[deliverable/linux.git] / drivers / media / usb / au0828 / au0828-core.c

/*
 *  Driver for the Auvitek USB bridge
 *
 *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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 "au0828.h"

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <linux/mutex.h>

/* Due to enum tuner_pad_index */
#include <media/tuner.h>

/*
 * 1 = General debug messages
 * 2 = USB handling
 * 4 = I2C related
 * 8 = Bridge related
 * 16 = IR related
 */
int au0828_debug;
module_param_named(debug, au0828_debug, int, 0644);
MODULE_PARM_DESC(debug,
		 "set debug bitmask: 1=general, 2=USB, 4=I2C, 8=bridge, 16=IR");

static unsigned int disable_usb_speed_check;
module_param(disable_usb_speed_check, int, 0444);
MODULE_PARM_DESC(disable_usb_speed_check,
		 "override min bandwidth requirement of 480M bps");

#define _AU0828_BULKPIPE 0x03
#define _BULKPIPESIZE 0xffff

static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
			    u16 index);
static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
	u16 index, unsigned char *cp, u16 size);

/* USB Direction */
#define CMD_REQUEST_IN		0x00
#define CMD_REQUEST_OUT		0x01

u32 au0828_readreg(struct au0828_dev *dev, u16 reg)
{
	u8 result = 0;

	recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, &result, 1);
	dprintk(8, "%s(0x%04x) = 0x%02x\n", __func__, reg, result);

	return result;
}

u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val)
{
	dprintk(8, "%s(0x%04x, 0x%02x)\n", __func__, reg, val);
	return send_control_msg(dev, CMD_REQUEST_OUT, val, reg);
}

static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
	u16 index)
{
	int status = -ENODEV;

	if (dev->usbdev) {

		/* cp must be memory that has been allocated by kmalloc */
		status = usb_control_msg(dev->usbdev,
				usb_sndctrlpipe(dev->usbdev, 0),
				request,
				USB_DIR_OUT | USB_TYPE_VENDOR |
					USB_RECIP_DEVICE,
				value, index, NULL, 0, 1000);

		status = min(status, 0);

		if (status < 0) {
			pr_err("%s() Failed sending control message, error %d.\n",
				__func__, status);
		}

	}

	return status;
}

static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
	u16 index, unsigned char *cp, u16 size)
{
	int status = -ENODEV;
	mutex_lock(&dev->mutex);
	if (dev->usbdev) {
		status = usb_control_msg(dev->usbdev,
				usb_rcvctrlpipe(dev->usbdev, 0),
				request,
				USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
				value, index,
				dev->ctrlmsg, size, 1000);

		status = min(status, 0);

		if (status < 0) {
			pr_err("%s() Failed receiving control message, error %d.\n",
				__func__, status);
		}

		/* the host controller requires heap allocated memory, which
		   is why we didn't just pass "cp" into usb_control_msg */
		memcpy(cp, dev->ctrlmsg, size);
	}
	mutex_unlock(&dev->mutex);
	return status;
}

static void au0828_unregister_media_device(struct au0828_dev *dev)
{

#ifdef CONFIG_MEDIA_CONTROLLER
	if (dev->media_dev) {
		media_device_unregister(dev->media_dev);
		kfree(dev->media_dev);
		dev->media_dev = NULL;
	}
#endif
}

static void au0828_usb_release(struct au0828_dev *dev)
{
	au0828_unregister_media_device(dev);

	/* I2C */
	au0828_i2c_unregister(dev);

	kfree(dev);
}

#ifdef CONFIG_VIDEO_AU0828_V4L2

static void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
	int i;

	for (i = 0; i < AU0828_MAX_INPUT; i++) {
		if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
			return;
		media_device_unregister_entity(&dev->input_ent[i]);
	}
#endif
}

static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
{
	struct au0828_dev *dev =
		container_of(v4l2_dev, struct au0828_dev, v4l2_dev);

	v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
	v4l2_device_unregister(&dev->v4l2_dev);
	au0828_usb_v4l2_media_release(dev);
	au0828_usb_release(dev);
}
#endif

static void au0828_usb_disconnect(struct usb_interface *interface)
{
	struct au0828_dev *dev = usb_get_intfdata(interface);

	dprintk(1, "%s()\n", __func__);

