1 // SPDX-License-Identifier: GPL-2.0-only
9  *           gpio-it8761e.c by Denis Turischev
10  *           gpio-stmpe.c   by Rabin Vincent
49  * struct it87_gpio - it87-specific GPIO chip
58  *	switches on a subset of lines, whereas the others keep the
83 		return -EBUSY;  in superio_enter()
163 	spin_lock(&it87_gpio->lock);  in it87_gpio_request()
172 	if (group < it87_gpio->simple_size)  in it87_gpio_request()
173 		superio_set_mask(mask, group + it87_gpio->simple_base);  in it87_gpio_request()
175 	/* clear output enable, setting the pin to input, as all the  in it87_gpio_request()
176 	 * newly-exported GPIO interfaces are set to input.  in it87_gpio_request()
178 	superio_clear_mask(mask, group + it87_gpio->output_base);  in it87_gpio_request()
183 	spin_unlock(&it87_gpio->lock);  in it87_gpio_request()
194 	reg = (gpio_num / 8) + it87_gpio->io_base;  in it87_gpio_get()
208 	spin_lock(&it87_gpio->lock);  in it87_gpio_direction_in()
215 	superio_clear_mask(mask, group + it87_gpio->output_base);  in it87_gpio_direction_in()
220 	spin_unlock(&it87_gpio->lock);  in it87_gpio_direction_in()
232 	reg = (gpio_num / 8) + it87_gpio->io_base;  in it87_gpio_set()
251 	spin_lock(&it87_gpio->lock);  in it87_gpio_direction_out()
258 	superio_set_mask(mask, group + it87_gpio->output_base);  in it87_gpio_direction_out()
265 	spin_unlock(&it87_gpio->lock);  in it87_gpio_direction_out()
277 	.base			= -1
297 	it87_gpio->chip = it87_template_chip;  in it87_gpio_init()
302 		it87_gpio->io_size = 8;  /* it8613 only needs 6, use 8 for alignment */  in it87_gpio_init()
303 		it87_gpio->output_base = 0xc8;  in it87_gpio_init()
304 		it87_gpio->simple_base = 0xc0;  in it87_gpio_init()
305 		it87_gpio->simple_size = 6;  in it87_gpio_init()
306 		it87_gpio->chip.ngpio = 64;  /* has 48, use 64 for convenient calc */  in it87_gpio_init()
311 		it87_gpio->io_size = 11;  in it87_gpio_init()
312 		it87_gpio->output_base = 0xc8;  in it87_gpio_init()
313 		it87_gpio->simple_size = 0;  in it87_gpio_init()
314 		it87_gpio->chip.ngpio = 64;  in it87_gpio_init()
322 		it87_gpio->io_size = 8;  in it87_gpio_init()
323 		it87_gpio->output_base = 0xc8;  in it87_gpio_init()
324 		it87_gpio->simple_base = 0xc0;  in it87_gpio_init()
325 		it87_gpio->simple_size = 5;  in it87_gpio_init()
326 		it87_gpio->chip.ngpio = 64;  in it87_gpio_init()
330 		it87_gpio->io_size = 4;  in it87_gpio_init()
331 		it87_gpio->output_base = 0xf0;  in it87_gpio_init()
332 		it87_gpio->simple_size = 0;  in it87_gpio_init()
333 		it87_gpio->chip.ngpio = 16;  in it87_gpio_init()
337 		return -ENODEV;  in it87_gpio_init()
341 		return -ENODEV;  in it87_gpio_init()
351 	it87_gpio->io_base = superio_inw(gpio_ba_reg);  in it87_gpio_init()
356 		chip_type, chip_rev, it87_gpio->chip.ngpio,  in it87_gpio_init()
357 		it87_gpio->io_base);  in it87_gpio_init()
359 	if (!request_region(it87_gpio->io_base, it87_gpio->io_size,  in it87_gpio_init()
361 		return -EBUSY;  in it87_gpio_init()
371 	 * to which GPIO pin we're referring to.  in it87_gpio_init()
373 	labels = kcalloc(it87_gpio->chip.ngpio, sizeof("it87_gpXY"),  in it87_gpio_init()
375 	labels_table = kcalloc(it87_gpio->chip.ngpio, sizeof(const char *),  in it87_gpio_init()
379 		rc = -ENOMEM;  in it87_gpio_init()
383 	for (i = 0; i < it87_gpio->chip.ngpio; i++) {  in it87_gpio_init()
390 	it87_gpio->chip.names = (const char *const*)labels_table;  in it87_gpio_init()
392 	rc = gpiochip_add_data(&it87_gpio->chip, it87_gpio);  in it87_gpio_init()
401 	release_region(it87_gpio->io_base, it87_gpio->io_size);  in it87_gpio_init()
409 	gpiochip_remove(&it87_gpio->chip);  in it87_gpio_exit()
410 	release_region(it87_gpio->io_base, it87_gpio->io_size);  in it87_gpio_exit()
411 	kfree(it87_gpio->chip.names[0]);  in it87_gpio_exit()
412 	kfree(it87_gpio->chip.names);  in it87_gpio_exit()