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path: root/drivers/media/usb/as102/as102_drv.c
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Diffstat (limited to 'drivers/media/usb/as102/as102_drv.c')
-rw-r--r--drivers/media/usb/as102/as102_drv.c401
1 files changed, 401 insertions, 0 deletions
diff --git a/drivers/media/usb/as102/as102_drv.c b/drivers/media/usb/as102/as102_drv.c
new file mode 100644
index 0000000..8be1474
--- /dev/null
+++ b/drivers/media/usb/as102/as102_drv.c
@@ -0,0 +1,401 @@
+/*
+ * 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) {
+ 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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