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| author | David Collins <collinsd@codeaurora.org> | 2018-05-11 18:46:47 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-05-17 14:11:19 +0900 |
| commit | 54557ad9737e28b06b632cce723ef2373fe6bf12 (patch) | |
| tree | 3c24811386ee5b8fd3a7b13310d4a1ad4f6bdc1c /drivers/regulator | |
| parent | d73e2842a3e236a1f58ba498e4d6ae58e18f660a (diff) | |
| download | linux-54557ad9737e28b06b632cce723ef2373fe6bf12.tar.gz | |
regulator: of: add support for allowed modes configuration
Add support for configuring the machine constraints valid_modes_mask element based on a list of allowed modes specified via a device tree property. Signed-off-by: David Collins <collinsd@codeaurora.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/of_regulator.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c index 0d3f73eacb99..d61fed28fdb9 100644 --- a/drivers/regulator/of_regulator.c +++ b/drivers/regulator/of_regulator.c @@ -32,7 +32,7 @@ static void of_get_regulation_constraints(struct device_node *np, struct regulator_state *suspend_state; struct device_node *suspend_np; unsigned int mode; - int ret, i; + int ret, i, len; u32 pval; constraints->name = of_get_property(np, "regulator-name", NULL); @@ -136,6 +136,33 @@ static void of_get_regulation_constraints(struct device_node *np, } } + len = of_property_count_elems_of_size(np, "regulator-allowed-modes", + sizeof(u32)); + if (len > 0) { + if (desc && desc->of_map_mode) { + for (i = 0; i < len; i++) { + ret = of_property_read_u32_index(np, + "regulator-allowed-modes", i, &pval); + if (ret) { + pr_err("%s: couldn't read allowed modes index %d, ret=%d\n", + np->name, i, ret); + break; + } + mode = desc->of_map_mode(pval); + if (mode == REGULATOR_MODE_INVALID) + pr_err("%s: invalid regulator-allowed-modes element %u\n", + np->name, pval); + else + constraints->valid_modes_mask |= mode; + } + if (constraints->valid_modes_mask) + constraints->valid_ops_mask + |= REGULATOR_CHANGE_MODE; + } else { + pr_warn("%s: mode mapping not defined\n", np->name); + } + } + if (!of_property_read_u32(np, "regulator-system-load", &pval)) constraints->system_load = pval; |