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.chot...@st.com>
---
Changes in v3:
- Update calls to pinctrl_get_pin_name() and pinctrl_get_pin_muxing
due to prototype update.
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 7ed3c9c3b30b..f041e57a7ff3 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 d9cdaf6064b8..4e562ae32c5b 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -104,6 +104,7 @@ 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..55d5230a1657
--- /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)
+{
+ char pin_name[LIMIT_PINNAME];
+ char pin_mux[LIMIT_PINMUX];
+ 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, LIMIT_PINNAME);
+ if (ret == -ENOSYS) {
+ printf("Ops get_pin_name not supported\n");
+ return ret;
+ }
+
+ ret = pinctrl_get_pin_muxing(dev, i, pin_mux, LIMIT_PINMUX);
+ 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"
+)
--
1.9.1
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