Rename the iio documentation files to ReST, add an
index for them and adjust in order to produce a nice html
output via the Sphinx build system.
At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Acked-by: Jonathan Cameron <[email protected]>
---
.../iio/{ep93xx_adc.txt => ep93xx_adc.rst} | 15 +++++-
.../{iio_configfs.txt => iio_configfs.rst} | 52 +++++++++++--------
Documentation/iio/index.rst | 12 +++++
drivers/iio/Kconfig | 2 +-
4 files changed, 56 insertions(+), 25 deletions(-)
rename Documentation/iio/{ep93xx_adc.txt => ep93xx_adc.rst} (71%)
rename Documentation/iio/{iio_configfs.txt => iio_configfs.rst} (73%)
create mode 100644 Documentation/iio/index.rst
diff --git a/Documentation/iio/ep93xx_adc.txt b/Documentation/iio/ep93xx_adc.rst
similarity index 71%
rename from Documentation/iio/ep93xx_adc.txt
rename to Documentation/iio/ep93xx_adc.rst
index 23053e7817bd..4fd8dea3f6b8 100644
--- a/Documentation/iio/ep93xx_adc.txt
+++ b/Documentation/iio/ep93xx_adc.rst
@@ -1,12 +1,16 @@
-Cirrus Logic EP93xx ADC driver.
+==============================
+Cirrus Logic EP93xx ADC driver
+==============================
1. Overview
+===========
The driver is intended to work on both low-end (EP9301, EP9302) devices with
5-channel ADC and high-end (EP9307, EP9312, EP9315) devices with 10-channel
touchscreen/ADC module.
2. Channel numbering
+====================
Numbering scheme for channels 0..4 is defined in EP9301 and EP9302 datasheets.
EP9307, EP9312 and EP9312 have 3 channels more (total 8), but the numbering is
@@ -17,13 +21,20 @@ Assuming ep93xx_adc is IIO device0, you'd find the following entries under
+-----------------+---------------+
| sysfs entry | ball/pin name |
- +-----------------+---------------+
+ +=================+===============+
| in_voltage0_raw | YM |
+ +-----------------+---------------+
| in_voltage1_raw | SXP |
+ +-----------------+---------------+
| in_voltage2_raw | SXM |
+ +-----------------+---------------+
| in_voltage3_raw | SYP |
+ +-----------------+---------------+
| in_voltage4_raw | SYM |
+ +-----------------+---------------+
| in_voltage5_raw | XP |
+ +-----------------+---------------+
| in_voltage6_raw | XM |
+ +-----------------+---------------+
| in_voltage7_raw | YP |
+-----------------+---------------+
diff --git a/Documentation/iio/iio_configfs.txt b/Documentation/iio/iio_configfs.rst
similarity index 73%
rename from Documentation/iio/iio_configfs.txt
rename to Documentation/iio/iio_configfs.rst
index 4e5f101837a8..ecbfdb3afef7 100644
--- a/Documentation/iio/iio_configfs.txt
+++ b/Documentation/iio/iio_configfs.rst
@@ -1,6 +1,9 @@
+===============================
Industrial IIO configfs support
+===============================
1. Overview
+===========
Configfs is a filesystem-based manager of kernel objects. IIO uses some
objects that could be easily configured using configfs (e.g.: devices,
@@ -10,20 +13,22 @@ See Documentation/filesystems/configfs/configfs.txt for more information
about how configfs works.
2. Usage
+========
In order to use configfs support in IIO we need to select it at compile
time via CONFIG_IIO_CONFIGFS config option.
-Then, mount the configfs filesystem (usually under /config directory):
+Then, mount the configfs filesystem (usually under /config directory)::
-$ mkdir /config
-$ mount -t configfs none /config
+ $ mkdir /config
+ $ mount -t configfs none /config
At this point, all default IIO groups will be created and can be accessed
under /config/iio. Next chapters will describe available IIO configuration
objects.
3. Software triggers
+====================
One of the IIO default configfs groups is the "triggers" group. It is
automagically accessible when the configfs is mounted and can be found
@@ -31,40 +36,40 @@ under /config/iio/triggers.
