2022-08-18 22:07:56

by Robert Marko

[permalink] [raw]
Subject: [PATCH v7 2/5] drivers: thermal: tsens: Add support for combined interrupt

Despite using tsens v2.3 IP, IPQ8074 and IPQ6018 only have one IRQ for
signaling both up/low and critical trips.

Signed-off-by: Robert Marko <[email protected]>
---
Changes in v7:
* Rebase to apply on next-20220818

Changes in v6:
* Check critical IRQ handler return, simplify up/low return
---
drivers/thermal/qcom/tsens-8960.c | 1 +
drivers/thermal/qcom/tsens-v0_1.c | 1 +
drivers/thermal/qcom/tsens-v1.c | 1 +
drivers/thermal/qcom/tsens-v2.c | 1 +
drivers/thermal/qcom/tsens.c | 38 ++++++++++++++++++++++++++-----
drivers/thermal/qcom/tsens.h | 2 ++
6 files changed, 38 insertions(+), 6 deletions(-)

diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c
index 67c1748cdf73..ee584e5b07e5 100644
--- a/drivers/thermal/qcom/tsens-8960.c
+++ b/drivers/thermal/qcom/tsens-8960.c
@@ -269,6 +269,7 @@ static const struct tsens_ops ops_8960 = {
static struct tsens_features tsens_8960_feat = {
.ver_major = VER_0,
.crit_int = 0,
+ .combo_int = 0,
.adc = 1,
.srot_split = 0,
.max_sensors = 11,
diff --git a/drivers/thermal/qcom/tsens-v0_1.c b/drivers/thermal/qcom/tsens-v0_1.c
index f136cb350238..6effb822bf3c 100644
--- a/drivers/thermal/qcom/tsens-v0_1.c
+++ b/drivers/thermal/qcom/tsens-v0_1.c
@@ -539,6 +539,7 @@ static int calibrate_9607(struct tsens_priv *priv)
static struct tsens_features tsens_v0_1_feat = {
.ver_major = VER_0_1,
.crit_int = 0,
+ .combo_int = 0,
.adc = 1,
.srot_split = 1,
.max_sensors = 11,
diff --git a/drivers/thermal/qcom/tsens-v1.c b/drivers/thermal/qcom/tsens-v1.c
index 573e261ccca7..a4f561a6e582 100644
--- a/drivers/thermal/qcom/tsens-v1.c
+++ b/drivers/thermal/qcom/tsens-v1.c
@@ -302,6 +302,7 @@ static int calibrate_8976(struct tsens_priv *priv)
static struct tsens_features tsens_v1_feat = {
.ver_major = VER_1_X,
.crit_int = 0,
+ .combo_int = 0,
.adc = 1,
.srot_split = 1,
.max_sensors = 11,
diff --git a/drivers/thermal/qcom/tsens-v2.c b/drivers/thermal/qcom/tsens-v2.c
index b293ed32174b..129cdb247381 100644
--- a/drivers/thermal/qcom/tsens-v2.c
+++ b/drivers/thermal/qcom/tsens-v2.c
@@ -31,6 +31,7 @@
static struct tsens_features tsens_v2_feat = {
.ver_major = VER_2_X,
.crit_int = 1,
+ .combo_int = 0,
.adc = 0,
.srot_split = 1,
.max_sensors = 16,
diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index b1b10005fb28..816769af8813 100644
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -532,6 +532,27 @@ static irqreturn_t tsens_irq_thread(int irq, void *data)
return IRQ_HANDLED;
}

