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| author | Laurent Meunier <laurent.meunier@st.com> | 2013-04-18 10:48:07 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-04-19 15:45:05 +0200 |
| commit | f07512e615dd8ebd0866efc38b39ccd41f1495d8 (patch) | |
| tree | 3c50418dad838e31f5f870a6d4d57ab4d7f8f20b /include/linux/pinctrl | |
| parent | 06b62d82146fed98fcb846c4d93d85f1dea5d36a (diff) | |
| download | linux-rpi-f07512e615dd8ebd0866efc38b39ccd41f1495d8.tar.gz linux-rpi-f07512e615dd8ebd0866efc38b39ccd41f1495d8.tar.bz2 linux-rpi-f07512e615dd8ebd0866efc38b39ccd41f1495d8.zip | |
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.
Change log in this patch set;
Take into account latest feedback from Stephen Warren:
- stale comments update
- improved code efficiency and readibility
- limit size of global variable pinconf_dbg_conf
- remove req_type as it can easily be added later when
add/delete requests support is implemented
Signed-off-by: Laurent Meunier <laurent.meunier@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/pinctrl')
| -rw-r--r-- | include/linux/pinctrl/pinconf.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/pinctrl/pinconf.h b/include/linux/pinctrl/pinconf.h index e7a720104a47..1ad4f31ef6b8 100644 --- a/include/linux/pinctrl/pinconf.h +++ b/include/linux/pinctrl/pinconf.h @@ -14,6 +14,8 @@ #ifdef CONFIG_PINCONF +#include <linux/pinctrl/machine.h> + struct pinctrl_dev; struct seq_file; @@ -28,6 +30,7 @@ struct seq_file; * @pin_config_set: configure an individual pin * @pin_config_group_get: get configurations for an entire pin group * @pin_config_group_set: configure all pins in a group + * @pin_config_group_dbg_set: optional debugfs to modify a pin configuration * @pin_config_dbg_show: optional debugfs display hook that will provide * per-device info for a certain pin in debugfs * @pin_config_group_dbg_show: optional debugfs display hook that will provide @@ -51,6 +54,9 @@ struct pinconf_ops { int (*pin_config_group_set) (struct pinctrl_dev *pctldev, unsigned selector, unsigned long config); + int (*pin_config_dbg_parse_modify) (struct pinctrl_dev *pctldev, + const char *arg, + unsigned long *config); void (*pin_config_dbg_show) (struct pinctrl_dev *pctldev, struct seq_file *s, unsigned offset); |