IIO software triggers implementation offers support for creating multiple
trigger types. A new trigger type is usually implemented as a separate
-kernel module following the interface in include/linux/iio/sw_trigger.h:
+kernel module following the interface in include/linux/iio/sw_trigger.h::
-/*
- * drivers/iio/trigger/iio-trig-sample.c
- * sample kernel module implementing a new trigger type
- */
-#include <linux/iio/sw_trigger.h>
+ /*
+ * drivers/iio/trigger/iio-trig-sample.c
+ * sample kernel module implementing a new trigger type
+ */
+ #include <linux/iio/sw_trigger.h>
-static struct iio_sw_trigger *iio_trig_sample_probe(const char *name)
-{
+ static struct iio_sw_trigger *iio_trig_sample_probe(const char *name)
+ {
/*
* This allocates and registers an IIO trigger plus other
* trigger type specific initialization.
*/
-}
+ }
-static int iio_trig_hrtimer_remove(struct iio_sw_trigger *swt)
-{
+ static int iio_trig_hrtimer_remove(struct iio_sw_trigger *swt)
+ {
/*
* This undoes the actions in iio_trig_sample_probe
*/
-}
+ }
-static const struct iio_sw_trigger_ops iio_trig_sample_ops = {
+ static const struct iio_sw_trigger_ops iio_trig_sample_ops = {
.probe = iio_trig_sample_probe,
.remove = iio_trig_sample_remove,
-};
+ };
-static struct iio_sw_trigger_type iio_trig_sample = {
+ static struct iio_sw_trigger_type iio_trig_sample = {
.name = "trig-sample",
.owner = THIS_MODULE,
.ops = &iio_trig_sample_ops,
-};
+ };
module_iio_sw_trigger_driver(iio_trig_sample);
@@ -73,21 +78,24 @@ iio-trig-sample module will create 'trig-sample' trigger type directory
/config/iio/triggers/trig-sample.
We support the following interrupt sources (trigger types):
+
* hrtimer, uses high resolution timers as interrupt source
3.1 Hrtimer triggers creation and destruction
+---------------------------------------------
Loading iio-trig-hrtimer module will register hrtimer trigger types allowing
users to create hrtimer triggers under /config/iio/triggers/hrtimer.
-e.g:
+e.g::
-$ mkdir /config/iio/triggers/hrtimer/instance1
-$ rmdir /config/iio/triggers/hrtimer/instance1
+ $ mkdir /config/iio/triggers/hrtimer/instance1
+ $ rmdir /config/iio/triggers/hrtimer/instance1
Each trigger can have one or more attributes specific to the trigger type.
3.2 "hrtimer" trigger types attributes
+--------------------------------------
"hrtimer" trigger type doesn't have any configurable attribute from /config dir.
It does introduce the sampling_frequency attribute to trigger directory.
diff --git a/Documentation/iio/index.rst b/Documentation/iio/index.rst
new file mode 100644
index 000000000000..0593dca89a94
--- /dev/null
+++ b/Documentation/iio/index.rst
@@ -0,0 +1,12 @@
+:orphan:
+
+==============
+Industrial I/O
+==============
+
+.. toctree::
+ :maxdepth: 1
+
+ iio_configfs
+
+ ep93xx_adc
diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig
index 1d736a4952ab..5bd51853b15e 100644
--- a/drivers/iio/Kconfig
+++ b/drivers/iio/Kconfig
@@ -28,7 +28,7 @@ config IIO_CONFIGFS
help
This allows configuring various IIO bits through configfs
(e.g. software triggers). For more info see
- Documentation/iio/iio_configfs.txt.
+ Documentation/iio/iio_configfs.rst.
config IIO_TRIGGER
bool "Enable triggered sampling support"
--
2.21.0
On Tue, 18 Jun 2019 17:53:40 -0300
Mauro Carvalho Chehab <[email protected]> wrote:
> Rename the iio documentation files to ReST, add an
> index for them and adjust in order to produce a nice html
> output via the Sphinx build system.
>
> At its new index.rst, let's add a :orphan: while this is not linked to
> the main index.rst file, in order to avoid build warnings.
>
> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
> Acked-by: Jonathan Cameron <[email protected]>
I'll take this via IIO.
Applied to the togreg branch of iio.git and pushed out as testing.
