1 // SPDX-License-Identifier: GPL-2.0-only
11  * mcp4131	1	129		5, 10, 50, 100
170 	int address = chan->channel;  in mcp4131_read_raw()
174 		mutex_lock(&data->lock);  in mcp4131_read_raw()
176 		data->buf[0] = (address << MCP4131_WIPER_SHIFT) | MCP4131_READ;  in mcp4131_read_raw()
177 		data->buf[1] = 0;  in mcp4131_read_raw()
179 		err = mcp4131_read(data->spi, data->buf, 2);  in mcp4131_read_raw()
181 			mutex_unlock(&data->lock);  in mcp4131_read_raw()
186 		if (!MCP4131_CMDERR(data->buf)) {  in mcp4131_read_raw()
187 			mutex_unlock(&data->lock);  in mcp4131_read_raw()
188 			return -EIO;  in mcp4131_read_raw()
191 		*val = MCP4131_RAW(data->buf);  in mcp4131_read_raw()
192 		mutex_unlock(&data->lock);  in mcp4131_read_raw()
197 		*val = 1000 * data->cfg->kohms;  in mcp4131_read_raw()
198 		*val2 = data->cfg->max_pos;  in mcp4131_read_raw()
202 	return -EINVAL;  in mcp4131_read_raw()
211 	int address = chan->channel << MCP4131_WIPER_SHIFT;  in mcp4131_write_raw()
215 		if (val > data->cfg->max_pos || val < 0)  in mcp4131_write_raw()
216 			return -EINVAL;  in mcp4131_write_raw()
220 		return -EINVAL;  in mcp4131_write_raw()
223 	mutex_lock(&data->lock);  in mcp4131_write_raw()
225 	data->buf[0] = address << MCP4131_WIPER_SHIFT;  in mcp4131_write_raw()
226 	data->buf[0] |= MCP4131_WRITE | (val >> 8);  in mcp4131_write_raw()
227 	data->buf[1] = val & 0xFF; /* 8 bits here */  in mcp4131_write_raw()
229 	err = spi_write(data->spi, data->buf, 2);  in mcp4131_write_raw()
230 	mutex_unlock(&data->lock);  in mcp4131_write_raw()
243 	struct device *dev = &spi->dev;  in mcp4131_probe()
250 		return -ENOMEM;  in mcp4131_probe()
254 	data->spi = spi;  in mcp4131_probe()
255 	data->cfg = device_get_match_data(&spi->dev);  in mcp4131_probe()
256 	if (!data->cfg) {  in mcp4131_probe()
257 		devid = spi_get_device_id(spi)->driver_data;  in mcp4131_probe()
258 		data->cfg = &mcp4131_cfg[devid];  in mcp4131_probe()
261 	mutex_init(&data->lock);  in mcp4131_probe()
263 	indio_dev->info = &mcp4131_info;  in mcp4131_probe()
264 	indio_dev->channels = mcp4131_channels;  in mcp4131_probe()
265 	indio_dev->num_channels = data->cfg->wipers;  in mcp4131_probe()
266 	indio_dev->name = spi_get_device_id(spi)->name;  in mcp4131_probe()
270 		dev_info(&spi->dev, "Unable to register %s\n", indio_dev->name);  in mcp4131_probe()
278 	{ .compatible = "microchip,mcp4131-502",
280 	{ .compatible = "microchip,mcp4131-103",
282 	{ .compatible = "microchip,mcp4131-503",
284 	{ .compatible = "microchip,mcp4131-104",
286 	{ .compatible = "microchip,mcp4132-502",
288 	{ .compatible = "microchip,mcp4132-103",
290 	{ .compatible = "microchip,mcp4132-503",
292 	{ .compatible = "microchip,mcp4132-104",
294 	{ .compatible = "microchip,mcp4141-502",
296 	{ .compatible = "microchip,mcp4141-103",
298 	{ .compatible = "microchip,mcp4141-503",
300 	{ .compatible = "microchip,mcp4141-104",
302 	{ .compatible = "microchip,mcp4142-502",
304 	{ .compatible = "microchip,mcp4142-103",
306 	{ .compatible = "microchip,mcp4142-503",
308 	{ .compatible = "microchip,mcp4142-104",
310 	{ .compatible = "microchip,mcp4151-502",
312 	{ .compatible = "microchip,mcp4151-103",
314 	{ .compatible = "microchip,mcp4151-503",
316 	{ .compatible = "microchip,mcp4151-104",
318 	{ .compatible = "microchip,mcp4152-502",
320 	{ .compatible = "microchip,mcp4152-103",
322 	{ .compatible = "microchip,mcp4152-503",
324 	{ .compatible = "microchip,mcp4152-104",
326 	{ .compatible = "microchip,mcp4161-502",
328 	{ .compatible = "microchip,mcp4161-103",
330 	{ .compatible = "microchip,mcp4161-503",
332 	{ .compatible = "microchip,mcp4161-104",
334 	{ .compatible = "microchip,mcp4162-502",
336 	{ .compatible = "microchip,mcp4162-103",
338 	{ .compatible = "microchip,mcp4162-503",
340 	{ .compatible = "microchip,mcp4162-104",
342 	{ .compatible = "microchip,mcp4231-502",
