6445ced867
* 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (961 commits) staging: hv: fix memory leaks staging: hv: Remove NULL check before kfree Staging: hv: Get rid of vmbus_child_dev_add() Staging: hv: Change the signature for vmbus_child_device_register() Staging: hv: Get rid of vmbus_cleanup() function Staging: hv: Get rid of vmbus_dev_rm() function Staging: hv: Change the signature for vmbus_on_isr() Staging: hv: Eliminate vmbus_event_dpc() Staging: hv: Get rid of the function vmbus_msg_dpc() Staging: hv: Change the signature for vmbus_cleanup() Staging: hv: Simplify root device management staging: rtl8192e: Don't copy dev pointer to skb staging: rtl8192e: Pass priv to cmdpkt functions staging: rtl8192e: Pass priv to firmware download functions staging: rtl8192e: Pass priv to rtl8192_interrupt staging: rtl8192e: Pass rtl8192_priv to dm functions staging: rtl8192e: Pass ieee80211_device to callbacks staging: rtl8192e: Pass ieee80211_device to callbacks staging: rtl8192e: Pass ieee80211_device to callbacks staging: rtl8192e: Pass ieee80211_device to callbacks ...
1664 lines
42 KiB
C
1664 lines
42 KiB
C
/*
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* This code was developed for the Quatech USB line for linux, it used
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* much of the code developed by Greg Kroah-Hartman for USB serial devices
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*
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*/
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/tty.h>
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#include <linux/tty_driver.h>
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#include <linux/tty_flip.h>
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#include <linux/module.h>
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#include <linux/serial.h>
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#include <linux/usb.h>
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#include <linux/usb/serial.h>
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#include <linux/uaccess.h>
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static int debug;
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/* Version Information */
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#define DRIVER_VERSION "v2.14"
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#define DRIVER_AUTHOR "Tim Gobeli, Quatech, Inc"
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#define DRIVER_DESC "Quatech USB to Serial Driver"
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#define USB_VENDOR_ID_QUATECH 0x061d /* Quatech VID */
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#define QUATECH_SSU100 0xC020 /* SSU100 */
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#define QUATECH_SSU200 0xC030 /* SSU200 */
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#define QUATECH_DSU100 0xC040 /* DSU100 */
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#define QUATECH_DSU200 0xC050 /* DSU200 */
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#define QUATECH_QSU100 0xC060 /* QSU100 */
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#define QUATECH_QSU200 0xC070 /* QSU200 */
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#define QUATECH_ESU100A 0xC080 /* ESU100A */
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#define QUATECH_ESU100B 0xC081 /* ESU100B */
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#define QUATECH_ESU200A 0xC0A0 /* ESU200A */
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#define QUATECH_ESU200B 0xC0A1 /* ESU200B */
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#define QUATECH_HSU100A 0xC090 /* HSU100A */
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#define QUATECH_HSU100B 0xC091 /* HSU100B */
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#define QUATECH_HSU100C 0xC092 /* HSU100C */
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#define QUATECH_HSU100D 0xC093 /* HSU100D */
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#define QUATECH_HSU200A 0xC0B0 /* HSU200A */
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#define QUATECH_HSU200B 0xC0B1 /* HSU200B */
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#define QUATECH_HSU200C 0xC0B2 /* HSU200C */
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#define QUATECH_HSU200D 0xC0B3 /* HSU200D */
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#define QUATECH_SSU100_2 0xC120 /* SSU100_2 */
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#define QUATECH_DSU100_2 0xC140 /* DSU100_2 */
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#define QUATECH_DSU400_2 0xC150 /* DSU400_2 */
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#define QUATECH_QSU100_2 0xC160 /* QSU100_2 */
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#define QUATECH_QSU400_2 0xC170 /* QSU400_2 */
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#define QUATECH_ESU400_2 0xC180 /* ESU400_2 */
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#define QUATECH_ESU100_2 0xC1A0 /* ESU100_2 */
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#define QT_SET_GET_DEVICE 0xc2
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#define QT_OPEN_CLOSE_CHANNEL 0xca
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#define QT_GET_SET_PREBUF_TRIG_LVL 0xcc
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#define QT_SET_ATF 0xcd
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#define QT_GET_SET_REGISTER 0xc0
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#define QT_GET_SET_UART 0xc1
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#define QT_HW_FLOW_CONTROL_MASK 0xc5
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#define QT_SW_FLOW_CONTROL_MASK 0xc6
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#define QT_SW_FLOW_CONTROL_DISABLE 0xc7
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#define QT_BREAK_CONTROL 0xc8
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#define USBD_TRANSFER_DIRECTION_IN 0xc0
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#define USBD_TRANSFER_DIRECTION_OUT 0x40
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#define MAX_BAUD_RATE 460800
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#define MAX_BAUD_REMAINDER 4608
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#define DIV_LATCH_LS 0x00
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#define XMT_HOLD_REGISTER 0x00
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#define XVR_BUFFER_REGISTER 0x00
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#define DIV_LATCH_MS 0x01
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#define FIFO_CONTROL_REGISTER 0x02
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#define LINE_CONTROL_REGISTER 0x03
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#define MODEM_CONTROL_REGISTER 0x04
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#define LINE_STATUS_REGISTER 0x05
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#define MODEM_STATUS_REGISTER 0x06
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#define SERIAL_MCR_DTR 0x01
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#define SERIAL_MCR_RTS 0x02
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#define SERIAL_MCR_LOOP 0x10
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#define SERIAL_MSR_CTS 0x10
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#define SERIAL_MSR_CD 0x80
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#define SERIAL_MSR_RI 0x40
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#define SERIAL_MSR_DSR 0x20
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#define SERIAL_MSR_MASK 0xf0
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#define SERIAL_8_DATA 0x03
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#define SERIAL_7_DATA 0x02
