Patchwork [6/6] ARM: mxc: clean up imx-dma device registration

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Submitter Shawn Guo
Date June 13, 2011, 7:37 a.m.
Message ID <1307950645-26529-7-git-send-email-shawn.guo@linaro.org>
Download mbox | patch
Permalink /patch/100141/
State New
Headers show

Comments

Shawn Guo - June 13, 2011, 7:37 a.m.
The patch follows the implementation of gpio-mxc device registration
to break the concentrated imx-dma device registration into soc
specific setup function.  Then we can avoid the churn of "#ifdef"
and the cpu_is_mx checking on such a long list, which makes no sense,
considering more soc supports need to be added and we need to support
single image for multiple socs in the long run.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
 arch/arm/mach-imx/mm-imx21.c                    |    3 +
 arch/arm/mach-imx/mm-imx25.c                    |   26 +++
 arch/arm/mach-imx/mm-imx27.c                    |    3 +
 arch/arm/mach-imx/mm-imx31.c                    |   24 +++
 arch/arm/mach-imx/mm-imx35.c                    |   44 +++++
 arch/arm/mach-mx5/mm.c                          |   23 +++
 arch/arm/plat-mxc/devices.c                     |   16 ++-
 arch/arm/plat-mxc/devices/platform-imx-dma.c    |  202 ++---------------------
 arch/arm/plat-mxc/include/mach/devices-common.h |    6 +
 9 files changed, 157 insertions(+), 190 deletions(-)
Shawn Guo - June 20, 2011, 2:50 p.m.
Hi Sascha,

Any comment on this one?

Regards,
Shawn

On Mon, Jun 13, 2011 at 03:37:25PM +0800, Shawn Guo wrote:
> The patch follows the implementation of gpio-mxc device registration
> to break the concentrated imx-dma device registration into soc
> specific setup function.  Then we can avoid the churn of "#ifdef"
> and the cpu_is_mx checking on such a long list, which makes no sense,
> considering more soc supports need to be added and we need to support
> single image for multiple socs in the long run.
> 
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
> ---
>  arch/arm/mach-imx/mm-imx21.c                    |    3 +
>  arch/arm/mach-imx/mm-imx25.c                    |   26 +++
>  arch/arm/mach-imx/mm-imx27.c                    |    3 +
>  arch/arm/mach-imx/mm-imx31.c                    |   24 +++
>  arch/arm/mach-imx/mm-imx35.c                    |   44 +++++
>  arch/arm/mach-mx5/mm.c                          |   23 +++
>  arch/arm/plat-mxc/devices.c                     |   16 ++-
>  arch/arm/plat-mxc/devices/platform-imx-dma.c    |  202 ++---------------------
>  arch/arm/plat-mxc/include/mach/devices-common.h |    6 +
>  9 files changed, 157 insertions(+), 190 deletions(-)
>
Shawn Guo - June 21, 2011, 2:41 p.m.
On Mon, Jun 20, 2011 at 10:50:55PM +0800, Shawn Guo wrote:
> Hi Sascha,
> 
> Any comment on this one?
> 
One more ping: any comment?

The patch has been out there for a while with no comments.  My
understanding is you will need to either give comments or apply
the patch, no?

