Hi,
This series introduces common reset ops for simple reset controllers.
"Simple" in this context means that they allow to directly control reset
lines by setting and clearing bits in a single register or in a contiguous
register range that is exclusive to the reset controller.
Parts of the sunxi driver and the socfpga, stm32, and zx2967 drivers are
merged into a single reset-simple driver.
The sunxi driver is kept around to register the early reset controllers,
but it reuses the exported reset_simple_ops.
The first patch depends on [1] or commit 726cc791c9b9 ("reset: sunxi: fix
number of reset lines") in linux-next. On linux-next, the second patch will
trivially conflict with commit 7799167b7a14 ("regulator: Convert to using
%pOF instead of full_name").
Changes since v2 [2]:
- Use of_device_get_match_data instead of of_match_device,
add kerneldoc comment for struct reset_simple_devdata and struct
reset_simple_data, suggested by Chen-Yu.
- Add reg_offset and nr_reset override to struct reset_simple_devdata,
instead of special casing socfpga, always check "altr,modrst-offset"
device tree property if a default reg_offset is set, based on
Alexandru's advice.
- Rename "*inverted" properties to "*active_low".
[1] https://patchwork.kernel.org/patch/9895433/
[2] https://patchwork.kernel.org/patch/9895833/
https://patchwork.kernel.org/patch/9895819/
https://patchwork.kernel.org/patch/9895831/
https://patchwork.kernel.org/patch/9895815/
https://patchwork.kernel.org/patch/9895841/
regards
Philipp
Philipp Zabel (5):
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967
reset: socfpga: use the reset-simple driver
reset: stm32: use the reset-simple driver
reset: zx2967: use the reset-simple driver
reset: simple: read back to make sure changes are applied
MAINTAINERS | 1 -
drivers/reset/Kconfig | 24 ++----
drivers/reset/Makefile | 4 +-
drivers/reset/reset-simple.c | 188 ++++++++++++++++++++++++++++++++++++++++++
drivers/reset/reset-simple.h | 45 ++++++++++
drivers/reset/reset-socfpga.c | 154 ----------------------------------
drivers/reset/reset-stm32.c | 108 ------------------------
drivers/reset/reset-sunxi.c | 104 ++---------------------
drivers/reset/reset-zx2967.c | 99 ----------------------
9 files changed, 249 insertions(+), 478 deletions(-)
create mode 100644 drivers/reset/reset-simple.c
create mode 100644 drivers/reset/reset-simple.h
delete mode 100644 drivers/reset/reset-socfpga.c
delete mode 100644 drivers/reset/reset-stm32.c
delete mode 100644 drivers/reset/reset-zx2967.c
--
2.11.0
