1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (C) 2015-2018 Pengutronix, Uwe Kleine-König <kernel@pengutronix.de>
13 	struct mutex lock;  member
29 	struct gpio_siox_ddata *ddata = dev_get_drvdata(&sdevice->dev);  in gpio_siox_set_data()
31 	mutex_lock(&ddata->lock);  in gpio_siox_set_data()
32 	buf[0] = ddata->setdata[0];  in gpio_siox_set_data()
33 	mutex_unlock(&ddata->lock);  in gpio_siox_set_data()
40 	struct gpio_siox_ddata *ddata = dev_get_drvdata(&sdevice->dev);  in gpio_siox_get_data()
41 	size_t offset;  in gpio_siox_get_data()  local
44 	mutex_lock(&ddata->lock);  in gpio_siox_get_data()
46 	raw_spin_lock_irq(&ddata->irqlock);  in gpio_siox_get_data()
48 	for (offset = 0; offset < 12; ++offset) {  in gpio_siox_get_data()
49 		unsigned int bitpos = 11 - offset;  in gpio_siox_get_data()
52 			ddata->getdata[bitpos / 8] & (1 << (bitpos % 8));  in gpio_siox_get_data()
53 		u32 irq_type = ddata->irq_type[offset];  in gpio_siox_get_data()
58 				ddata->irq_status |= 1 << offset;  in gpio_siox_get_data()
62 				ddata->irq_status |= 1 << offset;  in gpio_siox_get_data()
66 	trigger = ddata->irq_status & ddata->irq_enable;  in gpio_siox_get_data()
68 	raw_spin_unlock_irq(&ddata->irqlock);  in gpio_siox_get_data()
70 	ddata->getdata[0] = buf[0];  in gpio_siox_get_data()
71 	ddata->getdata[1] = buf[1];  in gpio_siox_get_data()
72 	ddata->getdata[2] = buf[2];  in gpio_siox_get_data()
74 	mutex_unlock(&ddata->lock);  in gpio_siox_get_data()
76 	for (offset = 0; offset < 12; ++offset) {  in gpio_siox_get_data()
77 		if (trigger & (1 << offset)) {  in gpio_siox_get_data()
78 			struct irq_domain *irqdomain = ddata->gchip.irq.domain;  in gpio_siox_get_data()
79 			unsigned int irq = irq_find_mapping(irqdomain, offset);  in gpio_siox_get_data()
86 			raw_spin_lock_irq(&ddata->irqlock);  in gpio_siox_get_data()
87 			ddata->irq_status &= ~(1 << offset);  in gpio_siox_get_data()
88 			raw_spin_unlock_irq(&ddata->irqlock);  in gpio_siox_get_data()
102 	raw_spin_lock(&ddata->irqlock);  in gpio_siox_irq_ack()
103 	ddata->irq_status &= ~(1 << d->hwirq);  in gpio_siox_irq_ack()
104 	raw_spin_unlock(&ddata->irqlock);  in gpio_siox_irq_ack()
112 	raw_spin_lock(&ddata->irqlock);  in gpio_siox_irq_mask()
113 	ddata->irq_enable &= ~(1 << d->hwirq);  in gpio_siox_irq_mask()
114 	raw_spin_unlock(&ddata->irqlock);  in gpio_siox_irq_mask()
124 	raw_spin_lock(&ddata->irqlock);  in gpio_siox_irq_unmask()
125 	ddata->irq_enable |= 1 << d->hwirq;  in gpio_siox_irq_unmask()
126 	raw_spin_unlock(&ddata->irqlock);  in gpio_siox_irq_unmask()
134 	raw_spin_lock(&ddata->irqlock);  in gpio_siox_irq_set_type()
135 	ddata->irq_type[d->hwirq] = type;  in gpio_siox_irq_set_type()
136 	raw_spin_unlock(&ddata->irqlock);  in gpio_siox_irq_set_type()
141 static int gpio_siox_get(struct gpio_chip *chip, unsigned int offset)  in gpio_siox_get()  argument
146 	mutex_lock(&ddata->lock);  in gpio_siox_get()
148 	if (offset >= 12) {  in gpio_siox_get()
149 		unsigned int bitpos = 19 - offset;  in gpio_siox_get()
151 		ret = ddata->setdata[0] & (1 << bitpos);  in gpio_siox_get()
153 		unsigned int bitpos = 11 - offset;  in gpio_siox_get()
155 		ret = ddata->getdata[bitpos / 8] & (1 << (bitpos % 8));  in gpio_siox_get()
158 	mutex_unlock(&ddata->lock);  in gpio_siox_get()
164 			  unsigned int offset, int value)  in gpio_siox_set()  argument
167 	u8 mask = 1 << (19 - offset);  in gpio_siox_set()
169 	mutex_lock(&ddata->lock);  in gpio_siox_set()
172 		ddata->setdata[0] |= mask;  in gpio_siox_set()
174 		ddata->setdata[0] &= ~mask;  in gpio_siox_set()
176 	mutex_unlock(&ddata->lock);  in gpio_siox_set()
180 				     unsigned int offset)  in gpio_siox_direction_input()  argument
182 	if (offset >= 12)  in gpio_siox_direction_input()
183 		return -EINVAL;  in gpio_siox_direction_input()
189 				      unsigned int offset, int value)  in gpio_siox_direction_output()  argument
191 	if (offset < 12)  in gpio_siox_direction_output()
192 		return -EINVAL;  in gpio_siox_direction_output()
194 	gpio_siox_set(chip, offset, value);  in gpio_siox_direction_output()
198 static int gpio_siox_get_direction(struct gpio_chip *chip, unsigned int offset)  in gpio_siox_get_direction()  argument
200 	if (offset < 12)  in gpio_siox_get_direction()
207 	.name = "siox-gpio",
220 	struct device *dev = &sdevice->dev;  in gpio_siox_probe()
226 		return -ENOMEM;  in gpio_siox_probe()
230 	mutex_init(&ddata->lock);  in gpio_siox_probe()
231 	raw_spin_lock_init(&ddata->irqlock);  in gpio_siox_probe()
233 	gc = &ddata->gchip;  in gpio_siox_probe()
234 	gc->base = -1;  in gpio_siox_probe()
235 	gc->can_sleep = 1;  in gpio_siox_probe()
236 	gc->parent = dev;  in gpio_siox_probe()
237 	gc->owner = THIS_MODULE;  in gpio_siox_probe()
238 	gc->get = gpio_siox_get;  in gpio_siox_probe()
239 	gc->set = gpio_siox_set;  in gpio_siox_probe()
240 	gc->direction_input = gpio_siox_direction_input;  in gpio_siox_probe()
241 	gc->direction_output = gpio_siox_direction_output;  in gpio_siox_probe()
242 	gc->get_direction = gpio_siox_get_direction;  in gpio_siox_probe()
243 	gc->ngpio = 20;  in gpio_siox_probe()
245 	girq = &gc->irq;  in gpio_siox_probe()
247 	girq->default_type = IRQ_TYPE_NONE;  in gpio_siox_probe()
248 	girq->handler = handle_level_irq;  in gpio_siox_probe()
249 	girq->threaded = true;  in gpio_siox_probe()
263 		.name = "gpio-siox",
268 MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>");