	/* there is a small window after disconnect, before
	   dev->usbdev is NULL, for poll (e.g: IR) try to access
	   the device and fill the dmesg with error messages.
	   Set the status so poll routines can check and avoid
	   access after disconnect.
	*/
	dev->dev_state = DEV_DISCONNECTED;

	au0828_rc_unregister(dev);
	/* Digital TV */
	au0828_dvb_unregister(dev);

	usb_set_intfdata(interface, NULL);
	mutex_lock(&dev->mutex);
	dev->usbdev = NULL;
	mutex_unlock(&dev->mutex);
#ifdef CONFIG_VIDEO_AU0828_V4L2
	if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED) {
		au0828_analog_unregister(dev);
		v4l2_device_disconnect(&dev->v4l2_dev);
		v4l2_device_put(&dev->v4l2_dev);
		/*
		 * No need to call au0828_usb_release() if V4L2 is enabled,
		 * as this is already called via au0828_usb_v4l2_release()
		 */
		return;
	}
#endif
	au0828_usb_release(dev);
}

static void au0828_media_device_register(struct au0828_dev *dev,
					  struct usb_device *udev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
	struct media_device *mdev;
	int ret;

	mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
	if (!mdev)
		return;

	mdev->dev = &udev->dev;

	if (!dev->board.name)
		strlcpy(mdev->model, "unknown au0828", sizeof(mdev->model));
	else
		strlcpy(mdev->model, dev->board.name, sizeof(mdev->model));
	if (udev->serial)
		strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial));
	strcpy(mdev->bus_info, udev->devpath);
	mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
	mdev->driver_version = LINUX_VERSION_CODE;

	ret = media_device_register(mdev);
	if (ret) {
		pr_err(
			"Couldn't create a media device. Error: %d\n",
			ret);
		kfree(mdev);
		return;
	}

	dev->media_dev = mdev;
#endif
}


static int au0828_create_media_graph(struct au0828_dev *dev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
	struct media_device *mdev = dev->media_dev;
	struct media_entity *entity;
	struct media_entity *tuner = NULL, *decoder = NULL;
	int i, ret;

	if (!mdev)
		return 0;

	media_device_for_each_entity(entity, mdev) {
		switch (entity->function) {
		case MEDIA_ENT_F_TUNER:
			tuner = entity;
			break;
		case MEDIA_ENT_F_ATV_DECODER:
			decoder = entity;
			break;
		}
	}

	/* Analog setup, using tuner as a link */

	/* Something bad happened! */
	if (!decoder)
		return -EINVAL;

	if (tuner) {
		ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT,
					    decoder, 0,
					    MEDIA_LNK_FL_ENABLED);
		if (ret)
			return ret;
	}
	ret = media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
				    MEDIA_LNK_FL_ENABLED);
	if (ret)
		return ret;
	ret = media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0,
				    MEDIA_LNK_FL_ENABLED);
	if (ret)
		return ret;

	for (i = 0; i < AU0828_MAX_INPUT; i++) {
		struct media_entity *ent = &dev->input_ent[i];

		if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
			break;

		switch (AUVI_INPUT(i).type) {
		case AU0828_VMUX_CABLE:
		case AU0828_VMUX_TELEVISION:
		case AU0828_VMUX_DVB:
			if (!tuner)
				break;

			ret = media_create_pad_link(ent, 0, tuner,
						    TUNER_PAD_RF_INPUT,
						    MEDIA_LNK_FL_ENABLED);
			if (ret)
				return ret;
			break;
		case AU0828_VMUX_COMPOSITE:
		case AU0828_VMUX_SVIDEO:
		default: /* AU0828_VMUX_DEBUG */
			/* FIXME: fix the decoder PAD */
			ret = media_create_pad_link(ent, 0, decoder, 0, 0);
			if (ret)
				return ret;
			break;
		}
	}
#endif
	return 0;
}

static int au0828_usb_probe(struct usb_interface *interface,
	const struct usb_device_id *id)
{
	int ifnum;
	int retval = 0;

	struct au0828_dev *dev;
	struct usb_device *usbdev = interface_to_usbdev(interface);

	ifnum = interface->altsetting->desc.bInterfaceNumber;

	if (ifnum != 0)
		return -ENODEV;

	dprintk(1, "%s() vendor id 0x%x device id 0x%x ifnum:%d\n", __func__,
		le16_to_cpu(usbdev->descriptor.idVendor),
		le16_to_cpu(usbdev->descriptor.idProduct),
		ifnum);

