Skip to contentSkip to conversation

Documentation/i2c: direct users to i2c-tools regarding i2c/smbus.h

PATCH In review Sam Hansen 2 participants 3 messages Apr 19, 2018 – Apr 25, 2018

Subsystems (3)
lore
Share & tools
lore

Sam Hansen

author
#0 lore raw

PATCH 1/1 Documentation/i2c: direct users to i2c-tools regarding i2c/smbus.h

The current examples reference i2c/smbus.h, which is the first reference in Documentation/i2c/dev-interface to anything related to the i2c-tools project. This moves the existing reference to i2c-tools up into the C-example, directing the user to the project's git repository.

---
 Documentation/i2c/dev-interface | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
Documentation/i2c/dev-interface +4 -4
index fbed645ccd75..ed20f7b7851a 100644
@@ -23,6 +23,10 @@ First, you need to include these two headers:
   #include <linux/i2c-dev.h>
   #include <i2c/smbus.h>
 
+The i2c/smbus header file is provided by the i2c-tools project.  For more info
+about i2c-tools, see:
+https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git/
+
 Now, you have to decide which adapter you want to access. You should
 inspect /sys/class/i2c-dev/ or run "i2cdetect -l" to decide this.
 Adapter numbers are assigned somewhat dynamically, so you can not
@@ -163,10 +167,6 @@ what happened. The 'write' transactions return 0 on success; the
 returns the number of values read. The block buffers need not be longer
 than 32 bytes.
 
-The above functions are made available by linking against the libi2c library,
-which is provided by the i2c-tools project.  See:
-https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git/.
-
 
 Implementation details
 ======================
Signature · 1 line
2.17.0.484.g0c8726318c-goog
author
#1 lore raw

friendly ping :)

This was an incremental patch requested by Wolfram.

Quoted 39 lines · Sam Hansen

The current examples reference i2c/smbus.h, which is the first reference in Documentation/i2c/dev-interface to anything related to the i2c-tools project. This moves the existing reference to i2c-tools up into the C-example, directing the user to the project's git repository.

---
 Documentation/i2c/dev-interface | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
Documentation/i2c/dev-interface +4 -5
index fbed645ccd75..ed20f7b7851a 100644
@@ -23,6 +23,10 @@ First, you need to include these two headers:
   #include <linux/i2c-dev.h>
   #include <i2c/smbus.h>
 
+The i2c/smbus header file is provided by the i2c-tools project.  For more info
+about i2c-tools, see:
+https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git/
+
 Now, you have to decide which adapter you want to access. You should
 inspect /sys/class/i2c-dev/ or run "i2cdetect -l" to decide this.
 Adapter numbers are assigned somewhat dynamically, so you can not
@@ -163,10 +167,6 @@ what happened. The 'write' transactions return 0 on success; the
 returns the number of values read. The block buffers need not be longer
 than 32 bytes.
 
-The above functions are made available by linking against the libi2c library,
-which is provided by the i2c-tools project.  See:
-https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git/.
-
 
 Implementation details
 ======================
--

2.17.0.484.g0c8726318c-goog

#2 lore raw
In reply to Sam Hansen

Hi Sam,

Please don't include the same persons in To: and Cc:. It makes the message delivered twice to them.

Quoted 26 lines · Sam Hansen

The current examples reference i2c/smbus.h, which is the first reference in Documentation/i2c/dev-interface to anything related to the i2c-tools project. This moves the existing reference to i2c-tools up into the C-example, directing the user to the project's git repository.

---
 Documentation/i2c/dev-interface | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
Documentation/i2c/dev-interface +4 -0
index fbed645ccd75..ed20f7b7851a 100644
@@ -23,6 +23,10 @@ First, you need to include these two headers:
   #include <linux/i2c-dev.h>
   #include <i2c/smbus.h>
 
+The i2c/smbus header file is provided by the i2c-tools project.  For more info
+about i2c-tools, see:
+https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git/
+
 Now, you have to decide which adapter you want to access. You should
 inspect /sys/class/i2c-dev/ or run "i2cdetect -l" to decide this.
 Adapter numbers are assigned somewhat dynamically, so you can not

Documentation/i2c/dev-interface what happened. The 'write' transactions return 0 on success; the · line 169

Quoted 7 lines
Documentation/i2c/dev-interface +0 -4
@@ -163,10 +167,6 @@ what happened. The 'write' transactions return 0 on success; the
 returns the number of values read. The block buffers need not be longer
 than 32 bytes.
 
-The above functions are made available by linking against the libi2c library,
-which is provided by the i2c-tools project.  See:
-https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git/.
-

I'm fine with moving the pointer to i2c-tools up in the document. However I find it unfortunate to remove the only reference to libi2c. Typically, distributions will only include the tools in i2c-tools, and they are not relevant in this case. The library will be in a separate package (libi2c or similar), and the header file in yet another package (libi2c-devel or similar.) Although the exact package names are distribution specific, it would be convenient to hint the reader at which packages he is supposed to install. You could also mention that the C program must be compiled with -li2c.

Quoted 3 lines
Documentation/i2c/dev-interface +0 -0
 Implementation details
 ======================
Signature · 2 lines
Jean Delvare
SUSE L3 Support