From: Lee Jones <lee.jones@linaro.org>
To: Johan Hovold <johan@kernel.org>
Cc: Octavian Purdila <octavian.purdila@intel.com>,
gregkh@linuxfoundation.org, linus.walleij@linaro.org,
gnurou@gmail.com, wsa@the-dreams.de, sameo@linux.intel.com,
arnd@arndb.de, daniel.baluta@intel.com,
laurentiu.palcu@intel.com, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
linux-i2c@vger.kernel.org
Subject: Re: [PATCH v4 1/3] mfd: add support for Diolan DLN-2 devices
Date: Wed, 17 Sep 2014 08:46:53 -0700 [thread overview]
Message-ID: <20140917154653.GF30918@lee--X1> (raw)
In-Reply-To: <20140917091001.GF20727@localhost>
On Wed, 17 Sep 2014, Johan Hovold wrote:
> On Tue, Sep 09, 2014 at 10:24:44PM +0300, Octavian Purdila wrote:
> > This patch implements the USB part of the Diolan USB-I2C/SPI/GPIO
> > Master Adapter DLN-2. Details about the device can be found here:
> >
> > https://www.diolan.com/i2c/i2c_interface.html.
> >
> > Information about the USB protocol can be found in the Programmer's
> > Reference Manual [1], see section 1.7.
> >
> > Because the hardware has a single transmit endpoint and a single
> > receive endpoint the communication between the various DLN2 drivers
> > and the hardware will be muxed/demuxed by this driver.
> >
> > Each DLN2 module will be identified by the handle field within the DLN2
> > message header. If a DLN2 module issues multiple commands in parallel
> > they will be identified by the echo counter field in the message header.
> >
> > The DLN2 modules can use the dln2_transfer() function to issue a
> > command and wait for its response. They can also register a callback
> > that is going to be called when a specific event id is generated by
> > the device (e.g. GPIO interrupts). The device uses handle 0 for
> > sending events.
> >
> > [1] https://www.diolan.com/downloads/dln-api-manual.pdf
> >
> > Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
> > ---
> > drivers/mfd/Kconfig | 9 +
> > drivers/mfd/Makefile | 1 +
> > drivers/mfd/dln2.c | 681 +++++++++++++++++++++++++++++++++++++++++++++++
> > include/linux/mfd/dln2.h | 71 +++++
> > 4 files changed, 762 insertions(+)
> > create mode 100644 drivers/mfd/dln2.c
> > create mode 100644 include/linux/mfd/dln2.h
[...]
> Unless anyone suggests otherwise (e.g. to stick with auto id), I'll add
> a helper function for this and fix up those two drivers.
Appreciated.
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2014-09-17 15:47 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-09 19:24 [PATCH v4 0/3] mfd: add support for Diolan DLN-2 Octavian Purdila
2014-09-09 19:24 ` [PATCH v4 1/3] mfd: add support for Diolan DLN-2 devices Octavian Purdila
2014-09-16 23:21 ` Lee Jones
2014-09-17 7:25 ` Octavian Purdila
2014-09-17 7:38 ` Johan Hovold
2014-09-17 15:56 ` Lee Jones
2014-09-17 9:10 ` Johan Hovold
2014-09-17 15:46 ` Lee Jones [this message]
2014-09-18 11:31 ` Johan Hovold
2014-09-18 14:21 ` Johan Hovold
2014-09-09 19:24 ` [PATCH v4 2/3] i2c: add support for Diolan DLN-2 USB-I2C adapter Octavian Purdila
2014-09-17 9:44 ` Johan Hovold
2014-09-17 10:07 ` Octavian Purdila
2014-09-18 8:19 ` Johan Hovold
2014-09-18 8:49 ` Octavian Purdila
2014-09-18 9:13 ` Johan Hovold
2014-09-09 19:24 ` [PATCH v4 3/3] gpio: add support for the Diolan DLN-2 USB GPIO driver Octavian Purdila
2014-09-18 10:54 ` Johan Hovold
2014-09-18 12:43 ` Octavian Purdila
2014-09-18 12:46 ` Johan Hovold
2014-09-18 15:54 ` Octavian Purdila
2014-09-19 7:11 ` Johan Hovold
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