drm/i915: Drop dev from pte_encode

The original pte_encode function needed the dev argument so we could do
platform specific handling via IS_GENX, etc. With the merging of a pte
encoding function there should never been a need to quirk away gen
specific details.

The patch doesn't do much but makes the upcoming reworks in gtt/ppgtt/mm
slightly (albeit, ever so) easier.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.h

@@ -482,8 +482,7 @@ struct i915_gtt {
 				   struct sg_table *st,
 				   unsigned int pg_start,
 				   enum i915_cache_level cache_level);
-	gen6_gtt_pte_t (*pte_encode)(struct drm_device *dev,
-				     dma_addr_t addr,
+	gen6_gtt_pte_t (*pte_encode)(dma_addr_t addr,
 				     enum i915_cache_level level);
 };
 #define gtt_total_entries(gtt) ((gtt).total >> PAGE_SHIFT)
@@ -503,8 +502,7 @@ struct i915_hw_ppgtt {
 			       struct sg_table *st,
 			       unsigned int pg_start,
 			       enum i915_cache_level cache_level);
-	gen6_gtt_pte_t (*pte_encode)(struct drm_device *dev,
-				     dma_addr_t addr,
+	gen6_gtt_pte_t (*pte_encode)(dma_addr_t addr,
 				     enum i915_cache_level level);
 	int (*enable)(struct drm_device *dev);
 	void (*cleanup)(struct i915_hw_ppgtt *ppgtt);

drivers/gpu/drm/i915/i915_gem_gtt.c

@@ -45,8 +45,7 @@
 #define GEN6_PTE_CACHE_LLC_MLC		(3 << 1)
 #define GEN6_PTE_ADDR_ENCODE(addr)	GEN6_GTT_ADDR_ENCODE(addr)
 
-static gen6_gtt_pte_t gen6_pte_encode(struct drm_device *dev,
-				      dma_addr_t addr,
+static gen6_gtt_pte_t gen6_pte_encode(dma_addr_t addr,
 				      enum i915_cache_level level)
 {
 	gen6_gtt_pte_t pte = GEN6_PTE_VALID;
@@ -72,8 +71,7 @@ static gen6_gtt_pte_t gen6_pte_encode(struct drm_device *dev,
 #define BYT_PTE_WRITEABLE		(1 << 1)
 #define BYT_PTE_SNOOPED_BY_CPU_CACHES	(1 << 2)
 
-static gen6_gtt_pte_t byt_pte_encode(struct drm_device *dev,
-				     dma_addr_t addr,
+static gen6_gtt_pte_t byt_pte_encode(dma_addr_t addr,
 				     enum i915_cache_level level)
 {
 	gen6_gtt_pte_t pte = GEN6_PTE_VALID;
@@ -90,8 +88,7 @@ static gen6_gtt_pte_t byt_pte_encode(struct drm_device *dev,
 	return pte;
 }
 
-static gen6_gtt_pte_t hsw_pte_encode(struct drm_device *dev,
-				     dma_addr_t addr,
+static gen6_gtt_pte_t hsw_pte_encode(dma_addr_t addr,
 				     enum i915_cache_level level)
 {
 	gen6_gtt_pte_t pte = GEN6_PTE_VALID;
@@ -194,8 +191,7 @@ static void gen6_ppgtt_clear_range(struct i915_hw_ppgtt *ppgtt,
 	unsigned first_pte = first_entry % I915_PPGTT_PT_ENTRIES;
 	unsigned last_pte, i;
 
-	scratch_pte = ppgtt->pte_encode(ppgtt->dev,
-					dev_priv->gtt.scratch.addr,
+	scratch_pte = ppgtt->pte_encode(dev_priv->gtt.scratch.addr,
 					I915_CACHE_LLC);
 
 	while (num_entries) {
@@ -231,8 +227,7 @@ static void gen6_ppgtt_insert_entries(struct i915_hw_ppgtt *ppgtt,
 		dma_addr_t page_addr;
 
 		page_addr = sg_page_iter_dma_address(&sg_iter);
-		pt_vaddr[act_pte] = ppgtt->pte_encode(ppgtt->dev, page_addr,
-						      cache_level);
+		pt_vaddr[act_pte] = ppgtt->pte_encode(page_addr, cache_level);
 		if (++act_pte == I915_PPGTT_PT_ENTRIES) {
 			kunmap_atomic(pt_vaddr);
 			act_pt++;
@@ -483,7 +478,7 @@ static void gen6_ggtt_insert_entries(struct drm_device *dev,
 
 	for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) {
 		addr = sg_page_iter_dma_address(&sg_iter);
-		iowrite32(dev_priv->gtt.pte_encode(dev, addr, level),
+		iowrite32(dev_priv->gtt.pte_encode(addr, level),
 			  &gtt_entries[i]);
 		i++;
 	}
@@ -496,7 +491,7 @@ static void gen6_ggtt_insert_entries(struct drm_device *dev,
 	 */
 	if (i != 0)
 		WARN_ON(readl(&gtt_entries[i-1])
-			!= dev_priv->gtt.pte_encode(dev, addr, level));
+			!= dev_priv->gtt.pte_encode(addr, level));
 
 	/* This next bit makes the above posting read even more important. We
 	 * want to flush the TLBs only after we're certain all the PTE updates
@@ -521,7 +516,7 @@ static void gen6_ggtt_clear_range(struct drm_device *dev,
 		 first_entry, num_entries, max_entries))
 		num_entries = max_entries;
 
-	scratch_pte = dev_priv->gtt.pte_encode(dev, dev_priv->gtt.scratch.addr,
+	scratch_pte = dev_priv->gtt.pte_encode(dev_priv->gtt.scratch.addr,
 					       I915_CACHE_LLC);
 	for (i = 0; i < num_entries; i++)
 		iowrite32(scratch_pte, &gtt_base[i]);