[mirror_ubuntu-bionic-kernel.git] / drivers / media / video / tlg2300 / pd-radio.c

#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);

#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->version = KERNEL_VERSION(0, 0, 1);
	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,
};

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;

	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;
}

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);
}

int tlg_fm_vidioc_g_ctrl(struct file *file, void *priv,
		struct v4l2_control *arg)
{
	return 0;
}

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;
}

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;
}

int tlg_fm_vidioc_s_ctrl(struct file *file, void *priv,
		struct v4l2_control *ctrl)
{
	return 0;
}

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;
}

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, 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;
}
Commit	Line	Data
5b3f03f0 HS	1	#include <linux/init.h>
	2	#include <linux/list.h>
	3	#include <linux/module.h>
	4	#include <linux/kernel.h>
	5	#include <linux/bitmap.h>
	6	#include <linux/usb.h>
	7	#include <linux/i2c.h>
	8	#include <media/v4l2-dev.h>
	9	#include <linux/version.h>
	10	#include <linux/mm.h>
	11	#include <linux/mutex.h>
	12	#include <media/v4l2-ioctl.h>
	13	#include <linux/sched.h>
	14
	15	#include "pd-common.h"
	16	#include "vendorcmds.h"
	17
	18	static int set_frequency(struct poseidon *p, __u32 frequency);
	19	static int poseidon_fm_close(struct file *filp);
	20	static int poseidon_fm_open(struct file *filp);
	21
	22	#define TUNER_FREQ_MIN_FM 76000000
	23	#define TUNER_FREQ_MAX_FM 108000000
	24
007ad830 HS	25	#define MAX_PREEMPHASIS (V4L2_PREEMPHASIS_75_uS + 1)
	26	static int preemphasis[MAX_PREEMPHASIS] = {
	27	TLG_TUNE_ASTD_NONE, /* V4L2_PREEMPHASIS_DISABLED */
	28	TLG_TUNE_ASTD_FM_EUR, /* V4L2_PREEMPHASIS_50_uS */
	29	TLG_TUNE_ASTD_FM_US, /* V4L2_PREEMPHASIS_75_uS */
	30	};
	31
5b3f03f0 HS	32	static int poseidon_check_mode_radio(struct poseidon *p)
5b3f03f0 HS	33	{
007ad830	34	int ret;
5b3f03f0 HS	35	u32 status;
	36
	37	set_current_state(TASK_INTERRUPTIBLE);
	38	schedule_timeout(HZ/2);
	39	ret = usb_set_interface(p->udev, 0, BULK_ALTERNATE_IFACE);
	40	if (ret < 0)
	41	goto out;
	42
	43	ret = set_tuner_mode(p, TLG_MODE_FM_RADIO);
	44	if (ret != 0)
	45	goto out;
	46
	47	ret = send_set_req(p, SGNL_SRC_SEL, TLG_SIG_SRC_ANTENNA, &status);
007ad830 HS	48	ret = send_set_req(p, TUNER_AUD_ANA_STD,
007ad830 HS	49	p->radio_data.pre_emphasis, &status);
5b3f03f0 HS	50	ret \|= send_set_req(p, TUNER_AUD_MODE,
	51	TLG_TUNE_TVAUDIO_MODE_STEREO, &status);
	52	ret \|= send_set_req(p, AUDIO_SAMPLE_RATE_SEL,
	53	ATV_AUDIO_RATE_48K, &status);
	54	ret \|= send_set_req(p, TUNE_FREQ_SELECT, TUNER_FREQ_MIN_FM, &status);
	55	out:
	56	return ret;
	57	}
	58
	59	#ifdef CONFIG_PM
	60	static int pm_fm_suspend(struct poseidon *p)
	61	{
	62	logpm(p);
	63	pm_alsa_suspend(p);
	64	usb_set_interface(p->udev, 0, 0);
	65	msleep(300);
	66	return 0;
	67	}
	68
	69	static int pm_fm_resume(struct poseidon *p)
	70	{
	71	logpm(p);
	72	poseidon_check_mode_radio(p);
	73	set_frequency(p, p->radio_data.fm_freq);
	74	pm_alsa_resume(p);
	75	return 0;
	76	}
	77	#endif
	78
	79	static int poseidon_fm_open(struct file *filp)
