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

/* radio-aztech.c - Aztech radio card driver for Linux 2.2
 *
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 * 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)
 *
 * The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/
 * along with more information on the card itself.
 *
 * History:
 * 1999-02-24	Russell Kroll <rkroll@exploits.org>
 *		Fine tuning/VIDEO_TUNER_LOW
 * 		Range expanded to 87-108 MHz (from 87.9-107.8)
 *
 * Notable changes from the original source:
 * - includes stripped down to the essentials
 * - for loops used as delays replaced with udelay()
 * - #defines removed, changed to static values
 * - tuning structure changed - no more character arrays, other changes
*/

#include <linux/module.h>	/* Modules 			*/
#include <linux/init.h>		/* Initdata			*/
#include <linux/ioport.h>	/* request_region		*/
#include <linux/delay.h>	/* udelay			*/
#include <linux/videodev2.h>	/* kernel radio structs		*/
#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#include <linux/io.h>		/* outb, outb_p			*/
#include <linux/uaccess.h>	/* copy to/from user		*/
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>

MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
MODULE_DESCRIPTION("A driver for the Aztech radio card.");
MODULE_LICENSE("GPL");

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

#ifndef CONFIG_RADIO_AZTECH_PORT
#define CONFIG_RADIO_AZTECH_PORT -1
#endif

static int io = CONFIG_RADIO_AZTECH_PORT;
static int radio_nr = -1;
static int radio_wait_time = 1000;

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

#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)

struct aztech
{
	struct v4l2_device v4l2_dev;
	struct video_device vdev;
	int io;
	int curvol;
	unsigned long curfreq;
	int stereo;
	struct mutex lock;
};

static struct aztech aztech_card;

static int volconvert(int level)
{
	level >>= 14;		/* Map 16bits down to 2 bit */
	level &= 3;

	/* convert to card-friendly values */
	switch (level) {
	case 0:
		return 0;
	case 1:
		return 1;
	case 2:
		return 4;
	case 3:
		return 5;
	}
	return 0;	/* Quieten gcc */
}

static void send_0_byte(struct aztech *az)
{
	udelay(radio_wait_time);
	outb_p(2 + volconvert(az->curvol), az->io);
	outb_p(64 + 2 + volconvert(az->curvol), az->io);
}

static void send_1_byte(struct aztech *az)
{
	udelay (radio_wait_time);
	outb_p(128 + 2 + volconvert(az->curvol), az->io);
	outb_p(128 + 64 + 2 + volconvert(az->curvol), az->io);
}

static int az_setvol(struct aztech *az, int vol)
{
	mutex_lock(&az->lock);
	outb(volconvert(vol), az->io);
	mutex_unlock(&az->lock);
	return 0;
}

/* thanks to Michael Dwyer for giving me a dose of clues in
 * the signal strength department..
 *
 * This card has a stereo bit - bit 0 set = mono, not set = stereo
 * It also has a "signal" bit - bit 1 set = bad signal, not set = good
 *
 */

static int az_getsigstr(struct aztech *az)
{
	int sig = 1;

	mutex_lock(&az->lock);
	if (inb(az->io) & 2)	/* bit set = no signal present */
		sig = 0;
	mutex_unlock(&az->lock);
	return sig;
}

static int az_getstereo(struct aztech *az)
{
	int stereo = 1;

	mutex_lock(&az->lock);
	if (inb(az->io) & 1) 	/* bit set = mono */
		stereo = 0;
	mutex_unlock(&az->lock);
	return stereo;
}

static int az_setfreq(struct aztech *az, unsigned long frequency)
{
	int  i;

	mutex_lock(&az->lock);

	az->curfreq = frequency;
	frequency += 171200;		/* Add 10.7 MHz IF		*/
	frequency /= 800;		/* Convert to 50 kHz units	*/

	send_0_byte(az);		/*  0: LSB of frequency       */

	for (i = 0; i < 13; i++)	/*   : frequency bits (1-13)  */
		if (frequency & (1 << i))
			send_1_byte(az);
		else
			send_0_byte(az);

