From: Nanxin Qin <nanxin.qin@amlogic.com>
Date: Tue, 12 Mar 2019 12:35:54 +0000 (+0800)
Subject: codec_mm: changes the prot of pages to PAGE_KERNEL. [2/2]
X-Git-Tag: hardkernel-4.9.236-104~1621
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=38c72c8cf1a4666358490c75417e4996077dd792;p=platform%2Fkernel%2Flinux-amlogic.git

codec_mm: changes the prot of pages to PAGE_KERNEL. [2/2]

PD#SWPL-4597

Problem:
Probabilistic full-screen display mosaic after seek 8K H265

Solution:
alloc mem area with the cached which from the vmap. this way
can improve the efficiency of I/O.

Change-Id: Icf18b9cd57bdc54f832aa827a535399939b28611
Signed-off-by: Nanxin Qin <nanxin.qin@amlogic.com>
---

diff --git a/drivers/amlogic/media/common/codec_mm/codec_mm.c b/drivers/amlogic/media/common/codec_mm/codec_mm.c
index 4461f65..33466a8 100644
--- a/drivers/amlogic/media/common/codec_mm/codec_mm.c
+++ b/drivers/amlogic/media/common/codec_mm/codec_mm.c
@@ -329,14 +329,11 @@ u8 *codec_mm_vmap(ulong addr, u32 size)
 	struct page **pages = NULL;
 	u32 i, npages, offset = 0;
 	ulong phys, page_start;
-	pgprot_t pgprot;
+	pgprot_t pgprot = PAGE_KERNEL;
 
 	if (!PageHighMem(phys_to_page(addr)))
 		return phys_to_virt(addr);
 
-	/*No cache*/
-	pgprot = pgprot_noncached(PAGE_KERNEL);
-
 	offset = offset_in_page(addr);
 	page_start = addr - offset;
 	npages = DIV_ROUND_UP(size + offset, PAGE_SIZE);
@@ -874,7 +871,8 @@ void codec_mm_dma_flush(void *vaddr,
 			phy_addr = page_to_phys(vmalloc_to_page(vaddr))
 				+ offset_in_page(vaddr);
 		if (phy_addr && PageHighMem(phys_to_page(phy_addr)))
-			flush_cache_vmap(phy_addr, phy_addr + size);
+			dma_sync_single_for_device(mgt->dev,
+					phy_addr, size, dir);
 		return;
 	}