drm/rockchip: dw-mipi-dsi: use specific poll helper
[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / rockchip / rockchip_drm_fb.c
index f1631e3dd3d9602a0d725b5d30e18d5d7d0bb4aa..56e29bff7af0526a01ee93679f034974217eca50 100644 (file)
 #include <drm/drm_atomic.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_crtc_helper.h>
+#include <linux/memblock.h>
+#include <linux/iommu.h>
 
 #include "rockchip_drm_drv.h"
 #include "rockchip_drm_gem.h"
+#include "rockchip_drm_backlight.h"
 
 #define to_rockchip_fb(x) container_of(x, struct rockchip_drm_fb, fb)
 
 struct rockchip_drm_fb {
        struct drm_framebuffer fb;
+       dma_addr_t dma_addr[ROCKCHIP_MAX_FB_BUFFER];
        struct drm_gem_object *obj[ROCKCHIP_MAX_FB_BUFFER];
+       struct rockchip_logo *logo;
 };
 
-struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb,
-                                              unsigned int plane)
+bool rockchip_fb_is_logo(struct drm_framebuffer *fb)
 {
        struct rockchip_drm_fb *rk_fb = to_rockchip_fb(fb);
 
-       if (plane >= ROCKCHIP_MAX_FB_BUFFER)
-               return NULL;
+       return rk_fb && rk_fb->logo;
+}
+
+dma_addr_t rockchip_fb_get_dma_addr(struct drm_framebuffer *fb,
+                                   unsigned int plane)
+{
+       struct rockchip_drm_fb *rk_fb = to_rockchip_fb(fb);
+
+       if (WARN_ON(plane >= ROCKCHIP_MAX_FB_BUFFER))
+               return 0;
 
-       return rk_fb->obj[plane];
+       return rk_fb->dma_addr[plane];
 }
 
 static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
@@ -52,6 +64,13 @@ static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
                        drm_gem_object_unreference_unlocked(obj);
        }
 
+#ifndef MODULE
+       if (rockchip_fb->logo)
+               rockchip_free_loader_memory(fb->dev);
+#else
+       WARN_ON(rockchip_fb->logo);
+#endif
+
        drm_framebuffer_cleanup(fb);
        kfree(rockchip_fb);
 }
@@ -71,12 +90,14 @@ static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
        .create_handle  = rockchip_drm_fb_create_handle,
 };
 
-static struct rockchip_drm_fb *
+struct drm_framebuffer *
 rockchip_fb_alloc(struct drm_device *dev, struct drm_mode_fb_cmd2 *mode_cmd,
-                 struct drm_gem_object **obj, unsigned int num_planes)
+                 struct drm_gem_object **obj, struct rockchip_logo *logo,
+                 unsigned int num_planes)
 {
        struct rockchip_drm_fb *rockchip_fb;
-       int ret;
+       struct rockchip_gem_object *rk_obj;
+       int ret = 0;
        int i;
 
        rockchip_fb = kzalloc(sizeof(*rockchip_fb), GFP_KERNEL);
@@ -85,26 +106,48 @@ rockchip_fb_alloc(struct drm_device *dev, struct drm_mode_fb_cmd2 *mode_cmd,
 
        drm_helper_mode_fill_fb_struct(&rockchip_fb->fb, mode_cmd);
 
-       for (i = 0; i < num_planes; i++)
-               rockchip_fb->obj[i] = obj[i];
-
        ret = drm_framebuffer_init(dev, &rockchip_fb->fb,
                                   &rockchip_drm_fb_funcs);
        if (ret) {
                dev_err(dev->dev, "Failed to initialize framebuffer: %d\n",
                        ret);
-               kfree(rockchip_fb);
-               return ERR_PTR(ret);
+               goto err_free_fb;
+       }
+
+       if (obj) {
+               for (i = 0; i < num_planes; i++)
+                       rockchip_fb->obj[i] = obj[i];
+
+               for (i = 0; i < num_planes; i++) {
+                       rk_obj = to_rockchip_obj(obj[i]);
+                       rockchip_fb->dma_addr[i] = rk_obj->dma_addr;
+               }
+#ifndef MODULE
+       } else if (logo) {
+               rockchip_fb->dma_addr[0] = logo->dma_addr;
+               rockchip_fb->logo = logo;
+               logo->count++;
+#endif
+       } else {
+               ret = -EINVAL;
+               dev_err(dev->dev, "Failed to find available buffer\n");
+               goto err_deinit_drm_fb;
        }
 
-       return rockchip_fb;
+       return &rockchip_fb->fb;
+
+err_deinit_drm_fb:
+       drm_framebuffer_cleanup(&rockchip_fb->fb);
+err_free_fb:
+       kfree(rockchip_fb);
+       return ERR_PTR(ret);
 }
 
 static struct drm_framebuffer *
 rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
                        struct drm_mode_fb_cmd2 *mode_cmd)
 {
-       struct rockchip_drm_fb *rockchip_fb;
+       struct drm_framebuffer *fb;
        struct drm_gem_object *objs[ROCKCHIP_MAX_FB_BUFFER];
        struct drm_gem_object *obj;
        unsigned int hsub;
@@ -122,6 +165,8 @@ rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
                unsigned int width = mode_cmd->width / (i ? hsub : 1);
                unsigned int height = mode_cmd->height / (i ? vsub : 1);
                unsigned int min_size;
+               unsigned int bpp =
+                       drm_format_plane_bpp(mode_cmd->pixel_format, i);
 
                obj = drm_gem_object_lookup(dev, file_priv,
                                            mode_cmd->handles[i]);
@@ -132,9 +177,7 @@ rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
                }
 
                min_size = (height - 1) * mode_cmd->pitches[i] +
-                       mode_cmd->offsets[i] +
-                       width * drm_format_plane_cpp(mode_cmd->pixel_format, i);
-
+                       mode_cmd->offsets[i] + roundup(width * bpp, 8) / 8;
                if (obj->size < min_size) {
                        drm_gem_object_unreference_unlocked(obj);
                        ret = -EINVAL;
@@ -143,13 +186,13 @@ rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
                objs[i] = obj;
        }
 