> Regards,
> Shawn
> 
> On Mon, Jun 13, 2011 at 03:37:25PM +0800, Shawn Guo wrote:
> > The patch follows the implementation of gpio-mxc device registration
> > to break the concentrated imx-dma device registration into soc
> > specific setup function.  Then we can avoid the churn of "#ifdef"
> > and the cpu_is_mx checking on such a long list, which makes no sense,
> > considering more soc supports need to be added and we need to support
> > single image for multiple socs in the long run.
> > 
> > Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
> > ---
> >  arch/arm/mach-imx/mm-imx21.c                    |    3 +
> >  arch/arm/mach-imx/mm-imx25.c                    |   26 +++
> >  arch/arm/mach-imx/mm-imx27.c                    |    3 +
> >  arch/arm/mach-imx/mm-imx31.c                    |   24 +++
> >  arch/arm/mach-imx/mm-imx35.c                    |   44 +++++
> >  arch/arm/mach-mx5/mm.c                          |   23 +++
> >  arch/arm/plat-mxc/devices.c                     |   16 ++-
> >  arch/arm/plat-mxc/devices/platform-imx-dma.c    |  202 ++---------------------
> >  arch/arm/plat-mxc/include/mach/devices-common.h |    6 +
> >  9 files changed, 157 insertions(+), 190 deletions(-)
> > 
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
Wolfram Sang - June 21, 2011, 3:13 p.m.
> The patch has been out there for a while with no comments.  My
> understanding is you will need to either give comments or apply
> the patch, no?

Yes, but there is no timeframe guaranteed. We try our best to respond as fast
as possible, but we (like most others) have a couple of things on our
todo-list.

Regards,

   Wolfram
Sascha Hauer - June 21, 2011, 10:57 p.m.
On Mon, Jun 20, 2011 at 10:50:55PM +0800, Shawn Guo wrote:
> Hi Sascha,
> 
> Any comment on this one?
>

Please respin this series on the for-next branch. Fabio has
added i.MX53 support in the meantime and this does not apply anymore.

Sascha
 
> Regards,
> Shawn
> 
> On Mon, Jun 13, 2011 at 03:37:25PM +0800, Shawn Guo wrote:
> > The patch follows the implementation of gpio-mxc device registration
> > to break the concentrated imx-dma device registration into soc
> > specific setup function.  Then we can avoid the churn of "#ifdef"
> > and the cpu_is_mx checking on such a long list, which makes no sense,
> > considering more soc supports need to be added and we need to support
> > single image for multiple socs in the long run.
> > 
> > Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
> > ---
> >  arch/arm/mach-imx/mm-imx21.c                    |    3 +
> >  arch/arm/mach-imx/mm-imx25.c                    |   26 +++
> >  arch/arm/mach-imx/mm-imx27.c                    |    3 +
> >  arch/arm/mach-imx/mm-imx31.c                    |   24 +++
> >  arch/arm/mach-imx/mm-imx35.c                    |   44 +++++
> >  arch/arm/mach-mx5/mm.c                          |   23 +++
> >  arch/arm/plat-mxc/devices.c                     |   16 ++-
> >  arch/arm/plat-mxc/devices/platform-imx-dma.c    |  202 ++---------------------
> >  arch/arm/plat-mxc/include/mach/devices-common.h |    6 +
> >  9 files changed, 157 insertions(+), 190 deletions(-)
> > 
> 
>
Shawn Guo - June 22, 2011, 2:43 a.m.
On Tue, Jun 21, 2011 at 05:13:26PM +0200, Wolfram Sang wrote:
> 
> > The patch has been out there for a while with no comments.  My
> > understanding is you will need to either give comments or apply
> > the patch, no?
> 
> Yes, but there is no timeframe guaranteed. We try our best to respond as fast
> as possible, but we (like most others) have a couple of things on our
> todo-list.
> 
Totally understandable.  I could have hold this second ping for
another few days.  But I saw Sascha picked up Fabio's mx53 SDMA
patch which grows the stuff I'm trying to clean up.  It actually
is Fabio's patch reminding me to send the patch clean this stuff
up.

So in this particular case, it's not about time frame but picking
up the right patch in the right order.
Shawn Guo - June 22, 2011, 2:53 a.m.
On Wed, Jun 22, 2011 at 12:57:58AM +0200, Sascha Hauer wrote:
> On Mon, Jun 20, 2011 at 10:50:55PM +0800, Shawn Guo wrote:
> > Hi Sascha,
> > 
> > Any comment on this one?
> >
> 
> Please respin this series on the for-next branch. Fabio has
> added i.MX53 support in the meantime and this does not apply anymore.
> 
This is exactly the thing I feel strange about.  I sent the patch
trying to stop people adding more churn there.  However, you applied
the patch adding more churn yesterday, and are asking me to rebase
this cleanup patch set today.  IMO, the cleanup patch should be
applied first, and the i.MX53 patch should be asked to respin.