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#define SERIAL_6_DATA 0x01
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#define SERIAL_5_DATA 0x00
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#define SERIAL_ODD_PARITY 0X08
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#define SERIAL_EVEN_PARITY 0X18
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#define SERIAL_TWO_STOPB 0x04
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#define SERIAL_ONE_STOPB 0x00
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#define DEFAULT_DIVISOR 0x30 /* gives 9600 baud rate */
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#define DEFAULT_LCR SERIAL_8_DATA /* 8, none , 1 */
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#define FULLPWRBIT 0x00000080
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#define NEXT_BOARD_POWER_BIT 0x00000004
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#define SERIAL_LSR_OE 0x02
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#define SERIAL_LSR_PE 0x04
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#define SERIAL_LSR_FE 0x08
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#define SERIAL_LSR_BI 0x10
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#define SERIAL_MSR_CTS 0x10
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#define SERIAL_MSR_CD 0x80
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#define SERIAL_MSR_RI 0x40
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#define SERIAL_MSR_DSR 0x20
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#define SERIAL_MSR_MASK 0xf0
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#define PREFUFF_LEVEL_CONSERVATIVE 128
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#define ATC_DISABLED 0x0
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#define RR_BITS 0x03 /* for clearing clock bits */
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#define DUPMODE_BITS 0xc0
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#define CLKS_X4 0x02
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#define LOOPMODE_BITS 0x41 /* LOOP1 = b6, LOOP0 = b0 (PORT B) */
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#define ALL_LOOPBACK 0x01
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#define MODEM_CTRL 0x40
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#define RS232_MODE 0x00
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static const struct usb_device_id serqt_id_table[] = {
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU100)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU200)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_DSU100)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_DSU200)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_QSU100)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_QSU200)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU100A)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU100B)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU200A)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU200B)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU100A)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU100B)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU100C)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU100D)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU200A)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU200B)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU200C)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU200D)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU100_2)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_DSU100_2)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_DSU400_2)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_QSU100_2)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_QSU400_2)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU400_2)},
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{USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU100_2)},
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, serqt_id_table);
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struct qt_get_device_data {
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__u8 porta;
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__u8 portb;
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__u8 portc;
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};
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struct qt_open_channel_data {
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__u8 line_status;
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__u8 modem_status;
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};
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struct quatech_port {
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int port_num; /* number of the port */
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struct urb *write_urb; /* write URB for this port */
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struct urb *read_urb; /* read URB for this port */
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struct urb *int_urb;
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__u8 shadowLCR; /* last LCR value received */
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__u8 shadowMCR; /* last MCR value received */
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__u8 shadowMSR; /* last MSR value received */
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__u8 shadowLSR; /* last LSR value received */
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char open_ports;
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/* Used for TIOCMIWAIT */
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wait_queue_head_t msr_wait;
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char prev_status, diff_status;
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wait_queue_head_t wait;
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struct async_icount icount;
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struct usb_serial_port *port; /* owner of this object */
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struct qt_get_device_data DeviceData;
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spinlock_t lock;
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bool read_urb_busy;
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int RxHolding;
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int ReadBulkStopped;
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char closePending;
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};
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static struct usb_driver serqt_usb_driver = {
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.name = "quatech-usb-serial",
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.probe = usb_serial_probe,
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.disconnect = usb_serial_disconnect,
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.id_table = serqt_id_table,
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.no_dynamic_id = 1,
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};
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static int port_paranoia_check(struct usb_serial_port *port,
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const char *function)
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{
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if (!port) {
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dbg("%s - port == NULL", function);
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return -1;
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}
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if (!port->serial) {
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dbg("%s - port->serial == NULL\n", function);
