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[73.228.159.35]) by smtp.gmail.com with ESMTPSA id lc8-20020a056638958800b00484e9c7014bsm116126jab.153.2024.04.19.08.18.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Apr 2024 08:18:05 -0700 (PDT) From: Alex Elder To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: mka@chromium.org, andersson@kernel.org, quic_cpratapa@quicinc.com, quic_avuyyuru@quicinc.com, quic_jponduru@quicinc.com, quic_subashab@quicinc.com, elder@kernel.org, netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v2 2/8] net: ipa: only enable the SUSPEND IPA interrupt when needed Date: Fri, 19 Apr 2024 10:17:54 -0500 Message-Id: <20240419151800.2168903-3-elder@linaro.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240419151800.2168903-1-elder@linaro.org> References: <20240419151800.2168903-1-elder@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Only enable the SUSPEND IPA interrupt type when at least one endpoint has that interrupt enabled. Signed-off-by: Alex Elder --- drivers/net/ipa/ipa_interrupt.c | 8 ++++++++ drivers/net/ipa/ipa_power.c | 11 +---------- 2 files changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/net/ipa/ipa_interrupt.c b/drivers/net/ipa/ipa_interrup= t.c index 18036e9cd161f..2ef640f9197c7 100644 --- a/drivers/net/ipa/ipa_interrupt.c +++ b/drivers/net/ipa/ipa_interrupt.c @@ -196,6 +196,7 @@ static void ipa_interrupt_suspend_control(struct ipa_in= terrupt *interrupt, u32 mask =3D BIT(endpoint_id % 32); u32 unit =3D endpoint_id / 32; const struct reg *reg; + unsigned long weight; u32 offset; u32 val; =20 @@ -205,6 +206,10 @@ static void ipa_interrupt_suspend_control(struct ipa_i= nterrupt *interrupt, if (ipa->version =3D=3D IPA_VERSION_3_0) return; =20 + weight =3D bitmap_weight(interrupt->suspend_enabled, ipa->endpoint_count); + if (weight =3D=3D 1 && !enable) + ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND); + reg =3D ipa_reg(ipa, IRQ_SUSPEND_EN); offset =3D reg_n_offset(reg, unit); val =3D ioread32(ipa->reg_virt + offset); @@ -216,6 +221,9 @@ static void ipa_interrupt_suspend_control(struct ipa_in= terrupt *interrupt, __change_bit(endpoint_id, interrupt->suspend_enabled); =20 iowrite32(val, ipa->reg_virt + offset); + + if (!weight && enable) + ipa_interrupt_enable(ipa, IPA_IRQ_TX_SUSPEND); } =20 /* Enable TX_SUSPEND for an endpoint */ diff --git a/drivers/net/ipa/ipa_power.c b/drivers/net/ipa/ipa_power.c index 3a7049923c381..1a413061472d8 100644 --- a/drivers/net/ipa/ipa_power.c +++ b/drivers/net/ipa/ipa_power.c @@ -234,21 +234,12 @@ void ipa_power_retention(struct ipa *ipa, bool enable) =20 int ipa_power_setup(struct ipa *ipa) { - int ret; - - ipa_interrupt_enable(ipa, IPA_IRQ_TX_SUSPEND); - - ret =3D device_init_wakeup(ipa->dev, true); - if (ret) - ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND); - - return ret; + return device_init_wakeup(ipa->dev, true); } =20 void ipa_power_teardown(struct ipa *ipa) { (void)device_init_wakeup(ipa->dev, false); - ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND); } =20 /* Initialize IPA power management */ --=20 2.40.1