But no problem, I will do.
Wolfram Sang - June 22, 2011, 6:33 a.m.
> So in this particular case, it's not about time frame but picking
> up the right patch in the right order.

Ah, okay. That's a perfectly valid reason, of course. Would be nice to state
the reason in the "ping"-mail next time :)

Patch

diff --git a/arch/arm/mach-imx/mm-imx21.c b/arch/arm/mach-imx/mm-imx21.c
index f0fb8bc..8d27f47 100644
--- a/arch/arm/mach-imx/mm-imx21.c
+++ b/arch/arm/mach-imx/mm-imx21.c
@@ -22,6 +22,7 @@ 
 #include <linux/init.h>
 #include <mach/hardware.h>
 #include <mach/common.h>
+#include <mach/devices-common.h>
 #include <asm/pgtable.h>
 #include <asm/mach/map.h>
 #include <mach/irqs.h>
@@ -82,4 +83,6 @@  void __init imx21_soc_init(void)
 	mxc_register_gpio(3, MX21_GPIO4_BASE_ADDR, SZ_4K, MX21_INT_GPIO, 0);
 	mxc_register_gpio(4, MX21_GPIO5_BASE_ADDR, SZ_4K, MX21_INT_GPIO, 0);
 	mxc_register_gpio(5, MX21_GPIO6_BASE_ADDR, SZ_4K, MX21_INT_GPIO, 0);
+
+	imx_add_imx_dma();
 }
diff --git a/arch/arm/mach-imx/mm-imx25.c b/arch/arm/mach-imx/mm-imx25.c
index 1b6d583..0c54520 100644
--- a/arch/arm/mach-imx/mm-imx25.c
+++ b/arch/arm/mach-imx/mm-imx25.c
@@ -24,6 +24,7 @@ 
 #include <asm/mach/map.h>
 
 #include <mach/common.h>
+#include <mach/devices-common.h>
 #include <mach/hardware.h>
 #include <mach/mx25.h>
 #include <mach/iomux-v3.h>
@@ -61,10 +62,35 @@  void __init mx25_init_irq(void)
 	mxc_init_irq(MX25_IO_ADDRESS(MX25_AVIC_BASE_ADDR));
 }
 
