Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1 | /* |
| 2 | * mos7720.c |
| 3 | * Controls the Moschip 7720 usb to dual port serial convertor |
| 4 | * |
| 5 | * Copyright 2006 Moschip Semiconductor Tech. Ltd. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation, version 2 of the License. |
| 10 | * |
| 11 | * Developed by: |
Greg Kroah-Hartman | 50d2dc7 | 2007-06-25 01:08:01 -0700 | [diff] [blame] | 12 | * Vijaya Kumar <vijaykumar.gn@gmail.com> |
| 13 | * Ajay Kumar <naanuajay@yahoo.com> |
| 14 | * Gurudeva <ngurudeva@yahoo.com> |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 15 | * |
| 16 | * Cleaned up from the original by: |
| 17 | * Greg Kroah-Hartman <gregkh@suse.de> |
| 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 | #include <linux/kernel.h> |
| 24 | #include <linux/errno.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/slab.h> |
| 27 | #include <linux/tty.h> |
| 28 | #include <linux/tty_driver.h> |
| 29 | #include <linux/tty_flip.h> |
| 30 | #include <linux/module.h> |
| 31 | #include <linux/spinlock.h> |
| 32 | #include <linux/serial.h> |
| 33 | #include <linux/serial_reg.h> |
| 34 | #include <linux/usb.h> |
| 35 | #include <linux/usb/serial.h> |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 36 | #include <linux/uaccess.h> |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 37 | |
| 38 | |
| 39 | /* |
| 40 | * Version Information |
| 41 | */ |
| 42 | #define DRIVER_VERSION "1.0.0.4F" |
| 43 | #define DRIVER_AUTHOR "Aspire Communications pvt Ltd." |
| 44 | #define DRIVER_DESC "Moschip USB Serial Driver" |
| 45 | |
| 46 | /* default urb timeout */ |
| 47 | #define MOS_WDR_TIMEOUT (HZ * 5) |
| 48 | |
| 49 | #define MOS_PORT1 0x0200 |
| 50 | #define MOS_PORT2 0x0300 |
| 51 | #define MOS_VENREG 0x0000 |
| 52 | #define MOS_MAX_PORT 0x02 |
| 53 | #define MOS_WRITE 0x0E |
| 54 | #define MOS_READ 0x0D |
| 55 | |
| 56 | /* Interrupt Rotinue Defines */ |
| 57 | #define SERIAL_IIR_RLS 0x06 |
| 58 | #define SERIAL_IIR_RDA 0x04 |
| 59 | #define SERIAL_IIR_CTI 0x0c |
| 60 | #define SERIAL_IIR_THR 0x02 |
| 61 | #define SERIAL_IIR_MS 0x00 |
| 62 | |
| 63 | #define NUM_URBS 16 /* URB Count */ |
| 64 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ |
| 65 | |
| 66 | /* This structure holds all of the local port information */ |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 67 | struct moschip_port { |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 68 | __u8 shadowLCR; /* last LCR value received */ |
| 69 | __u8 shadowMCR; /* last MCR value received */ |
| 70 | __u8 shadowMSR; /* last MSR value received */ |
| 71 | char open; |
| 72 | struct async_icount icount; |
| 73 | struct usb_serial_port *port; /* loop back to the owner */ |
| 74 | struct urb *write_urb_pool[NUM_URBS]; |
| 75 | }; |
| 76 | |
| 77 | /* This structure holds all of the individual serial device information */ |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 78 | struct moschip_serial { |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 79 | int interrupt_started; |
| 80 | }; |
| 81 | |
| 82 | static int debug; |
| 83 | |
| 84 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
| 85 | #define MOSCHIP_DEVICE_ID_7720 0x7720 |
| 86 | #define MOSCHIP_DEVICE_ID_7715 0x7715 |
| 87 | |
| 88 | static struct usb_device_id moschip_port_id_table [] = { |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 89 | { USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7720) }, |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 90 | { } /* terminating entry */ |
| 91 | }; |
| 92 | MODULE_DEVICE_TABLE(usb, moschip_port_id_table); |
| 93 | |
| 94 | |
| 95 | /* |
| 96 | * mos7720_interrupt_callback |
| 97 | * this is the callback function for when we have received data on the |
| 98 | * interrupt endpoint. |
| 99 | */ |
| 100 | static void mos7720_interrupt_callback(struct urb *urb) |
| 101 | { |
| 102 | int result; |
| 103 | int length; |
Greg Kroah-Hartman | 8110598 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 104 | int status = urb->status; |
Oliver Neukum | 325b70c | 2007-03-19 13:58:29 +0100 | [diff] [blame] | 105 | __u8 *data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 106 | __u8 sp1; |
| 107 | __u8 sp2; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 108 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 109 | dbg("%s", " : Entering\n"); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 110 | |
Greg Kroah-Hartman | 8110598 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 111 | switch (status) { |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 112 | case 0: |
| 113 | /* success */ |
| 114 | break; |
| 115 | case -ECONNRESET: |
| 116 | case -ENOENT: |
| 117 | case -ESHUTDOWN: |
| 118 | /* this urb is terminated, clean up */ |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 119 | dbg("%s - urb shutting down with status: %d", __func__, |
Greg Kroah-Hartman | 8110598 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 120 | status); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 121 | return; |
| 122 | default: |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 123 | dbg("%s - nonzero urb status received: %d", __func__, |
Greg Kroah-Hartman | 8110598 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 124 | status); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 125 | goto exit; |
| 126 | } |
| 127 | |
| 128 | length = urb->actual_length; |
| 129 | data = urb->transfer_buffer; |
| 130 | |
| 131 | /* Moschip get 4 bytes |
| 132 | * Byte 1 IIR Port 1 (port.number is 0) |
| 133 | * Byte 2 IIR Port 2 (port.number is 1) |
| 134 | * Byte 3 -------------- |
| 135 | * Byte 4 FIFO status for both */ |
Oliver Neukum | 325b70c | 2007-03-19 13:58:29 +0100 | [diff] [blame] | 136 | |
| 137 | /* the above description is inverted |
| 138 | * oneukum 2007-03-14 */ |
| 139 | |
| 140 | if (unlikely(length != 4)) { |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 141 | dbg("Wrong data !!!"); |
| 142 | return; |
| 143 | } |
| 144 | |
Oliver Neukum | 325b70c | 2007-03-19 13:58:29 +0100 | [diff] [blame] | 145 | sp1 = data[3]; |
| 146 | sp2 = data[2]; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 147 | |
Oliver Neukum | 325b70c | 2007-03-19 13:58:29 +0100 | [diff] [blame] | 148 | if ((sp1 | sp2) & 0x01) { |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 149 | /* No Interrupt Pending in both the ports */ |
| 150 | dbg("No Interrupt !!!"); |
| 151 | } else { |
| 152 | switch (sp1 & 0x0f) { |
| 153 | case SERIAL_IIR_RLS: |
| 154 | dbg("Serial Port 1: Receiver status error or address " |
| 155 | "bit detected in 9-bit mode\n"); |
| 156 | break; |
| 157 | case SERIAL_IIR_CTI: |
| 158 | dbg("Serial Port 1: Receiver time out"); |
| 159 | break; |
| 160 | case SERIAL_IIR_MS: |
| 161 | dbg("Serial Port 1: Modem status change"); |
| 162 | break; |
| 163 | } |
| 164 | |
| 165 | switch (sp2 & 0x0f) { |
| 166 | case SERIAL_IIR_RLS: |
| 167 | dbg("Serial Port 2: Receiver status error or address " |
| 168 | "bit detected in 9-bit mode"); |
| 169 | break; |
| 170 | case SERIAL_IIR_CTI: |
| 171 | dbg("Serial Port 2: Receiver time out"); |
| 172 | break; |
| 173 | case SERIAL_IIR_MS: |
| 174 | dbg("Serial Port 2: Modem status change"); |
| 175 | break; |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | exit: |
| 180 | result = usb_submit_urb(urb, GFP_ATOMIC); |
| 181 | if (result) |
| 182 | dev_err(&urb->dev->dev, |
| 183 | "%s - Error %d submitting control urb\n", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 184 | __func__, result); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 185 | return; |
| 186 | } |
| 187 | |
| 188 | /* |
| 189 | * mos7720_bulk_in_callback |
| 190 | * this is the callback function for when we have received data on the |
| 191 | * bulk in endpoint. |
| 192 | */ |
| 193 | static void mos7720_bulk_in_callback(struct urb *urb) |
| 194 | { |
Greg Kroah-Hartman | 8110598 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 195 | int retval; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 196 | unsigned char *data ; |
| 197 | struct usb_serial_port *port; |
| 198 | struct moschip_port *mos7720_port; |
| 199 | struct tty_struct *tty; |
Greg Kroah-Hartman | 8110598 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 200 | int status = urb->status; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 201 | |
Greg Kroah-Hartman | 8110598 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 202 | if (status) { |
| 203 | dbg("nonzero read bulk status received: %d", status); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 204 | return; |
| 205 | } |
| 206 | |
| 207 | mos7720_port = urb->context; |
| 208 | if (!mos7720_port) { |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 209 | dbg("%s", "NULL mos7720_port pointer \n"); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 210 | return ; |
| 211 | } |
| 212 | |
| 213 | port = mos7720_port->port; |
| 214 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 215 | dbg("Entering...%s", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 216 | |
