forked from Minki/linux
48666d5631
Keep the fbdev_cma pointer around so we can use it on hotplog and close to ensure the frame buffer console is in a useful state. Signed-off-by: Derek Foreman <derekf@osg.samsung.com> Signed-off-by: Eric Anholt <eric@anholt.net>
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
/*
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* Copyright (C) 2015 Broadcom
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/**
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* DOC: VC4 KMS
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*
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* This is the general code for implementing KMS mode setting that
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* doesn't clearly associate with any of the other objects (plane,
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* crtc, HDMI encoder).
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*/
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#include "drm_crtc.h"
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#include "drm_atomic_helper.h"
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#include "drm_crtc_helper.h"
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#include "drm_plane_helper.h"
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#include "drm_fb_cma_helper.h"
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#include "vc4_drv.h"
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static void vc4_output_poll_changed(struct drm_device *dev)
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{
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struct vc4_dev *vc4 = to_vc4_dev(dev);
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if (vc4->fbdev)
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drm_fbdev_cma_hotplug_event(vc4->fbdev);
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}
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static const struct drm_mode_config_funcs vc4_mode_funcs = {
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.output_poll_changed = vc4_output_poll_changed,
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.atomic_check = drm_atomic_helper_check,
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.atomic_commit = drm_atomic_helper_commit,
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.fb_create = drm_fb_cma_create,
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};
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int vc4_kms_load(struct drm_device *dev)
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{
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struct vc4_dev *vc4 = to_vc4_dev(dev);
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int ret;
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ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
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if (ret < 0) {
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dev_err(dev->dev, "failed to initialize vblank\n");
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return ret;
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}
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dev->mode_config.max_width = 2048;
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dev->mode_config.max_height = 2048;
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dev->mode_config.funcs = &vc4_mode_funcs;
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dev->mode_config.preferred_depth = 24;
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drm_mode_config_reset(dev);
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vc4->fbdev = drm_fbdev_cma_init(dev, 32,
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dev->mode_config.num_crtc,
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dev->mode_config.num_connector);
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if (IS_ERR(vc4->fbdev))
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vc4->fbdev = NULL;
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drm_kms_helper_poll_init(dev);
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return 0;
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}
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