Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 2 | * dscore.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
| 4 | * Copyright (c) 2004 Evgeniy Polyakov <johnpol@2ka.mipt.ru> |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 5 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/mod_devicetable.h> |
| 25 | #include <linux/usb.h> |
| 26 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 27 | #include "../w1_int.h" |
| 28 | #include "../w1.h" |
| 29 | |
| 30 | /* COMMAND TYPE CODES */ |
| 31 | #define CONTROL_CMD 0x00 |
| 32 | #define COMM_CMD 0x01 |
| 33 | #define MODE_CMD 0x02 |
| 34 | |
| 35 | /* CONTROL COMMAND CODES */ |
| 36 | #define CTL_RESET_DEVICE 0x0000 |
| 37 | #define CTL_START_EXE 0x0001 |
| 38 | #define CTL_RESUME_EXE 0x0002 |
| 39 | #define CTL_HALT_EXE_IDLE 0x0003 |
| 40 | #define CTL_HALT_EXE_DONE 0x0004 |
| 41 | #define CTL_FLUSH_COMM_CMDS 0x0007 |
| 42 | #define CTL_FLUSH_RCV_BUFFER 0x0008 |
| 43 | #define CTL_FLUSH_XMT_BUFFER 0x0009 |
| 44 | #define CTL_GET_COMM_CMDS 0x000A |
| 45 | |
| 46 | /* MODE COMMAND CODES */ |
| 47 | #define MOD_PULSE_EN 0x0000 |
| 48 | #define MOD_SPEED_CHANGE_EN 0x0001 |
| 49 | #define MOD_1WIRE_SPEED 0x0002 |
| 50 | #define MOD_STRONG_PU_DURATION 0x0003 |
| 51 | #define MOD_PULLDOWN_SLEWRATE 0x0004 |
| 52 | #define MOD_PROG_PULSE_DURATION 0x0005 |
| 53 | #define MOD_WRITE1_LOWTIME 0x0006 |
| 54 | #define MOD_DSOW0_TREC 0x0007 |
| 55 | |
| 56 | /* COMMUNICATION COMMAND CODES */ |
| 57 | #define COMM_ERROR_ESCAPE 0x0601 |
| 58 | #define COMM_SET_DURATION 0x0012 |
| 59 | #define COMM_BIT_IO 0x0020 |
| 60 | #define COMM_PULSE 0x0030 |
| 61 | #define COMM_1_WIRE_RESET 0x0042 |
| 62 | #define COMM_BYTE_IO 0x0052 |
| 63 | #define COMM_MATCH_ACCESS 0x0064 |
| 64 | #define COMM_BLOCK_IO 0x0074 |
| 65 | #define COMM_READ_STRAIGHT 0x0080 |
| 66 | #define COMM_DO_RELEASE 0x6092 |
| 67 | #define COMM_SET_PATH 0x00A2 |
| 68 | #define COMM_WRITE_SRAM_PAGE 0x00B2 |
| 69 | #define COMM_WRITE_EPROM 0x00C4 |
| 70 | #define COMM_READ_CRC_PROT_PAGE 0x00D4 |
| 71 | #define COMM_READ_REDIRECT_PAGE_CRC 0x21E4 |
| 72 | #define COMM_SEARCH_ACCESS 0x00F4 |
| 73 | |
| 74 | /* Communication command bits */ |
| 75 | #define COMM_TYPE 0x0008 |
| 76 | #define COMM_SE 0x0008 |
| 77 | #define COMM_D 0x0008 |
| 78 | #define COMM_Z 0x0008 |
| 79 | #define COMM_CH 0x0008 |
| 80 | #define COMM_SM 0x0008 |
| 81 | #define COMM_R 0x0008 |
| 82 | #define COMM_IM 0x0001 |
| 83 | |
| 84 | #define COMM_PS 0x4000 |
| 85 | #define COMM_PST 0x4000 |
| 86 | #define COMM_CIB 0x4000 |
| 87 | #define COMM_RTS 0x4000 |
| 88 | #define COMM_DT 0x2000 |
| 89 | #define COMM_SPU 0x1000 |
| 90 | #define COMM_F 0x0800 |
| 91 | #define COMM_NTP 0x0400 |
| 92 | #define COMM_ICP 0x0200 |
| 93 | #define COMM_RST 0x0100 |
| 94 | |
| 95 | #define PULSE_PROG 0x01 |
| 96 | #define PULSE_SPUE 0x02 |
| 97 | |
| 98 | #define BRANCH_MAIN 0xCC |
| 99 | #define BRANCH_AUX 0x33 |
| 100 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 101 | /* Status flags */ |
| 102 | #define ST_SPUA 0x01 /* Strong Pull-up is active */ |
| 103 | #define ST_PRGA 0x02 /* 12V programming pulse is being generated */ |
| 104 | #define ST_12VP 0x04 /* external 12V programming voltage is present */ |
| 105 | #define ST_PMOD 0x08 /* DS2490 powered from USB and external sources */ |
| 106 | #define ST_HALT 0x10 /* DS2490 is currently halted */ |
| 107 | #define ST_IDLE 0x20 /* DS2490 is currently idle */ |
| 108 | #define ST_EPOF 0x80 |
| 109 | |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 110 | /* Result Register flags */ |
| 111 | #define RR_DETECT 0xA5 /* New device detected */ |
| 112 | #define RR_NRS 0x01 /* Reset no presence or ... */ |
| 113 | #define RR_SH 0x02 /* short on reset or set path */ |
| 114 | #define RR_APP 0x04 /* alarming presence on reset */ |
| 115 | #define RR_VPP 0x08 /* 12V expected not seen */ |
| 116 | #define RR_CMP 0x10 /* compare error */ |
| 117 | #define RR_CRC 0x20 /* CRC error detected */ |
| 118 | #define RR_RDP 0x40 /* redirected page */ |
| 119 | #define RR_EOS 0x80 /* end of search error */ |
| 120 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 121 | #define SPEED_NORMAL 0x00 |
| 122 | #define SPEED_FLEXIBLE 0x01 |
| 123 | #define SPEED_OVERDRIVE 0x02 |
| 124 | |
| 125 | #define NUM_EP 4 |
| 126 | #define EP_CONTROL 0 |
| 127 | #define EP_STATUS 1 |
| 128 | #define EP_DATA_OUT 2 |
| 129 | #define EP_DATA_IN 3 |
| 130 | |
| 131 | struct ds_device |
| 132 | { |
| 133 | struct list_head ds_entry; |
| 134 | |
| 135 | struct usb_device *udev; |
| 136 | struct usb_interface *intf; |
| 137 | |
| 138 | int ep[NUM_EP]; |
| 139 | |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 140 | /* Strong PullUp |
| 141 | * 0: pullup not active, else duration in milliseconds |
| 142 | */ |
| 143 | int spu_sleep; |
| 144 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 145 | struct w1_bus_master master; |
| 146 | }; |
| 147 | |
| 148 | struct ds_status |
| 149 | { |
| 150 | u8 enable; |
| 151 | u8 speed; |
| 152 | u8 pullup_dur; |
| 153 | u8 ppuls_dur; |
