Add an 'adc' cli command to get adc devices informations and read single
shots datas.
Signed-off-by: Neil Armstrong <narmstr...@baylibre.com>
---
cmd/Kconfig | 8 ++++
cmd/Makefile | 1 +
cmd/adc.c | 121 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 130 insertions(+)
create mode 100644 cmd/adc.c
diff --git a/cmd/Kconfig b/cmd/Kconfig
index bc1d2f3..495c634 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -601,6 +601,14 @@ config CMD_ARMFLASH
help
ARM Ltd reference designs flash partition access
+config CMD_ADC
+ bool "adc - Access Analog to Digital Converters info and data"
+ select ADC
+ select DM_REGULATOR
+ help
+ Shows ADC device info and permit printing one-shot analog converted
+ data from a named Analog to Digital Converter.
+
config CMD_CLK
bool "clk - Show clock frequencies"
help
diff --git a/cmd/Makefile b/cmd/Makefile
index c4269ac..4c66353 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -14,6 +14,7 @@ obj-y += version.o
# command
obj-$(CONFIG_CMD_AES) += aes.o
+obj-$(CONFIG_CMD_ADC) += adc.o
obj-$(CONFIG_CMD_ARMFLASH) += armflash.o
obj-y += blk_common.o
obj-$(CONFIG_SOURCE) += source.o
diff --git a/cmd/adc.c b/cmd/adc.c
new file mode 100644
index 0000000..66d4a4a
--- /dev/null
+++ b/cmd/adc.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Neil Armstrong <narmstr...@baylibre.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <command.h>
+#include <dm.h>
+#include <adc.h>
+
+static int do_adc_list(cmd_tbl_t *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ struct udevice *dev;
+ int ret;
+
+ ret = uclass_first_device_err(UCLASS_ADC, &dev);
+ if (ret) {
+ printf("No available ADC device\n");
+ return CMD_RET_FAILURE;
+ }
+
+ do {
+ printf("- %s\n", dev->name);
+
+ ret = uclass_next_device(&dev);
+ if (ret)
+ return CMD_RET_FAILURE;
+ } while (dev);
+
+ return CMD_RET_SUCCESS;
+}
+
+static int do_adc_info(cmd_tbl_t *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ struct udevice *dev;
+ unsigned int data_mask;
+ int ret, vss, vdd;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
+ if (ret) {
+ printf("Unknown ADC device %s\n", argv[1]);
+ return CMD_RET_FAILURE;
+ }
+
+ printf("ADC Device '%s' :\n", argv[1]);
+
+ ret = adc_data_mask(dev, &data_mask);
+ if (!ret)
+ printf("data mask: %x\n", data_mask);
+
+ ret = adc_vdd_value(dev, &vdd);
+ if (!ret)
+ printf("vdd: %duV\n", vdd);
+
+ ret = adc_vss_value(dev, &vss);
+ if (!ret)
+ printf("vss: %duV\n", vss);
+
+ return CMD_RET_SUCCESS;
+}
+
+static int do_adc_single(cmd_tbl_t *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ unsigned int data;
+ int ret;
+
+ if (argc < 3)
+ return CMD_RET_USAGE;
+
+ ret = adc_channel_single_shot(argv[1], simple_strtol(argv[2], NULL, 0),
+ &data);
+ if (ret) {
+ printf("Error getting single shot for device %s channel %s\n",
+ argv[1], argv[2]);
+ return CMD_RET_FAILURE;
+ }
+
+ printf("%u\n", data);
+
+ return CMD_RET_SUCCESS;
+}
+
+static cmd_tbl_t cmd_adc_sub[] = {
+ U_BOOT_CMD_MKENT(list, 1, 1, do_adc_list, "", ""),
+ U_BOOT_CMD_MKENT(info, 2, 1, do_adc_info, "", ""),
+ U_BOOT_CMD_MKENT(single, 3, 1, do_adc_single, "", ""),
+};
+
+static int do_adc(cmd_tbl_t *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ cmd_tbl_t *c;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ /* Strip off leading 'adc' command argument */
+ argc--;
+ argv++;
+
+ c = find_cmd_tbl(argv[0], &cmd_adc_sub[0], ARRAY_SIZE(cmd_adc_sub));
+
+ if (c)
+ return c->cmd(cmdtp, flag, argc, argv);
+ else
+ return CMD_RET_USAGE;
+}
+
+static char adc_help_text[] =
+ "list - list ADC devices\n"
+ "adc info <name> - Get ADC device info\n"
+ "adc single <name> <channel> - Get Single data of ADC device channel";
+
+U_BOOT_CMD(adc, 4, 1, do_adc, "ADC sub-system", adc_help_text);
--
2.7.4
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