Messages in this thread Patch in this message | | | Date | Wed, 23 May 2012 00:23:58 +0200 (CEST) | From | Guennadi Liakhovetski <> | Subject | [PATCH] pinctrl: add a pinctrl_mux_group_selected() function |
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This patch adds a new function to allow clients to verify, whether a certain group is selected in the currently active setting or not.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> ---
Maybe there is already a way to do this without adding a new function, I haven't found one, hence this patch.
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index ec3b8cc18..4e768d4 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -310,6 +310,32 @@ void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev, EXPORT_SYMBOL_GPL(pinctrl_remove_gpio_range); /** + * pinctrl_mux_group_selected() - check, whether a group is currently selected + */ +bool pinctrl_mux_group_selected(struct pinctrl *p, const char *group) +{ + struct pinctrl_setting *setting; + + list_for_each_entry(setting, &p->state->settings, node) { + struct pinctrl_dev *pctldev = setting->pctldev; + const struct pinctrl_ops *ops = pctldev->desc->pctlops; + const char *gname; + + if (setting->type != PIN_MAP_TYPE_MUX_GROUP) + continue; + + gname = ops->get_group_name(pctldev, setting->data.mux.group); + if (!strcmp(gname, group)) { + dev_dbg(setting->pctldev->dev, "%s(): group %s found\n", __func__, group); + return true; + } + } + pr_debug("%s(): group %s not found\n", __func__, group); + return false; +} +EXPORT_SYMBOL_GPL(pinctrl_mux_group_selected); + +/** * pinctrl_get_group_selector() - returns the group selector for a group * @pctldev: the pin controller handling the group * @pin_group: the pin group to look up diff --git a/include/linux/pinctrl/consumer.h b/include/linux/pinctrl/consumer.h index 191e726..31d6c6f 100644 --- a/include/linux/pinctrl/consumer.h +++ b/include/linux/pinctrl/consumer.h @@ -35,6 +35,7 @@ extern struct pinctrl_state * __must_check pinctrl_lookup_state( struct pinctrl *p, const char *name); extern int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *s); +extern bool pinctrl_mux_group_selected(struct pinctrl *p, const char *group); extern struct pinctrl * __must_check devm_pinctrl_get(struct device *dev); extern void devm_pinctrl_put(struct pinctrl *p);
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