| 154 | u8 pulldown_slew; |
| 155 | u8 write1_time; |
| 156 | u8 write0_time; |
| 157 | u8 reserved0; |
| 158 | u8 status; |
| 159 | u8 command0; |
| 160 | u8 command1; |
| 161 | u8 command_buffer_status; |
| 162 | u8 data_out_buffer_status; |
| 163 | u8 data_in_buffer_status; |
| 164 | u8 reserved1; |
| 165 | u8 reserved2; |
| 166 | |
| 167 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
| 169 | static struct usb_device_id ds_id_table [] = { |
| 170 | { USB_DEVICE(0x04fa, 0x2490) }, |
| 171 | { }, |
| 172 | }; |
| 173 | MODULE_DEVICE_TABLE(usb, ds_id_table); |
| 174 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 175 | static int ds_probe(struct usb_interface *, const struct usb_device_id *); |
| 176 | static void ds_disconnect(struct usb_interface *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | static int ds_send_control(struct ds_device *, u16, u16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | static int ds_send_control_cmd(struct ds_device *, u16, u16); |
| 180 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 181 | static LIST_HEAD(ds_devices); |
Evgeniy Polyakov | abd52a1 | 2006-04-03 12:04:27 +0400 | [diff] [blame] | 182 | static DEFINE_MUTEX(ds_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | |
| 184 | static struct usb_driver ds_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | .name = "DS9490R", |
| 186 | .probe = ds_probe, |
| 187 | .disconnect = ds_disconnect, |
| 188 | .id_table = ds_id_table, |
| 189 | }; |
| 190 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | static int ds_send_control_cmd(struct ds_device *dev, u16 value, u16 index) |
| 192 | { |
| 193 | int err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 194 | |
| 195 | err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | CONTROL_CMD, 0x40, value, index, NULL, 0, 1000); |
| 197 | if (err < 0) { |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 198 | printk(KERN_ERR "Failed to send command control message %x.%x: err=%d.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | value, index, err); |
| 200 | return err; |
| 201 | } |
| 202 | |
| 203 | return err; |
| 204 | } |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 205 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | static int ds_send_control_mode(struct ds_device *dev, u16 value, u16 index) |
| 207 | { |
| 208 | int err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 209 | |
| 210 | err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | MODE_CMD, 0x40, value, index, NULL, 0, 1000); |
| 212 | if (err < 0) { |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 213 | printk(KERN_ERR "Failed to send mode control message %x.%x: err=%d.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | value, index, err); |
| 215 | return err; |
| 216 | } |
| 217 | |
| 218 | return err; |
| 219 | } |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | static int ds_send_control(struct ds_device *dev, u16 value, u16 index) |
| 222 | { |
| 223 | int err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 224 | |
| 225 | err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | COMM_CMD, 0x40, value, index, NULL, 0, 1000); |
| 227 | if (err < 0) { |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 228 | printk(KERN_ERR "Failed to send control message %x.%x: err=%d.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | value, index, err); |
| 230 | return err; |
| 231 | } |
| 232 | |
| 233 | return err; |
| 234 | } |
| 235 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 236 | static int ds_recv_status_nodump(struct ds_device *dev, struct ds_status *st, |
| 237 | unsigned char *buf, int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | { |
| 239 | int count, err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 240 | |
Li Zefan | e9b5a49 | 2007-11-14 16:58:34 -0800 | [diff] [blame] | 241 | memset(st, 0, sizeof(*st)); |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 242 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | count = 0; |
| 244 | err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_STATUS]), buf, size, &count, 100); |
| 245 | if (err < 0) { |
| 246 | printk(KERN_ERR "Failed to read 1-wire data from 0x%x: err=%d.\n", dev->ep[EP_STATUS], err); |
| 247 | return err; |
| 248 | } |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 249 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | if (count >= sizeof(*st)) |
| 251 | memcpy(st, buf, sizeof(*st)); |
| 252 | |
| 253 | return count; |
| 254 | } |
| 255 | |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 256 | static inline void ds_print_msg(unsigned char *buf, unsigned char *str, int off) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | { |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 258 | printk(KERN_INFO "%45s: %8x\n", str, buf[off]); |
| 259 | } |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 260 | |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 261 | static void ds_dump_status(struct ds_device *dev, unsigned char *buf, int count) |
