--- zzzz-none-000/linux-3.10.107/drivers/pinctrl/pinctrl-u300.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/pinctrl/pinctrl-u300.c	2021-02-04 17:41:59.000000000 +0000
@@ -955,8 +955,8 @@
 	}
 }
 
-static int u300_pmx_enable(struct pinctrl_dev *pctldev, unsigned selector,
-			   unsigned group)
+static int u300_pmx_set_mux(struct pinctrl_dev *pctldev, unsigned selector,
+			    unsigned group)
 {
 	struct u300_pmx *upmx;
 
@@ -970,19 +970,6 @@
 	return 0;
 }
 
-static void u300_pmx_disable(struct pinctrl_dev *pctldev, unsigned selector,
-			     unsigned group)
-{
-	struct u300_pmx *upmx;
-
-	/* There is nothing to do with the power pins */
-	if (selector == 0)
-		return;
-
-	upmx = pinctrl_dev_get_drvdata(pctldev);
-	u300_pmx_endisable(upmx, selector, false);
-}
-
 static int u300_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
 {
 	return ARRAY_SIZE(u300_pmx_functions);
@@ -1007,8 +994,7 @@
 	.get_functions_count = u300_pmx_get_funcs_count,
 	.get_function_name = u300_pmx_get_func_name,
 	.get_function_groups = u300_pmx_get_groups,
-	.enable = u300_pmx_enable,
-	.disable = u300_pmx_disable,
+	.set_mux = u300_pmx_set_mux,
 };
 
 static int u300_pin_config_get(struct pinctrl_dev *pctldev, unsigned pin,
@@ -1027,21 +1013,23 @@
 }
 
 static int u300_pin_config_set(struct pinctrl_dev *pctldev, unsigned pin,
-			       unsigned long config)
+			       unsigned long *configs, unsigned num_configs)
 {
 	struct pinctrl_gpio_range *range =
 		pinctrl_find_gpio_range_from_pin(pctldev, pin);
-	int ret;
+	int ret, i;
 
 	if (!range)
 		return -EINVAL;
 
-	/* Note: none of these configurations take any argument */
-	ret = u300_gpio_config_set(range->gc,
-				   (pin - range->pin_base + range->base),
-				   pinconf_to_config_param(config));
-	if (ret)
-		return ret;
+	for (i = 0; i < num_configs; i++) {
+		/* Note: none of these configurations take any argument */
+		ret = u300_gpio_config_set(range->gc,
+			(pin - range->pin_base + range->base),
+			pinconf_to_config_param(configs[i]));
+		if (ret)
+			return ret;
+	} /* for each config */
 
 	return 0;
 }
@@ -1075,17 +1063,14 @@
 	upmx->dev = &pdev->dev;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENOENT;
-
 	upmx->virtbase = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(upmx->virtbase))
 		return PTR_ERR(upmx->virtbase);
 
 	upmx->pctl = pinctrl_register(&u300_pmx_desc, &pdev->dev, upmx);
-	if (!upmx->pctl) {
+	if (IS_ERR(upmx->pctl)) {
 		dev_err(&pdev->dev, "could not register U300 pinmux driver\n");
-		return -EINVAL;
+		return PTR_ERR(upmx->pctl);
 	}
 
 	platform_set_drvdata(pdev, upmx);
@@ -1100,15 +1085,20 @@
 	struct u300_pmx *upmx = platform_get_drvdata(pdev);
 
 	pinctrl_unregister(upmx->pctl);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }
 
+static const struct of_device_id u300_pinctrl_match[] = {
+	{ .compatible = "stericsson,pinctrl-u300" },
+	{},
+};
+
+
 static struct platform_driver u300_pmx_driver = {
 	.driver = {
 		.name = DRIVER_NAME,
-		.owner = THIS_MODULE,
+		.of_match_table = u300_pinctrl_match,
 	},
 	.probe = u300_pmx_probe,
 	.remove = u300_pmx_remove,