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Commit | Line | Data |
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63274cd7 AB |
1 | /* |
2 | * comedi/drivers/dt9812.c | |
3 | * COMEDI driver for DataTranslation DT9812 USB module | |
4 | * | |
5 | * Copyright (C) 2005 Anders Blomdell <anders.blomdell@control.lth.se> | |
6 | * | |
7 | * COMEDI - Linux Control and Measurement Device Interface | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | ||
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | * | |
23 | */ | |
24 | ||
25 | /* | |
26 | Driver: dt9812 | |
27 | Description: Data Translation DT9812 USB module | |
28 | Author: anders.blomdell@control.lth.se (Anders Blomdell) | |
29 | Status: in development | |
30 | Devices: [Data Translation] DT9812 (dt9812) | |
31 | Updated: Sun Nov 20 20:18:34 EST 2005 | |
32 | ||
33 | This driver works, but bulk transfers not implemented. Might be a starting point | |
34 | for someone else. I found out too late that USB has too high latencies (>1 ms) | |
35 | for my needs. | |
36 | */ | |
37 | ||
38 | /* | |
39 | * Nota Bene: | |
40 | * 1. All writes to command pipe has to be 32 bytes (ISP1181B SHRTP=0 ?) | |
41 | * 2. The DDK source (as of sep 2005) is in error regarding the | |
42 | * input MUX bits (example code says P4, but firmware schematics | |
43 | * says P1). | |
44 | */ | |
45 | ||
63274cd7 AB |
46 | #include <linux/kernel.h> |
47 | #include <linux/errno.h> | |
48 | #include <linux/init.h> | |
49 | #include <linux/slab.h> | |
50 | #include <linux/module.h> | |
51 | #include <linux/kref.h> | |
f52a8af7 | 52 | #include <linux/uaccess.h> |
63274cd7 | 53 | #include <linux/usb.h> |
f52a8af7 | 54 | |
63274cd7 | 55 | #include "../comedidev.h" |
c73190fa GKH |
56 | |
57 | #define DT9812_DIAGS_BOARD_INFO_ADDR 0xFBFF | |
58 | #define DT9812_MAX_WRITE_CMD_PIPE_SIZE 32 | |
59 | #define DT9812_MAX_READ_CMD_PIPE_SIZE 32 | |
60 | ||
61 | /* | |
62 | * See Silican Laboratories C8051F020/1/2/3 manual | |
63 | */ | |
64 | #define F020_SFR_P4 0x84 | |
65 | #define F020_SFR_P1 0x90 | |
66 | #define F020_SFR_P2 0xa0 | |
67 | #define F020_SFR_P3 0xb0 | |
68 | #define F020_SFR_AMX0CF 0xba | |
69 | #define F020_SFR_AMX0SL 0xbb | |
70 | #define F020_SFR_ADC0CF 0xbc | |
71 | #define F020_SFR_ADC0L 0xbe | |
72 | #define F020_SFR_ADC0H 0xbf | |
73 | #define F020_SFR_DAC0L 0xd2 | |
74 | #define F020_SFR_DAC0H 0xd3 | |
75 | #define F020_SFR_DAC0CN 0xd4 | |
76 | #define F020_SFR_DAC1L 0xd5 | |
77 | #define F020_SFR_DAC1H 0xd6 | |
78 | #define F020_SFR_DAC1CN 0xd7 | |
79 | #define F020_SFR_ADC0CN 0xe8 | |
80 | ||
81 | #define F020_MASK_ADC0CF_AMP0GN0 0x01 | |
82 | #define F020_MASK_ADC0CF_AMP0GN1 0x02 | |
83 | #define F020_MASK_ADC0CF_AMP0GN2 0x04 | |
84 | ||
85 | #define F020_MASK_ADC0CN_AD0EN 0x80 | |
86 | #define F020_MASK_ADC0CN_AD0INT 0x20 | |
87 | #define F020_MASK_ADC0CN_AD0BUSY 0x10 | |
88 | ||
89 | #define F020_MASK_DACxCN_DACxEN 0x80 | |
90 | ||
98f3c672 | 91 | enum { |
0a85b6f0 | 92 | /* A/D D/A DI DO CT */ |
c73190fa | 93 | DT9812_DEVID_DT9812_10, /* 8 2 8 8 1 +/- 10V */ |
0a85b6f0 | 94 | DT9812_DEVID_DT9812_2PT5, /* 8 2 8 8 1 0-2.44V */ |
c73190fa GKH |
95 | #if 0 |
96 | DT9812_DEVID_DT9813, /* 16 2 4 4 1 +/- 10V */ | |
97 | DT9812_DEVID_DT9814 /* 24 2 0 0 1 +/- 10V */ | |
98 | #endif | |
98f3c672 | 99 | }; |
c73190fa | 100 | |
98f3c672 | 101 | enum dt9812_gain { |
c73190fa GKH |
102 | DT9812_GAIN_0PT25 = 1, |
103 | DT9812_GAIN_0PT5 = 2, | |
104 | DT9812_GAIN_1 = 4, | |
105 | DT9812_GAIN_2 = 8, | |
106 | DT9812_GAIN_4 = 16, | |
107 | DT9812_GAIN_8 = 32, | |
108 | DT9812_GAIN_16 = 64, | |
98f3c672 | 109 | }; |
c73190fa | 110 | |
98f3c672 | 111 | enum { |
c73190fa GKH |
112 | DT9812_LEAST_USB_FIRMWARE_CMD_CODE = 0, |
113 | /* Write Flash memory */ | |
114 | DT9812_W_FLASH_DATA = 0, | |
115 | /* Read Flash memory misc config info */ | |
116 | DT9812_R_FLASH_DATA = 1, | |
117 | ||
118 | /* | |
119 | * Register read/write commands for processor | |
120 | */ | |
121 | ||
122 | /* Read a single byte of USB memory */ | |
123 | DT9812_R_SINGLE_BYTE_REG = 2, | |
124 | /* Write a single byte of USB memory */ | |
125 | DT9812_W_SINGLE_BYTE_REG = 3, | |
126 | /* Multiple Reads of USB memory */ | |
127 | DT9812_R_MULTI_BYTE_REG = 4, | |
128 | /* Multiple Writes of USB memory */ | |
129 | DT9812_W_MULTI_BYTE_REG = 5, | |
130 | /* Read, (AND) with mask, OR value, then write (single) */ | |
131 | DT9812_RMW_SINGLE_BYTE_REG = 6, | |
132 | /* Read, (AND) with mask, OR value, then write (multiple) */ | |
133 | DT9812_RMW_MULTI_BYTE_REG = 7, | |
134 | ||
135 | /* | |
136 | * Register read/write commands for SMBus | |
137 | */ | |
138 | ||
139 | /* Read a single byte of SMBus */ | |
140 | DT9812_R_SINGLE_BYTE_SMBUS = 8, | |
141 | /* Write a single byte of SMBus */ | |
142 | DT9812_W_SINGLE_BYTE_SMBUS = 9, | |
143 | /* Multiple Reads of SMBus */ | |
144 | DT9812_R_MULTI_BYTE_SMBUS = 10, | |
145 | /* Multiple Writes of SMBus */ | |
146 | DT9812_W_MULTI_BYTE_SMBUS = 11, | |
147 | ||
148 | /* | |
149 | * Register read/write commands for a device | |
150 | */ | |
151 | ||
152 | /* Read a single byte of a device */ | |
153 | DT9812_R_SINGLE_BYTE_DEV = 12, | |