| 217 | data = urb->transfer_buffer; |
| 218 | |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 219 | tty = tty_port_tty_get(&port->port); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 220 | if (tty && urb->actual_length) { |
| 221 | tty_buffer_request_room(tty, urb->actual_length); |
| 222 | tty_insert_flip_string(tty, data, urb->actual_length); |
| 223 | tty_flip_buffer_push(tty); |
| 224 | } |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 225 | tty_kref_put(tty); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 226 | |
| 227 | if (!port->read_urb) { |
| 228 | dbg("URB KILLED !!!"); |
| 229 | return; |
| 230 | } |
| 231 | |
| 232 | if (port->read_urb->status != -EINPROGRESS) { |
| 233 | port->read_urb->dev = port->serial->dev; |
| 234 | |
Greg Kroah-Hartman | 8110598 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 235 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
| 236 | if (retval) |
| 237 | dbg("usb_submit_urb(read bulk) failed, retval = %d", |
| 238 | retval); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 239 | } |
| 240 | } |
| 241 | |
| 242 | /* |
| 243 | * mos7720_bulk_out_data_callback |
| 244 | * this is the callback function for when we have finished sending serial |
| 245 | * data on the bulk out endpoint. |
| 246 | */ |
| 247 | static void mos7720_bulk_out_data_callback(struct urb *urb) |
| 248 | { |
| 249 | struct moschip_port *mos7720_port; |
| 250 | struct tty_struct *tty; |
Greg Kroah-Hartman | 8110598 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 251 | int status = urb->status; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 252 | |
Greg Kroah-Hartman | 8110598 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 253 | if (status) { |
| 254 | dbg("nonzero write bulk status received:%d", status); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 255 | return; |
| 256 | } |
| 257 | |
| 258 | mos7720_port = urb->context; |
| 259 | if (!mos7720_port) { |
| 260 | dbg("NULL mos7720_port pointer"); |
| 261 | return ; |
| 262 | } |
| 263 | |
| 264 | dbg("Entering ........."); |
| 265 | |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 266 | tty = tty_port_tty_get(&mos7720_port->port->port); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 267 | |
Jiri Slaby | b963a84 | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 268 | if (tty && mos7720_port->open) |
| 269 | tty_wakeup(tty); |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 270 | tty_kref_put(tty); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | /* |
| 274 | * send_mos_cmd |
| 275 | * this function will be used for sending command to device |
| 276 | */ |
| 277 | static int send_mos_cmd(struct usb_serial *serial, __u8 request, __u16 value, |
| 278 | __u16 index, void *data) |
| 279 | { |
| 280 | int status; |
| 281 | unsigned int pipe; |
| 282 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); |
| 283 | __u8 requesttype; |
| 284 | __u16 size = 0x0000; |
| 285 | |
| 286 | if (value < MOS_MAX_PORT) { |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 287 | if (product == MOSCHIP_DEVICE_ID_7715) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 288 | value = value*0x100+0x100; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 289 | else |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 290 | value = value*0x100+0x200; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 291 | } else { |
| 292 | value = 0x0000; |
| 293 | if ((product == MOSCHIP_DEVICE_ID_7715) && |
| 294 | (index != 0x08)) { |
| 295 | dbg("serial->product== MOSCHIP_DEVICE_ID_7715"); |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 296 | /* index = 0x01 ; */ |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 297 | } |
| 298 | } |
| 299 | |
| 300 | if (request == MOS_WRITE) { |
| 301 | request = (__u8)MOS_WRITE; |
| 302 | requesttype = (__u8)0x40; |
| 303 | value = value + (__u16)*((unsigned char *)data); |
| 304 | data = NULL; |
| 305 | pipe = usb_sndctrlpipe(serial->dev, 0); |
| 306 | } else { |
| 307 | request = (__u8)MOS_READ; |
| 308 | requesttype = (__u8)0xC0; |
| 309 | size = 0x01; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 310 | pipe = usb_rcvctrlpipe(serial->dev, 0); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | status = usb_control_msg(serial->dev, pipe, request, requesttype, |
| 314 | value, index, data, size, MOS_WDR_TIMEOUT); |
| 315 | |
| 316 | if (status < 0) |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 317 | dbg("Command Write failed Value %x index %x\n", value, index); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 318 | |
| 319 | return status; |
| 320 | } |
| 321 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 322 | static int mos7720_open(struct tty_struct *tty, |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 323 | struct usb_serial_port *port, struct file *filp) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 324 | { |
| 325 | struct usb_serial *serial; |
| 326 | struct usb_serial_port *port0; |
| 327 | struct urb *urb; |
| 328 | struct moschip_serial *mos7720_serial; |
| 329 | struct moschip_port *mos7720_port; |
| 330 | int response; |
| 331 | int port_number; |
| 332 | char data; |
Oliver Neukum | fe4b65e | 2007-03-14 15:22:25 +0100 | [diff] [blame] | 333 | int allocated_urbs = 0; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 334 | int j; |
| 335 | |
| 336 | serial = port->serial; |
| 337 | |
| 338 | mos7720_port = usb_get_serial_port_data(port); |
| 339 | if (mos7720_port == NULL) |
| 340 | return -ENODEV; |
| 341 | |
| 342 | port0 = serial->port[0]; |
| 343 | |
| 344 | mos7720_serial = usb_get_serial_data(serial); |
| 345 | |
| 346 | if (mos7720_serial == NULL || port0 == NULL) |
| 347 | return -ENODEV; |
| 348 | |
| 349 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
| 350 | usb_clear_halt(serial->dev, port->read_urb->pipe); |
| 351 | |
| 352 | /* Initialising the write urb pool */ |
| 353 | for (j = 0; j < NUM_URBS; ++j) { |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 354 | urb = usb_alloc_urb(0, GFP_KERNEL); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 355 | mos7720_port->write_urb_pool[j] = urb; |
| 356 | |
| 357 | if (urb == NULL) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 358 | dev_err(&port->dev, "No more urbs???\n"); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 359 | continue; |
| 360 | } |
| 361 | |
| 362 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
| 363 | GFP_KERNEL); |
| 364 | if (!urb->transfer_buffer) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 365 | dev_err(&port->dev, |
| 366 | "%s-out of memory for urb buffers.\n", |
| 367 | __func__); |
Oliver Neukum | fe4b65e | 2007-03-14 15:22:25 +0100 | [diff] [blame] | 368 | usb_free_urb(mos7720_port->write_urb_pool[j]); |
| 369 | mos7720_port->write_urb_pool[j] = NULL; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 370 | continue; |
| 371 | } |
Oliver Neukum | fe4b65e | 2007-03-14 15:22:25 +0100 | [diff] [blame] | 372 | allocated_urbs++; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 373 | } |
| 374 | |
Oliver Neukum | fe4b65e | 2007-03-14 15:22:25 +0100 | [diff] [blame] | 375 | if (!allocated_urbs) |
| 376 | return -ENOMEM; |
| 377 | |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 378 | /* Initialize MCS7720 -- Write Init values to corresponding Registers |
| 379 | * |
| 380 | * Register Index |
| 381 | * 1 : IER |
| 382 | * 2 : FCR |
| 383 | * 3 : LCR |
| 384 | * 4 : MCR |
| 385 | * |
| 386 | * 0x08 : SP1/2 Control Reg |
| 387 | */ |
| 388 | port_number = port->number - port->serial->minor; |
| 389 | send_mos_cmd(port->serial, MOS_READ, port_number, UART_LSR, &data); |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 390 | dbg("SS::%p LSR:%x\n", mos7720_port, data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 391 | |
| 392 | dbg("Check:Sending Command .........."); |
| 393 | |
| 394 | data = 0x02; |
| 395 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x01, &data); |
| 396 | data = 0x02; |
| 397 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x02, &data); |
| 398 | |
| 399 | data = 0x00; |
| 400 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
| 401 | data = 0x00; |
| 402 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); |
| 403 | |
| 404 | data = 0xCF; |
| 405 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); |
| 406 | data = 0x03; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 407 | mos7720_port->shadowLCR = data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 408 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
| 409 | data = 0x0b; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 410 | mos7720_port->shadowMCR = data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 411 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
| 412 | data = 0x0b; |
| 413 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
| 414 | |
| 415 | data = 0x00; |
| 416 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); |
