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From fbc4a50eafe5d5023ef1c0a32d362c2166946164 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Date: Wed, 24 Jun 2009 14:56:29 +0300
Subject: [PATCH 126/146] DSS2: OMAPFB: implement OMAPFB_GET_VRAM_INFO ioctl
This ioctl can be used to guess how big buffers it is possible to
reserve.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
---
drivers/video/omap2/omapfb/omapfb-ioctl.c | 18 ++++++++++++++++++
include/linux/omapfb.h | 8 ++++++++
2 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/drivers/video/omap2/omapfb/omapfb-ioctl.c b/drivers/video/omap2/omapfb/omapfb-ioctl.c
index 257f7cb..70fb64e 100644
--- a/drivers/video/omap2/omapfb/omapfb-ioctl.c
+++ b/drivers/video/omap2/omapfb/omapfb-ioctl.c
@@ -30,6 +30,7 @@
#include <mach/display.h>
#include <mach/vrfb.h>
+#include <mach/vram.h>
#include "omapfb.h"
@@ -475,6 +476,7 @@ int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
enum omapfb_update_mode update_mode;
int test_num;
struct omapfb_memory_read memory_read;
+ struct omapfb_vram_info vram_info;
} p;
int r = 0;
@@ -695,6 +697,22 @@ int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
break;
+ case OMAPFB_GET_VRAM_INFO: {
+ unsigned long vram, free, largest;
+
+ DBG("ioctl GET_VRAM_INFO\n");
+
+ omap_vram_get_info(&vram, &free, &largest);
+ p.vram_info.total = vram;
+ p.vram_info.free = free;
+ p.vram_info.largest_free_block = largest;
+
+ if (copy_to_user((void __user *)arg, &p.vram_info,
+ sizeof(p.vram_info)))
+ r = -EFAULT;
+ break;
+ }
+
default:
dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
r = -EINVAL;
diff --git a/include/linux/omapfb.h b/include/linux/omapfb.h
index 5014d2e..0df0df9 100644
--- a/include/linux/omapfb.h
+++ b/include/linux/omapfb.h
@@ -56,6 +56,7 @@
#define OMAPFB_MEMORY_READ OMAP_IOR(58, struct omapfb_memory_read)
#define OMAPFB_GET_OVERLAY_COLORMODE OMAP_IOR(59, struct omapfb_ovl_colormode)
#define OMAPFB_WAITFORGO OMAP_IO(60)
+#define OMAPFB_GET_VRAM_INFO OMAP_IOR(61, struct omapfb_vram_info)
#define OMAPFB_CAPS_GENERIC_MASK 0x00000fff
#define OMAPFB_CAPS_LCDC_MASK 0x00fff000
@@ -194,6 +195,13 @@ struct omapfb_ovl_colormode {
struct fb_bitfield transp;
};
+struct omapfb_vram_info {
+ __u32 total;
+ __u32 free;
+ __u32 largest_free_block;
+ __u32 reserved[5];
+};
+
#ifdef __KERNEL__
#include <linux/completion.h>
--
1.6.2.4
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