154 | /* Write a single byte of a device */ | |
155 | DT9812_W_SINGLE_BYTE_DEV = 13, | |
156 | /* Multiple Reads of a device */ | |
157 | DT9812_R_MULTI_BYTE_DEV = 14, | |
158 | /* Multiple Writes of a device */ | |
159 | DT9812_W_MULTI_BYTE_DEV = 15, | |
160 | ||
161 | /* Not sure if we'll need this */ | |
162 | DT9812_W_DAC_THRESHOLD = 16, | |
163 | ||
164 | /* Set interrupt on change mask */ | |
165 | DT9812_W_INT_ON_CHANGE_MASK = 17, | |
166 | ||
167 | /* Write (or Clear) the CGL for the ADC */ | |
168 | DT9812_W_CGL = 18, | |
169 | /* Multiple Reads of USB memory */ | |
170 | DT9812_R_MULTI_BYTE_USBMEM = 19, | |
171 | /* Multiple Writes to USB memory */ | |
172 | DT9812_W_MULTI_BYTE_USBMEM = 20, | |
173 | ||
174 | /* Issue a start command to a given subsystem */ | |
175 | DT9812_START_SUBSYSTEM = 21, | |
176 | /* Issue a stop command to a given subsystem */ | |
177 | DT9812_STOP_SUBSYSTEM = 22, | |
178 | ||
179 | /* calibrate the board using CAL_POT_CMD */ | |
180 | DT9812_CALIBRATE_POT = 23, | |
181 | /* set the DAC FIFO size */ | |
182 | DT9812_W_DAC_FIFO_SIZE = 24, | |
183 | /* Write or Clear the CGL for the DAC */ | |
184 | DT9812_W_CGL_DAC = 25, | |
185 | /* Read a single value from a subsystem */ | |
186 | DT9812_R_SINGLE_VALUE_CMD = 26, | |
187 | /* Write a single value to a subsystem */ | |
188 | DT9812_W_SINGLE_VALUE_CMD = 27, | |
189 | /* Valid DT9812_USB_FIRMWARE_CMD_CODE's will be less than this number */ | |
190 | DT9812_MAX_USB_FIRMWARE_CMD_CODE, | |
98f3c672 | 191 | }; |
c73190fa | 192 | |
98f3c672 | 193 | struct dt9812_flash_data { |
c73190fa GKH |
194 | u16 numbytes; |
195 | u16 address; | |
98f3c672 | 196 | }; |
c73190fa GKH |
197 | |
198 | #define DT9812_MAX_NUM_MULTI_BYTE_RDS \ | |
199 | ((DT9812_MAX_WRITE_CMD_PIPE_SIZE - 4 - 1) / sizeof(u8)) | |
200 | ||
98f3c672 | 201 | struct dt9812_read_multi { |
c73190fa GKH |
202 | u8 count; |
203 | u8 address[DT9812_MAX_NUM_MULTI_BYTE_RDS]; | |
98f3c672 | 204 | }; |
c73190fa | 205 | |
98f3c672 | 206 | struct dt9812_write_byte { |
c73190fa GKH |
207 | u8 address; |
208 | u8 value; | |
98f3c672 | 209 | }; |
c73190fa GKH |
210 | |
211 | #define DT9812_MAX_NUM_MULTI_BYTE_WRTS \ | |
98f3c672 GKH |
212 | ((DT9812_MAX_WRITE_CMD_PIPE_SIZE - 4 - 1) / \ |
213 | sizeof(struct dt9812_write_byte)) | |
c73190fa | 214 | |
98f3c672 | 215 | struct dt9812_write_multi { |
c73190fa | 216 | u8 count; |
98f3c672 GKH |
217 | struct dt9812_write_byte write[DT9812_MAX_NUM_MULTI_BYTE_WRTS]; |
218 | }; | |
c73190fa | 219 | |
98f3c672 | 220 | struct dt9812_rmw_byte { |
c73190fa GKH |
221 | u8 address; |
222 | u8 and_mask; | |
223 | u8 or_value; | |
98f3c672 | 224 | }; |
c73190fa GKH |
225 | |
226 | #define DT9812_MAX_NUM_MULTI_BYTE_RMWS \ | |
98f3c672 | 227 | ((DT9812_MAX_WRITE_CMD_PIPE_SIZE - 4 - 1) / sizeof(struct dt9812_rmw_byte)) |
c73190fa | 228 | |
98f3c672 | 229 | struct dt9812_rmw_multi { |
c73190fa | 230 | u8 count; |
98f3c672 GKH |
231 | struct dt9812_rmw_byte rmw[DT9812_MAX_NUM_MULTI_BYTE_RMWS]; |
232 | }; | |
c73190fa | 233 | |
98f3c672 | 234 | struct dt9812_usb_cmd { |
c73190fa GKH |
235 | u32 cmd; |
236 | union { | |
98f3c672 GKH |
237 | struct dt9812_flash_data flash_data_info; |
238 | struct dt9812_read_multi read_multi_info; | |
239 | struct dt9812_write_multi write_multi_info; | |
240 | struct dt9812_rmw_multi rmw_multi_info; | |
c73190fa GKH |
241 | } u; |
242 | #if 0 | |
243 | WRITE_BYTE_INFO WriteByteInfo; | |
244 | READ_BYTE_INFO ReadByteInfo; | |
245 | WRITE_MULTI_INFO WriteMultiInfo; | |
246 | READ_MULTI_INFO ReadMultiInfo; | |
247 | RMW_BYTE_INFO RMWByteInfo; | |
248 | RMW_MULTI_INFO RMWMultiInfo; | |
249 | DAC_THRESHOLD_INFO DacThresholdInfo; | |
250 | INT_ON_CHANGE_MASK_INFO IntOnChangeMaskInfo; | |
251 | CGL_INFO CglInfo; | |
252 | SUBSYSTEM_INFO SubsystemInfo; | |
253 | CAL_POT_CMD CalPotCmd; | |
254 | WRITE_DEV_BYTE_INFO WriteDevByteInfo; | |
255 | READ_DEV_BYTE_INFO ReadDevByteInfo; | |
256 | WRITE_DEV_MULTI_INFO WriteDevMultiInfo; | |
257 | READ_DEV_MULTI_INFO ReadDevMultiInfo; | |
258 | READ_SINGLE_VALUE_INFO ReadSingleValueInfo; | |
259 | WRITE_SINGLE_VALUE_INFO WriteSingleValueInfo; | |
260 | #endif | |
98f3c672 | 261 | }; |
63274cd7 | 262 | |
f52a8af7 | 263 | #define DT9812_NUM_SLOTS 16 |
63274cd7 | 264 | |
45f4d024 | 265 | static DEFINE_SEMAPHORE(dt9812_mutex); |
63274cd7 | 266 | |
a457732b | 267 | static const struct usb_device_id dt9812_table[] = { |
63274cd7 | 268 | {USB_DEVICE(0x0867, 0x9812)}, |
0a85b6f0 | 269 | {} /* Terminating entry */ |
63274cd7 AB |
270 | }; |
271 | ||
272 | MODULE_DEVICE_TABLE(usb, dt9812_table); | |
273 | ||
98f3c672 | 274 | struct usb_dt9812 { |
63274cd7 AB |
275 | struct slot_dt9812 *slot; |
276 | struct usb_device *udev; | |
277 | struct usb_interface *interface; | |
278 | u16 vendor; | |
279 | u16 product; | |
280 | u16 device; | |
281 | u32 serial; | |
282 | struct { | |
283 | __u8 addr; | |
284 | size_t size; | |
285 | } message_pipe, command_write, command_read, write_stream, read_stream; | |
286 | struct kref kref; | |
287 | u16 analog_out_shadow[2]; | |
288 | u8 digital_out_shadow; | |
98f3c672 | 289 | }; |
63274cd7 | 290 | |
