[GitHub/mt8127/android_kernel_alcatel_ttab.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 <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);

	if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
		return -EINVAL;
	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);

	if (f->tuner != 0)
		return -EINVAL;
	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 const struct v4l2_file_operations aztech_fops = {
	.owner		= THIS_MODULE,
	.unlocked_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);
	/* mute card - prevents noisy bootups */
	outb(0, az->io);

	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");
	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 */
e697e12e HV	34	#include <linux/io.h> /* outb, outb_p */
e697e12e	35	#include <media/v4l2-device.h>
35ea11ff	36	#include <media/v4l2-ioctl.h>
1da177e4	37
e697e12e HV	38	MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
	39	MODULE_DESCRIPTION("A driver for the Aztech radio card.");
	40	MODULE_LICENSE("GPL");
a4366af4	41
1da177e4 LT	42	/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
	43
	44	#ifndef CONFIG_RADIO_AZTECH_PORT
	45	#define CONFIG_RADIO_AZTECH_PORT -1
	46	#endif
	47
4286c6f6	48	static int io = CONFIG_RADIO_AZTECH_PORT;
1da177e4 LT	49	static int radio_nr = -1;
1da177e4 LT	50	static int radio_wait_time = 1000;
1da177e4	51
e697e12e HV	52	module_param(io, int, 0);
	53	module_param(radio_nr, int, 0);
	54	MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");
	55
	56	#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
	57
	58	struct aztech
1da177e4	59	{
e697e12e HV	60	struct v4l2_device v4l2_dev;
	61	struct video_device vdev;
	62	int io;
1da177e4 LT	63	int curvol;
	64	unsigned long curfreq;
	65	int stereo;
e697e12e	66	struct mutex lock;
1da177e4 LT	67	};
1da177e4 LT	68
e697e12e HV	69	static struct aztech aztech_card;
e697e12e HV	70
1da177e4 LT	71	static int volconvert(int level)
1da177e4 LT	72	{
e697e12e HV	73	level >>= 14; /* Map 16bits down to 2 bit */
e697e12e HV	74	level &= 3;
4286c6f6	75
1da177e4	76	/* convert to card-friendly values */
e697e12e HV	77	switch (level) {
	78	case 0:
	79	return 0;
	80	case 1:
	81	return 1;
	82	case 2:
	83	return 4;
	84	case 3:
	85	return 5;
1da177e4 LT	86	}
	87	return 0; /* Quieten gcc */
	88	}
	89
e697e12e	90	static void send_0_byte(struct aztech *az)
1da177e4 LT	91	{
1da177e4 LT	92	udelay(radio_wait_time);
e697e12e HV	93	outb_p(2 + volconvert(az->curvol), az->io);
e697e12e HV	94	outb_p(64 + 2 + volconvert(az->curvol), az->io);
1da177e4 LT	95	}
1da177e4 LT	96
e697e12e	97	static void send_1_byte(struct aztech *az)
1da177e4 LT	98	{
1da177e4 LT	99	udelay (radio_wait_time);
e697e12e HV	100	outb_p(128 + 2 + volconvert(az->curvol), az->io);
e697e12e HV	101	outb_p(128 + 64 + 2 + volconvert(az->curvol), az->io);
1da177e4 LT	102	}
1da177e4 LT	103
e697e12e	104	static int az_setvol(struct aztech *az, int vol)
1da177e4	105	{
e697e12e HV	106	mutex_lock(&az->lock);
	107	outb(volconvert(vol), az->io);
	108	mutex_unlock(&az->lock);
1da177e4 LT	109	return 0;
	110	}
	111
	112	/* thanks to Michael Dwyer for giving me a dose of clues in
	113	* the signal strength department..