| 417 | data = 0x00; |
| 418 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); |
| 419 | |
| 420 | /* data = 0x00; |
| 421 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, port_number + 1, &data); |
| 422 | data = 0x03; |
| 423 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); |
| 424 | data = 0x00; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 425 | send_mos_cmd(port->serial, MOS_WRITE, MOS_MAX_PORT, |
| 426 | port_number + 1, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 427 | */ |
| 428 | data = 0x00; |
| 429 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); |
| 430 | |
| 431 | data = data | (port->number - port->serial->minor + 1); |
| 432 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); |
| 433 | |
| 434 | data = 0x83; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 435 | mos7720_port->shadowLCR = data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 436 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
| 437 | data = 0x0c; |
| 438 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); |
| 439 | data = 0x00; |
| 440 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
| 441 | data = 0x03; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 442 | mos7720_port->shadowLCR = data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 443 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
| 444 | data = 0x0c; |
| 445 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
| 446 | data = 0x0c; |
| 447 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
| 448 | |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 449 | /* see if we've set up our endpoint info yet * |
| 450 | * (can't set it up in mos7720_startup as the * |
| 451 | * structures were not set up at that time.) */ |
| 452 | if (!mos7720_serial->interrupt_started) { |
| 453 | dbg("Interrupt buffer NULL !!!"); |
| 454 | |
| 455 | /* not set up yet, so do it now */ |
| 456 | mos7720_serial->interrupt_started = 1; |
| 457 | |
| 458 | dbg("To Submit URB !!!"); |
| 459 | |
| 460 | /* set up our interrupt urb */ |
| 461 | usb_fill_int_urb(port0->interrupt_in_urb, serial->dev, |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 462 | usb_rcvintpipe(serial->dev, |
| 463 | port->interrupt_in_endpointAddress), |
| 464 | port0->interrupt_in_buffer, |
| 465 | port0->interrupt_in_urb->transfer_buffer_length, |
| 466 | mos7720_interrupt_callback, mos7720_port, |
| 467 | port0->interrupt_in_urb->interval); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 468 | |
| 469 | /* start interrupt read for this mos7720 this interrupt * |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 470 | * will continue as long as the mos7720 is connected */ |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 471 | dbg("Submit URB over !!!"); |
| 472 | response = usb_submit_urb(port0->interrupt_in_urb, GFP_KERNEL); |
| 473 | if (response) |
| 474 | dev_err(&port->dev, |
Joe Perches | 898eb71 | 2007-10-18 03:06:30 -0700 | [diff] [blame] | 475 | "%s - Error %d submitting control urb\n", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 476 | __func__, response); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | /* set up our bulk in urb */ |
| 480 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
| 481 | usb_rcvbulkpipe(serial->dev, |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 482 | port->bulk_in_endpointAddress), |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 483 | port->bulk_in_buffer, |
| 484 | port->read_urb->transfer_buffer_length, |
| 485 | mos7720_bulk_in_callback, mos7720_port); |
| 486 | response = usb_submit_urb(port->read_urb, GFP_KERNEL); |
| 487 | if (response) |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 488 | dev_err(&port->dev, "%s - Error %d submitting read urb\n", |
| 489 | __func__, response); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 490 | |
| 491 | /* initialize our icount structure */ |
| 492 | memset(&(mos7720_port->icount), 0x00, sizeof(mos7720_port->icount)); |
| 493 | |
| 494 | /* initialize our port settings */ |
| 495 | mos7720_port->shadowMCR = UART_MCR_OUT2; /* Must set to enable ints! */ |
| 496 | |
| 497 | /* send a open port command */ |
| 498 | mos7720_port->open = 1; |
| 499 | |
| 500 | return 0; |
| 501 | } |
| 502 | |
| 503 | /* |
| 504 | * mos7720_chars_in_buffer |
| 505 | * this function is called by the tty driver when it wants to know how many |
| 506 | * bytes of data we currently have outstanding in the port (data that has |
| 507 | * been written, but hasn't made it out the port yet) |
| 508 | * If successful, we return the number of bytes left to be written in the |
| 509 | * system, |
| 510 | * Otherwise we return a negative error number. |
| 511 | */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 512 | static int mos7720_chars_in_buffer(struct tty_struct *tty) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 513 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 514 | struct usb_serial_port *port = tty->driver_data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 515 | int i; |
| 516 | int chars = 0; |
| 517 | struct moschip_port *mos7720_port; |
| 518 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 519 | dbg("%s:entering ...........", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 520 | |
| 521 | mos7720_port = usb_get_serial_port_data(port); |
| 522 | if (mos7720_port == NULL) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 523 | dbg("%s:leaving ...........", __func__); |
Alan Cox | 23198fd | 2009-07-20 16:05:27 +0100 | [diff] [blame] | 524 | return 0; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 525 | } |
| 526 | |
| 527 | for (i = 0; i < NUM_URBS; ++i) { |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 528 | if (mos7720_port->write_urb_pool[i] && |
| 529 | mos7720_port->write_urb_pool[i]->status == -EINPROGRESS) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 530 | chars += URB_TRANSFER_BUFFER_SIZE; |
| 531 | } |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 532 | dbg("%s - returns %d", __func__, chars); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 533 | return chars; |
| 534 | } |
| 535 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 536 | static void mos7720_close(struct usb_serial_port *port) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 537 | { |
| 538 | struct usb_serial *serial; |
| 539 | struct moschip_port *mos7720_port; |
| 540 | char data; |
| 541 | int j; |
| 542 | |
| 543 | dbg("mos7720_close:entering..."); |
| 544 | |
| 545 | serial = port->serial; |
| 546 | |
| 547 | mos7720_port = usb_get_serial_port_data(port); |
| 548 | if (mos7720_port == NULL) |
| 549 | return; |
| 550 | |
| 551 | for (j = 0; j < NUM_URBS; ++j) |
| 552 | usb_kill_urb(mos7720_port->write_urb_pool[j]); |
| 553 | |
| 554 | /* Freeing Write URBs */ |
| 555 | for (j = 0; j < NUM_URBS; ++j) { |
| 556 | if (mos7720_port->write_urb_pool[j]) { |
| 557 | kfree(mos7720_port->write_urb_pool[j]->transfer_buffer); |
| 558 | usb_free_urb(mos7720_port->write_urb_pool[j]); |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | /* While closing port, shutdown all bulk read, write * |
Oliver Neukum | a1cd7e9 | 2008-01-16 17:18:52 +0100 | [diff] [blame] | 563 | * and interrupt read if they exists, otherwise nop */ |
| 564 | dbg("Shutdown bulk write"); |
| 565 | usb_kill_urb(port->write_urb); |
| 566 | dbg("Shutdown bulk read"); |
| 567 | usb_kill_urb(port->read_urb); |
| 568 | |
| 569 | mutex_lock(&serial->disc_mutex); |
| 570 | /* these commands must not be issued if the device has |
| 571 | * been disconnected */ |
| 572 | if (!serial->disconnected) { |
| 573 | data = 0x00; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 574 | send_mos_cmd(serial, MOS_WRITE, |
| 575 | port->number - port->serial->minor, 0x04, &data); |
Oliver Neukum | a1cd7e9 | 2008-01-16 17:18:52 +0100 | [diff] [blame] | 576 | |
| 577 | data = 0x00; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 578 | send_mos_cmd(serial, MOS_WRITE, |
| 579 | port->number - port->serial->minor, 0x01, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 580 | } |
Oliver Neukum | a1cd7e9 | 2008-01-16 17:18:52 +0100 | [diff] [blame] | 581 | mutex_unlock(&serial->disc_mutex); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 582 | mos7720_port->open = 0; |
| 583 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 584 | dbg("Leaving %s", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 585 | } |
| 586 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 587 | static void mos7720_break(struct tty_struct *tty, int break_state) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 588 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 589 | struct usb_serial_port *port = tty->driver_data; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 590 | unsigned char data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 591 | struct usb_serial *serial; |
| 592 | struct moschip_port *mos7720_port; |
