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- /*
- * Abilis Systems Single DVB-T Receiver
- * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
- * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
- *
- * 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, 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.
- */
- #include <linux/kernel.h>
- #include <linux/errno.h>
- #include <linux/slab.h>
- #include <linux/module.h>
- #include <linux/mm.h>
- #include <linux/kref.h>
- #include <linux/uaccess.h>
- #include <linux/usb.h>
- /* header file for usb device driver*/
- #include "as102_drv.h"
- #include "as10x_cmd.h"
- #include "as102_fe.h"
- #include "as102_fw.h"
- #include "dvbdev.h"
- int dual_tuner;
- module_param_named(dual_tuner, dual_tuner, int, 0644);
- MODULE_PARM_DESC(dual_tuner, "Activate Dual-Tuner config (default: off)");
- static int fw_upload = 1;
- module_param_named(fw_upload, fw_upload, int, 0644);
- MODULE_PARM_DESC(fw_upload, "Turn on/off default FW upload (default: on)");
- static int pid_filtering;
- module_param_named(pid_filtering, pid_filtering, int, 0644);
- MODULE_PARM_DESC(pid_filtering, "Activate HW PID filtering (default: off)");
- static int ts_auto_disable;
- module_param_named(ts_auto_disable, ts_auto_disable, int, 0644);
- MODULE_PARM_DESC(ts_auto_disable, "Stream Auto Enable on FW (default: off)");
- int elna_enable = 1;
- module_param_named(elna_enable, elna_enable, int, 0644);
- MODULE_PARM_DESC(elna_enable, "Activate eLNA (default: on)");
- DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
- static void as102_stop_stream(struct as102_dev_t *dev)
- {
- struct as10x_bus_adapter_t *bus_adap;
- if (dev != NULL)
- bus_adap = &dev->bus_adap;
- else
- return;
- if (bus_adap->ops->stop_stream != NULL)
- bus_adap->ops->stop_stream(dev);
- if (ts_auto_disable) {
- if (mutex_lock_interruptible(&dev->bus_adap.lock))
- return;
- if (as10x_cmd_stop_streaming(bus_adap) < 0)
- dev_dbg(&dev->bus_adap.usb_dev->dev,
- "as10x_cmd_stop_streaming failed\n");
- mutex_unlock(&dev->bus_adap.lock);
- }
- }
- static int as102_start_stream(struct as102_dev_t *dev)
- {
- struct as10x_bus_adapter_t *bus_adap;
- int ret = -EFAULT;
- if (dev != NULL)
- bus_adap = &dev->bus_adap;
- else
- return ret;
- if (bus_adap->ops->start_stream != NULL)
- ret = bus_adap->ops->start_stream(dev);
- if (ts_auto_disable) {
- if (mutex_lock_interruptible(&dev->bus_adap.lock))
- return -EFAULT;
- ret = as10x_cmd_start_streaming(bus_adap);
- mutex_unlock(&dev->bus_adap.lock);
- }
- return ret;
- }
- static int as10x_pid_filter(struct as102_dev_t *dev,
- int index, u16 pid, int onoff) {
- struct as10x_bus_adapter_t *bus_adap = &dev->bus_adap;
- int ret = -EFAULT;
- if (mutex_lock_interruptible(&dev->bus_adap.lock)) {
- dev_dbg(&dev->bus_adap.usb_dev->dev,
- "amutex_lock_interruptible(lock) failed !\n");
- return -EBUSY;
- }
- switch (onoff) {
- case 0:
- ret = as10x_cmd_del_PID_filter(bus_adap, (uint16_t) pid);
- dev_dbg(&dev->bus_adap.usb_dev->dev,
- "DEL_PID_FILTER([%02d] 0x%04x) ret = %d\n",
- index, pid, ret);
- break;
- case 1:
- {
- struct as10x_ts_filter filter;
- filter.type = TS_PID_TYPE_TS;
- filter.idx = 0xFF;
- filter.pid = pid;
- ret = as10x_cmd_add_PID_filter(bus_adap, &filter);
- dev_dbg(&dev->bus_adap.usb_dev->dev,
- "ADD_PID_FILTER([%02d -> %02d], 0x%04x) ret = %d\n",
