diff options
Diffstat (limited to 'drivers/media/usb/tlg2300/pd-radio.c')
-rw-r--r-- | drivers/media/usb/tlg2300/pd-radio.c | 421 |
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 00000000000..25eeb166aa0 --- /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; +} |