10c0d06caSMauro Carvalho Chehab /* 20c0d06caSMauro Carvalho Chehab * Driver for the Auvitek USB bridge 30c0d06caSMauro Carvalho Chehab * 40c0d06caSMauro Carvalho Chehab * Copyright (c) 2008 Steven Toth <stoth@linuxtv.org> 50c0d06caSMauro Carvalho Chehab * 60c0d06caSMauro Carvalho Chehab * This program is free software; you can redistribute it and/or modify 70c0d06caSMauro Carvalho Chehab * it under the terms of the GNU General Public License as published by 80c0d06caSMauro Carvalho Chehab * the Free Software Foundation; either version 2 of the License, or 90c0d06caSMauro Carvalho Chehab * (at your option) any later version. 100c0d06caSMauro Carvalho Chehab * 110c0d06caSMauro Carvalho Chehab * This program is distributed in the hope that it will be useful, 120c0d06caSMauro Carvalho Chehab * but WITHOUT ANY WARRANTY; without even the implied warranty of 130c0d06caSMauro Carvalho Chehab * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 140c0d06caSMauro Carvalho Chehab * 150c0d06caSMauro Carvalho Chehab * GNU General Public License for more details. 160c0d06caSMauro Carvalho Chehab * 170c0d06caSMauro Carvalho Chehab * You should have received a copy of the GNU General Public License 180c0d06caSMauro Carvalho Chehab * along with this program; if not, write to the Free Software 190c0d06caSMauro Carvalho Chehab * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 200c0d06caSMauro Carvalho Chehab */ 210c0d06caSMauro Carvalho Chehab 220c0d06caSMauro Carvalho Chehab #include <linux/module.h> 230c0d06caSMauro Carvalho Chehab #include <linux/slab.h> 240c0d06caSMauro Carvalho Chehab #include <linux/videodev2.h> 250c0d06caSMauro Carvalho Chehab #include <media/v4l2-common.h> 260c0d06caSMauro Carvalho Chehab #include <linux/mutex.h> 270c0d06caSMauro Carvalho Chehab 280c0d06caSMauro Carvalho Chehab #include "au0828.h" 290c0d06caSMauro Carvalho Chehab 300c0d06caSMauro Carvalho Chehab /* 310c0d06caSMauro Carvalho Chehab * 1 = General debug messages 320c0d06caSMauro Carvalho Chehab * 2 = USB handling 330c0d06caSMauro Carvalho Chehab * 4 = I2C related 340c0d06caSMauro Carvalho Chehab * 8 = Bridge related 350c0d06caSMauro Carvalho Chehab */ 360c0d06caSMauro Carvalho Chehab int au0828_debug; 370c0d06caSMauro Carvalho Chehab module_param_named(debug, au0828_debug, int, 0644); 380c0d06caSMauro Carvalho Chehab MODULE_PARM_DESC(debug, "enable debug messages"); 390c0d06caSMauro Carvalho Chehab 400c0d06caSMauro Carvalho Chehab static unsigned int disable_usb_speed_check; 410c0d06caSMauro Carvalho Chehab module_param(disable_usb_speed_check, int, 0444); 420c0d06caSMauro Carvalho Chehab MODULE_PARM_DESC(disable_usb_speed_check, 430c0d06caSMauro Carvalho Chehab "override min bandwidth requirement of 480M bps"); 440c0d06caSMauro Carvalho Chehab 450c0d06caSMauro Carvalho Chehab #define _AU0828_BULKPIPE 0x03 460c0d06caSMauro Carvalho Chehab #define _BULKPIPESIZE 0xffff 470c0d06caSMauro Carvalho Chehab 480c0d06caSMauro Carvalho Chehab static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value, 490c0d06caSMauro Carvalho Chehab u16 index); 500c0d06caSMauro Carvalho Chehab static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value, 510c0d06caSMauro Carvalho Chehab u16 index, unsigned char *cp, u16 size); 520c0d06caSMauro Carvalho Chehab 530c0d06caSMauro Carvalho Chehab /* USB Direction */ 540c0d06caSMauro Carvalho Chehab #define CMD_REQUEST_IN 0x00 550c0d06caSMauro Carvalho Chehab #define CMD_REQUEST_OUT 0x01 560c0d06caSMauro