Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 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. |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | /* |
H Hartley Sweeten | 6c6e8b1 | 2015-10-07 15:58:42 -0700 | [diff] [blame] | 21 | * Driver: dt9812 |
| 22 | * Description: Data Translation DT9812 USB module |
| 23 | * Devices: [Data Translation] DT9812 (dt9812) |
| 24 | * Author: anders.blomdell@control.lth.se (Anders Blomdell) |
| 25 | * Status: in development |
| 26 | * Updated: Sun Nov 20 20:18:34 EST 2005 |
| 27 | * |
| 28 | * This driver works, but bulk transfers not implemented. Might be a |
| 29 | * starting point for someone else. I found out too late that USB has |
| 30 | * too high latencies (>1 ms) for my needs. |
| 31 | */ |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 32 | |
| 33 | /* |
| 34 | * Nota Bene: |
| 35 | * 1. All writes to command pipe has to be 32 bytes (ISP1181B SHRTP=0 ?) |
| 36 | * 2. The DDK source (as of sep 2005) is in error regarding the |
| 37 | * input MUX bits (example code says P4, but firmware schematics |
| 38 | * says P1). |
| 39 | */ |
| 40 | |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 41 | #include <linux/kernel.h> |
H Hartley Sweeten | ce157f8 | 2013-06-24 17:04:43 -0700 | [diff] [blame] | 42 | #include <linux/module.h> |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 43 | #include <linux/errno.h> |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 44 | #include <linux/uaccess.h> |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 45 | |
Ian Abbott | 2079377 | 2015-01-27 17:49:03 +0000 | [diff] [blame] | 46 | #include "../comedi_usb.h" |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 47 | |
| 48 | #define DT9812_DIAGS_BOARD_INFO_ADDR 0xFBFF |
| 49 | #define DT9812_MAX_WRITE_CMD_PIPE_SIZE 32 |
| 50 | #define DT9812_MAX_READ_CMD_PIPE_SIZE 32 |
| 51 | |
H Hartley Sweeten | 548c278 | 2013-05-14 14:35:24 -0700 | [diff] [blame] | 52 | /* usb_bulk_msg() timout in milliseconds */ |
| 53 | #define DT9812_USB_TIMEOUT 1000 |
| 54 | |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 55 | /* |
| 56 | * See Silican Laboratories C8051F020/1/2/3 manual |
| 57 | */ |
| 58 | #define F020_SFR_P4 0x84 |
| 59 | #define F020_SFR_P1 0x90 |
| 60 | #define F020_SFR_P2 0xa0 |
| 61 | #define F020_SFR_P3 0xb0 |
| 62 | #define F020_SFR_AMX0CF 0xba |
| 63 | #define F020_SFR_AMX0SL 0xbb |
| 64 | #define F020_SFR_ADC0CF 0xbc |
| 65 | #define F020_SFR_ADC0L 0xbe |
| 66 | #define F020_SFR_ADC0H 0xbf |
| 67 | #define F020_SFR_DAC0L 0xd2 |
| 68 | #define F020_SFR_DAC0H 0xd3 |
| 69 | #define F020_SFR_DAC0CN 0xd4 |
| 70 | #define F020_SFR_DAC1L 0xd5 |
| 71 | #define F020_SFR_DAC1H 0xd6 |
| 72 | #define F020_SFR_DAC1CN 0xd7 |
| 73 | #define F020_SFR_ADC0CN 0xe8 |
| 74 | |
| 75 | #define F020_MASK_ADC0CF_AMP0GN0 0x01 |
| 76 | #define F020_MASK_ADC0CF_AMP0GN1 0x02 |
| 77 | #define F020_MASK_ADC0CF_AMP0GN2 0x04 |
| 78 | |
| 79 | #define F020_MASK_ADC0CN_AD0EN 0x80 |
| 80 | #define F020_MASK_ADC0CN_AD0INT 0x20 |
| 81 | #define F020_MASK_ADC0CN_AD0BUSY 0x10 |
| 82 | |
H Hartley Sweeten | 00761a9 | 2015-10-07 15:58:43 -0700 | [diff] [blame] | 83 | #define F020_MASK_DACXCN_DACXEN 0x80 |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 84 | |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 85 | enum { |
Ian Abbott | 3ceba4b | 2013-10-07 17:29:38 +0100 | [diff] [blame] | 86 | /* A/D D/A DI DO CT */ |
| 87 | DT9812_DEVID_DT9812_10, /* 8 2 8 8 1 +/- 10V */ |
| 88 | DT9812_DEVID_DT9812_2PT5, /* 8 2 8 8 1 0-2.44V */ |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 89 | }; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 90 | |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 91 | enum dt9812_gain { |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 92 | DT9812_GAIN_0PT25 = 1, |
| 93 | DT9812_GAIN_0PT5 = 2, |
| 94 | DT9812_GAIN_1 = 4, |
| 95 | DT9812_GAIN_2 = 8, |
| 96 | DT9812_GAIN_4 = 16, |
| 97 | DT9812_GAIN_8 = 32, |
| 98 | DT9812_GAIN_16 = 64, |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 99 | }; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 100 | |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 101 | enum { |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 102 | DT9812_LEAST_USB_FIRMWARE_CMD_CODE = 0, |
| 103 | /* Write Flash memory */ |
| 104 | DT9812_W_FLASH_DATA = 0, |
| 105 | /* Read Flash memory misc config info */ |
| 106 | DT9812_R_FLASH_DATA = 1, |
| 107 | |
| 108 | /* |
| 109 | * Register read/write commands for processor |
| 110 | */ |
| 111 | |
| 112 | /* Read a single byte of USB memory */ |
| 113 | DT9812_R_SINGLE_BYTE_REG = 2, |
| 114 | /* Write a single byte of USB memory */ |
| 115 | DT9812_W_SINGLE_BYTE_REG = 3, |
| 116 | /* Multiple Reads of USB memory */ |
| 117 | DT9812_R_MULTI_BYTE_REG = 4, |
| 118 | /* Multiple Writes of USB memory */ |
| 119 | DT9812_W_MULTI_BYTE_REG = 5, |
| 120 | /* Read, (AND) with mask, OR value, then write (single) */ |
| 121 | DT9812_RMW_SINGLE_BYTE_REG = 6, |
| 122 | /* Read, (AND) with mask, OR value, then write (multiple) */ |
| 123 | DT9812_RMW_MULTI_BYTE_REG = 7, |
| 124 | |
| 125 | /* |
| 126 | * Register read/write commands for SMBus |
| 127 | */ |
| 128 | |
| 129 | /* Read a single byte of SMBus */ |
| 130 | DT9812_R_SINGLE_BYTE_SMBUS = 8, |
| 131 | /* Write a single byte of SMBus */ |
| 132 | DT9812_W_SINGLE_BYTE_SMBUS = 9, |
| 133 | /* Multiple Reads of SMBus */ |
| 134 | DT9812_R_MULTI_BYTE_SMBUS = 10, |
| 135 | /* Multiple Writes of SMBus */ |
| 136 | DT9812_W_MULTI_BYTE_SMBUS = 11, |
| 137 | |
| 138 | /* |
| 139 | * Register read/write commands for a device |
| 140 | */ |
| 141 | |
| 142 | /* Read a single byte of a device */ |
| 143 | DT9812_R_SINGLE_BYTE_DEV = 12, |
| 144 | /* Write a single byte of a device */ |
| 145 | DT9812_W_SINGLE_BYTE_DEV = 13, |
| 146 | /* Multiple Reads of a device */ |
| 147 | DT9812_R_MULTI_BYTE_DEV = 14, |
| 148 | /* Multiple Writes of a device */ |
| 149 | DT9812_W_MULTI_BYTE_DEV = 15, |
| 150 | |
| 151 | /* Not sure if we'll need this */ |
| 152 | DT9812_W_DAC_THRESHOLD = 16, |
| 153 | |
| 154 | /* Set interrupt on change mask */ |
| 155 | DT9812_W_INT_ON_CHANGE_MASK = 17, |
| 156 | |
| 157 | /* Write (or Clear) the CGL for the ADC */ |
| 158 | DT9812_W_CGL = 18, |
| 159 | /* Multiple Reads of USB memory */ |
| 160 | DT9812_R_MULTI_BYTE_USBMEM = 19, |
| 161 | /* Multiple Writes to USB memory */ |
| 162 | DT9812_W_MULTI_BYTE_USBMEM = 20, |
| 163 | |
| 164 | /* Issue a start command to a given subsystem */ |
| 165 | DT9812_START_SUBSYSTEM = 21, |
| 166 | /* Issue a stop command to a given subsystem */ |
| 167 | DT9812_STOP_SUBSYSTEM = 22, |
| 168 | |
| 169 | /* calibrate the board using CAL_POT_CMD */ |
