Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify |
| 3 | * it under the terms of the GNU General Public License as published by |
| 4 | * the Free Software Foundation; either version 2 of the License, or |
| 5 | * (at your option) any later version. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | * You should have received a copy of the GNU General Public License |
| 13 | * along with this program; if not, write to the Free Software |
| 14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 15 | * |
| 16 | * Clean ups from Moschip version and a few ioctl implementations by: |
| 17 | * Paul B Schroeder <pschroeder "at" uplogix "dot" com> |
| 18 | * |
| 19 | * Originally based on drivers/usb/serial/io_edgeport.c which is: |
| 20 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. |
| 21 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include <linux/kernel.h> |
| 26 | #include <linux/errno.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/slab.h> |
| 29 | #include <linux/tty.h> |
| 30 | #include <linux/tty_driver.h> |
| 31 | #include <linux/tty_flip.h> |
| 32 | #include <linux/module.h> |
| 33 | #include <linux/serial.h> |
| 34 | #include <linux/usb.h> |
| 35 | #include <linux/usb/serial.h> |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 36 | #include <linux/uaccess.h> |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 37 | |
| 38 | /* |
| 39 | * Version Information |
| 40 | */ |
Tony Cook | 37768ad | 2009-04-18 22:42:18 +0930 | [diff] [blame] | 41 | #define DRIVER_VERSION "1.3.2" |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 42 | #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" |
| 43 | |
| 44 | /* |
| 45 | * 16C50 UART register defines |
| 46 | */ |
| 47 | |
| 48 | #define LCR_BITS_5 0x00 /* 5 bits/char */ |
| 49 | #define LCR_BITS_6 0x01 /* 6 bits/char */ |
| 50 | #define LCR_BITS_7 0x02 /* 7 bits/char */ |
| 51 | #define LCR_BITS_8 0x03 /* 8 bits/char */ |
| 52 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ |
| 53 | |
| 54 | #define LCR_STOP_1 0x00 /* 1 stop bit */ |
| 55 | #define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ |
| 56 | #define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ |
| 57 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ |
| 58 | |
| 59 | #define LCR_PAR_NONE 0x00 /* No parity */ |
| 60 | #define LCR_PAR_ODD 0x08 /* Odd parity */ |
| 61 | #define LCR_PAR_EVEN 0x18 /* Even parity */ |
| 62 | #define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ |
| 63 | #define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ |
| 64 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ |
| 65 | |
| 66 | #define LCR_SET_BREAK 0x40 /* Set Break condition */ |
| 67 | #define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ |
| 68 | |
| 69 | #define MCR_DTR 0x01 /* Assert DTR */ |
| 70 | #define MCR_RTS 0x02 /* Assert RTS */ |
| 71 | #define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ |
| 72 | #define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ |
| 73 | #define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ |
| 74 | #define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ |
| 75 | |
| 76 | #define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ |
| 77 | #define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ |
| 78 | #define MOS7840_MSR_RI 0x40 /* Current state of RI */ |
| 79 | #define MOS7840_MSR_CD 0x80 /* Current state of CD */ |
| 80 | |
| 81 | /* |
| 82 | * Defines used for sending commands to port |
| 83 | */ |
| 84 | |
Mark Ferrell | 1e65848 | 2012-07-24 13:38:31 -0500 | [diff] [blame] | 85 | #define MOS_WDR_TIMEOUT 5000 /* default urb timeout */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 86 | |
| 87 | #define MOS_PORT1 0x0200 |
| 88 | #define MOS_PORT2 0x0300 |
| 89 | #define MOS_VENREG 0x0000 |
| 90 | #define MOS_MAX_PORT 0x02 |
| 91 | #define MOS_WRITE 0x0E |
| 92 | #define MOS_READ 0x0D |
| 93 | |
| 94 | /* Requests */ |
| 95 | #define MCS_RD_RTYPE 0xC0 |
| 96 | #define MCS_WR_RTYPE 0x40 |
| 97 | #define MCS_RDREQ 0x0D |
| 98 | #define MCS_WRREQ 0x0E |
| 99 | #define MCS_CTRL_TIMEOUT 500 |
| 100 | #define VENDOR_READ_LENGTH (0x01) |
| 101 | |
| 102 | #define MAX_NAME_LEN 64 |
| 103 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 104 | #define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
| 105 | #define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 106 | |
| 107 | /* For higher baud Rates use TIOCEXBAUD */ |
| 108 | #define TIOCEXBAUD 0x5462 |
| 109 | |
| 110 | /* vendor id and device id defines */ |
| 111 | |
David Ludlow | 11e1abb | 2008-02-25 17:30:52 -0500 | [diff] [blame] | 112 | /* The native mos7840/7820 component */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 113 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
| 114 | #define MOSCHIP_DEVICE_ID_7840 0x7840 |
| 115 | #define MOSCHIP_DEVICE_ID_7820 0x7820 |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 116 | #define MOSCHIP_DEVICE_ID_7810 0x7810 |
David Ludlow | 11e1abb | 2008-02-25 17:30:52 -0500 | [diff] [blame] | 117 | /* The native component can have its vendor/device id's overridden |
| 118 | * in vendor-specific implementations. Such devices can be handled |
Greg Kroah-Hartman | 68e2411 | 2012-05-08 15:46:14 -0700 | [diff] [blame] | 119 | * by making a change here, in id_table. |
David Ludlow | 11e1abb | 2008-02-25 17:30:52 -0500 | [diff] [blame] | 120 | */ |
Dave Ludlow | 870408c | 2010-09-01 12:33:30 -0400 | [diff] [blame] | 121 | #define USB_VENDOR_ID_BANDB 0x0856 |
| 122 | #define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 |
| 123 | #define BANDB_DEVICE_ID_USO9ML2_2P 0xBC00 |
| 124 | #define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 |
| 125 | #define BANDB_DEVICE_ID_USO9ML2_4P 0xBC01 |
| 126 | #define BANDB_DEVICE_ID_US9ML2_2 0xAC29 |
| 127 | #define BANDB_DEVICE_ID_US9ML2_4 0xAC30 |
| 128 | #define BANDB_DEVICE_ID_USPTL4_2 0xAC31 |
| 129 | #define BANDB_DEVICE_ID_USPTL4_4 0xAC32 |
| 130 | #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 |
| 131 | #define BANDB_DEVICE_ID_USOPTL4_2P 0xBC02 |
| 132 | #define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 |
| 133 | #define BANDB_DEVICE_ID_USOPTL4_4P 0xBC03 |
| 134 | #define BANDB_DEVICE_ID_USOPTL2_4 0xAC24 |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 135 | |
Russell Lang | 9d498be | 2009-07-17 19:29:20 +1000 | [diff] [blame] | 136 | /* This driver also supports |
| 137 | * ATEN UC2324 device using Moschip MCS7840 |
| 138 | * ATEN UC2322 device using Moschip MCS7820 |
| 139 | */ |
Tony Cook | e9b8cff | 2009-04-18 22:42:18 +0930 | [diff] [blame] | 140 | #define USB_VENDOR_ID_ATENINTL 0x0557 |
| 141 | #define ATENINTL_DEVICE_ID_UC2324 0x2011 |
Russell Lang | 9d498be | 2009-07-17 19:29:20 +1000 | [diff] [blame] | 142 | #define ATENINTL_DEVICE_ID_UC2322 0x7820 |
Tony Cook | e9b8cff | 2009-04-18 22:42:18 +0930 | [diff] [blame] | 143 | |
David Ludlow | 11e1abb | 2008-02-25 17:30:52 -0500 | [diff] [blame] | 144 | /* Interrupt Routine Defines */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 145 | |
| 146 | #define SERIAL_IIR_RLS 0x06 |
| 147 | #define SERIAL_IIR_MS 0x00 |
| 148 | |
| 149 | /* |
| 150 | * Emulation of the bit mask on the LINE STATUS REGISTER. |
| 151 | */ |
| 152 | #define SERIAL_LSR_DR 0x0001 |
| 153 | #define SERIAL_LSR_OE 0x0002 |
| 154 | #define SERIAL_LSR_PE 0x0004 |
| 155 | #define SERIAL_LSR_FE 0x0008 |
| 156 | #define SERIAL_LSR_BI 0x0010 |
| 157 | |
| 158 | #define MOS_MSR_DELTA_CTS 0x10 |
| 159 | #define MOS_MSR_DELTA_DSR 0x20 |
| 160 | #define MOS_MSR_DELTA_RI 0x40 |
| 161 | #define MOS_MSR_DELTA_CD 0x80 |
| 162 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 163 | /* Serial Port register Address */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 164 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) |
| 165 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) |
| 166 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) |
| 167 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) |
| 168 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) |
| 169 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) |
| 170 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) |
| 171 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) |
| 172 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) |
| 173 | |
| 174 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) |
| 175 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) |
Donald Lee | 093ea2d | 2012-03-14 15:26:33 +0800 | [diff] [blame] | 176 | #define GPIO_REGISTER ((__u16)(0x07)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 177 | |
| 178 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) |
| 179 | |
| 180 | /* |
| 181 | * URB POOL related defines |
| 182 | */ |
| 183 | #define NUM_URBS 16 /* URB Count */ |
| 184 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ |
| 185 | |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 186 | /* LED on/off milliseconds*/ |
| 187 | #define LED_ON_MS 500 |
| 188 | #define LED_OFF_MS 500 |
| 189 | |
| 190 | static int device_type; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 191 | |
Tony Zelenoff | b9c8766 | 2012-06-05 17:58:04 +0400 | [diff] [blame] | 192 | static const struct usb_device_id id_table[] = { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 193 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
| 194 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 195 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)}, |
Cliff Brake | acf509a | 2009-12-01 09:53:43 -0500 | [diff] [blame] | 196 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
Dave Ludlow | 870408c | 2010-09-01 12:33:30 -0400 | [diff] [blame] | 197 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)}, |
Cliff Brake | acf509a | 2009-12-01 09:53:43 -0500 | [diff] [blame] | 198 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, |
Dave Ludlow | 870408c | 2010-09-01 12:33:30 -0400 | [diff] [blame] | 199 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P)}, |
Cliff Brake | acf509a | 2009-12-01 09:53:43 -0500 | [diff] [blame] | 200 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, |
| 201 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, |
| 202 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, |
| 203 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, |
David Ludlow | 11e1abb | 2008-02-25 17:30:52 -0500 | [diff] [blame] | 204 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
Dave Ludlow | 870408c | 2010-09-01 12:33:30 -0400 | [diff] [blame] | 205 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)}, |
Cliff Brake | acf509a | 2009-12-01 09:53:43 -0500 | [diff] [blame] | 206 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
Dave Ludlow | 870408c | 2010-09-01 12:33:30 -0400 | [diff] [blame] | 207 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)}, |
Blaise Gassend | 27f1281 | 2009-12-18 15:23:38 -0800 | [diff] [blame] | 208 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
Tony Cook | e9b8cff | 2009-04-18 22:42:18 +0930 | [diff] [blame] | 209 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
Russell Lang | 9d498be | 2009-07-17 19:29:20 +1000 | [diff] [blame] | 210 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 211 | {} /* terminating entry */ |
| 212 | }; |
Greg Kroah-Hartman | 68e2411 | 2012-05-08 15:46:14 -0700 | [diff] [blame] | 213 | MODULE_DEVICE_TABLE(usb, id_table); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 214 | |
| 215 | /* This structure holds all of the local port information */ |
| 216 | |
| 217 | struct moschip_port { |
| 218 | int port_num; /*Actual port number in the device(1,2,etc) */ |
| 219 | struct urb *write_urb; /* write URB for this port */ |
| 220 | struct urb *read_urb; /* read URB for this port */ |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 221 | struct urb *int_urb; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 222 | __u8 shadowLCR; /* last LCR value received */ |
| 223 | __u8 shadowMCR; /* last MCR value received */ |
| 224 | char open; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 225 | char open_ports; |
| 226 | char zombie; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 227 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
| 228 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ |
| 229 | int delta_msr_cond; |
| 230 | struct async_icount icount; |
| 231 | struct usb_serial_port *port; /* loop back to the owner of this object */ |
| 232 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 233 | /* Offsets */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 234 | __u8 SpRegOffset; |
| 235 | __u8 ControlRegOffset; |
| 236 | __u8 DcrRegOffset; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 237 | /* for processing control URBS in interrupt context */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 238 | struct urb *control_urb; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 239 | struct usb_ctrlrequest *dr; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 240 | char *ctrl_buf; |
| 241 | int MsrLsr; |
| 242 | |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 243 | spinlock_t pool_lock; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 244 | struct urb *write_urb_pool[NUM_URBS]; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 245 | char busy[NUM_URBS]; |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 246 | bool read_urb_busy; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 247 | |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 248 | /* For device(s) with LED indicator */ |
| 249 | bool has_led; |
| 250 | bool led_flag; |
| 251 | struct timer_list led_timer1; /* Timer for LED on */ |
| 252 | struct timer_list led_timer2; /* Timer for LED off */ |
| 253 | }; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 254 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 255 | /* |
| 256 | * mos7840_set_reg_sync |
| 257 | * To set the Control register by calling usb_fill_control_urb function |
| 258 | * by passing usb_sndctrlpipe function as parameter. |
| 259 | */ |
| 260 | |
| 261 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, |
| 262 | __u16 val) |
| 263 | { |
| 264 | struct usb_device *dev = port->serial->dev; |
| 265 | val = val & 0x00ff; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 266 | dev_dbg(&port->dev, "mos7840_set_reg_sync offset is %x, value %x\n", reg, val); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 267 | |
| 268 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, |
| 269 | MCS_WR_RTYPE, val, reg, NULL, 0, |
| 270 | MOS_WDR_TIMEOUT); |
| 271 | } |
| 272 | |
| 273 | /* |
| 274 | * mos7840_get_reg_sync |
| 275 | * To set the Uart register by calling usb_fill_control_urb function by |
| 276 | * passing usb_rcvctrlpipe function as parameter. |
| 277 | */ |
| 278 | |
| 279 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 280 | __u16 *val) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 281 | { |
| 282 | struct usb_device *dev = port->serial->dev; |
| 283 | int ret = 0; |
Johan Hovold | 9e221a3 | 2009-12-28 23:01:55 +0100 | [diff] [blame] | 284 | u8 *buf; |
| 285 | |
| 286 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); |
| 287 | if (!buf) |
| 288 | return -ENOMEM; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 289 | |
| 290 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, |
Johan Hovold | 9e221a3 | 2009-12-28 23:01:55 +0100 | [diff] [blame] | 291 | MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 292 | MOS_WDR_TIMEOUT); |
Johan Hovold | 9e221a3 | 2009-12-28 23:01:55 +0100 | [diff] [blame] | 293 | *val = buf[0]; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 294 | dev_dbg(&port->dev, "%s offset is %x, return val %x\n", __func__, reg, *val); |
Johan Hovold | 9e221a3 | 2009-12-28 23:01:55 +0100 | [diff] [blame] | 295 | |
| 296 | kfree(buf); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 297 | return ret; |
| 298 | } |
| 299 | |
| 300 | /* |
| 301 | * mos7840_set_uart_reg |
| 302 | * To set the Uart register by calling usb_fill_control_urb function by |
| 303 | * passing usb_sndctrlpipe function as parameter. |
| 304 | */ |
| 305 | |
| 306 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, |
| 307 | __u16 val) |
| 308 | { |
| 309 | |
| 310 | struct usb_device *dev = port->serial->dev; |
| 311 | val = val & 0x00ff; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 312 | /* For the UART control registers, the application number need |
| 313 | to be Or'ed */ |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 314 | if (port->serial->num_ports == 4) { |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 315 | val |= (((__u16) port->number - |
| 316 | (__u16) (port->serial->minor)) + 1) << 8; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 317 | } else { |
| 318 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 319 | val |= (((__u16) port->number - |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 320 | (__u16) (port->serial->minor)) + 1) << 8; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 321 | } else { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 322 | val |= (((__u16) port->number - |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 323 | (__u16) (port->serial->minor)) + 2) << 8; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 324 | } |
| 325 | } |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 326 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, val); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 327 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, |
| 328 | MCS_WR_RTYPE, val, reg, NULL, 0, |
| 329 | MOS_WDR_TIMEOUT); |
| 330 | |
| 331 | } |
| 332 | |
| 333 | /* |
| 334 | * mos7840_get_uart_reg |
| 335 | * To set the Control register by calling usb_fill_control_urb function |
| 336 | * by passing usb_rcvctrlpipe function as parameter. |
| 337 | */ |
| 338 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 339 | __u16 *val) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 340 | { |
| 341 | struct usb_device *dev = port->serial->dev; |
| 342 | int ret = 0; |
| 343 | __u16 Wval; |
