52 files changed, 290 insertions, 281 deletions

diff --git a/Documentation/video4linux/v4l2-framework.txt b/Documentation/video4linux/v4l2-framework.txt
index 3b483c1e0124..ff124374e9ba 100644
--- a/Documentation/video4linux/v4l2-framework.txt
+++ b/Documentation/video4linux/v4l2-framework.txt
@@ -184,7 +184,7 @@ may be NULL if the subdev driver does not support anything from that category.
 It looks like this:
 
 struct v4l2_subdev_core_ops {
-        int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip);
+        int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip);
         int (*log_status)(struct v4l2_subdev *sd);
         int (*init)(struct v4l2_subdev *sd, u32 val);
         ...
diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index ebcb8e5e9c4d..d2f43bd2f841 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -2039,7 +2039,7 @@ static int bttv_log_status(struct file *file, void *f)
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int bttv_g_register(struct file *file, void *f,
-                                        struct v4l2_register *reg)
+                                        struct v4l2_dbg_register *reg)
 {
         struct bttv_fh *fh = f;
         struct bttv *btv = fh->btv;
@@ -2047,18 +2047,19 @@ static int bttv_g_register(struct file *file, void *f,
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
 
-        if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_host(&reg->match))
                 return -EINVAL;
 
         /* bt848 has a 12-bit register space */
         reg->reg &= 0xfff;
         reg->val = btread(reg->reg);
+        reg->size = 1;
 
         return 0;
 }
 
 static int bttv_s_register(struct file *file, void *f,
-                                        struct v4l2_register *reg)
+                                        struct v4l2_dbg_register *reg)
 {
         struct bttv_fh *fh = f;
         struct bttv *btv = fh->btv;
@@ -2066,7 +2067,7 @@ static int bttv_s_register(struct file *file, void *f,
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
 
-        if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_host(&reg->match))
                 return -EINVAL;
 
         /* bt848 has a 12-bit register space */
diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c
index 476171cf5001..34a39d2e4703 100644
--- a/drivers/media/video/cafe_ccic.c
+++ b/drivers/media/video/cafe_ccic.c
@@ -859,7 +859,7 @@ static int __cafe_cam_reset(struct cafe_camera *cam)
  */
 static int cafe_cam_init(struct cafe_camera *cam)
 {
-        struct v4l2_chip_ident chip = { V4L2_CHIP_MATCH_I2C_ADDR, 0, 0, 0 };
+        struct v4l2_dbg_chip_ident chip;
         int ret;
 
         mutex_lock(&cam->s_mutex);
@@ -869,8 +869,9 @@ static int cafe_cam_init(struct cafe_camera *cam)
         ret = __cafe_cam_reset(cam);
         if (ret)
                 goto out;
-        chip.match_chip = cam->sensor->addr;
-        ret = __cafe_cam_cmd(cam, VIDIOC_G_CHIP_IDENT, &chip);
+        chip.match.type = V4L2_CHIP_MATCH_I2C_ADDR;
+        chip.match.addr = cam->sensor->addr;
+        ret = __cafe_cam_cmd(cam, VIDIOC_DBG_G_CHIP_IDENT, &chip);
         if (ret)
                 goto out;
         cam->sensor_type = chip.ident;
diff --git a/drivers/media/video/cs5345.c b/drivers/media/video/cs5345.c
index 70fcd0d5de13..14bebf8a116f 100644
--- a/drivers/media/video/cs5345.c
+++ b/drivers/media/video/cs5345.c
@@ -95,25 +95,24 @@ static int cs5345_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 }
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-static int cs5345_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int cs5345_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
+        reg->size = 1;
         reg->val = cs5345_read(sd, reg->reg & 0x1f);
         return 0;
 }
 
-static int cs5345_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int cs5345_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
@@ -122,7 +121,7 @@ static int cs5345_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
 }
 #endif
 
-static int cs5345_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int cs5345_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
diff --git a/drivers/media/video/cs53l32a.c b/drivers/media/video/cs53l32a.c
index cb65d519cf78..7292a6316e63 100644
--- a/drivers/media/video/cs53l32a.c
+++ b/drivers/media/video/cs53l32a.c
@@ -102,7 +102,7 @@ static int cs53l32a_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
         return 0;
 }
 
-static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
diff --git a/drivers/media/video/cx18/cx18-i2c.c b/drivers/media/video/cx18/cx18-i2c.c
index 8941f58bed7f..83e1c6333126 100644
--- a/drivers/media/video/cx18/cx18-i2c.c
+++ b/drivers/media/video/cx18/cx18-i2c.c
@@ -242,7 +242,7 @@ int cx18_call_i2c_client(struct cx18 *cx, int addr, unsigned cmd, void *arg)
                         return retval;
                 }
         }
-        if (cmd != VIDIOC_G_CHIP_IDENT)
+        if (cmd != VIDIOC_DBG_G_CHIP_IDENT)
                 CX18_ERR("i2c addr 0x%02x not found for cmd 0x%x!\n",
                                addr, cmd);
         return -ENODEV;
@@ -268,17 +268,6 @@ static int cx18_i2c_id_addr(struct cx18 *cx, u32 id)
         return retval;
 }
 
-/* Find the i2c device name matching the DRIVERID */
-static const char *cx18_i2c_id_name(u32 id)
-{
-        int i;
-
-        for (i = 0; i < ARRAY_SIZE(hw_driverids); i++)
-                if (hw_driverids[i] == id)
-                        return hw_devicenames[i];
-        return "unknown device";
-}
-
 /* Find the i2c device name matching the CX18_HW_ flag */
 static const char *cx18_i2c_hw_name(u32 hw)
 {
@@ -326,21 +315,6 @@ int cx18_i2c_hw(struct cx18 *cx, u32 hw, unsigned int cmd, void *arg)
         return cx18_call_i2c_client(cx, addr, cmd, arg);
 }
 
-/* Calls i2c device based on I2C driver ID. */
-int cx18_i2c_id(struct cx18 *cx, u32 id, unsigned int cmd, void *arg)
-{
-        int addr;
-
-        addr = cx18_i2c_id_addr(cx, id);
-        if (addr < 0) {
-                if (cmd != VIDIOC_G_CHIP_IDENT)
-                        CX18_ERR("i2c ID 0x%08x (%s) not found for cmd 0x%x!\n",
-                                id, cx18_i2c_id_name(id), cmd);
-                return addr;
-        }
-        return cx18_call_i2c_client(cx, addr, cmd, arg);
-}
-
 /* broadcast cmd for all I2C clients and for the gpio subsystem */
 void cx18_call_i2c_clients(struct cx18 *cx, unsigned int cmd, void *arg)
 {
diff --git a/drivers/media/video/cx18/cx18-i2c.h b/drivers/media/video/cx18/cx18-i2c.h
index 113c3f9a2cc0..4869739013bd 100644
--- a/drivers/media/video/cx18/cx18-i2c.h
+++ b/drivers/media/video/cx18/cx18-i2c.h
@@ -23,7 +23,6 @@
 
 int cx18_i2c_hw_addr(struct cx18 *cx, u32 hw);
 int cx18_i2c_hw(struct cx18 *cx, u32 hw, unsigned int cmd, void *arg);
-int cx18_i2c_id(struct cx18 *cx, u32 id, unsigned int cmd, void *arg);
 int cx18_call_i2c_client(struct cx18 *cx, int addr, unsigned cmd, void *arg);
 void cx18_call_i2c_clients(struct cx18 *cx, unsigned int cmd, void *arg);
 int cx18_i2c_register(struct cx18 *cx, unsigned idx);
diff --git a/drivers/media/video/cx18/cx18-ioctl.c b/drivers/media/video/cx18/cx18-ioctl.c
index 8aa152b39545..7086aaba77d6 100644
--- a/drivers/media/video/cx18/cx18-ioctl.c
+++ b/drivers/media/video/cx18/cx18-ioctl.c
@@ -254,30 +254,24 @@ static int cx18_s_fmt_sliced_vbi_cap(struct file *file, void *fh,
 }
 
 static int cx18_g_chip_ident(struct file *file, void *fh,
-                                struct v4l2_chip_ident *chip)
+                                struct v4l2_dbg_chip_ident *chip)
 {
         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
 
