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https://github.com/brain-hackers/u-boot-brain
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cmd: pinmux: Add pinmux command
pinmux command allows to : - list all pin-controllers available on platforms - select a pin-controller - display the muxing of all pins of the current pin-controller or all pin-controllers depending of given options Signed-off-by: Patrice Chotard <patrice.chotard@st.com> cmd: pinmux: Fix pinmux command if "pinmux status" command is used without having set dev using "pinmux dev", print pinmux usage Reviewed-by: Simon Glass <sjg@chromium.org>
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@ -953,6 +953,14 @@ config CMD_PCMCIA
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about 1990. These devices are typically removable memory or network
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about 1990. These devices are typically removable memory or network
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cards using a standard 68-pin connector.
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cards using a standard 68-pin connector.
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config CMD_PINMUX
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bool "pinmux - show pins muxing"
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default y if PINCTRL
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help
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Parse all available pin-controllers and show pins muxing. This
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is useful for debug purpoer to check the pin muxing and to know if
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a pin is configured as a GPIO or as an alternate function.
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config CMD_POWEROFF
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config CMD_POWEROFF
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bool "poweroff"
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bool "poweroff"
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help
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help
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@ -103,6 +103,7 @@ ifdef CONFIG_PCI
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obj-$(CONFIG_CMD_PCI) += pci.o
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obj-$(CONFIG_CMD_PCI) += pci.o
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endif
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endif
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obj-y += pcmcia.o
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obj-y += pcmcia.o
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obj-$(CONFIG_CMD_PINMUX) += pinmux.o
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obj-$(CONFIG_CMD_PXE) += pxe.o
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obj-$(CONFIG_CMD_PXE) += pxe.o
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obj-$(CONFIG_CMD_WOL) += wol.o
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obj-$(CONFIG_CMD_WOL) += wol.o
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obj-$(CONFIG_CMD_QFW) += qfw.o
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obj-$(CONFIG_CMD_QFW) += qfw.o
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146
cmd/pinmux.c
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146
cmd/pinmux.c
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@ -0,0 +1,146 @@
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// 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(cmd_tbl_t *cmdtp, int flag, int argc, 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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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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static int show_pinmux(struct udevice *dev)
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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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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\n");
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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 == -ENOSYS) {
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printf("Ops get_pin_name not supported\n");
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return ret;
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}
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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)\n", ret);
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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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return 0;
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}
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static int do_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct udevice *dev;
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int ret = CMD_RET_USAGE;
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if (currdev && (argc < 2 || strcmp(argv[1], "-a")))
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return show_pinmux(currdev);
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if (argc < 2 || strcmp(argv[1], "-a"))
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return ret;
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uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
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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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ret = show_pinmux(dev);
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if (ret < 0)
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printf("Can't display pin muxing for %s\n",
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dev->name);
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}
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return ret;
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}
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static int do_list(cmd_tbl_t *cmdtp, int flag, int argc, 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 cmd_tbl_t 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(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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cmd_tbl_t *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] - print pin-controller muxing [for all]\n"
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)
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@ -6,6 +6,9 @@
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#ifndef __PINCTRL_H
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#ifndef __PINCTRL_H
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#define __PINCTRL_H
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#define __PINCTRL_H
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#define PINNAME_SIZE 10
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#define PINMUX_SIZE 40
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/**
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/**
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* struct pinconf_param - pin config parameters
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* struct pinconf_param - pin config parameters
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*
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*
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