[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);
		media_device_cleanup(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_init(struct au0828_dev *dev,
				     struct usb_device *udev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
	struct media_device *mdev;

	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;

	media_device_init(mdev);

	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];

	/* Initialize the media controller */
	au0828_media_device_init(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__);
		goto done;
	}

#ifdef CONFIG_MEDIA_CONTROLLER
	retval = media_device_register(dev->media_dev);
#endif

done:
	if (retval < 0)
		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);
9832e155	139	media_device_cleanup(dev->media_dev);
bed69196 RLLC	140	kfree(dev->media_dev);
	141	dev->media_dev = NULL;
	142	}
	143	#endif
	144	}
	145
823beb7e	146	static void au0828_usb_release(struct au0828_dev *dev)
265a6510	147	{
bed69196 RLLC	148	au0828_unregister_media_device(dev);
bed69196 RLLC	149
265a6510 ST	150	/* I2C */
	151	au0828_i2c_unregister(dev);
	152
823beb7e HV	153	kfree(dev);
	154	}
	155
8a4e7866	156	#ifdef CONFIG_VIDEO_AU0828_V4L2
d1f33737 MCC	157
	158	static void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
	159	{
	160	#ifdef CONFIG_MEDIA_CONTROLLER
	161	int i;
	162
	163	for (i = 0; i < AU0828_MAX_INPUT; i++) {
	164	if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
	165	return;
	166	media_device_unregister_entity(&dev->input_ent[i]);
	167	}
	168	#endif
	169	}
	170
823beb7e HV	171	static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
	172	{
	173	struct au0828_dev *dev =
	174	container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
	175
e8c26f45	176	v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
b14667f3	177	v4l2_device_unregister(&dev->v4l2_dev);
4e26f3ab	178	au0828_usb_v4l2_media_release(dev);
823beb7e HV	179	au0828_usb_release(dev);
823beb7e HV	180	}
8a4e7866	181	#endif
b14667f3	182
823beb7e HV	183	static void au0828_usb_disconnect(struct usb_interface *interface)
	184	{
	185	struct au0828_dev *dev = usb_get_intfdata(interface);
	186
	187	dprintk(1, "%s()\n", __func__);
	188
eb336eab SK	189	/* there is a small window after disconnect, before
	190	dev->usbdev is NULL, for poll (e.g: IR) try to access
	191	the device and fill the dmesg with error messages.
	192	Set the status so poll routines can check and avoid
	193	access after disconnect.
	194	*/
	195	dev->dev_state = DEV_DISCONNECTED;
	196
2fcfd317	197	au0828_rc_unregister(dev);
823beb7e HV	198	/* Digital TV */
823beb7e HV	199	au0828_dvb_unregister(dev);
265a6510	200
823beb7e	201	usb_set_intfdata(interface, NULL);
265a6510 ST	202	mutex_lock(&dev->mutex);
	203	dev->usbdev = NULL;
	204	mutex_unlock(&dev->mutex);
823beb7e HV	205	#ifdef CONFIG_VIDEO_AU0828_V4L2
	206	if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED) {
	207	au0828_analog_unregister(dev);
	208	v4l2_device_disconnect(&dev->v4l2_dev);
	209	v4l2_device_put(&dev->v4l2_dev);
7e9a8ad5 MCC	210	/*
	211	* No need to call au0828_usb_release() if V4L2 is enabled,
	212	* as this is already called via au0828_usb_v4l2_release()
	213	*/
823beb7e HV	214	return;
	215	}
	216	#endif
	217	au0828_usb_release(dev);
265a6510 ST	218	}
265a6510 ST	219
9832e155 JMC	220	static void au0828_media_device_init(struct au0828_dev *dev,
