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  1. 17 6月, 2009 1 次提交
  3. 14 4月, 2009 1 次提交
    • J
      hwmon: sht15 humidity sensor driver · 251eb40f
      由 Jonathan Cameron 提交于 
      Data sheet at:
http://www.sensirion.ch/en/pdf/product_information/Datasheet-humidity-sensor-SHT1x.pdf

These sensors communicate over a 2 wire bus running a device specific
protocol.  The complexity of the driver is mainly due to handling the
substantial delays between requesting a reading and the device pulling the
data line low to indicate that the data is available.  This is handled by
an interrupt that is disabled under all other conditions.

I wasn't terribly clear on the best way to handle this, so comments on
that aspect would be particularly welcome!

Interpretation of the temperature depends on knowing the supply voltage.
If configured in a board config as a regulator consumer this is obtained
from the regulator subsystem.  If not it should be provided in the
platform data.

I've placed this driver in the hwmon subsystem as it is definitely a
device that may be used for hardware monitoring and with it's relatively
slow response times (up to 120 millisecs to get a reading) a caching
strategy certainly seems to make sense!
Signed-off-by: NJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      251eb40f
  5. 07 4月, 2009 2 次提交
  7. 01 4月, 2009 3 次提交
  9. 31 3月, 2009 4 次提交
  11. 12 3月, 2009 1 次提交
  13. 16 1月, 2009 2 次提交
  15. 07 1月, 2009 6 次提交
  17. 13 11月, 2008 2 次提交
  19. 17 10月, 2008 2 次提交
  21. 24 9月, 2008 1 次提交
  23. 25 8月, 2008 1 次提交
  25. 15 8月, 2008 1 次提交
    • M
      hwmon: ADC124S501 generic driver · d42139a3
      由 Marc Pignat 提交于 
      SPI driver for analog to digital converters national semiconductor
ADC081S101, ADC124S501, ...

Code for 8 channels by Tobias Himmer.

This driver adds support for National Semiconductor ADC<bb><c>S<sss> chip
family, where:

 * bb  is the resolution in number of bits (8, 10, 12)
 * c   is the number of channels (1, 2, 4, 8)
 * sss is the maximum conversion speed (021 for 200 kSPS, 051 for 500
   kSPS and 101 for 1 MSPS)

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: NMarc Pignat <marc.pignat@hevs.ch>
Cc: Tobias Himmer <tobias@himmer-online.de>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d42139a3
  27. 07 8月, 2008 3 次提交
  29. 01 8月, 2008 2 次提交
    • D
      hwmon: (lm75) add new-style driver binding · 9ebd3d82
      由 David Brownell 提交于 
      More LM75 updates:

 - Teach the LM75 driver to use new-style driver binding:

     * Create a second driver struct, using new-style driver binding
       methods cribbed from the legacy code.

     * Add a MODULE_DEVICE_TABLE (for "newER-style binding")

     * The legacy probe logic delegates its work to this new code.

     * The legacy driver now uses the name "lm75_legacy".

 - More careful initialization.  Chips are put into 9-bit mode so
   the current interconversion routines will never fail.

 - Save the original chip configuration, and restore it on exit.
   (Among other things, this normally turns off the mode where
   the chip is constantly sampling ... and thus saves power.)

So the new-style code should catch all chips that boards declare,
while the legacy code catches others.  This particular coexistence
strategy may need some work yet ... legacy modes might best be set
up explicitly by some tool not unlike "sensors-detect".  (Or else
completely eradicated...)
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Acked-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>
      9ebd3d82
    • D
      hwmon: (lm75) cleanup/reorg · 01a52397
      由 David Brownell 提交于 
      Minor cleanup and reorg of the lm75 code.

 - Kconfig provides a larger list of lm75-compatible chips

 - A top comment now says what the driver does (!) ... as in, just
   what sort of sensor is this??

 - Section comments now delineate the various sections of the driver:
   hwmon attributes, driver binding, register access, module glue.
   One driver binding function moved out of the attribute section,
   as did the driver struct itself.

 - Minor tweaks to legacy probe logic:  correct a comment, and
   remove a pointless variable.

 - Whitespace, linelength, and comment fixes.

This patch should include no functional changes.  It's preparation
for adding new-style (driver model) I2C driver binding.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Acked-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NLaurent Pinchart <laurentp@cse-semaphore.com>
Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>
      01a52397
  31. 25 5月, 2008 1 次提交
  33. 20 3月, 2008 1 次提交
  35. 19 2月, 2008 1 次提交
  37. 08 2月, 2008 4 次提交
  39. 08 11月, 2007 1 次提交