2011-10-04 10:19:01 +00:00
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/* exynos_drm_fbdev.c
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* Authors:
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* Inki Dae <inki.dae@samsung.com>
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* Joonyoung Shim <jy0922.shim@samsung.com>
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* Seung-Woo Kim <sw0312.kim@samsung.com>
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*
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2012-12-17 17:30:17 +00:00
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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2011-10-04 10:19:01 +00:00
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*/
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2012-10-02 17:01:07 +00:00
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_crtc_helper.h>
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2013-08-06 11:52:04 +00:00
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#include <drm/exynos_drm.h>
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2011-10-04 10:19:01 +00:00
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2017-09-14 12:01:01 +00:00
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#include <linux/console.h>
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2011-10-04 10:19:01 +00:00
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#include "exynos_drm_drv.h"
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#include "exynos_drm_fb.h"
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2013-08-12 23:46:40 +00:00
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#include "exynos_drm_fbdev.h"
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2012-12-21 08:59:20 +00:00
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#include "exynos_drm_iommu.h"
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2011-10-04 10:19:01 +00:00
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#define MAX_CONNECTOR 4
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#define PREFERRED_BPP 32
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#define to_exynos_fbdev(x) container_of(x, struct exynos_drm_fbdev,\
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drm_fb_helper)
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struct exynos_drm_fbdev {
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2015-10-02 00:33:47 +00:00
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struct drm_fb_helper drm_fb_helper;
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struct exynos_drm_gem *exynos_gem;
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2011-10-04 10:19:01 +00:00
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};
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2012-11-19 08:25:28 +00:00
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static int exynos_drm_fb_mmap(struct fb_info *info,
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struct vm_area_struct *vma)
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{
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struct drm_fb_helper *helper = info->par;
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struct exynos_drm_fbdev *exynos_fbd = to_exynos_fbdev(helper);
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2015-10-02 00:33:47 +00:00
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struct exynos_drm_gem *exynos_gem = exynos_fbd->exynos_gem;
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2012-11-19 08:25:28 +00:00
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unsigned long vm_size;
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int ret;
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vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
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vm_size = vma->vm_end - vma->vm_start;
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2015-10-02 00:33:47 +00:00
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if (vm_size > exynos_gem->size)
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2012-11-19 08:25:28 +00:00
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return -EINVAL;
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2016-02-29 08:50:53 +00:00
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ret = dma_mmap_attrs(to_dma_dev(helper->dev), vma, exynos_gem->cookie,
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2015-10-02 00:33:47 +00:00
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exynos_gem->dma_addr, exynos_gem->size,
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2016-08-03 20:46:00 +00:00
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exynos_gem->dma_attrs);
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2012-11-19 08:25:28 +00:00
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if (ret < 0) {
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DRM_ERROR("failed to mmap.\n");
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return ret;
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}
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return 0;
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}
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2011-10-04 10:19:01 +00:00
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static struct fb_ops exynos_drm_fb_ops = {
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.owner = THIS_MODULE,
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2016-11-13 23:03:17 +00:00
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DRM_FB_HELPER_DEFAULT_OPS,
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2012-11-19 08:25:28 +00:00
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.fb_mmap = exynos_drm_fb_mmap,
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2015-07-22 09:28:09 +00:00
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.fb_fillrect = drm_fb_helper_cfb_fillrect,
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.fb_copyarea = drm_fb_helper_cfb_copyarea,
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.fb_imageblit = drm_fb_helper_cfb_imageblit,
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2011-10-04 10:19:01 +00:00
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};
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2011-10-14 04:29:46 +00:00
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static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
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2015-09-01 07:22:49 +00:00
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struct drm_fb_helper_surface_size *sizes,
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2015-10-02 00:33:47 +00:00
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struct exynos_drm_gem *exynos_gem)
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2011-10-04 10:19:01 +00:00
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{
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2015-09-01 07:22:50 +00:00