         chip->ident = V4L2_IDENT_NONE;
         chip->revision = 0;
-        if (chip->match_type == V4L2_CHIP_MATCH_HOST) {
-                if (v4l2_chip_match_host(chip->match_type, chip->match_chip))
-                        chip->ident = V4L2_IDENT_CX23418;
+        if (v4l2_chip_match_host(&chip->match)) {
+                chip->ident = V4L2_IDENT_CX23418;
                 return 0;
         }
-        if (chip->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
-                return cx18_i2c_id(cx, chip->match_chip, VIDIOC_G_CHIP_IDENT,
-                                        chip);
-        if (chip->match_type == V4L2_CHIP_MATCH_I2C_ADDR)
-                return cx18_call_i2c_client(cx, chip->match_chip,
-                                                VIDIOC_G_CHIP_IDENT, chip);
-        return -EINVAL;
+        cx18_call_i2c_clients(cx, VIDIOC_DBG_G_CHIP_IDENT, chip);
+        return 0;
 }
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int cx18_cxc(struct cx18 *cx, unsigned int cmd, void *arg)
 {
-        struct v4l2_register *regs = arg;
+        struct v4l2_dbg_register *regs = arg;
         unsigned long flags;
 
         if (!capable(CAP_SYS_ADMIN))
@@ -286,6 +280,7 @@ static int cx18_cxc(struct cx18 *cx, unsigned int cmd, void *arg)
                 return -EINVAL;
 
         spin_lock_irqsave(&cx18_cards_lock, flags);
+        regs->size = 4;
         if (cmd == VIDIOC_DBG_G_REGISTER)
                 regs->val = cx18_read_enc(cx, regs->reg);
         else
@@ -295,31 +290,25 @@ static int cx18_cxc(struct cx18 *cx, unsigned int cmd, void *arg)
 }
 
 static int cx18_g_register(struct file *file, void *fh,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
 
-        if (v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (v4l2_chip_match_host(&reg->match))
                 return cx18_cxc(cx, VIDIOC_DBG_G_REGISTER, reg);
-        if (reg->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
-                return cx18_i2c_id(cx, reg->match_chip, VIDIOC_DBG_G_REGISTER,
-                                        reg);
-        return cx18_call_i2c_client(cx, reg->match_chip, VIDIOC_DBG_G_REGISTER,
-                                        reg);
+        cx18_call_i2c_clients(cx, VIDIOC_DBG_G_REGISTER, reg);
+        return 0;
 }
 
 static int cx18_s_register(struct file *file, void *fh,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
 
-        if (v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (v4l2_chip_match_host(&reg->match))
                 return cx18_cxc(cx, VIDIOC_DBG_S_REGISTER, reg);
-        if (reg->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
-                return cx18_i2c_id(cx, reg->match_chip, VIDIOC_DBG_S_REGISTER,
-                                        reg);
-        return cx18_call_i2c_client(cx, reg->match_chip, VIDIOC_DBG_S_REGISTER,
-                                        reg);
+        cx18_call_i2c_clients(cx, VIDIOC_DBG_S_REGISTER, reg);
+        return 0;
 }
 #endif
 
diff --git a/drivers/media/video/cx23885/cx23885-video.c b/drivers/media/video/cx23885/cx23885-video.c
index 637c4d008846..2d81c4d04340 100644
--- a/drivers/media/video/cx23885/cx23885-video.c
+++ b/drivers/media/video/cx23885/cx23885-video.c
@@ -1326,11 +1326,11 @@ static int vidioc_s_frequency(struct file *file, void *priv,
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int vidioc_g_register(struct file *file, void *fh,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
 
-        if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_host(&reg->match))
                 return -EINVAL;
 
         cx23885_call_i2c_clients(&dev->i2c_bus[2], VIDIOC_DBG_G_REGISTER, reg);
@@ -1339,11 +1339,11 @@ static int vidioc_g_register(struct file *file, void *fh,
 }
 
 static int vidioc_s_register(struct file *file, void *fh,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
 
-        if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_host(&reg->match))
                 return -EINVAL;
 
         cx23885_call_i2c_clients(&dev->i2c_bus[2], VIDIOC_DBG_S_REGISTER, reg);
diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c
index 2ad277189da8..88f2fd32bfe3 100644
--- a/drivers/media/video/cx25840/cx25840-core.c
+++ b/drivers/media/video/cx25840/cx25840-core.c
@@ -1120,25 +1120,24 @@ static int cx25840_init(struct v4l2_subdev *sd, u32 val)
 }
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-static int cx25840_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int cx25840_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
+        reg->size = 1;
         reg->val = cx25840_read(client, reg->reg & 0x0fff);
         return 0;
 }
 
-static int cx25840_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int cx25840_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
@@ -1362,7 +1361,7 @@ static int cx25840_reset(struct v4l2_subdev *sd, u32 val)
         return 0;
 }
 
-static int cx25840_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int cx25840_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct cx25840_state *state = to_state(sd);
         struct i2c_client *client = v4l2_get_subdevdata(sd);
diff --git a/drivers/media/video/cx88/cx88-video.c b/drivers/media/video/cx88/cx88-video.c
index b93b7ab99d8c..791e69d804f9 100644
--- a/drivers/media/video/cx88/cx88-video.c
+++ b/drivers/media/video/cx88/cx88-video.c
@@ -1447,25 +1447,26 @@ static int vidioc_s_frequency (struct file *file, void *priv,
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int vidioc_g_register (struct file *file, void *fh,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct cx88_core *core = ((struct cx8800_fh*)fh)->dev->core;
 
-        if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_host(&reg->match))
                 return -EINVAL;
         /* cx2388x has a 24-bit register space */
-        reg->val = cx_read(reg->reg&0xffffff);
+        reg->val = cx_read(reg->reg & 0xffffff);
+        reg->size = 4;
         return 0;
 }
 
 static int vidioc_s_register (struct file *file, void *fh,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct cx88_core *core = ((struct cx8800_fh*)fh)->dev->core;
 
-        if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_host(&reg->match))
                 return -EINVAL;
-        cx_write(reg->reg&0xffffff, reg->val);
+        cx_write(reg->reg & 0xffffff, reg->val);
         return 0;
 }
 #endif
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index 9cb7c64a88fa..416b691c33c1 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -1154,7 +1154,7 @@ static int em28xx_reg_len(int reg)
 }
 
 static int vidioc_g_chip_ident(struct file *file, void *priv,
-               struct v4l2_chip_ident *chip)
+               struct v4l2_dbg_chip_ident *chip)
 {
         struct em28xx_fh      *fh  = priv;
         struct em28xx         *dev = fh->dev;
@@ -1162,20 +1162,20 @@ static int vidioc_g_chip_ident(struct file *file, void *priv,
         chip->ident = V4L2_IDENT_NONE;
         chip->revision = 0;
 
-        em28xx_i2c_call_clients(dev, VIDIOC_G_CHIP_IDENT, chip);
+        em28xx_i2c_call_clients(dev, VIDIOC_DBG_G_CHIP_IDENT, chip);
 
         return 0;
 }
 
 
 static int vidioc_g_register(struct file *file, void *priv,
-                             struct v4l2_register *reg)
+                             struct v4l2_dbg_register *reg)
 {
         struct em28xx_fh      *fh  = priv;
         struct em28xx         *dev = fh->dev;
         int ret;
 
-        switch (reg->match_type) {
+        switch (reg->match.type) {
         case V4L2_CHIP_MATCH_AC97:
                 mutex_lock(&dev->lock);
                 ret = em28xx_read_ac97(dev, reg->reg);
@@ -1184,6 +1184,7 @@ static int vidioc_g_register(struct file *file, void *priv,
                         return ret;
 
                 reg->val = ret;
+                reg->size = 1;
                 return 0;
         case V4L2_CHIP_MATCH_I2C_DRIVER:
                 em28xx_i2c_call_clients(dev, VIDIOC_DBG_G_REGISTER, reg);
@@ -1192,12 +1193,13 @@ static int vidioc_g_register(struct file *file, void *priv,
                 /* Not supported yet */
                 return -EINVAL;
         default:
-                if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+                if (!v4l2_chip_match_host(&reg->match))
                         return -EINVAL;
         }
 