9832e155 JMC	221	struct usb_device *udev)
bed69196 RLLC	222	{
	223	#ifdef CONFIG_MEDIA_CONTROLLER
	224	struct media_device *mdev;
bed69196 RLLC	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
9832e155	242	media_device_init(mdev);
bed69196 RLLC	243
	244	dev->media_dev = mdev;
	245	#endif
	246	}
	247
	248
4e26f3ab	249	static int au0828_create_media_graph(struct au0828_dev *dev)
bed69196 RLLC	250	{
	251	#ifdef CONFIG_MEDIA_CONTROLLER
	252	struct media_device *mdev = dev->media_dev;
	253	struct media_entity *entity;
	254	struct media_entity tuner = NULL, decoder = NULL;
4e26f3ab	255	int i, ret;
bed69196 RLLC	256
bed69196 RLLC	257	if (!mdev)
4e26f3ab	258	return 0;
bed69196 RLLC	259
bed69196 RLLC	260	media_device_for_each_entity(entity, mdev) {
0e576b76	261	switch (entity->function) {
4ca72efa	262	case MEDIA_ENT_F_TUNER:
bed69196 RLLC	263	tuner = entity;
bed69196 RLLC	264	break;
4ca72efa	265	case MEDIA_ENT_F_ATV_DECODER:
bed69196 RLLC	266	decoder = entity;
	267	break;
	268	}
	269	}
	270
	271	/* Analog setup, using tuner as a link */
	272
28b6ba11	273	/* Something bad happened! */
bed69196	274	if (!decoder)
4e26f3ab MCC	275	return -EINVAL;
	276
	277	if (tuner) {
	278	ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT,
	279	decoder, 0,
	280	MEDIA_LNK_FL_ENABLED);
	281	if (ret)
	282	return ret;
	283	}
	284	ret = media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
	285	MEDIA_LNK_FL_ENABLED);
	286	if (ret)
	287	return ret;
	288	ret = media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0,
	289	MEDIA_LNK_FL_ENABLED);
	290	if (ret)
	291	return ret;
28b6ba11 MCC	292
	293	for (i = 0; i < AU0828_MAX_INPUT; i++) {
	294	struct media_entity *ent = &dev->input_ent[i];
	295
	296	if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
	297	break;
	298
	299	switch (AUVI_INPUT(i).type) {
	300	case AU0828_VMUX_CABLE:
	301	case AU0828_VMUX_TELEVISION:
	302	case AU0828_VMUX_DVB:
4e26f3ab MCC	303	if (!tuner)
	304	break;
	305
	306	ret = media_create_pad_link(ent, 0, tuner,
	307	TUNER_PAD_RF_INPUT,
	308	MEDIA_LNK_FL_ENABLED);
	309	if (ret)
	310	return ret;
28b6ba11 MCC	311	break;
	312	case AU0828_VMUX_COMPOSITE:
	313	case AU0828_VMUX_SVIDEO:
	314	default: /* AU0828_VMUX_DEBUG */
	315	/* FIXME: fix the decoder PAD */
4e26f3ab MCC	316	ret = media_create_pad_link(ent, 0, decoder, 0, 0);
	317	if (ret)
	318	return ret;
28b6ba11 MCC	319	break;
	320	}
	321	}
bed69196	322	#endif
4e26f3ab	323	return 0;
bed69196 RLLC	324	}
bed69196 RLLC	325
18d73c58	326	static int au0828_usb_probe(struct usb_interface *interface,
265a6510 ST	327	const struct usb_device_id *id)
265a6510 ST	328	{
8a4e7866	329	int ifnum;
f251b3e7 TM	330	int retval = 0;
f251b3e7 TM	331
265a6510 ST	332	struct au0828_dev *dev;
	333	struct usb_device *usbdev = interface_to_usbdev(interface);
	334
	335	ifnum = interface->altsetting->desc.bInterfaceNumber;
	336
	337	if (ifnum != 0)
	338	return -ENODEV;
	339
a9c36aad	340	dprintk(1, "%s() vendor id 0x%x device id 0x%x ifnum:%d\n", __func__,
265a6510 ST	341	le16_to_cpu(usbdev->descriptor.idVendor),
	342	le16_to_cpu(usbdev->descriptor.idProduct),
	343	ifnum);
	344
ee3436b8 DH	345	/*
	346	* Make sure we have 480 Mbps of bandwidth, otherwise things like
	347	* video stream wouldn't likely work, since 12 Mbps is generally
	348	* not enough even for most Digital TV streams.
