forked from Minki/linux
0e8025b9f6
Write-only ioctls should have a const argument in the ioctl op. Do this conversion for vidioc_s_audio. Adding const for write-only ioctls was decided during the 2012 Media Workshop. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
422 lines
10 KiB
C
422 lines
10 KiB
C
#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/bitmap.h>
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#include <linux/usb.h>
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#include <linux/i2c.h>
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#include <media/v4l2-dev.h>
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#include <linux/mm.h>
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#include <linux/mutex.h>
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#include <media/v4l2-ioctl.h>
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#include <linux/sched.h>
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#include "pd-common.h"
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#include "vendorcmds.h"
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static int set_frequency(struct poseidon *p, __u32 frequency);
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static int poseidon_fm_close(struct file *filp);
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static int poseidon_fm_open(struct file *filp);
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#define TUNER_FREQ_MIN_FM 76000000
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#define TUNER_FREQ_MAX_FM 108000000
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#define MAX_PREEMPHASIS (V4L2_PREEMPHASIS_75_uS + 1)
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static int preemphasis[MAX_PREEMPHASIS] = {
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TLG_TUNE_ASTD_NONE, /* V4L2_PREEMPHASIS_DISABLED */
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TLG_TUNE_ASTD_FM_EUR, /* V4L2_PREEMPHASIS_50_uS */
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TLG_TUNE_ASTD_FM_US, /* V4L2_PREEMPHASIS_75_uS */
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};
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static int poseidon_check_mode_radio(struct poseidon *p)
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{
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int ret;
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u32 status;
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout(HZ/2);
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ret = usb_set_interface(p->udev, 0, BULK_ALTERNATE_IFACE);
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if (ret < 0)
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goto out;
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ret = set_tuner_mode(p, TLG_MODE_FM_RADIO);
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if (ret != 0)
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goto out;
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ret = send_set_req(p, SGNL_SRC_SEL, TLG_SIG_SRC_ANTENNA, &status);
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ret = send_set_req(p, TUNER_AUD_ANA_STD,
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p->radio_data.pre_emphasis, &status);
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ret |= send_set_req(p, TUNER_AUD_MODE,
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TLG_TUNE_TVAUDIO_MODE_STEREO, &status);
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ret |= send_set_req(p, AUDIO_SAMPLE_RATE_SEL,
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ATV_AUDIO_RATE_48K, &status);
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ret |= send_set_req(p, TUNE_FREQ_SELECT, TUNER_FREQ_MIN_FM, &status);
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out:
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return ret;
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}
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#ifdef CONFIG_PM
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static int pm_fm_suspend(struct poseidon *p)
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{
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logpm(p);
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pm_alsa_suspend(p);
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usb_set_interface(p->udev, 0, 0);
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msleep(300);
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return 0;
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}
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static int pm_fm_resume(struct poseidon *p)
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{
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logpm(p);
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poseidon_check_mode_radio(p);
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set_frequency(p, p->radio_data.fm_freq);
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pm_alsa_resume(p);
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return 0;
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}
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#endif
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static int poseidon_fm_open(struct file *filp)
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{
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struct video_device *vfd = video_devdata(filp);
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struct poseidon *p = video_get_drvdata(vfd);
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int ret = 0;
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if (!p)
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return -1;
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mutex_lock(&p->lock);
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if (p->state & POSEIDON_STATE_DISCONNECT) {
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ret = -ENODEV;
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goto out;
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}
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if (p->state && !(p->state & POSEIDON_STATE_FM)) {
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ret = -EBUSY;
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goto out;
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}
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usb_autopm_get_interface(p->interface);
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if (0 == p->state) {
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/* default pre-emphasis */
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if (p->radio_data.pre_emphasis == 0)
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p->radio_data.pre_emphasis = TLG_TUNE_ASTD_FM_EUR;
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set_debug_mode(vfd, debug_mode);
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ret = poseidon_check_mode_radio(p);
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if (ret < 0) {
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usb_autopm_put_interface(p->interface);
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goto out;
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}
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p->state |= POSEIDON_STATE_FM;
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}
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p->radio_data.users++;
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kref_get(&p->kref);
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filp->private_data = p;
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out:
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mutex_unlock(&p->lock);
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return ret;
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}
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static int poseidon_fm_close(struct file *filp)
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{
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struct poseidon *p = filp->private_data;
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struct radio_data *fm = &p->radio_data;
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uint32_t status;
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mutex_lock(&p->lock);
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fm->users--;
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if (0 == fm->users)
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p->state &= ~POSEIDON_STATE_FM;
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if (fm->is_radio_streaming && filp == p->file_for_stream) {
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fm->is_radio_streaming = 0;
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send_set_req(p, PLAY_SERVICE, TLG_TUNE_PLAY_SVC_STOP, &status);
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}
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usb_autopm_put_interface(p->interface);
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mutex_unlock(&p->lock);
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kref_put(&p->kref, poseidon_delete);
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filp->private_data = NULL;
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return 0;