	80	{
	81	struct video_device *vfd = video_devdata(filp);
	82	struct poseidon *p = video_get_drvdata(vfd);
	83	int ret = 0;
	84
	85	if (!p)
	86	return -1;
	87
	88	mutex_lock(&p->lock);
	89	if (p->state & POSEIDON_STATE_DISCONNECT) {
	90	ret = -ENODEV;
	91	goto out;
	92	}
	93
	94	if (p->state && !(p->state & POSEIDON_STATE_FM)) {
	95	ret = -EBUSY;
	96	goto out;
	97	}
	98
	99	usb_autopm_get_interface(p->interface);
	100	if (0 == p->state) {
007ad830 HS	101	/* default pre-emphasis */
	102	if (p->radio_data.pre_emphasis == 0)
	103	p->radio_data.pre_emphasis = TLG_TUNE_ASTD_FM_EUR;
5b3f03f0 HS	104	set_debug_mode(vfd, debug_mode);
	105
	106	ret = poseidon_check_mode_radio(p);
	107	if (ret < 0) {
	108	usb_autopm_put_interface(p->interface);
	109	goto out;
	110	}
	111	p->state \|= POSEIDON_STATE_FM;
	112	}
	113	p->radio_data.users++;
	114	kref_get(&p->kref);
	115	filp->private_data = p;
	116	out:
	117	mutex_unlock(&p->lock);
	118	return ret;
	119	}
	120
	121	static int poseidon_fm_close(struct file *filp)
	122	{
	123	struct poseidon *p = filp->private_data;
	124	struct radio_data *fm = &p->radio_data;
	125	uint32_t status;
	126
	127	mutex_lock(&p->lock);
	128	fm->users--;
	129	if (0 == fm->users)
	130	p->state &= ~POSEIDON_STATE_FM;
	131
	132	if (fm->is_radio_streaming && filp == p->file_for_stream) {
	133	fm->is_radio_streaming = 0;
	134	send_set_req(p, PLAY_SERVICE, TLG_TUNE_PLAY_SVC_STOP, &status);
	135	}
	136	usb_autopm_put_interface(p->interface);
	137	mutex_unlock(&p->lock);
	138
	139	kref_put(&p->kref, poseidon_delete);
	140	filp->private_data = NULL;
	141	return 0;
	142	}
	143
	144	static int vidioc_querycap(struct file file, void priv,
	145	struct v4l2_capability *v)
	146	{
	147	struct poseidon *p = file->private_data;
	148
	149	strlcpy(v->driver, "tele-radio", sizeof(v->driver));
	150	strlcpy(v->card, "Telegent Poseidon", sizeof(v->card));
	151	usb_make_path(p->udev, v->bus_info, sizeof(v->bus_info));
	152	v->version = KERNEL_VERSION(0, 0, 1);
	153	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
	154	return 0;
	155	}
	156
	157	static const struct v4l2_file_operations poseidon_fm_fops = {
	158	.owner = THIS_MODULE,
	159	.open = poseidon_fm_open,
	160	.release = poseidon_fm_close,
	161	.ioctl = video_ioctl2,
	162	};
	163
	164	int tlg_fm_vidioc_g_tuner(struct file file, void priv, struct v4l2_tuner *vt)
	165	{
	166	struct tuner_fm_sig_stat_s fm_stat = {};
	167	int ret, status, count = 5;
168	struct poseidon *p = file->private_data;
169
170	if (vt->index != 0)
171	return -EINVAL;
172
173	vt->type = V4L2_TUNER_RADIO;
174	vt->capability = V4L2_TUNER_CAP_STEREO;
175	vt->rangelow = TUNER_FREQ_MIN_FM / 62500;
176	vt->rangehigh = TUNER_FREQ_MAX_FM / 62500;
177	vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
178	vt->audmode = V4L2_TUNER_MODE_STEREO;
179	vt->signal = 0;
180	vt->afc = 0;
181
182	mutex_lock(&p->lock);
183	ret = send_get_req(p, TUNER_STATUS, TLG_MODE_FM_RADIO,
184	&fm_stat, &status, sizeof(fm_stat));
185
186	while (fm_stat.sig_lock_busy && count-- && !ret) {
187	set_current_state(TASK_INTERRUPTIBLE);
188	schedule_timeout(HZ);
189
190	ret = send_get_req(p, TUNER_STATUS, TLG_MODE_FM_RADIO,
191	&fm_stat, &status, sizeof(fm_stat));
192	}
193	mutex_unlock(&p->lock);
194
195	if (ret \|\| status) {