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struct fb_info *fbi;
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2015-09-01 07:22:49 +00:00
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struct drm_framebuffer *fb = helper->fb;
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2016-12-14 21:32:20 +00:00
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unsigned int size = fb->width * fb->height * fb->format->cpp[0];
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2015-02-04 09:23:19 +00:00
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unsigned int nr_pages;
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2011-10-14 04:29:46 +00:00
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unsigned long offset;
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2011-10-04 10:19:01 +00:00
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2015-09-01 07:22:50 +00:00
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fbi = drm_fb_helper_alloc_fbi(helper);
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if (IS_ERR(fbi)) {
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DRM_ERROR("failed to allocate fb info.\n");
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return PTR_ERR(fbi);
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}
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fbi->par = helper;
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fbi->flags = FBINFO_FLAG_DEFAULT;
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fbi->fbops = &exynos_drm_fb_ops;
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2016-12-14 21:31:35 +00:00
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drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->format->depth);
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2015-03-11 14:23:11 +00:00
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drm_fb_helper_fill_var(fbi, helper, sizes->fb_width, sizes->fb_height);
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2011-10-04 10:19:01 +00:00
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2015-10-02 00:33:47 +00:00
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nr_pages = exynos_gem->size >> PAGE_SHIFT;
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2015-02-04 09:23:19 +00:00
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2015-10-02 00:33:47 +00:00
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exynos_gem->kvaddr = (void __iomem *) vmap(exynos_gem->pages, nr_pages,
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VM_MAP, pgprot_writecombine(PAGE_KERNEL));
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if (!exynos_gem->kvaddr) {
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2015-02-04 09:23:19 +00:00
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DRM_ERROR("failed to map pages to kernel space.\n");
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return -EIO;
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2012-12-07 08:51:27 +00:00
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}
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2016-12-14 21:32:20 +00:00
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offset = fbi->var.xoffset * fb->format->cpp[0];
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2011-12-19 22:06:49 +00:00
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offset += fbi->var.yoffset * fb->pitches[0];
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2011-10-04 10:19:01 +00:00
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2015-10-02 00:33:47 +00:00
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fbi->screen_base = exynos_gem->kvaddr + offset;
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2011-10-04 10:19:01 +00:00
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fbi->screen_size = size;
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2014-09-01 12:28:00 +00:00
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fbi->fix.smem_len = size;
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2011-10-14 04:29:46 +00:00
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return 0;
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2011-10-04 10:19:01 +00:00
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}
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static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct exynos_drm_fbdev *exynos_fbdev = to_exynos_fbdev(helper);
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2015-10-02 00:33:47 +00:00
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struct exynos_drm_gem *exynos_gem;
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2011-10-04 10:19:01 +00:00
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struct drm_device *dev = helper->dev;
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2011-12-08 06:05:19 +00:00
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struct drm_mode_fb_cmd2 mode_cmd = { 0 };
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2011-12-13 05:46:57 +00:00
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unsigned long size;
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2011-10-04 10:19:01 +00:00
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int ret;
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DRM_DEBUG_KMS("surface width(%d), height(%d) and bpp(%d\n",
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sizes->surface_width, sizes->surface_height,
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sizes->surface_bpp);
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mode_cmd.width = sizes->surface_width;
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mode_cmd.height = sizes->surface_height;
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2011-12-08 06:05:19 +00:00
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mode_cmd.pitches[0] = sizes->surface_width * (sizes->surface_bpp >> 3);
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mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
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sizes->surface_depth);
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2011-10-04 10:19:01 +00:00
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2011-12-13 05:46:57 +00:00
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size = mode_cmd.pitches[0] * mode_cmd.height;
|
2012-03-16 09:47:05 +00:00
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2015-10-02 00:33:47 +00:00
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exynos_gem = exynos_drm_gem_create(dev, EXYNOS_BO_CONTIG, size);
|
2013-08-06 11:52:04 +00:00
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|
/*
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* If physically contiguous memory allocation fails and if IOMMU is
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* supported then try to get buffer from non physically contiguous
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* memory area.
