From: vinod.koul@intel.com (Vinod Koul)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] dma: sun4i: expose block size and wait cycle configuration to DMA users
Date: Mon, 7 Mar 2016 20:24:29 +0530 [thread overview]
Message-ID: <20160307145429.GG11154@localhost> (raw)
In-Reply-To: <1457344771-12946-1-git-send-email-boris.brezillon@free-electrons.com>
On Mon, Mar 07, 2016 at 10:59:31AM +0100, Boris Brezillon wrote:
> +/* Dedicated DMA parameter register layout */
> +#define SUN4I_DDMA_PARA_DST_DATA_BLK_SIZE(n) (((n) - 1) << 24)
> +#define SUN4I_DDMA_PARA_DST_WAIT_CYCLES(n) (((n) - 1) << 16)
> +#define SUN4I_DDMA_PARA_SRC_DATA_BLK_SIZE(n) (((n) - 1) << 8)
> +#define SUN4I_DDMA_PARA_SRC_WAIT_CYCLES(n) (((n) - 1) << 0)
> +
> +/**
> + * struct sun4i_dma_chan_config - DMA channel config
> + *
> + * @para: contains information about block size and time before checking
> + * DRQ line. This is device specific and only applicable to dedicated
> + * DMA channels
What information, can you elobrate.. And why can't you use existing
dma_slave_config for this?
> + */
> +struct sun4i_dma_chan_config {
> + u32 para;
> +};
> +
> +int sun4i_dma_set_chan_config(struct dma_chan *dchan,
> + const struct sun4i_dma_chan_config *cfg);
> +
> +#endif /* _SUN4I_DMA_H */
--
~Vinod
next prev parent reply other threads:[~2016-03-07 14:54 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-07 9:59 [PATCH] dma: sun4i: expose block size and wait cycle configuration to DMA users Boris Brezillon
2016-03-07 14:54 ` Vinod Koul [this message]
2016-03-07 15:08 ` Boris Brezillon
2016-03-07 20:30 ` Maxime Ripard
2016-03-08 2:55 ` Vinod Koul
2016-03-08 2:59 ` Vinod Koul
2016-03-08 7:51 ` Maxime Ripard
2016-03-08 8:42 ` [linux-sunxi] " Hans de Goede
2016-03-08 10:05 ` Vinod Koul
2016-03-09 10:58 ` Maxime Ripard
2016-03-08 8:46 ` Boris Brezillon
2016-03-08 9:10 ` [linux-sunxi] " Priit Laes
2016-03-08 10:04 ` Vinod Koul
2016-03-09 10:08 ` [linux-sunxi] " LABBE Corentin
2016-03-08 9:59 ` Vinod Koul
2016-03-09 10:14 ` Boris Brezillon
2016-03-11 6:24 ` Vinod Koul
2016-03-11 9:40 ` Boris Brezillon
2016-03-11 10:06 ` Vinod Koul
2016-03-11 10:26 ` Boris Brezillon
2016-03-11 11:21 ` Vinod Koul
2016-03-09 11:06 ` Boris Brezillon
2016-03-11 6:26 ` Vinod Koul
2016-03-11 9:45 ` Boris Brezillon
2016-03-11 10:09 ` Vinod Koul
2016-03-11 10:55 ` Maxime Ripard
2016-03-11 11:18 ` Vinod Koul
2016-03-14 11:46 ` Maxime Ripard
2016-03-16 3:22 ` Vinod Koul
2016-03-07 15:30 ` [linux-sunxi] " Priit Laes
2016-03-07 15:47 ` Boris Brezillon
2016-03-07 17:15 ` Emilio López
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