98f3c672 | 291 | struct comedi_dt9812 { |
63274cd7 AB |
292 | struct slot_dt9812 *slot; |
293 | u32 serial; | |
98f3c672 | 294 | }; |
63274cd7 | 295 | |
98f3c672 | 296 | struct slot_dt9812 { |
63274cd7 AB |
297 | struct semaphore mutex; |
298 | u32 serial; | |
98f3c672 GKH |
299 | struct usb_dt9812 *usb; |
300 | struct comedi_dt9812 *comedi; | |
301 | }; | |
63274cd7 | 302 | |
9ced1de6 | 303 | static const struct comedi_lrange dt9812_10_ain_range = { 1, { |
0a85b6f0 MT |
304 | BIP_RANGE(10), |
305 | } | |
63274cd7 AB |
306 | }; |
307 | ||
9ced1de6 | 308 | static const struct comedi_lrange dt9812_2pt5_ain_range = { 1, { |
0a85b6f0 MT |
309 | UNI_RANGE(2.5), |
310 | } | |
63274cd7 AB |
311 | }; |
312 | ||
9ced1de6 | 313 | static const struct comedi_lrange dt9812_10_aout_range = { 1, { |
0a85b6f0 MT |
314 | BIP_RANGE(10), |
315 | } | |
63274cd7 AB |
316 | }; |
317 | ||
9ced1de6 | 318 | static const struct comedi_lrange dt9812_2pt5_aout_range = { 1, { |
0a85b6f0 MT |
319 | UNI_RANGE(2.5), |
320 | } | |
63274cd7 AB |
321 | }; |
322 | ||
98f3c672 | 323 | static struct slot_dt9812 dt9812[DT9812_NUM_SLOTS]; |
63274cd7 | 324 | |
f52a8af7 | 325 | /* Useful shorthand access to private data */ |
98f3c672 | 326 | #define devpriv ((struct comedi_dt9812 *)dev->private) |
63274cd7 | 327 | |
98f3c672 | 328 | static inline struct usb_dt9812 *to_dt9812_dev(struct kref *d) |
63274cd7 | 329 | { |
98f3c672 | 330 | return container_of(d, struct usb_dt9812, kref); |
63274cd7 AB |
331 | } |
332 | ||
333 | static void dt9812_delete(struct kref *kref) | |
334 | { | |
98f3c672 | 335 | struct usb_dt9812 *dev = to_dt9812_dev(kref); |
63274cd7 AB |
336 | |
337 | usb_put_dev(dev->udev); | |
338 | kfree(dev); | |
339 | } | |
340 | ||
98f3c672 | 341 | static int dt9812_read_info(struct usb_dt9812 *dev, int offset, void *buf, |
f52a8af7 | 342 | size_t buf_size) |
63274cd7 | 343 | { |
98f3c672 | 344 | struct dt9812_usb_cmd cmd; |
63274cd7 AB |
345 | int count, retval; |
346 | ||
347 | cmd.cmd = cpu_to_le32(DT9812_R_FLASH_DATA); | |
348 | cmd.u.flash_data_info.address = | |
0a85b6f0 | 349 | cpu_to_le16(DT9812_DIAGS_BOARD_INFO_ADDR + offset); |
63274cd7 AB |
350 | cmd.u.flash_data_info.numbytes = cpu_to_le16(buf_size); |
351 | ||
f52a8af7 | 352 | /* DT9812 only responds to 32 byte writes!! */ |
63274cd7 | 353 | count = 32; |
f52a8af7 GKH |
354 | retval = usb_bulk_msg(dev->udev, |
355 | usb_sndbulkpipe(dev->udev, | |
356 | dev->command_write.addr), | |
357 | &cmd, 32, &count, HZ * 1); | |
358 | if (retval) | |
359 | return retval; | |
360 | retval = usb_bulk_msg(dev->udev, | |
361 | usb_rcvbulkpipe(dev->udev, | |
362 | dev->command_read.addr), | |
363 | buf, buf_size, &count, HZ * 1); | |
63274cd7 AB |
364 | return retval; |
365 | } | |
366 | ||
98f3c672 | 367 | static int dt9812_read_multiple_registers(struct usb_dt9812 *dev, int reg_count, |
0a85b6f0 | 368 | u8 * address, u8 * value) |
63274cd7 | 369 | { |
98f3c672 | 370 | struct dt9812_usb_cmd cmd; |
63274cd7 AB |
371 | int i, count, retval; |
372 | ||
373 | cmd.cmd = cpu_to_le32(DT9812_R_MULTI_BYTE_REG); | |
374 | cmd.u.read_multi_info.count = reg_count; | |
f52a8af7 | 375 | for (i = 0; i < reg_count; i++) |
63274cd7 | 376 | cmd.u.read_multi_info.address[i] = address[i]; |
f52a8af7 GKH |
377 | |
378 | /* DT9812 only responds to 32 byte writes!! */ | |
63274cd7 | 379 | count = 32; |
f52a8af7 GKH |
380 | retval = usb_bulk_msg(dev->udev, |
381 | usb_sndbulkpipe(dev->udev, | |
382 | dev->command_write.addr), | |
383 | &cmd, 32, &count, HZ * 1); | |
384 | if (retval) | |
385 | return retval; | |
386 | retval = usb_bulk_msg(dev->udev, | |
387 | usb_rcvbulkpipe(dev->udev, | |
388 | dev->command_read.addr), | |
389 | value, reg_count, &count, HZ * 1); | |
63274cd7 AB |
390 | return retval; |
391 | } | |
392 | ||
98f3c672 | 393 | static int dt9812_write_multiple_registers(struct usb_dt9812 *dev, |
0a85b6f0 MT |
394 | int reg_count, u8 * address, |
395 | u8 * value) | |
63274cd7 | 396 | { |
98f3c672 | 397 | struct dt9812_usb_cmd cmd; |
63274cd7 AB |
398 | int i, count, retval; |
399 | ||
400 | cmd.cmd = cpu_to_le32(DT9812_W_MULTI_BYTE_REG); | |
401 | cmd.u.read_multi_info.count = reg_count; | |
402 | for (i = 0; i < reg_count; i++) { | |
403 | cmd.u.write_multi_info.write[i].address = address[i]; | |
404 | cmd.u.write_multi_info.write[i].value = value[i]; | |
405 | } | |
f52a8af7 GKH |
406 | /* DT9812 only responds to 32 byte writes!! */ |
407 | retval = usb_bulk_msg(dev->udev, | |
408 | usb_sndbulkpipe(dev->udev, | |
409 | dev->command_write.addr), | |
410 | &cmd, 32, &count, HZ * 1); | |
63274cd7 AB |
411 | return retval; |
412 | } | |
413 | ||
98f3c672 GKH |
414 | static int dt9812_rmw_multiple_registers(struct usb_dt9812 *dev, int reg_count, |
415 | struct dt9812_rmw_byte *rmw) | |
63274cd7 | 416 | { |
98f3c672 | 417 | struct dt9812_usb_cmd cmd; |
63274cd7 AB |
418 | int i, count, retval; |
419 | ||
420 | cmd.cmd = cpu_to_le32(DT9812_RMW_MULTI_BYTE_REG); | |
421 | cmd.u.rmw_multi_info.count = reg_count; | |
f52a8af7 | 422 | for (i = 0; i < reg_count; i++) |
63274cd7 | 423 | cmd.u.rmw_multi_info.rmw[i] = rmw[i]; |
f52a8af7 GKH |
424 | |
425 | /* DT9812 only responds to 32 byte writes!! */ | |
