Module Name: src
Committed By: thorpej
Date: Mon Jan 17 16:33:00 UTC 2022
Modified Files:
src/sys/conf: files
Log Message:
Re-factor and overhaul the "mcp23s17gpio" driver as "mcpgpio", and
add support for 8-bit and I2C variants of the chip:
- MCP23008 / MCP23S08: 8-bit (I2C / SPI)
- MCP23017 / MCP23S17: 16-bit (I2C / SPI)
- MCP23018 / MCP23S18: 16-bit (I2C / SPI), open-drain outputs
The MCP23x17 and MCP23x18 are essentially identical, software-wise; we
merely report different GPIO pin capabilities (no push-pull output for
MCP23x18). Also, remove the tri-state capability that was previously
advertised by the old version of this driver; these chips have no way
to put the pin into a HI-Z mode.
All 3 I2C versions are supported, but the SPI front-end still only
supports the MCP23S17 for now (SPI autoconfiguration needs an overhaul).
mcp23s17gpio(4) remains present as a link to the new mcpgpio(4) man page.
XXX Still to-do: FDT integration, interrupt suppoort.
(File missed in prior commit.)
To generate a diff of this commit:
cvs rdiff -u -r1.1293 -r1.1294 src/sys/conf/files
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/conf/files
diff -u src/sys/conf/files:1.1293 src/sys/conf/files:1.1294
--- src/sys/conf/files:1.1293 Mon Jan 3 17:19:41 2022
+++ src/sys/conf/files Mon Jan 17 16:33:00 2022
@@ -1,4 +1,4 @@
-# $NetBSD: files,v 1.1293 2022/01/03 17:19:41 jmcneill Exp $
+# $NetBSD: files,v 1.1294 2022/01/17 16:33:00 thorpej Exp $
# @(#)files.newconf 7.5 (Berkeley) 5/10/93
version 20171118
@@ -420,6 +420,10 @@ file dev/ic/nslm7x.c lm needs-flag
device spdmem
file dev/ic/spdmem.c spdmem
+# Microchip MCP23x08 / MCP23x17 general purpose input/output
+device mcpgpio: gpiobus
+file dev/ic/mcp23xxxgpio.c mcpgpio
+
# SSD1306 or SH1106 OLED/PLED display (attaches via I2C or SPI)
device ssdfb: wsemuldisplaydev
file dev/ic/ssdfb.c ssdfb
