Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

Pull drm tree changes from Dave Airlie:
 "This is the main drm pull request, I have some overlap with sound and
  arm-soc, the sound patch is acked and may conflict based on -next
  reports but should be a trivial fixup, which I'll leave to you!

  Highlights:

   - new drivers:

     MSM driver from Rob Clark

   - non-drm:

     switcheroo and hdmi audio driver support for secondary GPU
     poweroff, so drivers can use runtime PM to poweroff the GPUs.  This
     can save 5 or 6W on some optimus laptops.

   - drm core:

     combined GEM and TTM VMA manager
     per-filp mmap permission tracking
     initial rendernode support (via a runtime enable for now, until we get api stable),
     remove old proc support,
     lots of cleanups of legacy code
     hdmi vendor infoframes and 4k modes
     lots of gem/prime locking and races fixes
     async pageflip scaffolding
     drm bridge objects

   - i915:

     Haswell PC8+ support and eLLC support, HDMI 4K support, initial
     per-process VMA pieces, watermark reworks, convert to generic hdmi
     infoframes, encoder reworking, fastboot support,

   - radeon:

     CIK PM support, remove 3d blit code in favour of DMA engines,
     Berlin GPU support, HDMI audio fixes

   - nouveau:

     secondary GPU power down support for optimus laptops, lots of
     fixes, use MSI, VP3 engine support

   - exynos:

     runtime pm support for g2d, DT support, remove non-DT,

   - tda998x i2c driver:

     lots of fixes for sync issues

   - gma500:

     lots of cleanups

   - rcar:

     add LVDS support, fbdev emulation,

   - tegra:

     just minor fixes"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (684 commits)
  drm/exynos: Fix build error with exynos_drm_connector.c
  drm/exynos: Remove non-DT support in exynos_drm_fimd
  drm/exynos: Remove non-DT support in exynos_hdmi
  drm/exynos: Remove non-DT support in exynos_drm_g2d
  drm/exynos: Remove non-DT support in exynos_hdmiphy
  drm/exynos: Remove non-DT support in exynos_ddc
  drm/exynos: Make Exynos DRM drivers depend on OF
  drm/exynos: Consider fallback option to allocation fail
  drm/exynos: fimd: move platform data parsing to separate function
  drm/exynos: fimd: get signal polarities from device tree
  drm/exynos: fimd: replace struct fb_videomode with videomode
  drm/exynos: check a pixel format to a particular window layer
  drm/exynos: fix fimd pixel format setting
  drm/exynos: Add NULL pointer check
  drm/exynos: Remove redundant error messages
  drm/exynos: Add missing of.h header include
  drm/exynos: Remove redundant NULL check in exynos_drm_buf
  drm/exynos: add device tree support for rotator
  drm/exynos: Add missing includes
  drm/exynos: add runtime pm interfaces to g2d driver
  ...

3 files changed, 47 insertions, 26 deletions

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index 7418dcd986d3..d36efc13b16f 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -15,7 +15,7 @@
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <linux/kfifo.h>
+#include "drm_flip_work.h"
 
 #include "tilcdc_drv.h"
 #include "tilcdc_regs.h"
@@ -35,21 +35,18 @@ struct tilcdc_crtc {
         struct drm_framebuffer *scanout[2];
 
         /* for deferred fb unref's: */
-        DECLARE_KFIFO_PTR(unref_fifo, struct drm_framebuffer *);
-        struct work_struct work;
+        struct drm_flip_work unref_work;
 };
 #define to_tilcdc_crtc(x) container_of(x, struct tilcdc_crtc, base)
 
-static void unref_worker(struct work_struct *work)
+static void unref_worker(struct drm_flip_work *work, void *val)
 {
         struct tilcdc_crtc *tilcdc_crtc =
-                container_of(work, struct tilcdc_crtc, work);
+                container_of(work, struct tilcdc_crtc, unref_work);
         struct drm_device *dev = tilcdc_crtc->base.dev;
-        struct drm_framebuffer *fb;
 
         mutex_lock(&dev->mode_config.mutex);
-        while (kfifo_get(&tilcdc_crtc->unref_fifo, &fb))
-                drm_framebuffer_unreference(fb);
+        drm_framebuffer_unreference(val);
         mutex_unlock(&dev->mode_config.mutex);
 }
 
@@ -68,19 +65,14 @@ static void set_scanout(struct drm_crtc *crtc, int n)
         };
         struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
         struct drm_device *dev = crtc->dev;
+        struct tilcdc_drm_private *priv = dev->dev_private;
 
         pm_runtime_get_sync(dev->dev);
         tilcdc_write(dev, base_reg[n], tilcdc_crtc->start);
         tilcdc_write(dev, ceil_reg[n], tilcdc_crtc->end);
         if (tilcdc_crtc->scanout[n]) {
-                if (kfifo_put(&tilcdc_crtc->unref_fifo,
-                                (const struct drm_framebuffer **)&tilcdc_crtc->scanout[n])) {
-                        struct tilcdc_drm_private *priv = dev->dev_private;
-                        queue_work(priv->wq, &tilcdc_crtc->work);
-                } else {
-                        dev_err(dev->dev, "unref fifo full!\n");
-                        drm_framebuffer_unreference(tilcdc_crtc->scanout[n]);
-                }
+                drm_flip_work_queue(&tilcdc_crtc->unref_work, tilcdc_crtc->scanout[n]);
+                drm_flip_work_commit(&tilcdc_crtc->unref_work, priv->wq);
         }
         tilcdc_crtc->scanout[n] = crtc->fb;
         drm_framebuffer_reference(tilcdc_crtc->scanout[n]);
@@ -149,14 +141,15 @@ static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
         WARN_ON(tilcdc_crtc->dpms == DRM_MODE_DPMS_ON);
 
