[PATCH 02/10] commands: regulator: add support for enabling/disabling regulators

[Ahmad Fatoum]

For testing regulator drivers, it can be handy to enable/disable them
from the shell prompt. Extend the regulator command to support this.

Signed-off-by: Ahmad Fatoum <a.fat...@pengutronix.de>
---
 drivers/regulator/core.c | 67 +++++++++++++++++++++++++++++++++++-----
 1 file changed, 60 insertions(+), 7 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 591e44c15407..4ebad3f906ad 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -388,22 +388,75 @@ static void regulator_print_one(struct regulator_internal 
*ri)
 #include <common.h>
 #include <command.h>
 #include <regulator.h>
+#include <getopt.h>
 
 static int do_regulator(int argc, char *argv[])
 {
-       struct regulator_internal *ri;
+       struct regulator_internal *ri, *chosen = NULL;
+       int opt;
 
-       printf("%-20s %6s %10s %10s\n", "name", "enable", "min_uv", "max_uv");
-       list_for_each_entry(ri, &regulator_list, list)
-               regulator_print_one(ri);
+       if (argc == 1) {
+               printf("%-20s %6s %10s %10s\n", "name", "enable", "min_uv", 
"max_uv");
+               list_for_each_entry(ri, &regulator_list, list)
+                       regulator_print_one(ri);
 
-       return 0;
+               return 0;
+       }
+
+       while ((opt = getopt(argc, argv, "r:")) > 0) {
+               switch (opt) {
+               case 'r':
+                       if (chosen)
+                               return COMMAND_ERROR_USAGE;
+
+                       list_for_each_entry(ri, &regulator_list, list) {
+                               if (!strcmp(ri->name, optarg)) {
+                                       chosen = ri;
+                                       break;
+                               }
+                       }
+
+                       break;
+               default:
+                       return COMMAND_ERROR_USAGE;
+               }
+       }
+
+
+       if (!chosen) {
+               printf("regulator not found.\n");
+               return COMMAND_ERROR;
+       }
+
+       if (argc != optind + 1) {
+               printf("Operation must be specified\n");
+               return COMMAND_ERROR_USAGE;
+       }
+
+       if (!strcmp(argv[optind], "enable"))
+               return regulator_enable_internal(chosen);
+
+       if (!strcmp(argv[optind], "disable"))
+               return regulator_disable_internal(chosen);
+
+       printf("Unknown operation '%s'\n", argv[optind]);
+
+       return COMMAND_ERROR_USAGE;
 }
 
+BAREBOX_CMD_HELP_START(regulator)
+BAREBOX_CMD_HELP_TEXT("List and control regulators.")
+BAREBOX_CMD_HELP_TEXT("Without a parameter, displays available regulators.")
+BAREBOX_CMD_HELP_TEXT("Options:")
+BAREBOX_CMD_HELP_OPT("-r REGULATOR\t", "regulator name")
+BAREBOX_CMD_HELP_END
+
 BAREBOX_CMD_START(regulator)
        .cmd            = do_regulator,
-       BAREBOX_CMD_DESC("list regulators")
-       BAREBOX_CMD_GROUP(CMD_GRP_INFO)
+       BAREBOX_CMD_DESC("list and control regulators")
+       BAREBOX_CMD_OPTS("[-r REGULATOR] [enable | disable]")
+       BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
+       BAREBOX_CMD_HELP(cmd_regulator_help)
 BAREBOX_CMD_END
 
 #endif
-- 
2.24.0.rc1


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