         /* Match host */
-        if (em28xx_reg_len(reg->reg) == 1) {
+        reg->size = em28xx_reg_len(reg->reg);
+        if (reg->size == 1) {
                 mutex_lock(&dev->lock);
                 ret = em28xx_read_reg(dev, reg->reg);
                 mutex_unlock(&dev->lock);
@@ -1207,7 +1209,7 @@ static int vidioc_g_register(struct file *file, void *priv,
 
                 reg->val = ret;
         } else {
-                __le64 val = 0;
+                __le16 val = 0;
                 mutex_lock(&dev->lock);
                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
                                                    reg->reg, (char *)&val, 2);
@@ -1215,21 +1217,21 @@ static int vidioc_g_register(struct file *file, void *priv,
                 if (ret < 0)
                         return ret;
 
-                reg->val = le64_to_cpu(val);
+                reg->val = le16_to_cpu(val);
         }
 
         return 0;
 }
 
 static int vidioc_s_register(struct file *file, void *priv,
-                             struct v4l2_register *reg)
+                             struct v4l2_dbg_register *reg)
 {
         struct em28xx_fh      *fh  = priv;
         struct em28xx         *dev = fh->dev;
-        __le64 buf;
+        __le16 buf;
         int    rc;
 
-        switch (reg->match_type) {
+        switch (reg->match.type) {
         case V4L2_CHIP_MATCH_AC97:
                 mutex_lock(&dev->lock);
                 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
@@ -1243,12 +1245,12 @@ static int vidioc_s_register(struct file *file, void *priv,
                 /* Not supported yet */
                 return -EINVAL;
         default:
-                if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+                if (!v4l2_chip_match_host(&reg->match))
                         return -EINVAL;
         }
 
         /* Match host */
-        buf = cpu_to_le64(reg->val);
+        buf = cpu_to_le16(reg->val);
 
         mutex_lock(&dev->lock);
         rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
diff --git a/drivers/media/video/ivtv/ivtv-driver.c b/drivers/media/video/ivtv/ivtv-driver.c
index 08b762951759..e8e5921cdc34 100644
--- a/drivers/media/video/ivtv/ivtv-driver.c
+++ b/drivers/media/video/ivtv/ivtv-driver.c
@@ -902,18 +902,19 @@ static void ivtv_load_and_init_modules(struct ivtv *itv)
         }
 
         if (hw & IVTV_HW_SAA711X) {
-                struct v4l2_chip_ident v = { V4L2_CHIP_MATCH_I2C_DRIVER, I2C_DRIVERID_SAA711X };
+                struct v4l2_dbg_chip_ident v;
 
                 /* determine the exact saa711x model */
                 itv->hw_flags &= ~IVTV_HW_SAA711X;
 
+                v.match.type = V4L2_CHIP_MATCH_I2C_DRIVER;
+                strlcpy(v.match.name, "saa7115", sizeof(v.match.name));
                 ivtv_call_hw(itv, IVTV_HW_SAA711X, core, g_chip_ident, &v);
                 if (v.ident == V4L2_IDENT_SAA7114) {
                         itv->hw_flags |= IVTV_HW_SAA7114;
                         /* VBI is not yet supported by the saa7114 driver. */
                         itv->v4l2_cap &= ~(V4L2_CAP_SLICED_VBI_CAPTURE|V4L2_CAP_VBI_CAPTURE);
-                }
-                else {
+                } else {
                         itv->hw_flags |= IVTV_HW_SAA7115;
                 }
                 itv->vbi.raw_decoder_line_size = 1443;
diff --git a/drivers/media/video/ivtv/ivtv-ioctl.c b/drivers/media/video/ivtv/ivtv-ioctl.c
index 1f6ca93b9840..f6b3ef6e691b 100644
--- a/drivers/media/video/ivtv/ivtv-ioctl.c
+++ b/drivers/media/video/ivtv/ivtv-ioctl.c
@@ -674,19 +674,19 @@ static int ivtv_s_fmt_vid_out_overlay(struct file *file, void *fh, struct v4l2_f
         return ret;
 }
 
-static int ivtv_g_chip_ident(struct file *file, void *fh, struct v4l2_chip_ident *chip)
+static int ivtv_g_chip_ident(struct file *file, void *fh, struct v4l2_dbg_chip_ident *chip)
 {
         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 
         chip->ident = V4L2_IDENT_NONE;
         chip->revision = 0;
-        if (chip->match_type == V4L2_CHIP_MATCH_HOST) {
-                if (v4l2_chip_match_host(chip->match_type, chip->match_chip))
+        if (chip->match.type == V4L2_CHIP_MATCH_HOST) {
+                if (v4l2_chip_match_host(&chip->match))
                         chip->ident = itv->has_cx23415 ? V4L2_IDENT_CX23415 : V4L2_IDENT_CX23416;
                 return 0;
         }
-        if (chip->match_type != V4L2_CHIP_MATCH_I2C_DRIVER &&
-            chip->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
+        if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
+            chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
                 return -EINVAL;
         /* TODO: is this correct? */
         return ivtv_call_all_err(itv, core, g_chip_ident, chip);
@@ -695,7 +695,7 @@ static int ivtv_g_chip_ident(struct file *file, void *fh, struct v4l2_chip_ident
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int ivtv_itvc(struct ivtv *itv, unsigned int cmd, void *arg)
 {
-        struct v4l2_register *regs = arg;
+        struct v4l2_dbg_register *regs = arg;
         volatile u8 __iomem *reg_start;
 
         if (!capable(CAP_SYS_ADMIN))
@@ -710,6 +710,7 @@ static int ivtv_itvc(struct ivtv *itv, unsigned int cmd, void *arg)
         else
                 return -EINVAL;
 
+        regs->size = 4;
         if (cmd == VIDIOC_DBG_G_REGISTER)
                 regs->val = readl(regs->reg + reg_start);
         else
@@ -717,11 +718,11 @@ static int ivtv_itvc(struct ivtv *itv, unsigned int cmd, void *arg)
         return 0;
 }
 
-static int ivtv_g_register(struct file *file, void *fh, struct v4l2_register *reg)
+static int ivtv_g_register(struct file *file, void *fh, struct v4l2_dbg_register *reg)
 {
         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 
-        if (v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (v4l2_chip_match_host(&reg->match))
                 return ivtv_itvc(itv, VIDIOC_DBG_G_REGISTER, reg);
         /* TODO: subdev errors should not be ignored, this should become a
            subdev helper function. */
@@ -729,11 +730,11 @@ static int ivtv_g_register(struct file *file, void *fh, struct v4l2_register *re
         return 0;
 }
 
-static int ivtv_s_register(struct file *file, void *fh, struct v4l2_register *reg)
+static int ivtv_s_register(struct file *file, void *fh, struct v4l2_dbg_register *reg)
 {
         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 
-        if (v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (v4l2_chip_match_host(&reg->match))
                 return ivtv_itvc(itv, VIDIOC_DBG_S_REGISTER, reg);
         /* TODO: subdev errors should not be ignored, this should become a
            subdev helper function. */
diff --git a/drivers/media/video/m52790.c b/drivers/media/video/m52790.c
index 07be14a9fe7b..de397ef57b44 100644
--- a/drivers/media/video/m52790.c
+++ b/drivers/media/video/m52790.c
@@ -80,29 +80,28 @@ static int m52790_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *r
 }
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-static int m52790_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int m52790_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct m52790_state *state = to_state(sd);
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
         if (reg->reg != 0)
                 return -EINVAL;
+        reg->size = 1;
         reg->val = state->input | state->output;
         return 0;
 }
 
-static int m52790_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int m52790_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct m52790_state *state = to_state(sd);
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
@@ -115,7 +114,7 @@ static int m52790_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
 }
 #endif
 
-static int m52790_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int m52790_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
diff --git a/drivers/media/video/msp3400-driver.c b/drivers/media/video/msp3400-driver.c
index b8577ade4050..4d7a91852117 100644
--- a/drivers/media/video/msp3400-driver.c
+++ b/drivers/media/video/msp3400-driver.c
@@ -733,7 +733,7 @@ static int msp_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
         return 0;
 }
 
-static int msp_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int msp_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct msp_state *state = to_state(sd);
         struct i2c_client *client = v4l2_get_subdevdata(sd);
diff --git a/drivers/media/video/mt9m001.c b/drivers/media/video/mt9m001.c
index 1a1a12453672..c1bf75ef2741 100644
--- a/drivers/media/video/mt9m001.c
+++ b/drivers/media/video/mt9m001.c
@@ -343,14 +343,14 @@ static int mt9m001_try_fmt(struct soc_camera_device *icd,
 }
 
 static int mt9m001_get_chip_id(struct soc_camera_device *icd,
-                               struct v4l2_chip_ident *id)
+                               struct v4l2_dbg_chip_ident *id)
 {
         struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
 