| 262 | { |
| 263 | int i; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 264 | |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 265 | printk(KERN_INFO "0x%x: count=%d, status: ", dev->ep[EP_STATUS], count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | for (i=0; i<count; ++i) |
| 267 | printk("%02x ", buf[i]); |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 268 | printk(KERN_INFO "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
| 270 | if (count >= 16) { |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 271 | ds_print_msg(buf, "enable flag", 0); |
| 272 | ds_print_msg(buf, "1-wire speed", 1); |
| 273 | ds_print_msg(buf, "strong pullup duration", 2); |
| 274 | ds_print_msg(buf, "programming pulse duration", 3); |
| 275 | ds_print_msg(buf, "pulldown slew rate control", 4); |
| 276 | ds_print_msg(buf, "write-1 low time", 5); |
| 277 | ds_print_msg(buf, "data sample offset/write-0 recovery time", |
| 278 | 6); |
| 279 | ds_print_msg(buf, "reserved (test register)", 7); |
| 280 | ds_print_msg(buf, "device status flags", 8); |
| 281 | ds_print_msg(buf, "communication command byte 1", 9); |
| 282 | ds_print_msg(buf, "communication command byte 2", 10); |
| 283 | ds_print_msg(buf, "communication command buffer status", 11); |
| 284 | ds_print_msg(buf, "1-wire data output buffer status", 12); |
| 285 | ds_print_msg(buf, "1-wire data input buffer status", 13); |
| 286 | ds_print_msg(buf, "reserved", 14); |
| 287 | ds_print_msg(buf, "reserved", 15); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | } |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 289 | for (i = 16; i < count; ++i) { |
| 290 | if (buf[i] == RR_DETECT) { |
| 291 | ds_print_msg(buf, "new device detect", i); |
| 292 | continue; |
| 293 | } |
| 294 | ds_print_msg(buf, "Result Register Value: ", i); |
| 295 | if (buf[i] & RR_NRS) |
| 296 | printk(KERN_INFO "NRS: Reset no presence or ...\n"); |
| 297 | if (buf[i] & RR_SH) |
| 298 | printk(KERN_INFO "SH: short on reset or set path\n"); |
| 299 | if (buf[i] & RR_APP) |
| 300 | printk(KERN_INFO "APP: alarming presence on reset\n"); |
| 301 | if (buf[i] & RR_VPP) |
| 302 | printk(KERN_INFO "VPP: 12V expected not seen\n"); |
| 303 | if (buf[i] & RR_CMP) |
| 304 | printk(KERN_INFO "CMP: compare error\n"); |
| 305 | if (buf[i] & RR_CRC) |
| 306 | printk(KERN_INFO "CRC: CRC error detected\n"); |
| 307 | if (buf[i] & RR_RDP) |
| 308 | printk(KERN_INFO "RDP: redirected page\n"); |
| 309 | if (buf[i] & RR_EOS) |
| 310 | printk(KERN_INFO "EOS: end of search error\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | } |
| 313 | |
| 314 | static int ds_recv_data(struct ds_device *dev, unsigned char *buf, int size) |
| 315 | { |
| 316 | int count, err; |
| 317 | struct ds_status st; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 318 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | count = 0; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 320 | err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | buf, size, &count, 1000); |
| 322 | if (err < 0) { |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 323 | u8 buf[0x20]; |
| 324 | int count; |
| 325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | printk(KERN_INFO "Clearing ep0x%x.\n", dev->ep[EP_DATA_IN]); |
| 327 | usb_clear_halt(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN])); |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 328 | |
| 329 | count = ds_recv_status_nodump(dev, &st, buf, sizeof(buf)); |
| 330 | ds_dump_status(dev, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | return err; |
| 332 | } |
| 333 | |
| 334 | #if 0 |
| 335 | { |
| 336 | int i; |
| 337 | |
| 338 | printk("%s: count=%d: ", __func__, count); |
| 339 | for (i=0; i<count; ++i) |
| 340 | printk("%02x ", buf[i]); |
| 341 | printk("\n"); |
| 342 | } |
| 343 | #endif |
| 344 | return count; |
| 345 | } |
| 346 | |
| 347 | static int ds_send_data(struct ds_device *dev, unsigned char *buf, int len) |
| 348 | { |
| 349 | int count, err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 350 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | count = 0; |
| 352 | err = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->ep[EP_DATA_OUT]), buf, len, &count, 1000); |
| 353 | if (err < 0) { |
David Fries | 95cfaeb | 2008-10-15 22:05:02 -0700 | [diff] [blame] | 354 | printk(KERN_ERR "Failed to write 1-wire data to ep0x%x: " |
| 355 | "err=%d.\n", dev->ep[EP_DATA_OUT], err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | return err; |
| 357 | } |
| 358 | |
| 359 | return err; |
| 360 | } |
| 361 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 362 | #if 0 |
| 363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | int ds_stop_pulse(struct ds_device *dev, int limit) |
| 365 | { |
| 366 | struct ds_status st; |
| 367 | int count = 0, err = 0; |
| 368 | u8 buf[0x20]; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 369 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | do { |
| 371 | err = ds_send_control(dev, CTL_HALT_EXE_IDLE, 0); |
| 372 | if (err) |
