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authorMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-06-29 07:36:46 -0300
committerCorey Minyard <cminyard@mvista.com>2019-06-30 19:33:25 -0500
commitac499fba98c3c65078fd84fa0a62cd6f6d5837ed (patch)
tree607c9d16556143eb588b81b0b0873bd65abfd11a /Documentation
parenta88b6d5668bef303d01b706a35946bfc8e67402c (diff)
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docs: ipmb: place it at driver-api and convert to ReST
No new doc should be added at the main Documentation/ directory. Instead, new docs should be added as ReST files, within the Kernel documentation body. Fixes: 51bd6f291583 ("Add support for IPMB driver") Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Message-Id: <d23c36ca65fe6ad56af1723bf70f7a7f4154c410.1561804596.git.mchehab+samsung@kernel.org> Signed-off-by: Corey Minyard <cminyard@mvista.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/driver-api/index.rst1
-rw-r--r--Documentation/driver-api/ipmb.rst (renamed from Documentation/IPMB.txt)62
2 files changed, 33 insertions, 30 deletions
diff --git a/Documentation/driver-api/index.rst b/Documentation/driver-api/index.rst
index d26308af6036..b189bd3013ff 100644
--- a/Documentation/driver-api/index.rst
+++ b/Documentation/driver-api/index.rst
@@ -34,6 +34,7 @@ available subsections can be seen below.
pci/index
spi
i2c
+ ipmb
i3c/index
hsi
edac
diff --git a/Documentation/IPMB.txt b/Documentation/driver-api/ipmb.rst
index a6ed8b68bd0f..7e2265144157 100644
--- a/Documentation/IPMB.txt
+++ b/Documentation/driver-api/ipmb.rst
@@ -32,11 +32,11 @@ This driver works with the I2C driver and a userspace
program such as OpenIPMI:
1) It is an I2C slave backend driver. So, it defines a callback
-function to set the Satellite MC as an I2C slave.
-This callback function handles the received IPMI requests.
+ function to set the Satellite MC as an I2C slave.
+ This callback function handles the received IPMI requests.
2) It defines the read and write functions to enable a user
-space program (such as OpenIPMI) to communicate with the kernel.
+ space program (such as OpenIPMI) to communicate with the kernel.
Load the IPMB driver
@@ -48,34 +48,35 @@ CONFIG_IPMB_DEVICE_INTERFACE=y
1) If you want the driver to be loaded at boot time:
-a) Add this entry to your ACPI table, under the appropriate SMBus:
+a) Add this entry to your ACPI table, under the appropriate SMBus::
-Device (SMB0) // Example SMBus host controller
-{
- Name (_HID, "<Vendor-Specific HID>") // Vendor-Specific HID
- Name (_UID, 0) // Unique ID of particular host controller
- :
- :
- Device (IPMB)
- {
- Name (_HID, "IPMB0001") // IPMB device interface
- Name (_UID, 0) // Unique device identifier
- }
-}
+ Device (SMB0) // Example SMBus host controller
+ {
+ Name (_HID, "<Vendor-Specific HID>") // Vendor-Specific HID
+ Name (_UID, 0) // Unique ID of particular host controller
+ :
+ :
+ Device (IPMB)
+ {
+ Name (_HID, "IPMB0001") // IPMB device interface
+ Name (_UID, 0) // Unique device identifier
+ }
+ }
-b) Example for device tree:
+b) Example for device tree::
-&i2c2 {
- status = "okay";
+ &i2c2 {
+ status = "okay";
- ipmb@10 {
- compatible = "ipmb-dev";
- reg = <0x10>;
- };
-};
+ ipmb@10 {
+ compatible = "ipmb-dev";
+ reg = <0x10>;
+ };
+ };
-2) Manually from Linux:
-modprobe ipmb-dev-int
+2) Manually from Linux::
+
+ modprobe ipmb-dev-int
Instantiate the device
@@ -86,15 +87,16 @@ described in 'Documentation/i2c/instantiating-devices'.
If you have multiple BMCs, each connected to your Satellite MC via
a different I2C bus, you can instantiate a device for each of
those BMCs.
+
The name of the instantiated device contains the I2C bus number
-associated with it as follows:
+associated with it as follows::
-BMC1 ------ IPMB/I2C bus 1 ---------| /dev/ipmb-1
+ BMC1 ------ IPMB/I2C bus 1 ---------| /dev/ipmb-1
Satellite MC
-BMC1 ------ IPMB/I2C bus 2 ---------| /dev/ipmb-2
+ BMC1 ------ IPMB/I2C bus 2 ---------| /dev/ipmb-2
For instance, you can instantiate the ipmb-dev-int device from
-user space at the 7 bit address 0x10 on bus 2:
+user space at the 7 bit address 0x10 on bus 2::
# echo ipmb-dev 0x1010 > /sys/bus/i2c/devices/i2c-2/new_device