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*/
|
2015-10-02 00:33:47 +00:00
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if (IS_ERR(exynos_gem) && is_drm_iommu_supported(dev)) {
|
2016-12-12 09:28:47 +00:00
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dev_warn(dev->dev, "contiguous FB allocation failed, falling back to non-contiguous\n");
|
2015-10-02 00:33:47 +00:00
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exynos_gem = exynos_drm_gem_create(dev, EXYNOS_BO_NONCONTIG,
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size);
|
2013-08-06 11:52:04 +00:00
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}
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2016-03-30 09:40:48 +00:00
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if (IS_ERR(exynos_gem))
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return PTR_ERR(exynos_gem);
|
2011-12-13 05:46:57 +00:00
|
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2015-10-02 00:33:47 +00:00
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exynos_fbdev->exynos_gem = exynos_gem;
|
2011-12-13 05:46:57 +00:00
|
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|
2015-10-02 00:33:47 +00:00
|
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|
helper->fb =
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exynos_drm_framebuffer_init(dev, &mode_cmd, &exynos_gem, 1);
|
2013-04-29 06:57:05 +00:00
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if (IS_ERR(helper->fb)) {
|
2011-10-04 10:19:01 +00:00
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|
DRM_ERROR("failed to create drm framebuffer.\n");
|
2011-12-13 05:46:57 +00:00
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ret = PTR_ERR(helper->fb);
|
2012-12-07 09:06:43 +00:00
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goto err_destroy_gem;
|
2011-10-04 10:19:01 +00:00
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|
}
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|
2015-10-02 00:33:47 +00:00
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ret = exynos_drm_fbdev_update(helper, sizes, exynos_gem);
|
2012-12-07 09:06:43 +00:00
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if (ret < 0)
|
2015-07-22 09:28:09 +00:00
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goto err_destroy_framebuffer;
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2012-12-07 09:06:43 +00:00
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return ret;
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|
err_destroy_framebuffer:
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drm_framebuffer_cleanup(helper->fb);
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|
err_destroy_gem:
|
2015-10-02 00:33:47 +00:00
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exynos_drm_gem_destroy(exynos_gem);
|
2011-10-04 10:19:01 +00:00
|
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|
2016-03-30 09:40:48 +00:00
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/*
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* if failed, all resources allocated above would be released by
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|
* drm_mode_config_cleanup() when drm_load() had been called prior
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|
* to any specific driver such as fimd or hdmi driver.
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|
|
*/
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2011-10-04 10:19:01 +00:00
|
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return ret;
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|
}
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|
2014-06-27 15:19:23 +00:00
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static const struct drm_fb_helper_funcs exynos_drm_fb_helper_funcs = {
|
2013-01-21 22:42:49 +00:00
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.fb_probe = exynos_drm_fbdev_create,
|
2011-10-04 10:19:01 +00:00
|
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};
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int exynos_drm_fbdev_init(struct drm_device *dev)
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{
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struct exynos_drm_fbdev *fbdev;
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struct exynos_drm_private *private = dev->dev_private;
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struct drm_fb_helper *helper;
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int ret;
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if (!dev->mode_config.num_crtc || !dev->mode_config.num_connector)
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return 0;
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fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
|
2013-08-19 10:04:55 +00:00
|
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|
if (!fbdev)
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2011-10-04 10:19:01 +00:00
|
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|
return -ENOMEM;
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|
|
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|
|
private->fb_helper = helper = &fbdev->drm_fb_helper;
|
2014-06-27 15:19:24 +00:00
|
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|
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drm_fb_helper_prepare(dev, helper, &exynos_drm_fb_helper_funcs);
|
2011-10-04 10:19:01 +00:00
|
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|
|
drm: Rely on mode_config data for fb_helper initialization
Instead of receiving the num_crts as a parameter, we can read it
directly from the mode_config structure. I audited the drivers that
invoke this helper and I believe all of them initialize the mode_config
struct accordingly, prior to calling the fb_helper.
I used the following coccinelle hack to make this transformation, except
for the function headers and comment updates. The first and second
rules are split because I couldn't find a way to remove the unused
temporary variables at the same time I removed the parameter.
// <smpl>
@r@
expression A,B,D,E;
identifier C;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
|
- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
|
- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
expression A,B,C,D,E;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
|
- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
|
- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
identifier r.C;
type T;
expression V;
@@
- T C;
<...
when != C
- C = V;
...>
// </smpl>
Changes since v1:
- Rebased on top of the tip of drm-misc-next.
