diff options
| author | Subbaraman Narayanamurthy <subbaram@codeaurora.org> | 2017-05-05 14:07:53 -0700 |
|---|---|---|
| committer | Subbaraman Narayanamurthy <subbaram@codeaurora.org> | 2017-05-05 14:07:53 -0700 |
| commit | d2af865c75e44cdec12541c0f9e4ddbbd9901836 (patch) | |
| tree | 5c0d4ff8ddd9f7127b00a297ecd49cf39ed6c868 /drivers/power | |
| parent | 8312e8d304dc9b0cbaf1b66d5ddf02b41df39343 (diff) | |
power: qpnp-fg-gen3: Disable ESR pulldown for debug battery id
Even with proper ESR pulse qualification threshold and ESR pulse
amplitude, ESR pulses are still seen occasionally on devices
that use battery with debug battery id. Disable ESR pulldown when
debug battery id is found. This helps saving power by stopping
ESR pulses.
Change-Id: I2b9588ec39a2268123d94c06517b0dbb43d66fc7
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/qcom/qpnp-fg-gen3.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/power/supply/qcom/qpnp-fg-gen3.c b/drivers/power/supply/qcom/qpnp-fg-gen3.c index 4368709118ac..d0f7a5e1e227 100644 --- a/drivers/power/supply/qcom/qpnp-fg-gen3.c +++ b/drivers/power/supply/qcom/qpnp-fg-gen3.c @@ -3366,6 +3366,16 @@ static int fg_hw_init(struct fg_chip *chip) return rc; } + if (is_debug_batt_id(chip)) { + val = ESR_NO_PULL_DOWN; + rc = fg_masked_write(chip, BATT_INFO_ESR_PULL_DN_CFG(chip), + ESR_PULL_DOWN_MODE_MASK, val); + if (rc < 0) { + pr_err("Error in writing esr_pull_down, rc=%d\n", rc); + return rc; + } + } + return 0; } |