From: Mike Frysinger <vapier.adi@gmail.com>
To: "Daniel Glöckner" <dg@emlix.com>
Cc: Oskar Schirmer <os@emlix.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
Oliver Schneidewind <osw@emlix.com>,
Michael Hennerich <michael.hennerich@analog.com>
Subject: Re: [PATCH] ad7877: fix spi word size to 16 bit
Date: Fri, 7 May 2010 14:23:07 -0400 [thread overview]
Message-ID: <h2l8bd0f97a1005071123u782bab2doee5c122dbd4c8642@mail.gmail.com> (raw)
In-Reply-To: <4BE3E02E.1090500@emlix.com>
On Fri, May 7, 2010 at 05:41, Daniel Glöckner wrote:
> On 05/06/2010 08:26 PM, Mike Frysinger wrote:
>> i think it'd be a better idea to do something like:
>> if (spi->bits_per_word != 16) {
>> if (spi->bits_per_word) {
>> dev_err(&spi->dev, "Invalid SPI settings; bits_per_word must be 16\n");
>> return -EINVAL;
>> }
>> spi->bits_per_word = 16;
>> spi_setup(spi);
>> }
>
> There is no way to set bits_per_word using struct spi_board_info. The
> description of that structure in spi.h explicitly lists the wordsize as
> one of the parameters drivers should set themself in probe().
>
> Only struct bfin5xx_spi_chip allows to set this value in the board code.
an obvious shortcoming in the SPI framework that should be fixed, but
that doesnt make any difference to the above code now does it ? it'll
operate correctly regardless of the SPI bus master.
-mike
WARNING: multiple messages have this Message-ID (diff)
From: Mike Frysinger <vapier.adi@gmail.com>
To: "Daniel Glöckner" <dg@emlix.com>
Cc: Oskar Schirmer <os@emlix.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
Oliver Schneidewind <osw@emlix.com>,
Michael Hennerich <michael.hennerich@analog.com>
Subject: Re: [PATCH] ad7877: fix spi word size to 16 bit
Date: Fri, 7 May 2010 14:23:07 -0400 [thread overview]
Message-ID: <h2l8bd0f97a1005071123u782bab2doee5c122dbd4c8642@mail.gmail.com> (raw)
In-Reply-To: <4BE3E02E.1090500@emlix.com>
On Fri, May 7, 2010 at 05:41, Daniel Glöckner wrote:
> On 05/06/2010 08:26 PM, Mike Frysinger wrote:
>> i think it'd be a better idea to do something like:
>> if (spi->bits_per_word != 16) {
>> if (spi->bits_per_word) {
>> dev_err(&spi->dev, "Invalid SPI settings; bits_per_word must be 16\n");
>> return -EINVAL;
>> }
>> spi->bits_per_word = 16;
>> spi_setup(spi);
>> }
>
> There is no way to set bits_per_word using struct spi_board_info. The
> description of that structure in spi.h explicitly lists the wordsize as
> one of the parameters drivers should set themself in probe().
>
> Only struct bfin5xx_spi_chip allows to set this value in the board code.
an obvious shortcoming in the SPI framework that should be fixed, but
that doesnt make any difference to the above code now does it ? it'll
operate correctly regardless of the SPI bus master.
-mike
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next prev parent reply other threads:[~2010-05-07 18:23 UTC|newest]
Thread overview: 124+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-06 10:37 [PATCH] ad7877: fix spi word size to 16 bit Oskar Schirmer
2010-05-06 10:37 ` Oskar Schirmer
2010-05-06 10:37 ` [PATCH] ad7877: keep dma rx buffers in seperate cache lines Oskar Schirmer
2010-05-06 18:46 ` Mike Frysinger
2010-05-06 18:46 ` Mike Frysinger
2010-05-07 10:15 ` Oskar Schirmer
2010-05-07 10:15 ` Oskar Schirmer
2010-05-07 18:28 ` Mike Frysinger
2010-05-07 18:28 ` Mike Frysinger
2010-05-08 22:32 ` Johannes Weiner
2010-05-08 22:32 ` Johannes Weiner
2010-05-09 4:45 ` Mike Frysinger
2010-05-09 4:45 ` Mike Frysinger
2010-05-09 8:50 ` Oskar Schirmer
2010-05-09 8:50 ` Oskar Schirmer
2010-05-07 12:07 ` Johannes Weiner
2010-05-10 10:34 ` [PATCH v2] " Oskar Schirmer
2010-05-10 10:34 ` Oskar Schirmer
2010-05-10 10:42 ` [PATCH v3] " Oskar Schirmer
