These changes are the raw update to linux-4.4.6-rt14. Kernel sources
[kvmfornfv.git] / kernel / drivers / gpu / drm / exynos / exynos_drm_fbdev.c
index e71e331..f6118ba 100644 (file)
@@ -21,7 +21,6 @@
 #include "exynos_drm_drv.h"
 #include "exynos_drm_fb.h"
 #include "exynos_drm_fbdev.h"
-#include "exynos_drm_gem.h"
 #include "exynos_drm_iommu.h"
 
 #define MAX_CONNECTOR          4
@@ -31,8 +30,8 @@
                                drm_fb_helper)
 
 struct exynos_drm_fbdev {
-       struct drm_fb_helper            drm_fb_helper;
-       struct exynos_drm_gem_obj       *exynos_gem_obj;
+       struct drm_fb_helper    drm_fb_helper;
+       struct exynos_drm_gem   *exynos_gem;
 };
 
 static int exynos_drm_fb_mmap(struct fb_info *info,
@@ -40,8 +39,7 @@ static int exynos_drm_fb_mmap(struct fb_info *info,
 {
        struct drm_fb_helper *helper = info->par;
        struct exynos_drm_fbdev *exynos_fbd = to_exynos_fbdev(helper);
-       struct exynos_drm_gem_obj *exynos_gem_obj = exynos_fbd->exynos_gem_obj;
-       struct exynos_drm_gem_buf *buffer = exynos_gem_obj->buffer;
+       struct exynos_drm_gem *exynos_gem = exynos_fbd->exynos_gem;
        unsigned long vm_size;
        int ret;
 
@@ -49,11 +47,12 @@ static int exynos_drm_fb_mmap(struct fb_info *info,
 
        vm_size = vma->vm_end - vma->vm_start;
 
-       if (vm_size > buffer->size)
+       if (vm_size > exynos_gem->size)
                return -EINVAL;
 
-       ret = dma_mmap_attrs(helper->dev->dev, vma, buffer->pages,
-               buffer->dma_addr, buffer->size, &buffer->dma_attrs);
+       ret = dma_mmap_attrs(helper->dev->dev, vma, exynos_gem->pages,
+                            exynos_gem->dma_addr, exynos_gem->size,
+                            &exynos_gem->dma_attrs);
        if (ret < 0) {
                DRM_ERROR("failed to mmap.\n");
                return ret;
@@ -65,9 +64,9 @@ static int exynos_drm_fb_mmap(struct fb_info *info,
 static struct fb_ops exynos_drm_fb_ops = {
        .owner          = THIS_MODULE,
        .fb_mmap        = exynos_drm_fb_mmap,
-       .fb_fillrect    = cfb_fillrect,
-       .fb_copyarea    = cfb_copyarea,
-       .fb_imageblit   = cfb_imageblit,
+       .fb_fillrect    = drm_fb_helper_cfb_fillrect,
+       .fb_copyarea    = drm_fb_helper_cfb_copyarea,
+       .fb_imageblit   = drm_fb_helper_cfb_imageblit,
        .fb_check_var   = drm_fb_helper_check_var,
        .fb_set_par     = drm_fb_helper_set_par,
        .fb_blank       = drm_fb_helper_blank,
@@ -76,42 +75,42 @@ static struct fb_ops exynos_drm_fb_ops = {
 };
 
 static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
-                                    struct drm_fb_helper_surface_size *sizes,
-                                    struct drm_framebuffer *fb)
+                                  struct drm_fb_helper_surface_size *sizes,
+                                  struct exynos_drm_gem *exynos_gem)
 {
-       struct fb_info *fbi = helper->fbdev;
-       struct exynos_drm_gem_buf *buffer;
+       struct fb_info *fbi;
+       struct drm_framebuffer *fb = helper->fb;
        unsigned int size = fb->width * fb->height * (fb->bits_per_pixel >> 3);
        unsigned int nr_pages;
        unsigned long offset;
 
