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* [PATCHv3 0/3] Add support for the Nuvoton NAU7802 ADC to the cfa10049
@ 2013-06-24 17:24 Alexandre Belloni
  2013-06-24 17:24 ` [PATCHv3 1/3] iio: Add Nuvoton NAU7802 ADC driver Alexandre Belloni
                   ` (2 more replies)
  0 siblings, 3 replies; 17+ messages in thread
From: Alexandre Belloni @ 2013-06-24 17:24 UTC (permalink / raw)
  To: Shawn Guo, Jonathan Cameron
  Cc: jimwall, brian-ZKiFAVwZFM2FeswfMrDH8w, Maxime Ripard,
	linux-iio-u79uwXL29TY76Z2rM5mHXA,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA,
	linux-doc-u79uwXL29TY76Z2rM5mHXA,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
	devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ, Rob Landley,
	Rob Herring, Grant Likely, Alexandre Belloni

Hi,

This is v3 of the patchset that adds support for the 3 Nuvoton NAU7802 ADCs
present on the CFA-10049 board from Crystalfontz. The first patch adds the
driver, the next ones are adding them in the DT after switching the second i2c
bus to bitbanging following a lot of timeout issues we have on that bus.

Changes in v3:
 - removed the min_conversion knob in sysfs, it is now hardcoded to 6
 - added error checking in probe
 - corrected error checking
 - corrected possibly uninitialized vldo
 - used ARRAY_SIZE(nau7802_chan_array) instead of 2
 - added that vldo refers to the internal voltage regulator

Changes in v2:
 - channels are now statically allocated
 - no wrappers around i2c functions
 - sampling_freq is a shared attribute
 - setting gain is done through scale
 - cosmetics changes (s/idev/indio_dev/, blank lines before returns)
 - use of sign_extend32 to extend the sign
 - reading scale now returns IIO_VAL_FRACTIONAL_LOG2
 - no dt lookup for interrupts, this is done in of_i2c.c but that was mask due
 to a bug.

what I didn't address is setting the external reference voltage through a fixed
regulator and I kept the vldo attribute to set the internal voltage reference in
the DT as Jonathan seemed to be ok with that. If anybody is using a nau7802 with
an external reference, it will still be time to add the fixed regulator. It
shouldn't be difficult but I don't have any hardware to test.

Regards,

Alexandre Belloni (1):
  iio: Add Nuvoton NAU7802 ADC driver

Maxime Ripard (2):
  ARM: mxs: cfa10049: Switch bus i2c1 to bitbanging
  ARM: mxs: cfa10049: Add NAU7802 ADCs to the device tree

 .../bindings/iio/adc/nuvoton-nau7802.txt           |  18 +
 arch/arm/boot/dts/imx28-cfa10049.dts               | 126 +++--
 drivers/iio/adc/Kconfig                            |   9 +
 drivers/iio/adc/Makefile                           |   1 +
 drivers/iio/adc/nau7802.c                          | 576 +++++++++++++++++++++
 5 files changed, 687 insertions(+), 43 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/nuvoton-nau7802.txt
 create mode 100644 drivers/iio/adc/nau7802.c

-- 
1.8.1.2

^ permalink raw reply	[flat|nested] 17+ messages in thread

end of thread, other threads:[~2013-07-09 17:43 UTC | newest]

Thread overview: 17+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-06-24 17:24 [PATCHv3 0/3] Add support for the Nuvoton NAU7802 ADC to the cfa10049 Alexandre Belloni
2013-06-24 17:24 ` [PATCHv3 1/3] iio: Add Nuvoton NAU7802 ADC driver Alexandre Belloni
2013-07-04  9:08   ` Lars-Peter Clausen
     [not found]     ` <51D53B72.6020309-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
2013-07-06 10:24       ` Jonathan Cameron
2013-07-09 14:04         ` Alexandre Belloni
2013-07-09 17:43           ` Jonathan Cameron
2013-06-24 17:24 ` [PATCHv3 2/3] ARM: mxs: cfa10049: Switch bus i2c1 to bitbanging Alexandre Belloni
2013-07-02  2:45   ` Fabio Estevam
2013-07-02 11:35     ` Alexandre Belloni
2013-07-02 11:45       ` Fabio Estevam
2013-07-02 11:50         ` Alexandre Belloni
2013-07-02 14:06           ` Alexandre Belloni
2013-07-02 16:33             ` Marek Vasut
     [not found]               ` <201307021833.04282.marex-ynQEQJNshbs@public.gmane.org>
2013-07-02 17:15                 ` Alexandre Belloni
     [not found]   ` <1372094699-3832-3-git-send-email-alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2013-07-06 10:26     ` Jonathan Cameron
     [not found]       ` <51D7F0E6.2000008-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2013-07-07  8:47         ` Alexandre Belloni
2013-06-24 17:24 ` [PATCHv3 3/3] ARM: mxs: cfa10049: Add NAU7802 ADCs to the device tree Alexandre Belloni

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