[deliverable/linux.git] / drivers / media / radio / radio-trust.c

/* radio-trust.c - Trust FM Radio card driver for Linux 2.2
 * by Eric Lammerts <eric@scintilla.utwente.nl>
 *
 * Based on radio-aztech.c. Original notes:
 *
 * Adapted to support the Video for Linux API by
 * Russell Kroll <rkroll@exploits.org>.  Based on original tuner code by:
 *
 * Quay Ly
 * Donald Song
 * Jason Lewis      (jlewis@twilight.vtc.vsc.edu)
 * Scott McGrath    (smcgrath@twilight.vtc.vsc.edu)
 * William McGrath  (wmcgrath@twilight.vtc.vsc.edu)
 *
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 */

#include <stdarg.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>

#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#define RADIO_VERSION KERNEL_VERSION(0,0,2)

static struct v4l2_queryctrl radio_qctrl[] = {
	{
		.id            = V4L2_CID_AUDIO_MUTE,
		.name          = "Mute",
		.minimum       = 0,
		.maximum       = 1,
		.default_value = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_AUDIO_VOLUME,
		.name          = "Volume",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 2048,
		.default_value = 65535,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_AUDIO_BASS,
		.name          = "Bass",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 4370,
		.default_value = 32768,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},{
		.id            = V4L2_CID_AUDIO_TREBLE,
		.name          = "Treble",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 4370,
		.default_value = 32768,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	},
};

/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */

#ifndef CONFIG_RADIO_TRUST_PORT
#define CONFIG_RADIO_TRUST_PORT -1
#endif

static int io = CONFIG_RADIO_TRUST_PORT;
static int radio_nr = -1;
static int ioval = 0xf;
static __u16 curvol;
static __u16 curbass;
static __u16 curtreble;
static unsigned long curfreq;
static int curstereo;
static int curmute;
static unsigned long in_use;

/* i2c addresses */
#define TDA7318_ADDR 0x88
#define TSA6060T_ADDR 0xc4

#define TR_DELAY do { inb(io); inb(io); inb(io); } while(0)
#define TR_SET_SCL outb(ioval |= 2, io)
#define TR_CLR_SCL outb(ioval &= 0xfd, io)
#define TR_SET_SDA outb(ioval |= 1, io)
#define TR_CLR_SDA outb(ioval &= 0xfe, io)

static void write_i2c(int n, ...)
{
	unsigned char val, mask;
	va_list args;

	va_start(args, n);

	/* start condition */
	TR_SET_SDA;
	TR_SET_SCL;
	TR_DELAY;
	TR_CLR_SDA;
	TR_CLR_SCL;
	TR_DELAY;

	for(; n; n--) {
		val = va_arg(args, unsigned);
		for(mask = 0x80; mask; mask >>= 1) {
			if(val & mask)
				TR_SET_SDA;
			else
				TR_CLR_SDA;
			TR_SET_SCL;
			TR_DELAY;
			TR_CLR_SCL;
			TR_DELAY;
		}
		/* acknowledge bit */
		TR_SET_SDA;
		TR_SET_SCL;
		TR_DELAY;
		TR_CLR_SCL;
		TR_DELAY;
	}

	/* stop condition */
	TR_CLR_SDA;
	TR_DELAY;
	TR_SET_SCL;
	TR_DELAY;
	TR_SET_SDA;
	TR_DELAY;

	va_end(args);
}

static void tr_setvol(__u16 vol)
{
	curvol = vol / 2048;
	write_i2c(2, TDA7318_ADDR, curvol ^ 0x1f);
}

static int basstreble2chip[15] = {
	0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8
};

static void tr_setbass(__u16 bass)
{
	curbass = bass / 4370;
	write_i2c(2, TDA7318_ADDR, 0x60 | basstreble2chip[curbass]);
}

static void tr_settreble(__u16 treble)
{
	curtreble = treble / 4370;
	write_i2c(2, TDA7318_ADDR, 0x70 | basstreble2chip[curtreble]);
}

