Merge branch 'bdw-fixes' into backlight-rework

Merge the bdw changes into the backlight rework branch so that we can
adapt the new code for bdw, too.  This is a bit a mess, but doing this
another way would have delayed the merging of the backlight
refactoring. Mea culpa.

As discussed with Jani on irc only do bdw-specific callbacks for the
set/get methods and bake in the only other special-case into the pch
enable function.

Conflicts:
	drivers/gpu/drm/i915/intel_panel.c

v2: Don't enable the PWM too early for bdw (Jani).

v3: Create new bdw_ functions for setup and enable - the rules change
sufficiently imo with the switch from controlling the pwm from the cpu
to controlling it completel from the pch to warrant this.

v4: Rip out unused pipe variable in bdw_enable_backlight (0-day
builder).

Tested-by: Ben Widawsky <ben@bwidawsk.net> (on bdw)
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c
index 6d0952366f91..6ef0b035becb 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c
@@ -145,7 +145,9 @@ static void vmw_gmr_free_descriptors(struct device *dev, dma_addr_t desc_dma,
 		}
 
 		page_virtual = kmap_atomic(page);
-		desc_dma = page_virtual[desc_per_page].ppn << PAGE_SHIFT;
+		desc_dma = (dma_addr_t)
+			le32_to_cpu(page_virtual[desc_per_page].ppn) <<
+			PAGE_SHIFT;
 		kunmap_atomic(page_virtual);
 
 		__free_page(page);
@@ -217,7 +219,8 @@ static int vmw_gmr_build_descriptors(struct device *dev,
 	desc_dma = 0;
 	list_for_each_entry_reverse(page, desc_pages, lru) {
 		page_virtual = kmap_atomic(page);
-		page_virtual[desc_per_page].ppn = desc_dma >> PAGE_SHIFT;
+		page_virtual[desc_per_page].ppn = cpu_to_le32
+			(desc_dma >> PAGE_SHIFT);
 		kunmap_atomic(page_virtual);
 		desc_dma = dma_map_page(dev, page, 0, PAGE_SIZE,
 					DMA_TO_DEVICE);