426 | retval = usb_bulk_msg(dev->udev, | |
427 | usb_sndbulkpipe(dev->udev, | |
428 | dev->command_write.addr), | |
429 | &cmd, 32, &count, HZ * 1); | |
63274cd7 AB |
430 | return retval; |
431 | } | |
432 | ||
0a85b6f0 | 433 | static int dt9812_digital_in(struct slot_dt9812 *slot, u8 * bits) |
63274cd7 AB |
434 | { |
435 | int result = -ENODEV; | |
436 | ||
437 | down(&slot->mutex); | |
438 | if (slot->usb) { | |
439 | u8 reg[2] = { F020_SFR_P3, F020_SFR_P1 }; | |
440 | u8 value[2]; | |
441 | ||
442 | result = dt9812_read_multiple_registers(slot->usb, 2, reg, | |
f52a8af7 | 443 | value); |
63274cd7 | 444 | if (result == 0) { |
f52a8af7 GKH |
445 | /* |
446 | * bits 0-6 in F020_SFR_P3 are bits 0-6 in the digital | |
447 | * input port bit 3 in F020_SFR_P1 is bit 7 in the | |
448 | * digital input port | |
449 | */ | |
63274cd7 | 450 | *bits = (value[0] & 0x7f) | ((value[1] & 0x08) << 4); |
f52a8af7 | 451 | /* printk("%2.2x, %2.2x -> %2.2x\n", |
0a85b6f0 | 452 | value[0], value[1], *bits); */ |
63274cd7 AB |
453 | } |
454 | } | |
455 | up(&slot->mutex); | |
456 | ||
457 | return result; | |
458 | } | |
459 | ||
98f3c672 | 460 | static int dt9812_digital_out(struct slot_dt9812 *slot, u8 bits) |
63274cd7 AB |
461 | { |
462 | int result = -ENODEV; | |
463 | ||
464 | down(&slot->mutex); | |
465 | if (slot->usb) { | |
466 | u8 reg[1]; | |
467 | u8 value[1]; | |
468 | ||
469 | reg[0] = F020_SFR_P2; | |
470 | value[0] = bits; | |
471 | result = dt9812_write_multiple_registers(slot->usb, 1, reg, | |
f52a8af7 | 472 | value); |
63274cd7 AB |
473 | slot->usb->digital_out_shadow = bits; |
474 | } | |
475 | up(&slot->mutex); | |
476 | return result; | |
477 | } | |
478 | ||
0a85b6f0 | 479 | static int dt9812_digital_out_shadow(struct slot_dt9812 *slot, u8 * bits) |
63274cd7 AB |
480 | { |
481 | int result = -ENODEV; | |
482 | ||
483 | down(&slot->mutex); | |
484 | if (slot->usb) { | |
485 | *bits = slot->usb->digital_out_shadow; | |
486 | result = 0; | |
487 | } | |
488 | up(&slot->mutex); | |
489 | return result; | |
490 | } | |
491 | ||
98f3c672 GKH |
492 | static void dt9812_configure_mux(struct usb_dt9812 *dev, |
493 | struct dt9812_rmw_byte *rmw, int channel) | |
63274cd7 AB |
494 | { |
495 | if (dev->device == DT9812_DEVID_DT9812_10) { | |
f52a8af7 | 496 | /* In the DT9812/10V MUX is selected by P1.5-7 */ |
63274cd7 AB |
497 | rmw->address = F020_SFR_P1; |
498 | rmw->and_mask = 0xe0; | |
499 | rmw->or_value = channel << 5; | |
500 | } else { | |
f52a8af7 | 501 | /* In the DT9812/2.5V, internal mux is selected by bits 0:2 */ |
63274cd7 AB |
502 | rmw->address = F020_SFR_AMX0SL; |
503 | rmw->and_mask = 0xff; | |
504 | rmw->or_value = channel & 0x07; | |
505 | } | |
506 | } | |
507 | ||
98f3c672 GKH |
508 | static void dt9812_configure_gain(struct usb_dt9812 *dev, |
509 | struct dt9812_rmw_byte *rmw, | |
510 | enum dt9812_gain gain) | |
63274cd7 AB |
511 | { |
512 | if (dev->device == DT9812_DEVID_DT9812_10) { | |
f52a8af7 | 513 | /* In the DT9812/10V, there is an external gain of 0.5 */ |
63274cd7 AB |
514 | gain <<= 1; |
515 | } | |
516 | ||
517 | rmw->address = F020_SFR_ADC0CF; | |
f52a8af7 | 518 | rmw->and_mask = F020_MASK_ADC0CF_AMP0GN2 | |
0a85b6f0 | 519 | F020_MASK_ADC0CF_AMP0GN1 | F020_MASK_ADC0CF_AMP0GN0; |
63274cd7 | 520 | switch (gain) { |
f52a8af7 GKH |
521 | /* |
522 | * 000 -> Gain = 1 | |
523 | * 001 -> Gain = 2 | |
524 | * 010 -> Gain = 4 | |
525 | * 011 -> Gain = 8 | |
526 | * 10x -> Gain = 16 | |
527 | * 11x -> Gain = 0.5 | |
528 | */ | |
529 | case DT9812_GAIN_0PT5: | |
cba2c993 | 530 | rmw->or_value = F020_MASK_ADC0CF_AMP0GN2 | |
0a85b6f0 | 531 | F020_MASK_ADC0CF_AMP0GN1; |
63274cd7 | 532 | break; |
f52a8af7 GKH |
533 | case DT9812_GAIN_1: |
534 | rmw->or_value = 0x00; | |
63274cd7 | 535 | break; |
f52a8af7 GKH |
536 | case DT9812_GAIN_2: |
537 | rmw->or_value = F020_MASK_ADC0CF_AMP0GN0; | |
63274cd7 | 538 | break; |
f52a8af7 GKH |
539 | case DT9812_GAIN_4: |
540 | rmw->or_value = F020_MASK_ADC0CF_AMP0GN1; | |
63274cd7 | 541 | break; |
f52a8af7 | 542 | case DT9812_GAIN_8: |
cba2c993 | 543 | rmw->or_value = F020_MASK_ADC0CF_AMP0GN1 | |
0a85b6f0 | 544 | F020_MASK_ADC0CF_AMP0GN0; |
63274cd7 | 545 | break; |
f52a8af7 GKH |
546 | case DT9812_GAIN_16: |
547 | rmw->or_value = F020_MASK_ADC0CF_AMP0GN2; | |
63274cd7 | 548 | break; |
f52a8af7 GKH |
549 | default: |
550 | err("Illegal gain %d\n", gain); | |
551 | ||
63274cd7 AB |
552 | } |
553 | } | |
554 | ||
0a85b6f0 | 555 | static int dt9812_analog_in(struct slot_dt9812 *slot, int channel, u16 * value, |
98f3c672 | 556 | enum dt9812_gain gain) |
63274cd7 | 557 | { |
98f3c672 | 558 | struct dt9812_rmw_byte rmw[3]; |
f52a8af7 GKH |
559 | u8 reg[3] = { |
560 | F020_SFR_ADC0CN, | |
561 | F020_SFR_ADC0H, | |
562 | F020_SFR_ADC0L | |
563 | }; | |
564 | u8 val[3]; | |
63274cd7 AB |
565 | int result = -ENODEV; |
566 | ||
567 | down(&slot->mutex); | |
f52a8af7 GKH |
568 | if (!slot->usb) |
569 | goto exit; | |
570 | ||
571 | /* 1 select the gain */ | |
572 | dt9812_configure_gain(slot->usb, &rmw[0], gain); | |
573 | ||
574 | /* 2 set the MUX to select the channel */ | |
575 | dt9812_configure_mux(slot->usb, &rmw[1], channel); | |
