diff options
Diffstat (limited to 'drivers/pinctrl/core.c')
| -rw-r--r-- | drivers/pinctrl/core.c | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index 92f86ab30a1..e09474ecde2 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -462,6 +462,23 @@ struct pinctrl_dev *pinctrl_find_and_add_gpio_range(const char *devname, } EXPORT_SYMBOL_GPL(pinctrl_find_and_add_gpio_range); +int pinctrl_get_group_pins(struct pinctrl_dev *pctldev, const char *pin_group, + const unsigned **pins, unsigned *num_pins) +{ + const struct pinctrl_ops *pctlops = pctldev->desc->pctlops; + int gs; + + if (!pctlops->get_group_pins) + return -EINVAL; + + gs = pinctrl_get_group_selector(pctldev, pin_group); + if (gs < 0) + return gs; + + return pctlops->get_group_pins(pctldev, gs, pins, num_pins); +} +EXPORT_SYMBOL_GPL(pinctrl_get_group_pins); + /** * pinctrl_find_gpio_range_from_pin() - locate the GPIO range for a pin * @pctldev: the pin controller device to look in @@ -837,7 +854,9 @@ static struct pinctrl *create_pinctrl(struct device *dev) kref_init(&p->users); /* Add the pinctrl handle to the global list */ + mutex_lock(&pinctrl_list_mutex); list_add_tail(&p->node, &pinctrl_list); + mutex_unlock(&pinctrl_list_mutex); return p; } @@ -1346,15 +1365,16 @@ static int pinctrl_groups_show(struct seq_file *s, void *what) seq_puts(s, "registered pin groups:\n"); while (selector < ngroups) { - const unsigned *pins; - unsigned num_pins; + const unsigned *pins = NULL; + unsigned num_pins = 0; const char *gname = ops->get_group_name(pctldev, selector); const char *pname; - int ret; + int ret = 0; int i; - ret = ops->get_group_pins(pctldev, selector, - &pins, &num_pins); + if (ops->get_group_pins) + ret = ops->get_group_pins(pctldev, selector, + &pins, &num_pins); if (ret) seq_printf(s, "%s [ERROR GETTING PINS]\n", gname); @@ -1628,8 +1648,10 @@ static void pinctrl_init_device_debugfs(struct pinctrl_dev *pctldev) device_root, pctldev, &pinctrl_groups_ops); debugfs_create_file("gpio-ranges", S_IFREG | S_IRUGO, device_root, pctldev, &pinctrl_gpioranges_ops); - pinmux_init_device_debugfs(device_root, pctldev); - pinconf_init_device_debugfs(device_root, pctldev); + if (pctldev->desc->pmxops) + pinmux_init_device_debugfs(device_root, pctldev); + if (pctldev->desc->confops) + pinconf_init_device_debugfs(device_root, pctldev); } static void pinctrl_remove_device_debugfs(struct pinctrl_dev *pctldev) @@ -1676,8 +1698,7 @@ static int pinctrl_check_ops(struct pinctrl_dev *pctldev) if (!ops || !ops->get_groups_count || - !ops->get_group_name || - !ops->get_group_pins) + !ops->get_group_name) return -EINVAL; if (ops->dt_node_to_map && !ops->dt_free_map) |