	349	*/
d6a9a430	350	if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) {
83afb32a MCC	351	pr_err("au0828: Device initialization failed.\n");
83afb32a MCC	352	pr_err("au0828: Device must be connected to a high-speed USB 2.0 port.\n");
ee3436b8 DH	353	return -ENODEV;
	354	}
	355
265a6510 ST	356	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
265a6510 ST	357	if (dev == NULL) {
83afb32a	358	pr_err("%s() Unable to allocate memory\n", __func__);
265a6510 ST	359	return -ENOMEM;
	360	}
	361
549ee4df DH	362	mutex_init(&dev->lock);
549ee4df DH	363	mutex_lock(&dev->lock);
265a6510 ST	364	mutex_init(&dev->mutex);
	365	mutex_init(&dev->dvb.lock);
	366	dev->usbdev = usbdev;
f1add5b5	367	dev->boardnr = id->driver_info;
e42c8c6e RLLC	368	dev->board = au0828_boards[dev->boardnr];
e42c8c6e RLLC	369
9832e155 JMC	370	/* Initialize the media controller */
9832e155 JMC	371	au0828_media_device_init(dev, usbdev);
265a6510	372
8a4e7866	373	#ifdef CONFIG_VIDEO_AU0828_V4L2
823beb7e HV	374	dev->v4l2_dev.release = au0828_usb_v4l2_release;
823beb7e HV	375
b14667f3	376	/* Create the v4l2_device */
bed69196 RLLC	377	#ifdef CONFIG_MEDIA_CONTROLLER
	378	dev->v4l2_dev.mdev = dev->media_dev;
	379	#endif
a4124aa9	380	retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
b14667f3	381	if (retval) {
e8c26f45	382	pr_err("%s() v4l2_device_register failed\n",
b14667f3	383	__func__);
549ee4df	384	mutex_unlock(&dev->lock);
b14667f3	385	kfree(dev);
e8c26f45	386	return retval;
b14667f3	387	}
e8c26f45 HV	388	/* This control handler will inherit the controls from au8522 */
	389	retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
	390	if (retval) {
	391	pr_err("%s() v4l2_ctrl_handler_init failed\n",
	392	__func__);
	393	mutex_unlock(&dev->lock);
	394	kfree(dev);
	395	return retval;
	396	}
	397	dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
8a4e7866	398	#endif
b14667f3	399
265a6510 ST	400	/* Power Up the bridge */
	401	au0828_write(dev, REG_600, 1 << 4);
	402
	403	/* Bring up the GPIO's and supporting devices */
	404	au0828_gpio_setup(dev);
	405
	406	/* I2C */
	407	au0828_i2c_register(dev);
	408
28930fa9 ST	409	/* Setup */
	410	au0828_card_setup(dev);
	411
8a4e7866	412	#ifdef CONFIG_VIDEO_AU0828_V4L2
8b2f0795	413	/* Analog TV */
220be77c	414	if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED)
fc4ce6cd	415	au0828_analog_register(dev, interface);
8a4e7866	416	#endif
8b2f0795	417
265a6510	418	/* Digital TV */
f251b3e7 TM	419	retval = au0828_dvb_register(dev);
	420	if (retval)
	421	pr_err("%s() au0282_dev_register failed\n",
	422	__func__);
	423
2fcfd317 MCC	424	/* Remote controller */
2fcfd317 MCC	425	au0828_rc_register(dev);
265a6510	426
2fcfd317 MCC	427	/*
	428	* Store the pointer to the au0828_dev so it can be accessed in
	429	* au0828_usb_disconnect
	430	*/
fe78a49c DH	431	usb_set_intfdata(interface, dev);
fe78a49c DH	432
83afb32a	433	pr_info("Registered device AU0828 [%s]\n",
f1add5b5	434	dev->board.name == NULL ? "Unset" : dev->board.name);
265a6510	435
549ee4df DH	436	mutex_unlock(&dev->lock);
549ee4df DH	437
4e26f3ab MCC	438	retval = au0828_create_media_graph(dev);
