* [PATCH v6 1/3] DMA: Freescale: revise device tree binding document
2013-07-26 10:27 [PATCH v6 0/3] DMA: Freescale: Add support for 8-channel DMA engine hongbo.zhang
@ 2013-07-26 10:27 ` hongbo.zhang
2013-07-26 10:27 ` [PATCH v6 2/3] DMA: Freescale: Add new 8-channel DMA engine device tree nodes hongbo.zhang
2013-07-26 10:27 ` [PATCH v6 3/3] DMA: Freescale: update driver to support 8-channel DMA engine hongbo.zhang
2 siblings, 0 replies; 6+ messages in thread
From: hongbo.zhang @ 2013-07-26 10:27 UTC (permalink / raw)
To: vinod.koul, djbw, leoli, scottwood, linuxppc-dev
Cc: devicetree, linux-kernel, Hongbo Zhang
From: Hongbo Zhang <hongbo.zhang@freescale.com>
This patch updates the discription of each type of DMA controller and its
channels, it is preparation for adding another new DMA controller binding, it
also fixes some defects of indent for text alignment at the same time.
Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
---
.../devicetree/bindings/powerpc/fsl/dma.txt | 52 +++++++++-----------
1 file changed, 24 insertions(+), 28 deletions(-)
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/dma.txt b/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
index 2a4b4bc..ed703d9 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
+++ b/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
@@ -1,33 +1,31 @@
-* Freescale 83xx DMA Controller
+* Freescale DMA Controllers
-Freescale PowerPC 83xx have on chip general purpose DMA controllers.
+** Freescale Elo DMA Controller
+ This is a little-endian DMA controller, used in Freescale mpc83xx series
+ chips such as mpc8315, mpc8349, mpc8379 etc.
Required properties:
-- compatible : compatible list, contains 2 entries, first is
- "fsl,CHIP-dma", where CHIP is the processor
- (mpc8349, mpc8360, etc.) and the second is
- "fsl,elo-dma"
+- compatible : must include "fsl,elo-dma", and a "fsl,CHIP-dma" is
+ optional, where CHIP is the processor name.
- reg : <registers mapping for DMA general status reg>
-- ranges : Should be defined as specified in 1) to describe the
- DMA controller channels.
+- ranges : describes the mapping between the address space of the
+ DMA channels and the address space of the DMA controller.
- cell-index : controller index. 0 for controller @ 0x8100
- interrupts : <interrupt mapping for DMA IRQ>
- interrupt-parent : optional, if needed for interrupt mapping
-
- DMA channel nodes:
- - compatible : compatible list, contains 2 entries, first is
- "fsl,CHIP-dma-channel", where CHIP is the processor
- (mpc8349, mpc8350, etc.) and the second is
- "fsl,elo-dma-channel". However, see note below.
+ - compatible : must include "fsl,elo-dma-channel", and a
+ "fsl,CHIP-dma-channel" is optional, where CHIP is
+ the processor name, However, see note below.
- reg : <registers mapping for channel>
- cell-index : dma channel index starts at 0.
Optional properties:
- interrupts : <interrupt mapping for DMA channel IRQ>
- (on 83xx this is expected to be identical to
- the interrupts property of the parent node)
+ (on 83xx this is expected to be identical to
+ the interrupts property of the parent node)
- interrupt-parent : optional, if needed for interrupt mapping
Example:
@@ -70,27 +68,25 @@ Example:
};
};
-* Freescale 85xx/86xx DMA Controller
-
-Freescale PowerPC 85xx/86xx have on chip general purpose DMA controllers.
+** Freescale EloPlus DMA Controller
+ This is DMA controller with extended addresses and chaining, mainly used in
+ Freescale mpc85xx/86xx, Pxxx and BSC series chips, such as mpc8540, mpc8641
+ p4080, bsc9131 etc.
Required properties:
-- compatible : compatible list, contains 2 entries, first is
- "fsl,CHIP-dma", where CHIP is the processor
- (mpc8540, mpc8540, etc.) and the second is
- "fsl,eloplus-dma"
+- compatible : must include "fsl,eloplus-dma", and a "fsl,CHIP-dma" is
+ optional, where CHIP is the processor name.
