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V4L/DVB (11175): pvrusb2: Implement sub-device specific update framework

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Lay down a foundation whereby it becomes possible to send customized
updates to specific sub-devices.  (This becomes useful for routing
configuration, which is a very sub-device specific operation.)

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mike Isely 2009-03-07 00:37:10 -03:00 committed by Mauro Carvalho Chehab
parent 858f910e86
commit edb9dcb885
1 changed files with 18 additions and 1 deletions
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19
drivers/media/video/pvrusb2/pvrusb2-hdw.c
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@ -105,6 +105,13 @@ MODULE_PARM_DESC(radio_freq, "specify initial radio frequency");
/* size of a firmware chunk */
#define FIRMWARE_CHUNK_SIZE 0x2000
typedef void (*pvr2_subdev_update_func)(struct pvr2_hdw *,
struct v4l2_subdev *);
static const pvr2_subdev_update_func pvr2_module_update_functions[] = {
/* ????? */
};
static const char *module_names[] = {
[PVR2_CLIENT_ID_MSP3400] = "msp3400",
[PVR2_CLIENT_ID_CX25840] = "cx25840",
@ -2900,6 +2907,10 @@ static void pvr2_subdev_set_control(struct pvr2_hdw *hdw, int id,
sub-devices so that they match our current control values. */
static void pvr2_subdev_update(struct pvr2_hdw *hdw)
{
struct v4l2_subdev *sd;
unsigned int id;
pvr2_subdev_update_func fp;
if (hdw->input_dirty || hdw->std_dirty) {
pvr2_trace(PVR2_TRACE_CHIPS,"subdev v4l2 set_standard");
if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
@ -2971,7 +2982,13 @@ static void pvr2_subdev_update(struct pvr2_hdw *hdw)
/* Unable to set crop parameters; there is apparently no equivalent
for VIDIOC_S_CROP */
/* ????? Cover special cases for specific sub-devices. */
v4l2_device_for_each_subdev(sd, &hdw->v4l2_dev) {
id = sd->grp_id;
if (id >= ARRAY_SIZE(pvr2_module_update_functions)) continue;
fp = pvr2_module_update_functions[id];
if (!fp) continue;
(*fp)(hdw, sd);
}
if (hdw->tuner_signal_stale && hdw->cropcap_stale) {
pvr2_hdw_status_poll(hdw);