From: Patrice Chotard Date: Wed, 24 Oct 2018 12:10:17 +0000 (+0200) Subject: cmd: pinmux: Add pinmux command X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=d5a8313905f54ebdf128ac428c3cf58a2ebcbda2;p=u-boot.git 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 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 --- diff --git a/cmd/Kconfig b/cmd/Kconfig index d609f9d1c9..e2973b3c51 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -953,6 +953,14 @@ 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 12a1330b06..0534ddc679 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 0000000000..6c8ec5164d --- /dev/null +++ b/cmd/pinmux.c @@ -0,0 +1,146 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018, STMicroelectronics - All Rights Reserved + */ + +#include +#include +#include +#include +#include +#include + +#define LIMIT_DEVNAME 30 + +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) +{ + char pin_name[PINNAME_SIZE]; + char pin_mux[PINMUX_SIZE]; + 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, PINNAME_SIZE); + if (ret == -ENOSYS) { + printf("Ops get_pin_name not supported\n"); + return ret; + } + + ret = pinctrl_get_pin_muxing(dev, i, pin_mux, PINMUX_SIZE); + if (ret) { + printf("Ops get_pin_muxing error (%d)\n", ret); + return ret; + } + + printf("%-*s: %-*s\n", PINNAME_SIZE, pin_name, + PINMUX_SIZE, pin_mux); + } + + return 0; +} + +static int do_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + struct udevice *dev; + int ret = CMD_RET_USAGE; + + if (currdev && (argc < 2 || strcmp(argv[1], "-a"))) + return show_pinmux(currdev); + + if (argc < 2 || strcmp(argv[1], "-a")) + return ret; + + 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 < 0) + 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" +) diff --git a/include/dm/pinctrl.h b/include/dm/pinctrl.h index 5a7c5f102e..63a7d55b88 100644 --- a/include/dm/pinctrl.h +++ b/include/dm/pinctrl.h @@ -6,6 +6,9 @@ #ifndef __PINCTRL_H #define __PINCTRL_H +#define PINNAME_SIZE 10 +#define PINMUX_SIZE 40 + /** * struct pinconf_param - pin config parameters *