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1804 lines
54 KiB
1804 lines
54 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Clean ups from Moschip version and a few ioctl implementations by: |
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* Paul B Schroeder <pschroeder "at" uplogix "dot" com> |
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* |
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* Originally based on drivers/usb/serial/io_edgeport.c which is: |
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* Copyright (C) 2000 Inside Out Networks, All rights reserved. |
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* Copyright (C) 2001-2002 Greg Kroah-Hartman <[email protected]> |
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* |
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*/ |
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|
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#include <linux/kernel.h> |
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#include <linux/errno.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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|
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#define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" |
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|
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/* |
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* 16C50 UART register defines |
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*/ |
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|
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#define LCR_BITS_5 0x00 /* 5 bits/char */ |
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#define LCR_BITS_6 0x01 /* 6 bits/char */ |
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#define LCR_BITS_7 0x02 /* 7 bits/char */ |
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#define LCR_BITS_8 0x03 /* 8 bits/char */ |
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#define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ |
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|
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#define LCR_STOP_1 0x00 /* 1 stop bit */ |
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#define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ |
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#define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ |
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#define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ |
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|
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#define LCR_PAR_NONE 0x00 /* No parity */ |
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#define LCR_PAR_ODD 0x08 /* Odd parity */ |
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#define LCR_PAR_EVEN 0x18 /* Even parity */ |
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#define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ |
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#define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ |
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#define LCR_PAR_MASK 0x38 /* Mask for parity field */ |
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|
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#define LCR_SET_BREAK 0x40 /* Set Break condition */ |
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#define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ |
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|
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#define MCR_DTR 0x01 /* Assert DTR */ |
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#define MCR_RTS 0x02 /* Assert RTS */ |
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#define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ |
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#define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ |
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#define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ |
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#define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ |
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|
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#define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ |
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#define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ |
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#define MOS7840_MSR_RI 0x40 /* Current state of RI */ |
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#define MOS7840_MSR_CD 0x80 /* Current state of CD */ |
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|
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/* |
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* Defines used for sending commands to port |
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*/ |
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|
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#define MOS_WDR_TIMEOUT 5000 /* default urb timeout */ |
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|
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#define MOS_PORT1 0x0200 |
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#define MOS_PORT2 0x0300 |
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#define MOS_VENREG 0x0000 |
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#define MOS_MAX_PORT 0x02 |
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#define MOS_WRITE 0x0E |
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#define MOS_READ 0x0D |
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|
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/* Requests */ |
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#define MCS_RD_RTYPE 0xC0 |
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#define MCS_WR_RTYPE 0x40 |
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#define MCS_RDREQ 0x0D |
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#define MCS_WRREQ 0x0E |
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#define MCS_CTRL_TIMEOUT 500 |
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#define VENDOR_READ_LENGTH (0x01) |
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|
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#define MAX_NAME_LEN 64 |
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|
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#define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
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#define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ |
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|
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/* For higher baud Rates use TIOCEXBAUD */ |
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#define TIOCEXBAUD 0x5462 |
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|
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/* |
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* Vendor id and device id defines |
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* |
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* NOTE: Do not add new defines, add entries directly to the id_table instead. |
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*/ |
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#define USB_VENDOR_ID_BANDB 0x0856 |
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#define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 |
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#define BANDB_DEVICE_ID_USO9ML2_2P 0xBC00 |
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#define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 |
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#define BANDB_DEVICE_ID_USO9ML2_4P 0xBC01 |
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#define BANDB_DEVICE_ID_US9ML2_2 0xAC29 |
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#define BANDB_DEVICE_ID_US9ML2_4 0xAC30 |
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#define BANDB_DEVICE_ID_USPTL4_2 0xAC31 |
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#define BANDB_DEVICE_ID_USPTL4_4 0xAC32 |
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#define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 |
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#define BANDB_DEVICE_ID_USOPTL4_2P 0xBC02 |
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#define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 |
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#define BANDB_DEVICE_ID_USOPTL4_4P 0xBC03 |
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#define BANDB_DEVICE_ID_USOPTL2_4 0xAC24 |
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|
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/* Interrupt Routine Defines */ |
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|
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#define SERIAL_IIR_RLS 0x06 |
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#define SERIAL_IIR_MS 0x00 |
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|
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/* |
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* Emulation of the bit mask on the LINE STATUS REGISTER. |
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*/ |
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#define SERIAL_LSR_DR 0x0001 |
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#define SERIAL_LSR_OE 0x0002 |
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#define SERIAL_LSR_PE 0x0004 |
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#define SERIAL_LSR_FE 0x0008 |
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#define SERIAL_LSR_BI 0x0010 |
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|
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#define MOS_MSR_DELTA_CTS 0x10 |
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#define MOS_MSR_DELTA_DSR 0x20 |
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#define MOS_MSR_DELTA_RI 0x40 |
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#define MOS_MSR_DELTA_CD 0x80 |
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|