| 170 | DT9812_CALIBRATE_POT = 23, |
| 171 | /* set the DAC FIFO size */ |
| 172 | DT9812_W_DAC_FIFO_SIZE = 24, |
| 173 | /* Write or Clear the CGL for the DAC */ |
| 174 | DT9812_W_CGL_DAC = 25, |
| 175 | /* Read a single value from a subsystem */ |
| 176 | DT9812_R_SINGLE_VALUE_CMD = 26, |
| 177 | /* Write a single value to a subsystem */ |
| 178 | DT9812_W_SINGLE_VALUE_CMD = 27, |
| 179 | /* Valid DT9812_USB_FIRMWARE_CMD_CODE's will be less than this number */ |
| 180 | DT9812_MAX_USB_FIRMWARE_CMD_CODE, |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 181 | }; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 182 | |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 183 | struct dt9812_flash_data { |
Shaun Laing | 70bcbc0 | 2013-07-30 11:29:43 -0600 | [diff] [blame] | 184 | __le16 numbytes; |
| 185 | __le16 address; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 186 | }; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 187 | |
| 188 | #define DT9812_MAX_NUM_MULTI_BYTE_RDS \ |
Ravishankar Karkala Mallikarjunayya | 65c5cfa | 2012-05-01 11:55:08 +0530 | [diff] [blame] | 189 | ((DT9812_MAX_WRITE_CMD_PIPE_SIZE - 4 - 1) / sizeof(u8)) |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 190 | |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 191 | struct dt9812_read_multi { |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 192 | u8 count; |
| 193 | u8 address[DT9812_MAX_NUM_MULTI_BYTE_RDS]; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 194 | }; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 195 | |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 196 | struct dt9812_write_byte { |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 197 | u8 address; |
| 198 | u8 value; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 199 | }; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 200 | |
| 201 | #define DT9812_MAX_NUM_MULTI_BYTE_WRTS \ |
Ravishankar Karkala Mallikarjunayya | 65c5cfa | 2012-05-01 11:55:08 +0530 | [diff] [blame] | 202 | ((DT9812_MAX_WRITE_CMD_PIPE_SIZE - 4 - 1) / \ |
| 203 | sizeof(struct dt9812_write_byte)) |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 204 | |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 205 | struct dt9812_write_multi { |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 206 | u8 count; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 207 | struct dt9812_write_byte write[DT9812_MAX_NUM_MULTI_BYTE_WRTS]; |
| 208 | }; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 209 | |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 210 | struct dt9812_rmw_byte { |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 211 | u8 address; |
| 212 | u8 and_mask; |
| 213 | u8 or_value; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 214 | }; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 215 | |
| 216 | #define DT9812_MAX_NUM_MULTI_BYTE_RMWS \ |
Ravishankar Karkala Mallikarjunayya | 65c5cfa | 2012-05-01 11:55:08 +0530 | [diff] [blame] | 217 | ((DT9812_MAX_WRITE_CMD_PIPE_SIZE - 4 - 1) / \ |
| 218 | sizeof(struct dt9812_rmw_byte)) |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 219 | |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 220 | struct dt9812_rmw_multi { |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 221 | u8 count; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 222 | struct dt9812_rmw_byte rmw[DT9812_MAX_NUM_MULTI_BYTE_RMWS]; |
| 223 | }; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 224 | |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 225 | struct dt9812_usb_cmd { |
Shaun Laing | 70bcbc0 | 2013-07-30 11:29:43 -0600 | [diff] [blame] | 226 | __le32 cmd; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 227 | union { |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 228 | struct dt9812_flash_data flash_data_info; |
| 229 | struct dt9812_read_multi read_multi_info; |
| 230 | struct dt9812_write_multi write_multi_info; |
| 231 | struct dt9812_rmw_multi rmw_multi_info; |
Greg Kroah-Hartman | c73190f | 2008-11-18 11:11:18 -0800 | [diff] [blame] | 232 | } u; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 233 | }; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 234 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 235 | struct dt9812_private { |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 236 | struct mutex mut; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 237 | struct { |
| 238 | __u8 addr; |
| 239 | size_t size; |
H Hartley Sweeten | 387d4879 | 2013-05-14 14:26:54 -0700 | [diff] [blame] | 240 | } cmd_wr, cmd_rd; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 241 | u16 device; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 242 | }; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 243 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 244 | static int dt9812_read_info(struct comedi_device *dev, |
| 245 | int offset, void *buf, size_t buf_size) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 246 | { |
H Hartley Sweeten | 87d87ad | 2013-05-20 14:27:48 -0700 | [diff] [blame] | 247 | struct usb_device *usb = comedi_to_usb_dev(dev); |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 248 | struct dt9812_private *devpriv = dev->private; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 249 | struct dt9812_usb_cmd cmd; |
H Hartley Sweeten | 0ec77d3 | 2013-05-14 14:22:39 -0700 | [diff] [blame] | 250 | int count, ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 251 | |
| 252 | cmd.cmd = cpu_to_le32(DT9812_R_FLASH_DATA); |
| 253 | cmd.u.flash_data_info.address = |
Mithlesh Thukral | 0a85b6f | 2009-06-08 21:04:41 +0530 | [diff] [blame] | 254 | cpu_to_le16(DT9812_DIAGS_BOARD_INFO_ADDR + offset); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 255 | cmd.u.flash_data_info.numbytes = cpu_to_le16(buf_size); |
| 256 | |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 257 | /* DT9812 only responds to 32 byte writes!! */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 258 | ret = usb_bulk_msg(usb, usb_sndbulkpipe(usb, devpriv->cmd_wr.addr), |
H Hartley Sweeten | 548c278 | 2013-05-14 14:35:24 -0700 | [diff] [blame] | 259 | &cmd, 32, &count, DT9812_USB_TIMEOUT); |
H Hartley Sweeten | 0ec77d3 | 2013-05-14 14:22:39 -0700 | [diff] [blame] | 260 | if (ret) |
| 261 | return ret; |
| 262 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 263 | return usb_bulk_msg(usb, usb_rcvbulkpipe(usb, devpriv->cmd_rd.addr), |
H Hartley Sweeten | 548c278 | 2013-05-14 14:35:24 -0700 | [diff] [blame] | 264 | buf, buf_size, &count, DT9812_USB_TIMEOUT); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 265 | } |