Johan Hovold | 9e221a3 | 2009-12-28 23:01:55 +0100 | [diff] [blame] | 344 | u8 *buf; |
| 345 | |
| 346 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); |
| 347 | if (!buf) |
| 348 | return -ENOMEM; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 349 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 350 | /* Wval is same as application number */ |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 351 | if (port->serial->num_ports == 4) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 352 | Wval = |
| 353 | (((__u16) port->number - (__u16) (port->serial->minor)) + |
| 354 | 1) << 8; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 355 | } else { |
| 356 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 357 | Wval = (((__u16) port->number - |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 358 | (__u16) (port->serial->minor)) + 1) << 8; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 359 | } else { |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 360 | Wval = (((__u16) port->number - |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 361 | (__u16) (port->serial->minor)) + 2) << 8; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 362 | } |
| 363 | } |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 364 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, Wval); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 365 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, |
Johan Hovold | 9e221a3 | 2009-12-28 23:01:55 +0100 | [diff] [blame] | 366 | MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 367 | MOS_WDR_TIMEOUT); |
Johan Hovold | 9e221a3 | 2009-12-28 23:01:55 +0100 | [diff] [blame] | 368 | *val = buf[0]; |
| 369 | |
| 370 | kfree(buf); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 371 | return ret; |
| 372 | } |
| 373 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 374 | static void mos7840_dump_serial_port(struct usb_serial_port *port, |
| 375 | struct moschip_port *mos7840_port) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 376 | { |
| 377 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 378 | dev_dbg(&port->dev, "SpRegOffset is %2x\n", mos7840_port->SpRegOffset); |
| 379 | dev_dbg(&port->dev, "ControlRegOffset is %2x\n", mos7840_port->ControlRegOffset); |
| 380 | dev_dbg(&port->dev, "DCRRegOffset is %2x\n", mos7840_port->DcrRegOffset); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 381 | |
| 382 | } |
| 383 | |
| 384 | /************************************************************************/ |
| 385 | /************************************************************************/ |
| 386 | /* I N T E R F A C E F U N C T I O N S */ |
| 387 | /* I N T E R F A C E F U N C T I O N S */ |
| 388 | /************************************************************************/ |
| 389 | /************************************************************************/ |
| 390 | |
| 391 | static inline void mos7840_set_port_private(struct usb_serial_port *port, |
| 392 | struct moschip_port *data) |
| 393 | { |
| 394 | usb_set_serial_port_data(port, (void *)data); |
| 395 | } |
| 396 | |
| 397 | static inline struct moschip_port *mos7840_get_port_private(struct |
| 398 | usb_serial_port |
| 399 | *port) |
| 400 | { |
| 401 | return (struct moschip_port *)usb_get_serial_port_data(port); |
| 402 | } |
| 403 | |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 404 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 405 | { |
| 406 | struct moschip_port *mos7840_port; |
| 407 | struct async_icount *icount; |
| 408 | mos7840_port = port; |
| 409 | icount = &mos7840_port->icount; |
| 410 | if (new_msr & |
| 411 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | |
| 412 | MOS_MSR_DELTA_CD)) { |
| 413 | icount = &mos7840_port->icount; |
| 414 | |
| 415 | /* update input line counters */ |
| 416 | if (new_msr & MOS_MSR_DELTA_CTS) { |
| 417 | icount->cts++; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 418 | smp_wmb(); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 419 | } |
| 420 | if (new_msr & MOS_MSR_DELTA_DSR) { |
| 421 | icount->dsr++; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 422 | smp_wmb(); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 423 | } |
| 424 | if (new_msr & MOS_MSR_DELTA_CD) { |
| 425 | icount->dcd++; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 426 | smp_wmb(); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 427 | } |
| 428 | if (new_msr & MOS_MSR_DELTA_RI) { |
| 429 | icount->rng++; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 430 | smp_wmb(); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 431 | } |
| 432 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 433 | } |
| 434 | |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 435 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 436 | { |
| 437 | struct async_icount *icount; |
| 438 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 439 | if (new_lsr & SERIAL_LSR_BI) { |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 440 | /* |
| 441 | * Parity and Framing errors only count if they |
| 442 | * occur exclusive of a break being |
| 443 | * received. |
| 444 | */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 445 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
| 446 | } |
| 447 | |
| 448 | /* update input line counters */ |
| 449 | icount = &port->icount; |
| 450 | if (new_lsr & SERIAL_LSR_BI) { |
| 451 | icount->brk++; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 452 | smp_wmb(); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 453 | } |
| 454 | if (new_lsr & SERIAL_LSR_OE) { |
| 455 | icount->overrun++; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 456 | smp_wmb(); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 457 | } |
| 458 | if (new_lsr & SERIAL_LSR_PE) { |
| 459 | icount->parity++; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 460 | smp_wmb(); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 461 | } |
| 462 | if (new_lsr & SERIAL_LSR_FE) { |
| 463 | icount->frame++; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 464 | smp_wmb(); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 465 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | /************************************************************************/ |
| 469 | /************************************************************************/ |
| 470 | /* U S B C A L L B A C K F U N C T I O N S */ |
| 471 | /* U S B C A L L B A C K F U N C T I O N S */ |
| 472 | /************************************************************************/ |
| 473 | /************************************************************************/ |
| 474 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 475 | static void mos7840_control_callback(struct urb *urb) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 476 | { |
| 477 | unsigned char *data; |
| 478 | struct moschip_port *mos7840_port; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 479 | struct device *dev = &urb->dev->dev; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 480 | __u8 regval = 0x0; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 481 | int result = 0; |
Greg Kroah-Hartman | 0643c72 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 482 | int status = urb->status; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 483 | |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 484 | mos7840_port = urb->context; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 485 | |
Greg Kroah-Hartman | 0643c72 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 486 | switch (status) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 487 | case 0: |
| 488 | /* success */ |
| 489 | break; |
| 490 | case -ECONNRESET: |
| 491 | case -ENOENT: |
| 492 | case -ESHUTDOWN: |
| 493 | /* this urb is terminated, clean up */ |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 494 | dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 495 | return; |
| 496 | default: |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 497 | dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 498 | goto exit; |
| 499 | } |
| 500 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 501 | dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length); |
| 502 | dev_dbg(dev, "%s mos7840_port->MsrLsr is %d port %d\n", __func__, |
| 503 | mos7840_port->MsrLsr, mos7840_port->port_num); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 504 | data = urb->transfer_buffer; |
| 505 | regval = (__u8) data[0]; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 506 | dev_dbg(dev, "%s data is %x\n", __func__, regval); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 507 | if (mos7840_port->MsrLsr == 0) |
| 508 | mos7840_handle_new_msr(mos7840_port, regval); |
| 509 | else if (mos7840_port->MsrLsr == 1) |
| 510 | mos7840_handle_new_lsr(mos7840_port, regval); |
| 511 | |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 512 | exit: |
| 513 | spin_lock(&mos7840_port->pool_lock); |
| 514 | if (!mos7840_port->zombie) |
| 515 | result = usb_submit_urb(mos7840_port->int_urb, GFP_ATOMIC); |
| 516 | spin_unlock(&mos7840_port->pool_lock); |
| 517 | if (result) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 518 | dev_err(dev, "%s - Error %d submitting interrupt urb\n", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 519 | __func__, result); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 520 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 524 | __u16 *val) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 525 | { |
| 526 | struct usb_device *dev = mcs->port->serial->dev; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 527 | struct usb_ctrlrequest *dr = mcs->dr; |
| 528 | unsigned char *buffer = mcs->ctrl_buf; |
| 529 | int ret; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 530 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 531 | dr->bRequestType = MCS_RD_RTYPE; |
| 532 | dr->bRequest = MCS_RDREQ; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 533 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 534 | dr->wIndex = cpu_to_le16(reg); |
| 535 | dr->wLength = cpu_to_le16(2); |
| 536 | |
| 537 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), |
| 538 | (unsigned char *)dr, buffer, 2, |
| 539 | mos7840_control_callback, mcs); |
| 540 | mcs->control_urb->transfer_buffer_length = 2; |
| 541 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); |
| 542 | return ret; |
| 543 | } |
| 544 | |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 545 | static void mos7840_set_led_callback(struct urb *urb) |
| 546 | { |
| 547 | switch (urb->status) { |
| 548 | case 0: |
| 549 | /* Success */ |
| 550 | break; |
| 551 | case -ECONNRESET: |
| 552 | case -ENOENT: |
| 553 | case -ESHUTDOWN: |
| 554 | /* This urb is terminated, clean up */ |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 555 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d", |
| 556 | __func__, urb->status); |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 557 | break; |
| 558 | default: |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 559 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d", |
| 560 | __func__, urb->status); |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 561 | } |
| 562 | } |
| 563 | |
| 564 | static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, |
| 565 | __u16 reg) |
| 566 | { |
| 567 | struct usb_device *dev = mcs->port->serial->dev; |
| 568 | struct usb_ctrlrequest *dr = mcs->dr; |
| 569 | |
| 570 | dr->bRequestType = MCS_WR_RTYPE; |
| 571 | dr->bRequest = MCS_WRREQ; |
| 572 | dr->wValue = cpu_to_le16(wval); |
| 573 | dr->wIndex = cpu_to_le16(reg); |
| 574 | dr->wLength = cpu_to_le16(0); |
| 575 | |
| 576 | usb_fill_control_urb(mcs->control_urb, dev, usb_sndctrlpipe(dev, 0), |
| 577 | (unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL); |
| 578 | |
| 579 | usb_submit_urb(mcs->control_urb, GFP_ATOMIC); |
| 580 | } |
| 581 | |
| 582 | static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg, |
| 583 | __u16 val) |
| 584 | { |
| 585 | struct usb_device *dev = port->serial->dev; |
| 586 | |
| 587 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, |
| 588 | val, reg, NULL, 0, MOS_WDR_TIMEOUT); |
| 589 | } |
| 590 | |
| 591 | static void mos7840_led_off(unsigned long arg) |
| 592 | { |
| 593 | struct moschip_port *mcs = (struct moschip_port *) arg; |
| 594 | |
| 595 | /* Turn off LED */ |
| 596 | mos7840_set_led_async(mcs, 0x0300, MODEM_CONTROL_REGISTER); |
| 597 | mod_timer(&mcs->led_timer2, |
| 598 | jiffies + msecs_to_jiffies(LED_OFF_MS)); |
| 599 | } |
| 600 | |
| 601 | static void mos7840_led_flag_off(unsigned long arg) |
| 602 | { |
| 603 | struct moschip_port *mcs = (struct moschip_port *) arg; |
| 604 | |
| 605 | mcs->led_flag = false; |
| 606 | } |
| 607 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 608 | /***************************************************************************** |
| 609 | * mos7840_interrupt_callback |
| 610 | * this is the callback function for when we have received data on the |
| 611 | * interrupt endpoint. |
| 612 | *****************************************************************************/ |
| 613 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 614 | static void mos7840_interrupt_callback(struct urb *urb) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 615 | { |
| 616 | int result; |
| 617 | int length; |
| 618 | struct moschip_port *mos7840_port; |
| 619 | struct usb_serial *serial; |
| 620 | __u16 Data; |
| 621 | unsigned char *data; |
| 622 | __u8 sp[5], st; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 623 | int i, rv = 0; |
| 624 | __u16 wval, wreg = 0; |
Greg Kroah-Hartman | 0643c72 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 625 | int status = urb->status; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 626 | |
Greg Kroah-Hartman | 0643c72 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 627 | switch (status) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 628 | case 0: |
| 629 | /* success */ |
| 630 | break; |
| 631 | case -ECONNRESET: |
| 632 | case -ENOENT: |
| 633 | case -ESHUTDOWN: |
| 634 | /* this urb is terminated, clean up */ |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 635 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", |
| 636 | __func__, status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 637 | return; |
| 638 | default: |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 639 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", |
| 640 | __func__, status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 641 | goto exit; |
| 642 | } |
| 643 | |
| 644 | length = urb->actual_length; |
| 645 | data = urb->transfer_buffer; |
| 646 | |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 647 | serial = urb->context; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 648 | |
| 649 | /* Moschip get 5 bytes |
| 650 | * Byte 1 IIR Port 1 (port.number is 0) |
| 651 | * Byte 2 IIR Port 2 (port.number is 1) |
| 652 | * Byte 3 IIR Port 3 (port.number is 2) |
| 653 | * Byte 4 IIR Port 4 (port.number is 3) |
| 654 | * Byte 5 FIFO status for both */ |
| 655 | |
| 656 | if (length && length > 5) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 657 | dev_dbg(&urb->dev->dev, "%s", "Wrong data !!!\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 658 | return; |
| 659 | } |
| 660 | |
| 661 | sp[0] = (__u8) data[0]; |
| 662 | sp[1] = (__u8) data[1]; |
| 663 | sp[2] = (__u8) data[2]; |
| 664 | sp[3] = (__u8) data[3]; |
| 665 | st = (__u8) data[4]; |
| 666 | |
| 667 | for (i = 0; i < serial->num_ports; i++) { |
| 668 | mos7840_port = mos7840_get_port_private(serial->port[i]); |
| 669 | wval = |
| 670 | (((__u16) serial->port[i]->number - |
| 671 | (__u16) (serial->minor)) + 1) << 8; |
| 672 | if (mos7840_port->open) { |
| 673 | if (sp[i] & 0x01) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 674 | dev_dbg(&urb->dev->dev, "SP%d No Interrupt !!!\n", i); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 675 | } else { |
| 676 | switch (sp[i] & 0x0f) { |
| 677 | case SERIAL_IIR_RLS: |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 678 | dev_dbg(&urb->dev->dev, "Serial Port %d: Receiver status error or \n", i); |
| 679 | dev_dbg(&urb->dev->dev, "address bit detected in 9-bit mode\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 680 | mos7840_port->MsrLsr = 1; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 681 | wreg = LINE_STATUS_REGISTER; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 682 | break; |
| 683 | case SERIAL_IIR_MS: |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 684 | dev_dbg(&urb->dev->dev, "Serial Port %d: Modem status change\n", i); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 685 | mos7840_port->MsrLsr = 0; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 686 | wreg = MODEM_STATUS_REGISTER; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 687 | break; |
| 688 | } |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 689 | spin_lock(&mos7840_port->pool_lock); |
| 690 | if (!mos7840_port->zombie) { |
| 691 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); |
| 692 | } else { |
| 693 | spin_unlock(&mos7840_port->pool_lock); |
| 694 | return; |
| 695 | } |
| 696 | spin_unlock(&mos7840_port->pool_lock); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 697 | } |
| 698 | } |
| 699 | } |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 700 | if (!(rv < 0)) |
| 701 | /* the completion handler for the control urb will resubmit */ |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 702 | return; |
| 703 | exit: |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 704 | result = usb_submit_urb(urb, GFP_ATOMIC); |
| 705 | if (result) { |
| 706 | dev_err(&urb->dev->dev, |
| 707 | "%s - Error %d submitting interrupt urb\n", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 708 | __func__, result); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 709 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 710 | } |
| 711 | |
| 712 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, |
