1 // SPDX-License-Identifier: GPL-2.0-only
3  *  linux/drivers/pinctrl/pinmux-falcon.c
4  *  based on linux/drivers/pinctrl/pinmux-pxa910.c
22 #include "pinctrl-lantiq.h"
47 #define PINS			32  macro
48 #define PORT(x)                 (x / PINS)
49 #define PORT_PIN(x)             (x % PINS)
67 	.pins = p,		\
90 static struct pinctrl_pin_desc falcon_pads[PORTS * PINS];
95 	int base = bank * PINS;  in lantiq_load_pin_desc()
107 	MFP_FALCON(GPIO0,	RST,	GPIO,   NONE,   NONE),
113 	MFP_FALCON(GPIO6,	RST,	GPIO,   NONE,   NONE),
182 	GRP_MUX("por", RST, pins_por),
186 	GRP_MUX("hrst", RST, pins_hrst),
212 	{"rst",		ARRAY_AND_SIZE(ltq_rst_grps)},
227 /* ---------  pinconf related code --------- */
231 	return -ENOTSUPP;  in falcon_pinconf_group_get()
238 	return -ENOTSUPP;  in falcon_pinconf_group_set()
246 	void __iomem *mem = info->membase[PORT(pin)];  in falcon_pinconf_get()
270 		return -ENOTSUPP;  in falcon_pinconf_get()
283 	void __iomem *mem = info->membase[PORT(pin)];  in falcon_pinconf_set()
310 			return -ENOTSUPP;  in falcon_pinconf_set()
315 			return -ENOTSUPP;  in falcon_pinconf_set()
330 	seq_printf(s, " (port %d) mux %d -- ", port,  in falcon_pinconf_dbg_show()
331 		pad_r32(info->membase[port], LTQ_PADC_MUX(PORT_PIN(offset))));  in falcon_pinconf_dbg_show()
340 		seq_printf(s, "drive-current %d ",  in falcon_pinconf_dbg_show()
345 		seq_printf(s, "slew-rate %d ",  in falcon_pinconf_dbg_show()
350 		if (desc->gpio_owner)  in falcon_pinconf_dbg_show()
351 			seq_printf(s, " owner: %s", desc->gpio_owner);  in falcon_pinconf_dbg_show()
373 	.pins		= falcon_pads,
381 	int port = PORT(info->mfp[mfp].pin);  in falcon_mux_apply()
383 	if ((port >= PORTS) || (!info->membase[port]))  in falcon_mux_apply()
384 		return -ENODEV;  in falcon_mux_apply()
386 	pad_w32(info->membase[port], mux,  in falcon_mux_apply()
387 		LTQ_PADC_MUX(PORT_PIN(info->mfp[mfp].pin)));  in falcon_mux_apply()
393 	{"lantiq,drive-current",	LTQ_PINCONF_PARAM_DRIVE_CURRENT},
394 	{"lantiq,slew-rate",		LTQ_PINCONF_PARAM_SLEW_RATE},
407 /* --------- register the pinctrl layer --------- */
414 		return -EINVAL;  in pinctrl_falcon_get_range_size()
433 	for_each_compatible_node(np, NULL, "lantiq,pad-falcon") {  in pinctrl_falcon_probe()
438 		int pins;  in pinctrl_falcon_probe()  local
450 			dev_err(&pdev->dev, "failed to find pad pdev\n");  in pinctrl_falcon_probe()
454 		falcon_info.clk[*bank] = clk_get(&ppdev->dev, NULL);  in pinctrl_falcon_probe()
455 		put_device(&ppdev->dev);  in pinctrl_falcon_probe()
457 			dev_err(&ppdev->dev, "failed to get clock\n");  in pinctrl_falcon_probe()
461 		falcon_info.membase[*bank] = devm_ioremap_resource(&pdev->dev,  in pinctrl_falcon_probe()
470 		pins = fls(avail);  in pinctrl_falcon_probe()
471 		lantiq_load_pin_desc(&falcon_pads[pad_count], *bank, pins);  in pinctrl_falcon_probe()
472 		pad_count += pins;  in pinctrl_falcon_probe()
474 		dev_dbg(&pdev->dev, "found %s with %d pads\n",  in pinctrl_falcon_probe()
475 				res.name, pins);  in pinctrl_falcon_probe()
477 	dev_dbg(&pdev->dev, "found a total of %d pads\n", pad_count);  in pinctrl_falcon_probe()
478 	falcon_pctrl_desc.name	= dev_name(&pdev->dev);  in pinctrl_falcon_probe()
490 		dev_info(&pdev->dev, "Init done\n");  in pinctrl_falcon_probe()
495 	{ .compatible = "lantiq,pinctrl-falcon" },
503 		.name = "pinctrl-falcon",