static void tr_setstereo(int stereo)
{
	curstereo = !!stereo;
	ioval = (ioval & 0xfb) | (!curstereo << 2);
	outb(ioval, io);
}

static void tr_setmute(int mute)
{
	curmute = !!mute;
	ioval = (ioval & 0xf7) | (curmute << 3);
	outb(ioval, io);
}

static int tr_getsigstr(void)
{
	int i, v;

	for(i = 0, v = 0; i < 100; i++) v |= inb(io);
	return (v & 1)? 0 : 0xffff;
}

static int tr_getstereo(void)
{
	/* don't know how to determine it, just return the setting */
	return curstereo;
}

static void tr_setfreq(unsigned long f)
{
	f /= 160;	/* Convert to 10 kHz units	*/
	f += 1070;	/* Add 10.7 MHz IF			*/

	write_i2c(5, TSA6060T_ADDR, (f << 1) | 1, f >> 7, 0x60 | ((f >> 15) & 1), 0);
}

static int vidioc_querycap(struct file *file, void *priv,
				struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-trust", sizeof(v->driver));
	strlcpy(v->card, "Trust FM Radio", sizeof(v->card));
	sprintf(v->bus_info, "ISA");
	v->version = RADIO_VERSION;
	v->capabilities = V4L2_CAP_TUNER;
	return 0;
}

static int vidioc_g_tuner(struct file *file, void *priv,
				struct v4l2_tuner *v)
{
	if (v->index > 0)
		return -EINVAL;

	strcpy(v->name, "FM");
	v->type = V4L2_TUNER_RADIO;
	v->rangelow = (87.5*16000);
	v->rangehigh = (108*16000);
	v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
	v->capability = V4L2_TUNER_CAP_LOW;
	if (tr_getstereo())
		v->audmode = V4L2_TUNER_MODE_STEREO;
	else
		v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal = tr_getsigstr();
	return 0;
}

static int vidioc_s_tuner(struct file *file, void *priv,
				struct v4l2_tuner *v)
{
	if (v->index > 0)
		return -EINVAL;

	return 0;
}

static int vidioc_s_frequency(struct file *file, void *priv,
				struct v4l2_frequency *f)
{
	curfreq = f->frequency;
	tr_setfreq(curfreq);
	return 0;
}

static int vidioc_g_frequency(struct file *file, void *priv,
				struct v4l2_frequency *f)
{
	f->type = V4L2_TUNER_RADIO;
	f->frequency = curfreq;
	return 0;
}

static int vidioc_queryctrl(struct file *file, void *priv,
				struct v4l2_queryctrl *qc)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
		if (qc->id && qc->id == radio_qctrl[i].id) {
			memcpy(qc, &(radio_qctrl[i]),
						sizeof(*qc));
			return 0;
		}
	}
	return -EINVAL;
}

static int vidioc_g_ctrl(struct file *file, void *priv,
				struct v4l2_control *ctrl)
{
	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		ctrl->value = curmute;
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		ctrl->value = curvol * 2048;
		return 0;
	case V4L2_CID_AUDIO_BASS:
		ctrl->value = curbass * 4370;
		return 0;
	case V4L2_CID_AUDIO_TREBLE:
		ctrl->value = curtreble * 4370;
		return 0;
	}
	return -EINVAL;
}

static int vidioc_s_ctrl(struct file *file, void *priv,
				struct v4l2_control *ctrl)
{
	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		tr_setmute(ctrl->value);
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		tr_setvol(ctrl->value);
		return 0;
	case V4L2_CID_AUDIO_BASS:
		tr_setbass(ctrl->value);
		return 0;
	case V4L2_CID_AUDIO_TREBLE:
		tr_settreble(ctrl->value);
		return 0;
	}
	return -EINVAL;
}

static int vidioc_g_audio(struct file *file, void *priv,
				struct v4l2_audio *a)
{
	if (a->index > 1)
		return -EINVAL;

	strcpy(a->name, "Radio");
	a->capability = V4L2_AUDCAP_STEREO;
	return 0;
}

static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
{
	*i = 0;
	return 0;
}