| 266 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 267 | static int dt9812_read_multiple_registers(struct comedi_device *dev, |
| 268 | int reg_count, u8 *address, |
| 269 | u8 *value) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 270 | { |
H Hartley Sweeten | 87d87ad | 2013-05-20 14:27:48 -0700 | [diff] [blame] | 271 | struct usb_device *usb = comedi_to_usb_dev(dev); |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 272 | struct dt9812_private *devpriv = dev->private; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 273 | struct dt9812_usb_cmd cmd; |
H Hartley Sweeten | 0ec77d3 | 2013-05-14 14:22:39 -0700 | [diff] [blame] | 274 | int i, count, ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 275 | |
| 276 | cmd.cmd = cpu_to_le32(DT9812_R_MULTI_BYTE_REG); |
| 277 | cmd.u.read_multi_info.count = reg_count; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 278 | for (i = 0; i < reg_count; i++) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 279 | cmd.u.read_multi_info.address[i] = address[i]; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 280 | |
| 281 | /* DT9812 only responds to 32 byte writes!! */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 282 | ret = usb_bulk_msg(usb, usb_sndbulkpipe(usb, devpriv->cmd_wr.addr), |
H Hartley Sweeten | 548c278 | 2013-05-14 14:35:24 -0700 | [diff] [blame] | 283 | &cmd, 32, &count, DT9812_USB_TIMEOUT); |
H Hartley Sweeten | 0ec77d3 | 2013-05-14 14:22:39 -0700 | [diff] [blame] | 284 | if (ret) |
| 285 | return ret; |
| 286 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 287 | return usb_bulk_msg(usb, usb_rcvbulkpipe(usb, devpriv->cmd_rd.addr), |
H Hartley Sweeten | 548c278 | 2013-05-14 14:35:24 -0700 | [diff] [blame] | 288 | value, reg_count, &count, DT9812_USB_TIMEOUT); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 289 | } |
| 290 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 291 | static int dt9812_write_multiple_registers(struct comedi_device *dev, |
Ravishankar Karkala Mallikarjunayya | a7a55d4 | 2012-05-01 11:55:09 +0530 | [diff] [blame] | 292 | int reg_count, u8 *address, |
| 293 | u8 *value) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 294 | { |
H Hartley Sweeten | 87d87ad | 2013-05-20 14:27:48 -0700 | [diff] [blame] | 295 | struct usb_device *usb = comedi_to_usb_dev(dev); |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 296 | struct dt9812_private *devpriv = dev->private; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 297 | struct dt9812_usb_cmd cmd; |
H Hartley Sweeten | 0ec77d3 | 2013-05-14 14:22:39 -0700 | [diff] [blame] | 298 | int i, count; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 299 | |
| 300 | cmd.cmd = cpu_to_le32(DT9812_W_MULTI_BYTE_REG); |
| 301 | cmd.u.read_multi_info.count = reg_count; |
| 302 | for (i = 0; i < reg_count; i++) { |
| 303 | cmd.u.write_multi_info.write[i].address = address[i]; |
| 304 | cmd.u.write_multi_info.write[i].value = value[i]; |
| 305 | } |
H Hartley Sweeten | 0ec77d3 | 2013-05-14 14:22:39 -0700 | [diff] [blame] | 306 | |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 307 | /* DT9812 only responds to 32 byte writes!! */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 308 | return usb_bulk_msg(usb, usb_sndbulkpipe(usb, devpriv->cmd_wr.addr), |
H Hartley Sweeten | 548c278 | 2013-05-14 14:35:24 -0700 | [diff] [blame] | 309 | &cmd, 32, &count, DT9812_USB_TIMEOUT); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 310 | } |
| 311 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 312 | static int dt9812_rmw_multiple_registers(struct comedi_device *dev, |
| 313 | int reg_count, |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 314 | struct dt9812_rmw_byte *rmw) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 315 | { |
H Hartley Sweeten | 87d87ad | 2013-05-20 14:27:48 -0700 | [diff] [blame] | 316 | struct usb_device *usb = comedi_to_usb_dev(dev); |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 317 | struct dt9812_private *devpriv = dev->private; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 318 | struct dt9812_usb_cmd cmd; |
H Hartley Sweeten | 0ec77d3 | 2013-05-14 14:22:39 -0700 | [diff] [blame] | 319 | int i, count; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 320 | |
| 321 | cmd.cmd = cpu_to_le32(DT9812_RMW_MULTI_BYTE_REG); |
| 322 | cmd.u.rmw_multi_info.count = reg_count; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 323 | for (i = 0; i < reg_count; i++) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 324 | cmd.u.rmw_multi_info.rmw[i] = rmw[i]; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 325 | |
| 326 | /* DT9812 only responds to 32 byte writes!! */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 327 | return usb_bulk_msg(usb, usb_sndbulkpipe(usb, devpriv->cmd_wr.addr), |
H Hartley Sweeten | 548c278 | 2013-05-14 14:35:24 -0700 | [diff] [blame] | 328 | &cmd, 32, &count, DT9812_USB_TIMEOUT); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 329 | } |
| 330 | |
H Hartley Sweeten | 4bc839f | 2013-05-14 14:23:12 -0700 | [diff] [blame] | 331 | static int dt9812_digital_in(struct comedi_device *dev, u8 *bits) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 332 | { |
H Hartley Sweeten | 4bc839f | 2013-05-14 14:23:12 -0700 | [diff] [blame] | 333 | struct dt9812_private *devpriv = dev->private; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 334 | u8 reg[2] = { F020_SFR_P3, F020_SFR_P1 }; |
| 335 | u8 value[2]; |
| 336 | int ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 337 | |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 338 | mutex_lock(&devpriv->mut); |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 339 | ret = dt9812_read_multiple_registers(dev, 2, reg, value); |
| 340 | if (ret == 0) { |
| 341 | /* |
| 342 | * bits 0-6 in F020_SFR_P3 are bits 0-6 in the digital |
| 343 | * input port bit 3 in F020_SFR_P1 is bit 7 in the |
| 344 | * digital input port |
| 345 | */ |
| 346 | *bits = (value[0] & 0x7f) | ((value[1] & 0x08) << 4); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 347 | } |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 348 | mutex_unlock(&devpriv->mut); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 349 | |
H Hartley Sweeten | 4bc839f | 2013-05-14 14:23:12 -0700 | [diff] [blame] | 350 | return ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 351 | } |
| 352 | |
H Hartley Sweeten | 51af6fa | 2013-05-14 14:23:35 -0700 | [diff] [blame] | 353 | static int dt9812_digital_out(struct comedi_device *dev, u8 bits) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 354 | { |
H Hartley Sweeten | 51af6fa | 2013-05-14 14:23:35 -0700 | [diff] [blame] | 355 | struct dt9812_private *devpriv = dev->private; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 356 | u8 reg[1] = { F020_SFR_P2 }; |
