V4L/DVB (7621): Add support for Hauppauge HVR950Q/HVR850/FusioHDTV7-USB

Including support for the AU0828 USB Bridge.
Including support for the AU8522 ATSC/QAM Demodulator.
Including support for the AU8522 ATSC/QAM Demodulator.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 252 insertions, 0 deletions

diff --git a/drivers/media/video/au0828/au0828-core.c b/drivers/media/video/au0828/au0828-core.c
new file mode 100644
index 00000000000..8d0b8a8b06b
--- /dev/null
+++ b/drivers/media/video/au0828/au0828-core.c
@@ -0,0 +1,252 @@
+/*
+ *  Driver for the Auvitek USB bridge
+ *
+ *  Copyright (c) 2008 Steven Toth <stoth@hauppauge.com>
+ *
+ *  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 <linux/module.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <linux/mutex.h>
+
+#include "au0828.h"
+
+static unsigned int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "enable debug messages");
+
+#define _err(fmt, arg...)\
+        do {\
+                printk(KERN_ERR DRIVER_NAME "/0: " fmt, ## arg);\
+        } while (0)
+
+#define _info(fmt, arg...)\
+        do {\
+                printk(KERN_INFO DRIVER_NAME "/0: " fmt, ## arg);\
+        } while (0)
+
+#define _dbg(level, fmt, arg...)\
+        do {\
+                if (debug >= level) \
+                        printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\
+        } while (0)
+
+#define _AU0828_BULKPIPE 0x03
+#define _BULKPIPESIZE 0xffff
+
+static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
+        u16 index, unsigned char *cp, u16 size);
+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)
+{
+        recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, dev->ctrlmsg, 1);
+        _dbg(3,"%s(0x%x) = 0x%x\n", __FUNCTION__, reg, dev->ctrlmsg[0]);
+        return dev->ctrlmsg[0];
+}
+
+u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val)
+{
+        _dbg(3,"%s(0x%x, 0x%x)\n", __FUNCTION__, reg, val);
+        return send_control_msg(dev, CMD_REQUEST_OUT, val, reg, dev->ctrlmsg, 0);
+}
+
+static void cmd_msg_dump(struct au0828_dev *dev)
+{
+        int i;
+
+        for (i = 0;i < sizeof(dev->ctrlmsg); i+=16)
+                _dbg(1,"%s() %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x "
+                        "%02x %02x %02x %02x %02x %02x\n",
+                        __FUNCTION__,
+                        dev->ctrlmsg[i+0], dev->ctrlmsg[i+1],
+                        dev->ctrlmsg[i+2], dev->ctrlmsg[i+3],
+                        dev->ctrlmsg[i+4], dev->ctrlmsg[i+5],
+                        dev->ctrlmsg[i+6], dev->ctrlmsg[i+7],
+                        dev->ctrlmsg[i+8], dev->ctrlmsg[i+9],
+                        dev->ctrlmsg[i+10], dev->ctrlmsg[i+11],
+                        dev->ctrlmsg[i+12], dev->ctrlmsg[i+13],
+                        dev->ctrlmsg[i+14], dev->ctrlmsg[i+15]);
+}
+
+static int send_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) {
+
+                /* 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,
+                                cp, size, 1000);
+
+                status = min(status, 0);
+
+                if (status < 0) {
+                        _err("%s() Failed sending control message, error %d.\n",
+                                __FUNCTION__,
+                                status);
+                }
+
+        }
+        mutex_unlock(&dev->mutex);
+        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) {
+
+                memset(dev->ctrlmsg, 0, sizeof(dev->ctrlmsg));
+
+                /* cp must be memory that has been allocated by kmalloc */
+                status = usb_control_msg(dev->usbdev,
+                                usb_rcvctrlpipe(dev->usbdev, 0),
+                                request,
+                                USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                                value, index,
+                                cp, size, 1000);
+
+                status = min(status, 0);
+
+                if (status < 0) {
+                        _err("%s() Failed receiving ctrl msg, error %d.\n",
+                                __FUNCTION__,
+                                status);
+                }
+                else
+                        if (debug > 4)
+                                cmd_msg_dump(dev);
+        }
+        mutex_unlock(&dev->mutex);
+        return status;
+}
+static void au0828_usb_disconnect(struct usb_interface *interface)
+{
+        struct au0828_dev *dev = usb_get_intfdata(interface);
+
+        _dbg(1,"%s()\n", __FUNCTION__);
+
+        /* Digital TV */
+        au0828_dvb_unregister(dev);
+
+        /* I2C */
+        au0828_i2c_unregister(dev);
+
+        usb_set_intfdata(interface, NULL);
+
+        mutex_lock(&dev->mutex);
+        dev->usbdev = NULL;
+        mutex_unlock(&dev->mutex);
+
+        kfree(dev);
+
+}
+
+static int au0828_usb_probe (struct usb_interface *interface,
+        const struct usb_device_id *id)
+{
+        int ifnum;
+        struct au0828_dev *dev;
+        struct usb_device *usbdev = interface_to_usbdev(interface);
+
+        ifnum = interface->altsetting->desc.bInterfaceNumber;
+
+        if (ifnum != 0)
+                return -ENODEV;
+
+        _dbg(1,"%s() vendor id 0x%x device id 0x%x ifnum:%d\n",
+                __FUNCTION__,
+                le16_to_cpu(usbdev->descriptor.idVendor),
+                le16_to_cpu(usbdev->descriptor.idProduct),
+                ifnum);
+
+        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+        if (dev == NULL) {
+                _err("Unable to allocate memory\n");
+                return -ENOMEM;
+        }
+
+        mutex_init(&dev->mutex);
+        mutex_init(&dev->dvb.lock);
+        dev->usbdev = usbdev;
+        dev->board = id->driver_info;
+
+        usb_set_intfdata(interface, dev);
+
+        /* 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);
+
+        /* Digital TV */
+        au0828_dvb_register(dev);
+
+        _info("Registered device AU0828 [%s]\n",
+                au0828_boards[dev->board].name);
+
+        return 0;
+}
+
+static struct usb_driver au0828_usb_driver = {
+        .name           = DRIVER_NAME,
+        .probe          = au0828_usb_probe,
+        .disconnect     = au0828_usb_disconnect,
+        .id_table       = au0828_usb_id_table,
+};
+
+static int __init au0828_init(void)
+{
+        int ret;
+
+        _info("au0828 driver loaded\n");
+
+        ret = usb_register(&au0828_usb_driver);
+        if (ret)
+                _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@hauppauge.com>");
+MODULE_LICENSE("GPL");