1 files changed, 455 insertions, 0 deletions

diff --git a/cmd/regulator.c b/cmd/regulator.c
new file mode 100644
index 0000000..bfea6e0
--- /dev/null
+++ b/cmd/regulator.c
@@ -0,0 +1,455 @@
+/*
+ * Copyright (C) 2014-2015 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <errno.h>
+#include <dm.h>
+#include <dm/uclass-internal.h>
+#include <power/regulator.h>
+
+#define LIMIT_DEVNAME	20
+#define LIMIT_OFNAME	32
+#define LIMIT_INFO	18
+
+static struct udevice *currdev;
+
+static int failure(int ret)
+{
+	printf("Error: %d (%s)\n", ret, errno_str(ret));
+
+	return CMD_RET_FAILURE;
+}
+
+static int do_dev(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct dm_regulator_uclass_platdata *uc_pdata;
+	const char *name;
+	int ret = -ENXIO;
+
+	switch (argc) {
+	case 2:
+		name = argv[1];
+		ret = regulator_get_by_platname(name, &currdev);
+		if (ret) {
+			printf("Can't get the regulator: %s!\n", name);
+			return failure(ret);
+		}
+	case 1:
+		if (!currdev) {
+			printf("Regulator device is not set!\n\n");
+			return CMD_RET_USAGE;
+		}
+
+		uc_pdata = dev_get_uclass_platdata(currdev);
+		if (!uc_pdata) {
+			printf("%s: no regulator platform data!\n", currdev->name);
+			return failure(ret);
+		}
+
+		printf("dev: %s @ %s\n", uc_pdata->name, currdev->name);
+	}
+
+	return CMD_RET_SUCCESS;
+}
+
+static int curr_dev_and_platdata(struct udevice **devp,
+				 struct dm_regulator_uclass_platdata **uc_pdata,
+				 bool allow_type_fixed)
+{
+	*devp = NULL;
+	*uc_pdata = NULL;
+
+	if (!currdev) {
+		printf("First, set the regulator device!\n");
+		return CMD_RET_FAILURE;
+	}
+
+	*devp = currdev;
+
+	*uc_pdata = dev_get_uclass_platdata(*devp);
+	if (!*uc_pdata) {
+		error("Regulator: %s - missing platform data!", currdev->name);
+		return CMD_RET_FAILURE;
+	}
+
+	if (!allow_type_fixed && (*uc_pdata)->type == REGULATOR_TYPE_FIXED) {
+		printf("Operation not allowed for fixed regulator!\n");
+		return CMD_RET_FAILURE;
+	}
+
+	return CMD_RET_SUCCESS;
+}
+
+static int do_list(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct dm_regulator_uclass_platdata *uc_pdata;
+	struct udevice *dev;
+	int ret;
+
+	printf("| %-*.*s| %-*.*s| %s\n",
+	       LIMIT_DEVNAME, LIMIT_DEVNAME, "Device",
+	       LIMIT_OFNAME, LIMIT_OFNAME, "regulator-name",
+	       "Parent");
+
+	for (ret = uclass_find_first_device(UCLASS_REGULATOR, &dev); dev;
+	     ret = uclass_find_next_device(&dev)) {
+		if (ret)
+			continue;
+
+		uc_pdata = dev_get_uclass_platdata(dev);
+		printf("| %-*.*s| %-*.*s| %s\n",
+		       LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
+		       LIMIT_OFNAME, LIMIT_OFNAME, uc_pdata->name,
+		       dev->parent->name);
+	}
+
+	return ret;
+}
+
+static int constraint(const char *name, int val, const char *val_name)
+{
+	printf("%-*s", LIMIT_INFO, name);
+	if (val < 0) {
+		printf(" %s (err: %d)\n", errno_str(val), val);
+		return val;
+	}
+
+	if (val_name)
+		printf(" %d (%s)\n", val, val_name);
+	else
+		printf(" %d\n", val);
+
+	return 0;
+}
+
+static const char *get_mode_name(struct dm_regulator_mode *mode,
+				 int mode_count,
+				 int mode_id)
+{
+	while (mode_count--) {
+		if (mode->id == mode_id)
+			return mode->name;
+		mode++;
+	}
+
+	return NULL;
+}
+
+static int do_info(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct udevice *dev;
+	struct dm_regulator_uclass_platdata *uc_pdata;
+	struct dm_regulator_mode *modes;
+	const char *parent_uc;
+	int mode_count;
+	int ret;
+	int i;
+
+	ret = curr_dev_and_platdata(&dev, &uc_pdata, true);
+	if (ret)
+		return ret;
+
+	parent_uc = dev_get_uclass_name(dev->parent);
+
+	printf("%s\n%-*s %s\n%-*s %s\n%-*s %s\n%-*s %s\n%-*s\n",
+	       "Regulator info:",
+	       LIMIT_INFO, "* regulator-name:", uc_pdata->name,
+	       LIMIT_INFO, "* device name:", dev->name,
+	       LIMIT_INFO, "* parent name:", dev->parent->name,
+	       LIMIT_INFO, "* parent uclass:", parent_uc,
