Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 1 | /* |
| 2 | DVB device driver for em28xx |
| 3 | |
| 4 | (c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org> |
| 5 | |
Devin Heitmueller | bdfbf95 | 2008-04-17 21:38:27 -0300 | [diff] [blame] | 6 | (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com> |
| 7 | - Fixes for the driver to properly work with HVR-950 |
| 8 | |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 9 | Based on cx88-dvb and saa7134-dvb originally written by: |
| 10 | (c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au> |
| 11 | (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] |
| 12 | |
| 13 | This program is free software; you can redistribute it and/or modify |
| 14 | it under the terms of the GNU General Public License as published by |
| 15 | the Free Software Foundation; either version 2 of the License. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/usb.h> |
| 20 | |
| 21 | #include "em28xx.h" |
| 22 | #include <media/v4l2-common.h> |
| 23 | #include <media/videobuf-vmalloc.h> |
| 24 | |
| 25 | #include "lgdt330x.h" |
Aidan Thornton | 7e6388a | 2008-04-17 21:40:03 -0300 | [diff] [blame^] | 26 | #include "zl10353.h" |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 27 | |
| 28 | MODULE_DESCRIPTION("driver for em28xx based DVB cards"); |
| 29 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>"); |
| 30 | MODULE_LICENSE("GPL"); |
| 31 | |
| 32 | static unsigned int debug; |
| 33 | module_param(debug, int, 0644); |
| 34 | MODULE_PARM_DESC(debug, "enable debug messages [dvb]"); |
| 35 | |
| 36 | DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); |
| 37 | |
| 38 | #define dprintk(level, fmt, arg...) do { \ |
| 39 | if (debug >= level) \ |
| 40 | printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg) \ |
| 41 | } while (0) |
| 42 | |
| 43 | static int |
| 44 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) |
| 45 | { |
| 46 | struct em28xx_fh *fh = vq->priv_data; |
| 47 | struct em28xx *dev = fh->dev; |
| 48 | |
Mauro Carvalho Chehab | 52284c3 | 2008-04-17 21:38:38 -0300 | [diff] [blame] | 49 | /* FIXME: The better would be to allocate a smaller buffer */ |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 50 | *size = 16 * fh->dev->width * fh->dev->height >> 3; |
| 51 | if (0 == *count) |
| 52 | *count = EM28XX_DEF_BUF; |
| 53 | |
| 54 | if (*count < EM28XX_MIN_BUF) |
| 55 | *count = EM28XX_MIN_BUF; |
| 56 | |
| 57 | dev->mode = EM28XX_DIGITAL_MODE; |
| 58 | |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | /* ------------------------------------------------------------------ */ |
| 63 | |
Mauro Carvalho Chehab | 227ad4a | 2008-04-17 21:37:40 -0300 | [diff] [blame] | 64 | static struct lgdt330x_config em2880_lgdt3303_dev = { |
| 65 | .demod_address = 0x0e, |
| 66 | .demod_chip = LGDT3303, |
| 67 | }; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 68 | |
Aidan Thornton | 7e6388a | 2008-04-17 21:40:03 -0300 | [diff] [blame^] | 69 | static struct zl10353_config em28xx_zl10353_with_xc3028 = { |
| 70 | .demod_address = (0x1e >> 1), |
| 71 | .no_tuner = 1, |
| 72 | .parallel_ts = 1, |
| 73 | .if2 = 45600, |
| 74 | }; |
| 75 | |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 76 | /* ------------------------------------------------------------------ */ |
| 77 | |
| 78 | static int attach_xc3028(u8 addr, struct em28xx *dev) |
| 79 | { |
| 80 | struct dvb_frontend *fe; |
| 81 | struct xc2028_ctrl ctl; |
Mauro Carvalho Chehab | 3ca9c09 | 2008-04-17 21:37:53 -0300 | [diff] [blame] | 82 | struct xc2028_config cfg; |
| 83 | |
| 84 | memset (&cfg, 0, sizeof(cfg)); |
| 85 | cfg.i2c_adap = &dev->i2c_adap; |
| 86 | cfg.i2c_addr = addr; |
| 87 | cfg.ctrl = &ctl; |
| 88 | cfg.callback = em28xx_tuner_callback; |
| 89 | |
| 90 | em28xx_setup_xc3028(dev, &ctl); |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 91 | |
| 92 | if (!dev->dvb.frontend) { |
| 93 | printk(KERN_ERR "%s/2: dvb frontend not attached. " |
| 94 | "Can't attach xc3028\n", |
| 95 | dev->name); |