| 713 | const char *function) |
| 714 | { |
| 715 | if (!port) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 716 | pr_debug("%s - port == NULL\n", function); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 717 | return -1; |
| 718 | } |
| 719 | if (!port->serial) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 720 | pr_debug("%s - port->serial == NULL\n", function); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 721 | return -1; |
| 722 | } |
| 723 | |
| 724 | return 0; |
| 725 | } |
| 726 | |
| 727 | /* Inline functions to check the sanity of a pointer that is passed to us */ |
| 728 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, |
| 729 | const char *function) |
| 730 | { |
| 731 | if (!serial) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 732 | pr_debug("%s - serial == NULL\n", function); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 733 | return -1; |
| 734 | } |
| 735 | if (!serial->type) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 736 | pr_debug("%s - serial->type == NULL!\n", function); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 737 | return -1; |
| 738 | } |
| 739 | |
| 740 | return 0; |
| 741 | } |
| 742 | |
| 743 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, |
| 744 | const char *function) |
| 745 | { |
| 746 | /* if no port was specified, or it fails a paranoia check */ |
| 747 | if (!port || |
| 748 | mos7840_port_paranoia_check(port, function) || |
| 749 | mos7840_serial_paranoia_check(port->serial, function)) { |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 750 | /* then say that we don't have a valid usb_serial thing, |
| 751 | * which will end up genrating -ENODEV return values */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 752 | return NULL; |
| 753 | } |
| 754 | |
| 755 | return port->serial; |
| 756 | } |
| 757 | |
| 758 | /***************************************************************************** |
| 759 | * mos7840_bulk_in_callback |
| 760 | * this is the callback function for when we have received data on the |
| 761 | * bulk in endpoint. |
| 762 | *****************************************************************************/ |
| 763 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 764 | static void mos7840_bulk_in_callback(struct urb *urb) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 765 | { |
Greg Kroah-Hartman | 0643c72 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 766 | int retval; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 767 | unsigned char *data; |
| 768 | struct usb_serial *serial; |
| 769 | struct usb_serial_port *port; |
| 770 | struct moschip_port *mos7840_port; |
| 771 | struct tty_struct *tty; |
Greg Kroah-Hartman | 0643c72 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 772 | int status = urb->status; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 773 | |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 774 | mos7840_port = urb->context; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 775 | if (!mos7840_port) |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 776 | return; |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 777 | |
| 778 | if (status) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 779 | dev_dbg(&urb->dev->dev, "nonzero read bulk status received: %d\n", status); |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 780 | mos7840_port->read_urb_busy = false; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 781 | return; |
| 782 | } |
| 783 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 784 | port = mos7840_port->port; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 785 | if (mos7840_port_paranoia_check(port, __func__)) { |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 786 | mos7840_port->read_urb_busy = false; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 787 | return; |
| 788 | } |
| 789 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 790 | serial = mos7840_get_usb_serial(port, __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 791 | if (!serial) { |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 792 | mos7840_port->read_urb_busy = false; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 793 | return; |
| 794 | } |
| 795 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 796 | data = urb->transfer_buffer; |
Greg Kroah-Hartman | 59d33f2 | 2012-09-18 09:58:57 +0100 | [diff] [blame] | 797 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 798 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 799 | if (urb->actual_length) { |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 800 | tty = tty_port_tty_get(&mos7840_port->port->port); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 801 | if (tty) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 802 | tty_insert_flip_string(tty, data, urb->actual_length); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 803 | tty_flip_buffer_push(tty); |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 804 | tty_kref_put(tty); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 805 | } |
| 806 | mos7840_port->icount.rx += urb->actual_length; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 807 | smp_wmb(); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 808 | dev_dbg(&port->dev, "mos7840_port->icount.rx is %d:\n", mos7840_port->icount.rx); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 809 | } |
| 810 | |
| 811 | if (!mos7840_port->read_urb) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 812 | dev_dbg(&port->dev, "%s", "URB KILLED !!!\n"); |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 813 | mos7840_port->read_urb_busy = false; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 814 | return; |
| 815 | } |
| 816 | |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 817 | /* Turn on LED */ |
| 818 | if (mos7840_port->has_led && !mos7840_port->led_flag) { |
| 819 | mos7840_port->led_flag = true; |
| 820 | mos7840_set_led_async(mos7840_port, 0x0301, |
| 821 | MODEM_CONTROL_REGISTER); |
| 822 | mod_timer(&mos7840_port->led_timer1, |
| 823 | jiffies + msecs_to_jiffies(LED_ON_MS)); |
| 824 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 825 | |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 826 | mos7840_port->read_urb_busy = true; |
Greg Kroah-Hartman | 0643c72 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 827 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 828 | |
Greg Kroah-Hartman | 0643c72 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 829 | if (retval) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 830 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, retval = %d\n", retval); |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 831 | mos7840_port->read_urb_busy = false; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 832 | } |
| 833 | } |
| 834 | |
| 835 | /***************************************************************************** |
| 836 | * mos7840_bulk_out_data_callback |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 837 | * this is the callback function for when we have finished sending |
| 838 | * serial data on the bulk out endpoint. |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 839 | *****************************************************************************/ |
| 840 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 841 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 842 | { |
| 843 | struct moschip_port *mos7840_port; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 844 | struct usb_serial_port *port; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 845 | struct tty_struct *tty; |
Greg Kroah-Hartman | 0643c72 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 846 | int status = urb->status; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 847 | int i; |
| 848 | |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 849 | mos7840_port = urb->context; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 850 | port = mos7840_port->port; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 851 | spin_lock(&mos7840_port->pool_lock); |
| 852 | for (i = 0; i < NUM_URBS; i++) { |
| 853 | if (urb == mos7840_port->write_urb_pool[i]) { |
| 854 | mos7840_port->busy[i] = 0; |
| 855 | break; |
| 856 | } |
| 857 | } |
| 858 | spin_unlock(&mos7840_port->pool_lock); |
| 859 | |
Greg Kroah-Hartman | 0643c72 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 860 | if (status) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 861 | dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 862 | return; |
| 863 | } |
| 864 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 865 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 866 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 867 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 868 | tty = tty_port_tty_get(&port->port); |
Jiri Slaby | b963a84 | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 869 | if (tty && mos7840_port->open) |
| 870 | tty_wakeup(tty); |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 871 | tty_kref_put(tty); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 872 | |
| 873 | } |
| 874 | |
| 875 | /************************************************************************/ |
| 876 | /* 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 */ |
| 877 | /************************************************************************/ |
| 878 | #ifdef MCSSerialProbe |
| 879 | static int mos7840_serial_probe(struct usb_serial *serial, |
| 880 | const struct usb_device_id *id) |
| 881 | { |
| 882 | |
| 883 | /*need to implement the mode_reg reading and updating\ |
| 884 | structures usb_serial_ device_type\ |
| 885 | (i.e num_ports, num_bulkin,bulkout etc) */ |
| 886 | /* Also we can update the changes attach */ |
| 887 | return 1; |
| 888 | } |
| 889 | #endif |
| 890 | |
| 891 | /***************************************************************************** |
| 892 | * mos7840_open |
| 893 | * this function is called by the tty driver when a port is opened |
| 894 | * If successful, we return 0 |
| 895 | * Otherwise we return a negative error number. |
| 896 | *****************************************************************************/ |
| 897 | |
Alan Cox | a509a7e | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 898 | static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 899 | { |
| 900 | int response; |
| 901 | int j; |
| 902 | struct usb_serial *serial; |
| 903 | struct urb *urb; |
| 904 | __u16 Data; |
| 905 | int status; |
| 906 | struct moschip_port *mos7840_port; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 907 | struct moschip_port *port0; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 908 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 909 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 910 | return -ENODEV; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 911 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 912 | serial = port->serial; |
| 913 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 914 | if (mos7840_serial_paranoia_check(serial, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 915 | return -ENODEV; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 916 | |
| 917 | mos7840_port = mos7840_get_port_private(port); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 918 | port0 = mos7840_get_port_private(serial->port[0]); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 919 | |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 920 | if (mos7840_port == NULL || port0 == NULL) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 921 | return -ENODEV; |
| 922 | |
| 923 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
| 924 | usb_clear_halt(serial->dev, port->read_urb->pipe); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 925 | port0->open_ports++; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 926 | |
| 927 | /* Initialising the write urb pool */ |
| 928 | for (j = 0; j < NUM_URBS; ++j) { |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 929 | urb = usb_alloc_urb(0, GFP_KERNEL); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 930 | mos7840_port->write_urb_pool[j] = urb; |
| 931 | |
| 932 | if (urb == NULL) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 933 | dev_err(&port->dev, "No more urbs???\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 934 | continue; |
| 935 | } |
| 936 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 937 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
| 938 | GFP_KERNEL); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 939 | if (!urb->transfer_buffer) { |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 940 | usb_free_urb(urb); |
| 941 | mos7840_port->write_urb_pool[j] = NULL; |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 942 | dev_err(&port->dev, |
| 943 | "%s-out of memory for urb buffers.\n", |
| 944 | __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 945 | continue; |
| 946 | } |
| 947 | } |
| 948 | |
| 949 | /***************************************************************************** |
| 950 | * Initialize MCS7840 -- Write Init values to corresponding Registers |
| 951 | * |
| 952 | * Register Index |
| 953 | * 1 : IER |
| 954 | * 2 : FCR |
| 955 | * 3 : LCR |
| 956 | * 4 : MCR |
| 957 | * |
| 958 | * 0x08 : SP1/2 Control Reg |
| 959 | *****************************************************************************/ |
| 960 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 961 | /* NEED to check the following Block */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 962 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 963 | Data = 0x0; |
| 964 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
| 965 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 966 | dev_dbg(&port->dev, "Reading Spreg failed\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 967 | return -1; |
| 968 | } |
| 969 | Data |= 0x80; |
| 970 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
| 971 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 972 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 973 | return -1; |
| 974 | } |
| 975 | |
| 976 | Data &= ~0x80; |
| 977 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
| 978 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 979 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 980 | return -1; |
| 981 | } |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 982 | /* End of block to be checked */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 983 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 984 | Data = 0x0; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 985 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
| 986 | &Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 987 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 988 | dev_dbg(&port->dev, "Reading Controlreg failed\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 989 | return -1; |
| 990 | } |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 991 | Data |= 0x08; /* Driver done bit */ |
| 992 | Data |= 0x20; /* rx_disable */ |
| 993 | status = mos7840_set_reg_sync(port, |
| 994 | mos7840_port->ControlRegOffset, Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 995 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 996 | dev_dbg(&port->dev, "writing Controlreg failed\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 997 | return -1; |
| 998 | } |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 999 | /* do register settings here */ |
| 1000 | /* Set all regs to the device default values. */ |
| 1001 | /*********************************** |
| 1002 | * First Disable all interrupts. |
| 1003 | ***********************************/ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1004 | Data = 0x00; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1005 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
| 1006 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1007 | dev_dbg(&port->dev, "disabling interrupts failed\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1008 | return -1; |
| 1009 | } |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1010 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1011 | Data = 0x00; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1012 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
| 1013 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1014 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1015 | return -1; |
| 1016 | } |
| 1017 | |
| 1018 | Data = 0xcf; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1019 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
| 1020 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1021 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1022 | return -1; |
| 1023 | } |
| 1024 | |
| 1025 | Data = 0x03; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1026 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
| 1027 | mos7840_port->shadowLCR = Data; |
| 1028 | |
| 1029 | Data = 0x0b; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1030 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
| 1031 | mos7840_port->shadowMCR = Data; |
| 1032 | |
| 1033 | Data = 0x00; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1034 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
| 1035 | mos7840_port->shadowLCR = Data; |
| 1036 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1037 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1038 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
| 1039 | |
| 1040 | Data = 0x0c; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1041 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
| 1042 | |
| 1043 | Data = 0x0; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1044 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
| 1045 | |
| 1046 | Data = 0x00; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1047 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
| 1048 | |
| 1049 | Data = Data & ~SERIAL_LCR_DLAB; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1050 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
