Vivien Didelot | 759f5f3 | 2012-12-07 21:36:34 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Digital I/O driver for Technologic Systems TS-5500 |
| 3 | * |
| 4 | * Copyright (c) 2012 Savoir-faire Linux Inc. |
| 5 | * Vivien Didelot <vivien.didelot@savoirfairelinux.com> |
| 6 | * |
| 7 | * Technologic Systems platforms have pin blocks, exposing several Digital |
| 8 | * Input/Output lines (DIO). This driver aims to support single pin blocks. |
| 9 | * In that sense, the support is not limited to the TS-5500 blocks. |
| 10 | * Actually, the following platforms have DIO support: |
| 11 | * |
| 12 | * TS-5500: |
| 13 | * Documentation: http://wiki.embeddedarm.com/wiki/TS-5500 |
| 14 | * Blocks: DIO1, DIO2 and LCD port. |
| 15 | * |
| 16 | * TS-5600: |
| 17 | * Documentation: http://wiki.embeddedarm.com/wiki/TS-5600 |
| 18 | * Blocks: LCD port (identical to TS-5500 LCD). |
| 19 | * |
| 20 | * This program is free software; you can redistribute it and/or modify |
| 21 | * it under the terms of the GNU General Public License version 2 as |
| 22 | * published by the Free Software Foundation. |
| 23 | */ |
| 24 | |
| 25 | #include <linux/bitops.h> |
| 26 | #include <linux/gpio.h> |
| 27 | #include <linux/io.h> |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/platform_data/gpio-ts5500.h> |
| 30 | #include <linux/platform_device.h> |
| 31 | #include <linux/slab.h> |
| 32 | |
| 33 | /* List of supported Technologic Systems platforms DIO blocks */ |
| 34 | enum ts5500_blocks { TS5500_DIO1, TS5500_DIO2, TS5500_LCD, TS5600_LCD }; |
| 35 | |
| 36 | struct ts5500_priv { |
| 37 | const struct ts5500_dio *pinout; |
| 38 | struct gpio_chip gpio_chip; |
| 39 | spinlock_t lock; |
| 40 | bool strap; |
| 41 | u8 hwirq; |
| 42 | }; |
| 43 | |
| 44 | /* |
| 45 | * Hex 7D is used to control several blocks (e.g. DIO2 and LCD port). |
| 46 | * This flag ensures that the region has been requested by this driver. |
| 47 | */ |
| 48 | static bool hex7d_reserved; |
| 49 | |
| 50 | /* |
| 51 | * This structure is used to describe capabilities of DIO lines, |
| 52 | * such as available directions and connected interrupt (if any). |
| 53 | */ |
| 54 | struct ts5500_dio { |
| 55 | const u8 value_addr; |
| 56 | const u8 value_mask; |
| 57 | const u8 control_addr; |
| 58 | const u8 control_mask; |
| 59 | const bool no_input; |
| 60 | const bool no_output; |
| 61 | const u8 irq; |
| 62 | }; |
| 63 | |
| 64 | #define TS5500_DIO_IN_OUT(vaddr, vbit, caddr, cbit) \ |
| 65 | { \ |
| 66 | .value_addr = vaddr, \ |
| 67 | .value_mask = BIT(vbit), \ |
| 68 | .control_addr = caddr, \ |
| 69 | .control_mask = BIT(cbit), \ |
| 70 | } |
| 71 | |
| 72 | #define TS5500_DIO_IN(addr, bit) \ |
| 73 | { \ |
| 74 | .value_addr = addr, \ |
| 75 | .value_mask = BIT(bit), \ |
| 76 | .no_output = true, \ |
| 77 | } |
| 78 | |
