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d4016e3117
Rework fbdev probing to support fbdev_probe in struct drm_driver and remove the old fb_probe callback. Provide an initializer macro for struct drm_driver that sets the callback according to the kernel configuration. Call drm_client_setup() to run the kernel's default client setup for DRM. Set fbdev_probe in struct drm_driver, so that the client setup can start the common fbdev client. The exynos-drm driver specifies a preferred color mode of 32. As this is the default if no format has been given, leave it out entirely. v5: - select DRM_CLIENT_SELECTION v4: - revert an unrelated cleanup (Javier) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Cc: Inki Dae <inki.dae@samsung.com> Cc: Seung-Woo Kim <sw0312.kim@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-75-tzimmermann@suse.de
140 lines
3.6 KiB
C
140 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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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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#include <linux/fb.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_framebuffer.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_prime.h>
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#include <drm/exynos_drm.h>
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#include "exynos_drm_drv.h"
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#include "exynos_drm_fb.h"
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#include "exynos_drm_fbdev.h"
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#define MAX_CONNECTOR 4
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static int exynos_drm_fb_mmap(struct fb_info *info, 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 drm_gem_object *obj = drm_gem_fb_get_obj(helper->fb, 0);
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return drm_gem_prime_mmap(obj, vma);
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}
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static void exynos_drm_fb_destroy(struct fb_info *info)
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{
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struct drm_fb_helper *fb_helper = info->par;
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struct drm_framebuffer *fb = fb_helper->fb;
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drm_fb_helper_fini(fb_helper);
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drm_framebuffer_remove(fb);
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drm_client_release(&fb_helper->client);
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drm_fb_helper_unprepare(fb_helper);
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kfree(fb_helper);
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}
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static const struct fb_ops exynos_drm_fb_ops = {
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.owner = THIS_MODULE,
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__FB_DEFAULT_DMAMEM_OPS_RDWR,
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DRM_FB_HELPER_DEFAULT_OPS,
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__FB_DEFAULT_DMAMEM_OPS_DRAW,
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.fb_mmap = exynos_drm_fb_mmap,
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.fb_destroy = exynos_drm_fb_destroy,
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};
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static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes,
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struct exynos_drm_gem *exynos_gem)
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{
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struct fb_info *fbi;
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struct drm_framebuffer *fb = helper->fb;
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unsigned int size = fb->width * fb->height * fb->format->cpp[0];
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unsigned long offset;
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fbi = drm_fb_helper_alloc_info(helper);
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if (IS_ERR(fbi)) {
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DRM_DEV_ERROR(to_dma_dev(helper->dev),
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"failed to allocate fb info.\n");
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return PTR_ERR(fbi);
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}
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fbi->fbops = &exynos_drm_fb_ops;
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drm_fb_helper_fill_info(fbi, helper, sizes);
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offset = fbi->var.xoffset * fb->format->cpp[0];
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offset += fbi->var.yoffset * fb->pitches[0];
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fbi->flags |= FBINFO_VIRTFB;
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fbi->screen_buffer = exynos_gem->kvaddr + offset;
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fbi->screen_size = size;
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fbi->fix.smem_len = size;
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return 0;
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}
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static const struct drm_fb_helper_funcs exynos_drm_fbdev_helper_funcs = {
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};
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int exynos_drm_fbdev_driver_fbdev_probe(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_gem *exynos_gem;
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struct drm_device *dev = helper->dev;
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struct drm_mode_fb_cmd2 mode_cmd = { 0 };
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unsigned long size;
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int ret;
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DRM_DEV_DEBUG_KMS(dev->dev,
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"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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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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size = mode_cmd.pitches[0] * mode_cmd.height;
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exynos_gem = exynos_drm_gem_create(dev, EXYNOS_BO_WC, size, true);
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if (IS_ERR(exynos_gem))
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return PTR_ERR(exynos_gem);
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helper->fb =
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exynos_drm_framebuffer_init(dev, &mode_cmd, &exynos_gem, 1);
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if (IS_ERR(helper->fb)) {
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DRM_DEV_ERROR(dev->dev, "failed to create drm framebuffer.\n");
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ret = PTR_ERR(helper->fb);
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goto err_destroy_gem;
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}
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helper->funcs = &exynos_drm_fbdev_helper_funcs;
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ret = exynos_drm_fbdev_update(helper, sizes, exynos_gem);
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if (ret < 0)
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goto err_destroy_framebuffer;
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return 0;
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err_destroy_framebuffer:
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drm_framebuffer_cleanup(helper->fb);
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helper->fb = NULL;
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err_destroy_gem:
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exynos_drm_gem_destroy(exynos_gem);
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return ret;
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}
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