| 593 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 594 | dbg("Entering %s", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 595 | |
| 596 | serial = port->serial; |
| 597 | |
| 598 | mos7720_port = usb_get_serial_port_data(port); |
| 599 | if (mos7720_port == NULL) |
| 600 | return; |
| 601 | |
| 602 | if (break_state == -1) |
| 603 | data = mos7720_port->shadowLCR | UART_LCR_SBC; |
| 604 | else |
| 605 | data = mos7720_port->shadowLCR & ~UART_LCR_SBC; |
| 606 | |
| 607 | mos7720_port->shadowLCR = data; |
| 608 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, |
| 609 | 0x03, &data); |
| 610 | |
| 611 | return; |
| 612 | } |
| 613 | |
| 614 | /* |
| 615 | * mos7720_write_room |
| 616 | * this function is called by the tty driver when it wants to know how many |
| 617 | * bytes of data we can accept for a specific port. |
| 618 | * If successful, we return the amount of room that we have for this port |
| 619 | * Otherwise we return a negative error number. |
| 620 | */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 621 | static int mos7720_write_room(struct tty_struct *tty) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 622 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 623 | struct usb_serial_port *port = tty->driver_data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 624 | struct moschip_port *mos7720_port; |
| 625 | int room = 0; |
| 626 | int i; |
| 627 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 628 | dbg("%s:entering ...........", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 629 | |
| 630 | mos7720_port = usb_get_serial_port_data(port); |
| 631 | if (mos7720_port == NULL) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 632 | dbg("%s:leaving ...........", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 633 | return -ENODEV; |
| 634 | } |
| 635 | |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 636 | /* FIXME: Locking */ |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 637 | for (i = 0; i < NUM_URBS; ++i) { |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 638 | if (mos7720_port->write_urb_pool[i] && |
| 639 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 640 | room += URB_TRANSFER_BUFFER_SIZE; |
| 641 | } |
| 642 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 643 | dbg("%s - returns %d", __func__, room); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 644 | return room; |
| 645 | } |
| 646 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 647 | static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port, |
| 648 | const unsigned char *data, int count) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 649 | { |
| 650 | int status; |
| 651 | int i; |
| 652 | int bytes_sent = 0; |
| 653 | int transfer_size; |
| 654 | |
| 655 | struct moschip_port *mos7720_port; |
| 656 | struct usb_serial *serial; |
| 657 | struct urb *urb; |
| 658 | const unsigned char *current_position = data; |
| 659 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 660 | dbg("%s:entering ...........", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 661 | |
| 662 | serial = port->serial; |
| 663 | |
| 664 | mos7720_port = usb_get_serial_port_data(port); |
| 665 | if (mos7720_port == NULL) { |
| 666 | dbg("mos7720_port is NULL"); |
| 667 | return -ENODEV; |
| 668 | } |
| 669 | |
| 670 | /* try to find a free urb in the list */ |
| 671 | urb = NULL; |
| 672 | |
| 673 | for (i = 0; i < NUM_URBS; ++i) { |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 674 | if (mos7720_port->write_urb_pool[i] && |
| 675 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) { |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 676 | urb = mos7720_port->write_urb_pool[i]; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 677 | dbg("URB:%d", i); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 678 | break; |
| 679 | } |
| 680 | } |
| 681 | |
| 682 | if (urb == NULL) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 683 | dbg("%s - no more free urbs", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 684 | goto exit; |
| 685 | } |
| 686 | |
| 687 | if (urb->transfer_buffer == NULL) { |
| 688 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
| 689 | GFP_KERNEL); |
| 690 | if (urb->transfer_buffer == NULL) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 691 | dev_err(&port->dev, "%s no more kernel memory...\n", |
| 692 | __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 693 | goto exit; |
| 694 | } |
| 695 | } |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 696 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 697 | |
| 698 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 699 | usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 700 | urb->transfer_buffer); |
| 701 | |
| 702 | /* fill urb with data and submit */ |
| 703 | usb_fill_bulk_urb(urb, serial->dev, |
| 704 | usb_sndbulkpipe(serial->dev, |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 705 | port->bulk_out_endpointAddress), |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 706 | urb->transfer_buffer, transfer_size, |
| 707 | mos7720_bulk_out_data_callback, mos7720_port); |
| 708 | |
| 709 | /* send it down the pipe */ |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 710 | status = usb_submit_urb(urb, GFP_ATOMIC); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 711 | if (status) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 712 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " |
| 713 | "with status = %d\n", __func__, status); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 714 | bytes_sent = status; |
| 715 | goto exit; |
| 716 | } |
| 717 | bytes_sent = transfer_size; |
| 718 | |
| 719 | exit: |
| 720 | return bytes_sent; |
| 721 | } |
| 722 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 723 | static void mos7720_throttle(struct tty_struct *tty) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 724 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 725 | struct usb_serial_port *port = tty->driver_data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 726 | struct moschip_port *mos7720_port; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 727 | int status; |
| 728 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 729 | dbg("%s- port %d\n", __func__, port->number); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 730 | |
| 731 | mos7720_port = usb_get_serial_port_data(port); |
| 732 | |
| 733 | if (mos7720_port == NULL) |
| 734 | return; |
| 735 | |
| 736 | if (!mos7720_port->open) { |
| 737 | dbg("port not opened"); |
| 738 | return; |
| 739 | } |
| 740 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 741 | dbg("%s: Entering ..........", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 742 | |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 743 | /* if we are implementing XON/XOFF, send the stop character */ |
| 744 | if (I_IXOFF(tty)) { |
| 745 | unsigned char stop_char = STOP_CHAR(tty); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 746 | status = mos7720_write(tty, port, &stop_char, 1); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 747 | if (status <= 0) |
| 748 | return; |
| 749 | } |
| 750 | |
| 751 | /* if we are implementing RTS/CTS, toggle that line */ |
| 752 | if (tty->termios->c_cflag & CRTSCTS) { |
| 753 | mos7720_port->shadowMCR &= ~UART_MCR_RTS; |
| 754 | status = send_mos_cmd(port->serial, MOS_WRITE, |
| 755 | port->number - port->serial->minor, |
| 756 | UART_MCR, &mos7720_port->shadowMCR); |
| 757 | if (status != 0) |
| 758 | return; |
| 759 | } |
| 760 | } |
| 761 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 762 | static void mos7720_unthrottle(struct tty_struct *tty) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 763 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 764 | struct usb_serial_port *port = tty->driver_data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 765 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 766 | int status; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 767 | |
| 768 | if (mos7720_port == NULL) |
| 769 | return; |
| 770 | |
| 771 | if (!mos7720_port->open) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 772 | dbg("%s - port not opened", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 773 | return; |
| 774 | } |
| 775 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 776 | dbg("%s: Entering ..........", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 777 | |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 778 | /* if we are implementing XON/XOFF, send the start character */ |
| 779 | if (I_IXOFF(tty)) { |
| 780 | unsigned char start_char = START_CHAR(tty); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 781 | status = mos7720_write(tty, port, &start_char, 1); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 782 | if (status <= 0) |
| 783 | return; |
| 784 | } |
| 785 | |
| 786 | /* if we are implementing RTS/CTS, toggle that line */ |
| 787 | if (tty->termios->c_cflag & CRTSCTS) { |
