linux-kernel - [PATCH 2/7] thermal/drivers/qcom: Add new feat for soc without rpm

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Message-ID: <1693250307-8910-3-git-send-email-quic_srichara@quicinc.com>
Date:   Tue, 29 Aug 2023 00:48:22 +0530
From:   Sricharan Ramabadhran <quic_srichara@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <srinivas.kandagatla@...aro.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <thara.gopinath@...il.com>,
        <rafael@...nel.org>, <daniel.lezcano@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>,
        <quic_srichara@...cinc.com>
Subject: [PATCH 2/7] thermal/drivers/qcom: Add new feat for soc without rpm

Some of the tsens IP like the one in IPQ5018 does not have a
RPM in the soc. Hence the early init to enable tsens would not
be done. So add a flag for that in feat and skip enable checks.

Signed-off-by: Sricharan Ramabadhran <quic_srichara@...cinc.com>
---
 drivers/thermal/qcom/tsens.c | 2 +-
 drivers/thermal/qcom/tsens.h | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index 98c356acfe98..f39495b61952 100644
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -974,7 +974,7 @@ int __init init_common(struct tsens_priv *priv)
 	ret = regmap_field_read(priv->rf[TSENS_EN], &enabled);
 	if (ret)
 		goto err_put_device;
-	if (!enabled) {
+	if (!enabled && !(priv->feat->no_early_init)) {
 		dev_err(dev, "%s: device not enabled\n", __func__);
 		ret = -ENODEV;
 		goto err_put_device;
diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
index 2805de1c6827..fb73e3dd0de9 100644
--- a/drivers/thermal/qcom/tsens.h
+++ b/drivers/thermal/qcom/tsens.h
@@ -505,6 +505,8 @@ enum regfield_ids {
  * @srot_split: does the IP neatly splits the register space into SROT and TM,
  *              with SROT only being available to secure boot firmware?
  * @has_watchdog: does this IP support watchdog functionality?
+ * @no_early_init: does this IP reside in a soc that does not have rpm to
+ *                 do pre-init.
  * @max_sensors: maximum sensors supported by this version of the IP
  * @trip_min_temp: minimum trip temperature supported by this version of the IP
  * @trip_max_temp: maximum trip temperature supported by this version of the IP
@@ -516,6 +518,7 @@ struct tsens_features {
 	unsigned int adc:1;
 	unsigned int srot_split:1;
 	unsigned int has_watchdog:1;
+	unsigned int no_early_init:1;
 	unsigned int max_sensors;
 	int trip_min_temp;
 	int trip_max_temp;
-- 
2.34.1