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return -1;
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}
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return 0;
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}
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static int serial_paranoia_check(struct usb_serial *serial,
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const char *function)
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{
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if (!serial) {
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dbg("%s - serial == NULL\n", function);
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return -1;
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}
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if (!serial->type) {
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dbg("%s - serial->type == NULL!", function);
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return -1;
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}
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return 0;
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}
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static inline struct quatech_port *qt_get_port_private(struct usb_serial_port
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*port)
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{
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return (struct quatech_port *)usb_get_serial_port_data(port);
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}
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static inline void qt_set_port_private(struct usb_serial_port *port,
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struct quatech_port *data)
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{
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usb_set_serial_port_data(port, (void *)data);
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}
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static struct usb_serial *get_usb_serial(struct usb_serial_port *port,
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const char *function)
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{
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/* if no port was specified, or it fails a paranoia check */
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if (!port ||
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port_paranoia_check(port, function) ||
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serial_paranoia_check(port->serial, function)) {
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/*
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* then say that we dont have a valid usb_serial thing,
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* which will end up genrating -ENODEV return values
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*/
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return NULL;
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}
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return port->serial;
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}
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static void ProcessLineStatus(struct quatech_port *qt_port,
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unsigned char line_status)
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{
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qt_port->shadowLSR =
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line_status & (SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE |
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SERIAL_LSR_BI);
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return;
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}
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static void ProcessModemStatus(struct quatech_port *qt_port,
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unsigned char modem_status)
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{
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qt_port->shadowMSR = modem_status;
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wake_up_interruptible(&qt_port->wait);
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return;
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}
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static void ProcessRxChar(struct tty_struct *tty, struct usb_serial_port *port,
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unsigned char data)
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{
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struct urb *urb = port->read_urb;
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if (urb->actual_length)
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tty_insert_flip_char(tty, data, TTY_NORMAL);
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}
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static void qt_write_bulk_callback(struct urb *urb)
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{
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struct tty_struct *tty;
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int status;
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struct quatech_port *quatech_port;
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status = urb->status;
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if (status) {
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dbg("nonzero write bulk status received:%d\n", status);
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return;
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}
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quatech_port = urb->context;
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dbg("%s - port %d\n", __func__, quatech_port->port_num);
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tty = tty_port_tty_get(&quatech_port->port->port);
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if (tty)
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tty_wakeup(tty);
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tty_kref_put(tty);
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}
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static void qt_interrupt_callback(struct urb *urb)
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{
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/* FIXME */
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}
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static void qt_read_bulk_callback(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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struct usb_serial *serial = get_usb_serial(port, __func__);
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struct quatech_port *qt_port = qt_get_port_private(port);
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unsigned char *data;
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struct tty_struct *tty;
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unsigned int index;
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unsigned int RxCount;
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int i, result;
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int flag, flag_data;
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if (urb->status) {
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qt_port->ReadBulkStopped = 1;
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dbg("%s - nonzero write bulk status received: %d\n",
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__func__, urb->status);
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return;
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}
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tty = tty_port_tty_get(&port->port);
