linux/drivers/gpu/drm/sun4i/sun4i_framebuffer.c
Noralf Trønnes 94ebfc0782 drm/sun4i: Use drm_fbdev_generic_setup()
The CMA helper is already using the drm_fb_helper_generic_probe part of
the generic fbdev emulation. This patch makes full use of the generic
fbdev emulation by using its drm_client callbacks. This means that
drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are
now handled by the emulation code. Additionally fbdev unregister happens
automatically on drm_dev_unregister().

The drm_fbdev_generic_setup() call is put after drm_dev_register() in the
driver. This is done to highlight the fact that fbdev emulation is an
internal client that makes use of the driver, it is not part of the
driver as such. If fbdev setup fails, an error is printed, but the driver
succeeds probing.

Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181025201340.34227-8-noralf@tronnes.org
2018-11-01 15:25:11 +01:00

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C

/*
* Copyright (C) 2015 Free Electrons
* Copyright (C) 2015 NextThing Co
*
* Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*/
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drmP.h>
#include "sun4i_drv.h"
#include "sun4i_framebuffer.h"
static int sun4i_de_atomic_check(struct drm_device *dev,
struct drm_atomic_state *state)
{
int ret;
ret = drm_atomic_helper_check_modeset(dev, state);
if (ret)
return ret;
ret = drm_atomic_normalize_zpos(dev, state);
if (ret)
return ret;
return drm_atomic_helper_check_planes(dev, state);
}
static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
.atomic_check = sun4i_de_atomic_check,
.atomic_commit = drm_atomic_helper_commit,
.fb_create = drm_gem_fb_create,
};
static struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = {
.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
};
void sun4i_framebuffer_init(struct drm_device *drm)
{
drm_mode_config_reset(drm);
drm->mode_config.max_width = 8192;
drm->mode_config.max_height = 8192;
drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
drm->mode_config.helper_private = &sun4i_de_mode_config_helpers;
}