+static struct sdma_script_start_addrs imx25_sdma_script __initdata = {
+	.ap_2_ap_addr = 729,
+	.uart_2_mcu_addr = 904,
+	.per_2_app_addr = 1255,
+	.mcu_2_app_addr = 834,
+	.uartsh_2_mcu_addr = 1120,
+	.per_2_shp_addr = 1329,
+	.mcu_2_shp_addr = 1048,
+	.ata_2_mcu_addr = 1560,
+	.mcu_2_ata_addr = 1479,
+	.app_2_per_addr = 1189,
+	.app_2_mcu_addr = 770,
+	.shp_2_per_addr = 1407,
+	.shp_2_mcu_addr = 979,
+};
+
+static struct sdma_platform_data imx25_sdma_pdata __initdata = {
+	.sdma_version = 2,
+	.cpu_name = "imx25",
+	.to_version = 1,
+	.script_addrs = &imx25_sdma_script,
+};
+
 void __init imx25_soc_init(void)
 {
 	mxc_register_gpio(0, MX25_GPIO1_BASE_ADDR, SZ_16K, MX25_INT_GPIO1, 0);
 	mxc_register_gpio(1, MX25_GPIO2_BASE_ADDR, SZ_16K, MX25_INT_GPIO2, 0);
 	mxc_register_gpio(2, MX25_GPIO3_BASE_ADDR, SZ_16K, MX25_INT_GPIO3, 0);
 	mxc_register_gpio(3, MX25_GPIO4_BASE_ADDR, SZ_16K, MX25_INT_GPIO4, 0);
+
+	imx_add_imx_sdma(MX25_SDMA_BASE_ADDR, MX25_INT_SDMA, &imx25_sdma_pdata);
 }
diff --git a/arch/arm/mach-imx/mm-imx27.c b/arch/arm/mach-imx/mm-imx27.c
index d3700ce..47a6ada 100644
--- a/arch/arm/mach-imx/mm-imx27.c
+++ b/arch/arm/mach-imx/mm-imx27.c
@@ -22,6 +22,7 @@ 
 #include <linux/init.h>
 #include <mach/hardware.h>
 #include <mach/common.h>
+#include <mach/devices-common.h>
 #include <asm/pgtable.h>
 #include <asm/mach/map.h>
 #include <mach/irqs.h>
@@ -82,4 +83,6 @@  void __init imx27_soc_init(void)
 	mxc_register_gpio(3, MX27_GPIO4_BASE_ADDR, SZ_4K, MX27_INT_GPIO, 0);
 	mxc_register_gpio(4, MX27_GPIO5_BASE_ADDR, SZ_4K, MX27_INT_GPIO, 0);
 	mxc_register_gpio(5, MX27_GPIO6_BASE_ADDR, SZ_4K, MX27_INT_GPIO, 0);
+
+	imx_add_imx_dma();
 }
diff --git a/arch/arm/mach-imx/mm-imx31.c b/arch/arm/mach-imx/mm-imx31.c
index cb16ac6..bc00a2f 100644
--- a/arch/arm/mach-imx/mm-imx31.c
+++ b/arch/arm/mach-imx/mm-imx31.c
@@ -24,6 +24,7 @@ 
 #include <asm/mach/map.h>
 
 #include <mach/common.h>
+#include <mach/devices-common.h>
 #include <mach/hardware.h>
 #include <mach/iomux-v3.h>
 #include <mach/irqs.h>
@@ -57,9 +58,32 @@  void __init mx31_init_irq(void)
 	mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
 }
 
+static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = {
+	.per_2_per_addr = 1677,
+};
+
+static struct sdma_script_start_addrs imx31_to2_sdma_script __initdata = {
+	.ap_2_ap_addr = 423,
+	.ap_2_bp_addr = 829,
+	.bp_2_ap_addr = 1029,
+};
+
+static struct sdma_platform_data imx31_sdma_pdata __initdata = {
+	.sdma_version = 1,
+	.cpu_name = "imx31",
+};
+
 void __init imx31_soc_init(void)
 {
+	int to_version = mx31_revision() >> 4;
+
 	mxc_register_gpio(0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0);
 	mxc_register_gpio(1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0);
 	mxc_register_gpio(2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0);
+
+	imx31_sdma_pdata.to_version = to_version;
+	imx31_sdma_pdata.script_addrs =
+		(to_version == 1) ?  &imx31_to1_sdma_script :
+				     &imx31_to2_sdma_script;
+	imx_add_imx_sdma(MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
 }
diff --git a/arch/arm/mach-imx/mm-imx35.c b/arch/arm/mach-imx/mm-imx35.c
index 648bfca..b3a474b 100644
--- a/arch/arm/mach-imx/mm-imx35.c
+++ b/arch/arm/mach-imx/mm-imx35.c
@@ -25,6 +25,7 @@ 
 #include <asm/hardware/cache-l2x0.h>
 
 #include <mach/common.h>
+#include <mach/devices-common.h>
 #include <mach/hardware.h>
 #include <mach/iomux-v3.h>
 #include <mach/irqs.h>
@@ -54,9 +55,52 @@  void __init mx35_init_irq(void)
 	mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR));
 }
 
