evie/android_kernel_oneplus_msm8998
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leds: qpnp-wled: Reconfigure SWIRE_AVDD default voltage selectively

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In certain PMICs, when WLED is configured for AMOLED panels, AVDD
default voltage configured for SWIRE mode has to be reconfigured
every time WLED module is disabled and enabled. Otherwise, AVDD
voltage can stay at the previous voltage level configured through
SWIRE pulses. Add support for it.

CRs-Fixed: 1071936
Change-Id: I938ce65f42eebe31be27151281d7e8502ba29f6e
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
This commit is contained in:
Subbaraman Narayanamurthy 2016-12-09 12:28:52 -08:00
parent fdacf60f19
commit cf1d50169a
1 changed files with 39 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

48
drivers/leds/leds-qpnp-wled.c
View file

@ -465,6 +465,24 @@ out:
return rc;
}
static int qpnp_wled_swire_avdd_config(struct qpnp_wled *wled)
{
int rc;
u8 val;
if (wled->pmic_rev_id->pmic_subtype != PMI8998_SUBTYPE &&
wled->pmic_rev_id->pmic_subtype != PM2FALCON_SUBTYPE)
return 0;
if (!wled->disp_type_amoled || wled->avdd_mode_spmi)
return 0;
val = QPNP_WLED_AVDD_MV_TO_REG(wled->avdd_target_voltage_mv);
rc = qpnp_wled_write_reg(wled,
QPNP_WLED_SWIRE_AVDD_REG(wled->ctrl_base), val);
return rc;
}
static int qpnp_wled_sync_reg_toggle(struct qpnp_wled *wled)
{
int rc;
@ -884,8 +902,20 @@ static void qpnp_wled_work(struct work_struct *work)
}
if (!!level != wled->prev_state) {
rc = qpnp_wled_module_en(wled, wled->ctrl_base, !!level);
if (!!level) {
/*
* For AMOLED display in pmi8998, SWIRE_AVDD_DEFAULT has
* to be reconfigured every time the module is enabled.
*/
rc = qpnp_wled_swire_avdd_config(wled);
if (rc < 0) {
pr_err("Write to SWIRE_AVDD_DEFAULT register failed rc:%d\n",
rc);
goto unlock_mutex;
}
}
rc = qpnp_wled_module_en(wled, wled->ctrl_base, !!level);
if (rc) {
dev_err(&wled->pdev->dev, "wled %sable failed\n",
level ? "en" : "dis");
@ -1246,22 +1276,22 @@ static int qpnp_wled_avdd_mode_config(struct qpnp_wled *wled)
wled->avdd_target_voltage_mv = QPNP_WLED_AVDD_MIN_MV;
}
reg = QPNP_WLED_AVDD_MV_TO_REG(wled->avdd_target_voltage_mv);
if (wled->avdd_mode_spmi) {
reg = QPNP_WLED_AVDD_MV_TO_REG(wled->avdd_target_voltage_mv);
reg |= QPNP_WLED_AVDD_SEL_SPMI_BIT;
rc = qpnp_wled_write_reg(wled,
QPNP_WLED_AMOLED_VOUT_REG(wled->ctrl_base),
reg);
if (rc < 0)
pr_err("Write to AMOLED_VOUT register failed, rc=%d\n",
rc);
} else {
rc = qpnp_wled_write_reg(wled,
QPNP_WLED_SWIRE_AVDD_REG(wled->ctrl_base),
reg);
rc = qpnp_wled_swire_avdd_config(wled);
if (rc < 0)
pr_err("Write to SWIRE_AVDD_DEFAULT register failed rc:%d\n",
rc);
}
if (rc < 0)
dev_err(&wled->pdev->dev, "Write to VOUT/AVDD register failed, rc=%d\n",
rc);
return rc;
}