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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
- */
- #include <common.h>
- #include <command.h>
- #include <dm.h>
- #include <errno.h>
- #include <dm/pinctrl.h>
- #include <dm/uclass-internal.h>
- #define LIMIT_DEVNAME 30
- static struct udevice *currdev;
- static int do_dev(struct cmd_tbl *cmdtp, int flag, int argc,
- char *const argv[])
- {
- const char *name;
- int ret;
- switch (argc) {
- case 2:
- name = argv[1];
- ret = uclass_get_device_by_name(UCLASS_PINCTRL, name, &currdev);
- if (ret) {
- printf("Can't get the pin-controller: %s!\n", name);
- return CMD_RET_FAILURE;
- }
- /* fall through */
- case 1:
- if (!currdev) {
- printf("Pin-controller device is not set!\n");
- return CMD_RET_USAGE;
- }
- printf("dev: %s\n", currdev->name);
- }
- return CMD_RET_SUCCESS;
- }
- /**
- * Print the muxing information for one or all pins of one pinctrl device
- *
- * @param dev pinctrl device
- * @param name NULL to display all the pins
- * or name of the pin to display
- * @return 0 on success, non-0 on error
- */
- static int show_pinmux(struct udevice *dev, char *name)
- {
- char pin_name[PINNAME_SIZE];
- char pin_mux[PINMUX_SIZE];
- int pins_count;
- int i;
- int ret;
- bool found = false;
- pins_count = pinctrl_get_pins_count(dev);
- if (pins_count == -ENOSYS) {
- printf("Ops get_pins_count not supported by %s\n", dev->name);
- return pins_count;
- }
- for (i = 0; i < pins_count; i++) {
- ret = pinctrl_get_pin_name(dev, i, pin_name, PINNAME_SIZE);
- if (ret) {
- printf("Ops get_pin_name error (%d) by %s\n", ret, dev->name);
- return ret;
- }
- if (name && strcmp(name, pin_name))
- continue;
- found = true;
- ret = pinctrl_get_pin_muxing(dev, i, pin_mux, PINMUX_SIZE);
- if (ret) {
- printf("Ops get_pin_muxing error (%d) by %s in %s\n",
- ret, pin_name, dev->name);
- return ret;
- }
- printf("%-*s: %-*s\n", PINNAME_SIZE, pin_name,
- PINMUX_SIZE, pin_mux);
- }
- if (!found)
- return -ENOENT;
- return 0;
- }
- static int do_status(struct cmd_tbl *cmdtp, int flag, int argc,
- char *const argv[])
- {
- struct udevice *dev;
- char *name;
- int ret;
- if (argc < 2) {
- if (!currdev) {
- printf("pin-controller device not selected\n");
- return CMD_RET_FAILURE;
- }
- show_pinmux(currdev, NULL);
- return CMD_RET_SUCCESS;
- }
- if (strcmp(argv[1], "-a"))
- name = argv[1];
- else
- name = NULL;
- uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
- if (!name) {
- /* insert a separator between each pin-controller display */
- printf("--------------------------\n");
- printf("%s:\n", dev->name);
- }
- ret = show_pinmux(dev, name);
- /* stop when the status of requested pin is displayed */
- if (name && !ret)
- return CMD_RET_SUCCESS;
- }
- if (name) {
- printf("%s not found\n", name);
- return CMD_RET_FAILURE;
- }
- return CMD_RET_SUCCESS;
- }
- static int do_list(struct cmd_tbl *cmdtp, int flag, int argc,
- char *const argv[])
- {
- struct udevice *dev;
- printf("| %-*.*s| %-*.*s| %s\n",
- LIMIT_DEVNAME, LIMIT_DEVNAME, "Device",
- LIMIT_DEVNAME, LIMIT_DEVNAME, "Driver",
- "Parent");
- uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
- printf("| %-*.*s| %-*.*s| %s\n",
- LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
- LIMIT_DEVNAME, LIMIT_DEVNAME, dev->driver->name,
- dev->parent->name);
- }
- return CMD_RET_SUCCESS;
- }
- static struct cmd_tbl pinmux_subcmd[] = {
- U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
- U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
- U_BOOT_CMD_MKENT(status, 2, 1, do_status, "", ""),
- };
- static int do_pinmux(struct cmd_tbl *cmdtp, int flag, int argc,
- char *const argv[])
- {
- struct cmd_tbl *cmd;
- argc--;
- argv++;
- cmd = find_cmd_tbl(argv[0], pinmux_subcmd, ARRAY_SIZE(pinmux_subcmd));
- if (!cmd || argc > cmd->maxargs)
- return CMD_RET_USAGE;
- return cmd->cmd(cmdtp, flag, argc, argv);
- }
- U_BOOT_CMD(pinmux, CONFIG_SYS_MAXARGS, 1, do_pinmux,
- "show pin-controller muxing",
- "list - list UCLASS_PINCTRL devices\n"
- "pinmux dev [pincontroller-name] - select pin-controller device\n"
- "pinmux status [-a | pin-name] - print pin-controller muxing [for all | for pin-name]\n"
- )
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