Commit 401a1d31 authored May 05, 2017 by Subbaraman Narayanamurthy

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>

parent 56c0a94b

drivers/power/supply/qcom/qpnp-fg-gen3.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}