-        if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
+        if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
                 return -EINVAL;
 
-        if (id->match_chip != mt9m001->client->addr)
+        if (id->match.addr != mt9m001->client->addr)
                 return -ENODEV;
 
         id->ident       = mt9m001->model;
@@ -361,16 +361,17 @@ static int mt9m001_get_chip_id(struct soc_camera_device *icd,
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int mt9m001_get_register(struct soc_camera_device *icd,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
 
-        if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+        if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
                 return -EINVAL;
 
-        if (reg->match_chip != mt9m001->client->addr)
+        if (reg->match.addr != mt9m001->client->addr)
                 return -ENODEV;
 
+        reg->size = 2;
         reg->val = reg_read(icd, reg->reg);
 
         if (reg->val > 0xffff)
@@ -380,14 +381,14 @@ static int mt9m001_get_register(struct soc_camera_device *icd,
 }
 
 static int mt9m001_set_register(struct soc_camera_device *icd,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
 
-        if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+        if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
                 return -EINVAL;
 
-        if (reg->match_chip != mt9m001->client->addr)
+        if (reg->match.addr != mt9m001->client->addr)
                 return -ENODEV;
 
         if (reg_write(icd, reg->reg, reg->val) < 0)
diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c
index c89ea41fe259..5b8e20979cce 100644
--- a/drivers/media/video/mt9m111.c
+++ b/drivers/media/video/mt9m111.c
@@ -514,14 +514,14 @@ static int mt9m111_try_fmt(struct soc_camera_device *icd,
 }
 
 static int mt9m111_get_chip_id(struct soc_camera_device *icd,
-                               struct v4l2_chip_ident *id)
+                               struct v4l2_dbg_chip_ident *id)
 {
         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 
-        if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
+        if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
                 return -EINVAL;
 
-        if (id->match_chip != mt9m111->client->addr)
+        if (id->match.addr != mt9m111->client->addr)
                 return -ENODEV;
 
         id->ident       = mt9m111->model;
@@ -532,18 +532,19 @@ static int mt9m111_get_chip_id(struct soc_camera_device *icd,
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int mt9m111_get_register(struct soc_camera_device *icd,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         int val;
 
         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 
-        if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
+        if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
                 return -EINVAL;
-        if (reg->match_chip != mt9m111->client->addr)
+        if (reg->match.addr != mt9m111->client->addr)
                 return -ENODEV;
 
         val = mt9m111_reg_read(icd, reg->reg);
+        reg->size = 2;
         reg->val = (u64)val;
 
         if (reg->val > 0xffff)
@@ -553,14 +554,14 @@ static int mt9m111_get_register(struct soc_camera_device *icd,
 }
 
 static int mt9m111_set_register(struct soc_camera_device *icd,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 
-        if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
+        if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
                 return -EINVAL;
 
-        if (reg->match_chip != mt9m111->client->addr)
+        if (reg->match.addr != mt9m111->client->addr)
                 return -ENODEV;
 
         if (mt9m111_reg_write(icd, reg->reg, reg->val) < 0)
diff --git a/drivers/media/video/mt9t031.c b/drivers/media/video/mt9t031.c
index 1a9d53966d06..349d8e365530 100644
--- a/drivers/media/video/mt9t031.c
+++ b/drivers/media/video/mt9t031.c
@@ -326,14 +326,14 @@ static int mt9t031_try_fmt(struct soc_camera_device *icd,
 }
 
 static int mt9t031_get_chip_id(struct soc_camera_device *icd,
-                               struct v4l2_chip_ident *id)
+                               struct v4l2_dbg_chip_ident *id)
 {
         struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
 
-        if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
+        if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
                 return -EINVAL;
 
-        if (id->match_chip != mt9t031->client->addr)
+        if (id->match.addr != mt9t031->client->addr)
                 return -ENODEV;
 
         id->ident       = mt9t031->model;
@@ -344,14 +344,14 @@ static int mt9t031_get_chip_id(struct soc_camera_device *icd,
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int mt9t031_get_register(struct soc_camera_device *icd,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
 
-        if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+        if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
                 return -EINVAL;
 
-        if (reg->match_chip != mt9t031->client->addr)
+        if (reg->match.addr != mt9t031->client->addr)
                 return -ENODEV;
 
         reg->val = reg_read(icd, reg->reg);
@@ -363,14 +363,14 @@ static int mt9t031_get_register(struct soc_camera_device *icd,
 }
 
 static int mt9t031_set_register(struct soc_camera_device *icd,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
 
-        if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+        if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
                 return -EINVAL;
 
-        if (reg->match_chip != mt9t031->client->addr)
+        if (reg->match.addr != mt9t031->client->addr)
                 return -ENODEV;
 
         if (reg_write(icd, reg->reg, reg->val) < 0)
diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c
index 14a5f9c21ffa..b04c8cb1644d 100644
--- a/drivers/media/video/mt9v022.c
+++ b/drivers/media/video/mt9v022.c
@@ -422,14 +422,14 @@ static int mt9v022_try_fmt(struct soc_camera_device *icd,
 }
 
 static int mt9v022_get_chip_id(struct soc_camera_device *icd,
-                               struct v4l2_chip_ident *id)
+                               struct v4l2_dbg_chip_ident *id)
 {
         struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
 
-        if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
+        if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
                 return -EINVAL;
 
-        if (id->match_chip != mt9v022->client->addr)
+        if (id->match.addr != mt9v022->client->addr)
                 return -ENODEV;
 
         id->ident       = mt9v022->model;
@@ -440,16 +440,17 @@ static int mt9v022_get_chip_id(struct soc_camera_device *icd,
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int mt9v022_get_register(struct soc_camera_device *icd,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
 
-        if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+        if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
                 return -EINVAL;
 
-        if (reg->match_chip != mt9v022->client->addr)
+        if (reg->match.addr != mt9v022->client->addr)
                 return -ENODEV;
 
+        reg->size = 2;
         reg->val = reg_read(icd, reg->reg);
 
         if (reg->val > 0xffff)
@@ -459,14 +460,14 @@ static int mt9v022_get_register(struct soc_camera_device *icd,
 }
 
 static int mt9v022_set_register(struct soc_camera_device *icd,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
 
-        if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+        if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
                 return -EINVAL;
 
-        if (reg->match_chip != mt9v022->client->addr)
+        if (reg->match.addr != mt9v022->client->addr)
                 return -ENODEV;
 
         if (reg_write(icd, reg->reg, reg->val) < 0)
diff --git a/drivers/media/video/ov7670.c b/drivers/media/video/ov7670.c
index ea032f5f2f41..ca26b0c50cf2 100644
--- a/drivers/media/video/ov7670.c
+++ b/drivers/media/video/ov7670.c
@@ -1310,7 +1310,7 @@ static int ov7670_command(struct i2c_client *client, unsigned int cmd,
                 void *arg)
 {
         switch (cmd) {
-        case VIDIOC_G_CHIP_IDENT:
+        case VIDIOC_DBG_G_CHIP_IDENT:
                 return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_OV7670, 0);
 
         case VIDIOC_INT_RESET:
diff --git a/drivers/media/video/ov772x.c b/drivers/media/video/ov772x.c
index 54b736fcc07a..3c9e0ba974e9 100644
--- a/drivers/media/video/ov772x.c
+++ b/drivers/media/video/ov772x.c
@@ -724,7 +724,7 @@ static unsigned long ov772x_query_bus_param(struct soc_camera_device *icd)
 }
 
 static int ov772x_get_chip_id(struct soc_camera_device *icd,
-                              struct v4l2_chip_ident   *id)
+                              struct v4l2_dbg_chip_ident   *id)
 {
         struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
 
@@ -736,11 +736,12 @@ static int ov772x_get_chip_id(struct soc_camera_device *icd,
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int ov772x_get_register(struct soc_camera_device *icd,
-                               struct v4l2_register *reg)
+                               struct v4l2_dbg_register *reg)
 {
         struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
         int                 ret;
 
+        reg->size = 1;
         if (reg->reg > 0xff)
                 return -EINVAL;
 
@@ -754,7 +755,7 @@ static int ov772x_get_register(struct soc_camera_device *icd,
 }
 
 static int ov772x_set_register(struct soc_camera_device *icd,
-                               struct v4l2_register *reg)
+                               struct v4l2_dbg_register *reg)
 {
         struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
 
