On Friday, June 29, 2018 07:31 PM, Daniel Mack wrote:
This patch set contains four small patches that bring devicetree
functionality to w1 bus masters and slaves in general. As an example,
the DS2760 driver is made aware of devicetree nodes as an example.
Other drivers can easily be ported later.
W1 masters scan their bus in order to discover slave devices. Once
one is found, a driver matching the family of the device is instanciated
which handles it.
All that's needed for now is a call to of_find_matching_node() when
a slave device is attached, so the corresponding of_node pointer is
set.
The series also contains a patch that merges the w1 slave driver for the
DS2760 battery monitor into its only user, the ds2760 supply driver.
The indirection with two drivers never had any benefit, and here is
a good opportunity to clean this up.
Patch #1 adds some DT bindings documentation
Patch #2 adds the call to of_find_matching_node()
Patch #3 merges the w1 slave and the supply driver for ds2760
Patch #4 makes the ds2760 supply driver aware of DT environments
This works fine on a PXA3xx based board with a battery attached to
the w1-gpio bus master controller.
Sorry, I messed up the patch statistics in the cover letter. Here is the
correct version:
.../bindings/power/supply/maxim,ds2760.txt | 29 ++
.../devicetree/bindings/w1/w1-gpio.txt | 6 +
Documentation/devicetree/bindings/w1/w1.txt | 18 +
drivers/power/supply/Kconfig | 2 +-
drivers/power/supply/ds2760_battery.c | 351 +++++++++++++-----
drivers/w1/slaves/Kconfig | 12 -
drivers/w1/slaves/Makefile | 1 -
drivers/w1/slaves/w1_ds2760.c | 175 ---------
drivers/w1/slaves/w1_ds2760.h | 59 ---
drivers/w1/w1.c | 3 +
include/linux/w1.h | 2 +
11 files changed, 320 insertions(+), 338 deletions(-)
create mode 100644
Documentation/devicetree/bindings/power/supply/maxim,ds2760.txt
create mode 100644 Documentation/devicetree/bindings/w1/w1.txt
delete mode 100644 drivers/w1/slaves/w1_ds2760.c
delete mode 100644 drivers/w1/slaves/w1_ds2760.h
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