[mirror_ubuntu-jammy-kernel.git] / drivers / media / radio / radio-sf16fmi.c

// SPDX-License-Identifier: GPL-2.0-only
/* SF16-FMI, SF16-FMP and SF16-FMD radio driver for Linux radio support
 * heavily based on rtrack driver...
 * (c) 1997 M. Kirkwood
 * (c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz
 *
 * Fitted to new interface by Alan Cox <alan@lxorguk.ukuu.org.uk>
 * Made working and cleaned up functions <mikael.hedin@irf.se>
 * Support for ISAPnP by Ladislav Michl <ladis@psi.cz>
 *
 * Notes on the hardware
 *
 *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
 *  No volume control - only mute/unmute - you have to use line volume
 *  control on SB-part of SF16-FMI/SF16-FMP/SF16-FMD
 *
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@kernel.org>
 */

#include <linux/kernel.h>	/* __setup			*/
#include <linux/module.h>	/* Modules			*/
#include <linux/init.h>		/* Initdata			*/
#include <linux/ioport.h>	/* request_region		*/
#include <linux/delay.h>	/* udelay			*/
#include <linux/isapnp.h>
#include <linux/mutex.h>
#include <linux/videodev2.h>	/* kernel radio structs		*/
#include <linux/io.h>		/* outb, outb_p			*/
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include "lm7000.h"

MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood");
MODULE_DESCRIPTION("A driver for the SF16-FMI, SF16-FMP and SF16-FMD radio.");
MODULE_LICENSE("GPL");
MODULE_VERSION("0.0.3");

static int io = -1;
static int radio_nr = -1;

module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the SF16-FMI/SF16-FMP/SF16-FMD card (0x284 or 0x384)");
module_param(radio_nr, int, 0);

struct fmi
{
	struct v4l2_device v4l2_dev;
	struct v4l2_ctrl_handler hdl;
	struct video_device vdev;
	int io;
	bool mute;
	u32 curfreq; /* freq in kHz */
	struct mutex lock;
};

static struct fmi fmi_card;
static struct pnp_dev *dev;
static bool pnp_attached;

#define RSF16_MINFREQ (87U * 16000)
#define RSF16_MAXFREQ (108U * 16000)

#define FMI_BIT_TUN_CE		(1 << 0)
#define FMI_BIT_TUN_CLK		(1 << 1)
#define FMI_BIT_TUN_DATA	(1 << 2)
#define FMI_BIT_VOL_SW		(1 << 3)
#define FMI_BIT_TUN_STRQ	(1 << 4)

static void fmi_set_pins(void *handle, u8 pins)
{
	struct fmi *fmi = handle;
	u8 bits = FMI_BIT_TUN_STRQ;

	if (!fmi->mute)
		bits |= FMI_BIT_VOL_SW;

	if (pins & LM7000_DATA)
		bits |= FMI_BIT_TUN_DATA;
	if (pins & LM7000_CLK)
		bits |= FMI_BIT_TUN_CLK;
	if (pins & LM7000_CE)
		bits |= FMI_BIT_TUN_CE;

	mutex_lock(&fmi->lock);
	outb_p(bits, fmi->io);
	mutex_unlock(&fmi->lock);
}

static inline void fmi_mute(struct fmi *fmi)
{
	mutex_lock(&fmi->lock);
	outb(0x00, fmi->io);
	mutex_unlock(&fmi->lock);
}

static inline void fmi_unmute(struct fmi *fmi)
{
	mutex_lock(&fmi->lock);
	outb(0x08, fmi->io);
	mutex_unlock(&fmi->lock);
}

static inline int fmi_getsigstr(struct fmi *fmi)
{
	int val;
	int res;

	mutex_lock(&fmi->lock);
	val = fmi->mute ? 0x00 : 0x08;	/* mute/unmute */
	outb(val, fmi->io);
	outb(val | 0x10, fmi->io);
	msleep(143);		/* was schedule_timeout(HZ/7) */
	res = (int)inb(fmi->io + 1);
	outb(val, fmi->io);

	mutex_unlock(&fmi->lock);
	return (res & 2) ? 0 : 0xFFFF;
}

static void fmi_set_freq(struct fmi *fmi)
{
	fmi->curfreq = clamp(fmi->curfreq, RSF16_MINFREQ, RSF16_MAXFREQ);
	/* rounding in steps of 800 to match the freq
	   that will be used */
	lm7000_set_freq((fmi->curfreq / 800) * 800, fmi, fmi_set_pins);
}

static int vidioc_querycap(struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	strscpy(v->driver, "radio-sf16fmi", sizeof(v->driver));
	strscpy(v->card, "SF16-FMI/FMP/FMD radio", sizeof(v->card));
	strscpy(v->bus_info, "ISA:radio-sf16fmi", sizeof(v->bus_info));
	v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
	v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS;
	return 0;
}

