linux-kernel - Re: [PATCH RFC v2 1/5] dma: mpc512x: re-order mpc8308 specific instructions

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Date:	Mon, 12 Aug 2013 17:38:21 +0400
From:	Alexander Popov <a13xp0p0v88@...il.com>
To:	Gerhard Sittig <gsi@...x.de>
Cc:	linuxppc-dev@...ts.ozlabs.org, Dan Williams <djbw@...com>,
	Vinod Koul <vinod.koul@...el.com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Arnd Bergmann <arnd@...db.de>,
	Anatolij Gustschin <agust@...x.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC v2 1/5] dma: mpc512x: re-order mpc8308 specific instructions

Hello everyone!

2013/7/14 Gerhard Sittig <gsi@...x.de>:
> @@ -50,9 +50,23 @@
>  #define MPC_DMA_DESCRIPTORS    64
>
>  /* Macro definitions */
> -#define MPC_DMA_CHANNELS       64
>  #define MPC_DMA_TCD_OFFSET     0x1000
>
> +/*
> + * the maximum channel count, and specific channels which need
> + * special processing, for individual hardware variants
> + *
> + * and the maximum channel count over all supported controllers,
> + * used for data structure sizes
> + */
> +enum mpc8308_dmachan_id_t {
> +       MPC8308_DMACHAN_MAX = 16,
> +};
> +enum mpc512x_dmachan_id_t {
> +       MPC512x_DMACHAN_MAX = 64,
> +};
> +#define MPC_DMA_CHANNELS       64
> +

I offer to use #define instead of enum here
since individual channels don't require special handling.

Best regards,
Alexander.
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