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Documentation: gpio: driver.rst: Fix warnings

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Fix warnings due to incorrect rst markup. Also improved the presentation
a little without changing the underlying content.

Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com>
Link: https://lore.kernel.org/r/20191122034702.58563-1-dwlsalmeida@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Daniel W. S. Almeida 2019-11-22 00:47:02 -03:00 committed by Linus Walleij
parent 808b9931d5
commit 4e29b70d54
1 changed files with 12 additions and 9 deletions
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21
Documentation/driver-api/gpio/driver.rst
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@ -5,7 +5,7 @@ GPIO Driver Interface
This document serves as a guide for writers of GPIO chip drivers.
Each GPIO controller driver needs to include the following header, which defines
the structures used to define a GPIO driver:
the structures used to define a GPIO driver::
#include <linux/gpio/driver.h>
@ -398,12 +398,15 @@ provided. A big portion of overhead code will be managed by gpiolib,
under the assumption that your interrupts are 1-to-1-mapped to the
GPIO line index:
GPIO line offset Hardware IRQ
0 0
1 1
2 2
... ...
ngpio-1 ngpio-1
.. csv-table::
:header: GPIO line offset, Hardware IRQ
0,0
1,1
2,2
...,...
ngpio-1, ngpio-1
If some GPIO lines do not have corresponding IRQs, the bitmask valid_mask
and the flag need_valid_mask in gpio_irq_chip can be used to mask off some
@ -413,7 +416,7 @@ The preferred way to set up the helpers is to fill in the
struct gpio_irq_chip inside struct gpio_chip before adding the gpio_chip.
If you do this, the additional irq_chip will be set up by gpiolib at the
same time as setting up the rest of the GPIO functionality. The following
is a typical example of a cascaded interrupt handler using gpio_irq_chip:
is a typical example of a cascaded interrupt handler using gpio_irq_chip::
.. code-block:: c
@ -450,7 +453,7 @@ is a typical example of a cascaded interrupt handler using gpio_irq_chip:
return devm_gpiochip_add_data(dev, &g->gc, g);
The helper support using hierarchical interrupt controllers as well.
In this case the typical set-up will look like this:
In this case the typical set-up will look like this::
.. code-block:: c