arm/xilinx/zy7_gpio.c

35  * available as a GPIO pin.  Pins 64-127 are sent to the PL (FPGA) section of
125 /* Get a specific pin's capabilities. */
127 zy7_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps)
130 	if (!VALID_PIN(pin))
138 /* Get a specific pin's name. */
140 zy7_gpio_pin_getname(device_t dev, uint32_t pin, char *name)
143 	if (!VALID_PIN(pin))
146 	if (pin < NUM_MIO_PINS) {
147 		snprintf(name, GPIOMAXNAME, "MIO_%d", pin);
150 		snprintf(name, GPIOMAXNAME, "EMIO_%d", pin - EMIO_PIN);
157 /* Get a specific pin's current in/out/tri state. */
159 zy7_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t *flags)
163 	if (!VALID_PIN(pin))
168 	if ((RD4(sc, ZY7_GPIO_DIRM(pin >> 5)) & (1 << (pin & 31))) != 0) {
170 		if ((RD4(sc, ZY7_GPIO_OEN(pin >> 5)) & (1 << (pin & 31))) == 0)
183 /* Set a specific pin's in/out/tri state. */
185 zy7_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags)
189 	if (!VALID_PIN(pin))
196 		WR4(sc, ZY7_GPIO_DIRM(pin >> 5),
197 		    RD4(sc, ZY7_GPIO_DIRM(pin >> 5)) | (1 << (pin & 31)));
200 			WR4(sc, ZY7_GPIO_OEN(pin >> 5),
201 			    RD4(sc, ZY7_GPIO_OEN(pin >> 5)) &
202 			    ~(1 << (pin & 31)));
204 			WR4(sc, ZY7_GPIO_OEN(pin >> 5),
205 			    RD4(sc, ZY7_GPIO_OEN(pin >> 5)) |
206 			    (1 << (pin & 31)));
209 		WR4(sc, ZY7_GPIO_DIRM(pin >> 5),
210 		    RD4(sc, ZY7_GPIO_DIRM(pin >> 5)) & ~(1 << (pin & 31)));
211 		WR4(sc, ZY7_GPIO_OEN(pin >> 5),
212 		    RD4(sc, ZY7_GPIO_OEN(pin >> 5)) & ~(1 << (pin & 31)));
220 /* Set a specific output pin's value. */
222 zy7_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value)
226 	if (!VALID_PIN(pin) || value > 1)
230 	if ((pin & 16) != 0)
231 		WR4(sc, ZY7_GPIO_MASK_DATA_MSW(pin >> 5),
232 		    (0xffff0000 ^ (0x10000 << (pin & 15))) |
233 		    (value << (pin & 15)));
235 		WR4(sc, ZY7_GPIO_MASK_DATA_LSW(pin >> 5),
236 		    (0xffff0000 ^ (0x10000 << (pin & 15))) |
237 		    (value << (pin & 15)));
242 /* Get a specific pin's input value. */
244 zy7_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *value)
248 	if (!VALID_PIN(pin))
251 	*value = (RD4(sc, ZY7_GPIO_DATA_RO(pin >> 5)) >> (pin & 31)) & 1;
256 /* Toggle a pin's output value. */
258 zy7_gpio_pin_toggle(device_t dev, uint32_t pin)
262 	if (!VALID_PIN(pin))
267 	WR4(sc, ZY7_GPIO_DATA(pin >> 5),
268 	    RD4(sc, ZY7_GPIO_DATA(pin >> 5)) ^ (1 << (pin & 31)));