From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Mukesh Kumar Savaliya <mukesh.savaliya@oss.qualcomm.com>,
viken.dadhaniya@oss.qualcomm.com, andi.shyti@kernel.org,
robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
vkoul@kernel.org, Frank.Li@kernel.org, andersson@kernel.org,
konradybcio@kernel.org, dmitry.baryshkov@oss.qualcomm.com,
linmq006@gmail.com, quic_jseerapu@quicinc.com,
zhengxingda@iscas.ac.cn, kees@kernel.org, agross@kernel.org,
linux-arm-msm@vger.kernel.org, linux-i2c@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
dmaengine@vger.kernel.org
Cc: krzysztof.kozlowski@oss.qualcomm.com,
bartosz.golaszewski@oss.qualcomm.com,
bjorn.andersson@oss.qualcomm.com
Subject: Re: [PATCH v8 2/4] dmaengine: qcom: gpi: Add lock/unlock TREs for multi-owner I2C transfers
Date: Wed, 15 Jul 2026 14:22:27 +0200 [thread overview]
Message-ID: <c9ea2930-d12a-4445-a2ef-3907597ccd86@oss.qualcomm.com> (raw)
In-Reply-To: <20260708051023.2872304-3-mukesh.savaliya@oss.qualcomm.com>
On 7/8/26 7:10 AM, Mukesh Kumar Savaliya wrote:
> Some platforms use a QUP-based I2C controller in a configuration where the
> controller is shared with another system processor (described in DT using
> qcom,qup-multi-owner). In such setups, GPI hardware lock/unlock TREs can be
> used to serialize access to the controller.
>
> Add support to emit lock and unlock TREs around I2C transfers and increase
> the maximum TRE count to account for the additional elements.
>
> Also simplify the client interface by replacing multiple boolean fields
> (shared flag and message position tracking) with a single lock_action
> selector (acquire/release/none), as the GPI driver only needs to know
> whether to emit lock/unlock TREs for a given transfer.
>
> Signed-off-by: Mukesh Kumar Savaliya <mukesh.savaliya@oss.qualcomm.com>
> ---
Acked-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
next prev parent reply other threads:[~2026-07-15 12:22 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-08 5:10 [PATCH v8 0/4] Enable multi-owner I2C support for QCOM GENI controllers Mukesh Kumar Savaliya
2026-07-08 5:10 ` [PATCH v8 1/4] dt-bindings: i2c: qcom,i2c-geni: Document multi-owner controller support Mukesh Kumar Savaliya
2026-07-16 3:14 ` Bjorn Andersson
2026-07-16 12:41 ` Mukesh Savaliya
2026-07-08 5:10 ` [PATCH v8 2/4] dmaengine: qcom: gpi: Add lock/unlock TREs for multi-owner I2C transfers Mukesh Kumar Savaliya
2026-07-15 12:22 ` Konrad Dybcio [this message]
2026-07-15 15:33 ` Vinod Koul
2026-07-16 12:09 ` Bartosz Golaszewski
2026-07-16 12:35 ` Mukesh Savaliya
2026-07-08 5:10 ` [PATCH v8 3/4] soc: qcom: geni-se: Keep pinctrl active for multi-owner controllers Mukesh Kumar Savaliya
2026-07-08 5:10 ` [PATCH v8 4/4] i2c: qcom-geni: Support multi-owner controllers in GPI mode Mukesh Kumar Savaliya
2026-07-15 12:24 ` Konrad Dybcio
2026-07-16 12:47 ` Mukesh Savaliya
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