- reg : <registers mapping for DMA general status reg>
- cell-index : controller index. 0 for controller @ 0x21000,
1 for controller @ 0xc000
-- ranges : Should be defined as specified in 1) to describe the
- DMA controller channels.
+- ranges : describes the mapping between the address space of the
+ DMA channels and the address space of the DMA controller
- DMA channel nodes:
- - compatible : compatible list, contains 2 entries, first is
- "fsl,CHIP-dma-channel", where CHIP is the processor
- (mpc8540, mpc8560, etc.) and the second is
- "fsl,eloplus-dma-channel". However, see note below.
+ - compatible : must include "fsl,eloplus-dma-channel", and a
+ "fsl,CHIP-dma-channel" is optional, where CHIP is
+ the processor name, However, see note below.
- cell-index : dma channel index starts at 0.
- reg : <registers mapping for channel>
- interrupts : <interrupt mapping for DMA channel IRQ>
--
1.7.9.5
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v6 2/3] DMA: Freescale: Add new 8-channel DMA engine device tree nodes
2013-07-26 10:27 [PATCH v6 0/3] DMA: Freescale: Add support for 8-channel DMA engine hongbo.zhang
2013-07-26 10:27 ` [PATCH v6 1/3] DMA: Freescale: revise device tree binding document hongbo.zhang
@ 2013-07-26 10:27 ` hongbo.zhang
2013-07-26 22:03 ` Scott Wood
2013-07-26 10:27 ` [PATCH v6 3/3] DMA: Freescale: update driver to support 8-channel DMA engine hongbo.zhang
2 siblings, 1 reply; 6+ messages in thread
From: hongbo.zhang @ 2013-07-26 10:27 UTC (permalink / raw)
To: vinod.koul, djbw, leoli, scottwood, linuxppc-dev
Cc: devicetree, linux-kernel, Hongbo Zhang
From: Hongbo Zhang <hongbo.zhang@freescale.com>
Freescale QorIQ T4 and B4 introduce new 8-channel DMA engines, this patch adds
the device tree nodes for them.
Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
---
.../devicetree/bindings/powerpc/fsl/dma.txt | 66 ++++++++++++++++
arch/powerpc/boot/dts/fsl/b4si-post.dtsi | 4 +-
arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi | 81 ++++++++++++++++++++
arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi | 81 ++++++++++++++++++++
arch/powerpc/boot/dts/fsl/t4240si-post.dtsi | 4 +-
5 files changed, 232 insertions(+), 4 deletions(-)
create mode 100644 arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi
create mode 100644 arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/dma.txt b/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
index ed703d9..c9f81b9 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
+++ b/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
@@ -130,6 +130,72 @@ Example:
};
};
+** Freescale Elo3 DMA Controller
+ This is EloPlus controller with 8 channels, used in Freescale Txxx and Bxxx
+ series chips, such as t1040, t4240, b4860.