| 79 | #define TS5500_DIO_IN_IRQ(addr, bit, _irq) \ |
| 80 | { \ |
| 81 | .value_addr = addr, \ |
| 82 | .value_mask = BIT(bit), \ |
| 83 | .no_output = true, \ |
| 84 | .irq = _irq, \ |
| 85 | } |
| 86 | |
| 87 | #define TS5500_DIO_OUT(addr, bit) \ |
| 88 | { \ |
| 89 | .value_addr = addr, \ |
| 90 | .value_mask = BIT(bit), \ |
| 91 | .no_input = true, \ |
| 92 | } |
| 93 | |
| 94 | /* |
| 95 | * Input/Output DIO lines are programmed in groups of 4. Their values are |
| 96 | * available through 4 consecutive bits in a value port, whereas the direction |
| 97 | * of these 4 lines is driven by only 1 bit in a control port. |
| 98 | */ |
| 99 | #define TS5500_DIO_GROUP(vaddr, vbitfrom, caddr, cbit) \ |
| 100 | TS5500_DIO_IN_OUT(vaddr, vbitfrom + 0, caddr, cbit), \ |
| 101 | TS5500_DIO_IN_OUT(vaddr, vbitfrom + 1, caddr, cbit), \ |
| 102 | TS5500_DIO_IN_OUT(vaddr, vbitfrom + 2, caddr, cbit), \ |
| 103 | TS5500_DIO_IN_OUT(vaddr, vbitfrom + 3, caddr, cbit) |
| 104 | |
| 105 | /* |
| 106 | * TS-5500 DIO1 block |
| 107 | * |
| 108 | * value control dir hw |
| 109 | * addr bit addr bit in out irq name pin offset |
| 110 | * |
| 111 | * 0x7b 0 0x7a 0 x x DIO1_0 1 0 |
| 112 | * 0x7b 1 0x7a 0 x x DIO1_1 3 1 |
| 113 | * 0x7b 2 0x7a 0 x x DIO1_2 5 2 |
| 114 | * 0x7b 3 0x7a 0 x x DIO1_3 7 3 |
| 115 | * 0x7b 4 0x7a 1 x x DIO1_4 9 4 |
| 116 | * 0x7b 5 0x7a 1 x x DIO1_5 11 5 |
| 117 | * 0x7b 6 0x7a 1 x x DIO1_6 13 6 |
| 118 | * 0x7b 7 0x7a 1 x x DIO1_7 15 7 |
| 119 | * 0x7c 0 0x7a 5 x x DIO1_8 4 8 |
| 120 | * 0x7c 1 0x7a 5 x x DIO1_9 6 9 |
| 121 | * 0x7c 2 0x7a 5 x x DIO1_10 8 10 |
| 122 | * 0x7c 3 0x7a 5 x x DIO1_11 10 11 |
| 123 | * 0x7c 4 x DIO1_12 12 12 |
| 124 | * 0x7c 5 x 7 DIO1_13 14 13 |
| 125 | */ |
| 126 | static const struct ts5500_dio ts5500_dio1[] = { |
| 127 | TS5500_DIO_GROUP(0x7b, 0, 0x7a, 0), |
| 128 | TS5500_DIO_GROUP(0x7b, 4, 0x7a, 1), |
| 129 | TS5500_DIO_GROUP(0x7c, 0, 0x7a, 5), |
| 130 | TS5500_DIO_IN(0x7c, 4), |
| 131 | TS5500_DIO_IN_IRQ(0x7c, 5, 7), |
| 132 | }; |
| 133 | |
| 134 | /* |
| 135 | * TS-5500 DIO2 block |
| 136 | * |
| 137 | * value control dir hw |
| 138 | * addr bit addr bit in out irq name pin offset |
| 139 | * |
| 140 | * 0x7e 0 0x7d 0 x x DIO2_0 1 0 |
| 141 | * 0x7e 1 0x7d 0 x x DIO2_1 3 1 |
| 142 | * 0x7e 2 0x7d 0 x x DIO2_2 5 2 |
| 143 | * 0x7e 3 0x7d 0 x x DIO2_3 7 3 |
| 144 | * 0x7e 4 0x7d 1 x x DIO2_4 9 4 |
| 145 | * 0x7e 5 0x7d 1 x x DIO2_5 11 5 |
| 146 | * 0x7e 6 0x7d 1 x x DIO2_6 13 6 |
| 147 | * 0x7e 7 0x7d 1 x x DIO2_7 15 7 |
| 148 | * 0x7f 0 0x7d 5 x x DIO2_8 4 8 |
| 149 | * 0x7f 1 0x7d 5 x x DIO2_9 6 9 |
| 150 | * 0x7f 2 0x7d 5 x x DIO2_10 8 10 |
| 151 | * 0x7f 3 0x7d 5 x x DIO2_11 10 11 |
| 152 | * 0x7f 4 x 6 DIO2_13 14 12 |
| 153 | */ |
| 154 | static const struct ts5500_dio ts5500_dio2[] = { |
| 155 | TS5500_DIO_GROUP(0x7e, 0, 0x7d, 0), |
| 156 | TS5500_DIO_GROUP(0x7e, 4, 0x7d, 1), |
