--- /dev/null
+/*
+ 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);
projects / linux-2.6-omap-h63xx.git / blobdiff