_save);
}
/*
* Must always be called instead of cp210x_read_u16_reg(CP210X_GET_LINE_CTL)
* to workaround cp2108 bug and get correct value.
*/
static int cp210x_get_line_ctl(struct usb_serial_port *port, u16 *ctl)
{
struct cp210x_port_private *port_priv = usb_get_serial_port_data(port);
int err;
err = cp210x_read_u16_reg(port, CP210X_GET_LINE_CTL, ctl);
if (err)
return err;
/* Workaround swapped bytes in 16-bit value from CP210X_GET_LINE_CTL */
if (port_priv->has_swapped_line_ctl)
*ctl = swab16(*ctl);
return 0;
}
/*
* cp210x_quantise_baudrate
* Quantises the baud rate as per AN205 Table 1
*/
static unsigned int cp210x_quantise_baudrate(unsigned int baud)
{
if (baud <= 300)
baud = 300;
else if (baud <= 600) baud = 600;
else if (baud <= 1200) baud = 1200;
else if (baud <= 1800) baud = 1800;
else if (baud <= 2400) baud = 2400;
else if (baud <= 4000) baud = 4000;
else if (baud <= 4803) baud = 4800;
else if (baud <= 7207) baud = 7200;
else if (baud <= 9612) baud = 9600;
else if (baud <= 14428) baud = 14400;
else if (baud <= 16062) baud = 16000;
else if (baud <= 19250) baud = 19200;
else if (baud <= 28912) baud = 28800;
else if (baud <= 38601) baud = 38400;
else if (baud <= 51558) baud = 51200;
else if (baud <= 56280) baud = 56000;
else if (baud <= 58053) baud = 57600;
else if (baud <= 64111) baud = 64000;
else if (baud <= 77608) baud = 76800;
else if (baud <= 117028) baud = 115200;
else if (baud <= 129347) baud = 128000;
else if (baud <= 156868) baud = 153600;
else if (baud <= 237832) baud = 230400;
else if (baud <= 254234) baud = 250000;
else if (baud <= 273066) baud = 256000;
else if (baud <= 491520) baud = 460800;
else if (baud <= 567138) baud = 500000;
else if (baud <= 670254) baud = 576000;
else if (baud < 1000000)
baud = 921600;
else if (baud > 2000000)
baud = 2000000;
return baud;
}
static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port)
{
int result;
result = cp210x_write_u16_reg(port, CP210X_IFC_ENABLE, UART_ENABLE);
if (result) {
dev_err(&port->dev, "%s - Unable to enable UART\n", __func__);
return result;
}
/* Configure the termios structure */
cp210x_get_termios(tty, port);
/* The baud rate must be initialised on cp2104 */
if (tty)
cp210x_change_speed(tty, port, NULL);
return usb_serial_generic_open(tty, port);
}
static void cp210x_close(struct usb_serial_port *port)
{
usb_serial_generic_close(port);
/* Clear both queues; cp2108 needs this to avoid an occasional hang */
cp210x_write_u16_reg(port, CP210X_PURGE, PURGE_ALL);
cp210x_write_u16_reg(port, CP210X_IFC_ENABLE, UART_DISABLE);
}
/*
* Read how many bytes are waiting in the TX queue.
*/
static int cp210x_get_tx_queue_byte_count(struct usb_serial_port *port,
u32 *count)
{
struct usb_serial *serial = port->serial;
struct cp210x_port_private *port_priv = usb_get_serial_port_data(port);
struct cp210x_comm_status *sts;
int result;
sts = kmalloc(sizeof(*sts), GFP_KERNEL);
if (!sts)
return -ENOMEM;
result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
CP210X_GET_COMM_STATUS, REQTYPE_INTERFACE_TO_HOST,
0, port_priv->bInterfaceNumber, sts, sizeof(*sts),
USB_CTRL_GET_TIMEOUT);
if (result == sizeof(*sts)) {
*count = le32_to_cpu(sts->ulAmountInOutQueue);
result = 0;
} else {
dev_err(&port->dev, "failed to get comm status: %d\n", result);
if (result >= 0)
result = -EPROTO;
}
kfree(sts);
return result;
}
static bool cp210x_tx_empty(struct usb_serial_port *port)
{
int err;
u32 count;
err = cp210x_get_tx_queue_byte_count(port, &count);
if (err)
return true;
return !count;
}
/*
* cp210x_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 cp210x_get_termios(struct tty_struct *tty,
struct usb_serial_port *port)
{
unsigned int baud;
if (tty) {
cp210x_get_termios_port(tty->driver_data,
&tty->termios.c_cflag, &baud);
tty_encode_baud_rate(tty, baud, baud);
} else {
unsigned int cflag;
cflag = 0;
cp210x_get_termios_port(port, &cflag, &baud);
}
}
/*
* cp210x_get_termios_port
* This is the heart of cp210x_get_termios which always uses a &usb_serial_port.