	/*
	 * Make sure we have 480 Mbps of bandwidth, otherwise things like
	 * video stream wouldn't likely work, since 12 Mbps is generally
	 * not enough even for most Digital TV streams.
	 */
	if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) {
		pr_err("au0828: Device initialization failed.\n");
		pr_err("au0828: Device must be connected to a high-speed USB 2.0 port.\n");
		return -ENODEV;
	}

	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	if (dev == NULL) {
		pr_err("%s() Unable to allocate memory\n", __func__);
		return -ENOMEM;
	}

	mutex_init(&dev->lock);
	mutex_lock(&dev->lock);
	mutex_init(&dev->mutex);
	mutex_init(&dev->dvb.lock);
	dev->usbdev = usbdev;
	dev->boardnr = id->driver_info;
	dev->board = au0828_boards[dev->boardnr];

	/* Register the media controller */
	au0828_media_device_register(dev, usbdev);

#ifdef CONFIG_VIDEO_AU0828_V4L2
	dev->v4l2_dev.release = au0828_usb_v4l2_release;

	/* Create the v4l2_device */
#ifdef CONFIG_MEDIA_CONTROLLER
	dev->v4l2_dev.mdev = dev->media_dev;
#endif
	retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
	if (retval) {
		pr_err("%s() v4l2_device_register failed\n",
		       __func__);
		mutex_unlock(&dev->lock);
		kfree(dev);
		return retval;
	}
	/* This control handler will inherit the controls from au8522 */
	retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
	if (retval) {
		pr_err("%s() v4l2_ctrl_handler_init failed\n",
		       __func__);
		mutex_unlock(&dev->lock);
		kfree(dev);
		return retval;
	}
	dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
#endif

	/* Power Up the bridge */
	au0828_write(dev, REG_600, 1 << 4);

	/* Bring up the GPIO's and supporting devices */
	au0828_gpio_setup(dev);

	/* I2C */
	au0828_i2c_register(dev);

	/* Setup */
	au0828_card_setup(dev);

#ifdef CONFIG_VIDEO_AU0828_V4L2
	/* Analog TV */
	if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED)
		au0828_analog_register(dev, interface);
#endif

	/* Digital TV */
	retval = au0828_dvb_register(dev);
	if (retval)
		pr_err("%s() au0282_dev_register failed\n",
		       __func__);

	/* Remote controller */
	au0828_rc_register(dev);

	/*
	 * Store the pointer to the au0828_dev so it can be accessed in
	 * au0828_usb_disconnect
	 */
	usb_set_intfdata(interface, dev);

	pr_info("Registered device AU0828 [%s]\n",
		dev->board.name == NULL ? "Unset" : dev->board.name);

	mutex_unlock(&dev->lock);

	retval = au0828_create_media_graph(dev);
	if (retval) {
		pr_err("%s() au0282_dev_register failed to create graph\n",
		       __func__);
		au0828_usb_disconnect(interface);
	}

	return retval;
}

static int au0828_suspend(struct usb_interface *interface,
				pm_message_t message)
{
	struct au0828_dev *dev = usb_get_intfdata(interface);

	if (!dev)
		return 0;

	pr_info("Suspend\n");

	au0828_rc_suspend(dev);
	au0828_v4l2_suspend(dev);
	au0828_dvb_suspend(dev);

	/* FIXME: should suspend also ATV/DTV */

	return 0;
}

static int au0828_resume(struct usb_interface *interface)
{
	struct au0828_dev *dev = usb_get_intfdata(interface);
	if (!dev)
		return 0;

	pr_info("Resume\n");

	/* Power Up the bridge */
	au0828_write(dev, REG_600, 1 << 4);

	/* Bring up the GPIO's and supporting devices */
	au0828_gpio_setup(dev);

	au0828_rc_resume(dev);
	au0828_v4l2_resume(dev);
	au0828_dvb_resume(dev);