+static struct sdma_script_start_addrs imx35_to1_sdma_script __initdata = {
+	.ap_2_ap_addr = 642,
+	.uart_2_mcu_addr = 817,
+	.mcu_2_app_addr = 747,
+	.uartsh_2_mcu_addr = 1183,
+	.per_2_shp_addr = 1033,
+	.mcu_2_shp_addr = 961,
+	.ata_2_mcu_addr = 1333,
+	.mcu_2_ata_addr = 1252,
+	.app_2_mcu_addr = 683,
+	.shp_2_per_addr = 1111,
+	.shp_2_mcu_addr = 892,
+};
+
+static struct sdma_script_start_addrs imx35_to2_sdma_script __initdata = {
+	.ap_2_ap_addr = 729,
+	.uart_2_mcu_addr = 904,
+	.per_2_app_addr = 1597,
+	.mcu_2_app_addr = 834,
+	.uartsh_2_mcu_addr = 1270,
+	.per_2_shp_addr = 1120,
+	.mcu_2_shp_addr = 1048,
+	.ata_2_mcu_addr = 1429,
+	.mcu_2_ata_addr = 1339,
+	.app_2_per_addr = 1531,
+	.app_2_mcu_addr = 770,
+	.shp_2_per_addr = 1198,
+	.shp_2_mcu_addr = 979,
+};
+
+static struct sdma_platform_data imx35_sdma_pdata __initdata = {
+	.sdma_version = 2,
+	.cpu_name = "imx35",
+};
+
 void __init imx35_soc_init(void)
 {
+	int to_version = mx35_revision() >> 4;
+
 	mxc_register_gpio(0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
 	mxc_register_gpio(1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
 	mxc_register_gpio(2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);
+
+	imx35_sdma_pdata.to_version = to_version;
+	imx35_sdma_pdata.script_addrs =
+		(to_version == 1) ?  &imx35_to1_sdma_script :
+				     &imx35_to2_sdma_script;
+	imx_add_imx_sdma(MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata);
 }
diff --git a/arch/arm/mach-mx5/mm.c b/arch/arm/mach-mx5/mm.c
index 800bb8b2..5af490a 100644
--- a/arch/arm/mach-mx5/mm.c
+++ b/arch/arm/mach-mx5/mm.c
@@ -18,6 +18,7 @@ 
 
 #include <mach/hardware.h>
 #include <mach/common.h>
+#include <mach/devices-common.h>
 #include <mach/iomux-v3.h>
 
 /*
@@ -100,12 +101,34 @@  void __init mx53_init_irq(void)
 	tzic_init_irq(tzic_virt);
 }
 
+static struct sdma_script_start_addrs imx51_sdma_script __initdata = {
+	.ap_2_ap_addr = 642,
+	.uart_2_mcu_addr = 817,
+	.mcu_2_app_addr = 747,
+	.mcu_2_shp_addr = 961,
+	.ata_2_mcu_addr = 1473,
+	.mcu_2_ata_addr = 1392,
+	.app_2_per_addr = 1033,
+	.app_2_mcu_addr = 683,
+	.shp_2_per_addr = 1251,
+	.shp_2_mcu_addr = 892,
+};
+
+static struct sdma_platform_data imx51_sdma_pdata __initdata = {
+	.sdma_version = 2,
+	.cpu_name = "imx51",
+	.to_version = 1,
+	.script_addrs = &imx51_sdma_script,
+};
+
 void __init imx51_soc_init(void)
 {
 	mxc_register_gpio(0, MX51_GPIO1_BASE_ADDR, SZ_16K, MX51_MXC_INT_GPIO1_LOW, MX51_MXC_INT_GPIO1_HIGH);
 	mxc_register_gpio(1, MX51_GPIO2_BASE_ADDR, SZ_16K, MX51_MXC_INT_GPIO2_LOW, MX51_MXC_INT_GPIO2_HIGH);
 	mxc_register_gpio(2, MX51_GPIO3_BASE_ADDR, SZ_16K, MX51_MXC_INT_GPIO3_LOW, MX51_MXC_INT_GPIO3_HIGH);
 	mxc_register_gpio(3, MX51_GPIO4_BASE_ADDR, SZ_16K, MX51_MXC_INT_GPIO4_LOW, MX51_MXC_INT_GPIO4_HIGH);
+
+	imx_add_imx_sdma(MX51_SDMA_BASE_ADDR, MX51_INT_SDMA, &imx51_sdma_pdata);
 }
 