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}
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static int vidioc_querycap(struct file *file, void *priv,
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struct v4l2_capability *v)
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{
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struct poseidon *p = file->private_data;
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strlcpy(v->driver, "tele-radio", sizeof(v->driver));
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strlcpy(v->card, "Telegent Poseidon", sizeof(v->card));
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usb_make_path(p->udev, v->bus_info, sizeof(v->bus_info));
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v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
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return 0;
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}
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static const struct v4l2_file_operations poseidon_fm_fops = {
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.owner = THIS_MODULE,
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.open = poseidon_fm_open,
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.release = poseidon_fm_close,
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.ioctl = video_ioctl2,
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};
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static int tlg_fm_vidioc_g_tuner(struct file *file, void *priv,
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struct v4l2_tuner *vt)
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{
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struct tuner_fm_sig_stat_s fm_stat = {};
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int ret, status, count = 5;
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struct poseidon *p = file->private_data;
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if (vt->index != 0)
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return -EINVAL;
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vt->type = V4L2_TUNER_RADIO;
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vt->capability = V4L2_TUNER_CAP_STEREO;
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vt->rangelow = TUNER_FREQ_MIN_FM / 62500;
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vt->rangehigh = TUNER_FREQ_MAX_FM / 62500;
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vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
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vt->audmode = V4L2_TUNER_MODE_STEREO;
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vt->signal = 0;
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vt->afc = 0;
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mutex_lock(&p->lock);
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ret = send_get_req(p, TUNER_STATUS, TLG_MODE_FM_RADIO,
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&fm_stat, &status, sizeof(fm_stat));
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while (fm_stat.sig_lock_busy && count-- && !ret) {
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout(HZ);
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ret = send_get_req(p, TUNER_STATUS, TLG_MODE_FM_RADIO,
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&fm_stat, &status, sizeof(fm_stat));
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}
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mutex_unlock(&p->lock);
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if (ret || status) {
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vt->signal = 0;
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} else if ((fm_stat.sig_present || fm_stat.sig_locked)
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&& fm_stat.sig_strength == 0) {
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vt->signal = 0xffff;
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} else
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vt->signal = (fm_stat.sig_strength * 255 / 10) << 8;
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return 0;
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}
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static int fm_get_freq(struct file *file, void *priv,
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struct v4l2_frequency *argp)
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{
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struct poseidon *p = file->private_data;
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argp->frequency = p->radio_data.fm_freq;
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return 0;
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}
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static int set_frequency(struct poseidon *p, __u32 frequency)
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{
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__u32 freq ;
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int ret, status;
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mutex_lock(&p->lock);
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ret = send_set_req(p, TUNER_AUD_ANA_STD,
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p->radio_data.pre_emphasis, &status);
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freq = (frequency * 125) * 500 / 1000;/* kHZ */
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if (freq < TUNER_FREQ_MIN_FM/1000 || freq > TUNER_FREQ_MAX_FM/1000) {
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ret = -EINVAL;
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goto error;
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}
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ret = send_set_req(p, TUNE_FREQ_SELECT, freq, &status);
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if (ret < 0)
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goto error ;
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ret = send_set_req(p, TAKE_REQUEST, 0, &status);
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout(HZ/4);
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if (!p->radio_data.is_radio_streaming) {
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ret = send_set_req(p, TAKE_REQUEST, 0, &status);
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ret = send_set_req(p, PLAY_SERVICE,
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TLG_TUNE_PLAY_SVC_START, &status);
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p->radio_data.is_radio_streaming = 1;
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}
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p->radio_data.fm_freq = frequency;
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error:
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mutex_unlock(&p->lock);
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return ret;
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}
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static int fm_set_freq(struct file *file, void *priv,
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struct v4l2_frequency *argp)
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{
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struct poseidon *p = file->private_data;
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p->file_for_stream = file;
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#ifdef CONFIG_PM
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p->pm_suspend = pm_fm_suspend;
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p->pm_resume = pm_fm_resume;
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#endif
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return set_frequency(p, argp->frequency);
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}
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static int tlg_fm_vidioc_g_ctrl(struct file *file, void *priv,
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struct v4l2_control *arg)
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{
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return 0;
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}
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static int tlg_fm_vidioc_g_exts_ctrl(struct file *file, void *fh,
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struct v4l2_ext_controls *ctrls)
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{
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struct poseidon *p = file->private_data;
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int i;
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if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
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return -EINVAL;
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for (i = 0; i < ctrls->count; i++) {
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struct v4l2_ext_control *ctrl = ctrls->controls + i;
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if (ctrl->id != V4L2_CID_TUNE_PREEMPHASIS)
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continue;
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if (i < MAX_PREEMPHASIS)
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ctrl->value = p->radio_data.pre_emphasis;