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/* Serial Port register Address */ |
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#define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) |
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#define FIFO_CONTROL_REGISTER ((__u16)(0x02)) |
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#define LINE_CONTROL_REGISTER ((__u16)(0x03)) |
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#define MODEM_CONTROL_REGISTER ((__u16)(0x04)) |
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#define LINE_STATUS_REGISTER ((__u16)(0x05)) |
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#define MODEM_STATUS_REGISTER ((__u16)(0x06)) |
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#define SCRATCH_PAD_REGISTER ((__u16)(0x07)) |
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#define DIVISOR_LATCH_LSB ((__u16)(0x00)) |
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#define DIVISOR_LATCH_MSB ((__u16)(0x01)) |
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|
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#define CLK_MULTI_REGISTER ((__u16)(0x02)) |
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#define CLK_START_VALUE_REGISTER ((__u16)(0x03)) |
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#define GPIO_REGISTER ((__u16)(0x07)) |
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|
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#define SERIAL_LCR_DLAB ((__u16)(0x0080)) |
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|
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/* |
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* URB POOL related defines |
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*/ |
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#define NUM_URBS 16 /* URB Count */ |
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#define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ |
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|
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/* LED on/off milliseconds*/ |
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#define LED_ON_MS 500 |
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#define LED_OFF_MS 500 |
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|
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enum mos7840_flag { |
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MOS7840_FLAG_LED_BUSY, |
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}; |
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|
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#define MCS_PORT_MASK GENMASK(2, 0) |
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#define MCS_PORTS(nr) ((nr) & MCS_PORT_MASK) |
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#define MCS_LED BIT(3) |
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|
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#define MCS_DEVICE(vid, pid, flags) \ |
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USB_DEVICE((vid), (pid)), .driver_info = (flags) |
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|
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static const struct usb_device_id id_table[] = { |
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{ MCS_DEVICE(0x0557, 0x2011, MCS_PORTS(4)) }, /* ATEN UC2324 */ |
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{ MCS_DEVICE(0x0557, 0x7820, MCS_PORTS(2)) }, /* ATEN UC2322 */ |
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{ MCS_DEVICE(0x110a, 0x2210, MCS_PORTS(2)) }, /* Moxa UPort 2210 */ |
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{ MCS_DEVICE(0x9710, 0x7810, MCS_PORTS(1) | MCS_LED) }, /* ASIX MCS7810 */ |
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{ MCS_DEVICE(0x9710, 0x7820, MCS_PORTS(2)) }, /* MosChip MCS7820 */ |
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{ MCS_DEVICE(0x9710, 0x7840, MCS_PORTS(4)) }, /* MosChip MCS7840 */ |
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{ MCS_DEVICE(0x9710, 0x7843, MCS_PORTS(3)) }, /* ASIX MCS7840 3 port */ |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P) }, |
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{ USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4) }, |
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{} /* terminating entry */ |
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}; |
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MODULE_DEVICE_TABLE(usb, id_table); |
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|
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/* This structure holds all of the local port information */ |
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|
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struct moschip_port { |
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int port_num; /*Actual port number in the device(1,2,etc) */ |
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struct urb *read_urb; /* read URB for this port */ |
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__u8 shadowLCR; /* last LCR value received */ |
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__u8 shadowMCR; /* last MCR value received */ |
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struct usb_serial_port *port; /* loop back to the owner of this object */ |
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|
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/* Offsets */ |
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__u8 SpRegOffset; |
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__u8 ControlRegOffset; |
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__u8 DcrRegOffset; |
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|
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spinlock_t pool_lock; |
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struct urb *write_urb_pool[NUM_URBS]; |
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char busy[NUM_URBS]; |
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bool read_urb_busy; |
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|
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/* For device(s) with LED indicator */ |
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bool has_led; |
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struct timer_list led_timer1; /* Timer for LED on */ |
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struct timer_list led_timer2; /* Timer for LED off */ |
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struct urb *led_urb; |
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struct usb_ctrlrequest *led_dr; |
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|
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unsigned long flags; |
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}; |
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|
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/* |
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* mos7840_set_reg_sync |
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* To set the Control register by calling usb_fill_control_urb function |
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* by passing usb_sndctrlpipe function as parameter. |
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*/ |
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|
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static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, |
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__u16 val) |
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{ |
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struct usb_device *dev = port->serial->dev; |
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val = val & 0x00ff; |
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dev_dbg(&port->dev, "mos7840_set_reg_sync offset is %x, value %x\n", reg, val); |
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return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, |
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MCS_WR_RTYPE, val, reg, NULL, 0, |
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MOS_WDR_TIMEOUT); |
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} |
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|
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/* |
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* mos7840_get_reg_sync |
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* To set the Uart register by calling usb_fill_control_urb function by |
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* passing usb_rcvctrlpipe function as parameter. |
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*/ |
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|
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static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, |
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__u16 *val) |
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{ |
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struct usb_device *dev = port->serial->dev; |
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int ret = 0; |
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u8 *buf; |
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buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); |
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if (!buf) |
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return -ENOMEM; |
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ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, |
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MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, |
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MOS_WDR_TIMEOUT); |
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if (ret < VENDOR_READ_LENGTH) { |
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if (ret >= 0) |
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ret = -EIO; |
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goto out; |
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} |
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*val = buf[0]; |
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dev_dbg(&port->dev, "%s offset is %x, return val %x\n", __func__, reg, *val); |
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out: |