+/**
+ * tsens_combined_irq_thread - Threaded interrupt handler for combined interrupts
+ * @irq: irq number
+ * @data: tsens controller private data
+ *
+ * Handle the combined interrupt as if it were 2 separate interrupts, so call the
+ * critical handler first and then the up/low one.
+ *
+ * Return: IRQ_HANDLED
+ */
+static irqreturn_t tsens_combined_irq_thread(int irq, void *data)
+{
+ irqreturn_t ret;
+
+ ret = tsens_critical_irq_thread(irq, data);
+ if (ret != IRQ_HANDLED)
+ return ret;
+
+ return tsens_irq_thread(irq, data);
+}
+
static int tsens_set_trips(struct thermal_zone_device *tz, int low, int high)
{
struct tsens_sensor *s = tz->devdata;
@@ -1071,13 +1092,18 @@ static int tsens_register(struct tsens_priv *priv)
tsens_mC_to_hw(priv->sensor, 0));
}

- ret = tsens_register_irq(priv, "uplow", tsens_irq_thread);
- if (ret < 0)
- return ret;
+ if (priv->feat->combo_int) {
+ ret = tsens_register_irq(priv, "combined",
+ tsens_combined_irq_thread);
+ } else {
+ ret = tsens_register_irq(priv, "uplow", tsens_irq_thread);
+ if (ret < 0)
+ return ret;

- if (priv->feat->crit_int)
- ret = tsens_register_irq(priv, "critical",
- tsens_critical_irq_thread);
+ if (priv->feat->crit_int)
+ ret = tsens_register_irq(priv, "critical",
+ tsens_critical_irq_thread);
+ }

return ret;
}
diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
index ba05c8233356..1678c5e9e60b 100644
--- a/drivers/thermal/qcom/tsens.h
+++ b/drivers/thermal/qcom/tsens.h
@@ -493,6 +493,7 @@ enum regfield_ids {
* struct tsens_features - Features supported by the IP
* @ver_major: Major number of IP version
* @crit_int: does the IP support critical interrupts?
+ * @combo_int: does the IP use one IRQ for up, low and critical thresholds?
* @adc: do the sensors only output adc code (instead of temperature)?
* @srot_split: does the IP neatly splits the register space into SROT and TM,
* with SROT only being available to secure boot firmware?
@@ -502,6 +503,7 @@ enum regfield_ids {
struct tsens_features {
unsigned int ver_major;
unsigned int crit_int:1;
+ unsigned int combo_int:1;
unsigned int adc:1;
unsigned int srot_split:1;
unsigned int has_watchdog:1;
--
2.37.2


2022-08-18 23:02:58

by Daniel Lezcano

[permalink] [raw]
Subject: Re: [PATCH v7 2/5] drivers: thermal: tsens: Add support for combined interrupt

On 19/08/2022 00:02, Robert Marko wrote:
> Despite using tsens v2.3 IP, IPQ8074 and IPQ6018 only have one IRQ for
> signaling both up/low and critical trips.
>
> Signed-off-by: Robert Marko <[email protected]>

I'll pick the patches 1-4 as soon as Bjorn gives its blessing for this one


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2022-09-27 07:39:11

by Robert Marko

[permalink] [raw]
Subject: Re: [PATCH v7 2/5] drivers: thermal: tsens: Add support for combined interrupt

On Fri, 19 Aug 2022 at 00:49, Daniel Lezcano <[email protected]> wrote:
>
> On 19/08/2022 00:02, Robert Marko wrote:
> > Despite using tsens v2.3 IP, IPQ8074 and IPQ6018 only have one IRQ for
> > signaling both up/low and critical trips.
> >
> > Signed-off-by: Robert Marko <[email protected]>
>
> I'll pick the patches 1-4 as soon as Bjorn gives its blessing for this one

Sounds good to me,

Bjorn can you please take a look?

Regards,
Robert
>
>
> --
> <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
>
> Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
> <http://twitter.com/#!/linaroorg> Twitter |
> <http://www.linaro.org/linaro-blog/> Blog

2022-09-27 08:56:55

by Robert Marko

[permalink] [raw]
Subject: Re: [PATCH v7 2/5] drivers: thermal: tsens: Add support for combined interrupt

On Fri, 19 Aug 2022 at 00:49, Daniel Lezcano <[email protected]> wrote:
>
> On 19/08/2022 00:02, Robert Marko wrote:
> > Despite using tsens v2.3 IP, IPQ8074 and IPQ6018 only have one IRQ for
> > signaling both up/low and critical trips.
> >
> > Signed-off-by: Robert Marko <[email protected]>
>
> I'll pick the patches 1-4 as soon as Bjorn gives its blessing for this one
Resending with Bjorns new email as Linaro one bounces.

