On Mon, Apr 01, 2013 at 12:48:26PM -0500, Jon Hunter wrote:
> Vinod,
>
> On 03/20/2013 11:36 AM, Tony Lindgren wrote:
> > * Jon Hunter <jon-hunter@xxxxxx> [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-hunter@xxxxxx>
> >>> Reviewed-by: Felipe Balbi <balbi@xxxxxx>
> >>> Acked-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
> >>> Tested-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
> >>> ---
> >>> 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 <tony@xxxxxxxxxxx>
>
> Can you take this patch with Tony's ACK? Let me know if you want me to
> resend with the ACK.
ahhh due to my vcation/travel looks like this one was skipped, I have
applied it now should show up in linus's tree during next merg window
Sorry for delay
~Vinod
>
> Cheers
> Jon
>
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