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

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

	strscpy(v->name, "FM", sizeof(v->name));
	v->type = V4L2_TUNER_RADIO;
	v->rangelow = RSF16_MINFREQ;
	v->rangehigh = RSF16_MAXFREQ;
	v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
	v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW;
	v->audmode = V4L2_TUNER_MODE_STEREO;
	v->signal = fmi_getsigstr(fmi);
	return 0;
}

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

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

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

	fmi->curfreq = f->frequency;
	fmi_set_freq(fmi);

	return 0;
}

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

	if (f->tuner != 0)
		return -EINVAL;
	f->type = V4L2_TUNER_RADIO;
	f->frequency = fmi->curfreq;
	return 0;
}

static int fmi_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct fmi *fmi = container_of(ctrl->handler, struct fmi, hdl);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_MUTE:
		if (ctrl->val)
			fmi_mute(fmi);
		else
			fmi_unmute(fmi);
		fmi->mute = ctrl->val;
		return 0;
	}
	return -EINVAL;
}

static const struct v4l2_ctrl_ops fmi_ctrl_ops = {
	.s_ctrl = fmi_s_ctrl,
};

static const struct v4l2_file_operations fmi_fops = {
	.owner		= THIS_MODULE,
	.open		= v4l2_fh_open,
	.release	= v4l2_fh_release,
	.poll		= v4l2_ctrl_poll,
	.unlocked_ioctl	= video_ioctl2,
};

static const struct v4l2_ioctl_ops fmi_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_log_status  = v4l2_ctrl_log_status,
	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};

/* ladis: this is my card. does any other types exist? */
static struct isapnp_device_id id_table[] = {
		/* SF16-FMI */
	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
		ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad10), 0},
		/* SF16-FMD */
	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
		ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad12), 0},
	{	ISAPNP_CARD_END, },
};

MODULE_DEVICE_TABLE(isapnp, id_table);

static int __init isapnp_fmi_probe(void)
{
	int i = 0;

	while (id_table[i].card_vendor != 0 && dev == NULL) {
		dev = pnp_find_dev(NULL, id_table[i].vendor,
				   id_table[i].function, NULL);
		i++;
	}

	if (!dev)
		return -ENODEV;
	if (pnp_device_attach(dev) < 0)
		return -EAGAIN;
	if (pnp_activate_dev(dev) < 0) {
		printk(KERN_ERR "radio-sf16fmi: PnP configure failed (out of resources?)\n");
		pnp_device_detach(dev);
		return -ENOMEM;
	}
	if (!pnp_port_valid(dev, 0)) {
		pnp_device_detach(dev);
		return -ENODEV;
	}

	i = pnp_port_start(dev, 0);
	printk(KERN_INFO "radio-sf16fmi: PnP reports card at %#x\n", i);

	return i;
}

static int __init fmi_init(void)
{
	struct fmi *fmi = &fmi_card;
	struct v4l2_device *v4l2_dev = &fmi->v4l2_dev;
	struct v4l2_ctrl_handler *hdl = &fmi->hdl;
	int res, i;
	int probe_ports[] = { 0, 0x284, 0x384 };