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kfree(buf); |
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return ret; |
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} |
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|
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/* |
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* mos7840_set_uart_reg |
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* To set the Uart register by calling usb_fill_control_urb function by |
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* passing usb_sndctrlpipe function as parameter. |
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*/ |
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|
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static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, |
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__u16 val) |
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{ |
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|
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struct usb_device *dev = port->serial->dev; |
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val = val & 0x00ff; |
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/* For the UART control registers, the application number need |
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to be Or'ed */ |
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if (port->serial->num_ports == 2 && port->port_number != 0) |
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val |= ((__u16)port->port_number + 2) << 8; |
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else |
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val |= ((__u16)port->port_number + 1) << 8; |
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dev_dbg(&port->dev, "%s application number is %x\n", __func__, val); |
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return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, |
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MCS_WR_RTYPE, val, reg, NULL, 0, |
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MOS_WDR_TIMEOUT); |
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|
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} |
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|
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/* |
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* mos7840_get_uart_reg |
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* To set the Control register by calling usb_fill_control_urb function |
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* by passing usb_rcvctrlpipe function as parameter. |
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*/ |
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static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, |
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__u16 *val) |
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{ |
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struct usb_device *dev = port->serial->dev; |
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int ret = 0; |
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__u16 Wval; |
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u8 *buf; |
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|
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buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); |
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if (!buf) |
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return -ENOMEM; |
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|
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/* Wval is same as application number */ |
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if (port->serial->num_ports == 2 && port->port_number != 0) |
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Wval = ((__u16)port->port_number + 2) << 8; |
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else |
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Wval = ((__u16)port->port_number + 1) << 8; |
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dev_dbg(&port->dev, "%s application number is %x\n", __func__, Wval); |
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ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, |
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MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, |
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MOS_WDR_TIMEOUT); |
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if (ret < VENDOR_READ_LENGTH) { |
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if (ret >= 0) |
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ret = -EIO; |
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goto out; |
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} |
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*val = buf[0]; |
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out: |
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kfree(buf); |
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return ret; |
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} |
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|
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static void mos7840_dump_serial_port(struct usb_serial_port *port, |
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struct moschip_port *mos7840_port) |
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{ |
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|
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dev_dbg(&port->dev, "SpRegOffset is %2x\n", mos7840_port->SpRegOffset); |
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dev_dbg(&port->dev, "ControlRegOffset is %2x\n", mos7840_port->ControlRegOffset); |
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dev_dbg(&port->dev, "DCRRegOffset is %2x\n", mos7840_port->DcrRegOffset); |
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|
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} |
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|
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/************************************************************************/ |
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/************************************************************************/ |
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/* U S B C A L L B A C K F U N C T I O N S */ |
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/* U S B C A L L B A C K F U N C T I O N S */ |
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/************************************************************************/ |
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/************************************************************************/ |
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|
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static void mos7840_set_led_callback(struct urb *urb) |
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{ |
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switch (urb->status) { |
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case 0: |
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/* Success */ |
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break; |
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case -ECONNRESET: |
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case -ENOENT: |
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case -ESHUTDOWN: |
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/* This urb is terminated, clean up */ |
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dev_dbg(&urb->dev->dev, "%s - urb shutting down: %d\n", |
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__func__, urb->status); |
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break; |
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default: |
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dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", |
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__func__, urb->status); |
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} |
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} |
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|
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static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, |
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__u16 reg) |
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{ |
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struct usb_device *dev = mcs->port->serial->dev; |
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struct usb_ctrlrequest *dr = mcs->led_dr; |
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|
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dr->bRequestType = MCS_WR_RTYPE; |
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dr->bRequest = MCS_WRREQ; |
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dr->wValue = cpu_to_le16(wval); |
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dr->wIndex = cpu_to_le16(reg); |
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dr->wLength = cpu_to_le16(0); |
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|
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usb_fill_control_urb(mcs->led_urb, dev, usb_sndctrlpipe(dev, 0), |
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(unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL); |
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|
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usb_submit_urb(mcs->led_urb, GFP_ATOMIC); |
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} |
|
|
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static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg, |
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__u16 val) |
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{ |
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struct usb_device *dev = port->serial->dev; |
|
|
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usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, |
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val, reg, NULL, 0, MOS_WDR_TIMEOUT); |
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} |
|
|
