On Sat, Feb 2, 2013 at 8:39 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > On Saturday 02 February 2013 08:00:54 Padma Venkat wrote: > >> > The result of this looks good, but I fear that changing the filter function >> > like this wil break all drivers that currently use the plat-samsung/dma-ops.c >> > code. For migration purposes, I think the best way is to change >> > samsung_dmadev_request() to match the new filter_param format. >> > >> > After that is done, you can migrate all the drivers using samsung_dma_get_ops >> > over to the new dma_request_slave_channel interface without breaking >> > anything when only part of the series is applied. >> > >> > Arnd >> >> Please check the below link where I made the dma request compatible to >> both DT and non-DT >> >> http://git.kernel.org/?p=linux/kernel/git/broonie/sound.git;a=commit;h=e7ba5f1d0f6292e1b99c63cc4bb74c70232e9065 >> http://git.kernel.org/?p=linux/kernel/git/broonie/sound.git;a=commit;h=b5be04d35dbb2e00ab27a97bfd26e17019e857ef >> >> Please let me know if any changes required. >> > > Those two changes by themselves still look ok, I think but you > still break the non-DT case in this 4/4 patch by changing the > pl330_filter function in an incompatible way. You will still > have to either change the filter_param argument in the > samsung_dmadev_request() function, or provide separate filter > functions, one to be used by samsung_dmadev_request and > one for the pl330_xlate function. I missed out to delete this part. Thanks for your point. I will send another patch. > > In the long run, I think it would be better to move the slave > drivers away from the samsung_dma wrappers and use > dma_request_slave_channel directly, but that is an independent > discussion. > > Arnd Regards Padma -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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