344 	{ .compatible = "microchip,mcp4231-103",
346 	{ .compatible = "microchip,mcp4231-503",
348 	{ .compatible = "microchip,mcp4231-104",
350 	{ .compatible = "microchip,mcp4232-502",
352 	{ .compatible = "microchip,mcp4232-103",
354 	{ .compatible = "microchip,mcp4232-503",
356 	{ .compatible = "microchip,mcp4232-104",
358 	{ .compatible = "microchip,mcp4241-502",
360 	{ .compatible = "microchip,mcp4241-103",
362 	{ .compatible = "microchip,mcp4241-503",
364 	{ .compatible = "microchip,mcp4241-104",
366 	{ .compatible = "microchip,mcp4242-502",
368 	{ .compatible = "microchip,mcp4242-103",
370 	{ .compatible = "microchip,mcp4242-503",
372 	{ .compatible = "microchip,mcp4242-104",
374 	{ .compatible = "microchip,mcp4251-502",
376 	{ .compatible = "microchip,mcp4251-103",
378 	{ .compatible = "microchip,mcp4251-503",
380 	{ .compatible = "microchip,mcp4251-104",
382 	{ .compatible = "microchip,mcp4252-502",
384 	{ .compatible = "microchip,mcp4252-103",
386 	{ .compatible = "microchip,mcp4252-503",
388 	{ .compatible = "microchip,mcp4252-104",
390 	{ .compatible = "microchip,mcp4261-502",
392 	{ .compatible = "microchip,mcp4261-103",
394 	{ .compatible = "microchip,mcp4261-503",
396 	{ .compatible = "microchip,mcp4261-104",
398 	{ .compatible = "microchip,mcp4262-502",
400 	{ .compatible = "microchip,mcp4262-103",
402 	{ .compatible = "microchip,mcp4262-503",
404 	{ .compatible = "microchip,mcp4262-104",
411 	{ "mcp4131-502", MCP413x_502 },
412 	{ "mcp4131-103", MCP413x_103 },
413 	{ "mcp4131-503", MCP413x_503 },
414 	{ "mcp4131-104", MCP413x_104 },
415 	{ "mcp4132-502", MCP413x_502 },
416 	{ "mcp4132-103", MCP413x_103 },
417 	{ "mcp4132-503", MCP413x_503 },
418 	{ "mcp4132-104", MCP413x_104 },
419 	{ "mcp4141-502", MCP414x_502 },
420 	{ "mcp4141-103", MCP414x_103 },
421 	{ "mcp4141-503", MCP414x_503 },
422 	{ "mcp4141-104", MCP414x_104 },
423 	{ "mcp4142-502", MCP414x_502 },
424 	{ "mcp4142-103", MCP414x_103 },
425 	{ "mcp4142-503", MCP414x_503 },
426 	{ "mcp4142-104", MCP414x_104 },
427 	{ "mcp4151-502", MCP415x_502 },
428 	{ "mcp4151-103", MCP415x_103 },
429 	{ "mcp4151-503", MCP415x_503 },
430 	{ "mcp4151-104", MCP415x_104 },
431 	{ "mcp4152-502", MCP415x_502 },
432 	{ "mcp4152-103", MCP415x_103 },
433 	{ "mcp4152-503", MCP415x_503 },
434 	{ "mcp4152-104", MCP415x_104 },
435 	{ "mcp4161-502", MCP416x_502 },
436 	{ "mcp4161-103", MCP416x_103 },
437 	{ "mcp4161-503", MCP416x_503 },
438 	{ "mcp4161-104", MCP416x_104 },
439 	{ "mcp4162-502", MCP416x_502 },
440 	{ "mcp4162-103", MCP416x_103 },
441 	{ "mcp4162-503", MCP416x_503 },
442 	{ "mcp4162-104", MCP416x_104 },
443 	{ "mcp4231-502", MCP423x_502 },
444 	{ "mcp4231-103", MCP423x_103 },
445 	{ "mcp4231-503", MCP423x_503 },
446 	{ "mcp4231-104", MCP423x_104 },
447 	{ "mcp4232-502", MCP423x_502 },
448 	{ "mcp4232-103", MCP423x_103 },
449 	{ "mcp4232-503", MCP423x_503 },
450 	{ "mcp4232-104", MCP423x_104 },
451 	{ "mcp4241-502", MCP424x_502 },
452 	{ "mcp4241-103", MCP424x_103 },
453 	{ "mcp4241-503", MCP424x_503 },
454 	{ "mcp4241-104", MCP424x_104 },
455 	{ "mcp4242-502", MCP424x_502 },
456 	{ "mcp4242-103", MCP424x_103 },
457 	{ "mcp4242-503", MCP424x_503 },
458 	{ "mcp4242-104", MCP424x_104 },
459 	{ "mcp4251-502", MCP425x_502 },
460 	{ "mcp4251-103", MCP425x_103 },
461 	{ "mcp4251-503", MCP425x_503 },
462 	{ "mcp4251-104", MCP425x_104 },
463 	{ "mcp4252-502", MCP425x_502 },
464 	{ "mcp4252-103", MCP425x_103 },
465 	{ "mcp4252-503", MCP425x_503 },
466 	{ "mcp4252-104", MCP425x_104 },
467 	{ "mcp4261-502", MCP426x_502 },
468 	{ "mcp4261-103", MCP426x_103 },
469 	{ "mcp4261-503", MCP426x_503 },
470 	{ "mcp4261-104", MCP426x_104 },
471 	{ "mcp4262-502", MCP426x_502 },
472 	{ "mcp4262-103", MCP426x_103 },
473 	{ "mcp4262-503", MCP426x_503 },
474 	{ "mcp4262-104", MCP426x_104 },
481 		.name	= "mcp4131",
491 MODULE_DESCRIPTION("MCP4131 digital potentiometer");