pinctrl: mcp23s08: spi: Fix duplicate pinctrl debugfs entries

Browse source

This is a bit more involved because the pinctrl core so far always
assumed that one device (with a unique dev_name) only contains a single
pinctrl thing. This is not true for the mcp23s08 driver for chips
connected over SPI. They have a "logical address" which means that
several chips can share one physical CS signal.

A downside of this patch are some possibly ugly names for the debugfs
entries, such as "spi1.1-mcp23xxx-pinctrl.2", etc.

Signed-off-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

...

This commit is contained in:

Jan Kundrát 2018-01-26 16:06:37 +01:00 • committed by Linus Walleij

parent ed23175141

commit 1781af563a

2 changed files with 24 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

18

drivers/pinctrl/core.c

View file

9

drivers/pinctrl/pinctrl-mcp23s08.c

View file