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 ---
Changes in v2: - In order to make pin muxing display less SoC specific, use pinctrl_pins_count(), pinctrl_get_pin_name() and pinctrl_get_pin_muxing() methods instead of previous pinctrl_pinmux_show() method.
cmd/Kconfig | 8 ++++ cmd/Makefile | 1 + cmd/pinmux.c | 144 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 153 insertions(+) create mode 100644 cmd/pinmux.c
diff --git a/cmd/Kconfig b/cmd/Kconfig index d1f1dc04b4d2..63457599f924 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -947,6 +947,14 @@ config CMD_PCMCIA about 1990. These devices are typically removable memory or network cards using a standard 68-pin connector.
+config CMD_PINMUX + bool "pinmux - show pins muxing" + default y if PINCTRL + help + Parse all available pin-controllers and show pins muxing. This + is useful for debug purpoer to check the pin muxing and to know if + a pin is configured as a GPIO or as an alternate function. + config CMD_POWEROFF bool "poweroff" help diff --git a/cmd/Makefile b/cmd/Makefile index 2c858f9500a9..bee305822254 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -103,6 +103,7 @@ ifdef CONFIG_PCI obj-$(CONFIG_CMD_PCI) += pci.o endif obj-y += pcmcia.o +obj-$(CONFIG_CMD_PINMUX) += pinmux.o obj-$(CONFIG_CMD_PXE) += pxe.o obj-$(CONFIG_CMD_WOL) += wol.o obj-$(CONFIG_CMD_QFW) += qfw.o diff --git a/cmd/pinmux.c b/cmd/pinmux.c new file mode 100644 index 000000000000..ea6886f7cf76 --- /dev/null +++ b/cmd/pinmux.c @@ -0,0 +1,144 @@ +// 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 +#define LIMIT_PINNAME 10 +#define LIMIT_PINMUX 40 + +static struct udevice *currdev; + +static int do_dev(cmd_tbl_t *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; + } + 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; +} + +static int show_pinmux(struct udevice *dev) +{ + const char *pin_name; + const char *pin_mux; + int pins_count; + int i; + int ret; + + pins_count = pinctrl_get_pins_count(dev); + + if (pins_count == -ENOSYS) { + printf("Ops get_pins_count not supported\n"); + return pins_count; + } + + for (i = 0; i < pins_count; i++) { + ret = pinctrl_get_pin_name(dev, i, &pin_name); + if (ret == -ENOSYS) { + printf("Ops get_pin_name not supported\n"); + return ret; + } + + ret = pinctrl_get_pin_muxing(dev, i, &pin_mux); + if (ret == -ENOSYS) { + printf("Ops get_pin_muxing not supported\n"); + return ret; + } + + printf("%-*s: %-*s\n", LIMIT_PINNAME, pin_name, + LIMIT_PINMUX, pin_mux); + } + + return 0; +} + +static int do_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + struct udevice *dev; + int ret = 0; + + if (currdev && (argc < 2 || strcmp(argv[1], "-a"))) + return show_pinmux(currdev); + + uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) { + /* insert a separator between each pin-controller display */ + printf("--------------------------\n"); + printf("%s:\n", dev->name); + ret = show_pinmux(dev); + if (ret) + printf("Can't display pin muxing for %s\n", dev->name); + } + + return ret; +} + +static int do_list(cmd_tbl_t *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 cmd_tbl_t 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(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + cmd_tbl_t *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] - print pin-controller muxing [for all]\n" +)