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Commit 2a4e16cb authored by Jishnu Prakash's avatar Jishnu Prakash
Browse files

iio: qcom-rradc: Set batt_id settling time to 80MS 



Set batt_id settling time to maximum possible value of
80MS to ensure enough time for ADC reading to settle to
correct value.

Change-Id: I40fb280ce4b34ab93abe40ddfe10d0fff71de12b
Signed-off-by: default avatarJishnu Prakash <jprakash@codeaurora.org>
parent 8df0c001

drivers/iio/adc/qcom-rradc.c

+9 −0
Original line number Diff line number Diff line
@@ -199,6 +199,8 @@ 
#define FG_RR_TP_REV_VERSION2		29

#define FG_RR_TP_REV_VERSION3		32



#define BATT_ID_SETTLE_DELAY_80_MS		0xE0



/*

 * The channel number is not a physical index in hardware,

 * rather it's a list of supported channels and an index to
@@ -861,6 +863,13 @@ static int rradc_do_batt_id_conversion(struct rradc_chip *chip, 
		return rc;

	}



	rc = rradc_masked_write(chip, FG_ADC_RR_BATT_ID_CFG,

			BATT_ID_SETTLE_DELAY_80_MS, BATT_ID_SETTLE_DELAY_80_MS);

	if (rc < 0) {

		pr_err("BATT_ID settling time config failed:%d\n", rc);

		ret = rc;

	}



	rc = rradc_masked_write(chip, FG_ADC_RR_BATT_ID_TRIGGER,

				FG_ADC_RR_BATT_ID_TRIGGER_CTL,

				FG_ADC_RR_BATT_ID_TRIGGER_CTL);