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 4358079f1966..8fb92ac78c7b 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -4732,26 +4732,25 @@ static int pvr2_hdw_get_eeprom_addr(struct pvr2_hdw *hdw)
 
 
 int pvr2_hdw_register_access(struct pvr2_hdw *hdw,
-                             u32 match_type, u32 match_chip, u64 reg_id,
-                             int setFl,u64 *val_ptr)
+                             struct v4l2_dbg_match *match, u64 reg_id,
+                             int setFl, u64 *val_ptr)
 {
 #ifdef CONFIG_VIDEO_ADV_DEBUG
         struct pvr2_i2c_client *cp;
-        struct v4l2_register req;
+        struct v4l2_dbg_register req;
         int stat = 0;
         int okFl = 0;
 
         if (!capable(CAP_SYS_ADMIN)) return -EPERM;
 
-        req.match_type = match_type;
-        req.match_chip = match_chip;
+        req.match = *match;
         req.reg = reg_id;
         if (setFl) req.val = *val_ptr;
         mutex_lock(&hdw->i2c_list_lock); do {
                 list_for_each_entry(cp, &hdw->i2c_clients, list) {
                         if (!v4l2_chip_match_i2c_client(
                                     cp->client,
-                                    req.match_type, req.match_chip)) {
+                                    &req.match)) {
                                 continue;
                         }
                         stat = pvr2_i2c_client_cmd(
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.h b/drivers/media/video/pvrusb2/pvrusb2-hdw.h
index 49482d1f2b28..1b4fec337c6b 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.h
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.h
@@ -242,8 +242,8 @@ void pvr2_hdw_v4l_store_minor_number(struct pvr2_hdw *,
    setFl   - true to set the register, false to read it
    val_ptr - storage location for source / result. */
 int pvr2_hdw_register_access(struct pvr2_hdw *,
-                             u32 match_type, u32 match_chip,u64 reg_id,
-                             int setFl,u64 *val_ptr);
+                             struct v4l2_dbg_match *match, u64 reg_id,
+                             int setFl, u64 *val_ptr);
 
 /* The following entry points are all lower level things you normally don't
    want to worry about. */
diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index b9aedceb2c44..878fd52a73b3 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
@@ -851,11 +851,11 @@ static long pvr2_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
         case VIDIOC_DBG_G_REGISTER:
         {
                 u64 val;
-                struct v4l2_register *req = (struct v4l2_register *)arg;
+                struct v4l2_dbg_register *req = (struct v4l2_dbg_register *)arg;
                 if (cmd == VIDIOC_DBG_S_REGISTER) val = req->val;
                 ret = pvr2_hdw_register_access(
-                        hdw,req->match_type,req->match_chip,req->reg,
-                        cmd == VIDIOC_DBG_S_REGISTER,&val);
+                        hdw, &req->match, req->reg,
+                        cmd == VIDIOC_DBG_S_REGISTER, &val);
                 if (cmd == VIDIOC_DBG_G_REGISTER) req->val = val;
                 break;
         }
diff --git a/drivers/media/video/saa7115.c b/drivers/media/video/saa7115.c
index 22708ecdf1bb..46c796c3fec8 100644
--- a/drivers/media/video/saa7115.c
+++ b/drivers/media/video/saa7115.c
@@ -1371,25 +1371,24 @@ static int saa711x_g_vbi_data(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_dat
 }
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-static int saa711x_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int saa711x_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
         reg->val = saa711x_read(sd, reg->reg & 0xff);
+        reg->size = 1;
         return 0;
 }
 
-static int saa711x_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int saa711x_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
@@ -1398,7 +1397,7 @@ static int saa711x_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
 }
 #endif
 
-static int saa711x_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int saa711x_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct saa711x_state *state = to_state(sd);
         struct i2c_client *client = v4l2_get_subdevdata(sd);
diff --git a/drivers/media/video/saa7127.c b/drivers/media/video/saa7127.c
index bfc85654795e..d6848f7a503b 100644
--- a/drivers/media/video/saa7127.c
+++ b/drivers/media/video/saa7127.c
@@ -623,25 +623,24 @@ static int saa7127_s_vbi_data(struct v4l2_subdev *sd, const struct v4l2_sliced_v
 }
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-static int saa7127_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int saa7127_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
         reg->val = saa7127_read(sd, reg->reg & 0xff);
+        reg->size = 1;
         return 0;
 }
 
-static int saa7127_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int saa7127_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
@@ -650,7 +649,7 @@ static int saa7127_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
 }
 #endif
 
-static int saa7127_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int saa7127_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct saa7127_state *state = to_state(sd);
         struct i2c_client *client = v4l2_get_subdevdata(sd);
diff --git a/drivers/media/video/saa7134/saa6752hs.c b/drivers/media/video/saa7134/saa6752hs.c
index 1fb6eccdade3..1fee6e84a512 100644
--- a/drivers/media/video/saa7134/saa6752hs.c
+++ b/drivers/media/video/saa7134/saa6752hs.c
@@ -838,7 +838,7 @@ saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg)
                 h->standard = *((v4l2_std_id *) arg);
                 break;
 
-        case VIDIOC_G_CHIP_IDENT:
+        case VIDIOC_DBG_G_CHIP_IDENT:
                 return v4l2_chip_ident_i2c_client(client,
                                 arg, h->chip, h->revision);
 
diff --git a/drivers/media/video/saa7134/saa7134-empress.c b/drivers/media/video/saa7134/saa7134-empress.c
index 3beba480137f..c9d8beb87a60 100644
--- a/drivers/media/video/saa7134/saa7134-empress.c
+++ b/drivers/media/video/saa7134/saa7134-empress.c
@@ -405,7 +405,7 @@ static int empress_querymenu(struct file *file, void *priv,
 }
 
 static int empress_g_chip_ident(struct file *file, void *fh,
-               struct v4l2_chip_ident *chip)
+               struct v4l2_dbg_chip_ident *chip)
 {
         struct saa7134_dev *dev = file->private_data;
 
@@ -413,12 +413,12 @@ static int empress_g_chip_ident(struct file *file, void *fh,
         chip->revision = 0;
         if (dev->mpeg_i2c_client == NULL)
                 return -EINVAL;
-        if (chip->match_type == V4L2_CHIP_MATCH_I2C_DRIVER &&
-            chip->match_chip == I2C_DRIVERID_SAA6752HS)
-                return saa7134_i2c_call_saa6752(dev, VIDIOC_G_CHIP_IDENT, chip);
-        if (chip->match_type == V4L2_CHIP_MATCH_I2C_ADDR &&
-            chip->match_chip == dev->mpeg_i2c_client->addr)
-                return saa7134_i2c_call_saa6752(dev, VIDIOC_G_CHIP_IDENT, chip);
+        if (chip->match.type == V4L2_CHIP_MATCH_I2C_DRIVER &&
+            !strcmp(chip->match.name, "saa6752hs"))
+                return saa7134_i2c_call_saa6752(dev, VIDIOC_DBG_G_CHIP_IDENT, chip);
+        if (chip->match.type == V4L2_CHIP_MATCH_I2C_ADDR &&
+            chip->match.addr == dev->mpeg_i2c_client->addr)
+                return saa7134_i2c_call_saa6752(dev, VIDIOC_DBG_G_CHIP_IDENT, chip);
         return -EINVAL;
 }
 
diff --git a/drivers/media/video/saa7134/saa7134-video.c b/drivers/media/video/saa7134/saa7134-video.c
index 6b2ab57538ee..a1f7e351f572 100644
--- a/drivers/media/video/saa7134/saa7134-video.c
+++ b/drivers/media/video/saa7134/saa7134-video.c
@@ -2247,24 +2247,25 @@ static int saa7134_g_parm(struct file *file, void *fh,
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int vidioc_g_register (struct file *file, void *priv,
-                              struct v4l2_register *reg)
+                              struct v4l2_dbg_register *reg)
 {
         struct saa7134_fh *fh = priv;
         struct saa7134_dev *dev = fh->dev;
 
-        if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_host(&reg->match))
                 return -EINVAL;
         reg->val = saa_readb(reg->reg);
+        reg->size = 1;
         return 0;
 }
 
 static int vidioc_s_register (struct file *file, void *priv,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct saa7134_fh *fh = priv;
         struct saa7134_dev *dev = fh->dev;
 
