Re: [PATCH v7 2/3] usb: musb: Add support of CPPI 4.1 DMA controller to DA8xx

[Bin Liu <b-liu-l0cyMroinI0@public.gmane.org>]

On Wed, Mar 29, 2017 at 06:24:31PM +0200, Alexandre Bailon wrote:
> Currently, only the PIO mode is supported.
> This add support of CPPI 4.1 to DA8xx.
> As the In DA8xx the CPPI 4.1 DMA is a part of the USB.
> Create the CPPI 4.1 device as a child of USB.
> 
> Signed-off-by: Alexandre Bailon <abailon-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
> ---
>  drivers/usb/musb/Kconfig |  4 ++--
>  drivers/usb/musb/da8xx.c | 43 ++++++++++++++++++++++++++++++++++++++++++-
>  2 files changed, 44 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
> index 72a2a50..5506a9c 100644
> --- a/drivers/usb/musb/Kconfig
> +++ b/drivers/usb/musb/Kconfig
> @@ -160,8 +160,8 @@ config USB_TI_CPPI_DMA
>  	  Enable DMA transfers when TI CPPI DMA is available.
>  
>  config USB_TI_CPPI41_DMA
> -	bool 'TI CPPI 4.1 (AM335x)'
> -	depends on ARCH_OMAP && DMADEVICES
> +	bool 'TI CPPI 4.1'
> +	depends on (ARCH_OMAP || ARCH_DAVINCI_DA8XX) && DMADEVICES
>  	select TI_CPPI41

TI_CPPI41 also should depend on ARCH_DAVINCI_DA8XX due to this patch.  You
might need the following change for dma Kconfig as well.

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index d01d59812cf3..15e31bfae9f9 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -514,8 +514,8 @@ config TIMB_DMA
          Enable support for the Timberdale FPGA DMA engine.
 
 config TI_CPPI41
-       tristate "AM33xx CPPI41 DMA support"
-       depends on ARCH_OMAP
+       tristate "CPPI41 DMA support"
+       depends on ARCH_OMAP || ARCH_DAVINCI_DA8XX
        select DMA_ENGINE
        help
          The Communications Port Programming Interface (CPPI) 4.1 DMA engine

Regards,
-Bin.
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