From 40ae03dadbee188ee991173af917544f56d76da2 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Tue, 14 Jul 2009 02:38:18 -0300
Subject: [PATCH] --- yaml --- r: 155773 b: refs/heads/master c:
 e11206e67f738b04d0c508795adc9bff504bc875 h: refs/heads/master i:   155771:
 a62cb5331ff5fced5d0255fd7aa533a5e0003e68 v: v3

---
 [refs]                              |  2 +-
 trunk/drivers/media/video/mt9v011.c | 32 ++++++++++++++++++++++++++++-
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index addbe5352ac3..6d5e3bf649c7 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5569996421fa1cfc1fc0d9e683ac1def46ea985d
+refs/heads/master: e11206e67f738b04d0c508795adc9bff504bc875
diff --git a/trunk/drivers/media/video/mt9v011.c b/trunk/drivers/media/video/mt9v011.c
index 241382f5ba21..f7b5279a7d5a 100644
--- a/trunk/drivers/media/video/mt9v011.c
+++ b/trunk/drivers/media/video/mt9v011.c
@@ -8,6 +8,7 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <linux/delay.h>
+#include <asm/div64.h>
 #include <media/v4l2-device.h>
 #include "mt9v011.h"
 #include <media/v4l2-i2c-drv.h>
@@ -57,6 +58,7 @@ static struct v4l2_queryctrl mt9v011_qctrl[] = {
 struct mt9v011 {
 	struct v4l2_subdev sd;
 	unsigned width, height;
+	unsigned xtal;
 
 	u16 global_gain, red_bal, blue_bal;
 };
@@ -131,7 +133,7 @@ static const struct i2c_reg_value mt9v011_init_default[] = {
 		{ R1E_MT9V011_DIGITAL_ZOOM,  0x0000 },
 		{ R20_MT9V011_READ_MODE, 0x1000 },
 
-		{ R07_MT9V011_OUT_CTRL, 0x000a },	/* chip enable */
+		{ R07_MT9V011_OUT_CTRL, 0x0002 },	/* chip enable */
 };
 
 static void set_balance(struct v4l2_subdev *sd)
@@ -154,6 +156,31 @@ static void set_balance(struct v4l2_subdev *sd)
 	mt9v011_write(sd, R2D_MT9V011_RED_GAIN, red_gain);
 }
 
+static void calc_fps(struct v4l2_subdev *sd)
+{
+	struct mt9v011 *core = to_mt9v011(sd);
+	unsigned height, width, hblank, vblank, speed;
+	unsigned row_time, t_time;
+	u64 frames_per_ms;
+	unsigned tmp;
+
+	height = mt9v011_read(sd, R03_MT9V011_HEIGHT);
+	width = mt9v011_read(sd, R04_MT9V011_WIDTH);
+	hblank = mt9v011_read(sd, R05_MT9V011_HBLANK);
+	vblank = mt9v011_read(sd, R06_MT9V011_VBLANK);
+	speed = mt9v011_read(sd, R0A_MT9V011_CLK_SPEED);
+
+	row_time = (width + 113 + hblank) * (speed + 2);
+	t_time = row_time * (height + vblank + 1);
+
+	frames_per_ms = core->xtal * 1000l;
+	do_div(frames_per_ms, t_time);
+	tmp = frames_per_ms;
+
+	v4l2_dbg(1, debug, sd, "Programmed to %u.%03u fps (%d pixel clcks)\n",
+		tmp / 1000, tmp % 1000, t_time);
+}
+
 static void set_res(struct v4l2_subdev *sd)
 {
 	struct mt9v011 *core = to_mt9v011(sd);
@@ -179,6 +206,8 @@ static void set_res(struct v4l2_subdev *sd)
 	mt9v011_write(sd, R01_MT9V011_ROWSTART, vstart);
 	mt9v011_write(sd, R03_MT9V011_HEIGHT, core->height);
 	mt9v011_write(sd, R06_MT9V011_VBLANK, 508 - core->height);
+
+	calc_fps(sd);
 };
 
 static int mt9v011_reset(struct v4l2_subdev *sd, u32 val)
@@ -413,6 +442,7 @@ static int mt9v011_probe(struct i2c_client *c,
 	core->global_gain = 0x0024;
 	core->width  = 640;
 	core->height = 480;
+	core->xtal = 27000000;	/* Hz */
 
 	v4l_info(c, "chip found @ 0x%02x (%s)\n",
 		 c->addr << 1, c->adapter->name);