[mirror_ubuntu-artful-kernel.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 int 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 -ENOMEM;

	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
	return 0;
}


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_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 */
	retval = au0828_media_device_init(dev, usbdev);
	if (retval) {
		pr_err("%s() au0828_media_device_init failed\n",
		       __func__);
		mutex_unlock(&dev->lock);
		kfree(dev);
		return retval;
	}

#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
9f806795 MCC	220	static int au0828_media_device_init(struct au0828_dev *dev,
9f806795 MCC	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)
9f806795	228	return -ENOMEM;
bed69196 RLLC	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
9f806795	246	return 0;
bed69196 RLLC	247	}
	248
	249
4e26f3ab	250	static int au0828_create_media_graph(struct au0828_dev *dev)
bed69196 RLLC	251	{
	252	#ifdef CONFIG_MEDIA_CONTROLLER
	253	struct media_device *mdev = dev->media_dev;
	254	struct media_entity *entity;
	255	struct media_entity tuner = NULL, decoder = NULL;
4e26f3ab	256	int i, ret;
bed69196 RLLC	257
bed69196 RLLC	258	if (!mdev)
4e26f3ab	259	return 0;
bed69196 RLLC	260
bed69196 RLLC	261	media_device_for_each_entity(entity, mdev) {
0e576b76	262	switch (entity->function) {
4ca72efa	263	case MEDIA_ENT_F_TUNER:
bed69196 RLLC	264	tuner = entity;
bed69196 RLLC	265	break;
4ca72efa	266	case MEDIA_ENT_F_ATV_DECODER:
bed69196 RLLC	267	decoder = entity;
	268	break;
	269	}
	270	}
	271
	272	/* Analog setup, using tuner as a link */
	273
28b6ba11	274	/* Something bad happened! */
bed69196	275	if (!decoder)
4e26f3ab MCC	276	return -EINVAL;
	277
	278	if (tuner) {
163c9bca	279	ret = media_create_pad_link(tuner, TUNER_PAD_OUTPUT,
4e26f3ab MCC	280	decoder, 0,
	281	MEDIA_LNK_FL_ENABLED);
	282	if (ret)
	283	return ret;
	284	}
	285	ret = media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
	286	MEDIA_LNK_FL_ENABLED);
	287	if (ret)
	288	return ret;
	289	ret = media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0,
	290	MEDIA_LNK_FL_ENABLED);
	291	if (ret)
	292	return ret;
28b6ba11 MCC	293
	294	for (i = 0; i < AU0828_MAX_INPUT; i++) {
	295	struct media_entity *ent = &dev->input_ent[i];
	296
	297	if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
	298	break;
	299
	300	switch (AUVI_INPUT(i).type) {
	301	case AU0828_VMUX_CABLE:
	302	case AU0828_VMUX_TELEVISION:
	303	case AU0828_VMUX_DVB:
4e26f3ab MCC	304	if (!tuner)
	305	break;
	306
	307	ret = media_create_pad_link(ent, 0, tuner,
	308	TUNER_PAD_RF_INPUT,
	309	MEDIA_LNK_FL_ENABLED);
	310	if (ret)
	311	return ret;
28b6ba11 MCC	312	break;
	313	case AU0828_VMUX_COMPOSITE:
	314	case AU0828_VMUX_SVIDEO:
	315	default: /* AU0828_VMUX_DEBUG */
	316	/* FIXME: fix the decoder PAD */
4e26f3ab MCC	317	ret = media_create_pad_link(ent, 0, decoder, 0, 0);
	318	if (ret)
	319	return ret;
28b6ba11 MCC	320	break;
	321	}
	322	}
bed69196	323	#endif
4e26f3ab	324	return 0;
bed69196 RLLC	325	}
bed69196 RLLC	326
18d73c58	327	static int au0828_usb_probe(struct usb_interface *interface,
265a6510 ST	328	const struct usb_device_id *id)
265a6510 ST	329	{
8a4e7866	330	int ifnum;
f251b3e7 TM	331	int retval = 0;
f251b3e7 TM	332
265a6510 ST	333	struct au0828_dev *dev;
	334	struct usb_device *usbdev = interface_to_usbdev(interface);
	335
	336	ifnum = interface->altsetting->desc.bInterfaceNumber;
	337
	338	if (ifnum != 0)
	339	return -ENODEV;
	340
a9c36aad	341	dprintk(1, "%s() vendor id 0x%x device id 0x%x ifnum:%d\n", __func__,
265a6510 ST	342	le16_to_cpu(usbdev->descriptor.idVendor),
	343	le16_to_cpu(usbdev->descriptor.idProduct),
	344	ifnum);
	345
ee3436b8 DH	346	/*
	347	* Make sure we have 480 Mbps of bandwidth, otherwise things like
	348	* video stream wouldn't likely work, since 12 Mbps is generally
	349	* not enough even for most Digital TV streams.
