// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Abilis Systems Single DVB-T Receiver
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* Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
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* Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/kref.h>
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#include <linux/uaccess.h>
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#include <linux/usb.h>
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/* header file for usb device driver*/
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#include "as102_drv.h"
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#include "as10x_cmd.h"
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#include "as102_fe.h"
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#include "as102_fw.h"
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#include <media/dvbdev.h>
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int dual_tuner;
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module_param_named(dual_tuner, dual_tuner, int, 0644);
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MODULE_PARM_DESC(dual_tuner, "Activate Dual-Tuner config (default: off)");
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static int fw_upload = 1;
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module_param_named(fw_upload, fw_upload, int, 0644);
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MODULE_PARM_DESC(fw_upload, "Turn on/off default FW upload (default: on)");
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static int pid_filtering;
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module_param_named(pid_filtering, pid_filtering, int, 0644);
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MODULE_PARM_DESC(pid_filtering, "Activate HW PID filtering (default: off)");
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static int ts_auto_disable;
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module_param_named(ts_auto_disable, ts_auto_disable, int, 0644);
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MODULE_PARM_DESC(ts_auto_disable, "Stream Auto Enable on FW (default: off)");
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int elna_enable = 1;
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module_param_named(elna_enable, elna_enable, int, 0644);
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MODULE_PARM_DESC(elna_enable, "Activate eLNA (default: on)");
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DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
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static void as102_stop_stream(struct as102_dev_t *dev)
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{
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struct as10x_bus_adapter_t *bus_adap;
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if (dev != NULL)
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bus_adap = &dev->bus_adap;
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else
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return;
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if (bus_adap->ops->stop_stream != NULL)
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bus_adap->ops->stop_stream(dev);
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if (ts_auto_disable) {
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if (mutex_lock_interruptible(&dev->bus_adap.lock))
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return;
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if (as10x_cmd_stop_streaming(bus_adap) < 0)
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dev_dbg(&dev->bus_adap.usb_dev->dev,
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"as10x_cmd_stop_streaming failed\n");
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mutex_unlock(&dev->bus_adap.lock);
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}
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}
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static int as102_start_stream(struct as102_dev_t *dev)
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{
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struct as10x_bus_adapter_t *bus_adap;
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int ret = -EFAULT;
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if (dev != NULL)
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bus_adap = &dev->bus_adap;
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else
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return ret;
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if (bus_adap->ops->start_stream != NULL)
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ret = bus_adap->ops->start_stream(dev);
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if (ts_auto_disable) {
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if (mutex_lock_interruptible(&dev->bus_adap.lock))
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return -EFAULT;
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ret = as10x_cmd_start_streaming(bus_adap);
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mutex_unlock(&dev->bus_adap.lock);
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}
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return ret;
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}
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static int as10x_pid_filter(struct as102_dev_t *dev,
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int index, u16 pid, int onoff) {
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struct as10x_bus_adapter_t *bus_adap = &dev->bus_adap;
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int ret = -EFAULT;
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if (mutex_lock_interruptible(&dev->bus_adap.lock)) {
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dev_dbg(&dev->bus_adap.usb_dev->dev,
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"amutex_lock_interruptible(lock) failed !\n");
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return -EBUSY;
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}
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switch (onoff) {
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case 0:
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ret = as10x_cmd_del_PID_filter(bus_adap, (uint16_t) pid);
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dev_dbg(&dev->bus_adap.usb_dev->dev,
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"DEL_PID_FILTER([%02d] 0x%04x) ret = %d\n",
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index, pid, ret);
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break;
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case 1:
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{
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struct as10x_ts_filter filter;
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filter.type = TS_PID_TYPE_TS;
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filter.idx = 0xFF;
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filter.pid = pid;
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ret = as10x_cmd_add_PID_filter(bus_adap, &filter);
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dev_dbg(&dev->bus_adap.usb_dev->dev,
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"ADD_PID_FILTER([%02d -> %02d], 0x%04x) ret = %d\n",
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index, filter.idx, filter.pid, ret);
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break;
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}
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}
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mutex_unlock(&dev->bus_adap.lock);
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return ret;
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}
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static int as102_dvb_dmx_start_feed(struct dvb_demux_feed *dvbdmxfeed)
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{
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int ret = 0;
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struct dvb_demux *demux = dvbdmxfeed->demux;