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static void mos7840_led_off(struct timer_list *t) |
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{ |
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struct moschip_port *mcs = from_timer(mcs, t, led_timer1); |
|
|
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/* Turn off LED */ |
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mos7840_set_led_async(mcs, 0x0300, MODEM_CONTROL_REGISTER); |
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mod_timer(&mcs->led_timer2, |
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jiffies + msecs_to_jiffies(LED_OFF_MS)); |
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} |
|
|
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static void mos7840_led_flag_off(struct timer_list *t) |
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{ |
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struct moschip_port *mcs = from_timer(mcs, t, led_timer2); |
|
|
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clear_bit_unlock(MOS7840_FLAG_LED_BUSY, &mcs->flags); |
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} |
|
|
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static void mos7840_led_activity(struct usb_serial_port *port) |
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{ |
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struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
|
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if (test_and_set_bit_lock(MOS7840_FLAG_LED_BUSY, &mos7840_port->flags)) |
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return; |
|
|
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mos7840_set_led_async(mos7840_port, 0x0301, MODEM_CONTROL_REGISTER); |
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mod_timer(&mos7840_port->led_timer1, |
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jiffies + msecs_to_jiffies(LED_ON_MS)); |
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} |
|
|
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/***************************************************************************** |
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* mos7840_bulk_in_callback |
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* this is the callback function for when we have received data on the |
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* bulk in endpoint. |
|
*****************************************************************************/ |
|
|
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static void mos7840_bulk_in_callback(struct urb *urb) |
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{ |
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struct moschip_port *mos7840_port = urb->context; |
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struct usb_serial_port *port = mos7840_port->port; |
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int retval; |
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unsigned char *data; |
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int status = urb->status; |
|
|
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if (status) { |
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dev_dbg(&urb->dev->dev, "nonzero read bulk status received: %d\n", status); |
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mos7840_port->read_urb_busy = false; |
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return; |
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} |
|
|
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data = urb->transfer_buffer; |
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usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
|
|
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if (urb->actual_length) { |
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struct tty_port *tport = &mos7840_port->port->port; |
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tty_insert_flip_string(tport, data, urb->actual_length); |
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tty_flip_buffer_push(tport); |
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port->icount.rx += urb->actual_length; |
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dev_dbg(&port->dev, "icount.rx is %d:\n", port->icount.rx); |
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} |
|
|
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if (mos7840_port->has_led) |
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mos7840_led_activity(port); |
|
|
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mos7840_port->read_urb_busy = true; |
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retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
|
|
|
if (retval) { |
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dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, retval = %d\n", retval); |
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mos7840_port->read_urb_busy = false; |
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} |
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} |
|
|
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/***************************************************************************** |
|
* mos7840_bulk_out_data_callback |
|
* this is the callback function for when we have finished sending |
|
* serial data on the bulk out endpoint. |
|
*****************************************************************************/ |
|
|
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static void mos7840_bulk_out_data_callback(struct urb *urb) |
|
{ |
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struct moschip_port *mos7840_port = urb->context; |
|
struct usb_serial_port *port = mos7840_port->port; |
|
int status = urb->status; |
|
unsigned long flags; |
|
int i; |
|
|
|
spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
|
for (i = 0; i < NUM_URBS; i++) { |
|
if (urb == mos7840_port->write_urb_pool[i]) { |
|
mos7840_port->busy[i] = 0; |
|
break; |
|
} |
|
} |
|
spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
|
|
|
if (status) { |
|
dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status); |
|
return; |
|
} |
|
|
|
tty_port_tty_wakeup(&port->port); |
|
|
|
} |
|
|
|
/************************************************************************/ |
|
/* D R I V E R T T Y I N T E R F A C E F U N C T I O N S */ |
|
/************************************************************************/ |
|
|
|
/***************************************************************************** |
|
* mos7840_open |
|
* this function is called by the tty driver when a port is opened |
|
* If successful, we return 0 |
|
* Otherwise we return a negative error number. |
|
*****************************************************************************/ |
|
|
|
static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
|
{ |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
struct usb_serial *serial = port->serial; |
|
int response; |
|
int j; |
|
struct urb *urb; |
|
__u16 Data; |
|
int status; |
|
|
|
usb_clear_halt(serial->dev, port->write_urb->pipe); |
|
usb_clear_halt(serial->dev, port->read_urb->pipe); |
|
|
|
/* Initialising the write urb pool */ |
|
for (j = 0; j < NUM_URBS; ++j) { |
|
urb = usb_alloc_urb(0, GFP_KERNEL); |
|
mos7840_port->write_urb_pool[j] = urb; |
|
if (!urb) |
|
continue; |
|
|
|
urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
|
GFP_KERNEL); |
|
if (!urb->transfer_buffer) { |
|
usb_free_urb(urb); |
|
mos7840_port->write_urb_pool[j] = NULL; |
|
continue; |
|
} |
|
} |
|
|
|
/***************************************************************************** |
|
* Initialize MCS7840 -- Write Init values to corresponding Registers |
|
* |
|
* Register Index |
|
* 1 : IER |
|
* 2 : FCR |
|
* 3 : LCR |
|
* 4 : MCR |
|
* |
|
* 0x08 : SP1/2 Control Reg |
|
*****************************************************************************/ |
|
|
|
/* NEED to check the following Block */ |
|
|
|
Data = 0x0; |
|
status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "Reading Spreg failed\n"); |
|
goto err; |
|
} |
|
Data |= 0x80; |
|
status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "writing Spreg failed\n"); |
|
goto err; |
|
} |
|
|
|
Data &= ~0x80; |
|
status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "writing Spreg failed\n"); |
|
goto err; |
|
} |
|
/* End of block to be checked */ |
|
|
|
Data = 0x0; |
|
status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
|
&Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "Reading Controlreg failed\n"); |
|
goto err; |
|
} |
|
Data |= 0x08; /* Driver done bit */ |
|
Data |= 0x20; /* rx_disable */ |
|
status = mos7840_set_reg_sync(port, |
|
mos7840_port->ControlRegOffset, Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "writing Controlreg failed\n"); |
|
goto err; |
|
} |
|
/* do register settings here */ |
|
/* Set all regs to the device default values. */ |
|
/*********************************** |
|
* First Disable all interrupts. |
|
***********************************/ |
|
Data = 0x00; |
|
status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "disabling interrupts failed\n"); |
|
goto err; |
|
} |
|
/* Set FIFO_CONTROL_REGISTER to the default value */ |
|
Data = 0x00; |
|
status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
|
goto err; |
|
} |
|
|
|
Data = 0xcf; |
|
status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
|
goto err; |
|
} |
|
|
|
Data = 0x03; |
|
status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
|
mos7840_port->shadowLCR = Data; |
|
|
|
Data = 0x0b; |
|
status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
|
mos7840_port->shadowMCR = Data; |
|
|
|
Data = 0x00; |
|
status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
|
mos7840_port->shadowLCR = Data; |
|
|
|
Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
|
status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
|
|
|
Data = 0x0c; |
|
status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
|
|
|
Data = 0x0; |
|
status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
|
|
|
Data = 0x00; |
|
status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
|
|
|
Data = Data & ~SERIAL_LCR_DLAB; |
|
status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
|
mos7840_port->shadowLCR = Data; |
|
|
|
/* clearing Bulkin and Bulkout Fifo */ |
|
Data = 0x0; |
|
status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
