From: Paul Cercueil <paul@crapouillou.net>
To: Vinod <vkoul@kernel.org>
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: Tue, 10 Jul 2018 17:41:26 +0200 [thread overview]
Message-ID: <1531237286.17118.2@crapouillou.net> (raw)
Le lun. 9 juil. 2018 à 19:10, Vinod <vkoul@kernel.org> a écrit :
> 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?
See my response to your message on patch 1.
>> +
>> 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?
Yes, exactly. The maximum transfer size is (1 << ord).
> --
> ~Vinod
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WARNING: multiple messages have this Message-ID (diff)
From: Paul Cercueil <paul@crapouillou.net>
To: Vinod <vkoul@kernel.org>
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: Re: [PATCH 04/14] dmaengine: dma-jz4780: Add support for the JZ4770 SoC
Date: Tue, 10 Jul 2018 17:41:26 +0200 [thread overview]
Message-ID: <1531237286.17118.2@crapouillou.net> (raw)
In-Reply-To: <20180709171032.GJ22377@vkoul-mobl>
Le lun. 9 juil. 2018 à 19:10, Vinod <vkoul@kernel.org> a écrit :
> 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?
See my response to your message on patch 1.
>> +
>> 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?
Yes, exactly. The maximum transfer size is (1 << ord).
> --
> ~Vinod
next reply other threads:[~2018-07-10 15:41 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-10 15:41 Paul Cercueil [this message]
2018-07-10 15:41 ` [PATCH 04/14] dmaengine: dma-jz4780: Add support for the JZ4770 SoC Paul Cercueil
-- strict thread matches above, loose matches on Subject: below --
2018-07-18 5:27 [05/14] dmaengine: dma-jz4780: Add support for the JZ4740 SoC Vinod Koul
2018-07-18 5:27 ` [PATCH 05/14] " Vinod
2018-07-17 17:40 [05/14] " Rob Herring
2018-07-17 17:40 ` [PATCH 05/14] " Rob Herring
2018-07-17 15:34 [05/14] " Vinod Koul
2018-07-17 15:34 ` [PATCH 05/14] " Vinod
2018-07-17 11:00 [05/14] " Paul Cercueil
2018-07-17 11:00 ` [PATCH 05/14] " Paul Cercueil
2018-07-16 21:33 [05/14] " Rob Herring
2018-07-16 21:33 ` [PATCH 05/14] " Rob Herring
2018-07-16 21:28 [02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers Rob Herring
2018-07-16 21:28 ` [PATCH 02/14] " Rob Herring
2018-07-11 23:27 [02/14] " Paul Burton
2018-07-11 23:27 ` [PATCH 02/14] " Paul Burton
2018-07-11 23:13 [06/14] dmaengine: dma-jz4780: Add support for the JZ4725B SoC Paul Cercueil
2018-07-11 23:13 ` [PATCH 06/14] " Paul Cercueil
2018-07-11 23:13 [02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers Paul Cercueil
2018-07-11 23:13 ` [PATCH 02/14] " Paul Cercueil
2018-07-11 12:18 [06/14] dmaengine: dma-jz4780: Add support for the JZ4725B SoC Vinod Koul
2018-07-11 12:18 ` [PATCH 06/14] " Vinod
2018-07-11 12:16 [02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers Vinod Koul
2018-07-11 12:16 ` [PATCH 02/14] " Vinod
2018-07-11 12:14 [01/14] dmaengine: dma-jz4780: Avoid hardcoding number of channels Vinod Koul
2018-07-11 12:14 ` [PATCH 01/14] " Vinod
2018-07-10 15:45 [06/14] dmaengine: dma-jz4780: Add support for the JZ4725B SoC Paul Cercueil
2018-07-10 15:45 ` [PATCH 06/14] " Paul Cercueil
2018-07-10 15:36 [02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers Paul Cercueil
2018-07-10 15:36 ` [PATCH 02/14] " Paul Cercueil
2018-07-09 17:14 [06/14] dmaengine: dma-jz4780: Add support for the JZ4725B SoC Vinod Koul
2018-07-09 17:14 ` [PATCH 06/14] " Vinod
2018-07-09 17:12 [05/14] dmaengine: dma-jz4780: Add support for the JZ4740 SoC Vinod Koul
2018-07-09 17:12 ` [PATCH 05/14] " Vinod
2018-07-09 17:10 [04/14] dmaengine: dma-jz4780: Add support for the JZ4770 SoC Vinod Koul
2018-07-09 17:10 ` [PATCH 04/14] " Vinod
2018-07-09 17:03 [02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers Vinod Koul
2018-07-09 17:03 ` [PATCH 02/14] " Vinod
2018-07-07 11:01 [01/14] dmaengine: dma-jz4780: Avoid hardcoding number of channels Paul Cercueil
2018-07-07 11:01 ` [PATCH 01/14] " Paul Cercueil
2018-07-07 7:34 [01/14] " PrasannaKumar Muralidharan
