From 3290d40206ce122058a1f1f56dfce3d2000107b3 Mon Sep 17 00:00:00 2001
From: Erik Andr?n <erik.andren@gmail.com>
Date: Tue, 13 Jan 2009 16:40:28 -0300
Subject: [PATCH] V4L/DVB (11529): gspca - m5602-s5k4aa: Add noise suppression
 ctrl

Signed-off-by: Erik Andr?n <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 .../media/video/gspca/m5602/m5602_s5k4aa.c    | 54 +++++++++++++++++--
 .../media/video/gspca/m5602/m5602_s5k4aa.h    |  1 +
 .../media/video/gspca/m5602/m5602_sensor.h    |  1 +
 3 files changed, 52 insertions(+), 4 deletions(-)

diff --git a/drivers/media/video/gspca/m5602/m5602_s5k4aa.c b/drivers/media/video/gspca/m5602/m5602_s5k4aa.c
index 3a3df102637f..4ecba9b2a5a4 100644
--- a/drivers/media/video/gspca/m5602/m5602_s5k4aa.c
+++ b/drivers/media/video/gspca/m5602/m5602_s5k4aa.c
@@ -26,6 +26,8 @@ static int s5k4aa_get_hflip(struct gspca_dev *gspca_dev, __s32 *val);
 static int s5k4aa_set_hflip(struct gspca_dev *gspca_dev, __s32 val);
 static int s5k4aa_get_gain(struct gspca_dev *gspca_dev, __s32 *val);
 static int s5k4aa_set_gain(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k4aa_get_noise(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k4aa_set_noise(struct gspca_dev *gspca_dev, __s32 val);
 
 static
     const
@@ -131,7 +133,21 @@ const static struct ctrl s5k4aa_ctrls[] = {
 		},
 		.set = s5k4aa_set_exposure,
 		.get = s5k4aa_get_exposure
-	}
+	},
+#define NOISE_SUPP_IDX 4
+	{
+		{
+			.id		= V4L2_CID_PRIVATE_BASE,
+			.type		= V4L2_CTRL_TYPE_BOOLEAN,
+			.name		= "Noise suppression (smoothing)",
+			.minimum	= 0,
+			.maximum	= 1,
+			.step		= 1,
+			.default_value	= 1,
+		},
+			.set = s5k4aa_set_noise,
+			.get = s5k4aa_get_noise
+	},
 };
 
 static void s5k4aa_dump_registers(struct sd *sd);
@@ -304,13 +320,15 @@ int s5k4aa_init(struct sd *sd)
 	if (err < 0)
 		return err;
 
-	err = s5k4aa_set_vflip(&sd->gspca_dev, sensor_settings[VFLIP_IDX]);
+	err = s5k4aa_set_noise(&sd->gspca_dev, sensor_settings[NOISE_SUPP_IDX]);
 	if (err < 0)
 		return err;
 
-	err = s5k4aa_set_hflip(&sd->gspca_dev, sensor_settings[HFLIP_IDX]);
+	err = s5k4aa_set_vflip(&sd->gspca_dev, sensor_settings[VFLIP_IDX]);
+	if (err < 0)
+		return err;
 
-	return err;
+	return s5k4aa_set_hflip(&sd->gspca_dev, sensor_settings[HFLIP_IDX]);
 }
 
 static int s5k4aa_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
@@ -495,6 +513,34 @@ static int s5k4aa_set_gain(struct gspca_dev *gspca_dev, __s32 val)
 	return err;
 }
 
+static int s5k4aa_get_noise(struct gspca_dev *gspca_dev, __s32 *val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	s32 *sensor_settings = sd->sensor_priv;
+
+	*val = sensor_settings[NOISE_SUPP_IDX];
+	PDEBUG(D_V4L2, "Read noise %d", *val);
+	return 0;
+}
+
+static int s5k4aa_set_noise(struct gspca_dev *gspca_dev, __s32 val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	s32 *sensor_settings = sd->sensor_priv;
+	u8 data = S5K4AA_PAGE_MAP_2;
+	int err;
+
+	sensor_settings[NOISE_SUPP_IDX] = val;
+
+	PDEBUG(D_V4L2, "Set noise to %d", val);
+	err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
+	if (err < 0)
+		return err;
+
+	data = val & 0x01;
+	return m5602_write_sensor(sd, S5K4AA_NOISE_SUPP, &data, 1);
+}
+
 void s5k4aa_disconnect(struct sd *sd)
 {
 	sd->sensor = NULL;
diff --git a/drivers/media/video/gspca/m5602/m5602_s5k4aa.h b/drivers/media/video/gspca/m5602/m5602_s5k4aa.h
index fbcb9c1e8c9d..8299f216c20d 100644
--- a/drivers/media/video/gspca/m5602/m5602_s5k4aa.h
+++ b/drivers/media/video/gspca/m5602/m5602_s5k4aa.h
@@ -49,6 +49,7 @@
 #define S5K4AA_EXPOSURE_LO		0x18
 #define S5K4AA_GAIN_1			0x1f /* (digital?) gain : 5 bits */
 #define S5K4AA_GAIN_2			0x20 /* (analogue?) gain : 7 bits */
+#define S5K4AA_NOISE_SUPP		0x37
 
 #define S5K4AA_RM_ROW_SKIP_4X		0x08
 #define S5K4AA_RM_ROW_SKIP_2X		0x04
diff --git a/drivers/media/video/gspca/m5602/m5602_sensor.h b/drivers/media/video/gspca/m5602/m5602_sensor.h
index 5b76b6b62152..c3a72117b39c 100644
--- a/drivers/media/video/gspca/m5602/m5602_sensor.h
+++ b/drivers/media/video/gspca/m5602/m5602_sensor.h
@@ -22,6 +22,7 @@
 #include "m5602_bridge.h"
 
 #define M5602_V4L2_CID_GREEN_BALANCE	(V4L2_CID_PRIVATE_BASE + 0)
+#define M5602_V4L2_CID_NOISE_SUPPRESION	(V4L2_CID_PRIVATE_BASE + 1)
 
 /* Enumerates all supported sensors */
 enum sensors {
-- 
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