| 157 | TS5500_DIO_GROUP(0x7f, 0, 0x7d, 5), |
| 158 | TS5500_DIO_IN_IRQ(0x7f, 4, 6), |
| 159 | }; |
| 160 | |
| 161 | /* |
| 162 | * TS-5500 LCD port used as DIO block |
| 163 | * TS-5600 LCD port is identical |
| 164 | * |
| 165 | * value control dir hw |
| 166 | * addr bit addr bit in out irq name pin offset |
| 167 | * |
| 168 | * 0x72 0 0x7d 2 x x LCD_0 8 0 |
| 169 | * 0x72 1 0x7d 2 x x LCD_1 7 1 |
| 170 | * 0x72 2 0x7d 2 x x LCD_2 10 2 |
| 171 | * 0x72 3 0x7d 2 x x LCD_3 9 3 |
| 172 | * 0x72 4 0x7d 3 x x LCD_4 12 4 |
| 173 | * 0x72 5 0x7d 3 x x LCD_5 11 5 |
| 174 | * 0x72 6 0x7d 3 x x LCD_6 14 6 |
| 175 | * 0x72 7 0x7d 3 x x LCD_7 13 7 |
| 176 | * 0x73 0 x LCD_EN 5 8 |
| 177 | * 0x73 6 x LCD_WR 6 9 |
| 178 | * 0x73 7 x 1 LCD_RS 3 10 |
| 179 | */ |
| 180 | static const struct ts5500_dio ts5500_lcd[] = { |
| 181 | TS5500_DIO_GROUP(0x72, 0, 0x7d, 2), |
| 182 | TS5500_DIO_GROUP(0x72, 4, 0x7d, 3), |
| 183 | TS5500_DIO_OUT(0x73, 0), |
| 184 | TS5500_DIO_IN(0x73, 6), |
| 185 | TS5500_DIO_IN_IRQ(0x73, 7, 1), |
| 186 | }; |
| 187 | |
| 188 | static inline struct ts5500_priv *ts5500_gc_to_priv(struct gpio_chip *chip) |
| 189 | { |
| 190 | return container_of(chip, struct ts5500_priv, gpio_chip); |
| 191 | } |
| 192 | |
| 193 | static inline void ts5500_set_mask(u8 mask, u8 addr) |
| 194 | { |
| 195 | u8 val = inb(addr); |
| 196 | val |= mask; |
| 197 | outb(val, addr); |
| 198 | } |
| 199 | |
| 200 | static inline void ts5500_clear_mask(u8 mask, u8 addr) |
| 201 | { |
| 202 | u8 val = inb(addr); |
| 203 | val &= ~mask; |
| 204 | outb(val, addr); |
| 205 | } |
| 206 | |
| 207 | static int ts5500_gpio_input(struct gpio_chip *chip, unsigned offset) |
| 208 | { |
| 209 | struct ts5500_priv *priv = ts5500_gc_to_priv(chip); |
| 210 | const struct ts5500_dio line = priv->pinout[offset]; |
| 211 | unsigned long flags; |
| 212 | |
| 213 | if (line.no_input) |
| 214 | return -ENXIO; |
| 215 | |
| 216 | if (line.no_output) |
| 217 | return 0; |
| 218 | |
| 219 | spin_lock_irqsave(&priv->lock, flags); |
| 220 | ts5500_clear_mask(line.control_mask, line.control_addr); |
| 221 | spin_unlock_irqrestore(&priv->lock, flags); |
| 222 | |
| 223 | return 0; |
| 224 | } |
| 225 | |
| 226 | static int ts5500_gpio_get(struct gpio_chip *chip, unsigned offset) |
| 227 | { |
| 228 | struct ts5500_priv *priv = ts5500_gc_to_priv(chip); |
| 229 | const struct ts5500_dio line = priv->pinout[offset]; |
| 230 | |
| 231 | return !!(inb(line.value_addr) & line.value_mask); |
| 232 | } |
| 233 | |
| 234 | static int ts5500_gpio_output(struct gpio_chip *chip, unsigned offset, int val) |
| 235 | { |
| 236 | struct ts5500_priv *priv = ts5500_gc_to_priv(chip); |
| 237 | const struct ts5500_dio line = priv->pinout[offset]; |
| 238 | unsigned long flags; |
| 239 | |
| 240 | if (line.no_output) |
| 241 | return -ENXIO; |