| 788 | mos7720_port->shadowMCR |= UART_MCR_RTS; |
| 789 | status = send_mos_cmd(port->serial, MOS_WRITE, |
| 790 | port->number - port->serial->minor, |
| 791 | UART_MCR, &mos7720_port->shadowMCR); |
| 792 | if (status != 0) |
| 793 | return; |
| 794 | } |
| 795 | } |
| 796 | |
| 797 | static int set_higher_rates(struct moschip_port *mos7720_port, |
| 798 | unsigned int baud) |
| 799 | { |
| 800 | unsigned char data; |
| 801 | struct usb_serial_port *port; |
| 802 | struct usb_serial *serial; |
| 803 | int port_number; |
| 804 | |
| 805 | if (mos7720_port == NULL) |
| 806 | return -EINVAL; |
| 807 | |
| 808 | port = mos7720_port->port; |
| 809 | serial = port->serial; |
| 810 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 811 | /*********************************************** |
| 812 | * Init Sequence for higher rates |
| 813 | ***********************************************/ |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 814 | dbg("Sending Setting Commands .........."); |
| 815 | port_number = port->number - port->serial->minor; |
| 816 | |
| 817 | data = 0x000; |
| 818 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
| 819 | data = 0x000; |
| 820 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); |
| 821 | data = 0x0CF; |
| 822 | send_mos_cmd(serial, MOS_WRITE, port->number, 0x02, &data); |
| 823 | data = 0x00b; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 824 | mos7720_port->shadowMCR = data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 825 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
| 826 | data = 0x00b; |
| 827 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
| 828 | |
| 829 | data = 0x000; |
| 830 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); |
| 831 | data = 0x000; |
| 832 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); |
| 833 | |
| 834 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 835 | /*********************************************** |
| 836 | * Set for higher rates * |
| 837 | ***********************************************/ |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 838 | |
| 839 | data = baud * 0x10; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 840 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 841 | |
| 842 | data = 0x003; |
| 843 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); |
| 844 | data = 0x003; |
| 845 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); |
| 846 | |
| 847 | data = 0x02b; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 848 | mos7720_port->shadowMCR = data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 849 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
| 850 | data = 0x02b; |
| 851 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
| 852 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 853 | /*********************************************** |
| 854 | * Set DLL/DLM |
| 855 | ***********************************************/ |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 856 | |
| 857 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 858 | mos7720_port->shadowLCR = data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 859 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
| 860 | |
| 861 | data = 0x001; /* DLL */ |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 862 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 863 | data = 0x000; /* DLM */ |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 864 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 865 | |
| 866 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 867 | mos7720_port->shadowLCR = data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 868 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
| 869 | |
| 870 | return 0; |
| 871 | } |
| 872 | |
| 873 | /* baud rate information */ |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 874 | struct divisor_table_entry { |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 875 | __u32 baudrate; |
| 876 | __u16 divisor; |
| 877 | }; |
| 878 | |
| 879 | /* Define table of divisors for moschip 7720 hardware * |
| 880 | * These assume a 3.6864MHz crystal, the standard /16, and * |
| 881 | * MCR.7 = 0. */ |
| 882 | static struct divisor_table_entry divisor_table[] = { |
| 883 | { 50, 2304}, |
| 884 | { 110, 1047}, /* 2094.545455 => 230450 => .0217 % over */ |
| 885 | { 134, 857}, /* 1713.011152 => 230398.5 => .00065% under */ |
| 886 | { 150, 768}, |
| 887 | { 300, 384}, |
| 888 | { 600, 192}, |
| 889 | { 1200, 96}, |
| 890 | { 1800, 64}, |
| 891 | { 2400, 48}, |
| 892 | { 4800, 24}, |
| 893 | { 7200, 16}, |
| 894 | { 9600, 12}, |
| 895 | { 19200, 6}, |
| 896 | { 38400, 3}, |
| 897 | { 57600, 2}, |
| 898 | { 115200, 1}, |
| 899 | }; |
| 900 | |
| 901 | /***************************************************************************** |
| 902 | * calc_baud_rate_divisor |
| 903 | * this function calculates the proper baud rate divisor for the specified |
| 904 | * baud rate. |
| 905 | *****************************************************************************/ |
| 906 | static int calc_baud_rate_divisor(int baudrate, int *divisor) |
| 907 | { |
| 908 | int i; |
| 909 | __u16 custom; |
| 910 | __u16 round1; |
| 911 | __u16 round; |
| 912 | |
| 913 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 914 | dbg("%s - %d", __func__, baudrate); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 915 | |
| 916 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
| 917 | if (divisor_table[i].baudrate == baudrate) { |
| 918 | *divisor = divisor_table[i].divisor; |
| 919 | return 0; |
| 920 | } |
| 921 | } |
| 922 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 923 | /* After trying for all the standard baud rates * |
| 924 | * Try calculating the divisor for this baud rate */ |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 925 | if (baudrate > 75 && baudrate < 230400) { |
| 926 | /* get the divisor */ |
| 927 | custom = (__u16)(230400L / baudrate); |
| 928 | |
| 929 | /* Check for round off */ |
| 930 | round1 = (__u16)(2304000L / baudrate); |
| 931 | round = (__u16)(round1 - (custom * 10)); |
| 932 | if (round > 4) |
| 933 | custom++; |
| 934 | *divisor = custom; |
| 935 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 936 | dbg("Baud %d = %d", baudrate, custom); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 937 | return 0; |
| 938 | } |
| 939 | |
| 940 | dbg("Baud calculation Failed..."); |
| 941 | return -EINVAL; |
| 942 | } |
| 943 | |
| 944 | /* |
| 945 | * send_cmd_write_baud_rate |
| 946 | * this function sends the proper command to change the baud rate of the |
| 947 | * specified port. |
| 948 | */ |
| 949 | static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port, |
| 950 | int baudrate) |
| 951 | { |
| 952 | struct usb_serial_port *port; |
| 953 | struct usb_serial *serial; |
| 954 | int divisor; |
| 955 | int status; |
| 956 | unsigned char data; |
| 957 | unsigned char number; |
| 958 | |
| 959 | if (mos7720_port == NULL) |
| 960 | return -1; |
| 961 | |
| 962 | port = mos7720_port->port; |
| 963 | serial = port->serial; |
| 964 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 965 | dbg("%s: Entering ..........", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 966 | |
| 967 | number = port->number - port->serial->minor; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 968 | dbg("%s - port = %d, baud = %d", __func__, port->number, baudrate); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 969 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 970 | /* Calculate the Divisor */ |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 971 | status = calc_baud_rate_divisor(baudrate, &divisor); |
| 972 | if (status) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 973 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 974 | return status; |
| 975 | } |
| 976 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 977 | /* Enable access to divisor latch */ |
| 978 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; |
| 979 | mos7720_port->shadowLCR = data; |
| 980 | send_mos_cmd(serial, MOS_WRITE, number, UART_LCR, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 981 | |
| 982 | /* Write the divisor */ |
| 983 | data = ((unsigned char)(divisor & 0xff)); |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 984 | send_mos_cmd(serial, MOS_WRITE, number, 0x00, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 985 | |
| 986 | data = ((unsigned char)((divisor & 0xff00) >> 8)); |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 987 | send_mos_cmd(serial, MOS_WRITE, number, 0x01, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 988 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 989 | /* Disable access to divisor latch */ |
| 990 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; |
| 991 | mos7720_port->shadowLCR = data; |
| 992 | send_mos_cmd(serial, MOS_WRITE, number, 0x03, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 993 | |
| 994 | return status; |