	send_0_byte(az);		/* 14: test bit - always 0    */
	send_0_byte(az);		/* 15: test bit - always 0    */
	send_0_byte(az);		/* 16: band data 0 - always 0 */
	if (az->stereo)		/* 17: stereo (1 to enable)   */
		send_1_byte(az);
	else
		send_0_byte(az);

	send_1_byte(az);		/* 18: band data 1 - unknown  */
	send_0_byte(az);		/* 19: time base - always 0   */
	send_0_byte(az);		/* 20: spacing (0 = 25 kHz)   */
	send_1_byte(az);		/* 21: spacing (1 = 25 kHz)   */
	send_0_byte(az);		/* 22: spacing (0 = 25 kHz)   */
	send_1_byte(az);		/* 23: AM/FM (FM = 1, always) */

	/* latch frequency */

	udelay(radio_wait_time);
	outb_p(128 + 64 + volconvert(az->curvol), az->io);

	mutex_unlock(&az->lock);

	return 0;
}

static int vidioc_querycap(struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-aztech", sizeof(v->driver));
	strlcpy(v->card, "Aztech Radio", sizeof(v->card));
	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
	v->version = RADIO_VERSION;
	v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
	return 0;
}

static int vidioc_g_tuner(struct file *file, void *priv,
				struct v4l2_tuner *v)
{
	struct aztech *az = video_drvdata(file);

	if (v->index > 0)
		return -EINVAL;

	strlcpy(v->name, "FM", sizeof(v->name));
	v->type = V4L2_TUNER_RADIO;

	v->rangelow = 87 * 16000;
	v->rangehigh = 108 * 16000;
	v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
	v->capability = V4L2_TUNER_CAP_LOW;
	if (az_getstereo(az))
		v->audmode = V4L2_TUNER_MODE_STEREO;
	else
		v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal = 0xFFFF * az_getsigstr(az);

	return 0;
}

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

static int vidioc_g_audio(struct file *file, void *priv,
			   struct v4l2_audio *a)
{
	a->index = 0;
	strlcpy(a->name, "Radio", sizeof(a->name));
	a->capability = V4L2_AUDCAP_STEREO;
	return 0;
}

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

static int vidioc_s_frequency(struct file *file, void *priv,
				struct v4l2_frequency *f)
{
	struct aztech *az = video_drvdata(file);

	az_setfreq(az, f->frequency);
	return 0;
}

static int vidioc_g_frequency(struct file *file, void *priv,
				struct v4l2_frequency *f)
{
	struct aztech *az = video_drvdata(file);

	f->type = V4L2_TUNER_RADIO;
	f->frequency = az->curfreq;
	return 0;
}

static int vidioc_queryctrl(struct file *file, void *priv,
			    struct v4l2_queryctrl *qc)
{
	switch (qc->id) {
	case V4L2_CID_AUDIO_MUTE:
		return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
	case V4L2_CID_AUDIO_VOLUME:
		return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff);
	}
	return -EINVAL;
}

static int vidioc_g_ctrl(struct file *file, void *priv,
			    struct v4l2_control *ctrl)
{
	struct aztech *az = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (az->curvol == 0)
			ctrl->value = 1;
		else
			ctrl->value = 0;
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		ctrl->value = az->curvol * 6554;
		return 0;
	}
	return -EINVAL;
}

static int vidioc_s_ctrl(struct file *file, void *priv,
			    struct v4l2_control *ctrl)
{
	struct aztech *az = video_drvdata(file);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (ctrl->value)
			az_setvol(az, 0);
		else
			az_setvol(az, az->curvol);
		return 0;
	case V4L2_CID_AUDIO_VOLUME:
		az_setvol(az, ctrl->value);
		return 0;
	}
	return -EINVAL;
}

static int aztech_open(struct file *file)
{
	return 0;
}

static int aztech_release(struct file *file)
{
	return 0;
}

static const struct v4l2_file_operations aztech_fops = {
	.owner		= THIS_MODULE,
	.open           = aztech_open,
	.release        = aztech_release,
	.ioctl		= video_ioctl2,
};

