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dm: regulator: add regulator command
This command is based on driver model regulator's API. The user interface provides: - list UCLASS regulator devices - show or [set] operating regulator device - print constraints info - print operating status - print/[set] voltage value [uV] (force) - print/[set] current value [uA] - print/[set] operating mode id - enable the regulator output - disable the regulator output The 'force' option can be used for setting the value which exceeds the constraints min/max limits. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Przemyslaw Marczak
Simon Glass
parent
d89fdcf9cf
commit
6262b72b8b
3 changed files with 426 additions and 0 deletions
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@ -473,5 +473,27 @@ config CMD_PMIC
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- pmic read address - read byte of register at address
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- pmic write address - write byte to register at address
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The only one change for this command is 'dev' subcommand.
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config CMD_REGULATOR
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bool "Enable Driver Model REGULATOR command"
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depends on DM_REGULATOR
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help
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This command is based on driver model regulator's API.
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User interface features:
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- list - list regulator devices
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- regulator dev <id> - show or [set] operating regulator device
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- regulator info - print constraints info
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- regulator status - print operating status
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- regulator value <val] <-f> - print/[set] voltage value [uV]
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- regulator current <val> - print/[set] current value [uA]
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- regulator mode <id> - print/[set] operating mode id
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- regulator enable - enable the regulator output
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- regulator disable - disable the regulator output
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The '-f' (force) option can be used for set the value which exceeds
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the limits, which are found in device-tree and are kept in regulator's
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uclass platdata structure.
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endmenu
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endmenu
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@ -214,6 +214,7 @@ obj-$(CONFIG_CMD_GPT) += cmd_gpt.o
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# Power
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obj-$(CONFIG_CMD_PMIC) += cmd_pmic.o
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obj-$(CONFIG_CMD_REGULATOR) += cmd_regulator.o
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endif
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ifdef CONFIG_SPL_BUILD
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403
common/cmd_regulator.c
Normal file
403
common/cmd_regulator.c
Normal file
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@ -0,0 +1,403 @@
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/*
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* Copyright (C) 2014-2015 Samsung Electronics
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* Przemyslaw Marczak <p.marczak@samsung.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <errno.h>
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#include <dm.h>
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#include <dm/uclass-internal.h>
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#include <power/regulator.h>
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#define LIMIT_SEQ 3
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#define LIMIT_DEVNAME 20
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#define LIMIT_OFNAME 20
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#define LIMIT_INFO 16
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static struct udevice *currdev;
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static int failed(const char *getset, const char *thing,
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const char *for_dev, int ret)
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{
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printf("Can't %s %s %s.\nError: %d (%s)\n", getset, thing, for_dev,
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ret, errno_str(ret));
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return CMD_RET_FAILURE;
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}
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static int regulator_get(bool list_only, int get_seq, struct udevice **devp)
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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struct udevice *dev;
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int ret;
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if (devp)
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*devp = NULL;
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for (ret = uclass_first_device(UCLASS_REGULATOR, &dev); dev;
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ret = uclass_next_device(&dev)) {
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if (list_only) {
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uc_pdata = dev_get_uclass_platdata(dev);
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printf("|%*d | %*.*s @ %-*.*s| %s @ %s\n",
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LIMIT_SEQ, dev->seq,
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LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
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LIMIT_OFNAME, LIMIT_OFNAME, uc_pdata->name,
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dev->parent->name,
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dev_get_uclass_name(dev->parent));
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continue;
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}
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if (dev->seq == get_seq) {
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if (devp)
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*devp = dev;
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else
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return -EINVAL;
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return 0;
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}
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}
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if (list_only)
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return ret;
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return -ENODEV;
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}
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static int do_dev(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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int seq, ret = -ENXIO;
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switch (argc) {
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case 2:
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seq = simple_strtoul(argv[1], NULL, 0);
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ret = uclass_get_device_by_seq(UCLASS_REGULATOR, seq, &currdev);
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if (ret && (ret = regulator_get(false, seq, &currdev)))
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goto failed;
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case 1:
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uc_pdata = dev_get_uclass_platdata(currdev);
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if (!uc_pdata)
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goto failed;
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printf("dev: %d @ %s\n", currdev->seq, uc_pdata->name);
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}
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return CMD_RET_SUCCESS;
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failed:
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return failed("get", "the", "device", ret);
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}
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static int get_curr_dev_and_pl(struct udevice **devp,
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struct dm_regulator_uclass_platdata **uc_pdata,
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bool allow_type_fixed)
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{
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*devp = NULL;
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*uc_pdata = NULL;
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if (!currdev)
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return failed("get", "current", "device", -ENODEV);
