[PATCH 1/3] k3dma: Upgrade k3dma drever to support hisi_asp_dma hardware

[PATCH 1/3] k3dma: Upgrade k3dma drever to support hisi_asp_dma hardware

[h00249924]

From: Youlin Wang <wwx575822@notesmail.huawei.com>

There is an new "hisi-pcm-asp-dma-1.0" device added in
"arch/arm64/boot/dts/hisilicon/hi3660.dtsi".
So we have to add a matching id in the driver file:
"{ .compatible = "hisilicon,hisi-pcm-asp-dma-1.0", }"

And also hisi-pcm-asp dma device needs no setting to the clock.
So we skip this by "if" sentence on id string matching:
"if (strcasecmp((of_id->compatible), (k3_pdma_dt_ids[0].compatible)) == 0)"

After above this driver will support both k3 and hisi_asp dma hardware.

Signed-off-by: Youlin Wang <wwx575822@notesmail.huawei.com>
Signed-off-by: Tanglei Han <hantanglei@huawei.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vinod Koul <vkoul@kernel.org>
---
 drivers/dma/k3dma.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c
index fdec2b6..10eecc2 100644
--- a/drivers/dma/k3dma.c
+++ b/drivers/dma/k3dma.c
@@ -792,6 +792,7 @@ static int k3_dma_transfer_resume(struct dma_chan *chan)
 
 static const struct of_device_id k3_pdma_dt_ids[] = {
 	{ .compatible = "hisilicon,k3-dma-1.0", },
+	{ .compatible = "hisilicon,hisi-pcm-asp-dma-1.0", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, k3_pdma_dt_ids);
@@ -835,10 +836,12 @@ static int k3_dma_probe(struct platform_device *op)
 				"dma-requests", &d->dma_requests);
 	}
 
-	d->clk = devm_clk_get(&op->dev, NULL);
-	if (IS_ERR(d->clk)) {
-		dev_err(&op->dev, "no dma clk\n");
-		return PTR_ERR(d->clk);
+	if (strcasecmp((of_id->compatible), (k3_pdma_dt_ids[0].compatible)) == 0) {
+		d->clk = devm_clk_get(&op->dev, NULL);
+		if (IS_ERR(d->clk)) {
+			dev_err(&op->dev, "no dma clk\n");
+			return PTR_ERR(d->clk);
+		}
 	}
 
 	irq = platform_get_irq(op, 0);
-- 
1.9.1


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[PATCH 2/3] dmaengine: Extend the k3dma driver binding

[h00249924]

From: Youlin Wang <wwx575822@notesmail.huawei.com>

Extend the k3dma driver binding to support hisi-asp hardware variants.

Signed-off-by: Youlin Wang <wwx575822@notesmail.huawei.com>
Signed-off-by: Tanglei Han <hantanglei@huawei.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
---
 Documentation/devicetree/bindings/dma/k3dma.txt | 33 ++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/dma/k3dma.txt b/Documentation/devicetree/bindings/dma/k3dma.txt
index 4945aea..cd21b82 100644
--- a/Documentation/devicetree/bindings/dma/k3dma.txt
+++ b/Documentation/devicetree/bindings/dma/k3dma.txt
@@ -3,7 +3,9 @@
 See dma.txt first
 
 Required properties:
-- compatible: Should be "hisilicon,k3-dma-1.0"
+- compatible: Must be one of
+-		"hisilicon,k3-dma-1.0"
+-		"hisilicon,hisi-pcm-asp-dma-1.0"
 - reg: Should contain DMA registers location and length.
 - interrupts: Should contain one interrupt shared by all channel
 - #dma-cells: see dma.txt, should be 1, para number
@@ -43,3 +45,32 @@ For example, i2c0 read channel request line is 18, while write channel use 19
 			dma-names = "rx", "tx";
 		};
 
+
+
+
+Controller:
+		asp_dmac: asp_dmac@E804B000 {
+			compatible = "hisilicon,hisi-pcm-asp-dma-1.0";
+			reg = <0x0 0xe804b000 0x0 0x1000>;
+			#dma-cells = <1>;
+			dma-channels = <16>;
+			dma-requests = <32>;
+			dma-min-chan = <0>;
+			dma-used-chans = <0xFFFE>;
+			dma-share;
+			interrupts = <0 216 4>;
+			interrupt-names = "asp_dma_irq";
+			status = "ok";
+		};
+
+Client:
+		i2s2: hisi_i2s {
+			compatible = "hisilicon,hisi-i2s";
+			reg = <0x0 0xe804f800 0x0 0x400>,
+				<0x0 0xe804e000 0x0 0x400>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&i2s2_pmx_func &i2s2_cfg_func>;
+			dmas = <&asp_dmac 18 &asp_dmac 19>;
+			dma-names = "rx", "tx";
+			#sound-dai-cells = <0>;
+		};
-- 
1.9.1


