linux/drivers/gpu/drm/nouveau/nouveau_backlight.c

/*
 * Copyright (C) 2009 Red Hat <[email protected]>
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

/*
 * Authors:
 *  Matthew Garrett <[email protected]>
 *
 * Register locations derived from NVClock by Roderick Colenbrander
 */

#include <linux/apple-gmux.h>
#include <linux/backlight.h>
#include <linux/idr.h>
#include <drm/drm_probe_helper.h>

#include "nouveau_drv.h"
#include "nouveau_reg.h"
#include "nouveau_encoder.h"
#include "nouveau_connector.h"
#include "nouveau_acpi.h"

static struct ida bl_ida;
#define BL_NAME_SIZE …

static bool
nouveau_get_backlight_name(char backlight_name[BL_NAME_SIZE],
			   struct nouveau_backlight *bl)
{ … }

static int
nv40_get_intensity(struct backlight_device *bd)
{ … }

static int
nv40_set_intensity(struct backlight_device *bd)
{ … }

static const struct backlight_ops nv40_bl_ops = …;

static int
nv40_backlight_init(struct nouveau_encoder *encoder,
		    struct backlight_properties *props,
		    const struct backlight_ops **ops)
{ … }

/*
 * eDP brightness callbacks need to happen under lock, since we need to
 * enable/disable the backlight ourselves for modesets
 */
static int
nv50_edp_get_brightness(struct backlight_device *bd)
{ … }

static int
nv50_edp_set_brightness(struct backlight_device *bd)
{ … }

static const struct backlight_ops nv50_edp_bl_ops = …;

static int
nv50_get_intensity(struct backlight_device *bd)
{ … }

static int
nv50_set_intensity(struct backlight_device *bd)
{ … }

static const struct backlight_ops nv50_bl_ops = …;

/* FIXME: perform backlight probing for eDP _before_ this, this only gets called after connector
 * registration which happens after the initial modeset
 */
static int
nv50_backlight_init(struct nouveau_backlight *bl,
		    struct nouveau_connector *nv_conn,
		    struct nouveau_encoder *nv_encoder,
		    struct backlight_properties *props,
		    const struct backlight_ops **ops)
{ … }

int
nouveau_backlight_init(struct drm_connector *connector)
{ … }

void
nouveau_backlight_fini(struct drm_connector *connector)
{ … }

void
nouveau_backlight_ctor(void)
{ … }

void
nouveau_backlight_dtor(void)
{ … }