They have the same functionalities as irq_domain_add_{linear, tree},
except fro accepting different first argument.
Signed-off-by: Jianyu Zhan <[email protected]>
---
Documentation/IRQ-domain.txt | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/Documentation/IRQ-domain.txt b/Documentation/IRQ-domain.txt
index 8d990bd..89dda22 100644
--- a/Documentation/IRQ-domain.txt
+++ b/Documentation/IRQ-domain.txt
@@ -70,6 +70,7 @@ of the reverse map types are described below:
==== Linear ====
irq_domain_add_linear()
+irq_domain_create_linear()
The linear reverse map maintains a fixed size table indexed by the
hwirq number. When a hwirq is mapped, an irq_desc is allocated for
@@ -81,10 +82,16 @@ map are fixed time lookup for IRQ numbers, and irq_descs are only
allocated for in-use IRQs. The disadvantage is that the table must be
as large as the largest possible hwirq number.
+irq_domain_add_linear() and irq_domain_create_linear() are functionally
+equivalent, except for the first argument is different - the former
+accepts an Open Firmware specific 'struct device_node', while the latter
+accepts a more general abstration 'struct fwnode_handle'.
+
The majority of drivers should use the linear map.
==== Tree ====
irq_domain_add_tree()
+irq_domain_create_tree()
The irq_domain maintains a radix tree map from hwirq numbers to Linux
IRQs. When an hwirq is mapped, an irq_desc is allocated and the
@@ -95,6 +102,11 @@ since it doesn't need to allocate a table as large as the largest
hwirq number. The disadvantage is that hwirq to IRQ number lookup is
dependent on how many entries are in the table.
+irq_domain_add_tree() and irq_domain_create_tree() are functionally
+equivalent, except for the first argument is different - the former
+accepts an Open Firmware specific 'struct device_node', while the latter
+accepts a more general abstration 'struct fwnode_handle'.
+
Very few drivers should need this mapping.
==== No Map ===-
--
2.4.3
On 03/26/16 06:07, Jianyu Zhan wrote:
> They have the same functionalities as irq_domain_add_{linear, tree},
> except fro accepting different first argument.
>
> Signed-off-by: Jianyu Zhan <[email protected]>
> ---
> Documentation/IRQ-domain.txt | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/Documentation/IRQ-domain.txt b/Documentation/IRQ-domain.txt
> index 8d990bd..89dda22 100644
> --- a/Documentation/IRQ-domain.txt
> +++ b/Documentation/IRQ-domain.txt
> @@ -70,6 +70,7 @@ of the reverse map types are described below:
>
> ==== Linear ====
> irq_domain_add_linear()
> +irq_domain_create_linear()
>
> The linear reverse map maintains a fixed size table indexed by the
> hwirq number. When a hwirq is mapped, an irq_desc is allocated for
> @@ -81,10 +82,16 @@ map are fixed time lookup for IRQ numbers, and irq_descs are only
> allocated for in-use IRQs. The disadvantage is that the table must be
> as large as the largest possible hwirq number.
>
> +irq_domain_add_linear() and irq_domain_create_linear() are functionally
> +equivalent, except for the first argument is different - the former
> +accepts an Open Firmware specific 'struct device_node', while the latter
> +accepts a more general abstration 'struct fwnode_handle'.
abstraction
> +
> The majority of drivers should use the linear map.
>
> ==== Tree ====
> irq_domain_add_tree()
> +irq_domain_create_tree()
>
> The irq_domain maintains a radix tree map from hwirq numbers to Linux
> IRQs. When an hwirq is mapped, an irq_desc is allocated and the
> @@ -95,6 +102,11 @@ since it doesn't need to allocate a table as large as the largest
> hwirq number. The disadvantage is that hwirq to IRQ number lookup is
> dependent on how many entries are in the table.
>
> +irq_domain_add_tree() and irq_domain_create_tree() are functionally
> +equivalent, except for the first argument is different - the former
> +accepts an Open Firmware specific 'struct device_node', while the latter
> +accepts a more general abstration 'struct fwnode_handle'.
ditto
> +
> Very few drivers should need this mapping.
>
> ==== No Map ===-
>
--
~Randy
They have the same functionalities as irq_domain_add_{linear, tree},
except fro accepting different first argument.
Signed-off-by: Jianyu Zhan <[email protected]>
---
v1->v2:
Fix spelling error.
Documentation/IRQ-domain.txt | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/Documentation/IRQ-domain.txt b/Documentation/IRQ-domain.txt
index 8d990bd..89dda22 100644
--- a/Documentation/IRQ-domain.txt
+++ b/Documentation/IRQ-domain.txt
@@ -70,6 +70,7 @@ of the reverse map types are described below:
==== Linear ====
irq_domain_add_linear()
+irq_domain_create_linear()
The linear reverse map maintains a fixed size table indexed by the
hwirq number. When a hwirq is mapped, an irq_desc is allocated for
@@ -81,10 +82,16 @@ map are fixed time lookup for IRQ numbers, and irq_descs are only
allocated for in-use IRQs. The disadvantage is that the table must be
as large as the largest possible hwirq number.
+irq_domain_add_linear() and irq_domain_create_linear() are functionally
+equivalent, except for the first argument is different - the former
+accepts an Open Firmware specific 'struct device_node', while the latter
+accepts a more general abstraction 'struct fwnode_handle'.
+
The majority of drivers should use the linear map.
==== Tree ====
irq_domain_add_tree()
+irq_domain_create_tree()
The irq_domain maintains a radix tree map from hwirq numbers to Linux
IRQs. When an hwirq is mapped, an irq_desc is allocated and the
@@ -95,6 +102,11 @@ since it doesn't need to allocate a table as large as the largest
hwirq number. The disadvantage is that hwirq to IRQ number lookup is
dependent on how many entries are in the table.
+irq_domain_add_tree() and irq_domain_create_tree() are functionally
+equivalent, except for the first argument is different - the former
+accepts an Open Firmware specific 'struct device_node', while the latter
+accepts a more general abstraction 'struct fwnode_handle'.
+
Very few drivers should need this mapping.
==== No Map ===-
--
2.4.3
On 27/03/16 04:51, Jianyu Zhan wrote:
> They have the same functionalities as irq_domain_add_{linear, tree},
> except fro accepting different first argument.
>
> Signed-off-by: Jianyu Zhan <[email protected]>
> ---
> v1->v2:
> Fix spelling error.
>
> Documentation/IRQ-domain.txt | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
Acked-by: Marc Zyngier <[email protected]>
M.
--
Jazz is not dead. It just smells funny...
On Sun, 27 Mar 2016 11:51:20 +0800
Jianyu Zhan <[email protected]> wrote:
> They have the same functionalities as irq_domain_add_{linear, tree},
> except fro accepting different first argument.
>
> Signed-off-by: Jianyu Zhan <[email protected]>
> ---
> v1->v2:
> Fix spelling error.
Applied to the docs tree, thanks.
jon