-       rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, objs, i);
-       if (IS_ERR(rockchip_fb)) {
-               ret = PTR_ERR(rockchip_fb);
+       fb = rockchip_fb_alloc(dev, mode_cmd, objs, NULL, i);
+       if (IS_ERR(fb)) {
+               ret = PTR_ERR(fb);
                goto err_gem_object_unreference;
        }
 
-       return &rockchip_fb->fb;
+       return fb;
 
 err_gem_object_unreference:
        for (i--; i >= 0; i--)
@@ -160,74 +203,12 @@ err_gem_object_unreference:
 static void rockchip_drm_output_poll_changed(struct drm_device *dev)
 {
        struct rockchip_drm_private *private = dev->dev_private;
-       struct drm_fb_helper *fb_helper = &private->fbdev_helper;
+       struct drm_fb_helper *fb_helper = private->fbdev_helper;
 
        if (fb_helper)
                drm_fb_helper_hotplug_event(fb_helper);
 }
 
-static void rockchip_crtc_wait_for_update(struct drm_crtc *crtc)
-{
-       struct rockchip_drm_private *priv = crtc->dev->dev_private;
-       int pipe = drm_crtc_index(crtc);
-       const struct rockchip_crtc_funcs *crtc_funcs = priv->crtc_funcs[pipe];
-
-       if (crtc_funcs && crtc_funcs->wait_for_update)
-               crtc_funcs->wait_for_update(crtc);
-}
-
-/*
- * We can't use drm_atomic_helper_wait_for_vblanks() because rk3288 and rk3066
- * have hardware counters for neither vblanks nor scanlines, which results in
- * a race where:
- *                             | <-- HW vsync irq and reg take effect
- *            plane_commit --> |
- *     get_vblank and wait --> |
- *                             | <-- handle_vblank, vblank->count + 1
- *              cleanup_fb --> |
- *             iommu crash --> |
- *                             | <-- HW vsync irq and reg take effect
- *
- * This function is equivalent but uses rockchip_crtc_wait_for_update() instead
- * of waiting for vblank_count to change.
- */
-static void
-rockchip_atomic_wait_for_complete(struct drm_device *dev, struct drm_atomic_state *old_state)
-{
-       struct drm_crtc_state *old_crtc_state;
-       struct drm_crtc *crtc;
-       int i, ret;
-
-       for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
-               /* No one cares about the old state, so abuse it for tracking
-                * and store whether we hold a vblank reference (and should do a
-                * vblank wait) in the ->enable boolean.
-                */
-               old_crtc_state->enable = false;
-
-               if (!crtc->state->active)
-                       continue;
-
-               if (!drm_atomic_helper_framebuffer_changed(dev,
-                               old_state, crtc))
-                       continue;
-
-               ret = drm_crtc_vblank_get(crtc);
-               if (ret != 0)
-                       continue;
-
-               old_crtc_state->enable = true;
-       }
-
-       for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
-               if (!old_crtc_state->enable)
-                       continue;
-
-               rockchip_crtc_wait_for_update(crtc);
-               drm_crtc_vblank_put(crtc);
-       }
-}
-
 static void
 rockchip_atomic_commit_complete(struct rockchip_atomic_commit *commit)
 {
@@ -257,9 +238,11 @@ rockchip_atomic_commit_complete(struct rockchip_atomic_commit *commit)
 
        drm_atomic_helper_commit_modeset_enables(dev, state);
 
+       rockchip_drm_backlight_update(dev);
+
        drm_atomic_helper_commit_planes(dev, state, true);
 
-       rockchip_atomic_wait_for_complete(dev, state);
+       drm_atomic_helper_wait_for_vblanks(dev, state);
 
        drm_atomic_helper_cleanup_planes(dev, state);
 
@@ -317,13 +300,13 @@ rockchip_drm_framebuffer_init(struct drm_device *dev,
                              struct drm_mode_fb_cmd2 *mode_cmd,
                              struct drm_gem_object *obj)
 {
-       struct rockchip_drm_fb *rockchip_fb;
+       struct drm_framebuffer *fb;
 
-       rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
-       if (IS_ERR(rockchip_fb))
+       fb = rockchip_fb_alloc(dev, mode_cmd, &obj, NULL, 1);
+       if (IS_ERR(fb))
                return NULL;
 
-       return &rockchip_fb->fb;
+       return fb;
 }
 
 void rockchip_drm_mode_config_init(struct drm_device *dev)
@@ -336,8 +319,8 @@ void rockchip_drm_mode_config_init(struct drm_device *dev)
         * this value would be used to check framebuffer size limitation
         * at drm_mode_addfb().
         */
-       dev->mode_config.max_width = 4096;
-       dev->mode_config.max_height = 4096;
+       dev->mode_config.max_width = 8192;
+       dev->mode_config.max_height = 8192;
 
        dev->mode_config.funcs = &rockchip_drm_mode_config_funcs;
 }