| 373 | break; |
| 374 | err = ds_send_control(dev, CTL_RESUME_EXE, 0); |
| 375 | if (err) |
| 376 | break; |
| 377 | err = ds_recv_status_nodump(dev, &st, buf, sizeof(buf)); |
| 378 | if (err) |
| 379 | break; |
| 380 | |
| 381 | if ((st.status & ST_SPUA) == 0) { |
| 382 | err = ds_send_control_mode(dev, MOD_PULSE_EN, 0); |
| 383 | if (err) |
| 384 | break; |
| 385 | } |
| 386 | } while(++count < limit); |
| 387 | |
| 388 | return err; |
| 389 | } |
| 390 | |
| 391 | int ds_detect(struct ds_device *dev, struct ds_status *st) |
| 392 | { |
| 393 | int err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0); |
| 396 | if (err) |
| 397 | return err; |
| 398 | |
| 399 | err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, 0); |
| 400 | if (err) |
| 401 | return err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 402 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM | COMM_TYPE, 0x40); |
| 404 | if (err) |
| 405 | return err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 406 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_PROG); |
| 408 | if (err) |
| 409 | return err; |
| 410 | |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 411 | err = ds_dump_status(dev, st); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
| 413 | return err; |
| 414 | } |
| 415 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 416 | #endif /* 0 */ |
| 417 | |
| 418 | static int ds_wait_status(struct ds_device *dev, struct ds_status *st) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | { |
| 420 | u8 buf[0x20]; |
| 421 | int err, count = 0; |
| 422 | |
| 423 | do { |
| 424 | err = ds_recv_status_nodump(dev, st, buf, sizeof(buf)); |
| 425 | #if 0 |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 426 | if (err >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | int i; |
| 428 | printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], err); |
| 429 | for (i=0; i<err; ++i) |
| 430 | printk("%02x ", buf[i]); |
| 431 | printk("\n"); |
| 432 | } |
| 433 | #endif |
| 434 | } while(!(buf[0x08] & 0x20) && !(err < 0) && ++count < 100); |
| 435 | |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 436 | if (err >= 16 && st->status & ST_EPOF) { |
| 437 | printk(KERN_INFO "Resetting device after ST_EPOF.\n"); |
| 438 | ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0); |
| 439 | /* Always dump the device status. */ |
| 440 | count = 101; |
| 441 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 443 | /* Dump the status for errors or if there is extended return data. |
| 444 | * The extended status includes new device detection (maybe someone |
| 445 | * can do something with it). |
| 446 | */ |
| 447 | if (err > 16 || count >= 100 || err < 0) |
| 448 | ds_dump_status(dev, buf, err); |
| 449 | |
| 450 | /* Extended data isn't an error. Well, a short is, but the dump |
| 451 | * would have already told the user that and we can't do anything |
| 452 | * about it in software anyway. |
| 453 | */ |
| 454 | if (count >= 100 || err < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | return -1; |
David Fries | 4b9cf1b | 2008-10-15 22:05:06 -0700 | [diff] [blame^] | 456 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | } |
| 459 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 460 | static int ds_reset(struct ds_device *dev, struct ds_status *st) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | { |
| 462 | int err; |
| 463 | |
| 464 | //err = ds_send_control(dev, COMM_1_WIRE_RESET | COMM_F | COMM_IM | COMM_SE, SPEED_FLEXIBLE); |
| 465 | err = ds_send_control(dev, 0x43, SPEED_NORMAL); |
| 466 | if (err) |
| 467 | return err; |
| 468 | |
| 469 | ds_wait_status(dev, st); |
| 470 | #if 0 |
| 471 | if (st->command_buffer_status) { |
| 472 | printk(KERN_INFO "Short circuit.\n"); |
| 473 | return -EIO; |
| 474 | } |
| 475 | #endif |
Evgeniy Polyakov | bd529cf | 2005-12-06 13:38:28 +0300 | [diff] [blame] | 476 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | return 0; |
| 478 | } |
| 479 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 480 | #if 0 |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 481 | static int ds_set_speed(struct ds_device *dev, int speed) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | { |
| 483 | int err; |
Evgeniy Polyakov | bd529cf | 2005-12-06 13:38:28 +0300 | [diff] [blame] | 484 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | if (speed != SPEED_NORMAL && speed != SPEED_FLEXIBLE && speed != SPEED_OVERDRIVE) |
| 486 | return -EINVAL; |
| 487 | |
| 488 | if (speed != SPEED_OVERDRIVE) |
| 489 | speed = SPEED_FLEXIBLE; |
| 490 | |
| 491 | speed &= 0xff; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | err = ds_send_control_mode(dev, MOD_1WIRE_SPEED, speed); |
| 494 | if (err) |
| 495 | return err; |
| 496 | |
| 497 | return err; |
| 498 | } |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 499 | #endif /* 0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 501 | static int ds_set_pullup(struct ds_device *dev, int delay) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | { |
| 503 | int err; |
| 504 | u8 del = 1 + (u8)(delay >> 4); |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 505 | |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 506 | dev->spu_sleep = 0; |
| 507 | err = ds_send_control_mode(dev, MOD_PULSE_EN, delay ? PULSE_SPUE : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | if (err) |
| 509 | return err; |
| 510 | |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 511 | if (delay) { |
| 512 | err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, del); |
| 513 | if (err) |
| 514 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 516 | /* Just storing delay would not get the trunication and |
| 517 | * roundup. |
| 518 | */ |
| 519 | dev->spu_sleep = del<<4; |
| 520 | } |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | return err; |
| 523 | } |
| 524 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 525 | static int ds_touch_bit(struct ds_device *dev, u8 bit, u8 *tbit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | { |
David Fries | 6e10f65 | 2008-10-15 22:05:05 -0700 | [diff] [blame] | 527 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | struct ds_status st; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 529 | |
David Fries | 6e10f65 | 2008-10-15 22:05:05 -0700 | [diff] [blame] | 530 | err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | (bit ? COMM_D : 0), |
| 531 | 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | if (err) |
| 533 | return err; |
| 534 | |
David Fries | 6e10f65 | 2008-10-15 22:05:05 -0700 | [diff] [blame] | 535 | ds_wait_status(dev, &st); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | |
| 537 | err = ds_recv_data(dev, tbit, sizeof(*tbit)); |
| 538 | if (err < 0) |
| 539 | return err; |
| 540 | |
| 541 | return 0; |
| 542 | } |
| 543 | |
David Fries | a08e2d3 | 2008-10-15 22:05:04 -0700 | [diff] [blame] | 544 | #if 0 |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 545 | static int ds_write_bit(struct ds_device *dev, u8 bit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | { |
| 547 | int err; |
| 548 | struct ds_status st; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 549 | |
David Fries | e1c86d2 | 2008-10-15 22:05:04 -0700 | [diff] [blame] | 550 | /* Set COMM_ICP to write without a readback. Note, this will |
| 551 | * produce one time slot, a down followed by an up with COMM_D |
| 552 | * only determing the timing. |
| 553 | */ |
| 554 | err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | COMM_ICP | |
| 555 | (bit ? COMM_D : 0), 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | if (err) |
| 557 | return err; |
| 558 | |
| 559 | ds_wait_status(dev, &st); |
| 560 | |
| 561 | return 0; |
| 562 | } |
David Fries | a08e2d3 | 2008-10-15 22:05:04 -0700 | [diff] [blame] | 563 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 565 | static int ds_write_byte(struct ds_device *dev, u8 byte) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | { |
| 567 | int err; |
| 568 | struct ds_status st; |
| 569 | u8 rbyte; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 570 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM | COMM_SPU, byte); |
| 572 | if (err) |
| 573 | return err; |
| 574 | |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 575 | if (dev->spu_sleep) |
| 576 | msleep(dev->spu_sleep); |
| 577 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | err = ds_wait_status(dev, &st); |
| 579 | if (err) |
| 580 | return err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 581 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | err = ds_recv_data(dev, &rbyte, sizeof(rbyte)); |
| 583 | if (err < 0) |
| 584 | return err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 585 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | return !(byte == rbyte); |
| 587 | } |
| 588 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 589 | static int ds_read_byte(struct ds_device *dev, u8 *byte) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | { |
| 591 | int err; |
| 592 | struct ds_status st; |
| 593 | |
| 594 | err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM , 0xff); |
| 595 | if (err) |
| 596 | return err; |
| 597 | |
| 598 | ds_wait_status(dev, &st); |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 599 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | err = ds_recv_data(dev, byte, sizeof(*byte)); |
| 601 | if (err < 0) |
| 602 | return err; |
| 603 | |
| 604 | return 0; |
| 605 | } |
| 606 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 607 | static int ds_read_block(struct ds_device *dev, u8 *buf, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | { |
| 609 | struct ds_status st; |
| 610 | int err; |
| 611 | |
| 612 | if (len > 64*1024) |
| 613 | return -E2BIG; |
| 614 | |
| 615 | memset(buf, 0xFF, len); |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 616 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | err = ds_send_data(dev, buf, len); |
| 618 | if (err < 0) |