| 1051 | mos7840_port->shadowLCR = Data; |
| 1052 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1053 | /* clearing Bulkin and Bulkout Fifo */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1054 | Data = 0x0; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1055 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
| 1056 | |
| 1057 | Data = Data | 0x0c; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1058 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
| 1059 | |
| 1060 | Data = Data & ~0x0c; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1061 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1062 | /* Finally enable all interrupts */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1063 | Data = 0x0c; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1064 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
| 1065 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1066 | /* clearing rx_disable */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1067 | Data = 0x0; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1068 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
| 1069 | &Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1070 | Data = Data & ~0x20; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1071 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
| 1072 | Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1073 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1074 | /* rx_negate */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1075 | Data = 0x0; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1076 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
| 1077 | &Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1078 | Data = Data | 0x10; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1079 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
| 1080 | Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1081 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1082 | /* Check to see if we've set up our endpoint info yet * |
| 1083 | * (can't set it up in mos7840_startup as the structures * |
| 1084 | * were not set up at that time.) */ |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1085 | if (port0->open_ports == 1) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1086 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1087 | /* set up interrupt urb */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1088 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1089 | serial->dev, |
| 1090 | usb_rcvintpipe(serial->dev, |
| 1091 | serial->port[0]->interrupt_in_endpointAddress), |
| 1092 | serial->port[0]->interrupt_in_buffer, |
| 1093 | serial->port[0]->interrupt_in_urb-> |
| 1094 | transfer_buffer_length, |
| 1095 | mos7840_interrupt_callback, |
| 1096 | serial, |
| 1097 | serial->port[0]->interrupt_in_urb->interval); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1098 | |
| 1099 | /* start interrupt read for mos7840 * |
| 1100 | * will continue as long as mos7840 is connected */ |
| 1101 | |
| 1102 | response = |
| 1103 | usb_submit_urb(serial->port[0]->interrupt_in_urb, |
| 1104 | GFP_KERNEL); |
| 1105 | if (response) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 1106 | dev_err(&port->dev, "%s - Error %d submitting " |
| 1107 | "interrupt urb\n", __func__, response); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1108 | } |
| 1109 | |
| 1110 | } |
| 1111 | |
| 1112 | } |
| 1113 | |
| 1114 | /* see if we've set up our endpoint info yet * |
| 1115 | * (can't set it up in mos7840_startup as the * |
| 1116 | * structures were not set up at that time.) */ |
| 1117 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1118 | dev_dbg(&port->dev, "port number is %d\n", port->number); |
| 1119 | dev_dbg(&port->dev, "serial number is %d\n", port->serial->minor); |
| 1120 | dev_dbg(&port->dev, "Bulkin endpoint is %d\n", port->bulk_in_endpointAddress); |
| 1121 | dev_dbg(&port->dev, "BulkOut endpoint is %d\n", port->bulk_out_endpointAddress); |
| 1122 | dev_dbg(&port->dev, "Interrupt endpoint is %d\n", port->interrupt_in_endpointAddress); |
| 1123 | dev_dbg(&port->dev, "port's number in the device is %d\n", mos7840_port->port_num); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1124 | mos7840_port->read_urb = port->read_urb; |
| 1125 | |
| 1126 | /* set up our bulk in urb */ |
Donald Lee | 093ea2d | 2012-03-14 15:26:33 +0800 | [diff] [blame] | 1127 | if ((serial->num_ports == 2) |
| 1128 | && ((((__u16)port->number - |
| 1129 | (__u16)(port->serial->minor)) % 2) != 0)) { |
| 1130 | usb_fill_bulk_urb(mos7840_port->read_urb, |
| 1131 | serial->dev, |
| 1132 | usb_rcvbulkpipe(serial->dev, |
| 1133 | (port->bulk_in_endpointAddress) + 2), |
| 1134 | port->bulk_in_buffer, |
| 1135 | mos7840_port->read_urb->transfer_buffer_length, |
| 1136 | mos7840_bulk_in_callback, mos7840_port); |
| 1137 | } else { |
| 1138 | usb_fill_bulk_urb(mos7840_port->read_urb, |
| 1139 | serial->dev, |
| 1140 | usb_rcvbulkpipe(serial->dev, |
| 1141 | port->bulk_in_endpointAddress), |
| 1142 | port->bulk_in_buffer, |
| 1143 | mos7840_port->read_urb->transfer_buffer_length, |
| 1144 | mos7840_bulk_in_callback, mos7840_port); |
| 1145 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1146 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1147 | dev_dbg(&port->dev, "%s: bulkin endpoint is %d\n", __func__, port->bulk_in_endpointAddress); |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 1148 | mos7840_port->read_urb_busy = true; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1149 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
| 1150 | if (response) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 1151 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
| 1152 | __func__, response); |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 1153 | mos7840_port->read_urb_busy = false; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1154 | } |
| 1155 | |
| 1156 | /* initialize our wait queues */ |
| 1157 | init_waitqueue_head(&mos7840_port->wait_chase); |
| 1158 | init_waitqueue_head(&mos7840_port->delta_msr_wait); |
| 1159 | |
| 1160 | /* initialize our icount structure */ |
| 1161 | memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); |
| 1162 | |
| 1163 | /* initialize our port settings */ |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1164 | /* Must set to enable ints! */ |
| 1165 | mos7840_port->shadowMCR = MCR_MASTER_IE; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1166 | /* send a open port command */ |
| 1167 | mos7840_port->open = 1; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1168 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1169 | mos7840_port->icount.tx = 0; |
| 1170 | mos7840_port->icount.rx = 0; |
| 1171 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1172 | return 0; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1173 | } |
| 1174 | |
| 1175 | /***************************************************************************** |
| 1176 | * mos7840_chars_in_buffer |
| 1177 | * this function is called by the tty driver when it wants to know how many |
| 1178 | * bytes of data we currently have outstanding in the port (data that has |
| 1179 | * been written, but hasn't made it out the port yet) |
| 1180 | * If successful, we return the number of bytes left to be written in the |
| 1181 | * system, |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1182 | * Otherwise we return zero. |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1183 | *****************************************************************************/ |
| 1184 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1185 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1186 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1187 | struct usb_serial_port *port = tty->driver_data; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1188 | int i; |
| 1189 | int chars = 0; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1190 | unsigned long flags; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1191 | struct moschip_port *mos7840_port; |
| 1192 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1193 | if (mos7840_port_paranoia_check(port, __func__)) |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1194 | return 0; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1195 | |
| 1196 | mos7840_port = mos7840_get_port_private(port); |
Greg Kroah-Hartman | 3363155 | 2012-05-03 16:44:33 -0700 | [diff] [blame] | 1197 | if (mos7840_port == NULL) |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1198 | return 0; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1199 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1200 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
Mark Ferrell | 5c263b9 | 2012-07-24 14:15:13 -0500 | [diff] [blame] | 1201 | for (i = 0; i < NUM_URBS; ++i) { |
| 1202 | if (mos7840_port->busy[i]) { |
| 1203 | struct urb *urb = mos7840_port->write_urb_pool[i]; |
| 1204 | chars += urb->transfer_buffer_length; |
| 1205 | } |
| 1206 | } |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1207 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1208 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1209 | return chars; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1210 | |
| 1211 | } |
| 1212 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1213 | /***************************************************************************** |
| 1214 | * mos7840_close |
| 1215 | * this function is called by the tty driver when a port is closed |
| 1216 | *****************************************************************************/ |
| 1217 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 1218 | static void mos7840_close(struct usb_serial_port *port) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1219 | { |
| 1220 | struct usb_serial *serial; |
| 1221 | struct moschip_port *mos7840_port; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1222 | struct moschip_port *port0; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1223 | int j; |
| 1224 | __u16 Data; |
| 1225 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1226 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1227 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1228 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1229 | serial = mos7840_get_usb_serial(port, __func__); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1230 | if (!serial) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1231 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1232 | |
| 1233 | mos7840_port = mos7840_get_port_private(port); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1234 | port0 = mos7840_get_port_private(serial->port[0]); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1235 | |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1236 | if (mos7840_port == NULL || port0 == NULL) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1237 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1238 | |
| 1239 | for (j = 0; j < NUM_URBS; ++j) |
| 1240 | usb_kill_urb(mos7840_port->write_urb_pool[j]); |
| 1241 | |
| 1242 | /* Freeing Write URBs */ |
| 1243 | for (j = 0; j < NUM_URBS; ++j) { |
| 1244 | if (mos7840_port->write_urb_pool[j]) { |
| 1245 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) |
| 1246 | kfree(mos7840_port->write_urb_pool[j]-> |
| 1247 | transfer_buffer); |
| 1248 | |
| 1249 | usb_free_urb(mos7840_port->write_urb_pool[j]); |
| 1250 | } |
| 1251 | } |
| 1252 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1253 | /* While closing port, shutdown all bulk read, write * |
| 1254 | * and interrupt read if they exists */ |
| 1255 | if (serial->dev) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1256 | if (mos7840_port->write_urb) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1257 | dev_dbg(&port->dev, "%s", "Shutdown bulk write\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1258 | usb_kill_urb(mos7840_port->write_urb); |
| 1259 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1260 | if (mos7840_port->read_urb) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1261 | dev_dbg(&port->dev, "%s", "Shutdown bulk read\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1262 | usb_kill_urb(mos7840_port->read_urb); |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 1263 | mos7840_port->read_urb_busy = false; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1264 | } |
| 1265 | if ((&mos7840_port->control_urb)) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1266 | dev_dbg(&port->dev, "%s", "Shutdown control read\n"); |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1267 | /*/ usb_kill_urb (mos7840_port->control_urb); */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1268 | } |
| 1269 | } |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1270 | /* if(mos7840_port->ctrl_buf != NULL) */ |
| 1271 | /* kfree(mos7840_port->ctrl_buf); */ |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1272 | port0->open_ports--; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1273 | dev_dbg(&port->dev, "%s in close%d:in port%d\n", __func__, port0->open_ports, port->number); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1274 | if (port0->open_ports == 0) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1275 | if (serial->port[0]->interrupt_in_urb) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1276 | dev_dbg(&port->dev, "Shutdown interrupt_in_urb\n"); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1277 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1278 | } |
| 1279 | } |
| 1280 | |
| 1281 | if (mos7840_port->write_urb) { |
| 1282 | /* if this urb had a transfer buffer already (old tx) free it */ |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1283 | if (mos7840_port->write_urb->transfer_buffer != NULL) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1284 | kfree(mos7840_port->write_urb->transfer_buffer); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1285 | usb_free_urb(mos7840_port->write_urb); |
| 1286 | } |
| 1287 | |
| 1288 | Data = 0x0; |
| 1289 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
| 1290 | |
| 1291 | Data = 0x00; |
| 1292 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
| 1293 | |
| 1294 | mos7840_port->open = 0; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1295 | } |
| 1296 | |
| 1297 | /************************************************************************ |
| 1298 | * |
| 1299 | * mos7840_block_until_chase_response |
| 1300 | * |
| 1301 | * This function will block the close until one of the following: |
| 1302 | * 1. Response to our Chase comes from mos7840 |
Joe Perches | dc0d5c1 | 2007-12-17 11:40:18 -0800 | [diff] [blame] | 1303 | * 2. A timeout of 10 seconds without activity has expired |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1304 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) |
| 1305 | * |
| 1306 | ************************************************************************/ |
| 1307 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1308 | static void mos7840_block_until_chase_response(struct tty_struct *tty, |
| 1309 | struct moschip_port *mos7840_port) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1310 | { |
Mark Ferrell | 1e65848 | 2012-07-24 13:38:31 -0500 | [diff] [blame] | 1311 | int timeout = msecs_to_jiffies(1000); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1312 | int wait = 10; |
| 1313 | int count; |
| 1314 | |
| 1315 | while (1) { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1316 | count = mos7840_chars_in_buffer(tty); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1317 | |
| 1318 | /* Check for Buffer status */ |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1319 | if (count <= 0) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1320 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1321 | |
| 1322 | /* Block the thread for a while */ |
| 1323 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, |
| 1324 | timeout); |
| 1325 | /* No activity.. count down section */ |
| 1326 | wait--; |
| 1327 | if (wait == 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1328 | dev_dbg(&mos7840_port->port->dev, "%s - TIMEOUT\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1329 | return; |
| 1330 | } else { |
Joe Perches | dc0d5c1 | 2007-12-17 11:40:18 -0800 | [diff] [blame] | 1331 | /* Reset timeout value back to seconds */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1332 | wait = 10; |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | } |
| 1337 | |
| 1338 | /***************************************************************************** |
| 1339 | * mos7840_break |
| 1340 | * this function sends a break to the port |
| 1341 | *****************************************************************************/ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1342 | static void mos7840_break(struct tty_struct *tty, int break_state) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1343 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1344 | struct usb_serial_port *port = tty->driver_data; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1345 | unsigned char data; |
| 1346 | struct usb_serial *serial; |
| 1347 | struct moschip_port *mos7840_port; |
| 1348 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1349 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1350 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1351 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1352 | serial = mos7840_get_usb_serial(port, __func__); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1353 | if (!serial) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1354 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1355 | |
| 1356 | mos7840_port = mos7840_get_port_private(port); |
