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committed 209b43759d6/* * Sonics Silicon Backplane * GPIO driver * * Copyright 2011, Broadcom Corporation * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de> * * Licensed under the GNU/GPL. See COPYING for details. *//************************************************** * Shared **************************************************/static int ssb_gpio_to_irq(struct gpio_chip *chip, unsigned int gpio){ struct ssb_bus *bus = gpiochip_get_data(chip); if (bus->bustype == SSB_BUSTYPE_SSB) return irq_find_mapping(bus->irq_domain, gpio); else return -EINVAL;}/************************************************** * ChipCommon **************************************************/static int ssb_gpio_chipco_get_value(struct gpio_chip *chip, unsigned int gpio){ struct ssb_bus *bus = gpiochip_get_data(chip); return !!ssb_chipco_gpio_in(&bus->chipco, 1 << gpio);}static void ssb_gpio_chipco_set_value(struct gpio_chip *chip, unsigned int gpio, int value){ struct ssb_bus *bus = gpiochip_get_data(chip); ssb_chipco_gpio_out(&bus->chipco, 1 << gpio, value ? 1 << gpio : 0);}static int ssb_gpio_chipco_direction_input(struct gpio_chip *chip, unsigned int gpio){ struct ssb_bus *bus = gpiochip_get_data(chip); ssb_chipco_gpio_outen(&bus->chipco, 1 << gpio, 0); return 0;}static int ssb_gpio_chipco_direction_output(struct gpio_chip *chip, unsigned int gpio, int value){ struct ssb_bus *bus = gpiochip_get_data(chip); ssb_chipco_gpio_outen(&bus->chipco, 1 << gpio, 1 << gpio); ssb_chipco_gpio_out(&bus->chipco, 1 << gpio, value ? 1 << gpio : 0); return 0;}static int ssb_gpio_chipco_request(struct gpio_chip *chip, unsigned int gpio){ struct ssb_bus *bus = gpiochip_get_data(chip); ssb_chipco_gpio_control(&bus->chipco, 1 << gpio, 0); /* clear pulldown */ ssb_chipco_gpio_pulldown(&bus->chipco, 1 << gpio, 0); /* Set pullup */ ssb_chipco_gpio_pullup(&bus->chipco, 1 << gpio, 1 << gpio); return 0;}static void ssb_gpio_chipco_free(struct gpio_chip *chip, unsigned int gpio){ struct ssb_bus *bus = gpiochip_get_data(chip); /* clear pullup */