75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/*
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* i.MX drm driver
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*
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* Copyright (C) 2012 Sascha Hauer, Pengutronix
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*
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* Based on Samsung Exynos code
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/module.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include "imx-drm.h"
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#define MAX_CONNECTOR 4
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#define PREFERRED_BPP 16
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static struct drm_fbdev_cma *fbdev_cma;
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static int legacyfb_depth = 16;
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module_param(legacyfb_depth, int, 0444);
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static int __init imx_fb_helper_init(void)
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{
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struct drm_device *drm = imx_drm_device_get();
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if (!drm)
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return -EINVAL;
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if (legacyfb_depth != 16 && legacyfb_depth != 32) {
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pr_warn("i.MX legacyfb: invalid legacyfb_depth setting. defaulting to 16bpp\n");
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legacyfb_depth = 16;
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}
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fbdev_cma = drm_fbdev_cma_init(drm, legacyfb_depth,
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drm->mode_config.num_crtc, MAX_CONNECTOR);
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if (IS_ERR(fbdev_cma)) {
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imx_drm_device_put();
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return PTR_ERR(fbdev_cma);
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}
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imx_drm_fb_helper_set(fbdev_cma);
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return 0;
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}
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static void __exit imx_fb_helper_exit(void)
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{
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imx_drm_fb_helper_set(NULL);
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drm_fbdev_cma_fini(fbdev_cma);
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imx_drm_device_put();
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}
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late_initcall(imx_fb_helper_init);
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module_exit(imx_fb_helper_exit);
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MODULE_DESCRIPTION("Freescale i.MX legacy fb driver");
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MODULE_AUTHOR("Sascha Hauer, Pengutronix");
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MODULE_LICENSE("GPL");
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