	/* FIXME: should resume also ATV/DTV */

	return 0;
}

static struct usb_driver au0828_usb_driver = {
	.name		= KBUILD_MODNAME,
	.probe		= au0828_usb_probe,
	.disconnect	= au0828_usb_disconnect,
	.id_table	= au0828_usb_id_table,
	.suspend	= au0828_suspend,
	.resume		= au0828_resume,
	.reset_resume	= au0828_resume,
};

static int __init au0828_init(void)
{
	int ret;

	if (au0828_debug & 1)
		pr_info("%s() Debugging is enabled\n", __func__);

	if (au0828_debug & 2)
		pr_info("%s() USB Debugging is enabled\n", __func__);

	if (au0828_debug & 4)
		pr_info("%s() I2C Debugging is enabled\n", __func__);

	if (au0828_debug & 8)
		pr_info("%s() Bridge Debugging is enabled\n",
		       __func__);

	if (au0828_debug & 16)
		pr_info("%s() IR Debugging is enabled\n",
		       __func__);

	pr_info("au0828 driver loaded\n");

	ret = usb_register(&au0828_usb_driver);
	if (ret)
		pr_err("usb_register failed, error = %d\n", ret);

	return ret;
}

static void __exit au0828_exit(void)
{
	usb_deregister(&au0828_usb_driver);
}

module_init(au0828_init);
module_exit(au0828_exit);

MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products");
MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>");
MODULE_LICENSE("GPL");
MODULE_VERSION("0.0.3");
Commit	Line	Data
265a6510 ST	1	/*
	2	* Driver for the Auvitek USB bridge
	3	*
6d897616	4	* Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
265a6510 ST	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	*
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	20	*/
	21
83afb32a MCC	22	#include "au0828.h"
83afb32a MCC	23
265a6510	24	#include <linux/module.h>
5a0e3ad6	25	#include <linux/slab.h>
265a6510 ST	26	#include <linux/videodev2.h>
	27	#include <media/v4l2-common.h>
	28	#include <linux/mutex.h>
	29
188d2d55 MCC	30	/* Due to enum tuner_pad_index */
	31	#include <media/tuner.h>
	32
bc3c613c ST	33	/*
	34	* 1 = General debug messages
	35	* 2 = USB handling
	36	* 4 = I2C related
	37	* 8 = Bridge related
2fcfd317	38	* 16 = IR related
bc3c613c	39	*/
b33d24c4 AB	40	int au0828_debug;
b33d24c4 AB	41	module_param_named(debug, au0828_debug, int, 0644);
2fcfd317 MCC	42	MODULE_PARM_DESC(debug,
2fcfd317 MCC	43	"set debug bitmask: 1=general, 2=USB, 4=I2C, 8=bridge, 16=IR");
265a6510	44
d6a9a430 DH	45	static unsigned int disable_usb_speed_check;
	46	module_param(disable_usb_speed_check, int, 0444);
	47	MODULE_PARM_DESC(disable_usb_speed_check,
	48	"override min bandwidth requirement of 480M bps");
	49
265a6510 ST	50	#define _AU0828_BULKPIPE 0x03
	51	#define _BULKPIPESIZE 0xffff
	52
	53	static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
8ff63de6	54	u16 index);
265a6510 ST	55	static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
	56	u16 index, unsigned char *cp, u16 size);
	57
	58	/* USB Direction */
	59	#define CMD_REQUEST_IN 0x00
	60	#define CMD_REQUEST_OUT 0x01
	61
	62	u32 au0828_readreg(struct au0828_dev *dev, u16 reg)
	63	{
77fc2863 DH	64	u8 result = 0;
	65
	66	recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, &result, 1);
	67	dprintk(8, "%s(0x%04x) = 0x%02x\n", __func__, reg, result);
	68
	69	return result;
265a6510 ST	70	}
	71
	72	u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val)
	73	{
b80f770a	74	dprintk(8, "%s(0x%04x, 0x%02x)\n", __func__, reg, val);
8ff63de6	75	return send_control_msg(dev, CMD_REQUEST_OUT, val, reg);
265a6510 ST	76	}
265a6510 ST	77
265a6510	78	static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
8ff63de6	79	u16 index)
265a6510 ST	80	{
265a6510 ST	81	int status = -ENODEV;
8ff63de6	82
265a6510 ST	83	if (dev->usbdev) {
	84
	85	/* cp must be memory that has been allocated by kmalloc */
	86	status = usb_control_msg(dev->usbdev,
	87	usb_sndctrlpipe(dev->usbdev, 0),
	88	request,
a8eb912c ST	89	USB_DIR_OUT \| USB_TYPE_VENDOR \|
a8eb912c ST	90	USB_RECIP_DEVICE,
8ff63de6	91	value, index, NULL, 0, 1000);
265a6510 ST	92
	93	status = min(status, 0);
	94
	95	if (status < 0) {
83afb32a	96	pr_err("%s() Failed sending control message, error %d.\n",
f07e8e4b	97	__func__, status);
265a6510 ST	98	}
	99
	100	}
8ff63de6	101
265a6510 ST	102	return status;
	103	}
	104
	105	static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
	106	u16 index, unsigned char *cp, u16 size)
	107	{
	108	int status = -ENODEV;
	109	mutex_lock(&dev->mutex);
	110	if (dev->usbdev) {
265a6510 ST	111	status = usb_control_msg(dev->usbdev,
	112	usb_rcvctrlpipe(dev->usbdev, 0),
	113	request,
	114	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	115	value, index,
77fc2863	116	dev->ctrlmsg, size, 1000);
265a6510 ST	117
	118	status = min(status, 0);
	119
	120	if (status < 0) {
83afb32a	121	pr_err("%s() Failed receiving control message, error %d.\n",
f07e8e4b	122	__func__, status);
77fc2863 DH	123	}
	124
	125	/* the host controller requires heap allocated memory, which
	126	is why we didn't just pass "cp" into usb_control_msg */
	127	memcpy(cp, dev->ctrlmsg, size);
265a6510 ST	128	}
	129	mutex_unlock(&dev->mutex);
	130	return status;
	131	}
a9c36aad	132
bed69196 RLLC	133	static void au0828_unregister_media_device(struct au0828_dev *dev)
	134	{
	135
	136	#ifdef CONFIG_MEDIA_CONTROLLER
	137	if (dev->media_dev) {
	138	media_device_unregister(dev->media_dev);
	139	kfree(dev->media_dev);
	140	dev->media_dev = NULL;
