1 // SPDX-License-Identifier: GPL-2.0-only
7  * Based on leds-da903x:
11  * Copyright (C) 2006-2008 Marvell International Ltd.
40 	struct mc13xxx_led		*led;  member
56 	struct mc13xxx_led *led =  in mc13xxx_led_set()  local
58 	struct mc13xxx_leds *leds = led->leds;  in mc13xxx_led_set()
61 	switch (led->id) {  in mc13xxx_led_set()
66 		shift = 9 + (led->id - MC13783_LED_MD) * 4;  in mc13xxx_led_set()
77 		off = led->id - MC13783_LED_R1;  in mc13xxx_led_set()
78 		bank = off / 3;  in mc13xxx_led_set()
79 		reg = 3 + bank;  in mc13xxx_led_set()
80 		shift = (off - bank * 3) * 5 + 6;  in mc13xxx_led_set()
85 		off = led->id - MC13892_LED_MD;  in mc13xxx_led_set()
87 		shift = 3 + (off - reg * 2) * 12;  in mc13xxx_led_set()
92 		off = led->id - MC13892_LED_R;  in mc13xxx_led_set()
95 		shift = (off - bank * 2) * 12 + 3;  in mc13xxx_led_set()
100 		shift = 3 + (led->id - MC34708_LED_R) * 12;  in mc13xxx_led_set()
106 	return mc13xxx_reg_rmw(leds->master, leds->devtype->ledctrl_base + reg,  in mc13xxx_led_set()
107 			mc13xxx_max_brightness(led->id) << shift,  in mc13xxx_led_set()
118 	struct device *dev = &pdev->dev;  in mc13xxx_led_probe_dt()
119 	int i = 0, ret = -ENODATA;  in mc13xxx_led_probe_dt()
123 		return ERR_PTR(-ENOMEM);  in mc13xxx_led_probe_dt()
126 		of_get_child_by_name(dev_of_node(dev->parent), "leds");  in mc13xxx_led_probe_dt()
128 		return ERR_PTR(-ENODATA);  in mc13xxx_led_probe_dt()
130 	ret = of_property_read_u32_array(parent, "led-control",  in mc13xxx_led_probe_dt()
131 					 pdata->led_control,  in mc13xxx_led_probe_dt()
132 					 leds->devtype->num_regs);  in mc13xxx_led_probe_dt()
136 	pdata->num_leds = of_get_available_child_count(parent);  in mc13xxx_led_probe_dt()
138 	pdata->led = devm_kcalloc(dev, pdata->num_leds, sizeof(*pdata->led),  in mc13xxx_led_probe_dt()
140 	if (!pdata->led)  in mc13xxx_led_probe_dt()
141 		return ERR_PTR(-ENOMEM);  in mc13xxx_led_probe_dt()
149 		pdata->led[i].id = leds->devtype->led_min + tmp;  in mc13xxx_led_probe_dt()
152 			pdata->led[i].name = str;  in mc13xxx_led_probe_dt()
153 		if (!of_property_read_string(child, "linux,default-trigger",  in mc13xxx_led_probe_dt()
155 			pdata->led[i].default_trigger = str;  in mc13xxx_led_probe_dt()
160 	pdata->num_leds = i;  in mc13xxx_led_probe_dt()
162 		return ERR_PTR(-ENODATA);  in mc13xxx_led_probe_dt()
170 	return ERR_PTR(-ENOSYS);  in mc13xxx_led_probe_dt()
176 	struct device *dev = &pdev->dev;  in mc13xxx_led_probe()
178 	struct mc13xxx *mcdev = dev_get_drvdata(dev->parent);  in mc13xxx_led_probe()
180 		(struct mc13xxx_led_devtype *)pdev->id_entry->driver_data;  in mc13xxx_led_probe()
182 	int i, id, ret = -ENODATA;  in mc13xxx_led_probe()
187 		return -ENOMEM;  in mc13xxx_led_probe()
189 	leds->devtype = devtype;  in mc13xxx_led_probe()
190 	leds->master = mcdev;  in mc13xxx_led_probe()
193 	if (dev_of_node(dev->parent)) {  in mc13xxx_led_probe()
198 		return -ENODATA;  in mc13xxx_led_probe()
200 	leds->num_leds = pdata->num_leds;  in mc13xxx_led_probe()
202 	if ((leds->num_leds < 1) ||  in mc13xxx_led_probe()
203 	    (leds->num_leds > (devtype->led_max - devtype->led_min + 1))) {  in mc13xxx_led_probe()
204 		dev_err(dev, "Invalid LED count %d\n", leds->num_leds);  in mc13xxx_led_probe()
205 		return -EINVAL;  in mc13xxx_led_probe()
208 	leds->led = devm_kcalloc(dev, leds->num_leds, sizeof(*leds->led),  in mc13xxx_led_probe()
210 	if (!leds->led)  in mc13xxx_led_probe()
211 		return -ENOMEM;  in mc13xxx_led_probe()
213 	for (i = 0; i < devtype->num_regs; i++) {  in mc13xxx_led_probe()
214 		ret = mc13xxx_reg_write(mcdev, leds->devtype->ledctrl_base + i,  in mc13xxx_led_probe()
215 					pdata->led_control[i]);  in mc13xxx_led_probe()
220 	for (i = 0; i < leds->num_leds; i++) {  in mc13xxx_led_probe()
223 		ret = -EINVAL;  in mc13xxx_led_probe()
225 		id = pdata->led[i].id;  in mc13xxx_led_probe()
226 		name = pdata->led[i].name;  in mc13xxx_led_probe()
227 		trig = pdata->led[i].default_trigger;  in mc13xxx_led_probe()
229 		if ((id > devtype->led_max) || (id < devtype->led_min)) {  in mc13xxx_led_probe()
235 			dev_warn(dev, "LED %i already initialized\n", id);  in mc13xxx_led_probe()
240 		leds->led[i].id = id;  in mc13xxx_led_probe()
241 		leds->led[i].leds = leds;  in mc13xxx_led_probe()
242 		leds->led[i].cdev.name = name;  in mc13xxx_led_probe()
243 		leds->led[i].cdev.default_trigger = trig;  in mc13xxx_led_probe()
244 		leds->led[i].cdev.flags = LED_CORE_SUSPENDRESUME;  in mc13xxx_led_probe()
245 		leds->led[i].cdev.brightness_set_blocking = mc13xxx_led_set;  in mc13xxx_led_probe()
246 		leds->led[i].cdev.max_brightness = mc13xxx_max_brightness(id);  in mc13xxx_led_probe()
248 		ret = led_classdev_register(dev->parent, &leds->led[i].cdev);  in mc13xxx_led_probe()
250 			dev_err(dev, "Failed to register LED %i\n", id);  in mc13xxx_led_probe()
256 		while (--i >= 0)  in mc13xxx_led_probe()
257 			led_classdev_unregister(&leds->led[i].cdev);  in mc13xxx_led_probe()
267 	for (i = 0; i < leds->num_leds; i++)  in mc13xxx_led_remove()
268 		led_classdev_unregister(&leds->led[i].cdev);  in mc13xxx_led_remove()
293 	{ "mc13783-led", (kernel_ulong_t)&mc13783_led_devtype, },
294 	{ "mc13892-led", (kernel_ulong_t)&mc13892_led_devtype, },
295 	{ "mc34708-led", (kernel_ulong_t)&mc34708_led_devtype, },
302 		.name	= "mc13xxx-led",