forked from Minki/linux
docs: misc-devices: convert files without extension to ReST
Those files are also text files. Convert them to ReST and add to the misc-files index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Link: https://lore.kernel.org/r/b7dc829809673bd8cffe0e7bbe9c9308681c6fe2.1561756511.git.mchehab+samsung@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mauro Carvalho Chehab
Greg Kroah-Hartman
parent
69416739ee
commit
9b5db89ea4
@ -1,11 +1,17 @@
|
||||
====================
|
||||
Kernel driver eeprom
|
||||
====================
|
||||
|
||||
Supported chips:
|
||||
|
||||
* Any EEPROM chip in the designated address range
|
||||
|
||||
Prefix: 'eeprom'
|
||||
|
||||
Addresses scanned: I2C 0x50 - 0x57
|
||||
|
||||
Datasheets: Publicly available from:
|
||||
|
||||
Atmel (www.atmel.com),
|
||||
Catalyst (www.catsemi.com),
|
||||
Fairchild (www.fairchildsemi.com),
|
||||
@ -16,7 +22,9 @@ Supported chips:
|
||||
Xicor (www.xicor.com),
|
||||
and others.
|
||||
|
||||
Chip Size (bits) Address
|
||||
========= ============= ============================================
|
||||
Chip Size (bits) Address
|
||||
========= ============= ============================================
|
||||
24C01 1K 0x50 (shadows at 0x51 - 0x57)
|
||||
24C01A 1K 0x50 - 0x57 (Typical device on DIMMs)
|
||||
24C02 2K 0x50 - 0x57
|
||||
@ -24,7 +32,7 @@ Supported chips:
|
||||
(additional data at 0x51, 0x53, 0x55, 0x57)
|
||||
24C08 8K 0x50, 0x54 (additional data at 0x51, 0x52,
|
||||
0x53, 0x55, 0x56, 0x57)
|
||||
24C16 16K 0x50 (additional data at 0x51 - 0x57)
|
||||
24C16 16K 0x50 (additional data at 0x51 - 0x57)
|
||||
Sony 2K 0x57
|
||||
|
||||
Atmel 34C02B 2K 0x50 - 0x57, SW write protect at 0x30-37
|
||||
@ -33,14 +41,15 @@ Supported chips:
|
||||
Fairchild 34W02 2K 0x50 - 0x57, SW write protect at 0x30-37
|
||||
Microchip 24AA52 2K 0x50 - 0x57, SW write protect at 0x30-37
|
||||
ST M34C02 2K 0x50 - 0x57, SW write protect at 0x30-37
|
||||
========= ============= ============================================
|
||||
|
||||
|
||||
Authors:
|
||||
Frodo Looijaard <frodol@dds.nl>,
|
||||
Philip Edelbrock <phil@netroedge.com>,
|
||||
Jean Delvare <jdelvare@suse.de>,
|
||||
Greg Kroah-Hartman <greg@kroah.com>,
|
||||
IBM Corp.
|
||||
- Frodo Looijaard <frodol@dds.nl>,
|
||||
- Philip Edelbrock <phil@netroedge.com>,
|
||||
- Jean Delvare <jdelvare@suse.de>,
|
||||
- Greg Kroah-Hartman <greg@kroah.com>,
|
||||
- IBM Corp.
|
||||
|
||||
Description
|
||||
-----------
|
||||
@ -74,23 +83,25 @@ this address will write protect the memory array permanently, and the
|
||||
device will no longer respond at the 0x30-37 address. The eeprom driver
|
||||
does not support this register.
|
||||
|
||||
Lacking functionality:
|
||||
Lacking functionality
|
||||
---------------------
|
||||
|
||||
* Full support for larger devices (24C04, 24C08, 24C16). These are not
|
||||
typically found on a PC. These devices will appear as separate devices at
|
||||
multiple addresses.
|
||||
typically found on a PC. These devices will appear as separate devices at
|
||||
multiple addresses.
|
||||
|
||||
* Support for really large devices (24C32, 24C64, 24C128, 24C256, 24C512).
|
||||
These devices require two-byte address fields and are not supported.
|
||||
These devices require two-byte address fields and are not supported.