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if (!tty) {
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dbg("%s - bad tty pointer - exiting", __func__);
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return;
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}
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data = urb->transfer_buffer;
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RxCount = urb->actual_length;
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/* index = MINOR(port->tty->device) - serial->minor; */
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index = tty->index - serial->minor;
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dbg("%s - port %d\n", __func__, port->number);
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dbg("%s - port->RxHolding = %d\n", __func__, qt_port->RxHolding);
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if (port_paranoia_check(port, __func__) != 0) {
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dbg("%s - port_paranoia_check, exiting\n", __func__);
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qt_port->ReadBulkStopped = 1;
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goto exit;
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}
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if (!serial) {
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dbg("%s - bad serial pointer, exiting\n", __func__);
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goto exit;
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}
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if (qt_port->closePending == 1) {
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/* Were closing , stop reading */
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dbg("%s - (qt_port->closepending == 1\n", __func__);
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qt_port->ReadBulkStopped = 1;
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goto exit;
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}
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/*
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* RxHolding is asserted by throttle, if we assert it, we're not
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* receiving any more characters and let the box handle the flow
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* control
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*/
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if (qt_port->RxHolding == 1) {
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qt_port->ReadBulkStopped = 1;
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goto exit;
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}
|
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|
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if (urb->status) {
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qt_port->ReadBulkStopped = 1;
|
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|
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dbg("%s - nonzero read bulk status received: %d\n",
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__func__, urb->status);
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goto exit;
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}
|
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|
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if (tty && RxCount) {
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flag_data = 0;
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for (i = 0; i < RxCount; ++i) {
|
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/* Look ahead code here */
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if ((i <= (RxCount - 3)) && (data[i] == 0x1b)
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&& (data[i + 1] == 0x1b)) {
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flag = 0;
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switch (data[i + 2]) {
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case 0x00:
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/* line status change 4th byte must follow */
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if (i > (RxCount - 4)) {
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dbg("Illegal escape seuences in received data\n");
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break;
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}
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ProcessLineStatus(qt_port, data[i + 3]);
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i += 3;
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flag = 1;
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break;
|
|
|
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case 0x01:
|
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/* Modem status status change 4th byte must follow */
|
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dbg("Modem status status.\n");
|
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if (i > (RxCount - 4)) {
|
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dbg("Illegal escape sequences in received data\n");
|
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break;
|
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}
|
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ProcessModemStatus(qt_port,
|
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data[i + 3]);
|
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i += 3;
|
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flag = 1;
|
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break;
|
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case 0xff:
|
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dbg("No status sequence.\n");
|
|
|
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if (tty) {
|
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ProcessRxChar(tty, port, data[i]);
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ProcessRxChar(tty, port, data[i + 1]);
|
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}
|
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i += 2;
|
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break;
|
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}
|
|
if (flag == 1)
|
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continue;
|
|
}
|
|
|
|
if (tty && urb->actual_length)
|
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tty_insert_flip_char(tty, data[i], TTY_NORMAL);
|
|
|
|
}
|
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tty_flip_buffer_push(tty);
|
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}
|
|
|
|
/* Continue trying to always read */
|
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usb_fill_bulk_urb(port->read_urb, serial->dev,
|
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usb_rcvbulkpipe(serial->dev,
|
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port->bulk_in_endpointAddress),
|
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port->read_urb->transfer_buffer,
|
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port->read_urb->transfer_buffer_length,
|
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qt_read_bulk_callback, port);
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result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
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if (result)
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dbg("%s - failed resubmitting read urb, error %d",
|
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__func__, result);
|
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else {
|
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if (tty && RxCount) {
|
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tty_flip_buffer_push(tty);
|
|
tty_schedule_flip(tty);
|
|
}
|
|
}
|
|
|
|
schedule_work(&port->work);
|
|
