xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

pinctrl: changes hog mechanism to be self-referential

Browse Source 
Instead of a specific boolean field to indicate if a map entry shall
be hogged, treat self-reference as an indication of desired hogging.
This drops one field off the map struct and has a nice Douglas R.
Hofstadter-feel to it.

Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij
2012-02-10 01:34:12 +01:00
parent befe5bdfbb
commit 77a5988355
3 changed files with 12 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
include/linux/pinctrl/machine.h
View File

@@ -26,13 +26,9 @@
* selects a certain specific pin group to activate for the function, if
* left as NULL, the first applicable group will be used
* @dev_name: the name of the device using this specific mapping, the name
* must be the same as in your struct device*
* @hog_on_boot: if this is set to true, the pin control subsystem will itself
* hog the mappings as the pinmux device drivers are attached, so this is
* typically used with system maps (mux mappings without an assigned
* device) that you want to get hogged and enabled by default as soon as
* a pinmux device supporting it is registered. These maps will not be
* disabled and put until the system shuts down.
* must be the same as in your struct device*. If this name is set to the
* same name as the pin controllers own dev_name(), the map entry will be
* hogged by the driver itself upon registration
*/
struct pinctrl_map {
const char *name;
@@ -40,7 +36,6 @@ struct pinctrl_map {
const char *function;
const char *group;
const char *dev_name;
bool hog_on_boot;
};
/*
@@ -62,8 +57,7 @@ struct pinctrl_map {
* to be hogged by the pin control core until the system shuts down.
*/
#define PIN_MAP_SYS_HOG(a, b, c) \
{ .name = a, .ctrl_dev_name = b, .function = c, \
.hog_on_boot = true }
{ .name = a, .ctrl_dev_name = b, .dev_name = b, .function = c, }
/*
* Convenience macro to map a system function onto a certain pinctrl device
@@ -71,8 +65,8 @@ struct pinctrl_map {
* system shuts down.
*/
#define PIN_MAP_SYS_HOG_GROUP(a, b, c, d) \
{ .name = a, .ctrl_dev_name = b, .function = c, .group = d, \
.hog_on_boot = true }
{ .name = a, .ctrl_dev_name = b, .dev_name = b, .function = c, \
.group = d, }
#ifdef CONFIG_PINMUX