576 | ||
577 | /* 3 start conversion */ | |
578 | rmw[2].address = F020_SFR_ADC0CN; | |
579 | rmw[2].and_mask = 0xff; | |
580 | rmw[2].or_value = F020_MASK_ADC0CN_AD0EN | F020_MASK_ADC0CN_AD0BUSY; | |
581 | ||
582 | result = dt9812_rmw_multiple_registers(slot->usb, 3, rmw); | |
583 | if (result) | |
584 | goto exit; | |
585 | ||
586 | /* read the status and ADC */ | |
587 | result = dt9812_read_multiple_registers(slot->usb, 3, reg, val); | |
588 | if (result) | |
589 | goto exit; | |
590 | /* | |
591 | * An ADC conversion takes 16 SAR clocks cycles, i.e. about 9us. | |
592 | * Therefore, between the instant that AD0BUSY was set via | |
593 | * dt9812_rmw_multiple_registers and the read of AD0BUSY via | |
594 | * dt9812_read_multiple_registers, the conversion should be complete | |
595 | * since these two operations require two USB transactions each taking | |
596 | * at least a millisecond to complete. However, lets make sure that | |
597 | * conversion is finished. | |
598 | */ | |
599 | if ((val[0] & (F020_MASK_ADC0CN_AD0INT | F020_MASK_ADC0CN_AD0BUSY)) == | |
600 | F020_MASK_ADC0CN_AD0INT) { | |
601 | switch (slot->usb->device) { | |
602 | case DT9812_DEVID_DT9812_10: | |
603 | /* | |
604 | * For DT9812-10V the personality module set the | |
605 | * encoding to 2's complement. Hence, convert it before | |
606 | * returning it | |
607 | */ | |
608 | *value = ((val[1] << 8) | val[2]) + 0x800; | |
609 | break; | |
610 | case DT9812_DEVID_DT9812_2PT5: | |
611 | *value = (val[1] << 8) | val[2]; | |
612 | break; | |
63274cd7 AB |
613 | } |
614 | } | |
f52a8af7 GKH |
615 | |
616 | exit: | |
63274cd7 AB |
617 | up(&slot->mutex); |
618 | return result; | |
619 | } | |
620 | ||
98f3c672 | 621 | static int dt9812_analog_out_shadow(struct slot_dt9812 *slot, int channel, |
0a85b6f0 | 622 | u16 * value) |
63274cd7 AB |
623 | { |
624 | int result = -ENODEV; | |
625 | ||
626 | down(&slot->mutex); | |
627 | if (slot->usb) { | |
628 | *value = slot->usb->analog_out_shadow[channel]; | |
629 | result = 0; | |
630 | } | |
631 | up(&slot->mutex); | |
632 | ||
633 | return result; | |
634 | } | |
635 | ||
98f3c672 | 636 | static int dt9812_analog_out(struct slot_dt9812 *slot, int channel, u16 value) |
63274cd7 AB |
637 | { |
638 | int result = -ENODEV; | |
639 | ||
640 | down(&slot->mutex); | |
641 | if (slot->usb) { | |
98f3c672 | 642 | struct dt9812_rmw_byte rmw[3]; |
63274cd7 AB |
643 | |
644 | switch (channel) { | |
f52a8af7 GKH |
645 | case 0: |
646 | /* 1. Set DAC mode */ | |
647 | rmw[0].address = F020_SFR_DAC0CN; | |
648 | rmw[0].and_mask = 0xff; | |
649 | rmw[0].or_value = F020_MASK_DACxCN_DACxEN; | |
650 | ||
651 | /* 2 load low byte of DAC value first */ | |
652 | rmw[1].address = F020_SFR_DAC0L; | |
653 | rmw[1].and_mask = 0xff; | |
654 | rmw[1].or_value = value & 0xff; | |
655 | ||
656 | /* 3 load high byte of DAC value next to latch the | |
657 | 12-bit value */ | |
658 | rmw[2].address = F020_SFR_DAC0H; | |
659 | rmw[2].and_mask = 0xff; | |
660 | rmw[2].or_value = (value >> 8) & 0xf; | |
63274cd7 | 661 | break; |
f52a8af7 GKH |
662 | |
663 | case 1: | |
664 | /* 1. Set DAC mode */ | |
665 | rmw[0].address = F020_SFR_DAC1CN; | |
666 | rmw[0].and_mask = 0xff; | |
667 | rmw[0].or_value = F020_MASK_DACxCN_DACxEN; | |
668 | ||
669 | /* 2 load low byte of DAC value first */ | |
670 | rmw[1].address = F020_SFR_DAC1L; | |
671 | rmw[1].and_mask = 0xff; | |
672 | rmw[1].or_value = value & 0xff; | |
673 | ||
674 | /* 3 load high byte of DAC value next to latch the | |
675 | 12-bit value */ | |
676 | rmw[2].address = F020_SFR_DAC1H; | |
677 | rmw[2].and_mask = 0xff; | |
678 | rmw[2].or_value = (value >> 8) & 0xf; | |
63274cd7 AB |
679 | break; |
680 | } | |
681 | result = dt9812_rmw_multiple_registers(slot->usb, 3, rmw); | |
682 | slot->usb->analog_out_shadow[channel] = value; | |
683 | } | |
684 | up(&slot->mutex); | |
685 | ||
686 | return result; | |
687 | } | |
688 | ||
689 | /* | |
690 | * USB framework functions | |
691 | */ | |
692 | ||
693 | static int dt9812_probe(struct usb_interface *interface, | |
f52a8af7 | 694 | const struct usb_device_id *id) |
63274cd7 AB |
695 | { |
696 | int retval = -ENOMEM; | |
98f3c672 | 697 | struct usb_dt9812 *dev = NULL; |
63274cd7 AB |
698 | struct usb_host_interface *iface_desc; |
699 | struct usb_endpoint_descriptor *endpoint; | |
700 | int i; | |
701 | u8 fw; | |
702 | ||
f52a8af7 | 703 | /* allocate memory for our device state and initialize it */ |
63274cd7 AB |
704 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
705 | if (dev == NULL) { | |
f52a8af7 | 706 | dev_err(&interface->dev, "Out of memory\n"); |
63274cd7 AB |
707 | goto error; |
708 | } | |
709 | kref_init(&dev->kref); | |
710 | ||
711 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | |
712 | dev->interface = interface; | |
713 | ||
f52a8af7 | 714 | /* Check endpoints */ |
63274cd7 AB |
715 | iface_desc = interface->cur_altsetting; |
716 | ||
717 | if (iface_desc->desc.bNumEndpoints != 5) { | |
718 | err("Wrong number of endpints."); | |
719 | retval = -ENODEV; | |
720 | goto error; | |
721 | } | |
722 | ||
723 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
