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Date: Tue, 9 Sep 2014 22:24:43 +0300
From: Octavian Purdila <octavian.purdila@...el.com>
To: gregkh@...uxfoundation.org, linus.walleij@...aro.org,
gnurou@...il.com, wsa@...-dreams.de, sameo@...ux.intel.com,
lee.jones@...aro.org
Cc: arnd@...db.de, johan@...nel.org, daniel.baluta@...el.com,
laurentiu.palcu@...el.com, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
linux-i2c@...r.kernel.org,
Octavian Purdila <octavian.purdila@...el.com>
Subject: [PATCH v4 0/3] mfd: add support for Diolan DLN-2
This patch series adds support for Diolan USB-I2C/GPIO Master Adapter
DLN-2. Details about device can be found here:
https://www.diolan.com/i2c/i2c_interface.html.
Changes since v3:
* Mostly addressing latest review comments from Johan
* MFD driver: more message size checks for responses, switched to
using unsigned for buffer sizes and use const void * for output
buffer for the dln2_transfer() API, more codying style cleanups,
renamed DLN2_HANDLE_GPIO_EVENT to DLN2_HANDLE_EVENT
* MFD driver: turns out the RX buf size was too low for certain I2C
drivers (I was seeing request up to 257 bytes), so increase it from
64 to 512
* GPIO driver: revert the retry chip remove change, as there are
still issues if the gpio if exported to sysfs; coding style
cleanups, correctly clamp no pin numbers to 32, use devm_kzalloc
and simplify the error path in probe, cache pin direction to save
one transfer when reading the pin value
* I2C driver: add an i2c port parameter in the platform data
(although only one port seems to be supported), make frequency a
sysfs attribute instead of a module paramter, coding style
cleanups, use devm_kzalloc and simplify the error path in probe,
move the I2C buffers from the stack to the dln2_i2c structure (it
is enough as we can have only one transfer at a time on the i2c
adapter)
Changes since v2:
* MFD driver: fix a few obsolete comments for the DLN2 I/O API
* GPIO driver: retry the chip remove call if -EBUSY is returned, see
the comments in dln2_do_remove for more details; also removed a
redundant !dln2->pdev check from dln2_irq_event - we do it in
dln2_transfer already
* I2C driver: add I2C_FUNC_SMBUS_I2C_BLOCK support
Changes since v1:
* rewrite the drivers as an MFD
* rewrite the irq part of the gpio driver to use GPIOLIB_IRQCHIP
* cleanup the I/O interface
* various fixes and cleanps: check received message sizes before
parsing, error handling for usb_submit_urb, check URB status, use
single bit manipulation functions instead of bitmap_*, move
GFP_KERNEL URB submit away from under lock
Daniel Baluta (1):
gpio: add support for the Diolan DLN-2 USB GPIO driver
Laurentiu Palcu (1):
i2c: add support for Diolan DLN-2 USB-I2C adapter
Octavian Purdila (1):
mfd: add support for Diolan DLN-2 devices
drivers/gpio/Kconfig | 12 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-dln2.c | 529 ++++++++++++++++++++++++++++++++
drivers/i2c/busses/Kconfig | 10 +
drivers/i2c/busses/Makefile | 1 +
drivers/i2c/busses/i2c-dln2.c | 390 ++++++++++++++++++++++++
drivers/mfd/Kconfig | 9 +
drivers/mfd/Makefile | 1 +
drivers/mfd/dln2.c | 681 ++++++++++++++++++++++++++++++++++++++++++
include/linux/mfd/dln2.h | 71 +++++
10 files changed, 1705 insertions(+)
create mode 100644 drivers/gpio/gpio-dln2.c
create mode 100644 drivers/i2c/busses/i2c-dln2.c
create mode 100644 drivers/mfd/dln2.c
create mode 100644 include/linux/mfd/dln2.h
--
1.9.1
--
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