Carvalho Chehab 570c0d06caSMauro Carvalho Chehab u32 au0828_readreg(struct au0828_dev *dev, u16 reg) 580c0d06caSMauro Carvalho Chehab { 590c0d06caSMauro Carvalho Chehab u8 result = 0; 600c0d06caSMauro Carvalho Chehab 610c0d06caSMauro Carvalho Chehab recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, &result, 1); 620c0d06caSMauro Carvalho Chehab dprintk(8, "%s(0x%04x) = 0x%02x\n", __func__, reg, result); 630c0d06caSMauro Carvalho Chehab 640c0d06caSMauro Carvalho Chehab return result; 650c0d06caSMauro Carvalho Chehab } 660c0d06caSMauro Carvalho Chehab 670c0d06caSMauro Carvalho Chehab u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val) 680c0d06caSMauro Carvalho Chehab { 690c0d06caSMauro Carvalho Chehab dprintk(8, "%s(0x%04x, 0x%02x)\n", __func__, reg, val); 700c0d06caSMauro Carvalho Chehab return send_control_msg(dev, CMD_REQUEST_OUT, val, reg); 710c0d06caSMauro Carvalho Chehab } 720c0d06caSMauro Carvalho Chehab 730c0d06caSMauro Carvalho Chehab static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value, 740c0d06caSMauro Carvalho Chehab u16 index) 750c0d06caSMauro Carvalho Chehab { 760c0d06caSMauro Carvalho Chehab int status = -ENODEV; 770c0d06caSMauro Carvalho Chehab 780c0d06caSMauro Carvalho Chehab if (dev->usbdev) { 790c0d06caSMauro Carvalho Chehab 800c0d06caSMauro Carvalho Chehab /* cp must be memory that has been allocated by kmalloc */ 810c0d06caSMauro Carvalho Chehab status = usb_control_msg(dev->usbdev, 820c0d06caSMauro Carvalho Chehab usb_sndctrlpipe(dev->usbdev, 0), 830c0d06caSMauro Carvalho Chehab request, 840c0d06caSMauro Carvalho Chehab USB_DIR_OUT | USB_TYPE_VENDOR | 850c0d06caSMauro Carvalho Chehab USB_RECIP_DEVICE, 860c0d06caSMauro Carvalho Chehab value, index, NULL, 0, 1000); 870c0d06caSMauro Carvalho Chehab 880c0d06caSMauro Carvalho Chehab status = min(status, 0); 890c0d06caSMauro Carvalho Chehab 900c0d06caSMauro Carvalho Chehab if (status < 0) { 910c0d06caSMauro Carvalho Chehab printk(KERN_ERR "%s() Failed sending control message, error %d.\n", 920c0d06caSMauro Carvalho Chehab __func__, status); 930c0d06caSMauro Carvalho Chehab } 940c0d06caSMauro Carvalho Chehab 950c0d06caSMauro Carvalho Chehab } 960c0d06caSMauro Carvalho Chehab 970c0d06caSMauro Carvalho Chehab return status; 980c0d06caSMauro Carvalho Chehab } 990c0d06caSMauro Carvalho Chehab 1000c0d06caSMauro Carvalho Chehab static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value, 1010c0d06caSMauro Carvalho Chehab u16 index, unsigned char *cp, u16 size) 1020c0d06caSMauro Carvalho Chehab { 1030c0d06caSMauro Carvalho Chehab int status = -ENODEV; 1040c0d06caSMauro Carvalho Chehab mutex_lock(&dev->mutex); 1050c0d06caSMauro Carvalho Chehab if (dev->usbdev) { 1060c0d06caSMauro Carvalho Chehab status = usb_control_msg(dev->usbdev, 1070c0d06caSMauro Carvalho Chehab usb_rcvctrlpipe(dev->usbdev, 0), 1080c0d06caSMauro Carvalho Chehab request, 1090c0d06caSMauro Carvalho Chehab USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 1100c0d06caSMauro Carvalho Chehab value, index, 1110c0d06caSMauro Carvalho Chehab dev->ctrlmsg, size, 1000); 1120c0d06caSMauro Carvalho Chehab 1130c0d06caSMauro Carvalho Chehab status = min(status, 0); 1140c0d06caSMauro Carvalho Chehab 1150c0d06caSMauro Carvalho Chehab if (status < 0) { 1160c0d06caSMauro Carvalho Chehab printk(KERN_ERR "%s() Failed receiving control message, error %d.