diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/gpio/mxc_gpio.c')
-rw-r--r-- | qemu/roms/u-boot/drivers/gpio/mxc_gpio.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/qemu/roms/u-boot/drivers/gpio/mxc_gpio.c b/qemu/roms/u-boot/drivers/gpio/mxc_gpio.c deleted file mode 100644 index 6a572d545..000000000 --- a/qemu/roms/u-boot/drivers/gpio/mxc_gpio.c +++ /dev/null @@ -1,136 +0,0 @@ -/* - * Copyright (C) 2009 - * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de> - * - * Copyright (C) 2011 - * Stefano Babic, DENX Software Engineering, <sbabic@denx.de> - * - * SPDX-License-Identifier: GPL-2.0+ - */ -#include <common.h> -#include <asm/arch/imx-regs.h> -#include <asm/gpio.h> -#include <asm/io.h> -#include <errno.h> - -enum mxc_gpio_direction { - MXC_GPIO_DIRECTION_IN, - MXC_GPIO_DIRECTION_OUT, -}; - -#define GPIO_TO_PORT(n) (n / 32) - -/* GPIO port description */ -static unsigned long gpio_ports[] = { - [0] = GPIO1_BASE_ADDR, - [1] = GPIO2_BASE_ADDR, - [2] = GPIO3_BASE_ADDR, -#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \ - defined(CONFIG_MX53) || defined(CONFIG_MX6) - [3] = GPIO4_BASE_ADDR, -#endif -#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6) - [4] = GPIO5_BASE_ADDR, - [5] = GPIO6_BASE_ADDR, -#endif -#if defined(CONFIG_MX53) || defined(CONFIG_MX6) - [6] = GPIO7_BASE_ADDR, -#endif -}; - -static int mxc_gpio_direction(unsigned int gpio, - enum mxc_gpio_direction direction) -{ - unsigned int port = GPIO_TO_PORT(gpio); - struct gpio_regs *regs; - u32 l; - - if (port >= ARRAY_SIZE(gpio_ports)) - return -1; - - gpio &= 0x1f; - - regs = (struct gpio_regs *)gpio_ports[port]; - - l = readl(®s->gpio_dir); - - switch (direction) { - case MXC_GPIO_DIRECTION_OUT: - l |= 1 << gpio; - break; - case MXC_GPIO_DIRECTION_IN: - l &= ~(1 << gpio); - } - writel(l, ®s->gpio_dir); - - return 0; -} - -int gpio_set_value(unsigned gpio, int value) -{ - unsigned int port = GPIO_TO_PORT(gpio); - struct gpio_regs *regs; - u32 l; - - if (port >= ARRAY_SIZE(gpio_ports)) - return -1; - - gpio &= 0x1f; - - regs = (struct gpio_regs *)gpio_ports[port]; - - l = readl(®s->gpio_dr); - if (value) - l |= 1 << gpio; - else - l &= ~(1 << gpio); - writel(l, ®s->gpio_dr); - - return 0; -} - -int gpio_get_value(unsigned gpio) -{ - unsigned int port = GPIO_TO_PORT(gpio); - struct gpio_regs *regs; - u32 val; - - if (port >= ARRAY_SIZE(gpio_ports)) - return -1; - - gpio &= 0x1f; - - regs = (struct gpio_regs *)gpio_ports[port]; - - val = (readl(®s->gpio_psr) >> gpio) & 0x01; - - return val; -} - -int gpio_request(unsigned gpio, const char *label) -{ - unsigned int port = GPIO_TO_PORT(gpio); - if (port >= ARRAY_SIZE(gpio_ports)) - return -1; - return 0; -} - -int gpio_free(unsigned gpio) -{ - return 0; -} - -int gpio_direction_input(unsigned gpio) -{ - return mxc_gpio_direction(gpio, MXC_GPIO_DIRECTION_IN); -} - -int gpio_direction_output(unsigned gpio, int value) -{ - int ret = gpio_set_value(gpio, value); - - if (ret < 0) - return ret; - - return mxc_gpio_direction(gpio, MXC_GPIO_DIRECTION_OUT); -} |