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*devp = currdev;
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*uc_pdata = dev_get_uclass_platdata(*devp);
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if (!*uc_pdata)
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return failed("get", "regulator", "platdata", -ENXIO);
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if (!allow_type_fixed && (*uc_pdata)->type == REGULATOR_TYPE_FIXED) {
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printf("Operation not allowed for fixed regulator!\n");
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return CMD_RET_FAILURE;
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}
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return CMD_RET_SUCCESS;
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}
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static int do_list(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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int ret;
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printf("|%*s | %*.*s @ %-*.*s| %s @ %s\n",
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LIMIT_SEQ, "Seq",
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LIMIT_DEVNAME, LIMIT_DEVNAME, "Name",
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LIMIT_OFNAME, LIMIT_OFNAME, "fdtname",
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"Parent", "uclass");
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ret = regulator_get(true, 0, NULL);
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if (ret)
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return CMD_RET_FAILURE;
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return CMD_RET_SUCCESS;
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}
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static int constraint(const char *name, int val, const char *val_name)
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{
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printf("%-*s", LIMIT_INFO, name);
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if (val < 0) {
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printf(" %s (err: %d)\n", errno_str(val), val);
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return val;
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}
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if (val_name)
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printf(" %d (%s)\n", val, val_name);
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else
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printf(" %d\n", val);
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return 0;
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}
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static const char *get_mode_name(struct dm_regulator_mode *mode,
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int mode_count,
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int mode_id)
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{
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while (mode_count--) {
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if (mode->id == mode_id)
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return mode->name;
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mode++;
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}
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return NULL;
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}
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static int do_info(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct udevice *dev;
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struct dm_regulator_uclass_platdata *uc_pdata;
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struct dm_regulator_mode *modes;
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const char *parent_uc;
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int mode_count;
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int ret;
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int i;
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ret = get_curr_dev_and_pl(&dev, &uc_pdata, true);
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if (ret)
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return ret;
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parent_uc = dev_get_uclass_name(dev->parent);
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printf("Uclass regulator dev %d info:\n", dev->seq);
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printf("%-*s %s @ %s\n%-*s %s\n%-*s %s\n%-*s\n",
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LIMIT_INFO, "* parent:", dev->parent->name, parent_uc,
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LIMIT_INFO, "* dev name:", dev->name,
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LIMIT_INFO, "* fdt name:", uc_pdata->name,
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LIMIT_INFO, "* constraints:");
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constraint(" - min uV:", uc_pdata->min_uV, NULL);
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constraint(" - max uV:", uc_pdata->max_uV, NULL);
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constraint(" - min uA:", uc_pdata->min_uA, NULL);
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constraint(" - max uA:", uc_pdata->max_uA, NULL);
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constraint(" - always on:", uc_pdata->always_on,
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uc_pdata->always_on ? "true" : "false");
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constraint(" - boot on:", uc_pdata->boot_on,
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uc_pdata->boot_on ? "true" : "false");
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mode_count = regulator_mode(dev, &modes);
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constraint("* op modes:", mode_count, NULL);
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for (i = 0; i < mode_count; i++, modes++)
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constraint(" - mode id:", modes->id, modes->name);
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return CMD_RET_SUCCESS;
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}
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static int do_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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int current, value, mode, ret;
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const char *mode_name = NULL;
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struct udevice *dev;
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bool enabled;
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ret = get_curr_dev_and_pl(&dev, &uc_pdata, true);
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if (ret)
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return ret;
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enabled = regulator_get_enable(dev);
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constraint(" * enable:", enabled, enabled ? "true" : "false");
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value = regulator_get_value(dev);
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constraint(" * value uV:", value, NULL);
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current = regulator_get_current(dev);
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constraint(" * current uA:", current, NULL);
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mode = regulator_get_mode(dev);
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mode_name = get_mode_name(uc_pdata->mode, uc_pdata->mode_count, mode);
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constraint(" * mode id:", mode, mode_name);
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return CMD_RET_SUCCESS;
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}
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static int do_value(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct udevice *dev;
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struct dm_regulator_uclass_platdata *uc_pdata;
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int value;
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int force;
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int ret;
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ret = get_curr_dev_and_pl(&dev, &uc_pdata, argc == 1);
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if (ret)
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return ret;
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if (argc == 1) {
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value = regulator_get_value(dev);
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if (value < 0)
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return failed("get", uc_pdata->name, "voltage", value);
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printf("%d uV\n", value);
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return CMD_RET_SUCCESS;
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}
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if (argc == 3)
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force = !strcmp("-f", argv[2]);
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else
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force = 0;