-        if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_host(&reg->match))
                 return -EINVAL;
         saa_writeb(reg->reg&0xffffff, reg->val);
         return 0;
diff --git a/drivers/media/video/saa717x.c b/drivers/media/video/saa717x.c
index 9befca65905e..454ad1dd7507 100644
--- a/drivers/media/video/saa717x.c
+++ b/drivers/media/video/saa717x.c
@@ -1171,25 +1171,26 @@ static int saa717x_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
 }
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-static int saa717x_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int saa717x_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
         reg->val = saa717x_read(sd, reg->reg);
+        reg->size = 1;
         return 0;
 }
 
-static int saa717x_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int saa717x_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
         u16 addr = reg->reg & 0xffff;
         u8 val = reg->val & 0xff;
 
-        if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c
index 9986e02bcf1a..fcb05f06de8f 100644
--- a/drivers/media/video/soc_camera.c
+++ b/drivers/media/video/soc_camera.c
@@ -699,7 +699,7 @@ static int soc_camera_s_crop(struct file *file, void *fh,
 }
 
 static int soc_camera_g_chip_ident(struct file *file, void *fh,
-                                   struct v4l2_chip_ident *id)
+                                   struct v4l2_dbg_chip_ident *id)
 {
         struct soc_camera_file *icf = file->private_data;
         struct soc_camera_device *icd = icf->icd;
@@ -712,7 +712,7 @@ static int soc_camera_g_chip_ident(struct file *file, void *fh,
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int soc_camera_g_register(struct file *file, void *fh,
-                                 struct v4l2_register *reg)
+                                 struct v4l2_dbg_register *reg)
 {
         struct soc_camera_file *icf = file->private_data;
         struct soc_camera_device *icd = icf->icd;
@@ -724,7 +724,7 @@ static int soc_camera_g_register(struct file *file, void *fh,
 }
 
 static int soc_camera_s_register(struct file *file, void *fh,
-                                 struct v4l2_register *reg)
+                                 struct v4l2_dbg_register *reg)
 {
         struct soc_camera_file *icf = file->private_data;
         struct soc_camera_device *icd = icf->icd;
diff --git a/drivers/media/video/tvaudio.c b/drivers/media/video/tvaudio.c
index d0c794da735b..5aeccb301cea 100644
--- a/drivers/media/video/tvaudio.c
+++ b/drivers/media/video/tvaudio.c
@@ -1762,7 +1762,7 @@ static int tvaudio_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *fr
         return 0;
 }
 
-static int tvaudio_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int tvaudio_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
diff --git a/drivers/media/video/tvp5150.c b/drivers/media/video/tvp5150.c
index a388a9f0cb18..2cd64ef27b95 100644
--- a/drivers/media/video/tvp5150.c
+++ b/drivers/media/video/tvp5150.c
@@ -963,7 +963,7 @@ static int tvp5150_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
 
 
 static int tvp5150_g_chip_ident(struct v4l2_subdev *sd,
-                                struct v4l2_chip_ident *chip)
+                                struct v4l2_dbg_chip_ident *chip)
 {
         int rev;
         struct i2c_client *client = v4l2_get_subdevdata(sd);
@@ -977,25 +977,24 @@ static int tvp5150_g_chip_ident(struct v4l2_subdev *sd,
 
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-static int tvp5150_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int tvp5150_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
         reg->val = tvp5150_read(sd, reg->reg & 0xff);
+        reg->size = 1;
         return 0;
 }
 
-static int tvp5150_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int tvp5150_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
diff --git a/drivers/media/video/tw9910.c b/drivers/media/video/tw9910.c
index d5cdc4be1a35..52c0357faa5d 100644
--- a/drivers/media/video/tw9910.c
+++ b/drivers/media/video/tw9910.c
@@ -575,7 +575,7 @@ static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
 }
 
 static int tw9910_get_chip_id(struct soc_camera_device *icd,
-                              struct v4l2_chip_ident *id)
+                              struct v4l2_dbg_chip_ident *id)
 {
         id->ident = V4L2_IDENT_TW9910;
         id->revision = 0;
@@ -606,7 +606,7 @@ static int tw9910_enum_input(struct soc_camera_device *icd,
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int tw9910_get_register(struct soc_camera_device *icd,
-                               struct v4l2_register *reg)
+                               struct v4l2_dbg_register *reg)
 {
         struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
         int ret;
@@ -627,7 +627,7 @@ static int tw9910_get_register(struct soc_camera_device *icd,
 }
 
 static int tw9910_set_register(struct soc_camera_device *icd,
-                               struct v4l2_register *reg)
+                               struct v4l2_dbg_register *reg)
 {
         struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
 
diff --git a/drivers/media/video/upd64031a.c b/drivers/media/video/upd64031a.c
index 7a609a3a6dbe..4f16effb530f 100644
--- a/drivers/media/video/upd64031a.c
+++ b/drivers/media/video/upd64031a.c
@@ -147,7 +147,7 @@ static int upd64031a_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing
         return upd64031a_s_frequency(sd, NULL);
 }
 
-static int upd64031a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int upd64031a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
@@ -162,25 +162,24 @@ static int upd64031a_log_status(struct v4l2_subdev *sd)
 }
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-static int upd64031a_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int upd64031a_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
         reg->val = upd64031a_read(sd, reg->reg & 0xff);
+        reg->size = 1;
         return 0;
 }
 
-static int upd64031a_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int upd64031a_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
diff --git a/drivers/media/video/upd64083.c b/drivers/media/video/upd64083.c
index 58412cb9c01a..4b712f69d1b7 100644
--- a/drivers/media/video/upd64083.c
+++ b/drivers/media/video/upd64083.c
@@ -120,25 +120,24 @@ static int upd64083_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing
 }
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-static int upd64083_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int upd64083_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
         reg->val = upd64083_read(sd, reg->reg & 0xff);
+        reg->size = 1;
         return 0;
 }
 
-static int upd64083_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
+static int upd64083_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-        if (!v4l2_chip_match_i2c_client(client,
-                                reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_i2c_client(client, &reg->match))
                 return -EINVAL;
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
@@ -147,7 +146,7 @@ static int upd64083_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg
 }
 #endif
 
-static int upd64083_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int upd64083_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
diff --git a/drivers/media/video/usbvision/usbvision-video.c b/drivers/media/video/usbvision/usbvision-video.c
index 7c61c6d5cede..2be5e47ed081 100644
--- a/drivers/media/video/usbvision/usbvision-video.c
+++ b/drivers/media/video/usbvision/usbvision-video.c
@@ -477,12 +477,12 @@ static int usbvision_v4l2_close(struct file *file)
  */
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int vidioc_g_register (struct file *file, void *priv,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct usb_usbvision *usbvision = video_drvdata(file);
         int errCode;
 
-        if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_host(&reg->match))
                 return -EINVAL;
         /* NT100x has a 8-bit register space */
         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
@@ -492,16 +492,17 @@ static int vidioc_g_register (struct file *file, void *priv,
                 return errCode;
         }
         reg->val = errCode;
+        reg->size = 1;
         return 0;
 }
 
 static int vidioc_s_register (struct file *file, void *priv,
-                                struct v4l2_register *reg)
+                                struct v4l2_dbg_register *reg)
 {
         struct usb_usbvision *usbvision = video_drvdata(file);
         int errCode;
 
-        if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
+        if (!v4l2_chip_match_host(&reg->match))
                 return -EINVAL;
         /* NT100x has a 8-bit register space */
         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index c676b0b0f708..b8f2be8d5c0e 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -797,11 +797,11 @@ u32 v4l2_ctrl_next(const u32 * const * ctrl_classes, u32 id)
 }
 EXPORT_SYMBOL(v4l2_ctrl_next);
 
-int v4l2_chip_match_host(u32 match_type, u32 match_chip)
+int v4l2_chip_match_host(const struct v4l2_dbg_match *match)
 {
-        switch (match_type) {
+        switch (match->type) {
         case V4L2_CHIP_MATCH_HOST:
-                return match_chip == 0;
+                return match->addr == 0;
         default:
                 return 0;
         }
@@ -809,23 +809,34 @@ int v4l2_chip_match_host(u32 match_type, u32 match_chip)
 EXPORT_SYMBOL(v4l2_chip_match_host);
 