724 | int direction = -1; | |
725 | endpoint = &iface_desc->endpoint[i].desc; | |
726 | switch (i) { | |
f52a8af7 GKH |
727 | case 0: |
728 | direction = USB_DIR_IN; | |
729 | dev->message_pipe.addr = endpoint->bEndpointAddress; | |
730 | dev->message_pipe.size = | |
0a85b6f0 | 731 | le16_to_cpu(endpoint->wMaxPacketSize); |
f52a8af7 | 732 | |
63274cd7 | 733 | break; |
f52a8af7 GKH |
734 | case 1: |
735 | direction = USB_DIR_OUT; | |
736 | dev->command_write.addr = endpoint->bEndpointAddress; | |
737 | dev->command_write.size = | |
0a85b6f0 | 738 | le16_to_cpu(endpoint->wMaxPacketSize); |
63274cd7 | 739 | break; |
f52a8af7 GKH |
740 | case 2: |
741 | direction = USB_DIR_IN; | |
742 | dev->command_read.addr = endpoint->bEndpointAddress; | |
743 | dev->command_read.size = | |
0a85b6f0 | 744 | le16_to_cpu(endpoint->wMaxPacketSize); |
63274cd7 | 745 | break; |
f52a8af7 GKH |
746 | case 3: |
747 | direction = USB_DIR_OUT; | |
748 | dev->write_stream.addr = endpoint->bEndpointAddress; | |
749 | dev->write_stream.size = | |
0a85b6f0 | 750 | le16_to_cpu(endpoint->wMaxPacketSize); |
63274cd7 | 751 | break; |
f52a8af7 GKH |
752 | case 4: |
753 | direction = USB_DIR_IN; | |
754 | dev->read_stream.addr = endpoint->bEndpointAddress; | |
755 | dev->read_stream.size = | |
0a85b6f0 | 756 | le16_to_cpu(endpoint->wMaxPacketSize); |
63274cd7 AB |
757 | break; |
758 | } | |
759 | if ((endpoint->bEndpointAddress & USB_DIR_IN) != direction) { | |
f52a8af7 GKH |
760 | dev_err(&interface->dev, |
761 | "Endpoint has wrong direction.\n"); | |
63274cd7 AB |
762 | retval = -ENODEV; |
763 | goto error; | |
764 | } | |
765 | } | |
766 | if (dt9812_read_info(dev, 0, &fw, sizeof(fw)) != 0) { | |
f52a8af7 GKH |
767 | /* |
768 | * Seems like a configuration reset is necessary if driver is | |
769 | * reloaded while device is attached | |
770 | */ | |
63274cd7 AB |
771 | usb_reset_configuration(dev->udev); |
772 | for (i = 0; i < 10; i++) { | |
773 | retval = dt9812_read_info(dev, 1, &fw, sizeof(fw)); | |
774 | if (retval == 0) { | |
f52a8af7 | 775 | dev_info(&interface->dev, |
25985edc | 776 | "usb_reset_configuration succeeded " |
f52a8af7 | 777 | "after %d iterations\n", i); |
63274cd7 AB |
778 | break; |
779 | } | |
780 | } | |
781 | } | |
782 | ||
783 | if (dt9812_read_info(dev, 1, &dev->vendor, sizeof(dev->vendor)) != 0) { | |
784 | err("Failed to read vendor."); | |
785 | retval = -ENODEV; | |
786 | goto error; | |
787 | } | |
0a85b6f0 | 788 | if (dt9812_read_info(dev, 3, &dev->product, sizeof(dev->product)) != 0) { |
63274cd7 AB |
789 | err("Failed to read product."); |
790 | retval = -ENODEV; | |
791 | goto error; | |
792 | } | |
793 | if (dt9812_read_info(dev, 5, &dev->device, sizeof(dev->device)) != 0) { | |
794 | err("Failed to read device."); | |
795 | retval = -ENODEV; | |
796 | goto error; | |
797 | } | |
798 | if (dt9812_read_info(dev, 7, &dev->serial, sizeof(dev->serial)) != 0) { | |
799 | err("Failed to read serial."); | |
800 | retval = -ENODEV; | |
801 | goto error; | |
802 | } | |
803 | ||
804 | dev->vendor = le16_to_cpu(dev->vendor); | |
805 | dev->product = le16_to_cpu(dev->product); | |
806 | dev->device = le16_to_cpu(dev->device); | |
807 | dev->serial = le32_to_cpu(dev->serial); | |
808 | switch (dev->device) { | |
f52a8af7 GKH |
809 | case DT9812_DEVID_DT9812_10: |
810 | dev->analog_out_shadow[0] = 0x0800; | |
811 | dev->analog_out_shadow[1] = 0x800; | |
63274cd7 | 812 | break; |
f52a8af7 GKH |
813 | case DT9812_DEVID_DT9812_2PT5: |
814 | dev->analog_out_shadow[0] = 0x0000; | |
815 | dev->analog_out_shadow[1] = 0x0000; | |
63274cd7 AB |
816 | break; |
817 | } | |
818 | dev->digital_out_shadow = 0; | |
819 | ||
f52a8af7 | 820 | /* save our data pointer in this interface device */ |
63274cd7 AB |
821 | usb_set_intfdata(interface, dev); |
822 | ||
f52a8af7 | 823 | /* let the user know what node this device is now attached to */ |
63274cd7 AB |
824 | dev_info(&interface->dev, "USB DT9812 (%4.4x.%4.4x.%4.4x) #0x%8.8x\n", |
825 | dev->vendor, dev->product, dev->device, dev->serial); | |
826 | ||
827 | down(&dt9812_mutex); | |
828 | { | |
f52a8af7 | 829 | /* Find a slot for the USB device */ |
98f3c672 GKH |
830 | struct slot_dt9812 *first = NULL; |
831 | struct slot_dt9812 *best = NULL; | |
63274cd7 AB |
832 | |
833 | for (i = 0; i < DT9812_NUM_SLOTS; i++) { | |
f52a8af7 | 834 | if (!first && !dt9812[i].usb && dt9812[i].serial == 0) |
63274cd7 | 835 | first = &dt9812[i]; |
f52a8af7 | 836 | if (!best && dt9812[i].serial == dev->serial) |
63274cd7 | 837 | best = &dt9812[i]; |
63274cd7 AB |
838 | } |
839 | ||
f52a8af7 | 840 | if (!best) |
63274cd7 | 841 | best = first; |
63274cd7 AB |
842 | |
843 | if (best) { | |
844 | down(&best->mutex); | |
845 | best->usb = dev; | |
846 | dev->slot = best; | |
847 | up(&best->mutex); | |
848 | } | |
849 | } | |
850 | up(&dt9812_mutex); | |
851 | ||
852 | return 0; | |
853 | ||
f52a8af7 GKH |
854 | error: |
855 | if (dev) | |
63274cd7 | 856 | kref_put(&dev->kref, dt9812_delete); |
63274cd7 AB |
857 | return retval; |
858 | } | |
859 | ||
860 | static void dt9812_disconnect(struct usb_interface *interface) | |
861 | { | |
