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/*
* Copyright (C) 2012-2015 Red Hat Inc.
*
* Based in parts on the udl code. Based in parts on the gm12u320 fb driver:
* Copyright (C) 2013 Viacheslav Nurmekhamitov <slavrn@yandex.ru>
* Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
* Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
* Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License v2. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include "gm12u320_drv.h"
static void gm12u320_crtc_dpms(struct drm_crtc *crtc, int mode)
{
}
static bool gm12u320_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
static int gm12u320_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
int x, int y,
struct drm_framebuffer *old_fb)
{
struct gm12u320_framebuffer *fb = to_gm12u320_fb(crtc->primary->fb);
gm12u320_fb_mark_dirty(fb, 0, GM12U320_USER_WIDTH, 0, GM12U320_HEIGHT);
return 0;
}
static void gm12u320_crtc_disable(struct drm_crtc *crtc)
{
}
static void gm12u320_crtc_destroy(struct drm_crtc *crtc)
{
drm_crtc_cleanup(crtc);
kfree(crtc);
}
static int gm12u320_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *drm_fb,
struct drm_pending_vblank_event *event,
uint32_t page_flip_flags)
{
struct gm12u320_framebuffer *fb = to_gm12u320_fb(drm_fb);
struct drm_device *dev = crtc->dev;
unsigned long flags;
gm12u320_fb_mark_dirty(fb, 0, GM12U320_USER_WIDTH, 0, GM12U320_HEIGHT);
spin_lock_irqsave(&dev->event_lock, flags);
if (event)
drm_send_vblank_event(dev, 0, event);
spin_unlock_irqrestore(&dev->event_lock, flags);
crtc->primary->fb = drm_fb;
return 0;
}
static void gm12u320_crtc_prepare(struct drm_crtc *crtc)
{
}
static void gm12u320_crtc_commit(struct drm_crtc *crtc)
{
gm12u320_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
}
static struct drm_crtc_helper_funcs gm12u320_helper_funcs = {
.dpms = gm12u320_crtc_dpms,
.mode_fixup = gm12u320_crtc_mode_fixup,
.mode_set = gm12u320_crtc_mode_set,
.prepare = gm12u320_crtc_prepare,
.commit = gm12u320_crtc_commit,
.disable = gm12u320_crtc_disable,
};
static const struct drm_crtc_funcs gm12u320_crtc_funcs = {
.set_config = drm_crtc_helper_set_config,
.destroy = gm12u320_crtc_destroy,
.page_flip = gm12u320_crtc_page_flip,
};
static int gm12u320_crtc_init(struct drm_device *dev)
{
struct drm_crtc *crtc;
crtc = kzalloc(sizeof(struct drm_crtc) + sizeof(struct drm_connector *), GFP_KERNEL);
if (crtc == NULL)
return -ENOMEM;
drm_crtc_init(dev, crtc, &gm12u320_crtc_funcs);
drm_crtc_helper_add(crtc, &gm12u320_helper_funcs);
return 0;
}
static const struct drm_mode_config_funcs gm12u320_mode_funcs = {
.fb_create = gm12u320_fb_user_fb_create,
.output_poll_changed = NULL,
};
int gm12u320_modeset_init(struct drm_device *dev)
{
struct drm_encoder *encoder;
drm_mode_config_init(dev);
dev->mode_config.min_width = GM12U320_USER_WIDTH;
dev->mode_config.min_height = GM12U320_HEIGHT;
dev->mode_config.max_width = 2048;
dev->mode_config.max_height = 2048;
dev->mode_config.prefer_shadow = 0;
dev->mode_config.preferred_depth = 24;
dev->mode_config.funcs = &gm12u320_mode_funcs;
drm_mode_create_dirty_info_property(dev);
gm12u320_crtc_init(dev);
encoder = gm12u320_encoder_init(dev);
gm12u320_connector_init(dev, encoder);
return 0;
}
void gm12u320_modeset_cleanup(struct drm_device *dev)
{
drm_mode_config_cleanup(dev);
}
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