| 242 | |
| 243 | spin_lock_irqsave(&priv->lock, flags); |
| 244 | if (!line.no_input) |
| 245 | ts5500_set_mask(line.control_mask, line.control_addr); |
| 246 | |
| 247 | if (val) |
| 248 | ts5500_set_mask(line.value_mask, line.value_addr); |
| 249 | else |
| 250 | ts5500_clear_mask(line.value_mask, line.value_addr); |
| 251 | spin_unlock_irqrestore(&priv->lock, flags); |
| 252 | |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | static void ts5500_gpio_set(struct gpio_chip *chip, unsigned offset, int val) |
| 257 | { |
| 258 | struct ts5500_priv *priv = ts5500_gc_to_priv(chip); |
| 259 | const struct ts5500_dio line = priv->pinout[offset]; |
| 260 | unsigned long flags; |
| 261 | |
| 262 | spin_lock_irqsave(&priv->lock, flags); |
| 263 | if (val) |
| 264 | ts5500_set_mask(line.value_mask, line.value_addr); |
| 265 | else |
| 266 | ts5500_clear_mask(line.value_mask, line.value_addr); |
| 267 | spin_unlock_irqrestore(&priv->lock, flags); |
| 268 | } |
| 269 | |
| 270 | static int ts5500_gpio_to_irq(struct gpio_chip *chip, unsigned offset) |
| 271 | { |
| 272 | struct ts5500_priv *priv = ts5500_gc_to_priv(chip); |
| 273 | const struct ts5500_dio *block = priv->pinout; |
| 274 | const struct ts5500_dio line = block[offset]; |
| 275 | |
| 276 | /* Only one pin is connected to an interrupt */ |
| 277 | if (line.irq) |
| 278 | return line.irq; |
| 279 | |
| 280 | /* As this pin is input-only, we may strap it to another in/out pin */ |
| 281 | if (priv->strap) |
| 282 | return priv->hwirq; |
| 283 | |
| 284 | return -ENXIO; |
| 285 | } |
| 286 | |
| 287 | static int ts5500_enable_irq(struct ts5500_priv *priv) |
| 288 | { |
| 289 | int ret = 0; |
| 290 | unsigned long flags; |
| 291 | |
| 292 | spin_lock_irqsave(&priv->lock, flags); |
| 293 | if (priv->hwirq == 7) |
| 294 | ts5500_set_mask(BIT(7), 0x7a); /* DIO1_13 on IRQ7 */ |
| 295 | else if (priv->hwirq == 6) |
| 296 | ts5500_set_mask(BIT(7), 0x7d); /* DIO2_13 on IRQ6 */ |
| 297 | else if (priv->hwirq == 1) |
| 298 | ts5500_set_mask(BIT(6), 0x7d); /* LCD_RS on IRQ1 */ |
| 299 | else |
| 300 | ret = -EINVAL; |
| 301 | spin_unlock_irqrestore(&priv->lock, flags); |
| 302 | |
| 303 | return ret; |
| 304 | } |
| 305 | |
| 306 | static void ts5500_disable_irq(struct ts5500_priv *priv) |
| 307 | { |
| 308 | unsigned long flags; |
| 309 | |
| 310 | spin_lock_irqsave(&priv->lock, flags); |
| 311 | if (priv->hwirq == 7) |
| 312 | ts5500_clear_mask(BIT(7), 0x7a); /* DIO1_13 on IRQ7 */ |
| 313 | else if (priv->hwirq == 6) |
| 314 | ts5500_clear_mask(BIT(7), 0x7d); /* DIO2_13 on IRQ6 */ |
| 315 | else if (priv->hwirq == 1) |
| 316 | ts5500_clear_mask(BIT(6), 0x7d); /* LCD_RS on IRQ1 */ |
| 317 | else |
| 318 | dev_err(priv->gpio_chip.dev, "invalid hwirq %d\n", priv->hwirq); |
| 319 | spin_unlock_irqrestore(&priv->lock, flags); |
| 320 | } |
| 321 | |
