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https://github.com/brain-hackers/u-boot-brain
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![Boris Brezillon](/assets/img/avatar_default.png)
And you get sub-command auto-completion for free. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Tom Rini <trini@konsulko.com>
160 lines
3.6 KiB
C
160 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 BayLibre, SAS
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* Author: Neil Armstrong <narmstrong@baylibre.com>
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <adc.h>
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static int do_adc_list(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct udevice *dev;
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int ret;
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ret = uclass_first_device_err(UCLASS_ADC, &dev);
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if (ret) {
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printf("No available ADC device\n");
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return CMD_RET_FAILURE;
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}
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do {
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printf("- %s\n", dev->name);
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ret = uclass_next_device(&dev);
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if (ret)
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return CMD_RET_FAILURE;
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} while (dev);
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return CMD_RET_SUCCESS;
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}
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static int do_adc_info(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct udevice *dev;
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unsigned int data_mask, ch_mask;
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int ret, vss, vdd;
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if (argc < 2)
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return CMD_RET_USAGE;
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ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
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if (ret) {
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printf("Unknown ADC device %s\n", argv[1]);
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return CMD_RET_FAILURE;
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}
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printf("ADC Device '%s' :\n", argv[1]);
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ret = adc_channel_mask(dev, &ch_mask);
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if (!ret)
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printf("channel mask: %x\n", ch_mask);
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ret = adc_data_mask(dev, &data_mask);
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if (!ret)
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printf("data mask: %x\n", data_mask);
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ret = adc_vdd_value(dev, &vdd);
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if (!ret)
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printf("vdd: %duV\n", vdd);
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ret = adc_vss_value(dev, &vss);
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if (!ret)
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printf("vss: %duV\n", vss);
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return CMD_RET_SUCCESS;
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}
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static int do_adc_single(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct udevice *dev;
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unsigned int data;
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int ret, uV;
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if (argc < 3)
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return CMD_RET_USAGE;
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ret = adc_channel_single_shot(argv[1], simple_strtol(argv[2], NULL, 0),
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&data);
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if (ret) {
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printf("Error getting single shot for device %s channel %s\n",
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argv[1], argv[2]);
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return CMD_RET_FAILURE;
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}
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ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
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if (!ret && !adc_raw_to_uV(dev, data, &uV))
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printf("%u, %d uV\n", data, uV);
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else
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printf("%u\n", data);
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return CMD_RET_SUCCESS;
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}
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static int do_adc_scan(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct adc_channel ch[ADC_MAX_CHANNEL];
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struct udevice *dev;
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unsigned int ch_mask;
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int i, chan, ret, uV;
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if (argc < 2)
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return CMD_RET_USAGE;
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ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
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if (ret) {
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pr_err("Can't get the ADC %s: %d\n", argv[1], ret);
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return CMD_RET_FAILURE;
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}
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switch (argc) {
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case 3:
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ch_mask = simple_strtoul(argv[2], NULL, 0);
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if (ch_mask)
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break;
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case 2:
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ret = adc_channel_mask(dev, &ch_mask);
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if (ret) {
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pr_err("Can't get mask for %s: %d\n", dev->name, ret);
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return CMD_RET_FAILURE;
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}
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break;
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}
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ret = adc_channels_single_shot(dev->name, ch_mask, ch);
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if (ret) {
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pr_err("Can't get single shot for %s (chans mask: 0x%x): %d\n",
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dev->name, ch_mask, ret);
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return CMD_RET_FAILURE;
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}
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for (chan = 0, i = 0; chan < ADC_MAX_CHANNEL; chan++) {
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if (!(ch_mask & ADC_CHANNEL(chan)))
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continue;
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if (!adc_raw_to_uV(dev, ch[i].data, &uV))
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printf("[%02d]: %u, %d uV\n", ch[i].id, ch[i].data, uV);
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else
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printf("[%02d]: %u\n", ch[i].id, ch[i].data);
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i++;
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}
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return CMD_RET_SUCCESS;
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}
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static char adc_help_text[] =
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"list - list ADC devices\n"
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"adc info <name> - Get ADC device info\n"
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"adc single <name> <channel> - Get Single data of ADC device channel\n"
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"adc scan <name> [channel mask] - Scan all [or masked] ADC channels";
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U_BOOT_CMD_WITH_SUBCMDS(adc, "ADC sub-system", adc_help_text,
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U_BOOT_SUBCMD_MKENT(list, 1, 1, do_adc_list),
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U_BOOT_SUBCMD_MKENT(info, 2, 1, do_adc_info),
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U_BOOT_SUBCMD_MKENT(single, 3, 1, do_adc_single),
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U_BOOT_SUBCMD_MKENT(scan, 3, 1, do_adc_scan));
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