[linux-block.git] / drivers / media / radio / radio-timb.c

/*
 * radio-timb.c Timberdale FPGA Radio driver
 * Copyright (c) 2009 Intel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/io.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <media/timb_radio.h>

#define DRIVER_NAME "timb-radio"

struct timbradio {
	struct timb_radio_platform_data	pdata;
	struct v4l2_subdev	*sd_tuner;
	struct v4l2_subdev	*sd_dsp;
	struct video_device	video_dev;
	struct v4l2_device	v4l2_dev;
	struct mutex		lock;
};


static int timbradio_vidioc_querycap(struct file *file, void  *priv,
	struct v4l2_capability *v)
{
	strlcpy(v->driver, DRIVER_NAME, sizeof(v->driver));
	strlcpy(v->card, "Timberdale Radio", sizeof(v->card));
	snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME);
	v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
	return 0;
}

static int timbradio_vidioc_g_tuner(struct file *file, void *priv,
	struct v4l2_tuner *v)
{
	struct timbradio *tr = video_drvdata(file);
	return v4l2_subdev_call(tr->sd_tuner, tuner, g_tuner, v);
}

static int timbradio_vidioc_s_tuner(struct file *file, void *priv,
	struct v4l2_tuner *v)
{
	struct timbradio *tr = video_drvdata(file);
	return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v);
}

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

static int timbradio_vidioc_s_input(struct file *filp, void *priv,
	unsigned int i)
{
	return i ? -EINVAL : 0;
}

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

static int timbradio_vidioc_s_frequency(struct file *file, void *priv,
	const struct v4l2_frequency *f)
{
	struct timbradio *tr = video_drvdata(file);
	return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f);
}

static int timbradio_vidioc_g_frequency(struct file *file, void *priv,
	struct v4l2_frequency *f)
{
	struct timbradio *tr = video_drvdata(file);
	return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f);
}

static int timbradio_vidioc_queryctrl(struct file *file, void *priv,
	struct v4l2_queryctrl *qc)
{
	struct timbradio *tr = video_drvdata(file);
	return v4l2_subdev_call(tr->sd_dsp, core, queryctrl, qc);
}

static int timbradio_vidioc_g_ctrl(struct file *file, void *priv,
	struct v4l2_control *ctrl)
{
	struct timbradio *tr = video_drvdata(file);
	return v4l2_subdev_call(tr->sd_dsp, core, g_ctrl, ctrl);
}

static int timbradio_vidioc_s_ctrl(struct file *file, void *priv,
	struct v4l2_control *ctrl)
{
	struct timbradio *tr = video_drvdata(file);
	return v4l2_subdev_call(tr->sd_dsp, core, s_ctrl, ctrl);
}

static const struct v4l2_ioctl_ops timbradio_ioctl_ops = {
	.vidioc_querycap	= timbradio_vidioc_querycap,
	.vidioc_g_tuner		= timbradio_vidioc_g_tuner,
	.vidioc_s_tuner		= timbradio_vidioc_s_tuner,
	.vidioc_g_frequency	= timbradio_vidioc_g_frequency,
	.vidioc_s_frequency	= timbradio_vidioc_s_frequency,
	.vidioc_g_input		= timbradio_vidioc_g_input,
	.vidioc_s_input		= timbradio_vidioc_s_input,
	.vidioc_g_audio		= timbradio_vidioc_g_audio,
	.vidioc_s_audio		= timbradio_vidioc_s_audio,
	.vidioc_queryctrl	= timbradio_vidioc_queryctrl,
	.vidioc_g_ctrl		= timbradio_vidioc_g_ctrl,
	.vidioc_s_ctrl		= timbradio_vidioc_s_ctrl
};

static const struct v4l2_file_operations timbradio_fops = {
	.owner		= THIS_MODULE,
	.unlocked_ioctl	= video_ioctl2,
};

