* Jon Hunter <jon-hun...@ti.com> [130319 09:08]:
> Vinod, Tony, Benoit,
>
> On 02/26/2013 12:27 PM, Jon Hunter wrote:
> > If the device-tree blob is present during boot, then register the SDMA
> > controller with the device-tree DMA driver so that we can use device-tree
> > to look-up DMA client information.
> >
> > Signed-off-by: Jon Hunter <jon-hun...@ti.com>
> > Reviewed-by: Felipe Balbi <ba...@ti.com>
> > Acked-by: Santosh Shilimkar <santosh.shilim...@ti.com>
> > Tested-by: Santosh Shilimkar <santosh.shilim...@ti.com>
> > ---
> > arch/arm/mach-omap2/dma.c | 4 ++++
> > drivers/dma/omap-dma.c | 38 ++++++++++++++++++++++++++++++++++++--
> > 2 files changed, 40 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/arm/mach-omap2/dma.c b/arch/arm/mach-omap2/dma.c
> > index dab9fc0..49fd0d5 100644
> > --- a/arch/arm/mach-omap2/dma.c
> > +++ b/arch/arm/mach-omap2/dma.c
> > @@ -28,6 +28,7 @@
> > #include <linux/init.h>
> > #include <linux/device.h>
> > #include <linux/dma-mapping.h>
> > +#include <linux/of.h>
> > #include <linux/omap-dma.h>
> >
> > #include "soc.h"
> > @@ -304,6 +305,9 @@ static int __init omap2_system_dma_init(void)
> > if (res)
> > return res;
> >
> > + if (of_have_populated_dt())
> > + return res;
> > +
> > pdev = platform_device_register_full(&omap_dma_dev_info);
> > if (IS_ERR(pdev))
> > return PTR_ERR(pdev);
AFAIK we don't currently have anything else touching this file..
> > diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
> > index c4b4fd2..2ea3d7e 100644
> > --- a/drivers/dma/omap-dma.c
> > +++ b/drivers/dma/omap-dma.c
> > @@ -16,6 +16,8 @@
> > #include <linux/platform_device.h>
> > #include <linux/slab.h>
> > #include <linux/spinlock.h>
> > +#include <linux/of_dma.h>
> > +#include <linux/of_device.h>
> >
> > #include "virt-dma.h"
> >
> > @@ -67,6 +69,10 @@ static const unsigned es_bytes[] = {
> > [OMAP_DMA_DATA_TYPE_S32] = 4,
> > };
> >
> > +static struct of_dma_filter_info omap_dma_info = {
> > + .filter_fn = omap_dma_filter_fn,
> > +};
> > +
> > static inline struct omap_dmadev *to_omap_dma_dev(struct dma_device *d)
> > {
> > return container_of(d, struct omap_dmadev, ddev);
> > @@ -621,8 +627,22 @@ static int omap_dma_probe(struct platform_device *pdev)
> > pr_warn("OMAP-DMA: failed to register slave DMA engine device:
> > %d\n",
> > rc);
> > omap_dma_free(od);
> > - } else {
> > - platform_set_drvdata(pdev, od);
> > + return rc;
> > + }
> > +
> > + platform_set_drvdata(pdev, od);
> > +
> > + if (pdev->dev.of_node) {
> > + omap_dma_info.dma_cap = od->ddev.cap_mask;
> > +
> > + /* Device-tree DMA controller registration */
> > + rc = of_dma_controller_register(pdev->dev.of_node,
> > + of_dma_simple_xlate, &omap_dma_info);
> > + if (rc) {
> > + pr_warn("OMAP-DMA: failed to register DMA
> > controller\n");
> > + dma_async_device_unregister(&od->ddev);
> > + omap_dma_free(od);
> > + }
> > }
> >
> > dev_info(&pdev->dev, "OMAP DMA engine driver\n");
> > @@ -634,18 +654,32 @@ static int omap_dma_remove(struct platform_device
> > *pdev)
> > {
> > struct omap_dmadev *od = platform_get_drvdata(pdev);
> >
> > + if (pdev->dev.of_node)
> > + of_dma_controller_free(pdev->dev.of_node);
> > +
> > dma_async_device_unregister(&od->ddev);
> > omap_dma_free(od);
> >
> > return 0;
> > }
> >
> > +static const struct of_device_id omap_dma_match[] = {
> > + { .compatible = "ti,omap2420-sdma", },
> > + { .compatible = "ti,omap2430-sdma", },
> > + { .compatible = "ti,omap3430-sdma", },
> > + { .compatible = "ti,omap3630-sdma", },
> > + { .compatible = "ti,omap4430-sdma", },
> > + {},
> > +};
> > +MODULE_DEVICE_TABLE(of, omap_dma_match);
> > +
> > static struct platform_driver omap_dma_driver = {
> > .probe = omap_dma_probe,
> > .remove = omap_dma_remove,
> > .driver = {
> > .name = "omap-dma-engine",
> > .owner = THIS_MODULE,
> > + .of_match_table = of_match_ptr(omap_dma_match),
> > },
> > };
>
> Who's tree does it make most sense for this patch to go through?
>
> Benoit has queued up patch 1/2 and so I am not sure if this should go
> via Benoit tree to Tony or directly via Vinod's tree. What are your
> thoughts?
OK
> It would be great if this could make v3.10.
I suggest Vinod/Grant/Linus W queue this patch:
Acked-by: Tony Lindgren <t...@atomide.com>
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