static const struct v4l2_ioctl_ops aztech_ioctl_ops = {
	.vidioc_querycap    = vidioc_querycap,
	.vidioc_g_tuner     = vidioc_g_tuner,
	.vidioc_s_tuner     = vidioc_s_tuner,
	.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_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,
};

static int __init aztech_init(void)
{
	struct aztech *az = &aztech_card;
	struct v4l2_device *v4l2_dev = &az->v4l2_dev;
	int res;

	strlcpy(v4l2_dev->name, "aztech", sizeof(v4l2_dev->name));
	az->io = io;

	if (az->io == -1) {
		v4l2_err(v4l2_dev, "you must set an I/O address with io=0x350 or 0x358\n");
		return -EINVAL;
	}

	if (!request_region(az->io, 2, "aztech")) {
		v4l2_err(v4l2_dev, "port 0x%x already in use\n", az->io);
		return -EBUSY;
	}

	res = v4l2_device_register(NULL, v4l2_dev);
	if (res < 0) {
		release_region(az->io, 2);
		v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
		return res;
	}

	mutex_init(&az->lock);
	strlcpy(az->vdev.name, v4l2_dev->name, sizeof(az->vdev.name));
	az->vdev.v4l2_dev = v4l2_dev;
	az->vdev.fops = &aztech_fops;
	az->vdev.ioctl_ops = &aztech_ioctl_ops;
	az->vdev.release = video_device_release_empty;
	video_set_drvdata(&az->vdev, az);

	if (video_register_device(&az->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
		v4l2_device_unregister(v4l2_dev);
		release_region(az->io, 2);
		return -EINVAL;
	}

	v4l2_info(v4l2_dev, "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
	/* mute card - prevents noisy bootups */
	outb(0, az->io);
	return 0;
}

static void __exit aztech_exit(void)
{
	struct aztech *az = &aztech_card;

	video_unregister_device(&az->vdev);
	v4l2_device_unregister(&az->v4l2_dev);
	release_region(az->io, 2);
}