	141	}
	142	#endif
	143	}
	144
823beb7e	145	static void au0828_usb_release(struct au0828_dev *dev)
265a6510	146	{
bed69196 RLLC	147	au0828_unregister_media_device(dev);
bed69196 RLLC	148
265a6510 ST	149	/* I2C */
	150	au0828_i2c_unregister(dev);
	151
823beb7e HV	152	kfree(dev);
	153	}
	154
8a4e7866	155	#ifdef CONFIG_VIDEO_AU0828_V4L2
d1f33737 MCC	156
	157	static void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
	158	{
	159	#ifdef CONFIG_MEDIA_CONTROLLER
	160	int i;
	161
	162	for (i = 0; i < AU0828_MAX_INPUT; i++) {
	163	if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
	164	return;
	165	media_device_unregister_entity(&dev->input_ent[i]);
	166	}
	167	#endif
	168	}
	169
823beb7e HV	170	static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
	171	{
	172	struct au0828_dev *dev =
	173	container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
	174
e8c26f45	175	v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
b14667f3	176	v4l2_device_unregister(&dev->v4l2_dev);
4e26f3ab	177	au0828_usb_v4l2_media_release(dev);
823beb7e HV	178	au0828_usb_release(dev);
823beb7e HV	179	}
8a4e7866	180	#endif
b14667f3	181
823beb7e HV	182	static void au0828_usb_disconnect(struct usb_interface *interface)
	183	{
	184	struct au0828_dev *dev = usb_get_intfdata(interface);
	185
	186	dprintk(1, "%s()\n", __func__);
	187
eb336eab SK	188	/* there is a small window after disconnect, before
	189	dev->usbdev is NULL, for poll (e.g: IR) try to access
	190	the device and fill the dmesg with error messages.
	191	Set the status so poll routines can check and avoid
	192	access after disconnect.
	193	*/
	194	dev->dev_state = DEV_DISCONNECTED;
	195
2fcfd317	196	au0828_rc_unregister(dev);
823beb7e HV	197	/* Digital TV */
823beb7e HV	198	au0828_dvb_unregister(dev);
265a6510	199
823beb7e	200	usb_set_intfdata(interface, NULL);
265a6510 ST	201	mutex_lock(&dev->mutex);
	202	dev->usbdev = NULL;
	203	mutex_unlock(&dev->mutex);
823beb7e HV	204	#ifdef CONFIG_VIDEO_AU0828_V4L2
	205	if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED) {
	206	au0828_analog_unregister(dev);
	207	v4l2_device_disconnect(&dev->v4l2_dev);
	208	v4l2_device_put(&dev->v4l2_dev);
7e9a8ad5 MCC	209	/*
	210	* No need to call au0828_usb_release() if V4L2 is enabled,
	211	* as this is already called via au0828_usb_v4l2_release()
	212	*/
823beb7e HV	213	return;
	214	}
	215	#endif
	216	au0828_usb_release(dev);
265a6510 ST	217	}
265a6510 ST	218
bed69196 RLLC	219	static void au0828_media_device_register(struct au0828_dev *dev,
	220	struct usb_device *udev)
	221	{
	222	#ifdef CONFIG_MEDIA_CONTROLLER
	223	struct media_device *mdev;
	224	int ret;
	225
	226	mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
	227	if (!mdev)
	228	return;
	229
	230	mdev->dev = &udev->dev;
	231
	232	if (!dev->board.name)
	233	strlcpy(mdev->model, "unknown au0828", sizeof(mdev->model));
	234	else
	235	strlcpy(mdev->model, dev->board.name, sizeof(mdev->model));
	236	if (udev->serial)
	237	strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial));
	238	strcpy(mdev->bus_info, udev->devpath);
	239	mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
	240	mdev->driver_version = LINUX_VERSION_CODE;
	241
	242	ret = media_device_register(mdev);
	243	if (ret) {
	244	pr_err(
	245	"Couldn't create a media device. Error: %d\n",
	246	ret);
	247	kfree(mdev);
	248	return;
	249	}
	250
	251	dev->media_dev = mdev;
	252	#endif
	253	}
	254
	255
4e26f3ab	256	static int au0828_create_media_graph(struct au0828_dev *dev)
bed69196 RLLC	257	{
	258	#ifdef CONFIG_MEDIA_CONTROLLER
	259	struct media_device *mdev = dev->media_dev;
	260	struct media_entity *entity;
	261	struct media_entity tuner = NULL, decoder = NULL;
4e26f3ab	262	int i, ret;
bed69196 RLLC	263
bed69196 RLLC	264	if (!mdev)
4e26f3ab	265	return 0;
bed69196 RLLC	266
bed69196 RLLC	267	media_device_for_each_entity(entity, mdev) {
0e576b76	268	switch (entity->function) {
4ca72efa	269	case MEDIA_ENT_F_TUNER:
bed69196 RLLC	270	tuner = entity;
bed69196 RLLC	271	break;
4ca72efa	272	case MEDIA_ENT_F_ATV_DECODER:
bed69196 RLLC	273	decoder = entity;
	274	break;
	275	}
	276	}
	277
	278	/* Analog setup, using tuner as a link */
	279