| 995 | } |
| 996 | |
| 997 | /* |
| 998 | * change_port_settings |
| 999 | * This routine is called to set the UART on the device to match |
| 1000 | * the specified new settings. |
| 1001 | */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1002 | static void change_port_settings(struct tty_struct *tty, |
| 1003 | struct moschip_port *mos7720_port, |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 1004 | struct ktermios *old_termios) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1005 | { |
| 1006 | struct usb_serial_port *port; |
| 1007 | struct usb_serial *serial; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1008 | int baud; |
| 1009 | unsigned cflag; |
| 1010 | unsigned iflag; |
| 1011 | __u8 mask = 0xff; |
| 1012 | __u8 lData; |
| 1013 | __u8 lParity; |
| 1014 | __u8 lStop; |
| 1015 | int status; |
| 1016 | int port_number; |
| 1017 | char data; |
| 1018 | |
| 1019 | if (mos7720_port == NULL) |
| 1020 | return ; |
| 1021 | |
| 1022 | port = mos7720_port->port; |
| 1023 | serial = port->serial; |
| 1024 | port_number = port->number - port->serial->minor; |
| 1025 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1026 | dbg("%s - port %d", __func__, port->number); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1027 | |
| 1028 | if (!mos7720_port->open) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1029 | dbg("%s - port not opened", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1030 | return; |
| 1031 | } |
| 1032 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1033 | dbg("%s: Entering ..........", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1034 | |
| 1035 | lData = UART_LCR_WLEN8; |
| 1036 | lStop = 0x00; /* 1 stop bit */ |
| 1037 | lParity = 0x00; /* No parity */ |
| 1038 | |
| 1039 | cflag = tty->termios->c_cflag; |
| 1040 | iflag = tty->termios->c_iflag; |
| 1041 | |
| 1042 | /* Change the number of bits */ |
| 1043 | switch (cflag & CSIZE) { |
| 1044 | case CS5: |
| 1045 | lData = UART_LCR_WLEN5; |
| 1046 | mask = 0x1f; |
| 1047 | break; |
| 1048 | |
| 1049 | case CS6: |
| 1050 | lData = UART_LCR_WLEN6; |
| 1051 | mask = 0x3f; |
| 1052 | break; |
| 1053 | |
| 1054 | case CS7: |
| 1055 | lData = UART_LCR_WLEN7; |
| 1056 | mask = 0x7f; |
| 1057 | break; |
| 1058 | default: |
| 1059 | case CS8: |
| 1060 | lData = UART_LCR_WLEN8; |
| 1061 | break; |
| 1062 | } |
| 1063 | |
| 1064 | /* Change the Parity bit */ |
| 1065 | if (cflag & PARENB) { |
| 1066 | if (cflag & PARODD) { |
| 1067 | lParity = UART_LCR_PARITY; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1068 | dbg("%s - parity = odd", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1069 | } else { |
| 1070 | lParity = (UART_LCR_EPAR | UART_LCR_PARITY); |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1071 | dbg("%s - parity = even", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1072 | } |
| 1073 | |
| 1074 | } else { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1075 | dbg("%s - parity = none", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1076 | } |
| 1077 | |
| 1078 | if (cflag & CMSPAR) |
| 1079 | lParity = lParity | 0x20; |
| 1080 | |
| 1081 | /* Change the Stop bit */ |
| 1082 | if (cflag & CSTOPB) { |
| 1083 | lStop = UART_LCR_STOP; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1084 | dbg("%s - stop bits = 2", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1085 | } else { |
| 1086 | lStop = 0x00; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1087 | dbg("%s - stop bits = 1", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1088 | } |
| 1089 | |
| 1090 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ |
| 1091 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ |
| 1092 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ |
| 1093 | |
| 1094 | /* Update the LCR with the correct value */ |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1095 | mos7720_port->shadowLCR &= |
| 1096 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1097 | mos7720_port->shadowLCR |= (lData | lParity | lStop); |
| 1098 | |
| 1099 | |
| 1100 | /* Disable Interrupts */ |
| 1101 | data = 0x00; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1102 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, |
| 1103 | UART_IER, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1104 | |
| 1105 | data = 0x00; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1106 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1107 | |
| 1108 | data = 0xcf; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1109 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1110 | |
| 1111 | /* Send the updated LCR value to the mos7720 */ |
| 1112 | data = mos7720_port->shadowLCR; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1113 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_LCR, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1114 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1115 | data = 0x00b; |
| 1116 | mos7720_port->shadowMCR = data; |
| 1117 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
| 1118 | data = 0x00b; |
| 1119 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1120 | |
| 1121 | /* set up the MCR register and send it to the mos7720 */ |
| 1122 | mos7720_port->shadowMCR = UART_MCR_OUT2; |
| 1123 | if (cflag & CBAUD) |
| 1124 | mos7720_port->shadowMCR |= (UART_MCR_DTR | UART_MCR_RTS); |
| 1125 | |
| 1126 | if (cflag & CRTSCTS) { |
| 1127 | mos7720_port->shadowMCR |= (UART_MCR_XONANY); |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1128 | /* To set hardware flow control to the specified * |
| 1129 | * serial port, in SP1/2_CONTROL_REG */ |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1130 | if (port->number) { |
| 1131 | data = 0x001; |
| 1132 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, |
| 1133 | 0x08, &data); |
| 1134 | } else { |
| 1135 | data = 0x002; |
| 1136 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, |
| 1137 | 0x08, &data); |
| 1138 | } |
| 1139 | } else { |
| 1140 | mos7720_port->shadowMCR &= ~(UART_MCR_XONANY); |
| 1141 | } |
| 1142 | |
| 1143 | data = mos7720_port->shadowMCR; |
| 1144 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_MCR, &data); |
| 1145 | |
| 1146 | /* Determine divisor based on baud rate */ |
| 1147 | baud = tty_get_baud_rate(tty); |
| 1148 | if (!baud) { |
| 1149 | /* pick a default, any default... */ |
| 1150 | dbg("Picked default baud..."); |
| 1151 | baud = 9600; |
| 1152 | } |
| 1153 | |
| 1154 | if (baud >= 230400) { |
| 1155 | set_higher_rates(mos7720_port, baud); |
| 1156 | /* Enable Interrupts */ |
| 1157 | data = 0x0c; |
| 1158 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); |
| 1159 | return; |
| 1160 | } |
| 1161 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1162 | dbg("%s - baud rate = %d", __func__, baud); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1163 | status = send_cmd_write_baud_rate(mos7720_port, baud); |
Alan Cox | 65d063a | 2008-01-03 17:01:18 +0000 | [diff] [blame] | 1164 | /* FIXME: needs to write actual resulting baud back not just |
| 1165 | blindly do so */ |
| 1166 | if (cflag & CBAUD) |
| 1167 | tty_encode_baud_rate(tty, baud, baud); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1168 | /* Enable Interrupts */ |
| 1169 | data = 0x0c; |
| 1170 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); |
| 1171 | |
| 1172 | if (port->read_urb->status != -EINPROGRESS) { |
| 1173 | port->read_urb->dev = serial->dev; |
| 1174 | |
| 1175 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
| 1176 | if (status) |
| 1177 | dbg("usb_submit_urb(read bulk) failed, status = %d", |
| 1178 | status); |
| 1179 | } |
| 1180 | return; |
| 1181 | } |
| 1182 | |
| 1183 | /* |
| 1184 | * mos7720_set_termios |
| 1185 | * this function is called by the tty driver when it wants to change the |
| 1186 | * termios structure. |
| 1187 | */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1188 | static void mos7720_set_termios(struct tty_struct *tty, |
| 1189 | struct usb_serial_port *port, struct ktermios *old_termios) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1190 | { |
| 1191 | int status; |
| 1192 | unsigned int cflag; |
| 1193 | struct usb_serial *serial; |
| 1194 | struct moschip_port *mos7720_port; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1195 | |
| 1196 | serial = port->serial; |
| 1197 | |
| 1198 | mos7720_port = usb_get_serial_port_data(port); |
| 1199 | |
| 1200 | if (mos7720_port == NULL) |
| 1201 | return; |
| 1202 | |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1203 | if (!mos7720_port->open) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1204 | dbg("%s - port not opened", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1205 | return; |
| 1206 | } |
| 1207 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1208 | dbg("%s\n", "setting termios - ASPIRE"); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1209 | |
| 1210 | cflag = tty->termios->c_cflag; |