+
+Required properties:
+
+- compatible : must include "fsl,elo3-dma"
+- reg : <registers mapping for DMA general status reg>
+- ranges : describes the mapping between the address space of the
+ DMA channels and the address space of the DMA controller
+
+- DMA channel nodes:
+ - compatible : must include "fsl,eloplus-dma-channel"
+ - reg : <registers mapping for channel>
+ - interrupts : <interrupt mapping for DMA channel IRQ>
+ - interrupt-parent : optional, if needed for interrupt mapping
+
+Example:
+dma@100300 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "fsl,elo3-dma";
+ reg = <0x100300 0x4 0x100600 0x4>;
+ ranges = <0x0 0x100100 0x500>;
+ dma-channel@0 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x0 0x80>;
+ interrupts = <28 2 0 0>;
+ };
+ dma-channel@80 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x80 0x80>;
+ interrupts = <29 2 0 0>;
+ };
+ dma-channel@100 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x100 0x80>;
+ interrupts = <30 2 0 0>;
+ };
+ dma-channel@180 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x180 0x80>;
+ interrupts = <31 2 0 0>;
+ };
+ dma-channel@300 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x300 0x80>;
+ interrupts = <76 2 0 0>;
+ };
+ dma-channel@380 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x380 0x80>;
+ interrupts = <77 2 0 0>;
+ };
+ dma-channel@400 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x400 0x80>;
+ interrupts = <78 2 0 0>;
+ };
+ dma-channel@480 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x480 0x80>;
+ interrupts = <79 2 0 0>;
+ };
+};
+
Note on DMA channel compatible properties: The compatible property must say
"fsl,elo-dma-channel" or "fsl,eloplus-dma-channel" to be used by the Elo DMA
driver (fsldma). Any DMA channel used by fsldma cannot be used by another
diff --git a/arch/powerpc/boot/dts/fsl/b4si-post.dtsi b/arch/powerpc/boot/dts/fsl/b4si-post.dtsi
index 7399154..ea53ea1 100644
--- a/arch/powerpc/boot/dts/fsl/b4si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/b4si-post.dtsi
@@ -223,13 +223,13 @@
reg = <0xe2000 0x1000>;
};
-/include/ "qoriq-dma-0.dtsi"
+/include/ "elo3-dma-0.dtsi"
dma@100300 {
fsl,iommu-parent = <&pamu0>;
fsl,liodn-reg = <&guts 0x580>; /* DMA1LIODNR */
};
-/include/ "qoriq-dma-1.dtsi"
+/include/ "elo3-dma-1.dtsi"
dma@101300 {
fsl,iommu-parent = <&pamu0>;
fsl,liodn-reg = <&guts 0x584>; /* DMA2LIODNR */
diff --git a/arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi b/arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi
new file mode 100644
index 0000000..69a3277
--- /dev/null
+++ b/arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi
@@ -0,0 +1,81 @@
+/*
+ * QorIQ DMA device tree stub [ controller @ offset 0x100000 ]
+ *
+ * Copyright 2013 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+dma0: dma@100300 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "fsl,elo3-dma";
+ reg = <0x100300 0x4 0x100600 0x4>;
+ ranges = <0x0 0x100100 0x500>;
+ dma-channel@0 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x0 0x80>;
+ interrupts = <28 2 0 0>;
+ };
+ dma-channel@80 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x80 0x80>;
+ interrupts = <29 2 0 0>;
+ };
+ dma-channel@100 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x100 0x80>;
+ interrupts = <30 2 0 0>;
+ };
+ dma-channel@180 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x180 0x80>;
+ interrupts = <31 2 0 0>;
+ };
+ dma-channel@300 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x300 0x80>;
+ interrupts = <76 2 0 0>;
+ };
+ dma-channel@380 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x380 0x80>;
+ interrupts = <77 2 0 0>;
+ };
+ dma-channel@400 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x400 0x80>;
+ interrupts = <78 2 0 0>;
+ };
+ dma-channel@480 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x480 0x80>;
+ interrupts = <79 2 0 0>;
+ };
+};
diff --git a/arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi b/arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi
new file mode 100644
index 0000000..d410948
--- /dev/null
+++ b/arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi
@@ -0,0 +1,81 @@
+/*
+ * QorIQ DMA device tree stub [ controller @ offset 0x101000 ]
+ *
+ * Copyright 2013 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+dma1: dma@101300 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "fsl,elo3-dma";