static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
{
	if (i != 0)
		return -EINVAL;
	return 0;
}

static int vidioc_s_audio(struct file *file, void *priv,
				struct v4l2_audio *a)
{
	if (a->index != 0)
		return -EINVAL;
	return 0;
}

static int trust_exclusive_open(struct file *file)
{
	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
}

static int trust_exclusive_release(struct file *file)
{
	clear_bit(0, &in_use);
	return 0;
}

static const struct v4l2_file_operations trust_fops = {
	.owner		= THIS_MODULE,
	.open           = trust_exclusive_open,
	.release        = trust_exclusive_release,
	.ioctl		= video_ioctl2,
};

static const struct v4l2_ioctl_ops trust_ioctl_ops = {
	.vidioc_querycap    = vidioc_querycap,
	.vidioc_g_tuner     = vidioc_g_tuner,
	.vidioc_s_tuner     = vidioc_s_tuner,
	.vidioc_g_frequency = vidioc_g_frequency,
	.vidioc_s_frequency = vidioc_s_frequency,
	.vidioc_queryctrl   = vidioc_queryctrl,
	.vidioc_g_ctrl      = vidioc_g_ctrl,
	.vidioc_s_ctrl      = vidioc_s_ctrl,
	.vidioc_g_audio     = vidioc_g_audio,
	.vidioc_s_audio     = vidioc_s_audio,
	.vidioc_g_input     = vidioc_g_input,
	.vidioc_s_input     = vidioc_s_input,
};

static struct video_device trust_radio = {
	.name		= "Trust FM Radio",
	.fops           = &trust_fops,
	.ioctl_ops 	= &trust_ioctl_ops,
	.release	= video_device_release_empty,
};

static int __init trust_init(void)
{
	if(io == -1) {
		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
		return -EINVAL;
	}
	if(!request_region(io, 2, "Trust FM Radio")) {
		printk(KERN_ERR "trust: port 0x%x already in use\n", io);
		return -EBUSY;
	}
	if (video_register_device(&trust_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
		release_region(io, 2);
		return -EINVAL;
	}

	printk(KERN_INFO "Trust FM Radio card driver v1.0.\n");

	write_i2c(2, TDA7318_ADDR, 0x80);	/* speaker att. LF = 0 dB */
	write_i2c(2, TDA7318_ADDR, 0xa0);	/* speaker att. RF = 0 dB */
	write_i2c(2, TDA7318_ADDR, 0xc0);	/* speaker att. LR = 0 dB */
	write_i2c(2, TDA7318_ADDR, 0xe0);	/* speaker att. RR = 0 dB */
	write_i2c(2, TDA7318_ADDR, 0x40);	/* stereo 1 input, gain = 18.75 dB */

	tr_setvol(0x8000);
	tr_setbass(0x8000);
	tr_settreble(0x8000);
	tr_setstereo(1);

	/* mute card - prevents noisy bootups */
	tr_setmute(1);

	return 0;
}

MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
MODULE_DESCRIPTION("A driver for the Trust FM Radio card.");
MODULE_LICENSE("GPL");

module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the Trust FM Radio card (0x350 or 0x358)");
module_param(radio_nr, int, 0);

static void __exit cleanup_trust_module(void)
{
	video_unregister_device(&trust_radio);
	release_region(io, 2);
}