static int timbradio_probe(struct platform_device *pdev)
{
	struct timb_radio_platform_data *pdata = pdev->dev.platform_data;
	struct timbradio *tr;
	int err;

	if (!pdata) {
		dev_err(&pdev->dev, "Platform data missing\n");
		err = -EINVAL;
		goto err;
	}

	tr = devm_kzalloc(&pdev->dev, sizeof(*tr), GFP_KERNEL);
	if (!tr) {
		err = -ENOMEM;
		goto err;
	}

	tr->pdata = *pdata;
	mutex_init(&tr->lock);

	strlcpy(tr->video_dev.name, "Timberdale Radio",
		sizeof(tr->video_dev.name));
	tr->video_dev.fops = &timbradio_fops;
	tr->video_dev.ioctl_ops = &timbradio_ioctl_ops;
	tr->video_dev.release = video_device_release_empty;
	tr->video_dev.minor = -1;
	tr->video_dev.lock = &tr->lock;

	strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name));
	err = v4l2_device_register(NULL, &tr->v4l2_dev);
	if (err)
		goto err;

	tr->video_dev.v4l2_dev = &tr->v4l2_dev;

	err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1);
	if (err) {
		dev_err(&pdev->dev, "Error reg video\n");
		goto err_video_req;
	}

	video_set_drvdata(&tr->video_dev, tr);

	platform_set_drvdata(pdev, tr);
	return 0;

err_video_req:
	video_device_release_empty(&tr->video_dev);
	v4l2_device_unregister(&tr->v4l2_dev);
err:
	dev_err(&pdev->dev, "Failed to register: %d\n", err);

	return err;
}

static int timbradio_remove(struct platform_device *pdev)
{
	struct timbradio *tr = platform_get_drvdata(pdev);

	video_unregister_device(&tr->video_dev);
	video_device_release_empty(&tr->video_dev);

	v4l2_device_unregister(&tr->v4l2_dev);

	return 0;
}

static struct platform_driver timbradio_platform_driver = {
	.driver = {
		.name	= DRIVER_NAME,
		.owner	= THIS_MODULE,
	},
	.probe		= timbradio_probe,
	.remove		= timbradio_remove,
};

module_platform_driver(timbradio_platform_driver);