exit:
|
|
tty_kref_put(tty);
|
|
}
|
|
|
|
/*
|
|
* qt_get_device
|
|
* Issue a GET_DEVICE vendor-specific request on the default control pipe If
|
|
* successful, fills in the qt_get_device_data structure pointed to by
|
|
* device_data, otherwise return a negative error number of the problem.
|
|
*/
|
|
|
|
static int qt_get_device(struct usb_serial *serial,
|
|
struct qt_get_device_data *device_data)
|
|
{
|
|
int result;
|
|
unsigned char *transfer_buffer;
|
|
|
|
transfer_buffer =
|
|
kmalloc(sizeof(struct qt_get_device_data), GFP_KERNEL);
|
|
if (!transfer_buffer)
|
|
return -ENOMEM;
|
|
|
|
result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
|
|
QT_SET_GET_DEVICE, 0xc0, 0, 0,
|
|
transfer_buffer,
|
|
sizeof(struct qt_get_device_data), 300);
|
|
if (result > 0)
|
|
memcpy(device_data, transfer_buffer,
|
|
sizeof(struct qt_get_device_data));
|
|
kfree(transfer_buffer);
|
|
|
|
return result;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* BoxSetPrebufferLevel
|
|
TELLS BOX WHEN TO ASSERT FLOW CONTROL
|
|
****************************************************************************/
|
|
static int BoxSetPrebufferLevel(struct usb_serial *serial)
|
|
{
|
|
int result;
|
|
__u16 buffer_length;
|
|
|
|
buffer_length = PREFUFF_LEVEL_CONSERVATIVE;
|
|
result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
QT_GET_SET_PREBUF_TRIG_LVL, 0x40,
|
|
buffer_length, 0, NULL, 0, 300);
|
|
return result;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* BoxSetATC
|
|
TELLS BOX WHEN TO ASSERT automatic transmitter control
|
|
****************************************************************************/
|
|
static int BoxSetATC(struct usb_serial *serial, __u16 n_Mode)
|
|
{
|
|
int result;
|
|
__u16 buffer_length;
|
|
|
|
buffer_length = PREFUFF_LEVEL_CONSERVATIVE;
|
|
|
|
result =
|
|
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
QT_SET_ATF, 0x40, n_Mode, 0, NULL, 0, 300);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* qt_set_device
|
|
* Issue a SET_DEVICE vendor-specific request on the default control pipe If
|
|
* successful returns the number of bytes written, otherwise it returns a
|
|
* negative error number of the problem.
|
|
*/
|
|
static int qt_set_device(struct usb_serial *serial,
|
|
struct qt_get_device_data *device_data)
|
|
{
|
|
int result;
|
|
__u16 length;
|
|
__u16 PortSettings;
|
|
|
|
PortSettings = ((__u16) (device_data->portb));
|
|
PortSettings = (PortSettings << 8);
|
|
PortSettings += ((__u16) (device_data->porta));
|
|
|
|
length = sizeof(struct qt_get_device_data);
|
|
dbg("%s - PortSettings = 0x%x\n", __func__, PortSettings);
|
|
|
|
result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
QT_SET_GET_DEVICE, 0x40, PortSettings,
|
|
0, NULL, 0, 300);
|
|
return result;
|
|
}
|
|
|
|
static int qt_open_channel(struct usb_serial *serial, __u16 Uart_Number,
|
|
struct qt_open_channel_data *pDeviceData)
|
|
{
|
|
int result;
|
|
|
|
result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
|
|
QT_OPEN_CLOSE_CHANNEL,
|
|
USBD_TRANSFER_DIRECTION_IN, 1, Uart_Number,
|
|
pDeviceData,
|
|
sizeof(struct qt_open_channel_data), 300);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
static int qt_close_channel(struct usb_serial *serial, __u16 Uart_Number)
|
|
{
|
|
int result;
|
|
|
|
result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
|
|
QT_OPEN_CLOSE_CHANNEL,
|
|
USBD_TRANSFER_DIRECTION_OUT, 0, Uart_Number,
|
|
NULL, 0, 300);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
/****************************************************************************
|
|
* BoxGetRegister
|
|
* issuse a GET_REGISTER vendor-spcific request on the default control pipe
|
|
* If successful, fills in the pValue with the register value asked for
|
|
****************************************************************************/
|
|
static int BoxGetRegister(struct usb_serial *serial, unsigned short Uart_Number,
|
|
unsigned short Register_Num, __u8 *pValue)
|
|
{
|
|
int result;
|
|
__u16 current_length;
|
|
|
|
current_length = sizeof(struct qt_get_device_data);
|
|
|
|
result =
|
|
usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
|
|
QT_GET_SET_REGISTER, 0xC0, Register_Num,
|
|
Uart_Number, (void *)pValue, sizeof(*pValue), 300);
|
|
|
|
return result;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* BoxSetRegister
|
|
* issuse a GET_REGISTER vendor-spcific request on the default control pipe
|
|
* If successful, fills in the pValue with the register value asked for
|
|
****************************************************************************/
|
|
static int BoxSetRegister(struct usb_serial *serial, unsigned short Uart_Number,
|
|
unsigned short Register_Num, unsigned short Value)
|
|
{
|
|
int result;
|
|
unsigned short RegAndByte;
|
|
|
|
RegAndByte = Value;
|
|
RegAndByte = RegAndByte << 8;
|
|
RegAndByte = RegAndByte + Register_Num;
|
|
|
|
/*
|
|
result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
QT_GET_SET_REGISTER, 0xC0, Register_Num,
|
|
Uart_Number, NULL, 0, 300);
|
|
*/
|
|
|
|
result =
|
|
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
QT_GET_SET_REGISTER, 0x40, RegAndByte, Uart_Number,
|
|
NULL, 0, 300);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* qt_setuart
|
|
* issuse a SET_UART vendor-spcific request on the default control pipe
|
|
* If successful sets baud rate divisor and LCR value
|
|
*/
|
|
static int qt_setuart(struct usb_serial *serial, unsigned short Uart_Number,
|
|
unsigned short default_divisor, unsigned char default_LCR)
|
|
{
|
|
int result;
|
|
unsigned short UartNumandLCR;
|
|
|
|
UartNumandLCR = (default_LCR << 8) + Uart_Number;
|
|
|
|
result =
|
|
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
QT_GET_SET_UART, 0x40, default_divisor,
|
|
UartNumandLCR, NULL, 0, 300);
|
|
|
|
return result;
|
|
}
|
|
|
|
static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int index,
|
|
int bSet)
|
|
{
|
|
__u8 mcr = 0;
|
|
__u8 msr = 0, MOUT_Value = 0;
|
|
unsigned int status;
|
|
|
|
if (bSet == 1) {
|
|
/* flow control, box will clear RTS line to prevent remote */
|
|
mcr = SERIAL_MCR_RTS;
|
|
} /* device from xmitting more chars */
|
|
else {
|
|
/* no flow control to remote device */
|
|
mcr = 0;
|
|
|
|
}
|
|
MOUT_Value = mcr << 8;
|
|
|
|
if (bSet == 1) {
|
|
/* flow control, box will inhibit xmit data if CTS line is
|
|
* asserted */
|
|
msr = SERIAL_MSR_CTS;
|
|
} else {
|
|
/* Box will not inhimbe xmit data due to CTS line */
|
|
msr = 0;
|
|
}
|
|
MOUT_Value |= msr;
|
|
|
|
status =
|
|
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
QT_HW_FLOW_CONTROL_MASK, 0x40, MOUT_Value,
|
|
index, NULL, 0, 300);
|
|
return status;
|
|
|
|
}
|
|
|
|
static int BoxSetSW_FlowCtrl(struct usb_serial *serial, __u16 index,
|
|
unsigned char stop_char, unsigned char start_char)
|
|
{
|
|
__u16 nSWflowout;
|
|
int result;
|
|
|
|
nSWflowout = start_char << 8;
|
|
nSWflowout = (unsigned short)stop_char;
|
|
|
|
result =
|
|
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
QT_SW_FLOW_CONTROL_MASK, 0x40, nSWflowout,
|
|
index, NULL, 0, 300);
|
|
return result;
|
|
|
|
}
|
|
|
|
static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 index)
|
|
{
|
|
int result;
|
|
|
|
result =
|
|
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
QT_SW_FLOW_CONTROL_DISABLE, 0x40, 0, index,
|
|
NULL, 0, 300);
|
|
return result;
|
|
|
|
}
|
|
|
|
static int qt_startup(struct usb_serial *serial)
|
|
{
|
|
struct usb_serial_port *port;
|
|
struct quatech_port *qt_port;
|
|
struct qt_get_device_data DeviceData;
|
|
int i;
|
|
int status;
|
|
|
|
dbg("enterting %s", __func__);
|
|
|
|
/* Now setup per port private data */
|
|
for (i = 0; i < serial->num_ports; i++) {
|
|
port = serial->port[i];
|
|
qt_port = kzalloc(sizeof(*qt_port), GFP_KERNEL);
|
|
if (!qt_port) {
|
|
dbg("%s: kmalloc for quatech_port (%d) failed!.",
|
|
__func__, i);
|
|
for (--i; i >= 0; i--) {
|
|