module_init(trust_init);
module_exit(cleanup_trust_module);
Commit	Line	Data
4286c6f6	1	/* radio-trust.c - Trust FM Radio card driver for Linux 2.2
1da177e4 LT	2	* by Eric Lammerts <eric@scintilla.utwente.nl>
	3	*
	4	* Based on radio-aztech.c. Original notes:
	5	*
4286c6f6	6	* Adapted to support the Video for Linux API by
1da177e4 LT	7	* Russell Kroll <rkroll@exploits.org>. Based on original tuner code by:
	8	*
	9	* Quay Ly
	10	* Donald Song
4286c6f6	11	* Jason Lewis (jlewis@twilight.vtc.vsc.edu)
1da177e4 LT	12	* Scott McGrath (smcgrath@twilight.vtc.vsc.edu)
	13	* William McGrath (wmcgrath@twilight.vtc.vsc.edu)
	14	*
982eddb9	15	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	16	*/
	17
	18	#include <stdarg.h>
	19	#include <linux/module.h>
	20	#include <linux/init.h>
	21	#include <linux/ioport.h>
	22	#include <asm/io.h>
	23	#include <asm/uaccess.h>
982eddb9	24	#include <linux/videodev2.h>
5e87efa3	25	#include <media/v4l2-common.h>
35ea11ff	26	#include <media/v4l2-ioctl.h>
1da177e4	27
982eddb9 MCC	28	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	29	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
	30
	31	static struct v4l2_queryctrl radio_qctrl[] = {
	32	{
	33	.id = V4L2_CID_AUDIO_MUTE,
	34	.name = "Mute",
	35	.minimum = 0,
	36	.maximum = 1,
	37	.default_value = 1,
	38	.type = V4L2_CTRL_TYPE_BOOLEAN,
	39	},{
	40	.id = V4L2_CID_AUDIO_VOLUME,
	41	.name = "Volume",
	42	.minimum = 0,
	43	.maximum = 65535,
	44	.step = 2048,
	45	.default_value = 65535,
	46	.type = V4L2_CTRL_TYPE_INTEGER,
	47	},{
	48	.id = V4L2_CID_AUDIO_BASS,
	49	.name = "Bass",
	50	.minimum = 0,
	51	.maximum = 65535,
	52	.step = 4370,
	53	.default_value = 32768,
	54	.type = V4L2_CTRL_TYPE_INTEGER,
	55	},{
	56	.id = V4L2_CID_AUDIO_TREBLE,
	57	.name = "Treble",
	58	.minimum = 0,
	59	.maximum = 65535,
	60	.step = 4370,
	61	.default_value = 32768,
	62	.type = V4L2_CTRL_TYPE_INTEGER,
	63	},
	64	};
	65
1da177e4 LT	66	/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
	67
	68	#ifndef CONFIG_RADIO_TRUST_PORT
	69	#define CONFIG_RADIO_TRUST_PORT -1
	70	#endif
	71
4286c6f6	72	static int io = CONFIG_RADIO_TRUST_PORT;
1da177e4 LT	73	static int radio_nr = -1;
	74	static int ioval = 0xf;
	75	static __u16 curvol;
	76	static __u16 curbass;
	77	static __u16 curtreble;
	78	static unsigned long curfreq;
	79	static int curstereo;
	80	static int curmute;
3ca685aa	81	static unsigned long in_use;
1da177e4 LT	82
	83	/* i2c addresses */
	84	#define TDA7318_ADDR 0x88
	85	#define TSA6060T_ADDR 0xc4
	86
	87	#define TR_DELAY do { inb(io); inb(io); inb(io); } while(0)
	88	#define TR_SET_SCL outb(ioval \|= 2, io)
	89	#define TR_CLR_SCL outb(ioval &= 0xfd, io)
	90	#define TR_SET_SDA outb(ioval \|= 1, io)
	91	#define TR_CLR_SDA outb(ioval &= 0xfe, io)
	92
	93	static void write_i2c(int n, ...)
	94	{
	95	unsigned char val, mask;
	96	va_list args;
	97
	98	va_start(args, n);
	99
	100	/* start condition */
	101	TR_SET_SDA;
	102	TR_SET_SCL;
