From 5db08a7e487a8a8e4e667b63fa37fec14f185e64 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Mon, 12 Feb 2018 09:52:57 +0200 Subject: drm/omap: fbdev: use 'screen_buffer' field Fix sparse warning: drivers/gpu/drm/omapdrm/omap_fbdev.c:191:26: warning: incorrect type in assignment (different address spaces) drivers/gpu/drm/omapdrm/omap_fbdev.c:191:26: expected char [noderef] *screen_base drivers/gpu/drm/omapdrm/omap_fbdev.c:191:26: got void * Signed-off-by: Tomi Valkeinen --- drivers/gpu/drm/omapdrm/omap_fbdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (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 fb309d19ca1b..211ab0b865c9 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -188,7 +188,7 @@ static int omap_fbdev_create(struct drm_fb_helper *helper, dev->mode_config.fb_base = dma_addr; - fbi->screen_base = omap_gem_vaddr(fbdev->bo); + fbi->screen_buffer = omap_gem_vaddr(fbdev->bo); fbi->screen_size = fbdev->bo->size; fbi->fix.smem_start = dma_addr; fbi->fix.smem_len = fbdev->bo->size; -- cgit From f9b34a0fa4e25d9c0b72f124680c37c0c38f9934 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Mon, 12 Feb 2018 09:55:45 +0200 Subject: drm/omap: fbdev: avoid double initializer entry Fix sparse warning: drivers/gpu/drm/omapdrm/omap_fbdev.c:83:9: warning: Initializer entry defined twice drivers/gpu/drm/omapdrm/omap_fbdev.c:91:10: also defined here Signed-off-by: Tomi Valkeinen --- drivers/gpu/drm/omapdrm/omap_fbdev.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 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 211ab0b865c9..1ace63e2ff22 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -80,15 +80,21 @@ fallback: static struct fb_ops omap_fb_ops = { .owner = THIS_MODULE, - DRM_FB_HELPER_DEFAULT_OPS, + + .fb_check_var = drm_fb_helper_check_var, + .fb_set_par = drm_fb_helper_set_par, + .fb_setcmap = drm_fb_helper_setcmap, + .fb_blank = drm_fb_helper_blank, + .fb_pan_display = omap_fbdev_pan_display, + .fb_debug_enter = drm_fb_helper_debug_enter, + .fb_debug_leave = drm_fb_helper_debug_leave, + .fb_ioctl = drm_fb_helper_ioctl, .fb_read = drm_fb_helper_sys_read, .fb_write = drm_fb_helper_sys_write, .fb_fillrect = drm_fb_helper_sys_fillrect, .fb_copyarea = drm_fb_helper_sys_copyarea, .fb_imageblit = drm_fb_helper_sys_imageblit, - - .fb_pan_display = omap_fbdev_pan_display, }; static int omap_fbdev_create(struct drm_fb_helper *helper, -- cgit From e6204a58b9e9ad01ab9c6d4b8b2b8b9c4e38bbba Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Fri, 9 Feb 2018 09:30:44 +0200 Subject: drm/omap: fix omap_fbdev_free() when omap_fbdev_create() wasn't called If we have no crtcs/connectors, fbdev init goes fine, but omap_fbdev_create() is never called. This means that omap_fbdev->bo is NULL and omap_fbdev_free() crashes. Add a check to omap_fbdev_free() to handle the NULL case. Signed-off-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart --- drivers/gpu/drm/omapdrm/omap_fbdev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (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 1ace63e2ff22..632ebcf2165f 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -303,7 +303,8 @@ void omap_fbdev_free(struct drm_device *dev) fbdev = to_omap_fbdev(priv->fbdev); /* unpin the GEM object pinned in omap_fbdev_create() */ - omap_gem_unpin(fbdev->bo); + if (fbdev->bo) + omap_gem_unpin(fbdev->bo); /* this will free the backing object */ if (fbdev->fb) -- cgit From efd1f06be004a6a384f0482ef76c12bc202e1b8e Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Fri, 9 Feb 2018 09:36:23 +0200 Subject: drm/omap: cleanup fbdev init/free omap_fbdev_init() and omap_fbdev_free() use priv->fbdev directly. However, omap_fbdev_init() returns the fbdev, and omap_drv.c also assigns the return value to priv->fbdev. This is slightly confusing. Clean this up by removing the omap_fbdev_init() return value, as we don't care whether fbdev init succeeded or not. Also change omap_drv.c to call omap_fbdev_free() always, and omap_fbdev_free() does the check if fbdev was initialized. While at it, rename omap_fbdev_free() to omap_fbdev_fini() to better match the "init" counterpart. Signed-off-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart --- drivers/gpu/drm/omapdrm/omap_drv.c | 9 ++++----- drivers/gpu/drm/omapdrm/omap_fbdev.c | 18 ++++++++---------- drivers/gpu/drm/omapdrm/omap_fbdev.h | 9 ++++----- 3 files changed, 16 insertions(+), 20 deletions(-) (limited to 