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.