| 1357 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1358 | if (mos7840_port == NULL) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1359 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1360 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1361 | if (serial->dev) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1362 | /* flush and block until tx is empty */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1363 | mos7840_block_until_chase_response(tty, mos7840_port); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1364 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1365 | if (break_state == -1) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1366 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1367 | else |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1368 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1369 | |
Alan Cox | 6b447f04 | 2009-01-02 13:48:56 +0000 | [diff] [blame] | 1370 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1371 | mos7840_port->shadowLCR = data; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1372 | dev_dbg(&port->dev, "%s mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1373 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, |
| 1374 | mos7840_port->shadowLCR); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1375 | } |
| 1376 | |
| 1377 | /***************************************************************************** |
| 1378 | * mos7840_write_room |
| 1379 | * this function is called by the tty driver when it wants to know how many |
| 1380 | * bytes of data we can accept for a specific port. |
| 1381 | * If successful, we return the amount of room that we have for this port |
| 1382 | * Otherwise we return a negative error number. |
| 1383 | *****************************************************************************/ |
| 1384 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1385 | static int mos7840_write_room(struct tty_struct *tty) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1386 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1387 | struct usb_serial_port *port = tty->driver_data; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1388 | int i; |
| 1389 | int room = 0; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1390 | unsigned long flags; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1391 | struct moschip_port *mos7840_port; |
| 1392 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1393 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1394 | return -1; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1395 | |
| 1396 | mos7840_port = mos7840_get_port_private(port); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1397 | if (mos7840_port == NULL) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1398 | return -1; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1399 | |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1400 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1401 | for (i = 0; i < NUM_URBS; ++i) { |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1402 | if (!mos7840_port->busy[i]) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1403 | room += URB_TRANSFER_BUFFER_SIZE; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1404 | } |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1405 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1406 | |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1407 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1408 | dev_dbg(&mos7840_port->port->dev, "%s - returns %d\n", __func__, room); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1409 | return room; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1410 | |
| 1411 | } |
| 1412 | |
| 1413 | /***************************************************************************** |
| 1414 | * mos7840_write |
| 1415 | * this function is called by the tty driver when data should be written to |
| 1416 | * the port. |
| 1417 | * If successful, we return the number of bytes written, otherwise we |
| 1418 | * return a negative error number. |
| 1419 | *****************************************************************************/ |
| 1420 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1421 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1422 | const unsigned char *data, int count) |
| 1423 | { |
| 1424 | int status; |
| 1425 | int i; |
| 1426 | int bytes_sent = 0; |
| 1427 | int transfer_size; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1428 | unsigned long flags; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1429 | |
| 1430 | struct moschip_port *mos7840_port; |
| 1431 | struct usb_serial *serial; |
| 1432 | struct urb *urb; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1433 | /* __u16 Data; */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1434 | const unsigned char *current_position = data; |
| 1435 | unsigned char *data1; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1436 | |
| 1437 | #ifdef NOTMOS7840 |
| 1438 | Data = 0x00; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1439 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
| 1440 | mos7840_port->shadowLCR = Data; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1441 | dev_dbg(&port->dev, "%s: LINE_CONTROL_REGISTER is %x\n", __func__, Data); |
| 1442 | dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1443 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1444 | /* Data = 0x03; */ |
| 1445 | /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ |
| 1446 | /* mos7840_port->shadowLCR=Data;//Need to add later */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1447 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1448 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1449 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
| 1450 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1451 | /* Data = 0x0c; */ |
| 1452 | /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1453 | Data = 0x00; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1454 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1455 | dev_dbg(&port->dev, "%s: DLL value is %x\n", __func__, Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1456 | |
| 1457 | Data = 0x0; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1458 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1459 | dev_dbg(&port->dev, "%s: DLM value is %x\n", __func__, Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1460 | |
| 1461 | Data = Data & ~SERIAL_LCR_DLAB; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1462 | dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1463 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
| 1464 | #endif |
| 1465 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1466 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1467 | return -1; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1468 | |
| 1469 | serial = port->serial; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1470 | if (mos7840_serial_paranoia_check(serial, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1471 | return -1; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1472 | |
| 1473 | mos7840_port = mos7840_get_port_private(port); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1474 | if (mos7840_port == NULL) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1475 | return -1; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1476 | |
| 1477 | /* try to find a free urb in the list */ |
| 1478 | urb = NULL; |
| 1479 | |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1480 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1481 | for (i = 0; i < NUM_URBS; ++i) { |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1482 | if (!mos7840_port->busy[i]) { |
| 1483 | mos7840_port->busy[i] = 1; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1484 | urb = mos7840_port->write_urb_pool[i]; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1485 | dev_dbg(&port->dev, "URB:%d\n", i); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1486 | break; |
| 1487 | } |
| 1488 | } |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1489 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1490 | |
| 1491 | if (urb == NULL) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1492 | dev_dbg(&port->dev, "%s - no more free urbs\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1493 | goto exit; |
| 1494 | } |
| 1495 | |
| 1496 | if (urb->transfer_buffer == NULL) { |
| 1497 | urb->transfer_buffer = |
| 1498 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); |
| 1499 | |
| 1500 | if (urb->transfer_buffer == NULL) { |
Johan Hovold | 22a416c | 2012-02-10 13:20:51 +0100 | [diff] [blame] | 1501 | dev_err_console(port, "%s no more kernel memory...\n", |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 1502 | __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1503 | goto exit; |
| 1504 | } |
| 1505 | } |
| 1506 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); |
| 1507 | |
Al Viro | 97c4965 | 2006-10-09 20:29:03 +0100 | [diff] [blame] | 1508 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1509 | |
| 1510 | /* fill urb with data and submit */ |
Donald Lee | 093ea2d | 2012-03-14 15:26:33 +0800 | [diff] [blame] | 1511 | if ((serial->num_ports == 2) |
| 1512 | && ((((__u16)port->number - |
| 1513 | (__u16)(port->serial->minor)) % 2) != 0)) { |
| 1514 | usb_fill_bulk_urb(urb, |
| 1515 | serial->dev, |
| 1516 | usb_sndbulkpipe(serial->dev, |
| 1517 | (port->bulk_out_endpointAddress) + 2), |
| 1518 | urb->transfer_buffer, |
| 1519 | transfer_size, |
| 1520 | mos7840_bulk_out_data_callback, mos7840_port); |
| 1521 | } else { |
| 1522 | usb_fill_bulk_urb(urb, |
| 1523 | serial->dev, |
| 1524 | usb_sndbulkpipe(serial->dev, |
| 1525 | port->bulk_out_endpointAddress), |
| 1526 | urb->transfer_buffer, |
| 1527 | transfer_size, |
| 1528 | mos7840_bulk_out_data_callback, mos7840_port); |
| 1529 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1530 | |
| 1531 | data1 = urb->transfer_buffer; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1532 | dev_dbg(&port->dev, "bulkout endpoint is %d\n", port->bulk_out_endpointAddress); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1533 | |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 1534 | /* Turn on LED */ |
| 1535 | if (mos7840_port->has_led && !mos7840_port->led_flag) { |
| 1536 | mos7840_port->led_flag = true; |
| 1537 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0301); |
| 1538 | mod_timer(&mos7840_port->led_timer1, |
| 1539 | jiffies + msecs_to_jiffies(LED_ON_MS)); |
| 1540 | } |
| 1541 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1542 | /* send it down the pipe */ |
| 1543 | status = usb_submit_urb(urb, GFP_ATOMIC); |
| 1544 | |
| 1545 | if (status) { |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1546 | mos7840_port->busy[i] = 0; |
Johan Hovold | 22a416c | 2012-02-10 13:20:51 +0100 | [diff] [blame] | 1547 | dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 1548 | "with status = %d\n", __func__, status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1549 | bytes_sent = status; |
| 1550 | goto exit; |
| 1551 | } |
| 1552 | bytes_sent = transfer_size; |
| 1553 | mos7840_port->icount.tx += transfer_size; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 1554 | smp_wmb(); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1555 | dev_dbg(&port->dev, "mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1556 | exit: |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1557 | return bytes_sent; |
| 1558 | |
| 1559 | } |
| 1560 | |
| 1561 | /***************************************************************************** |
| 1562 | * mos7840_throttle |
| 1563 | * this function is called by the tty driver when it wants to stop the data |
| 1564 | * being read from the port. |
| 1565 | *****************************************************************************/ |
| 1566 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1567 | static void mos7840_throttle(struct tty_struct *tty) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1568 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1569 | struct usb_serial_port *port = tty->driver_data; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1570 | struct moschip_port *mos7840_port; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1571 | int status; |
| 1572 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1573 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1574 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1575 | |
| 1576 | mos7840_port = mos7840_get_port_private(port); |
| 1577 | |
| 1578 | if (mos7840_port == NULL) |
| 1579 | return; |
| 1580 | |
| 1581 | if (!mos7840_port->open) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1582 | dev_dbg(&port->dev, "%s", "port not opened\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1583 | return; |
| 1584 | } |
| 1585 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1586 | /* if we are implementing XON/XOFF, send the stop character */ |
| 1587 | if (I_IXOFF(tty)) { |
| 1588 | unsigned char stop_char = STOP_CHAR(tty); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1589 | status = mos7840_write(tty, port, &stop_char, 1); |
| 1590 | if (status <= 0) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1591 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1592 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1593 | /* if we are implementing RTS/CTS, toggle that line */ |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 1594 | if (tty->termios.c_cflag & CRTSCTS) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1595 | mos7840_port->shadowMCR &= ~MCR_RTS; |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1596 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1597 | mos7840_port->shadowMCR); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1598 | if (status < 0) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1599 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1600 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1601 | } |
| 1602 | |
| 1603 | /***************************************************************************** |
| 1604 | * mos7840_unthrottle |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1605 | * this function is called by the tty driver when it wants to resume |
| 1606 | * the data being read from the port (called after mos7840_throttle is |
| 1607 | * called) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1608 | *****************************************************************************/ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1609 | static void mos7840_unthrottle(struct tty_struct *tty) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1610 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1611 | struct usb_serial_port *port = tty->driver_data; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1612 | int status; |
| 1613 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); |
| 1614 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1615 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1616 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1617 | |
| 1618 | if (mos7840_port == NULL) |
| 1619 | return; |
| 1620 | |
| 1621 | if (!mos7840_port->open) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1622 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1623 | return; |
| 1624 | } |
| 1625 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1626 | /* if we are implementing XON/XOFF, send the start character */ |
| 1627 | if (I_IXOFF(tty)) { |
| 1628 | unsigned char start_char = START_CHAR(tty); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1629 | status = mos7840_write(tty, port, &start_char, 1); |
| 1630 | if (status <= 0) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1631 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1632 | } |
| 1633 | |
| 1634 | /* if we are implementing RTS/CTS, toggle that line */ |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 1635 | if (tty->termios.c_cflag & CRTSCTS) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1636 | mos7840_port->shadowMCR |= MCR_RTS; |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1637 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1638 | mos7840_port->shadowMCR); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1639 | if (status < 0) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1640 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1641 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1642 | } |
| 1643 | |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 1644 | static int mos7840_tiocmget(struct tty_struct *tty) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1645 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1646 | struct usb_serial_port *port = tty->driver_data; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1647 | struct moschip_port *mos7840_port; |
| 1648 | unsigned int result; |
| 1649 | __u16 msr; |
| 1650 | __u16 mcr; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1651 | int status; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1652 | mos7840_port = mos7840_get_port_private(port); |
| 1653 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1654 | if (mos7840_port == NULL) |
| 1655 | return -ENODEV; |
| 1656 | |
| 1657 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); |
| 1658 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); |
| 1659 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) |
| 1660 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) |
| 1661 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) |
| 1662 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) |
| 1663 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) |
| 1664 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) |
| 1665 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); |
| 1666 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1667 | dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1668 | |
| 1669 | return result; |
| 1670 | } |
| 1671 | |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 1672 | static int mos7840_tiocmset(struct tty_struct *tty, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1673 | unsigned int set, unsigned int clear) |