module_init(aztech_init);
module_exit(aztech_exit);
Commit	Line	Data
4286c6f6	1	/* radio-aztech.c - Aztech radio card driver for Linux 2.2
1da177e4	2	*
a4366af4	3	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
4286c6f6	4	* Adapted to support the Video for Linux API by
1da177e4 LT	5	* Russell Kroll <rkroll@exploits.org>. Based on original tuner code by:
	6	*
	7	* Quay Ly
	8	* Donald Song
4286c6f6	9	* Jason Lewis (jlewis@twilight.vtc.vsc.edu)
1da177e4 LT	10	* Scott McGrath (smcgrath@twilight.vtc.vsc.edu)
	11	* William McGrath (wmcgrath@twilight.vtc.vsc.edu)
	12	*
	13	* The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/
	14	* along with more information on the card itself.
	15	*
	16	* History:
	17	* 1999-02-24 Russell Kroll <rkroll@exploits.org>
	18	* Fine tuning/VIDEO_TUNER_LOW
	19	* Range expanded to 87-108 MHz (from 87.9-107.8)
	20	*
	21	* Notable changes from the original source:
	22	* - includes stripped down to the essentials
	23	* - for loops used as delays replaced with udelay()
	24	* - #defines removed, changed to static values
	25	* - tuning structure changed - no more character arrays, other changes
	26	*/
	27
	28	#include <linux/module.h> /* Modules */
	29	#include <linux/init.h> /* Initdata */
fb911ee8	30	#include <linux/ioport.h> /* request_region */
1da177e4	31	#include <linux/delay.h> /* udelay */
a4366af4	32	#include <linux/videodev2.h> /* kernel radio structs */
e697e12e HV	33	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	34	#include <linux/io.h> /* outb, outb_p */
	35	#include <linux/uaccess.h> /* copy to/from user */
	36	#include <media/v4l2-device.h>
35ea11ff	37	#include <media/v4l2-ioctl.h>
1da177e4	38
e697e12e HV	39	MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
	40	MODULE_DESCRIPTION("A driver for the Aztech radio card.");
	41	MODULE_LICENSE("GPL");
a4366af4	42
1da177e4 LT	43	/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
	44
	45	#ifndef CONFIG_RADIO_AZTECH_PORT
	46	#define CONFIG_RADIO_AZTECH_PORT -1
	47	#endif
	48
4286c6f6	49	static int io = CONFIG_RADIO_AZTECH_PORT;
1da177e4 LT	50	static int radio_nr = -1;
1da177e4 LT	51	static int radio_wait_time = 1000;
1da177e4	52
e697e12e HV	53	module_param(io, int, 0);
	54	module_param(radio_nr, int, 0);
	55	MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");
	56
	57	#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
	58
	59	struct aztech
1da177e4	60	{
e697e12e HV	61	struct v4l2_device v4l2_dev;
	62	struct video_device vdev;
	63	int io;
1da177e4 LT	64	int curvol;
	65	unsigned long curfreq;
	66	int stereo;
e697e12e	67	struct mutex lock;
1da177e4 LT	68	};
1da177e4 LT	69
e697e12e HV	70	static struct aztech aztech_card;
e697e12e HV	71
1da177e4 LT	72	static int volconvert(int level)
1da177e4 LT	73	{
e697e12e HV	74	level >>= 14; /* Map 16bits down to 2 bit */
e697e12e HV	75	level &= 3;
4286c6f6	76
1da177e4	77	/* convert to card-friendly values */
e697e12e HV	78	switch (level) {
	79	case 0:
	80	return 0;
	81	case 1:
	82	return 1;
	83	case 2:
	84	return 4;
	85	case 3:
	86	return 5;
1da177e4 LT	87	}
	88	return 0; /* Quieten gcc */
	89	}
	90
e697e12e	91	static void send_0_byte(struct aztech *az)
1da177e4 LT	92	{
1da177e4 LT	93	udelay(radio_wait_time);
e697e12e HV	94	outb_p(2 + volconvert(az->curvol), az->io);
e697e12e HV	95	outb_p(64 + 2 + volconvert(az->curvol), az->io);
1da177e4 LT	96	}
1da177e4 LT	97