28b6ba11	280	/* Something bad happened! */
bed69196	281	if (!decoder)
4e26f3ab MCC	282	return -EINVAL;
	283
	284	if (tuner) {
	285	ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT,
	286	decoder, 0,
	287	MEDIA_LNK_FL_ENABLED);
	288	if (ret)
	289	return ret;
	290	}
	291	ret = media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
	292	MEDIA_LNK_FL_ENABLED);
	293	if (ret)
	294	return ret;
	295	ret = media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0,
	296	MEDIA_LNK_FL_ENABLED);
	297	if (ret)
	298	return ret;
28b6ba11 MCC	299
	300	for (i = 0; i < AU0828_MAX_INPUT; i++) {
	301	struct media_entity *ent = &dev->input_ent[i];
	302
	303	if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
	304	break;
	305
	306	switch (AUVI_INPUT(i).type) {
	307	case AU0828_VMUX_CABLE:
	308	case AU0828_VMUX_TELEVISION:
	309	case AU0828_VMUX_DVB:
4e26f3ab MCC	310	if (!tuner)
	311	break;
	312
	313	ret = media_create_pad_link(ent, 0, tuner,
	314	TUNER_PAD_RF_INPUT,
	315	MEDIA_LNK_FL_ENABLED);
	316	if (ret)
	317	return ret;
28b6ba11 MCC	318	break;
	319	case AU0828_VMUX_COMPOSITE:
	320	case AU0828_VMUX_SVIDEO:
	321	default: /* AU0828_VMUX_DEBUG */
	322	/* FIXME: fix the decoder PAD */
4e26f3ab MCC	323	ret = media_create_pad_link(ent, 0, decoder, 0, 0);
	324	if (ret)
	325	return ret;
28b6ba11 MCC	326	break;
	327	}
	328	}
bed69196	329	#endif
4e26f3ab	330	return 0;
bed69196 RLLC	331	}
bed69196 RLLC	332
18d73c58	333	static int au0828_usb_probe(struct usb_interface *interface,
265a6510 ST	334	const struct usb_device_id *id)
265a6510 ST	335	{
8a4e7866	336	int ifnum;
f251b3e7 TM	337	int retval = 0;
f251b3e7 TM	338
265a6510 ST	339	struct au0828_dev *dev;
	340	struct usb_device *usbdev = interface_to_usbdev(interface);
	341
	342	ifnum = interface->altsetting->desc.bInterfaceNumber;
	343
	344	if (ifnum != 0)
	345	return -ENODEV;
	346
a9c36aad	347	dprintk(1, "%s() vendor id 0x%x device id 0x%x ifnum:%d\n", __func__,
265a6510 ST	348	le16_to_cpu(usbdev->descriptor.idVendor),
	349	le16_to_cpu(usbdev->descriptor.idProduct),
	350	ifnum);
	351
ee3436b8 DH	352	/*
	353	* Make sure we have 480 Mbps of bandwidth, otherwise things like
	354	* video stream wouldn't likely work, since 12 Mbps is generally
	355	* not enough even for most Digital TV streams.
	356	*/
d6a9a430	357	if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) {
83afb32a MCC	358	pr_err("au0828: Device initialization failed.\n");
83afb32a MCC	359	pr_err("au0828: Device must be connected to a high-speed USB 2.0 port.\n");
ee3436b8 DH	360	return -ENODEV;
	361	}
	362
265a6510 ST	363	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
265a6510 ST	364	if (dev == NULL) {
83afb32a	365	pr_err("%s() Unable to allocate memory\n", __func__);
265a6510 ST	366	return -ENOMEM;
	367	}
	368
549ee4df DH	369	mutex_init(&dev->lock);
549ee4df DH	370	mutex_lock(&dev->lock);
265a6510 ST	371	mutex_init(&dev->mutex);
	372	mutex_init(&dev->dvb.lock);
	373	dev->usbdev = usbdev;
f1add5b5	374	dev->boardnr = id->driver_info;
e42c8c6e RLLC	375	dev->board = au0828_boards[dev->boardnr];
e42c8c6e RLLC	376
bed69196 RLLC	377	/* Register the media controller */
bed69196 RLLC	378	au0828_media_device_register(dev, usbdev);
265a6510	379
8a4e7866	380	#ifdef CONFIG_VIDEO_AU0828_V4L2
823beb7e HV	381	dev->v4l2_dev.release = au0828_usb_v4l2_release;
823beb7e HV	382
b14667f3	383	/* Create the v4l2_device */
bed69196 RLLC	384	#ifdef CONFIG_MEDIA_CONTROLLER
	385	dev->v4l2_dev.mdev = dev->media_dev;
	386	#endif
a4124aa9	387	retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
b14667f3	388	if (retval) {
e8c26f45	389	pr_err("%s() v4l2_device_register failed\n",
b14667f3	390	__func__);
549ee4df	391	mutex_unlock(&dev->lock);
b14667f3	392	kfree(dev);
e8c26f45	393	return retval;
b14667f3	394	}
e8c26f45 HV	395	/* This control handler will inherit the controls from au8522 */
	396	retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
	397	if (retval) {
	398	pr_err("%s() v4l2_ctrl_handler_init failed\n",
	399	__func__);
	400	mutex_unlock(&dev->lock);
	401	kfree(dev);
	402	return retval;
	403	}
	404	dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
8a4e7866	405	#endif
b14667f3	406