MODULE_DESCRIPTION("Timberdale Radio driver");
MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
MODULE_LICENSE("GPL v2");
MODULE_VERSION("0.0.2");
MODULE_ALIAS("platform:"DRIVER_NAME);
Commit	Line	Data
d44d1f3b RR	1	/*
	2	* radio-timb.c Timberdale FPGA Radio driver
	3	* Copyright (c) 2009 Intel Corporation
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	17	*/
	18
d44d1f3b RR	19	#include <linux/io.h>
	20	#include <media/v4l2-ioctl.h>
	21	#include <media/v4l2-device.h>
	22	#include <linux/platform_device.h>
	23	#include <linux/interrupt.h>
5a0e3ad6	24	#include <linux/slab.h>
d44d1f3b	25	#include <linux/i2c.h>
7a707b89	26	#include <linux/module.h>
d44d1f3b RR	27	#include <media/timb_radio.h>
	28
	29	#define DRIVER_NAME "timb-radio"
	30
	31	struct timbradio {
	32	struct timb_radio_platform_data pdata;
	33	struct v4l2_subdev *sd_tuner;
	34	struct v4l2_subdev *sd_dsp;
	35	struct video_device video_dev;
	36	struct v4l2_device v4l2_dev;
4f68775b	37	struct mutex lock;
d44d1f3b RR	38	};
	39
	40
	41	static int timbradio_vidioc_querycap(struct file file, void priv,
	42	struct v4l2_capability *v)
	43	{
	44	strlcpy(v->driver, DRIVER_NAME, sizeof(v->driver));
	45	strlcpy(v->card, "Timberdale Radio", sizeof(v->card));
	46	snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME);
d44d1f3b RR	47	v->capabilities = V4L2_CAP_TUNER \| V4L2_CAP_RADIO;
	48	return 0;
	49	}
	50
	51	static int timbradio_vidioc_g_tuner(struct file file, void priv,
	52	struct v4l2_tuner *v)
	53	{
	54	struct timbradio *tr = video_drvdata(file);
	55	return v4l2_subdev_call(tr->sd_tuner, tuner, g_tuner, v);
	56	}
	57
	58	static int timbradio_vidioc_s_tuner(struct file file, void priv,
	59	struct v4l2_tuner *v)
	60	{
	61	struct timbradio *tr = video_drvdata(file);
	62	return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v);
	63	}
	64
	65	static int timbradio_vidioc_g_input(struct file filp, void priv,
	66	unsigned int *i)
	67	{
	68	*i = 0;
	69	return 0;
	70	}
	71
	72	static int timbradio_vidioc_s_input(struct file filp, void priv,
	73	unsigned int i)
	74	{
	75	return i ? -EINVAL : 0;
	76	}
	77
	78	static int timbradio_vidioc_g_audio(struct file file, void priv,
	79	struct v4l2_audio *a)
	80	{
	81	a->index = 0;
	82	strlcpy(a->name, "Radio", sizeof(a->name));
	83	a->capability = V4L2_AUDCAP_STEREO;
	84	return 0;
	85	}
	86
	87	static int timbradio_vidioc_s_audio(struct file file, void priv,
0e8025b9	88	const struct v4l2_audio *a)
d44d1f3b RR	89	{
	90	return a->index ? -EINVAL : 0;
	91	}
	92
	93	static int timbradio_vidioc_s_frequency(struct file file, void priv,
b530a447	94	const struct v4l2_frequency *f)
d44d1f3b RR	95	{
	96	struct timbradio *tr = video_drvdata(file);
	97	return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f);
	98	}
	99
	100	static int timbradio_vidioc_g_frequency(struct file file, void priv,
	101	struct v4l2_frequency *f)
	102	{
	103	struct timbradio *tr = video_drvdata(file);
	104	return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f);
	105	}
	106
	107	static int timbradio_vidioc_queryctrl(struct file file, void priv,
	108	struct v4l2_queryctrl *qc)
	109	{
	110	struct timbradio *tr = video_drvdata(file);
	111	return v4l2_subdev_call(tr->sd_dsp, core, queryctrl, qc);
	112	}
	113
	114	static int timbradio_vidioc_g_ctrl(struct file file, void priv,
	115	struct v4l2_control *ctrl)
	116	{
	117	struct timbradio *tr = video_drvdata(file);
	118	return v4l2_subdev_call(tr->sd_dsp, core, g_ctrl, ctrl);
	119	}
	120
	121	static int timbradio_vidioc_s_ctrl(struct file file, void priv,