	350	*/
d6a9a430	351	if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) {
83afb32a MCC	352	pr_err("au0828: Device initialization failed.\n");
83afb32a MCC	353	pr_err("au0828: Device must be connected to a high-speed USB 2.0 port.\n");
ee3436b8 DH	354	return -ENODEV;
	355	}
	356
265a6510 ST	357	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
265a6510 ST	358	if (dev == NULL) {
83afb32a	359	pr_err("%s() Unable to allocate memory\n", __func__);
265a6510 ST	360	return -ENOMEM;
	361	}
	362
549ee4df DH	363	mutex_init(&dev->lock);
549ee4df DH	364	mutex_lock(&dev->lock);
265a6510 ST	365	mutex_init(&dev->mutex);
	366	mutex_init(&dev->dvb.lock);
	367	dev->usbdev = usbdev;
f1add5b5	368	dev->boardnr = id->driver_info;
e42c8c6e RLLC	369	dev->board = au0828_boards[dev->boardnr];
e42c8c6e RLLC	370
9832e155	371	/* Initialize the media controller */
9f806795 MCC	372	retval = au0828_media_device_init(dev, usbdev);
	373	if (retval) {
	374	pr_err("%s() au0828_media_device_init failed\n",
	375	__func__);
	376	mutex_unlock(&dev->lock);
	377	kfree(dev);
	378	return retval;
	379	}
265a6510	380
8a4e7866	381	#ifdef CONFIG_VIDEO_AU0828_V4L2
823beb7e HV	382	dev->v4l2_dev.release = au0828_usb_v4l2_release;
823beb7e HV	383
b14667f3	384	/* Create the v4l2_device */
bed69196 RLLC	385	#ifdef CONFIG_MEDIA_CONTROLLER
	386	dev->v4l2_dev.mdev = dev->media_dev;
	387	#endif
a4124aa9	388	retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
b14667f3	389	if (retval) {
e8c26f45	390	pr_err("%s() v4l2_device_register failed\n",
b14667f3	391	__func__);
549ee4df	392	mutex_unlock(&dev->lock);
b14667f3	393	kfree(dev);
e8c26f45	394	return retval;
b14667f3	395	}
e8c26f45 HV	396	/* This control handler will inherit the controls from au8522 */
	397	retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
	398	if (retval) {
	399	pr_err("%s() v4l2_ctrl_handler_init failed\n",
	400	__func__);
	401	mutex_unlock(&dev->lock);
	402	kfree(dev);
	403	return retval;
	404	}
	405	dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
8a4e7866	406	#endif
b14667f3	407
265a6510 ST	408	/* Power Up the bridge */
	409	au0828_write(dev, REG_600, 1 << 4);
	410
	411	/* Bring up the GPIO's and supporting devices */
	412	au0828_gpio_setup(dev);
	413
	414	/* I2C */
	415	au0828_i2c_register(dev);
	416
28930fa9 ST	417	/* Setup */
	418	au0828_card_setup(dev);
	419
8a4e7866	420	#ifdef CONFIG_VIDEO_AU0828_V4L2
8b2f0795	421	/* Analog TV */
220be77c	422	if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED)
fc4ce6cd	423	au0828_analog_register(dev, interface);
8a4e7866	424	#endif
8b2f0795	425
265a6510	426	/* Digital TV */
f251b3e7 TM	427	retval = au0828_dvb_register(dev);
	428	if (retval)
	429	pr_err("%s() au0282_dev_register failed\n",
	430	__func__);
	431
2fcfd317 MCC	432	/* Remote controller */
2fcfd317 MCC	433	au0828_rc_register(dev);
265a6510	434
2fcfd317 MCC	435	/*
	436	* Store the pointer to the au0828_dev so it can be accessed in
	437	* au0828_usb_disconnect
	438	*/
fe78a49c DH	439	usb_set_intfdata(interface, dev);
fe78a49c DH	440
83afb32a	441	pr_info("Registered device AU0828 [%s]\n",
f1add5b5	442	dev->board.name == NULL ? "Unset" : dev->board.name);
265a6510	443
549ee4df DH	444	mutex_unlock(&dev->lock);
