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authorAxel Lin <axel.lin@ingics.com>2021-05-30 15:41:00 +0300
committerMark Brown <broonie@kernel.org>2021-06-01 16:03:03 +0300
commit86ab21cc39e6b99b7065ab9008c90bec5dec535a (patch)
tree8490c657dc6a57ebc7c518486ab64625fc15a104 /drivers/regulator
parenta072cbda97a9367a84d46e7bf78a47abdbfcaea8 (diff)
downloadlinux-86ab21cc39e6b99b7065ab9008c90bec5dec535a.tar.xz
regulator: rtmv20: Fix .set_current_limit/.get_current_limit callbacks
Current code does not set .curr_table and .n_linear_ranges settings, so it cannot use the regulator_get/set_current_limit_regmap helpers. If we setup the curr_table, it will has 200 entries. Implement customized .set_current_limit/.get_current_limit callbacks instead. Fixes: b8c054a5eaf0 ("regulator: rtmv20: Adds support for Richtek RTMV20 load switch regulator") Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: ChiYuan Huang <cy_huang@richtek.com> Link: https://lore.kernel.org/r/20210530124101.477727-1-axel.lin@ingics.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/rtmv20-regulator.c42
1 files changed, 40 insertions, 2 deletions
diff --git a/drivers/regulator/rtmv20-regulator.c b/drivers/regulator/rtmv20-regulator.c
index 852fb2596ffd..5adc552dffd5 100644
--- a/drivers/regulator/rtmv20-regulator.c
+++ b/drivers/regulator/rtmv20-regulator.c
@@ -103,9 +103,47 @@ static int rtmv20_lsw_disable(struct regulator_dev *rdev)
return 0;
}
+static int rtmv20_lsw_set_current_limit(struct regulator_dev *rdev, int min_uA,
+ int max_uA)
+{
+ int sel;
+
+ if (min_uA > RTMV20_LSW_MAXUA || max_uA < RTMV20_LSW_MINUA)
+ return -EINVAL;
+
+ if (max_uA > RTMV20_LSW_MAXUA)
+ max_uA = RTMV20_LSW_MAXUA;
+
+ sel = (max_uA - RTMV20_LSW_MINUA) / RTMV20_LSW_STEPUA;
+
+ /* Ensure the selected setting is still in range */
+ if ((sel * RTMV20_LSW_STEPUA + RTMV20_LSW_MINUA) < min_uA)
+ return -EINVAL;
+
+ sel <<= ffs(rdev->desc->csel_mask) - 1;
+
+ return regmap_update_bits(rdev->regmap, rdev->desc->csel_reg,
+ rdev->desc->csel_mask, sel);
+}
+
+static int rtmv20_lsw_get_current_limit(struct regulator_dev *rdev)
+{
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(rdev->regmap, rdev->desc->csel_reg, &val);
+ if (ret)
+ return ret;
+
+ val &= rdev->desc->csel_mask;
+ val >>= ffs(rdev->desc->csel_mask) - 1;
+
+ return val * RTMV20_LSW_STEPUA + RTMV20_LSW_MINUA;
+}
+
static const struct regulator_ops rtmv20_regulator_ops = {
- .set_current_limit = regulator_set_current_limit_regmap,
- .get_current_limit = regulator_get_current_limit_regmap,
+ .set_current_limit = rtmv20_lsw_set_current_limit,
+ .get_current_limit = rtmv20_lsw_get_current_limit,
.enable = rtmv20_lsw_enable,
.disable = rtmv20_lsw_disable,
.is_enabled = regulator_is_enabled_regmap,