drivers/gpio/gpio-mpc5200.c

3  * MPC52xx gpio driver
11 #include <linux/gpio/legacy-of-mm-gpiochip.h>
44 static int mpc52xx_wkup_gpio_get(struct gpio_chip *gc, unsigned int gpio)
50 	ret = (in_8(&regs->wkup_ival) >> (7 - gpio)) & 1;
52 	pr_debug("%s: gpio: %d ret: %d\n", __func__, gpio, ret);
58 __mpc52xx_wkup_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
65 		chip->shadow_dvo |= 1 << (7 - gpio);
67 		chip->shadow_dvo &= ~(1 << (7 - gpio));
73 mpc52xx_wkup_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
79 	__mpc52xx_wkup_gpio_set(gc, gpio, val);
83 	pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
86 static int mpc52xx_wkup_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
96 	chip->shadow_ddr &= ~(1 << (7 - gpio));
100 	chip->shadow_gpioe |= 1 << (7 - gpio);
109 mpc52xx_wkup_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
118 	__mpc52xx_wkup_gpio_set(gc, gpio, val);
121 	chip->shadow_ddr |= 1 << (7 - gpio);
125 	chip->shadow_gpioe |= 1 << (7 - gpio);
130 	pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
176 	{ .compatible = "fsl,mpc5200-gpio-wkup", },
182 		.name = "mpc5200-gpio-wkup",
206 static int mpc52xx_simple_gpio_get(struct gpio_chip *gc, unsigned int gpio)
212 	ret = (in_be32(&regs->simple_ival) >> (31 - gpio)) & 1;
218 __mpc52xx_simple_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
225 		chip->shadow_dvo |= 1 << (31 - gpio);
227 		chip->shadow_dvo &= ~(1 << (31 - gpio));
232 mpc52xx_simple_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
238 	__mpc52xx_simple_gpio_set(gc, gpio, val);
242 	pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
245 static int mpc52xx_simple_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
255 	chip->shadow_ddr &= ~(1 << (31 - gpio));
259 	chip->shadow_gpioe |= 1 << (31 - gpio);
268 mpc52xx_simple_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
278 	__mpc52xx_simple_gpio_set(gc, gpio, val);
281 	chip->shadow_ddr |= 1 << (31 - gpio);
285 	chip->shadow_gpioe |= 1 << (31 - gpio);
290 	pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
329 	{ .compatible = "fsl,mpc5200-gpio", },
335 		.name = "mpc5200-gpio",
361 MODULE_DESCRIPTION("Freescale MPC52xx gpio driver");