	if (io < 0) {
		for (i = 0; i < ARRAY_SIZE(probe_ports); i++) {
			io = probe_ports[i];
			if (io == 0) {
				io = isapnp_fmi_probe();
				if (io < 0)
					continue;
				pnp_attached = true;
			}
			if (!request_region(io, 2, "radio-sf16fmi")) {
				if (pnp_attached)
					pnp_device_detach(dev);
				io = -1;
				continue;
			}
			if (pnp_attached ||
			    ((inb(io) & 0xf9) == 0xf9 && (inb(io) & 0x4) == 0))
				break;
			release_region(io, 2);
			io = -1;
		}
	} else {
		if (!request_region(io, 2, "radio-sf16fmi")) {
			printk(KERN_ERR "radio-sf16fmi: port %#x already in use\n", io);
			return -EBUSY;
		}
		if (inb(io) == 0xff) {
			printk(KERN_ERR "radio-sf16fmi: card not present at %#x\n", io);
			release_region(io, 2);
			return -ENODEV;
		}
	}
	if (io < 0) {
		printk(KERN_ERR "radio-sf16fmi: no cards found\n");
		return -ENODEV;
	}

	strscpy(v4l2_dev->name, "sf16fmi", sizeof(v4l2_dev->name));
	fmi->io = io;

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

	v4l2_ctrl_handler_init(hdl, 1);
	v4l2_ctrl_new_std(hdl, &fmi_ctrl_ops,
			V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
	v4l2_dev->ctrl_handler = hdl;
	if (hdl->error) {
		res = hdl->error;
		v4l2_err(v4l2_dev, "Could not register controls\n");
		v4l2_ctrl_handler_free(hdl);
		v4l2_device_unregister(v4l2_dev);
		return res;
	}

	strscpy(fmi->vdev.name, v4l2_dev->name, sizeof(fmi->vdev.name));
	fmi->vdev.v4l2_dev = v4l2_dev;
	fmi->vdev.fops = &fmi_fops;
	fmi->vdev.ioctl_ops = &fmi_ioctl_ops;
	fmi->vdev.release = video_device_release_empty;
	video_set_drvdata(&fmi->vdev, fmi);

	mutex_init(&fmi->lock);

	/* mute card and set default frequency */
	fmi->mute = true;
	fmi->curfreq = RSF16_MINFREQ;
	fmi_set_freq(fmi);

	if (video_register_device(&fmi->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
		v4l2_ctrl_handler_free(hdl);
		v4l2_device_unregister(v4l2_dev);
		release_region(fmi->io, 2);
		if (pnp_attached)
			pnp_device_detach(dev);
		return -EINVAL;
	}

	v4l2_info(v4l2_dev, "card driver at 0x%x\n", fmi->io);
	return 0;
}

static void __exit fmi_exit(void)
{
	struct fmi *fmi = &fmi_card;

	v4l2_ctrl_handler_free(&fmi->hdl);
	video_unregister_device(&fmi->vdev);
	v4l2_device_unregister(&fmi->v4l2_dev);
	release_region(fmi->io, 2);
	if (dev && pnp_attached)
		pnp_device_detach(dev);
}

