1
2
3
4
5
6#include <common.h>
7#include <command.h>
8#include <dm.h>
9#include <adc.h>
10
11static int do_adc_list(struct cmd_tbl *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(struct cmd_tbl *cmdtp, int flag, int argc,
35 char *const argv[])
36{
37 struct udevice *dev;
38 unsigned int data_mask, ch_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_channel_mask(dev, &ch_mask);
53 if (!ret)
54 printf("channel mask: %x\n", ch_mask);
55
56 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
71static int do_adc_single(struct cmd_tbl *cmdtp, int flag, int argc,
72 char *const argv[])
73{
74 struct udevice *dev;
75 unsigned int data;
76 int ret, uV;
77
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) {
84 printf("Error getting single shot for device %s channel %s\n",
85 argv[1], argv[2]);
86 return CMD_RET_FAILURE;
87 }
88
89 ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
90 if (!ret && !adc_raw_to_uV(dev, data, &uV))
91 printf("%u, %d uV\n", data, uV);
92 else
93 printf("%u\n", data);
94
95 return CMD_RET_SUCCESS;
96}
97
98static int do_adc_scan(struct cmd_tbl *cmdtp, int flag, int argc,
99 char *const argv[])
100{
101 struct adc_channel ch[ADC_MAX_CHANNEL];
102 struct udevice *dev;
103 unsigned int ch_mask;
104 int i, chan, ret, uV;
105
106 if (argc < 2)
107 return CMD_RET_USAGE;
108
109 ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
110 if (ret) {
111 pr_err("Can't get the ADC %s: %d\n", argv[1], ret);
112 return CMD_RET_FAILURE;
113 }
114
115 switch (argc) {
116 case 3:
117 ch_mask = simple_strtoul(argv[2], NULL, 0);
118 if (ch_mask)
119 break;
120 case 2:
121 ret = adc_channel_mask(dev, &ch_mask);
122 if (ret) {
123 pr_err("Can't get mask for %s: %d\n", dev->name, ret);
124 return CMD_RET_FAILURE;
125 }
126 break;
127 }
128
129 ret = adc_channels_single_shot(dev->name, ch_mask, ch);
130 if (ret) {
131 pr_err("Can't get single shot for %s (chans mask: 0x%x): %d\n",
132 dev->name, ch_mask, ret);
133 return CMD_RET_FAILURE;
134 }
135
136 for (chan = 0, i = 0; chan < ADC_MAX_CHANNEL; chan++) {
137 if (!(ch_mask & ADC_CHANNEL(chan)))
138 continue;
139 if (!adc_raw_to_uV(dev, ch[i].data, &uV))
140 printf("[%02d]: %u, %d uV\n", ch[i].id, ch[i].data, uV);
141 else
142 printf("[%02d]: %u\n", ch[i].id, ch[i].data);
143 i++;
144 }
145
146 return CMD_RET_SUCCESS;
147}
148
149static char adc_help_text[] =
150 "list - list ADC devices\n"
151 "adc info <name> - Get ADC device info\n"
152 "adc single <name> <channel> - Get Single data of ADC device channel\n"
153 "adc scan <name> [channel mask] - Scan all [or masked] ADC channels";
154
155U_BOOT_CMD_WITH_SUBCMDS(adc, "ADC sub-system", adc_help_text,
156 U_BOOT_SUBCMD_MKENT(list, 1, 1, do_adc_list),
157 U_BOOT_SUBCMD_MKENT(info, 2, 1, do_adc_info),
158 U_BOOT_SUBCMD_MKENT(single, 3, 1, do_adc_single),
159 U_BOOT_SUBCMD_MKENT(scan, 3, 1, do_adc_scan));
160
