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path: root/drivers/media/usb/tlg2300/pd-radio.c
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Diffstat (limited to 'drivers/media/usb/tlg2300/pd-radio.c')
-rw-r--r--drivers/media/usb/tlg2300/pd-radio.c421
1 files changed, 421 insertions, 0 deletions
diff --git a/drivers/media/usb/tlg2300/pd-radio.c b/drivers/media/usb/tlg2300/pd-radio.c
new file mode 100644
index 0000000..25eeb16
--- /dev/null
+++ b/drivers/media/usb/tlg2300/pd-radio.c
@@ -0,0 +1,421 @@
+#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/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);
+
+#define TUNER_FREQ_MIN_FM 76000000
+#define TUNER_FREQ_MAX_FM 108000000
+
+#define MAX_PREEMPHASIS (V4L2_PREEMPHASIS_75_uS + 1)
+static int preemphasis[MAX_PREEMPHASIS] = {
+ TLG_TUNE_ASTD_NONE, /* V4L2_PREEMPHASIS_DISABLED */
+ TLG_TUNE_ASTD_FM_EUR, /* V4L2_PREEMPHASIS_50_uS */
+ TLG_TUNE_ASTD_FM_US, /* V4L2_PREEMPHASIS_75_uS */
+};
+
+static int poseidon_check_mode_radio(struct poseidon *p)
+{
+ int ret;
+ 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);
+ ret = send_set_req(p, TUNER_AUD_ANA_STD,
+ p->radio_data.pre_emphasis, &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;
+}
+
+#ifdef CONFIG_PM
+static int pm_fm_suspend(struct poseidon *p)
+{
+ logpm(p);
+ pm_alsa_suspend(p);
+ usb_set_interface(p->udev, 0, 0);
+ msleep(300);
+ return 0;
+}
+
+static int pm_fm_resume(struct poseidon *p)
+{
+ logpm(p);
+ poseidon_check_mode_radio(p);
+ set_frequency(p, p->radio_data.fm_freq);
+ pm_alsa_resume(p);
+ return 0;
+}
+#endif
+
+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) {
+ /* default pre-emphasis */
+ if (p->radio_data.pre_emphasis == 0)
+ p->radio_data.pre_emphasis = TLG_TUNE_ASTD_FM_EUR;
+ set_debug_mode(vfd, debug_mode);
+
+ ret = poseidon_check_mode_radio(p);
+ if (ret < 0) {
+ usb_autopm_put_interface(p->interface);
+ 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);
+ }
+ usb_autopm_put_interface(p->interface);
+ mutex_unlock(&p->lock);
+
+ kref_put(&p->kref, poseidon_delete);
+ filp->private_data = NULL;
+ return 0;
+}
+
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *v)
+{
+ struct poseidon *p = file->private_data;
+
+ strlcpy(v->driver, "tele-radio", sizeof(v->driver));
+ strlcpy(v->card, "Telegent Poseidon", sizeof(v->card));
+ usb_make_path(p->udev, v->bus_info, sizeof(v->bus_info));
+ v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
+ return 0;
+}
+
+static const struct v4l2_file_operations poseidon_fm_fops = {
+ .owner = THIS_MODULE,
+ .open = poseidon_fm_open,
+ .release = poseidon_fm_close,
+ .ioctl = video_ioctl2,
+};
+
+static 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;
+}
+
+static 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;
+
+ mutex_lock(&p->lock);
+
+ ret = send_set_req(p, TUNER_AUD_ANA_STD,
+ p->radio_data.pre_emphasis, &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;
+}
+
+static 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->pm_suspend = pm_fm_suspend;
+ p->pm_resume = pm_fm_resume;
+#endif
+ return set_frequency(p, argp->frequency);
+}
+
+static int tlg_fm_vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *arg)
+{
+ 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;
+
+ 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;
+ 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 int vidioc_s_audio(struct file *file, void *priv, const 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_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,
+ .vidioc_s_frequency = fm_set_freq,
+};
+
+static struct video_device poseidon_fm_template = {
+ .name = "Telegent-Radio",
+ .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)
+{
+ destroy_video_device(&p->radio_data.fm_dev);
+ return 0;
+}
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