|
||||
|
||||
* Enable Writing. Again, no technical reason why not, but making it easy
|
||||
to change the contents of the EEPROMs (on DIMMs anyway) also makes it easy
|
||||
to disable the DIMMs (potentially preventing the computer from booting)
|
||||
until the values are restored somehow.
|
||||
to change the contents of the EEPROMs (on DIMMs anyway) also makes it easy
|
||||
to disable the DIMMs (potentially preventing the computer from booting)
|
||||
until the values are restored somehow.
|
||||
|
||||
Use:
|
||||
Use
|
||||
---
|
||||
|
||||
After inserting the module (and any other required SMBus/i2c modules), you
|
||||
should have some EEPROM directories in /sys/bus/i2c/devices/* of names such
|
||||
should have some EEPROM directories in ``/sys/bus/i2c/devices/*`` of names such
|
||||
as "0-0050". Inside each of these is a series of files, the eeprom file
|
||||
contains the binary data from EEPROM.
|
||||
@ -1,10 +1,15 @@
|
||||
========================
|
||||
Kernel driver ics932s401
|
||||
======================
|
||||
========================
|
||||
|
||||
Supported chips:
|
||||
|
||||
* IDT ICS932S401
|
||||
|
||||
Prefix: 'ics932s401'
|
||||
|
||||
Addresses scanned: I2C 0x69
|
||||
|
||||
Datasheet: Publicly available at the IDT website
|
||||
|
||||
Author: Darrick J. Wong
|
||||
@ -14,4 +14,9 @@ fit into other categories.
|
||||
.. toctree::
|
||||
:maxdepth: 2
|
||||
|
||||
eeprom
|
||||
ibmvmc
|
||||
ics932s401
|
||||
isl29003
|
||||
lis3lv02d
|
||||
max6875
|
||||
|
||||
@ -1,10 +1,15 @@
|
||||
======================
|
||||
Kernel driver isl29003
|
||||
=====================
|
||||
======================
|
||||
|
||||
Supported chips:
|
||||
|
||||
* Intersil ISL29003
|
||||
|
||||
Prefix: 'isl29003'
|
||||
|
||||
Addresses scanned: none
|
||||
|
||||
Datasheet:
|
||||
http://www.intersil.com/data/fn/fn7464.pdf
|
||||
|
||||
@ -37,25 +42,33 @@ Sysfs entries
|
||||
-------------
|
||||
|
||||
range:
|
||||
== ===========================
|
||||
0: 0 lux to 1000 lux (default)
|
||||
1: 0 lux to 4000 lux
|
||||
2: 0 lux to 16,000 lux
|
||||
3: 0 lux to 64,000 lux
|
||||
== ===========================
|
||||
|
||||
resolution:
|
||||
== =====================
|
||||
0: 2^16 cycles (default)
|
||||
1: 2^12 cycles
|
||||
2: 2^8 cycles
|
||||
3: 2^4 cycles
|
||||
== =====================
|
||||
|
||||
mode:
|
||||
== =================================================
|
||||
0: diode1's current (unsigned 16bit) (default)
|
||||
1: diode1's current (unsigned 16bit)
|
||||
2: difference between diodes (l1 - l2, signed 15bit)
|
||||
== =================================================
|
||||
|
||||
power_state:
|
||||
== =================================================
|
||||
0: device is disabled (default)
|
||||
1: device is enabled
|
||||
== =================================================
|
||||
|
||||
lux (read only):
|
||||
returns the value from the last sensor reading
|
||||
@ -1,3 +1,4 @@
|
||||
=======================
|
||||
Kernel driver lis3lv02d
|
||||
=======================
|
||||
|
||||
@ -8,8 +9,8 @@ Supported chips:
|
||||
LIS331DLH (16 bits)
|
||||
|
||||
Authors:
|
||||
Yan Burman <burman.yan@gmail.com>
|
||||
Eric Piel <eric.piel@tremplin-utc.net>
|
||||
- Yan Burman <burman.yan@gmail.com>
|
||||
- Eric Piel <eric.piel@tremplin-utc.net>
|
||||
|
||||
|
||||
Description
|
||||
@ -25,11 +26,15 @@ neverball). The accelerometer data is readable via
|
||||
to mg values (1/1000th of earth gravity).