265a6510 ST	407	/* Power Up the bridge */
	408	au0828_write(dev, REG_600, 1 << 4);
	409
	410	/* Bring up the GPIO's and supporting devices */
	411	au0828_gpio_setup(dev);
	412
	413	/* I2C */
	414	au0828_i2c_register(dev);
	415
28930fa9 ST	416	/* Setup */
	417	au0828_card_setup(dev);
	418
8a4e7866	419	#ifdef CONFIG_VIDEO_AU0828_V4L2
8b2f0795	420	/* Analog TV */
220be77c	421	if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED)
fc4ce6cd	422	au0828_analog_register(dev, interface);
8a4e7866	423	#endif
8b2f0795	424
265a6510	425	/* Digital TV */
f251b3e7 TM	426	retval = au0828_dvb_register(dev);
	427	if (retval)
	428	pr_err("%s() au0282_dev_register failed\n",
	429	__func__);
	430
2fcfd317 MCC	431	/* Remote controller */
2fcfd317 MCC	432	au0828_rc_register(dev);
265a6510	433
2fcfd317 MCC	434	/*
	435	* Store the pointer to the au0828_dev so it can be accessed in
	436	* au0828_usb_disconnect
	437	*/
fe78a49c DH	438	usb_set_intfdata(interface, dev);
fe78a49c DH	439
83afb32a	440	pr_info("Registered device AU0828 [%s]\n",
f1add5b5	441	dev->board.name == NULL ? "Unset" : dev->board.name);
265a6510	442
549ee4df DH	443	mutex_unlock(&dev->lock);
549ee4df DH	444
4e26f3ab MCC	445	retval = au0828_create_media_graph(dev);
	446	if (retval) {
	447	pr_err("%s() au0282_dev_register failed to create graph\n",
	448	__func__);
	449	au0828_usb_disconnect(interface);
	450	}
bed69196	451
f251b3e7	452	return retval;
265a6510 ST	453	}
265a6510 ST	454
aaeac199 MCC	455	static int au0828_suspend(struct usb_interface *interface,
	456	pm_message_t message)
	457	{
	458	struct au0828_dev *dev = usb_get_intfdata(interface);
	459
	460	if (!dev)
	461	return 0;
	462
81187240 MCC	463	pr_info("Suspend\n");
81187240 MCC	464
aaeac199	465	au0828_rc_suspend(dev);
1a1ba95e	466	au0828_v4l2_suspend(dev);
b799de75	467	au0828_dvb_suspend(dev);
aaeac199 MCC	468
	469	/* FIXME: should suspend also ATV/DTV */
	470
	471	return 0;
	472	}
	473
	474	static int au0828_resume(struct usb_interface *interface)
	475	{
	476	struct au0828_dev *dev = usb_get_intfdata(interface);
	477	if (!dev)
	478	return 0;
	479
81187240 MCC	480	pr_info("Resume\n");
81187240 MCC	481
fa500461 MCC	482	/* Power Up the bridge */
	483	au0828_write(dev, REG_600, 1 << 4);
	484
	485	/* Bring up the GPIO's and supporting devices */
	486	au0828_gpio_setup(dev);
	487
aaeac199	488	au0828_rc_resume(dev);
1a1ba95e	489	au0828_v4l2_resume(dev);
b799de75	490	au0828_dvb_resume(dev);
aaeac199 MCC	491
	492	/* FIXME: should resume also ATV/DTV */
	493
	494	return 0;
	495	}
	496
265a6510	497	static struct usb_driver au0828_usb_driver = {
83afb32a	498	.name = KBUILD_MODNAME,
265a6510 ST	499	.probe = au0828_usb_probe,
	500	.disconnect = au0828_usb_disconnect,
	501	.id_table = au0828_usb_id_table,
aaeac199 MCC	502	.suspend = au0828_suspend,
	503	.resume = au0828_resume,
	504	.reset_resume = au0828_resume,
265a6510 ST	505	};
	506
	507	static int __init au0828_init(void)
	508	{
	509	int ret;
	510
b33d24c4	511	if (au0828_debug & 1)
83afb32a	512	pr_info("%s() Debugging is enabled\n", __func__);
bc3c613c	513
b33d24c4	514	if (au0828_debug & 2)
83afb32a	515	pr_info("%s() USB Debugging is enabled\n", __func__);
bc3c613c	516
b33d24c4	517	if (au0828_debug & 4)
83afb32a	518	pr_info("%s() I2C Debugging is enabled\n", __func__);
bc3c613c	519
b33d24c4	520	if (au0828_debug & 8)
83afb32a	521	pr_info("%s() Bridge Debugging is enabled\n",
f07e8e4b	522	__func__);
bc3c613c	523
2fcfd317	524	if (au0828_debug & 16)
83afb32a	525	pr_info("%s() IR Debugging is enabled\n",
2fcfd317 MCC	526	__func__);
2fcfd317 MCC	527
83afb32a	528	pr_info("au0828 driver loaded\n");
265a6510 ST	529
	530	ret = usb_register(&au0828_usb_driver);
	531	if (ret)
83afb32a	532	pr_err("usb_register failed, error = %d\n", ret);
265a6510 ST	533
	534	return ret;
	535	}
	536
	537	static void __exit au0828_exit(void)
	538	{
	539	usb_deregister(&au0828_usb_driver);
	540	}
	541
	542	module_init(au0828_init);
	543	module_exit(au0828_exit);
	544
	545	MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products");
6d897616	546	MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>");
265a6510	547	MODULE_LICENSE("GPL");
2fcfd317	548	MODULE_VERSION("0.0.3");