于 2013年01月31日 05:25, Hans Verkuil 写道:
> From: Hans Verkuil <hans.verk...@cisco.com>
>
> Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
> ---
> drivers/media/usb/tlg2300/pd-common.h | 2 +
> drivers/media/usb/tlg2300/pd-radio.c | 112
> ++++++++-------------------------
> 2 files changed, 28 insertions(+), 86 deletions(-)
>
> diff --git a/drivers/media/usb/tlg2300/pd-common.h
> b/drivers/media/usb/tlg2300/pd-common.h
> index 3a89128..b26082a 100644
> --- a/drivers/media/usb/tlg2300/pd-common.h
> +++ b/drivers/media/usb/tlg2300/pd-common.h
> @@ -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
> diff --git a/drivers/media/usb/tlg2300/pd-radio.c
> b/drivers/media/usb/tlg2300/pd-radio.c
> index 719c3da..45b3d7a 100644
> --- a/drivers/media/usb/tlg2300/pd-radio.c
> +++ b/drivers/media/usb/tlg2300/pd-radio.c
> @@ -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;
> -}
> -
> -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;
> + struct poseidon *p = container_of(ctrl->handler, struct poseidon,
> + radio_data.ctrl_handler);
> + int pre_emphasis;
> + u32 status;
>
> - 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;
> }
Acked-by: Huang Shijie <shij...@gmail.com>
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