	122	struct v4l2_control *ctrl)
	123	{
	124	struct timbradio *tr = video_drvdata(file);
	125	return v4l2_subdev_call(tr->sd_dsp, core, s_ctrl, ctrl);
	126	}
	127
	128	static const struct v4l2_ioctl_ops timbradio_ioctl_ops = {
	129	.vidioc_querycap = timbradio_vidioc_querycap,
	130	.vidioc_g_tuner = timbradio_vidioc_g_tuner,
	131	.vidioc_s_tuner = timbradio_vidioc_s_tuner,
	132	.vidioc_g_frequency = timbradio_vidioc_g_frequency,
	133	.vidioc_s_frequency = timbradio_vidioc_s_frequency,
	134	.vidioc_g_input = timbradio_vidioc_g_input,
	135	.vidioc_s_input = timbradio_vidioc_s_input,
	136	.vidioc_g_audio = timbradio_vidioc_g_audio,
	137	.vidioc_s_audio = timbradio_vidioc_s_audio,
	138	.vidioc_queryctrl = timbradio_vidioc_queryctrl,
	139	.vidioc_g_ctrl = timbradio_vidioc_g_ctrl,
	140	.vidioc_s_ctrl = timbradio_vidioc_s_ctrl
	141	};
	142
	143	static const struct v4l2_file_operations timbradio_fops = {
	144	.owner = THIS_MODULE,
4f68775b	145	.unlocked_ioctl = video_ioctl2,
d44d1f3b RR	146	};
d44d1f3b RR	147
4c62e976	148	static int timbradio_probe(struct platform_device *pdev)
d44d1f3b	149	{
3271d382	150	struct timb_radio_platform_data *pdata = pdev->dev.platform_data;
d44d1f3b RR	151	struct timbradio *tr;
	152	int err;
	153
	154	if (!pdata) {
	155	dev_err(&pdev->dev, "Platform data missing\n");
	156	err = -EINVAL;
	157	goto err;
	158	}
	159
2f20c490	160	tr = devm_kzalloc(&pdev->dev, sizeof(*tr), GFP_KERNEL);
d44d1f3b RR	161	if (!tr) {
	162	err = -ENOMEM;
	163	goto err;
	164	}
	165
	166	tr->pdata = *pdata;
4f68775b	167	mutex_init(&tr->lock);
d44d1f3b RR	168
	169	strlcpy(tr->video_dev.name, "Timberdale Radio",
	170	sizeof(tr->video_dev.name));
	171	tr->video_dev.fops = &timbradio_fops;
	172	tr->video_dev.ioctl_ops = &timbradio_ioctl_ops;
	173	tr->video_dev.release = video_device_release_empty;
	174	tr->video_dev.minor = -1;
4f68775b	175	tr->video_dev.lock = &tr->lock;
d44d1f3b RR	176
	177	strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name));
	178	err = v4l2_device_register(NULL, &tr->v4l2_dev);
	179	if (err)
2f20c490	180	goto err;
d44d1f3b RR	181
	182	tr->video_dev.v4l2_dev = &tr->v4l2_dev;
	183
	184	err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1);
	185	if (err) {
	186	dev_err(&pdev->dev, "Error reg video\n");
	187	goto err_video_req;
	188	}
	189
	190	video_set_drvdata(&tr->video_dev, tr);
	191
	192	platform_set_drvdata(pdev, tr);
	193	return 0;
	194
	195	err_video_req:
	196	video_device_release_empty(&tr->video_dev);
	197	v4l2_device_unregister(&tr->v4l2_dev);
d44d1f3b RR	198	err:
	199	dev_err(&pdev->dev, "Failed to register: %d\n", err);
	200
	201	return err;
	202	}
	203
4c62e976	204	static int timbradio_remove(struct platform_device *pdev)
d44d1f3b RR	205	{
	206	struct timbradio *tr = platform_get_drvdata(pdev);
	207
	208	video_unregister_device(&tr->video_dev);
	209	video_device_release_empty(&tr->video_dev);
	210
	211	v4l2_device_unregister(&tr->v4l2_dev);
	212
d44d1f3b RR	213	return 0;
	214	}
	215
	216	static struct platform_driver timbradio_platform_driver = {
	217	.driver = {
	218	.name = DRIVER_NAME,
	219	.owner = THIS_MODULE,
	220	},
	221	.probe = timbradio_probe,
4c62e976	222	.remove = timbradio_remove,
d44d1f3b RR	223	};
d44d1f3b RR	224
1d6629b1	225	module_platform_driver(timbradio_platform_driver);
d44d1f3b RR	226
	227	MODULE_DESCRIPTION("Timberdale Radio driver");
	228	MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
	229	MODULE_LICENSE("GPL v2");
29834c1a	230	MODULE_VERSION("0.0.2");
d44d1f3b	231	MODULE_ALIAS("platform:"DRIVER_NAME);