On Sun, Nov 22, 2015 at 08:28:00PM +0100, Alexander Aring wrote:
> This patch adds support to call disable/enable for a specific regulator
> by name. This can be useful to test various linux boot tests in
> different regulator states or adding workarounds inside the bootloader
> when linux doesn't support to enable the regulator for probing.
>
> Signed-off-by: Alexander Aring <[email protected]>
> ---
> commands/regulator.c | 73
> ++++++++++++++++++++++++++++++++++++++++++++++--
> drivers/regulator/core.c | 30 ++++++++++++++++++++
> include/regulator.h | 12 ++++++++
> 3 files changed, 112 insertions(+), 3 deletions(-)
>
> diff --git a/commands/regulator.c b/commands/regulator.c
> index e0b704f..1fb1559 100644
> --- a/commands/regulator.c
> +++ b/commands/regulator.c
> @@ -18,17 +18,84 @@
> */
> #include <common.h>
> #include <command.h>
> +#include <getopt.h>
> #include <regulator.h>
>
> +static inline void regulator_setting_parse_error(int ret, const char *cmd)
> +{
> + perror(cmd);
> + if (ret == -ENOENT)
> + printf("check \"%s -l\" for possible regulator names.\n", cmd);
> +}
> +
> static int do_regulator(int argc, char *argv[])
> {
> - regulators_print();
> + char *name = NULL, *setting = NULL;
> + int opt, ret, print = 0;
> +
> + if (argc == 1)
> + return COMMAND_ERROR_USAGE;
> +
> + while ((opt = getopt(argc, argv, "ln:s:")) > 0) {
> + switch (opt) {
> + case 'l':
> + print = 1;
> + break;
> + case 'n':
> + name = optarg;
> + break;
> + case 's':
> + setting = optarg;
> + break;
> + default:
> + return COMMAND_ERROR_USAGE;
> + }
> + }
The usage is not very intuitive. How about creating separate
regulator_enable / regulator_disable commands? These would be easy to
use then and wouldn't require clever option parsing.
> diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
> index 73f5c6e..de764f3 100644
> --- a/drivers/regulator/core.c
> +++ b/drivers/regulator/core.c
> @@ -345,3 +345,33 @@ void regulators_print(void)
> list_for_each_entry(ri, ®ulator_list, list)
> regulator_print_one(ri);
> }
> +
> +/*
> + * regulator_enable_by_name - enable regulator by internal regulator name
> + */
> +int regulator_enable_by_name(const char *name)
> +{
> + struct regulator_internal *ri;
> +
> + list_for_each_entry(ri, ®ulator_list, list) {
> + if (!strcmp(ri->name, name))
> + return regulator_enable_internal(ri);
> + }
> +
> + return -ENOENT;
> +}
regulator_by_name() would be a useful addition, but I think introducing
a regulator_*_by name set of functions is a bit too much, given that we
might also need set/get voltage and maybe other functions.
Sascha
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