Sounds good to me,

Bjorn can you please take a look?

Regards,
Robert
>
>
> --
> <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
>
> Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
> <http://twitter.com/#!/linaroorg> Twitter |
> <http://www.linaro.org/linaro-blog/> Blog

2022-10-17 19:11:26

by Bjorn Andersson

[permalink] [raw]
Subject: Re: [PATCH v7 2/5] drivers: thermal: tsens: Add support for combined interrupt

On Fri, Aug 19, 2022 at 12:02:42AM +0200, Robert Marko wrote:
> Despite using tsens v2.3 IP, IPQ8074 and IPQ6018 only have one IRQ for
> signaling both up/low and critical trips.
>
> Signed-off-by: Robert Marko <[email protected]>
> ---
> Changes in v7:
> * Rebase to apply on next-20220818
>
> Changes in v6:
> * Check critical IRQ handler return, simplify up/low return
> ---
> drivers/thermal/qcom/tsens-8960.c | 1 +
> drivers/thermal/qcom/tsens-v0_1.c | 1 +
> drivers/thermal/qcom/tsens-v1.c | 1 +
> drivers/thermal/qcom/tsens-v2.c | 1 +
> drivers/thermal/qcom/tsens.c | 38 ++++++++++++++++++++++++++-----
> drivers/thermal/qcom/tsens.h | 2 ++
> 6 files changed, 38 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c
> index 67c1748cdf73..ee584e5b07e5 100644
> --- a/drivers/thermal/qcom/tsens-8960.c
> +++ b/drivers/thermal/qcom/tsens-8960.c
> @@ -269,6 +269,7 @@ static const struct tsens_ops ops_8960 = {
> static struct tsens_features tsens_8960_feat = {
> .ver_major = VER_0,
> .crit_int = 0,
> + .combo_int = 0,
> .adc = 1,
> .srot_split = 0,
> .max_sensors = 11,
> diff --git a/drivers/thermal/qcom/tsens-v0_1.c b/drivers/thermal/qcom/tsens-v0_1.c
> index f136cb350238..6effb822bf3c 100644
> --- a/drivers/thermal/qcom/tsens-v0_1.c
> +++ b/drivers/thermal/qcom/tsens-v0_1.c
> @@ -539,6 +539,7 @@ static int calibrate_9607(struct tsens_priv *priv)
> static struct tsens_features tsens_v0_1_feat = {
> .ver_major = VER_0_1,
> .crit_int = 0,
> + .combo_int = 0,
> .adc = 1,
> .srot_split = 1,
> .max_sensors = 11,
> diff --git a/drivers/thermal/qcom/tsens-v1.c b/drivers/thermal/qcom/tsens-v1.c
> index 573e261ccca7..a4f561a6e582 100644
> --- a/drivers/thermal/qcom/tsens-v1.c
> +++ b/drivers/thermal/qcom/tsens-v1.c
> @@ -302,6 +302,7 @@ static int calibrate_8976(struct tsens_priv *priv)
> static struct tsens_features tsens_v1_feat = {
> .ver_major = VER_1_X,
> .crit_int = 0,
> + .combo_int = 0,
> .adc = 1,
> .srot_split = 1,
> .max_sensors = 11,
> diff --git a/drivers/thermal/qcom/tsens-v2.c b/drivers/thermal/qcom/tsens-v2.c
> index b293ed32174b..129cdb247381 100644
> --- a/drivers/thermal/qcom/tsens-v2.c
> +++ b/drivers/thermal/qcom/tsens-v2.c
> @@ -31,6 +31,7 @@
> static struct tsens_features tsens_v2_feat = {
> .ver_major = VER_2_X,
> .crit_int = 1,
> + .combo_int = 0,
> .adc = 0,
> .srot_split = 1,
> .max_sensors = 16,
> diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
> index b1b10005fb28..816769af8813 100644
> --- a/drivers/thermal/qcom/tsens.c
> +++ b/drivers/thermal/qcom/tsens.c
> @@ -532,6 +532,27 @@ static irqreturn_t tsens_irq_thread(int irq, void *data)
> return IRQ_HANDLED;
> }
>
> +/**
> + * tsens_combined_irq_thread - Threaded interrupt handler for combined interrupts

