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k/Phd5aoZXNwsCRqaD2OwFZXr81zSXwE2UdPmIfTYTjeVsOAI7GZ7akCsRPK64ni0XfoXue2 XUSrUUTRimTkuMHrTYaHY3544a+GduQQLLA+avseLmjvKHxsU4zna0p0Yb4czwoJj+wSkVGQ NMDbxcY26CMPK204jhRm9RG687qq6691hbiuAtWABeAsl1AS+mdS7aP/4uOM4kFCvXYgIHxP /BoVz9CZTMEVAZVzbRKyYCLUf1wLhcHzugTiONz9fWMBLLskKvq7m1tlr61mNgY9nVwwClMU uE7i1H9r/2/UXLd+pY82zcXhFrfmKuCDmOkB5xPsOMVQJH8I0/lbqfLAqfsxSb/X1VKaP243 jzi+DzD9cvj2K6eD5j5kcKJJQactXqfJvF1Eb+OnxlB1BCLE8D1rNkPO5O742Mq3MgDmq19l +abzEL6QDAAxn9md8KwrA3RtucNh87cHlDXfUBKa7SRvBjTczDg+HEPNk2u3hrz1j3l2rliQ y1UfYx7Vk/TrdwUIJgKS8QAr8Lw9WuvY2hSqL9vEjx8VAkPWNWPwrQ== Message-ID: <21e120fc-dac6-5e9a-745a-7ffc32cbac0b@gmail.com> Date: Fri, 3 Jul 2020 16:54:55 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <1593673564-4425-4-git-send-email-EastL.Lee@mediatek.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200703_105459_718013_58FAB7EB X-CRM114-Status: GOOD ( 19.55 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, cc.hwang@mediatek.com, wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, vkoul@kernel.org, robh+dt@kernel.org, linux-mediatek@lists.infradead.org, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 02/07/2020 09:06, EastL Lee wrote: > This patch add dma mask for capability. > > Signed-off-by: EastL Lee Reviewed-by: Matthias Brugger > --- > drivers/dma/mediatek/mtk-cqdma.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/drivers/dma/mediatek/mtk-cqdma.c b/drivers/dma/mediatek/mtk-cqdma.c > index 905bbcb..1610632 100644 > --- a/drivers/dma/mediatek/mtk-cqdma.c > +++ b/drivers/dma/mediatek/mtk-cqdma.c > @@ -117,6 +117,7 @@ struct mtk_cqdma_vchan { > * @clk: The clock that device internal is using > * @dma_requests: The number of VCs the device supports to > * @dma_channels: The number of PCs the device supports to > + * @dma_mask: A mask for DMA capability > * @vc: The pointer to all available VCs > * @pc: The pointer to all the underlying PCs > */ > @@ -126,6 +127,7 @@ struct mtk_cqdma_device { > > u32 dma_requests; > u32 dma_channels; > + u32 dma_mask; > struct mtk_cqdma_vchan *vc; > struct mtk_cqdma_pchan **pc; > }; > @@ -607,6 +609,21 @@ static int mtk_cqdma_probe(struct platform_device *pdev) > cqdma->dma_channels = MTK_CQDMA_NR_PCHANS; > } > > + if (pdev->dev.of_node) > + err = of_property_read_u32(pdev->dev.of_node, > + "dma-channel-mask", > + &cqdma->dma_mask); > + if (err) { > + dev_warn(&pdev->dev, > + "Using 0 as missing dma-channel-mask property\n"); > + cqdma->dma_mask = 0; > + } > + > + if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(cqdma->dma_mask))) { > + dev_warn(&pdev->dev, "DMA set mask failed\n"); > + return -EINVAL; > + } > + > cqdma->pc = devm_kcalloc(&pdev->dev, cqdma->dma_channels, > sizeof(*cqdma->pc), GFP_KERNEL); > if (!cqdma->pc) > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel