Thread (50 messages) 50 messages, 9 authors, 2013-01-22

[RFC PATCH v3 02/16] ARM: davinci: move private EDMA API to arm/common

From: Sekhar Nori <hidden>
Date: 2013-01-22 15:41:08
Also in: linux-devicetree, linux-mmc, linux-omap, linux-spi, lkml

Matt,

Sorry about the late reply. I noticed this mail only after I started to
look at v5 of your series :(

On 1/11/2013 5:21 AM, Matt Porter wrote:
On Sun, Oct 28, 2012 at 01:47:09PM +0530, Sekhar Nori wrote:
quoted
On 10/18/2012 6:56 PM, Matt Porter wrote:
quoted
Move mach-davinci/dma.c to common/edma.c so it can be used
by OMAP (specifically AM33xx) as well. This just moves the
private EDMA API but does not support OMAP.

Signed-off-by: Matt Porter <redacted>
---
quoted
diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
index 4c48a36..f45d591 100644
--- a/arch/arm/mach-davinci/devices.c
+++ b/arch/arm/mach-davinci/devices.c
@@ -19,9 +19,10 @@
 #include <mach/irqs.h>
 #include <mach/cputype.h>
 #include <mach/mux.h>
-#include <mach/edma.h>
 #include <linux/platform_data/mmc-davinci.h>
 #include <mach/time.h>
+#include <linux/platform_data/edma.h>
Can you please introduce a patch to clean this mixture of linux/ and
mach/ includes?
Yeah, are you ok with a follow on series to clean all these files? I
don't want to make this series longer with something not dma related
that's purely cleanup from the great header reorg of 2012.
Okay. I agree doing this sort of change now will cause merge issues.
quoted
quoted
+
 
 #include "davinci.h"
 #include "clock.h"
@@ -141,10 +142,10 @@ static struct resource mmcsd0_resources[] = {
 	},
 	/* DMA channels: RX, then TX */
 	{
-		.start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
+		.start = EDMA_CTLR_CHAN(0, 26),
Instead of just replacing the event #defines with plain numbers, can you
introduce a mach-davinci local edma.h which can then be included in the
davinci platform files which refer to edma channel numbers?
Ok, so when I removed the old edma.h it was full of unused defines and
we are left with just this one. If I introduced something like that it
would be used in just one place here. and only for these two values.
How about we just add a comment?
I prefer adding a local #define in this file. This will keep it
consistent with what is done in arch/arm/mach-davinci/dm365.c for
example. Same for the change in sound/soc/davinci/davinci-sffsdr.c
quoted
quoted
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index 7cd56ed..153fab8 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -28,6 +28,7 @@ config ARCH_OMAP2PLUS
 	select OMAP_DM_TIMER
 	select PROC_DEVICETREE if PROC_FS
 	select SPARSE_IRQ
+	select TI_PRIV_EDMA
This hunk does not seem to belong to subject of this patch.
Let me reword the subject/description. The idea of this logical
chunk was to put everything in place to make it build on OMAP,
with the expectation that the build fails without the next patch
in the series.
But this will break bisect. With just this patch applied, omap build
breaks. Looks like it will be more logical to merge this hunk with 3/14
since that's when you really start using the private DMA support on OMAP
platforms.

This issue is a must fix IMO.

I am ok with the patch otherwise. With these changes done, you can add:

Acked-by: Sekhar Nori <redacted>

Thanks,
Sekhar
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