From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/sh/boards/mach-sdk7786/gpio.c | 46 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 arch/sh/boards/mach-sdk7786/gpio.c (limited to 'arch/sh/boards/mach-sdk7786/gpio.c') diff --git a/arch/sh/boards/mach-sdk7786/gpio.c b/arch/sh/boards/mach-sdk7786/gpio.c new file mode 100644 index 000000000..c4587d101 --- /dev/null +++ b/arch/sh/boards/mach-sdk7786/gpio.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * SDK7786 FPGA USRGPIR Support. + * + * Copyright (C) 2010 Paul Mundt + */ +#include +#include +#include +#include +#include +#include +#include +#include + +#define NR_FPGA_GPIOS 8 + +static const char *usrgpir_gpio_names[NR_FPGA_GPIOS] = { + "in0", "in1", "in2", "in3", "in4", "in5", "in6", "in7", +}; + +static int usrgpir_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) +{ + /* always in */ + return 0; +} + +static int usrgpir_gpio_get(struct gpio_chip *chip, unsigned gpio) +{ + return !!(fpga_read_reg(USRGPIR) & (1 << gpio)); +} + +static struct gpio_chip usrgpir_gpio_chip = { + .label = "sdk7786-fpga", + .names = usrgpir_gpio_names, + .direction_input = usrgpir_gpio_direction_input, + .get = usrgpir_gpio_get, + .base = -1, /* don't care */ + .ngpio = NR_FPGA_GPIOS, +}; + +static int __init usrgpir_gpio_setup(void) +{ + return gpiochip_add_data(&usrgpir_gpio_chip, NULL); +} +device_initcall(usrgpir_gpio_setup); -- cgit v1.2.3