|
||||
|
||||
Sysfs attributes under /sys/devices/platform/lis3lv02d/:
|
||||
position - 3D position that the accelerometer reports. Format: "(x,y,z)"
|
||||
rate - read reports the sampling rate of the accelerometer device in HZ.
|
||||
|
||||
position
|
||||
- 3D position that the accelerometer reports. Format: "(x,y,z)"
|
||||
rate
|
||||
- read reports the sampling rate of the accelerometer device in HZ.
|
||||
write changes sampling rate of the accelerometer device.
|
||||
Only values which are supported by HW are accepted.
|
||||
selftest - performs selftest for the chip as specified by chip manufacturer.
|
||||
selftest
|
||||
- performs selftest for the chip as specified by chip manufacturer.
|
||||
|
||||
This driver also provides an absolute input class device, allowing
|
||||
the laptop to act as a pinball machine-esque joystick. Joystick device can be
|
||||
@ -69,11 +74,12 @@ Axes orientation
|
||||
For better compatibility between the various laptops. The values reported by
|
||||
the accelerometer are converted into a "standard" organisation of the axes
|
||||
(aka "can play neverball out of the box"):
|
||||
|
||||
* When the laptop is horizontal the position reported is about 0 for X and Y
|
||||
and a positive value for Z
|
||||
and a positive value for Z
|
||||
* If the left side is elevated, X increases (becomes positive)
|
||||
* If the front side (where the touchpad is) is elevated, Y decreases
|
||||
(becomes negative)
|
||||
(becomes negative)
|
||||
* If the laptop is put upside-down, Z becomes negative
|
||||
|
||||
If your laptop model is not recognized (cf "dmesg"), you can send an
|
||||
@ -1,12 +1,16 @@
|
||||
=====================
|
||||
Kernel driver max6875
|
||||
=====================
|
||||
|
||||
Supported chips:
|
||||
|
||||
* Maxim MAX6874, MAX6875
|
||||
|
||||
Prefix: 'max6875'
|
||||
|
||||
Addresses scanned: None (see below)
|
||||
Datasheet:
|
||||
http://pdfserv.maxim-ic.com/en/ds/MAX6874-MAX6875.pdf
|
||||
|
||||
Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6874-MAX6875.pdf
|
||||
|
||||
Author: Ben Gardner <bgardner@wabtec.com>
|
||||
|
||||
@ -24,9 +28,13 @@ registers.
|
||||
|
||||
The Maxim MAX6874 is a similar, mostly compatible device, with more inputs
|
||||
and outputs:
|
||||
vin gpi vout
|
||||
|
||||
=========== === === ====
|
||||
- vin gpi vout
|
||||
=========== === === ====
|
||||
MAX6874 6 4 8
|
||||
MAX6875 4 3 5
|
||||
=========== === === ====
|
||||
|
||||
See the datasheet for more information.
|
||||
|
||||
@ -41,13 +49,16 @@ General Remarks
|
||||
---------------
|
||||
|
||||
Valid addresses for the MAX6875 are 0x50 and 0x52.
|
||||
|
||||
Valid addresses for the MAX6874 are 0x50, 0x52, 0x54 and 0x56.
|
||||
|
||||
The driver does not probe any address, so you explicitly instantiate the
|
||||
devices.
|
||||
|
||||
Example:
|
||||
$ modprobe max6875
|
||||
$ echo max6875 0x50 > /sys/bus/i2c/devices/i2c-0/new_device
|
||||
Example::
|
||||
|
||||
$ modprobe max6875
|
||||
$ echo max6875 0x50 > /sys/bus/i2c/devices/i2c-0/new_device
|
||||
|
||||
The MAX6874/MAX6875 ignores address bit 0, so this driver attaches to multiple
|
||||
addresses. For example, for address 0x50, it also reserves 0x51.
|
||||
@ -58,52 +69,67 @@ Programming the chip using i2c-dev
|
||||
----------------------------------
|
||||
|
||||
Use the i2c-dev interface to access and program the chips.
|
||||
|
||||
Reads and writes are performed differently depending on the address range.
|
||||
|
||||
The configuration registers are at addresses 0x00 - 0x45.
|
||||
|
||||
Use i2c_smbus_write_byte_data() to write a register and
|
||||
i2c_smbus_read_byte_data() to read a register.
|
||||
|
||||
The command is the register number.