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struct as102_dev_t *as102_dev = demux->priv;
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if (mutex_lock_interruptible(&as102_dev->sem))
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return -ERESTARTSYS;
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if (pid_filtering)
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as10x_pid_filter(as102_dev, dvbdmxfeed->index,
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dvbdmxfeed->pid, 1);
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if (as102_dev->streaming++ == 0)
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ret = as102_start_stream(as102_dev);
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mutex_unlock(&as102_dev->sem);
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return ret;
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}
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static int as102_dvb_dmx_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
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{
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struct dvb_demux *demux = dvbdmxfeed->demux;
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struct as102_dev_t *as102_dev = demux->priv;
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if (mutex_lock_interruptible(&as102_dev->sem))
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return -ERESTARTSYS;
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if (--as102_dev->streaming == 0)
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as102_stop_stream(as102_dev);
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if (pid_filtering)
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as10x_pid_filter(as102_dev, dvbdmxfeed->index,
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dvbdmxfeed->pid, 0);
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mutex_unlock(&as102_dev->sem);
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return 0;
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}
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static int as102_set_tune(void *priv, struct as10x_tune_args *tune_args)
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{
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struct as10x_bus_adapter_t *bus_adap = priv;
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int ret;
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/* Set frontend arguments */
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if (mutex_lock_interruptible(&bus_adap->lock))
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return -EBUSY;
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ret = as10x_cmd_set_tune(bus_adap, tune_args);
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if (ret != 0)
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dev_dbg(&bus_adap->usb_dev->dev,
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"as10x_cmd_set_tune failed. (err = %d)\n", ret);
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mutex_unlock(&bus_adap->lock);
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return ret;
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}
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static int as102_get_tps(void *priv, struct as10x_tps *tps)
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{
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struct as10x_bus_adapter_t *bus_adap = priv;
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int ret;
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if (mutex_lock_interruptible(&bus_adap->lock))
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return -EBUSY;
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/* send abilis command: GET_TPS */
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ret = as10x_cmd_get_tps(bus_adap, tps);
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mutex_unlock(&bus_adap->lock);
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return ret;
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}
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static int as102_get_status(void *priv, struct as10x_tune_status *tstate)
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{
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struct as10x_bus_adapter_t *bus_adap = priv;
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int ret;
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if (mutex_lock_interruptible(&bus_adap->lock))
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return -EBUSY;
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/* send abilis command: GET_TUNE_STATUS */
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ret = as10x_cmd_get_tune_status(bus_adap, tstate);
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if (ret < 0) {
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dev_dbg(&bus_adap->usb_dev->dev,
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"as10x_cmd_get_tune_status failed (err = %d)\n",
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ret);
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}
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mutex_unlock(&bus_adap->lock);
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return ret;
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}
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static int as102_get_stats(void *priv, struct as10x_demod_stats *demod_stats)
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{
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struct as10x_bus_adapter_t *bus_adap = priv;
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int ret;
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if (mutex_lock_interruptible(&bus_adap->lock))
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return -EBUSY;
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/* send abilis command: GET_TUNE_STATUS */
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ret = as10x_cmd_get_demod_stats(bus_adap, demod_stats);
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if (ret < 0) {
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dev_dbg(&bus_adap->usb_dev->dev,
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"as10x_cmd_get_demod_stats failed (probably not tuned)\n");
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} else {
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dev_dbg(&bus_adap->usb_dev->dev,
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"demod status: fc: 0x%08x, bad fc: 0x%08x, bytes corrected: 0x%08x , MER: 0x%04x\n",
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demod_stats->frame_count,
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demod_stats->bad_frame_count,
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demod_stats->bytes_fixed_by_rs,
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demod_stats->mer);
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}
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mutex_unlock(&bus_adap->lock);
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return ret;
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}
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static int as102_stream_ctrl(void *priv, int acquire, uint32_t elna_cfg)
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{
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struct as10x_bus_adapter_t *bus_adap = priv;
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int ret;
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if (mutex_lock_interruptible(&bus_adap->lock))
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return -EBUSY;
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if (acquire) {
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if (elna_enable)
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as10x_cmd_set_context(bus_adap,
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CONTEXT_LNA, elna_cfg);
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ret = as10x_cmd_turn_on(bus_adap);
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} else {
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ret = as10x_cmd_turn_off(bus_adap);