module_init(fmi_init);
module_exit(fmi_exit);
Commit	Line	Data
09c434b8	1	// SPDX-License-Identifier: GPL-2.0-only
abed623c	2	/* SF16-FMI, SF16-FMP and SF16-FMD radio driver for Linux radio support
1da177e4 LT	3	* heavily based on rtrack driver...
	4	* (c) 1997 M. Kirkwood
	5	* (c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz
	6	*
d9b01449	7	* Fitted to new interface by Alan Cox <alan@lxorguk.ukuu.org.uk>
1da177e4 LT	8	* Made working and cleaned up functions <mikael.hedin@irf.se>
	9	* Support for ISAPnP by Ladislav Michl <ladis@psi.cz>
	10	*
	11	* Notes on the hardware
	12	*
	13	* Frequency control is done digitally -- ie out(port,encodefreq(95.8));
	14	* No volume control - only mute/unmute - you have to use line volume
abed623c	15	* control on SB-part of SF16-FMI/SF16-FMP/SF16-FMD
4286c6f6	16	*
32590819	17	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@kernel.org>
1da177e4 LT	18	*/
	19
	20	#include <linux/kernel.h> /* __setup */
6e6a8b5a	21	#include <linux/module.h> /* Modules */
1da177e4	22	#include <linux/init.h> /* Initdata */
fb911ee8	23	#include <linux/ioport.h> /* request_region */
1da177e4	24	#include <linux/delay.h> /* udelay */
1da177e4	25	#include <linux/isapnp.h>
3593cab5	26	#include <linux/mutex.h>
c41269fd HV	27	#include <linux/videodev2.h> /* kernel radio structs */
c41269fd HV	28	#include <linux/io.h> /* outb, outb_p */
c41269fd HV	29	#include <media/v4l2-device.h>
c41269fd HV	30	#include <media/v4l2-ioctl.h>
268d06bb	31	#include <media/v4l2-ctrls.h>
0dc5d82d	32	#include <media/v4l2-event.h>
6b39023a	33	#include "lm7000.h"
1da177e4	34
c41269fd	35	MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood");
abed623c	36	MODULE_DESCRIPTION("A driver for the SF16-FMI, SF16-FMP and SF16-FMD radio.");
c41269fd	37	MODULE_LICENSE("GPL");
29834c1a	38	MODULE_VERSION("0.0.3");
a2ef73af	39
c41269fd HV	40	static int io = -1;
	41	static int radio_nr = -1;
	42
	43	module_param(io, int, 0);
abed623c	44	MODULE_PARM_DESC(io, "I/O address of the SF16-FMI/SF16-FMP/SF16-FMD card (0x284 or 0x384)");
c41269fd HV	45	module_param(radio_nr, int, 0);
c41269fd HV	46
c41269fd	47	struct fmi
1da177e4	48	{
c41269fd	49	struct v4l2_device v4l2_dev;
268d06bb	50	struct v4l2_ctrl_handler hdl;
c41269fd HV	51	struct video_device vdev;
c41269fd HV	52	int io;
4b830374	53	bool mute;
d9ec089e	54	u32 curfreq; /* freq in kHz */
c41269fd	55	struct mutex lock;
1da177e4 LT	56	};
1da177e4 LT	57
c41269fd HV	58	static struct fmi fmi_card;
c41269fd HV	59	static struct pnp_dev *dev;
24c8f11f	60	static bool pnp_attached;
1da177e4	61
96bb42b8 HV	62	#define RSF16_MINFREQ (87U * 16000)
96bb42b8 HV	63	#define RSF16_MAXFREQ (108U * 16000)
1da177e4	64
6b39023a OZ	65	#define FMI_BIT_TUN_CE (1 << 0)
	66	#define FMI_BIT_TUN_CLK (1 << 1)
	67	#define FMI_BIT_TUN_DATA (1 << 2)
	68	#define FMI_BIT_VOL_SW (1 << 3)
	69	#define FMI_BIT_TUN_STRQ (1 << 4)
	70
a5133b17	71	static void fmi_set_pins(void *handle, u8 pins)
1da177e4	72	{
6b39023a OZ	73	struct fmi *fmi = handle;
	74	u8 bits = FMI_BIT_TUN_STRQ;
	75
	76	if (!fmi->mute)
	77	bits \|= FMI_BIT_VOL_SW;
	78
	79	if (pins & LM7000_DATA)
	80	bits \|= FMI_BIT_TUN_DATA;
	81	if (pins & LM7000_CLK)
	82	bits \|= FMI_BIT_TUN_CLK;
	83	if (pins & LM7000_CE)
	84	bits \|= FMI_BIT_TUN_CE;
	85
	86	mutex_lock(&fmi->lock);
