[J-u-boot.git] / cmd / pinmux.c

// 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"
)
Commit	Line	Data
d5a83139 PC	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
	4	*/
	5
	6	#include <common.h>
	7	#include <command.h>
	8	#include <dm.h>
	9	#include <errno.h>
	10	#include <dm/pinctrl.h>
	11	#include <dm/uclass-internal.h>
	12
	13	#define LIMIT_DEVNAME 30
	14
	15	static struct udevice *currdev;
	16
09140113 SG	17	static int do_dev(struct cmd_tbl *cmdtp, int flag, int argc,
09140113 SG	18	char *const argv[])
d5a83139 PC	19	{
	20	const char *name;
	21	int ret;
	22
	23	switch (argc) {
	24	case 2:
	25	name = argv[1];
	26	ret = uclass_get_device_by_name(UCLASS_PINCTRL, name, &currdev);
	27	if (ret) {
	28	printf("Can't get the pin-controller: %s!\n", name);
	29	return CMD_RET_FAILURE;
	30	}
d23aef17	31	/* fall through */
d5a83139 PC	32	case 1:
	33	if (!currdev) {
	34	printf("Pin-controller device is not set!\n");
	35	return CMD_RET_USAGE;
	36	}
	37
	38	printf("dev: %s\n", currdev->name);
	39	}
	40
	41	return CMD_RET_SUCCESS;
	42	}
	43
fea03459 PD	44	/**
	45	* Print the muxing information for one or all pins of one pinctrl device
	46	*
	47	* @param dev pinctrl device
	48	* @param name NULL to display all the pins
	49	* or name of the pin to display
185f812c	50	* Return: 0 on success, non-0 on error
fea03459 PD	51	*/
fea03459 PD	52	static int show_pinmux(struct udevice dev, char name)
d5a83139 PC	53	{
	54	char pin_name[PINNAME_SIZE];
	55	char pin_mux[PINMUX_SIZE];
	56	int pins_count;
	57	int i;
	58	int ret;
fea03459	59	bool found = false;
d5a83139 PC	60
	61	pins_count = pinctrl_get_pins_count(dev);
	62
	63	if (pins_count == -ENOSYS) {
4c60fd99	64	printf("Ops get_pins_count not supported by %s\n", dev->name);
d5a83139 PC	65	return pins_count;
	66	}
	67
	68	for (i = 0; i < pins_count; i++) {
	69	ret = pinctrl_get_pin_name(dev, i, pin_name, PINNAME_SIZE);
4c60fd99 PD	70	if (ret) {
4c60fd99 PD	71	printf("Ops get_pin_name error (%d) by %s\n", ret, dev->name);
d5a83139 PC	72	return ret;
d5a83139 PC	73	}
fea03459 PD	74	if (name && strcmp(name, pin_name))
	75	continue;
	76	found = true;
d5a83139 PC	77	ret = pinctrl_get_pin_muxing(dev, i, pin_mux, PINMUX_SIZE);
d5a83139 PC	78	if (ret) {
4c60fd99 PD	79	printf("Ops get_pin_muxing error (%d) by %s in %s\n",
4c60fd99 PD	80	ret, pin_name, dev->name);
d5a83139 PC	81	return ret;
	82	}
	83
	84	printf("%-s: %-s\n", PINNAME_SIZE, pin_name,
	85	PINMUX_SIZE, pin_mux);
	86	}
	87
fea03459 PD	88	if (!found)
	89	return -ENOENT;
	90
d5a83139 PC	91	return 0;
	92	}
	93
09140113 SG	94	static int do_status(struct cmd_tbl *cmdtp, int flag, int argc,
09140113 SG	95	char *const argv[])
d5a83139 PC	96	{
d5a83139 PC	97	struct udevice *dev;
fea03459 PD	98	char *name;
fea03459 PD	99	int ret;
d5a83139	100
4c60fd99 PD	101	if (argc < 2) {
	102	if (!currdev) {
	103	printf("pin-controller device not selected\n");
	104	return CMD_RET_FAILURE;
	105	}
fea03459	106	show_pinmux(currdev, NULL);
4c60fd99 PD	107	return CMD_RET_SUCCESS;
4c60fd99 PD	108	}
d5a83139	109
4c60fd99	110	if (strcmp(argv[1], "-a"))
fea03459 PD	111	name = argv[1];
	112	else
	113	name = NULL;
d5a83139 PC	114
d5a83139 PC	115	uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
fea03459 PD	116	if (!name) {
	117	/* insert a separator between each pin-controller display */
	118	printf("--------------------------\n");
	119	printf("%s:\n", dev->name);
	120	}
	121	ret = show_pinmux(dev, name);
	122	/* stop when the status of requested pin is displayed */
	123	if (name && !ret)
	124	return CMD_RET_SUCCESS;
	125	}
	126
	127	if (name) {
	128	printf("%s not found\n", name);
	129	return CMD_RET_FAILURE;
d5a83139 PC	130	}
d5a83139 PC	131
4c60fd99	132	return CMD_RET_SUCCESS;
d5a83139 PC	133	}
d5a83139 PC	134
09140113 SG	135	static int do_list(struct cmd_tbl *cmdtp, int flag, int argc,
09140113 SG	136	char *const argv[])
d5a83139 PC	137	{
	138	struct udevice *dev;
	139
	140	printf("\| %-.s\| %-.s\| %s\n",
	141	LIMIT_DEVNAME, LIMIT_DEVNAME, "Device",
	142	LIMIT_DEVNAME, LIMIT_DEVNAME, "Driver",
	143	"Parent");
	144
	145	uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
	146	printf("\| %-.s\| %-.s\| %s\n",
	147	LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
	148	LIMIT_DEVNAME, LIMIT_DEVNAME, dev->driver->name,
	149	dev->parent->name);
	150	}
	151
	152	return CMD_RET_SUCCESS;
	153	}
	154
09140113	155	static struct cmd_tbl pinmux_subcmd[] = {
d5a83139 PC	156	U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
	157	U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
	158	U_BOOT_CMD_MKENT(status, 2, 1, do_status, "", ""),
	159	};
	160
09140113 SG	161	static int do_pinmux(struct cmd_tbl *cmdtp, int flag, int argc,
09140113 SG	162	char *const argv[])
d5a83139	163	{
09140113	164	struct cmd_tbl *cmd;
d5a83139 PC	165
	166	argc--;
	167	argv++;
	168
	169	cmd = find_cmd_tbl(argv[0], pinmux_subcmd, ARRAY_SIZE(pinmux_subcmd));
	170	if (!cmd \|\| argc > cmd->maxargs)
	171	return CMD_RET_USAGE;
	172
	173	return cmd->cmd(cmdtp, flag, argc, argv);
	174	}
	175
	176	U_BOOT_CMD(pinmux, CONFIG_SYS_MAXARGS, 1, do_pinmux,
	177	"show pin-controller muxing",
	178	"list - list UCLASS_PINCTRL devices\n"
	179	"pinmux dev [pincontroller-name] - select pin-controller device\n"
fea03459	180	"pinmux status [-a \| pin-name] - print pin-controller muxing [for all \| for pin-name]\n"
d5a83139	181	)