diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2013-03-18 12:21:53 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-03-25 09:34:22 -0300 |
| commit | 3b2d17b4ba77dce3a83c9e71dc8f086d7e743ec9 (patch) | |
| tree | bd5959ef08aac787ea630e412e2d6569de963750 /drivers/media/usb/em28xx/em28xx-video.c | |
| parent | c7622fc9483f57f0dd77ad50e104b7e53d6b365d (diff) | |
[media] em28xx: add support for g_chip_name
Add support for vidioc_g_chip_name, allowing AC97 to be implemented as a
second chip on the bridge with the name "ac97". v4l2-dbg can just match the
name with that string in order to detect a ac97-compliant set of registers.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-video.c')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-video.c | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index d09b5c03c723..b1817231f50c 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -1245,9 +1245,9 @@ static int vidioc_g_chip_ident(struct file *file, void *priv, chip->ident = V4L2_IDENT_NONE; chip->revision = 0; - if (chip->match.type == V4L2_CHIP_MATCH_HOST) { - if (v4l2_chip_match_host(&chip->match)) - chip->ident = V4L2_IDENT_NONE; + if (chip->match.type == V4L2_CHIP_MATCH_BRIDGE) { + if (chip->match.addr > 1) + return -EINVAL; return 0; } if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER && @@ -1259,6 +1259,21 @@ static int vidioc_g_chip_ident(struct file *file, void *priv, return 0; } +static int vidioc_g_chip_name(struct file *file, void *priv, + struct v4l2_dbg_chip_name *chip) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + if (chip->match.addr > 1) + return -EINVAL; + if (chip->match.addr == 1) + strlcpy(chip->name, "ac97", sizeof(chip->name)); + else + strlcpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name)); + return 0; +} + #ifdef CONFIG_VIDEO_ADV_DEBUG static int em28xx_reg_len(int reg) { @@ -1280,6 +1295,12 @@ static int vidioc_g_register(struct file *file, void *priv, int ret; switch (reg->match.type) { + case V4L2_CHIP_MATCH_BRIDGE: + if (reg->match.addr > 1) + return -EINVAL; + if (!reg->match.addr) + break; + /* fall-through */ case V4L2_CHIP_MATCH_AC97: ret = em28xx_read_ac97(dev, reg->reg); if (ret < 0) @@ -1296,8 +1317,7 @@ static int vidioc_g_register(struct file *file, void *priv, v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg); return 0; default: - if (!v4l2_chip_match_host(®->match)) - return -EINVAL; + return -EINVAL; } /* Match host */ @@ -1330,6 +1350,12 @@ static int vidioc_s_register(struct file *file, void *priv, __le16 buf; switch (reg->match.type) { + case V4L2_CHIP_MATCH_BRIDGE: + if (reg->match.addr > 1) + return -EINVAL; + if (!reg->match.addr) + break; + /* fall-through */ case V4L2_CHIP_MATCH_AC97: return em28xx_write_ac97(dev, reg->reg, reg->val); case V4L2_CHIP_MATCH_I2C_DRIVER: @@ -1340,8 +1366,7 @@ static int vidioc_s_register(struct file *file, void *priv, v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg); return 0; default: - if (!v4l2_chip_match_host(®->match)) - return -EINVAL; + return -EINVAL; } /* Match host */ @@ -1699,6 +1724,7 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, .vidioc_g_chip_ident = vidioc_g_chip_ident, + .vidioc_g_chip_name = vidioc_g_chip_name, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = vidioc_g_register, .vidioc_s_register = vidioc_s_register, @@ -1729,6 +1755,7 @@ static const struct v4l2_ioctl_ops radio_ioctl_ops = { .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, .vidioc_g_chip_ident = vidioc_g_chip_ident, + .vidioc_g_chip_name = vidioc_g_chip_name, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = vidioc_g_register, .vidioc_s_register = vidioc_s_register, |