+	       LIMIT_INFO, "* constraints:");
+
+	constraint("  - min uV:", uc_pdata->min_uV, NULL);
+	constraint("  - max uV:", uc_pdata->max_uV, NULL);
+	constraint("  - min uA:", uc_pdata->min_uA, NULL);
+	constraint("  - max uA:", uc_pdata->max_uA, NULL);
+	constraint("  - always on:", uc_pdata->always_on,
+		   uc_pdata->always_on ? "true" : "false");
+	constraint("  - boot on:", uc_pdata->boot_on,
+		   uc_pdata->boot_on ? "true" : "false");
+
+	mode_count = regulator_mode(dev, &modes);
+	constraint("* op modes:", mode_count, NULL);
+
+	for (i = 0; i < mode_count; i++, modes++)
+		constraint("  - mode id:", modes->id, modes->name);
+
+	return CMD_RET_SUCCESS;
+}
+
+static void do_status_detail(struct udevice *dev,
+			     struct dm_regulator_uclass_platdata *uc_pdata)
+{
+	int current, value, mode;
+	const char *mode_name;
+	bool enabled;
+
+	printf("Regulator %s status:\n", uc_pdata->name);
+
+	enabled = regulator_get_enable(dev);
+	constraint(" * enable:", enabled, enabled ? "true" : "false");
+
+	value = regulator_get_value(dev);
+	constraint(" * value uV:", value, NULL);
+
+	current = regulator_get_current(dev);
+	constraint(" * current uA:", current, NULL);
+
+	mode = regulator_get_mode(dev);
+	mode_name = get_mode_name(uc_pdata->mode, uc_pdata->mode_count, mode);
+	constraint(" * mode id:", mode, mode_name);
+}
+
+static void do_status_line(struct udevice *dev)
+{
+	struct dm_regulator_uclass_platdata *pdata;
+	int current, value, mode;
+	const char *mode_name;
+	bool enabled;
+
+	pdata = dev_get_uclass_platdata(dev);
+	enabled = regulator_get_enable(dev);
+	value = regulator_get_value(dev);
+	current = regulator_get_current(dev);
+	mode = regulator_get_mode(dev);
+	mode_name = get_mode_name(pdata->mode, pdata->mode_count, mode);
+	printf("%-20s %-10s ", pdata->name, enabled ? "enabled" : "disabled");
+	if (value >= 0)
+		printf("%10d ", value);
+	else
+		printf("%10s ", "-");
+	if (current >= 0)
+		printf("%10d ", current);
+	else
+		printf("%10s ", "-");
+	if (mode >= 0)
+		printf("%-10s", mode_name);
+	else
+		printf("%-10s", "-");
+	printf("\n");
+}
+
+static int do_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct dm_regulator_uclass_platdata *uc_pdata;
+	struct udevice *dev;
+	int ret;
+
+	if (currdev && (argc < 2 || strcmp(argv[1], "-a"))) {
+		ret = curr_dev_and_platdata(&dev, &uc_pdata, true);
+		if (ret)
+			return CMD_RET_FAILURE;
+		do_status_detail(dev, uc_pdata);
+		return 0;
+	}
+
+	/* Show all of them in a list, probing them as needed */
+	printf("%-20s %-10s %10s %10s %-10s\n", "Name", "Enabled", "uV", "mA",
+	       "Mode");
+	for (ret = uclass_first_device(UCLASS_REGULATOR, &dev); dev;
+	     ret = uclass_next_device(&dev))
+		do_status_line(dev);
+
+	return CMD_RET_SUCCESS;
+}
+
+static int do_value(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct udevice *dev;
+	struct dm_regulator_uclass_platdata *uc_pdata;
+	int value;
+	int force;
+	int ret;
+
+	ret = curr_dev_and_platdata(&dev, &uc_pdata, argc == 1);
+	if (ret)
+		return ret;
+
+	if (argc == 1) {
+		ret = regulator_get_value(dev);
+		if (ret < 0) {
+			printf("Regulator: %s - can't get the Voltage!\n",
+			       uc_pdata->name);
+			return failure(ret);
+		}
+
+		printf("%d uV\n", ret);
+		return CMD_RET_SUCCESS;
+	}
+
+	if (argc == 3)
+		force = !strcmp("-f", argv[2]);
+	else
+		force = 0;
+
+	value = simple_strtoul(argv[1], NULL, 0);
+	if ((value < uc_pdata->min_uV || value > uc_pdata->max_uV) && !force) {
+		printf("Value exceeds regulator constraint limits %d..%d uV\n",
+		       uc_pdata->min_uV, uc_pdata->max_uV);
+		return CMD_RET_FAILURE;
+	}
+
+	ret = regulator_set_value(dev, value);
+	if (ret) {
+		printf("Regulator: %s - can't set the Voltage!\n",
+		       uc_pdata->name);
+		return failure(ret);
+	}
+
+	return CMD_RET_SUCCESS;
+}
+
+static int do_current(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct udevice *dev;