\n", 1170c0d06caSMauro Carvalho Chehab __func__, status); 1180c0d06caSMauro Carvalho Chehab } 1190c0d06caSMauro Carvalho Chehab 1200c0d06caSMauro Carvalho Chehab /* the host controller requires heap allocated memory, which 1210c0d06caSMauro Carvalho Chehab is why we didn't just pass "cp" into usb_control_msg */ 1220c0d06caSMauro Carvalho Chehab memcpy(cp, dev->ctrlmsg, size); 1230c0d06caSMauro Carvalho Chehab } 1240c0d06caSMauro Carvalho Chehab mutex_unlock(&dev->mutex); 1250c0d06caSMauro Carvalho Chehab return status; 1260c0d06caSMauro Carvalho Chehab } 1270c0d06caSMauro Carvalho Chehab 1280c0d06caSMauro Carvalho Chehab static void au0828_usb_disconnect(struct usb_interface *interface) 1290c0d06caSMauro Carvalho Chehab { 1300c0d06caSMauro Carvalho Chehab struct au0828_dev *dev = usb_get_intfdata(interface); 1310c0d06caSMauro Carvalho Chehab 1320c0d06caSMauro Carvalho Chehab dprintk(1, "%s()\n", __func__); 1330c0d06caSMauro Carvalho Chehab 1340c0d06caSMauro Carvalho Chehab /* Digital TV */ 1350c0d06caSMauro Carvalho Chehab au0828_dvb_unregister(dev); 1360c0d06caSMauro Carvalho Chehab 1378a4e7866SMichael Krufky #ifdef CONFIG_VIDEO_AU0828_V4L2 1380c0d06caSMauro Carvalho Chehab if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED) 1390c0d06caSMauro Carvalho Chehab au0828_analog_unregister(dev); 1408a4e7866SMichael Krufky #endif 1410c0d06caSMauro Carvalho Chehab 1420c0d06caSMauro Carvalho Chehab /* I2C */ 1430c0d06caSMauro Carvalho Chehab au0828_i2c_unregister(dev); 1440c0d06caSMauro Carvalho Chehab 1458a4e7866SMichael Krufky #ifdef CONFIG_VIDEO_AU0828_V4L2 146e8c26f45SHans Verkuil v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl); 1470c0d06caSMauro Carvalho Chehab v4l2_device_unregister(&dev->v4l2_dev); 1488a4e7866SMichael Krufky #endif 1490c0d06caSMauro Carvalho Chehab 1500c0d06caSMauro Carvalho Chehab usb_set_intfdata(interface, NULL); 1510c0d06caSMauro Carvalho Chehab 1520c0d06caSMauro Carvalho Chehab mutex_lock(&dev->mutex); 1530c0d06caSMauro Carvalho Chehab dev->usbdev = NULL; 1540c0d06caSMauro Carvalho Chehab mutex_unlock(&dev->mutex); 1550c0d06caSMauro Carvalho Chehab 1560c0d06caSMauro Carvalho Chehab kfree(dev); 1570c0d06caSMauro Carvalho Chehab 1580c0d06caSMauro Carvalho Chehab } 1590c0d06caSMauro Carvalho Chehab 1600c0d06caSMauro Carvalho Chehab static int au0828_usb_probe(struct usb_interface *interface, 1610c0d06caSMauro Carvalho Chehab const struct usb_device_id *id) 1620c0d06caSMauro Carvalho Chehab { 1638a4e7866SMichael Krufky int ifnum; 1648a4e7866SMichael Krufky #ifdef CONFIG_VIDEO_AU0828_V4L2 1658a4e7866SMichael Krufky int retval; 1668a4e7866SMichael Krufky #endif 1670c0d06caSMauro Carvalho Chehab struct au0828_dev *dev; 1680c0d06caSMauro Carvalho Chehab struct usb_device *usbdev = interface_to_usbdev(interface); 1690c0d06caSMauro Carvalho Chehab 1700c0d06caSMauro Carvalho Chehab ifnum = interface->altsetting->desc.bInterfaceNumber; 1710c0d06caSMauro Carvalho Chehab 1720c0d06caSMauro Carvalho Chehab if (ifnum != 0) 1730c0d06caSMauro Carvalho Chehab return -ENODEV; 1740c0d06caSMauro Carvalho Chehab 1750c0d06caSMauro Carvalho Chehab dprintk(1, "%s() vendor id 0x%x device id 0x%x ifnum:%d\n", __func__, 1760c0d06caSMauro Carvalho Chehab le16_to_cpu(usbdev->descriptor.idVendor), 1770c0d06caSMauro Carvalho Chehab le16_to_cpu(usbdev->descriptor.idProduct), 1780c0d06caSMauro Carvalho Chehab ifnum); 1790c0d06caSMauro Carvalho Chehab 1800c0d06caSMauro Carvalho Chehab /* 1810c0d06caSMauro Carvalho Chehab * Make sure we have 480 Mbps of bandwidth, otherwise things like 1820c0d06caSMauro Carvalho Chehab * video stream wouldn't likely work, since 12 Mbps is generally 1830c0d06caSMauro Carvalho Chehab * not enough even for most Digital TV streams. 