2  * Digital I/O driver for Technologic Systems TS-5500
4  * Copyright (c) 2012 Savoir-faire Linux Inc.
9  * In that sense, the support is not limited to the TS-5500 blocks.
12  * TS-5500:
13  *   Documentation: http://wiki.embeddedarm.com/wiki/TS-5500
16  * TS-5600:
17  *   Documentation: http://wiki.embeddedarm.com/wiki/TS-5600
18  *   Blocks: LCD port (identical to TS-5500 LCD).
29 #include <linux/platform_data/gpio-ts5500.h>
106  * TS-5500 DIO1 block
109  *  addr bit addr bit in out irq name     pin offset
135  * TS-5500 DIO2 block
138  *  addr bit addr bit in out irq name     pin offset
162  * TS-5500 LCD port used as DIO block
163  * TS-5600 LCD port is identical
166  *  addr bit addr bit in out irq name    pin offset
205 	const struct ts5500_dio line = priv->pinout[offset];  in ts5500_gpio_input()  local
208 	if (line.no_input)  in ts5500_gpio_input()
209 		return -ENXIO;  in ts5500_gpio_input()
211 	if (line.no_output)  in ts5500_gpio_input()
214 	spin_lock_irqsave(&priv->lock, flags);  in ts5500_gpio_input()
215 	ts5500_clear_mask(line.control_mask, line.control_addr);  in ts5500_gpio_input()
216 	spin_unlock_irqrestore(&priv->lock, flags);  in ts5500_gpio_input()
224 	const struct ts5500_dio line = priv->pinout[offset];  in ts5500_gpio_get()  local
226 	return !!(inb(line.value_addr) & line.value_mask);  in ts5500_gpio_get()
232 	const struct ts5500_dio line = priv->pinout[offset];  in ts5500_gpio_output()  local
235 	if (line.no_output)  in ts5500_gpio_output()
236 		return -ENXIO;  in ts5500_gpio_output()
238 	spin_lock_irqsave(&priv->lock, flags);  in ts5500_gpio_output()
239 	if (!line.no_input)  in ts5500_gpio_output()
240 		ts5500_set_mask(line.control_mask, line.control_addr);  in ts5500_gpio_output()
243 		ts5500_set_mask(line.value_mask, line.value_addr);  in ts5500_gpio_output()
245 		ts5500_clear_mask(line.value_mask, line.value_addr);  in ts5500_gpio_output()
246 	spin_unlock_irqrestore(&priv->lock, flags);  in ts5500_gpio_output()
254 	const struct ts5500_dio line = priv->pinout[offset];  in ts5500_gpio_set()  local
257 	spin_lock_irqsave(&priv->lock, flags);  in ts5500_gpio_set()
259 		ts5500_set_mask(line.value_mask, line.value_addr);  in ts5500_gpio_set()
261 		ts5500_clear_mask(line.value_mask, line.value_addr);  in ts5500_gpio_set()
262 	spin_unlock_irqrestore(&priv->lock, flags);  in ts5500_gpio_set()
268 	const struct ts5500_dio *block = priv->pinout;  in ts5500_gpio_to_irq()
269 	const struct ts5500_dio line = block[offset];  in ts5500_gpio_to_irq()  local
272 	if (line.irq)  in ts5500_gpio_to_irq()
273 		return line.irq;  in ts5500_gpio_to_irq()
275 	/* As this pin is input-only, we may strap it to another in/out pin */  in ts5500_gpio_to_irq()
276 	if (priv->strap)  in ts5500_gpio_to_irq()
277 		return priv->hwirq;  in ts5500_gpio_to_irq()
279 	return -ENXIO;  in ts5500_gpio_to_irq()
287 	spin_lock_irqsave(&priv->lock, flags);  in ts5500_enable_irq()
288 	if (priv->hwirq == 7)  in ts5500_enable_irq()
290 	else if (priv->hwirq == 6)  in ts5500_enable_irq()
292 	else if (priv->hwirq == 1)  in ts5500_enable_irq()
295 		ret = -EINVAL;  in ts5500_enable_irq()
296 	spin_unlock_irqrestore(&priv->lock, flags);  in ts5500_enable_irq()
305 	spin_lock_irqsave(&priv->lock, flags);  in ts5500_disable_irq()
306 	if (priv->hwirq == 7)  in ts5500_disable_irq()
308 	else if (priv->hwirq == 6)  in ts5500_disable_irq()
310 	else if (priv->hwirq == 1)  in ts5500_disable_irq()
