diff options
Diffstat (limited to 'drivers/gpio/gpio-pl061.c')
| -rw-r--r-- | drivers/gpio/gpio-pl061.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c index f34aba9da9..8dd9ca3bd5 100644 --- a/drivers/gpio/gpio-pl061.c +++ b/drivers/gpio/gpio-pl061.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only +// SPDX-FileCopyrightText: 2008,2009 Provigent Ltd. + /* - * Copyright (C) 2008, 2009 Provigent Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Driver for the ARM PrimeCell(tm) General Purpose Input/Output (PL061) * * Data sheet: ARM DDI 0190B, September 2000 @@ -87,7 +84,18 @@ static void pl061_set_value(struct gpio_chip *gc, unsigned offset, int value) writeb(!!value << offset, chip->base + (1 << (offset + 2))); } +static int pl061_get_direction(struct gpio_chip *gc, unsigned offset) +{ + struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc); + + if (readb(chip->base + GPIODIR) & (1 << offset)) + return GPIOF_DIR_OUT; + + return GPIOF_DIR_IN; +} + static struct gpio_ops pl061_gpio_ops = { + .get_direction = pl061_get_direction, .direction_input = pl061_direction_input, .direction_output = pl061_direction_output, .get = pl061_get_value, |