This should have () after the function name. Perhaps Daniel could add
that as he picks the patch?

Reviewed-by: Bjorn Andersson <[email protected]>

Regards,
Bjorn

> + * @irq: irq number
> + * @data: tsens controller private data
> + *
> + * Handle the combined interrupt as if it were 2 separate interrupts, so call the
> + * critical handler first and then the up/low one.
> + *
> + * Return: IRQ_HANDLED
> + */
> +static irqreturn_t tsens_combined_irq_thread(int irq, void *data)
> +{
> + irqreturn_t ret;
> +
> + ret = tsens_critical_irq_thread(irq, data);
> + if (ret != IRQ_HANDLED)
> + return ret;
> +
> + return tsens_irq_thread(irq, data);
> +}
> +
> static int tsens_set_trips(struct thermal_zone_device *tz, int low, int high)
> {
> struct tsens_sensor *s = tz->devdata;
> @@ -1071,13 +1092,18 @@ static int tsens_register(struct tsens_priv *priv)
> tsens_mC_to_hw(priv->sensor, 0));
> }
>
> - ret = tsens_register_irq(priv, "uplow", tsens_irq_thread);
> - if (ret < 0)
> - return ret;
> + if (priv->feat->combo_int) {
> + ret = tsens_register_irq(priv, "combined",
> + tsens_combined_irq_thread);
> + } else {
> + ret = tsens_register_irq(priv, "uplow", tsens_irq_thread);
> + if (ret < 0)
> + return ret;
>
> - if (priv->feat->crit_int)
> - ret = tsens_register_irq(priv, "critical",
> - tsens_critical_irq_thread);
> + if (priv->feat->crit_int)
> + ret = tsens_register_irq(priv, "critical",
> + tsens_critical_irq_thread);
> + }
>
> return ret;
> }
> diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
> index ba05c8233356..1678c5e9e60b 100644
> --- a/drivers/thermal/qcom/tsens.h
> +++ b/drivers/thermal/qcom/tsens.h
> @@ -493,6 +493,7 @@ enum regfield_ids {
> * struct tsens_features - Features supported by the IP
> * @ver_major: Major number of IP version
> * @crit_int: does the IP support critical interrupts?
> + * @combo_int: does the IP use one IRQ for up, low and critical thresholds?
> * @adc: do the sensors only output adc code (instead of temperature)?
> * @srot_split: does the IP neatly splits the register space into SROT and TM,
> * with SROT only being available to secure boot firmware?
> @@ -502,6 +503,7 @@ enum regfield_ids {
> struct tsens_features {
> unsigned int ver_major;
> unsigned int crit_int:1;
> + unsigned int combo_int:1;
> unsigned int adc:1;
> unsigned int srot_split:1;
> unsigned int has_watchdog:1;
> --
> 2.37.2
>

2022-10-21 17:40:25

by Daniel Lezcano

[permalink] [raw]
Subject: Re: [PATCH v7 2/5] drivers: thermal: tsens: Add support for combined interrupt

On 17/10/2022 21:01, Bjorn Andersson wrote:

[ ... ]

>
> This should have () after the function name. Perhaps Daniel could add
> that as he picks the patch?

Applied and parenthesis added

> Reviewed-by: Bjorn Andersson <[email protected]>
>
> Regards,
> Bjorn
[ ... ]

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