port = serial->port[i];
|
|
kfree(usb_get_serial_port_data(port));
|
|
usb_set_serial_port_data(port, NULL);
|
|
}
|
|
return -ENOMEM;
|
|
}
|
|
spin_lock_init(&qt_port->lock);
|
|
|
|
usb_set_serial_port_data(port, qt_port);
|
|
|
|
}
|
|
|
|
status = qt_get_device(serial, &DeviceData);
|
|
if (status < 0) {
|
|
dbg(__FILE__ "box_get_device failed");
|
|
goto startup_error;
|
|
}
|
|
|
|
dbg(__FILE__ "DeviceData.portb = 0x%x", DeviceData.portb);
|
|
|
|
DeviceData.portb &= ~FULLPWRBIT;
|
|
dbg(__FILE__ "Changing DeviceData.portb to 0x%x", DeviceData.portb);
|
|
|
|
status = qt_set_device(serial, &DeviceData);
|
|
if (status < 0) {
|
|
dbg(__FILE__ "qt_set_device failed\n");
|
|
goto startup_error;
|
|
}
|
|
|
|
status = qt_get_device(serial, &DeviceData);
|
|
if (status < 0) {
|
|
dbg(__FILE__ "qt_get_device failed");
|
|
goto startup_error;
|
|
}
|
|
|
|
switch (serial->dev->descriptor.idProduct) {
|
|
case QUATECH_SSU100:
|
|
case QUATECH_DSU100:
|
|
case QUATECH_QSU100:
|
|
case QUATECH_ESU100A:
|
|
case QUATECH_ESU100B:
|
|
case QUATECH_HSU100A:
|
|
case QUATECH_HSU100B:
|
|
case QUATECH_HSU100C:
|
|
case QUATECH_HSU100D:
|
|
DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS);
|
|
DeviceData.porta |= CLKS_X4;
|
|
DeviceData.portb &= ~(LOOPMODE_BITS);
|
|
DeviceData.portb |= RS232_MODE;
|
|
break;
|
|
|
|
case QUATECH_SSU200:
|
|
case QUATECH_DSU200:
|
|
case QUATECH_QSU200:
|
|
case QUATECH_ESU200A:
|
|
case QUATECH_ESU200B:
|
|
case QUATECH_HSU200A:
|
|
case QUATECH_HSU200B:
|
|
case QUATECH_HSU200C:
|
|
case QUATECH_HSU200D:
|
|
DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS);
|
|
DeviceData.porta |= CLKS_X4;
|
|
DeviceData.portb &= ~(LOOPMODE_BITS);
|
|
DeviceData.portb |= ALL_LOOPBACK;
|
|
break;
|
|
default:
|
|
DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS);
|
|
DeviceData.porta |= CLKS_X4;
|
|
DeviceData.portb &= ~(LOOPMODE_BITS);
|
|
DeviceData.portb |= RS232_MODE;
|
|
break;
|
|
|
|
}
|
|
|
|
status = BoxSetPrebufferLevel(serial); /* sets to default value */
|
|
if (status < 0) {
|
|
dbg(__FILE__ "BoxSetPrebufferLevel failed\n");
|
|
goto startup_error;
|
|
}
|
|
|
|
status = BoxSetATC(serial, ATC_DISABLED);
|
|
if (status < 0) {
|
|
dbg(__FILE__ "BoxSetATC failed\n");
|
|
goto startup_error;
|
|
}
|
|
|
|
dbg(__FILE__ "DeviceData.portb = 0x%x", DeviceData.portb);
|
|
|
|
DeviceData.portb |= NEXT_BOARD_POWER_BIT;
|
|
dbg(__FILE__ "Changing DeviceData.portb to 0x%x", DeviceData.portb);
|
|
|
|
status = qt_set_device(serial, &DeviceData);
|
|
if (status < 0) {
|
|
dbg(__FILE__ "qt_set_device failed\n");
|
|
goto startup_error;
|
|
}
|
|
|
|
dbg("Exit Success %s\n", __func__);
|
|
|
|
return 0;
|
|
|
|
startup_error:
|
|
for (i = 0; i < serial->num_ports; i++) {
|
|
port = serial->port[i];
|
|
qt_port = qt_get_port_private(port);
|
|
kfree(qt_port);
|
|
usb_set_serial_port_data(port, NULL);
|
|
}
|
|
|
|
dbg("Exit fail %s\n", __func__);
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
static void qt_release(struct usb_serial *serial)
|
|
{
|
|
struct usb_serial_port *port;
|
|
struct quatech_port *qt_port;
|
|
int i;
|
|
|
|
dbg("enterting %s", __func__);
|
|
|
|
for (i = 0; i < serial->num_ports; i++) {
|
|
port = serial->port[i];
|
|
if (!port)
|
|
continue;
|
|
|
|
qt_port = usb_get_serial_port_data(port);
|
|
kfree(qt_port);
|
|
usb_set_serial_port_data(port, NULL);
|
|
}
|
|
|
|
}
|
|
|
|
static int qt_open(struct tty_struct *tty,
|
|
struct usb_serial_port *port)
|
|
{
|
|
struct usb_serial *serial;
|
|
struct quatech_port *quatech_port;
|
|
struct quatech_port *port0;
|
|
struct qt_open_channel_data ChannelData;
|
|
|
|
int result;
|
|
|
|
if (port_paranoia_check(port, __func__))
|
|
return -ENODEV;
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
|
|
serial = port->serial;
|
|
|
|
if (serial_paranoia_check(serial, __func__))
|
|
return -ENODEV;
|
|
|
|
quatech_port = qt_get_port_private(port);
|
|
port0 = qt_get_port_private(serial->port[0]);
|
|
|
|
if (quatech_port == NULL || port0 == NULL)
|
|
return -ENODEV;
|
|
|
|
usb_clear_halt(serial->dev, port->write_urb->pipe);
|
|
usb_clear_halt(serial->dev, port->read_urb->pipe);
|
|
port0->open_ports++;
|
|
|
|
result = qt_get_device(serial, &port0->DeviceData);
|
|
|
|
/* Port specific setups */
|
|
result = qt_open_channel(serial, port->number, &ChannelData);
|
|
if (result < 0) {
|
|
dbg(__FILE__ "qt_open_channel failed\n");
|
|
return result;
|
|
}
|
|
dbg(__FILE__ "qt_open_channel completed.\n");
|
|
|
|
/* FIXME: are these needed? Does it even do anything useful? */
|
|
quatech_port->shadowLSR = ChannelData.line_status &
|
|
(SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE | SERIAL_LSR_BI);
|
|
|
|
quatech_port->shadowMSR = ChannelData.modem_status &
|
|
(SERIAL_MSR_CTS | SERIAL_MSR_DSR | SERIAL_MSR_RI | SERIAL_MSR_CD);
|
|
|
|
/* Set Baud rate to default and turn off (default)flow control here */
|
|
result = qt_setuart(serial, port->number, DEFAULT_DIVISOR, DEFAULT_LCR);
|
|
if (result < 0) {
|
|
dbg(__FILE__ "qt_setuart failed\n");
|
|
return result;
|
|
}
|
|
dbg(__FILE__ "qt_setuart completed.\n");
|
|
|
|
/*
|
|
* Put this here to make it responsive to stty and defaults set by
|
|
* the tty layer
|
|
*/
|
|
/* FIXME: is this needed? */
|
|
/* qt_set_termios(tty, port, NULL); */
|
|
|
|
/* Check to see if we've set up our endpoint info yet */
|
|
if (port0->open_ports == 1) {
|
|
if (serial->port[0]->interrupt_in_buffer == NULL) {
|
|
/* set up interrupt urb */
|
|
usb_fill_int_urb(serial->port[0]->interrupt_in_urb,
|
|
serial->dev,
|
|
usb_rcvintpipe(serial->dev,
|
|
serial->port[0]->interrupt_in_endpointAddress),
|
|
serial->port[0]->interrupt_in_buffer,
|
|
serial->port[0]->
|
|
interrupt_in_urb->transfer_buffer_length,
|
|
qt_interrupt_callback, serial,
|
|
serial->port[0]->
|
|
interrupt_in_urb->interval);
|
|
|
|
result =
|
|
usb_submit_urb(serial->port[0]->interrupt_in_urb,
|
|
GFP_KERNEL);
|
|
if (result) {
|
|
dev_err(&port->dev,
|
|
"%s - Error %d submitting "
|
|
"interrupt urb\n", __func__, result);
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
dbg("port number is %d\n", port->number);
|
|
dbg("serial number is %d\n", port->serial->minor);
|
|
dbg("Bulkin endpoint is %d\n", port->bulk_in_endpointAddress);
|
|
dbg("BulkOut endpoint is %d\n", port->bulk_out_endpointAddress);
|
|
dbg("Interrupt endpoint is %d\n", port->interrupt_in_endpointAddress);
|
|
dbg("port's number in the device is %d\n", quatech_port->port_num);
|
|
quatech_port->read_urb = port->read_urb;
|
|
|
|
/* set up our bulk in urb */
|
|
|
|
usb_fill_bulk_urb(quatech_port->read_urb,
|
|
serial->dev,
|
|
usb_rcvbulkpipe(serial->dev,
|
|
port->bulk_in_endpointAddress),
|
|
port->bulk_in_buffer,
|
|
quatech_port->read_urb->transfer_buffer_length,
|
|
qt_read_bulk_callback, quatech_port);
|
|
|
|
dbg("qt_open: bulkin endpoint is %d\n", port->bulk_in_endpointAddress);
|
|
quatech_port->read_urb_busy = true;
|
|
result = usb_submit_urb(quatech_port->read_urb, GFP_KERNEL);
|
|
if (result) {
|
|
dev_err(&port->dev,
|
|
"%s - Error %d submitting control urb\n",
|
|
__func__, result);
|
|
quatech_port->read_urb_busy = false;
|
|
}
|
|
|
|
/* initialize our wait queues */
|
|
init_waitqueue_head(&quatech_port->wait);
|
|
init_waitqueue_head(&quatech_port->msr_wait);
|
|
|
|
/* initialize our icount structure */
|
|
memset(&(quatech_port->icount), 0x00, sizeof(quatech_port->icount));
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int qt_chars_in_buffer(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct usb_serial *serial;
|
|
int chars = 0;
|
|
|
|
serial = get_usb_serial(port, __func__);
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
|
|
if (serial->num_bulk_out) {
|
|
if (port->write_urb->status == -EINPROGRESS)
|
|
chars = port->write_urb->transfer_buffer_length;
|
|
}
|
|
|
|
dbg("%s - returns %d\n", __func__, chars);
|
|
|
|
return chars;
|
|
}
|
|
|
|
