diff options
Diffstat (limited to 'qemu/roms/u-boot/common/cmd_gpio.c')
| -rw-r--r-- | qemu/roms/u-boot/common/cmd_gpio.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/qemu/roms/u-boot/common/cmd_gpio.c b/qemu/roms/u-boot/common/cmd_gpio.c deleted file mode 100644 index aff044518..000000000 --- a/qemu/roms/u-boot/common/cmd_gpio.c +++ /dev/null @@ -1,193 +0,0 @@ -/* - * Control GPIO pins on the fly - * - * Copyright (c) 2008-2011 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#include <common.h> -#include <command.h> -#include <dm.h> -#include <asm/gpio.h> - -int __weak name_to_gpio(const char *name) -{ - return simple_strtoul(name, NULL, 10); -} - -enum gpio_cmd { - GPIO_INPUT, - GPIO_SET, - GPIO_CLEAR, - GPIO_TOGGLE, -}; - -#if defined(CONFIG_DM_GPIO) && !defined(gpio_status) -static const char * const gpio_function[] = { - "input", - "output", - "unknown", -}; - -static void show_gpio(struct device *dev, const char *bank_name, int offset) -{ - struct dm_gpio_ops *ops = gpio_get_ops(dev); - char buf[80]; - int ret; - - *buf = '\0'; - if (ops->get_state) { - ret = ops->get_state(dev, offset, buf, sizeof(buf)); - if (ret) { - puts("<unknown>"); - return; - } - } else { - int func = GPIOF_UNKNOWN; - int ret; - - if (ops->get_function) { - ret = ops->get_function(dev, offset); - if (ret >= 0 && ret < ARRAY_SIZE(gpio_function)) - func = ret; - } - sprintf(buf, "%s%u: %8s %d", bank_name, offset, - gpio_function[func], ops->get_value(dev, offset)); - } - - puts(buf); - puts("\n"); -} - -static int do_gpio_status(const char *gpio_name) -{ - struct device *dev; - int newline = 0; - int ret; - - if (gpio_name && !*gpio_name) - gpio_name = NULL; - for (ret = uclass_first_device(UCLASS_GPIO, &dev); - dev; - ret = uclass_next_device(&dev)) { - const char *bank_name; - int num_bits; - - bank_name = gpio_get_bank_info(dev, &num_bits); - - if (!gpio_name || !bank_name || - !strncmp(gpio_name, bank_name, strlen(bank_name))) { - const char *p = NULL; - int offset; - - if (bank_name) { - if (newline) - putc('\n'); - printf("Bank %s:\n", bank_name); - } - newline = 1; - if (gpio_name && bank_name) { - p = gpio_name + strlen(bank_name); - offset = simple_strtoul(p, NULL, 10); - show_gpio(dev, bank_name, offset); - } else { - for (offset = 0; offset < num_bits; offset++) - show_gpio(dev, bank_name, offset); - } - } - } - - return ret; -} -#endif - -static int do_gpio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - unsigned int gpio; - enum gpio_cmd sub_cmd; - ulong value; - const char *str_cmd, *str_gpio = NULL; -#ifdef CONFIG_DM_GPIO - int ret; -#endif - - if (argc < 2) - show_usage: - return CMD_RET_USAGE; - str_cmd = argv[1]; - if (argc > 2) - str_gpio = argv[2]; - if (!strcmp(str_cmd, "status")) { - /* Support deprecated gpio_status() */ -#ifdef gpio_status - gpio_status(); - return 0; -#elif defined(CONFIG_DM_GPIO) - return cmd_process_error(cmdtp, do_gpio_status(str_gpio)); -#else - goto show_usage; -#endif - } - - if (!str_gpio) - goto show_usage; - - /* parse the behavior */ - switch (*str_cmd) { - case 'i': sub_cmd = GPIO_INPUT; break; - case 's': sub_cmd = GPIO_SET; break; - case 'c': sub_cmd = GPIO_CLEAR; break; - case 't': sub_cmd = GPIO_TOGGLE; break; - default: goto show_usage; - } - -#if defined(CONFIG_DM_GPIO) - /* - * TODO(sjg@chromium.org): For now we must fit into the existing GPIO - * framework, so we look up the name here and convert it to a GPIO number. - * Once all GPIO drivers are converted to driver model, we can change the - * code here to use the GPIO uclass interface instead of the numbered - * GPIO compatibility layer. - */ - ret = gpio_lookup_name(str_gpio, NULL, NULL, &gpio); - if (ret) - return cmd_process_error(cmdtp, ret); -#else - /* turn the gpio name into a gpio number */ - gpio = name_to_gpio(str_gpio); - if (gpio < 0) - goto show_usage; -#endif - /* grab the pin before we tweak it */ - if (gpio_request(gpio, "cmd_gpio")) { - printf("gpio: requesting pin %u failed\n", gpio); - return -1; - } - - /* finally, let's do it: set direction and exec command */ - if (sub_cmd == GPIO_INPUT) { - gpio_direction_input(gpio); - value = gpio_get_value(gpio); - } else { - switch (sub_cmd) { - case GPIO_SET: value = 1; break; - case GPIO_CLEAR: value = 0; break; - case GPIO_TOGGLE: value = !gpio_get_value(gpio); break; - default: goto show_usage; - } - gpio_direction_output(gpio, value); - } - printf("gpio: pin %s (gpio %i) value is %lu\n", - str_gpio, gpio, value); - - gpio_free(gpio); - - return value; -} - -U_BOOT_CMD(gpio, 3, 0, do_gpio, - "query and control gpio pins", - "<input|set|clear|toggle> <pin>\n" - " - input/set/clear/toggle the specified pin\n" - "gpio status [<bank> | <pin>]"); |