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power: qpnp-smbcharger: add support for high current SDP/floating charger 

Add support to configure high ICL for SDP chargers, this is useful in case
of SDP or floating chargers which supports high current.
If 'qcom,override-usb-current' property is present override and set ICL
based on current reported by the USB driver otherwise set to USB500 mode.

CRs-Fixed: 963417
Change-Id: I31304cd2a4e710f4e450e6ec5a4da90c50fdfc88
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>
This commit is contained in:
Ashay Jaiswal 2016-03-25 23:26:39 +05:30 committed by Gerrit - the friendly Code Review server
parent 53357feb74
commit 979a694b75
2 changed files with 37 additions and 0 deletions
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3
Documentation/devicetree/bindings/power/qpnp-smbcharger.txt
View File

@ -285,6 +285,9 @@ Optional Properties:
detected based on GPIO.
- qcom,vchg_sns-adc Phandle of the VADC node.
- qcom,vchg-adc-channel-id The ADC channel to which the VCHG is routed.
- qcom,override-usb-current A boolean property to override the ICL limit
for USB charger(SDP) based on the current
reported by USB driver.
Example:
qcom,qpnp-smbcharger {

34
drivers/power/qpnp-smbcharger.c
View File

@ -140,6 +140,7 @@ struct smbchg_chip {
bool force_aicl_rerun;
bool hvdcp3_supported;
bool restricted_charging;
bool cfg_override_usb_current;
u8 original_usbin_allowance;
struct parallel_usb_cfg parallel;
struct delayed_work parallel_en_work;
@ -1558,6 +1559,35 @@ static int smbchg_set_usb_current_max(struct smbchg_chip *chip,
(chip->wa_flags & SMBCHG_USB100_WA))
current_ma = CURRENT_150_MA;
/* handle special SDP case when USB reports high current */
if (current_ma > CURRENT_900_MA) {
if (chip->cfg_override_usb_current) {
/*
* allow setting the current value as reported
* by USB driver.
*/
rc = smbchg_set_high_usb_chg_current(chip,
current_ma);
if (rc < 0) {
pr_err("Couldn't set %dmA rc = %d\n",
current_ma, rc);
goto out;
}
rc = smbchg_masked_write(chip,
chip->usb_chgpth_base + CMD_IL,
ICL_OVERRIDE_BIT, ICL_OVERRIDE_BIT);
if (rc < 0)
pr_err("Couldn't set ICL override rc = %d\n",
rc);
} else {
/* default to 500mA */
current_ma = CURRENT_500_MA;
}
pr_smb(PR_STATUS,
"override_usb_current=%d current_ma set to %d\n",
chip->cfg_override_usb_current, current_ma);
}
if (current_ma < CURRENT_150_MA) {
/* force 100mA */
rc = smbchg_sec_masked_write(chip,
@ -7079,6 +7109,10 @@ static int smb_parse_dt(struct smbchg_chip *chip)
chip->skip_usb_notification
= of_property_read_bool(node,
"qcom,skip-usb-notification");
chip->cfg_override_usb_current = of_property_read_bool(node,
"qcom,override-usb-current");
return 0;
}