static void qt_block_until_empty(struct tty_struct *tty,
|
|
struct quatech_port *qt_port)
|
|
{
|
|
int timeout = HZ / 10;
|
|
int wait = 30;
|
|
int count;
|
|
|
|
while (1) {
|
|
|
|
count = qt_chars_in_buffer(tty);
|
|
|
|
if (count <= 0)
|
|
return;
|
|
|
|
interruptible_sleep_on_timeout(&qt_port->wait, timeout);
|
|
|
|
wait--;
|
|
if (wait == 0) {
|
|
dbg("%s - TIMEOUT", __func__);
|
|
return;
|
|
} else {
|
|
wait = 30;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qt_close(struct usb_serial_port *port)
|
|
{
|
|
struct usb_serial *serial = port->serial;
|
|
struct quatech_port *qt_port;
|
|
struct quatech_port *port0;
|
|
struct tty_struct *tty;
|
|
int status;
|
|
unsigned int index;
|
|
status = 0;
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
|
|
tty = tty_port_tty_get(&port->port);
|
|
index = tty->index - serial->minor;
|
|
|
|
qt_port = qt_get_port_private(port);
|
|
port0 = qt_get_port_private(serial->port[0]);
|
|
|
|
/* shutdown any bulk reads that might be going on */
|
|
if (serial->num_bulk_out)
|
|
usb_unlink_urb(port->write_urb);
|
|
if (serial->num_bulk_in)
|
|
usb_unlink_urb(port->read_urb);
|
|
|
|
/* wait up to for transmitter to empty */
|
|
if (serial->dev)
|
|
qt_block_until_empty(tty, qt_port);
|
|
tty_kref_put(tty);
|
|
|
|
/* Close uart channel */
|
|
status = qt_close_channel(serial, index);
|
|
if (status < 0)
|
|
dbg("%s - port %d qt_close_channel failed.\n",
|
|
__func__, port->number);
|
|
|
|
port0->open_ports--;
|
|
|
|
dbg("qt_num_open_ports in close%d:in port%d\n",
|
|
port0->open_ports, port->number);
|
|
|
|
if (port0->open_ports == 0) {
|
|
if (serial->port[0]->interrupt_in_urb) {
|
|
dbg("%s", "Shutdown interrupt_in_urb\n");
|
|
usb_kill_urb(serial->port[0]->interrupt_in_urb);
|
|
}
|
|
|
|
}
|
|
|
|
if (qt_port->write_urb) {
|
|
/* if this urb had a transfer buffer already (old tx) free it */
|
|
kfree(qt_port->write_urb->transfer_buffer);
|
|
usb_free_urb(qt_port->write_urb);
|
|
}
|
|
|
|
}
|
|
|
|
static int qt_write(struct tty_struct *tty, struct usb_serial_port *port,
|
|
const unsigned char *buf, int count)
|
|
{
|
|
int result;
|
|
struct usb_serial *serial = get_usb_serial(port, __func__);
|
|
|
|
if (serial == NULL)
|
|
return -ENODEV;
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
|
|
if (count == 0) {
|
|
dbg("%s - write request of 0 bytes\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
/* only do something if we have a bulk out endpoint */
|
|
if (serial->num_bulk_out) {
|
|
if (port->write_urb->status == -EINPROGRESS) {
|
|
dbg("%s - already writing\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
count =
|
|
(count > port->bulk_out_size) ? port->bulk_out_size : count;
|
|
memcpy(port->write_urb->transfer_buffer, buf, count);
|
|
|
|
/* set up our urb */
|
|
|
|
usb_fill_bulk_urb(port->write_urb, serial->dev,
|
|
usb_sndbulkpipe(serial->dev,
|
|
port->
|
|
bulk_out_endpointAddress),
|
|
port->write_urb->transfer_buffer, count,
|
|
qt_write_bulk_callback, port);
|
|
|
|
/* send the data out the bulk port */
|
|
result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
|
|
if (result)
|
|
dbg("%s - failed submitting write urb, error %d\n",
|
|
__func__, result);
|
|
else
|
|
result = count;
|
|
|
|
return result;
|
|
}
|
|
|
|
/* no bulk out, so return 0 bytes written */
|
|
return 0;
|
|
}
|
|
|
|
static int qt_write_room(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct usb_serial *serial;
|
|
struct quatech_port *qt_port;
|
|
unsigned long flags;
|
|
|
|
int retval = -EINVAL;
|
|
|
|
if (port_paranoia_check(port, __func__)) {
|
|
dbg("%s", "Invalid port\n");
|
|
return -1;
|
|
}
|
|
|
|
serial = get_usb_serial(port, __func__);
|
|
|
|
if (!serial)
|
|
return -ENODEV;
|
|
|
|
qt_port = qt_get_port_private(port);
|
|
|
|
spin_lock_irqsave(&qt_port->lock, flags);
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
|
|
if (serial->num_bulk_out) {
|
|
if (port->write_urb->status != -EINPROGRESS)
|
|
retval = port->bulk_out_size;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&qt_port->lock, flags);
|
|
return retval;
|
|
|
|
}
|
|
|
|
static int qt_ioctl(struct tty_struct *tty,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct quatech_port *qt_port = qt_get_port_private(port);
|
|
struct usb_serial *serial = get_usb_serial(port, __func__);
|
|
unsigned int index;
|
|
|
|
dbg("%s cmd 0x%04x", __func__, cmd);
|
|
|
|
index = tty->index - serial->minor;
|
|
|
|
if (cmd == TIOCMIWAIT) {
|
|
while (qt_port != NULL) {
|
|
interruptible_sleep_on(&qt_port->msr_wait);
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
else {
|
|
char diff = qt_port->diff_status;
|
|
|
|
if (diff == 0)
|
|
return -EIO; /* no change => error */
|
|
|
|
/* Consume all events */
|
|
qt_port->diff_status = 0;
|
|
|
|
if (((arg & TIOCM_RNG)
|
|
&& (diff & SERIAL_MSR_RI))
|
|
|| ((arg & TIOCM_DSR)
|
|
&& (diff & SERIAL_MSR_DSR))
|
|
|| ((arg & TIOCM_CD)
|
|
&& (diff & SERIAL_MSR_CD))
|
|
|| ((arg & TIOCM_CTS)
|
|
&& (diff & SERIAL_MSR_CTS))) {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
dbg("%s -No ioctl for that one. port = %d\n", __func__, port->number);
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
|
|
static void qt_set_termios(struct tty_struct *tty,
|
|
struct usb_serial_port *port,
|
|
struct ktermios *old_termios)
|
|
{
|
|
struct ktermios *termios = tty->termios;
|
|
unsigned char new_LCR = 0;
|
|
unsigned int cflag = termios->c_cflag;
|
|
unsigned int index;
|
|
int baud, divisor, remainder;
|
|
int status;
|
|
|
|
dbg("%s", __func__);
|
|
|
|
index = tty->index - port->serial->minor;
|
|
|
|
switch (cflag) {
|
|
case CS5:
|
|
new_LCR |= SERIAL_5_DATA;
|
|
break;
|
|
case CS6:
|
|
new_LCR |= SERIAL_6_DATA;
|
|
break;
|
|
case CS7:
|
|
new_LCR |= SERIAL_7_DATA;
|
|
break;
|
|
default:
|
|
case CS8:
|
|
new_LCR |= SERIAL_8_DATA;
|
|
break;
|
|
}
|
|
|
|
/* Parity stuff */
|
|
if (cflag & PARENB) {
|
|
if (cflag & PARODD)
|
|
new_LCR |= SERIAL_ODD_PARITY;
|
|
else
|
|
new_LCR |= SERIAL_EVEN_PARITY;
|
|
}
|
|
if (cflag & CSTOPB)
|
|
new_LCR |= SERIAL_TWO_STOPB;
|
|
else
|
|
new_LCR |= SERIAL_ONE_STOPB;
|
|
|
|
dbg("%s - 4\n", __func__);
|
|
|
|
/* Thats the LCR stuff, go ahead and set it */
|
|
baud = tty_get_baud_rate(tty);
|
|
if (!baud)
|
|
/* pick a default, any default... */
|
|
baud = 9600;
|
|
|
|
dbg("%s - got baud = %d\n", __func__, baud);
|
|
|
|
divisor = MAX_BAUD_RATE / baud;
|
|
remainder = MAX_BAUD_RATE % baud;
|
|
/* Round to nearest divisor */
|
|
if (((remainder * 2) >= baud) && (baud != 110))
|
|
divisor++;
|
|
|
|
/*
|
|
* Set Baud rate to default and turn off (default)flow control here
|
|
*/
|
|
status =
|
|
qt_setuart(port->serial, index, (unsigned short)divisor, new_LCR);
|
|
if (status < 0) {
|
|
dbg(__FILE__ "qt_setuart failed\n");
|
|
return;
|
|
}
|
|
|
|
/* Now determine flow control */
|
|
if (cflag & CRTSCTS) {
|
|
dbg("%s - Enabling HW flow control port %d\n", __func__,
|
|
port->number);
|
|
|
|
/* Enable RTS/CTS flow control */
|
|
status = BoxSetHW_FlowCtrl(port->serial, index, 1);
|
|
|
|
if (status < 0) {
|
|
dbg(__FILE__ "BoxSetHW_FlowCtrl failed\n");
|
|
return;
|
|
}
|
|
} else {
|
|
/* Disable RTS/CTS flow control */
|
|
dbg("%s - disabling HW flow control port %d\n", __func__,
|
|
port->number);
|
|
|
|
status = BoxSetHW_FlowCtrl(port->serial, index, 0);
|
|
if (status < 0) {
|
|
dbg(__FILE__ "BoxSetHW_FlowCtrl failed\n");
|
|
return;
|
|
}
|
|
|
|
}
|
|
|
|
/* if we are implementing XON/XOFF, set the start and stop character in
|
|
* the device */
|
|
if (I_IXOFF(tty) || I_IXON(tty)) {
|
|
unsigned char stop_char = STOP_CHAR(tty);
|
|
unsigned char start_char = START_CHAR(tty);
|
|
status =
|
|
BoxSetSW_FlowCtrl(port->serial, index, stop_char,
|
|
start_char);
|
|
if (status < 0)
|
|
dbg(__FILE__ "BoxSetSW_FlowCtrl (enabled) failed\n");
|
|
|
|
} else {
|
|
/* disable SW flow control */
|
|
status = BoxDisable_SW_FlowCtrl(port->serial, index);
