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From:        Aurelien Jarno <aurelien@aurel32.net>

Hello,

I have to use the pcf8574 chip with my I2C interface, however, the pcf8574
drivers in lm-sensors is a bit basic. It supposes the pin P1 is used as an
input and the others pin as outputs.

Attached is a patch which corrects that, providing to files in /proc
interface, one for writting, the other for reading. It also modifies a bit
the driver to support the pcf8574a (it is a pcf8574 with a different address
range), and add a documentation file in doc/chips.

The patch also includes some cosmetic changes in the pcf8591 driver I wrote
previously, that is to say it modify the chip name in some places I had
forgotten to change when I made a copy/paste from another driver.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1318 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Mark D. Studebaker committed 2002-02-10 23:15:12 +00:00
1 parent 877bf15087
commit 0442f73da9
6 files changed
+161 -29
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kernel/include/sensors.h
+2 -1
View File
@@ -431,7 +431,8 @@
#define LM87_ALARM_TEMP2_FAULT 0x4000
#define LM87_ALARM_TEMP3_FAULT 0x08000
#define PCF8574_SYSCTL_STAT 1000
#define PCF8574_SYSCTL_READ 1000
#define PCF8574_SYSCTL_WRITE 1001
#define MTP008_SYSCTL_IN0 1000 /* Volts * 100 */
#define MTP008_SYSCTL_IN1 1001