e697e12e	98	static void send_1_byte(struct aztech *az)
1da177e4 LT	99	{
1da177e4 LT	100	udelay (radio_wait_time);
e697e12e HV	101	outb_p(128 + 2 + volconvert(az->curvol), az->io);
e697e12e HV	102	outb_p(128 + 64 + 2 + volconvert(az->curvol), az->io);
1da177e4 LT	103	}
1da177e4 LT	104
e697e12e	105	static int az_setvol(struct aztech *az, int vol)
1da177e4	106	{
e697e12e HV	107	mutex_lock(&az->lock);
	108	outb(volconvert(vol), az->io);
	109	mutex_unlock(&az->lock);
1da177e4 LT	110	return 0;
	111	}
	112
	113	/* thanks to Michael Dwyer for giving me a dose of clues in
	114	* the signal strength department..
	115	*
	116	* This card has a stereo bit - bit 0 set = mono, not set = stereo
	117	* It also has a "signal" bit - bit 1 set = bad signal, not set = good
	118	*
	119	*/
	120
e697e12e	121	static int az_getsigstr(struct aztech *az)
1da177e4	122	{
e697e12e HV	123	int sig = 1;
	124
	125	mutex_lock(&az->lock);
	126	if (inb(az->io) & 2) /* bit set = no signal present */
	127	sig = 0;
	128	mutex_unlock(&az->lock);
	129	return sig;
1da177e4 LT	130	}
1da177e4 LT	131
e697e12e	132	static int az_getstereo(struct aztech *az)
1da177e4	133	{
e697e12e HV	134	int stereo = 1;
	135
	136	mutex_lock(&az->lock);
	137	if (inb(az->io) & 1) /* bit set = mono */
	138	stereo = 0;
	139	mutex_unlock(&az->lock);
	140	return stereo;
1da177e4 LT	141	}
1da177e4 LT	142
e697e12e	143	static int az_setfreq(struct aztech *az, unsigned long frequency)
1da177e4 LT	144	{
	145	int i;
	146
e697e12e HV	147	mutex_lock(&az->lock);
	148
	149	az->curfreq = frequency;
1da177e4 LT	150	frequency += 171200; /* Add 10.7 MHz IF */
1da177e4 LT	151	frequency /= 800; /* Convert to 50 kHz units */
4286c6f6	152
e697e12e	153	send_0_byte(az); /* 0: LSB of frequency */
1da177e4 LT	154
	155	for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
	156	if (frequency & (1 << i))
e697e12e	157	send_1_byte(az);
1da177e4	158	else
e697e12e	159	send_0_byte(az);
1da177e4	160
e697e12e HV	161	send_0_byte(az); /* 14: test bit - always 0 */
	162	send_0_byte(az); /* 15: test bit - always 0 */
	163	send_0_byte(az); /* 16: band data 0 - always 0 */
	164	if (az->stereo) /* 17: stereo (1 to enable) */
	165	send_1_byte(az);
1da177e4	166	else
e697e12e	167	send_0_byte(az);
1da177e4	168
e697e12e HV	169	send_1_byte(az); /* 18: band data 1 - unknown */
	170	send_0_byte(az); /* 19: time base - always 0 */
	171	send_0_byte(az); /* 20: spacing (0 = 25 kHz) */
	172	send_1_byte(az); /* 21: spacing (1 = 25 kHz) */
	173	send_0_byte(az); /* 22: spacing (0 = 25 kHz) */
	174	send_1_byte(az); /* 23: AM/FM (FM = 1, always) */
1da177e4 LT	175
	176	/* latch frequency */
	177
e697e12e HV	178	udelay(radio_wait_time);
e697e12e HV	179	outb_p(128 + 64 + volconvert(az->curvol), az->io);
4286c6f6	180
e697e12e	181	mutex_unlock(&az->lock);
1da177e4 LT	182
	183	return 0;
	184	}
	185
e697e12e	186	static int vidioc_querycap(struct file file, void priv,
99218fe4 MCC	187	struct v4l2_capability *v)
99218fe4 MCC	188	{
e697e12e HV	189	strlcpy(v->driver, "radio-aztech", sizeof(v->driver));
	190	strlcpy(v->card, "Aztech Radio", sizeof(v->card));
	191	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
99218fe4	192	v->version = RADIO_VERSION;
e697e12e	193	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
99218fe4 MCC	194	return 0;
	195	}
	196
e697e12e	197	static int vidioc_g_tuner(struct file file, void priv,
99218fe4	198	struct v4l2_tuner *v)
