evie/android_kernel_oneplus_msm8998
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power: smb-lib: use updated ICL override bit

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Currently to override the ICL the self-clearing ICL override bit is
used. The problem with this bit is that it is self-clearing and a
separate register needs to be read to get the override status.
Furthermore, the hardware will automatically clear this bit on USB
removal.

A new ICL override bit was added in PMI hardware revision 2.0. This bit
is not self-clearing, and can be set prior to USB insertion. Use this
new bit.

Change-Id: I30a601b6aacba3c404ebdfb82e529504a694a048
Signed-off-by: Nicholas Troast <ntroast@codeaurora.org>
This commit is contained in:
Nicholas Troast 2017-03-15 10:45:28 -07:00
parent 13bdd014a7
commit fa12cb53c0
2 changed files with 7 additions and 31 deletions
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37
drivers/power/supply/qcom/smb-lib.c
View file

@ -161,39 +161,14 @@ static int smblib_get_jeita_cc_delta(struct smb_charger *chg, int *cc_delta_ua)
int smblib_icl_override(struct smb_charger *chg, bool override)
{
int rc;
bool override_status;
u8 stat;
u16 reg;
switch (chg->smb_version) {
case PMI8998_SUBTYPE:
reg = APSD_RESULT_STATUS_REG;
break;
case PM660_SUBTYPE:
reg = AICL_STATUS_REG;
break;
default:
smblib_dbg(chg, PR_MISC, "Unknown chip version=%x\n",
chg->smb_version);
return -EINVAL;
}
rc = smblib_masked_write(chg, USBIN_LOAD_CFG_REG,
ICL_OVERRIDE_AFTER_APSD_BIT,
override ? ICL_OVERRIDE_AFTER_APSD_BIT : 0);
if (rc < 0)
smblib_err(chg, "Couldn't override ICL rc=%d\n", rc);
rc = smblib_read(chg, reg, &stat);
if (rc < 0) {
smblib_err(chg, "Couldn't read reg=%x rc=%d\n", reg, rc);
return rc;
}
override_status = (bool)(stat & ICL_OVERRIDE_LATCH_BIT);
if (override != override_status) {
rc = smblib_masked_write(chg, CMD_APSD_REG,
ICL_OVERRIDE_BIT, ICL_OVERRIDE_BIT);
if (rc < 0) {
smblib_err(chg, "Couldn't override ICL rc=%d\n", rc);
return rc;
}
}
return 0;
return rc;
}
/********************

1
drivers/power/supply/qcom/smb-reg.h
View file

@ -628,6 +628,7 @@ enum {
#define USBIN_LOAD_CFG_REG (USBIN_BASE + 0x65)
#define USBIN_OV_CH_LOAD_OPTION_BIT BIT(7)
#define ICL_OVERRIDE_AFTER_APSD_BIT BIT(4)
#define USBIN_ICL_OPTIONS_REG (USBIN_BASE + 0x66)
#define CFG_USB3P0_SEL_BIT BIT(2)