37 nouveau_led_get_brightness(struct led_classdev *led)  in nouveau_led_get_brightness()  argument
39 	struct drm_device *drm_dev = container_of(led, struct nouveau_led, led)->dev;  in nouveau_led_get_brightness()
41 	struct nvif_object *device = &drm->client.device.object;  in nouveau_led_get_brightness()
44 	div =  nvif_rd32(device, 0x61c880) & 0x00ffffff;  in nouveau_led_get_brightness()
45 	duty = nvif_rd32(device, 0x61c884) & 0x00ffffff;  in nouveau_led_get_brightness()
47 	if (div > 0)  in nouveau_led_get_brightness()
50 		return 0;  in nouveau_led_get_brightness()
54 nouveau_led_set_brightness(struct led_classdev *led, enum led_brightness value)  in nouveau_led_set_brightness()  argument
56 	struct drm_device *drm_dev = container_of(led, struct nouveau_led, led)->dev;  in nouveau_led_set_brightness()
58 	struct nvif_object *device = &drm->client.device.object;  in nouveau_led_set_brightness()
61 	u32 freq = 100; /* this is what nvidia uses and it should be good-enough */  in nouveau_led_set_brightness()
68 	 *  - A: nvidia never puts the logo led to any other PWM controler  in nouveau_led_set_brightness()
70 	 *  - B: nouveau does not touch these registers anywhere else  in nouveau_led_set_brightness()
72 	nvif_wr32(device, 0x61c880, div);  in nouveau_led_set_brightness()
73 	nvif_wr32(device, 0x61c884, 0xc0000000 | duty);  in nouveau_led_set_brightness()
81 	struct nvkm_gpio *gpio = nvxx_gpio(&drm->client.device);  in nouveau_led_init()
86 		return 0;  in nouveau_led_init()
88 	/* check that there is a GPIO controlling the logo LED */  in nouveau_led_init()
89 	if (nvkm_gpio_find(gpio, 0, DCB_GPIO_LOGO_LED_PWM, 0xff, &logo_led))  in nouveau_led_init()
90 		return 0;  in nouveau_led_init()
92 	drm->led = kzalloc(sizeof(*drm->led), GFP_KERNEL);  in nouveau_led_init()
93 	if (!drm->led)  in nouveau_led_init()
94 		return -ENOMEM;  in nouveau_led_init()
95 	drm->led->dev = dev;  in nouveau_led_init()
97 	drm->led->led.name = "nvidia-logo";  in nouveau_led_init()
98 	drm->led->led.max_brightness = 255;  in nouveau_led_init()
99 	drm->led->led.brightness_get = nouveau_led_get_brightness;  in nouveau_led_init()
100 	drm->led->led.brightness_set = nouveau_led_set_brightness;  in nouveau_led_init()
102 	ret = led_classdev_register(dev->dev, &drm->led->led);  in nouveau_led_init()
104 		kfree(drm->led);  in nouveau_led_init()
105 		drm->led = NULL;  in nouveau_led_init()
109 	return 0;  in nouveau_led_init()
117 	if (drm->led)  in nouveau_led_suspend()
118 		led_classdev_suspend(&drm->led->led);  in nouveau_led_suspend()
126 	if (drm->led)  in nouveau_led_resume()
127 		led_classdev_resume(&drm->led->led);  in nouveau_led_resume()
135 	if (drm->led) {  in nouveau_led_fini()
136 		led_classdev_unregister(&drm->led->led);  in nouveau_led_fini()
137 		kfree(drm->led);  in nouveau_led_fini()
138 		drm->led = NULL;  in nouveau_led_fini()