	103	TR_DELAY;
	104	TR_CLR_SDA;
	105	TR_CLR_SCL;
	106	TR_DELAY;
	107
	108	for(; n; n--) {
	109	val = va_arg(args, unsigned);
	110	for(mask = 0x80; mask; mask >>= 1) {
	111	if(val & mask)
	112	TR_SET_SDA;
	113	else
	114	TR_CLR_SDA;
	115	TR_SET_SCL;
	116	TR_DELAY;
	117	TR_CLR_SCL;
	118	TR_DELAY;
	119	}
	120	/* acknowledge bit */
	121	TR_SET_SDA;
	122	TR_SET_SCL;
	123	TR_DELAY;
	124	TR_CLR_SCL;
	125	TR_DELAY;
	126	}
	127
	128	/* stop condition */
	129	TR_CLR_SDA;
	130	TR_DELAY;
	131	TR_SET_SCL;
	132	TR_DELAY;
	133	TR_SET_SDA;
	134	TR_DELAY;
	135
	136	va_end(args);
	137	}
	138
	139	static void tr_setvol(__u16 vol)
	140	{
	141	curvol = vol / 2048;
	142	write_i2c(2, TDA7318_ADDR, curvol ^ 0x1f);
	143	}
	144
	145	static int basstreble2chip[15] = {
146	0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8
147	};
148
149	static void tr_setbass(__u16 bass)
150	{
151	curbass = bass / 4370;
152	write_i2c(2, TDA7318_ADDR, 0x60 \| basstreble2chip[curbass]);
153	}
154
155	static void tr_settreble(__u16 treble)
156	{
157	curtreble = treble / 4370;
158	write_i2c(2, TDA7318_ADDR, 0x70 \| basstreble2chip[curtreble]);
159	}
160
161	static void tr_setstereo(int stereo)
162	{
163	curstereo = !!stereo;
164	ioval = (ioval & 0xfb) \| (!curstereo << 2);
165	outb(ioval, io);
166	}
167
168	static void tr_setmute(int mute)
169	{
170	curmute = !!mute;
171	ioval = (ioval & 0xf7) \| (curmute << 3);
172	outb(ioval, io);
173	}
174
175	static int tr_getsigstr(void)
176	{
177	int i, v;
4286c6f6	178
1da177e4 LT	179	for(i = 0, v = 0; i < 100; i++) v \|= inb(io);
	180	return (v & 1)? 0 : 0xffff;
	181	}
	182
	183	static int tr_getstereo(void)
	184	{
	185	/* don't know how to determine it, just return the setting */
	186	return curstereo;
	187	}
	188
	189	static void tr_setfreq(unsigned long f)
	190	{
	191	f /= 160; /* Convert to 10 kHz units */
	192	f += 1070; /* Add 10.7 MHz IF */
	193
	194	write_i2c(5, TSA6060T_ADDR, (f << 1) \| 1, f >> 7, 0x60 \| ((f >> 15) & 1), 0);
	195	}
	196
c5f822bf DL	197	static int vidioc_querycap(struct file file, void priv,
c5f822bf DL	198	struct v4l2_capability *v)
1da177e4	199	{
c5f822bf DL	200	strlcpy(v->driver, "radio-trust", sizeof(v->driver));
	201	strlcpy(v->card, "Trust FM Radio", sizeof(v->card));
	202	sprintf(v->bus_info, "ISA");
	203	v->version = RADIO_VERSION;
	204	v->capabilities = V4L2_CAP_TUNER;
	205	return 0;
	206	}
1da177e4	207
c5f822bf DL	208	static int vidioc_g_tuner(struct file file, void priv,
	209	struct v4l2_tuner *v)
	210	{
	211	if (v->index > 0)
	212	return -EINVAL;
1da177e4	213
c5f822bf DL	214	strcpy(v->name, "FM");
	215	v->type = V4L2_TUNER_RADIO;
	216	v->rangelow = (87.5*16000);
	217	v->rangehigh = (108*16000);
	218	v->rxsubchans = V4L2_TUNER_SUB_MONO\|V4L2_TUNER_SUB_STEREO;
	219	v->capability = V4L2_TUNER_CAP_LOW;
	220	if (tr_getstereo())
	221	v->audmode = V4L2_TUNER_MODE_STEREO;
	222	else
	223	v->audmode = V4L2_TUNER_MODE_MONO;
	224	v->signal = tr_getsigstr();