|
|
|
Data = Data | 0x0c; |
|
status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
|
|
|
Data = Data & ~0x0c; |
|
status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
|
/* Finally enable all interrupts */ |
|
Data = 0x0c; |
|
status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
|
|
|
/* clearing rx_disable */ |
|
Data = 0x0; |
|
status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
|
&Data); |
|
Data = Data & ~0x20; |
|
status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
|
Data); |
|
|
|
/* rx_negate */ |
|
Data = 0x0; |
|
status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
|
&Data); |
|
Data = Data | 0x10; |
|
status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
|
Data); |
|
|
|
dev_dbg(&port->dev, "port number is %d\n", port->port_number); |
|
dev_dbg(&port->dev, "minor number is %d\n", port->minor); |
|
dev_dbg(&port->dev, "Bulkin endpoint is %d\n", port->bulk_in_endpointAddress); |
|
dev_dbg(&port->dev, "BulkOut endpoint is %d\n", port->bulk_out_endpointAddress); |
|
dev_dbg(&port->dev, "Interrupt endpoint is %d\n", port->interrupt_in_endpointAddress); |
|
dev_dbg(&port->dev, "port's number in the device is %d\n", mos7840_port->port_num); |
|
mos7840_port->read_urb = port->read_urb; |
|
|
|
/* set up our bulk in urb */ |
|
if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { |
|
usb_fill_bulk_urb(mos7840_port->read_urb, |
|
serial->dev, |
|
usb_rcvbulkpipe(serial->dev, |
|
(port->bulk_in_endpointAddress) + 2), |
|
port->bulk_in_buffer, |
|
mos7840_port->read_urb->transfer_buffer_length, |
|
mos7840_bulk_in_callback, mos7840_port); |
|
} else { |
|
usb_fill_bulk_urb(mos7840_port->read_urb, |
|
serial->dev, |
|
usb_rcvbulkpipe(serial->dev, |
|
port->bulk_in_endpointAddress), |
|
port->bulk_in_buffer, |
|
mos7840_port->read_urb->transfer_buffer_length, |
|
mos7840_bulk_in_callback, mos7840_port); |
|
} |
|
|
|
dev_dbg(&port->dev, "%s: bulkin endpoint is %d\n", __func__, port->bulk_in_endpointAddress); |
|
mos7840_port->read_urb_busy = true; |
|
response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
|
if (response) { |
|
dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
|
__func__, response); |
|
mos7840_port->read_urb_busy = false; |
|
} |
|
|
|
/* initialize our port settings */ |
|
/* Must set to enable ints! */ |
|
mos7840_port->shadowMCR = MCR_MASTER_IE; |
|
|
|
return 0; |
|
err: |
|
for (j = 0; j < NUM_URBS; ++j) { |
|
urb = mos7840_port->write_urb_pool[j]; |
|
if (!urb) |
|
continue; |
|
kfree(urb->transfer_buffer); |
|
usb_free_urb(urb); |
|
} |
|
return status; |
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_chars_in_buffer |
|
* this function is called by the tty driver when it wants to know how many |
|
* bytes of data we currently have outstanding in the port (data that has |
|
* been written, but hasn't made it out the port yet) |
|
* If successful, we return the number of bytes left to be written in the |
|
* system, |
|
* Otherwise we return zero. |
|
*****************************************************************************/ |
|
|
|
static int mos7840_chars_in_buffer(struct tty_struct *tty) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
int i; |
|
int chars = 0; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
|
for (i = 0; i < NUM_URBS; ++i) { |
|
if (mos7840_port->busy[i]) { |
|
struct urb *urb = mos7840_port->write_urb_pool[i]; |
|
chars += urb->transfer_buffer_length; |
|
} |
|
} |
|
spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
|
dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); |
|
return chars; |
|
|
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_close |
|
* this function is called by the tty driver when a port is closed |
|
*****************************************************************************/ |
|
|
|
static void mos7840_close(struct usb_serial_port *port) |
|
{ |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
int j; |
|
__u16 Data; |
|
|
|
for (j = 0; j < NUM_URBS; ++j) |
|
usb_kill_urb(mos7840_port->write_urb_pool[j]); |
|
|
|
/* Freeing Write URBs */ |
|
for (j = 0; j < NUM_URBS; ++j) { |
|
if (mos7840_port->write_urb_pool[j]) { |
|
kfree(mos7840_port->write_urb_pool[j]->transfer_buffer); |
|
usb_free_urb(mos7840_port->write_urb_pool[j]); |
|
} |
|
} |
|
|
|
usb_kill_urb(mos7840_port->read_urb); |
|
mos7840_port->read_urb_busy = false; |
|
|
|
Data = 0x0; |
|
mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
|
|
|
Data = 0x00; |
|
mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_break |
|
* this function sends a break to the port |
|
*****************************************************************************/ |
|
static void mos7840_break(struct tty_struct *tty, int break_state) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
unsigned char data; |
|
|
|
if (break_state == -1) |
|
data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
|
else |
|
data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
|
|
|
/* FIXME: no locking on shadowLCR anywhere in driver */ |
|
mos7840_port->shadowLCR = data; |
|
dev_dbg(&port->dev, "%s mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
|
mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, |
|
mos7840_port->shadowLCR); |
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_write_room |
|
* this function is called by the tty driver when it wants to know how many |
|
* bytes of data we can accept for a specific port. |
|
* If successful, we return the amount of room that we have for this port |
|
* Otherwise we return a negative error number. |
|
*****************************************************************************/ |
|
|
|
static int mos7840_write_room(struct tty_struct *tty) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
int i; |
|
int room = 0; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
|
for (i = 0; i < NUM_URBS; ++i) { |
|
if (!mos7840_port->busy[i]) |
|
room += URB_TRANSFER_BUFFER_SIZE; |
|
} |
|
spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
|
|
|
room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
|
dev_dbg(&mos7840_port->port->dev, "%s - returns %d\n", __func__, room); |
|
return room; |
|
|
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_write |
|
* this function is called by the tty driver when data should be written to |
|
* the port. |
|
* If successful, we return the number of bytes written, otherwise we |
|
* return a negative error number. |
|
*****************************************************************************/ |
|
|
|
static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
|
const unsigned char *data, int count) |
|
{ |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
struct usb_serial *serial = port->serial; |
|
int status; |
|
int i; |
|
int bytes_sent = 0; |
|
int transfer_size; |
|
unsigned long flags; |
|
struct urb *urb; |
|
/* __u16 Data; */ |
|
const unsigned char *current_position = data; |
|
|
|
/* try to find a free urb in the list */ |
|
urb = NULL; |
|
|
|
spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
|
for (i = 0; i < NUM_URBS; ++i) { |
|
if (!mos7840_port->busy[i]) { |
|
mos7840_port->busy[i] = 1; |
|
urb = mos7840_port->write_urb_pool[i]; |
|
dev_dbg(&port->dev, "URB:%d\n", i); |
|
break; |
|
} |
|
} |
|
spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
|
|
|
if (urb == NULL) { |
|
dev_dbg(&port->dev, "%s - no more free urbs\n", __func__); |
|
goto exit; |
|
} |
|
|
|
if (urb->transfer_buffer == NULL) { |
|
urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
|
GFP_ATOMIC); |
|
if (!urb->transfer_buffer) { |
|
bytes_sent = -ENOMEM; |
|
goto exit; |
|
} |
|
} |
|
transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); |
|
|
|
memcpy(urb->transfer_buffer, current_position, transfer_size); |
|
|
|
/* fill urb with data and submit */ |
|
if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { |
|
usb_fill_bulk_urb(urb, |
|
serial->dev, |
|
usb_sndbulkpipe(serial->dev, |
|
(port->bulk_out_endpointAddress) + 2), |
|
urb->transfer_buffer, |
|
transfer_size, |
|
mos7840_bulk_out_data_callback, mos7840_port); |
|
} else { |
|
usb_fill_bulk_urb(urb, |
|
serial->dev, |
|
usb_sndbulkpipe(serial->dev, |
|
port->bulk_out_endpointAddress), |
|
urb->transfer_buffer, |
|
transfer_size, |
|
mos7840_bulk_out_data_callback, mos7840_port); |
|
} |
|
|
|
dev_dbg(&port->dev, "bulkout endpoint is %d\n", port->bulk_out_endpointAddress); |
|
|
|
if (mos7840_port->has_led) |
|
mos7840_led_activity(port); |
|
|
|
/* send it down the pipe */ |
|
status = usb_submit_urb(urb, GFP_ATOMIC); |
|
|
|
if (status) { |
|
mos7840_port->busy[i] = 0; |
|
dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " |
|
"with status = %d\n", __func__, status); |
|
bytes_sent = status; |
|
goto exit; |
|
} |
|
bytes_sent = transfer_size; |
|
port->icount.tx += transfer_size; |
|
dev_dbg(&port->dev, "icount.tx is %d:\n", port->icount.tx); |
|
exit: |
|
return bytes_sent; |
|
|
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_throttle |
|
* this function is called by the tty driver when it wants to stop the data |
|
* being read from the port. |
|
*****************************************************************************/ |
|
|
|
static void mos7840_throttle(struct tty_struct *tty) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
int status; |
|
|
|
/* if we are implementing XON/XOFF, send the stop character */ |
|
if (I_IXOFF(tty)) { |
|
unsigned char stop_char = STOP_CHAR(tty); |
|
status = mos7840_write(tty, port, &stop_char, 1); |
|
if (status <= 0) |
|
return; |
|
} |
|
/* if we are implementing RTS/CTS, toggle that line */ |
|
if (C_CRTSCTS(tty)) { |
|
mos7840_port->shadowMCR &= ~MCR_RTS; |
|
status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
|
mos7840_port->shadowMCR); |
|
if (status < 0) |
|
return; |
|
} |
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_unthrottle |
|
* this function is called by the tty driver when it wants to resume |
|
* the data being read from the port (called after mos7840_throttle is |
|
* called) |
|
*****************************************************************************/ |
|
static void mos7840_unthrottle(struct tty_struct *tty) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
int status; |
|
|
|
/* if we are implementing XON/XOFF, send the start character */ |
|
if (I_IXOFF(tty)) { |
|
unsigned char start_char = START_CHAR(tty); |
|