	114	*
	115	* This card has a stereo bit - bit 0 set = mono, not set = stereo
	116	* It also has a "signal" bit - bit 1 set = bad signal, not set = good
	117	*
	118	*/
	119
e697e12e	120	static int az_getsigstr(struct aztech *az)
1da177e4	121	{
e697e12e HV	122	int sig = 1;
	123
	124	mutex_lock(&az->lock);
	125	if (inb(az->io) & 2) /* bit set = no signal present */
	126	sig = 0;
	127	mutex_unlock(&az->lock);
	128	return sig;
1da177e4 LT	129	}
1da177e4 LT	130
e697e12e	131	static int az_getstereo(struct aztech *az)
1da177e4	132	{
e697e12e HV	133	int stereo = 1;
	134
	135	mutex_lock(&az->lock);
	136	if (inb(az->io) & 1) /* bit set = mono */
	137	stereo = 0;
	138	mutex_unlock(&az->lock);
	139	return stereo;
1da177e4 LT	140	}
1da177e4 LT	141
e697e12e	142	static int az_setfreq(struct aztech *az, unsigned long frequency)
1da177e4 LT	143	{
	144	int i;
	145
e697e12e HV	146	mutex_lock(&az->lock);
	147
	148	az->curfreq = frequency;
1da177e4 LT	149	frequency += 171200; /* Add 10.7 MHz IF */
1da177e4 LT	150	frequency /= 800; /* Convert to 50 kHz units */
4286c6f6	151
e697e12e	152	send_0_byte(az); /* 0: LSB of frequency */
1da177e4 LT	153
	154	for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
	155	if (frequency & (1 << i))
e697e12e	156	send_1_byte(az);
1da177e4	157	else
e697e12e	158	send_0_byte(az);
1da177e4	159
e697e12e HV	160	send_0_byte(az); /* 14: test bit - always 0 */
	161	send_0_byte(az); /* 15: test bit - always 0 */
	162	send_0_byte(az); /* 16: band data 0 - always 0 */
	163	if (az->stereo) /* 17: stereo (1 to enable) */
	164	send_1_byte(az);
1da177e4	165	else
e697e12e	166	send_0_byte(az);
1da177e4	167
e697e12e HV	168	send_1_byte(az); /* 18: band data 1 - unknown */
	169	send_0_byte(az); /* 19: time base - always 0 */
	170	send_0_byte(az); /* 20: spacing (0 = 25 kHz) */
	171	send_1_byte(az); /* 21: spacing (1 = 25 kHz) */
	172	send_0_byte(az); /* 22: spacing (0 = 25 kHz) */
	173	send_1_byte(az); /* 23: AM/FM (FM = 1, always) */
1da177e4 LT	174
	175	/* latch frequency */
	176
e697e12e HV	177	udelay(radio_wait_time);
e697e12e HV	178	outb_p(128 + 64 + volconvert(az->curvol), az->io);
4286c6f6	179
e697e12e	180	mutex_unlock(&az->lock);
1da177e4 LT	181
	182	return 0;
	183	}
	184
e697e12e	185	static int vidioc_querycap(struct file file, void priv,
99218fe4 MCC	186	struct v4l2_capability *v)
99218fe4 MCC	187	{
e697e12e HV	188	strlcpy(v->driver, "radio-aztech", sizeof(v->driver));
	189	strlcpy(v->card, "Aztech Radio", sizeof(v->card));
	190	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
99218fe4	191	v->version = RADIO_VERSION;
e697e12e	192	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
99218fe4 MCC	193	return 0;
	194	}
	195
e697e12e	196	static int vidioc_g_tuner(struct file file, void priv,
99218fe4	197	struct v4l2_tuner *v)
1da177e4	198	{
e697e12e	199	struct aztech *az = video_drvdata(file);
4286c6f6	200
99218fe4 MCC	201	if (v->index > 0)
99218fe4 MCC	202	return -EINVAL;
a4366af4	203
e697e12e	204	strlcpy(v->name, "FM", sizeof(v->name));
99218fe4	205	v->type = V4L2_TUNER_RADIO;
a4366af4	206
e697e12e HV	207	v->rangelow = 87 * 16000;
	208	v->rangehigh = 108 * 16000;
