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committed 5a1c18b761dx
/* * Broadcom specific AMBA * GPIO driver * * Copyright 2011, Broadcom Corporation * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de> * * Licensed under the GNU/GPL. See COPYING for details. */static int bcma_gpio_get_value(struct gpio_chip *chip, unsigned gpio){ struct bcma_drv_cc *cc = gpiochip_get_data(chip); return !!bcma_chipco_gpio_in(cc, 1 << gpio);}static void bcma_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value){ struct bcma_drv_cc *cc = gpiochip_get_data(chip); bcma_chipco_gpio_out(cc, 1 << gpio, value ? 1 << gpio : 0);}static int bcma_gpio_direction_input(struct gpio_chip *chip, unsigned gpio){ struct bcma_drv_cc *cc = gpiochip_get_data(chip); bcma_chipco_gpio_outen(cc, 1 << gpio, 0); return 0;}static int bcma_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value){ struct bcma_drv_cc *cc = gpiochip_get_data(chip); bcma_chipco_gpio_outen(cc, 1 << gpio, 1 << gpio); bcma_chipco_gpio_out(cc, 1 << gpio, value ? 1 << gpio : 0); return 0;}static int bcma_gpio_request(struct gpio_chip *chip, unsigned gpio){ struct bcma_drv_cc *cc = gpiochip_get_data(chip); bcma_chipco_gpio_control(cc, 1 << gpio, 0); /* clear pulldown */ bcma_chipco_gpio_pulldown(cc, 1 << gpio, 0); /* Set pullup */ bcma_chipco_gpio_pullup(cc, 1 << gpio, 1 << gpio); return 0;}static void bcma_gpio_free(struct gpio_chip *chip, unsigned gpio){ struct bcma_drv_cc *cc = gpiochip_get_data(chip); /* clear pullup */ bcma_chipco_gpio_pullup(cc, 1 << gpio, 0);}static void bcma_gpio_irq_unmask(struct irq_data *d){ struct gpio_chip *gc = irq_data_get_irq_chip_data(d); struct bcma_drv_cc *cc = gpiochip_get_data(gc); int gpio = irqd_to_hwirq(d); u32 val = bcma_chipco_gpio_in(cc, BIT(gpio)); bcma_chipco_gpio_polarity(cc, BIT(gpio), val); bcma_chipco_gpio_intmask(cc, BIT(gpio), BIT(gpio));}static void bcma_gpio_irq_mask(struct irq_data *d){ struct gpio_chip *gc = irq_data_get_irq_chip_data(d); struct bcma_drv_cc *cc = gpiochip_get_data(gc); int gpio = irqd_to_hwirq(d);