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git.ipfire.org Git - thirdparty/u-boot.git/blob - cmd/adc.c
1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2018 BayLibre, SAS
4 * Author: Neil Armstrong <narmstrong@baylibre.com>
11 static int do_adc_list(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
17 ret
= uclass_first_device_err(UCLASS_ADC
, &dev
);
19 printf("No available ADC device\n");
20 return CMD_RET_FAILURE
;
24 printf("- %s\n", dev
->name
);
26 ret
= uclass_next_device(&dev
);
28 return CMD_RET_FAILURE
;
31 return CMD_RET_SUCCESS
;
34 static int do_adc_info(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
38 unsigned int data_mask
;
44 ret
= uclass_get_device_by_name(UCLASS_ADC
, argv
[1], &dev
);
46 printf("Unknown ADC device %s\n", argv
[1]);
47 return CMD_RET_FAILURE
;
50 printf("ADC Device '%s' :\n", argv
[1]);
52 ret
= adc_data_mask(dev
, &data_mask
);
54 printf("data mask: %x\n", data_mask
);
56 ret
= adc_vdd_value(dev
, &vdd
);
58 printf("vdd: %duV\n", vdd
);
60 ret
= adc_vss_value(dev
, &vss
);
62 printf("vss: %duV\n", vss
);
64 return CMD_RET_SUCCESS
;
67 static int do_adc_single(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
76 ret
= adc_channel_single_shot(argv
[1], simple_strtol(argv
[2], NULL
, 0),
79 printf("Error getting single shot for device %s channel %s\n",
81 return CMD_RET_FAILURE
;
86 return CMD_RET_SUCCESS
;
89 static cmd_tbl_t cmd_adc_sub
[] = {
90 U_BOOT_CMD_MKENT(list
, 1, 1, do_adc_list
, "", ""),
91 U_BOOT_CMD_MKENT(info
, 2, 1, do_adc_info
, "", ""),
92 U_BOOT_CMD_MKENT(single
, 3, 1, do_adc_single
, "", ""),
95 static int do_adc(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
101 return CMD_RET_USAGE
;
103 /* Strip off leading 'adc' command argument */
107 c
= find_cmd_tbl(argv
[0], &cmd_adc_sub
[0], ARRAY_SIZE(cmd_adc_sub
));
110 return c
->cmd(cmdtp
, flag
, argc
, argv
);
112 return CMD_RET_USAGE
;
115 static char adc_help_text
[] =
116 "list - list ADC devices\n"
117 "adc info <name> - Get ADC device info\n"
118 "adc single <name> <channel> - Get Single data of ADC device channel";
120 U_BOOT_CMD(adc
, 4, 1, do_adc
, "ADC sub-system", adc_help_text
);