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Re: [PATCH 2/3] dmaengine: Extend the k3dma driver binding

[John Stultz]

On Thu, Dec 27, 2018 at 10:39 PM h00249924 <hutenghui@huawei.com> wrote:
>
> From: Youlin Wang <wwx575822@notesmail.huawei.com>
>
> Extend the k3dma driver binding to support hisi-asp hardware variants.
>
> Signed-off-by: Youlin Wang <wwx575822@notesmail.huawei.com>
> Signed-off-by: Tanglei Han <hantanglei@huawei.com>
> Cc: Vinod Koul <vkoul@kernel.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> ---
>  Documentation/devicetree/bindings/dma/k3dma.txt | 33 ++++++++++++++++++++++++-
>  1 file changed, 32 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/dma/k3dma.txt b/Documentation/devicetree/bindings/dma/k3dma.txt
> index 4945aea..cd21b82 100644
> --- a/Documentation/devicetree/bindings/dma/k3dma.txt
> +++ b/Documentation/devicetree/bindings/dma/k3dma.txt
> @@ -3,7 +3,9 @@
>  See dma.txt first
>
>  Required properties:
> -- compatible: Should be "hisilicon,k3-dma-1.0"
> +- compatible: Must be one of
> +-              "hisilicon,k3-dma-1.0"
> +-              "hisilicon,hisi-pcm-asp-dma-1.0"
>  - reg: Should contain DMA registers location and length.
>  - interrupts: Should contain one interrupt shared by all channel
>  - #dma-cells: see dma.txt, should be 1, para number
> @@ -43,3 +45,32 @@ For example, i2c0 read channel request line is 18, while write channel use 19
>                         dma-names = "rx", "tx";
>                 };
>
> +
> +
> +
> +Controller:
> +               asp_dmac: asp_dmac@E804B000 {
> +                       compatible = "hisilicon,hisi-pcm-asp-dma-1.0";
> +                       reg = <0x0 0xe804b000 0x0 0x1000>;
> +                       #dma-cells = <1>;
> +                       dma-channels = <16>;
> +                       dma-requests = <32>;
> +                       dma-min-chan = <0>;
> +                       dma-used-chans = <0xFFFE>;
> +                       dma-share;

Thanks for sending this out!

So min-chan, used-chans and dma-share aren't in the existing binding
document. So they probably should be removed from this example, or the
binding document needs to be updated first.

thanks
-john

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Re: [PATCH 2/3] dmaengine: Extend the k3dma driver binding

[Rob Herring]

On Fri, Dec 28, 2018 at 02:36:22PM +0800, h00249924 wrote:
> From: Youlin Wang <wwx575822@notesmail.huawei.com>
> 
> Extend the k3dma driver binding to support hisi-asp hardware variants.
> 
> Signed-off-by: Youlin Wang <wwx575822@notesmail.huawei.com>
> Signed-off-by: Tanglei Han <hantanglei@huawei.com>
> Cc: Vinod Koul <vkoul@kernel.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> ---
>  Documentation/devicetree/bindings/dma/k3dma.txt | 33 ++++++++++++++++++++++++-
>  1 file changed, 32 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/dma/k3dma.txt b/Documentation/devicetree/bindings/dma/k3dma.txt
> index 4945aea..cd21b82 100644
> --- a/Documentation/devicetree/bindings/dma/k3dma.txt
> +++ b/Documentation/devicetree/bindings/dma/k3dma.txt
> @@ -3,7 +3,9 @@
>  See dma.txt first
>  
>  Required properties:
> -- compatible: Should be "hisilicon,k3-dma-1.0"
> +- compatible: Must be one of
> +-		"hisilicon,k3-dma-1.0"
> +-		"hisilicon,hisi-pcm-asp-dma-1.0"
>  - reg: Should contain DMA registers location and length.
>  - interrupts: Should contain one interrupt shared by all channel
>  - #dma-cells: see dma.txt, should be 1, para number
> @@ -43,3 +45,32 @@ For example, i2c0 read channel request line is 18, while write channel use 19
>  			dma-names = "rx", "tx";
>  		};
>  
> +
> +
> +
> +Controller:

Why is a new example needed just for a new compatible string?

