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regulator: qpnp-amoled: add support to configure single phase for IBB

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On certain PMICs like PM8350B, IBB can be configured in single or
dual or auto phase based on the panel configuration. Though dual
or auto phase is mostly used, forced single phase configuration
is needed for some hardware. Add support for it.

Change-Id: Ib7e9957485a45dccbcd0e9dc35e7a370a28ea52a
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
This commit is contained in:
Subbaraman Narayanamurthy 2020-05-06 17:59:09 -07:00
commit 2aaa840a58
1 changed files with 18 additions and 1 deletions
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19
drivers/regulator/qpnp-amoled-regulator.c
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@ -72,6 +72,7 @@ struct ibb_regulator {
/* DT params */
bool swire_control;
bool pd_control;
bool single_phase;
};
struct qpnp_amoled {
@ -301,6 +302,10 @@ static int qpnp_ibb_regulator_set_load(struct regulator_dev *rdev,
if (!is_phase_ctrl_supported(&chip->ibb))
return 0;
/* For IBB single phase, it's configured only once. */
if (chip->ibb.single_phase)
return 0;
if (load_uA < 0)
return -EINVAL;
else if (load_uA <= SINGLE_PHASE_ILIMIT_UA)
@ -491,6 +496,7 @@ static int qpnp_amoled_regulator_register(struct qpnp_amoled *chip,
static int qpnp_amoled_hw_init(struct qpnp_amoled *chip)
{
int rc;
u8 val;
rc = qpnp_amoled_regulator_register(chip, OLEDB);
if (rc < 0) {
@ -513,6 +519,15 @@ static int qpnp_amoled_hw_init(struct qpnp_amoled *chip)
return rc;
}
if (is_phase_ctrl_supported(&chip->ibb) && chip->ibb.single_phase) {
val = FORCE_SINGLE_PHASE_BIT;
rc = qpnp_amoled_masked_write(chip, IBB_DUAL_PHASE_CTL(chip),
IBB_DUAL_PHASE_CTL_MASK, val);
if (rc < 0)
return rc;
}
return 0;
}
@ -555,12 +570,14 @@ static int qpnp_amoled_parse_dt(struct qpnp_amoled *chip)
break;
case IBB_PERIPH_TYPE:
chip->ibb_base = base;
chip->ibb.subtype = val[1];
chip->ibb.vreg.node = temp;
chip->ibb.swire_control = of_property_read_bool(temp,
"qcom,swire-control");
chip->ibb.pd_control = of_property_read_bool(temp,
"qcom,aod-pd-control");
chip->ibb.subtype = val[1];
chip->ibb.single_phase = of_property_read_bool(temp,
"qcom,ibb-single-phase");
break;
default:
pr_err("Unknown peripheral type 0x%x\n", val[0]);