| 357 | u8 value[1] = { bits }; |
| 358 | int ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 359 | |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 360 | mutex_lock(&devpriv->mut); |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 361 | ret = dt9812_write_multiple_registers(dev, 1, reg, value); |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 362 | mutex_unlock(&devpriv->mut); |
H Hartley Sweeten | 51af6fa | 2013-05-14 14:23:35 -0700 | [diff] [blame] | 363 | |
| 364 | return ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 365 | } |
| 366 | |
H Hartley Sweeten | 687d847 | 2013-05-14 14:26:05 -0700 | [diff] [blame] | 367 | static void dt9812_configure_mux(struct comedi_device *dev, |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 368 | struct dt9812_rmw_byte *rmw, int channel) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 369 | { |
H Hartley Sweeten | 687d847 | 2013-05-14 14:26:05 -0700 | [diff] [blame] | 370 | struct dt9812_private *devpriv = dev->private; |
H Hartley Sweeten | 687d847 | 2013-05-14 14:26:05 -0700 | [diff] [blame] | 371 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 372 | if (devpriv->device == DT9812_DEVID_DT9812_10) { |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 373 | /* In the DT9812/10V MUX is selected by P1.5-7 */ |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 374 | rmw->address = F020_SFR_P1; |
| 375 | rmw->and_mask = 0xe0; |
| 376 | rmw->or_value = channel << 5; |
| 377 | } else { |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 378 | /* In the DT9812/2.5V, internal mux is selected by bits 0:2 */ |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 379 | rmw->address = F020_SFR_AMX0SL; |
| 380 | rmw->and_mask = 0xff; |
| 381 | rmw->or_value = channel & 0x07; |
| 382 | } |
| 383 | } |
| 384 | |
H Hartley Sweeten | be8f16d | 2013-05-14 14:25:42 -0700 | [diff] [blame] | 385 | static void dt9812_configure_gain(struct comedi_device *dev, |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 386 | struct dt9812_rmw_byte *rmw, |
| 387 | enum dt9812_gain gain) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 388 | { |
H Hartley Sweeten | be8f16d | 2013-05-14 14:25:42 -0700 | [diff] [blame] | 389 | struct dt9812_private *devpriv = dev->private; |
H Hartley Sweeten | be8f16d | 2013-05-14 14:25:42 -0700 | [diff] [blame] | 390 | |
| 391 | /* In the DT9812/10V, there is an external gain of 0.5 */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 392 | if (devpriv->device == DT9812_DEVID_DT9812_10) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 393 | gain <<= 1; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 394 | |
| 395 | rmw->address = F020_SFR_ADC0CF; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 396 | rmw->and_mask = F020_MASK_ADC0CF_AMP0GN2 | |
H Hartley Sweeten | be8f16d | 2013-05-14 14:25:42 -0700 | [diff] [blame] | 397 | F020_MASK_ADC0CF_AMP0GN1 | |
| 398 | F020_MASK_ADC0CF_AMP0GN0; |
| 399 | |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 400 | switch (gain) { |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 401 | /* |
| 402 | * 000 -> Gain = 1 |
| 403 | * 001 -> Gain = 2 |
| 404 | * 010 -> Gain = 4 |
| 405 | * 011 -> Gain = 8 |
| 406 | * 10x -> Gain = 16 |
| 407 | * 11x -> Gain = 0.5 |
| 408 | */ |
| 409 | case DT9812_GAIN_0PT5: |
Dan Carpenter | cba2c99 | 2012-01-17 10:31:13 +0300 | [diff] [blame] | 410 | rmw->or_value = F020_MASK_ADC0CF_AMP0GN2 | |
H Hartley Sweeten | be8f16d | 2013-05-14 14:25:42 -0700 | [diff] [blame] | 411 | F020_MASK_ADC0CF_AMP0GN1; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 412 | break; |
H Hartley Sweeten | d6caedf | 2013-05-14 14:35:47 -0700 | [diff] [blame] | 413 | default: |
| 414 | /* this should never happen, just use a gain of 1 */ |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 415 | case DT9812_GAIN_1: |
| 416 | rmw->or_value = 0x00; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 417 | break; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 418 | case DT9812_GAIN_2: |
| 419 | rmw->or_value = F020_MASK_ADC0CF_AMP0GN0; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 420 | break; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 421 | case DT9812_GAIN_4: |
| 422 | rmw->or_value = F020_MASK_ADC0CF_AMP0GN1; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 423 | break; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 424 | case DT9812_GAIN_8: |
Dan Carpenter | cba2c99 | 2012-01-17 10:31:13 +0300 | [diff] [blame] | 425 | rmw->or_value = F020_MASK_ADC0CF_AMP0GN1 | |
H Hartley Sweeten | be8f16d | 2013-05-14 14:25:42 -0700 | [diff] [blame] | 426 | F020_MASK_ADC0CF_AMP0GN0; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 427 | break; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 428 | case DT9812_GAIN_16: |
| 429 | rmw->or_value = F020_MASK_ADC0CF_AMP0GN2; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 430 | break; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 431 | } |
| 432 | } |
| 433 | |
H Hartley Sweeten | c13626a | 2013-05-14 14:24:21 -0700 | [diff] [blame] | 434 | static int dt9812_analog_in(struct comedi_device *dev, |
| 435 | int channel, u16 *value, enum dt9812_gain gain) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 436 | { |
H Hartley Sweeten | c13626a | 2013-05-14 14:24:21 -0700 | [diff] [blame] | 437 | struct dt9812_private *devpriv = dev->private; |
Greg Kroah-Hartman | 98f3c67 | 2008-11-18 11:48:57 -0800 | [diff] [blame] | 438 | struct dt9812_rmw_byte rmw[3]; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 439 | u8 reg[3] = { |
| 440 | F020_SFR_ADC0CN, |
| 441 | F020_SFR_ADC0H, |
| 442 | F020_SFR_ADC0L |
| 443 | }; |
| 444 | u8 val[3]; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 445 | int ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 446 | |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 447 | mutex_lock(&devpriv->mut); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 448 | |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 449 | /* 1 select the gain */ |
H Hartley Sweeten | be8f16d | 2013-05-14 14:25:42 -0700 | [diff] [blame] | 450 | dt9812_configure_gain(dev, &rmw[0], gain); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 451 | |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 452 | /* 2 set the MUX to select the channel */ |
H Hartley Sweeten | 687d847 | 2013-05-14 14:26:05 -0700 | [diff] [blame] | 453 | dt9812_configure_mux(dev, &rmw[1], channel); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 454 | |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 455 | /* 3 start conversion */ |
| 456 | rmw[2].address = F020_SFR_ADC0CN; |
