linux-kernel - Re: [PATCH 10/13] dmaengine: ti-dma-crossbar: Add support for crossbar on AM33xx/AM43xx

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Message-ID: <20151014144814.GW27370@localhost>
Date:	Wed, 14 Oct 2015 20:18:14 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Peter Ujfalusi <peter.ujfalusi@...com>
Cc:	nsekhar@...com, linux@....linux.org.uk, olof@...om.net,
	arnd@...db.de, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
	dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
	tony@...mide.com, r.schwebel@...gutronix.de
Subject: Re: [PATCH 10/13] dmaengine: ti-dma-crossbar: Add support for
 crossbar on AM33xx/AM43xx

On Wed, Oct 14, 2015 at 04:12:21PM +0300, Peter Ujfalusi wrote:
> The DMA event crossbar on AM33xx/AM43xx is different from the one found in
> DRA7x family.
> Instead of a single event crossbar it has 64 identical mux attached to each
> eDMA event line. When the 0 event mux is selected, the default mapped event
> is going to be routed to the corresponding eDMA event line. If different
> mux is selected, then the selected event is going to be routed to the given
> eDMA event.

Why is crossbar patch in edma series?

> +static void ti_am335x_xbar_free(struct device *dev, void *route_data)
> +{
> +	struct ti_am335x_xbar_data *xbar = dev_get_drvdata(dev);
> +	struct ti_am335x_xbar_map *map = route_data;
> +
> +	dev_err(dev, "Unmapping XBAR event %u on channel %u\n",
> +		map->mux_val, map->dma_line);

Err ?

-- 
~Vinod
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