hw/gpio: introduce pcf8574 driver
NXP PCF8574 and compatible ICs are simple I2C GPIO expanders.
PCF8574 incorporates quasi-bidirectional IO, and simple
communication protocol, when IO read is I2C byte read, and
IO write is I2C byte write. User can think of it as
open-drain port, when line high state is input and line low
state is output.
Signed-off-by: Dmitrii Sharikhin <d.sharikhin@yadro.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <f1552d822276e878d84c01eba2cf2c7c9ebdde00.camel@yadro.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 4d96f85..72c23e3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2503,6 +2503,12 @@
F: hw/i2c/i2c_mux_pca954x.c
F: include/hw/i2c/i2c_mux_pca954x.h
+pcf8574
+M: Dmitrii Sharikhin <d.sharikhin@yadro.com>
+S: Maintained
+F: hw/gpio/pcf8574.c
+F: include/gpio/pcf8574.h
+
Generic Loader
M: Alistair Francis <alistair@alistair23.me>
S: Maintained
