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Date: Tue, 16 Aug 2022 14:48:56 +0200
From: Robert Marko <robimarko@...il.com>
To: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: agross@...nel.org, bjorn.andersson@...aro.org,
konrad.dybcio@...ainline.org, amitk@...nel.org,
thara.gopinath@...il.com, rafael@...nel.org, rui.zhang@...el.com,
robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 2/5] drivers: thermal: tsens: Add support for combined interrupt
On Wed, 20 Jul 2022 at 12:28, Daniel Lezcano <daniel.lezcano@...aro.org> wrote:
>
>
> Hi,
>
> On 14/07/2022 12:14, 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 <robimarko@...il.com>
>
> Bjorn, are these changes ok for you ?
It would be great for these to get merged, I have been using them
for couple of months now.
Regards,
Robert
>
> > ---
> > 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 7963ee33bf75..5c7f9ec6ab1c 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(void *_sensor, int low, int high)
> > {
> > struct tsens_sensor *s = _sensor;
> > @@ -1083,13 +1104,18 @@ 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 1471a2c00f15..4614177944d6 100644
> > --- a/drivers/thermal/qcom/tsens.h
> > +++ b/drivers/thermal/qcom/tsens.h
> > @@ -495,6 +495,7 @@ 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?
> > @@ -504,6 +505,7 @@ 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;
>
>
> --
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