1da177e4	199	{
e697e12e	200	struct aztech *az = video_drvdata(file);
4286c6f6	201
99218fe4 MCC	202	if (v->index > 0)
99218fe4 MCC	203	return -EINVAL;
a4366af4	204
e697e12e	205	strlcpy(v->name, "FM", sizeof(v->name));
99218fe4	206	v->type = V4L2_TUNER_RADIO;
a4366af4	207
e697e12e HV	208	v->rangelow = 87 * 16000;
	209	v->rangehigh = 108 * 16000;
	210	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
	211	v->capability = V4L2_TUNER_CAP_LOW;
	212	if (az_getstereo(az))
99218fe4 MCC	213	v->audmode = V4L2_TUNER_MODE_STEREO;
	214	else
	215	v->audmode = V4L2_TUNER_MODE_MONO;
e697e12e	216	v->signal = 0xFFFF * az_getsigstr(az);
a4366af4	217
99218fe4 MCC	218	return 0;
99218fe4 MCC	219	}
a4366af4	220
e697e12e	221	static int vidioc_s_tuner(struct file file, void priv,
99218fe4 MCC	222	struct v4l2_tuner *v)
99218fe4 MCC	223	{
e697e12e	224	return v->index ? -EINVAL : 0;
676b0ac7 MCC	225	}
676b0ac7 MCC	226
a0c05ab9 MCC	227	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	228	{
	229	*i = 0;
	230	return 0;
	231	}
	232
	233	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	234	{
e697e12e	235	return i ? -EINVAL : 0;
a0c05ab9 MCC	236	}
a0c05ab9 MCC	237
e697e12e	238	static int vidioc_g_audio(struct file file, void priv,
676b0ac7 MCC	239	struct v4l2_audio *a)
676b0ac7 MCC	240	{
e697e12e HV	241	a->index = 0;
	242	strlcpy(a->name, "Radio", sizeof(a->name));
	243	a->capability = V4L2_AUDCAP_STEREO;
676b0ac7 MCC	244	return 0;
	245	}
	246
e697e12e HV	247	static int vidioc_s_audio(struct file file, void priv,
	248	struct v4l2_audio *a)
	249	{
	250	return a->index ? -EINVAL : 0;
	251	}
	252
	253	static int vidioc_s_frequency(struct file file, void priv,
99218fe4 MCC	254	struct v4l2_frequency *f)
99218fe4 MCC	255	{
e697e12e	256	struct aztech *az = video_drvdata(file);
a4366af4	257
e697e12e	258	az_setfreq(az, f->frequency);
99218fe4 MCC	259	return 0;
	260	}
	261
e697e12e	262	static int vidioc_g_frequency(struct file file, void priv,
99218fe4 MCC	263	struct v4l2_frequency *f)
99218fe4 MCC	264	{
e697e12e	265	struct aztech *az = video_drvdata(file);
99218fe4 MCC	266
	267	f->type = V4L2_TUNER_RADIO;
	268	f->frequency = az->curfreq;
99218fe4 MCC	269	return 0;
	270	}
	271
e697e12e	272	static int vidioc_queryctrl(struct file file, void priv,
99218fe4 MCC	273	struct v4l2_queryctrl *qc)
99218fe4 MCC	274	{
e697e12e HV	275	switch (qc->id) {
	276	case V4L2_CID_AUDIO_MUTE:
	277	return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
	278	case V4L2_CID_AUDIO_VOLUME:
	279	return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff);
99218fe4 MCC	280	}
	281	return -EINVAL;
	282	}
a4366af4	283
e697e12e	284	static int vidioc_g_ctrl(struct file file, void priv,
99218fe4 MCC	285	struct v4l2_control *ctrl)
99218fe4 MCC	286	{
e697e12e	287	struct aztech *az = video_drvdata(file);
99218fe4 MCC	288
99218fe4 MCC	289	switch (ctrl->id) {
e697e12e HV	290	case V4L2_CID_AUDIO_MUTE:
	291	if (az->curvol == 0)
	292	ctrl->value = 1;
	293	else
	294	ctrl->value = 0;
	295	return 0;
	296	case V4L2_CID_AUDIO_VOLUME:
	297	ctrl->value = az->curvol * 6554;
	298	return 0;
1da177e4	299	}
99218fe4	300	return -EINVAL;
1da177e4 LT	301	}
1da177e4 LT	302
e697e12e	303	static int vidioc_s_ctrl(struct file file, void priv,
99218fe4	304	struct v4l2_control *ctrl)
1da177e4	305	{
e697e12e	306	struct aztech *az = video_drvdata(file);
99218fe4 MCC	307
