From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Date: Sun, 1 Jan 2023 19:40:22 +0000 (+0200)
Subject: thermal/drivers/tsens: limit num_sensors to 9 for msm8939
X-Git-Tag: v6.1.21~1276
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=de92beb63a4b1b3ff01f747145e7f3a03774220a;p=platform%2Fkernel%2Flinux-starfive.git

thermal/drivers/tsens: limit num_sensors to 9 for msm8939

[ Upstream commit 903238a33c116edf5f64f7a3fd246e6169cccfa6 ]

On msm8939 last (hwid=10) sensor was added in the hw revision 3.0.
Calibration data for it was placed outside of the main calibration data
blob, so it is not accessible by the current blob-parsing code.

Moreover data for the sensor's p2 is not contiguous in the fuses. This
makes it hard to use nvmem_cell API to parse calibration data in a
generic way.

Since the sensor doesn't seem to be actually used by the existing
hardware, disable the sensor for now.

Fixes: 332bc8ebab2c ("thermal: qcom: tsens-v0_1: Add support for MSM8939")
Cc: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Cc: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://lore.kernel.org/r/20230101194034.831222-9-dmitry.baryshkov@linaro.org
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/thermal/qcom/tsens-v0_1.c b/drivers/thermal/qcom/tsens-v0_1.c
index f6d55e6..8d03672 100644
--- a/drivers/thermal/qcom/tsens-v0_1.c
+++ b/drivers/thermal/qcom/tsens-v0_1.c
@@ -285,7 +285,7 @@ static int calibrate_8939(struct tsens_priv *priv)
 	u32 p1[10], p2[10];
 	int mode = 0;
 	u32 *qfprom_cdata;
-	u32 cdata[6];
+	u32 cdata[4];
 
 	qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");
 	if (IS_ERR(qfprom_cdata))
@@ -296,8 +296,6 @@ static int calibrate_8939(struct tsens_priv *priv)
 	cdata[1] = qfprom_cdata[13];
 	cdata[2] = qfprom_cdata[0];
 	cdata[3] = qfprom_cdata[1];
-	cdata[4] = qfprom_cdata[22];
-	cdata[5] = qfprom_cdata[21];
 
 	mode = (cdata[0] & MSM8939_CAL_SEL_MASK) >> MSM8939_CAL_SEL_SHIFT;
 	dev_dbg(priv->dev, "calibration mode is %d\n", mode);
@@ -314,8 +312,6 @@ static int calibrate_8939(struct tsens_priv *priv)
 		p2[6] = (cdata[2] & MSM8939_S6_P2_MASK) >> MSM8939_S6_P2_SHIFT;
 		p2[7] = (cdata[3] & MSM8939_S7_P2_MASK) >> MSM8939_S7_P2_SHIFT;
 		p2[8] = (cdata[3] & MSM8939_S8_P2_MASK) >> MSM8939_S8_P2_SHIFT;
-		p2[9] = (cdata[4] & MSM8939_S9_P2_MASK_0_4) >> MSM8939_S9_P2_SHIFT_0_4;
-		p2[9] |= ((cdata[5] & MSM8939_S9_P2_MASK_5) >> MSM8939_S9_P2_SHIFT_5) << 5;
 		for (i = 0; i < priv->num_sensors; i++)
 			p2[i] = (base1 + p2[i]) << 2;
 		fallthrough;
@@ -331,7 +327,6 @@ static int calibrate_8939(struct tsens_priv *priv)
 		p1[6] = (cdata[2] & MSM8939_S6_P1_MASK) >> MSM8939_S6_P1_SHIFT;
 		p1[7] = (cdata[3] & MSM8939_S7_P1_MASK) >> MSM8939_S7_P1_SHIFT;
 		p1[8] = (cdata[3] & MSM8939_S8_P1_MASK) >> MSM8939_S8_P1_SHIFT;
-		p1[9] = (cdata[4] & MSM8939_S9_P1_MASK) >> MSM8939_S9_P1_SHIFT;
 		for (i = 0; i < priv->num_sensors; i++)
 			p1[i] = ((base0) + p1[i]) << 2;
 		break;
@@ -544,7 +539,7 @@ static int __init init_8939(struct tsens_priv *priv) {
 	priv->sensor[6].slope = 2833;
 	priv->sensor[7].slope = 2838;
 	priv->sensor[8].slope = 2840;
-	priv->sensor[9].slope = 2852;
+	/* priv->sensor[9].slope = 2852; */
 
 	return init_common(priv);
 }
@@ -617,9 +612,9 @@ static const struct tsens_ops ops_8939 = {
 };
 
 struct tsens_plat_data data_8939 = {
-	.num_sensors	= 10,
+	.num_sensors	= 9,
 	.ops		= &ops_8939,
-	.hw_ids		= (unsigned int []){ 0, 1, 2, 3, 5, 6, 7, 8, 9, 10 },
+	.hw_ids		= (unsigned int []){ 0, 1, 2, 3, 5, 6, 7, 8, 9, /* 10 */ },
 
 	.feat		= &tsens_v0_1_feat,
 	.fields	= tsens_v0_1_regfields,