	439	if (retval) {
	440	pr_err("%s() au0282_dev_register failed to create graph\n",
	441	__func__);
9832e155	442	goto done;
4e26f3ab	443	}
bed69196	444
9832e155 JMC	445	#ifdef CONFIG_MEDIA_CONTROLLER
	446	retval = media_device_register(dev->media_dev);
	447	#endif
	448
	449	done:
	450	if (retval < 0)
	451	au0828_usb_disconnect(interface);
	452
f251b3e7	453	return retval;
265a6510 ST	454	}
265a6510 ST	455
aaeac199 MCC	456	static int au0828_suspend(struct usb_interface *interface,
	457	pm_message_t message)
	458	{
	459	struct au0828_dev *dev = usb_get_intfdata(interface);
	460
	461	if (!dev)
	462	return 0;
	463
81187240 MCC	464	pr_info("Suspend\n");
81187240 MCC	465
aaeac199	466	au0828_rc_suspend(dev);
1a1ba95e	467	au0828_v4l2_suspend(dev);
b799de75	468	au0828_dvb_suspend(dev);
aaeac199 MCC	469
	470	/* FIXME: should suspend also ATV/DTV */
	471
	472	return 0;
	473	}
	474
	475	static int au0828_resume(struct usb_interface *interface)
	476	{
	477	struct au0828_dev *dev = usb_get_intfdata(interface);
	478	if (!dev)
	479	return 0;
	480
81187240 MCC	481	pr_info("Resume\n");
81187240 MCC	482
fa500461 MCC	483	/* Power Up the bridge */
	484	au0828_write(dev, REG_600, 1 << 4);
	485
	486	/* Bring up the GPIO's and supporting devices */
	487	au0828_gpio_setup(dev);
	488
aaeac199	489	au0828_rc_resume(dev);
1a1ba95e	490	au0828_v4l2_resume(dev);
b799de75	491	au0828_dvb_resume(dev);
aaeac199 MCC	492
	493	/* FIXME: should resume also ATV/DTV */
	494
	495	return 0;
	496	}
	497
265a6510	498	static struct usb_driver au0828_usb_driver = {
83afb32a	499	.name = KBUILD_MODNAME,
265a6510 ST	500	.probe = au0828_usb_probe,
	501	.disconnect = au0828_usb_disconnect,
	502	.id_table = au0828_usb_id_table,
aaeac199 MCC	503	.suspend = au0828_suspend,
	504	.resume = au0828_resume,
	505	.reset_resume = au0828_resume,
265a6510 ST	506	};
	507
	508	static int __init au0828_init(void)
	509	{
	510	int ret;
	511
b33d24c4	512	if (au0828_debug & 1)
83afb32a	513	pr_info("%s() Debugging is enabled\n", __func__);
bc3c613c	514
b33d24c4	515	if (au0828_debug & 2)
83afb32a	516	pr_info("%s() USB Debugging is enabled\n", __func__);
bc3c613c	517
b33d24c4	518	if (au0828_debug & 4)
83afb32a	519	pr_info("%s() I2C Debugging is enabled\n", __func__);
bc3c613c	520
b33d24c4	521	if (au0828_debug & 8)
83afb32a	522	pr_info("%s() Bridge Debugging is enabled\n",
f07e8e4b	523	__func__);
bc3c613c	524
2fcfd317	525	if (au0828_debug & 16)
83afb32a	526	pr_info("%s() IR Debugging is enabled\n",
2fcfd317 MCC	527	__func__);
2fcfd317 MCC	528
83afb32a	529	pr_info("au0828 driver loaded\n");
265a6510 ST	530
	531	ret = usb_register(&au0828_usb_driver);
	532	if (ret)
83afb32a	533	pr_err("usb_register failed, error = %d\n", ret);
265a6510 ST	534
	535	return ret;
	536	}
	537
	538	static void __exit au0828_exit(void)
	539	{
	540	usb_deregister(&au0828_usb_driver);
	541	}
	542
	543	module_init(au0828_init);
	544	module_exit(au0828_exit);
	545
	546	MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products");
6d897616	547	MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>");
265a6510	548	MODULE_LICENSE("GPL");
2fcfd317	549	MODULE_VERSION("0.0.3");