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authorJean Delvare <khali@linux-fr.org>2005-07-20 00:02:32 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2005-09-05 09:14:12 -0700
commit5071860aba7fc69279ab822638ed2c2e4549f9fd (patch)
treee23a3c7eba547c9d81c7680a40c41536c8a45da3 /Documentation/i2c
parent4926c0d4de77c5396a274ee7941ed7fc02afed26 (diff)
downloadlinux-linaro-stable-5071860aba7fc69279ab822638ed2c2e4549f9fd.tar.gz
[PATCH] I2C: Separate non-i2c hwmon drivers from i2c-core (7/9)
Kill normal_isa in header files, documentation and all chip drivers, as it is no more used. normal_i2c could be renamed to normal, but I decided not to do so at the moment, so as to limit the number of changes. This might be done later as part of the i2c_probe/i2c_detect merge. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/i2c')
-rw-r--r--Documentation/i2c/porting-clients7
-rw-r--r--Documentation/i2c/writing-clients35
2 files changed, 19 insertions, 23 deletions
diff --git a/Documentation/i2c/porting-clients b/Documentation/i2c/porting-clients
index a7adbdd9ea8a..105c6186b912 100644
--- a/Documentation/i2c/porting-clients
+++ b/Documentation/i2c/porting-clients
@@ -29,8 +29,8 @@ Technical changes:
Please respect this inclusion order. Some extra headers may be
required for a given driver (e.g. "lm75.h").
-* [Addresses] SENSORS_I2C_END becomes I2C_CLIENT_END, SENSORS_ISA_END
- becomes I2C_CLIENT_ISA_END.
+* [Addresses] SENSORS_I2C_END becomes I2C_CLIENT_END, ISA addresses
+ are no more handled by the i2c core.
* [Client data] Get rid of sysctl_id. Try using standard names for
register values (for example, temp_os becomes temp_max). You're
@@ -72,7 +72,8 @@ Technical changes:
name string, which will be filled with a lowercase, short string
(typically the driver name, e.g. "lm75").
In i2c-only drivers, drop the i2c_is_isa_adapter check, it's
- useless.
+ useless. Same for isa-only drivers, as the test would always be
+ true. Only hybrid drivers (which are quite rare) still need it.
The errorN labels are reduced to the number needed. If that number
is 2 (i2c-only drivers), it is advised that the labels are named
exit and exit_free. For i2c+isa drivers, labels should be named
diff --git a/Documentation/i2c/writing-clients b/Documentation/i2c/writing-clients
index 91664be91ffc..e6b546dd4f7b 100644
--- a/Documentation/i2c/writing-clients
+++ b/Documentation/i2c/writing-clients
@@ -195,31 +195,28 @@ Probing classes (sensors)
-------------------------
If you write a `sensors' driver, you use a slightly different interface.
-As well as I2C addresses, we have to cope with ISA addresses. Also, we
-use a enum of chip types. Don't forget to include `sensors.h'.
+Also, we use a enum of chip types. Don't forget to include `sensors.h'.
The following lists are used internally. They are all lists of integers.
- normal_i2c: filled in by the module writer. Terminated by SENSORS_I2C_END.
+ normal_i2c: filled in by the module writer. Terminated by I2C_CLIENT_END.
A list of I2C addresses which should normally be examined.
- normal_isa: filled in by the module writer. Terminated by SENSORS_ISA_END.
- A list of ISA addresses which should normally be examined.
- probe: insmod parameter. Initialize this list with SENSORS_I2C_END values.
- A list of pairs. The first value is a bus number (SENSORS_ISA_BUS for
- the ISA bus, -1 for any I2C bus), the second is the address. These
- addresses are also probed, as if they were in the 'normal' list.
- ignore: insmod parameter. Initialize this list with SENSORS_I2C_END values.
- A list of pairs. The first value is a bus number (SENSORS_ISA_BUS for
- the ISA bus, -1 for any I2C bus), the second is the I2C address. These
- addresses are never probed. This parameter overrules 'normal' and
- 'probe', but not the 'force' lists.
+ probe: insmod parameter. Initialize this list with I2C_CLIENT_END values.
+ A list of pairs. The first value is a bus number (ANY_I2C_BUS for any
+ I2C bus), the second is the address. These addresses are also probed,
+ as if they were in the 'normal' list.
+ ignore: insmod parameter. Initialize this list with I2C_CLIENT_END values.
+ A list of pairs. The first value is a bus number (ANY_I2C_BUS for any
+ I2C bus), the second is the I2C address. These addresses are never
+ probed. This parameter overrules 'normal' and 'probe', but not the
+ 'force' lists.
Also used is a list of pointers to sensors_force_data structures:
force_data: insmod parameters. A list, ending with an element of which
the force field is NULL.
Each element contains the type of chip and a list of pairs.
- The first value is a bus number (SENSORS_ISA_BUS for the ISA bus,
- -1 for any I2C bus), the second is the address.
+ The first value is a bus number (ANY_I2C_BUS for any I2C bus), the
+ second is the address.
These are automatically translated to insmod variables of the form
force_foo.
@@ -227,13 +224,11 @@ So we have a generic insmod variabled `force', and chip-specific variables
`force_CHIPNAME'.
Fortunately, as a module writer, you just have to define the `normal_i2c'
-and `normal_isa' parameters, and define what chip names are used.
-The complete declaration could look like this:
+parameter, and define what chip names are used. The complete declaration
+could look like this:
/* Scan i2c addresses 0x37, and 0x48 to 0x4f */
static unsigned short normal_i2c[] = { 0x37, 0x48, 0x49, 0x4a, 0x4b, 0x4c,
0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
- /* Scan ISA address 0x290 */
- static unsigned int normal_isa[] = {0x0290,SENSORS_ISA_END};
/* Define chips foo and bar, as well as all module parameters and things */
SENSORS_INSMOD_2(foo,bar);