99218fe4 MCC	308	switch (ctrl->id) {
e697e12e HV	309	case V4L2_CID_AUDIO_MUTE:
	310	if (ctrl->value)
	311	az_setvol(az, 0);
	312	else
	313	az_setvol(az, az->curvol);
	314	return 0;
	315	case V4L2_CID_AUDIO_VOLUME:
	316	az_setvol(az, ctrl->value);
	317	return 0;
99218fe4 MCC	318	}
99218fe4 MCC	319	return -EINVAL;
1da177e4 LT	320	}
1da177e4 LT	321
e697e12e	322	static int aztech_open(struct file *file)
3ca685aa	323	{
e697e12e	324	return 0;
3ca685aa HV	325	}
3ca685aa HV	326
e697e12e	327	static int aztech_release(struct file *file)
3ca685aa	328	{
3ca685aa HV	329	return 0;
	330	}
	331
bec43661	332	static const struct v4l2_file_operations aztech_fops = {
1da177e4	333	.owner = THIS_MODULE,
e697e12e HV	334	.open = aztech_open,
e697e12e HV	335	.release = aztech_release,
99218fe4	336	.ioctl = video_ioctl2,
1da177e4 LT	337	};
1da177e4 LT	338
a399810c	339	static const struct v4l2_ioctl_ops aztech_ioctl_ops = {
99218fe4 MCC	340	.vidioc_querycap = vidioc_querycap,
	341	.vidioc_g_tuner = vidioc_g_tuner,
	342	.vidioc_s_tuner = vidioc_s_tuner,
676b0ac7 MCC	343	.vidioc_g_audio = vidioc_g_audio,
676b0ac7 MCC	344	.vidioc_s_audio = vidioc_s_audio,
a0c05ab9 MCC	345	.vidioc_g_input = vidioc_g_input,
a0c05ab9 MCC	346	.vidioc_s_input = vidioc_s_input,
99218fe4 MCC	347	.vidioc_g_frequency = vidioc_g_frequency,
	348	.vidioc_s_frequency = vidioc_s_frequency,
	349	.vidioc_queryctrl = vidioc_queryctrl,
	350	.vidioc_g_ctrl = vidioc_g_ctrl,
	351	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	352	};
	353
	354	static int __init aztech_init(void)
	355	{
e697e12e HV	356	struct aztech *az = &aztech_card;
	357	struct v4l2_device *v4l2_dev = &az->v4l2_dev;
	358	int res;
	359
	360	strlcpy(v4l2_dev->name, "aztech", sizeof(v4l2_dev->name));
	361	az->io = io;
	362
	363	if (az->io == -1) {
b24c20cc	364	v4l2_err(v4l2_dev, "you must set an I/O address with io=0x350 or 0x358\n");
1da177e4 LT	365	return -EINVAL;
	366	}
	367
e697e12e HV	368	if (!request_region(az->io, 2, "aztech")) {
e697e12e HV	369	v4l2_err(v4l2_dev, "port 0x%x already in use\n", az->io);
1da177e4 LT	370	return -EBUSY;
	371	}
	372
e697e12e HV	373	res = v4l2_device_register(NULL, v4l2_dev);
	374	if (res < 0) {
	375	release_region(az->io, 2);
	376	v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
	377	return res;
	378	}
4286c6f6	379
e697e12e HV	380	mutex_init(&az->lock);
	381	strlcpy(az->vdev.name, v4l2_dev->name, sizeof(az->vdev.name));
	382	az->vdev.v4l2_dev = v4l2_dev;
	383	az->vdev.fops = &aztech_fops;
	384	az->vdev.ioctl_ops = &aztech_ioctl_ops;
	385	az->vdev.release = video_device_release_empty;
	386	video_set_drvdata(&az->vdev, az);
	387
	388	if (video_register_device(&az->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
	389	v4l2_device_unregister(v4l2_dev);
	390	release_region(az->io, 2);
1da177e4 LT	391	return -EINVAL;
1da177e4 LT	392	}
4286c6f6	393
e697e12e	394	v4l2_info(v4l2_dev, "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
1da177e4	395	/* mute card - prevents noisy bootups */
e697e12e	396	outb(0, az->io);
1da177e4 LT	397	return 0;
	398	}
	399
e697e12e	400	static void __exit aztech_exit(void)
1da177e4	401	{
e697e12e HV	402	struct aztech *az = &aztech_card;
	403
	404	video_unregister_device(&az->vdev);
	405	v4l2_device_unregister(&az->v4l2_dev);
	406	release_region(az->io, 2);
1da177e4 LT	407	}
	408
	409	module_init(aztech_init);
e697e12e	410	module_exit(aztech_exit);