 void __init imx53_soc_init(void)
diff --git a/arch/arm/plat-mxc/devices.c b/arch/arm/plat-mxc/devices.c
index fb166b2..0d6ed31 100644
--- a/arch/arm/plat-mxc/devices.c
+++ b/arch/arm/plat-mxc/devices.c
@@ -95,8 +95,22 @@  struct device mxc_aips_bus = {
 	.parent		= &platform_bus,
 };
 
+struct device mxc_ahb_bus = {
+	.init_name	= "mxc_ahb",
+	.parent		= &platform_bus,
+};
+
 static int __init mxc_device_init(void)
 {
-	return device_register(&mxc_aips_bus);
+	int ret;
+
+	ret = device_register(&mxc_aips_bus);
+	if (IS_ERR_VALUE(ret))
+		goto done;
+
+	ret = device_register(&mxc_ahb_bus);
+
+done:
+	return ret;
 }
 core_initcall(mxc_device_init);
diff --git a/arch/arm/plat-mxc/devices/platform-imx-dma.c b/arch/arm/plat-mxc/devices/platform-imx-dma.c
index 2091540..2b0fdb2 100644
--- a/arch/arm/plat-mxc/devices/platform-imx-dma.c
+++ b/arch/arm/plat-mxc/devices/platform-imx-dma.c
@@ -6,205 +6,29 @@ 
  * the terms of the GNU General Public License version 2 as published by the
  * Free Software Foundation.
  */
-#include <linux/compiler.h>
-#include <linux/err.h>
-#include <linux/init.h>
-
-#include <mach/hardware.h>
 #include <mach/devices-common.h>
-#include <mach/sdma.h>
-
-struct imx_imx_sdma_data {
-	resource_size_t iobase;
-	resource_size_t irq;
-	struct sdma_platform_data pdata;
-};
-
-#define imx_imx_sdma_data_entry_single(soc, _sdma_version, _cpu_name, _to_version)\
-	{								\
-		.iobase = soc ## _SDMA ## _BASE_ADDR,			\
-		.irq = soc ## _INT_SDMA,				\
-		.pdata = {						\
-			.sdma_version = _sdma_version,			\
-			.cpu_name = _cpu_name,				\
-			.to_version = _to_version,			\
-		},							\
-	}
-
-#ifdef CONFIG_SOC_IMX25
-struct imx_imx_sdma_data imx25_imx_sdma_data __initconst =
-	imx_imx_sdma_data_entry_single(MX25, 2, "imx25", 1);
-#endif /* ifdef CONFIG_SOC_IMX25 */
 
-#ifdef CONFIG_SOC_IMX31
-struct imx_imx_sdma_data imx31_imx_sdma_data __initdata =
-	imx_imx_sdma_data_entry_single(MX31, 1, "imx31", 1);
-#endif /* ifdef CONFIG_SOC_IMX31 */
-
-#ifdef CONFIG_SOC_IMX35
-struct imx_imx_sdma_data imx35_imx_sdma_data __initdata =
-	imx_imx_sdma_data_entry_single(MX35, 2, "imx35", 1);
-#endif /* ifdef CONFIG_SOC_IMX35 */
-
-#ifdef CONFIG_SOC_IMX51
-struct imx_imx_sdma_data imx51_imx_sdma_data __initconst =
-	imx_imx_sdma_data_entry_single(MX51, 2, "imx51", 1);
-#endif /* ifdef CONFIG_SOC_IMX51 */
+struct platform_device __init __maybe_unused *imx_add_imx_dma(void)
+{
+	return platform_device_register_resndata(&mxc_ahb_bus,
+			"imx-dma", -1, NULL, 0, NULL, 0);
+}
 
