From 60c2f709d9b41184e0279d7538a5217885da8dde Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 31 Oct 2013 13:28:50 +0100 Subject: [PATCH] drm/tegra: Make legacy fbdev support optional A lot of the modern userspace is capable of working without the legacy fbdev support. kmscon can be used as a replacement for the framebuffer console, and KMS X drivers create their own framebuffers. Most people don't have a system where all of this works yet, though, so leave support enabled by default. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/Kconfig | 16 ++++++++++---- drivers/gpu/drm/tegra/drm.c | 2 ++ drivers/gpu/drm/tegra/drm.h | 6 +++++ drivers/gpu/drm/tegra/fb.c | 41 +++++++++++++++++++++-------------- 4 files changed, 45 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/tegra/Kconfig b/drivers/gpu/drm/tegra/Kconfig index ce214c3f4ef5..354ddb29231f 100644 --- a/drivers/gpu/drm/tegra/Kconfig +++ b/drivers/gpu/drm/tegra/Kconfig @@ -3,13 +3,9 @@ config DRM_TEGRA depends on ARCH_TEGRA || (ARM && COMPILE_TEST) depends on DRM depends on RESET_CONTROLLER - select DRM_KMS_FB_HELPER select DRM_KMS_HELPER select DRM_MIPI_DSI select DRM_PANEL - select FB_SYS_FILLRECT - select FB_SYS_COPYAREA - select FB_SYS_IMAGEBLIT select TEGRA_HOST1X help Choose this option if you have an NVIDIA Tegra SoC. @@ -19,6 +15,18 @@ config DRM_TEGRA if DRM_TEGRA +config DRM_TEGRA_FBDEV + bool "Enable legacy fbdev support" + select DRM_KMS_FB_HELPER + select FB_SYS_FILLRECT + select FB_SYS_COPYAREA + select FB_SYS_IMAGEBLIT + default y + help + Choose this option if you have a need for the legacy fbdev support. + Note that this support also provides the Linux console on top of + the Tegra modesetting driver. + config DRM_TEGRA_DEBUG bool "NVIDIA Tegra DRM debug support" help diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 08e9e3740c13..a0b34816298c 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -104,9 +104,11 @@ static void tegra_drm_context_free(struct tegra_drm_context *context) static void tegra_drm_lastclose(struct drm_device *drm) { +#ifdef CONFIG_TEGRA_DRM_FBDEV struct tegra_drm *tegra = drm->dev_private; tegra_fbdev_restore_mode(tegra->fbdev); +#endif } static struct host1x_bo * diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index ddaa937836de..6b293c88a8ca 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -27,10 +27,12 @@ struct tegra_fb { unsigned int num_planes; }; +#ifdef CONFIG_DRM_TEGRA_FBDEV struct tegra_fbdev { struct drm_fb_helper base; struct tegra_fb *fb; }; +#endif struct tegra_drm { struct drm_device *drm; @@ -38,7 +40,9 @@ struct tegra_drm { struct mutex clients_lock; struct list_head clients; +#ifdef CONFIG_DRM_TEGRA_FBDEV struct tegra_fbdev *fbdev; +#endif }; struct tegra_drm_client; @@ -265,7 +269,9 @@ bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer); bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer); extern int tegra_drm_fb_init(struct drm_device *drm); extern void tegra_drm_fb_exit(struct drm_device *drm); +#ifdef CONFIG_DRM_TEGRA_FBDEV extern void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev); +#endif extern struct platform_driver tegra_dc_driver; extern struct platform_driver tegra_dsi_driver; diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index a3835e7de184..bd4bf210f469 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -18,10 +18,12 @@ static inline struct tegra_fb *to_tegra_fb(struct drm_framebuffer *fb) return container_of(fb, struct tegra_fb, base); } +#ifdef CONFIG_DRM_TEGRA_FBDEV static inline struct tegra_fbdev *to_tegra_fbdev(struct drm_fb_helper *helper) { return container_of(helper, struct tegra_fbdev, base); } +#endif struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer, unsigned int index) @@ -172,6 +174,7 @@ unreference: return ERR_PTR(err); } +#ifdef CONFIG_DRM_TEGRA_FBDEV static struct fb_ops tegra_fb_ops = { .owner = THIS_MODULE, .fb_fillrect = sys_fillrect, @@ -339,6 +342,15 @@ static void tegra_fbdev_free(struct tegra_fbdev *fbdev) kfree(fbdev); } +void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev) +{ + if (fbdev) { + drm_modeset_lock_all(fbdev->base.dev); + drm_fb_helper_restore_fbdev_mode(&fbdev->base); + drm_modeset_unlock_all(fbdev->base.dev); + } +} + static void tegra_fb_output_poll_changed(struct drm_device *drm) { struct tegra_drm *tegra = drm->dev_private; @@ -346,16 +358,20 @@ static void tegra_fb_output_poll_changed(struct drm_device *drm) if (tegra->fbdev) drm_fb_helper_hotplug_event(&tegra->fbdev->base); } +#endif static const struct drm_mode_config_funcs tegra_drm_mode_funcs = { .fb_create = tegra_fb_create, +#ifdef CONFIG_DRM_TEGRA_FBDEV .output_poll_changed = tegra_fb_output_poll_changed, +#endif }; int tegra_drm_fb_init(struct drm_device *drm) { +#ifdef CONFIG_DRM_TEGRA_FBDEV struct tegra_drm *tegra = drm->dev_private; - struct tegra_fbdev *fbdev; +#endif drm->mode_config.min_width = 0; drm->mode_config.min_height = 0; @@ -365,28 +381,21 @@ int tegra_drm_fb_init(struct drm_device *drm) drm->mode_config.funcs = &tegra_drm_mode_funcs; - fbdev = tegra_fbdev_create(drm, 32, drm->mode_config.num_crtc, - drm->mode_config.num_connector); - if (IS_ERR(fbdev)) - return PTR_ERR(fbdev); - - tegra->fbdev = fbdev; +#ifdef CONFIG_DRM_TEGRA_FBDEV + tegra->fbdev = tegra_fbdev_create(drm, 32, drm->mode_config.num_crtc, + drm->mode_config.num_connector); + if (IS_ERR(tegra->fbdev)) + return PTR_ERR(tegra->fbdev); +#endif return 0; } void tegra_drm_fb_exit(struct drm_device *drm) { +#ifdef CONFIG_DRM_TEGRA_FBDEV struct tegra_drm *tegra = drm->dev_private; tegra_fbdev_free(tegra->fbdev); -} - -void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev) -{ - if (fbdev) { - drm_modeset_lock_all(fbdev->base.dev); - drm_fb_helper_restore_fbdev_mode(&fbdev->base); - drm_modeset_unlock_all(fbdev->base.dev); - } +#endif } -- 2.20.1