	209	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
	210	v->capability = V4L2_TUNER_CAP_LOW;
	211	if (az_getstereo(az))
99218fe4 MCC	212	v->audmode = V4L2_TUNER_MODE_STEREO;
	213	else
	214	v->audmode = V4L2_TUNER_MODE_MONO;
e697e12e	215	v->signal = 0xFFFF * az_getsigstr(az);
a4366af4	216
99218fe4 MCC	217	return 0;
99218fe4 MCC	218	}
a4366af4	219
e697e12e	220	static int vidioc_s_tuner(struct file file, void priv,
99218fe4 MCC	221	struct v4l2_tuner *v)
99218fe4 MCC	222	{
e697e12e	223	return v->index ? -EINVAL : 0;
676b0ac7 MCC	224	}
676b0ac7 MCC	225
a0c05ab9 MCC	226	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	227	{
	228	*i = 0;
	229	return 0;
	230	}
	231
	232	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	233	{
e697e12e	234	return i ? -EINVAL : 0;
a0c05ab9 MCC	235	}
a0c05ab9 MCC	236
e697e12e	237	static int vidioc_g_audio(struct file file, void priv,
676b0ac7 MCC	238	struct v4l2_audio *a)
676b0ac7 MCC	239	{
e697e12e HV	240	a->index = 0;
	241	strlcpy(a->name, "Radio", sizeof(a->name));
	242	a->capability = V4L2_AUDCAP_STEREO;
676b0ac7 MCC	243	return 0;
	244	}
	245
e697e12e HV	246	static int vidioc_s_audio(struct file file, void priv,
	247	struct v4l2_audio *a)
	248	{
	249	return a->index ? -EINVAL : 0;
	250	}
	251
	252	static int vidioc_s_frequency(struct file file, void priv,
99218fe4 MCC	253	struct v4l2_frequency *f)
99218fe4 MCC	254	{
e697e12e	255	struct aztech *az = video_drvdata(file);
a4366af4	256
a3a9e287 HV	257	if (f->tuner != 0 \|\| f->type != V4L2_TUNER_RADIO)
a3a9e287 HV	258	return -EINVAL;
e697e12e	259	az_setfreq(az, f->frequency);
99218fe4 MCC	260	return 0;
	261	}
	262
e697e12e	263	static int vidioc_g_frequency(struct file file, void priv,
99218fe4 MCC	264	struct v4l2_frequency *f)
99218fe4 MCC	265	{
e697e12e	266	struct aztech *az = video_drvdata(file);
99218fe4	267
a3a9e287 HV	268	if (f->tuner != 0)
a3a9e287 HV	269	return -EINVAL;
99218fe4 MCC	270	f->type = V4L2_TUNER_RADIO;
99218fe4 MCC	271	f->frequency = az->curfreq;
99218fe4 MCC	272	return 0;
	273	}
	274
e697e12e	275	static int vidioc_queryctrl(struct file file, void priv,
99218fe4 MCC	276	struct v4l2_queryctrl *qc)
99218fe4 MCC	277	{
e697e12e HV	278	switch (qc->id) {
	279	case V4L2_CID_AUDIO_MUTE:
	280	return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
	281	case V4L2_CID_AUDIO_VOLUME:
	282	return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff);
99218fe4 MCC	283	}
	284	return -EINVAL;
	285	}
a4366af4	286
e697e12e	287	static int vidioc_g_ctrl(struct file file, void priv,
99218fe4 MCC	288	struct v4l2_control *ctrl)
99218fe4 MCC	289	{
e697e12e	290	struct aztech *az = video_drvdata(file);
99218fe4 MCC	291
99218fe4 MCC	292	switch (ctrl->id) {
e697e12e HV	293	case V4L2_CID_AUDIO_MUTE:
	294	if (az->curvol == 0)
	295	ctrl->value = 1;
	296	else
	297	ctrl->value = 0;
	298	return 0;
	299	case V4L2_CID_AUDIO_VOLUME:
	300	ctrl->value = az->curvol * 6554;
	301	return 0;
1da177e4	302	}
99218fe4	303	return -EINVAL;
1da177e4 LT	304	}
1da177e4 LT	305
e697e12e	306	static int vidioc_s_ctrl(struct file file, void priv,
99218fe4	307	struct v4l2_control *ctrl)
1da177e4	308	{
e697e12e	309	struct aztech *az = video_drvdata(file);
