Messages in this thread |  | | Date | Tue, 5 Jan 2021 16:01:24 +0100 | From | Ralf Schlatterbeck <> | Subject | [PATCH 0/2] auxdisplay: HD44780 connected to I2C via PCF8574 |
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Character LCD driver for the Hitachi HD44780 with I2C connection: There already is a driver for displays with parallel gpio connections. Re-uses the high-level API.
Concerning the compatible-string: I'm currently using
"hit,hd44780+nxp,pcf8575"
- "hit,hd44780" is used for the parallel-connected version of the display - nxp,pcf8575 already exists in drivers/gpio/gpio-pcf857x.c which uses the same chip for gpio expansion.
Let me know if this choice of names is fine or should be changed. For the other device-tree names I'm reusing (some of) the names from the parallel connected display.
.../auxdisplay/hit,hd44780+nxp,pcf8575.yaml (new) | 65 +++++++ drivers/auxdisplay/Kconfig | 14 +- drivers/auxdisplay/Makefile | 1 + drivers/auxdisplay/hd44780-pcf8574.c (new) | 207 +++++++++++++++++++++ 4 files changed, 286 insertions(+), 1 deletion(-)
-- Ralf Schlatterbeck Tel: +43/2243/26465-16 Open Source Consulting www: www.runtux.com Reichergasse 131, A-3411 Weidling email: office@runtux.com
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