| 457 | rmw[2].and_mask = 0xff; |
| 458 | rmw[2].or_value = F020_MASK_ADC0CN_AD0EN | F020_MASK_ADC0CN_AD0BUSY; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 459 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 460 | ret = dt9812_rmw_multiple_registers(dev, 3, rmw); |
H Hartley Sweeten | c13626a | 2013-05-14 14:24:21 -0700 | [diff] [blame] | 461 | if (ret) |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 462 | goto exit; |
| 463 | |
| 464 | /* read the status and ADC */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 465 | ret = dt9812_read_multiple_registers(dev, 3, reg, val); |
H Hartley Sweeten | c13626a | 2013-05-14 14:24:21 -0700 | [diff] [blame] | 466 | if (ret) |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 467 | goto exit; |
H Hartley Sweeten | c13626a | 2013-05-14 14:24:21 -0700 | [diff] [blame] | 468 | |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 469 | /* |
| 470 | * An ADC conversion takes 16 SAR clocks cycles, i.e. about 9us. |
| 471 | * Therefore, between the instant that AD0BUSY was set via |
| 472 | * dt9812_rmw_multiple_registers and the read of AD0BUSY via |
| 473 | * dt9812_read_multiple_registers, the conversion should be complete |
| 474 | * since these two operations require two USB transactions each taking |
| 475 | * at least a millisecond to complete. However, lets make sure that |
| 476 | * conversion is finished. |
| 477 | */ |
| 478 | if ((val[0] & (F020_MASK_ADC0CN_AD0INT | F020_MASK_ADC0CN_AD0BUSY)) == |
| 479 | F020_MASK_ADC0CN_AD0INT) { |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 480 | switch (devpriv->device) { |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 481 | case DT9812_DEVID_DT9812_10: |
| 482 | /* |
| 483 | * For DT9812-10V the personality module set the |
| 484 | * encoding to 2's complement. Hence, convert it before |
| 485 | * returning it |
| 486 | */ |
| 487 | *value = ((val[1] << 8) | val[2]) + 0x800; |
| 488 | break; |
| 489 | case DT9812_DEVID_DT9812_2PT5: |
| 490 | *value = (val[1] << 8) | val[2]; |
| 491 | break; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 492 | } |
| 493 | } |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 494 | |
| 495 | exit: |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 496 | mutex_unlock(&devpriv->mut); |
H Hartley Sweeten | c13626a | 2013-05-14 14:24:21 -0700 | [diff] [blame] | 497 | |
| 498 | return ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 499 | } |
| 500 | |
H Hartley Sweeten | 9d231df | 2013-05-14 14:26:28 -0700 | [diff] [blame] | 501 | static int dt9812_analog_out(struct comedi_device *dev, int channel, u16 value) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 502 | { |
H Hartley Sweeten | 9d231df | 2013-05-14 14:26:28 -0700 | [diff] [blame] | 503 | struct dt9812_private *devpriv = dev->private; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 504 | struct dt9812_rmw_byte rmw[3]; |
| 505 | int ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 506 | |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 507 | mutex_lock(&devpriv->mut); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 508 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 509 | switch (channel) { |
| 510 | case 0: |
| 511 | /* 1. Set DAC mode */ |
| 512 | rmw[0].address = F020_SFR_DAC0CN; |
| 513 | rmw[0].and_mask = 0xff; |
H Hartley Sweeten | 00761a9 | 2015-10-07 15:58:43 -0700 | [diff] [blame] | 514 | rmw[0].or_value = F020_MASK_DACXCN_DACXEN; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 515 | |
H Hartley Sweeten | 5050b13 | 2015-10-07 15:58:44 -0700 | [diff] [blame] | 516 | /* 2. load lsb of DAC value first */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 517 | rmw[1].address = F020_SFR_DAC0L; |
| 518 | rmw[1].and_mask = 0xff; |
| 519 | rmw[1].or_value = value & 0xff; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 520 | |
H Hartley Sweeten | 5050b13 | 2015-10-07 15:58:44 -0700 | [diff] [blame] | 521 | /* 3. load msb of DAC value next to latch the 12-bit value */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 522 | rmw[2].address = F020_SFR_DAC0H; |
| 523 | rmw[2].and_mask = 0xff; |
| 524 | rmw[2].or_value = (value >> 8) & 0xf; |
| 525 | break; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 526 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 527 | case 1: |
| 528 | /* 1. Set DAC mode */ |
| 529 | rmw[0].address = F020_SFR_DAC1CN; |
| 530 | rmw[0].and_mask = 0xff; |
H Hartley Sweeten | 00761a9 | 2015-10-07 15:58:43 -0700 | [diff] [blame] | 531 | rmw[0].or_value = F020_MASK_DACXCN_DACXEN; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 532 | |
H Hartley Sweeten | 5050b13 | 2015-10-07 15:58:44 -0700 | [diff] [blame] | 533 | /* 2. load lsb of DAC value first */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 534 | rmw[1].address = F020_SFR_DAC1L; |
| 535 | rmw[1].and_mask = 0xff; |
| 536 | rmw[1].or_value = value & 0xff; |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 537 | |
H Hartley Sweeten | 5050b13 | 2015-10-07 15:58:44 -0700 | [diff] [blame] | 538 | /* 3. load msb of DAC value next to latch the 12-bit value */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 539 | rmw[2].address = F020_SFR_DAC1H; |
| 540 | rmw[2].and_mask = 0xff; |
| 541 | rmw[2].or_value = (value >> 8) & 0xf; |
| 542 | break; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 543 | } |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 544 | ret = dt9812_rmw_multiple_registers(dev, 3, rmw); |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 545 | |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 546 | mutex_unlock(&devpriv->mut); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 547 | |
H Hartley Sweeten | 9d231df | 2013-05-14 14:26:28 -0700 | [diff] [blame] | 548 | return ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 549 | } |
| 550 | |
H Hartley Sweeten | e81eaba | 2013-05-14 14:32:17 -0700 | [diff] [blame] | 551 | static int dt9812_di_insn_bits(struct comedi_device *dev, |
| 552 | struct comedi_subdevice *s, |
| 553 | struct comedi_insn *insn, |
| 554 | unsigned int *data) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 555 | { |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 556 | u8 bits = 0; |
H Hartley Sweeten | e81eaba | 2013-05-14 14:32:17 -0700 | [diff] [blame] | 557 | int ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 558 | |
H Hartley Sweeten | e81eaba | 2013-05-14 14:32:17 -0700 | [diff] [blame] | 559 | ret = dt9812_digital_in(dev, &bits); |
| 560 | if (ret) |
| 561 | return ret; |
| 562 | |
| 563 | data[1] = bits; |
| 564 | |
| 565 | return insn->n; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 566 | } |
| 567 | |