549ee4df DH	445
4e26f3ab MCC	446	retval = au0828_create_media_graph(dev);
	447	if (retval) {
	448	pr_err("%s() au0282_dev_register failed to create graph\n",
	449	__func__);
9832e155	450	goto done;
4e26f3ab	451	}
bed69196	452
9832e155 JMC	453	#ifdef CONFIG_MEDIA_CONTROLLER
	454	retval = media_device_register(dev->media_dev);
	455	#endif
	456
	457	done:
	458	if (retval < 0)
	459	au0828_usb_disconnect(interface);
	460
f251b3e7	461	return retval;
265a6510 ST	462	}
265a6510 ST	463
aaeac199 MCC	464	static int au0828_suspend(struct usb_interface *interface,
	465	pm_message_t message)
	466	{
	467	struct au0828_dev *dev = usb_get_intfdata(interface);
	468
	469	if (!dev)
	470	return 0;
	471
81187240 MCC	472	pr_info("Suspend\n");
81187240 MCC	473
aaeac199	474	au0828_rc_suspend(dev);
1a1ba95e	475	au0828_v4l2_suspend(dev);
b799de75	476	au0828_dvb_suspend(dev);
aaeac199 MCC	477
	478	/* FIXME: should suspend also ATV/DTV */
	479
	480	return 0;
	481	}
	482
	483	static int au0828_resume(struct usb_interface *interface)
	484	{
	485	struct au0828_dev *dev = usb_get_intfdata(interface);
	486	if (!dev)
	487	return 0;
	488
81187240 MCC	489	pr_info("Resume\n");
81187240 MCC	490
fa500461 MCC	491	/* Power Up the bridge */
	492	au0828_write(dev, REG_600, 1 << 4);
	493
	494	/* Bring up the GPIO's and supporting devices */
	495	au0828_gpio_setup(dev);
	496
aaeac199	497	au0828_rc_resume(dev);
1a1ba95e	498	au0828_v4l2_resume(dev);
b799de75	499	au0828_dvb_resume(dev);
aaeac199 MCC	500
	501	/* FIXME: should resume also ATV/DTV */
	502
	503	return 0;
	504	}
	505
265a6510	506	static struct usb_driver au0828_usb_driver = {
83afb32a	507	.name = KBUILD_MODNAME,
265a6510 ST	508	.probe = au0828_usb_probe,
	509	.disconnect = au0828_usb_disconnect,
	510	.id_table = au0828_usb_id_table,
aaeac199 MCC	511	.suspend = au0828_suspend,
	512	.resume = au0828_resume,
	513	.reset_resume = au0828_resume,
265a6510 ST	514	};
	515
	516	static int __init au0828_init(void)
	517	{
	518	int ret;
	519
b33d24c4	520	if (au0828_debug & 1)
83afb32a	521	pr_info("%s() Debugging is enabled\n", __func__);
bc3c613c	522
b33d24c4	523	if (au0828_debug & 2)
83afb32a	524	pr_info("%s() USB Debugging is enabled\n", __func__);
bc3c613c	525
b33d24c4	526	if (au0828_debug & 4)
83afb32a	527	pr_info("%s() I2C Debugging is enabled\n", __func__);
bc3c613c	528
b33d24c4	529	if (au0828_debug & 8)
83afb32a	530	pr_info("%s() Bridge Debugging is enabled\n",
f07e8e4b	531	__func__);
bc3c613c	532
2fcfd317	533	if (au0828_debug & 16)
83afb32a	534	pr_info("%s() IR Debugging is enabled\n",
2fcfd317 MCC	535	__func__);
2fcfd317 MCC	536
83afb32a	537	pr_info("au0828 driver loaded\n");
265a6510 ST	538
	539	ret = usb_register(&au0828_usb_driver);
	540	if (ret)
83afb32a	541	pr_err("usb_register failed, error = %d\n", ret);
265a6510 ST	542
	543	return ret;
	544	}
	545
	546	static void __exit au0828_exit(void)
	547	{
	548	usb_deregister(&au0828_usb_driver);
	549	}
	550
	551	module_init(au0828_init);
	552	module_exit(au0828_exit);
	553
	554	MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products");
6d897616	555	MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>");
265a6510	556	MODULE_LICENSE("GPL");
2fcfd317	557	MODULE_VERSION("0.0.3");