| 1211 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1212 | dbg("%s - cflag %08x iflag %08x", __func__, |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1213 | tty->termios->c_cflag, |
| 1214 | RELEVANT_IFLAG(tty->termios->c_iflag)); |
| 1215 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1216 | dbg("%s - old cflag %08x old iflag %08x", __func__, |
Alan Cox | 65d063a | 2008-01-03 17:01:18 +0000 | [diff] [blame] | 1217 | old_termios->c_cflag, |
| 1218 | RELEVANT_IFLAG(old_termios->c_iflag)); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1219 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1220 | dbg("%s - port %d", __func__, port->number); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1221 | |
| 1222 | /* change the port settings to the new ones specified */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1223 | change_port_settings(tty, mos7720_port, old_termios); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1224 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1225 | if (!port->read_urb) { |
| 1226 | dbg("%s", "URB KILLED !!!!!\n"); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1227 | return; |
| 1228 | } |
| 1229 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1230 | if (port->read_urb->status != -EINPROGRESS) { |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1231 | port->read_urb->dev = serial->dev; |
| 1232 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
| 1233 | if (status) |
| 1234 | dbg("usb_submit_urb(read bulk) failed, status = %d", |
| 1235 | status); |
| 1236 | } |
| 1237 | return; |
| 1238 | } |
| 1239 | |
| 1240 | /* |
| 1241 | * get_lsr_info - get line status register info |
| 1242 | * |
| 1243 | * Purpose: Let user call ioctl() to get info when the UART physically |
| 1244 | * is emptied. On bus types like RS485, the transmitter must |
| 1245 | * release the bus after transmitting. This must be done when |
| 1246 | * the transmit shift register is empty, not be done when the |
| 1247 | * transmit holding register is empty. This functionality |
| 1248 | * allows an RS485 driver to be written in user space. |
| 1249 | */ |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1250 | static int get_lsr_info(struct tty_struct *tty, |
| 1251 | struct moschip_port *mos7720_port, unsigned int __user *value) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1252 | { |
| 1253 | int count; |
| 1254 | unsigned int result = 0; |
| 1255 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1256 | count = mos7720_chars_in_buffer(tty); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1257 | if (count == 0) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1258 | dbg("%s -- Empty", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1259 | result = TIOCSER_TEMT; |
| 1260 | } |
| 1261 | |
| 1262 | if (copy_to_user(value, &result, sizeof(int))) |
| 1263 | return -EFAULT; |
| 1264 | return 0; |
| 1265 | } |
| 1266 | |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1267 | static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, |
| 1268 | unsigned int __user *value) |
| 1269 | { |
| 1270 | unsigned int mcr ; |
| 1271 | unsigned int arg; |
| 1272 | unsigned char data; |
| 1273 | |
| 1274 | struct usb_serial_port *port; |
| 1275 | |
| 1276 | if (mos7720_port == NULL) |
| 1277 | return -1; |
| 1278 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1279 | port = (struct usb_serial_port *)mos7720_port->port; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1280 | mcr = mos7720_port->shadowMCR; |
| 1281 | |
| 1282 | if (copy_from_user(&arg, value, sizeof(int))) |
| 1283 | return -EFAULT; |
| 1284 | |
| 1285 | switch (cmd) { |
| 1286 | case TIOCMBIS: |
| 1287 | if (arg & TIOCM_RTS) |
| 1288 | mcr |= UART_MCR_RTS; |
| 1289 | if (arg & TIOCM_DTR) |
| 1290 | mcr |= UART_MCR_RTS; |
| 1291 | if (arg & TIOCM_LOOP) |
| 1292 | mcr |= UART_MCR_LOOP; |
| 1293 | break; |
| 1294 | |
| 1295 | case TIOCMBIC: |
| 1296 | if (arg & TIOCM_RTS) |
| 1297 | mcr &= ~UART_MCR_RTS; |
| 1298 | if (arg & TIOCM_DTR) |
| 1299 | mcr &= ~UART_MCR_RTS; |
| 1300 | if (arg & TIOCM_LOOP) |
| 1301 | mcr &= ~UART_MCR_LOOP; |
| 1302 | break; |
| 1303 | |
| 1304 | case TIOCMSET: |
| 1305 | /* turn off the RTS and DTR and LOOPBACK |
| 1306 | * and then only turn on what was asked to */ |
| 1307 | mcr &= ~(UART_MCR_RTS | UART_MCR_DTR | UART_MCR_LOOP); |
| 1308 | mcr |= ((arg & TIOCM_RTS) ? UART_MCR_RTS : 0); |
| 1309 | mcr |= ((arg & TIOCM_DTR) ? UART_MCR_DTR : 0); |
| 1310 | mcr |= ((arg & TIOCM_LOOP) ? UART_MCR_LOOP : 0); |
| 1311 | break; |
| 1312 | } |
| 1313 | |
| 1314 | mos7720_port->shadowMCR = mcr; |
| 1315 | |
| 1316 | data = mos7720_port->shadowMCR; |
| 1317 | send_mos_cmd(port->serial, MOS_WRITE, |
| 1318 | port->number - port->serial->minor, UART_MCR, &data); |
| 1319 | |
| 1320 | return 0; |
| 1321 | } |
| 1322 | |
| 1323 | static int get_modem_info(struct moschip_port *mos7720_port, |
| 1324 | unsigned int __user *value) |
| 1325 | { |
| 1326 | unsigned int result = 0; |
| 1327 | unsigned int msr = mos7720_port->shadowMSR; |
| 1328 | unsigned int mcr = mos7720_port->shadowMCR; |
| 1329 | |
| 1330 | result = ((mcr & UART_MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ |
| 1331 | | ((mcr & UART_MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ |
| 1332 | | ((msr & UART_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ |
| 1333 | | ((msr & UART_MSR_DCD) ? TIOCM_CAR: 0) /* 0x040 */ |
| 1334 | | ((msr & UART_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ |
| 1335 | | ((msr & UART_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ |
| 1336 | |
| 1337 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1338 | dbg("%s -- %x", __func__, result); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1339 | |
| 1340 | if (copy_to_user(value, &result, sizeof(int))) |
| 1341 | return -EFAULT; |
| 1342 | return 0; |
| 1343 | } |
| 1344 | |
| 1345 | static int get_serial_info(struct moschip_port *mos7720_port, |
| 1346 | struct serial_struct __user *retinfo) |
| 1347 | { |
| 1348 | struct serial_struct tmp; |
| 1349 | |
| 1350 | if (!retinfo) |
| 1351 | return -EFAULT; |
| 1352 | |
| 1353 | memset(&tmp, 0, sizeof(tmp)); |
| 1354 | |
| 1355 | tmp.type = PORT_16550A; |
| 1356 | tmp.line = mos7720_port->port->serial->minor; |
| 1357 | tmp.port = mos7720_port->port->number; |
| 1358 | tmp.irq = 0; |
| 1359 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1360 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1361 | tmp.baud_base = 9600; |
| 1362 | tmp.close_delay = 5*HZ; |
| 1363 | tmp.closing_wait = 30*HZ; |
| 1364 | |
| 1365 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) |
| 1366 | return -EFAULT; |
| 1367 | return 0; |
| 1368 | } |
| 1369 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1370 | static int mos7720_ioctl(struct tty_struct *tty, struct file *file, |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1371 | unsigned int cmd, unsigned long arg) |
| 1372 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1373 | struct usb_serial_port *port = tty->driver_data; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1374 | struct moschip_port *mos7720_port; |
| 1375 | struct async_icount cnow; |
| 1376 | struct async_icount cprev; |
| 1377 | struct serial_icounter_struct icount; |
| 1378 | |
| 1379 | mos7720_port = usb_get_serial_port_data(port); |
| 1380 | if (mos7720_port == NULL) |
| 1381 | return -ENODEV; |
| 1382 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1383 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1384 | |
| 1385 | switch (cmd) { |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1386 | case TIOCSERGETLSR: |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1387 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1388 | return get_lsr_info(tty, mos7720_port, |
| 1389 | (unsigned int __user *)arg); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1390 | return 0; |
| 1391 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1392 | /* FIXME: These should be using the mode methods */ |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1393 | case TIOCMBIS: |
| 1394 | case TIOCMBIC: |
| 1395 | case TIOCMSET: |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1396 | dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", |
| 1397 | __func__, port->number); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1398 | return set_modem_info(mos7720_port, cmd, |
| 1399 | (unsigned int __user *)arg); |
| 1400 | |
| 1401 | case TIOCMGET: |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1402 | dbg("%s (%d) TIOCMGET", __func__, port->number); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1403 | return get_modem_info(mos7720_port, |
| 1404 | (unsigned int __user *)arg); |
| 1405 | |
| 1406 | case TIOCGSERIAL: |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1407 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1408 | return get_serial_info(mos7720_port, |
| 1409 | (struct serial_struct __user *)arg); |
