The goal of the original exercise to enable the driver for my
Dragonboard expanded when I found the *second* driver for this
sensor in drivers/misc/bmp085.
So I wrote a patch series to bring the features of the IIO driver
on par with the misc driver, and beyond it:
- The first patch set stuff augmenting DT bindings and adding
regulators and a reset GPIO.
- Split transport from core driver (separate I2C module)
- Added SPI support (which I cannot test, grateful for any help,
but pretty sure it works).
- Support for the BMP085 EOC interrupt mechanism rather than
waiting for the conversion to happen.
- Do not re-read calibration data all the time, also toss the
calibration into the entropy pool.
After this I think the misc driver can be replaced with this
driver, but I'd love to hear from the maintainers of that driver
if I've missed something. One of the patches adds all the authors
of the misc driver listed there as I can clearly see code was
copied into this driver at several points.
The only thing missing from the misc driver is the sysfs
interface. If there is real userspace out there using it, we
can implement a compatibility sysfs ABI. But then I'd like
to know what userspace it is, so I can test it.
Linus Walleij (9):
iio: pressure: bmp280: augment DT bindings
iio: pressure: bmp280: support device tree initialization
iio: pressure: bmp280: add reset GPIO line handling
iio: pressure: bmp280: support optional supply regulators
iio: pressure: bmp280: split driver in logical parts
iio: pressure: bmp280: split off an I2C Kconfig entry
iio: pressure: bmp280: add SPI interface driver
iio: pressure: bmp280: add support for the BMP058 EOC interrupt
iio: pressure: bmp280: read calibration data once
.../devicetree/bindings/iio/pressure/bmp085.txt | 11 +-
drivers/iio/pressure/Kconfig | 27 +-
drivers/iio/pressure/Makefile | 3 +
drivers/iio/pressure/{bmp280.c => bmp280-core.c} | 428 ++++++++-------------
drivers/iio/pressure/bmp280-i2c.c | 79 ++++
drivers/iio/pressure/bmp280-regmap.c | 78 ++++
drivers/iio/pressure/bmp280-spi.c | 79 ++++
drivers/iio/pressure/bmp280.h | 86 +++++
8 files changed, 526 insertions(+), 265 deletions(-)
rename drivers/iio/pressure/{bmp280.c => bmp280-core.c} (70%)
create mode 100644 drivers/iio/pressure/bmp280-i2c.c
create mode 100644 drivers/iio/pressure/bmp280-regmap.c
create mode 100644 drivers/iio/pressure/bmp280-spi.c
create mode 100644 drivers/iio/pressure/bmp280.h
--
2.4.11
--
To unsubscribe from this list: send the line "unsubscribe linux-iio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
