linux-kernel - Re: [PATCH 2/2] dma: add Qualcomm Technologies HIDMA channel driver

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Message-ID: <56367433.60806@codeaurora.org>
Date:	Sun, 1 Nov 2015 14:21:07 -0600
From:	Timur Tabi <timur@...eaurora.org>
To:	Sinan Kaya <okaya@...eaurora.org>, Arnd Bergmann <arnd@...db.de>
Cc:	dmaengine@...r.kernel.org, cov@...eaurora.org, jcm@...hat.com,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] dma: add Qualcomm Technologies HIDMA channel driver

Sinan Kaya wrote:
> However, after issuing the command; I still need to wait some amount of
> time until hardware acknowledges the commands like reset/enable/disable.
> These are relatively faster operations happening in microseconds. That's
> why, I have mdelay there.

Can you use readl_poll_timeout()?

-- 
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the
Code Aurora Forum, hosted by The Linux Foundation.
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