	87	outb_p(bits, fmi->io);
	88	mutex_unlock(&fmi->lock);
1da177e4 LT	89	}
1da177e4 LT	90
c41269fd	91	static inline void fmi_mute(struct fmi *fmi)
1da177e4	92	{
c41269fd HV	93	mutex_lock(&fmi->lock);
	94	outb(0x00, fmi->io);
	95	mutex_unlock(&fmi->lock);
1da177e4 LT	96	}
1da177e4 LT	97
c41269fd	98	static inline void fmi_unmute(struct fmi *fmi)
1da177e4	99	{
c41269fd HV	100	mutex_lock(&fmi->lock);
	101	outb(0x08, fmi->io);
	102	mutex_unlock(&fmi->lock);
1da177e4 LT	103	}
1da177e4 LT	104
c41269fd	105	static inline int fmi_getsigstr(struct fmi *fmi)
1da177e4 LT	106	{
	107	int val;
	108	int res;
4286c6f6	109
c41269fd	110	mutex_lock(&fmi->lock);
4b830374	111	val = fmi->mute ? 0x00 : 0x08; /* mute/unmute */
c41269fd HV	112	outb(val, fmi->io);
c41269fd HV	113	outb(val \| 0x10, fmi->io);
6e6a8b5a	114	msleep(143); /* was schedule_timeout(HZ/7) */
c41269fd HV	115	res = (int)inb(fmi->io + 1);
c41269fd HV	116	outb(val, fmi->io);
4286c6f6	117
c41269fd	118	mutex_unlock(&fmi->lock);
1da177e4 LT	119	return (res & 2) ? 0 : 0xFFFF;
	120	}
	121
d9ec089e OZ	122	static void fmi_set_freq(struct fmi *fmi)
	123	{
	124	fmi->curfreq = clamp(fmi->curfreq, RSF16_MINFREQ, RSF16_MAXFREQ);
	125	/* rounding in steps of 800 to match the freq
	126	that will be used */
	127	lm7000_set_freq((fmi->curfreq / 800) * 800, fmi, fmi_set_pins);
	128	}
	129
c123b867 DL	130	static int vidioc_querycap(struct file file, void priv,
c123b867 DL	131	struct v4l2_capability *v)
1da177e4	132	{
c0decac1 MCC	133	strscpy(v->driver, "radio-sf16fmi", sizeof(v->driver));
	134	strscpy(v->card, "SF16-FMI/FMP/FMD radio", sizeof(v->card));
	135	strscpy(v->bus_info, "ISA:radio-sf16fmi", sizeof(v->bus_info));
f90842d6 HV	136	v->device_caps = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
f90842d6 HV	137	v->capabilities = v->device_caps \| V4L2_CAP_DEVICE_CAPS;
c123b867 DL	138	return 0;
	139	}
	140
	141	static int vidioc_g_tuner(struct file file, void priv,
	142	struct v4l2_tuner *v)
	143	{
c41269fd	144	struct fmi *fmi = video_drvdata(file);
c123b867 DL	145
	146	if (v->index > 0)
	147	return -EINVAL;
	148
c0decac1	149	strscpy(v->name, "FM", sizeof(v->name));
c123b867	150	v->type = V4L2_TUNER_RADIO;
1d80db56 HV	151	v->rangelow = RSF16_MINFREQ;
1d80db56 HV	152	v->rangehigh = RSF16_MAXFREQ;
dc47b778	153	v->rxsubchans = V4L2_TUNER_SUB_MONO \| V4L2_TUNER_SUB_STEREO;
38092a44	154	v->capability = V4L2_TUNER_CAP_STEREO \| V4L2_TUNER_CAP_LOW;
c123b867 DL	155	v->audmode = V4L2_TUNER_MODE_STEREO;
	156	v->signal = fmi_getsigstr(fmi);
	157	return 0;
	158	}
4286c6f6	159
c123b867	160	static int vidioc_s_tuner(struct file file, void priv,
2f73c7c5	161	const struct v4l2_tuner *v)
c123b867	162	{
c41269fd	163	return v->index ? -EINVAL : 0;
c123b867	164	}
a2ef73af	165
c123b867	166	static int vidioc_s_frequency(struct file file, void priv,
b530a447	167	const struct v4l2_frequency *f)
c123b867	168	{
c41269fd	169	struct fmi *fmi = video_drvdata(file);
c123b867	170
a3a9e287 HV	171	if (f->tuner != 0 \|\| f->type != V4L2_TUNER_RADIO)
a3a9e287 HV	172	return -EINVAL;
d9ec089e OZ	173
	174	fmi->curfreq = f->frequency;
	175	fmi_set_freq(fmi);
	176
c123b867 DL	177	return 0;
c123b867 DL	178	}
a2ef73af	179
c123b867 DL	180	static int vidioc_g_frequency(struct file file, void priv,