196	vt->signal = 0;
197	} else if ((fm_stat.sig_present \|\| fm_stat.sig_locked)
198	&& fm_stat.sig_strength == 0) {
199	vt->signal = 0xffff;
200	} else
201	vt->signal = (fm_stat.sig_strength * 255 / 10) << 8;
202
203	return 0;
204	}
205
206	int fm_get_freq(struct file file, void priv, struct v4l2_frequency *argp)
207	{
208	struct poseidon *p = file->private_data;
209
210	argp->frequency = p->radio_data.fm_freq;
211	return 0;
212	}
213
214	static int set_frequency(struct poseidon *p, __u32 frequency)
215	{
216	__u32 freq ;
007ad830	217	int ret, status;
5b3f03f0 HS	218
	219	mutex_lock(&p->lock);
	220
007ad830 HS	221	ret = send_set_req(p, TUNER_AUD_ANA_STD,
007ad830 HS	222	p->radio_data.pre_emphasis, &status);
5b3f03f0 HS	223
	224	freq = (frequency * 125) * 500 / 1000;/* kHZ */
	225	if (freq < TUNER_FREQ_MIN_FM/1000 \|\| freq > TUNER_FREQ_MAX_FM/1000) {
	226	ret = -EINVAL;
	227	goto error;
	228	}
	229
	230	ret = send_set_req(p, TUNE_FREQ_SELECT, freq, &status);
	231	if (ret < 0)
	232	goto error ;
	233	ret = send_set_req(p, TAKE_REQUEST, 0, &status);
	234
	235	set_current_state(TASK_INTERRUPTIBLE);
	236	schedule_timeout(HZ/4);
	237	if (!p->radio_data.is_radio_streaming) {
	238	ret = send_set_req(p, TAKE_REQUEST, 0, &status);
	239	ret = send_set_req(p, PLAY_SERVICE,
	240	TLG_TUNE_PLAY_SVC_START, &status);
	241	p->radio_data.is_radio_streaming = 1;
	242	}
	243	p->radio_data.fm_freq = frequency;
	244	error:
	245	mutex_unlock(&p->lock);
	246	return ret;
	247	}
	248
	249	int fm_set_freq(struct file file, void priv, struct v4l2_frequency *argp)
	250	{
	251	struct poseidon *p = file->private_data;
	252
	253	p->file_for_stream = file;
	254	#ifdef CONFIG_PM
	255	p->pm_suspend = pm_fm_suspend;
	256	p->pm_resume = pm_fm_resume;
	257	#endif
	258	return set_frequency(p, argp->frequency);
	259	}
	260
	261	int tlg_fm_vidioc_g_ctrl(struct file file, void priv,
	262	struct v4l2_control *arg)
	263	{
007ad830 HS	264	return 0;
	265	}
	266
	267	int tlg_fm_vidioc_g_exts_ctrl(struct file file, void fh,
	268	struct v4l2_ext_controls *ctrls)
	269	{
	270	struct poseidon *p = file->private_data;
	271	int i;
	272
	273	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
	274	return -EINVAL;
	275
	276	for (i = 0; i < ctrls->count; i++) {
	277	struct v4l2_ext_control *ctrl = ctrls->controls + i;
	278
	279	if (ctrl->id != V4L2_CID_TUNE_PREEMPHASIS)
	280	continue;
	281
	282	if (i < MAX_PREEMPHASIS)
	283	ctrl->value = p->radio_data.pre_emphasis;
	284	}
	285	return 0;
5b3f03f0 HS	286	}
5b3f03f0 HS	287
007ad830 HS	288	int tlg_fm_vidioc_s_exts_ctrl(struct file file, void fh,
007ad830 HS	289	struct v4l2_ext_controls *ctrls)
5b3f03f0	290	{
007ad830 HS	291	int i;
	292
	293	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
	294	return -EINVAL;
	295
	296	for (i = 0; i < ctrls->count; i++) {
	297	struct v4l2_ext_control *ctrl = ctrls->controls + i;
	298
	299	if (ctrl->id != V4L2_CID_TUNE_PREEMPHASIS)
	300	continue;
	301
	302	if (ctrl->value >= 0 && ctrl->value < MAX_PREEMPHASIS) {
	303	struct poseidon *p = file->private_data;
	304	int pre_emphasis = preemphasis[ctrl->value];
	305	u32 status;
	306
	307	send_set_req(p, TUNER_AUD_ANA_STD,
	308	pre_emphasis, &status);
	309	p->radio_data.pre_emphasis = pre_emphasis;
	310	}
	311	}
	312	return 0;