*/
static void cp210x_get_termios_port(struct usb_serial_port *port,
unsigned int *cflagp, unsigned int *baudp)
{
struct device *dev = &port->dev;
unsigned int cflag;
u8 modem_ctl[16];
u32 baud;
u16 bits;
cp210x_read_u32_reg(port, CP210X_GET_BAUDRATE, &baud);
dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
*baudp = baud;
cflag = *cflagp;
cp210x_get_line_ctl(port, &bits);
cflag &= ~CSIZE;
switch (bits & BITS_DATA_MASK) {
case BITS_DATA_5:
dev_dbg(dev, "%s - data bits = 5\n", __func__);
cflag |= CS5;
break;
case BITS_DATA_6:
dev_dbg(dev, "%s - data bits = 6\n", __func__);
cflag |= CS6;
break;
case BITS_DATA_7:
dev_dbg(dev, "%s - data bits = 7\n", __func__);
cflag |= CS7;
break;
case BITS_DATA_8:
dev_dbg(dev, "%s - data bits = 8\n", __func__);
cflag |= CS8;
break;
case BITS_DATA_9:
dev_dbg(dev, "%s - data bits = 9 (not supported, using 8 data bits)\n", __func__);
cflag |= CS8;
bits &= ~BITS_DATA_MASK;
bits |= BITS_DATA_8;
cp210x_write_u16_reg(port, CP210X_SET_LINE_CTL, bits);
break;
default:
dev_dbg(dev, "%s - Unknown number of data bits, using 8\n", __func__);
cflag |= CS8;
bits &= ~BITS_DATA_MASK;
bits |= BITS_DATA_8;
cp210x_write_u16_reg(port, CP210X_SET_LINE_CTL, bits);
break;
}
switch (bits & BITS_PARITY_MASK) {
case BITS_PARITY_NONE:
dev_dbg(dev, "%s - parity = NONE\n", __func__);
cflag &= ~PARENB;
break;
case BITS_PARITY_ODD:
dev_dbg(dev, "%s - parity = ODD\n", __func__);
cflag |= (PARENB|PARODD);
break;
case BITS_PARITY_EVEN:
dev_dbg(dev, "%s - parity = EVEN\n", __func__);
cflag &= ~PARODD;
cflag |= PARENB;
break;
case BITS_PARITY_MARK:
dev_dbg(dev, "%s - parity = MARK\n", __func__);
cflag |= (PARENB|PARODD|CMSPAR);
break;
case BITS_PARITY_SPACE:
dev_dbg(dev, "%s - parity = SPACE\n", __func__);
cflag &= ~PARODD;
cflag |= (PARENB|CMSPAR);
break;
default:
dev_dbg(dev, "%s - Unknown parity mode, disabling parity\n", __func__);
cflag &= ~PARENB;
bits &= ~BITS_PARITY_MASK;
cp210x_write_u16_reg(port, CP210X_SET_LINE_CTL, bits);
break;
}
cflag &= ~CSTOPB;
switch (bits & BITS_STOP_MASK) {
case BITS_STOP_1:
dev_dbg(dev, "%s - stop bits = 1\n", __func__);
break;
case BITS_STOP_1_5:
dev_dbg(dev, "%s - stop bits = 1.5 (not supported, using 1 stop bit)\n", __func__);
bits &= ~BITS_STOP_MASK;
cp210x_write_u16_reg(port, CP210X_SET_LINE_CTL, bits);
break;
case BITS_STOP_2:
dev_dbg(dev, "%s - stop bits = 2\n", __func__);
cflag |= CSTOPB;
break;
default:
dev_dbg(dev, "%s - Unknown number of stop bits, using 1 stop bit\n", __func__);
bits &= ~BITS_STOP_MASK;
cp210x_write_u16_reg(port, CP210X_SET_LINE_CTL, bits);
break;
}
cp210x_read_reg_block(port, CP210X_GET_FLOW, modem_ctl,
sizeof(modem_ctl));
if (modem_ctl[0] & 0x08) {
dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__);
cflag |= CRTSCTS;
} else {
dev_dbg(dev, "%s - flow control = NONE\n", __func__);
cflag &= ~CRTSCTS;
}
*cflagp = cflag;
}
/*
* CP2101 supports the following baud rates:
*
* 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800,
* 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600
*
* CP2102 and CP2103 support the following additional rates:
*
* 4000, 16000, 51200, 64000, 76800, 153600, 250000, 256000, 500000,
* 576000
*
* The device will map a requested rate to a supported one, but the result
* of requests for rates greater than 1053257 is undefined (see AN205).
