drivers/gpio/gpio-raspberrypi-exp.c

12 #include <linux/gpio/driver.h>
17 #define MODULE_NAME "raspberrypi-exp-gpio"
33 	u32 gpio;
42 	u32 gpio;
50 	u32 gpio;
56 	struct rpi_exp_gpio *gpio;
60 	gpio = gpiochip_get_data(gc);
62 	get.gpio = off + RPI_EXP_GPIO_BASE;	/* GPIO to update */
64 	ret = rpi_firmware_property(gpio->fw, RPI_FIRMWARE_GET_GPIO_CONFIG,
66 	if (ret || get.gpio != 0) {
68 			off, ret, get.gpio);
76 	struct rpi_exp_gpio *gpio;
80 	gpio = gpiochip_get_data(gc);
82 	set_in.gpio = off + RPI_EXP_GPIO_BASE;	/* GPIO to update */
93 	ret = rpi_firmware_property(gpio->fw, RPI_FIRMWARE_SET_GPIO_CONFIG,
95 	if (ret || set_in.gpio != 0) {
97 			off, ret, set_in.gpio);
105 	struct rpi_exp_gpio *gpio;
109 	gpio = gpiochip_get_data(gc);
111 	set_out.gpio = off + RPI_EXP_GPIO_BASE;	/* GPIO to update */
122 	ret = rpi_firmware_property(gpio->fw, RPI_FIRMWARE_SET_GPIO_CONFIG,
124 	if (ret || set_out.gpio != 0) {
126 			off, ret, set_out.gpio);
134 	struct rpi_exp_gpio *gpio;
138 	gpio = gpiochip_get_data(gc);
140 	get.gpio = off + RPI_EXP_GPIO_BASE;	/* GPIO to update */
142 	ret = rpi_firmware_property(gpio->fw, RPI_FIRMWARE_GET_GPIO_CONFIG,
144 	if (ret || get.gpio != 0) {
147 			get.gpio);
158 	struct rpi_exp_gpio *gpio;
162 	gpio = gpiochip_get_data(gc);
164 	get.gpio = off + RPI_EXP_GPIO_BASE;	/* GPIO to update */
167 	ret = rpi_firmware_property(gpio->fw, RPI_FIRMWARE_GET_GPIO_STATE,
169 	if (ret || get.gpio != 0) {
172 			get.gpio);
180 	struct rpi_exp_gpio *gpio;
184 	gpio = gpiochip_get_data(gc);
186 	set.gpio = off + RPI_EXP_GPIO_BASE;	/* GPIO to update */
189 	ret = rpi_firmware_property(gpio->fw, RPI_FIRMWARE_SET_GPIO_STATE,
191 	if (ret || set.gpio != 0)
194 			set.gpio);
238 	{ .compatible = "raspberrypi,firmware-gpio" },
255 MODULE_ALIAS("platform:rpi-exp-gpio");