pinctrl: move strict option to pinmux_ops

While the pinmux_ops are ideally just a vtable for pin mux
calls, the "strict" setting belongs so intuitively with the
pin multiplexing that we should move it here anyway. Putting
it in the top pinctrl_desc makes no sense.

Cc: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/pinctrl.txt

@@ -73,7 +73,6 @@ static struct pinctrl_desc foo_desc = {
 	.pins = foo_pins,
 	.npins = ARRAY_SIZE(foo_pins),
 	.owner = THIS_MODULE,
-	.strict = true,
 };
 
 int __init foo_probe(void)
@@ -715,6 +714,7 @@ static struct pinmux_ops foo_pmxops = {
 	.get_function_name = foo_get_fname,
 	.get_function_groups = foo_get_groups,
 	.set_mux = foo_set_mux,
+	.strict = true,
 };
 
 /* Pinmux operations are handled by some pin controller */

drivers/pinctrl/pinctrl-adi2.c

@@ -703,14 +703,14 @@ static struct pinmux_ops adi_pinmux_ops = {
 	.get_function_name = adi_pinmux_get_func_name,
 	.get_function_groups = adi_pinmux_get_groups,
 	.gpio_request_enable = adi_pinmux_request_gpio,
+	.strict = true,
 };
 
 
 static struct pinctrl_desc adi_pinmux_desc = {
 	.name = DRIVER_NAME,
 	.pctlops = &adi_pctrl_ops,
 	.pmxops = &adi_pinmux_ops,
-	.strict = true,
 	.owner = THIS_MODULE,
 };
 

drivers/pinctrl/pinmux.c

@@ -107,7 +107,7 @@ static int pin_request(struct pinctrl_dev *pctldev,
 				desc->name, desc->gpio_owner, owner);
 			goto out;
 		}
-		if (pctldev->desc->strict && desc->mux_usecount &&
+		if (ops->strict && desc->mux_usecount &&
 		    strcmp(desc->mux_owner, owner)) {
 			dev_err(pctldev->dev,
 				"pin %s already requested by %s; cannot claim for %s\n",
@@ -123,7 +123,7 @@ static int pin_request(struct pinctrl_dev *pctldev,
 				desc->name, desc->mux_owner, owner);
 			goto out;
 		}
-		if (pctldev->desc->strict && desc->gpio_owner) {
+		if (ops->strict && desc->gpio_owner) {
 			dev_err(pctldev->dev,
 				"pin %s already requested by %s; cannot claim for %s\n",
 				desc->name, desc->gpio_owner, owner);

include/linux/pinctrl/pinctrl.h

@@ -114,8 +114,6 @@ struct pinctrl_ops {
  *	of the pins field above
  * @pctlops: pin control operation vtable, to support global concepts like
  *	grouping of pins, this is optional.
- * @strict: check both gpio_owner and mux_owner strictly before approving
-	the pin request
  * @pmxops: pinmux operations vtable, if you support pinmuxing in your driver
  * @confops: pin config operations vtable, if you support pin configuration in
  *	your driver
@@ -134,7 +132,6 @@ struct pinctrl_desc {
 	const struct pinctrl_ops *pctlops;
 	const struct pinmux_ops *pmxops;
 	const struct pinconf_ops *confops;
-	bool strict;
 	struct module *owner;
 #ifdef CONFIG_GENERIC_PINCONF
 	unsigned int num_custom_params;

include/linux/pinctrl/pinmux.h

@@ -56,6 +56,9 @@ struct pinctrl_dev;
  *	depending on whether the GPIO is configured as input or output,
  *	a direction selector function may be implemented as a backing
  *	to the GPIO controllers that need pin muxing.
+ * @strict: do not allow simultaneous use of the same pin for GPIO and another
+ *	function. Check both gpio_owner and mux_owner strictly before approving
+ *	the pin request.
  */
 struct pinmux_ops {
 	int (*request) (struct pinctrl_dev *pctldev, unsigned offset);
@@ -79,6 +82,7 @@ struct pinmux_ops {
 				   struct pinctrl_gpio_range *range,
 				   unsigned offset,
 				   bool input);
+	bool strict;
 };
 
 #endif /* CONFIG_PINMUX */