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}
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return 0;
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}
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static int tlg_fm_vidioc_s_exts_ctrl(struct file *file, void *fh,
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struct v4l2_ext_controls *ctrls)
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{
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int i;
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if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
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return -EINVAL;
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for (i = 0; i < ctrls->count; i++) {
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struct v4l2_ext_control *ctrl = ctrls->controls + i;
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if (ctrl->id != V4L2_CID_TUNE_PREEMPHASIS)
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continue;
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if (ctrl->value >= 0 && ctrl->value < MAX_PREEMPHASIS) {
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struct poseidon *p = file->private_data;
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int pre_emphasis = preemphasis[ctrl->value];
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u32 status;
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send_set_req(p, TUNER_AUD_ANA_STD,
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pre_emphasis, &status);
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p->radio_data.pre_emphasis = pre_emphasis;
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}
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}
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return 0;
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}
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static int tlg_fm_vidioc_s_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctrl)
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{
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return 0;
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}
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static int tlg_fm_vidioc_queryctrl(struct file *file, void *priv,
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struct v4l2_queryctrl *ctrl)
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{
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if (!(ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL))
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return -EINVAL;
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ctrl->id &= ~V4L2_CTRL_FLAG_NEXT_CTRL;
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if (ctrl->id != V4L2_CID_TUNE_PREEMPHASIS) {
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/* return the next supported control */
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ctrl->id = V4L2_CID_TUNE_PREEMPHASIS;
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v4l2_ctrl_query_fill(ctrl, V4L2_PREEMPHASIS_DISABLED,
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V4L2_PREEMPHASIS_75_uS, 1,
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V4L2_PREEMPHASIS_50_uS);
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ctrl->flags = V4L2_CTRL_FLAG_UPDATE;
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return 0;
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}
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return -EINVAL;
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}
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static int tlg_fm_vidioc_querymenu(struct file *file, void *fh,
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struct v4l2_querymenu *qmenu)
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{
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return v4l2_ctrl_query_menu(qmenu, NULL, NULL);
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}
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static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)
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{
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return vt->index > 0 ? -EINVAL : 0;
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}
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static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *va)
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{
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return (va->index != 0) ? -EINVAL : 0;
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}
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static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
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{
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a->index = 0;
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a->mode = 0;
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a->capability = V4L2_AUDCAP_STEREO;
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strcpy(a->name, "Radio");
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return 0;
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}
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static int vidioc_s_input(struct file *filp, void *priv, u32 i)
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{
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return (i != 0) ? -EINVAL : 0;
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}
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static int vidioc_g_input(struct file *filp, void *priv, u32 *i)
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{
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return (*i != 0) ? -EINVAL : 0;
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}
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static const struct v4l2_ioctl_ops poseidon_fm_ioctl_ops = {
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.vidioc_querycap = vidioc_querycap,
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.vidioc_g_audio = vidioc_g_audio,
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.vidioc_s_audio = vidioc_s_audio,
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.vidioc_g_input = vidioc_g_input,
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.vidioc_s_input = vidioc_s_input,
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.vidioc_queryctrl = tlg_fm_vidioc_queryctrl,
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.vidioc_querymenu = tlg_fm_vidioc_querymenu,
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.vidioc_g_ctrl = tlg_fm_vidioc_g_ctrl,
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.vidioc_s_ctrl = tlg_fm_vidioc_s_ctrl,
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.vidioc_s_ext_ctrls = tlg_fm_vidioc_s_exts_ctrl,
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.vidioc_g_ext_ctrls = tlg_fm_vidioc_g_exts_ctrl,
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.vidioc_s_tuner = vidioc_s_tuner,
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.vidioc_g_tuner = tlg_fm_vidioc_g_tuner,
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.vidioc_g_frequency = fm_get_freq,
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.vidioc_s_frequency = fm_set_freq,
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};
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static struct video_device poseidon_fm_template = {
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.name = "Telegent-Radio",
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.fops = &poseidon_fm_fops,
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.minor = -1,
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.release = video_device_release,
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.ioctl_ops = &poseidon_fm_ioctl_ops,
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};
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int poseidon_fm_init(struct poseidon *p)
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{
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struct video_device *fm_dev;
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fm_dev = vdev_init(p, &poseidon_fm_template);
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if (fm_dev == NULL)
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return -1;
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if (video_register_device(fm_dev, VFL_TYPE_RADIO, -1) < 0) {
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video_device_release(fm_dev);
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return -1;
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}
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p->radio_data.fm_dev = fm_dev;
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return 0;
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}
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int poseidon_fm_exit(struct poseidon *p)
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{
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destroy_video_device(&p->radio_data.fm_dev);
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return 0;
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}
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