I'll probably do a pull request to Greg tomorrow and these will hopefully
turn up in linux-next not long after that.
Thanks Mauro!
Jonathan
> ---
> .../iio/{ep93xx_adc.txt => ep93xx_adc.rst} | 15 +++++-
> .../{iio_configfs.txt => iio_configfs.rst} | 52 +++++++++++--------
> Documentation/iio/index.rst | 12 +++++
> drivers/iio/Kconfig | 2 +-
> 4 files changed, 56 insertions(+), 25 deletions(-)
> rename Documentation/iio/{ep93xx_adc.txt => ep93xx_adc.rst} (71%)
> rename Documentation/iio/{iio_configfs.txt => iio_configfs.rst} (73%)
> create mode 100644 Documentation/iio/index.rst
>
> diff --git a/Documentation/iio/ep93xx_adc.txt b/Documentation/iio/ep93xx_adc.rst
> similarity index 71%
> rename from Documentation/iio/ep93xx_adc.txt
> rename to Documentation/iio/ep93xx_adc.rst
> index 23053e7817bd..4fd8dea3f6b8 100644
> --- a/Documentation/iio/ep93xx_adc.txt
> +++ b/Documentation/iio/ep93xx_adc.rst
> @@ -1,12 +1,16 @@
> -Cirrus Logic EP93xx ADC driver.
> +==============================
> +Cirrus Logic EP93xx ADC driver
> +==============================
>
> 1. Overview
> +===========
>
> The driver is intended to work on both low-end (EP9301, EP9302) devices with
> 5-channel ADC and high-end (EP9307, EP9312, EP9315) devices with 10-channel
> touchscreen/ADC module.
>
> 2. Channel numbering
> +====================
>
> Numbering scheme for channels 0..4 is defined in EP9301 and EP9302 datasheets.
> EP9307, EP9312 and EP9312 have 3 channels more (total 8), but the numbering is
> @@ -17,13 +21,20 @@ Assuming ep93xx_adc is IIO device0, you'd find the following entries under
>
> +-----------------+---------------+
> | sysfs entry | ball/pin name |
> - +-----------------+---------------+
> + +=================+===============+
> | in_voltage0_raw | YM |
> + +-----------------+---------------+
> | in_voltage1_raw | SXP |
> + +-----------------+---------------+
> | in_voltage2_raw | SXM |
> + +-----------------+---------------+
> | in_voltage3_raw | SYP |
> + +-----------------+---------------+
> | in_voltage4_raw | SYM |
> + +-----------------+---------------+
> | in_voltage5_raw | XP |
> + +-----------------+---------------+
> | in_voltage6_raw | XM |
> + +-----------------+---------------+
> | in_voltage7_raw | YP |
> +-----------------+---------------+
> diff --git a/Documentation/iio/iio_configfs.txt b/Documentation/iio/iio_configfs.rst
> similarity index 73%
> rename from Documentation/iio/iio_configfs.txt
> rename to Documentation/iio/iio_configfs.rst
> index 4e5f101837a8..ecbfdb3afef7 100644
> --- a/Documentation/iio/iio_configfs.txt
> +++ b/Documentation/iio/iio_configfs.rst
> @@ -1,6 +1,9 @@
> +===============================
> Industrial IIO configfs support
> +===============================
>
> 1. Overview
> +===========
>
> Configfs is a filesystem-based manager of kernel objects. IIO uses some
> objects that could be easily configured using configfs (e.g.: devices,
> @@ -10,20 +13,22 @@ See Documentation/filesystems/configfs/configfs.txt for more information
> about how configfs works.
>
> 2. Usage
> +========
>
> In order to use configfs support in IIO we need to select it at compile
> time via CONFIG_IIO_CONFIGFS config option.
>
> -Then, mount the configfs filesystem (usually under /config directory):
> +Then, mount the configfs filesystem (usually under /config directory)::
>
> -$ mkdir /config
> -$ mount -t configfs none /config
> + $ mkdir /config
> + $ mount -t configfs none /config
>
> At this point, all default IIO groups will be created and can be accessed
> under /config/iio. Next chapters will describe available IIO configuration
> objects.