|
||||
|
||||
Examples:
|
||||
To write a 1 to register 0x45:
|
||||
|
||||
To write a 1 to register 0x45::
|
||||
|
||||
i2c_smbus_write_byte_data(fd, 0x45, 1);
|
||||
|
||||
To read register 0x45:
|
||||
To read register 0x45::
|
||||
|
||||
value = i2c_smbus_read_byte_data(fd, 0x45);
|
||||
|
||||
|
||||
The configuration EEPROM is at addresses 0x8000 - 0x8045.
|
||||
|
||||
The user EEPROM is at addresses 0x8100 - 0x82ff.
|
||||
|
||||
Use i2c_smbus_write_word_data() to write a byte to EEPROM.
|
||||
|
||||
The command is the upper byte of the address: 0x80, 0x81, or 0x82.
|
||||
The data word is the lower part of the address or'd with data << 8.
|
||||
The data word is the lower part of the address or'd with data << 8::
|
||||
|
||||
cmd = address >> 8;
|
||||
val = (address & 0xff) | (data << 8);
|
||||
|
||||
Example:
|
||||
To write 0x5a to address 0x8003:
|
||||
|
||||
To write 0x5a to address 0x8003::
|
||||
|
||||
i2c_smbus_write_word_data(fd, 0x80, 0x5a03);
|
||||
|
||||
|
||||
Reading data from the EEPROM is a little more complicated.
|
||||
|
||||
Use i2c_smbus_write_byte_data() to set the read address and then
|
||||
i2c_smbus_read_byte() or i2c_smbus_read_i2c_block_data() to read the data.
|
||||
|
||||
Example:
|
||||
To read data starting at offset 0x8100, first set the address:
|
||||
|
||||
To read data starting at offset 0x8100, first set the address::
|
||||
|
||||
i2c_smbus_write_byte_data(fd, 0x81, 0x00);
|
||||
|
||||
And then read the data
|
||||
And then read the data::
|
||||
|
||||
value = i2c_smbus_read_byte(fd);
|
||||
|
||||
or
|
||||
or::
|
||||
|
||||
count = i2c_smbus_read_i2c_block_data(fd, 0x84, 16, buffer);
|
||||
|
||||
The block read should read 16 bytes.
|
||||
|
||||
0x84 is the block read command.
|
||||
|
||||
See the datasheet for more details.
|
||||
@ -8871,7 +8871,7 @@ F: include/linux/leds.h
|
||||
LEGACY EEPROM DRIVER
|
||||
M: Jean Delvare <jdelvare@suse.com>
|
||||
S: Maintained
|
||||
F: Documentation/misc-devices/eeprom
|
||||
F: Documentation/misc-devices/eeprom.rst
|
||||
F: drivers/misc/eeprom/eeprom.c
|
||||
|
||||
LEGO MINDSTORMS EV3
|
||||
@ -9157,7 +9157,7 @@ F: Documentation/memory-barriers.txt
|
||||
LIS3LV02D ACCELEROMETER DRIVER
|
||||
M: Eric Piel <eric.piel@tremplin-utc.net>
|
||||
S: Maintained
|
||||
F: Documentation/misc-devices/lis3lv02d
|
||||
F: Documentation/misc-devices/lis3lv02d.rst
|
||||
F: drivers/misc/lis3lv02d/
|
||||
F: drivers/platform/x86/hp_accel.c
|
||||
|
||||
|
||||
@ -3,7 +3,7 @@
|
||||
* isl29003.c - Linux kernel module for
|
||||
* Intersil ISL29003 ambient light sensor
|
||||
*
|
||||
* See file:Documentation/misc-devices/isl29003
|
||||
* See file:Documentation/misc-devices/isl29003.rst
|
||||
*
|
||||
* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
|
||||
*
|
||||
|
||||
@ -341,7 +341,7 @@ config HP_ACCEL
|
||||
|
||||
Support for a led indicating disk protection will be provided as
|
||||
hp::hddprotect. For more information on the feature, refer to
|
||||
Documentation/misc-devices/lis3lv02d.
|
||||
Documentation/misc-devices/lis3lv02d.rst.
|
||||
|
||||
To compile this driver as a module, choose M here: the module will
|
||||
be called hp_accel.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user