pinctrl: cherryview: add handlers for pin_config_group_get/set

Pin config get/set handlers for pin groups were previously not
implemented by this driver.  The pin_config_group_set is
particularly useful for applying a common config setting to all
pins in a specified group with a single call, without the caller
needing to reference each individual pin by name.

Signed-off-by: Dan O'Donovan <dan@emutex.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/intel/pinctrl-cherryview.c b/drivers/pinctrl/intel/pinctrl-cherryview.c
index 7b3f147279c82653ff5b319783e411e8461c4527..5749a4eee746da45fdef1d4f39cabab607160408 100644 (file)
--- a/drivers/pinctrl/intel/pinctrl-cherryview.c
+++ b/drivers/pinctrl/intel/pinctrl-cherryview.c
@@ -1176,10 +1176,52 @@ static int chv_config_set(struct pinctrl_dev *pctldev, unsigned pin,
        return 0;
 }
 
+static int chv_config_group_get(struct pinctrl_dev *pctldev,
+                               unsigned int group,
+                               unsigned long *config)
+{
+       const unsigned int *pins;
+       unsigned int npins;
+       int ret;
+
+       ret = chv_get_group_pins(pctldev, group, &pins, &npins);
+       if (ret)
+               return ret;
+
+       ret = chv_config_get(pctldev, pins[0], config);
+       if (ret)
+               return ret;
+
+       return 0;
+}
+
+static int chv_config_group_set(struct pinctrl_dev *pctldev,
+                               unsigned int group, unsigned long *configs,
+                               unsigned int num_configs)
+{
+       const unsigned int *pins;
+       unsigned int npins;
+       int i, ret;
+
+       ret = chv_get_group_pins(pctldev, group, &pins, &npins);
+       if (ret)
+               return ret;
+
+       for (i = 0; i < npins; i++) {
+               ret = chv_config_set(pctldev, pins[i], configs, num_configs);
+               if (ret)
+                       return ret;
+       }
+
+       return 0;
+}
+
 static const struct pinconf_ops chv_pinconf_ops = {
        .is_generic = true,
        .pin_config_set = chv_config_set,
        .pin_config_get = chv_config_get,
+       .pin_config_group_get = chv_config_group_get,
+       .pin_config_group_set = chv_config_group_set,
 };
 
 static struct pinctrl_desc chv_pinctrl_desc = {