| 1674 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1675 | struct usb_serial_port *port = tty->driver_data; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1676 | struct moschip_port *mos7840_port; |
| 1677 | unsigned int mcr; |
Roel Kluin | 87521c4 | 2008-04-17 06:16:24 +0200 | [diff] [blame] | 1678 | int status; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1679 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1680 | mos7840_port = mos7840_get_port_private(port); |
| 1681 | |
| 1682 | if (mos7840_port == NULL) |
| 1683 | return -ENODEV; |
| 1684 | |
Alan Cox | e298449 | 2008-02-20 20:51:45 +0000 | [diff] [blame] | 1685 | /* FIXME: What locks the port registers ? */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1686 | mcr = mos7840_port->shadowMCR; |
| 1687 | if (clear & TIOCM_RTS) |
| 1688 | mcr &= ~MCR_RTS; |
| 1689 | if (clear & TIOCM_DTR) |
| 1690 | mcr &= ~MCR_DTR; |
| 1691 | if (clear & TIOCM_LOOP) |
| 1692 | mcr &= ~MCR_LOOPBACK; |
| 1693 | |
| 1694 | if (set & TIOCM_RTS) |
| 1695 | mcr |= MCR_RTS; |
| 1696 | if (set & TIOCM_DTR) |
| 1697 | mcr |= MCR_DTR; |
| 1698 | if (set & TIOCM_LOOP) |
| 1699 | mcr |= MCR_LOOPBACK; |
| 1700 | |
| 1701 | mos7840_port->shadowMCR = mcr; |
| 1702 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1703 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
| 1704 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1705 | dev_dbg(&port->dev, "setting MODEM_CONTROL_REGISTER Failed\n"); |
Roel Kluin | 87521c4 | 2008-04-17 06:16:24 +0200 | [diff] [blame] | 1706 | return status; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1707 | } |
| 1708 | |
| 1709 | return 0; |
| 1710 | } |
| 1711 | |
| 1712 | /***************************************************************************** |
| 1713 | * mos7840_calc_baud_rate_divisor |
| 1714 | * this function calculates the proper baud rate divisor for the specified |
| 1715 | * baud rate. |
| 1716 | *****************************************************************************/ |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1717 | static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port, |
| 1718 | int baudRate, int *divisor, |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1719 | __u16 *clk_sel_val) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1720 | { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1721 | dev_dbg(&port->dev, "%s - %d\n", __func__, baudRate); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1722 | |
| 1723 | if (baudRate <= 115200) { |
| 1724 | *divisor = 115200 / baudRate; |
| 1725 | *clk_sel_val = 0x0; |
| 1726 | } |
| 1727 | if ((baudRate > 115200) && (baudRate <= 230400)) { |
| 1728 | *divisor = 230400 / baudRate; |
| 1729 | *clk_sel_val = 0x10; |
| 1730 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { |
| 1731 | *divisor = 403200 / baudRate; |
| 1732 | *clk_sel_val = 0x20; |
| 1733 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { |
| 1734 | *divisor = 460800 / baudRate; |
| 1735 | *clk_sel_val = 0x30; |
| 1736 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { |
| 1737 | *divisor = 806400 / baudRate; |
| 1738 | *clk_sel_val = 0x40; |
| 1739 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { |
| 1740 | *divisor = 921600 / baudRate; |
| 1741 | *clk_sel_val = 0x50; |
| 1742 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { |
| 1743 | *divisor = 1572864 / baudRate; |
| 1744 | *clk_sel_val = 0x60; |
| 1745 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { |
| 1746 | *divisor = 3145728 / baudRate; |
| 1747 | *clk_sel_val = 0x70; |
| 1748 | } |
| 1749 | return 0; |
| 1750 | |
| 1751 | #ifdef NOTMCS7840 |
| 1752 | |
| 1753 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { |
| 1754 | if (mos7840_divisor_table[i].BaudRate == baudrate) { |
| 1755 | *divisor = mos7840_divisor_table[i].Divisor; |
| 1756 | return 0; |
| 1757 | } |
| 1758 | } |
| 1759 | |
| 1760 | /* After trying for all the standard baud rates * |
| 1761 | * Try calculating the divisor for this baud rate */ |
| 1762 | |
| 1763 | if (baudrate > 75 && baudrate < 230400) { |
| 1764 | /* get the divisor */ |
| 1765 | custom = (__u16) (230400L / baudrate); |
| 1766 | |
| 1767 | /* Check for round off */ |
| 1768 | round1 = (__u16) (2304000L / baudrate); |
| 1769 | round = (__u16) (round1 - (custom * 10)); |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1770 | if (round > 4) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1771 | custom++; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1772 | *divisor = custom; |
| 1773 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1774 | dev_dbg(&port->dev, " Baud %d = %d\n", baudrate, custom); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1775 | return 0; |
| 1776 | } |
| 1777 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1778 | dev_dbg(&port->dev, "%s", " Baud calculation Failed...\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1779 | return -1; |
| 1780 | #endif |
| 1781 | } |
| 1782 | |
| 1783 | /***************************************************************************** |
| 1784 | * mos7840_send_cmd_write_baud_rate |
| 1785 | * this function sends the proper command to change the baud rate of the |
| 1786 | * specified port. |
| 1787 | *****************************************************************************/ |
| 1788 | |
| 1789 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, |
| 1790 | int baudRate) |
| 1791 | { |
| 1792 | int divisor = 0; |
| 1793 | int status; |
| 1794 | __u16 Data; |
| 1795 | unsigned char number; |
| 1796 | __u16 clk_sel_val; |
| 1797 | struct usb_serial_port *port; |
| 1798 | |
| 1799 | if (mos7840_port == NULL) |
| 1800 | return -1; |
| 1801 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1802 | port = mos7840_port->port; |
| 1803 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1804 | return -1; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1805 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1806 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1807 | return -1; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1808 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1809 | number = mos7840_port->port->number - mos7840_port->port->serial->minor; |
| 1810 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1811 | dev_dbg(&port->dev, "%s - port = %d, baud = %d\n", __func__, |
| 1812 | mos7840_port->port->number, baudRate); |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1813 | /* reset clk_uart_sel in spregOffset */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1814 | if (baudRate > 115200) { |
| 1815 | #ifdef HW_flow_control |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1816 | /* NOTE: need to see the pther register to modify */ |
| 1817 | /* setting h/w flow control bit to 1 */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1818 | Data = 0x2b; |
| 1819 | mos7840_port->shadowMCR = Data; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1820 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
| 1821 | Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1822 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1823 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1824 | return -1; |
| 1825 | } |
| 1826 | #endif |
| 1827 | |
| 1828 | } else { |
| 1829 | #ifdef HW_flow_control |
Donald Lee | 093ea2d | 2012-03-14 15:26:33 +0800 | [diff] [blame] | 1830 | /* setting h/w flow control bit to 0 */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1831 | Data = 0xb; |
| 1832 | mos7840_port->shadowMCR = Data; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1833 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
| 1834 | Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1835 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1836 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1837 | return -1; |
| 1838 | } |
| 1839 | #endif |
| 1840 | |
| 1841 | } |
| 1842 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1843 | if (1) { /* baudRate <= 115200) */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1844 | clk_sel_val = 0x0; |
| 1845 | Data = 0x0; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1846 | status = mos7840_calc_baud_rate_divisor(port, baudRate, &divisor, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1847 | &clk_sel_val); |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1848 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
| 1849 | &Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1850 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1851 | dev_dbg(&port->dev, "reading spreg failed in set_serial_baud\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1852 | return -1; |
| 1853 | } |
| 1854 | Data = (Data & 0x8f) | clk_sel_val; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1855 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
| 1856 | Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1857 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1858 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1859 | return -1; |
| 1860 | } |
| 1861 | /* Calculate the Divisor */ |
| 1862 | |
| 1863 | if (status) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 1864 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1865 | return status; |
| 1866 | } |
| 1867 | /* Enable access to divisor latch */ |
| 1868 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; |
| 1869 | mos7840_port->shadowLCR = Data; |
| 1870 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
| 1871 | |
| 1872 | /* Write the divisor */ |
| 1873 | Data = (unsigned char)(divisor & 0xff); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1874 | dev_dbg(&port->dev, "set_serial_baud Value to write DLL is %x\n", Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1875 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
| 1876 | |
| 1877 | Data = (unsigned char)((divisor & 0xff00) >> 8); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1878 | dev_dbg(&port->dev, "set_serial_baud Value to write DLM is %x\n", Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1879 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
| 1880 | |
| 1881 | /* Disable access to divisor latch */ |
| 1882 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; |
| 1883 | mos7840_port->shadowLCR = Data; |
| 1884 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
| 1885 | |
| 1886 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1887 | return status; |
| 1888 | } |
| 1889 | |
| 1890 | /***************************************************************************** |
| 1891 | * mos7840_change_port_settings |
| 1892 | * This routine is called to set the UART on the device to match |
| 1893 | * the specified new settings. |
| 1894 | *****************************************************************************/ |
| 1895 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1896 | static void mos7840_change_port_settings(struct tty_struct *tty, |
| 1897 | struct moschip_port *mos7840_port, struct ktermios *old_termios) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1898 | { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1899 | int baud; |
| 1900 | unsigned cflag; |
| 1901 | unsigned iflag; |
| 1902 | __u8 lData; |
| 1903 | __u8 lParity; |
| 1904 | __u8 lStop; |
| 1905 | int status; |
| 1906 | __u16 Data; |
| 1907 | struct usb_serial_port *port; |
| 1908 | struct usb_serial *serial; |
| 1909 | |
| 1910 | if (mos7840_port == NULL) |
| 1911 | return; |
| 1912 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1913 | port = mos7840_port->port; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1914 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1915 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1916 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1917 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1918 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1919 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1920 | |
| 1921 | serial = port->serial; |
| 1922 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1923 | if (!mos7840_port->open) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1924 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1925 | return; |
| 1926 | } |
| 1927 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1928 | lData = LCR_BITS_8; |
| 1929 | lStop = LCR_STOP_1; |
| 1930 | lParity = LCR_PAR_NONE; |
| 1931 | |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 1932 | cflag = tty->termios.c_cflag; |
| 1933 | iflag = tty->termios.c_iflag; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1934 | |
| 1935 | /* Change the number of bits */ |
| 1936 | if (cflag & CSIZE) { |
| 1937 | switch (cflag & CSIZE) { |
| 1938 | case CS5: |
| 1939 | lData = LCR_BITS_5; |
| 1940 | break; |
| 1941 | |
| 1942 | case CS6: |
| 1943 | lData = LCR_BITS_6; |
| 1944 | break; |
| 1945 | |
| 1946 | case CS7: |
| 1947 | lData = LCR_BITS_7; |
| 1948 | break; |
| 1949 | default: |
| 1950 | case CS8: |
| 1951 | lData = LCR_BITS_8; |
| 1952 | break; |
| 1953 | } |
| 1954 | } |
| 1955 | /* Change the Parity bit */ |
| 1956 | if (cflag & PARENB) { |
| 1957 | if (cflag & PARODD) { |
| 1958 | lParity = LCR_PAR_ODD; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1959 | dev_dbg(&port->dev, "%s - parity = odd\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1960 | } else { |
| 1961 | lParity = LCR_PAR_EVEN; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1962 | dev_dbg(&port->dev, "%s - parity = even\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1963 | } |
| 1964 | |
| 1965 | } else { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1966 | dev_dbg(&port->dev, "%s - parity = none\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1967 | } |
| 1968 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 1969 | if (cflag & CMSPAR) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1970 | lParity = lParity | 0x20; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1971 | |
| 1972 | /* Change the Stop bit */ |
| 1973 | if (cflag & CSTOPB) { |
| 1974 | lStop = LCR_STOP_2; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1975 | dev_dbg(&port->dev, "%s - stop bits = 2\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1976 | } else { |
| 1977 | lStop = LCR_STOP_1; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1978 | dev_dbg(&port->dev, "%s - stop bits = 1\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1979 | } |
| 1980 | |
| 1981 | /* Update the LCR with the correct value */ |
| 1982 | mos7840_port->shadowLCR &= |
| 1983 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); |
| 1984 | mos7840_port->shadowLCR |= (lData | lParity | lStop); |
| 1985 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 1986 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is %x\n", __func__, |
| 1987 | mos7840_port->shadowLCR); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 1988 | /* Disable Interrupts */ |
| 1989 | Data = 0x00; |
| 1990 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
| 1991 | |
| 1992 | Data = 0x00; |
| 1993 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
| 1994 | |
| 1995 | Data = 0xcf; |
| 1996 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
| 1997 | |
| 1998 | /* Send the updated LCR value to the mos7840 */ |
| 1999 | Data = mos7840_port->shadowLCR; |
| 2000 | |
| 2001 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
| 2002 | |
| 2003 | Data = 0x00b; |
| 2004 | mos7840_port->shadowMCR = Data; |
| 2005 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
| 2006 | Data = 0x00b; |
| 2007 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
| 2008 | |
| 2009 | /* set up the MCR register and send it to the mos7840 */ |
| 2010 | |
| 2011 | mos7840_port->shadowMCR = MCR_MASTER_IE; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2012 | if (cflag & CBAUD) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2013 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2014 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2015 | if (cflag & CRTSCTS) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2016 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2017 | else |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2018 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2019 | |
| 2020 | Data = mos7840_port->shadowMCR; |
| 2021 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
| 2022 | |
| 2023 | /* Determine divisor based on baud rate */ |
| 2024 | baud = tty_get_baud_rate(tty); |
| 2025 | |
| 2026 | if (!baud) { |
| 2027 | /* pick a default, any default... */ |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2028 | dev_dbg(&port->dev, "%s", "Picked default baud...\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2029 | baud = 9600; |
| 2030 | } |
| 2031 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2032 | dev_dbg(&port->dev, "%s - baud rate = %d\n", __func__, baud); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2033 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
| 2034 | |
| 2035 | /* Enable Interrupts */ |
| 2036 | Data = 0x0c; |
| 2037 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
| 2038 | |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 2039 | if (mos7840_port->read_urb_busy == false) { |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 2040 | mos7840_port->read_urb_busy = true; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2041 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2042 | if (status) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2043 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2044 | status); |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 2045 | mos7840_port->read_urb_busy = false; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2046 | } |
| 2047 | } |
| 2048 | wake_up(&mos7840_port->delta_msr_wait); |
| 2049 | mos7840_port->delta_msr_cond = 1; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2050 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, |
| 2051 | mos7840_port->shadowLCR); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2052 | } |
| 2053 | |
| 2054 | /***************************************************************************** |
