diff options
author | Heiko Stuebner <heiko.stuebner@bqreaders.com> | 2014-02-12 01:01:42 +0100 |
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committer | Mark Brown <broonie@linaro.org> | 2014-02-12 15:51:25 +0000 |
commit | 5c24d355dd9af29abb25fb3891122af5e80a551d (patch) | |
tree | e493f5910d2ad6af1131cae38aed62fe95bcb7a5 /drivers/regulator/ti-abb-regulator.c | |
parent | 13cf4ea01abcc7868c64ce0f26dd5cb3abafda4c (diff) | |
download | linux-5c24d355dd9af29abb25fb3891122af5e80a551d.tar.bz2 |
regulator: ti-abb-regulator: do not open-code counting and access of dt array elements
Open coding the counting of elements in a dt-property is abstracted by the newly
introduced of_property_count_uXX_elems functions. Additionally the raw iteration
over the states element exposes the endian conversion and dtb-format details,
which according to Mark Rutland "would be nice to limit [...] to of_ helper
functions".
Thus change ti-abb-regulator to use the helper for element counting and
of_property_read_u32_index for retrieval of individual values.
This makes it possible to remove the raw access to the property entirely.
Signed-off-by: Heiko Stuebner <heiko.stuebner@bqreaders.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator/ti-abb-regulator.c')
-rw-r--r-- | drivers/regulator/ti-abb-regulator.c | 43 |
1 files changed, 20 insertions, 23 deletions
diff --git a/drivers/regulator/ti-abb-regulator.c b/drivers/regulator/ti-abb-regulator.c index a97d0c5e1097..804c83a31d69 100644 --- a/drivers/regulator/ti-abb-regulator.c +++ b/drivers/regulator/ti-abb-regulator.c @@ -507,32 +507,24 @@ static int ti_abb_init_table(struct device *dev, struct ti_abb *abb, struct regulator_init_data *rinit_data) { struct ti_abb_info *info; - const struct property *prop; - const __be32 *abb_info; const u32 num_values = 6; char *pname = "ti,abb_info"; - u32 num_entries, i; + u32 i; unsigned int *volt_table; - int min_uV = INT_MAX, max_uV = 0; + int num_entries, min_uV = INT_MAX, max_uV = 0; struct regulation_constraints *c = &rinit_data->constraints; - prop = of_find_property(dev->of_node, pname, NULL); - if (!prop) { - dev_err(dev, "No '%s' property?\n", pname); - return -ENODEV; - } - - if (!prop->value) { - dev_err(dev, "Empty '%s' property?\n", pname); - return -ENODATA; - } - /* * Each abb_info is a set of n-tuple, where n is num_values, consisting * of voltage and a set of detection logic for ABB information for that * voltage to apply. */ - num_entries = prop->length / sizeof(u32); + num_entries = of_property_count_u32_elems(dev->of_node, pname); + if (num_entries < 0) { + dev_err(dev, "No '%s' property?\n", pname); + return -ENODEV; + } + if (!num_entries || (num_entries % num_values)) { dev_err(dev, "All '%s' list entries need %d vals\n", pname, num_values); @@ -561,18 +553,23 @@ static int ti_abb_init_table(struct device *dev, struct ti_abb *abb, /* We do not know where the OPP voltage is at the moment */ abb->current_info_idx = -EINVAL; - abb_info = prop->value; for (i = 0; i < num_entries; i++, info++, volt_table++) { u32 efuse_offset, rbb_mask, fbb_mask, vset_mask; u32 efuse_val; /* NOTE: num_values should equal to entries picked up here */ - *volt_table = be32_to_cpup(abb_info++); - info->opp_sel = be32_to_cpup(abb_info++); - efuse_offset = be32_to_cpup(abb_info++); - rbb_mask = be32_to_cpup(abb_info++); - fbb_mask = be32_to_cpup(abb_info++); - vset_mask = be32_to_cpup(abb_info++); + of_property_read_u32_index(dev->of_node, pname, i * num_values, + volt_table); + of_property_read_u32_index(dev->of_node, pname, + i * num_values + 1, &info->opp_sel); + of_property_read_u32_index(dev->of_node, pname, + i * num_values + 2, &efuse_offset); + of_property_read_u32_index(dev->of_node, pname, + i * num_values + 3, &rbb_mask); + of_property_read_u32_index(dev->of_node, pname, + i * num_values + 4, &fbb_mask); + of_property_read_u32_index(dev->of_node, pname, + i * num_values + 5, &vset_mask); dev_dbg(dev, "[%d]v=%d ABB=%d ef=0x%x rbb=0x%x fbb=0x%x vset=0x%x\n", |