drivers/gpio/gpio-sch311x.c

39 struct sch311x_gpio_block {		/* one GPIO block runtime data */
44 	spinlock_t lock;		/* lock for this GPIO block */
134 	struct sch311x_gpio_block *block = gpiochip_get_data(chip);
136 	if (block->config_regs[offset] == 0) /* GPIO is not available */
139 	if (!request_region(block->runtime_reg + block->config_regs[offset],
142 			block->runtime_reg + block->config_regs[offset]);
150 	struct sch311x_gpio_block *block = gpiochip_get_data(chip);
152 	if (block->config_regs[offset] == 0) /* GPIO is not available */
155 	release_region(block->runtime_reg + block->config_regs[offset], 1);
160 	struct sch311x_gpio_block *block = gpiochip_get_data(chip);
163 	spin_lock(&block->lock);
164 	data = inb(block->runtime_reg + block->data_reg);
165 	spin_unlock(&block->lock);
170 static void __sch311x_gpio_set(struct sch311x_gpio_block *block,
173 	u8 data = inb(block->runtime_reg + block->data_reg);
178 	outb(data, block->runtime_reg + block->data_reg);
184 	struct sch311x_gpio_block *block = gpiochip_get_data(chip);
186 	spin_lock(&block->lock);
187 	__sch311x_gpio_set(block, offset, value);
188 	spin_unlock(&block->lock);
193 	struct sch311x_gpio_block *block = gpiochip_get_data(chip);
196 	spin_lock(&block->lock);
197 	data = inb(block->runtime_reg + block->config_regs[offset]);
199 	outb(data, block->runtime_reg + block->config_regs[offset]);
200 	spin_unlock(&block->lock);
208 	struct sch311x_gpio_block *block = gpiochip_get_data(chip);
211 	spin_lock(&block->lock);
213 	data = inb(block->runtime_reg + block->config_regs[offset]);
215 	outb(data, block->runtime_reg + block->config_regs[offset]);
216 	__sch311x_gpio_set(block, offset, value);
218 	spin_unlock(&block->lock);
224 	struct sch311x_gpio_block *block = gpiochip_get_data(chip);
227 	spin_lock(&block->lock);
228 	data = inb(block->runtime_reg + block->config_regs[offset]);
229 	spin_unlock(&block->lock);
240 	struct sch311x_gpio_block *block = gpiochip_get_data(chip);
246 		spin_lock(&block->lock);
247 		data = inb(block->runtime_reg + block->config_regs[offset]);
249 		outb(data, block->runtime_reg + block->config_regs[offset]);
250 		spin_unlock(&block->lock);
253 		spin_lock(&block->lock);
254 		data = inb(block->runtime_reg + block->config_regs[offset]);
256 		outb(data, block->runtime_reg + block->config_regs[offset]);
257 		spin_unlock(&block->lock);
269 	struct sch311x_gpio_block *block;
285 		block = &priv->blocks[i];
287 		spin_lock_init(&block->lock);
289 		block->chip.label = DRV_NAME;
290 		block->chip.owner = THIS_MODULE;
291 		block->chip.request = sch311x_gpio_request;
292 		block->chip.free = sch311x_gpio_free;
293 		block->chip.direction_input = sch311x_gpio_direction_in;
294 		block->chip.direction_output = sch311x_gpio_direction_out;
295 		block->chip.get_direction = sch311x_gpio_get_direction;
296 		block->chip.set_config = sch311x_gpio_set_config;
297 		block->chip.get = sch311x_gpio_get;
298 		block->chip.set = sch311x_gpio_set;
299 		block->chip.ngpio = 8;
300 		block->chip.parent = &pdev->dev;
301 		block->chip.base = sch311x_gpio_blocks[i].base;
302 		block->config_regs = sch311x_gpio_blocks[i].config_regs;
303 		block->data_reg = sch311x_gpio_blocks[i].data_reg;
304 		block->runtime_reg = pdata->runtime_reg;
306 		err = devm_gpiochip_add_data(&pdev->dev, &block->chip, block);
313 			 "SMSC SCH311x GPIO block %d registered.\n", i);