-static struct platform_device __init __maybe_unused *imx_add_imx_sdma(
-		const struct imx_imx_sdma_data *data)
+struct platform_device __init __maybe_unused *imx_add_imx_sdma(
+	resource_size_t iobase, int irq, struct sdma_platform_data *pdata)
 {
 	struct resource res[] = {
 		{
-			.start = data->iobase,
-			.end = data->iobase + SZ_16K - 1,
+			.start = iobase,
+			.end = iobase + SZ_16K - 1,
 			.flags = IORESOURCE_MEM,
 		}, {
-			.start = data->irq,
-			.end = data->irq,
+			.start = irq,
+			.end = irq,
 			.flags = IORESOURCE_IRQ,
 		},
 	};
 
-	return imx_add_platform_device("imx-sdma", -1,
-			res, ARRAY_SIZE(res),
-			&data->pdata, sizeof(data->pdata));
-}
-
-static struct platform_device __init __maybe_unused *imx_add_imx_dma(void)
-{
-	return imx_add_platform_device("imx-dma", -1, NULL, 0, NULL, 0);
-}
-
-#ifdef CONFIG_ARCH_MX25
-static struct sdma_script_start_addrs addr_imx25 = {
-	.ap_2_ap_addr = 729,
-	.uart_2_mcu_addr = 904,
-	.per_2_app_addr = 1255,
-	.mcu_2_app_addr = 834,
-	.uartsh_2_mcu_addr = 1120,
-	.per_2_shp_addr = 1329,
-	.mcu_2_shp_addr = 1048,
-	.ata_2_mcu_addr = 1560,
-	.mcu_2_ata_addr = 1479,
-	.app_2_per_addr = 1189,
-	.app_2_mcu_addr = 770,
-	.shp_2_per_addr = 1407,
-	.shp_2_mcu_addr = 979,
-};
-#endif
-
-#ifdef CONFIG_SOC_IMX31
-static struct sdma_script_start_addrs addr_imx31_to1 = {
-	.per_2_per_addr = 1677,
-};
-
-static struct sdma_script_start_addrs addr_imx31_to2 = {
-	.ap_2_ap_addr = 423,
-	.ap_2_bp_addr = 829,
-	.bp_2_ap_addr = 1029,
-};
-#endif
-
-#ifdef CONFIG_SOC_IMX35
-static struct sdma_script_start_addrs addr_imx35_to1 = {
-	.ap_2_ap_addr = 642,
-	.uart_2_mcu_addr = 817,
-	.mcu_2_app_addr = 747,
-	.uartsh_2_mcu_addr = 1183,
-	.per_2_shp_addr = 1033,
-	.mcu_2_shp_addr = 961,
-	.ata_2_mcu_addr = 1333,
-	.mcu_2_ata_addr = 1252,
-	.app_2_mcu_addr = 683,
-	.shp_2_per_addr = 1111,
-	.shp_2_mcu_addr = 892,
-};
-
-static struct sdma_script_start_addrs addr_imx35_to2 = {
-	.ap_2_ap_addr = 729,
-	.uart_2_mcu_addr = 904,
-	.per_2_app_addr = 1597,
-	.mcu_2_app_addr = 834,
-	.uartsh_2_mcu_addr = 1270,
-	.per_2_shp_addr = 1120,
-	.mcu_2_shp_addr = 1048,
-	.ata_2_mcu_addr = 1429,
-	.mcu_2_ata_addr = 1339,
-	.app_2_per_addr = 1531,
-	.app_2_mcu_addr = 770,
-	.shp_2_per_addr = 1198,
-	.shp_2_mcu_addr = 979,
-};
-#endif
-
-#ifdef CONFIG_SOC_IMX51
-static struct sdma_script_start_addrs addr_imx51 = {
-	.ap_2_ap_addr = 642,
-	.uart_2_mcu_addr = 817,
-	.mcu_2_app_addr = 747,
-	.mcu_2_shp_addr = 961,
-	.ata_2_mcu_addr = 1473,
