This module contains codes for radio.
The radio use the ALSA audio as input.
The mplayer should be compiled with --enable-radio and
--enable-radio-capture.
The command runs as this(assume the alsa audio registers to card 1):
#mplayer radio://103.7/capture/ -radio
adevice=hw=1,0:arate=48000 -rawaudio rate=48000:channels=2
Signed-off-by: Huang Shijie <shijie8@xxxxxxxxx>
---
drivers/media/video/tlg2300/pd-radio.c | 383 ++++++++++++++++++++++++++++++++
1 files changed, 383 insertions(+), 0 deletions(-)
create mode 100644 drivers/media/video/tlg2300/pd-radio.c
diff --git a/drivers/media/video/tlg2300/pd-radio.c b/drivers/media/video/tlg2300/pd-radio.c
new file mode 100644
index 0000000..2576f3a
--- /dev/null
+++ b/drivers/media/video/tlg2300/pd-radio.c
@@ -0,0 +1,383 @@
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/bitmap.h>
+#include <linux/usb.h>
+#include <linux/i2c.h>
+#include <media/v4l2-dev.h>
+#include <linux/version.h>
+#include <linux/mm.h>
+#include <linux/mutex.h>
+#include <media/v4l2-ioctl.h>
+#include <linux/sched.h>
+
+#include "pd-common.h"
+#include "vendorcmds.h"
+
+static int set_frequency(struct poseidon *p, __u32 frequency);
+static int poseidon_fm_close(struct file *filp);
+static int poseidon_fm_open(struct file *filp);
+static int __poseidon_fm_close(struct file *filp);
+
+#define TUNER_FREQ_MIN_FM 76000000
+#define TUNER_FREQ_MAX_FM 108000000
+
+static int poseidon_check_mode_radio(struct poseidon *p)
+{
+ int ret, radiomode;
+ u32 status;
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ/2);
+ ret = usb_set_interface(p->udev, 0, BULK_ALTERNATE_IFACE);
+ if (ret < 0)
+ goto out;
+
+ ret = set_tuner_mode(p, TLG_MODE_FM_RADIO);
+ if (ret != 0)
+ goto out;
+
+ ret = send_set_req(p, SGNL_SRC_SEL, TLG_SIG_SRC_ANTENNA, &status);
+ radiomode = get_audio_std(TLG_MODE_FM_RADIO, p->country_code);
+ ret = send_set_req(p, TUNER_AUD_ANA_STD, radiomode, &status);
+ ret |= send_set_req(p, TUNER_AUD_MODE,
+ TLG_TUNE_TVAUDIO_MODE_STEREO, &status);
+ ret |= send_set_req(p, AUDIO_SAMPLE_RATE_SEL,
+ ATV_AUDIO_RATE_48K, &status);
+ ret |= send_set_req(p, TUNE_FREQ_SELECT, TUNER_FREQ_MIN_FM, &status);
+out:
+ return ret;
+}
+
+static int pm_fm_suspend(struct poseidon *p)
+{
+ pm_alsa_suspend(p);
+ usb_set_interface(p->udev, 0, 0);
+ mdelay(2000);
+ return 0;
+}
+
+static int pm_fm_resume(struct poseidon *p)
+{
+ if (in_hibernation(p)) {
+ __poseidon_fm_close(p->file_for_stream);
+ return 0;
+ }
+ poseidon_check_mode_radio(p);
+ set_frequency(p, p->radio_data.fm_freq);
+ pm_alsa_resume(p);
+ return 0;
+}
+
+static int poseidon_fm_open(struct file *filp)
+{
+ struct video_device *vfd = video_devdata(filp);
+ struct poseidon *p = video_get_drvdata(vfd);
+ int ret = 0;
+
+ if (!p)
+ return -1;
+
+ mutex_lock(&p->lock);
+ if (p->state & POSEIDON_STATE_DISCONNECT) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ if (p->state && !(p->state & POSEIDON_STATE_FM)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ usb_autopm_get_interface(p->interface);
+ if (0 == p->state) {
+ p->country_code = country_code;
+ set_debug_mode(vfd, debug_mode);
+
+ ret = poseidon_check_mode_radio(p);
+ if (ret < 0)
+ goto out;
+ p->state |= POSEIDON_STATE_FM;
+ }
+ p->radio_data.users++;
+ kref_get(&p->kref);
+ filp->private_data = p;
+out:
+ mutex_unlock(&p->lock);
