From patchwork Fri Nov 8 12:33:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 11234691 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F20AE2D2C for ; Fri, 8 Nov 2019 12:33:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0446222C6 for ; Fri, 8 Nov 2019 12:33:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726232AbfKHMdj (ORCPT ); Fri, 8 Nov 2019 07:33:39 -0500 Received: from mx2.suse.de ([195.135.220.15]:50578 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726200AbfKHMdj (ORCPT ); Fri, 8 Nov 2019 07:33:39 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 5B001B220; Fri, 8 Nov 2019 12:33:36 +0000 (UTC) From: Thomas Zimmermann To: airlied@redhat.com, sean@poorly.run, daniel@ffwll.ch, b.zolnierkie@samsung.com, noralf@tronnes.org, kraxel@redhat.com, sam@ravnborg.org, emil.velikov@collabora.com Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, Thomas Zimmermann Subject: [PATCH 1/4] drm/udl: Replace fbdev code with generic emulation Date: Fri, 8 Nov 2019 13:33:30 +0100 Message-Id: <20191108123333.25274-2-tzimmermann@suse.de> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191108123333.25274-1-tzimmermann@suse.de> References: <20191108123333.25274-1-tzimmermann@suse.de> MIME-Version: 1.0 Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org The udl driver can use the generic fbdev implementation. Convert it. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/udl/udl_drv.c | 4 +- drivers/gpu/drm/udl/udl_drv.h | 5 - drivers/gpu/drm/udl/udl_fb.c | 270 +----------------------------- drivers/gpu/drm/udl/udl_main.c | 2 - drivers/gpu/drm/udl/udl_modeset.c | 3 +- 5 files changed, 7 insertions(+), 277 deletions(-) diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 563cc5809e56..55c0f9dfee29 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -7,6 +7,7 @@ #include #include +#include #include #include #include @@ -47,6 +48,8 @@ static struct drm_driver driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM, .release = udl_driver_release, + .lastclose = drm_fb_helper_lastclose, + /* gem hooks */ .gem_create_object = udl_driver_gem_create_object, @@ -119,7 +122,6 @@ static void udl_usb_disconnect(struct usb_interface *interface) struct drm_device *dev = usb_get_intfdata(interface); drm_kms_helper_poll_disable(dev); - udl_fbdev_unplug(dev); udl_drop_usb(dev); drm_dev_unplug(dev); drm_dev_put(dev); diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h index 987d99ae2dfa..5bdc57779f95 100644 --- a/drivers/gpu/drm/udl/udl_drv.h +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -47,8 +47,6 @@ struct urb_list { size_t size; }; -struct udl_fbdev; - struct udl_device { struct drm_device drm; struct device *dev; @@ -62,7 +60,6 @@ struct udl_device { struct urb_list urbs; atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */ - struct udl_fbdev *fbdev; char mode_buf[1024]; uint32_t mode_buf_len; atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */ @@ -98,8 +95,6 @@ int udl_init(struct udl_device *udl); void udl_fini(struct drm_device *dev); int udl_fbdev_init(struct drm_device *dev); -void udl_fbdev_cleanup(struct drm_device *dev); -void udl_fbdev_unplug(struct drm_device *dev); struct drm_framebuffer * udl_fb_user_fb_create(struct drm_device *dev, struct drm_file *file, diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c index f8153b726343..afe74f892a2b 100644 --- a/drivers/gpu/drm/udl/udl_fb.c +++ b/drivers/gpu/drm/udl/udl_fb.c @@ -20,19 +20,9 @@ #include "udl_drv.h" -#define DL_DEFIO_WRITE_DELAY (HZ/20) /* fb_deferred_io.delay in jiffies */ - -static int fb_defio = 0; /* Optionally enable experimental fb_defio mmap support */ static int fb_bpp = 16; module_param(fb_bpp, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); -module_param(fb_defio, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); - -struct udl_fbdev { - struct drm_fb_helper helper; /* must be first */ - struct udl_framebuffer ufb; - int fb_count; -}; #define DL_ALIGN_UP(x, a) ALIGN(x, a) #define DL_ALIGN_DOWN(x, a) ALIGN_DOWN(x, a) @@ -156,123 +146,6 @@ int udl_handle_damage(struct udl_framebuffer *fb, int x, int y, return 0; } -static int udl_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) -{ - unsigned long start = vma->vm_start; - unsigned long size = vma->vm_end - vma->vm_start; - unsigned long offset; - unsigned long page, pos; - - if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) - return -EINVAL; - - offset = vma->vm_pgoff << PAGE_SHIFT; - - if (offset > info->fix.smem_len || size > info->fix.smem_len - offset) - return -EINVAL; - - pos = (unsigned long)info->fix.smem_start + offset; - - pr_debug("mmap() framebuffer addr:%lu size:%lu\n", - pos, size); - - /* We don't want the framebuffer to be mapped encrypted */ - vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); - - while (size > 0) { - page = vmalloc_to_pfn((void *)pos); - if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) - return -EAGAIN; - - start += PAGE_SIZE; - pos += PAGE_SIZE; - if (size > PAGE_SIZE) - size -= PAGE_SIZE; - else - size = 0; - } - - /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */ - return 0; -} - -/* - * It's common for several clients to have framebuffer open simultaneously. - * e.g. both fbcon and X. Makes things interesting. - * Assumes caller is holding info->lock (for open and release at least) - */ -static int udl_fb_open(struct fb_info *info, int user) -{ - struct udl_fbdev *ufbdev = info->par; - struct drm_device *dev = ufbdev->ufb.base.dev; - struct udl_device *udl = to_udl(dev); - - /* If the USB device is gone, we don't accept new opens */ - if (drm_dev_is_unplugged(&udl->drm)) - return -ENODEV; - - ufbdev->fb_count++; - -#ifdef CONFIG_DRM_FBDEV_EMULATION - if (fb_defio && (info->fbdefio == NULL)) { - /* enable defio at last moment if not disabled by client */ - - struct fb_deferred_io *fbdefio; - - fbdefio = kzalloc(sizeof(struct fb_deferred_io), GFP_KERNEL); - - if (fbdefio) { - fbdefio->delay = DL_DEFIO_WRITE_DELAY; - fbdefio->deferred_io = drm_fb_helper_deferred_io; - } - - info->fbdefio = fbdefio; - fb_deferred_io_init(info); - } -#endif - - pr_debug("open /dev/fb%d user=%d fb_info=%p count=%d\n", - info->node, user, info, ufbdev->fb_count); - - return 0; -} - - -/* - * Assumes caller is holding info->lock mutex (for open and release at least) - */ -static int udl_fb_release(struct fb_info *info, int user) -{ - struct udl_fbdev *ufbdev = info->par; - - ufbdev->fb_count--; - -#ifdef CONFIG_DRM_FBDEV_EMULATION - if ((ufbdev->fb_count == 0) && (info->fbdefio)) { - fb_deferred_io_cleanup(info); - kfree(info->fbdefio); - info->fbdefio = NULL; - info->fbops->fb_mmap = udl_fb_mmap; - } -#endif - - pr_debug("released /dev/fb%d user=%d count=%d\n", - info->node, user, ufbdev->fb_count); - - return 0; -} - -static struct fb_ops udlfb_ops = { - .owner = THIS_MODULE, - DRM_FB_HELPER_DEFAULT_OPS, - .fb_fillrect = drm_fb_helper_sys_fillrect, - .fb_copyarea = drm_fb_helper_sys_copyarea, - .fb_imageblit = drm_fb_helper_sys_imageblit, - .fb_mmap = udl_fb_mmap, - .fb_open = udl_fb_open, - .fb_release = udl_fb_release, -}; - static int udl_user_framebuffer_dirty(struct drm_framebuffer *fb, struct drm_file *file, unsigned flags, unsigned color, @@ -347,154 +220,15 @@ udl_framebuffer_init(struct drm_device *dev, return ret; } - -static int udlfb_create(struct drm_fb_helper *helper, - struct drm_fb_helper_surface_size *sizes) -{ - struct udl_fbdev *ufbdev = - container_of(helper, struct udl_fbdev, helper); - struct drm_device *dev = ufbdev->helper.dev; - struct fb_info *info; - struct drm_framebuffer *fb; - struct drm_mode_fb_cmd2 mode_cmd; - struct drm_gem_shmem_object *shmem; - void *vaddr; - uint32_t size; - int ret = 0; - - if (sizes->surface_bpp == 24) - sizes->surface_bpp = 32; - - mode_cmd.width = sizes->surface_width; - mode_cmd.height = sizes->surface_height; - mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8); - - mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, - sizes->surface_depth); - - size = mode_cmd.pitches[0] * mode_cmd.height; - size = ALIGN(size, PAGE_SIZE); - - shmem = drm_gem_shmem_create(dev, size); - if (IS_ERR(shmem)) { - ret = PTR_ERR(shmem); - goto out; - } - - vaddr = drm_gem_shmem_vmap(&shmem->base); - if (IS_ERR(vaddr)) { - ret = PTR_ERR(vaddr); - DRM_ERROR("failed to vmap fb\n"); - goto out_gfree; - } - - info = drm_fb_helper_alloc_fbi(helper); - if (IS_ERR(info)) { - ret = PTR_ERR(info); - goto out_gfree; - } - - ret = udl_framebuffer_init(dev, &ufbdev->ufb, &mode_cmd, shmem); - if (ret) - goto out_gfree; - - fb = &ufbdev->ufb.base; - - ufbdev->helper.fb = fb; - - info->screen_base = vaddr; - info->fix.smem_len = size; - info->fix.smem_start = (unsigned long)vaddr; - - info->fbops = &udlfb_ops; - drm_fb_helper_fill_info(info, &ufbdev->helper, sizes); - - DRM_DEBUG_KMS("allocated %dx%d vmal %p\n", - fb->width, fb->height, - ufbdev->ufb.shmem->vaddr); - - return ret; -out_gfree: - drm_gem_object_put_unlocked(&ufbdev->ufb.shmem->base); -out: - return ret; -} - -static const struct drm_fb_helper_funcs udl_fb_helper_funcs = { - .fb_probe = udlfb_create, -}; - -static void udl_fbdev_destroy(struct drm_device *dev, - struct udl_fbdev *ufbdev) -{ - drm_fb_helper_unregister_fbi(&ufbdev->helper); - drm_fb_helper_fini(&ufbdev->helper); - if (ufbdev->ufb.shmem) { - drm_framebuffer_unregister_private(&ufbdev->ufb.base); - drm_framebuffer_cleanup(&ufbdev->ufb.base); - drm_gem_object_put_unlocked(&ufbdev->ufb.shmem->base); - } -} - int udl_fbdev_init(struct drm_device *dev) { - struct udl_device *udl = to_udl(dev); int bpp_sel = fb_bpp; - struct udl_fbdev *ufbdev; int ret; - ufbdev = kzalloc(sizeof(struct udl_fbdev), GFP_KERNEL); - if (!ufbdev) - return -ENOMEM; - - udl->fbdev = ufbdev; - - drm_fb_helper_prepare(dev, &ufbdev->helper, &udl_fb_helper_funcs); - - ret = drm_fb_helper_init(dev, &ufbdev->helper, 1); - if (ret) - goto free; - - ret = drm_fb_helper_single_add_all_connectors(&ufbdev->helper); - if (ret) - goto fini; - - /* disable all the possible outputs/crtcs before entering KMS mode */ - drm_helper_disable_unused_functions(dev); - - ret = drm_fb_helper_initial_config(&ufbdev->helper, bpp_sel); + ret = drm_fbdev_generic_setup(dev, bpp_sel); if (ret) - goto fini; - + return ret; return 0; - -fini: - drm_fb_helper_fini(&ufbdev->helper); -free: - kfree(ufbdev); - return ret; -} - -void udl_fbdev_cleanup(struct drm_device *dev) -{ - struct udl_device *udl = to_udl(dev); - if (!udl->fbdev) - return; - - udl_fbdev_destroy(dev, udl->fbdev); - kfree(udl->fbdev); - udl->fbdev = NULL; -} - -void udl_fbdev_unplug(struct drm_device *dev) -{ - struct udl_device *udl = to_udl(dev); - struct udl_fbdev *ufbdev; - if (!udl->fbdev) - return; - - ufbdev = udl->fbdev; - drm_fb_helper_unlink_fbi(&ufbdev->helper); } struct drm_framebuffer * diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c index 4e854e017390..2a6399290f09 100644 --- a/drivers/gpu/drm/udl/udl_main.c +++ b/drivers/gpu/drm/udl/udl_main.c @@ -367,6 +367,4 @@ void udl_fini(struct drm_device *dev) if (udl->urbs.count) udl_free_urb_list(dev); - - udl_fbdev_cleanup(dev); } diff --git a/drivers/gpu/drm/udl/udl_modeset.c b/drivers/gpu/drm/udl/udl_modeset.c index bc1ab6060dc6..1517d5e881b8 100644 --- a/drivers/gpu/drm/udl/udl_modeset.c +++ b/drivers/gpu/drm/udl/udl_modeset.c @@ -10,6 +10,7 @@ */ #include +#include #include #include @@ -422,7 +423,7 @@ static int udl_crtc_init(struct drm_device *dev) static const struct drm_mode_config_funcs udl_mode_funcs = { .fb_create = udl_fb_user_fb_create, - .output_poll_changed = NULL, + .output_poll_changed = drm_fb_helper_output_poll_changed, }; int udl_modeset_init(struct drm_device *dev)