+ reg = <0x101300 0x4 0x101600 0x4>;
+ ranges = <0x0 0x101100 0x500>;
+ dma-channel@0 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x0 0x80>;
+ interrupts = <32 2 0 0>;
+ };
+ dma-channel@80 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x80 0x80>;
+ interrupts = <33 2 0 0>;
+ };
+ dma-channel@100 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x100 0x80>;
+ interrupts = <34 2 0 0>;
+ };
+ dma-channel@180 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x180 0x80>;
+ interrupts = <35 2 0 0>;
+ };
+ dma-channel@300 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x300 0x80>;
+ interrupts = <80 2 0 0>;
+ };
+ dma-channel@380 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x380 0x80>;
+ interrupts = <81 2 0 0>;
+ };
+ dma-channel@400 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x400 0x80>;
+ interrupts = <82 2 0 0>;
+ };
+ dma-channel@480 {
+ compatible = "fsl,eloplus-dma-channel";
+ reg = <0x480 0x80>;
+ interrupts = <83 2 0 0>;
+ };
+};
diff --git a/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi b/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
index bd611a9..ec95c60 100644
--- a/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
@@ -387,8 +387,8 @@
reg = <0xea000 0x4000>;
};
-/include/ "qoriq-dma-0.dtsi"
-/include/ "qoriq-dma-1.dtsi"
+/include/ "elo3-dma-0.dtsi"
+/include/ "elo3-dma-1.dtsi"
/include/ "qoriq-espi-0.dtsi"
spi@110000 {
--
1.7.9.5
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH v6 2/3] DMA: Freescale: Add new 8-channel DMA engine device tree nodes
2013-07-26 10:27 ` [PATCH v6 2/3] DMA: Freescale: Add new 8-channel DMA engine device tree nodes hongbo.zhang
@ 2013-07-26 22:03 ` Scott Wood
0 siblings, 0 replies; 6+ messages in thread
From: Scott Wood @ 2013-07-26 22:03 UTC (permalink / raw)
To: hongbo.zhang
Cc: vinod.koul, djbw, leoli, linuxppc-dev, devicetree, linux-kernel
On 07/26/2013 05:27:15 AM, hongbo.zhang@freescale.com wrote:
> From: Hongbo Zhang <hongbo.zhang@freescale.com>
>
> Freescale QorIQ T4 and B4 introduce new 8-channel DMA engines, this
> patch adds
> the device tree nodes for them.
>
> Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
> ---
> .../devicetree/bindings/powerpc/fsl/dma.txt | 66
> ++++++++++++++++
> arch/powerpc/boot/dts/fsl/b4si-post.dtsi | 4 +-
> arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi | 81
> ++++++++++++++++++++
> arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi | 81
> ++++++++++++++++++++
> arch/powerpc/boot/dts/fsl/t4240si-post.dtsi | 4 +-
> 5 files changed, 232 insertions(+), 4 deletions(-)
> create mode 100644 arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi
> create mode 100644 arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi
>
> diff --git a/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> b/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> index ed703d9..c9f81b9 100644
> --- a/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> +++ b/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> @@ -130,6 +130,72 @@ Example:
> };
> };
>
> +** Freescale Elo3 DMA Controller
> + This is EloPlus controller with 8 channels, used in Freescale
> Txxx and Bxxx
> + series chips, such as t1040, t4240, b4860.
> +
> +Required properties:
> +
> +- compatible : must include "fsl,elo3-dma"
OK, you fixed it here, but you still have the "fsl,CHIP-dma" language
in the rest of the document. There is no difference between elo3 and
previous chips regarding fsl,CHIP-dma as far as the binding is
concerned.
-Scott
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v6 3/3] DMA: Freescale: update driver to support 8-channel DMA engine
2013-07-26 10:27 [PATCH v6 0/3] DMA: Freescale: Add support for 8-channel DMA engine hongbo.zhang
2013-07-26 10:27 ` [PATCH v6 1/3] DMA: Freescale: revise device tree binding document hongbo.zhang
2013-07-26 10:27 ` [PATCH v6 2/3] DMA: Freescale: Add new 8-channel DMA engine device tree nodes hongbo.zhang
@ 2013-07-26 10:27 ` hongbo.zhang
2013-07-28 13:51 ` Vinod Koul
2 siblings, 1 reply; 6+ messages in thread
From: hongbo.zhang @ 2013-07-26 10:27 UTC (permalink / raw)
To: vinod.koul, djbw, leoli, scottwood, linuxppc-dev
Cc: devicetree, linux-kernel, Hongbo Zhang
From: Hongbo Zhang <hongbo.zhang@freescale.com>
This patch adds support to 8-channel DMA engine, thus the driver works for both
the new 8-channel and the legacy 4-channel DMA engines.
Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
---
drivers/dma/Kconfig | 9 +++++----
drivers/dma/fsldma.c | 9 ++++++---
drivers/dma/fsldma.h | 2 +-
3 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 6825957..3979c65 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -89,14 +89,15 @@ config AT_HDMAC
Support the Atmel AHB DMA controller.
config FSL_DMA
- tristate "Freescale Elo and Elo Plus DMA support"
+ tristate "Freescale Elo series DMA support"
depends on FSL_SOC
select DMA_ENGINE
select ASYNC_TX_ENABLE_CHANNEL_SWITCH
---help---
- Enable support for the Freescale Elo and Elo Plus DMA controllers.
- The Elo is the DMA controller on some 82xx and 83xx parts, and the
- Elo Plus is the DMA controller on 85xx and 86xx parts.
+ Enable support for the Freescale Elo series DMA controllers.
+ The Elo is the DMA controller on some mpc82xx and mpc83xx parts, the
+ EloPlus is on mpc85xx and mpc86xx and Pxxx parts, and the Elo3 is on
+ some Txxx and Bxxx parts.
config MPC512X_DMA
tristate "Freescale MPC512x built-in DMA engine support"
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 49e8fbd..16a9a48 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -1261,7 +1261,9 @@ static int fsl_dma_chan_probe(struct fsldma_device *fdev,
WARN_ON(fdev->feature != chan->feature);
chan->dev = fdev->dev;
- chan->id = ((res.start - 0x100) & 0xfff) >> 7;
+ chan->id = (res.start & 0xfff) < 0x300 ?
+ ((res.start - 0x100) & 0xfff) >> 7 :
+ ((res.start - 0x200) & 0xfff) >> 7;
if (chan->id >= FSL_DMA_MAX_CHANS_PER_DEVICE) {
dev_err(fdev->dev, "too many channels for device\n");
err = -EINVAL;
@@ -1434,6 +1436,7 @@ static int fsldma_of_remove(struct platform_device *op)
}
static const struct of_device_id fsldma_of_ids[] = {
+ { .compatible = "fsl,elo3-dma", },
{ .compatible = "fsl,eloplus-dma", },
{ .compatible = "fsl,elo-dma", },
{}
@@ -1455,7 +1458,7 @@ static struct platform_driver fsldma_of_driver = {
static __init int fsldma_init(void)
{
- pr_info("Freescale Elo / Elo Plus DMA driver\n");
+ pr_info("Freescale Elo series DMA driver\n");
return platform_driver_register(&fsldma_of_driver);
}
@@ -1467,5 +1470,5 @@ static void __exit fsldma_exit(void)
subsys_initcall(fsldma_init);
module_exit(fsldma_exit);
-MODULE_DESCRIPTION("Freescale Elo / Elo Plus DMA driver");
+MODULE_DESCRIPTION("Freescale Elo series DMA driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h
index f5c3879..1ffc244 100644
--- a/drivers/dma/fsldma.h
+++ b/drivers/dma/fsldma.h
@@ -112,7 +112,7 @@ struct fsldma_chan_regs {
};
struct fsldma_chan;
-#define FSL_DMA_MAX_CHANS_PER_DEVICE 4
+#define FSL_DMA_MAX_CHANS_PER_DEVICE 8
struct fsldma_device {
void __iomem *regs; /* DGSR register base */
--
1.7.9.5
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH v6 3/3] DMA: Freescale: update driver to support 8-channel DMA engine
2013-07-26 10:27 ` [PATCH v6 3/3] DMA: Freescale: update driver to support 8-channel DMA engine hongbo.zhang
@ 2013-07-28 13:51 ` Vinod Koul
0 siblings, 0 replies; 6+ messages in thread
From: Vinod Koul @ 2013-07-28 13:51 UTC (permalink / raw)
To: hongbo.zhang
Cc: djbw, leoli, scottwood, linuxppc-dev, devicetree, linux-kernel
On Fri, Jul 26, 2013 at 06:27:16PM +0800, hongbo.zhang@freescale.com wrote:
> From: Hongbo Zhang <hongbo.zhang@freescale.com>
>
> This patch adds support to 8-channel DMA engine, thus the driver works for both
> the new 8-channel and the legacy 4-channel DMA engines.
>
> Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
This looks fine. I need someone to ACK the DT bindings for the series to go in
~Vinod
^ permalink raw reply [flat|nested] 6+ messages in thread