'drivers/gpu/drm/omapdrm/omap_fbdev.c') diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index 65a567dcf3ab..4f48b908bdc6 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -570,7 +570,7 @@ static int omapdrm_init(struct omap_drm_private *priv, struct device *dev) for (i = 0; i < priv->num_crtcs; i++) drm_crtc_vblank_off(priv->crtcs[i]); - priv->fbdev = omap_fbdev_init(ddev); + omap_fbdev_init(ddev); drm_kms_helper_poll_init(ddev); omap_modeset_enable_external_hpd(); @@ -588,8 +588,8 @@ static int omapdrm_init(struct omap_drm_private *priv, struct device *dev) err_cleanup_helpers: omap_modeset_disable_external_hpd(); drm_kms_helper_poll_fini(ddev); - if (priv->fbdev) - omap_fbdev_free(ddev); + + omap_fbdev_fini(ddev); err_cleanup_modeset: drm_mode_config_cleanup(ddev); omap_drm_irq_uninstall(ddev); @@ -615,8 +615,7 @@ static void omapdrm_cleanup(struct omap_drm_private *priv) omap_modeset_disable_external_hpd(); drm_kms_helper_poll_fini(ddev); - if (priv->fbdev) - omap_fbdev_free(ddev); + omap_fbdev_fini(ddev); drm_atomic_helper_shutdown(ddev); diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c index 632ebcf2165f..be94480326d7 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -242,7 +242,7 @@ static struct drm_fb_helper *get_fb(struct fb_info *fbi) } /* initialize fbdev helper */ -struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev) +void omap_fbdev_init(struct drm_device *dev) { struct omap_drm_private *priv = dev->dev_private; struct omap_fbdev *fbdev = NULL; @@ -260,10 +260,8 @@ struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev) drm_fb_helper_prepare(dev, helper, &omap_fb_helper_funcs); ret = drm_fb_helper_init(dev, helper, priv->num_connectors); - if (ret) { - dev_err(dev->dev, "could not init fbdev: ret=%d\n", ret); + if (ret) goto fail; - } ret = drm_fb_helper_single_add_all_connectors(helper); if (ret) @@ -275,7 +273,7 @@ struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev) priv->fbdev = helper; - return helper; + return; fini: drm_fb_helper_fini(helper); @@ -283,12 +281,9 @@ fail: kfree(fbdev); dev_warn(dev->dev, "omap_fbdev_init failed\n"); - /* well, limp along without an fbdev.. maybe X11 will work? */ - - return NULL; } -void omap_fbdev_free(struct drm_device *dev) +void omap_fbdev_fini(struct drm_device *dev) { struct omap_drm_private *priv = dev->dev_private; struct drm_fb_helper *helper = priv->fbdev; @@ -296,11 +291,14 @@ void omap_fbdev_free(struct drm_device *dev) DBG(); + if (!helper) + return; + drm_fb_helper_unregister_fbi(helper); drm_fb_helper_fini(helper); - fbdev = to_omap_fbdev(priv->fbdev); + fbdev = to_omap_fbdev(helper); /* unpin the GEM object pinned in omap_fbdev_create() */ if (fbdev->bo) diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.h b/drivers/gpu/drm/omapdrm/omap_fbdev.h index 1f5ba0996a1a..7dfd843f73f1 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.h +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.h @@ -24,14 +24,13 @@ struct drm_device; struct drm_fb_helper; #ifdef CONFIG_DRM_FBDEV_EMULATION -struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev); -void omap_fbdev_free(struct drm_device *dev); +void omap_fbdev_init(struct drm_device *dev); +void omap_fbdev_fini(struct drm_device *dev); #else -static inline struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev) +static inline void omap_fbdev_init(struct drm_device *dev) { - return NULL; } -static inline void omap_fbdev_free(struct drm_device *dev) +static inline void omap_fbdev_fini(struct drm_device *dev) { } #endif -- cgit From da77772172059e609ef5135881df55e3e6c5c808 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Fri, 15 Dec 2017 16:08:31 +0200 Subject: drm/omap: Init fbdev emulation only when we have displays Do not try to init the fbdev if either num_crtcs or num_connectors is 0. In this case we do not have display so the fbdev init would fail anyways. Signed-off-by: Peter Ujfalusi Signed-off-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart --- drivers/gpu/drm/omapdrm/omap_fbdev.c | 3 +++ 1 file changed, 3 insertions(+) (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 be94480326d7..0f66c74a54b0 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -249,6 +249,9 @@ void omap_fbdev_init(struct drm_device *dev) struct drm_fb_helper *helper; int ret = 0; + if (!priv->num_crtcs || !priv->num_connectors) + return; + fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL); if (!fbdev) goto fail; -- cgit