H Hartley Sweeten | 36c973d | 2013-05-14 14:32:42 -0700 | [diff] [blame] | 568 | static int dt9812_do_insn_bits(struct comedi_device *dev, |
| 569 | struct comedi_subdevice *s, |
| 570 | struct comedi_insn *insn, |
| 571 | unsigned int *data) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 572 | { |
H Hartley Sweeten | 97f4289 | 2013-08-30 11:05:58 -0700 | [diff] [blame] | 573 | if (comedi_dio_update_state(s, data)) |
H Hartley Sweeten | 36c973d | 2013-05-14 14:32:42 -0700 | [diff] [blame] | 574 | dt9812_digital_out(dev, s->state); |
H Hartley Sweeten | 36c973d | 2013-05-14 14:32:42 -0700 | [diff] [blame] | 575 | |
| 576 | data[1] = s->state; |
| 577 | |
| 578 | return insn->n; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 579 | } |
| 580 | |
H Hartley Sweeten | 83a69f5 | 2013-05-14 14:33:09 -0700 | [diff] [blame] | 581 | static int dt9812_ai_insn_read(struct comedi_device *dev, |
| 582 | struct comedi_subdevice *s, |
| 583 | struct comedi_insn *insn, |
| 584 | unsigned int *data) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 585 | { |
H Hartley Sweeten | 83a69f5 | 2013-05-14 14:33:09 -0700 | [diff] [blame] | 586 | unsigned int chan = CR_CHAN(insn->chanspec); |
| 587 | u16 val = 0; |
| 588 | int ret; |
| 589 | int i; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 590 | |
H Hartley Sweeten | 83a69f5 | 2013-05-14 14:33:09 -0700 | [diff] [blame] | 591 | for (i = 0; i < insn->n; i++) { |
| 592 | ret = dt9812_analog_in(dev, chan, &val, DT9812_GAIN_1); |
| 593 | if (ret) |
| 594 | return ret; |
| 595 | data[i] = val; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 596 | } |
H Hartley Sweeten | 83a69f5 | 2013-05-14 14:33:09 -0700 | [diff] [blame] | 597 | |
| 598 | return insn->n; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 599 | } |
| 600 | |
H Hartley Sweeten | e79f18e | 2013-05-14 14:33:30 -0700 | [diff] [blame] | 601 | static int dt9812_ao_insn_read(struct comedi_device *dev, |
| 602 | struct comedi_subdevice *s, |
| 603 | struct comedi_insn *insn, |
| 604 | unsigned int *data) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 605 | { |
H Hartley Sweeten | e79f18e | 2013-05-14 14:33:30 -0700 | [diff] [blame] | 606 | struct dt9812_private *devpriv = dev->private; |
H Hartley Sweeten | acc5fe2 | 2014-08-25 16:04:19 -0700 | [diff] [blame] | 607 | int ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 608 | |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 609 | mutex_lock(&devpriv->mut); |
H Hartley Sweeten | acc5fe2 | 2014-08-25 16:04:19 -0700 | [diff] [blame] | 610 | ret = comedi_readback_insn_read(dev, s, insn, data); |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 611 | mutex_unlock(&devpriv->mut); |
H Hartley Sweeten | e79f18e | 2013-05-14 14:33:30 -0700 | [diff] [blame] | 612 | |
H Hartley Sweeten | acc5fe2 | 2014-08-25 16:04:19 -0700 | [diff] [blame] | 613 | return ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 614 | } |
| 615 | |
H Hartley Sweeten | 99928e6 | 2013-05-14 14:33:53 -0700 | [diff] [blame] | 616 | static int dt9812_ao_insn_write(struct comedi_device *dev, |
| 617 | struct comedi_subdevice *s, |
| 618 | struct comedi_insn *insn, |
| 619 | unsigned int *data) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 620 | { |
H Hartley Sweeten | 99928e6 | 2013-05-14 14:33:53 -0700 | [diff] [blame] | 621 | unsigned int chan = CR_CHAN(insn->chanspec); |
H Hartley Sweeten | 99928e6 | 2013-05-14 14:33:53 -0700 | [diff] [blame] | 622 | int i; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 623 | |
H Hartley Sweeten | 99928e6 | 2013-05-14 14:33:53 -0700 | [diff] [blame] | 624 | for (i = 0; i < insn->n; i++) { |
H Hartley Sweeten | acc5fe2 | 2014-08-25 16:04:19 -0700 | [diff] [blame] | 625 | unsigned int val = data[i]; |
| 626 | int ret; |
| 627 | |
| 628 | ret = dt9812_analog_out(dev, chan, val); |
H Hartley Sweeten | 99928e6 | 2013-05-14 14:33:53 -0700 | [diff] [blame] | 629 | if (ret) |
| 630 | return ret; |
H Hartley Sweeten | acc5fe2 | 2014-08-25 16:04:19 -0700 | [diff] [blame] | 631 | |
| 632 | s->readback[chan] = val; |
H Hartley Sweeten | 99928e6 | 2013-05-14 14:33:53 -0700 | [diff] [blame] | 633 | } |
| 634 | |
| 635 | return insn->n; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 636 | } |
| 637 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 638 | static int dt9812_find_endpoints(struct comedi_device *dev) |
H Hartley Sweeten | 8ee2646 | 2013-05-14 14:29:14 -0700 | [diff] [blame] | 639 | { |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 640 | struct usb_interface *intf = comedi_to_usb_interface(dev); |
H Hartley Sweeten | 8ee2646 | 2013-05-14 14:29:14 -0700 | [diff] [blame] | 641 | struct usb_host_interface *host = intf->cur_altsetting; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 642 | struct dt9812_private *devpriv = dev->private; |
H Hartley Sweeten | 8ee2646 | 2013-05-14 14:29:14 -0700 | [diff] [blame] | 643 | struct usb_endpoint_descriptor *ep; |
| 644 | int i; |
| 645 | |
| 646 | if (host->desc.bNumEndpoints != 5) { |
H Hartley Sweeten | 056254f | 2013-05-14 14:34:36 -0700 | [diff] [blame] | 647 | dev_err(dev->class_dev, "Wrong number of endpoints\n"); |
H Hartley Sweeten | 8ee2646 | 2013-05-14 14:29:14 -0700 | [diff] [blame] | 648 | return -ENODEV; |
| 649 | } |
| 650 | |
| 651 | for (i = 0; i < host->desc.bNumEndpoints; ++i) { |
| 652 | int dir = -1; |
H Hartley Sweeten | 98039f8 | 2014-07-16 11:01:58 -0700 | [diff] [blame] | 653 | |
H Hartley Sweeten | 8ee2646 | 2013-05-14 14:29:14 -0700 | [diff] [blame] | 654 | ep = &host->endpoint[i].desc; |
| 655 | switch (i) { |
| 656 | case 0: |
| 657 | /* unused message pipe */ |
| 658 | dir = USB_DIR_IN; |
| 659 | break; |
| 660 | case 1: |
| 661 | dir = USB_DIR_OUT; |
| 662 | devpriv->cmd_wr.addr = ep->bEndpointAddress; |
| 663 | devpriv->cmd_wr.size = le16_to_cpu(ep->wMaxPacketSize); |
| 664 | break; |
| 665 | case 2: |
| 666 | dir = USB_DIR_IN; |
| 667 | devpriv->cmd_rd.addr = ep->bEndpointAddress; |
| 668 | devpriv->cmd_rd.size = le16_to_cpu(ep->wMaxPacketSize); |
| 669 | break; |
| 670 | case 3: |
| 671 | /* unused write stream */ |
| 672 | dir = USB_DIR_OUT; |
| 673 | break; |
| 674 | case 4: |
| 675 | /* unused read stream */ |
| 676 | dir = USB_DIR_IN; |
| 677 | break; |
| 678 | } |
| 679 | if ((ep->bEndpointAddress & USB_DIR_IN) != dir) { |
H Hartley Sweeten | 056254f | 2013-05-14 14:34:36 -0700 | [diff] [blame] | 680 | dev_err(dev->class_dev, |
| 681 | "Endpoint has wrong direction\n"); |
H Hartley Sweeten | 8ee2646 | 2013-05-14 14:29:14 -0700 | [diff] [blame] | 682 | return -ENODEV; |
| 683 | } |
| 684 | } |
| 685 | return 0; |
| 686 | } |