| 96 | return -EINVAL; |
| 97 | } |
| 98 | |
| 99 | fe = dvb_attach(xc2028_attach, dev->dvb.frontend, &cfg); |
| 100 | if (!fe) { |
| 101 | printk(KERN_ERR "%s/2: xc3028 attach failed\n", |
| 102 | dev->name); |
| 103 | dvb_frontend_detach(dev->dvb.frontend); |
| 104 | dvb_unregister_frontend(dev->dvb.frontend); |
| 105 | dev->dvb.frontend = NULL; |
| 106 | return -EINVAL; |
| 107 | } |
| 108 | |
| 109 | printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name); |
| 110 | |
| 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | static int dvb_init(struct em28xx *dev) |
| 115 | { |
| 116 | /* init struct videobuf_dvb */ |
| 117 | dev->dvb.name = dev->name; |
| 118 | |
| 119 | dev->qops->buf_setup = buffer_setup; |
| 120 | |
Mauro Carvalho Chehab | 52284c3 | 2008-04-17 21:38:38 -0300 | [diff] [blame] | 121 | /* FIXME: Do we need more initialization here? */ |
| 122 | memset(&dev->dvb_fh, 0, sizeof (dev->dvb_fh)); |
| 123 | dev->dvb_fh.dev = dev; |
| 124 | dev->dvb_fh.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 125 | |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 126 | videobuf_queue_vmalloc_init(&dev->dvb.dvbq, dev->qops, |
| 127 | &dev->udev->dev, &dev->slock, |
| 128 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 129 | V4L2_FIELD_ALTERNATE, |
Mauro Carvalho Chehab | 52284c3 | 2008-04-17 21:38:38 -0300 | [diff] [blame] | 130 | sizeof(struct em28xx_buffer), &dev->dvb_fh); |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 131 | |
| 132 | /* init frontend */ |
| 133 | switch (dev->model) { |
Mauro Carvalho Chehab | 227ad4a | 2008-04-17 21:37:40 -0300 | [diff] [blame] | 134 | case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950: |
| 135 | /* Enable lgdt330x */ |
Devin Heitmueller | bdfbf95 | 2008-04-17 21:38:27 -0300 | [diff] [blame] | 136 | dev->mode = EM28XX_DIGITAL_MODE; |
Mauro Carvalho Chehab | 227ad4a | 2008-04-17 21:37:40 -0300 | [diff] [blame] | 137 | em28xx_tuner_callback(dev, XC2028_TUNER_RESET, 0); |
| 138 | |
| 139 | dev->dvb.frontend = dvb_attach(lgdt330x_attach, |
| 140 | &em2880_lgdt3303_dev, |
| 141 | &dev->i2c_adap); |
| 142 | if (attach_xc3028(0x61, dev) < 0) |
| 143 | return -EINVAL; |
| 144 | break; |
Aidan Thornton | 7e6388a | 2008-04-17 21:40:03 -0300 | [diff] [blame^] | 145 | case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900: |
| 146 | /* Enable zl10353 */ |
| 147 | dev->mode = EM28XX_DIGITAL_MODE; |
| 148 | em28xx_tuner_callback(dev, XC2028_TUNER_RESET, 0); |
| 149 | dev->dvb.frontend = dvb_attach(zl10353_attach, |
| 150 | &em28xx_zl10353_with_xc3028, |
| 151 | &dev->i2c_adap); |
| 152 | if (attach_xc3028(0x61, dev) < 0) |
| 153 | return -EINVAL; |
| 154 | break; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 155 | default: |
| 156 | printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card" |
| 157 | " isn't supported yet\n", |
| 158 | dev->name); |
| 159 | break; |
| 160 | } |
| 161 | if (NULL == dev->dvb.frontend) { |
| 162 | printk(KERN_ERR |
| 163 | "%s/2: frontend initialization failed\n", |
| 164 | dev->name); |
| 165 | return -EINVAL; |
| 166 | } |
| 167 | |
| 168 | /* register everything */ |
| 169 | return videobuf_dvb_register(&dev->dvb, THIS_MODULE, dev, |
| 170 | &dev->udev->dev, |
| 171 | adapter_nr); |
| 172 | } |
| 173 | |
| 174 | static int dvb_fini(struct em28xx *dev) |
| 175 | { |
| 176 | if (dev->dvb.frontend) |
| 177 | videobuf_dvb_unregister(&dev->dvb); |
| 178 | |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | static struct em28xx_ops dvb_ops = { |
| 183 | .id = EM28XX_DVB, |
| 184 | .name = "Em28xx dvb Extension", |
| 185 | .init = dvb_init, |
| 186 | .fini = dvb_fini, |
| 187 | }; |
| 188 | |
| 189 | static int __init em28xx_dvb_register(void) |
| 190 | { |
| 191 | return em28xx_register_extension(&dvb_ops); |
| 192 | } |
| 193 | |
| 194 | static void __exit em28xx_dvb_unregister(void) |
| 195 | { |
| 196 | em28xx_unregister_extension(&dvb_ops); |
| 197 | } |
| 198 | |
| 199 | module_init(em28xx_dvb_register); |
| 200 | module_exit(em28xx_dvb_unregister); |