2018-07-07 7:34 ` [PATCH 01/14] " PrasannaKumar Muralidharan
2018-07-07 7:27 [02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers PrasannaKumar Muralidharan
2018-07-07 7:27 ` [PATCH 02/14] " PrasannaKumar Muralidharan
2018-07-05 21:45 [02/14] " Paul Cercueil
2018-07-05 21:45 ` [PATCH 02/14] " Paul Cercueil
2018-07-05 18:26 [01/14] dmaengine: dma-jz4780: Avoid hardcoding number of channels Paul Cercueil
2018-07-05 18:26 ` [PATCH 01/14] " Paul Cercueil
2018-07-05 18:23 [02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers Paul Cercueil
2018-07-05 18:23 ` [PATCH 02/14] " Paul Cercueil
2018-07-04 17:00 [07/14] dmaengine: dma-jz4780: Enable Fast DMA to the AIC PrasannaKumar Muralidharan
2018-07-04 17:00 ` [PATCH 07/14] " PrasannaKumar Muralidharan
2018-07-04 16:55 [06/14] dmaengine: dma-jz4780: Add support for the JZ4725B SoC PrasannaKumar Muralidharan
2018-07-04 16:55 ` [PATCH 06/14] " PrasannaKumar Muralidharan
2018-07-04 16:52 [05/14] dmaengine: dma-jz4780: Add support for the JZ4740 SoC PrasannaKumar Muralidharan
2018-07-04 16:52 ` [PATCH 05/14] " PrasannaKumar Muralidharan
2018-07-04 16:40 [03/14] dmaengine: dma-jz4780: Use 4-word descriptors PrasannaKumar Muralidharan
2018-07-04 16:40 ` [PATCH 03/14] " PrasannaKumar Muralidharan
2018-07-04 16:35 [02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers PrasannaKumar Muralidharan
2018-07-04 16:35 ` [PATCH 02/14] " PrasannaKumar Muralidharan
2018-07-04 16:28 [01/14] dmaengine: dma-jz4780: Avoid hardcoding number of channels PrasannaKumar Muralidharan
2018-07-04 16:28 ` [PATCH 01/14] " PrasannaKumar Muralidharan
2018-07-03 16:53 [02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers Paul Burton
2018-07-03 16:53 ` [PATCH 02/14] " Paul Burton
2018-07-03 12:32 [14/14] MIPS: JZ4770: DTS: Add DMA nodes Paul Cercueil
2018-07-03 12:32 ` [PATCH 14/14] " Paul Cercueil
2018-07-03 12:32 [13/14] MIPS: JZ4780: DTS: Update DMA node to match driver changes Paul Cercueil
2018-07-03 12:32 ` [PATCH 13/14] " Paul Cercueil
2018-07-03 12:32 [12/14] dmaengine: dma-jz4780: Use dma_set_residue() Paul Cercueil
2018-07-03 12:32 ` [PATCH 12/14] " Paul Cercueil
2018-07-03 12:32 [11/14] dmaengine: dma-jz4780: Further residue status fix Paul Cercueil
2018-07-03 12:32 ` [PATCH 11/14] " Paul Cercueil
2018-07-03 12:32 [10/14] dmaengine: dma-jz4780: Set DTCn register explicitly Paul Cercueil
2018-07-03 12:32 ` [PATCH 10/14] " Paul Cercueil
2018-07-03 12:32 [09/14] dmaengine: dma-jz4780: Simplify jz4780_dma_desc_residue() Paul Cercueil
2018-07-03 12:32 ` [PATCH 09/14] " Paul Cercueil
2018-07-03 12:32 [08/14] dmaengine: dma-jz4780: Add missing residue DTC mask Paul Cercueil
2018-07-03 12:32 ` [PATCH 08/14] " Paul Cercueil
2018-07-03 12:32 [07/14] dmaengine: dma-jz4780: Enable Fast DMA to the AIC Paul Cercueil
2018-07-03 12:32 ` [PATCH 07/14] " Paul Cercueil
2018-07-03 12:32 [06/14] dmaengine: dma-jz4780: Add support for the JZ4725B SoC Paul Cercueil
2018-07-03 12:32 ` [PATCH 06/14] " Paul Cercueil
2018-07-03 12:32 [05/14] dmaengine: dma-jz4780: Add support for the JZ4740 SoC Paul Cercueil
2018-07-03 12:32 ` [PATCH 05/14] " Paul Cercueil
2018-07-03 12:32 [04/14] dmaengine: dma-jz4780: Add support for the JZ4770 SoC Paul Cercueil
2018-07-03 12:32 ` [PATCH 04/14] " Paul Cercueil
2018-07-03 12:32 [03/14] dmaengine: dma-jz4780: Use 4-word descriptors Paul Cercueil
2018-07-03 12:32 ` [PATCH 03/14] " Paul Cercueil
2018-07-03 12:32 [02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers Paul Cercueil
2018-07-03 12:32 ` [PATCH 02/14] " Paul Cercueil
2018-07-03 12:32 [PATCH 00/14] dma-jz4780 improvements Paul Cercueil
2018-07-03 12:32 ` [01/14] dmaengine: dma-jz4780: Avoid hardcoding number of channels Paul Cercueil
2018-07-03 12:32 ` [PATCH 01/14] " Paul Cercueil
2018-07-09 16:59 ` [01/14] " Vinod Koul
2018-07-09 16:59 ` [PATCH 01/14] " Vinod
2018-07-10 15:29 ` Paul Cercueil
2018-07-03 19:32 ` [PATCH 00/14] dma-jz4780 improvements Mathieu Malaterre
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