98f3c672 | 862 | struct usb_dt9812 *dev; |
63274cd7 AB |
863 | int minor = interface->minor; |
864 | ||
865 | down(&dt9812_mutex); | |
866 | dev = usb_get_intfdata(interface); | |
867 | if (dev->slot) { | |
868 | down(&dev->slot->mutex); | |
869 | dev->slot->usb = NULL; | |
870 | up(&dev->slot->mutex); | |
871 | dev->slot = NULL; | |
872 | } | |
873 | usb_set_intfdata(interface, NULL); | |
874 | up(&dt9812_mutex); | |
875 | ||
876 | /* queue final destruction */ | |
877 | kref_put(&dev->kref, dt9812_delete); | |
878 | ||
879 | dev_info(&interface->dev, "USB Dt9812 #%d now disconnected\n", minor); | |
880 | } | |
881 | ||
882 | static struct usb_driver dt9812_usb_driver = { | |
63274cd7 AB |
883 | .name = "dt9812", |
884 | .probe = dt9812_probe, | |
885 | .disconnect = dt9812_disconnect, | |
886 | .id_table = dt9812_table, | |
887 | }; | |
888 | ||
889 | /* | |
890 | * Comedi functions | |
891 | */ | |
892 | ||
3c17ba07 | 893 | static int dt9812_comedi_open(struct comedi_device *dev) |
63274cd7 | 894 | { |
3c17ba07 IA |
895 | int result = -ENODEV; |
896 | ||
63274cd7 AB |
897 | down(&devpriv->slot->mutex); |
898 | if (devpriv->slot->usb) { | |
f52a8af7 | 899 | /* We have an attached device, fill in current range info */ |
34c43922 | 900 | struct comedi_subdevice *s; |
63274cd7 AB |
901 | |
902 | s = &dev->subdevices[0]; | |
903 | s->n_chan = 8; | |
904 | s->maxdata = 1; | |
905 | ||
906 | s = &dev->subdevices[1]; | |
907 | s->n_chan = 8; | |
908 | s->maxdata = 1; | |
909 | ||
910 | s = &dev->subdevices[2]; | |
911 | s->n_chan = 8; | |
912 | switch (devpriv->slot->usb->device) { | |
913 | case 0:{ | |
914 | s->maxdata = 4095; | |
915 | s->range_table = &dt9812_10_ain_range; | |
916 | } | |
917 | break; | |
918 | case 1:{ | |
919 | s->maxdata = 4095; | |
920 | s->range_table = &dt9812_2pt5_ain_range; | |
921 | } | |
922 | break; | |
923 | } | |
924 | ||
925 | s = &dev->subdevices[3]; | |
926 | s->n_chan = 2; | |
927 | switch (devpriv->slot->usb->device) { | |
928 | case 0:{ | |
929 | s->maxdata = 4095; | |
930 | s->range_table = &dt9812_10_aout_range; | |
931 | } | |
932 | break; | |
933 | case 1:{ | |
934 | s->maxdata = 4095; | |
935 | s->range_table = &dt9812_2pt5_aout_range; | |
936 | } | |
937 | break; | |
938 | } | |
3c17ba07 | 939 | result = 0; |
63274cd7 AB |
940 | } |
941 | up(&devpriv->slot->mutex); | |
3c17ba07 | 942 | return result; |
63274cd7 AB |
943 | } |
944 | ||
0a85b6f0 MT |
945 | static int dt9812_di_rinsn(struct comedi_device *dev, |
946 | struct comedi_subdevice *s, struct comedi_insn *insn, | |
947 | unsigned int *data) | |
63274cd7 AB |
948 | { |
949 | int n; | |
950 | u8 bits = 0; | |
951 | ||
952 | dt9812_digital_in(devpriv->slot, &bits); | |
f52a8af7 | 953 | for (n = 0; n < insn->n; n++) |
63274cd7 | 954 | data[n] = ((1 << insn->chanspec) & bits) != 0; |
63274cd7 AB |
955 | return n; |
956 | } | |
957 | ||
0a85b6f0 MT |
958 | static int dt9812_do_winsn(struct comedi_device *dev, |
959 | struct comedi_subdevice *s, struct comedi_insn *insn, | |
960 | unsigned int *data) | |
63274cd7 AB |
961 | { |
962 | int n; | |
963 | u8 bits = 0; | |
964 | ||
965 | dt9812_digital_out_shadow(devpriv->slot, &bits); | |
966 | for (n = 0; n < insn->n; n++) { | |
967 | u8 mask = 1 << insn->chanspec; | |
968 | ||
969 | bits &= ~mask; | |
f52a8af7 | 970 | if (data[n]) |
63274cd7 | 971 | bits |= mask; |
63274cd7 AB |
972 | } |
973 | dt9812_digital_out(devpriv->slot, bits); | |
974 | return n; | |
975 | } | |
976 | ||
0a85b6f0 MT |
977 | static int dt9812_ai_rinsn(struct comedi_device *dev, |
978 | struct comedi_subdevice *s, struct comedi_insn *insn, | |
979 | unsigned int *data) | |
63274cd7 AB |
980 | { |
981 | int n; | |
982 | ||
983 | for (n = 0; n < insn->n; n++) { | |
984 | u16 value = 0; | |
985 | ||
986 | dt9812_analog_in(devpriv->slot, insn->chanspec, &value, | |
f52a8af7 | 987 | DT9812_GAIN_1); |
63274cd7 AB |
988 | data[n] = value; |
989 | } | |
990 | return n; | |
991 | } | |
992 | ||
0a85b6f0 MT |
993 | static int dt9812_ao_rinsn(struct comedi_device *dev, |
994 | struct comedi_subdevice *s, struct comedi_insn *insn, | |
995 | unsigned int *data) | |
63274cd7 AB |
996 | { |
997 | int n; | |
f52a8af7 | 998 | u16 value; |
63274cd7 AB |
999 | |
1000 | for (n = 0; n < insn->n; n++) { | |
f52a8af7 | 1001 | value = 0; |
63274cd7 AB |
1002 | dt9812_analog_out_shadow(devpriv->slot, insn->chanspec, &value); |
1003 | data[n] = value; | |
1004 | } | |
1005 | return n; | |
1006 | } | |
1007 | ||
0a85b6f0 MT |
1008 | static int dt9812_ao_winsn(struct comedi_device *dev, |
1009 | struct comedi_subdevice *s, struct comedi_insn *insn, | |
1010 | unsigned int *data) | |
63274cd7 AB |
1011 | { |
1012 | int n; | |
1013 | ||
f52a8af7 | 1014 | for (n = 0; n < insn->n; n++) |
63274cd7 | 1015 | dt9812_analog_out(devpriv->slot, insn->chanspec, data[n]); |
63274cd7 AB |
1016 | return n; |
1017 | } | |
1018 | ||
0707bb04 | 1019 | static int dt9812_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
63274cd7 AB |
1020 | { |
1021 | int i; | |
34c43922 | 1022 | struct comedi_subdevice *s; |
63274cd7 AB |
1023 | |
1024 | dev->board_name = "dt9812"; | |
1025 | ||