- index, filter.idx, filter.pid, ret);
- break;
- }
- }
- mutex_unlock(&dev->bus_adap.lock);
- return ret;
- }
- static int as102_dvb_dmx_start_feed(struct dvb_demux_feed *dvbdmxfeed)
- {
- int ret = 0;
- struct dvb_demux *demux = dvbdmxfeed->demux;
- struct as102_dev_t *as102_dev = demux->priv;
- if (mutex_lock_interruptible(&as102_dev->sem))
- return -ERESTARTSYS;
- if (pid_filtering)
- as10x_pid_filter(as102_dev, dvbdmxfeed->index,
- dvbdmxfeed->pid, 1);
- if (as102_dev->streaming++ == 0)
- ret = as102_start_stream(as102_dev);
- mutex_unlock(&as102_dev->sem);
- return ret;
- }
- static int as102_dvb_dmx_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
- {
- struct dvb_demux *demux = dvbdmxfeed->demux;
- struct as102_dev_t *as102_dev = demux->priv;
- if (mutex_lock_interruptible(&as102_dev->sem))
- return -ERESTARTSYS;
- if (--as102_dev->streaming == 0)
- as102_stop_stream(as102_dev);
- if (pid_filtering)
- as10x_pid_filter(as102_dev, dvbdmxfeed->index,
- dvbdmxfeed->pid, 0);
- mutex_unlock(&as102_dev->sem);
- return 0;
- }
- static int as102_set_tune(void *priv, struct as10x_tune_args *tune_args)
- {
- struct as10x_bus_adapter_t *bus_adap = priv;
- int ret;
- /* Set frontend arguments */
- if (mutex_lock_interruptible(&bus_adap->lock))
- return -EBUSY;
- ret = as10x_cmd_set_tune(bus_adap, tune_args);
- if (ret != 0)
- dev_dbg(&bus_adap->usb_dev->dev,
- "as10x_cmd_set_tune failed. (err = %d)\n", ret);
- mutex_unlock(&bus_adap->lock);
- return ret;
- }
- static int as102_get_tps(void *priv, struct as10x_tps *tps)
- {
- struct as10x_bus_adapter_t *bus_adap = priv;
- int ret;
- if (mutex_lock_interruptible(&bus_adap->lock))
- return -EBUSY;
- /* send abilis command: GET_TPS */
- ret = as10x_cmd_get_tps(bus_adap, tps);
- mutex_unlock(&bus_adap->lock);
- return ret;
- }
- static int as102_get_status(void *priv, struct as10x_tune_status *tstate)
- {
- struct as10x_bus_adapter_t *bus_adap = priv;
- int ret;
- if (mutex_lock_interruptible(&bus_adap->lock))
- return -EBUSY;
- /* send abilis command: GET_TUNE_STATUS */
- ret = as10x_cmd_get_tune_status(bus_adap, tstate);
- if (ret < 0) {
- dev_dbg(&bus_adap->usb_dev->dev,
- "as10x_cmd_get_tune_status failed (err = %d)\n",
- ret);
- }
- mutex_unlock(&bus_adap->lock);
- return ret;
- }
- static int as102_get_stats(void *priv, struct as10x_demod_stats *demod_stats)
- {
- struct as10x_bus_adapter_t *bus_adap = priv;
- int ret;
- if (mutex_lock_interruptible(&bus_adap->lock))
- return -EBUSY;
- /* send abilis command: GET_TUNE_STATUS */
- ret = as10x_cmd_get_demod_stats(bus_adap, demod_stats);
- if (ret < 0) {
- dev_dbg(&bus_adap->usb_dev->dev,
- "as10x_cmd_get_demod_stats failed (probably not tuned)\n");
- } else {
- dev_dbg(&bus_adap->usb_dev->dev,
- "demod status: fc: 0x%08x, bad fc: 0x%08x, bytes corrected: 0x%08x , MER: 0x%04x\n",
- demod_stats->frame_count,
- demod_stats->bad_frame_count,
- demod_stats->bytes_fixed_by_rs,
- demod_stats->mer);
- }
- mutex_unlock(&bus_adap->lock);
- return ret;
- }
- static int as102_stream_ctrl(void *priv, int acquire, uint32_t elna_cfg)
- {
- struct as10x_bus_adapter_t *bus_adap = priv;
- int ret;
- if (mutex_lock_interruptible(&bus_adap->lock))
- return -EBUSY;
- if (acquire) {
- if (elna_enable)
- as10x_cmd_set_context(bus_adap,
- CONTEXT_LNA, elna_cfg);