| 619 | return err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 620 | |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 621 | err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | if (err) |
| 623 | return err; |
| 624 | |
| 625 | ds_wait_status(dev, &st); |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 626 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | memset(buf, 0x00, len); |
| 628 | err = ds_recv_data(dev, buf, len); |
| 629 | |
| 630 | return err; |
| 631 | } |
| 632 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 633 | static int ds_write_block(struct ds_device *dev, u8 *buf, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | { |
| 635 | int err; |
| 636 | struct ds_status st; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 637 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | err = ds_send_data(dev, buf, len); |
| 639 | if (err < 0) |
| 640 | return err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 641 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | ds_wait_status(dev, &st); |
| 643 | |
| 644 | err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | COMM_SPU, len); |
| 645 | if (err) |
| 646 | return err; |
| 647 | |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 648 | if (dev->spu_sleep) |
| 649 | msleep(dev->spu_sleep); |
| 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | ds_wait_status(dev, &st); |
| 652 | |
| 653 | err = ds_recv_data(dev, buf, len); |
| 654 | if (err < 0) |
| 655 | return err; |
| 656 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | return !(err == len); |
| 658 | } |
| 659 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 660 | #if 0 |
| 661 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 662 | static int ds_search(struct ds_device *dev, u64 init, u64 *buf, u8 id_number, int conditional_search) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | { |
| 664 | int err; |
| 665 | u16 value, index; |
| 666 | struct ds_status st; |
| 667 | |
| 668 | memset(buf, 0, sizeof(buf)); |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 669 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | err = ds_send_data(ds_dev, (unsigned char *)&init, 8); |
| 671 | if (err) |
| 672 | return err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 673 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | ds_wait_status(ds_dev, &st); |
| 675 | |
| 676 | value = COMM_SEARCH_ACCESS | COMM_IM | COMM_SM | COMM_F | COMM_RTS; |
| 677 | index = (conditional_search ? 0xEC : 0xF0) | (id_number << 8); |
| 678 | err = ds_send_control(ds_dev, value, index); |
| 679 | if (err) |
| 680 | return err; |
| 681 | |
| 682 | ds_wait_status(ds_dev, &st); |
| 683 | |
| 684 | err = ds_recv_data(ds_dev, (unsigned char *)buf, 8*id_number); |
| 685 | if (err < 0) |
| 686 | return err; |
| 687 | |
| 688 | return err/8; |
| 689 | } |
| 690 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 691 | static int ds_match_access(struct ds_device *dev, u64 init) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | { |
| 693 | int err; |
| 694 | struct ds_status st; |
| 695 | |
| 696 | err = ds_send_data(dev, (unsigned char *)&init, sizeof(init)); |
| 697 | if (err) |
| 698 | return err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 699 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | ds_wait_status(dev, &st); |
| 701 | |
| 702 | err = ds_send_control(dev, COMM_MATCH_ACCESS | COMM_IM | COMM_RST, 0x0055); |
| 703 | if (err) |
| 704 | return err; |
| 705 | |
| 706 | ds_wait_status(dev, &st); |
| 707 | |
| 708 | return 0; |
| 709 | } |
| 710 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 711 | static int ds_set_path(struct ds_device *dev, u64 init) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | { |
| 713 | int err; |
| 714 | struct ds_status st; |
| 715 | u8 buf[9]; |
| 716 | |
| 717 | memcpy(buf, &init, 8); |
| 718 | buf[8] = BRANCH_MAIN; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 719 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | err = ds_send_data(dev, buf, sizeof(buf)); |
| 721 | if (err) |
| 722 | return err; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 723 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | ds_wait_status(dev, &st); |
| 725 | |
| 726 | err = ds_send_control(dev, COMM_SET_PATH | COMM_IM | COMM_RST, 0); |
| 727 | if (err) |
| 728 | return err; |
| 729 | |
| 730 | ds_wait_status(dev, &st); |
| 731 | |
| 732 | return 0; |
| 733 | } |
| 734 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 735 | #endif /* 0 */ |
| 736 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 737 | static u8 ds9490r_touch_bit(void *data, u8 bit) |
| 738 | { |
| 739 | u8 ret; |
| 740 | struct ds_device *dev = data; |
| 741 | |
| 742 | if (ds_touch_bit(dev, bit, &ret)) |
| 743 | return 0; |
| 744 | |
| 745 | return ret; |
| 746 | } |
| 747 | |
David Fries | a08e2d3 | 2008-10-15 22:05:04 -0700 | [diff] [blame] | 748 | #if 0 |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 749 | static void ds9490r_write_bit(void *data, u8 bit) |
| 750 | { |
| 751 | struct ds_device *dev = data; |
| 752 | |