+	struct dm_regulator_uclass_platdata *uc_pdata;
+	int current;
+	int ret;
+
+	ret = curr_dev_and_platdata(&dev, &uc_pdata, argc == 1);
+	if (ret)
+		return ret;
+
+	if (argc == 1) {
+		ret = regulator_get_current(dev);
+		if (ret < 0) {
+			printf("Regulator: %s - can't get the Current!\n",
+			       uc_pdata->name);
+			return failure(ret);
+		}
+
+		printf("%d uA\n", ret);
+		return CMD_RET_SUCCESS;
+	}
+
+	current = simple_strtoul(argv[1], NULL, 0);
+	if (current < uc_pdata->min_uA || current > uc_pdata->max_uA) {
+		printf("Current exceeds regulator constraint limits\n");
+		return CMD_RET_FAILURE;
+	}
+
+	ret = regulator_set_current(dev, current);
+	if (ret) {
+		printf("Regulator: %s - can't set the Current!\n",
+		       uc_pdata->name);
+		return failure(ret);
+	}
+
+	return CMD_RET_SUCCESS;
+}
+
+static int do_mode(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct udevice *dev;
+	struct dm_regulator_uclass_platdata *uc_pdata;
+	int mode;
+	int ret;
+
+	ret = curr_dev_and_platdata(&dev, &uc_pdata, false);
+	if (ret)
+		return ret;
+
+	if (argc == 1) {
+		ret = regulator_get_mode(dev);
+		if (ret < 0) {
+			printf("Regulator: %s - can't get the operation mode!\n",
+			       uc_pdata->name);
+			return failure(ret);
+		}
+
+		printf("mode id: %d\n", ret);
+		return CMD_RET_SUCCESS;
+	}
+
+	mode = simple_strtoul(argv[1], NULL, 0);
+
+	ret = regulator_set_mode(dev, mode);
+	if (ret) {
+		printf("Regulator: %s - can't set the operation mode!\n",
+		       uc_pdata->name);
+		return failure(ret);
+	}
+
+	return CMD_RET_SUCCESS;
+}
+
+static int do_enable(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct udevice *dev;
+	struct dm_regulator_uclass_platdata *uc_pdata;
+	int ret;
+
+	ret = curr_dev_and_platdata(&dev, &uc_pdata, true);
+	if (ret)
+		return ret;
+
+	ret = regulator_set_enable(dev, true);
+	if (ret) {
+		printf("Regulator: %s - can't enable!\n", uc_pdata->name);
+		return failure(ret);
+	}
+
+	return CMD_RET_SUCCESS;
+}
+
+static int do_disable(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct udevice *dev;
+	struct dm_regulator_uclass_platdata *uc_pdata;
+	int ret;
+
+	ret = curr_dev_and_platdata(&dev, &uc_pdata, true);
+	if (ret)
+		return ret;
+
+	ret = regulator_set_enable(dev, false);
+	if (ret) {
+		printf("Regulator: %s - can't disable!\n", uc_pdata->name);
+		return failure(ret);
+	}
+
+	return CMD_RET_SUCCESS;
+}
+
+static cmd_tbl_t subcmd[] = {
+	U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
+	U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
+	U_BOOT_CMD_MKENT(info, 2, 1, do_info, "", ""),
+	U_BOOT_CMD_MKENT(status, 2, 1, do_status, "", ""),
+	U_BOOT_CMD_MKENT(value, 3, 1, do_value, "", ""),
+	U_BOOT_CMD_MKENT(current, 3, 1, do_current, "", ""),
+	U_BOOT_CMD_MKENT(mode, 2, 1, do_mode, "", ""),
+	U_BOOT_CMD_MKENT(enable, 1, 1, do_enable, "", ""),
+	U_BOOT_CMD_MKENT(disable, 1, 1, do_disable, "", ""),
+};
+
+static int do_regulator(cmd_tbl_t *cmdtp, int flag, int argc,
+			char * const argv[])
+{
+	cmd_tbl_t *cmd;
+
+	argc--;
+	argv++;
+
+	cmd = find_cmd_tbl(argv[0], subcmd, ARRAY_SIZE(subcmd));
+	if (cmd == NULL || argc > cmd->maxargs)
+		return CMD_RET_USAGE;
+
+	return cmd->cmd(cmdtp, flag, argc, argv);
+}
+
+U_BOOT_CMD(regulator, CONFIG_SYS_MAXARGS, 1, do_regulator,
+	"uclass operations",
+	"list             - list UCLASS regulator devices\n"
+	"regulator dev [regulator-name] - show/[set] operating regulator device\n"
+	"regulator info                 - print constraints info\n"
+	"regulator status [-a]          - print operating status [for all]\n"
+	"regulator value [val] [-f]     - print/[set] voltage value [uV] (force)\n"
+	"regulator current [val]        - print/[set] current value [uA]\n"
+	"regulator mode [id]            - print/[set] operating mode id\n"
+	"regulator enable               - enable the regulator output\n"
+	"regulator disable              - disable the regulator output\n"
+);