status = mos7840_write(tty, port, &start_char, 1); |
|
if (status <= 0) |
|
return; |
|
} |
|
|
|
/* if we are implementing RTS/CTS, toggle that line */ |
|
if (C_CRTSCTS(tty)) { |
|
mos7840_port->shadowMCR |= MCR_RTS; |
|
status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
|
mos7840_port->shadowMCR); |
|
if (status < 0) |
|
return; |
|
} |
|
} |
|
|
|
static int mos7840_tiocmget(struct tty_struct *tty) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
unsigned int result; |
|
__u16 msr; |
|
__u16 mcr; |
|
int status; |
|
|
|
status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); |
|
if (status < 0) |
|
return -EIO; |
|
status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); |
|
if (status < 0) |
|
return -EIO; |
|
result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) |
|
| ((mcr & MCR_RTS) ? TIOCM_RTS : 0) |
|
| ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) |
|
| ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) |
|
| ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) |
|
| ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) |
|
| ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); |
|
|
|
dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); |
|
|
|
return result; |
|
} |
|
|
|
static int mos7840_tiocmset(struct tty_struct *tty, |
|
unsigned int set, unsigned int clear) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
unsigned int mcr; |
|
int status; |
|
|
|
/* FIXME: What locks the port registers ? */ |
|
mcr = mos7840_port->shadowMCR; |
|
if (clear & TIOCM_RTS) |
|
mcr &= ~MCR_RTS; |
|
if (clear & TIOCM_DTR) |
|
mcr &= ~MCR_DTR; |
|
if (clear & TIOCM_LOOP) |
|
mcr &= ~MCR_LOOPBACK; |
|
|
|
if (set & TIOCM_RTS) |
|
mcr |= MCR_RTS; |
|
if (set & TIOCM_DTR) |
|
mcr |= MCR_DTR; |
|
if (set & TIOCM_LOOP) |
|
mcr |= MCR_LOOPBACK; |
|
|
|
mos7840_port->shadowMCR = mcr; |
|
|
|
status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "setting MODEM_CONTROL_REGISTER Failed\n"); |
|
return status; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_calc_baud_rate_divisor |
|
* this function calculates the proper baud rate divisor for the specified |
|
* baud rate. |
|
*****************************************************************************/ |
|
static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port, |
|
int baudRate, int *divisor, |
|
__u16 *clk_sel_val) |
|
{ |
|
dev_dbg(&port->dev, "%s - %d\n", __func__, baudRate); |
|
|
|
if (baudRate <= 115200) { |
|
*divisor = 115200 / baudRate; |
|
*clk_sel_val = 0x0; |
|
} |
|
if ((baudRate > 115200) && (baudRate <= 230400)) { |
|
*divisor = 230400 / baudRate; |
|
*clk_sel_val = 0x10; |
|
} else if ((baudRate > 230400) && (baudRate <= 403200)) { |
|
*divisor = 403200 / baudRate; |
|
*clk_sel_val = 0x20; |
|
} else if ((baudRate > 403200) && (baudRate <= 460800)) { |
|
*divisor = 460800 / baudRate; |
|
*clk_sel_val = 0x30; |
|
} else if ((baudRate > 460800) && (baudRate <= 806400)) { |
|
*divisor = 806400 / baudRate; |
|
*clk_sel_val = 0x40; |
|
} else if ((baudRate > 806400) && (baudRate <= 921600)) { |
|
*divisor = 921600 / baudRate; |
|
*clk_sel_val = 0x50; |
|
} else if ((baudRate > 921600) && (baudRate <= 1572864)) { |
|
*divisor = 1572864 / baudRate; |
|
*clk_sel_val = 0x60; |
|
} else if ((baudRate > 1572864) && (baudRate <= 3145728)) { |
|
*divisor = 3145728 / baudRate; |
|
*clk_sel_val = 0x70; |
|
} |
|
return 0; |
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_send_cmd_write_baud_rate |
|
* this function sends the proper command to change the baud rate of the |
|
* specified port. |
|
*****************************************************************************/ |
|
|
|
static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, |
|
int baudRate) |
|
{ |
|
struct usb_serial_port *port = mos7840_port->port; |
|
int divisor = 0; |
|
int status; |
|
__u16 Data; |
|
__u16 clk_sel_val; |
|
|
|
dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudRate); |
|
/* reset clk_uart_sel in spregOffset */ |
|
if (baudRate > 115200) { |
|
#ifdef HW_flow_control |
|
/* NOTE: need to see the pther register to modify */ |
|
/* setting h/w flow control bit to 1 */ |
|
Data = 0x2b; |
|
mos7840_port->shadowMCR = Data; |
|
status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
|
Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
|
return -1; |
|
} |
|
#endif |
|
|
|
} else { |
|
#ifdef HW_flow_control |
|
/* setting h/w flow control bit to 0 */ |
|
Data = 0xb; |
|
mos7840_port->shadowMCR = Data; |
|
status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
|
Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
|
return -1; |
|
} |
|
#endif |
|
|
|
} |
|
|
|
if (1) { /* baudRate <= 115200) */ |
|
clk_sel_val = 0x0; |
|
Data = 0x0; |
|
status = mos7840_calc_baud_rate_divisor(port, baudRate, &divisor, |
|
&clk_sel_val); |
|
status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
|
&Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "reading spreg failed in set_serial_baud\n"); |
|
return -1; |
|
} |
|
Data = (Data & 0x8f) | clk_sel_val; |
|
status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
|
Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
|
return -1; |
|
} |
|
/* Calculate the Divisor */ |
|
|
|
if (status) { |
|
dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
|
return status; |
|
} |
|
/* Enable access to divisor latch */ |
|
Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; |
|
mos7840_port->shadowLCR = Data; |
|
mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
|
|
|
/* Write the divisor */ |
|
Data = (unsigned char)(divisor & 0xff); |
|
dev_dbg(&port->dev, "set_serial_baud Value to write DLL is %x\n", Data); |
|
mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
|
|
|
Data = (unsigned char)((divisor & 0xff00) >> 8); |
|
dev_dbg(&port->dev, "set_serial_baud Value to write DLM is %x\n", Data); |
|
mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
|
|
|
/* Disable access to divisor latch */ |
|
Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; |
|
mos7840_port->shadowLCR = Data; |
|
mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
|
|
|
} |
|
return status; |
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_change_port_settings |
|
* This routine is called to set the UART on the device to match |
|
* the specified new settings. |
|
*****************************************************************************/ |
|
|
|
static void mos7840_change_port_settings(struct tty_struct *tty, |
|
struct moschip_port *mos7840_port, struct ktermios *old_termios) |
|
{ |
|
struct usb_serial_port *port = mos7840_port->port; |
|
int baud; |
|
unsigned cflag; |
|
__u8 lData; |
|
__u8 lParity; |
|
__u8 lStop; |
|
int status; |
|
__u16 Data; |
|
|
|
lData = LCR_BITS_8; |
|
lStop = LCR_STOP_1; |
|
lParity = LCR_PAR_NONE; |
|
|
|
cflag = tty->termios.c_cflag; |
|
|
|
/* Change the number of bits */ |
|
switch (cflag & CSIZE) { |
|
case CS5: |
|
lData = LCR_BITS_5; |
|
break; |
|
|
|
case CS6: |
|
lData = LCR_BITS_6; |
|
break; |
|
|
|
case CS7: |
|
lData = LCR_BITS_7; |
|
break; |
|
|
|
default: |
|
case CS8: |
|
lData = LCR_BITS_8; |
|
break; |
|
} |
|
|
|
/* Change the Parity bit */ |
|
if (cflag & PARENB) { |
|
if (cflag & PARODD) { |
|
lParity = LCR_PAR_ODD; |
|
dev_dbg(&port->dev, "%s - parity = odd\n", __func__); |
|
} else { |
|
lParity = LCR_PAR_EVEN; |
|
dev_dbg(&port->dev, "%s - parity = even\n", __func__); |
|
} |
|
|
|
} else { |
|
dev_dbg(&port->dev, "%s - parity = none\n", __func__); |
|
} |
|
|
|
if (cflag & CMSPAR) |
|
lParity = lParity | 0x20; |
|
|
|
/* Change the Stop bit */ |
|
if (cflag & CSTOPB) { |
|
lStop = LCR_STOP_2; |
|
dev_dbg(&port->dev, "%s - stop bits = 2\n", __func__); |
|
} else { |
|
lStop = LCR_STOP_1; |
|
dev_dbg(&port->dev, "%s - stop bits = 1\n", __func__); |
|
} |
|
|
|
/* Update the LCR with the correct value */ |
|
mos7840_port->shadowLCR &= |
|
~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); |
|
mos7840_port->shadowLCR |= (lData | lParity | lStop); |
|
|
|
dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is %x\n", __func__, |
|
mos7840_port->shadowLCR); |
|
/* Disable Interrupts */ |
|
Data = 0x00; |
|
mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
|
|
|
Data = 0x00; |
|
mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
|
|
|
Data = 0xcf; |
|
mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
|
|
|
/* Send the updated LCR value to the mos7840 */ |
|
Data = mos7840_port->shadowLCR; |
|
|
|
mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
|
|
|
Data = 0x00b; |
|
mos7840_port->shadowMCR = Data; |
|
mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
|
Data = 0x00b; |
|
mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
|
|
|
/* set up the MCR register and send it to the mos7840 */ |
|
|
|
mos7840_port->shadowMCR = MCR_MASTER_IE; |
|
if (cflag & CBAUD) |
|
mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
|
|
|
if (cflag & CRTSCTS) |
|
mos7840_port->shadowMCR |= (MCR_XON_ANY); |
|
else |
|
mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
|
|
|
Data = mos7840_port->shadowMCR; |
|
mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
|
|
|
/* Determine divisor based on baud rate */ |
|
baud = tty_get_baud_rate(tty); |
|
|
|
if (!baud) { |
|
/* pick a default, any default... */ |
|
dev_dbg(&port->dev, "%s", "Picked default baud...\n"); |
|
baud = 9600; |
|
} |
|
|
|
dev_dbg(&port->dev, "%s - baud rate = %d\n", __func__, baud); |
|
status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
|
|
|
/* Enable Interrupts */ |
|
Data = 0x0c; |
|
mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
|
|
|
if (!mos7840_port->read_urb_busy) { |
|
mos7840_port->read_urb_busy = true; |
|
status = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
|
if (status) { |
|
dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
|
status); |
|
mos7840_port->read_urb_busy = false; |
|
} |
|
} |
|
dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, |
|
mos7840_port->shadowLCR); |
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_set_termios |
|
* this function is called by the tty driver when it wants to change |
|
* the termios structure |
|
*****************************************************************************/ |
|
|
|
static void mos7840_set_termios(struct tty_struct *tty, |
|
struct usb_serial_port *port, |
|
struct ktermios *old_termios) |
|
{ |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