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value = simple_strtoul(argv[1], NULL, 0);
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if ((value < uc_pdata->min_uV || value > uc_pdata->max_uV) && !force) {
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printf("Value exceeds regulator constraint limits\n");
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return CMD_RET_FAILURE;
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}
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ret = regulator_set_value(dev, value);
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if (ret)
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return failed("set", uc_pdata->name, "voltage value", ret);
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return CMD_RET_SUCCESS;
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}
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static int do_current(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct udevice *dev;
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struct dm_regulator_uclass_platdata *uc_pdata;
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int current;
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int ret;
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ret = get_curr_dev_and_pl(&dev, &uc_pdata, argc == 1);
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if (ret)
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return ret;
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if (argc == 1) {
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current = regulator_get_current(dev);
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if (current < 0)
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return failed("get", uc_pdata->name, "current", current);
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printf("%d uA\n", current);
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return CMD_RET_SUCCESS;
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}
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current = simple_strtoul(argv[1], NULL, 0);
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if (current < uc_pdata->min_uA || current > uc_pdata->max_uA) {
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printf("Current exceeds regulator constraint limits\n");
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return CMD_RET_FAILURE;
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}
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ret = regulator_set_current(dev, current);
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if (ret)
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return failed("set", uc_pdata->name, "current value", ret);
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return CMD_RET_SUCCESS;
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}
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static int do_mode(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct udevice *dev;
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struct dm_regulator_uclass_platdata *uc_pdata;
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int new_mode;
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int mode;
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int ret;
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ret = get_curr_dev_and_pl(&dev, &uc_pdata, false);
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if (ret)
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return ret;
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if (argc == 1) {
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mode = regulator_get_mode(dev);
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if (mode < 0)
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return failed("get", uc_pdata->name, "mode", mode);
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printf("mode id: %d\n", mode);
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return CMD_RET_SUCCESS;
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}
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new_mode = simple_strtoul(argv[1], NULL, 0);
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ret = regulator_set_mode(dev, new_mode);
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if (ret)
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return failed("set", uc_pdata->name, "mode", ret);
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return CMD_RET_SUCCESS;
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}
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static int do_enable(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct udevice *dev;
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struct dm_regulator_uclass_platdata *uc_pdata;
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int ret;
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ret = get_curr_dev_and_pl(&dev, &uc_pdata, true);
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if (ret)
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return ret;
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ret = regulator_set_enable(dev, true);
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if (ret)
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return failed("enable", "regulator", uc_pdata->name, ret);
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return CMD_RET_SUCCESS;
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}
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static int do_disable(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct udevice *dev;
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struct dm_regulator_uclass_platdata *uc_pdata;
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int ret;
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ret = get_curr_dev_and_pl(&dev, &uc_pdata, true);
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if (ret)
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return ret;
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ret = regulator_set_enable(dev, false);
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if (ret)
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return failed("disable", "regulator", uc_pdata->name, ret);
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return CMD_RET_SUCCESS;
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}
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static cmd_tbl_t subcmd[] = {
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U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
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U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
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U_BOOT_CMD_MKENT(info, 2, 1, do_info, "", ""),
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U_BOOT_CMD_MKENT(status, 2, 1, do_status, "", ""),
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U_BOOT_CMD_MKENT(value, 3, 1, do_value, "", ""),
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U_BOOT_CMD_MKENT(current, 3, 1, do_current, "", ""),
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U_BOOT_CMD_MKENT(mode, 2, 1, do_mode, "", ""),
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U_BOOT_CMD_MKENT(enable, 1, 1, do_enable, "", ""),
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U_BOOT_CMD_MKENT(disable, 1, 1, do_disable, "", ""),
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};
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static int do_regulator(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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cmd_tbl_t *cmd;
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argc--;
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argv++;
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cmd = find_cmd_tbl(argv[0], subcmd, ARRAY_SIZE(subcmd));
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if (cmd == NULL || argc > cmd->maxargs)
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return CMD_RET_USAGE;
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return cmd->cmd(cmdtp, flag, argc, argv);
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}
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U_BOOT_CMD(regulator, CONFIG_SYS_MAXARGS, 1, do_regulator,
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"uclass operations",
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"list - list UCLASS regulator devices\n"
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"regulator dev [id] - show or [set] operating regulator device\n"
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"regulator [info] - print constraints info\n"
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"regulator [status] - print operating status\n"
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"regulator [value] [-f] - print/[set] voltage value [uV] (force)\n"
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"regulator [current] - print/[set] current value [uA]\n"
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"regulator [mode_id] - print/[set] operating mode id\n"
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"regulator [enable] - enable the regulator output\n"
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"regulator [disable] - disable the regulator output\n"
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);
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