From 7d200b283aa049fcda0d43dd6e03e9e783d2799c Mon Sep 17 00:00:00 2001
From: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Date: Wed, 13 Jan 2021 16:18:07 +0100
Subject: [PATCH] iio:adc:qcom-spmi-vadc: add default scale to LR_MUX2_BAT_ID channel
Git-commit: 7d200b283aa049fcda0d43dd6e03e9e783d2799c
Patch-mainline: v5.12-rc4
References: git-fixes

Checking at both msm8909-pm8916.dtsi and msm8916.dtsi from downstream
it is indicated that "batt_id" channel has to be scaled with the default
Function: 

	chan@31 {
		label = "batt_id";
		reg = <0x31>;
		qcom,decimation = <0>;
		qcom,pre-div-channel-scaling = <0>;
		qcom,calibration-type = "ratiometric";
		qcom,scale-function = <0>;
		qcom,hw-settle-time = <0xb>;
		qcom,fast-avg-setup = <0>;
	};

Change LR_MUX2_BAT_ID scaling accordingly.

Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Fixes: 7c271eea7b8a ("iio: adc: spmi-vadc: Changes to support different scaling")
Link: https://lore.kernel.org/r/20210113151808.4628-2-jonathan.albrieux@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/iio/adc/qcom-spmi-vadc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c
index b0388f8a69f4..7e7d408452ec 100644
--- a/drivers/iio/adc/qcom-spmi-vadc.c
+++ b/drivers/iio/adc/qcom-spmi-vadc.c
@@ -598,7 +598,7 @@ static const struct vadc_channels vadc_chans[] = {
 	VADC_CHAN_NO_SCALE(P_MUX16_1_3, 1)
 
 	VADC_CHAN_NO_SCALE(LR_MUX1_BAT_THERM, 0)
-	VADC_CHAN_NO_SCALE(LR_MUX2_BAT_ID, 0)
+	VADC_CHAN_VOLT(LR_MUX2_BAT_ID, 0, SCALE_DEFAULT)
 	VADC_CHAN_NO_SCALE(LR_MUX3_XO_THERM, 0)
 	VADC_CHAN_NO_SCALE(LR_MUX4_AMUX_THM1, 0)
 	VADC_CHAN_NO_SCALE(LR_MUX5_AMUX_THM2, 0)
-- 
2.26.2