+ return ret;
+}
+
+static int __poseidon_fm_close(struct file *filp)
+{
+ struct poseidon *p = filp->private_data;
+ struct radio_data *fm = &p->radio_data;
+ uint32_t status;
+
+ mutex_lock(&p->lock);
+ fm->users--;
+ if (0 == fm->users)
+ p->state &= ~POSEIDON_STATE_FM;
+
+ if (fm->is_radio_streaming && filp == p->file_for_stream) {
+ fm->is_radio_streaming = 0;
+ send_set_req(p, PLAY_SERVICE, TLG_TUNE_PLAY_SVC_STOP, &status);
+ }
+ mutex_unlock(&p->lock);
+
+ kref_put(&p->kref, poseidon_delete);
+ filp->private_data = NULL;
+ return 0;
+}
+
+static int poseidon_fm_close(struct file *filp)
+{
+ struct poseidon *p = filp->private_data;
+
+ __poseidon_fm_close(filp);
+ usb_autopm_put_interface(p->interface);
+ return 0;
+}
+
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *v)
+{
+ strlcpy(v->driver, "radio-tele", sizeof(v->driver));
+ strlcpy(v->card, "telegent Radio", sizeof(v->card));
+ sprintf(v->bus_info, "USB");
+ v->version = 0;
+ v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
+ return 0;
+}
+
+static long pd_radio_ioctls(struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct poseidon *p = file->private_data;
+ unsigned long ret;
+ int country_code;
+
+ if (in_hibernation(p))
+ return -1;
+
+ if (cmd == PD_COUNTRY_CODE) {
+ ret = copy_from_user(&country_code, (void __user *)arg,
+ sizeof(country_code));
+ if (0 == ret) {
+ p->country_code = country_code;
+ return 0;
+ } else
+ return -EAGAIN;
+ }
+ return video_ioctl2(file, cmd, arg);
+}
+
+static const struct v4l2_file_operations poseidon_fm_fops = {
+ .owner = THIS_MODULE,
+ .open = poseidon_fm_open,
+ .release = poseidon_fm_close,
+ .ioctl = pd_radio_ioctls,
+};
+
+int tlg_fm_vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)
+{
+ struct tuner_fm_sig_stat_s fm_stat = {};
+ int ret, status, count = 5;
+ struct poseidon *p = file->private_data;
+
+ if (vt->index != 0)
+ return -EINVAL;
+
+ vt->type = V4L2_TUNER_RADIO;
+ vt->capability = V4L2_TUNER_CAP_STEREO;
+ vt->rangelow = TUNER_FREQ_MIN_FM / 62500;
+ vt->rangehigh = TUNER_FREQ_MAX_FM / 62500;
+ vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
+ vt->audmode = V4L2_TUNER_MODE_STEREO;
+ vt->signal = 0;
+ vt->afc = 0;
+
+ mutex_lock(&p->lock);
+ ret = send_get_req(p, TUNER_STATUS, TLG_MODE_FM_RADIO,
+ &fm_stat, &status, sizeof(fm_stat));
+
+ while (fm_stat.sig_lock_busy && count-- && !ret) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ);
+
+ ret = send_get_req(p, TUNER_STATUS, TLG_MODE_FM_RADIO,
+ &fm_stat, &status, sizeof(fm_stat));
+ }
+ mutex_unlock(&p->lock);
+
+ if (ret || status) {
+ vt->signal = 0;
+ } else if ((fm_stat.sig_present || fm_stat.sig_locked)
+ && fm_stat.sig_strength == 0) {
+ vt->signal = 0xffff;
+ } else
+ vt->signal = (fm_stat.sig_strength * 255 / 10) << 8;
+
+ return 0;
+}
+
+int fm_get_freq(struct file *file, void *priv, struct v4l2_frequency *argp)
+{
+ struct poseidon *p = file->private_data;
+
+ argp->frequency = p->radio_data.fm_freq;
+ return 0;
+}
+
+static int set_frequency(struct poseidon *p, __u32 frequency)
+{
+ __u32 freq ;
+ int ret, status, radiomode;
+
+ mutex_lock(&p->lock);
+
+ radiomode = get_audio_std(TLG_MODE_FM_RADIO, p->country_code);
+ /*NTSC 8,PAL 2 */
+ ret = send_set_req(p, TUNER_AUD_ANA_STD, radiomode, &status);
+
+ freq = (frequency * 125) * 500 / 1000;/* kHZ */