| 1410 | |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1411 | case TIOCMIWAIT: |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1412 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1413 | cprev = mos7720_port->icount; |
| 1414 | while (1) { |
| 1415 | if (signal_pending(current)) |
| 1416 | return -ERESTARTSYS; |
| 1417 | cnow = mos7720_port->icount; |
| 1418 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
| 1419 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) |
| 1420 | return -EIO; /* no change => error */ |
| 1421 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
| 1422 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || |
| 1423 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1424 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1425 | return 0; |
| 1426 | } |
| 1427 | cprev = cnow; |
| 1428 | } |
| 1429 | /* NOTREACHED */ |
| 1430 | break; |
| 1431 | |
| 1432 | case TIOCGICOUNT: |
| 1433 | cnow = mos7720_port->icount; |
| 1434 | icount.cts = cnow.cts; |
| 1435 | icount.dsr = cnow.dsr; |
| 1436 | icount.rng = cnow.rng; |
| 1437 | icount.dcd = cnow.dcd; |
| 1438 | icount.rx = cnow.rx; |
| 1439 | icount.tx = cnow.tx; |
| 1440 | icount.frame = cnow.frame; |
| 1441 | icount.overrun = cnow.overrun; |
| 1442 | icount.parity = cnow.parity; |
| 1443 | icount.brk = cnow.brk; |
| 1444 | icount.buf_overrun = cnow.buf_overrun; |
| 1445 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1446 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1447 | port->number, icount.rx, icount.tx); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1448 | if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) |
| 1449 | return -EFAULT; |
| 1450 | return 0; |
| 1451 | } |
| 1452 | |
| 1453 | return -ENOIOCTLCMD; |
| 1454 | } |
| 1455 | |
| 1456 | static int mos7720_startup(struct usb_serial *serial) |
| 1457 | { |
| 1458 | struct moschip_serial *mos7720_serial; |
| 1459 | struct moschip_port *mos7720_port; |
| 1460 | struct usb_device *dev; |
| 1461 | int i; |
| 1462 | char data; |
| 1463 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1464 | dbg("%s: Entering ..........", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1465 | |
| 1466 | if (!serial) { |
| 1467 | dbg("Invalid Handler"); |
| 1468 | return -ENODEV; |
| 1469 | } |
| 1470 | |
| 1471 | dev = serial->dev; |
| 1472 | |
| 1473 | /* create our private serial structure */ |
| 1474 | mos7720_serial = kzalloc(sizeof(struct moschip_serial), GFP_KERNEL); |
| 1475 | if (mos7720_serial == NULL) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 1476 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1477 | return -ENOMEM; |
| 1478 | } |
| 1479 | |
| 1480 | usb_set_serial_data(serial, mos7720_serial); |
| 1481 | |
| 1482 | /* we set up the pointers to the endpoints in the mos7720_open * |
| 1483 | * function, as the structures aren't created yet. */ |
| 1484 | |
| 1485 | /* set up port private structures */ |
| 1486 | for (i = 0; i < serial->num_ports; ++i) { |
| 1487 | mos7720_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); |
| 1488 | if (mos7720_port == NULL) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 1489 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1490 | usb_set_serial_data(serial, NULL); |
| 1491 | kfree(mos7720_serial); |
| 1492 | return -ENOMEM; |
| 1493 | } |
| 1494 | |
| 1495 | /* Initialize all port interrupt end point to port 0 int |
| 1496 | * endpoint. Our device has only one interrupt endpoint |
| 1497 | * comman to all ports */ |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1498 | serial->port[i]->interrupt_in_endpointAddress = |
| 1499 | serial->port[0]->interrupt_in_endpointAddress; |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1500 | |
| 1501 | mos7720_port->port = serial->port[i]; |
| 1502 | usb_set_serial_port_data(serial->port[i], mos7720_port); |
| 1503 | |
| 1504 | dbg("port number is %d", serial->port[i]->number); |
| 1505 | dbg("serial number is %d", serial->minor); |
| 1506 | } |
| 1507 | |
| 1508 | |
| 1509 | /* setting configuration feature to one */ |
| 1510 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1511 | (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5*HZ); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1512 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1513 | /* LSR For Port 1 */ |
| 1514 | send_mos_cmd(serial, MOS_READ, 0x00, UART_LSR, &data); |
| 1515 | dbg("LSR:%x", data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1516 | |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1517 | /* LSR For Port 2 */ |
| 1518 | send_mos_cmd(serial, MOS_READ, 0x01, UART_LSR, &data); |
| 1519 | dbg("LSR:%x", data); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1520 | |
| 1521 | return 0; |
| 1522 | } |
| 1523 | |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 1524 | static void mos7720_release(struct usb_serial *serial) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1525 | { |
| 1526 | int i; |
| 1527 | |
| 1528 | /* free private structure allocated for serial port */ |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 1529 | for (i = 0; i < serial->num_ports; ++i) |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1530 | kfree(usb_get_serial_port_data(serial->port[i])); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1531 | |
| 1532 | /* free private structure allocated for serial device */ |
| 1533 | kfree(usb_get_serial_data(serial)); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1534 | } |
| 1535 | |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 1536 | static struct usb_driver usb_driver = { |
| 1537 | .name = "moschip7720", |
| 1538 | .probe = usb_serial_probe, |
| 1539 | .disconnect = usb_serial_disconnect, |
| 1540 | .id_table = moschip_port_id_table, |
| 1541 | .no_dynamic_id = 1, |
| 1542 | }; |
| 1543 | |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1544 | static struct usb_serial_driver moschip7720_2port_driver = { |
| 1545 | .driver = { |
| 1546 | .owner = THIS_MODULE, |
| 1547 | .name = "moschip7720", |
| 1548 | }, |
| 1549 | .description = "Moschip 2 port adapter", |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 1550 | .usb_driver = &usb_driver, |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1551 | .id_table = moschip_port_id_table, |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1552 | .num_ports = 2, |
| 1553 | .open = mos7720_open, |
| 1554 | .close = mos7720_close, |
| 1555 | .throttle = mos7720_throttle, |
| 1556 | .unthrottle = mos7720_unthrottle, |
| 1557 | .attach = mos7720_startup, |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 1558 | .release = mos7720_release, |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1559 | .ioctl = mos7720_ioctl, |
| 1560 | .set_termios = mos7720_set_termios, |
| 1561 | .write = mos7720_write, |
| 1562 | .write_room = mos7720_write_room, |
| 1563 | .chars_in_buffer = mos7720_chars_in_buffer, |
| 1564 | .break_ctl = mos7720_break, |
| 1565 | .read_bulk_callback = mos7720_bulk_in_callback, |
Oliver Neukum | e8e30c7 | 2007-03-14 11:11:08 +0100 | [diff] [blame] | 1566 | .read_int_callback = mos7720_interrupt_callback, |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1567 | }; |
| 1568 | |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1569 | static int __init moschip7720_init(void) |
| 1570 | { |
| 1571 | int retval; |
| 1572 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1573 | dbg("%s: Entering ..........", __func__); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1574 | |
| 1575 | /* Register with the usb serial */ |
| 1576 | retval = usb_serial_register(&moschip7720_2port_driver); |
| 1577 | if (retval) |
| 1578 | goto failed_port_device_register; |
| 1579 | |
Greg Kroah-Hartman | c197a8d | 2008-08-18 13:21:04 -0700 | [diff] [blame] | 1580 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
| 1581 | DRIVER_DESC "\n"); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1582 | |
| 1583 | /* Register with the usb */ |
| 1584 | retval = usb_register(&usb_driver); |
| 1585 | if (retval) |
| 1586 | goto failed_usb_register; |
| 1587 | |
| 1588 | return 0; |
| 1589 | |
| 1590 | failed_usb_register: |
| 1591 | usb_serial_deregister(&moschip7720_2port_driver); |
| 1592 | |
| 1593 | failed_port_device_register: |
| 1594 | return retval; |
| 1595 | } |
| 1596 | |
| 1597 | static void __exit moschip7720_exit(void) |
| 1598 | { |
| 1599 | usb_deregister(&usb_driver); |
| 1600 | usb_serial_deregister(&moschip7720_2port_driver); |
| 1601 | } |
| 1602 | |
| 1603 | module_init(moschip7720_init); |
| 1604 | module_exit(moschip7720_exit); |
| 1605 | |
| 1606 | /* Module information */ |
Alan Cox | 4da1a17 | 2008-07-22 11:16:21 +0100 | [diff] [blame] | 1607 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 1608 | MODULE_DESCRIPTION(DRIVER_DESC); |
Greg Kroah-Hartman | 0f64478 | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1609 | MODULE_LICENSE("GPL"); |
| 1610 | |
| 1611 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 1612 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |