From: Felipe Balbi <balbi@ti.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Felipe Balbi <balbi@ti.com>, <linux-usb@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <george.cherian@ti.com>,
Vinod Koul <vinod.koul@intel.com>, Dan Williams <djbw@fb.com>
Subject: Re: [PATCH 5/5] usb/musb dma: add cppi41 dma driver
Date: Fri, 9 Aug 2013 17:21:43 +0300 [thread overview]
Message-ID: <20130809142143.GN12041@radagast> (raw)
In-Reply-To: <1375471450-31154-6-git-send-email-bigeasy@linutronix.de>
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On Fri, Aug 02, 2013 at 09:24:10PM +0200, Sebastian Andrzej Siewior wrote:
> This driver is currently used by musb' cppi41 couter part. I may merge
> both dma engine user of musb at some point but not just yet.
>
> The driver seems to work in RX/TX mode in host mode, tested on mass
> storage. I increaed the size of the TX / RX transfers and waited for the
> core code to cancel a transfers and it seems to recover.
>
> v2..3:
> - use mall transfers on RX side and check data toggle.
> - use rndis mode on tx side so we haveon interrupt for 4096 transfers.
> - remove custom "transferred" hack and use dmaengine_tx_status() to
> compute the total amount of data that has been transferred.
> - cancel transfers and reclaim descriptors
>
> v1..v2:
> - RX path added
> - dma mode 0 & 1 is working
> - device tree nodes re-created.
>
> Cc: Vinod Koul <vinod.koul@intel.com>
> Cc: Dan Williams <djbw@fb.com>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Vinod, do you mind if I take this through my tree ? It's tightly related
with the rest of the series.
--
balbi
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next prev parent reply other threads:[~2013-08-09 14:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-02 19:24 am335x: support for multiple USB instances, v3 Sebastian Andrzej Siewior
2013-08-02 19:24 ` [PATCH 1/5] usb: phy: phy-generic: export init functions Sebastian Andrzej Siewior
2013-08-02 19:24 ` [PATCH 2/5] usb: phy: Add AM335x PHY driver Sebastian Andrzej Siewior
2013-08-02 19:24 ` [PATCH 3/5] usb: musb: dsps: remove the hardcoded phy pieces Sebastian Andrzej Siewior
2013-08-02 19:24 ` [PATCH 4/5] usb: musb: dsps: use proper child nodes Sebastian Andrzej Siewior
2013-08-02 19:24 ` [PATCH 5/5] usb/musb dma: add cppi41 dma driver Sebastian Andrzej Siewior
2013-08-09 14:21 ` Felipe Balbi [this message]
2013-08-26 8:45 ` am335x: support for multiple USB instances, v3 Lars Poeschel
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