[PATCH v4 6/6] thermal: qcom: tsens-v0_1: Add MSM8909 data

[Stephan Gerhold <stephan.gerhold@kernkonzept.com>]

The MSM8909 SoC has 5 thermal sensors in a TSENS v0.1 block. Like
MDM9607 it uses a non-standard default slope value of 3000 [1] and needs
per-sensor "correction factors" to workaround issues with the factory
calibration [2].

[1]: https://git.codelinaro.org/clo/la/kernel/msm-3.18/-/blob/LA.UM.7.7.c26-09100-8x09.0/arch/arm/boot/dts/qcom/msm8909.dtsi#L476
[2]: https://git.codelinaro.org/clo/la/kernel/msm-3.18/-/commit/6df022c6d0c2c1b4a5a6c2124dba4d57910c0911

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
---
 drivers/thermal/qcom/tsens-v0_1.c | 36 +++++++++++++++++++++++++++++++++++-
 drivers/thermal/qcom/tsens.c      |  3 +++
 drivers/thermal/qcom/tsens.h      |  2 +-
 3 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/drivers/thermal/qcom/tsens-v0_1.c b/drivers/thermal/qcom/tsens-v0_1.c
index e69889dd524a..f97d313f0536 100644
--- a/drivers/thermal/qcom/tsens-v0_1.c
+++ b/drivers/thermal/qcom/tsens-v0_1.c
@@ -207,6 +207,27 @@ static int calibrate_8974(struct tsens_priv *priv)
 	return 0;
 }
 
+static int __init init_8909(struct tsens_priv *priv)
+{
+	int i;
+
+	for (i = 0; i < priv->num_sensors; ++i)
+		priv->sensor[i].slope = 3000;
+
+	priv->sensor[0].p1_calib_offset = 0;
+	priv->sensor[0].p2_calib_offset = 0;
+	priv->sensor[1].p1_calib_offset = -10;
+	priv->sensor[1].p2_calib_offset = -6;
+	priv->sensor[2].p1_calib_offset = 0;
+	priv->sensor[2].p2_calib_offset = 0;
+	priv->sensor[3].p1_calib_offset = -9;
+	priv->sensor[3].p2_calib_offset = -9;
+	priv->sensor[4].p1_calib_offset = -8;
+	priv->sensor[4].p2_calib_offset = -10;
+
+	return init_common(priv);
+}
+
 static int __init init_8939(struct tsens_priv *priv) {
 	priv->sensor[0].slope = 2911;
 	priv->sensor[1].slope = 2789;
@@ -243,7 +264,7 @@ static int __init init_9607(struct tsens_priv *priv)
 	return init_common(priv);
 }
 
-/* v0.1: 8916, 8939, 8974, 9607 */
+/* v0.1: 8909, 8916, 8939, 8974, 9607 */
 
 static struct tsens_features tsens_v0_1_feat = {
 	.ver_major	= VER_0_1,
@@ -292,6 +313,19 @@ static const struct reg_field tsens_v0_1_regfields[MAX_REGFIELDS] = {
 	[TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0),
 };
 
+static const struct tsens_ops ops_8909 = {
+	.init		= init_8909,
+	.calibrate	= tsens_calibrate_common,
+	.get_temp	= get_temp_common,
+};
+
+struct tsens_plat_data data_8909 = {
+	.num_sensors	= 5,
+	.ops		= &ops_8909,
+	.feat		= &tsens_v0_1_feat,
+	.fields	= tsens_v0_1_regfields,
+};
+
 static const struct tsens_ops ops_8916 = {
 	.init		= init_common,
 	.calibrate	= calibrate_8916,
diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index 065d0f9728a5..1d7c149038e0 100644
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -1109,6 +1109,9 @@ static const struct of_device_id tsens_table[] = {
 	}, {
 		.compatible = "qcom,mdm9607-tsens",
 		.data = &data_9607,
+	}, {
+		.compatible = "qcom,msm8909-tsens",
+		.data = &data_8909,
 	}, {
 		.compatible = "qcom,msm8916-tsens",
 		.data = &data_8916,
diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
index 880be6be5c3f..c88287dede96 100644
--- a/drivers/thermal/qcom/tsens.h
+++ b/drivers/thermal/qcom/tsens.h
@@ -639,7 +639,7 @@ int get_temp_common(const struct tsens_sensor *s, int *temp);
 extern struct tsens_plat_data data_8960;
 
 /* TSENS v0.1 targets */
-extern struct tsens_plat_data data_8916, data_8939, data_8974, data_9607;
+extern struct tsens_plat_data data_8909, data_8916, data_8939, data_8974, data_9607;
 
 /* TSENS v1 targets */
 extern struct tsens_plat_data data_tsens_v1, data_8976, data_8956;

-- 
2.30.2