1 // SPDX-License-Identifier: GPL-2.0-or-later
17 #include <linux/pinctrl/pinconf-generic.h>
19 #include <dt-bindings/pinctrl/k210-fpioa.h>
23 #include "pinctrl-utils.h"
50 #define K210_PC_PU		BIT(16) /* Pull Up */
51 #define K210_PC_PD		BIT(17) /* Pull Down */
52 /* Strong pull up not implemented on K210 */
79  * @pins: 48 32-bits IO pin registers
130  * no pins 48-55).
463 	{ "output-polarity-invert", PIN_CONFIG_OUTPUT_INVERT, 1 },
464 	{ "input-polarity-invert",  PIN_CONFIG_INPUT_INVERT, 1 },
485 	for (i = K210_PC_DRIVE_MAX; i >= 0; i--) {  in k210_pinconf_get_drive()
490 	return -EINVAL;  in k210_pinconf_get_drive()
498 	u32 mode = k210_pinconf_mode_id_to_mode[info->mode_id];  in k210_pinmux_set_pin_function()
501 	dev_dbg(pdata->dev, "set pin %u function %s (%u) -> 0x%08x\n",  in k210_pinmux_set_pin_function()
502 		pin, info->name, func, val);  in k210_pinmux_set_pin_function()
504 	writel(val, &pdata->fpioa->pins[pin]);  in k210_pinmux_set_pin_function()
512 	u32 val = readl(&pdata->fpioa->pins[pin]);  in k210_pinconf_set_param()
515 	dev_dbg(pdata->dev, "set pin %u param %u, arg 0x%x\n",  in k210_pinconf_set_param()
524 			return -EINVAL;  in k210_pinconf_set_param()
529 			return -EINVAL;  in k210_pinconf_set_param()
556 		val = readl(&pdata->fpioa->pins[pin]);  in k210_pinconf_set_param()
586 		return -EINVAL;  in k210_pinconf_set_param()
589 	writel(val, &pdata->fpioa->pins[pin]);  in k210_pinconf_set_param()
601 		return -EINVAL;  in k210_pinconf_set()
619 	seq_printf(s, "%#x", readl(&pdata->fpioa->pins[pin]));  in k210_pinconf_dbg_show()
633 		return -EINVAL;  in k210_pinconf_group_set()
639 			return -EINVAL;  in k210_pinconf_group_set()
642 		bit = BIT(selector - K210_NPINS);  in k210_pinconf_group_set()
643 		regmap_update_bits(pdata->sysctl_map,  in k210_pinconf_group_set()
644 				   pdata->power_offset,  in k210_pinconf_group_set()
662 	ret = regmap_read(pdata->sysctl_map, pdata->power_offset, &val);  in k210_pinconf_group_dbg_show()
664 		dev_err(pdata->dev, "Failed to read power reg\n");  in k210_pinconf_group_dbg_show()
669 		   val & BIT(selector - K210_NPINS) ? "1.8" : "3.3");  in k210_pinconf_group_dbg_show()
709 		return -EINVAL;  in k210_pinmux_set_mux()
755 	seq_printf(s, "%s", dev_name(pctldev->dev));  in k210_pinctrl_pin_dbg_show()
787 		dev_err(pctldev->dev, "%pOF: could not parse node property\n",  in k210_pinctrl_dt_subnode_to_map()
804 			ret = -EINVAL;  in k210_pinctrl_dt_subnode_to_map()
811 		dev_dbg(pctldev->dev, "Pinmux %s: pin %u func %s\n",  in k210_pinctrl_dt_subnode_to_map()
812 			np->name, pin, func_name);  in k210_pinctrl_dt_subnode_to_map()
818 			dev_err(pctldev->dev, "%pOF add mux map failed %d\n",  in k210_pinctrl_dt_subnode_to_map()
829 				dev_err(pctldev->dev,  in k210_pinctrl_dt_subnode_to_map()
886 	.name = "k210-pinctrl",
898 	struct k210_fpioa __iomem *fpioa = pdata->fpioa;  in k210_fpioa_init_ties()
902 	dev_dbg(pdata->dev, "Init pin ties\n");  in k210_fpioa_init_ties()
905 	for (i = 0; i < ARRAY_SIZE(fpioa->tie_en); i++) {  in k210_fpioa_init_ties()
910 				dev_dbg(pdata->dev,  in k210_fpioa_init_ties()
919 		writel(val, &fpioa->tie_val[i]);  in k210_fpioa_init_ties()
920 		writel(val, &fpioa->tie_en[i]);  in k210_fpioa_init_ties()
926 	struct device *dev = &pdev->dev;  in k210_fpioa_probe()
927 	struct device_node *np = dev->of_node;  in k210_fpioa_probe()
935 		return -ENOMEM;  in k210_fpioa_probe()
937 	pdata->dev = dev;  in k210_fpioa_probe()
940 	pdata->fpioa = devm_platform_ioremap_resource(pdev, 0);  in k210_fpioa_probe()
941 	if (IS_ERR(pdata->fpioa))  in k210_fpioa_probe()
942 		return PTR_ERR(pdata->fpioa);  in k210_fpioa_probe()
944 	pdata->clk = devm_clk_get(dev, "ref");  in k210_fpioa_probe()
945 	if (IS_ERR(pdata->clk))  in k210_fpioa_probe()
946 		return PTR_ERR(pdata->clk);  in k210_fpioa_probe()
948 	ret = clk_prepare_enable(pdata->clk);  in k210_fpioa_probe()
952 	pdata->pclk = devm_clk_get_optional(dev, "pclk");  in k210_fpioa_probe()
953 	if (!IS_ERR(pdata->pclk)) {  in k210_fpioa_probe()
954 		ret = clk_prepare_enable(pdata->pclk);  in k210_fpioa_probe()
959 	pdata->sysctl_map =  in k210_fpioa_probe()
961 						"canaan,k210-sysctl-power",  in k210_fpioa_probe()
962 						1, &pdata->power_offset);  in k210_fpioa_probe()
963 	if (IS_ERR(pdata->sysctl_map)) {  in k210_fpioa_probe()
964 		ret = PTR_ERR(pdata->sysctl_map);  in k210_fpioa_probe()
970 	pdata->pctl = pinctrl_register(&k210_pinctrl_desc, dev, (void *)pdata);  in k210_fpioa_probe()
971 	if (IS_ERR(pdata->pctl)) {  in k210_fpioa_probe()
972 		ret = PTR_ERR(pdata->pctl);  in k210_fpioa_probe()
979 	clk_disable_unprepare(pdata->pclk);  in k210_fpioa_probe()
981 	clk_disable_unprepare(pdata->clk);  in k210_fpioa_probe()
987 	{ .compatible = "canaan,k210-fpioa" },
994 		.name		= "k210-fpioa",