[PATCH] Update fbdev fb_fix_screeninfo

[James Simmons]

If you change the color depth via fbset or some other framebuffer aware 
userland application struct fb_fix_screeninfo is not updated to this new
information. This patch fixes this issue. Also the function is changed to
just pass in struct drm_framebuffer so in the future we could use more 
fields. I'm hoping some day fix->smem* could be set here :-)

Signed-off-by: James Simmons <jsimmons at infradead.org>

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 5c4f9b9..0307d60 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -607,6 +607,25 @@ void drm_fb_helper_fini(struct drm_fb_helper *fb_helper)
 }
 EXPORT_SYMBOL(drm_fb_helper_fini);
 
+void drm_fb_helper_fill_fix(struct fb_info *info, struct drm_framebuffer *fb)
+{
+	info->fix.type = FB_TYPE_PACKED_PIXELS;
+	info->fix.visual = fb->depth == 8 ? FB_VISUAL_PSEUDOCOLOR :
+		FB_VISUAL_TRUECOLOR;
+	info->fix.mmio_start = 0;
+	info->fix.mmio_len = 0;
+	info->fix.type_aux = 0;
+	info->fix.xpanstep = 1; /* doing it in hw */
+	info->fix.ypanstep = 1; /* doing it in hw */
+	info->fix.ywrapstep = 0;
+	info->fix.accel = FB_ACCEL_NONE;
+	info->fix.type_aux = 0;
+
+	info->fix.line_length = fb->pitch;
+	return;
+}
+EXPORT_SYMBOL(drm_fb_helper_fill_fix);
+
 static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
 		     u16 blue, u16 regno, struct fb_info *info)
 {
@@ -816,6 +835,7 @@ int drm_fb_helper_set_par(struct fb_info *info)
 			mutex_unlock(&dev->mode_config.mutex);
 			return ret;
 		}
+		drm_fb_helper_fill_fix(info, fb_helper->fb);
 	}
 	mutex_unlock(&dev->mode_config.mutex);
 
@@ -953,6 +973,7 @@ int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
 
 	if (new_fb) {
 		info->var.pixclock = 0;
+		drm_fb_helper_fill_fix(info, fb_helper->fb);
 		if (register_framebuffer(info) < 0) {
 			return -EINVAL;
 		}
@@ -979,26 +1000,6 @@ int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
 }
 EXPORT_SYMBOL(drm_fb_helper_single_fb_probe);
 
-void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
-			    uint32_t depth)
-{
-	info->fix.type = FB_TYPE_PACKED_PIXELS;
-	info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR :
-		FB_VISUAL_TRUECOLOR;
-	info->fix.mmio_start = 0;
-	info->fix.mmio_len = 0;
-	info->fix.type_aux = 0;
-	info->fix.xpanstep = 1; /* doing it in hw */
-	info->fix.ypanstep = 1; /* doing it in hw */
-	info->fix.ywrapstep = 0;
-	info->fix.accel = FB_ACCEL_NONE;
-	info->fix.type_aux = 0;
-
-	info->fix.line_length = pitch;
-	return;
-}
-EXPORT_SYMBOL(drm_fb_helper_fill_fix);
-
 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
 			    uint32_t fb_width, uint32_t fb_height)
 {
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index 67738f3..701e830 100644
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -150,7 +150,6 @@ static int intelfb_create(struct intel_fbdev *ifbdev,
 
 //	memset(info->screen_base, 0, size);
 
-	drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
 	drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
 
 	info->pixmap.size = 64*1024;
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index 6d56a54..a26d047 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -359,7 +359,6 @@ nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
 	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
 	info->screen_size = size;
 
-	drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
 	drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
 
 	/* Set aperture base/size for vesafb takeover */
diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index f7b4762..80c1c7a 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -225,8 +225,6 @@ static int radeonfb_create(struct radeon_fbdev *rfbdev,
 
 	strcpy(info->fix.id, "radeondrmfb");
 
-	drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
-
 	info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
 	info->fbops = &radeonfb_ops;
 
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index f22e7fe..aac27bd 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -121,9 +121,6 @@ int drm_fb_helper_setcolreg(unsigned regno,
 void drm_fb_helper_restore(void);
 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
 			    uint32_t fb_width, uint32_t fb_height);
-void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
-			    uint32_t depth);
-
 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
 
 bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);

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