[PATCH V3 3/4] thermal/drivers/tsens: Add support for IPQ5018 tsens

[Sricharan R <srichara@win-platform-upstream01.qualcomm.com>]

From: Sricharan Ramabadhran <quic_srichara@quicinc.com>

IPQ5018 has tsens IP V1.0, 4 sensors and 1 interrupt.
The soc does not have a RPM, hence tsens has to be reset and
enabled in the driver init. Adding the driver support for same.

Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
---
 [v3] Fixed Dmitry's comments for error checks in init_ipq5018

 drivers/thermal/qcom/tsens-v1.c | 60 +++++++++++++++++++++++++++++++++
 drivers/thermal/qcom/tsens.c    |  3 ++
 drivers/thermal/qcom/tsens.h    |  2 +-
 3 files changed, 64 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/qcom/tsens-v1.c b/drivers/thermal/qcom/tsens-v1.c
index dc1c4ae2d8b0..acee2064f83e 100644
--- a/drivers/thermal/qcom/tsens-v1.c
+++ b/drivers/thermal/qcom/tsens-v1.c
@@ -79,6 +79,18 @@ static struct tsens_features tsens_v1_feat = {
 	.trip_max_temp	= 120000,
 };
 
+static struct tsens_features tsens_v1_ipq5018_feat = {
+	.ver_major	= VER_1_X,
+	.crit_int	= 0,
+	.combo_int	= 0,
+	.adc		= 1,
+	.srot_split	= 1,
+	.max_sensors	= 11,
+	.trip_min_temp	= -40000,
+	.trip_max_temp	= 120000,
+	.ignore_enable	= 1,
+};
+
 static const struct reg_field tsens_v1_regfields[MAX_REGFIELDS] = {
 	/* ----- SROT ------ */
 	/* VERSION */
@@ -150,6 +162,41 @@ static int __init init_8956(struct tsens_priv *priv) {
 	return init_common(priv);
 }
 
+static int init_ipq5018(struct tsens_priv *priv)
+{
+	int ret;
+	u32 mask;
+
+	ret = init_common(priv);
+	if (ret < 0) {
+		dev_err(priv->dev, "Init common failed %d\n", ret);
+		return ret;
+	}
+
+	ret = regmap_field_write(priv->rf[TSENS_SW_RST], 1);
+	if (ret) {
+		dev_err(priv->dev, "Reset failed\n");
+		return ret;
+	}
+
+	mask = GENMASK(priv->num_sensors, 0);
+	ret = regmap_field_update_bits(priv->rf[SENSOR_EN], mask, mask);
+	if (ret) {
+		dev_err(priv->dev, "Sensor Enable failed\n");
+		return ret;
+	}
+
+	ret = regmap_field_write(priv->rf[TSENS_EN], 1);
+	if (ret) {
+		dev_err(priv->dev, "Enable failed\n");
+		return ret;
+	}
+
+	ret = regmap_field_write(priv->rf[TSENS_SW_RST], 0);
+
+	return ret;
+}
+
 static const struct tsens_ops ops_generic_v1 = {
 	.init		= init_common,
 	.calibrate	= calibrate_v1,
@@ -187,3 +234,16 @@ struct tsens_plat_data data_8976 = {
 	.feat		= &tsens_v1_feat,
 	.fields		= tsens_v1_regfields,
 };
+
+const struct tsens_ops ops_ipq5018 = {
+	.init		= init_ipq5018,
+	.calibrate	= tsens_calibrate_common,
+	.get_temp	= get_temp_tsens_valid,
+};
+
+struct tsens_plat_data data_ipq5018 = {
+	.num_sensors	= 5,
+	.ops		= &ops_ipq5018,
+	.feat		= &tsens_v1_ipq5018_feat,
+	.fields		= tsens_v1_regfields,
+};
diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index 0a43ccf02ec4..c792b9dc6676 100644
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -1101,6 +1101,9 @@ static SIMPLE_DEV_PM_OPS(tsens_pm_ops, tsens_suspend, tsens_resume);
 
 static const struct of_device_id tsens_table[] = {
 	{
+		.compatible = "qcom,ipq5018-tsens",
+		.data = &data_ipq5018,
+	}, {
 		.compatible = "qcom,ipq8064-tsens",
 		.data = &data_8960,
 	}, {
diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
index e254cd2df904..b6594b546d11 100644
--- a/drivers/thermal/qcom/tsens.h
+++ b/drivers/thermal/qcom/tsens.h
@@ -645,7 +645,7 @@ extern struct tsens_plat_data data_8960;
 extern struct tsens_plat_data data_8226, 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;
+extern struct tsens_plat_data data_tsens_v1, data_8976, data_8956, data_ipq5018;
 
 /* TSENS v2 targets */
 extern struct tsens_plat_data data_8996, data_ipq8074, data_tsens_v2;
-- 
2.34.1