From eae9b5437ab968e7f26afc5835c3b7384e0f84e0 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Tue, 24 Sep 2024 09:13:17 +0200 Subject: drm/omapdrm: Remove struct drm_fb_helper from struct omap_fbdev. Store instances of drm_fb_helper and struct omap_fbdev separately. This will allow omapdrm to use the common fbdev client, which allocates its own instance of struct drm_fb_helper. There is at most one instance of each per DRM device, so both can be referenced directly from the omap and DRM device structures. A later patchset might rework the common fbdev client to allow for storing both, drm_fb_helper and omap_fbdev, together in the same place. Signed-off-by: Thomas Zimmermann Cc: Tomi Valkeinen Acked-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-80-tzimmermann@suse.de --- drivers/gpu/drm/omapdrm/omap_fbdev.c | 42 ++++++++++++++++++++---------------- 1 file changed, 23 insertions(+), 19 deletions(-) (limited to 'drivers/gpu/drm/omapdrm/omap_fbdev.c') diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c index 523be34682ca..044e80403c3b 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include "omap_drv.h" @@ -26,10 +27,8 @@ module_param_named(ywrap, ywrap_enabled, bool, 0644); * fbdev funcs, to implement legacy fbdev interface on top of drm driver */ -#define to_omap_fbdev(x) container_of(x, struct omap_fbdev, base) - struct omap_fbdev { - struct drm_fb_helper base; + struct drm_device *dev; bool ywrap_enabled; /* for deferred dmm roll when getting called in atomic ctx */ @@ -41,7 +40,7 @@ static struct drm_fb_helper *get_fb(struct fb_info *fbi); static void pan_worker(struct work_struct *work) { struct omap_fbdev *fbdev = container_of(work, struct omap_fbdev, work); - struct drm_fb_helper *helper = &fbdev->base; + struct drm_fb_helper *helper = fbdev->dev->fb_helper; struct fb_info *fbi = helper->info; struct drm_gem_object *bo = drm_gem_fb_get_obj(helper->fb, 0); int npages; @@ -55,24 +54,25 @@ FB_GEN_DEFAULT_DEFERRED_DMAMEM_OPS(omap_fbdev, drm_fb_helper_damage_range, drm_fb_helper_damage_area) -static int omap_fbdev_pan_display(struct fb_var_screeninfo *var, - struct fb_info *fbi) +static int omap_fbdev_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi) { struct drm_fb_helper *helper = get_fb(fbi); - struct omap_fbdev *fbdev = to_omap_fbdev(helper); + struct omap_drm_private *priv; + struct omap_fbdev *fbdev; if (!helper) goto fallback; + priv = helper->dev->dev_private; + fbdev = priv->fbdev; + if (!fbdev->ywrap_enabled) goto fallback; - if (drm_can_sleep()) { + if (drm_can_sleep()) pan_worker(&fbdev->work); - } else { - struct omap_drm_private *priv = helper->dev->dev_private; + else queue_work(priv->wq, &fbdev->work); - } return 0; @@ -92,7 +92,6 @@ static void omap_fbdev_fb_destroy(struct fb_info *info) struct drm_fb_helper *helper = info->par; struct drm_framebuffer *fb = helper->fb; struct drm_gem_object *bo = drm_gem_fb_get_obj(fb, 0); - struct omap_fbdev *fbdev = to_omap_fbdev(helper); DBG(); @@ -104,7 +103,7 @@ static void omap_fbdev_fb_destroy(struct fb_info *info) drm_client_release(&helper->client); drm_fb_helper_unprepare(helper); - kfree(fbdev); + kfree(helper); } /* @@ -128,9 +127,9 @@ static const struct fb_ops omap_fb_ops = { static int omap_fbdev_create(struct drm_fb_helper *helper, struct drm_fb_helper_surface_size *sizes) { - struct omap_fbdev *fbdev = to_omap_fbdev(helper); struct drm_device *dev = helper->dev; struct omap_drm_private *priv = dev->dev_private; + struct omap_fbdev *fbdev = priv->fbdev; struct drm_framebuffer *fb = NULL; union omap_gem_size gsize; struct fb_info *fbi = NULL; @@ -338,6 +337,7 @@ static const struct drm_client_funcs omap_fbdev_client_funcs = { void omap_fbdev_setup(struct drm_device *dev) { + struct omap_drm_private *priv = dev->dev_private; struct omap_fbdev *fbdev; struct drm_fb_helper *helper; int ret; @@ -345,24 +345,28 @@ void omap_fbdev_setup(struct drm_device *dev) drm_WARN(dev, !dev->registered, "Device has not been registered.