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https://github.com/brain-hackers/u-boot-brain
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dm: pmic: add pmic command
This is new command for the PMIC devices based on driver model PMIC API. Command features are unchanged: - list UCLASS pmic devices - show or [set] operating pmic device (NEW) - dump registers - read byte of register at address - write byte to register at address The only one change for this command is 'dev' subcommand. 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
af41e8db26
commit
d89fdcf9cf
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@ -460,4 +460,18 @@ config BOOTSTAGE_STASH_SIZE
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endmenu
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menu "Power commands"
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config CMD_PMIC
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bool "Enable Driver Model PMIC command"
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depends on DM_PMIC
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help
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This is the pmic command, based on a driver model pmic's API.
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Command features are unchanged:
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- list - list pmic devices
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- pmic dev <id> - show or [set] operating pmic device (NEW)
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- pmic dump - dump registers
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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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endmenu
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endmenu
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@ -211,6 +211,9 @@ obj-$(CONFIG_UPDATE_TFTP) += update.o
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obj-$(CONFIG_USB_KEYBOARD) += usb_kbd.o
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obj-$(CONFIG_CMD_DFU) += cmd_dfu.o
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obj-$(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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endif
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ifdef CONFIG_SPL_BUILD
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231
common/cmd_pmic.c
Normal file
231
common/cmd_pmic.c
Normal file
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@ -0,0 +1,231 @@
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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/pmic.h>
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#define LIMIT_SEQ 3
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#define LIMIT_DEVNAME 20
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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 pmic_dev_get(bool list_only, int get_seq, struct udevice **devp)
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{
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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_PMIC, &dev); dev;
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ret = uclass_next_device(&dev)) {
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if (list_only) {
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printf("|%*d | %-*.*s| %-*.*s| %s @ %d\n",
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LIMIT_SEQ, dev->seq,
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LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
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LIMIT_DEVNAME, LIMIT_DEVNAME, dev->parent->name,
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dev_get_uclass_name(dev->parent),
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dev->parent->seq);
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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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int seq, ret = -ENODEV;
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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_PMIC, seq, &currdev);
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if (ret && (ret = pmic_dev_get(false, seq, &currdev)))
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goto failed;
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case 1:
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if (!currdev)
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goto failed;
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printf("dev: %d @ %s\n", currdev->seq, currdev->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 do_list(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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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_DEVNAME, LIMIT_DEVNAME, "Parent name",
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"Parent uclass", "seq");
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for (ret = uclass_first_device(UCLASS_PMIC, &dev); dev;
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ret = uclass_next_device(&dev)) {
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printf("|%*d | %-*.*s| %-*.*s| %s @ %d\n",
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LIMIT_SEQ, dev->seq,
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LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
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LIMIT_DEVNAME, LIMIT_DEVNAME, dev->parent->name,
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dev_get_uclass_name(dev->parent), dev->parent->seq);
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}
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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 do_dump(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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uint8_t value;
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uint reg;
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int ret;
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if (!currdev)
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return failed("get", "current", "device", -ENODEV);
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dev = currdev;
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printf("Dump pmic: %s registers\n", dev->name);
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for (reg = 0; reg < pmic_reg_count(dev); reg++) {
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ret = pmic_read(dev, reg, &value, 1);
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if (ret)
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return failed("read", dev->name, "register", ret);
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if (!(reg % 16))
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printf("\n0x%02x: ", reg);
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printf("%2.2x ", value);
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}
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printf("\n");
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return CMD_RET_SUCCESS;
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}
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static int do_read(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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int regs, ret;
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uint8_t value;
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uint reg;
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if (!currdev)
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return failed("get", "current", "device", -ENODEV);
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dev = currdev;
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if (argc != 2)
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return CMD_RET_USAGE;
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reg = simple_strtoul(argv[1], NULL, 0);
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regs = pmic_reg_count(dev);
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if (reg > regs) {
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printf("Pmic max reg: %d\n", regs);
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return failed("read", "given", "address", -EFAULT);
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}
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ret = pmic_read(dev, reg, &value, 1);
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if (ret)
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return failed("read", dev->name, "register", ret);
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printf("0x%02x: 0x%2.2x\n", reg, value);
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return CMD_RET_SUCCESS;
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}
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static int do_write(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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int regs, ret;
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uint8_t value;
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uint reg;
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if (!currdev)
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return failed("get", "current", "device", -ENODEV);
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dev = currdev;
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if (argc != 3)
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return CMD_RET_USAGE;
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reg = simple_strtoul(argv[1], NULL, 0);
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regs = pmic_reg_count(dev);
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if (reg > regs) {
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printf("Pmic max reg: %d\n", regs);
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return failed("write", "given", "address", -EFAULT);
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}
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value = simple_strtoul(argv[2], NULL, 0);
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ret = pmic_write(dev, reg, &value, 1);
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if (ret)
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return failed("write", dev->name, "register", 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(dump, 1, 1, do_dump, "", ""),
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U_BOOT_CMD_MKENT(read, 2, 1, do_read, "", ""),
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U_BOOT_CMD_MKENT(write, 3, 1, do_write, "", ""),
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};
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static int do_pmic(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(pmic, CONFIG_SYS_MAXARGS, 1, do_pmic,
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" operations",
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"list - list pmic devices\n"
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"pmic dev [id] - show or [set] operating pmic device\n"
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"pmic dump - dump registers\n"
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"pmic read address - read byte of register at address\n"
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"pmic write address - write byte to register at address\n"
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);
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