2010-05-10 10:42 ` Oskar Schirmer
2010-05-10 16:39 ` Mike Frysinger
2010-05-10 20:54 ` Dmitry Torokhov
2010-05-10 21:22 ` Andrew Morton
2010-05-10 21:27 ` Mike Frysinger
2010-05-11 6:05 ` Dmitry Torokhov
2010-05-11 6:05 ` Dmitry Torokhov
2010-05-11 6:11 ` Mike Frysinger
2010-05-11 6:11 ` Mike Frysinger
2010-05-11 3:20 ` Andrew Morton
2010-05-11 6:21 ` Dmitry Torokhov
2010-05-11 6:23 ` Mike Frysinger
2010-05-11 6:23 ` Mike Frysinger
2010-05-11 6:33 ` Dmitry Torokhov
2010-05-11 6:33 ` Dmitry Torokhov
2010-05-11 6:37 ` Mike Frysinger
2010-05-11 6:42 ` Pekka Enberg
2010-05-11 13:57 ` Christoph Lameter
2010-05-11 16:52 ` Dmitry Torokhov
2010-05-11 17:31 ` Mike Frysinger
2010-05-11 18:59 ` Pekka Enberg
2010-05-11 20:03 ` Mike Frysinger
2010-05-11 20:07 ` Matt Mackall
2010-05-11 20:10 ` Mike Frysinger
2010-05-11 20:10 ` Mike Frysinger
2010-05-11 20:21 ` Christoph Lameter
2010-05-11 20:34 ` Mike Frysinger
2010-05-11 20:38 ` Pekka Enberg
2010-05-11 20:43 ` Mike Frysinger
2010-05-11 20:43 ` Mike Frysinger
2010-05-11 20:47 ` Pekka Enberg
2010-05-13 6:21 ` Paul Mundt
2010-05-11 20:46 ` Christoph Lameter
2010-05-11 20:54 ` Mike Frysinger
2010-05-11 20:54 ` Mike Frysinger
2010-05-11 21:01 ` Pekka Enberg
2010-05-11 21:11 ` Mike Frysinger
2010-05-11 21:11 ` Mike Frysinger
2010-05-12 1:58 ` FUJITA Tomonori
[not found] ` <20100511214836.GH1726@emlix.com>
2010-05-11 21:53 ` Dmitry Torokhov
2010-05-11 22:39 ` Mike Frysinger
2010-05-11 22:39 ` Mike Frysinger
2010-05-12 2:07 ` [LKML] " Marc Gauthier
2010-05-12 3:03 ` Nick Piggin
2010-05-12 3:23 ` FUJITA Tomonori
2010-05-12 4:35 ` Mike Frysinger
2010-05-12 4:35 ` Mike Frysinger
2010-05-12 5:28 ` FUJITA Tomonori
2010-05-12 5:28 ` FUJITA Tomonori
2010-05-12 14:37 ` Mike Frysinger
2010-05-12 14:37 ` Mike Frysinger
2010-05-12 18:11 ` Dmitry Torokhov
2010-05-12 18:28 ` Mike Frysinger
2010-05-12 18:28 ` Mike Frysinger
2010-05-12 10:36 ` Johannes Weiner
2010-05-12 12:35 ` Marc Gauthier
2010-05-12 14:36 ` Mike Frysinger
2010-05-12 14:36 ` Mike Frysinger
2010-05-19 12:48 ` David Woodhouse
2010-05-19 13:07 ` Nick Piggin
2010-05-19 13:17 ` David Woodhouse
2010-05-19 13:36 ` Nick Piggin
2010-05-19 13:44 ` Johannes Weiner
2010-05-19 13:52 ` Nick Piggin
2010-05-19 14:38 ` FUJITA Tomonori
2010-05-19 14:58 ` David Woodhouse
2010-05-20 4:42 ` FUJITA Tomonori
2010-05-19 16:37 ` Dmitry Torokhov
2010-05-19 15:00 ` Johannes Weiner
2010-05-17 6:12 ` Michal Simek
2010-05-19 13:00 ` David Woodhouse
2010-05-11 22:37 ` Alan Cox
2010-05-11 20:22 ` Pekka Enberg
2010-05-11 14:12 ` Oskar Schirmer
2010-05-11 14:12 ` Oskar Schirmer
2010-05-06 11:18 ` [PATCH] ad7877: fix spi word size to 16 bit Hennerich, Michael
2010-05-06 11:18 ` Hennerich, Michael
2010-05-06 18:26 ` Mike Frysinger
2010-05-06 18:26 ` Mike Frysinger
2010-05-07 9:41 ` Daniel Glöckner
2010-05-07 9:41 ` Daniel Glöckner
2010-05-07 18:23 ` Mike Frysinger [this message]
2010-05-07 18:23 ` Mike Frysinger
2010-05-13 7:53 ` Dmitry Torokhov
2010-05-13 7:53 ` Dmitry Torokhov
2010-05-15 18:15 ` Oskar Schirmer
2010-05-15 18:15 ` Oskar Schirmer
2010-05-16 19:25 ` Mike Frysinger
2010-05-16 19:25 ` Mike Frysinger
2010-05-17 7:29 ` Oskar Schirmer
2010-05-17 7:29 ` Oskar Schirmer
2010-05-17 8:14 ` Hennerich, Michael
2010-05-17 8:14 ` Hennerich, Michael
2010-05-17 8:41 ` Oskar Schirmer
2010-05-17 8:41 ` Oskar Schirmer
2010-05-17 23:49 ` Mike Frysinger
2010-05-17 23:49 ` Mike Frysinger
2010-05-18 0:18 ` H Hartley Sweeten
2010-05-18 0:18 ` H Hartley Sweeten
2010-05-18 8:32 ` Oskar Schirmer
2010-05-18 8:32 ` Oskar Schirmer
2010-05-18 9:37 ` Daniel Glöckner
2010-05-18 9:37 ` Daniel Glöckner
2010-05-18 8:34 ` [PATCH v2] " Oskar Schirmer
2010-05-18 8:34 ` Oskar Schirmer
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