1 // SPDX-License-Identifier: GPL-2.0-or-later
7 #include <linux/clk.h>
16 #include <linux/pinctrl/pinconf-generic.h>
21 #include <dt-bindings/pinctrl/k210-fpioa.h>
25 #include "pinctrl-utils.h"
28  * The K210 only implements 8 drive levels, even though
54 /* Strong pull up not implemented on K210 */
80  * struct k210_fpioa: Kendryte K210 FPIOA memory mapped registers
81  * @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()
785 		dev_err(pctldev->dev, "%pOF: could not parse node property\n",  in k210_pinctrl_dt_subnode_to_map()
802 			ret = -EINVAL;  in k210_pinctrl_dt_subnode_to_map()
809 		dev_dbg(pctldev->dev, "Pinmux %s: pin %u func %s\n",  in k210_pinctrl_dt_subnode_to_map()
810 			np->name, pin, func_name);  in k210_pinctrl_dt_subnode_to_map()
816 			dev_err(pctldev->dev, "%pOF add mux map failed %d\n",  in k210_pinctrl_dt_subnode_to_map()
827 				dev_err(pctldev->dev,  in k210_pinctrl_dt_subnode_to_map()
883 	.name = "k210-pinctrl",
895 	struct k210_fpioa __iomem *fpioa = pdata->fpioa;  in k210_fpioa_init_ties()
899 	dev_dbg(pdata->dev, "Init pin ties\n");  in k210_fpioa_init_ties()
902 	for (i = 0; i < ARRAY_SIZE(fpioa->tie_en); i++) {  in k210_fpioa_init_ties()
907 				dev_dbg(pdata->dev,  in k210_fpioa_init_ties()
916 		writel(val, &fpioa->tie_val[i]);  in k210_fpioa_init_ties()
917 		writel(val, &fpioa->tie_en[i]);  in k210_fpioa_init_ties()
923 	struct device *dev = &pdev->dev;  in k210_fpioa_probe()
924 	struct device_node *np = dev->of_node;  in k210_fpioa_probe()
926 	struct clk *clk, *pclk;  in k210_fpioa_probe()  local
928 	dev_info(dev, "K210 FPIOA pin controller\n");  in k210_fpioa_probe()
932 		return -ENOMEM;  in k210_fpioa_probe()
934 	pdata->dev = dev;  in k210_fpioa_probe()
937 	pdata->fpioa = devm_platform_ioremap_resource(pdev, 0);  in k210_fpioa_probe()
938 	if (IS_ERR(pdata->fpioa))  in k210_fpioa_probe()
939 		return PTR_ERR(pdata->fpioa);  in k210_fpioa_probe()
941 	clk = devm_clk_get_enabled(dev, "ref");  in k210_fpioa_probe()
942 	if (IS_ERR(clk))  in k210_fpioa_probe()
943 		return PTR_ERR(clk);  in k210_fpioa_probe()
949 	pdata->sysctl_map =  in k210_fpioa_probe()
951 						"canaan,k210-sysctl-power",  in k210_fpioa_probe()
952 						1, &pdata->power_offset);  in k210_fpioa_probe()
953 	if (IS_ERR(pdata->sysctl_map))  in k210_fpioa_probe()
954 		return PTR_ERR(pdata->sysctl_map);  in k210_fpioa_probe()
958 	pdata->pctl = pinctrl_register(&k210_pinctrl_desc, dev, (void *)pdata);  in k210_fpioa_probe()
959 	if (IS_ERR(pdata->pctl))  in k210_fpioa_probe()
960 		return PTR_ERR(pdata->pctl);  in k210_fpioa_probe()
966 	{ .compatible = "canaan,k210-fpioa" },
973 		.name		= "k210-fpioa",