> +		asp_dmac: asp_dmac@E804B000 {
> +			compatible = "hisilicon,hisi-pcm-asp-dma-1.0";
> +			reg = <0x0 0xe804b000 0x0 0x1000>;
> +			#dma-cells = <1>;
> +			dma-channels = <16>;
> +			dma-requests = <32>;
> +			dma-min-chan = <0>;
> +			dma-used-chans = <0xFFFE>;
> +			dma-share;
> +			interrupts = <0 216 4>;
> +			interrupt-names = "asp_dma_irq";
> +			status = "ok";
> +		};
> +
> +Client:
> +		i2s2: hisi_i2s {
> +			compatible = "hisilicon,hisi-i2s";
> +			reg = <0x0 0xe804f800 0x0 0x400>,
> +				<0x0 0xe804e000 0x0 0x400>;
> +			pinctrl-names = "default";
> +			pinctrl-0 = <&i2s2_pmx_func &i2s2_cfg_func>;
> +			dmas = <&asp_dmac 18 &asp_dmac 19>;
> +			dma-names = "rx", "tx";
> +			#sound-dai-cells = <0>;
> +		};
> -- 
> 1.9.1
> 

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[PATCH 3/3] arm64: dts: hi3660: Add hisi asp dma device

[h00249924]

From: Youlin Wang <wwx575822@notesmail.huawei.com>

Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Youlin Wang <wwx575822@notesmail.huawei.com>
Signed-off-by: Tanglei Han <hantanglei@huawei.com>
Cc: Wei Xu <xuwei5@hisilicon.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
---
 arch/arm64/boot/dts/hisilicon/hi3660.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
index f432b0a..5223e36 100644
--- a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
+++ b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
@@ -1122,5 +1122,19 @@
 				};
 			};
 		};
+
+		asp_dmac: asp_dmac@E804B000 {
+			compatible = "hisilicon,hisi-pcm-asp-dma-1.0";
+			reg = <0x0 0xe804b000 0x0 0x1000>;
+			#dma-cells = <1>;
+			dma-channels = <16>;
+			dma-requests = <32>;
+			dma-min-chan = <0>;
+			dma-used-chans = <0xFFFE>;
+			dma-share;
+			interrupts = <0 216 4>;
+			interrupt-names = "asp_dma_irq";
+			status = "ok";
+		};
 	};
 };
-- 
1.9.1


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Re: [PATCH 3/3] arm64: dts: hi3660: Add hisi asp dma device

[Rob Herring]

On Fri, Dec 28, 2018 at 02:36:23PM +0800, h00249924 wrote:
> From: Youlin Wang <wwx575822@notesmail.huawei.com>
> 
> Signed-off-by: John Stultz <john.stultz@linaro.org>
> Signed-off-by: Youlin Wang <wwx575822@notesmail.huawei.com>
> Signed-off-by: Tanglei Han <hantanglei@huawei.com>
> Cc: Wei Xu <xuwei5@hisilicon.com>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> ---
>  arch/arm64/boot/dts/hisilicon/hi3660.dtsi | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
> index f432b0a..5223e36 100644
> --- a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
> +++ b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
> @@ -1122,5 +1122,19 @@
>  				};
>  			};
>  		};
> +
> +		asp_dmac: asp_dmac@E804B000 {

dma-controller@e804b000

> +			compatible = "hisilicon,hisi-pcm-asp-dma-1.0";
> +			reg = <0x0 0xe804b000 0x0 0x1000>;
> +			#dma-cells = <1>;
> +			dma-channels = <16>;
> +			dma-requests = <32>;
> +			dma-min-chan = <0>;
> +			dma-used-chans = <0xFFFE>;

Use lowercase hex.

But more importantly, as John mentioned, this and other properties 
aren't documented.

> +			dma-share;
> +			interrupts = <0 216 4>;
> +			interrupt-names = "asp_dma_irq";
> +			status = "ok";

Don't need this.

> +		};
>  	};
>  };
> -- 
> 1.9.1
> 

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Re: [PATCH 1/3] k3dma: Upgrade k3dma drever to support hisi_asp_dma hardware

[Vinod Koul]

On 28-12-18, 14:36, h00249924 wrote:
> From: Youlin Wang <wwx575822@notesmail.huawei.com>
> 
> There is an new "hisi-pcm-asp-dma-1.0" device added in
> "arch/arm64/boot/dts/hisilicon/hi3660.dtsi".
> So we have to add a matching id in the driver file:
> "{ .compatible = "hisilicon,hisi-pcm-asp-dma-1.0", }"
> 
> And also hisi-pcm-asp dma device needs no setting to the clock.
> So we skip this by "if" sentence on id string matching:
> "if (strcasecmp((of_id->compatible), (k3_pdma_dt_ids[0].compatible)) == 0)"
> 
> After above this driver will support both k3 and hisi_asp dma hardware.
> 
> Signed-off-by: Youlin Wang <wwx575822@notesmail.huawei.com>
> Signed-off-by: Tanglei Han <hantanglei@huawei.com>
> Cc: Dan Williams <dan.j.williams@intel.com>
> Cc: Vinod Koul <vkoul@kernel.org>
> ---
>  drivers/dma/k3dma.c | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c
> index fdec2b6..10eecc2 100644
> --- a/drivers/dma/k3dma.c
> +++ b/drivers/dma/k3dma.c
> @@ -792,6 +792,7 @@ static int k3_dma_transfer_resume(struct dma_chan *chan)
>  
>  static const struct of_device_id k3_pdma_dt_ids[] = {
>  	{ .compatible = "hisilicon,k3-dma-1.0", },
> +	{ .compatible = "hisilicon,hisi-pcm-asp-dma-1.0", },

The binding doc patch should precede this..