313 		dev_err(priv->gpio_chip.parent, "invalid hwirq %d\n",  in ts5500_disable_irq()
314 			priv->hwirq);  in ts5500_disable_irq()
315 	spin_unlock_irqrestore(&priv->lock, flags);  in ts5500_disable_irq()
320 	enum ts5500_blocks block = platform_get_device_id(pdev)->driver_data;  in ts5500_dio_probe()
321 	struct ts5500_dio_platform_data *pdata = dev_get_platdata(&pdev->dev);  in ts5500_dio_probe()
322 	struct device *dev = &pdev->dev;  in ts5500_dio_probe()
323 	const char *name = dev_name(dev);  in ts5500_dio_probe()  local
332 		return -EINVAL;  in ts5500_dio_probe()
337 		return -ENOMEM;  in ts5500_dio_probe()
340 	priv->hwirq = res->start;  in ts5500_dio_probe()
341 	spin_lock_init(&priv->lock);  in ts5500_dio_probe()
343 	priv->gpio_chip.owner = THIS_MODULE;  in ts5500_dio_probe()
344 	priv->gpio_chip.label = name;  in ts5500_dio_probe()
345 	priv->gpio_chip.parent = dev;  in ts5500_dio_probe()
346 	priv->gpio_chip.direction_input = ts5500_gpio_input;  in ts5500_dio_probe()
347 	priv->gpio_chip.direction_output = ts5500_gpio_output;  in ts5500_dio_probe()
348 	priv->gpio_chip.get = ts5500_gpio_get;  in ts5500_dio_probe()
349 	priv->gpio_chip.set = ts5500_gpio_set;  in ts5500_dio_probe()
350 	priv->gpio_chip.to_irq = ts5500_gpio_to_irq;  in ts5500_dio_probe()
351 	priv->gpio_chip.base = -1;  in ts5500_dio_probe()
353 		priv->gpio_chip.base = pdata->base;  in ts5500_dio_probe()
354 		priv->strap = pdata->strap;  in ts5500_dio_probe()
359 		priv->pinout = ts5500_dio1;  in ts5500_dio_probe()
360 		priv->gpio_chip.ngpio = ARRAY_SIZE(ts5500_dio1);  in ts5500_dio_probe()
362 		if (!devm_request_region(dev, 0x7a, 3, name)) {  in ts5500_dio_probe()
363 			dev_err(dev, "failed to request %s ports\n", name);  in ts5500_dio_probe()
364 			return -EBUSY;  in ts5500_dio_probe()
368 		priv->pinout = ts5500_dio2;  in ts5500_dio_probe()
369 		priv->gpio_chip.ngpio = ARRAY_SIZE(ts5500_dio2);  in ts5500_dio_probe()
371 		if (!devm_request_region(dev, 0x7e, 2, name)) {  in ts5500_dio_probe()
372 			dev_err(dev, "failed to request %s ports\n", name);  in ts5500_dio_probe()
373 			return -EBUSY;  in ts5500_dio_probe()
379 		if (!devm_request_region(dev, 0x7d, 1, name)) {  in ts5500_dio_probe()
380 			dev_err(dev, "failed to request %s 7D\n", name);  in ts5500_dio_probe()
381 			return -EBUSY;  in ts5500_dio_probe()
388 		priv->pinout = ts5500_lcd;  in ts5500_dio_probe()
389 		priv->gpio_chip.ngpio = ARRAY_SIZE(ts5500_lcd);  in ts5500_dio_probe()
391 		if (!devm_request_region(dev, 0x72, 2, name)) {  in ts5500_dio_probe()
392 			dev_err(dev, "failed to request %s ports\n", name);  in ts5500_dio_probe()
393 			return -EBUSY;  in ts5500_dio_probe()
397 			if (!devm_request_region(dev, 0x7d, 1, name)) {  in ts5500_dio_probe()
398 				dev_err(dev, "failed to request %s 7D\n", name);  in ts5500_dio_probe()
399 				return -EBUSY;  in ts5500_dio_probe()
406 		spin_lock_irqsave(&priv->lock, flags);  in ts5500_dio_probe()
408 		spin_unlock_irqrestore(&priv->lock, flags);  in ts5500_dio_probe()
412 	ret = devm_gpiochip_add_data(dev, &priv->gpio_chip, priv);  in ts5500_dio_probe()
420 		dev_err(dev, "invalid interrupt %d\n", priv->hwirq);  in ts5500_dio_probe()
437 	{ "ts5500-dio1", TS5500_DIO1 },
438 	{ "ts5500-dio2", TS5500_DIO2 },
439 	{ "ts5500-dio-lcd", TS5500_LCD },
440 	{ "ts5600-dio-lcd", TS5600_LCD },
447 		.name = "ts5500-dio",
457 MODULE_AUTHOR("Savoir-faire Linux Inc. <kernel@savoirfairelinux.com>");
458 MODULE_DESCRIPTION("Technologic Systems TS-5500 Digital I/O driver");