From: martinwguy@gmail.com (Martin Guy)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] spi: implemented driver for Cirrus EP93xx SPI controller
Date: Thu, 1 Apr 2010 01:15:20 +0100 [thread overview]
Message-ID: <s2n56d259a01003311715ke5b93a96v9d453ec32f08ec29@mail.gmail.com> (raw)
In-Reply-To: <20100325184316.GB20512@gw.healthdatacare.com>
On 3/25/10, Mika Westerberg <mika.westerberg@iki.fi> wrote:
> > > This patch adds an SPI master driver for the Cirrus EP93xx SPI controller found
> > > in EP93xx chips (EP9301, EP9302, EP9307, EP9312 and EP9315).
> > >
> > > Driver currently supports only interrupt driven mode but in future we may add
> > > polling mode support as well.
I've been staring more at this again and it looks (2 clock
strangenesses and extensive control reg setting apart) like good code.
I have another question: like the Cirrus driver, this takes 100% CPU
doing busy wait for the current transfer to complete.
Given that this driver is interrupt-based, is there any reason why it
can't do something else in the meanwhile?
Not that that's a reason not to include it in 2.6.35 - it works well
and we can think whether to make it more efficient in N+1...
M
next prev parent reply other threads:[~2010-04-01 0:15 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-18 16:59 [PATCH v2 0/3] spi: driver for Cirrus EP93xx SPI controller Mika Westerberg
2010-03-18 17:00 ` [PATCH v2 1/3] spi: implemented " Mika Westerberg
2010-03-18 17:00 ` [PATCH v2 2/3] ep93xx: added chip revision reading function Mika Westerberg
2010-03-18 17:00 ` [PATCH v2 3/3] ep93xx: SPI driver platform support code Mika Westerberg
2010-03-18 17:27 ` [spi-devel-general] [PATCH v2 2/3] ep93xx: added chip revision reading function H Hartley Sweeten
2010-03-25 9:06 ` Mika Westerberg
2010-03-25 17:20 ` H Hartley Sweeten
2010-03-26 15:40 ` Martin Guy
2010-03-20 18:07 ` Martin Guy
2010-03-20 18:25 ` Daniel Mack
2010-03-20 18:40 ` Martin Guy
2010-03-20 19:31 ` H Hartley Sweeten
2010-03-20 19:48 ` Martin Guy
2010-03-20 18:31 ` Mika Westerberg
2010-03-20 19:42 ` H Hartley Sweeten
2010-03-21 18:45 ` Mika Westerberg
2010-03-25 13:49 ` [PATCH v2 1/3] spi: implemented driver for Cirrus EP93xx SPI controller Martin Guy
2010-03-25 18:43 ` Mika Westerberg
2010-04-01 0:15 ` Martin Guy [this message]
2010-04-01 3:00 ` Ryan Mallon
2010-04-01 6:26 ` Mika Westerberg
2010-04-06 5:44 ` Mika Westerberg
2010-04-06 12:50 ` Martin Guy
2010-04-06 18:18 ` Mika Westerberg
2010-04-06 21:28 ` Martin Guy
2010-04-09 17:56 ` Martin Guy
2010-04-09 18:08 ` Martin Guy
2010-04-10 15:54 ` Mika Westerberg
2010-04-11 14:24 ` Martin Guy
2010-04-12 10:03 ` Martin Guy
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