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From: Amit Kucheria <amit.kucheria@linaro.org>
To: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	daniel.lezcano@linaro.org, bjorn.andersson@linaro.org,
	swboyd@chromium.org, sivaa@codeaurora.org,
	Andy Gross <agross@kernel.org>
Cc: Amit Kucheria <amit.kucheria@verdurent.com>, linux-pm@vger.kernel.org
Subject: [PATCH v7 2/8] drivers: thermal: tsens: Pass around struct tsens_sensor as a constant
Date: Thu, 12 Mar 2020 18:06:59 +0530	[thread overview]
Message-ID: <740f9254484c08d65869df578628eb523c0049ff.1584015867.git.amit.kucheria@linaro.org> (raw)
In-Reply-To: <cover.1584015867.git.amit.kucheria@linaro.org>

All the sensor data is initialised at init time. Lock it down by passing
it to functions as a constant.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
---
 drivers/thermal/qcom/tsens-8960.c   |  2 +-
 drivers/thermal/qcom/tsens-common.c | 15 ++++++++-------
 drivers/thermal/qcom/tsens.h        |  6 +++---
 3 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c
index a383a57cfbbcb..2a28a5af209ec 100644
--- a/drivers/thermal/qcom/tsens-8960.c
+++ b/drivers/thermal/qcom/tsens-8960.c
@@ -245,7 +245,7 @@ static inline int code_to_mdegC(u32 adc_code, const struct tsens_sensor *s)
 	return adc_code * slope + offset;
 }
 
-static int get_temp_8960(struct tsens_sensor *s, int *temp)
+static int get_temp_8960(const struct tsens_sensor *s, int *temp)
 {
 	int ret;
 	u32 code, trdy;
diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c
index c8d57ee0a5bb2..45e68f999bf61 100644
--- a/drivers/thermal/qcom/tsens-common.c
+++ b/drivers/thermal/qcom/tsens-common.c
@@ -128,7 +128,7 @@ static inline int code_to_degc(u32 adc_code, const struct tsens_sensor *s)
  * Return: Temperature in milliCelsius on success, a negative errno will
  * be returned in error cases
  */
-static int tsens_hw_to_mC(struct tsens_sensor *s, int field)
+static int tsens_hw_to_mC(const struct tsens_sensor *s, int field)
 {
 	struct tsens_priv *priv = s->priv;
 	u32 resolution;
@@ -160,7 +160,7 @@ static int tsens_hw_to_mC(struct tsens_sensor *s, int field)
  *
  * Return: ADC code or temperature in deciCelsius.
  */
-static int tsens_mC_to_hw(struct tsens_sensor *s, int temp)
+static int tsens_mC_to_hw(const struct tsens_sensor *s, int temp)
 {
 	struct tsens_priv *priv = s->priv;
 
@@ -275,7 +275,8 @@ static int tsens_threshold_violated(struct tsens_priv *priv, u32 hw_id,
 }
 
 static int tsens_read_irq_state(struct tsens_priv *priv, u32 hw_id,
-				struct tsens_sensor *s, struct tsens_irq_data *d)
+				const struct tsens_sensor *s,
+				struct tsens_irq_data *d)
 {
 	int ret;
 
@@ -346,10 +347,10 @@ irqreturn_t tsens_irq_thread(int irq, void *data)
 
 	for (i = 0; i < priv->num_sensors; i++) {
 		bool trigger = false;
-		struct tsens_sensor *s = &priv->sensor[i];
+		const struct tsens_sensor *s = &priv->sensor[i];
 		u32 hw_id = s->hw_id;
 
-		if (IS_ERR(priv->sensor[i].tzd))
+		if (IS_ERR(s->tzd))
 			continue;
 		if (!tsens_threshold_violated(priv, hw_id, &d))
 			continue;
@@ -457,7 +458,7 @@ void tsens_disable_irq(struct tsens_priv *priv)
 	regmap_field_write(priv->rf[INT_EN], 0);
 }
 
-int get_temp_tsens_valid(struct tsens_sensor *s, int *temp)
+int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp)
 {
 	struct tsens_priv *priv = s->priv;
 	int hw_id = s->hw_id;
@@ -486,7 +487,7 @@ int get_temp_tsens_valid(struct tsens_sensor *s, int *temp)
 	return 0;
 }
 
-int get_temp_common(struct tsens_sensor *s, int *temp)
+int get_temp_common(const struct tsens_sensor *s, int *temp)
 {
 	struct tsens_priv *priv = s->priv;
 	int hw_id = s->hw_id;
diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
index be364bf1d5a63..70dc34c805377 100644
--- a/drivers/thermal/qcom/tsens.h
+++ b/drivers/thermal/qcom/tsens.h
@@ -67,7 +67,7 @@ struct tsens_ops {
 	/* mandatory callbacks */
 	int (*init)(struct tsens_priv *priv);
 	int (*calibrate)(struct tsens_priv *priv);
-	int (*get_temp)(struct tsens_sensor *s, int *temp);
+	int (*get_temp)(const struct tsens_sensor *s, int *temp);
 	/* optional callbacks */
 	int (*enable)(struct tsens_priv *priv, int i);
 	void (*disable)(struct tsens_priv *priv);
@@ -494,8 +494,8 @@ struct tsens_priv {
 char *qfprom_read(struct device *dev, const char *cname);
 void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mode);
 int init_common(struct tsens_priv *priv);
-int get_temp_tsens_valid(struct tsens_sensor *s, int *temp);
-int get_temp_common(struct tsens_sensor *s, int *temp);
+int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp);
+int get_temp_common(const struct tsens_sensor *s, int *temp);
 int tsens_enable_irq(struct tsens_priv *priv);
 void tsens_disable_irq(struct tsens_priv *priv);
 int tsens_set_trips(void *_sensor, int low, int high);
-- 
2.20.1


  parent reply	other threads:[~2020-03-12 12:37 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-12 12:36 [PATCH v7 0/8] thermal: tsens: Handle critical interrupts Amit Kucheria
2020-03-12 12:36 ` [PATCH v7 1/8] drivers: thermal: tsens: De-constify struct tsens_features Amit Kucheria
2020-03-12 12:36 ` Amit Kucheria [this message]
2020-03-12 12:37 ` [PATCH v7 3/8] drivers: thermal: tsens: use simpler variables Amit Kucheria
2020-03-12 12:37 ` [PATCH v7 4/8] drivers: thermal: tsens: Release device in success path Amit Kucheria
2020-03-12 12:37 ` [PATCH v7 5/8] drivers: thermal: tsens: Add critical interrupt support Amit Kucheria
2020-03-12 12:37 ` [PATCH v7 6/8] drivers: thermal: tsens: Add watchdog support Amit Kucheria
2020-03-12 12:37 ` [PATCH v7 7/8] drivers: thermal: tsens: kernel-doc fixup Amit Kucheria
2020-03-12 12:37 ` [PATCH v7 8/8] drivers: thermal: tsens: Remove unnecessary irq flag Amit Kucheria
2020-03-12 18:12 ` [PATCH v7 0/8] thermal: tsens: Handle critical interrupts Daniel Lezcano

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