1840c0d06caSMauro Carvalho Chehab */ 1850c0d06caSMauro Carvalho Chehab if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) { 1860c0d06caSMauro Carvalho Chehab printk(KERN_ERR "au0828: Device initialization failed.\n"); 1870c0d06caSMauro Carvalho Chehab printk(KERN_ERR "au0828: Device must be connected to a " 1880c0d06caSMauro Carvalho Chehab "high-speed USB 2.0 port.\n"); 1890c0d06caSMauro Carvalho Chehab return -ENODEV; 1900c0d06caSMauro Carvalho Chehab } 1910c0d06caSMauro Carvalho Chehab 1920c0d06caSMauro Carvalho Chehab dev = kzalloc(sizeof(*dev), GFP_KERNEL); 1930c0d06caSMauro Carvalho Chehab if (dev == NULL) { 1940c0d06caSMauro Carvalho Chehab printk(KERN_ERR "%s() Unable to allocate memory\n", __func__); 1950c0d06caSMauro Carvalho Chehab return -ENOMEM; 1960c0d06caSMauro Carvalho Chehab } 1970c0d06caSMauro Carvalho Chehab 1980c0d06caSMauro Carvalho Chehab mutex_init(&dev->lock); 1990c0d06caSMauro Carvalho Chehab mutex_lock(&dev->lock); 2000c0d06caSMauro Carvalho Chehab mutex_init(&dev->mutex); 2010c0d06caSMauro Carvalho Chehab mutex_init(&dev->dvb.lock); 2020c0d06caSMauro Carvalho Chehab dev->usbdev = usbdev; 2030c0d06caSMauro Carvalho Chehab dev->boardnr = id->driver_info; 2040c0d06caSMauro Carvalho Chehab 2058a4e7866SMichael Krufky #ifdef CONFIG_VIDEO_AU0828_V4L2 2060c0d06caSMauro Carvalho Chehab /* Create the v4l2_device */ 2070c0d06caSMauro Carvalho Chehab retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev); 2080c0d06caSMauro Carvalho Chehab if (retval) { 209e8c26f45SHans Verkuil pr_err("%s() v4l2_device_register failed\n", 2100c0d06caSMauro Carvalho Chehab __func__); 2110c0d06caSMauro Carvalho Chehab mutex_unlock(&dev->lock); 2120c0d06caSMauro Carvalho Chehab kfree(dev); 213e8c26f45SHans Verkuil return retval; 2140c0d06caSMauro Carvalho Chehab } 215e8c26f45SHans Verkuil /* This control handler will inherit the controls from au8522 */ 216e8c26f45SHans Verkuil retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4); 217e8c26f45SHans Verkuil if (retval) { 218e8c26f45SHans Verkuil pr_err("%s() v4l2_ctrl_handler_init failed\n", 219e8c26f45SHans Verkuil __func__); 220e8c26f45SHans Verkuil mutex_unlock(&dev->lock); 221e8c26f45SHans Verkuil kfree(dev); 222e8c26f45SHans Verkuil return retval; 223e8c26f45SHans Verkuil } 224e8c26f45SHans Verkuil dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl; 2258a4e7866SMichael Krufky #endif 2260c0d06caSMauro Carvalho Chehab 2270c0d06caSMauro Carvalho Chehab /* Power Up the bridge */ 2280c0d06caSMauro Carvalho Chehab au0828_write(dev, REG_600, 1 << 4); 2290c0d06caSMauro Carvalho Chehab 2300c0d06caSMauro Carvalho Chehab /* Bring up the GPIO's and supporting devices */ 2310c0d06caSMauro Carvalho Chehab au0828_gpio_setup(dev); 2320c0d06caSMauro Carvalho Chehab 2330c0d06caSMauro Carvalho Chehab /* I2C */ 2340c0d06caSMauro Carvalho Chehab au0828_i2c_register(dev); 2350c0d06caSMauro Carvalho Chehab 2360c0d06caSMauro Carvalho Chehab /* Setup */ 2370c0d06caSMauro Carvalho Chehab au0828_card_setup(dev); 2380c0d06caSMauro Carvalho Chehab 2398a4e7866SMichael Krufky #ifdef CONFIG_VIDEO_AU0828_V4L2 2400c0d06caSMauro Carvalho Chehab /* Analog TV */ 2410c0d06caSMauro Carvalho Chehab if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED) 2420c0d06caSMauro Carvalho Chehab