int status; |
|
|
|
/* change the port settings to the new ones specified */ |
|
|
|
mos7840_change_port_settings(tty, mos7840_port, old_termios); |
|
|
|
if (!mos7840_port->read_urb_busy) { |
|
mos7840_port->read_urb_busy = true; |
|
status = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
|
if (status) { |
|
dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
|
status); |
|
mos7840_port->read_urb_busy = false; |
|
} |
|
} |
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_get_lsr_info - get line status register info |
|
* |
|
* Purpose: Let user call ioctl() to get info when the UART physically |
|
* is emptied. On bus types like RS485, the transmitter must |
|
* release the bus after transmitting. This must be done when |
|
* the transmit shift register is empty, not be done when the |
|
* transmit holding register is empty. This functionality |
|
* allows an RS485 driver to be written in user space. |
|
*****************************************************************************/ |
|
|
|
static int mos7840_get_lsr_info(struct tty_struct *tty, |
|
unsigned int __user *value) |
|
{ |
|
int count; |
|
unsigned int result = 0; |
|
|
|
count = mos7840_chars_in_buffer(tty); |
|
if (count == 0) |
|
result = TIOCSER_TEMT; |
|
|
|
if (copy_to_user(value, &result, sizeof(int))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
/***************************************************************************** |
|
* mos7840_get_serial_info |
|
* function to get information about serial port |
|
*****************************************************************************/ |
|
|
|
static int mos7840_get_serial_info(struct tty_struct *tty, |
|
struct serial_struct *ss) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
|
|
ss->type = PORT_16550A; |
|
ss->line = mos7840_port->port->minor; |
|
ss->port = mos7840_port->port->port_number; |
|
ss->irq = 0; |
|
ss->xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; |
|
ss->baud_base = 9600; |
|
ss->close_delay = 5 * HZ; |
|
ss->closing_wait = 30 * HZ; |
|
return 0; |
|
} |
|
|
|
/***************************************************************************** |
|
* SerialIoctl |
|
* this function handles any ioctl calls to the driver |
|
*****************************************************************************/ |
|
|
|
static int mos7840_ioctl(struct tty_struct *tty, |
|
unsigned int cmd, unsigned long arg) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
void __user *argp = (void __user *)arg; |
|
|
|
switch (cmd) { |
|
/* return number of bytes available */ |
|
|
|
case TIOCSERGETLSR: |
|
dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
|
return mos7840_get_lsr_info(tty, argp); |
|
|
|
default: |
|
break; |
|
} |
|
return -ENOIOCTLCMD; |
|
} |
|
|
|
/* |
|
* Check if GPO (pin 42) is connected to GPI (pin 33) as recommended by ASIX |
|
* for MCS7810 by bit-banging a 16-bit word. |
|
* |
|
* Note that GPO is really RTS of the third port so this will toggle RTS of |
|
* port two or three on two- and four-port devices. |
|
*/ |
|
static int mos7810_check(struct usb_serial *serial) |
|
{ |
|
int i, pass_count = 0; |
|
u8 *buf; |
|
__u16 data = 0, mcr_data = 0; |
|
__u16 test_pattern = 0x55AA; |
|
int res; |
|
|
|
buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); |
|
if (!buf) |
|
return 0; /* failed to identify 7810 */ |
|
|
|
/* Store MCR setting */ |
|
res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
|
MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, |
|
buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
|
if (res == VENDOR_READ_LENGTH) |
|
mcr_data = *buf; |
|
|
|
for (i = 0; i < 16; i++) { |
|
/* Send the 1-bit test pattern out to MCS7810 test pin */ |
|
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
|
MCS_WRREQ, MCS_WR_RTYPE, |
|
(0x0300 | (((test_pattern >> i) & 0x0001) << 1)), |
|
MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); |
|
|
|
/* Read the test pattern back */ |
|
res = usb_control_msg(serial->dev, |
|
usb_rcvctrlpipe(serial->dev, 0), MCS_RDREQ, |
|
MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, |
|
VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
|
if (res == VENDOR_READ_LENGTH) |
|
data = *buf; |
|
|
|
/* If this is a MCS7810 device, both test patterns must match */ |
|
if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) |
|
break; |
|
|
|
pass_count++; |
|
} |
|
|
|
/* Restore MCR setting */ |
|
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), MCS_WRREQ, |
|
MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, |
|
0, MOS_WDR_TIMEOUT); |
|
|
|
kfree(buf); |
|
|
|
if (pass_count == 16) |
|
return 1; |
|
|
|
return 0; |
|
} |
|
|
|
static int mos7840_probe(struct usb_serial *serial, |
|
const struct usb_device_id *id) |
|
{ |
|
unsigned long device_flags = id->driver_info; |
|
u8 *buf; |
|
|
|
/* Skip device-type detection if we already have device flags. */ |
|
if (device_flags) |
|
goto out; |
|
|
|
buf = kzalloc(VENDOR_READ_LENGTH, GFP_KERNEL); |
|
if (!buf) |
|
return -ENOMEM; |
|
|
|
usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
|
MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, |
|
VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
|
|
|
/* For a MCS7840 device GPIO0 must be set to 1 */ |
|
if (buf[0] & 0x01) |
|
device_flags = MCS_PORTS(4); |
|
else if (mos7810_check(serial)) |
|
device_flags = MCS_PORTS(1) | MCS_LED; |
|
else |
|
device_flags = MCS_PORTS(2); |
|
|
|
kfree(buf); |
|
out: |
|
usb_set_serial_data(serial, (void *)device_flags); |
|
|
|
return 0; |
|
} |
|
|
|
static int mos7840_calc_num_ports(struct usb_serial *serial, |
|
struct usb_serial_endpoints *epds) |
|
{ |
|
unsigned long device_flags = (unsigned long)usb_get_serial_data(serial); |
|
int num_ports = MCS_PORTS(device_flags); |
|
|
|
if (num_ports == 0 || num_ports > 4) |
|
return -ENODEV; |
|
|
|
if (epds->num_bulk_in < num_ports || epds->num_bulk_out < num_ports) { |
|
dev_err(&serial->interface->dev, "missing endpoints\n"); |
|
return -ENODEV; |
|
} |
|
|
|
return num_ports; |
|
} |
|
|
|
static int mos7840_attach(struct usb_serial *serial) |
|
{ |
|
struct device *dev = &serial->interface->dev; |
|
int status; |
|
u16 val; |
|
|
|
/* Zero Length flag enable */ |
|
val = 0x0f; |
|
status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, val); |
|
if (status < 0) |
|
dev_dbg(dev, "Writing ZLP_REG5 failed status-0x%x\n", status); |
|
else |
|
dev_dbg(dev, "ZLP_REG5 Writing success status%d\n", status); |
|
|
|
return status; |
|
} |
|
|
|
static int mos7840_port_probe(struct usb_serial_port *port) |
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{ |
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struct usb_serial *serial = port->serial; |
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unsigned long device_flags = (unsigned long)usb_get_serial_data(serial); |
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struct moschip_port *mos7840_port; |
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int status; |
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int pnum; |
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__u16 Data; |
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|
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/* we set up the pointers to the endpoints in the mos7840_open * |
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* function, as the structures aren't created yet. */ |
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|
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pnum = port->port_number; |
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|
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dev_dbg(&port->dev, "mos7840_startup: configuring port %d\n", pnum); |
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mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); |
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if (!mos7840_port) |
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return -ENOMEM; |
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|
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/* Initialize all port interrupt end point to port 0 int |
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* endpoint. Our device has only one interrupt end point |
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* common to all port */ |
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|
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mos7840_port->port = port; |
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spin_lock_init(&mos7840_port->pool_lock); |
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|
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/* minor is not initialised until later by |
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* usb-serial.c:get_free_serial() and cannot therefore be used |
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* to index device instances */ |
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mos7840_port->port_num = pnum + 1; |
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dev_dbg(&port->dev, "port->minor = %d\n", port->minor); |
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dev_dbg(&port->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num); |
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|
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if (mos7840_port->port_num == 1) { |
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mos7840_port->SpRegOffset = 0x0; |
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mos7840_port->ControlRegOffset = 0x1; |
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mos7840_port->DcrRegOffset = 0x4; |
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} else { |
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u8 phy_num = mos7840_port->port_num; |
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|
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/* Port 2 in the 2-port case uses registers of port 3 */ |
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if (serial->num_ports == 2) |
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phy_num = 3; |
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|
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mos7840_port->SpRegOffset = 0x8 + 2 * (phy_num - 2); |
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mos7840_port->ControlRegOffset = 0x9 + 2 * (phy_num - 2); |