         drm_crtc_cleanup(crtc);
-        WARN_ON(!kfifo_is_empty(&tilcdc_crtc->unref_fifo));
-        kfifo_free(&tilcdc_crtc->unref_fifo);
+        drm_flip_work_cleanup(&tilcdc_crtc->unref_work);
+
         kfree(tilcdc_crtc);
 }
 
 static int tilcdc_crtc_page_flip(struct drm_crtc *crtc,
                 struct drm_framebuffer *fb,
-                struct drm_pending_vblank_event *event)
+                struct drm_pending_vblank_event *event,
+                uint32_t page_flip_flags)
 {
         struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
         struct drm_device *dev = crtc->dev;
@@ -379,7 +372,12 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
         else
                 tilcdc_clear(dev, LCDC_RASTER_TIMING_2_REG, LCDC_SYNC_EDGE);
 
-        if (mode->flags & DRM_MODE_FLAG_NHSYNC)
+        /*
+         * use value from adjusted_mode here as this might have been
+         * changed as part of the fixup for slave encoders to solve the
+         * issue where tilcdc timings are not VESA compliant
+         */
+        if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
                 tilcdc_set(dev, LCDC_RASTER_TIMING_2_REG, LCDC_INVERT_HSYNC);
         else
                 tilcdc_clear(dev, LCDC_RASTER_TIMING_2_REG, LCDC_INVERT_HSYNC);
@@ -666,14 +664,13 @@ struct drm_crtc *tilcdc_crtc_create(struct drm_device *dev)
         tilcdc_crtc->dpms = DRM_MODE_DPMS_OFF;
         init_waitqueue_head(&tilcdc_crtc->frame_done_wq);
 
-        ret = kfifo_alloc(&tilcdc_crtc->unref_fifo, 16, GFP_KERNEL);
+        ret = drm_flip_work_init(&tilcdc_crtc->unref_work, 16,
+                        "unref", unref_worker);
         if (ret) {
                 dev_err(dev->dev, "could not allocate unref FIFO\n");
                 goto fail;
         }
 
-        INIT_WORK(&tilcdc_crtc->work, unref_worker);
-
         ret = drm_crtc_init(dev, crtc, &tilcdc_crtc_funcs);
         if (ret < 0)
                 goto fail;
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 40b71da5a214..116da199b942 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -497,7 +497,6 @@ static const struct file_operations fops = {
 #endif
         .poll               = drm_poll,
         .read               = drm_read,
-        .fasync             = drm_fasync,
         .llseek             = no_llseek,
         .mmap               = drm_gem_cma_mmap,
 };
@@ -519,7 +518,7 @@ static struct drm_driver tilcdc_driver = {
         .gem_vm_ops         = &drm_gem_cma_vm_ops,
         .dumb_create        = drm_gem_cma_dumb_create,
         .dumb_map_offset    = drm_gem_cma_dumb_map_offset,
-        .dumb_destroy       = drm_gem_cma_dumb_destroy,
+        .dumb_destroy       = drm_gem_dumb_destroy,
 #ifdef CONFIG_DEBUG_FS
         .debugfs_init       = tilcdc_debugfs_init,
         .debugfs_cleanup    = tilcdc_debugfs_cleanup,
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave.c b/drivers/gpu/drm/tilcdc/tilcdc_slave.c
index a19f657dfa59..595068ba2d5e 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_slave.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_slave.c
@@ -72,13 +72,38 @@ static void slave_encoder_prepare(struct drm_encoder *encoder)
         tilcdc_crtc_set_panel_info(encoder->crtc, &slave_info);
 }
 
+static bool slave_encoder_fixup(struct drm_encoder *encoder,
+                const struct drm_display_mode *mode,
+                struct drm_display_mode *adjusted_mode)
+{
+        /*
+         * tilcdc does not generate VESA-complient sync but aligns
+         * VS on the second edge of HS instead of first edge.
+         * We use adjusted_mode, to fixup sync by aligning both rising
+         * edges and add HSKEW offset to let the slave encoder fix it up.
+         */
+        adjusted_mode->hskew = mode->hsync_end - mode->hsync_start;
+        adjusted_mode->flags |= DRM_MODE_FLAG_HSKEW;
+
+        if (mode->flags & DRM_MODE_FLAG_NHSYNC) {
+                adjusted_mode->flags |= DRM_MODE_FLAG_PHSYNC;
+                adjusted_mode->flags &= ~DRM_MODE_FLAG_NHSYNC;
+        } else {
+                adjusted_mode->flags |= DRM_MODE_FLAG_NHSYNC;
+                adjusted_mode->flags &= ~DRM_MODE_FLAG_PHSYNC;
+        }
+
+        return drm_i2c_encoder_mode_fixup(encoder, mode, adjusted_mode);
+}
+
+
 static const struct drm_encoder_funcs slave_encoder_funcs = {
                 .destroy        = slave_encoder_destroy,
 };
 
 static const struct drm_encoder_helper_funcs slave_encoder_helper_funcs = {
                 .dpms           = drm_i2c_encoder_dpms,
-                .mode_fixup     = drm_i2c_encoder_mode_fixup,
+                .mode_fixup     = slave_encoder_fixup,
                 .prepare        = slave_encoder_prepare,
                 .commit         = drm_i2c_encoder_commit,
                 .mode_set       = drm_i2c_encoder_mode_set,