| 753 | ds_write_bit(dev, bit); |
| 754 | } |
| 755 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 756 | static u8 ds9490r_read_bit(void *data) |
| 757 | { |
| 758 | struct ds_device *dev = data; |
| 759 | int err; |
| 760 | u8 bit = 0; |
| 761 | |
| 762 | err = ds_touch_bit(dev, 1, &bit); |
| 763 | if (err) |
| 764 | return 0; |
| 765 | |
| 766 | return bit & 1; |
| 767 | } |
David Fries | a08e2d3 | 2008-10-15 22:05:04 -0700 | [diff] [blame] | 768 | #endif |
| 769 | |
| 770 | static void ds9490r_write_byte(void *data, u8 byte) |
| 771 | { |
| 772 | struct ds_device *dev = data; |
| 773 | |
| 774 | ds_write_byte(dev, byte); |
| 775 | } |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 776 | |
| 777 | static u8 ds9490r_read_byte(void *data) |
| 778 | { |
| 779 | struct ds_device *dev = data; |
| 780 | int err; |
| 781 | u8 byte = 0; |
| 782 | |
| 783 | err = ds_read_byte(dev, &byte); |
| 784 | if (err) |
| 785 | return 0; |
| 786 | |
| 787 | return byte; |
| 788 | } |
| 789 | |
| 790 | static void ds9490r_write_block(void *data, const u8 *buf, int len) |
| 791 | { |
| 792 | struct ds_device *dev = data; |
| 793 | |
| 794 | ds_write_block(dev, (u8 *)buf, len); |
| 795 | } |
| 796 | |
| 797 | static u8 ds9490r_read_block(void *data, u8 *buf, int len) |
| 798 | { |
| 799 | struct ds_device *dev = data; |
| 800 | int err; |
| 801 | |
| 802 | err = ds_read_block(dev, buf, len); |
| 803 | if (err < 0) |
| 804 | return 0; |
| 805 | |
| 806 | return len; |
| 807 | } |
| 808 | |
| 809 | static u8 ds9490r_reset(void *data) |
| 810 | { |
| 811 | struct ds_device *dev = data; |
| 812 | struct ds_status st; |
| 813 | int err; |
| 814 | |
| 815 | memset(&st, 0, sizeof(st)); |
| 816 | |
| 817 | err = ds_reset(dev, &st); |
| 818 | if (err) |
| 819 | return 1; |
| 820 | |
| 821 | return 0; |
| 822 | } |
| 823 | |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 824 | static u8 ds9490r_set_pullup(void *data, int delay) |
| 825 | { |
| 826 | struct ds_device *dev = data; |
| 827 | |
| 828 | if (ds_set_pullup(dev, delay)) |
| 829 | return 1; |
| 830 | |
| 831 | return 0; |
| 832 | } |
| 833 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 834 | static int ds_w1_init(struct ds_device *dev) |
| 835 | { |
| 836 | memset(&dev->master, 0, sizeof(struct w1_bus_master)); |
| 837 | |
| 838 | dev->master.data = dev; |
| 839 | dev->master.touch_bit = &ds9490r_touch_bit; |
David Fries | a08e2d3 | 2008-10-15 22:05:04 -0700 | [diff] [blame] | 840 | /* read_bit and write_bit in w1_bus_master are expected to set and |
| 841 | * sample the line level. For write_bit that means it is expected to |
| 842 | * set it to that value and leave it there. ds2490 only supports an |
| 843 | * individual time slot at the lowest level. The requirement from |
| 844 | * pulling the bus state down to reading the state is 15us, something |
| 845 | * that isn't realistic on the USB bus anyway. |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 846 | dev->master.read_bit = &ds9490r_read_bit; |
| 847 | dev->master.write_bit = &ds9490r_write_bit; |
David Fries | a08e2d3 | 2008-10-15 22:05:04 -0700 | [diff] [blame] | 848 | */ |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 849 | dev->master.read_byte = &ds9490r_read_byte; |
| 850 | dev->master.write_byte = &ds9490r_write_byte; |
| 851 | dev->master.read_block = &ds9490r_read_block; |
| 852 | dev->master.write_block = &ds9490r_write_block; |
| 853 | dev->master.reset_bus = &ds9490r_reset; |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 854 | dev->master.set_pullup = &ds9490r_set_pullup; |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 855 | |
| 856 | return w1_add_master_device(&dev->master); |
| 857 | } |
| 858 | |
| 859 | static void ds_w1_fini(struct ds_device *dev) |
| 860 | { |
| 861 | w1_remove_master_device(&dev->master); |
| 862 | } |
| 863 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 864 | static int ds_probe(struct usb_interface *intf, |
| 865 | const struct usb_device_id *udev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | { |
| 867 | struct usb_device *udev = interface_to_usbdev(intf); |
| 868 | struct usb_endpoint_descriptor *endpoint; |
| 869 | struct usb_host_interface *iface_desc; |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 870 | struct ds_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | int i, err; |
| 872 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 873 | dev = kmalloc(sizeof(struct ds_device), GFP_KERNEL); |
| 874 | if (!dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | printk(KERN_INFO "Failed to allocate new DS9490R structure.\n"); |
| 876 | return -ENOMEM; |
| 877 | } |
David Fries | 1f4ec2d | 2008-10-15 22:05:03 -0700 | [diff] [blame] | 878 | dev->spu_sleep = 0; |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 879 | dev->udev = usb_get_dev(udev); |
| 880 | if (!dev->udev) { |
| 881 | err = -ENOMEM; |
| 882 | goto err_out_free; |
| 883 | } |
