2  * Driver for the Axis ARTPEC-6 pin controller
18 #include <linux/pinctrl/pinconf-generic.h>
24 #include "pinctrl-utils.h"
50 #define ARTPEC6_DRIVE_8mA		8
90 	PINCTRL_PIN(8, "GPIO8"),
186 static const unsigned int i2s0_pins0[] = { 8, 9, 10, 11 };
294 		.num_pins = ARRAY_SIZE(uart0_pins1) - 2,
360 		.num_pins = ARRAY_SIZE(uart5_pins0) - 1,
401 	{ 0, 35, 0x0 },		/* 0x0 - 0x8c */
402 	{ 36, 52, 0x100 },	/* 0x100 - 0x140 */
403 	{ 53, 96, 0x180 },	/* 0x180 - 0x22c */
412 			return (pin - pin_register[i].start) * 4 +  in artpec6_pmx_reg_offset()
457 		return -EINVAL;  in artpec6_pconf_drive_mA_to_field()
684 		regval = readl(pmx->base + reg);  in artpec6_pmx_select_func()
687 		writel(regval, pmx->base + reg);  in artpec6_pmx_select_func()
697 	dev_dbg(pmx->dev, "enabling %s function for pin group %s\n",  in artpec6_pmx_set()
715 		return -EINVAL;  in artpec6_pmx_request_gpio()
717 	val = readl_relaxed(pmx->base + reg);  in artpec6_pmx_request_gpio()
720 	writel_relaxed(val, pmx->base + reg);  in artpec6_pmx_request_gpio()
741 	if (pin >= pmx->num_pins) {  in artpec6_pconf_get()
742 		dev_dbg(pmx->dev, "pinconf is not supported for pin %s\n",  in artpec6_pconf_get()
743 			pmx->pins[pin].name);  in artpec6_pconf_get()
744 		return -ENOTSUPP;  in artpec6_pconf_get()
747 	dev_dbg(pmx->dev, "getting configuration for pin %s\n",  in artpec6_pconf_get()
748 		pmx->pins[pin].name);  in artpec6_pconf_get()
751 	regval = readl(pmx->base + artpec6_pmx_reg_offset(pin));  in artpec6_pconf_get()
757 			return -EINVAL;  in artpec6_pconf_get()
763 			return -EINVAL;  in artpec6_pconf_get()
768 			return -EINVAL;  in artpec6_pconf_get()
777 		return -ENOTSUPP;  in artpec6_pconf_get()
790  * PIN_CONFIG_DRIVE_STRENGTH: x (4mA, 6mA, 8mA, 9mA)
805 	if (pin >= pmx->num_pins) {  in artpec6_pconf_set()
806 		dev_dbg(pmx->dev, "pinconf is not supported for pin %s\n",  in artpec6_pconf_set()
807 			pmx->pins[pin].name);  in artpec6_pconf_set()
808 		return -ENOTSUPP;  in artpec6_pconf_set()
811 	dev_dbg(pmx->dev, "setting configuration for pin %s\n",  in artpec6_pconf_set()
812 		pmx->pins[pin].name);  in artpec6_pconf_set()
814 	reg = pmx->base + artpec6_pmx_reg_offset(pin);  in artpec6_pconf_set()
832 				dev_dbg(pctldev->dev, "%s: arg %u out of range\n",  in artpec6_pconf_set()
834 				return -EINVAL;  in artpec6_pconf_set()
845 				dev_dbg(pctldev->dev, "%s: arg %u out of range\n",  in artpec6_pconf_set()
847 				return -EINVAL;  in artpec6_pconf_set()
859 				dev_dbg(pctldev->dev, "%s: arg %u out of range\n",  in artpec6_pconf_set()
861 				return -EINVAL;  in artpec6_pconf_set()
871 			dev_dbg(pmx->dev, "parameter not supported\n");  in artpec6_pconf_set()
872 			return -ENOTSUPP;  in artpec6_pconf_set()
886 	dev_dbg(pctldev->dev, "setting group %s configuration\n",  in artpec6_pconf_group_set()
911 	.name	 = "artpec6-pinctrl",
920 /* The reset values say 4mA, but we want 8mA as default. */
923 	void __iomem *base = pmx->base;  in artpec6_pmx_reset()
940 	pmx = devm_kzalloc(&pdev->dev, sizeof(*pmx), GFP_KERNEL);  in artpec6_pmx_probe()
942 		return -ENOMEM;  in artpec6_pmx_probe()
944 	pmx->dev = &pdev->dev;  in artpec6_pmx_probe()
946 	pmx->base = devm_platform_ioremap_resource(pdev, 0);  in artpec6_pmx_probe()
948 	if (IS_ERR(pmx->base))  in artpec6_pmx_probe()
949 		return PTR_ERR(pmx->base);  in artpec6_pmx_probe()
953 	pmx->pins	    = artpec6_pins;  in artpec6_pmx_probe()
954 	pmx->num_pins	    = ARRAY_SIZE(artpec6_pins);  in artpec6_pmx_probe()
955 	pmx->functions	    = artpec6_pmx_functions;  in artpec6_pmx_probe()
956 	pmx->num_functions  = ARRAY_SIZE(artpec6_pmx_functions);  in artpec6_pmx_probe()
957 	pmx->pin_groups	    = artpec6_pin_groups;  in artpec6_pmx_probe()
958 	pmx->num_pin_groups = ARRAY_SIZE(artpec6_pin_groups);  in artpec6_pmx_probe()
959 	pmx->pctl	    = pinctrl_register(&artpec6_desc, &pdev->dev, pmx);  in artpec6_pmx_probe()
961 	if (IS_ERR(pmx->pctl)) {  in artpec6_pmx_probe()
962 		dev_err(&pdev->dev, "could not register pinctrl driver\n");  in artpec6_pmx_probe()
963 		return PTR_ERR(pmx->pctl);  in artpec6_pmx_probe()
968 	dev_info(&pdev->dev, "initialised Axis ARTPEC-6 pinctrl driver\n");  in artpec6_pmx_probe()
977 	pinctrl_unregister(pmx->pctl);  in artpec6_pmx_remove()
981 	{ .compatible = "axis,artpec6-pinctrl" },
987 		.name = "artpec6-pinctrl",