blob: c8857ed147e79c2be63920678f1b355955a37d2b [file] [log] [blame]
Neil Armstrong051ebe32018-04-27 15:17:57 +02001// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2018 BayLibre, SAS
4 * Author: Neil Armstrong <narmstrong@baylibre.com>
5 */
6#include <common.h>
7#include <command.h>
8#include <dm.h>
9#include <adc.h>
10
11static int do_adc_list(cmd_tbl_t *cmdtp, int flag, int argc,
12 char *const argv[])
13{
14 struct udevice *dev;
15 int ret;
16
17 ret = uclass_first_device_err(UCLASS_ADC, &dev);
18 if (ret) {
19 printf("No available ADC device\n");
20 return CMD_RET_FAILURE;
21 }
22
23 do {
24 printf("- %s\n", dev->name);
25
26 ret = uclass_next_device(&dev);
27 if (ret)
28 return CMD_RET_FAILURE;
29 } while (dev);
30
31 return CMD_RET_SUCCESS;
32}
33
34static int do_adc_info(cmd_tbl_t *cmdtp, int flag, int argc,
35 char *const argv[])
36{
37 struct udevice *dev;
38 unsigned int data_mask;
39 int ret, vss, vdd;
40
41 if (argc < 2)
42 return CMD_RET_USAGE;
43
44 ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
45 if (ret) {
46 printf("Unknown ADC device %s\n", argv[1]);
47 return CMD_RET_FAILURE;
48 }
49
50 printf("ADC Device '%s' :\n", argv[1]);
51
52 ret = adc_data_mask(dev, &data_mask);
53 if (!ret)
54 printf("data mask: %x\n", data_mask);
55
56 ret = adc_vdd_value(dev, &vdd);
57 if (!ret)
58 printf("vdd: %duV\n", vdd);
59
60 ret = adc_vss_value(dev, &vss);
61 if (!ret)
62 printf("vss: %duV\n", vss);
63
64 return CMD_RET_SUCCESS;
65}
66
67static int do_adc_single(cmd_tbl_t *cmdtp, int flag, int argc,
68 char *const argv[])
69{
70 unsigned int data;
71 int ret;
72
73 if (argc < 3)
74 return CMD_RET_USAGE;
75
76 ret = adc_channel_single_shot(argv[1], simple_strtol(argv[2], NULL, 0),
77 &data);
78 if (ret) {
79 printf("Error getting single shot for device %s channel %s\n",
80 argv[1], argv[2]);
81 return CMD_RET_FAILURE;
82 }
83
84 printf("%u\n", data);
85
86 return CMD_RET_SUCCESS;
87}
88
89static 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, "", ""),
93};
94
95static int do_adc(cmd_tbl_t *cmdtp, int flag, int argc,
96 char *const argv[])
97{
98 cmd_tbl_t *c;
99
100 if (argc < 2)
101 return CMD_RET_USAGE;
102
103 /* Strip off leading 'adc' command argument */
104 argc--;
105 argv++;
106
107 c = find_cmd_tbl(argv[0], &cmd_adc_sub[0], ARRAY_SIZE(cmd_adc_sub));
108
109 if (c)
110 return c->cmd(cmdtp, flag, argc, argv);
111 else
112 return CMD_RET_USAGE;
113}
114
115static 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";
119
120U_BOOT_CMD(adc, 4, 1, do_adc, "ADC sub-system", adc_help_text);