	181	struct v4l2_frequency *f)
	182	{
c41269fd	183	struct fmi *fmi = video_drvdata(file);
a2ef73af	184
a3a9e287 HV	185	if (f->tuner != 0)
a3a9e287 HV	186	return -EINVAL;
c123b867 DL	187	f->type = V4L2_TUNER_RADIO;
c123b867 DL	188	f->frequency = fmi->curfreq;
c123b867 DL	189	return 0;
c123b867 DL	190	}
a2ef73af	191
268d06bb	192	static int fmi_s_ctrl(struct v4l2_ctrl *ctrl)
c123b867	193	{
268d06bb	194	struct fmi *fmi = container_of(ctrl->handler, struct fmi, hdl);
a2ef73af	195
c123b867 DL	196	switch (ctrl->id) {
c123b867 DL	197	case V4L2_CID_AUDIO_MUTE:
268d06bb	198	if (ctrl->val)
c41269fd	199	fmi_mute(fmi);
c123b867	200	else
c41269fd	201	fmi_unmute(fmi);
268d06bb	202	fmi->mute = ctrl->val;
c123b867 DL	203	return 0;
	204	}
	205	return -EINVAL;
	206	}
	207
268d06bb HV	208	static const struct v4l2_ctrl_ops fmi_ctrl_ops = {
	209	.s_ctrl = fmi_s_ctrl,
	210	};
	211
bec43661	212	static const struct v4l2_file_operations fmi_fops = {
1da177e4	213	.owner = THIS_MODULE,
0dc5d82d HV	214	.open = v4l2_fh_open,
	215	.release = v4l2_fh_release,
	216	.poll = v4l2_ctrl_poll,
32958fdd	217	.unlocked_ioctl = video_ioctl2,
1da177e4 LT	218	};
1da177e4 LT	219
a399810c	220	static const struct v4l2_ioctl_ops fmi_ioctl_ops = {
c123b867 DL	221	.vidioc_querycap = vidioc_querycap,
	222	.vidioc_g_tuner = vidioc_g_tuner,
	223	.vidioc_s_tuner = vidioc_s_tuner,
c123b867 DL	224	.vidioc_g_frequency = vidioc_g_frequency,
c123b867 DL	225	.vidioc_s_frequency = vidioc_s_frequency,
0dc5d82d HV	226	.vidioc_log_status = v4l2_ctrl_log_status,
	227	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
	228	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1da177e4 LT	229	};
	230
	231	/* ladis: this is my card. does any other types exist? */
4c62e976	232	static struct isapnp_device_id id_table[] = {
abed623c	233	/* SF16-FMI */
1da177e4 LT	234	{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
1da177e4 LT	235	ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad10), 0},
abed623c OZ	236	/* SF16-FMD */
	237	{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
	238	ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad12), 0},
1da177e4 LT	239	{ ISAPNP_CARD_END, },
	240	};
	241
	242	MODULE_DEVICE_TABLE(isapnp, id_table);
	243
a999337b	244	static int __init isapnp_fmi_probe(void)
1da177e4 LT	245	{
	246	int i = 0;
	247
	248	while (id_table[i].card_vendor != 0 && dev == NULL) {
	249	dev = pnp_find_dev(NULL, id_table[i].vendor,
	250	id_table[i].function, NULL);
	251	i++;
	252	}
	253
	254	if (!dev)
	255	return -ENODEV;
	256	if (pnp_device_attach(dev) < 0)
	257	return -EAGAIN;
	258	if (pnp_activate_dev(dev) < 0) {
c41269fd	259	printk(KERN_ERR "radio-sf16fmi: PnP configure failed (out of resources?)\n");
1da177e4 LT	260	pnp_device_detach(dev);
	261	return -ENOMEM;
	262	}
	263	if (!pnp_port_valid(dev, 0)) {
	264	pnp_device_detach(dev);
	265	return -ENODEV;
	266	}
	267
	268	i = pnp_port_start(dev, 0);
c41269fd	269	printk(KERN_INFO "radio-sf16fmi: PnP reports card at %#x\n", i);
1da177e4 LT	270
	271	return i;
	272	}
	273
	274	static int __init fmi_init(void)
	275	{
c41269fd HV	276	struct fmi *fmi = &fmi_card;
c41269fd HV	277	struct v4l2_device *v4l2_dev = &fmi->v4l2_dev;
268d06bb	278	struct v4l2_ctrl_handler *hdl = &fmi->hdl;
67cabf50 OZ	279	int res, i;
