diff options
Diffstat (limited to 'common/cmd_gpio.c')
| -rw-r--r-- | common/cmd_gpio.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/common/cmd_gpio.c b/common/cmd_gpio.c deleted file mode 100644 index 2b78b16866..0000000000 --- a/common/cmd_gpio.c +++ /dev/null @@ -1,220 +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 <errno.h> -#include <dm.h> -#include <asm/gpio.h> - -__weak int 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) - -/* A few flags used by show_gpio() */ -enum { - FLAG_SHOW_ALL = 1 << 0, - FLAG_SHOW_BANK = 1 << 1, - FLAG_SHOW_NEWLINE = 1 << 2, -}; - -static void gpio_get_description(struct udevice *dev, const char *bank_name, - int offset, int *flagsp) -{ - char buf[80]; - int ret; - - ret = gpio_get_function(dev, offset, NULL); - if (ret < 0) - goto err; - if (!(*flagsp & FLAG_SHOW_ALL) && ret == GPIOF_UNUSED) - return; - if ((*flagsp & FLAG_SHOW_BANK) && bank_name) { - if (*flagsp & FLAG_SHOW_NEWLINE) { - putc('\n'); - *flagsp &= ~FLAG_SHOW_NEWLINE; - } - printf("Bank %s:\n", bank_name); - *flagsp &= ~FLAG_SHOW_BANK; - } - - ret = gpio_get_status(dev, offset, buf, sizeof(buf)); - if (ret) - goto err; - - printf("%s\n", buf); - return; -err: - printf("Error %d\n", ret); -} - -static int do_gpio_status(bool all, const char *gpio_name) -{ - struct udevice *dev; - int banklen; - int flags; - int ret; - - flags = 0; - 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; - - flags |= FLAG_SHOW_BANK; - if (all) - flags |= FLAG_SHOW_ALL; - bank_name = gpio_get_bank_info(dev, &num_bits); - if (!num_bits) { - debug("GPIO device %s has no bits\n", dev->name); - continue; - } - banklen = bank_name ? strlen(bank_name) : 0; - - if (!gpio_name || !bank_name || - !strncmp(gpio_name, bank_name, banklen)) { - const char *p = NULL; - int offset; - - p = gpio_name + banklen; - if (gpio_name && *p) { - offset = simple_strtoul(p, NULL, 10); - gpio_get_description(dev, bank_name, offset, - &flags); - } else { - for (offset = 0; offset < num_bits; offset++) { - gpio_get_description(dev, bank_name, - offset, &flags); - } - } - } - /* Add a newline between bank names */ - if (!(flags & FLAG_SHOW_BANK)) - flags |= FLAG_SHOW_NEWLINE; - } - - 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; - int ret; -#ifdef CONFIG_DM_GPIO - bool all = false; -#endif - - if (argc < 2) - show_usage: - return CMD_RET_USAGE; - str_cmd = argv[1]; - argc -= 2; - argv += 2; -#ifdef CONFIG_DM_GPIO - if (argc > 0 && !strcmp(*argv, "-a")) { - all = true; - argc--; - argv++; - } -#endif - if (argc > 0) - str_gpio = *argv; - if (!strncmp(str_cmd, "status", 1)) { - /* Support deprecated gpio_status() */ -#ifdef gpio_status - gpio_status(); - return 0; -#elif defined(CONFIG_DM_GPIO) - return cmd_process_error(cmdtp, do_gpio_status(all, 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) { - printf("GPIO: '%s' not found\n", str_gpio); - 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 */ - ret = gpio_request(gpio, "cmd_gpio"); - if (ret && ret != -EBUSY) { - 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); - - if (ret != -EBUSY) - gpio_free(gpio); - - return value; -} - -U_BOOT_CMD(gpio, 4, 0, do_gpio, - "query and control gpio pins", - "<input|set|clear|toggle> <pin>\n" - " - input/set/clear/toggle the specified pin\n" - "gpio status [-a] [<bank> | <pin>] - show [all/claimed] GPIOs"); |