From cc06fabbcd229dc77a5d7556c54d5875352ce1a7 Mon Sep 17 00:00:00 2001
From: Putin Lee <putin.li@rock-chips.com>
Date: Wed, 16 May 2018 16:05:40 +0800
Subject: [PATCH] video/rockchip: rga2: remove flush cache

Change-Id: If00a369f8e945a2f3b73920e6f1ba3cf455b8dfd
Signed-off-by: Putin Lee <putin.li@rock-chips.com>
---
 drivers/video/rockchip/rga2/rga2_mmu_info.c | 31 ---------------------
 1 file changed, 31 deletions(-)

diff --git a/drivers/video/rockchip/rga2/rga2_mmu_info.c b/drivers/video/rockchip/rga2/rga2_mmu_info.c
index 97cb671f5d0a..8f69b28b6fae 100644
--- a/drivers/video/rockchip/rga2/rga2_mmu_info.c
+++ b/drivers/video/rockchip/rga2/rga2_mmu_info.c
@@ -46,35 +46,6 @@ static void rga_dma_flush_range(void *pstart, void *pend)
 #endif
 }
 
-static void rga_dma_flush_page(struct page *page)
-{
-	phys_addr_t paddr;
-	void *virt;
-
-	paddr = page_to_phys(page);
-#ifdef CONFIG_ARM
-	if (PageHighMem(page)) {
-		if (cache_is_vipt_nonaliasing()) {
-			virt = kmap_atomic(page);
-			dmac_flush_range(virt, virt + PAGE_SIZE);
-			kunmap_atomic(virt);
-		} else {
-			virt = kmap_high_get(page);
-			dmac_flush_range(virt, virt + PAGE_SIZE);
-			kunmap_high(page);
-		}
-	} else {
-		virt = page_address(page);
-		dmac_flush_range(virt, virt + PAGE_SIZE);
-	}
-
-	outer_flush_range(paddr, paddr + PAGE_SIZE);
-#elif defined(CONFIG_ARM64)
-	virt = page_address(page);
-	__dma_flush_range(virt, virt + PAGE_SIZE);
-#endif
-}
-
 #if 0
 static unsigned int armv7_va_to_pa(unsigned int v_addr)
 {
@@ -323,7 +294,6 @@ static int rga2_MapUserMemory(struct page **pages, uint32_t *pageTable,
 		for (i = 0; i < pageCount; i++) {
 			/* Get the physical address from page struct. */
 			pageTable[i] = page_to_phys(pages[i]);
-			rga_dma_flush_page(pages[i]);
 		}
 		for (i = 0; i < result; i++)
 			put_page(pages[i]);
@@ -372,7 +342,6 @@ static int rga2_MapUserMemory(struct page **pages, uint32_t *pageTable,
 			   << PAGE_SHIFT)) & ~PAGE_MASK));
 		pte_unmap_unlock(pte, ptl);
 		pageTable[i] = (uint32_t)Address;
-		rga_dma_flush_page(pfn_to_page(pfn));
 	}
 	up_read(&current->mm->mmap_sem);
 	return status;