5b3f03f0 HS	313	}
	314
	315	int tlg_fm_vidioc_s_ctrl(struct file file, void priv,
007ad830	316	struct v4l2_control *ctrl)
5b3f03f0	317	{
007ad830	318	return 0;
5b3f03f0 HS	319	}
	320
	321	int tlg_fm_vidioc_queryctrl(struct file file, void priv,
007ad830	322	struct v4l2_queryctrl *ctrl)
5b3f03f0	323	{
007ad830 HS	324	if (!(ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL))
	325	return -EINVAL;
	326
	327	ctrl->id &= ~V4L2_CTRL_FLAG_NEXT_CTRL;
	328	if (ctrl->id != V4L2_CID_TUNE_PREEMPHASIS) {
	329	/* return the next supported control */
	330	ctrl->id = V4L2_CID_TUNE_PREEMPHASIS;
	331	v4l2_ctrl_query_fill(ctrl, V4L2_PREEMPHASIS_DISABLED,
	332	V4L2_PREEMPHASIS_75_uS, 1,
	333	V4L2_PREEMPHASIS_50_uS);
	334	ctrl->flags = V4L2_CTRL_FLAG_UPDATE;
	335	return 0;
	336	}
	337	return -EINVAL;
	338	}
	339
	340	int tlg_fm_vidioc_querymenu(struct file file, void fh,
	341	struct v4l2_querymenu *qmenu)
	342	{
	343	return v4l2_ctrl_query_menu(qmenu, NULL, NULL);
5b3f03f0 HS	344	}
	345
	346	static int vidioc_s_tuner(struct file file, void priv, struct v4l2_tuner *vt)
	347	{
	348	return vt->index > 0 ? -EINVAL : 0;
	349	}
	350	static int vidioc_s_audio(struct file file, void priv, struct v4l2_audio *va)
	351	{
	352	return (va->index != 0) ? -EINVAL : 0;
	353	}
	354
	355	static int vidioc_g_audio(struct file file, void priv, struct v4l2_audio *a)
	356	{
	357	a->index = 0;
	358	a->mode = 0;
	359	a->capability = V4L2_AUDCAP_STEREO;
	360	strcpy(a->name, "Radio");
	361	return 0;
	362	}
	363
	364	static int vidioc_s_input(struct file filp, void priv, u32 i)
	365	{
	366	return (i != 0) ? -EINVAL : 0;
	367	}
	368
	369	static int vidioc_g_input(struct file filp, void priv, u32 *i)
	370	{
	371	return (*i != 0) ? -EINVAL : 0;
	372	}
	373
	374	static const struct v4l2_ioctl_ops poseidon_fm_ioctl_ops = {
	375	.vidioc_querycap = vidioc_querycap,
	376	.vidioc_g_audio = vidioc_g_audio,
	377	.vidioc_s_audio = vidioc_s_audio,
	378	.vidioc_g_input = vidioc_g_input,
	379	.vidioc_s_input = vidioc_s_input,
	380	.vidioc_queryctrl = tlg_fm_vidioc_queryctrl,
007ad830	381	.vidioc_querymenu = tlg_fm_vidioc_querymenu,
5b3f03f0 HS	382	.vidioc_g_ctrl = tlg_fm_vidioc_g_ctrl,
5b3f03f0 HS	383	.vidioc_s_ctrl = tlg_fm_vidioc_s_ctrl,
007ad830 HS	384	.vidioc_s_ext_ctrls = tlg_fm_vidioc_s_exts_ctrl,
007ad830 HS	385	.vidioc_g_ext_ctrls = tlg_fm_vidioc_g_exts_ctrl,
5b3f03f0 HS	386	.vidioc_s_tuner = vidioc_s_tuner,
	387	.vidioc_g_tuner = tlg_fm_vidioc_g_tuner,
	388	.vidioc_g_frequency = fm_get_freq,
	389	.vidioc_s_frequency = fm_set_freq,
	390	};
	391
	392	static struct video_device poseidon_fm_template = {
	393	.name = "Telegent-Radio",
	394	.fops = &poseidon_fm_fops,
	395	.minor = -1,
	396	.release = video_device_release,
	397	.ioctl_ops = &poseidon_fm_ioctl_ops,
	398	};
	399
	400	int poseidon_fm_init(struct poseidon *p)
	401	{
	402	struct video_device *fm_dev;
	403
	404	fm_dev = vdev_init(p, &poseidon_fm_template);
	405	if (fm_dev == NULL)
	406	return -1;
	407
	408	if (video_register_device(fm_dev, VFL_TYPE_RADIO, -1) < 0) {
	409	video_device_release(fm_dev);
	410	return -1;
	411	}
	412	p->radio_data.fm_dev = fm_dev;
	413	return 0;
	414	}
	415
	416	int poseidon_fm_exit(struct poseidon *p)
	417	{
	418	destroy_video_device(&p->radio_data.fm_dev);
	419	return 0;
	420	}