From ddd86436f4e3643c04b797f858dab95d5f2e4de9 Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 15:00:15 +0000 Subject: fish --- drivers/media/usb/tlg2300/pd-radio.c | 340 +++++++++++++++++++++++++++++++++++ 1 file changed, 340 insertions(+) create mode 100644 drivers/media/usb/tlg2300/pd-radio.c (limited to 'drivers/media/usb/tlg2300/pd-radio.c') diff --git a/drivers/media/usb/tlg2300/pd-radio.c b/drivers/media/usb/tlg2300/pd-radio.c new file mode 100644 index 0000000..ea6070b --- /dev/null +++ b/drivers/media/usb/tlg2300/pd-radio.c @@ -0,0 +1,340 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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 76000000U +#define TUNER_FREQ_MAX_FM 108000000U + +#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 poseidon *p = video_drvdata(filp); + int ret = 0; + + 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; + } + ret = v4l2_fh_open(filp); + if (ret) + goto out; + + usb_autopm_get_interface(p->interface); + if (0 == p->state) { + struct video_device *vfd = &p->radio_data.fm_dev; + + /* 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; + } + kref_get(&p->kref); +out: + mutex_unlock(&p->lock); + return ret; +} + +static int poseidon_fm_close(struct file *filp) +{ + struct poseidon *p = video_drvdata(filp); + struct radio_data *fm = &p->radio_data; + uint32_t status; + + mutex_lock(&p->lock); + if (v4l2_fh_is_singular_file(filp)) + 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); + return v4l2_fh_release(filp); +} + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *v) +{ + struct poseidon *p = video_drvdata(file); + + 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->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; + /* Report all capabilities of the USB device */ + v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS | + V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE | + V4L2_CAP_AUDIO | V4L2_CAP_STREAMING | + V4L2_CAP_READWRITE; + return 0; +} + +static const struct v4l2_file_operations poseidon_fm_fops = { + .owner = THIS_MODULE, + .open = poseidon_fm_open, + .release = poseidon_fm_close, + .poll = v4l2_ctrl_poll, + .unlocked_ioctl = video_ioctl2, +}; + +static int tlg_fm_vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *vt) +{ + struct poseidon *p = video_drvdata(file); + struct tuner_fm_sig_stat_s fm_stat = {}; + int ret, status, count = 5; + + if (vt->index != 0) + return -EINVAL; + + vt->type = V4L2_TUNER_RADIO; + vt->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW; + vt->rangelow = TUNER_FREQ_MIN_FM * 2 / 125; + vt->rangehigh = TUNER_FREQ_MAX_FM * 2 / 125; + vt->rxsubchans = V4L2_TUNER_SUB_STEREO; + vt->audmode = V4L2_TUNER_MODE_STEREO; + vt->signal = 0; + vt->afc = 0; + strlcpy(vt->name, "Radio", sizeof(vt->name)); + + 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 = video_drvdata(file); + + if (argp->tuner) + return -EINVAL; + 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) / 2; /* Hz */ + freq = clamp(freq, TUNER_FREQ_MIN_FM, TUNER_FREQ_MAX_FM); + + 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 = freq * 2 / 125; +error: + mutex_unlock(&p->lock); + return ret; +} + +static int fm_set_freq(struct file *file, void *priv, + const struct v4l2_frequency *argp) +{ + struct poseidon *p = video_drvdata(file); + + if (argp->tuner) + return -EINVAL; + 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_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct poseidon *p = container_of(ctrl->handler, struct poseidon, + radio_data.ctrl_handler); + int pre_emphasis; + u32 status; + + 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 vidioc_s_tuner(struct file *file, void *priv, const 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_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, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static struct video_device poseidon_fm_template = { + .name = "Telegent-Radio", + .fops = &poseidon_fm_fops, + .minor = -1, + .release = video_device_release_empty, + .ioctl_ops = &poseidon_fm_ioctl_ops, +}; + +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; + + 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; + set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); + video_set_drvdata(vfd, p); + return video_register_device(vfd, VFL_TYPE_RADIO, -1); +} + +int poseidon_fm_exit(struct poseidon *p) +{ + video_unregister_device(&p->radio_data.fm_dev); + v4l2_ctrl_handler_free(&p->radio_data.ctrl_handler); + return 0; +} -- cgit v1.2.3