	225	return 0;
	226	}
982eddb9	227
c5f822bf DL	228	static int vidioc_s_tuner(struct file file, void priv,
	229	struct v4l2_tuner *v)
	230	{
	231	if (v->index > 0)
	232	return -EINVAL;
982eddb9	233
c5f822bf DL	234	return 0;
c5f822bf DL	235	}
982eddb9	236
c5f822bf DL	237	static int vidioc_s_frequency(struct file file, void priv,
	238	struct v4l2_frequency *f)
	239	{
	240	curfreq = f->frequency;
	241	tr_setfreq(curfreq);
	242	return 0;
	243	}
982eddb9	244
c5f822bf DL	245	static int vidioc_g_frequency(struct file file, void priv,
	246	struct v4l2_frequency *f)
	247	{
	248	f->type = V4L2_TUNER_RADIO;
	249	f->frequency = curfreq;
	250	return 0;
	251	}
	252
	253	static int vidioc_queryctrl(struct file file, void priv,
	254	struct v4l2_queryctrl *qc)
	255	{
	256	int i;
982eddb9	257
c5f822bf DL	258	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	259	if (qc->id && qc->id == radio_qctrl[i].id) {
	260	memcpy(qc, &(radio_qctrl[i]),
	261	sizeof(*qc));
1da177e4 LT	262	return 0;
1da177e4 LT	263	}
c5f822bf DL	264	}
	265	return -EINVAL;
	266	}
	267
	268	static int vidioc_g_ctrl(struct file file, void priv,
	269	struct v4l2_control *ctrl)
	270	{
	271	switch (ctrl->id) {
	272	case V4L2_CID_AUDIO_MUTE:
	273	ctrl->value = curmute;
	274	return 0;
	275	case V4L2_CID_AUDIO_VOLUME:
	276	ctrl->value = curvol * 2048;
	277	return 0;
	278	case V4L2_CID_AUDIO_BASS:
	279	ctrl->value = curbass * 4370;
	280	return 0;
	281	case V4L2_CID_AUDIO_TREBLE:
	282	ctrl->value = curtreble * 4370;
	283	return 0;
	284	}
	285	return -EINVAL;
	286	}
982eddb9	287
c5f822bf DL	288	static int vidioc_s_ctrl(struct file file, void priv,
	289	struct v4l2_control *ctrl)
	290	{
	291	switch (ctrl->id) {
	292	case V4L2_CID_AUDIO_MUTE:
	293	tr_setmute(ctrl->value);
	294	return 0;
	295	case V4L2_CID_AUDIO_VOLUME:
	296	tr_setvol(ctrl->value);
	297	return 0;
	298	case V4L2_CID_AUDIO_BASS:
	299	tr_setbass(ctrl->value);
	300	return 0;
	301	case V4L2_CID_AUDIO_TREBLE:
	302	tr_settreble(ctrl->value);
	303	return 0;
1da177e4	304	}
c5f822bf	305	return -EINVAL;
1da177e4 LT	306	}
1da177e4 LT	307
c5f822bf DL	308	static int vidioc_g_audio(struct file file, void priv,
c5f822bf DL	309	struct v4l2_audio *a)
1da177e4	310	{
c5f822bf DL	311	if (a->index > 1)
	312	return -EINVAL;
	313
	314	strcpy(a->name, "Radio");
	315	a->capability = V4L2_AUDCAP_STEREO;
	316	return 0;
	317	}
	318
	319	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	320	{
	321	*i = 0;
	322	return 0;
	323	}
	324
	325	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	326	{
	327	if (i != 0)
	328	return -EINVAL;
	329	return 0;
	330	}
	331
	332	static int vidioc_s_audio(struct file file, void priv,
	333	struct v4l2_audio *a)
	334	{
	335	if (a->index != 0)
	336	return -EINVAL;
	337	return 0;
1da177e4 LT	338	}
1da177e4 LT	339
bec43661	340	static int trust_exclusive_open(struct file *file)
3ca685aa HV	341	{
	342	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
	343	}
	344