*
* CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud,
* respectively, with an error less than 1%. The actual rates are determined
* by
*
* div = round(freq / (2 x prescale x request))
* actual = freq / (2 x prescale x div)
*
* For CP2104 and CP2105 freq is 48Mhz and prescale is 4 for request <= 365bps
* or 1 otherwise.
* For CP2110 freq is 24Mhz and prescale is 4 for request <= 300bps or 1
* otherwise.
*/
static void cp210x_change_speed(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
u32 baud;
baud = tty->termios.c_ospeed;
/* This maps the requested rate to a rate valid on cp2102 or cp2103,
* or to an arbitrary rate in [1M,2M].
*
* NOTE: B0 is not implemented.
*/
baud = cp210x_quantise_baudrate(baud);
dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud);
if (cp210x_write_u32_reg(port, CP210X_SET_BAUDRATE, baud)) {
dev_warn(&port->dev, "failed to set baud rate to %u\n", baud);
if (old_termios)
baud = old_termios->c_ospeed;
else
baud = 9600;
}
tty_encode_baud_rate(tty, baud, baud);
}
static void cp210x_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
struct device *dev = &port->dev;
unsigned int cflag, old_cflag;
u16 bits;
u8 modem_ctl[16];
cflag = tty->termios.c_cflag;
old_cflag = old_termios->c_cflag;
if (tty->termios.c_ospeed != old_termios->c_ospeed)
cp210x_change_speed(tty, port, old_termios);
/* If the number of data bits is to be updated */
if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
cp210x_get_line_ctl(port, &bits);
bits &= ~BITS_DATA_MASK;
switch (cflag & CSIZE) {
case CS5:
bits |= BITS_DATA_5;
dev_dbg(dev, "%s - data bits = 5\n", __func__);
break;
case CS6:
bits |= BITS_DATA_6;
dev_dbg(dev, "%s - data bits = 6\n", __func__);
break;
case CS7:
bits |= BITS_DATA_7;
dev_dbg(dev, "%s - data bits = 7\n", __func__);
break;
case CS8:
bits |= BITS_DATA_8;
dev_dbg(dev, "%s - data bits = 8\n", __func__);
break;
/*case CS9:
bits |= BITS_DATA_9;
dev_dbg(dev, "%s - data bits = 9\n", __func__);
break;*/
default:
dev_dbg(dev, "cp210x driver does not support the number of bits requested, using 8 bit mode\n");
bits |= BITS_DATA_8;
break;
}
if (cp210x_write_u16_reg(port, CP210X_SET_LINE_CTL, bits))
dev_dbg(dev, "Number of data bits requested not supported by device\n");
}
if ((cflag & (PARENB|PARODD|CMSPAR)) !=
(old_cflag & (PARENB|PARODD|CMSPAR))) {
cp210x_get_line_ctl(port, &bits);
bits &= ~BITS_PARITY_MASK;
if (cflag & PARENB) {
if (cflag & CMSPAR) {
if (cflag & PARODD) {
bits |= BITS_PARITY_MARK;
dev_dbg(dev, "%s - parity = MARK\n", __func__);
} else {
bits |= BITS_PARITY_SPACE;
dev_dbg(dev, "%s - parity = SPACE\n", __func__);
}
} else {
if (cflag & PARODD) {
bits |= BITS_PARITY_ODD;
dev_dbg(dev, "%s - parity = ODD\n", __func__);
} else {
bits |= BITS_PARITY_EVEN;
dev_dbg(dev, "%s - parity = EVEN\n", __func__);
}
}
}
if (cp210x_write_u16_reg(port, CP210X_SET_LINE_CTL, bits))
dev_dbg(dev, "Parity mode not supported by device\n");
}
if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) {
cp210x_get_line_ctl(port, &bits);
bits &= ~BITS_STOP_MASK;
if (cflag & CSTOPB) {
bits |= BITS_STOP_2;
dev_dbg(dev, "%s - stop bits = 2\n", __func__);
} else {
bits |= BITS_STOP_1;
dev_dbg(dev, "%s - stop bits = 1\n", __func__);
}
if (cp210x_write_u16_reg(port, CP210X_SET_LINE_CTL, bits))
dev_dbg(dev, "Number of stop bits requested not supported by device\n");
}
if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
/* Only bytes 0, 4 and 7 out of first 8 have functional bits */
cp210x_read_reg_block(port, CP210X_GET_FLOW, modem_ctl,
sizeof(modem_ctl));
dev_dbg(dev, "%s - read modem controls = %02x .. .. .. %02x .. .. %02x\n",
__func__, modem_ctl[0], modem_ctl[4], modem_ctl[7]);
if (cflag & CRTSCTS) {
modem_ctl[0] &= ~0x7B;
modem_ctl[0] |= 0x09;
modem_ctl[4] = 0x80;
/* FIXME - why clear reserved bits just read? */
modem_ctl[5] = 0;
modem_ctl[6] = 0;
modem_ctl[7] = 0;
dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__);
} else {
modem_ctl[0] &= ~0x7B;
modem_ctl[0] |= 0x01;
/* FIXME - OR here instead of assignment looks wrong */
modem_ctl[4] |= 0x40;
dev_dbg(dev, "%s - flow control = NONE\n", __func__);
}
dev_dbg(dev, "%s - write modem controls = %02x .. .. .. %02x .. .. %02x\n",