+ if (freq < TUNER_FREQ_MIN_FM/1000 || freq > TUNER_FREQ_MAX_FM/1000) {
+ ret = -EINVAL;
+ goto error;
+ }
+
+ ret = send_set_req(p, TUNE_FREQ_SELECT, freq, &status);
+ if (ret < 0)
+ goto error ;
+ ret = send_set_req(p, TAKE_REQUEST, 0, &status);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ/4);
+ if (!p->radio_data.is_radio_streaming) {
+ ret = send_set_req(p, TAKE_REQUEST, 0, &status);
+ ret = send_set_req(p, PLAY_SERVICE,
+ TLG_TUNE_PLAY_SVC_START, &status);
+ p->radio_data.is_radio_streaming = 1;
+ }
+ p->radio_data.fm_freq = frequency;
+error:
+ mutex_unlock(&p->lock);
+ return ret;
+}
+
+int fm_set_freq(struct file *file, void *priv, struct v4l2_frequency *argp)
+{
+ struct poseidon *p = file->private_data;
+
+ p->file_for_stream = file;
+#ifdef CONFIG_PM
+ p->inode = file->f_dentry->d_inode;
+ p->pm_open = poseidon_fm_open;
+ p->pm_suspend = pm_fm_suspend;
+ p->pm_resume = pm_fm_resume;
+#endif
+ return set_frequency(p, argp->frequency);
+}
+
+int tlg_fm_vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *arg)
+{
+ return 0;
+}
+
+int tlg_fm_vidioc_exts_ctrl(struct file *file, void *fh,
+ struct v4l2_ext_controls *a)
+{
+ return 0;
+}
+
+int tlg_fm_vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *arg)
+{
+ return 0;
+}
+
+int tlg_fm_vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *arg)
+{
+ arg->minimum = 0;
+ arg->maximum = 65535;
+ return 0;
+}
+
+static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)
+{
+ return vt->index > 0 ? -EINVAL : 0;
+}
+static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *va)
+{
+ return (va->index != 0) ? -EINVAL : 0;
+}
+
+static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
+{
+ a->index = 0;
+ a->mode = 0;
+ a->capability = V4L2_AUDCAP_STEREO;
+ strcpy(a->name, "Radio");
+ return 0;
+}
+
+static int vidioc_s_input(struct file *filp, void *priv, u32 i)
+{
+ return (i != 0) ? -EINVAL : 0;
+}
+
+static int vidioc_g_input(struct file *filp, void *priv, u32 *i)
+{
+ return (*i != 0) ? -EINVAL : 0;
+}
+
+static const struct v4l2_ioctl_ops poseidon_fm_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_g_audio = vidioc_g_audio,
+ .vidioc_s_audio = vidioc_s_audio,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+ .vidioc_queryctrl = tlg_fm_vidioc_queryctrl,
+ .vidioc_g_ctrl = tlg_fm_vidioc_g_ctrl,
+ .vidioc_s_ctrl = tlg_fm_vidioc_s_ctrl,
+ .vidioc_s_ext_ctrls = tlg_fm_vidioc_exts_ctrl,
+ .vidioc_s_tuner = vidioc_s_tuner,
+ .vidioc_g_tuner = tlg_fm_vidioc_g_tuner,
+ .vidioc_g_frequency = fm_get_freq,
+ .vidioc_s_frequency = fm_set_freq,
+};
+
+static struct video_device poseidon_fm_template = {
+ .name = "telegent-FM",
+ .fops = &poseidon_fm_fops,
+ .minor = -1,
+ .release = video_device_release,
+ .ioctl_ops = &poseidon_fm_ioctl_ops,
+};
+
+int poseidon_fm_init(struct poseidon *p)
+{
+ struct video_device *fm_dev;
+
+ fm_dev = vdev_init(p, &poseidon_fm_template);
+ if (fm_dev == NULL)
+ return -1;
+
+ if (video_register_device(fm_dev, VFL_TYPE_RADIO, -1) < 0) {
+ video_device_release(fm_dev);
+ return -1;
+ }
+ p->radio_data.fm_dev = fm_dev;
+ return 0;
+}
+
+int poseidon_fm_exit(struct poseidon *p)
+{
+ if (p->radio_data.fm_dev) {
+ video_unregister_device(p->radio_data.fm_dev);
+ p->radio_data.fm_dev = NULL;
+ }
+ return 0;
+}
--
1.6.0.6
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