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| author | Laurent Meunier <laurent.meunier@st.com> | 2013-02-06 09:09:44 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-02-10 21:11:54 +0100 |
| commit | 6f9e41f4e673bf9ae6a5c0831b1524a91ea1c440 (patch) | |
| tree | 9cff86fdcbbefdbca5520cc1746163d7ad9534a6 /drivers/pinctrl/core.h | |
| parent | 007cd694332e6d5f57ef76431d2372c958b85a21 (diff) | |
| download | linux-6f9e41f4e673bf9ae6a5c0831b1524a91ea1c440.tar.bz2 | |
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.h | 19 |
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_]) |