>  	{}
>  };
>  MODULE_DEVICE_TABLE(of, k3_pdma_dt_ids);
> @@ -835,10 +836,12 @@ static int k3_dma_probe(struct platform_device *op)
>  				"dma-requests", &d->dma_requests);
>  	}
>  
> -	d->clk = devm_clk_get(&op->dev, NULL);
> -	if (IS_ERR(d->clk)) {
> -		dev_err(&op->dev, "no dma clk\n");
> -		return PTR_ERR(d->clk);
> +	if (strcasecmp((of_id->compatible), (k3_pdma_dt_ids[0].compatible)) == 0) {
> +		d->clk = devm_clk_get(&op->dev, NULL);

who provides clk in this case? how does this scale if you have another
compatible in future for newer version of controller?


> +		if (IS_ERR(d->clk)) {
> +			dev_err(&op->dev, "no dma clk\n");
> +			return PTR_ERR(d->clk);
> +		}
>  	}
>  
>  	irq = platform_get_irq(op, 0);
> -- 
> 1.9.1

-- 
~Vinod

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Re: [PATCH 1/3] k3dma: Upgrade k3dma drever to support hisi_asp_dma hardware

[John Stultz]

On Fri, Jan 4, 2019 at 9:25 AM Vinod Koul <vkoul@kernel.org> wrote:
>
> On 28-12-18, 14:36, h00249924 wrote:
> > From: Youlin Wang <wwx575822@notesmail.huawei.com>
> >
> > There is an new "hisi-pcm-asp-dma-1.0" device added in
> > "arch/arm64/boot/dts/hisilicon/hi3660.dtsi".
> > So we have to add a matching id in the driver file:
> > "{ .compatible = "hisilicon,hisi-pcm-asp-dma-1.0", }"
> >
> > And also hisi-pcm-asp dma device needs no setting to the clock.
> > So we skip this by "if" sentence on id string matching:
> > "if (strcasecmp((of_id->compatible), (k3_pdma_dt_ids[0].compatible)) == 0)"
> >
> > After above this driver will support both k3 and hisi_asp dma hardware.
> >
> > Signed-off-by: Youlin Wang <wwx575822@notesmail.huawei.com>
> > Signed-off-by: Tanglei Han <hantanglei@huawei.com>
> > Cc: Dan Williams <dan.j.williams@intel.com>
> > Cc: Vinod Koul <vkoul@kernel.org>
> > ---
> >  drivers/dma/k3dma.c | 11 +++++++----
> >  1 file changed, 7 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c
> > index fdec2b6..10eecc2 100644
> > --- a/drivers/dma/k3dma.c
> > +++ b/drivers/dma/k3dma.c
> > @@ -792,6 +792,7 @@ static int k3_dma_transfer_resume(struct dma_chan *chan)
> >
> >  static const struct of_device_id k3_pdma_dt_ids[] = {
> >       { .compatible = "hisilicon,k3-dma-1.0", },
> > +     { .compatible = "hisilicon,hisi-pcm-asp-dma-1.0", },
>
> The binding doc patch should precede this..
>
> >       {}
> >  };
> >  MODULE_DEVICE_TABLE(of, k3_pdma_dt_ids);
> > @@ -835,10 +836,12 @@ static int k3_dma_probe(struct platform_device *op)
> >                               "dma-requests", &d->dma_requests);
> >       }
> >
> > -     d->clk = devm_clk_get(&op->dev, NULL);
> > -     if (IS_ERR(d->clk)) {
> > -             dev_err(&op->dev, "no dma clk\n");
> > -             return PTR_ERR(d->clk);
> > +     if (strcasecmp((of_id->compatible), (k3_pdma_dt_ids[0].compatible)) == 0) {
> > +             d->clk = devm_clk_get(&op->dev, NULL);
>
> who provides clk in this case? how does this scale if you have another
> compatible in future for newer version of controller?

Yea, I've pushed a few times in internal review to use match_data() here.

Tanglei Han: If its ok, I've spent some time integrating these changes
with some other pending k3dma changes. So I'll rework and integrate
some of the review feedback on this and resend it so we can get this
moving a little faster.

I'll leave the i2s feedback to you, so please continue reworking and
resubmitting those, but I'll handle upstreaming the k3dma changes
(keeping you on cc of course).

thanks
-john

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