	280	int probe_ports[] = { 0, 0x284, 0x384 };
	281
	282	if (io < 0) {
	283	for (i = 0; i < ARRAY_SIZE(probe_ports); i++) {
	284	io = probe_ports[i];
	285	if (io == 0) {
	286	io = isapnp_fmi_probe();
	287	if (io < 0)
	288	continue;
8b4b6818	289	pnp_attached = true;
67cabf50 OZ	290	}
	291	if (!request_region(io, 2, "radio-sf16fmi")) {
	292	if (pnp_attached)
	293	pnp_device_detach(dev);
	294	io = -1;
	295	continue;
	296	}
	297	if (pnp_attached \|\|
	298	((inb(io) & 0xf9) == 0xf9 && (inb(io) & 0x4) == 0))
	299	break;
	300	release_region(io, 2);
	301	io = -1;
	302	}
	303	} else {
	304	if (!request_region(io, 2, "radio-sf16fmi")) {
	305	printk(KERN_ERR "radio-sf16fmi: port %#x already in use\n", io);
	306	return -EBUSY;
	307	}
	308	if (inb(io) == 0xff) {
	309	printk(KERN_ERR "radio-sf16fmi: card not present at %#x\n", io);
	310	release_region(io, 2);
	311	return -ENODEV;
	312	}
	313	}
	314	if (io < 0) {
	315	printk(KERN_ERR "radio-sf16fmi: no cards found\n");
	316	return -ENODEV;
	317	}
c41269fd	318
c0decac1	319	strscpy(v4l2_dev->name, "sf16fmi", sizeof(v4l2_dev->name));
c41269fd	320	fmi->io = io;
1da177e4	321
c41269fd HV	322	res = v4l2_device_register(NULL, v4l2_dev);
	323	if (res < 0) {
	324	release_region(fmi->io, 2);
67cabf50 OZ	325	if (pnp_attached)
67cabf50 OZ	326	pnp_device_detach(dev);
c41269fd HV	327	v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
	328	return res;
	329	}
	330
268d06bb HV	331	v4l2_ctrl_handler_init(hdl, 1);
	332	v4l2_ctrl_new_std(hdl, &fmi_ctrl_ops,
	333	V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
	334	v4l2_dev->ctrl_handler = hdl;
	335	if (hdl->error) {
	336	res = hdl->error;
	337	v4l2_err(v4l2_dev, "Could not register controls\n");
	338	v4l2_ctrl_handler_free(hdl);
	339	v4l2_device_unregister(v4l2_dev);
	340	return res;
	341	}
	342
c0decac1	343	strscpy(fmi->vdev.name, v4l2_dev->name, sizeof(fmi->vdev.name));
c41269fd HV	344	fmi->vdev.v4l2_dev = v4l2_dev;
	345	fmi->vdev.fops = &fmi_fops;
	346	fmi->vdev.ioctl_ops = &fmi_ioctl_ops;
	347	fmi->vdev.release = video_device_release_empty;
	348	video_set_drvdata(&fmi->vdev, fmi);
4286c6f6	349
c41269fd	350	mutex_init(&fmi->lock);
4286c6f6	351
d9ec089e	352	/* mute card and set default frequency */
8b4b6818	353	fmi->mute = true;
d9ec089e OZ	354	fmi->curfreq = RSF16_MINFREQ;
d9ec089e OZ	355	fmi_set_freq(fmi);
32958fdd	356
c41269fd	357	if (video_register_device(&fmi->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
268d06bb	358	v4l2_ctrl_handler_free(hdl);
c41269fd HV	359	v4l2_device_unregister(v4l2_dev);
c41269fd HV	360	release_region(fmi->io, 2);
67cabf50 OZ	361	if (pnp_attached)
67cabf50 OZ	362	pnp_device_detach(dev);
1da177e4 LT	363	return -EINVAL;
1da177e4 LT	364	}
4286c6f6	365
c41269fd	366	v4l2_info(v4l2_dev, "card driver at 0x%x\n", fmi->io);
1da177e4 LT	367	return 0;
	368	}
	369
c41269fd	370	static void __exit fmi_exit(void)
1da177e4	371	{
c41269fd HV	372	struct fmi *fmi = &fmi_card;
c41269fd HV	373
268d06bb	374	v4l2_ctrl_handler_free(&fmi->hdl);
c41269fd HV	375	video_unregister_device(&fmi->vdev);
	376	v4l2_device_unregister(&fmi->v4l2_dev);
	377	release_region(fmi->io, 2);
67cabf50	378	if (dev && pnp_attached)
1da177e4 LT	379	pnp_device_detach(dev);
	380	}
	381
	382	module_init(fmi_init);
c41269fd	383	module_exit(fmi_exit);