1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (C) 2013-2017 Broadcom
13 #include <linux/pinctrl/pinconf-generic.h>
19 #include "../pinctrl-utils.h"
56  * bcm281xx_pin_type - types of pin register
70  * bcm281xx_pin_function- define pin function
79  * bcm281xx_pinctrl_data - Broadcom-specific pinctrl data
80  * @reg_base - base of pinctrl registers
921 /* Every pin can implement all ALT1-ALT4 functions */
948 	if (pin >= pdata->npins)  in pin_type_get()
951 	return *(enum bcm281xx_pin_type *)(pdata->pins[pin].drv_data);  in pin_type_get()
984 	return pdata->npins;  in bcm281xx_pinctrl_get_groups_count()
992 	return pdata->pins[group].name;  in bcm281xx_pinctrl_get_group_name()
1002 	*pins = &pdata->pins[group].number;  in bcm281xx_pinctrl_get_group_pins()
1012 	seq_printf(s, " %s", dev_name(pctldev->dev));  in bcm281xx_pinctrl_pin_dbg_show()
1028 	return pdata->nfunctions;  in bcm281xx_pinctrl_get_fcns_count()
1036 	return pdata->functions[function].name;  in bcm281xx_pinctrl_get_fcn_name()
1046 	*groups = pdata->functions[function].groups;  in bcm281xx_pinctrl_get_fcn_groups()
1047 	*num_groups = pdata->functions[function].ngroups;  in bcm281xx_pinctrl_get_fcn_groups()
1057 	const struct bcm281xx_pin_function *f = &pdata->functions[function];  in bcm281xx_pinmux_set()
1058 	u32 offset = 4 * pdata->pins[group].number;  in bcm281xx_pinmux_set()
1061 	dev_dbg(pctldev->dev,  in bcm281xx_pinmux_set()
1063 		__func__, f->name, function, pdata->pins[group].name,  in bcm281xx_pinmux_set()
1064 		pdata->pins[group].number, offset);  in bcm281xx_pinmux_set()
1066 	rc = regmap_update_bits(pdata->regmap, offset,  in bcm281xx_pinmux_set()
1070 		dev_err(pctldev->dev,  in bcm281xx_pinmux_set()
1072 			pdata->pins[group].name, pdata->pins[group].number);  in bcm281xx_pinmux_set()
1088 	return -ENOTSUPP;  in bcm281xx_pinctrl_pin_config_get()
1117 		 * The pin bias can only be one of pull-up, pull-down, or  in bcm281xx_std_pin_update()
1119 		 * property, and the default value from pinconf-generic is  in bcm281xx_std_pin_update()
1165 			/* Valid range is 2-16 mA, even numbers only */  in bcm281xx_std_pin_update()
1167 				dev_err(pctldev->dev,  in bcm281xx_std_pin_update()
1168 					"Invalid Drive Strength value (%d) for "  in bcm281xx_std_pin_update()
1171 					arg, pdata->pins[pin].name, pin);  in bcm281xx_std_pin_update()
1172 				return -EINVAL;  in bcm281xx_std_pin_update()
1174 			bcm281xx_pin_update(val, mask, (arg/2)-1,  in bcm281xx_std_pin_update()
1180 			dev_err(pctldev->dev,  in bcm281xx_std_pin_update()
1182 				param, pdata->pins[pin].name, pin);  in bcm281xx_std_pin_update()
1183 			return -EINVAL;  in bcm281xx_std_pin_update()
1192  * The pull-up strength for an I2C pin is represented by bits 4-6 in the
1194  *   0b000: No pull-up
1195  *   0b001: 1200 Ohm
1196  *   0b010: 1800 Ohm
1197  *   0b011: 720 Ohm
1198  *   0b100: 2700 Ohm
1199  *   0b101: 831 Ohm
1200  *   0b110: 1080 Ohm
1201  *   0b111: 568 Ohm
1202  * This array maps pull-up strength in Ohms to register values (1+index).
1232 				dev_err(pctldev->dev,  in bcm281xx_i2c_pin_update()
1233 					"Invalid pull-up value (%d) for pin %s "  in bcm281xx_i2c_pin_update()
1236 					arg, pdata->pins[pin].name, pin);  in bcm281xx_i2c_pin_update()
1237 				return -EINVAL;  in bcm281xx_i2c_pin_update()
1267 			dev_err(pctldev->dev,  in bcm281xx_i2c_pin_update()
1269 				param, pdata->pins[pin].name, pin);  in bcm281xx_i2c_pin_update()
1270 			return -EINVAL;  in bcm281xx_i2c_pin_update()
1312 			dev_err(pctldev->dev,  in bcm281xx_hdmi_pin_update()
1314 				param, pdata->pins[pin].name, pin);  in bcm281xx_hdmi_pin_update()
1315 			return -EINVAL;  in bcm281xx_hdmi_pin_update()
1356 		dev_err(pctldev->dev, "Unknown pin type for pin %s (%d).\n",  in bcm281xx_pinctrl_pin_config_set()
1357 			pdata->pins[pin].name, pin);  in bcm281xx_pinctrl_pin_config_set()
1358 		return -EINVAL;  in bcm281xx_pinctrl_pin_config_set()
1365 	dev_dbg(pctldev->dev,  in bcm281xx_pinctrl_pin_config_set()
1367 		__func__, pdata->pins[pin].name, pin, cfg_val, cfg_mask);  in bcm281xx_pinctrl_pin_config_set()
1369 	rc = regmap_update_bits(pdata->regmap, offset, cfg_mask, cfg_val);  in bcm281xx_pinctrl_pin_config_set()
1371 		dev_err(pctldev->dev,  in bcm281xx_pinctrl_pin_config_set()
1373 			pdata->pins[pin].name, pin);  in bcm281xx_pinctrl_pin_config_set()
1399 	pdata->reg_base = devm_platform_ioremap_resource(pdev, 0);  in bcm281xx_pinctrl_probe()
1400 	if (IS_ERR(pdata->reg_base)) {  in bcm281xx_pinctrl_probe()
1401 		dev_err(&pdev->dev, "Failed to ioremap MEM resource\n");  in bcm281xx_pinctrl_probe()
1402 		return PTR_ERR(pdata->reg_base);  in bcm281xx_pinctrl_probe()
1406 	pdata->regmap = devm_regmap_init_mmio(&pdev->dev, pdata->reg_base,  in bcm281xx_pinctrl_probe()
1408 	if (IS_ERR(pdata->regmap)) {  in bcm281xx_pinctrl_probe()
1409 		dev_err(&pdev->dev, "Regmap MMIO init failed.\n");  in bcm281xx_pinctrl_probe()
1410 		return -ENODEV;  in bcm281xx_pinctrl_probe()
1413 	bcm281xx_pinctrl_desc.name = dev_name(&pdev->dev);  in bcm281xx_pinctrl_probe()
1417 	pctl = devm_pinctrl_register(&pdev->dev, &bcm281xx_pinctrl_desc, pdata);  in bcm281xx_pinctrl_probe()
1419 		dev_err(&pdev->dev, "Failed to register pinctrl\n");  in bcm281xx_pinctrl_probe()
1429 	{ .compatible = "brcm,bcm11351-pinctrl", },
1434 	.driver = {
1435 		.name = "bcm281xx-pinctrl",