 #if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
-int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 match_type, u32 match_chip)
+int v4l2_chip_match_i2c_client(struct i2c_client *c, const struct v4l2_dbg_match *match)
 {
-        switch (match_type) {
+        int len;
+
+        if (c == NULL || match == NULL)
+                return 0;
+
+        switch (match->type) {
         case V4L2_CHIP_MATCH_I2C_DRIVER:
-                return (c != NULL && c->driver != NULL && c->driver->id == match_chip);
+                if (c->driver == NULL || c->driver->driver.name == NULL)
+                        return 0;
+                len = strlen(c->driver->driver.name);
+                /* legacy drivers have a ' suffix, don't try to match that */
+                if (len && c->driver->driver.name[len - 1] == '\'')
+                        len--;
+                return len && !strncmp(c->driver->driver.name, match->name, len);
         case V4L2_CHIP_MATCH_I2C_ADDR:
-                return (c != NULL && c->addr == match_chip);
+                return c->addr == match->addr;
         default:
                 return 0;
         }
 }
 EXPORT_SYMBOL(v4l2_chip_match_i2c_client);
 
-int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_chip_ident *chip,
+int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_dbg_chip_ident *chip,
                 u32 ident, u32 revision)
 {
-        if (!v4l2_chip_match_i2c_client(c, chip->match_type, chip->match_chip))
+        if (!v4l2_chip_match_i2c_client(c, &chip->match))
                 return 0;
         if (chip->ident == V4L2_IDENT_NONE) {
                 chip->ident = ident;
diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c
index ec81b9737bd7..110376be5d2b 100644
--- a/drivers/media/video/v4l2-compat-ioctl32.c
+++ b/drivers/media/video/v4l2-compat-ioctl32.c
@@ -1046,7 +1046,8 @@ long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
         case VIDIOC_TRY_ENCODER_CMD:
         case VIDIOC_DBG_S_REGISTER:
         case VIDIOC_DBG_G_REGISTER:
-        case VIDIOC_G_CHIP_IDENT:
+        case VIDIOC_DBG_G_CHIP_IDENT:
+        case VIDIOC_G_CHIP_IDENT_OLD:
         case VIDIOC_S_HW_FREQ_SEEK:
                 ret = do_video_ioctl(file, cmd, arg);
                 break;
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c
index 8f629ef5b9ec..52d687b165e0 100644
--- a/drivers/media/video/v4l2-ioctl.c
+++ b/drivers/media/video/v4l2-ioctl.c
@@ -266,7 +266,7 @@ static const char *v4l2_ioctls[] = {
         [_IOC_NR(VIDIOC_DBG_S_REGISTER)]   = "VIDIOC_DBG_S_REGISTER",
         [_IOC_NR(VIDIOC_DBG_G_REGISTER)]   = "VIDIOC_DBG_G_REGISTER",
 
-        [_IOC_NR(VIDIOC_G_CHIP_IDENT)]     = "VIDIOC_G_CHIP_IDENT",
+        [_IOC_NR(VIDIOC_DBG_G_CHIP_IDENT)] = "VIDIOC_DBG_G_CHIP_IDENT",
         [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)]   = "VIDIOC_S_HW_FREQ_SEEK",
 #endif
 };
@@ -1720,7 +1720,7 @@ static long __video_do_ioctl(struct file *file,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
         case VIDIOC_DBG_G_REGISTER:
         {
-                struct v4l2_register *p = arg;
+                struct v4l2_dbg_register *p = arg;
 
                 if (!capable(CAP_SYS_ADMIN))
                         ret = -EPERM;
@@ -1730,7 +1730,7 @@ static long __video_do_ioctl(struct file *file,
         }
         case VIDIOC_DBG_S_REGISTER:
         {
-                struct v4l2_register *p = arg;
+                struct v4l2_dbg_register *p = arg;
 
                 if (!capable(CAP_SYS_ADMIN))
                         ret = -EPERM;
@@ -1739,9 +1739,9 @@ static long __video_do_ioctl(struct file *file,
                 break;
         }
 #endif
-        case VIDIOC_G_CHIP_IDENT:
+        case VIDIOC_DBG_G_CHIP_IDENT:
         {
-                struct v4l2_chip_ident *p = arg;
+                struct v4l2_dbg_chip_ident *p = arg;
 
                 if (!ops->vidioc_g_chip_ident)
                         break;
@@ -1750,6 +1750,11 @@ static long __video_do_ioctl(struct file *file,
                         dbgarg(cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision);
                 break;
         }
+        case VIDIOC_G_CHIP_IDENT_OLD:
+                printk(KERN_ERR "VIDIOC_G_CHIP_IDENT has been deprecated and will disappear in 2.6.30.\n");
+                printk(KERN_ERR "It is a debugging ioctl and must not be used in applications!\n");
+                return -EINVAL;
+
         case VIDIOC_S_HW_FREQ_SEEK:
         {
                 struct v4l2_hw_freq_seek *p = arg;
diff --git a/drivers/media/video/v4l2-subdev.c b/drivers/media/video/v4l2-subdev.c
index e3612f29d0df..fbe9cc0d433a 100644
--- a/drivers/media/video/v4l2-subdev.c
+++ b/drivers/media/video/v4l2-subdev.c
@@ -37,7 +37,7 @@ int v4l2_subdev_command(struct v4l2_subdev *sd, unsigned cmd, void *arg)
                 return v4l2_subdev_call(sd, core, queryctrl, arg);
         case VIDIOC_LOG_STATUS:
                 return v4l2_subdev_call(sd, core, log_status);
-        case VIDIOC_G_CHIP_IDENT:
+        case VIDIOC_DBG_G_CHIP_IDENT:
                 return v4l2_subdev_call(sd, core, g_chip_ident, arg);
         case VIDIOC_INT_S_STANDBY:
                 return v4l2_subdev_call(sd, core, s_standby, arg ? (*(u32 *)arg) : 0);
diff --git a/drivers/media/video/vp27smpx.c b/drivers/media/video/vp27smpx.c
index f72b859486ad..5d73f66d9f55 100644
--- a/drivers/media/video/vp27smpx.c
+++ b/drivers/media/video/vp27smpx.c
@@ -113,7 +113,7 @@ static int vp27smpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
         return 0;
 }
 
-static int vp27smpx_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int vp27smpx_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
diff --git a/drivers/media/video/wm8739.c b/drivers/media/video/wm8739.c
index 12a31e7a5f6d..f2864d5cd180 100644
--- a/drivers/media/video/wm8739.c
+++ b/drivers/media/video/wm8739.c
@@ -233,7 +233,7 @@ static int wm8739_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
         return -EINVAL;
 }
 
-static int wm8739_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int wm8739_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
diff --git a/drivers/media/video/wm8775.c b/drivers/media/video/wm8775.c
index d0220b0ec0bc..53fcd42843e0 100644
--- a/drivers/media/video/wm8775.c
+++ b/drivers/media/video/wm8775.c
@@ -130,7 +130,7 @@ static int wm8775_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
         return 0;
 }
 
-static int wm8775_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
+static int wm8775_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
 {
         struct i2c_client *client = v4l2_get_subdevdata(sd);
 
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 1f126e30766c..5571dbe1c0ad 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1370,25 +1370,41 @@ struct v4l2_streamparm {
 /*
  *      A D V A N C E D   D E B U G G I N G
  *
- *      NOTE: EXPERIMENTAL API
+ *      NOTE: EXPERIMENTAL API, NEVER RELY ON THIS IN APPLICATIONS!
+ *      FOR DEBUGGING, TESTING AND INTERNAL USE ONLY!
  */
 
 /* VIDIOC_DBG_G_REGISTER and VIDIOC_DBG_S_REGISTER */
 
 #define V4L2_CHIP_MATCH_HOST       0  /* Match against chip ID on host (0 for the host) */
-#define V4L2_CHIP_MATCH_I2C_DRIVER 1  /* Match against I2C driver ID */
+#define V4L2_CHIP_MATCH_I2C_DRIVER 1  /* Match against I2C driver name */
 #define V4L2_CHIP_MATCH_I2C_ADDR   2  /* Match against I2C 7-bit address */
 #define V4L2_CHIP_MATCH_AC97       3  /* Match against anciliary AC97 chip */
 