+       fbi = drm_fb_helper_alloc_fbi(helper);
+       if (IS_ERR(fbi)) {
+               DRM_ERROR("failed to allocate fb info.\n");
+               return PTR_ERR(fbi);
+       }
+
+       fbi->par = helper;
+       fbi->flags = FBINFO_FLAG_DEFAULT;
+       fbi->fbops = &exynos_drm_fb_ops;
+
        drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->depth);
        drm_fb_helper_fill_var(fbi, helper, sizes->fb_width, sizes->fb_height);
 
-       /* RGB formats use only one buffer */
-       buffer = exynos_drm_fb_buffer(fb, 0);
-       if (!buffer) {
-               DRM_DEBUG_KMS("buffer is null.\n");
-               return -EFAULT;
-       }
-
-       nr_pages = buffer->size >> PAGE_SHIFT;
+       nr_pages = exynos_gem->size >> PAGE_SHIFT;
 
-       buffer->kvaddr = (void __iomem *) vmap(buffer->pages,
-                       nr_pages, VM_MAP,
-                       pgprot_writecombine(PAGE_KERNEL));
-       if (!buffer->kvaddr) {
+       exynos_gem->kvaddr = (void __iomem *) vmap(exynos_gem->pages, nr_pages,
+                               VM_MAP, pgprot_writecombine(PAGE_KERNEL));
+       if (!exynos_gem->kvaddr) {
                DRM_ERROR("failed to map pages to kernel space.\n");
+               drm_fb_helper_release_fbi(helper);
                return -EIO;
        }
 
-       /* buffer count to framebuffer always is 1 at booting time. */
-       exynos_drm_fb_set_buf_cnt(fb, 1);
-
        offset = fbi->var.xoffset * (fb->bits_per_pixel >> 3);
        offset += fbi->var.yoffset * fb->pitches[0];
 
-       fbi->screen_base = buffer->kvaddr + offset;
+       fbi->screen_base = exynos_gem->kvaddr + offset;
        fbi->screen_size = size;
        fbi->fix.smem_len = size;
 
@@ -122,9 +121,8 @@ static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
                                    struct drm_fb_helper_surface_size *sizes)
 {
        struct exynos_drm_fbdev *exynos_fbdev = to_exynos_fbdev(helper);
-       struct exynos_drm_gem_obj *exynos_gem_obj;
+       struct exynos_drm_gem *exynos_gem;
        struct drm_device *dev = helper->dev;
-       struct fb_info *fbi;
        struct drm_mode_fb_cmd2 mode_cmd = { 0 };
        struct platform_device *pdev = dev->platformdev;
        unsigned long size;
@@ -142,69 +140,46 @@ static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
 
        mutex_lock(&dev->struct_mutex);
 
-       fbi = framebuffer_alloc(0, &pdev->dev);
-       if (!fbi) {
-               DRM_ERROR("failed to allocate fb info.\n");
-               ret = -ENOMEM;
-               goto out;
-       }
-
        size = mode_cmd.pitches[0] * mode_cmd.height;
 
-       exynos_gem_obj = exynos_drm_gem_create(dev, EXYNOS_BO_CONTIG, size);
+       exynos_gem = exynos_drm_gem_create(dev, EXYNOS_BO_CONTIG, size);
        /*
         * If physically contiguous memory allocation fails and if IOMMU is
         * supported then try to get buffer from non physically contiguous
         * memory area.
         */
-       if (IS_ERR(exynos_gem_obj) && is_drm_iommu_supported(dev)) {
+       if (IS_ERR(exynos_gem) && is_drm_iommu_supported(dev)) {
                dev_warn(&pdev->dev, "contiguous FB allocation failed, falling back to non-contiguous\n");
-               exynos_gem_obj = exynos_drm_gem_create(dev, EXYNOS_BO_NONCONTIG,
-                                                       size);
+               exynos_gem = exynos_drm_gem_create(dev, EXYNOS_BO_NONCONTIG,
+                                                  size);
        }
 
-       if (IS_ERR(exynos_gem_obj)) {
-               ret = PTR_ERR(exynos_gem_obj);
-               goto err_release_framebuffer;
+       if (IS_ERR(exynos_gem)) {
+               ret = PTR_ERR(exynos_gem);
+               goto out;
        }
 
