From: Krzysztof Helt <krzysztof.h1@wp.pl>
Date: Tue, 31 Mar 2009 22:25:47 +0000 (-0700)
Subject: atyfb: speed up Mach64 cursor
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2f682fae611df642acfb99b5f2fd665f001cd253;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

atyfb: speed up Mach64 cursor

Save one fifo entry on cursor enabling and disabling.

Save another fifo entry for FB_CUR_SETPOS operation by removing redundant one.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/video/aty/mach64_cursor.c b/drivers/video/aty/mach64_cursor.c
index faf95da8fcbc..04c710804bb0 100644
--- a/drivers/video/aty/mach64_cursor.c
+++ b/drivers/video/aty/mach64_cursor.c
@@ -77,9 +77,13 @@ static int atyfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 	if (par->asleep)
 		return -EPERM;
 
-	/* Hide cursor */
 	wait_for_fifo(1, par);
-	aty_st_le32(GEN_TEST_CNTL, aty_ld_le32(GEN_TEST_CNTL, par) & ~HWCURSOR_ENABLE, par);
+	if (cursor->enable)
+		aty_st_le32(GEN_TEST_CNTL, aty_ld_le32(GEN_TEST_CNTL, par)
+			    | HWCURSOR_ENABLE, par);
+	else
+		aty_st_le32(GEN_TEST_CNTL, aty_ld_le32(GEN_TEST_CNTL, par)
+				& ~HWCURSOR_ENABLE, par);
 
 	/* set position */
 	if (cursor->set & FB_CUR_SETPOS) {
@@ -109,7 +113,7 @@ static int atyfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 			y<<=1;
 			h<<=1;
 		}
-		wait_for_fifo(4, par);
+		wait_for_fifo(3, par);
 		aty_st_le32(CUR_OFFSET, (info->fix.smem_len >> 3) + (yoff << 1), par);
 		aty_st_le32(CUR_HORZ_VERT_OFF,
 			    ((u32) (64 - h + yoff) << 16) | xoff, par);
@@ -177,11 +181,6 @@ static int atyfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 	    }
 	}
 
-	if (cursor->enable) {
-		wait_for_fifo(1, par);
-		aty_st_le32(GEN_TEST_CNTL, aty_ld_le32(GEN_TEST_CNTL, par)
-			    | HWCURSOR_ENABLE, par);
-	}
 	return 0;
 }