From: Vinod Koul <vkoul@kernel.org>
To: Paul Cercueil <paul@crapouillou.net>
Cc: Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Ralf Baechle <ralf@linux-mips.org>,
Paul Burton <paul.burton@mips.com>,
James Hogan <jhogan@kernel.org>,
Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>,
Mathieu Malaterre <malat@debian.org>,
Daniel Silsby <dansilsby@gmail.com>,
dmaengine@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mips@linux-mips.org
Subject: [04/14] dmaengine: dma-jz4780: Add support for the JZ4770 SoC
Date: Mon, 9 Jul 2018 22:40:32 +0530 [thread overview]
Message-ID: <20180709171032.GJ22377@vkoul-mobl> (raw)
On 03-07-18, 14:32, Paul Cercueil wrote:
> +static inline void jz4780_dma_chan_disable(struct jz4780_dma_dev *jzdma,
> + unsigned int chn)
> +{
> + if (jzdma->version == ID_JZ4770)
> + jz4780_dma_ctrl_writel(jzdma, JZ_DMA_REG_DCKEC, BIT(chn));
> +}
this sounds as hardware behaviour, so why not describe as a property in
DT?
> +
> static struct jz4780_dma_desc *jz4780_dma_desc_alloc(
> struct jz4780_dma_chan *jzchan, unsigned int count,
> enum dma_transaction_type type)
> @@ -228,8 +246,15 @@ static void jz4780_dma_desc_free(struct virt_dma_desc *vdesc)
> kfree(desc);
> }
>
> -static uint32_t jz4780_dma_transfer_size(unsigned long val, uint32_t *shift)
> +static const unsigned int jz4780_dma_ord_max[] = {
> + [ID_JZ4770] = 6,
> + [ID_JZ4780] = 7,
> +};
So this gives the transfer length supported?
next reply other threads:[~2018-07-09 17:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-09 17:10 Vinod Koul [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-07-10 15:41 [04/14] dmaengine: dma-jz4780: Add support for the JZ4770 SoC Paul Cercueil
2018-07-03 12:32 Paul Cercueil
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