2  * drivers/leds/leds-mlxcpld.c
39 #include <linux/hwmon-sysfs.h>
50 #define MLXCPLD_LED_OFFSET_HALF		0x01 /* Offset from solid: 3Hz blink */
51 #define MLXCPLD_LED_OFFSET_FULL		0x02 /* Offset from solid: 6Hz blink */
67  * struct mlxcpld_param - LED access parameters:
79  * struct mlxcpld_led_priv - LED private data:
91  * struct mlxcpld_led_profile - system LED profile (defined per system class):
107  * struct mlxcpld_led_pdata - system LED private data
266 	 * 0x6 for 3Hz blink red, 0xd for solid green, 0xe for 3Hz blink  in mlxcpld_led_store_hw()
269 	 * 0xf0 - lower nibble is to be used (bits from 0 to 3), mask 0x0f -  in mlxcpld_led_store_hw()
272 	spin_lock(&mlxcpld_led->lock);  in mlxcpld_led_store_hw()
279 	spin_unlock(&mlxcpld_led->lock);  in mlxcpld_led_store_hw()
288 		mlxcpld_led_store_hw(pled->param.mask, pled->param.offset,  in mlxcpld_led_brightness_set()
289 				     pled->param.base_color);  in mlxcpld_led_brightness_set()
293 	mlxcpld_led_store_hw(pled->param.mask, pled->param.offset,  in mlxcpld_led_brightness_set()
304 	 * HW supports two types of blinking: full (6Hz) and half (3Hz).  in mlxcpld_led_blink_set()
312 		return -EINVAL;  in mlxcpld_led_blink_set()
315 		mlxcpld_led_store_hw(pled->param.mask, pled->param.offset,  in mlxcpld_led_blink_set()
316 				     pled->param.base_color +  in mlxcpld_led_blink_set()
319 		mlxcpld_led_store_hw(pled->param.mask, pled->param.offset,  in mlxcpld_led_blink_set()
320 				     pled->param.base_color +  in mlxcpld_led_blink_set()
332 	cpld->pled = devm_kcalloc(dev,  in mlxcpld_led_config()
333 				  cpld->num_led_instances,  in mlxcpld_led_config()
336 	if (!cpld->pled)  in mlxcpld_led_config()
337 		return -ENOMEM;  in mlxcpld_led_config()
339 	for (i = 0; i < cpld->num_led_instances; i++) {  in mlxcpld_led_config()
340 		cpld->pled[i].cdev.name = cpld->profile[i].name;  in mlxcpld_led_config()
341 		cpld->pled[i].cdev.brightness = cpld->profile[i].brightness;  in mlxcpld_led_config()
342 		cpld->pled[i].cdev.max_brightness = 1;  in mlxcpld_led_config()
343 		cpld->pled[i].cdev.brightness_set = mlxcpld_led_brightness_set;  in mlxcpld_led_config()
344 		cpld->pled[i].cdev.blink_set = mlxcpld_led_blink_set;  in mlxcpld_led_config()
345 		cpld->pled[i].cdev.flags = LED_CORE_SUSPENDRESUME;  in mlxcpld_led_config()
346 		err = devm_led_classdev_register(dev, &cpld->pled[i].cdev);  in mlxcpld_led_config()
350 		cpld->pled[i].param.offset = mlxcpld_led->profile[i].offset;  in mlxcpld_led_config()
351 		cpld->pled[i].param.mask = mlxcpld_led->profile[i].mask;  in mlxcpld_led_config()
352 		cpld->pled[i].param.base_color =  in mlxcpld_led_config()
353 					mlxcpld_led->profile[i].base_color;  in mlxcpld_led_config()
355 		if (mlxcpld_led->profile[i].brightness)  in mlxcpld_led_config()
356 			mlxcpld_led_brightness_set(&cpld->pled[i].cdev,  in mlxcpld_led_config()
357 					mlxcpld_led->profile[i].brightness);  in mlxcpld_led_config()
368 	mlxcpld_led = devm_kzalloc(&pdev->dev, sizeof(*mlxcpld_led),  in mlxcpld_led_probe()
371 		return -ENOMEM;  in mlxcpld_led_probe()
373 	mlxcpld_led->pdev = pdev;  in mlxcpld_led_probe()
377 		mlxcpld_led->profile = mlxcpld_led_msn2100_profile;  in mlxcpld_led_probe()
378 		mlxcpld_led->num_led_instances =  in mlxcpld_led_probe()
383 		mlxcpld_led->profile = mlxcpld_led_default_profile;  in mlxcpld_led_probe()
384 		mlxcpld_led->num_led_instances =  in mlxcpld_led_probe()
389 	spin_lock_init(&mlxcpld_led->lock);  in mlxcpld_led_probe()
391 	return mlxcpld_led_config(&pdev->dev, mlxcpld_led);  in mlxcpld_led_probe()
406 		return -ENODEV;  in mlxcpld_led_init()
408 	pdev = platform_device_register_simple(KBUILD_MODNAME, -1, NULL, 0);  in mlxcpld_led_init()
425 	platform_device_unregister(mlxcpld_led->pdev);  in mlxcpld_led_exit()