98f3c672 | 1026 | if (alloc_private(dev, sizeof(struct comedi_dt9812)) < 0) |
63274cd7 | 1027 | return -ENOMEM; |
f52a8af7 GKH |
1028 | |
1029 | /* | |
1030 | * Special open routine, since USB unit may be unattached at | |
1031 | * comedi_config time, hence range can not be determined | |
1032 | */ | |
63274cd7 AB |
1033 | dev->open = dt9812_comedi_open; |
1034 | ||
1035 | devpriv->serial = it->options[0]; | |
1036 | ||
f52a8af7 GKH |
1037 | /* Allocate subdevices */ |
1038 | if (alloc_subdevices(dev, 4) < 0) | |
63274cd7 | 1039 | return -ENOMEM; |
63274cd7 AB |
1040 | |
1041 | /* digital input subdevice */ | |
1042 | s = dev->subdevices + 0; | |
1043 | s->type = COMEDI_SUBD_DI; | |
1044 | s->subdev_flags = SDF_READABLE; | |
1045 | s->n_chan = 0; | |
1046 | s->maxdata = 1; | |
1047 | s->range_table = &range_digital; | |
1048 | s->insn_read = &dt9812_di_rinsn; | |
1049 | ||
1050 | /* digital output subdevice */ | |
1051 | s = dev->subdevices + 1; | |
1052 | s->type = COMEDI_SUBD_DO; | |
1053 | s->subdev_flags = SDF_WRITEABLE; | |
1054 | s->n_chan = 0; | |
1055 | s->maxdata = 1; | |
1056 | s->range_table = &range_digital; | |
1057 | s->insn_write = &dt9812_do_winsn; | |
1058 | ||
1059 | /* analog input subdevice */ | |
1060 | s = dev->subdevices + 2; | |
1061 | s->type = COMEDI_SUBD_AI; | |
1062 | s->subdev_flags = SDF_READABLE | SDF_GROUND; | |
1063 | s->n_chan = 0; | |
1064 | s->maxdata = 1; | |
b1853a4f | 1065 | s->range_table = NULL; |
63274cd7 AB |
1066 | s->insn_read = &dt9812_ai_rinsn; |
1067 | ||
1068 | /* analog output subdevice */ | |
1069 | s = dev->subdevices + 3; | |
1070 | s->type = COMEDI_SUBD_AO; | |
1071 | s->subdev_flags = SDF_WRITEABLE; | |
1072 | s->n_chan = 0; | |
1073 | s->maxdata = 1; | |
b1853a4f | 1074 | s->range_table = NULL; |
63274cd7 AB |
1075 | s->insn_write = &dt9812_ao_winsn; |
1076 | s->insn_read = &dt9812_ao_rinsn; | |
1077 | ||
f52a8af7 GKH |
1078 | printk(KERN_INFO "comedi%d: successfully attached to dt9812.\n", |
1079 | dev->minor); | |
63274cd7 AB |
1080 | |
1081 | down(&dt9812_mutex); | |
f52a8af7 | 1082 | /* Find a slot for the comedi device */ |
63274cd7 | 1083 | { |
98f3c672 GKH |
1084 | struct slot_dt9812 *first = NULL; |
1085 | struct slot_dt9812 *best = NULL; | |
63274cd7 AB |
1086 | for (i = 0; i < DT9812_NUM_SLOTS; i++) { |
1087 | if (!first && !dt9812[i].comedi) { | |
f52a8af7 | 1088 | /* First free slot from comedi side */ |
63274cd7 AB |
1089 | first = &dt9812[i]; |
1090 | } | |
1091 | if (!best && | |
f52a8af7 GKH |
1092 | dt9812[i].usb && |
1093 | dt9812[i].usb->serial == devpriv->serial) { | |
1094 | /* We have an attaced device with matching ID */ | |
63274cd7 AB |
1095 | best = &dt9812[i]; |
1096 | } | |
1097 | } | |
f52a8af7 | 1098 | if (!best) |
63274cd7 | 1099 | best = first; |
63274cd7 AB |
1100 | if (best) { |
1101 | down(&best->mutex); | |
1102 | best->comedi = devpriv; | |
1103 | best->serial = devpriv->serial; | |
1104 | devpriv->slot = best; | |
1105 | up(&best->mutex); | |
1106 | } | |
1107 | } | |
1108 | up(&dt9812_mutex); | |
1109 | ||
1110 | return 0; | |
1111 | } | |
1112 | ||
71b5f4f1 | 1113 | static int dt9812_detach(struct comedi_device *dev) |
63274cd7 | 1114 | { |
63274cd7 AB |
1115 | return 0; |
1116 | } | |
1117 | ||
139dfbdf | 1118 | static struct comedi_driver dt9812_comedi_driver = { |
63274cd7 AB |
1119 | .module = THIS_MODULE, |
1120 | .driver_name = "dt9812", | |
1121 | .attach = dt9812_attach, | |
1122 | .detach = dt9812_detach, | |
1123 | }; | |
1124 | ||
1125 | static int __init usb_dt9812_init(void) | |
1126 | { | |
1127 | int result, i; | |
1128 | ||
f52a8af7 | 1129 | /* Initialize all driver slots */ |
63274cd7 | 1130 | for (i = 0; i < DT9812_NUM_SLOTS; i++) { |
0f0800f1 | 1131 | sema_init(&dt9812[i].mutex, 1); |
63274cd7 AB |
1132 | dt9812[i].serial = 0; |
1133 | dt9812[i].usb = NULL; | |
1134 | dt9812[i].comedi = NULL; | |
1135 | } | |
1136 | dt9812[12].serial = 0x0; | |
1137 | ||
f52a8af7 | 1138 | /* register with the USB subsystem */ |
63274cd7 AB |
1139 | result = usb_register(&dt9812_usb_driver); |
1140 | if (result) { | |
f52a8af7 GKH |
1141 | printk(KERN_ERR KBUILD_MODNAME |
1142 | ": usb_register failed. Error number %d\n", result); | |
1143 | return result; | |
63274cd7 | 1144 | } |
f52a8af7 | 1145 | /* register with comedi */ |
63274cd7 AB |
1146 | result = comedi_driver_register(&dt9812_comedi_driver); |
1147 | if (result) { | |
1148 | usb_deregister(&dt9812_usb_driver); | |
1149 | err("comedi_driver_register failed. Error number %d", result); | |
1150 | } | |
1151 | ||
1152 | return result; | |
1153 | } | |
1154 | ||
1155 | static void __exit usb_dt9812_exit(void) | |
1156 | { | |
f52a8af7 | 1157 | /* unregister with comedi */ |
63274cd7 AB |
1158 | comedi_driver_unregister(&dt9812_comedi_driver); |
1159 | ||
1160 | /* deregister this driver with the USB subsystem */ | |
1161 | usb_deregister(&dt9812_usb_driver); | |
1162 | } | |
1163 | ||
1164 | module_init(usb_dt9812_init); | |
1165 | module_exit(usb_dt9812_exit); | |
1166 | ||
1167 | MODULE_AUTHOR("Anders Blomdell <anders.blomdell@control.lth.se>"); | |
1168 | MODULE_DESCRIPTION("Comedi DT9812 driver"); | |
1169 | MODULE_LICENSE("GPL"); |