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Re: [PATCH 6/7] hw/display/artist: Fix artist screen resolution


From: Helge Deller
Subject: Re: [PATCH 6/7] hw/display/artist: Fix artist screen resolution
Date: Thu, 3 Sep 2020 08:09:36 +0200

New patch #3/3:

From 476aeb9b832ae172a9d6a28aa9e43300dedd419b Mon Sep 17 00:00:00 2001
Subject: [PATCH] hw/display/artist: Allow screen size up to 2048 lines

Adjust the ADDR_TO_Y() macro to extract 11 bits, which allows userspace
to address screen sizes up to 2048 lines (instead of 1024 before).

Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/hw/display/artist.c b/hw/display/artist.c
index 16d85c65f8..955296d3d8 100644
--- a/hw/display/artist.c
+++ b/hw/display/artist.c
@@ -193,7 +193,7 @@ static const char *artist_reg_name(uint64_t addr)
 #undef REG_NAME

 /* artist has a fixed line length of 2048 bytes. */
-#define ADDR_TO_Y(addr) extract32(addr, 11, 10)
+#define ADDR_TO_Y(addr) extract32(addr, 11, 11)
 #define ADDR_TO_X(addr) extract32(addr, 0, 11)

 static int16_t artist_get_x(uint32_t reg)



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