blob: 195efa8661c6772c4a93fa3932d8e66f6ee2480c [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
Simon Glass09140112020-05-10 11:40:03 -060011static int do_adc_list(struct cmd_tbl *cmdtp, int flag, int argc,
Neil Armstrong051ebe32018-04-27 15:17:57 +020012 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
Simon Glass09140112020-05-10 11:40:03 -060034static int do_adc_info(struct cmd_tbl *cmdtp, int flag, int argc,
Neil Armstrong051ebe32018-04-27 15:17:57 +020035 char *const argv[])
36{
37 struct udevice *dev;
Fabrice Gasnier1c84d902018-11-12 14:03:59 +010038 unsigned int data_mask, ch_mask;
Neil Armstrong051ebe32018-04-27 15:17:57 +020039 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
Fabrice Gasnier1c84d902018-11-12 14:03:59 +010052 ret = adc_channel_mask(dev, &ch_mask);
53 if (!ret)
54 printf("channel mask: %x\n", ch_mask);
55
Neil Armstrong051ebe32018-04-27 15:17:57 +020056 ret = adc_data_mask(dev, &data_mask);
57 if (!ret)
58 printf("data mask: %x\n", data_mask);
59
60 ret = adc_vdd_value(dev, &vdd);
61 if (!ret)
62 printf("vdd: %duV\n", vdd);
63
64 ret = adc_vss_value(dev, &vss);
65 if (!ret)
66 printf("vss: %duV\n", vss);
67
68 return CMD_RET_SUCCESS;
69}
70
Simon Glass09140112020-05-10 11:40:03 -060071static int do_adc_single(struct cmd_tbl *cmdtp, int flag, int argc,
Neil Armstrong051ebe32018-04-27 15:17:57 +020072 char *const argv[])
73{
Fabrice Gasnierc56fc492018-11-12 14:04:00 +010074 struct udevice *dev;
Neil Armstrong051ebe32018-04-27 15:17:57 +020075 unsigned int data;
Marek Vasut9de612a2022-04-14 18:52:25 +020076 int ret, uV, val;
Neil Armstrong051ebe32018-04-27 15:17:57 +020077
78 if (argc < 3)
79 return CMD_RET_USAGE;
80
81 ret = adc_channel_single_shot(argv[1], simple_strtol(argv[2], NULL, 0),
82 &data);
83 if (ret) {
Samuel Dionne-Riel4a054972021-12-20 18:23:45 -050084 printf("Error getting single shot for device %s channel %s (ret=%d)\n",
85 argv[1], argv[2], ret);
Neil Armstrong051ebe32018-04-27 15:17:57 +020086 return CMD_RET_FAILURE;
87 }
88
Fabrice Gasnierc56fc492018-11-12 14:04:00 +010089 ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
Marek Vasut9de612a2022-04-14 18:52:25 +020090 if (!ret && !adc_raw_to_uV(dev, data, &uV)) {
91 val = uV;
Fabrice Gasnierc56fc492018-11-12 14:04:00 +010092 printf("%u, %d uV\n", data, uV);
Marek Vasut9de612a2022-04-14 18:52:25 +020093 } else {
94 val = data;
Fabrice Gasnierc56fc492018-11-12 14:04:00 +010095 printf("%u\n", data);
Marek Vasut9de612a2022-04-14 18:52:25 +020096 }
97
Heinrich Schuchardt54d24d72022-04-25 22:26:45 +020098 env_set_ulong(argv[2], val);
Neil Armstrong051ebe32018-04-27 15:17:57 +020099
100 return CMD_RET_SUCCESS;
101}
102
Simon Glass09140112020-05-10 11:40:03 -0600103static int do_adc_scan(struct cmd_tbl *cmdtp, int flag, int argc,
Fabrice Gasnier61927d22018-11-12 14:04:01 +0100104 char *const argv[])
105{
106 struct adc_channel ch[ADC_MAX_CHANNEL];
107 struct udevice *dev;
108 unsigned int ch_mask;
109 int i, chan, ret, uV;
110
111 if (argc < 2)
112 return CMD_RET_USAGE;
113
114 ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
115 if (ret) {
116 pr_err("Can't get the ADC %s: %d\n", argv[1], ret);
117 return CMD_RET_FAILURE;
118 }
119
120 switch (argc) {
121 case 3:
122 ch_mask = simple_strtoul(argv[2], NULL, 0);
123 if (ch_mask)
124 break;
125 case 2:
126 ret = adc_channel_mask(dev, &ch_mask);
127 if (ret) {
128 pr_err("Can't get mask for %s: %d\n", dev->name, ret);
129 return CMD_RET_FAILURE;
130 }
131 break;
132 }
133
134 ret = adc_channels_single_shot(dev->name, ch_mask, ch);
135 if (ret) {
136 pr_err("Can't get single shot for %s (chans mask: 0x%x): %d\n",
137 dev->name, ch_mask, ret);
138 return CMD_RET_FAILURE;
139 }
140
141 for (chan = 0, i = 0; chan < ADC_MAX_CHANNEL; chan++) {
142 if (!(ch_mask & ADC_CHANNEL(chan)))
143 continue;
144 if (!adc_raw_to_uV(dev, ch[i].data, &uV))
145 printf("[%02d]: %u, %d uV\n", ch[i].id, ch[i].data, uV);
146 else
147 printf("[%02d]: %u\n", ch[i].id, ch[i].data);
148 i++;
149 }
150
151 return CMD_RET_SUCCESS;
152}
153
Neil Armstrong051ebe32018-04-27 15:17:57 +0200154static char adc_help_text[] =
155 "list - list ADC devices\n"
156 "adc info <name> - Get ADC device info\n"
Marek Vasut9de612a2022-04-14 18:52:25 +0200157 "adc single <name> <channel> [varname] - Get Single data of ADC device channel\n"
Fabrice Gasnier61927d22018-11-12 14:04:01 +0100158 "adc scan <name> [channel mask] - Scan all [or masked] ADC channels";
Neil Armstrong051ebe32018-04-27 15:17:57 +0200159
Boris Brezillon9652cfd2018-12-03 22:54:23 +0100160U_BOOT_CMD_WITH_SUBCMDS(adc, "ADC sub-system", adc_help_text,
161 U_BOOT_SUBCMD_MKENT(list, 1, 1, do_adc_list),
162 U_BOOT_SUBCMD_MKENT(info, 2, 1, do_adc_info),
163 U_BOOT_SUBCMD_MKENT(single, 3, 1, do_adc_single),
164 U_BOOT_SUBCMD_MKENT(scan, 3, 1, do_adc_scan));