Greg Kroah-Hartman | 0fe763c | 2012-12-21 15:14:44 -0800 | [diff] [blame] | 322 | static int ts5500_dio_probe(struct platform_device *pdev) |
Vivien Didelot | 759f5f3 | 2012-12-07 21:36:34 -0500 | [diff] [blame] | 323 | { |
| 324 | enum ts5500_blocks block = platform_get_device_id(pdev)->driver_data; |
Jingoo Han | e56aee1 | 2013-07-30 17:08:05 +0900 | [diff] [blame] | 325 | struct ts5500_dio_platform_data *pdata = dev_get_platdata(&pdev->dev); |
Vivien Didelot | 759f5f3 | 2012-12-07 21:36:34 -0500 | [diff] [blame] | 326 | struct device *dev = &pdev->dev; |
| 327 | const char *name = dev_name(dev); |
| 328 | struct ts5500_priv *priv; |
| 329 | struct resource *res; |
| 330 | unsigned long flags; |
| 331 | int ret; |
| 332 | |
| 333 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 334 | if (!res) { |
| 335 | dev_err(dev, "missing IRQ resource\n"); |
| 336 | return -EINVAL; |
| 337 | } |
| 338 | |
| 339 | priv = devm_kzalloc(dev, sizeof(struct ts5500_priv), GFP_KERNEL); |
| 340 | if (!priv) |
| 341 | return -ENOMEM; |
| 342 | |
| 343 | platform_set_drvdata(pdev, priv); |
| 344 | priv->hwirq = res->start; |
| 345 | spin_lock_init(&priv->lock); |
| 346 | |
| 347 | priv->gpio_chip.owner = THIS_MODULE; |
| 348 | priv->gpio_chip.label = name; |
| 349 | priv->gpio_chip.dev = dev; |
| 350 | priv->gpio_chip.direction_input = ts5500_gpio_input; |
| 351 | priv->gpio_chip.direction_output = ts5500_gpio_output; |
| 352 | priv->gpio_chip.get = ts5500_gpio_get; |
| 353 | priv->gpio_chip.set = ts5500_gpio_set; |
| 354 | priv->gpio_chip.to_irq = ts5500_gpio_to_irq; |
| 355 | priv->gpio_chip.base = -1; |
| 356 | if (pdata) { |
| 357 | priv->gpio_chip.base = pdata->base; |
| 358 | priv->strap = pdata->strap; |
| 359 | } |
| 360 | |
| 361 | switch (block) { |
| 362 | case TS5500_DIO1: |
| 363 | priv->pinout = ts5500_dio1; |
| 364 | priv->gpio_chip.ngpio = ARRAY_SIZE(ts5500_dio1); |
| 365 | |
| 366 | if (!devm_request_region(dev, 0x7a, 3, name)) { |
| 367 | dev_err(dev, "failed to request %s ports\n", name); |
| 368 | return -EBUSY; |
| 369 | } |
| 370 | break; |
| 371 | case TS5500_DIO2: |
| 372 | priv->pinout = ts5500_dio2; |
| 373 | priv->gpio_chip.ngpio = ARRAY_SIZE(ts5500_dio2); |
| 374 | |
| 375 | if (!devm_request_region(dev, 0x7e, 2, name)) { |
| 376 | dev_err(dev, "failed to request %s ports\n", name); |
| 377 | return -EBUSY; |
| 378 | } |
| 379 | |
| 380 | if (hex7d_reserved) |
| 381 | break; |
| 382 | |
| 383 | if (!devm_request_region(dev, 0x7d, 1, name)) { |
| 384 | dev_err(dev, "failed to request %s 7D\n", name); |
| 385 | return -EBUSY; |
| 386 | } |
| 387 | |
| 388 | hex7d_reserved = true; |
| 389 | break; |
| 390 | case TS5500_LCD: |
| 391 | case TS5600_LCD: |
| 392 | priv->pinout = ts5500_lcd; |
| 393 | priv->gpio_chip.ngpio = ARRAY_SIZE(ts5500_lcd); |
| 394 | |
| 395 | if (!devm_request_region(dev, 0x72, 2, name)) { |
