platform/x86/intel_oaktrail.c

1 // SPDX-License-Identifier: GPL-2.0+
5  * Copyright (C) 2010-2011 Intel Corporation
13  * 1. registers itself in the Linux backlight control in
14  *    /sys/class/backlight/intel_oaktrail/
28 #include <linux/backlight.h>
65  * This is the address in EC space and commands used to control LCD backlight:
67  * Two steps needed to change the LCD backlight:
68  *   1. write the backlight percentage into OT_EC_BL_BRIGHTNESS_ADDRESS;
71  * To read the LCD back light, just read out the value from
74  * LCD backlight brightness range: 0 - 100 (OT_EC_BL_BRIGHTNESS_MAX)
124 	rfkill_dev = rfkill_alloc(name, &oaktrail_device->dev, type,  in oaktrail_rfkill_new()
127 		return ERR_PTR(-ENOMEM);  in oaktrail_rfkill_new()
161 	wifi_rfkill = oaktrail_rfkill_new("oaktrail-wifi",  in oaktrail_rfkill_init()
170 	bt_rfkill = oaktrail_rfkill_new("oaktrail-bluetooth",  in oaktrail_rfkill_init()
179 	gps_rfkill = oaktrail_rfkill_new("oaktrail-gps",  in oaktrail_rfkill_init()
188 	wwan_rfkill = oaktrail_rfkill_new("oaktrail-wwan",  in oaktrail_rfkill_init()
205 /* backlight */
216 	u8 percent = (u8) b->props.brightness;  in set_backlight_brightness()
218 		return -EINVAL;  in set_backlight_brightness()
240 				       &oaktrail_device->dev, NULL,  in oaktrail_backlight_init()
246 		pr_warn("Unable to register backlight device\n");  in oaktrail_backlight_init()
252 	bd->props.brightness = get_backlight_brightness(bd);  in oaktrail_backlight_init()
253 	bd->props.power = FB_BLANK_UNBLANK;  in oaktrail_backlight_init()
284 	pr_info("Identified model '%s'\n", id->ident);  in dmi_check_cb()
306 		return -ENODEV;  in oaktrail_init()
310 		pr_err("Platform not recognized (You could try the module's force-parameter)");  in oaktrail_init()
311 		return -ENODEV;  in oaktrail_init()
320 	oaktrail_device = platform_device_alloc(DRIVER_NAME, -1);  in oaktrail_init()
323 		ret = -ENOMEM;  in oaktrail_init()