On Tue, 2012-09-18 at 14:11 +0800, Hein Tibosch wrote: > On 9/17/2012 3:39 PM, Andy Shevchenko wrote: > > Here is a patchset that allows to adapt the driver to the hardware > > configuration during probe time. The hardware should have the specific > > optional > > parameters enabled. Otherwise the driver will consider values stored in the > > platform data. > > > > Additionally it brings support of the software LLP transfers. It means that > > normal linked list transfer is substituted by set of single block transfers > > transparently to the user. > > > > Comments are welcome. > > > > Andy Shevchenko (7): > > dw_dmac: mark dwc_dump_chan_regs as inline > > dw_dmac: fill optional encoded parameters in register structure > > dw_dmac: get number of channels from hardware if possible > > dw_dmac: autoconfigure block_size or use platform data > > dw_dmac: autoconfigure data_width or get it via platform data > > dw_dmac: check if controller supports LLP > > dw_dmac: introduce software emulation of LLP transfers > > > > arch/arm/mach-spear13xx/spear13xx.c | 3 + > > arch/avr32/mach-at32ap/at32ap700x.c | 3 + > > drivers/dma/dw_dmac.c | 207 > > +++++++++++++++++++++++++++++------ > > drivers/dma/dw_dmac_regs.h | 48 ++++++++ > > include/linux/dw_dmac.h | 7 ++ > > 5 files changed, 235 insertions(+), 33 deletions(-) > Andy, > > The (embedded) dw dma on the AP7000 indeed does not support auto > configuration (the register reads as zero) Nice to have the test report. I have no devices around without auto configuration block.
> and so it needs the platform data. > > I tested the driver on AVR32 with the atmel-mci driver and it all > worked well. > I also tested the new software emulation of LLP mode by setting > nollp for each channel to true. That also worked as expected. Thanks! > Tested-by: Hein Tibosch <[email protected]> -- Andy Shevchenko <[email protected]> Intel Finland Oy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
