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authorLaurent Meunier <laurent.meunier@st.com>2013-02-06 12:09:44 +0400
committerLinus Walleij <linus.walleij@linaro.org>2013-02-11 00:11:54 +0400
commit6f9e41f4e673bf9ae6a5c0831b1524a91ea1c440 (patch)
tree9cff86fdcbbefdbca5520cc1746163d7ad9534a6 /drivers/pinctrl/core.h
parent007cd694332e6d5f57ef76431d2372c958b85a21 (diff)
downloadlinux-6f9e41f4e673bf9ae6a5c0831b1524a91ea1c440.tar.xz
pinctrl/pinconfig: add debug interface
This update adds a debugfs interface to modify a pin configuration for a given state in the pinctrl map. This allows to modify the configuration for a non-active state, typically sleep state. This configuration is not applied right away, but only when the state will be entered. This solution is mandated for us by HW validation: in order to test and verify several pin configurations during sleep without recompiling the software. Signed-off-by: Laurent Meunier <laurent.meunier@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/core.h')
-rw-r--r--drivers/pinctrl/core.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/pinctrl/core.h b/drivers/pinctrl/core.h
index fdd350d639f6..ee72f1f6d862 100644
--- a/drivers/pinctrl/core.h
+++ b/drivers/pinctrl/core.h
@@ -155,6 +155,18 @@ struct pin_desc {
#endif
};
+/**
+ * struct pinctrl_maps - a list item containing part of the mapping table
+ * @node: mapping table list node
+ * @maps: array of mapping table entries
+ * @num_maps: the number of entries in @maps
+ */
+struct pinctrl_maps {
+ struct list_head node;
+ struct pinctrl_map const *maps;
+ unsigned num_maps;
+};
+
struct pinctrl_dev *get_pinctrl_dev_from_devname(const char *dev_name);
int pin_get_from_name(struct pinctrl_dev *pctldev, const char *name);
const char *pin_get_name(struct pinctrl_dev *pctldev, const unsigned pin);
@@ -176,3 +188,10 @@ extern int pinctrl_force_default(struct pinctrl_dev *pctldev);
extern struct mutex pinctrl_mutex;
extern struct list_head pinctrldev_list;
+extern struct list_head pinctrl_maps;
+
+#define for_each_maps(_maps_node_, _i_, _map_) \
+ list_for_each_entry(_maps_node_, &pinctrl_maps, node) \
+ for (_i_ = 0, _map_ = &_maps_node_->maps[_i_]; \
+ _i_ < _maps_node_->num_maps; \
+ _i_++, _map_ = &_maps_node_->maps[_i_])