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[88.207.98.197]) by smtp.googlemail.com with ESMTPSA id gr19-20020a170906e2d300b0072b592ee073sm535313ejb.147.2022.07.14.03.14.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Jul 2022 03:14:56 -0700 (PDT) From: Robert Marko To: agross@kernel.org, bjorn.andersson@linaro.org, konrad.dybcio@somainline.org, amitk@kernel.org, thara.gopinath@gmail.com, rafael@kernel.org, daniel.lezcano@linaro.org, rui.zhang@intel.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Robert Marko Subject: [PATCH v6 2/5] drivers: thermal: tsens: Add support for combined interrupt Date: Thu, 14 Jul 2022 12:14:48 +0200 Message-Id: <20220714101451.198211-2-robimarko@gmail.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220714101451.198211-1-robimarko@gmail.com> References: <20220714101451.198211-1-robimarko@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org 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 --- 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;