| 687 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 688 | static int dt9812_reset_device(struct comedi_device *dev) |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 689 | { |
H Hartley Sweeten | 87d87ad | 2013-05-20 14:27:48 -0700 | [diff] [blame] | 690 | struct usb_device *usb = comedi_to_usb_dev(dev); |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 691 | struct dt9812_private *devpriv = dev->private; |
H Hartley Sweeten | 421b42a | 2013-05-14 14:30:59 -0700 | [diff] [blame] | 692 | u32 serial; |
| 693 | u16 vendor; |
| 694 | u16 product; |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 695 | u8 tmp8; |
Shaun Laing | e4ea910 | 2013-07-26 08:25:34 -0600 | [diff] [blame] | 696 | __le16 tmp16; |
| 697 | __le32 tmp32; |
H Hartley Sweeten | 421b42a | 2013-05-14 14:30:59 -0700 | [diff] [blame] | 698 | int ret; |
| 699 | int i; |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 700 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 701 | ret = dt9812_read_info(dev, 0, &tmp8, sizeof(tmp8)); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 702 | if (ret) { |
| 703 | /* |
| 704 | * Seems like a configuration reset is necessary if driver is |
| 705 | * reloaded while device is attached |
| 706 | */ |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 707 | usb_reset_configuration(usb); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 708 | for (i = 0; i < 10; i++) { |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 709 | ret = dt9812_read_info(dev, 1, &tmp8, sizeof(tmp8)); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 710 | if (ret == 0) |
| 711 | break; |
| 712 | } |
| 713 | if (ret) { |
H Hartley Sweeten | 056254f | 2013-05-14 14:34:36 -0700 | [diff] [blame] | 714 | dev_err(dev->class_dev, |
| 715 | "unable to reset configuration\n"); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 716 | return ret; |
| 717 | } |
| 718 | } |
| 719 | |
Shaun Laing | e4ea910 | 2013-07-26 08:25:34 -0600 | [diff] [blame] | 720 | ret = dt9812_read_info(dev, 1, &tmp16, sizeof(tmp16)); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 721 | if (ret) { |
H Hartley Sweeten | 056254f | 2013-05-14 14:34:36 -0700 | [diff] [blame] | 722 | dev_err(dev->class_dev, "failed to read vendor id\n"); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 723 | return ret; |
| 724 | } |
Shaun Laing | e4ea910 | 2013-07-26 08:25:34 -0600 | [diff] [blame] | 725 | vendor = le16_to_cpu(tmp16); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 726 | |
Shaun Laing | e4ea910 | 2013-07-26 08:25:34 -0600 | [diff] [blame] | 727 | ret = dt9812_read_info(dev, 3, &tmp16, sizeof(tmp16)); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 728 | if (ret) { |
H Hartley Sweeten | 056254f | 2013-05-14 14:34:36 -0700 | [diff] [blame] | 729 | dev_err(dev->class_dev, "failed to read product id\n"); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 730 | return ret; |
| 731 | } |
Shaun Laing | e4ea910 | 2013-07-26 08:25:34 -0600 | [diff] [blame] | 732 | product = le16_to_cpu(tmp16); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 733 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 734 | ret = dt9812_read_info(dev, 5, &tmp16, sizeof(tmp16)); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 735 | if (ret) { |
H Hartley Sweeten | 056254f | 2013-05-14 14:34:36 -0700 | [diff] [blame] | 736 | dev_err(dev->class_dev, "failed to read device id\n"); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 737 | return ret; |
| 738 | } |
| 739 | devpriv->device = le16_to_cpu(tmp16); |
| 740 | |
Shaun Laing | e4ea910 | 2013-07-26 08:25:34 -0600 | [diff] [blame] | 741 | ret = dt9812_read_info(dev, 7, &tmp32, sizeof(tmp32)); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 742 | if (ret) { |
H Hartley Sweeten | 056254f | 2013-05-14 14:34:36 -0700 | [diff] [blame] | 743 | dev_err(dev->class_dev, "failed to read serial number\n"); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 744 | return ret; |
| 745 | } |
Shaun Laing | e4ea910 | 2013-07-26 08:25:34 -0600 | [diff] [blame] | 746 | serial = le32_to_cpu(tmp32); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 747 | |
| 748 | /* let the user know what node this device is now attached to */ |
H Hartley Sweeten | 056254f | 2013-05-14 14:34:36 -0700 | [diff] [blame] | 749 | dev_info(dev->class_dev, "USB DT9812 (%4.4x.%4.4x.%4.4x) #0x%8.8x\n", |
H Hartley Sweeten | 421b42a | 2013-05-14 14:30:59 -0700 | [diff] [blame] | 750 | vendor, product, devpriv->device, serial); |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 751 | |
H Hartley Sweeten | 9a054c2 | 2013-05-14 14:36:11 -0700 | [diff] [blame] | 752 | if (devpriv->device != DT9812_DEVID_DT9812_10 && |
| 753 | devpriv->device != DT9812_DEVID_DT9812_2PT5) { |
| 754 | dev_err(dev->class_dev, "Unsupported device!\n"); |
| 755 | return -EINVAL; |
| 756 | } |
| 757 | |
H Hartley Sweeten | 8db1eba | 2013-05-14 14:29:40 -0700 | [diff] [blame] | 758 | return 0; |
| 759 | } |
| 760 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 761 | static int dt9812_auto_attach(struct comedi_device *dev, |
| 762 | unsigned long context) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 763 | { |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 764 | struct usb_interface *intf = comedi_to_usb_interface(dev); |
H Hartley Sweeten | 415227c | 2013-05-14 14:21:08 -0700 | [diff] [blame] | 765 | struct dt9812_private *devpriv; |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame] | 766 | struct comedi_subdevice *s; |
H Hartley Sweeten | 135a000 | 2013-05-14 14:28:26 -0700 | [diff] [blame] | 767 | bool is_unipolar; |
H Hartley Sweeten | 8b6c569 | 2012-06-12 11:59:33 -0700 | [diff] [blame] | 768 | int ret; |
H Hartley Sweeten | acc5fe2 | 2014-08-25 16:04:19 -0700 | [diff] [blame] | 769 | int i; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 770 | |
H Hartley Sweeten | 0bdab50 | 2013-06-24 16:55:44 -0700 | [diff] [blame] | 771 | devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); |
H Hartley Sweeten | c34fa26 | 2012-10-23 13:22:37 -0700 | [diff] [blame] | 772 | if (!devpriv) |
| 773 | return -ENOMEM; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 774 | |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 775 | mutex_init(&devpriv->mut); |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 776 | usb_set_intfdata(intf, devpriv); |
Greg Kroah-Hartman | f52a8af | 2008-11-18 11:05:04 -0800 | [diff] [blame] | 777 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 778 | ret = dt9812_find_endpoints(dev); |
| 779 | if (ret) |
| 780 | return ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 781 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 782 | ret = dt9812_reset_device(dev); |
| 783 | if (ret) |
| 784 | return ret; |