>
> 3. Software triggers
> +====================
>
> One of the IIO default configfs groups is the "triggers" group. It is
> automagically accessible when the configfs is mounted and can be found
> @@ -31,40 +36,40 @@ under /config/iio/triggers.
>
> IIO software triggers implementation offers support for creating multiple
> trigger types. A new trigger type is usually implemented as a separate
> -kernel module following the interface in include/linux/iio/sw_trigger.h:
> +kernel module following the interface in include/linux/iio/sw_trigger.h::
>
> -/*
> - * drivers/iio/trigger/iio-trig-sample.c
> - * sample kernel module implementing a new trigger type
> - */
> -#include <linux/iio/sw_trigger.h>
> + /*
> + * drivers/iio/trigger/iio-trig-sample.c
> + * sample kernel module implementing a new trigger type
> + */
> + #include <linux/iio/sw_trigger.h>
>
>
> -static struct iio_sw_trigger *iio_trig_sample_probe(const char *name)
> -{
> + static struct iio_sw_trigger *iio_trig_sample_probe(const char *name)
> + {
> /*
> * This allocates and registers an IIO trigger plus other
> * trigger type specific initialization.
> */
> -}
> + }
>
> -static int iio_trig_hrtimer_remove(struct iio_sw_trigger *swt)
> -{
> + static int iio_trig_hrtimer_remove(struct iio_sw_trigger *swt)
> + {
> /*
> * This undoes the actions in iio_trig_sample_probe
> */
> -}
> + }
>
> -static const struct iio_sw_trigger_ops iio_trig_sample_ops = {
> + static const struct iio_sw_trigger_ops iio_trig_sample_ops = {
> .probe = iio_trig_sample_probe,
> .remove = iio_trig_sample_remove,
> -};
> + };
>
> -static struct iio_sw_trigger_type iio_trig_sample = {
> + static struct iio_sw_trigger_type iio_trig_sample = {
> .name = "trig-sample",
> .owner = THIS_MODULE,
> .ops = &iio_trig_sample_ops,
> -};
> + };
>
> module_iio_sw_trigger_driver(iio_trig_sample);
>
> @@ -73,21 +78,24 @@ iio-trig-sample module will create 'trig-sample' trigger type directory
> /config/iio/triggers/trig-sample.
>
> We support the following interrupt sources (trigger types):
> +
> * hrtimer, uses high resolution timers as interrupt source
>
> 3.1 Hrtimer triggers creation and destruction
> +---------------------------------------------
>
> Loading iio-trig-hrtimer module will register hrtimer trigger types allowing
> users to create hrtimer triggers under /config/iio/triggers/hrtimer.
>
> -e.g:
> +e.g::
>
> -$ mkdir /config/iio/triggers/hrtimer/instance1
> -$ rmdir /config/iio/triggers/hrtimer/instance1
> + $ mkdir /config/iio/triggers/hrtimer/instance1
> + $ rmdir /config/iio/triggers/hrtimer/instance1
>
> Each trigger can have one or more attributes specific to the trigger type.
>
> 3.2 "hrtimer" trigger types attributes
> +--------------------------------------
>
> "hrtimer" trigger type doesn't have any configurable attribute from /config dir.
> It does introduce the sampling_frequency attribute to trigger directory.
> diff --git a/Documentation/iio/index.rst b/Documentation/iio/index.rst
> new file mode 100644
> index 000000000000..0593dca89a94
> --- /dev/null
> +++ b/Documentation/iio/index.rst
> @@ -0,0 +1,12 @@
> +:orphan:
> +
> +==============
> +Industrial I/O
> +==============
> +
> +.. toctree::
> + :maxdepth: 1
> +
> + iio_configfs
> +
> + ep93xx_adc
> diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig
> index 1d736a4952ab..5bd51853b15e 100644
> --- a/drivers/iio/Kconfig
> +++ b/drivers/iio/Kconfig
> @@ -28,7 +28,7 @@ config IIO_CONFIGFS
> help
> This allows configuring various IIO bits through configfs
> (e.g. software triggers). For more info see
> - Documentation/iio/iio_configfs.txt.
> + Documentation/iio/iio_configfs.rst.
>
> config IIO_TRIGGER
> bool "Enable triggered sampling support"