99218fe4 MCC	310
99218fe4 MCC	311	switch (ctrl->id) {
e697e12e HV	312	case V4L2_CID_AUDIO_MUTE:
	313	if (ctrl->value)
	314	az_setvol(az, 0);
	315	else
	316	az_setvol(az, az->curvol);
	317	return 0;
	318	case V4L2_CID_AUDIO_VOLUME:
	319	az_setvol(az, ctrl->value);
	320	return 0;
99218fe4 MCC	321	}
99218fe4 MCC	322	return -EINVAL;
1da177e4 LT	323	}
1da177e4 LT	324
bec43661	325	static const struct v4l2_file_operations aztech_fops = {
1da177e4	326	.owner = THIS_MODULE,
32958fdd	327	.unlocked_ioctl = video_ioctl2,
1da177e4 LT	328	};
1da177e4 LT	329
a399810c	330	static const struct v4l2_ioctl_ops aztech_ioctl_ops = {
99218fe4 MCC	331	.vidioc_querycap = vidioc_querycap,
	332	.vidioc_g_tuner = vidioc_g_tuner,
	333	.vidioc_s_tuner = vidioc_s_tuner,
676b0ac7 MCC	334	.vidioc_g_audio = vidioc_g_audio,
676b0ac7 MCC	335	.vidioc_s_audio = vidioc_s_audio,
a0c05ab9 MCC	336	.vidioc_g_input = vidioc_g_input,
a0c05ab9 MCC	337	.vidioc_s_input = vidioc_s_input,
99218fe4 MCC	338	.vidioc_g_frequency = vidioc_g_frequency,
	339	.vidioc_s_frequency = vidioc_s_frequency,
	340	.vidioc_queryctrl = vidioc_queryctrl,
	341	.vidioc_g_ctrl = vidioc_g_ctrl,
	342	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	343	};
	344
	345	static int __init aztech_init(void)
	346	{
e697e12e HV	347	struct aztech *az = &aztech_card;
	348	struct v4l2_device *v4l2_dev = &az->v4l2_dev;
	349	int res;
	350
	351	strlcpy(v4l2_dev->name, "aztech", sizeof(v4l2_dev->name));
	352	az->io = io;
	353
	354	if (az->io == -1) {
b24c20cc	355	v4l2_err(v4l2_dev, "you must set an I/O address with io=0x350 or 0x358\n");
1da177e4 LT	356	return -EINVAL;
	357	}
	358
e697e12e HV	359	if (!request_region(az->io, 2, "aztech")) {
e697e12e HV	360	v4l2_err(v4l2_dev, "port 0x%x already in use\n", az->io);
1da177e4 LT	361	return -EBUSY;
	362	}
	363
e697e12e HV	364	res = v4l2_device_register(NULL, v4l2_dev);
	365	if (res < 0) {
	366	release_region(az->io, 2);
	367	v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
	368	return res;
	369	}
4286c6f6	370
e697e12e HV	371	mutex_init(&az->lock);
	372	strlcpy(az->vdev.name, v4l2_dev->name, sizeof(az->vdev.name));
	373	az->vdev.v4l2_dev = v4l2_dev;
	374	az->vdev.fops = &aztech_fops;
	375	az->vdev.ioctl_ops = &aztech_ioctl_ops;
	376	az->vdev.release = video_device_release_empty;
	377	video_set_drvdata(&az->vdev, az);
32958fdd HV	378	/* mute card - prevents noisy bootups */
32958fdd HV	379	outb(0, az->io);
e697e12e HV	380
	381	if (video_register_device(&az->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
	382	v4l2_device_unregister(v4l2_dev);
	383	release_region(az->io, 2);
1da177e4 LT	384	return -EINVAL;
1da177e4 LT	385	}
4286c6f6	386
e697e12e	387	v4l2_info(v4l2_dev, "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
1da177e4 LT	388	return 0;
	389	}
	390
e697e12e	391	static void __exit aztech_exit(void)
1da177e4	392	{
e697e12e HV	393	struct aztech *az = &aztech_card;
	394
	395	video_unregister_device(&az->vdev);
	396	v4l2_device_unregister(&az->v4l2_dev);
	397	release_region(az->io, 2);
1da177e4 LT	398	}
	399
	400	module_init(aztech_init);
e697e12e	401	module_exit(aztech_exit);