H Hartley Sweeten | 1415003 | 2013-05-14 14:22:11 -0700 | [diff] [blame] | 785 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 786 | is_unipolar = (devpriv->device == DT9812_DEVID_DT9812_2PT5); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 787 | |
H Hartley Sweeten | 8b6c569 | 2012-06-12 11:59:33 -0700 | [diff] [blame] | 788 | ret = comedi_alloc_subdevices(dev, 4); |
| 789 | if (ret) |
| 790 | return ret; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 791 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 792 | /* Digital Input subdevice */ |
H Hartley Sweeten | 3a20789 | 2012-09-05 18:42:02 -0700 | [diff] [blame] | 793 | s = &dev->subdevices[0]; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 794 | s->type = COMEDI_SUBD_DI; |
| 795 | s->subdev_flags = SDF_READABLE; |
| 796 | s->n_chan = 8; |
| 797 | s->maxdata = 1; |
| 798 | s->range_table = &range_digital; |
H Hartley Sweeten | e81eaba | 2013-05-14 14:32:17 -0700 | [diff] [blame] | 799 | s->insn_bits = dt9812_di_insn_bits; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 800 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 801 | /* Digital Output subdevice */ |
H Hartley Sweeten | 3a20789 | 2012-09-05 18:42:02 -0700 | [diff] [blame] | 802 | s = &dev->subdevices[1]; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 803 | s->type = COMEDI_SUBD_DO; |
H Hartley Sweeten | ef49d83 | 2014-10-30 11:19:34 -0700 | [diff] [blame] | 804 | s->subdev_flags = SDF_WRITABLE; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 805 | s->n_chan = 8; |
| 806 | s->maxdata = 1; |
| 807 | s->range_table = &range_digital; |
H Hartley Sweeten | 36c973d | 2013-05-14 14:32:42 -0700 | [diff] [blame] | 808 | s->insn_bits = dt9812_do_insn_bits; |
H Hartley Sweeten | 135a000 | 2013-05-14 14:28:26 -0700 | [diff] [blame] | 809 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 810 | /* Analog Input subdevice */ |
H Hartley Sweeten | 3a20789 | 2012-09-05 18:42:02 -0700 | [diff] [blame] | 811 | s = &dev->subdevices[2]; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 812 | s->type = COMEDI_SUBD_AI; |
| 813 | s->subdev_flags = SDF_READABLE | SDF_GROUND; |
| 814 | s->n_chan = 8; |
| 815 | s->maxdata = 0x0fff; |
| 816 | s->range_table = is_unipolar ? &range_unipolar2_5 : &range_bipolar10; |
H Hartley Sweeten | 83a69f5 | 2013-05-14 14:33:09 -0700 | [diff] [blame] | 817 | s->insn_read = dt9812_ai_insn_read; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 818 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 819 | /* Analog Output subdevice */ |
H Hartley Sweeten | 3a20789 | 2012-09-05 18:42:02 -0700 | [diff] [blame] | 820 | s = &dev->subdevices[3]; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 821 | s->type = COMEDI_SUBD_AO; |
H Hartley Sweeten | ef49d83 | 2014-10-30 11:19:34 -0700 | [diff] [blame] | 822 | s->subdev_flags = SDF_WRITABLE; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 823 | s->n_chan = 2; |
| 824 | s->maxdata = 0x0fff; |
| 825 | s->range_table = is_unipolar ? &range_unipolar2_5 : &range_bipolar10; |
H Hartley Sweeten | 99928e6 | 2013-05-14 14:33:53 -0700 | [diff] [blame] | 826 | s->insn_write = dt9812_ao_insn_write; |
H Hartley Sweeten | e79f18e | 2013-05-14 14:33:30 -0700 | [diff] [blame] | 827 | s->insn_read = dt9812_ao_insn_read; |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 828 | |
H Hartley Sweeten | acc5fe2 | 2014-08-25 16:04:19 -0700 | [diff] [blame] | 829 | ret = comedi_alloc_subdev_readback(s); |
| 830 | if (ret) |
| 831 | return ret; |
| 832 | |
| 833 | for (i = 0; i < s->n_chan; i++) |
| 834 | s->readback[i] = is_unipolar ? 0x0000 : 0x0800; |
H Hartley Sweeten | 135a000 | 2013-05-14 14:28:26 -0700 | [diff] [blame] | 835 | |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 836 | return 0; |
| 837 | } |
| 838 | |
H Hartley Sweeten | 484ecc9 | 2012-05-17 17:11:14 -0700 | [diff] [blame] | 839 | static void dt9812_detach(struct comedi_device *dev) |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 840 | { |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 841 | struct usb_interface *intf = comedi_to_usb_interface(dev); |
H Hartley Sweeten | 1415003 | 2013-05-14 14:22:11 -0700 | [diff] [blame] | 842 | struct dt9812_private *devpriv = dev->private; |
| 843 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 844 | if (!devpriv) |
| 845 | return; |
| 846 | |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 847 | mutex_lock(&devpriv->mut); |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 848 | |
| 849 | usb_set_intfdata(intf, NULL); |
| 850 | |
Ksenija Stanojevic | 9faa310 | 2015-10-13 19:08:03 +0200 | [diff] [blame] | 851 | mutex_unlock(&devpriv->mut); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 852 | } |
| 853 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 854 | static struct comedi_driver dt9812_driver = { |
| 855 | .driver_name = "dt9812", |
| 856 | .module = THIS_MODULE, |
| 857 | .auto_attach = dt9812_auto_attach, |
| 858 | .detach = dt9812_detach, |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 859 | }; |
| 860 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 861 | static int dt9812_usb_probe(struct usb_interface *intf, |
| 862 | const struct usb_device_id *id) |
H Hartley Sweeten | df785c7 | 2013-05-14 14:20:43 -0700 | [diff] [blame] | 863 | { |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 864 | return comedi_usb_auto_config(intf, &dt9812_driver, id->driver_info); |
H Hartley Sweeten | df785c7 | 2013-05-14 14:20:43 -0700 | [diff] [blame] | 865 | } |
| 866 | |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 867 | static const struct usb_device_id dt9812_usb_table[] = { |
H Hartley Sweeten | df785c7 | 2013-05-14 14:20:43 -0700 | [diff] [blame] | 868 | { USB_DEVICE(0x0867, 0x9812) }, |
| 869 | { } |
| 870 | }; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 871 | MODULE_DEVICE_TABLE(usb, dt9812_usb_table); |
H Hartley Sweeten | df785c7 | 2013-05-14 14:20:43 -0700 | [diff] [blame] | 872 | |
| 873 | static struct usb_driver dt9812_usb_driver = { |
| 874 | .name = "dt9812", |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 875 | .id_table = dt9812_usb_table, |
| 876 | .probe = dt9812_usb_probe, |
| 877 | .disconnect = comedi_usb_auto_unconfig, |
H Hartley Sweeten | df785c7 | 2013-05-14 14:20:43 -0700 | [diff] [blame] | 878 | }; |
H Hartley Sweeten | b78750c | 2013-05-14 14:30:20 -0700 | [diff] [blame] | 879 | module_comedi_usb_driver(dt9812_driver, dt9812_usb_driver); |
Anders Blomdell | 63274cd | 2008-11-14 14:52:21 -0800 | [diff] [blame] | 880 | |
| 881 | MODULE_AUTHOR("Anders Blomdell <anders.blomdell@control.lth.se>"); |
| 882 | MODULE_DESCRIPTION("Comedi DT9812 driver"); |
| 883 | MODULE_LICENSE("GPL"); |