diff options
Diffstat (limited to 'drivers/media/video/cx231xx/cx231xx-dvb.c')
| -rw-r--r-- | drivers/media/video/cx231xx/cx231xx-dvb.c | 559 |
1 files changed, 559 insertions, 0 deletions
diff --git a/drivers/media/video/cx231xx/cx231xx-dvb.c b/drivers/media/video/cx231xx/cx231xx-dvb.c new file mode 100644 index 00000000000..c5082a4e8ce --- /dev/null +++ b/drivers/media/video/cx231xx/cx231xx-dvb.c @@ -0,0 +1,559 @@ +/* + DVB device driver for cx231xx + + Copyright (C) 2008 <srinivasa.deevi at conexant dot com> + Based on em28xx driver + + 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/kernel.h> +#include <linux/usb.h> + +#include "cx231xx.h" +#include <media/v4l2-common.h> +#include <media/videobuf-vmalloc.h> + +#include "xc5000.h" +#include "dvb_dummy_fe.h" + +MODULE_DESCRIPTION("driver for cx231xx based DVB cards"); +MODULE_AUTHOR("Srinivasa Deevi <srinivasa.deevi@conexant.com>"); +MODULE_LICENSE("GPL"); + +static unsigned int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "enable debug messages [dvb]"); + +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); + +#define dprintk(level, fmt, arg...) do { \ +if (debug >= level) \ + printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \ +} while (0) + +#define CX231XX_DVB_NUM_BUFS 5 +#define CX231XX_DVB_MAX_PACKETSIZE 564 +#define CX231XX_DVB_MAX_PACKETS 64 + +struct cx231xx_dvb { + struct dvb_frontend *frontend; + + /* feed count management */ + struct mutex lock; + int nfeeds; + + /* general boilerplate stuff */ + struct dvb_adapter adapter; + struct dvb_demux demux; + struct dmxdev dmxdev; + struct dmx_frontend fe_hw; + struct dmx_frontend fe_mem; + struct dvb_net net; +}; + +static inline void print_err_status(struct cx231xx *dev, int packet, int status) +{ + char *errmsg = "Unknown"; + + switch (status) { + case -ENOENT: + errmsg = "unlinked synchronuously"; + break; + case -ECONNRESET: + errmsg = "unlinked asynchronuously"; + break; + case -ENOSR: + errmsg = "Buffer error (overrun)"; + break; + case -EPIPE: + errmsg = "Stalled (device not responding)"; + break; + case -EOVERFLOW: + errmsg = "Babble (bad cable?)"; + break; + case -EPROTO: + errmsg = "Bit-stuff error (bad cable?)"; + break; + case -EILSEQ: + errmsg = "CRC/Timeout (could be anything)"; + break; + case -ETIME: + errmsg = "Device does not respond"; + break; + } + if (packet < 0) { + dprintk(1, "URB status %d [%s].\n", status, errmsg); + } else { + dprintk(1, "URB packet %d, status %d [%s].\n", + packet, status, errmsg); + } +} + +static inline int dvb_isoc_copy(struct cx231xx *dev, struct urb *urb) +{ + int i; + + if (!dev) + return 0; + + if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED)) + return 0; + + if (urb->status < 0) { + print_err_status(dev, -1, urb->status); + if (urb->status == -ENOENT) + return 0; + } + + for (i = 0; i < urb->number_of_packets; i++) { + int status = urb->iso_frame_desc[i].status; + + if (status < 0) { + print_err_status(dev, i, status); + if (urb->iso_frame_desc[i].status != -EPROTO) + continue; + } + + dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer + + urb->iso_frame_desc[i].offset, + urb->iso_frame_desc[i].actual_length); + } + + return 0; +} + +static int start_streaming(struct cx231xx_dvb *dvb) +{ + int rc; + struct cx231xx *dev = dvb->adapter.priv; + + usb_set_interface(dev->udev, 0, 1); + rc = cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE); + if (rc < 0) + return rc; + + return cx231xx_init_isoc(dev, CX231XX_DVB_MAX_PACKETS, + CX231XX_DVB_NUM_BUFS, + CX231XX_DVB_MAX_PACKETSIZE, dvb_isoc_copy); +} + +static int stop_streaming(struct cx231xx_dvb *dvb) +{ + struct cx231xx *dev = dvb->adapter.priv; + + cx231xx_uninit_isoc(dev); + + cx231xx_set_mode(dev, CX231XX_SUSPEND); + + return 0; +} + +static int start_feed(struct dvb_demux_feed *feed) +{ + struct dvb_demux *demux = feed->demux; + struct cx231xx_dvb *dvb = demux->priv; + int rc, ret; + + if (!demux->dmx.frontend) + return -EINVAL; + + mutex_lock(&dvb->lock); + dvb->nfeeds++; + rc = dvb->nfeeds; + + if (dvb->nfeeds == 1) { + ret = start_streaming(dvb); + if (ret < 0) + rc = ret; + } + + mutex_unlock(&dvb->lock); + return rc; +} + +static int stop_feed(struct dvb_demux_feed *feed) +{ + struct dvb_demux *demux = feed->demux; + struct cx231xx_dvb *dvb = demux->priv; + int err = 0; + + mutex_lock(&dvb->lock); + dvb->nfeeds--; + + if (0 == dvb->nfeeds) + err = stop_streaming(dvb); + + mutex_unlock(&dvb->lock); + return err; +} + +/* ------------------------------------------------------------------ */ +static int cx231xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire) +{ + struct cx231xx *dev = fe->dvb->priv; + + if (acquire) + return cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE); + else + return cx231xx_set_mode(dev, CX231XX_SUSPEND); +} + +/* ------------------------------------------------------------------ */ + +static struct xc5000_config cnxt_rde250_tunerconfig = { + .i2c_address = 0x61, + .if_khz = 5380, +}; + +/* ------------------------------------------------------------------ */ +#if 0 +static int attach_xc5000(u8 addr, struct cx231xx *dev) +{ + + struct dvb_frontend *fe; + struct xc5000_config cfg; + + memset(&cfg, 0, sizeof(cfg)); + cfg.i2c_adap = &dev->i2c_bus[1].i2c_adap; + cfg.i2c_addr = addr; + + if (!dev->dvb->frontend) { + printk(KERN_ERR "%s/2: dvb frontend not attached. " + "Can't attach xc5000\n", dev->name); + return -EINVAL; + } + + fe = dvb_attach(xc5000_attach, dev->dvb->frontend, &cfg); + if (!fe) { + printk(KERN_ERR "%s/2: xc5000 attach failed\n", dev->name); + dvb_frontend_detach(dev->dvb->frontend); + dev->dvb->frontend = NULL; + return -EINVAL; + } + + printk(KERN_INFO "%s/2: xc5000 attached\n", dev->name); + + return 0; +} +#endif + +int cx231xx_set_analog_freq(struct cx231xx *dev, u32 freq) +{ + int status = 0; + + if ((dev->dvb != NULL) && (dev->dvb->frontend != NULL)) { + + struct dvb_tuner_ops *dops = &dev->dvb->frontend->ops.tuner_ops; + + if (dops->set_analog_params != NULL) { + struct analog_parameters params; + + params.frequency = freq; + params.std = dev->norm; + params.mode = 0; /* 0- Air; 1 - cable */ + /*params.audmode = ; */ + + /* Set the analog parameters to set the frequency */ + cx231xx_info("Setting Frequency for XC5000\n"); + dops->set_analog_params(dev->dvb->frontend, ¶ms); + } + + } + + return status; +} + +int cx231xx_reset_analog_tuner(struct cx231xx *dev) +{ + int status = 0; + + if ((dev->dvb != NULL) && (dev->dvb->frontend != NULL)) { + + struct dvb_tuner_ops *dops = &dev->dvb->frontend->ops.tuner_ops; + + if (dops->init != NULL && !dev->xc_fw_load_done) { + + cx231xx_info("Reloading firmware for XC5000\n"); + status = dops->init(dev->dvb->frontend); + if (status == 0) { + dev->xc_fw_load_done = 1; + cx231xx_info + ("XC5000 firmware download completed\n"); + } else { + dev->xc_fw_load_done = 0; + cx231xx_info + ("XC5000 firmware download failed !!!\n"); + } + } + + } + + return status; +} + +/* ------------------------------------------------------------------ */ + +static int register_dvb(struct cx231xx_dvb *dvb, + struct module *module, + struct cx231xx *dev, struct device *device) +{ + int result; + + mutex_init(&dvb->lock); + + /* register adapter */ + result = dvb_register_adapter(&dvb->adapter, dev->name, module, device, + adapter_nr); + if (result < 0) { + printk(KERN_WARNING + "%s: dvb_register_adapter failed (errno = %d)\n", + dev->name, result); + goto fail_adapter; + } + + /* Ensure all frontends negotiate bus access */ + dvb->frontend->ops.ts_bus_ctrl = cx231xx_dvb_bus_ctrl; + + dvb->adapter.priv = dev; + + /* register frontend */ + result = dvb_register_frontend(&dvb->adapter, dvb->frontend); + if (result < 0) { + printk(KERN_WARNING + "%s: dvb_register_frontend failed (errno = %d)\n", + dev->name, result); + goto fail_frontend; + } + + /* register demux stuff */ + dvb->demux.dmx.capabilities = + DMX_TS_FILTERING | DMX_SECTION_FILTERING | + DMX_MEMORY_BASED_FILTERING; + dvb->demux.priv = dvb; + dvb->demux.filternum = 256; + dvb->demux.feednum = 256; + dvb->demux.start_feed = start_feed; + dvb->demux.stop_feed = stop_feed; + + result = dvb_dmx_init(&dvb->demux); + if (result < 0) { + printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n", + dev->name, result); + goto fail_dmx; + } + + dvb->dmxdev.filternum = 256; + dvb->dmxdev.demux = &dvb->demux.dmx; + dvb->dmxdev.capabilities = 0; + result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter); + if (result < 0) { + printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n", + dev->name, result); + goto fail_dmxdev; + } + + dvb->fe_hw.source = DMX_FRONTEND_0; + result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw); + if (result < 0) { + printk(KERN_WARNING + "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n", + dev->name, result); + goto