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
, ch_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_channel_mask(dev
, &ch_mask
);
54 printf("channel mask: %x\n", ch_mask
);
56 ret
= adc_data_mask(dev
, &data_mask
);
58 printf("data mask: %x\n", data_mask
);
60 ret
= adc_vdd_value(dev
, &vdd
);
62 printf("vdd: %duV\n", vdd
);
64 ret
= adc_vss_value(dev
, &vss
);
66 printf("vss: %duV\n", vss
);
68 return CMD_RET_SUCCESS
;
71 static int do_adc_single(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
81 ret
= adc_channel_single_shot(argv
[1], simple_strtol(argv
[2], NULL
, 0),
84 printf("Error getting single shot for device %s channel %s\n",
86 return CMD_RET_FAILURE
;
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
);
95 return CMD_RET_SUCCESS
;
98 static int do_adc_scan(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
101 struct adc_channel ch
[ADC_MAX_CHANNEL
];
103 unsigned int ch_mask
;
104 int i
, chan
, ret
, uV
;
107 return CMD_RET_USAGE
;
109 ret
= uclass_get_device_by_name(UCLASS_ADC
, argv
[1], &dev
);
111 pr_err("Can't get the ADC %s: %d\n", argv
[1], ret
);
112 return CMD_RET_FAILURE
;
117 ch_mask
= simple_strtoul(argv
[2], NULL
, 0);
121 ret
= adc_channel_mask(dev
, &ch_mask
);
123 pr_err("Can't get mask for %s: %d\n", dev
->name
, ret
);
124 return CMD_RET_FAILURE
;
129 ret
= adc_channels_single_shot(dev
->name
, ch_mask
, ch
);
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
;
136 for (chan
= 0, i
= 0; chan
< ADC_MAX_CHANNEL
; chan
++) {
137 if (!(ch_mask
& ADC_CHANNEL(chan
)))
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
);
142 printf("[%02d]: %u\n", ch
[i
].id
, ch
[i
].data
);
146 return CMD_RET_SUCCESS
;
149 static 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";
155 U_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
));