-       exynos_fbdev->exynos_gem_obj = exynos_gem_obj;
+       exynos_fbdev->exynos_gem = exynos_gem;
 
-       helper->fb = exynos_drm_framebuffer_init(dev, &mode_cmd,
-                       &exynos_gem_obj->base);
+       helper->fb =
+               exynos_drm_framebuffer_init(dev, &mode_cmd, &exynos_gem, 1);
        if (IS_ERR(helper->fb)) {
                DRM_ERROR("failed to create drm framebuffer.\n");
                ret = PTR_ERR(helper->fb);
                goto err_destroy_gem;
        }
 
-       helper->fbdev = fbi;
-
-       fbi->par = helper;
-       fbi->flags = FBINFO_FLAG_DEFAULT;
-       fbi->fbops = &exynos_drm_fb_ops;
-
-       ret = fb_alloc_cmap(&fbi->cmap, 256, 0);
-       if (ret) {
-               DRM_ERROR("failed to allocate cmap.\n");
-               goto err_destroy_framebuffer;
-       }
-
-       ret = exynos_drm_fbdev_update(helper, sizes, helper->fb);
+       ret = exynos_drm_fbdev_update(helper, sizes, exynos_gem);
        if (ret < 0)
-               goto err_dealloc_cmap;
+               goto err_destroy_framebuffer;
 
        mutex_unlock(&dev->struct_mutex);
        return ret;
 
-err_dealloc_cmap:
-       fb_dealloc_cmap(&fbi->cmap);
 err_destroy_framebuffer:
        drm_framebuffer_cleanup(helper->fb);
 err_destroy_gem:
-       exynos_drm_gem_destroy(exynos_gem_obj);
-err_release_framebuffer:
-       framebuffer_release(fbi);
+       exynos_drm_gem_destroy(exynos_gem);
 
 /*
  * if failed, all resources allocated above would be released by
@@ -275,9 +250,6 @@ int exynos_drm_fbdev_init(struct drm_device *dev)
 
        }
 
-       /* disable all the possible outputs/crtcs before entering KMS mode */
-       drm_helper_disable_unused_functions(dev);
-
        ret = drm_fb_helper_initial_config(helper, PREFERRED_BPP);
        if (ret < 0) {
                DRM_ERROR("failed to set up hw configuration.\n");
@@ -300,11 +272,11 @@ static void exynos_drm_fbdev_destroy(struct drm_device *dev,
                                      struct drm_fb_helper *fb_helper)
 {
        struct exynos_drm_fbdev *exynos_fbd = to_exynos_fbdev(fb_helper);
-       struct exynos_drm_gem_obj *exynos_gem_obj = exynos_fbd->exynos_gem_obj;
+       struct exynos_drm_gem *exynos_gem = exynos_fbd->exynos_gem;
        struct drm_framebuffer *fb;
 
-       if (exynos_gem_obj->buffer->kvaddr)
-               vunmap(exynos_gem_obj->buffer->kvaddr);
+       if (exynos_gem->kvaddr)
+               vunmap(exynos_gem->kvaddr);
 
        /* release drm framebuffer and real buffer */
        if (fb_helper->fb && fb_helper->fb->funcs) {
@@ -315,21 +287,8 @@ static void exynos_drm_fbdev_destroy(struct drm_device *dev,
                }
        }
 
-       /* release linux framebuffer */
-       if (fb_helper->fbdev) {
-               struct fb_info *info;
-               int ret;
-
-               info = fb_helper->fbdev;
-               ret = unregister_framebuffer(info);
-               if (ret < 0)
-                       DRM_DEBUG_KMS("failed unregister_framebuffer()\n");
-
-               if (info->cmap.len)
-                       fb_dealloc_cmap(&info->cmap);
-
-               framebuffer_release(info);
-       }
+       drm_fb_helper_unregister_fbi(fb_helper);
+       drm_fb_helper_release_fbi(fb_helper);
 
        drm_fb_helper_fini(fb_helper);
 }