On Wed, 3 Aug 2022 13:28:36 +0300
Claudiu Beznea [off-list ref] wrote:

Hi,

The following series add support for temperature sensor available on
SAMA7G5.

Temperature sensor available on SAMA7G5 provides 2 outputs VTEMP and VBG.
VTEMP is proportional to the absolute temperature voltage and VBG is a
quasi-temperature independent voltage. Both are necessary in computing
the temperature (for better accuracy). Also, for better accuracy the
following settings were imposed when measusing the temperature:
oversampling rate of 256, sampling frequency of 10MHz, a startup time of
512 ticks, MR.tracktim=0xf, EMR.trackx=0x3.

For computing the temperature measured by ADC calibration data is
necessary. This is provided via OTP memory available on SAMA7G5.

Patches 1/19-4/19 provides some fixes.
Patches 5/19-16/19 prepares for the addition of temperature sensor
support.
Patch 17/16 adds the temperature sensor support.

Along with temperature sensor support I took the chance and added
runtime PM support in this series, too (handled in patch 19/19).

The rest of patches in this series are minor cleanups.

Dropped v2 adn replaced with this one.  For now just pushed out as
testing to let the autobuilders take another look at it.
I'll rebase when rc1 is out and then push this out for linux-next
to pick up.

Thanks,

Jonathan

Thank you,
Claudiu Beznea

Changes in v3:
- fixed compilation warning by adjusting patches 10/19, 11/19

Changes in v2:
- addressed review comments
- with this, new patches were intruced in this series: 2/19, 4/19,
  8/19, 9,19
- runtime pm support has been adapted to work also when CONFIG_PM
  is not enabled
- collected tags

Claudiu Beznea (19):
  iio: adc: at91-sama5d2_adc: fix AT91_SAMA5D2_MR_TRACKTIM_MAX
  iio: adc: at91-sama5d2_adc: check return status for pressure and touch
  iio: adc: at91-sama5d2_adc: lock around oversampling and sample freq
  iio: adc: at91-sama5d2_adc: disable/prepare buffer on suspend/resume
  iio: adc: at91-sama5d2_adc: exit from write_raw() when buffers are
    enabled
  iio: adc: at91-sama5d2_adc: handle different EMR.OSR for different hw
    versions
  iio: adc: at91-sama5d2_adc: move the check of oversampling in its
    function
  iio: adc: at91-sama5d2_adc: drop AT91_OSR_XSAMPLES defines
  iio: adc: at91-sama5d2_adc: add .read_avail() chan_info ops
  iio: adc: at91-sama5d2_adc: adjust osr based on specific platform data
  iio: adc: at91-sama5d2_adc: add 64 and 256 oversampling ratio
  iio: adc: at91-sama5d2_adc: move oversampling storage in its function
  iio: adc: at91-sama5d2_adc: update trackx on emr
  iio: adc: at91-sama5d2_adc: add startup and tracktim as parameter for
    at91_adc_setup_samp_freq()
  iio: adc: at91-sama5d2_adc: lock around at91_adc_read_info_raw()
  dt-bindings: iio: adc: at91-sama5d2_adc: add id for temperature
    channel
  iio: adc: at91-sama5d2_adc: add support for temperature sensor
  iio: adc: at91-sama5d2_adc: add empty line after functions
  iio: adc: at91-sama5d2_adc: add runtime pm support

 drivers/iio/adc/at91-sama5d2_adc.c            | 684 +++++++++++++++---
 .../dt-bindings/iio/adc/at91-sama5d2_adc.h    |   3 +
 2 files changed, 568 insertions(+), 119 deletions(-)

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