hwmon: (pcf8591) Documentation clean-ups

Clean up the pcf8591 driver documentation:
* The PCF8591 chip is now an NXP product.
* Fix a sysfs path.
* Fix the name of sysfs attributes.
* And a few other random fixes.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Aurelien Jarno <aurelien@aurel32.net>

diff --git a/Documentation/hwmon/pcf8591 b/Documentation/hwmon/pcf8591
index 5628fcf4207f787fa3ab33fc07c377f4e1c8e196..e76a7892f68ed5e15b52eff2f76981c3c3d63bfc 100644 (file)
--- a/Documentation/hwmon/pcf8591
+++ b/Documentation/hwmon/pcf8591
@@ -2,11 +2,11 @@ Kernel driver pcf8591
 =====================
 
 Supported chips:
 =====================
 
 Supported chips:

-  * Philips PCF8591
+  * Philips/NXP PCF8591

     Prefix: 'pcf8591'
     Addresses scanned: I2C 0x48 - 0x4f
     Prefix: 'pcf8591'
     Addresses scanned: I2C 0x48 - 0x4f

-    Datasheet: Publicly available at the Philips Semiconductor website
-               http://www.semiconductors.philips.com/pip/PCF8591P.html
+    Datasheet: Publicly available at the NXP website
+               http://www.nxp.com/pip/PCF8591_6.html

 
 Authors:
         Aurelien Jarno <aurelien@aurel32.net>
 
 Authors:
         Aurelien Jarno <aurelien@aurel32.net>


@@ -16,9 +16,10 @@ Authors:
 
 Description
 -----------
 
 Description
 -----------

+

 The PCF8591 is an 8-bit A/D and D/A converter (4 analog inputs and one
 The PCF8591 is an 8-bit A/D and D/A converter (4 analog inputs and one

-analog output) for the I2C bus produced by Philips Semiconductors. It
-is designed to provide a byte I2C interface to up to 4 separate devices.
+analog output) for the I2C bus produced by Philips Semiconductors (now NXP).
+It is designed to provide a byte I2C interface to up to 4 separate devices.

 
 The PCF8591 has 4 analog inputs programmable as single-ended or
 differential inputs :
 
 The PCF8591 has 4 analog inputs programmable as single-ended or
 differential inputs :


@@ -58,8 +59,8 @@ Accessing PCF8591 via /sys interface
 -------------------------------------
 
 ! Be careful !
 -------------------------------------
 
 ! Be careful !

-The PCF8591 is plainly impossible to detect ! Stupid chip.
-So every chip with address in the interval [48..4f] is
+The PCF8591 is plainly impossible to detect! Stupid chip.
+So every chip with address in the interval [0x48..0x4f] is

 detected as PCF8591. If you have other chips in this address
 range, the workaround is to load this module after the one
 for your others chips.
 detected as PCF8591. If you have other chips in this address
 range, the workaround is to load this module after the one
 for your others chips.


@@ -67,19 +68,20 @@ for your others chips.
 On detection (i.e. insmod, modprobe et al.), directories are being
 created for each detected PCF8591:
 
 On detection (i.e. insmod, modprobe et al.), directories are being
 created for each detected PCF8591:
 

-/sys/bus/devices/<0>-<1>/
+/sys/bus/i2c/devices/<0>-<1>/

 where <0> is the bus the chip was detected on (e. g. i2c-0)
 and <1> the chip address ([48..4f])
 
 Inside these directories, there are such files:
 where <0> is the bus the chip was detected on (e. g. i2c-0)
 and <1> the chip address ([48..4f])
 
 Inside these directories, there are such files:

-in0, in1, in2, in3, out0_enable, out0_output, name
+in0_input, in1_input, in2_input, in3_input, out0_enable, out0_output, name

 
 Name contains chip name.
 
 
 Name contains chip name.
 

-The in0, in1, in2 and in3 files are RO. Reading gives the value of the
-corresponding channel. Depending on the current analog inputs configuration,
-files in2 and/or in3 do not exist. Values range are from 0 to 255 for single
-ended inputs and -128 to +127 for differential inputs (8-bit ADC).
+The in0_input, in1_input, in2_input and in3_input files are RO. Reading gives
+the value of the corresponding channel. Depending on the current analog inputs
+configuration, files in2_input and in3_input may not exist. Values range
+from 0 to 255 for single ended inputs and -128 to +127 for differential inputs
+(8-bit ADC).

 
 The out0_enable file is RW. Reading gives "1" for analog output enabled and
 "0" for analog output disabled. Writing accepts "0" and "1" accordingly.
 
 The out0_enable file is RW. Reading gives "1" for analog output enabled and
 "0" for analog output disabled. Writing accepts "0" and "1" accordingly.