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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 BayLibre, SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
*/
#include <common.h>
#include <command.h>
#include <dm.h>
#include <adc.h>
static int do_adc_list(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
int ret;
ret = uclass_first_device_err(UCLASS_ADC, &dev);
if (ret) {
printf("No available ADC device\n");
return CMD_RET_FAILURE;
}
do {
printf("- %s\n", dev->name);
ret = uclass_next_device(&dev);
if (ret)
return CMD_RET_FAILURE;
} while (dev);
return CMD_RET_SUCCESS;
}
static int do_adc_info(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
unsigned int data_mask, ch_mask;
int ret, vss, vdd;
if (argc < 2)
return CMD_RET_USAGE;
ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
if (ret) {
printf("Unknown ADC device %s\n", argv[1]);
return CMD_RET_FAILURE;
}
printf("ADC Device '%s' :\n", argv[1]);
ret = adc_channel_mask(dev, &ch_mask);
if (!ret)
printf("channel mask: %x\n", ch_mask);
ret = adc_data_mask(dev, &data_mask);
if (!ret)
printf("data mask: %x\n", data_mask);
ret = adc_vdd_value(dev, &vdd);
if (!ret)
printf("vdd: %duV\n", vdd);
ret = adc_vss_value(dev, &vss);
if (!ret)
printf("vss: %duV\n", vss);
return CMD_RET_SUCCESS;
}
static int do_adc_single(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
unsigned int data;
int ret, uV;
if (argc < 3)
return CMD_RET_USAGE;
ret = adc_channel_single_shot(argv[1], simple_strtol(argv[2], NULL, 0),
&data);
if (ret) {
printf("Error getting single shot for device %s channel %s\n",
argv[1], argv[2]);
return CMD_RET_FAILURE;
}
ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
if (!ret && !adc_raw_to_uV(dev, data, &uV))
printf("%u, %d uV\n", data, uV);
else
printf("%u\n", data);
return CMD_RET_SUCCESS;
}
static cmd_tbl_t cmd_adc_sub[] = {
U_BOOT_CMD_MKENT(list, 1, 1, do_adc_list, "", ""),
U_BOOT_CMD_MKENT(info, 2, 1, do_adc_info, "", ""),
U_BOOT_CMD_MKENT(single, 3, 1, do_adc_single, "", ""),
};
static int do_adc(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
cmd_tbl_t *c;
if (argc < 2)
return CMD_RET_USAGE;
/* Strip off leading 'adc' command argument */
argc--;
argv++;
c = find_cmd_tbl(argv[0], &cmd_adc_sub[0], ARRAY_SIZE(cmd_adc_sub));
if (c)
return c->cmd(cmdtp, flag, argc, argv);
else
return CMD_RET_USAGE;
}
static char adc_help_text[] =
"list - list ADC devices\n"
"adc info <name> - Get ADC device info\n"
"adc single <name> <channel> - Get Single data of ADC device channel";
U_BOOT_CMD(adc, 4, 1, do_adc, "ADC sub-system", adc_help_text);
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