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https://github.com/AsahiLinux/u-boot
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fea0345992
Allow pin name parameter for pimux staus command, as gpio command to get status of one pin. The possible usage of the command is: > pinmux dev pinctrl > pinmux status > pinmux status -a > pinmux status <pin-name> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
181 lines
4.1 KiB
C
181 lines
4.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <errno.h>
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#include <dm/pinctrl.h>
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#include <dm/uclass-internal.h>
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#define LIMIT_DEVNAME 30
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static struct udevice *currdev;
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static int do_dev(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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const char *name;
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int ret;
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switch (argc) {
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case 2:
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name = argv[1];
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ret = uclass_get_device_by_name(UCLASS_PINCTRL, name, &currdev);
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if (ret) {
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printf("Can't get the pin-controller: %s!\n", name);
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return CMD_RET_FAILURE;
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}
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/* fall through */
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case 1:
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if (!currdev) {
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printf("Pin-controller device is not set!\n");
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return CMD_RET_USAGE;
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}
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printf("dev: %s\n", currdev->name);
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}
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return CMD_RET_SUCCESS;
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}
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/**
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* Print the muxing information for one or all pins of one pinctrl device
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*
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* @param dev pinctrl device
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* @param name NULL to display all the pins
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* or name of the pin to display
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* @return 0 on success, non-0 on error
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*/
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static int show_pinmux(struct udevice *dev, char *name)
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{
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char pin_name[PINNAME_SIZE];
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char pin_mux[PINMUX_SIZE];
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int pins_count;
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int i;
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int ret;
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bool found = false;
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pins_count = pinctrl_get_pins_count(dev);
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if (pins_count == -ENOSYS) {
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printf("Ops get_pins_count not supported by %s\n", dev->name);
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return pins_count;
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}
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for (i = 0; i < pins_count; i++) {
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ret = pinctrl_get_pin_name(dev, i, pin_name, PINNAME_SIZE);
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if (ret) {
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printf("Ops get_pin_name error (%d) by %s\n", ret, dev->name);
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return ret;
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}
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if (name && strcmp(name, pin_name))
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continue;
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found = true;
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ret = pinctrl_get_pin_muxing(dev, i, pin_mux, PINMUX_SIZE);
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if (ret) {
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printf("Ops get_pin_muxing error (%d) by %s in %s\n",
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ret, pin_name, dev->name);
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return ret;
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}
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printf("%-*s: %-*s\n", PINNAME_SIZE, pin_name,
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PINMUX_SIZE, pin_mux);
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}
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if (!found)
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return -ENOENT;
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return 0;
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}
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static int do_status(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct udevice *dev;
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char *name;
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int ret;
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if (argc < 2) {
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if (!currdev) {
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printf("pin-controller device not selected\n");
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return CMD_RET_FAILURE;
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}
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show_pinmux(currdev, NULL);
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return CMD_RET_SUCCESS;
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}
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if (strcmp(argv[1], "-a"))
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name = argv[1];
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else
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name = NULL;
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uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
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if (!name) {
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/* insert a separator between each pin-controller display */
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printf("--------------------------\n");
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printf("%s:\n", dev->name);
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}
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ret = show_pinmux(dev, name);
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/* stop when the status of requested pin is displayed */
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if (name && !ret)
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return CMD_RET_SUCCESS;
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}
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if (name) {
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printf("%s not found\n", name);
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return CMD_RET_FAILURE;
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}
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return CMD_RET_SUCCESS;
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}
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static int do_list(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct udevice *dev;
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printf("| %-*.*s| %-*.*s| %s\n",
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LIMIT_DEVNAME, LIMIT_DEVNAME, "Device",
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LIMIT_DEVNAME, LIMIT_DEVNAME, "Driver",
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"Parent");
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uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
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printf("| %-*.*s| %-*.*s| %s\n",
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LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
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LIMIT_DEVNAME, LIMIT_DEVNAME, dev->driver->name,
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dev->parent->name);
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}
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return CMD_RET_SUCCESS;
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}
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static struct cmd_tbl pinmux_subcmd[] = {
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U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
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U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
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U_BOOT_CMD_MKENT(status, 2, 1, do_status, "", ""),
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};
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static int do_pinmux(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct cmd_tbl *cmd;
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argc--;
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argv++;
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cmd = find_cmd_tbl(argv[0], pinmux_subcmd, ARRAY_SIZE(pinmux_subcmd));
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if (!cmd || argc > cmd->maxargs)
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return CMD_RET_USAGE;
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return cmd->cmd(cmdtp, flag, argc, argv);
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}
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U_BOOT_CMD(pinmux, CONFIG_SYS_MAXARGS, 1, do_pinmux,
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"show pin-controller muxing",
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"list - list UCLASS_PINCTRL devices\n"
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"pinmux dev [pincontroller-name] - select pin-controller device\n"
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"pinmux status [-a | pin-name] - print pin-controller muxing [for all | for pin-name]\n"
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)
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