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}
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mutex_unlock(&bus_adap->lock);
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return ret;
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}
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static const struct as102_fe_ops as102_fe_ops = {
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.set_tune = as102_set_tune,
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.get_tps = as102_get_tps,
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.get_status = as102_get_status,
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.get_stats = as102_get_stats,
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.stream_ctrl = as102_stream_ctrl,
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};
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int as102_dvb_register(struct as102_dev_t *as102_dev)
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{
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struct device *dev = &as102_dev->bus_adap.usb_dev->dev;
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int ret;
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ret = dvb_register_adapter(&as102_dev->dvb_adap,
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as102_dev->name, THIS_MODULE,
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dev, adapter_nr);
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if (ret < 0) {
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dev_err(dev, "%s: dvb_register_adapter() failed: %d\n",
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__func__, ret);
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return ret;
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}
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as102_dev->dvb_dmx.priv = as102_dev;
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as102_dev->dvb_dmx.filternum = pid_filtering ? 16 : 256;
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as102_dev->dvb_dmx.feednum = 256;
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as102_dev->dvb_dmx.start_feed = as102_dvb_dmx_start_feed;
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as102_dev->dvb_dmx.stop_feed = as102_dvb_dmx_stop_feed;
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as102_dev->dvb_dmx.dmx.capabilities = DMX_TS_FILTERING |
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DMX_SECTION_FILTERING;
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as102_dev->dvb_dmxdev.filternum = as102_dev->dvb_dmx.filternum;
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as102_dev->dvb_dmxdev.demux = &as102_dev->dvb_dmx.dmx;
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as102_dev->dvb_dmxdev.capabilities = 0;
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ret = dvb_dmx_init(&as102_dev->dvb_dmx);
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if (ret < 0) {
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dev_err(dev, "%s: dvb_dmx_init() failed: %d\n", __func__, ret);
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goto edmxinit;
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}
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ret = dvb_dmxdev_init(&as102_dev->dvb_dmxdev, &as102_dev->dvb_adap);
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if (ret < 0) {
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dev_err(dev, "%s: dvb_dmxdev_init() failed: %d\n",
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__func__, ret);
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goto edmxdinit;
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}
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/* Attach the frontend */
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as102_dev->dvb_fe = dvb_attach(as102_attach, as102_dev->name,
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&as102_fe_ops,
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&as102_dev->bus_adap,
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as102_dev->elna_cfg);
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if (!as102_dev->dvb_fe) {
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ret = -ENODEV;
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dev_err(dev, "%s: as102_attach() failed: %d",
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__func__, ret);
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goto efereg;
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}
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ret = dvb_register_frontend(&as102_dev->dvb_adap, as102_dev->dvb_fe);
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if (ret < 0) {
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dev_err(dev, "%s: as102_dvb_register_frontend() failed: %d",
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__func__, ret);
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goto efereg;
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}
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/* init bus mutex for token locking */
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mutex_init(&as102_dev->bus_adap.lock);
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/* init start / stop stream mutex */
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mutex_init(&as102_dev->sem);
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/*
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* try to load as102 firmware. If firmware upload failed, we'll be
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* able to upload it later.
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*/
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if (fw_upload)
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try_then_request_module(as102_fw_upload(&as102_dev->bus_adap),
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"firmware_class");
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pr_info("Registered device %s", as102_dev->name);
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return 0;
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efereg:
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dvb_dmxdev_release(&as102_dev->dvb_dmxdev);
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edmxdinit:
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dvb_dmx_release(&as102_dev->dvb_dmx);
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edmxinit:
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dvb_unregister_adapter(&as102_dev->dvb_adap);
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return ret;
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}
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void as102_dvb_unregister(struct as102_dev_t *as102_dev)
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{
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/* unregister as102 frontend */
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dvb_unregister_frontend(as102_dev->dvb_fe);
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/* detach frontend */
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dvb_frontend_detach(as102_dev->dvb_fe);
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/* unregister demux device */
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dvb_dmxdev_release(&as102_dev->dvb_dmxdev);
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dvb_dmx_release(&as102_dev->dvb_dmx);
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/* unregister dvb adapter */
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dvb_unregister_adapter(&as102_dev->dvb_adap);
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pr_info("Unregistered device %s", as102_dev->name);
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}
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module_usb_driver(as102_usb_driver);
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/* modinfo details */
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MODULE_DESCRIPTION(DRIVER_FULL_NAME);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Pierrick Hascoet <pierrick.hascoet@abilis.com>");
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