fail_fe_hw; + } + + dvb->fe_mem.source = DMX_MEMORY_FE; + result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem); + if (result < 0) { + printk(KERN_WARNING + "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n", + dev->name, result); + goto fail_fe_mem; + } + + result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw); + if (result < 0) { + printk(KERN_WARNING + "%s: connect_frontend failed (errno = %d)\n", dev->name, + result); + goto fail_fe_conn; + } + + /* register network adapter */ + dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx); + return 0; + +fail_fe_conn: + dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); +fail_fe_mem: + dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); +fail_fe_hw: + dvb_dmxdev_release(&dvb->dmxdev); +fail_dmxdev: + dvb_dmx_release(&dvb->demux); +fail_dmx: + dvb_unregister_frontend(dvb->frontend); +fail_frontend: + dvb_frontend_detach(dvb->frontend); + dvb_unregister_adapter(&dvb->adapter); +fail_adapter: + return result; +} + +static void unregister_dvb(struct cx231xx_dvb *dvb) +{ + dvb_net_release(&dvb->net); + dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); + dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); + dvb_dmxdev_release(&dvb->dmxdev); + dvb_dmx_release(&dvb->demux); + dvb_unregister_frontend(dvb->frontend); + dvb_frontend_detach(dvb->frontend); + dvb_unregister_adapter(&dvb->adapter); +} + +static int dvb_init(struct cx231xx *dev) +{ + int result = 0; + struct cx231xx_dvb *dvb; + + if (!dev->board.has_dvb) { + /* This device does not support the extension */ + return 0; + } + + dvb = kzalloc(sizeof(struct cx231xx_dvb), GFP_KERNEL); + + if (dvb == NULL) { + printk(KERN_INFO "cx231xx_dvb: memory allocation failed\n"); + return -ENOMEM; + } + dev->dvb = dvb; + dev->cx231xx_set_analog_freq = cx231xx_set_analog_freq; + dev->cx231xx_reset_analog_tuner = cx231xx_reset_analog_tuner; + + cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE); + /* init frontend */ + switch (dev->model) { + case CX231XX_BOARD_CNXT_RDE_250: + + /* dev->dvb->frontend = dvb_attach(s5h1411_attach, + &dvico_s5h1411_config, + &dev->i2c_bus[1].i2c_adap); */ + dev->dvb->frontend = dvb_attach(dvb_dummy_fe_ofdm_attach); + + if (dev->dvb->frontend == NULL) { + printk(DRIVER_NAME + ": Failed to attach dummy front end\n"); + result = -EINVAL; + goto out_free; + } + + /* define general-purpose callback pointer */ + dvb->frontend->callback = cx231xx_tuner_callback; + + if (dvb_attach(xc5000_attach, dev->dvb->frontend, + &dev->i2c_bus[1].i2c_adap, + &cnxt_rde250_tunerconfig) < 0) { + result = -EINVAL; + goto out_free; + } + + break; + case CX231XX_BOARD_CNXT_RDU_250: + + dev->dvb->frontend = dvb_attach(dvb_dummy_fe_ofdm_attach); + + if (dev->dvb->frontend == NULL) { + printk(DRIVER_NAME + ": Failed to attach dummy front end\n"); + result = -EINVAL; + goto out_free; + } + + /* define general-purpose callback pointer */ + dvb->frontend->callback = cx231xx_tuner_callback; + + if (dvb_attach(xc5000_attach, dev->dvb->frontend, + &dev->i2c_bus[1].i2c_adap, + &cnxt_rde250_tunerconfig) < 0) { + result = -EINVAL; + goto out_free; + } + break; + + default: + printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card" + " isn't supported yet\n", dev->name); + break; + } + if (NULL == dvb->frontend) { + printk(KERN_ERR + "%s/2: frontend initialization failed\n", dev->name); + result = -EINVAL; + goto out_free; + } + + /* register everything */ + result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev); + + if (result < 0) + goto out_free; + + cx231xx_set_mode(dev, CX231XX_SUSPEND); + printk(KERN_INFO "Successfully loaded cx231xx-dvb\n"); + return 0; + +out_free: + cx231xx_set_mode(dev, CX231XX_SUSPEND); + kfree(dvb); + dev->dvb = NULL; + return result; +} + +static int dvb_fini(struct cx231xx *dev) +{ + if (!dev->board.has_dvb) { + /* This device does not support the extension */ + return 0; + } + + if (dev->dvb) { + unregister_dvb(dev->dvb); + dev->dvb = NULL; + } + + return 0; +} + +static struct cx231xx_ops dvb_ops = { + .id = CX231XX_DVB, + .name = "Cx231xx dvb Extension", + .init = dvb_init, + .fini = dvb_fini, +}; + +static int __init cx231xx_dvb_register(void) +{ + return cx231xx_register_extension(&dvb_ops); +} + +static void __exit cx231xx_dvb_unregister(void) +{ + cx231xx_unregister_extension(&dvb_ops); +} + +module_init(cx231xx_dvb_register); +module_exit(cx231xx_dvb_unregister); |