| 396 | dev_err(dev, "failed to request %s ports\n", name); |
| 397 | return -EBUSY; |
| 398 | } |
| 399 | |
| 400 | if (!hex7d_reserved) { |
| 401 | if (!devm_request_region(dev, 0x7d, 1, name)) { |
| 402 | dev_err(dev, "failed to request %s 7D\n", name); |
| 403 | return -EBUSY; |
| 404 | } |
| 405 | |
| 406 | hex7d_reserved = true; |
| 407 | } |
| 408 | |
| 409 | /* Ensure usage of LCD port as DIO */ |
| 410 | spin_lock_irqsave(&priv->lock, flags); |
| 411 | ts5500_clear_mask(BIT(4), 0x7d); |
| 412 | spin_unlock_irqrestore(&priv->lock, flags); |
| 413 | break; |
| 414 | } |
| 415 | |
| 416 | ret = gpiochip_add(&priv->gpio_chip); |
| 417 | if (ret) { |
| 418 | dev_err(dev, "failed to register the gpio chip\n"); |
| 419 | return ret; |
| 420 | } |
| 421 | |
| 422 | ret = ts5500_enable_irq(priv); |
| 423 | if (ret) { |
| 424 | dev_err(dev, "invalid interrupt %d\n", priv->hwirq); |
| 425 | goto cleanup; |
| 426 | } |
| 427 | |
| 428 | return 0; |
| 429 | cleanup: |
abdoulaye berthe | 9f5132a | 2014-07-12 22:30:12 +0200 | [diff] [blame^] | 430 | gpiochip_remove(&priv->gpio_chip); |
Vivien Didelot | 759f5f3 | 2012-12-07 21:36:34 -0500 | [diff] [blame] | 431 | return ret; |
| 432 | } |
| 433 | |
Greg Kroah-Hartman | 0fe763c | 2012-12-21 15:14:44 -0800 | [diff] [blame] | 434 | static int ts5500_dio_remove(struct platform_device *pdev) |
Vivien Didelot | 759f5f3 | 2012-12-07 21:36:34 -0500 | [diff] [blame] | 435 | { |
| 436 | struct ts5500_priv *priv = platform_get_drvdata(pdev); |
| 437 | |
| 438 | ts5500_disable_irq(priv); |
abdoulaye berthe | 9f5132a | 2014-07-12 22:30:12 +0200 | [diff] [blame^] | 439 | gpiochip_remove(&priv->gpio_chip); |
| 440 | return 0; |
Vivien Didelot | 759f5f3 | 2012-12-07 21:36:34 -0500 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | static struct platform_device_id ts5500_dio_ids[] = { |
| 444 | { "ts5500-dio1", TS5500_DIO1 }, |
| 445 | { "ts5500-dio2", TS5500_DIO2 }, |
| 446 | { "ts5500-dio-lcd", TS5500_LCD }, |
| 447 | { "ts5600-dio-lcd", TS5600_LCD }, |
| 448 | { } |
| 449 | }; |
| 450 | MODULE_DEVICE_TABLE(platform, ts5500_dio_ids); |
| 451 | |
| 452 | static struct platform_driver ts5500_dio_driver = { |
| 453 | .driver = { |
| 454 | .name = "ts5500-dio", |
| 455 | .owner = THIS_MODULE, |
| 456 | }, |
| 457 | .probe = ts5500_dio_probe, |
Greg Kroah-Hartman | 0fe763c | 2012-12-21 15:14:44 -0800 | [diff] [blame] | 458 | .remove = ts5500_dio_remove, |
Vivien Didelot | 759f5f3 | 2012-12-07 21:36:34 -0500 | [diff] [blame] | 459 | .id_table = ts5500_dio_ids, |
| 460 | }; |
| 461 | |
| 462 | module_platform_driver(ts5500_dio_driver); |
| 463 | |
| 464 | MODULE_LICENSE("GPL"); |
| 465 | MODULE_AUTHOR("Savoir-faire Linux Inc. <kernel@savoirfairelinux.com>"); |
| 466 | MODULE_DESCRIPTION("Technologic Systems TS-5500 Digital I/O driver"); |