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power: qpnp-smbcharger: support ICL adjustments through DP_DM 

Support adjusting the usb ICL up and down through the DP_DM interface for
HVDCP 3.0.

CRs-Fixed: 930588
Change-Id: Ic24f946522d7ae0ec0a52f127118ac5a0d908277
Signed-off-by: Xiaozhe Shi <xiaozhes@codeaurora.org>
This commit is contained in:
Xiaozhe Shi 2015-10-29 16:45:51 -07:00 committed by Gerrit - the friendly Code Review server
parent 442f488036
commit c8cb98c268
1 changed files with 19 additions and 0 deletions
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19
drivers/power/qpnp-smbcharger.c
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@ -188,6 +188,7 @@ struct smbchg_chip {
bool flash_triggered;
bool icl_disabled;
u32 wa_flags;
int usb_icl_delta;
/* jeita and temperature */
bool batt_hot;
@ -325,6 +326,7 @@ enum icl_voters {
HVDCP_ICL_VOTER,
USER_ICL_VOTER,
WEAK_CHARGER_ICL_VOTER,
SW_AICL_ICL_VOTER,
NUM_ICL_VOTER,
};
@ -4425,6 +4427,8 @@ static void handle_usb_removal(struct smbchg_chip *chip)
pr_err("Couldn't set override rc = %d\n", rc);
vote(chip->usb_icl_votable, WEAK_CHARGER_ICL_VOTER, false, 0);
chip->usb_icl_delta = 0;
vote(chip->usb_icl_votable, SW_AICL_ICL_VOTER, false, 0);
restore_from_hvdcp_detection(chip);
}
@ -5261,6 +5265,7 @@ static int smbchg_hvdcp3_confirmed(struct smbchg_chip *chip)
static int smbchg_dp_dm(struct smbchg_chip *chip, int val)
{
int rc = 0;
int target_icl_vote_ma;
switch (val) {
case POWER_SUPPLY_DP_DM_PREPARE:
@ -5306,6 +5311,20 @@ static int smbchg_dp_dm(struct smbchg_chip *chip, int val)
chip->hvdcp3_supported = true;
pr_smb(PR_MISC, "HVDCP3 supported\n");
break;
case POWER_SUPPLY_DP_DM_ICL_DOWN:
chip->usb_icl_delta -= 100;
target_icl_vote_ma = get_client_vote(chip->usb_icl_votable,
PSY_ICL_VOTER);
vote(chip->usb_icl_votable, SW_AICL_ICL_VOTER, true,
target_icl_vote_ma + chip->usb_icl_delta);
break;
case POWER_SUPPLY_DP_DM_ICL_UP:
chip->usb_icl_delta += 100;
target_icl_vote_ma = get_client_vote(chip->usb_icl_votable,
PSY_ICL_VOTER);
vote(chip->usb_icl_votable, SW_AICL_ICL_VOTER, true,
target_icl_vote_ma + chip->usb_icl_delta);
break;
default:
break;
}