| 884 | memset(dev->ep, 0, sizeof(dev->ep)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 886 | usb_set_intfdata(intf, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 888 | err = usb_set_interface(dev->udev, intf->altsetting[0].desc.bInterfaceNumber, 3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | if (err) { |
| 890 | printk(KERN_ERR "Failed to set alternative setting 3 for %d interface: err=%d.\n", |
| 891 | intf->altsetting[0].desc.bInterfaceNumber, err); |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 892 | goto err_out_clear; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | } |
| 894 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 895 | err = usb_reset_configuration(dev->udev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | if (err) { |
| 897 | printk(KERN_ERR "Failed to reset configuration: err=%d.\n", err); |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 898 | goto err_out_clear; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | } |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 900 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | iface_desc = &intf->altsetting[0]; |
| 902 | if (iface_desc->desc.bNumEndpoints != NUM_EP-1) { |
| 903 | printk(KERN_INFO "Num endpoints=%d. It is not DS9490R.\n", iface_desc->desc.bNumEndpoints); |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 904 | err = -EINVAL; |
| 905 | goto err_out_clear; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | } |
| 907 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | /* |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 909 | * This loop doesn'd show control 0 endpoint, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | * so we will fill only 1-3 endpoints entry. |
| 911 | */ |
| 912 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| 913 | endpoint = &iface_desc->endpoint[i].desc; |
| 914 | |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 915 | dev->ep[i+1] = endpoint->bEndpointAddress; |
| 916 | #if 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | printk("%d: addr=%x, size=%d, dir=%s, type=%x\n", |
| 918 | i, endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize), |
| 919 | (endpoint->bEndpointAddress & USB_DIR_IN)?"IN":"OUT", |
| 920 | endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | #endif |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 922 | } |
| 923 | |
| 924 | err = ds_w1_init(dev); |
| 925 | if (err) |
| 926 | goto err_out_clear; |
| 927 | |
Evgeniy Polyakov | abd52a1 | 2006-04-03 12:04:27 +0400 | [diff] [blame] | 928 | mutex_lock(&ds_mutex); |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 929 | list_add_tail(&dev->ds_entry, &ds_devices); |
Evgeniy Polyakov | abd52a1 | 2006-04-03 12:04:27 +0400 | [diff] [blame] | 930 | mutex_unlock(&ds_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | |
| 932 | return 0; |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 933 | |
| 934 | err_out_clear: |
| 935 | usb_set_intfdata(intf, NULL); |
| 936 | usb_put_dev(dev->udev); |
| 937 | err_out_free: |
| 938 | kfree(dev); |
| 939 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | } |
| 941 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 942 | static void ds_disconnect(struct usb_interface *intf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | { |
| 944 | struct ds_device *dev; |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 945 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | dev = usb_get_intfdata(intf); |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 947 | if (!dev) |
| 948 | return; |
| 949 | |
Evgeniy Polyakov | abd52a1 | 2006-04-03 12:04:27 +0400 | [diff] [blame] | 950 | mutex_lock(&ds_mutex); |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 951 | list_del(&dev->ds_entry); |
Evgeniy Polyakov | abd52a1 | 2006-04-03 12:04:27 +0400 | [diff] [blame] | 952 | mutex_unlock(&ds_mutex); |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 953 | |
| 954 | ds_w1_fini(dev); |
| 955 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | usb_set_intfdata(intf, NULL); |
| 957 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | usb_put_dev(dev->udev); |
| 959 | kfree(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | } |
| 961 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 962 | static int ds_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | { |
| 964 | int err; |
| 965 | |
| 966 | err = usb_register(&ds_driver); |
| 967 | if (err) { |
| 968 | printk(KERN_INFO "Failed to register DS9490R USB device: err=%d.\n", err); |
| 969 | return err; |
| 970 | } |
| 971 | |
| 972 | return 0; |
| 973 | } |
| 974 | |
Evgeniy Polyakov | 8949d2a | 2005-08-03 15:14:50 +0400 | [diff] [blame] | 975 | static void ds_fini(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | { |
| 977 | usb_deregister(&ds_driver); |
| 978 | } |
| 979 | |
| 980 | module_init(ds_init); |
| 981 | module_exit(ds_fini); |
| 982 | |
| 983 | MODULE_LICENSE("GPL"); |
| 984 | MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>"); |
Evgeniy Polyakov | 81f6075 | 2006-03-23 19:11:58 +0300 | [diff] [blame] | 985 | MODULE_DESCRIPTION("DS2490 USB <-> W1 bus master driver (DS9490*)"); |