__func__, modem_ctl[0], modem_ctl[4], modem_ctl[7]);
cp210x_write_reg_block(port, CP210X_SET_FLOW, modem_ctl,
sizeof(modem_ctl));
}
}
static int cp210x_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear)
{
struct usb_serial_port *port = tty->driver_data;
return cp210x_tiocmset_port(port, set, clear);
}
static int cp210x_tiocmset_port(struct usb_serial_port *port,
unsigned int set, unsigned int clear)
{
u16 control = 0;
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;
}
dev_dbg(&port->dev, "%s - control = 0x%.4x\n", __func__, control);
return cp210x_write_u16_reg(port, CP210X_SET_MHS, control);
}
static void cp210x_dtr_rts(struct usb_serial_port *p, int on)
{
if (on)
cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0);
else
cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS);
}
static int cp210x_tiocmget(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
u8 control;
USB: cp2101.c fix sparse signedness mismatch warnings The get/set 2101_config helpers take an unsigned int rather than an int. It is safe to change these in each case and may even produce better code as it will be an unsigned divide rather than a signed divide in places. All other manipulation was setting/masking bits which will not be affected by the sign change. Fixes the following sparse warnings: drivers/usb/serial/cp2101.c:378:44: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:378:44: expected unsigned int *data drivers/usb/serial/cp2101.c:378:44: got int *<noident> drivers/usb/serial/cp2101.c:388:40: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:388:40: expected unsigned int *data drivers/usb/serial/cp2101.c:388:40: got int *<noident> drivers/usb/serial/cp2101.c:413:42: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:413:42: expected unsigned int *data drivers/usb/serial/cp2101.c:413:42: got int *<noident> drivers/usb/serial/cp2101.c:421:42: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:421:42: expected unsigned int *data drivers/usb/serial/cp2101.c:421:42: got int *<noident> drivers/usb/serial/cp2101.c:444:42: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:444:42: expected unsigned int *data drivers/usb/serial/cp2101.c:444:42: got int *<noident> drivers/usb/serial/cp2101.c:451:42: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:451:42: expected unsigned int *data drivers/usb/serial/cp2101.c:451:42: got int *<noident> drivers/usb/serial/cp2101.c:458:42: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:458:42: expected unsigned int *data drivers/usb/serial/cp2101.c:458:42: got int *<noident> drivers/usb/serial/cp2101.c:471:42: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:471:42: expected unsigned int *data drivers/usb/serial/cp2101.c:471:42: got int *<noident> drivers/usb/serial/cp2101.c:481:42: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:481:42: expected unsigned int *data drivers/usb/serial/cp2101.c:481:42: got int *<noident> drivers/usb/serial/cp2101.c:561:41: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:561:41: expected unsigned int *data drivers/usb/serial/cp2101.c:561:41: got int *<noident> drivers/usb/serial/cp2101.c:591:45: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:591:45: expected unsigned int *data drivers/usb/serial/cp2101.c:591:45: got int *<noident> drivers/usb/serial/cp2101.c:597:41: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:597:41: expected unsigned int *data drivers/usb/serial/cp2101.c:597:41: got int *<noident> drivers/usb/serial/cp2101.c:608:45: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:608:45: expected unsigned int *data drivers/usb/serial/cp2101.c:608:45: got int *<noident> drivers/usb/serial/cp2101.c:614:41: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:614:41: expected unsigned int *data drivers/usb/serial/cp2101.c:614:41: got int *<noident> drivers/usb/serial/cp2101.c:623:45: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:623:45: expected unsigned int *data drivers/usb/serial/cp2101.c:623:45: got int *<noident> drivers/usb/serial/cp2101.c:680:50: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:680:50: expected unsigned int *data drivers/usb/serial/cp2101.c:680:50: got int *<noident> drivers/usb/serial/cp2101.c:690:43: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:690:43: expected unsigned int *data drivers/usb/serial/cp2101.c:690:43: got int *<noident> drivers/usb/serial/cp2101.c:715:41: warning: incorrect type in argument 3 (different signedness) drivers/usb/serial/cp2101.c:715:41: expected unsigned int *data drivers/usb/serial/cp2101.c:715:41: got int *<noident> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-05-31 01:29:55 +08:00