au0828_analog_register(dev, interface); 2438a4e7866SMichael Krufky #endif 2440c0d06caSMauro Carvalho Chehab 2450c0d06caSMauro Carvalho Chehab /* Digital TV */ 2460c0d06caSMauro Carvalho Chehab au0828_dvb_register(dev); 2470c0d06caSMauro Carvalho Chehab 2480c0d06caSMauro Carvalho Chehab /* Store the pointer to the au0828_dev so it can be accessed in 2490c0d06caSMauro Carvalho Chehab au0828_usb_disconnect */ 2500c0d06caSMauro Carvalho Chehab usb_set_intfdata(interface, dev); 2510c0d06caSMauro Carvalho Chehab 2520c0d06caSMauro Carvalho Chehab printk(KERN_INFO "Registered device AU0828 [%s]\n", 2530c0d06caSMauro Carvalho Chehab dev->board.name == NULL ? "Unset" : dev->board.name); 2540c0d06caSMauro Carvalho Chehab 2550c0d06caSMauro Carvalho Chehab mutex_unlock(&dev->lock); 2560c0d06caSMauro Carvalho Chehab 2570c0d06caSMauro Carvalho Chehab return 0; 2580c0d06caSMauro Carvalho Chehab } 2590c0d06caSMauro Carvalho Chehab 2600c0d06caSMauro Carvalho Chehab static struct usb_driver au0828_usb_driver = { 2610c0d06caSMauro Carvalho Chehab .name = DRIVER_NAME, 2620c0d06caSMauro Carvalho Chehab .probe = au0828_usb_probe, 2630c0d06caSMauro Carvalho Chehab .disconnect = au0828_usb_disconnect, 2640c0d06caSMauro Carvalho Chehab .id_table = au0828_usb_id_table, 2650c0d06caSMauro Carvalho Chehab }; 2660c0d06caSMauro Carvalho Chehab 2670c0d06caSMauro Carvalho Chehab static int __init au0828_init(void) 2680c0d06caSMauro Carvalho Chehab { 2690c0d06caSMauro Carvalho Chehab int ret; 2700c0d06caSMauro Carvalho Chehab 2710c0d06caSMauro Carvalho Chehab if (au0828_debug & 1) 2720c0d06caSMauro Carvalho Chehab printk(KERN_INFO "%s() Debugging is enabled\n", __func__); 2730c0d06caSMauro Carvalho Chehab 2740c0d06caSMauro Carvalho Chehab if (au0828_debug & 2) 2750c0d06caSMauro Carvalho Chehab printk(KERN_INFO "%s() USB Debugging is enabled\n", __func__); 2760c0d06caSMauro Carvalho Chehab 2770c0d06caSMauro Carvalho Chehab if (au0828_debug & 4) 2780c0d06caSMauro Carvalho Chehab printk(KERN_INFO "%s() I2C Debugging is enabled\n", __func__); 2790c0d06caSMauro Carvalho Chehab 2800c0d06caSMauro Carvalho Chehab if (au0828_debug & 8) 2810c0d06caSMauro Carvalho Chehab printk(KERN_INFO "%s() Bridge Debugging is enabled\n", 2820c0d06caSMauro Carvalho Chehab __func__); 2830c0d06caSMauro Carvalho Chehab 2840c0d06caSMauro Carvalho Chehab printk(KERN_INFO "au0828 driver loaded\n"); 2850c0d06caSMauro Carvalho Chehab 2860c0d06caSMauro Carvalho Chehab ret = usb_register(&au0828_usb_driver); 2870c0d06caSMauro Carvalho Chehab if (ret) 2880c0d06caSMauro Carvalho Chehab printk(KERN_ERR "usb_register failed, error = %d\n", ret); 2890c0d06caSMauro Carvalho Chehab 2900c0d06caSMauro Carvalho Chehab return ret; 2910c0d06caSMauro Carvalho Chehab } 2920c0d06caSMauro Carvalho Chehab 2930c0d06caSMauro Carvalho Chehab static void __exit au0828_exit(void) 2940c0d06caSMauro Carvalho Chehab { 2950c0d06caSMauro Carvalho Chehab usb_deregister(&au0828_usb_driver); 2960c0d06caSMauro Carvalho Chehab } 2970c0d06caSMauro Carvalho Chehab 2980c0d06caSMauro Carvalho Chehab module_init(au0828_init); 2990c0d06caSMauro Carvalho Chehab module_exit(au0828_exit); 3000c0d06caSMauro Carvalho Chehab 3010c0d06caSMauro Carvalho Chehab MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products"); 3020c0d06caSMauro Carvalho Chehab MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>"); 3030c0d06caSMauro Carvalho Chehab MODULE_LICENSE("GPL"); 3040c0d06caSMauro Carvalho Chehab MODULE_VERSION("0.0.2"); 305