|
|
if (status < 0)
|
|
dbg(__FILE__ "BoxSetSW_FlowCtrl (diabling) failed\n");
|
|
|
|
}
|
|
tty->termios->c_cflag &= ~CMSPAR;
|
|
/* FIXME: Error cases should be returning the actual bits changed only */
|
|
}
|
|
|
|
static void qt_break(struct tty_struct *tty, int break_state)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct usb_serial *serial = get_usb_serial(port, __func__);
|
|
struct quatech_port *qt_port;
|
|
u16 index, onoff;
|
|
unsigned int result;
|
|
unsigned long flags;
|
|
|
|
index = tty->index - serial->minor;
|
|
|
|
qt_port = qt_get_port_private(port);
|
|
|
|
if (break_state == -1)
|
|
onoff = 1;
|
|
else
|
|
onoff = 0;
|
|
|
|
spin_lock_irqsave(&qt_port->lock, flags);
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
|
|
result =
|
|
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
QT_BREAK_CONTROL, 0x40, onoff, index, NULL, 0, 300);
|
|
|
|
spin_unlock_irqrestore(&qt_port->lock, flags);
|
|
}
|
|
|
|
static inline int qt_real_tiocmget(struct tty_struct *tty,
|
|
struct usb_serial_port *port,
|
|
struct usb_serial *serial)
|
|
{
|
|
|
|
u8 mcr;
|
|
u8 msr;
|
|
unsigned int result = 0;
|
|
int status;
|
|
unsigned int index;
|
|
|
|
dbg("%s - port %d, tty =0x%p\n", __func__, port->number, tty);
|
|
|
|
index = tty->index - serial->minor;
|
|
status =
|
|
BoxGetRegister(port->serial, index, MODEM_CONTROL_REGISTER, &mcr);
|
|
if (status >= 0) {
|
|
status =
|
|
BoxGetRegister(port->serial, index,
|
|
MODEM_STATUS_REGISTER, &msr);
|
|
|
|
}
|
|
|
|
if (status >= 0) {
|
|
result = ((mcr & SERIAL_MCR_DTR) ? TIOCM_DTR : 0)
|
|
/* DTR IS SET */
|
|
| ((mcr & SERIAL_MCR_RTS) ? TIOCM_RTS : 0)
|
|
/* RTS IS SET */
|
|
| ((msr & SERIAL_MSR_CTS) ? TIOCM_CTS : 0)
|
|
/* CTS is set */
|
|
| ((msr & SERIAL_MSR_CD) ? TIOCM_CAR : 0)
|
|
/* Carrier detect is set */
|
|
| ((msr & SERIAL_MSR_RI) ? TIOCM_RI : 0)
|
|
/* Ring indicator set */
|
|
| ((msr & SERIAL_MSR_DSR) ? TIOCM_DSR : 0);
|
|
/* DSR is set */
|
|
return result;
|
|
|
|
} else
|
|
return -ESPIPE;
|
|
}
|
|
|
|
static inline int qt_real_tiocmset(struct tty_struct *tty,
|
|
struct usb_serial_port *port,
|
|
struct usb_serial *serial,
|
|
unsigned int value)
|
|
{
|
|
|
|
u8 mcr;
|
|
int status;
|
|
unsigned int index;
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
|
|
index = tty->index - serial->minor;
|
|
status =
|
|
BoxGetRegister(port->serial, index, MODEM_CONTROL_REGISTER, &mcr);
|
|
if (status < 0)
|
|
return -ESPIPE;
|
|
|
|
/*
|
|
* Turn off the RTS and DTR and loopbcck and then only turn on what was
|
|
* asked for
|
|
*/
|
|
mcr &= ~(SERIAL_MCR_RTS | SERIAL_MCR_DTR | SERIAL_MCR_LOOP);
|
|
if (value & TIOCM_RTS)
|
|
mcr |= SERIAL_MCR_RTS;
|
|
if (value & TIOCM_DTR)
|
|
mcr |= SERIAL_MCR_DTR;
|
|
if (value & TIOCM_LOOP)
|
|
mcr |= SERIAL_MCR_LOOP;
|
|
|
|
status =
|
|
BoxSetRegister(port->serial, index, MODEM_CONTROL_REGISTER, mcr);
|
|
if (status < 0)
|
|
return -ESPIPE;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int qt_tiocmget(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct usb_serial *serial = get_usb_serial(port, __func__);
|
|
struct quatech_port *qt_port = qt_get_port_private(port);
|
|
int retval = -ENODEV;
|
|
unsigned long flags;
|
|
|
|
dbg("In %s\n", __func__);
|
|
|
|
if (!serial)
|
|
return -ENODEV;
|
|
|
|
spin_lock_irqsave(&qt_port->lock, flags);
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
dbg("%s - port->RxHolding = %d\n", __func__, qt_port->RxHolding);
|
|
|
|
retval = qt_real_tiocmget(tty, port, serial);
|
|
|
|
spin_unlock_irqrestore(&qt_port->lock, flags);
|
|
return retval;
|
|
}
|
|
|
|
static int qt_tiocmset(struct tty_struct *tty,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct usb_serial *serial = get_usb_serial(port, __func__);
|
|
struct quatech_port *qt_port = qt_get_port_private(port);
|
|
unsigned long flags;
|
|
int retval = -ENODEV;
|
|
|
|
dbg("In %s\n", __func__);
|
|
|
|
if (!serial)
|
|
return -ENODEV;
|
|
|
|
spin_lock_irqsave(&qt_port->lock, flags);
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
dbg("%s - qt_port->RxHolding = %d\n", __func__, qt_port->RxHolding);
|
|
|
|
retval = qt_real_tiocmset(tty, port, serial, set);
|
|
|
|
spin_unlock_irqrestore(&qt_port->lock, flags);
|
|
return retval;
|
|
}
|
|
|
|
static void qt_throttle(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct usb_serial *serial = get_usb_serial(port, __func__);
|
|
struct quatech_port *qt_port;
|
|
unsigned long flags;
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
|
|
if (!serial)
|
|
return;
|
|
|
|
qt_port = qt_get_port_private(port);
|
|
|
|
spin_lock_irqsave(&qt_port->lock, flags);
|
|
|
|
/* pass on to the driver specific version of this function */
|
|
qt_port->RxHolding = 1;
|
|
dbg("%s - port->RxHolding = 1\n", __func__);
|
|
|
|
spin_unlock_irqrestore(&qt_port->lock, flags);
|
|
return;
|
|
}
|
|
|
|
static void qt_unthrottle(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct usb_serial *serial = get_usb_serial(port, __func__);
|
|
struct quatech_port *qt_port;
|
|
unsigned long flags;
|
|
unsigned int result;
|
|
|
|
if (!serial)
|
|
return;
|
|
|
|
qt_port = qt_get_port_private(port);
|
|
|
|
spin_lock_irqsave(&qt_port->lock, flags);
|
|
|
|
dbg("%s - port %d\n", __func__, port->number);
|
|
|
|
if (qt_port->RxHolding == 1) {
|
|
dbg("%s -qt_port->RxHolding == 1\n", __func__);
|
|
|
|
qt_port->RxHolding = 0;
|
|
dbg("%s - qt_port->RxHolding = 0\n", __func__);
|
|
|
|
/* if we have a bulk endpoint, start it up */
|
|
if ((serial->num_bulk_in) && (qt_port->ReadBulkStopped == 1)) {
|
|
/* 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,
|
|
qt_read_bulk_callback, port);
|
|
result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
|
|
if (result)
|
|
err("%s - failed restarting read urb, error %d",
|
|
__func__, result);
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&qt_port->lock, flags);
|
|
return;
|
|
|
|
}
|
|
|
|
static int qt_calc_num_ports(struct usb_serial *serial)
|
|
{
|
|
int num_ports;
|
|
|
|
dbg("numberofendpoints: %d\n",
|
|
(int)serial->interface->cur_altsetting->desc.bNumEndpoints);
|
|
dbg("numberofendpoints: %d\n",
|
|
(int)serial->interface->altsetting->desc.bNumEndpoints);
|
|
|
|
num_ports =
|
|
(serial->interface->cur_altsetting->desc.bNumEndpoints - 1) / 2;
|
|
|
|
return num_ports;
|
|
}
|
|
|
|
static struct usb_serial_driver quatech_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "serqt",
|
|
},
|
|
.description = DRIVER_DESC,
|
|
.usb_driver = &serqt_usb_driver,
|
|
.id_table = serqt_id_table,
|
|
.num_ports = 8,
|
|
.open = qt_open,
|
|
.close = qt_close,
|
|
.write = qt_write,
|
|
.write_room = qt_write_room,
|
|
.chars_in_buffer = qt_chars_in_buffer,
|
|
.throttle = qt_throttle,
|
|
.unthrottle = qt_unthrottle,
|
|
.calc_num_ports = qt_calc_num_ports,
|
|
.ioctl = qt_ioctl,
|
|
.set_termios = qt_set_termios,
|
|
.break_ctl = qt_break,
|
|
.tiocmget = qt_tiocmget,
|
|
.tiocmset = qt_tiocmset,
|
|
.attach = qt_startup,
|
|
.release = qt_release,
|
|
};
|
|
|
|
static int __init serqt_usb_init(void)
|
|
{
|
|
int retval;
|
|
|
|
dbg("%s\n", __func__);
|
|
|
|
/* register with usb-serial */
|
|
retval = usb_serial_register(&quatech_device);
|
|
|
|
if (retval)
|
|
goto failed_usb_serial_register;
|
|
|
|
printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
|
|
DRIVER_DESC "\n");
|
|
|
|
/* register with usb */
|
|
|
|
retval = usb_register(&serqt_usb_driver);
|
|
if (retval == 0)
|
|
return 0;
|
|
|
|
/* if we're here, usb_register() failed */
|
|
usb_serial_deregister(&quatech_device);
|
|
failed_usb_serial_register:
|
|
return retval;
|
|
}
|
|
|
|
static void __exit serqt_usb_exit(void)
|
|
{
|
|
usb_deregister(&serqt_usb_driver);
|
|
usb_serial_deregister(&quatech_device);
|
|
}
|
|
|
|
module_init(serqt_usb_init);
|
|
module_exit(serqt_usb_exit);
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Debug enabled or not");
|