-struct v4l2_register {
-        __u32 match_type; /* Match type */
-        __u32 match_chip; /* Match this chip, meaning determined by match_type */
+struct v4l2_dbg_match {
+        __u32 type; /* Match type */
+        union {     /* Match this chip, meaning determined by type */
+                __u32 addr;
+                char name[32];
+        };
+} __attribute__ ((packed));
+
+struct v4l2_dbg_register {
+        struct v4l2_dbg_match match;
+        __u32 size;     /* register size in bytes */
         __u64 reg;
         __u64 val;
-};
+} __attribute__ ((packed));
+
+/* VIDIOC_DBG_G_CHIP_IDENT */
+struct v4l2_dbg_chip_ident {
+        struct v4l2_dbg_match match;
+        __u32 ident;       /* chip identifier as specified in <media/v4l2-chip-ident.h> */
+        __u32 revision;    /* chip revision, chip specific */
+} __attribute__ ((packed));
 
-/* VIDIOC_G_CHIP_IDENT */
-struct v4l2_chip_ident {
+/* VIDIOC_G_CHIP_IDENT_OLD: Deprecated, do not use */
+struct v4l2_chip_ident_old {
         __u32 match_type;  /* Match type */
         __u32 match_chip;  /* Match this chip, meaning determined by match_type */
         __u32 ident;       /* chip identifier as specified in <media/v4l2-chip-ident.h> */
@@ -1460,13 +1476,22 @@ struct v4l2_chip_ident {
 #define VIDIOC_G_ENC_INDEX       _IOR('V', 76, struct v4l2_enc_idx)
 #define VIDIOC_ENCODER_CMD      _IOWR('V', 77, struct v4l2_encoder_cmd)
 #define VIDIOC_TRY_ENCODER_CMD  _IOWR('V', 78, struct v4l2_encoder_cmd)
+#endif
 
-/* Experimental, only implemented if CONFIG_VIDEO_ADV_DEBUG is defined */
-#define VIDIOC_DBG_S_REGISTER    _IOW('V', 79, struct v4l2_register)
-#define VIDIOC_DBG_G_REGISTER   _IOWR('V', 80, struct v4l2_register)
-
-#define VIDIOC_G_CHIP_IDENT     _IOWR('V', 81, struct v4l2_chip_ident)
+#if 1
+/* Experimental, meant for debugging, testing and internal use.
+   Only implemented if CONFIG_VIDEO_ADV_DEBUG is defined.
+   You must be root to use these ioctls. Never use these in applications! */
+#define VIDIOC_DBG_S_REGISTER    _IOW('V', 79, struct v4l2_dbg_register)
+#define VIDIOC_DBG_G_REGISTER   _IOWR('V', 80, struct v4l2_dbg_register)
+
+/* Experimental, meant for debugging, testing and internal use.
+   Never use this ioctl in applications! */
+#define VIDIOC_DBG_G_CHIP_IDENT _IOWR('V', 81, struct v4l2_dbg_chip_ident)
+/* This is deprecated and will go away in 2.6.30 */
+#define VIDIOC_G_CHIP_IDENT_OLD _IOWR('V', 81, struct v4l2_chip_ident_old)
 #endif
+
 #define VIDIOC_S_HW_FREQ_SEEK    _IOW('V', 82, struct v4l2_hw_freq_seek)
 /* Reminder: when adding new ioctls please add support for them to
    drivers/media/video/v4l2-compat-ioctl32.c as well! */
diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h
index 425b6a98c95c..7440d9250665 100644
--- a/include/media/soc_camera.h
+++ b/include/media/soc_camera.h
@@ -164,12 +164,12 @@ struct soc_camera_ops {
         unsigned long (*query_bus_param)(struct soc_camera_device *);
         int (*set_bus_param)(struct soc_camera_device *, unsigned long);
         int (*get_chip_id)(struct soc_camera_device *,
-                           struct v4l2_chip_ident *);
+                           struct v4l2_dbg_chip_ident *);
         int (*set_std)(struct soc_camera_device *, v4l2_std_id *);
         int (*enum_input)(struct soc_camera_device *, struct v4l2_input *);
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-        int (*get_register)(struct soc_camera_device *, struct v4l2_register *);
-        int (*set_register)(struct soc_camera_device *, struct v4l2_register *);
+        int (*get_register)(struct soc_camera_device *, struct v4l2_dbg_register *);
+        int (*set_register)(struct soc_camera_device *, struct v4l2_dbg_register *);
 #endif
         int (*get_control)(struct soc_camera_device *, struct v4l2_control *);
         int (*set_control)(struct soc_camera_device *, struct v4l2_control *);
diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h
index 43dbb659f1f5..9aaf652b20ef 100644
--- a/include/media/v4l2-chip-ident.h
+++ b/include/media/v4l2-chip-ident.h
@@ -2,7 +2,7 @@
     v4l2 chip identifiers header
 
     This header provides a list of chip identifiers that can be returned
-    through the VIDIOC_G_CHIP_IDENT ioctl.
+    through the VIDIOC_DBG_G_CHIP_IDENT ioctl.
 
     Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
 
@@ -24,7 +24,7 @@
 #ifndef V4L2_CHIP_IDENT_H_
 #define V4L2_CHIP_IDENT_H_
 
-/* VIDIOC_G_CHIP_IDENT: identifies the actual chip installed on the board */
+/* VIDIOC_DBG_G_CHIP_IDENT: identifies the actual chip installed on the board */
 enum {
         /* general idents: reserved range 0-49 */
         V4L2_IDENT_NONE      = 0,       /* No chip matched */
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index f99c866d8c37..95e74f1874e1 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -114,10 +114,10 @@ u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id);
 /* Register/chip ident helper function */
 
 struct i2c_client; /* forward reference */
-int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 id_type, u32 chip_id);
-int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_chip_ident *chip,
+int v4l2_chip_match_i2c_client(struct i2c_client *c, const struct v4l2_dbg_match *match);
+int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_dbg_chip_ident *chip,
                 u32 ident, u32 revision);
-int v4l2_chip_match_host(u32 id_type, u32 chip_id);
+int v4l2_chip_match_host(const struct v4l2_dbg_match *match);
 
 /* ------------------------------------------------------------------------- */
 
diff --git a/include/media/v4l2-int-device.h b/include/media/v4l2-int-device.h
index ecda3c725837..fbf585561570 100644
--- a/include/media/v4l2-int-device.h
+++ b/include/media/v4l2-int-device.h
@@ -219,7 +219,7 @@ enum v4l2_int_ioctl_num {
         vidioc_int_reset_num,
         /* VIDIOC_INT_INIT */
         vidioc_int_init_num,
-        /* VIDIOC_INT_G_CHIP_IDENT */
+        /* VIDIOC_DBG_G_CHIP_IDENT */
         vidioc_int_g_chip_ident_num,
 
         /*
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index bf0e723a99c1..b01c044868d0 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -225,12 +225,12 @@ struct v4l2_ioctl_ops {
         /* Debugging ioctls */
 #ifdef CONFIG_VIDEO_ADV_DEBUG
         int (*vidioc_g_register)       (struct file *file, void *fh,
-                                        struct v4l2_register *reg);
+                                        struct v4l2_dbg_register *reg);
         int (*vidioc_s_register)       (struct file *file, void *fh,
-                                        struct v4l2_register *reg);
+                                        struct v4l2_dbg_register *reg);
 #endif
         int (*vidioc_g_chip_ident)     (struct file *file, void *fh,
-                                        struct v4l2_chip_ident *chip);
+                                        struct v4l2_dbg_chip_ident *chip);
 
         int (*vidioc_enum_framesizes)   (struct file *file, void *fh,
                                          struct v4l2_frmsizeenum *fsize);
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 2517344313b6..37b09e56e943 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -69,7 +69,7 @@ struct tuner_setup;
    not yet implemented) since ops provide proper type-checking.
  */
 struct v4l2_subdev_core_ops {
-        int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip);
+        int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip);
         int (*log_status)(struct v4l2_subdev *sd);
         int (*init)(struct v4l2_subdev *sd, u32 val);
         int (*s_standby)(struct v4l2_subdev *sd, u32 standby);
@@ -81,8 +81,8 @@ struct v4l2_subdev_core_ops {
         int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm);
         long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg);
 #ifdef CONFIG_VIDEO_ADV_DEBUG
-        int (*g_register)(struct v4l2_subdev *sd, struct v4l2_register *reg);
-        int (*s_register)(struct v4l2_subdev *sd, struct v4l2_register *reg);
+        int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg);
+        int (*s_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg);
 #endif
 };