\n"); drm_WARN(dev, dev->fb_helper, "fb_helper is already set!\n"); - fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL); + fbdev = drmm_kzalloc(dev, sizeof(*fbdev), GFP_KERNEL); if (!fbdev) return; - helper = &fbdev->base; + fbdev->dev = dev; + INIT_WORK(&fbdev->work, pan_worker); + + priv->fbdev = fbdev; + helper = kzalloc(sizeof(*helper), GFP_KERNEL); + if (!helper) + return; drm_fb_helper_prepare(dev, helper, 32, &omap_fb_helper_funcs); ret = drm_client_init(dev, &helper->client, "fbdev", &omap_fbdev_client_funcs); if (ret) goto err_drm_client_init; - INIT_WORK(&fbdev->work, pan_worker); - drm_client_register(&helper->client); return; err_drm_client_init: drm_fb_helper_unprepare(helper); - kfree(fbdev); + kfree(helper); } -- cgit v1.2.3-70-g09d2 From 15499749fbb864cc0737bc8ecaf0e28a6b6d62dd Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Tue, 24 Sep 2024 09:13:18 +0200 Subject: drm/omapdrm: Run DRM default client setup 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 omapdrm 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 Signed-off-by: Thomas Zimmermann Cc: Tomi Valkeinen Acked-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-81-tzimmermann@suse.de --- drivers/gpu/drm/omapdrm/Kconfig | 1 + drivers/gpu/drm/omapdrm/omap_drv.c | 1 + drivers/gpu/drm/omapdrm/omap_fbdev.c | 131 ++++++++--------------------------- drivers/gpu/drm/omapdrm/omap_fbdev.h | 8 +++ 4 files changed, 39 insertions(+), 102 deletions(-) (limited to 'drivers/gpu/drm/omapdrm/omap_fbdev.c') diff --git a/drivers/gpu/drm/omapdrm/Kconfig b/drivers/gpu/drm/omapdrm/Kconfig index fbd9af758581..9d4016bd0f44 100644 --- a/drivers/gpu/drm/omapdrm/Kconfig +++ b/drivers/gpu/drm/omapdrm/Kconfig @@ -4,6 +4,7 @@ config DRM_OMAP depends on MMU depends on DRM && OF depends on ARCH_OMAP2PLUS || (COMPILE_TEST && PAGE_SIZE_LESS_THAN_64KB) + select DRM_CLIENT_SELECTION select DRM_KMS_HELPER select DRM_DISPLAY_HELPER select DRM_BRIDGE_CONNECTOR diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index a982378aa141..1796cd20a877 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -647,6 +647,7 @@ static const struct drm_driver omap_drm_driver = { .gem_prime_import = omap_gem_prime_import, .dumb_create = omap_gem_dumb_create, .dumb_map_offset = omap_gem_dumb_map_offset, + OMAP_FBDEV_DRIVER_OPS, .ioctls = ioctls, .num_ioctls = DRM_OMAP_NUM_IOCTLS, .fops = &omapdriver_fops, diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c index 044e80403c3b..f4bd0c6e3f34 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -6,6 +6,7 @@ #include +#include #include #include #include @@ -124,8 +125,32 @@ static const struct fb_ops omap_fb_ops = { .fb_destroy = omap_fbdev_fb_destroy, }; -static int omap_fbdev_create(struct drm_fb_helper *helper, - struct drm_fb_helper_surface_size *sizes) +static int omap_fbdev_dirty(struct drm_fb_helper *helper, struct drm_clip_rect *clip) +{ + if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2)) + return 0; + + if (helper->fb->funcs->dirty) + return helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1); + + return 0; +} + +static const struct drm_fb_helper_funcs omap_fbdev_helper_funcs = { + .fb_dirty = omap_fbdev_dirty, +}; + +static struct drm_fb_helper *get_fb(struct fb_info *fbi) +{ + if (!fbi || strcmp(fbi->fix.id, MODULE_NAME)) { + /* these are not the fb's you're looking for */ + return NULL; + } + return fbi->par; +} + +int omap_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) { struct drm_device *dev = helper->dev; struct omap_drm_private *priv = dev->dev_private; @@ -207,6 +232,7 @@ static int omap_fbdev_create(struct drm_fb_helper *helper, DBG("fbi=%p, dev=%p", fbi, dev); + helper->funcs = &omap_fbdev_helper_funcs; helper->fb = fb; fbi->fbops = &omap_fb_ops; @@ -253,94 +279,10 @@ fail: return ret; } -static int omap_fbdev_dirty(struct drm_fb_helper *helper, struct drm_clip_rect *clip) -{ - if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2)) - return 0; - - if (helper->fb->funcs->dirty) - return helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1); - - return 0; -} - -static const struct drm_fb_helper_funcs omap_fb_helper_funcs = { - .fb_probe = omap_fbdev_create, - .fb_dirty = omap_fbdev_dirty, -}; - -static struct drm_fb_helper *get_fb(struct fb_info *fbi) -{ - if (!fbi || strcmp(fbi->fix.id, MODULE_NAME)) { - /* these are not the fb's you're looking for */ - return NULL; - } - return fbi->par; -} - -/* - * struct drm_client - */ - -static void omap_fbdev_client_unregister(struct drm_client_dev *client) -{ - struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client); - - if (fb_helper->info) { - drm_fb_helper_unregister_info(fb_helper); - } else { - drm_client_release(&fb_helper->client); - drm_fb_helper_unprepare(fb_helper); - kfree(fb_helper); - } -} - -static int omap_fbdev_client_restore(struct drm_client_dev *client) -{ - drm_fb_helper_lastclose(client->dev); - - return 0; -} - -static int omap_fbdev_client_hotplug(struct drm_client_dev *client) -{ - struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client); - struct drm_device *dev = client->dev; - int ret; - - if (dev->fb_helper) - return drm_fb_helper_hotplug_event(dev->fb_helper); - - ret = drm_fb_helper_init(dev, fb_helper); - if (ret) - goto err_drm_err; - - ret = drm_fb_helper_initial_config(fb_helper); - if (ret) - goto err_drm_fb_helper_fini; - - return 0; - -err_drm_fb_helper_fini: - drm_fb_helper_fini(fb_helper); -err_drm_err: - drm_err(dev, "Failed to setup fbdev emulation (ret=%d)\n", ret); - return ret; -} - -static const struct drm_client_funcs omap_fbdev_client_funcs = { - .owner = THIS_MODULE, - .unregister = omap_fbdev_client_unregister, - .restore = omap_fbdev_client_restore, - .hotplug = omap_fbdev_client_hotplug, -}; - void omap_fbdev_setup(struct drm_device *dev) { struct omap_drm_private *priv = dev->dev_private; struct omap_fbdev *fbdev; - struct drm_fb_helper *helper; - int ret; drm_WARN(dev, !dev->registered, "Device has not been registered.\n"); drm_WARN(dev, dev->fb_helper, "fb_helper is already set!\n"); @@ -353,20 +295,5 @@ void omap_fbdev_setup(struct drm_device *dev) priv->fbdev = fbdev; - helper = kzalloc(sizeof(*helper), GFP_KERNEL); - if (!helper) - return; - drm_fb_helper_prepare(dev, helper, 32, &omap_fb_helper_funcs); - - ret = drm_client_init(dev, &helper->client, "fbdev", &omap_fbdev_client_funcs); - if (ret) - goto err_drm_client_init; - - drm_client_register(&helper->client); - - return; - -err_drm_client_init: - drm_fb_helper_unprepare(helper); - kfree(helper); + drm_client_setup(dev, NULL); } diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.h b/drivers/gpu/drm/omapdrm/omap_fbdev.h index 74c691a8d45f..283e35b42ada 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.h +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.h @@ -10,10 +10,18 @@ #define __OMAPDRM_FBDEV_H__ struct drm_device; +struct drm_fb_helper; +struct drm_fb_helper_surface_size; #ifdef CONFIG_DRM_FBDEV_EMULATION +int omap_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes); +#define OMAP_FBDEV_DRIVER_OPS \ + .fbdev_probe = omap_fbdev_driver_fbdev_probe void omap_fbdev_setup(struct drm_device *dev); #else +#define OMAP_FBDEV_DRIVER_OPS \ + .fbdev_probe = NULL static inline void omap_fbdev_setup(struct drm_device *dev) { } -- cgit v1.2.3-70-g09d2