| 2055 | * mos7840_set_termios |
| 2056 | * this function is called by the tty driver when it wants to change |
| 2057 | * the termios structure |
| 2058 | *****************************************************************************/ |
| 2059 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 2060 | static void mos7840_set_termios(struct tty_struct *tty, |
| 2061 | struct usb_serial_port *port, |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 2062 | struct ktermios *old_termios) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2063 | { |
| 2064 | int status; |
| 2065 | unsigned int cflag; |
| 2066 | struct usb_serial *serial; |
| 2067 | struct moschip_port *mos7840_port; |
Greg Kroah-Hartman | 3363155 | 2012-05-03 16:44:33 -0700 | [diff] [blame] | 2068 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2069 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2070 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2071 | |
| 2072 | serial = port->serial; |
| 2073 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2074 | if (mos7840_serial_paranoia_check(serial, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2075 | return; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2076 | |
| 2077 | mos7840_port = mos7840_get_port_private(port); |
| 2078 | |
| 2079 | if (mos7840_port == NULL) |
| 2080 | return; |
| 2081 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2082 | if (!mos7840_port->open) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2083 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2084 | return; |
| 2085 | } |
| 2086 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2087 | dev_dbg(&port->dev, "%s", "setting termios - \n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2088 | |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 2089 | cflag = tty->termios.c_cflag; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2090 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2091 | dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, |
Linus Torvalds | d9a8074 | 2012-10-01 13:23:01 -0700 | [diff] [blame] | 2092 | tty->termios.c_cflag, RELEVANT_IFLAG(tty->termios.c_iflag)); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2093 | dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, |
| 2094 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); |
| 2095 | dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2096 | |
| 2097 | /* change the port settings to the new ones specified */ |
| 2098 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 2099 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2100 | |
| 2101 | if (!mos7840_port->read_urb) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2102 | dev_dbg(&port->dev, "%s", "URB KILLED !!!!!\n"); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2103 | return; |
| 2104 | } |
| 2105 | |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 2106 | if (mos7840_port->read_urb_busy == false) { |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 2107 | mos7840_port->read_urb_busy = true; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2108 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
| 2109 | if (status) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2110 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2111 | status); |
Greg Kroah-Hartman | 50de36f | 2008-12-10 16:00:30 -0800 | [diff] [blame] | 2112 | mos7840_port->read_urb_busy = false; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2113 | } |
| 2114 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2115 | } |
| 2116 | |
| 2117 | /***************************************************************************** |
| 2118 | * mos7840_get_lsr_info - get line status register info |
| 2119 | * |
| 2120 | * Purpose: Let user call ioctl() to get info when the UART physically |
| 2121 | * is emptied. On bus types like RS485, the transmitter must |
| 2122 | * release the bus after transmitting. This must be done when |
| 2123 | * the transmit shift register is empty, not be done when the |
| 2124 | * transmit holding register is empty. This functionality |
| 2125 | * allows an RS485 driver to be written in user space. |
| 2126 | *****************************************************************************/ |
| 2127 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 2128 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
Al Viro | 97c4965 | 2006-10-09 20:29:03 +0100 | [diff] [blame] | 2129 | unsigned int __user *value) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2130 | { |
| 2131 | int count; |
| 2132 | unsigned int result = 0; |
| 2133 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 2134 | count = mos7840_chars_in_buffer(tty); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2135 | if (count == 0) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2136 | result = TIOCSER_TEMT; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2137 | |
| 2138 | if (copy_to_user(value, &result, sizeof(int))) |
| 2139 | return -EFAULT; |
| 2140 | return 0; |
| 2141 | } |
| 2142 | |
| 2143 | /***************************************************************************** |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2144 | * mos7840_get_serial_info |
| 2145 | * function to get information about serial port |
| 2146 | *****************************************************************************/ |
| 2147 | |
| 2148 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, |
Al Viro | 97c4965 | 2006-10-09 20:29:03 +0100 | [diff] [blame] | 2149 | struct serial_struct __user *retinfo) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2150 | { |
| 2151 | struct serial_struct tmp; |
| 2152 | |
| 2153 | if (mos7840_port == NULL) |
| 2154 | return -1; |
| 2155 | |
| 2156 | if (!retinfo) |
| 2157 | return -EFAULT; |
| 2158 | |
| 2159 | memset(&tmp, 0, sizeof(tmp)); |
| 2160 | |
| 2161 | tmp.type = PORT_16550A; |
| 2162 | tmp.line = mos7840_port->port->serial->minor; |
| 2163 | tmp.port = mos7840_port->port->number; |
| 2164 | tmp.irq = 0; |
| 2165 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; |
| 2166 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; |
| 2167 | tmp.baud_base = 9600; |
| 2168 | tmp.close_delay = 5 * HZ; |
| 2169 | tmp.closing_wait = 30 * HZ; |
| 2170 | |
| 2171 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) |
| 2172 | return -EFAULT; |
| 2173 | return 0; |
| 2174 | } |
| 2175 | |
Alan Cox | 0bca1b9 | 2010-09-16 18:21:40 +0100 | [diff] [blame] | 2176 | static int mos7840_get_icount(struct tty_struct *tty, |
| 2177 | struct serial_icounter_struct *icount) |
| 2178 | { |
| 2179 | struct usb_serial_port *port = tty->driver_data; |
| 2180 | struct moschip_port *mos7840_port; |
| 2181 | struct async_icount cnow; |
| 2182 | |
| 2183 | mos7840_port = mos7840_get_port_private(port); |
| 2184 | cnow = mos7840_port->icount; |
| 2185 | |
| 2186 | smp_rmb(); |
| 2187 | icount->cts = cnow.cts; |
| 2188 | icount->dsr = cnow.dsr; |
| 2189 | icount->rng = cnow.rng; |
| 2190 | icount->dcd = cnow.dcd; |
| 2191 | icount->rx = cnow.rx; |
| 2192 | icount->tx = cnow.tx; |
| 2193 | icount->frame = cnow.frame; |
| 2194 | icount->overrun = cnow.overrun; |
| 2195 | icount->parity = cnow.parity; |
| 2196 | icount->brk = cnow.brk; |
| 2197 | icount->buf_overrun = cnow.buf_overrun; |
| 2198 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2199 | dev_dbg(&port->dev, "%s TIOCGICOUNT RX=%d, TX=%d\n", __func__, |
| 2200 | icount->rx, icount->tx); |
Alan Cox | 0bca1b9 | 2010-09-16 18:21:40 +0100 | [diff] [blame] | 2201 | return 0; |
| 2202 | } |
| 2203 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2204 | /***************************************************************************** |
| 2205 | * SerialIoctl |
| 2206 | * this function handles any ioctl calls to the driver |
| 2207 | *****************************************************************************/ |
| 2208 | |
Alan Cox | 00a0d0d | 2011-02-14 16:27:06 +0000 | [diff] [blame] | 2209 | static int mos7840_ioctl(struct tty_struct *tty, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2210 | unsigned int cmd, unsigned long arg) |
| 2211 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 2212 | struct usb_serial_port *port = tty->driver_data; |
Al Viro | 97c4965 | 2006-10-09 20:29:03 +0100 | [diff] [blame] | 2213 | void __user *argp = (void __user *)arg; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2214 | struct moschip_port *mos7840_port; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2215 | |
| 2216 | struct async_icount cnow; |
| 2217 | struct async_icount cprev; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2218 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2219 | if (mos7840_port_paranoia_check(port, __func__)) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2220 | return -1; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2221 | |
| 2222 | mos7840_port = mos7840_get_port_private(port); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2223 | |
| 2224 | if (mos7840_port == NULL) |
| 2225 | return -1; |
| 2226 | |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2227 | dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2228 | |
| 2229 | switch (cmd) { |
| 2230 | /* return number of bytes available */ |
| 2231 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2232 | case TIOCSERGETLSR: |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2233 | dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 2234 | return mos7840_get_lsr_info(tty, argp); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2235 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2236 | case TIOCGSERIAL: |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2237 | dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); |
Al Viro | 97c4965 | 2006-10-09 20:29:03 +0100 | [diff] [blame] | 2238 | return mos7840_get_serial_info(mos7840_port, argp); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2239 | |
| 2240 | case TIOCSSERIAL: |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2241 | dev_dbg(&port->dev, "%s TIOCSSERIAL\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2242 | break; |
| 2243 | |
| 2244 | case TIOCMIWAIT: |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2245 | dev_dbg(&port->dev, "%s TIOCMIWAIT\n", __func__); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2246 | cprev = mos7840_port->icount; |
| 2247 | while (1) { |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2248 | /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2249 | mos7840_port->delta_msr_cond = 0; |
| 2250 | wait_event_interruptible(mos7840_port->delta_msr_wait, |
| 2251 | (mos7840_port-> |
| 2252 | delta_msr_cond == 1)); |
| 2253 | |
| 2254 | /* see if a signal did it */ |
| 2255 | if (signal_pending(current)) |
| 2256 | return -ERESTARTSYS; |
| 2257 | cnow = mos7840_port->icount; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2258 | smp_rmb(); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2259 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
| 2260 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) |
| 2261 | return -EIO; /* no change => error */ |
| 2262 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
| 2263 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || |
| 2264 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || |
| 2265 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { |
| 2266 | return 0; |
| 2267 | } |
| 2268 | cprev = cnow; |
| 2269 | } |
| 2270 | /* NOTREACHED */ |
| 2271 | break; |
| 2272 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2273 | default: |
| 2274 | break; |
| 2275 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2276 | return -ENOIOCTLCMD; |
| 2277 | } |
| 2278 | |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 2279 | static int mos7810_check(struct usb_serial *serial) |
| 2280 | { |
| 2281 | int i, pass_count = 0; |
| 2282 | __u16 data = 0, mcr_data = 0; |
| 2283 | __u16 test_pattern = 0x55AA; |
| 2284 | |
| 2285 | /* Store MCR setting */ |
| 2286 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 2287 | MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, |
| 2288 | &mcr_data, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
| 2289 | |
| 2290 | for (i = 0; i < 16; i++) { |
| 2291 | /* Send the 1-bit test pattern out to MCS7810 test pin */ |
| 2292 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| 2293 | MCS_WRREQ, MCS_WR_RTYPE, |
| 2294 | (0x0300 | (((test_pattern >> i) & 0x0001) << 1)), |
| 2295 | MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); |
| 2296 | |
| 2297 | /* Read the test pattern back */ |
| 2298 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 2299 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data, |
| 2300 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
| 2301 | |
| 2302 | /* If this is a MCS7810 device, both test patterns must match */ |
| 2303 | if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) |
| 2304 | break; |
| 2305 | |
| 2306 | pass_count++; |
| 2307 | } |
| 2308 | |
| 2309 | /* Restore MCR setting */ |
| 2310 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), MCS_WRREQ, |
| 2311 | MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, |
| 2312 | 0, MOS_WDR_TIMEOUT); |
| 2313 | |
| 2314 | if (pass_count == 16) |
| 2315 | return 1; |
| 2316 | |
| 2317 | return 0; |
| 2318 | } |
| 2319 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2320 | static int mos7840_calc_num_ports(struct usb_serial *serial) |
| 2321 | { |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 2322 | __u16 data = 0x00; |
Donald Lee | 093ea2d | 2012-03-14 15:26:33 +0800 | [diff] [blame] | 2323 | int mos7840_num_ports; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2324 | |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 2325 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 2326 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data, |
Donald Lee | 093ea2d | 2012-03-14 15:26:33 +0800 | [diff] [blame] | 2327 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
| 2328 | |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 2329 | if (serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7810 || |
| 2330 | serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7820) { |
| 2331 | device_type = serial->dev->descriptor.idProduct; |
Donald Lee | 093ea2d | 2012-03-14 15:26:33 +0800 | [diff] [blame] | 2332 | } else { |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 2333 | /* For a MCS7840 device GPIO0 must be set to 1 */ |
| 2334 | if ((data & 0x01) == 1) |
| 2335 | device_type = MOSCHIP_DEVICE_ID_7840; |
| 2336 | else if (mos7810_check(serial)) |
| 2337 | device_type = MOSCHIP_DEVICE_ID_7810; |
| 2338 | else |
| 2339 | device_type = MOSCHIP_DEVICE_ID_7820; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2340 | } |
Donald Lee | 093ea2d | 2012-03-14 15:26:33 +0800 | [diff] [blame] | 2341 | |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 2342 | mos7840_num_ports = (device_type >> 4) & 0x000F; |
| 2343 | serial->num_bulk_in = mos7840_num_ports; |
| 2344 | serial->num_bulk_out = mos7840_num_ports; |
| 2345 | serial->num_ports = mos7840_num_ports; |
| 2346 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2347 | return mos7840_num_ports; |
| 2348 | } |
| 2349 | |
| 2350 | /**************************************************************************** |
| 2351 | * mos7840_startup |
| 2352 | ****************************************************************************/ |
| 2353 | |
| 2354 | static int mos7840_startup(struct usb_serial *serial) |
| 2355 | { |
| 2356 | struct moschip_port *mos7840_port; |
| 2357 | struct usb_device *dev; |
| 2358 | int i, status; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2359 | __u16 Data; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2360 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2361 | dev = serial->dev; |
| 2362 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2363 | /* we set up the pointers to the endpoints in the mos7840_open * |
| 2364 | * function, as the structures aren't created yet. */ |
| 2365 | |
| 2366 | /* set up port private structures */ |
| 2367 | for (i = 0; i < serial->num_ports; ++i) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2368 | dev_dbg(&dev->dev, "mos7840_startup: configuring port %d............\n", i); |
Burman Yan | 7ac9da1 | 2006-11-22 20:54:38 +0200 | [diff] [blame] | 2369 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2370 | if (mos7840_port == NULL) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 2371 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2372 | status = -ENOMEM; |
| 2373 | i--; /* don't follow NULL pointer cleaning up */ |
| 2374 | goto error; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2375 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2376 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2377 | /* Initialize all port interrupt end point to port 0 int |
| 2378 | * endpoint. Our device has only one interrupt end point |
| 2379 | * common to all port */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2380 | |
| 2381 | mos7840_port->port = serial->port[i]; |
| 2382 | mos7840_set_port_private(serial->port[i], mos7840_port); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2383 | spin_lock_init(&mos7840_port->pool_lock); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2384 | |
Tony Cook | 37768ad | 2009-04-18 22:42:18 +0930 | [diff] [blame] | 2385 | /* minor is not initialised until later by |
| 2386 | * usb-serial.c:get_free_serial() and cannot therefore be used |
| 2387 | * to index device instances */ |
| 2388 | mos7840_port->port_num = i + 1; |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2389 | dev_dbg(&dev->dev, "serial->port[i]->number = %d\n", serial->port[i]->number); |
| 2390 | dev_dbg(&dev->dev, "serial->port[i]->serial->minor = %d\n", serial->port[i]->serial->minor); |
| 2391 | dev_dbg(&dev->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num); |
| 2392 | dev_dbg(&dev->dev, "serial->minor = %d\n", serial->minor); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2393 | |
