From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Amit Kucheria <amit.kucheria@linaro.org>
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
swboyd@chromium.org, sivaa@codeaurora.org,
Andy Gross <agross@kernel.org>,
Amit Kucheria <amit.kucheria@verdurent.com>,
linux-pm@vger.kernel.org
Subject: Re: [PATCH v4 4/7] drivers: thermal: tsens: Add critical interrupt support
Date: Mon, 3 Feb 2020 10:14:13 -0800 [thread overview]
Message-ID: <20200203181413.GF3948@builder> (raw)
In-Reply-To: <932e07a83fed192678b8f718bbae37d0dc83590d.1580390127.git.amit.kucheria@linaro.org>
On Thu 30 Jan 05:27 PST 2020, Amit Kucheria wrote:
> TSENS IP v2.x adds critical threshold interrupt support for each sensor
> in addition to the upper/lower threshold interrupt. Add support in the
> driver.
>
> While the critical interrupts themselves aren't currently used by Linux,
> the HW line is also used by the TSENS watchdog. So this patch acts as
> infrastructure to enable watchdog functionality for the TSENS IP.
>
> Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
> ---
Please do provide a changelog when respinning your patches.
> drivers/thermal/qcom/tsens-common.c | 120 ++++++++++++++++++++++++++--
> drivers/thermal/qcom/tsens-v2.c | 8 +-
> drivers/thermal/qcom/tsens.c | 24 +++++-
> drivers/thermal/qcom/tsens.h | 71 ++++++++++++++++
> 4 files changed, 212 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c
[..]
> +irqreturn_t tsens_critical_irq_thread(int irq, void *data)
> +{
> + struct tsens_priv *priv = data;
> + struct tsens_irq_data d;
> + unsigned long flags;
> + int temp, ret, i;
> +
> + for (i = 0; i < priv->num_sensors; i++) {
> + const struct tsens_sensor *s = &priv->sensor[i];
> + u32 hw_id = s->hw_id;
> +
> + if (IS_ERR(s->tzd))
> + continue;
> + if (!tsens_threshold_violated(priv, hw_id, &d))
> + continue;
> + ret = get_temp_tsens_valid(s, &temp);
> + if (ret) {
> + dev_err(priv->dev, "[%u] %s: error reading sensor\n", hw_id, __func__);
> + continue;
> + }
> +
> + spin_lock_irqsave(&priv->crit_lock, flags);
> +
I see that I failed to follow up on the discussion on the previous
revision. The handler is called from a single thread, so you don't need
a lock to protect the irq handler from itself.
Regards,
Bjorn
next prev parent reply other threads:[~2020-02-03 18:14 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-30 13:27 [PATCH v4 0/7] thermal: tsens: Handle critical interrupts Amit Kucheria
2020-01-30 13:27 ` [PATCH v4 1/7] drivers: thermal: tsens: Pass around struct tsens_sensor as a constant Amit Kucheria
2020-01-30 13:27 ` [PATCH v4 2/7] drivers: thermal: tsens: use simpler variables Amit Kucheria
2020-01-30 13:27 ` [PATCH v4 3/7] drivers: thermal: tsens: Release device in success path Amit Kucheria
2020-02-03 18:05 ` Bjorn Andersson
2020-01-30 13:27 ` [PATCH v4 4/7] drivers: thermal: tsens: Add critical interrupt support Amit Kucheria
2020-02-03 18:14 ` Bjorn Andersson [this message]
2020-02-18 18:08 ` Amit Kucheria
2020-01-30 13:27 ` [PATCH v4 5/7] drivers: thermal: tsens: Add watchdog support Amit Kucheria
2020-02-03 18:42 ` Bjorn Andersson
2020-02-18 18:08 ` Amit Kucheria
2020-01-30 13:27 ` [PATCH v4 6/7] drivers: thermal: tsens: kernel-doc fixup Amit Kucheria
2020-02-03 18:43 ` Bjorn Andersson
2020-01-30 13:27 ` [PATCH v4 7/7] drivers: thermal: tsens: Remove unnecessary irq flag Amit Kucheria
2020-02-03 18:44 ` Bjorn Andersson
2020-02-17 15:25 ` [PATCH v4 0/7] thermal: tsens: Handle critical interrupts Daniel Lezcano
2020-02-18 5:36 ` Amit Kucheria
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