Commit 2bf34a1c authored by R.Marek@sh.cvut.cz's avatar R.Marek@sh.cvut.cz Committed by Greg Kroah-Hartman
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[PATCH] I2C: documentation update 1/3



This patch just changes the extension of Documentation/i2c/chips/smsc47b397.txt
to none - to conform with naming in i2c subsystem directory.
Signed-off-by: default avatarRudolf Marek <r.marek@sh.cvut.cz>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 72cd7995
......@@ -72,20 +72,20 @@ To program the configuration registers, the following sequence must be followed:
Enter Configuration Mode
To place the chip into the Configuration State The config key (0x55) is written
to the CONFIG PORT (0x2E).
to the CONFIG PORT (0x2E).
Configuration Mode
In configuration mode, the INDEX PORT is located at the CONFIG PORT address and
the DATA PORT is at INDEX PORT address + 1.
The desired configuration registers are accessed in two steps:
The desired configuration registers are accessed in two steps:
a. Write the index of the Logical Device Number Configuration Register
(i.e., 0x07) to the INDEX PORT and then write the number of the
desired logical device to the DATA PORT.
b. Write the address of the desired configuration register within the
logical device to the INDEX PORT and then write or read the config-
uration register through the DATA PORT.
uration register through the DATA PORT.
Note: If accessing the Global Configuration Registers, step (a) is not required.
......@@ -96,18 +96,18 @@ The chip returns to the RUN State. (This is important).
Programming Example
The following is an example of how to read the SIO Device ID located at 0x20
; ENTER CONFIGURATION MODE
; ENTER CONFIGURATION MODE
MOV DX,02EH
MOV AX,055H
OUT DX,AL
; GLOBAL CONFIGURATION REGISTER
; GLOBAL CONFIGURATION REGISTER
MOV DX,02EH
MOV AL,20H
OUT DX,AL
OUT DX,AL
; READ THE DATA
MOV DX,02FH
IN AL,DX
; EXIT CONFIGURATION MODE
; EXIT CONFIGURATION MODE
MOV DX,02EH
MOV AX,0AAH
OUT DX,AL
......@@ -122,12 +122,12 @@ Obtaining the HWM Base Address.
The following is an example of how to read the HWM Base Address located in
Logical Device 8.
; ENTER CONFIGURATION MODE
; ENTER CONFIGURATION MODE
MOV DX,02EH
MOV AX,055H
OUT DX,AL
; CONFIGURE REGISTER CRE0,
; LOGICAL DEVICE 8
; CONFIGURE REGISTER CRE0,
; LOGICAL DEVICE 8
MOV DX,02EH
MOV AL,07H
OUT DX,AL ;Point to LD# Config Reg
......@@ -135,12 +135,12 @@ MOV DX,02FH
MOV AL, 08H
OUT DX,AL;Point to Logical Device 8
;
MOV DX,02EH
MOV DX,02EH
MOV AL,60H
OUT DX,AL ; Point to HWM Base Addr MSB
MOV DX,02FH
IN AL,DX ; Get MSB of HWM Base Addr
; EXIT CONFIGURATION MODE
; EXIT CONFIGURATION MODE
MOV DX,02EH
MOV AX,0AAH
OUT DX,AL
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