-	.mcu_2_ata_addr = 1392,
-	.app_2_per_addr = 1033,
-	.app_2_mcu_addr = 683,
-	.shp_2_per_addr = 1251,
-	.shp_2_mcu_addr = 892,
-};
-#endif
-
-static int __init imxXX_add_imx_dma(void)
-{
-	struct platform_device *ret;
-
-#if defined(CONFIG_SOC_IMX21) || defined(CONFIG_SOC_IMX27)
-	if (cpu_is_mx21() || cpu_is_mx27())
-		ret = imx_add_imx_dma();
-	else
-#endif
-
-#if defined(CONFIG_SOC_IMX25)
-	if (cpu_is_mx25()) {
-		imx25_imx_sdma_data.pdata.script_addrs = &addr_imx25;
-		ret = imx_add_imx_sdma(&imx25_imx_sdma_data);
-	} else
-#endif
-
-#if defined(CONFIG_SOC_IMX31)
-	if (cpu_is_mx31()) {
-		int to_version = mx31_revision() >> 4;
-		imx31_imx_sdma_data.pdata.to_version = to_version;
-		if (to_version == 1)
-			imx31_imx_sdma_data.pdata.script_addrs = &addr_imx31_to1;
-		else
-			imx31_imx_sdma_data.pdata.script_addrs = &addr_imx31_to2;
-		ret = imx_add_imx_sdma(&imx31_imx_sdma_data);
-	} else
-#endif
-
-#if defined(CONFIG_SOC_IMX35)
-	if (cpu_is_mx35()) {
-		int to_version = mx35_revision() >> 4;
-		imx35_imx_sdma_data.pdata.to_version = to_version;
-		if (to_version == 1)
-			imx35_imx_sdma_data.pdata.script_addrs = &addr_imx35_to1;
-		else
-			imx35_imx_sdma_data.pdata.script_addrs = &addr_imx35_to2;
-		ret = imx_add_imx_sdma(&imx35_imx_sdma_data);
-	} else
-#endif
-
-#if defined(CONFIG_SOC_IMX51)
-	if (cpu_is_mx51()) {
-		imx51_imx_sdma_data.pdata.script_addrs = &addr_imx51;
-		ret = imx_add_imx_sdma(&imx51_imx_sdma_data);
-	} else
-#endif
-		ret = ERR_PTR(-ENODEV);
-
-	if (IS_ERR(ret))
-		return PTR_ERR(ret);
-
-	return 0;
+	return platform_device_register_resndata(&mxc_ahb_bus, "imx-sdma",
+			-1, res, ARRAY_SIZE(res), pdata, sizeof(*pdata));
 }
-arch_initcall(imxXX_add_imx_dma);
diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h
index 03f6266..bf93820 100644
--- a/arch/arm/plat-mxc/include/mach/devices-common.h
+++ b/arch/arm/plat-mxc/include/mach/devices-common.h
@@ -9,8 +9,10 @@ 
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/init.h>
+#include <mach/sdma.h>
 
 extern struct device mxc_aips_bus;
+extern struct device mxc_ahb_bus;
 
 struct platform_device *imx_add_platform_device_dmamask(
 		const char *name, int id,
@@ -293,3 +295,7 @@  struct imx_spi_imx_data {
 struct platform_device *__init imx_add_spi_imx(
 		const struct imx_spi_imx_data *data,
 		const struct spi_imx_master *pdata);
+
+struct platform_device *imx_add_imx_dma(void);
+struct platform_device *imx_add_imx_sdma(
+	resource_size_t iobase, int irq, struct sdma_platform_data *pdata);