- ret = as10x_cmd_turn_on(bus_adap);
- } else {
- ret = as10x_cmd_turn_off(bus_adap);
- }
- mutex_unlock(&bus_adap->lock);
- return ret;
- }
- static const struct as102_fe_ops as102_fe_ops = {
- .set_tune = as102_set_tune,
- .get_tps = as102_get_tps,
- .get_status = as102_get_status,
- .get_stats = as102_get_stats,
- .stream_ctrl = as102_stream_ctrl,
- };
- int as102_dvb_register(struct as102_dev_t *as102_dev)
- {
- struct device *dev = &as102_dev->bus_adap.usb_dev->dev;
- int ret;
- ret = dvb_register_adapter(&as102_dev->dvb_adap,
- as102_dev->name, THIS_MODULE,
- dev, adapter_nr);
- if (ret < 0) {
- dev_err(dev, "%s: dvb_register_adapter() failed: %d\n",
- __func__, ret);
- return ret;
- }
- as102_dev->dvb_dmx.priv = as102_dev;
- as102_dev->dvb_dmx.filternum = pid_filtering ? 16 : 256;
- as102_dev->dvb_dmx.feednum = 256;
- as102_dev->dvb_dmx.start_feed = as102_dvb_dmx_start_feed;
- as102_dev->dvb_dmx.stop_feed = as102_dvb_dmx_stop_feed;
- as102_dev->dvb_dmx.dmx.capabilities = DMX_TS_FILTERING |
- DMX_SECTION_FILTERING;
- as102_dev->dvb_dmxdev.filternum = as102_dev->dvb_dmx.filternum;
- as102_dev->dvb_dmxdev.demux = &as102_dev->dvb_dmx.dmx;
- as102_dev->dvb_dmxdev.capabilities = 0;
- ret = dvb_dmx_init(&as102_dev->dvb_dmx);
- if (ret < 0) {
- dev_err(dev, "%s: dvb_dmx_init() failed: %d\n", __func__, ret);
- goto edmxinit;
- }
- ret = dvb_dmxdev_init(&as102_dev->dvb_dmxdev, &as102_dev->dvb_adap);
- if (ret < 0) {
- dev_err(dev, "%s: dvb_dmxdev_init() failed: %d\n",
- __func__, ret);
- goto edmxdinit;
- }
- /* Attach the frontend */
- as102_dev->dvb_fe = dvb_attach(as102_attach, as102_dev->name,
- &as102_fe_ops,
- &as102_dev->bus_adap,
- as102_dev->elna_cfg);
- if (!as102_dev->dvb_fe) {
- ret = -ENODEV;
- dev_err(dev, "%s: as102_attach() failed: %d",
- __func__, ret);
- goto efereg;
- }
- ret = dvb_register_frontend(&as102_dev->dvb_adap, as102_dev->dvb_fe);
- if (ret < 0) {
- dev_err(dev, "%s: as102_dvb_register_frontend() failed: %d",
- __func__, ret);
- goto efereg;
- }
- /* init bus mutex for token locking */
- mutex_init(&as102_dev->bus_adap.lock);
- /* init start / stop stream mutex */
- mutex_init(&as102_dev->sem);
- /*
- * try to load as102 firmware. If firmware upload failed, we'll be
- * able to upload it later.
- */
- if (fw_upload)
- try_then_request_module(as102_fw_upload(&as102_dev->bus_adap),
- "firmware_class");
- pr_info("Registered device %s", as102_dev->name);
- return 0;
- efereg:
- dvb_dmxdev_release(&as102_dev->dvb_dmxdev);
- edmxdinit:
- dvb_dmx_release(&as102_dev->dvb_dmx);
- edmxinit:
- dvb_unregister_adapter(&as102_dev->dvb_adap);
- return ret;
- }
- void as102_dvb_unregister(struct as102_dev_t *as102_dev)
- {
- /* unregister as102 frontend */
- dvb_unregister_frontend(as102_dev->dvb_fe);
- /* detach frontend */
- dvb_frontend_detach(as102_dev->dvb_fe);
- /* unregister demux device */
- dvb_dmxdev_release(&as102_dev->dvb_dmxdev);
- dvb_dmx_release(&as102_dev->dvb_dmx);
- /* unregister dvb adapter */
- dvb_unregister_adapter(&as102_dev->dvb_adap);
- pr_info("Unregistered device %s", as102_dev->name);
- }
- module_usb_driver(as102_usb_driver);
- /* modinfo details */
- MODULE_DESCRIPTION(DRIVER_FULL_NAME);
- MODULE_LICENSE("GPL");
- MODULE_AUTHOR("Pierrick Hascoet <pierrick.hascoet@abilis.com>");
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