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mos7840_port->DcrRegOffset = 0x16 + 3 * (phy_num - 2); |
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} |
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mos7840_dump_serial_port(port, mos7840_port); |
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usb_set_serial_port_data(port, mos7840_port); |
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|
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/* enable rx_disable bit in control register */ |
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status = mos7840_get_reg_sync(port, |
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mos7840_port->ControlRegOffset, &Data); |
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if (status < 0) { |
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dev_dbg(&port->dev, "Reading ControlReg failed status-0x%x\n", status); |
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goto error; |
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} else |
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dev_dbg(&port->dev, "ControlReg Reading success val is %x, status%d\n", Data, status); |
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Data |= 0x08; /* setting driver done bit */ |
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Data |= 0x04; /* sp1_bit to have cts change reflect in |
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modem status reg */ |
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|
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/* Data |= 0x20; //rx_disable bit */ |
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status = mos7840_set_reg_sync(port, |
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mos7840_port->ControlRegOffset, Data); |
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if (status < 0) { |
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dev_dbg(&port->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status); |
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goto error; |
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} else |
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dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) status%d\n", status); |
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|
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/* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 |
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and 0x24 in DCR3 */ |
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Data = 0x01; |
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status = mos7840_set_reg_sync(port, |
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(__u16) (mos7840_port->DcrRegOffset + 0), Data); |
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if (status < 0) { |
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dev_dbg(&port->dev, "Writing DCR0 failed status-0x%x\n", status); |
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goto error; |
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} else |
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dev_dbg(&port->dev, "DCR0 Writing success status%d\n", status); |
|
|
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Data = 0x05; |
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status = mos7840_set_reg_sync(port, |
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(__u16) (mos7840_port->DcrRegOffset + 1), Data); |
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if (status < 0) { |
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dev_dbg(&port->dev, "Writing DCR1 failed status-0x%x\n", status); |
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goto error; |
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} else |
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dev_dbg(&port->dev, "DCR1 Writing success status%d\n", status); |
|
|
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Data = 0x24; |
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status = mos7840_set_reg_sync(port, |
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(__u16) (mos7840_port->DcrRegOffset + 2), Data); |
|
if (status < 0) { |
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dev_dbg(&port->dev, "Writing DCR2 failed status-0x%x\n", status); |
|
goto error; |
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} else |
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dev_dbg(&port->dev, "DCR2 Writing success status%d\n", status); |
|
|
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/* write values in clkstart0x0 and clkmulti 0x20 */ |
|
Data = 0x0; |
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status = mos7840_set_reg_sync(port, CLK_START_VALUE_REGISTER, Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); |
|
goto error; |
|
} else |
|
dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status); |
|
|
|
Data = 0x20; |
|
status = mos7840_set_reg_sync(port, CLK_MULTI_REGISTER, Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "Writing CLK_MULTI_REGISTER failed status-0x%x\n", status); |
|
goto error; |
|
} else |
|
dev_dbg(&port->dev, "CLK_MULTI_REGISTER Writing success status%d\n", status); |
|
|
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/* write value 0x0 to scratchpad register */ |
|
Data = 0x00; |
|
status = mos7840_set_uart_reg(port, SCRATCH_PAD_REGISTER, Data); |
|
if (status < 0) { |
|
dev_dbg(&port->dev, "Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status); |
|
goto error; |
|
} else |
|
dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status); |
|
|
|
/* Zero Length flag register */ |
|
if ((mos7840_port->port_num != 1) && (serial->num_ports == 2)) { |
|
Data = 0xff; |
|
status = mos7840_set_reg_sync(port, |
|
(__u16) (ZLP_REG1 + |
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((__u16)mos7840_port->port_num)), Data); |
|
dev_dbg(&port->dev, "ZLIP offset %x\n", |
|
(__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num))); |
|
if (status < 0) { |
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dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status); |
|
goto error; |
|
} else |
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dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status); |
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} else { |
|
Data = 0xff; |
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status = mos7840_set_reg_sync(port, |
|
(__u16) (ZLP_REG1 + |
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((__u16)mos7840_port->port_num) - 0x1), Data); |
|
dev_dbg(&port->dev, "ZLIP offset %x\n", |
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(__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1)); |
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if (status < 0) { |
|
dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status); |
|
goto error; |
|
} else |
|
dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, status); |
|
|
|
} |
|
|
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mos7840_port->has_led = device_flags & MCS_LED; |
|
|
|
/* Initialize LED timers */ |
|
if (mos7840_port->has_led) { |
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mos7840_port->led_urb = usb_alloc_urb(0, GFP_KERNEL); |
|
mos7840_port->led_dr = kmalloc(sizeof(*mos7840_port->led_dr), |
|
GFP_KERNEL); |
|
if (!mos7840_port->led_urb || !mos7840_port->led_dr) { |
|
status = -ENOMEM; |
|
goto error; |
|
} |
|
|
|
timer_setup(&mos7840_port->led_timer1, mos7840_led_off, 0); |
|
mos7840_port->led_timer1.expires = |
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jiffies + msecs_to_jiffies(LED_ON_MS); |
|
timer_setup(&mos7840_port->led_timer2, mos7840_led_flag_off, |
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0); |
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mos7840_port->led_timer2.expires = |
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jiffies + msecs_to_jiffies(LED_OFF_MS); |
|
|
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/* Turn off LED */ |
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mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); |
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} |
|
|
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return 0; |
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error: |
|
kfree(mos7840_port->led_dr); |
|
usb_free_urb(mos7840_port->led_urb); |
|
kfree(mos7840_port); |
|
|
|
return status; |
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} |
|
|
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static void mos7840_port_remove(struct usb_serial_port *port) |
|
{ |
|
struct moschip_port *mos7840_port = usb_get_serial_port_data(port); |
|
|
|
if (mos7840_port->has_led) { |
|
/* Turn off LED */ |
|
mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); |
|
|
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del_timer_sync(&mos7840_port->led_timer1); |
|
del_timer_sync(&mos7840_port->led_timer2); |
|
|
|
usb_kill_urb(mos7840_port->led_urb); |
|
usb_free_urb(mos7840_port->led_urb); |
|
kfree(mos7840_port->led_dr); |
|
} |
|
|
|
kfree(mos7840_port); |
|
} |
|
|
|
static struct usb_serial_driver moschip7840_4port_device = { |
|
.driver = { |
|
.owner = THIS_MODULE, |
|
.name = "mos7840", |
|
}, |
|
.description = DRIVER_DESC, |
|
.id_table = id_table, |
|
.num_interrupt_in = 1, |
|
.open = mos7840_open, |
|
.close = mos7840_close, |
|
.write = mos7840_write, |
|
.write_room = mos7840_write_room, |
|
.chars_in_buffer = mos7840_chars_in_buffer, |
|
.throttle = mos7840_throttle, |
|
.unthrottle = mos7840_unthrottle, |
|
.calc_num_ports = mos7840_calc_num_ports, |
|
.probe = mos7840_probe, |
|
.attach = mos7840_attach, |
|
.ioctl = mos7840_ioctl, |
|
.get_serial = mos7840_get_serial_info, |
|
.set_termios = mos7840_set_termios, |
|
.break_ctl = mos7840_break, |
|
.tiocmget = mos7840_tiocmget, |
|
.tiocmset = mos7840_tiocmset, |
|
.get_icount = usb_serial_generic_get_icount, |
|
.port_probe = mos7840_port_probe, |
|
.port_remove = mos7840_port_remove, |
|
.read_bulk_callback = mos7840_bulk_in_callback, |
|
}; |
|
|
|
static struct usb_serial_driver * const serial_drivers[] = { |
|
&moschip7840_4port_device, NULL |
|
}; |
|
|
|
module_usb_serial_driver(serial_drivers, id_table); |
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC); |
|
MODULE_LICENSE("GPL");
|
|
|