msm: board: reserve mdp writeback memory
The memory allocation happens on the display mdp driver side. This
separation of writeback buffers from the frame buffer is mainly for
content security.
Change-Id: I404b5f8db01dd5ed940916d7d46a8ace2d295e3a
Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-8930-display.c b/arch/arm/mach-msm/board-8930-display.c
index 2fb6153..2e6718d 100644
--- a/arch/arm/mach-msm/board-8930-display.c
+++ b/arch/arm/mach-msm/board-8930-display.c
@@ -17,6 +17,7 @@
#include <linux/bootmem.h>
#include <asm/mach-types.h>
#include <mach/msm_bus_board.h>
+#include <mach/msm_memtypes.h>
#include <mach/board.h>
#include <mach/gpio.h>
#include <mach/gpiomux.h>
@@ -65,6 +66,18 @@
MSM_FB_WRITEBACK_SIZE, 4096)
#endif
+#ifdef CONFIG_FB_MSM_OVERLAY0_WRITEBACK
+#define MSM_FB_OVERLAY0_WRITEBACK_SIZE roundup((1376 * 768 * 3 * 2), 4096)
+#else
+#define MSM_FB_OVERLAY0_WRITEBACK_SIZE (0)
+#endif /* CONFIG_FB_MSM_OVERLAY0_WRITEBACK */
+
+#ifdef CONFIG_FB_MSM_OVERLAY1_WRITEBACK
+#define MSM_FB_OVERLAY1_WRITEBACK_SIZE roundup((1920 * 1088 * 3 * 2), 4096)
+#else
+#define MSM_FB_OVERLAY1_WRITEBACK_SIZE (0)
+#endif /* CONFIG_FB_MSM_OVERLAY1_WRITEBACK */
+
#define MDP_VSYNC_GPIO 0
#define PANEL_NAME_MAX_LEN 30
@@ -439,8 +452,21 @@
#endif
.mdp_rev = MDP_REV_42,
.writeback_offset = writeback_offset,
+ .mdp_writeback_memtype = MEMTYPE_EBI1,
+ .mdp_writeback_phys = NULL,
};
+void __init msm8930_mdp_writeback(struct memtype_reserve* reserve_table)
+{
+ mdp_pdata.mdp_writeback_size_ov0 = MSM_FB_OVERLAY0_WRITEBACK_SIZE;
+ mdp_pdata.mdp_writeback_size_ov1 = MSM_FB_OVERLAY1_WRITEBACK_SIZE;
+
+ reserve_table[mdp_pdata.mdp_writeback_memtype].size +=
+ mdp_pdata.mdp_writeback_size_ov0;
+ reserve_table[mdp_pdata.mdp_writeback_memtype].size +=
+ mdp_pdata.mdp_writeback_size_ov1;
+}
+
#define LPM_CHANNEL0 0
static int toshiba_gpio[] = {LPM_CHANNEL0};