V4L/DVB (8639): saa6752hs: cleanup and add AC-3 support

Cleaned up the saa6752hs i2c driver.
Add AC-3 support.
Add VIDIOC_CHIP_IDENT support.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 21 insertions, 1 deletions

diff --git a/drivers/media/video/saa7134/saa7134-empress.c b/drivers/media/video/saa7134/saa7134-empress.c
index 6f423d116fb4..f5a186a13db2 100644
--- a/drivers/media/video/saa7134/saa7134-empress.c
+++ b/drivers/media/video/saa7134/saa7134-empress.c
@@ -29,6 +29,7 @@
 
 #include <media/saa6752hs.h>
 #include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
 
 /* ------------------------------------------------------------------ */
 
@@ -403,6 +404,25 @@ static int empress_querymenu(struct file *file, void *priv,
         return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYMENU, c);
 }
 
+static int empress_g_chip_ident(struct file *file, void *fh,
+               struct v4l2_chip_ident *chip)
+{
+        struct saa7134_dev *dev = file->private_data;
+
+        chip->ident = V4L2_IDENT_NONE;
+        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);
+        return -EINVAL;
+}
+
+
 static const struct file_operations ts_fops =
 {
         .owner    = THIS_MODULE,
@@ -431,11 +451,11 @@ static const struct v4l2_ioctl_ops ts_ioctl_ops = {
         .vidioc_enum_input              = empress_enum_input,
         .vidioc_g_input                 = empress_g_input,
         .vidioc_s_input                 = empress_s_input,
-
         .vidioc_queryctrl               = empress_queryctrl,
         .vidioc_querymenu               = empress_querymenu,
         .vidioc_g_ctrl                  = empress_g_ctrl,
         .vidioc_s_ctrl                  = empress_s_ctrl,
+        .vidioc_g_chip_ident            = empress_g_chip_ident,
 };
 
 /* ----------------------------------------------------------- */