linux-kernel - Re: [PATCH v5] dmaengine: qcom: Add ADM driver

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Message-ID: <20201118155038.GU50232@vkoul-mobl>
Date:   Wed, 18 Nov 2020 21:20:38 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Jonathan McDowell <noodles@...th.li>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Thomas Pedersen <twp@...eaurora.org>,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        dmaengine@...r.kernel.org
Subject: Re: [PATCH v5] dmaengine: qcom: Add ADM driver

On 14-11-20, 14:02, Jonathan McDowell wrote:
> Add the DMA engine driver for the QCOM Application Data Mover (ADM) DMA
> controller found in the MSM8x60 and IPQ/APQ8064 platforms.
> 
> The ADM supports both memory to memory transactions and memory
> to/from peripheral device transactions.  The controller also provides
> flow control capabilities for transactions to/from peripheral devices.
> 
> The initial release of this driver supports slave transfers to/from
> peripherals and also incorporates CRCI (client rate control interface)
> flow control.
> 
> The hardware only supports a 32 bit physical address, so specifying
> !PHYS_ADDR_T_64BIT gives maximum COMPILE_TEST coverage without having to
> spend effort on kludging things in the code that will never actually be
> needed on real hardware.

Applied, thanks

My build scripts emit the warnings below, please fix them up with the
follow up patch. You can get this with W=1

drivers/dma/qcom/qcom_adm.c:180: warning: Function parameter or member 'chan' not described in 'adm_free_chan'
drivers/dma/qcom/qcom_adm.c:190: warning: Function parameter or member 'burst' not described in 'adm_get_blksize'
drivers/dma/qcom/qcom_adm.c:466: warning: Function parameter or member 'chan' not described in 'adm_terminate_all'
drivers/dma/qcom/qcom_adm.c:466: warning: Excess function parameter 'achan' description in 'adm_terminate_all'
drivers/dma/qcom/qcom_adm.c:503: warning: Function parameter or member 'achan' not described in 'adm_start_dma'

-- 
~Vinod