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[media] tlg2300: add control handler for radio device node

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Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2012-07-12 12:56:47 -03:00 committed by Mauro Carvalho Chehab
parent 6fef490706
commit 173fdb8aff
2 changed files with 28 additions and 86 deletions
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2
drivers/media/usb/tlg2300/pd-common.h
View File

@ -10,6 +10,7 @@
#include <linux/poll.h>
#include <media/videobuf-vmalloc.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include "dvb_frontend.h"
#include "dvbdev.h"
@ -119,6 +120,7 @@ struct radio_data {
unsigned int is_radio_streaming;
int pre_emphasis;
struct video_device fm_dev;
struct v4l2_ctrl_handler ctrl_handler;
};
#define DVB_SBUF_NUM 4

112
drivers/media/usb/tlg2300/pd-radio.c
View File

@ -261,104 +261,34 @@ static int fm_set_freq(struct file *file, void *priv,
return set_frequency(p, argp->frequency);
}
static int tlg_fm_vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *arg)
static int tlg_fm_s_ctrl(struct v4l2_ctrl *ctrl)
{
return 0;
}
struct poseidon *p = container_of(ctrl->handler, struct poseidon,
radio_data.ctrl_handler);
int pre_emphasis;
u32 status;
static int tlg_fm_vidioc_g_exts_ctrl(struct file *file, void *fh,
struct v4l2_ext_controls *ctrls)
{
struct poseidon *p = file->private_data;
int i;
if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
return -EINVAL;
for (i = 0; i < ctrls->count; i++) {
struct v4l2_ext_control *ctrl = ctrls->controls + i;
if (ctrl->id != V4L2_CID_TUNE_PREEMPHASIS)
continue;
if (i < MAX_PREEMPHASIS)
ctrl->value = p->radio_data.pre_emphasis;
}
return 0;
}
static int tlg_fm_vidioc_s_exts_ctrl(struct file *file, void *fh,
struct v4l2_ext_controls *ctrls)
{
int i;
if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
return -EINVAL;
for (i = 0; i < ctrls->count; i++) {
struct v4l2_ext_control *ctrl = ctrls->controls + i;
if (ctrl->id != V4L2_CID_TUNE_PREEMPHASIS)
continue;
if (ctrl->value >= 0 && ctrl->value < MAX_PREEMPHASIS) {
struct poseidon *p = file->private_data;
int pre_emphasis = preemphasis[ctrl->value];
u32 status;
send_set_req(p, TUNER_AUD_ANA_STD,
pre_emphasis, &status);
p->radio_data.pre_emphasis = pre_emphasis;
}
}
return 0;
}
static int tlg_fm_vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
return 0;
}
static int tlg_fm_vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *ctrl)
{
if (!(ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL))
return -EINVAL;
ctrl->id &= ~V4L2_CTRL_FLAG_NEXT_CTRL;
if (ctrl->id != V4L2_CID_TUNE_PREEMPHASIS) {
/* return the next supported control */
ctrl->id = V4L2_CID_TUNE_PREEMPHASIS;
v4l2_ctrl_query_fill(ctrl, V4L2_PREEMPHASIS_DISABLED,
V4L2_PREEMPHASIS_75_uS, 1,
V4L2_PREEMPHASIS_50_uS);
ctrl->flags = V4L2_CTRL_FLAG_UPDATE;
switch (ctrl->id) {
case V4L2_CID_TUNE_PREEMPHASIS:
pre_emphasis = preemphasis[ctrl->val];
send_set_req(p, TUNER_AUD_ANA_STD, pre_emphasis, &status);
p->radio_data.pre_emphasis = pre_emphasis;
return 0;
}
return -EINVAL;
}
static int tlg_fm_vidioc_querymenu(struct file *file, void *fh,
struct v4l2_querymenu *qmenu)
{
return v4l2_ctrl_query_menu(qmenu, NULL, NULL);
}
static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)
{
return vt->index > 0 ? -EINVAL : 0;
}
static const struct v4l2_ctrl_ops tlg_fm_ctrl_ops = {
.s_ctrl = tlg_fm_s_ctrl,
};
static const struct v4l2_ioctl_ops poseidon_fm_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_queryctrl = tlg_fm_vidioc_queryctrl,
.vidioc_querymenu = tlg_fm_vidioc_querymenu,
.vidioc_g_ctrl = tlg_fm_vidioc_g_ctrl,
.vidioc_s_ctrl = tlg_fm_vidioc_s_ctrl,
.vidioc_s_ext_ctrls = tlg_fm_vidioc_s_exts_ctrl,
.vidioc_g_ext_ctrls = tlg_fm_vidioc_g_exts_ctrl,
.vidioc_s_tuner = vidioc_s_tuner,
.vidioc_g_tuner = tlg_fm_vidioc_g_tuner,
.vidioc_g_frequency = fm_get_freq,
@ -376,16 +306,26 @@ static struct video_device poseidon_fm_template = {
int poseidon_fm_init(struct poseidon *p)
{
struct video_device *vfd = &p->radio_data.fm_dev;
struct v4l2_ctrl_handler *hdl = &p->radio_data.ctrl_handler;
*vfd = poseidon_fm_template;
vfd->v4l2_dev = &p->v4l2_dev;
video_set_drvdata(vfd, p);
set_frequency(p, TUNER_FREQ_MIN_FM);
v4l2_ctrl_handler_init(hdl, 1);
v4l2_ctrl_new_std_menu(hdl, &tlg_fm_ctrl_ops, V4L2_CID_TUNE_PREEMPHASIS,
V4L2_PREEMPHASIS_75_uS, 0, V4L2_PREEMPHASIS_50_uS);
if (hdl->error) {
v4l2_ctrl_handler_free(hdl);
return hdl->error;
}
vfd->v4l2_dev = &p->v4l2_dev;
vfd->ctrl_handler = hdl;
video_set_drvdata(vfd, p);
return video_register_device(vfd, VFL_TYPE_RADIO, -1);
}
int poseidon_fm_exit(struct poseidon *p)
{
v4l2_ctrl_handler_free(&p->radio_data.ctrl_handler);
return 0;
}