From: viresh.kumar@st.com (Viresh Kumar)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2 1/1] dmaengine/amba-pl08x: Add support for s3c64xx DMAC
Date: Wed, 28 Sep 2011 15:24:41 +0530 [thread overview]
Message-ID: <4E82EEE1.3020706@st.com> (raw)
In-Reply-To: <CAGOxZ53qZy+VUM65oK68W088QR=RgQ=cNxOCbO7_WESJesJaVQ@mail.gmail.com>
On 9/28/2011 2:20 PM, Alim Akhtar wrote:
> The main difference between Primecell PL080 and samsung variant is in
> LLI control register bit [0:11] is reserved in case of samsung pl080
> and one extra register is add to hold the transfer size at offset
> 0x10. The purpose of cctl1 is store the transfer_size.
So, actually you need to modify pl08x_fill_lli_for_desc() and
pl08x_cctl_bits() routines.
Updating cctl1 on the last lli will not solve your purpose,
and transfers needing more than one lli will fail.
BTW, did you try testing your patch for more than one LLI.
--
viresh
next prev parent reply other threads:[~2011-09-28 9:54 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-28 5:50 [PATCH V2 0/1] dmaengine/amba-pl08x: Add support for s3c64xx DMAC Alim Akhtar
2011-09-28 5:50 ` [PATCH V2 1/1] " Alim Akhtar
2011-09-28 7:45 ` Viresh Kumar
2011-09-28 8:50 ` Alim Akhtar
2011-09-28 9:54 ` Viresh Kumar [this message]
2011-09-28 11:54 ` Alim Akhtar
2011-09-29 4:22 ` Viresh Kumar
2011-09-28 8:01 ` Linus Walleij
2011-09-28 8:59 ` Alim Akhtar
2011-12-07 23:43 ` [PATCH V2 0/1] " Linus Walleij
2011-12-08 1:03 ` Alim Akhtar
2012-04-09 20:50 ` Linus Walleij
2012-05-28 4:41 ` Linus Walleij
2012-05-28 7:36 ` Russell King - ARM Linux
2012-05-29 9:23 ` Alim Akhtar
2012-07-09 20:47 ` Linus Walleij
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4E82EEE1.3020706@st.com \
--to=viresh.kumar@st.com \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).