int result;
cp210x_read_u8_reg(port, CP210X_GET_MDMSTS, &control);
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);
dev_dbg(&port->dev, "%s - control = 0x%.2x\n", __func__, control);
return result;
}
static void cp210x_break_ctl(struct tty_struct *tty, int break_state)
{
struct usb_serial_port *port = tty->driver_data;
u16 state;
if (break_state == 0)
state = BREAK_OFF;
else
state = BREAK_ON;
dev_dbg(&port->dev, "%s - turning break %s\n", __func__,
state == BREAK_OFF ? "off" : "on");
cp210x_write_u16_reg(port, CP210X_SET_BREAK, state);
}
static int cp210x_port_probe(struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
struct usb_host_interface *cur_altsetting;
struct cp210x_port_private *port_priv;
int ret;
port_priv = kzalloc(sizeof(*port_priv), GFP_KERNEL);
if (!port_priv)
return -ENOMEM;
cur_altsetting = serial->interface->cur_altsetting;
port_priv->bInterfaceNumber = cur_altsetting->desc.bInterfaceNumber;
usb_set_serial_port_data(port, port_priv);
ret = cp210x_detect_swapped_line_ctl(port);
if (ret) {
kfree(port_priv);
return ret;
}
return 0;
}
static int cp210x_port_remove(struct usb_serial_port *port)
{
struct cp210x_port_private *port_priv;
port_priv = usb_get_serial_port_data(port);
kfree(port_priv);
return 0;
}
USB: serial: rework usb_serial_register/deregister_drivers() This reworks the usb_serial_register_drivers() and usb_serial_deregister_drivers() to not need a pointer to a struct usb_driver anymore. The usb_driver structure is now created dynamically and registered and unregistered as needed. This saves lines of code in each usb-serial driver. All in-kernel users of these functions were also fixed up at this time. The pl2303 driver was tested that everything worked properly. Thanks for the idea to do this from Alan Stern. Cc: Adhir Ramjiawan <adhirramjiawan0@gmail.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Al Borchers <alborchers@steinerpoint.com> Cc: Aleksey Babahin <tamerlan311@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andrew Worsley <amworsley@gmail.com> Cc: Bart Hartgers <bart.hartgers@gmail.com> Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Dan Carpenter <error27@gmail.com> Cc: Dan Williams <dcbw@redhat.com> Cc: Donald Lee <donald@asix.com.tw> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Gary Brubaker <xavyer@ix.netcom.com> Cc: Jesper Juhl <jj@chaosbits.net> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Johan Hovold <jhovold@gmail.com> Cc: Julia Lawall <julia@diku.dk> Cc: Kautuk Consul <consul.kautuk@gmail.com> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Cc: Lonnie Mendez <dignome@gmail.com> Cc: Matthias Bruestle and Harald Welte <support@reiner-sct.com> Cc: Matthias Urlichs <smurf@smurf.noris.de> Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: Michal Sroczynski <msroczyn@gmail.com> Cc: "Michał Wróbel" <michal.wrobel@flytronic.pl> Cc: Oliver Neukum <oliver@neukum.name> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Berger <pberger@brimson.com> Cc: Preston Fick <preston.fick@silabs.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Rigbert Hamisch <rigbert@gmx.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Simon Arlott <simon@fire.lp0.eu> Cc: Support Department <support@connecttech.com> Cc: Thomas Tuttle <ttuttle@chromium.org> Cc: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de> Cc: Wang YanQing <Udknight@gmail.com> Cc: William Greathouse <wgreathouse@smva.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-09 06:46:14 +08:00
module_usb_serial_driver(serial_drivers, id_table);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");