- Remove mention to sti since a proper fix got merged.
Suggested-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170202162640.27261-1-krisman@collabora.co.uk
2017-02-02 16:26:40 +00:00
|
|
|
ret = drm_fb_helper_init(dev, helper, MAX_CONNECTOR);
|
2011-10-04 10:19:01 +00:00
|
|
|
if (ret < 0) {
|
|
|
|
DRM_ERROR("failed to initialize drm fb helper.\n");
|
|
|
|
goto err_init;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = drm_fb_helper_single_add_all_connectors(helper);
|
|
|
|
if (ret < 0) {
|
|
|
|
DRM_ERROR("failed to register drm_fb_helper_connector.\n");
|
|
|
|
goto err_setup;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = drm_fb_helper_initial_config(helper, PREFERRED_BPP);
|
|
|
|
if (ret < 0) {
|
|
|
|
DRM_ERROR("failed to set up hw configuration.\n");
|
|
|
|
goto err_setup;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_setup:
|
|
|
|
drm_fb_helper_fini(helper);
|
|
|
|
|
|
|
|
err_init:
|
|
|
|
private->fb_helper = NULL;
|
|
|
|
kfree(fbdev);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void exynos_drm_fbdev_destroy(struct drm_device *dev,
|
|
|
|
struct drm_fb_helper *fb_helper)
|
|
|
|
{
|
2012-12-07 08:51:27 +00:00
|
|
|
struct exynos_drm_fbdev *exynos_fbd = to_exynos_fbdev(fb_helper);
|
2015-10-02 00:33:47 +00:00
|
|
|
struct exynos_drm_gem *exynos_gem = exynos_fbd->exynos_gem;
|
2011-10-04 10:19:01 +00:00
|
|
|
struct drm_framebuffer *fb;
|
|
|
|
|
2016-07-21 17:23:25 +00:00
|
|
|
vunmap(exynos_gem->kvaddr);
|
2012-12-07 08:51:27 +00:00
|
|
|
|
2011-10-04 10:19:01 +00:00
|
|
|
/* release drm framebuffer and real buffer */
|
|
|
|
if (fb_helper->fb && fb_helper->fb->funcs) {
|
|
|
|
fb = fb_helper->fb;
|
2016-12-27 10:49:23 +00:00
|
|
|
if (fb)
|
2012-09-05 21:48:38 +00:00
|
|
|
drm_framebuffer_remove(fb);
|
2011-10-04 10:19:01 +00:00
|
|
|
}
|
|
|
|
|
2015-07-22 09:28:09 +00:00
|
|
|
drm_fb_helper_unregister_fbi(fb_helper);
|
2011-10-04 10:19:01 +00:00
|
|
|
|
|
|
|
drm_fb_helper_fini(fb_helper);
|
|
|
|
}
|
|
|
|
|
|
|
|
void exynos_drm_fbdev_fini(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct exynos_drm_private *private = dev->dev_private;
|
|
|
|
struct exynos_drm_fbdev *fbdev;
|
|
|
|
|
|
|
|
if (!private || !private->fb_helper)
|
|
|
|
return;
|
|
|
|
|
|
|
|
fbdev = to_exynos_fbdev(private->fb_helper);
|
|
|
|
|
|
|
|
exynos_drm_fbdev_destroy(dev, private->fb_helper);
|
|
|
|
kfree(fbdev);
|
|
|
|
private->fb_helper = NULL;
|
|
|
|
}
|
|
|
|
|
2017-09-14 12:01:01 +00:00
|
|
|
void exynos_drm_fbdev_suspend(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct exynos_drm_private *private = dev->dev_private;
|
|
|
|
|
|
|
|
console_lock();
|
|
|
|
drm_fb_helper_set_suspend(private->fb_helper, 1);
|
|
|
|
console_unlock();
|
|
|
|
}
|
|
|
|
|
|
|
|
void exynos_drm_fbdev_resume(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct exynos_drm_private *private = dev->dev_private;
|
|
|
|
|
|
|
|
console_lock();
|
|
|
|
drm_fb_helper_set_suspend(private->fb_helper, 0);
|
|
|
|
console_unlock();
|
|
|
|
}
|