bec43661	345	static int trust_exclusive_release(struct file *file)
3ca685aa HV	346	{
	347	clear_bit(0, &in_use);
	348	return 0;
	349	}
	350
bec43661	351	static const struct v4l2_file_operations trust_fops = {
1da177e4	352	.owner = THIS_MODULE,
3ca685aa HV	353	.open = trust_exclusive_open,
3ca685aa HV	354	.release = trust_exclusive_release,
c5f822bf	355	.ioctl = video_ioctl2,
1da177e4 LT	356	};
1da177e4 LT	357
a399810c	358	static const struct v4l2_ioctl_ops trust_ioctl_ops = {
c5f822bf DL	359	.vidioc_querycap = vidioc_querycap,
	360	.vidioc_g_tuner = vidioc_g_tuner,
	361	.vidioc_s_tuner = vidioc_s_tuner,
	362	.vidioc_g_frequency = vidioc_g_frequency,
	363	.vidioc_s_frequency = vidioc_s_frequency,
	364	.vidioc_queryctrl = vidioc_queryctrl,
	365	.vidioc_g_ctrl = vidioc_g_ctrl,
	366	.vidioc_s_ctrl = vidioc_s_ctrl,
	367	.vidioc_g_audio = vidioc_g_audio,
	368	.vidioc_s_audio = vidioc_s_audio,
	369	.vidioc_g_input = vidioc_g_input,
	370	.vidioc_s_input = vidioc_s_input,
1da177e4 LT	371	};
1da177e4 LT	372
a399810c	373	static struct video_device trust_radio = {
a399810c	374	.name = "Trust FM Radio",
a399810c HV	375	.fops = &trust_fops,
a399810c HV	376	.ioctl_ops = &trust_ioctl_ops,
aa5e90af	377	.release = video_device_release_empty,
a399810c HV	378	};
a399810c HV	379
1da177e4 LT	380	static int __init trust_init(void)
	381	{
	382	if(io == -1) {
	383	printk(KERN_ERR "You must set an I/O address with io=0x???\n");
	384	return -EINVAL;
	385	}
	386	if(!request_region(io, 2, "Trust FM Radio")) {
	387	printk(KERN_ERR "trust: port 0x%x already in use\n", io);
	388	return -EBUSY;
	389	}
cba99ae8	390	if (video_register_device(&trust_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
1da177e4 LT	391	release_region(io, 2);
	392	return -EINVAL;
	393	}
	394
	395	printk(KERN_INFO "Trust FM Radio card driver v1.0.\n");
	396
	397	write_i2c(2, TDA7318_ADDR, 0x80); /* speaker att. LF = 0 dB */
	398	write_i2c(2, TDA7318_ADDR, 0xa0); /* speaker att. RF = 0 dB */
	399	write_i2c(2, TDA7318_ADDR, 0xc0); /* speaker att. LR = 0 dB */
	400	write_i2c(2, TDA7318_ADDR, 0xe0); /* speaker att. RR = 0 dB */
	401	write_i2c(2, TDA7318_ADDR, 0x40); /* stereo 1 input, gain = 18.75 dB */
	402
4286c6f6	403	tr_setvol(0x8000);
1da177e4 LT	404	tr_setbass(0x8000);
	405	tr_settreble(0x8000);
	406	tr_setstereo(1);
	407
	408	/* mute card - prevents noisy bootups */
	409	tr_setmute(1);
	410
	411	return 0;
	412	}
	413
	414	MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
	415	MODULE_DESCRIPTION("A driver for the Trust FM Radio card.");
	416	MODULE_LICENSE("GPL");
	417
	418	module_param(io, int, 0);
	419	MODULE_PARM_DESC(io, "I/O address of the Trust FM Radio card (0x350 or 0x358)");
	420	module_param(radio_nr, int, 0);
	421
	422	static void __exit cleanup_trust_module(void)
	423	{
	424	video_unregister_device(&trust_radio);
	425	release_region(io, 2);
	426	}
	427
	428	module_init(trust_init);
	429	module_exit(cleanup_trust_module);