| 2394 | if (mos7840_port->port_num == 1) { |
| 2395 | mos7840_port->SpRegOffset = 0x0; |
| 2396 | mos7840_port->ControlRegOffset = 0x1; |
| 2397 | mos7840_port->DcrRegOffset = 0x4; |
| 2398 | } else if ((mos7840_port->port_num == 2) |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2399 | && (serial->num_ports == 4)) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2400 | mos7840_port->SpRegOffset = 0x8; |
| 2401 | mos7840_port->ControlRegOffset = 0x9; |
| 2402 | mos7840_port->DcrRegOffset = 0x16; |
| 2403 | } else if ((mos7840_port->port_num == 2) |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2404 | && (serial->num_ports == 2)) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2405 | mos7840_port->SpRegOffset = 0xa; |
| 2406 | mos7840_port->ControlRegOffset = 0xb; |
| 2407 | mos7840_port->DcrRegOffset = 0x19; |
| 2408 | } else if ((mos7840_port->port_num == 3) |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2409 | && (serial->num_ports == 4)) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2410 | mos7840_port->SpRegOffset = 0xa; |
| 2411 | mos7840_port->ControlRegOffset = 0xb; |
| 2412 | mos7840_port->DcrRegOffset = 0x19; |
| 2413 | } else if ((mos7840_port->port_num == 4) |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2414 | && (serial->num_ports == 4)) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2415 | mos7840_port->SpRegOffset = 0xc; |
| 2416 | mos7840_port->ControlRegOffset = 0xd; |
| 2417 | mos7840_port->DcrRegOffset = 0x1c; |
| 2418 | } |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2419 | mos7840_dump_serial_port(serial->port[i], mos7840_port); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2420 | mos7840_set_port_private(serial->port[i], mos7840_port); |
| 2421 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2422 | /* enable rx_disable bit in control register */ |
| 2423 | status = mos7840_get_reg_sync(serial->port[i], |
| 2424 | mos7840_port->ControlRegOffset, &Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2425 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2426 | dev_dbg(&dev->dev, "Reading ControlReg failed status-0x%x\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2427 | break; |
| 2428 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2429 | dev_dbg(&dev->dev, "ControlReg Reading success val is %x, status%d\n", Data, status); |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2430 | Data |= 0x08; /* setting driver done bit */ |
| 2431 | Data |= 0x04; /* sp1_bit to have cts change reflect in |
| 2432 | modem status reg */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2433 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2434 | /* Data |= 0x20; //rx_disable bit */ |
| 2435 | status = mos7840_set_reg_sync(serial->port[i], |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2436 | mos7840_port->ControlRegOffset, Data); |
| 2437 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2438 | dev_dbg(&dev->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2439 | break; |
| 2440 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2441 | dev_dbg(&dev->dev, "ControlReg Writing success(rx_disable) status%d\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2442 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2443 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 |
| 2444 | and 0x24 in DCR3 */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2445 | Data = 0x01; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2446 | status = mos7840_set_reg_sync(serial->port[i], |
| 2447 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2448 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2449 | dev_dbg(&dev->dev, "Writing DCR0 failed status-0x%x\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2450 | break; |
| 2451 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2452 | dev_dbg(&dev->dev, "DCR0 Writing success status%d\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2453 | |
| 2454 | Data = 0x05; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2455 | status = mos7840_set_reg_sync(serial->port[i], |
| 2456 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2457 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2458 | dev_dbg(&dev->dev, "Writing DCR1 failed status-0x%x\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2459 | break; |
| 2460 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2461 | dev_dbg(&dev->dev, "DCR1 Writing success status%d\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2462 | |
| 2463 | Data = 0x24; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2464 | status = mos7840_set_reg_sync(serial->port[i], |
| 2465 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2466 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2467 | dev_dbg(&dev->dev, "Writing DCR2 failed status-0x%x\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2468 | break; |
| 2469 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2470 | dev_dbg(&dev->dev, "DCR2 Writing success status%d\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2471 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2472 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2473 | Data = 0x0; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2474 | status = mos7840_set_reg_sync(serial->port[i], |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2475 | CLK_START_VALUE_REGISTER, Data); |
| 2476 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2477 | dev_dbg(&dev->dev, "Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2478 | break; |
| 2479 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2480 | dev_dbg(&dev->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2481 | |
| 2482 | Data = 0x20; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2483 | status = mos7840_set_reg_sync(serial->port[i], |
| 2484 | CLK_MULTI_REGISTER, Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2485 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2486 | dev_dbg(&dev->dev, "Writing CLK_MULTI_REGISTER failed status-0x%x\n", status); |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2487 | goto error; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2488 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2489 | dev_dbg(&dev->dev, "CLK_MULTI_REGISTER Writing success status%d\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2490 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2491 | /* write value 0x0 to scratchpad register */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2492 | Data = 0x00; |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2493 | status = mos7840_set_uart_reg(serial->port[i], |
| 2494 | SCRATCH_PAD_REGISTER, Data); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2495 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2496 | dev_dbg(&dev->dev, "Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2497 | break; |
| 2498 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2499 | dev_dbg(&dev->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2500 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2501 | /* Zero Length flag register */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2502 | if ((mos7840_port->port_num != 1) |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2503 | && (serial->num_ports == 2)) { |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2504 | |
| 2505 | Data = 0xff; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2506 | status = mos7840_set_reg_sync(serial->port[i], |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2507 | (__u16) (ZLP_REG1 + |
| 2508 | ((__u16)mos7840_port->port_num)), Data); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2509 | dev_dbg(&dev->dev, "ZLIP offset %x\n", |
| 2510 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num))); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2511 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2512 | dev_dbg(&dev->dev, "Writing ZLP_REG%d failed status-0x%x\n", i + 2, status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2513 | break; |
| 2514 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2515 | dev_dbg(&dev->dev, "ZLP_REG%d Writing success status%d\n", i + 2, status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2516 | } else { |
| 2517 | Data = 0xff; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2518 | status = mos7840_set_reg_sync(serial->port[i], |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2519 | (__u16) (ZLP_REG1 + |
| 2520 | ((__u16)mos7840_port->port_num) - 0x1), Data); |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2521 | dev_dbg(&dev->dev, "ZLIP offset %x\n", |
| 2522 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1)); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2523 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2524 | dev_dbg(&dev->dev, "Writing ZLP_REG%d failed status-0x%x\n", i + 1, status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2525 | break; |
| 2526 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2527 | dev_dbg(&dev->dev, "ZLP_REG%d Writing success status%d\n", i + 1, status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2528 | |
| 2529 | } |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2530 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2531 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2532 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), |
| 2533 | GFP_KERNEL); |
| 2534 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || |
| 2535 | !mos7840_port->dr) { |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2536 | status = -ENOMEM; |
| 2537 | goto error; |
| 2538 | } |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 2539 | |
| 2540 | mos7840_port->has_led = false; |
| 2541 | |
| 2542 | /* Initialize LED timers */ |
| 2543 | if (device_type == MOSCHIP_DEVICE_ID_7810) { |
| 2544 | mos7840_port->has_led = true; |
| 2545 | |
| 2546 | init_timer(&mos7840_port->led_timer1); |
| 2547 | mos7840_port->led_timer1.function = mos7840_led_off; |
| 2548 | mos7840_port->led_timer1.expires = |
| 2549 | jiffies + msecs_to_jiffies(LED_ON_MS); |
| 2550 | mos7840_port->led_timer1.data = |
| 2551 | (unsigned long)mos7840_port; |
| 2552 | |
| 2553 | init_timer(&mos7840_port->led_timer2); |
| 2554 | mos7840_port->led_timer2.function = |
| 2555 | mos7840_led_flag_off; |
| 2556 | mos7840_port->led_timer2.expires = |
| 2557 | jiffies + msecs_to_jiffies(LED_OFF_MS); |
| 2558 | mos7840_port->led_timer2.data = |
| 2559 | (unsigned long)mos7840_port; |
| 2560 | |
| 2561 | mos7840_port->led_flag = false; |
| 2562 | |
| 2563 | /* Turn off LED */ |
| 2564 | mos7840_set_led_sync(serial->port[i], |
| 2565 | MODEM_CONTROL_REGISTER, 0x0300); |
| 2566 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2567 | } |
| 2568 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2569 | /* Zero Length flag enable */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2570 | Data = 0x0f; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2571 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); |
| 2572 | if (status < 0) { |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2573 | dev_dbg(&dev->dev, "Writing ZLP_REG5 failed status-0x%x\n", status); |
Roel Kluin | 7ced46c | 2007-10-27 03:36:37 +0200 | [diff] [blame] | 2574 | goto error; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2575 | } else |
Greg Kroah-Hartman | 9c134a1 | 2012-09-14 16:06:04 -0700 | [diff] [blame] | 2576 | dev_dbg(&dev->dev, "ZLP_REG5 Writing success status%d\n", status); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2577 | |
| 2578 | /* setting configuration feature to one */ |
| 2579 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
Mark Ferrell | 1e65848 | 2012-07-24 13:38:31 -0500 | [diff] [blame] | 2580 | (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, MOS_WDR_TIMEOUT); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2581 | return 0; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2582 | error: |
| 2583 | for (/* nothing */; i >= 0; i--) { |
| 2584 | mos7840_port = mos7840_get_port_private(serial->port[i]); |
| 2585 | |
| 2586 | kfree(mos7840_port->dr); |
| 2587 | kfree(mos7840_port->ctrl_buf); |
| 2588 | usb_free_urb(mos7840_port->control_urb); |
| 2589 | kfree(mos7840_port); |
| 2590 | serial->port[i] = NULL; |
| 2591 | } |
| 2592 | return status; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2593 | } |
| 2594 | |
| 2595 | /**************************************************************************** |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 2596 | * mos7840_disconnect |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2597 | * This function is called whenever the device is removed from the usb bus. |
| 2598 | ****************************************************************************/ |
| 2599 | |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 2600 | static void mos7840_disconnect(struct usb_serial *serial) |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2601 | { |
| 2602 | int i; |
Oliver Neukum | 0de9a70 | 2007-03-16 20:28:28 +0100 | [diff] [blame] | 2603 | unsigned long flags; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2604 | struct moschip_port *mos7840_port; |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2605 | |
Alan Cox | 880af9d | 2008-07-22 11:16:12 +0100 | [diff] [blame] | 2606 | /* check for the ports to be closed,close the ports and disconnect */ |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2607 | |
| 2608 | /* free private structure allocated for serial port * |
| 2609 | * stop reads and writes on all ports */ |
| 2610 | |
| 2611 | for (i = 0; i < serial->num_ports; ++i) { |
| 2612 | mos7840_port = mos7840_get_port_private(serial->port[i]); |
Tony Cook | 37768ad | 2009-04-18 22:42:18 +0930 | [diff] [blame] | 2613 | if (mos7840_port) { |
| 2614 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
| 2615 | mos7840_port->zombie = 1; |
| 2616 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
| 2617 | usb_kill_urb(mos7840_port->control_urb); |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 2618 | } |
| 2619 | } |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 2620 | } |
| 2621 | |
| 2622 | /**************************************************************************** |
| 2623 | * mos7840_release |
| 2624 | * This function is called when the usb_serial structure is freed. |
| 2625 | ****************************************************************************/ |
| 2626 | |
| 2627 | static void mos7840_release(struct usb_serial *serial) |
| 2628 | { |
| 2629 | int i; |
| 2630 | struct moschip_port *mos7840_port; |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 2631 | |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 2632 | /* check for the ports to be closed,close the ports and disconnect */ |
| 2633 | |
| 2634 | /* free private structure allocated for serial port * |
| 2635 | * stop reads and writes on all ports */ |
| 2636 | |
| 2637 | for (i = 0; i < serial->num_ports; ++i) { |
| 2638 | mos7840_port = mos7840_get_port_private(serial->port[i]); |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 2639 | if (mos7840_port) { |
Donald | 0eafe4d | 2012-04-19 15:00:45 +0800 | [diff] [blame] | 2640 | if (mos7840_port->has_led) { |
| 2641 | /* Turn off LED */ |
| 2642 | mos7840_set_led_sync(mos7840_port->port, |
| 2643 | MODEM_CONTROL_REGISTER, 0x0300); |
| 2644 | |
| 2645 | del_timer_sync(&mos7840_port->led_timer1); |
| 2646 | del_timer_sync(&mos7840_port->led_timer2); |
| 2647 | } |
Johan Hovold | 65a4cdb | 2012-10-25 13:35:09 +0200 | [diff] [blame^] | 2648 | usb_free_urb(mos7840_port->control_urb); |
Tony Cook | 37768ad | 2009-04-18 22:42:18 +0930 | [diff] [blame] | 2649 | kfree(mos7840_port->ctrl_buf); |
| 2650 | kfree(mos7840_port->dr); |
| 2651 | kfree(mos7840_port); |
| 2652 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2653 | } |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2654 | } |
| 2655 | |
| 2656 | static struct usb_serial_driver moschip7840_4port_device = { |
| 2657 | .driver = { |
| 2658 | .owner = THIS_MODULE, |
| 2659 | .name = "mos7840", |
| 2660 | }, |
| 2661 | .description = DRIVER_DESC, |
Greg Kroah-Hartman | 68e2411 | 2012-05-08 15:46:14 -0700 | [diff] [blame] | 2662 | .id_table = id_table, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2663 | .num_ports = 4, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2664 | .open = mos7840_open, |
| 2665 | .close = mos7840_close, |
| 2666 | .write = mos7840_write, |
| 2667 | .write_room = mos7840_write_room, |
| 2668 | .chars_in_buffer = mos7840_chars_in_buffer, |
| 2669 | .throttle = mos7840_throttle, |
| 2670 | .unthrottle = mos7840_unthrottle, |
| 2671 | .calc_num_ports = mos7840_calc_num_ports, |
| 2672 | #ifdef MCSSerialProbe |
| 2673 | .probe = mos7840_serial_probe, |
| 2674 | #endif |
| 2675 | .ioctl = mos7840_ioctl, |
| 2676 | .set_termios = mos7840_set_termios, |
| 2677 | .break_ctl = mos7840_break, |
| 2678 | .tiocmget = mos7840_tiocmget, |
| 2679 | .tiocmset = mos7840_tiocmset, |
Alan Cox | 0bca1b9 | 2010-09-16 18:21:40 +0100 | [diff] [blame] | 2680 | .get_icount = mos7840_get_icount, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2681 | .attach = mos7840_startup, |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 2682 | .disconnect = mos7840_disconnect, |
| 2683 | .release = mos7840_release, |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2684 | .read_bulk_callback = mos7840_bulk_in_callback, |
| 2685 | .read_int_callback = mos7840_interrupt_callback, |
| 2686 | }; |
| 2687 | |
Alan Stern | 4d2a7af | 2012-02-23 14:57:09 -0500 | [diff] [blame] | 2688 | static struct usb_serial_driver * const serial_drivers[] = { |
| 2689 | &moschip7840_4port_device, NULL |
| 2690 | }; |
| 2691 | |
Greg Kroah-Hartman | 68e2411 | 2012-05-08 15:46:14 -0700 | [diff] [blame] | 2692 | module_usb_serial_driver(serial_drivers, id_table); |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2693 | |
Paul B Schroeder | 3f54297 | 2006-08-31 19:41:47 -0500 | [diff] [blame] | 2694 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 2695 | MODULE_LICENSE("GPL"); |