bdfbf95203
em28xx-cards.c: - Fix reversed val/rst values in both analog_gpio and digital_gpio vectors - Fix crash that would was occurring during every analog startup while looping over gpio_ctl - Remove what appears to be a redundant setting of gpio_ctl->val - Don't use OREN538 demodulation for the HVR-950 (prevents ATSC scanning from working) em28xx-dvb.c: - Tuner should be in digital mode when issuing the reset - Add copyright - Change struct definition (corresponds to fix in em28xx-cards.c for gpio_ctl looping) Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
177 lines
4.2 KiB
C
177 lines
4.2 KiB
C
/*
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DVB device driver for em28xx
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(c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org>
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(c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
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- Fixes for the driver to properly work with HVR-950
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Based on cx88-dvb and saa7134-dvb originally written by:
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(c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
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(c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License.
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*/
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#include <linux/kernel.h>
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#include <linux/usb.h>
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#include "em28xx.h"
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#include <media/v4l2-common.h>
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#include <media/videobuf-vmalloc.h>
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#include "lgdt330x.h"
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MODULE_DESCRIPTION("driver for em28xx based DVB cards");
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MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
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MODULE_LICENSE("GPL");
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static unsigned int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
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DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
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#define dprintk(level, fmt, arg...) do { \
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if (debug >= level) \
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printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg) \
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} while (0)
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static int
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buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
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{
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struct em28xx_fh *fh = vq->priv_data;
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struct em28xx *dev = fh->dev;
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*size = 16 * fh->dev->width * fh->dev->height >> 3;
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if (0 == *count)
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*count = EM28XX_DEF_BUF;
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if (*count < EM28XX_MIN_BUF)
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*count = EM28XX_MIN_BUF;
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dev->mode = EM28XX_DIGITAL_MODE;
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return 0;
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}
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/* ------------------------------------------------------------------ */
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static struct lgdt330x_config em2880_lgdt3303_dev = {
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.demod_address = 0x0e,
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.demod_chip = LGDT3303,
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};
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/* ------------------------------------------------------------------ */
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static int attach_xc3028(u8 addr, struct em28xx *dev)
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{
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struct dvb_frontend *fe;
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struct xc2028_ctrl ctl;
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struct xc2028_config cfg;
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memset (&cfg, 0, sizeof(cfg));
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cfg.i2c_adap = &dev->i2c_adap;
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cfg.i2c_addr = addr;
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cfg.ctrl = &ctl;
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cfg.callback = em28xx_tuner_callback;
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em28xx_setup_xc3028(dev, &ctl);
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if (!dev->dvb.frontend) {
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printk(KERN_ERR "%s/2: dvb frontend not attached. "
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"Can't attach xc3028\n",
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dev->name);
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return -EINVAL;
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}
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fe = dvb_attach(xc2028_attach, dev->dvb.frontend, &cfg);
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if (!fe) {
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printk(KERN_ERR "%s/2: xc3028 attach failed\n",
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dev->name);
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dvb_frontend_detach(dev->dvb.frontend);
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dvb_unregister_frontend(dev->dvb.frontend);
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dev->dvb.frontend = NULL;
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return -EINVAL;
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}
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printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);
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return 0;
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}
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static int dvb_init(struct em28xx *dev)
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{
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/* init struct videobuf_dvb */
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dev->dvb.name = dev->name;
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dev->qops->buf_setup = buffer_setup;
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videobuf_queue_vmalloc_init(&dev->dvb.dvbq, dev->qops,
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&dev->udev->dev, &dev->slock,
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V4L2_BUF_TYPE_VIDEO_CAPTURE,
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V4L2_FIELD_ALTERNATE,
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sizeof(struct em28xx_buffer), dev);
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/* init frontend */
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switch (dev->model) {
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case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950:
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/* Enable lgdt330x */
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dev->mode = EM28XX_DIGITAL_MODE;
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em28xx_tuner_callback(dev, XC2028_TUNER_RESET, 0);
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dev->dvb.frontend = dvb_attach(lgdt330x_attach,
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&em2880_lgdt3303_dev,
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&dev->i2c_adap);
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if (attach_xc3028(0x61, dev) < 0)
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return -EINVAL;
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break;
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default:
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printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
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" isn't supported yet\n",
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dev->name);
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break;
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}
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if (NULL == dev->dvb.frontend) {
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printk(KERN_ERR
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"%s/2: frontend initialization failed\n",
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dev->name);
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return -EINVAL;
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}
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/* register everything */
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return videobuf_dvb_register(&dev->dvb, THIS_MODULE, dev,
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&dev->udev->dev,
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adapter_nr);
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}
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static int dvb_fini(struct em28xx *dev)
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{
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if (dev->dvb.frontend)
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videobuf_dvb_unregister(&dev->dvb);
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return 0;
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}
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static struct em28xx_ops dvb_ops = {
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.id = EM28XX_DVB,
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.name = "Em28xx dvb Extension",
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.init = dvb_init,
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.fini = dvb_fini,
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};
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static int __init em28xx_dvb_register(void)
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{
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return em28xx_register_extension(&dvb_ops);
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}
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static void __exit em28xx_dvb_unregister(void)
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{
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em28xx_unregister_extension(&dvb_ops);
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}
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module_init(em28xx_dvb_register);
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module_exit(em28xx_dvb_unregister);
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