diff options
Diffstat (limited to 'drivers/staging/media/as102/as102_drv.c')
| -rw-r--r-- | drivers/staging/media/as102/as102_drv.c | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/drivers/staging/media/as102/as102_drv.c b/drivers/staging/media/as102/as102_drv.c new file mode 100644 index 000000000000..d335c7d6fa0f --- /dev/null +++ b/drivers/staging/media/as102/as102_drv.c @@ -0,0 +1,351 @@ +/* + * 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. + * + * 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/errno.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/mm.h> +#include <linux/kref.h> +#include <asm/uaccess.h> +#include <linux/usb.h> + +/* header file for Usb device driver*/ +#include "as102_drv.h" +#include "as102_fw.h" +#include "dvbdev.h" + +int debug; +module_param_named(debug, debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off debugging (default: off)"); + +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)"); + +#ifdef DVB_DEFINE_MOD_OPT_ADAPTER_NR +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); +#endif + +static void as102_stop_stream(struct as102_dev_t *dev) +{ + struct as102_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) + dprintk(debug, "as10x_cmd_stop_streaming failed\n"); + + mutex_unlock(&dev->bus_adap.lock); + } +} + +static int as102_start_stream(struct as102_dev_t *dev) +{ + struct as102_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 as102_bus_adapter_t *bus_adap = &dev->bus_adap; + int ret = -EFAULT; + + ENTER(); + + if (mutex_lock_interruptible(&dev->bus_adap.lock)) { + dprintk(debug, "mutex_lock_interruptible(lock) failed !\n"); + return -EBUSY; + } + + switch (onoff) { + case 0: + ret = as10x_cmd_del_PID_filter(bus_adap, (uint16_t) pid); + dprintk(debug, "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); + dprintk(debug, "ADD_PID_FILTER([%02d -> %02d], 0x%04x) ret = %d\n", + index, filter.idx, filter.pid, ret); + break; + } + } + + mutex_unlock(&dev->bus_adap.lock); + + LEAVE(); + 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; + + ENTER(); + + 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); + LEAVE(); + 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; + + ENTER(); + + 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); + LEAVE(); + return 0; +} + +int as102_dvb_register(struct as102_dev_t *as102_dev) +{ + int ret = 0; + ENTER(); + + ret = dvb_register_adapter(&as102_dev->dvb_adap, + as102_dev->name, + THIS_MODULE, +#if defined(CONFIG_AS102_USB) + &as102_dev->bus_adap.usb_dev->dev +#elif defined(CONFIG_AS102_SPI) + &as102_dev->bus_adap.spi_dev->dev +#else +#error >>> dvb_register_adapter <<< +#endif +#ifdef DVB_DEFINE_MOD_OPT_ADAPTER_NR + , adapter_nr +#endif + ); + if (ret < 0) { + err("%s: dvb_register_adapter() failed (errno = %d)", + __func__, ret); + goto failed; + } + + 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) { + err("%s: dvb_dmx_init() failed (errno = %d)", __func__, ret); + goto failed; + } + + ret = dvb_dmxdev_init(&as102_dev->dvb_dmxdev, &as102_dev->dvb_adap); + if (ret < 0) { + err("%s: dvb_dmxdev_init() failed (errno = %d)", __func__, + ret); + goto failed; + } + + ret = as102_dvb_register_fe(as102_dev, &as102_dev->dvb_fe); + if (ret < 0) { + err("%s: as102_dvb_register_frontend() failed (errno = %d)", + __func__, ret); + goto failed; + } + + /* init bus mutex for token locking */ + mutex_init(&as102_dev->bus_adap.lock); + + /* init start / stop stream mutex */ + mutex_init(&as102_dev->sem); + +#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE) + /* + * 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"); +#endif + +failed: + LEAVE(); + /* FIXME: free dvb_XXX */ + return ret; +} + +void as102_dvb_unregister(struct as102_dev_t *as102_dev) +{ + ENTER(); + + /* unregister as102 frontend */ + as102_dvb_unregister_fe(&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); + + LEAVE(); +} + +static int __init as102_driver_init(void) +{ + int ret = 0; + + ENTER(); + + /* register this driver with the low level subsystem */ +#if defined(CONFIG_AS102_USB) + ret = usb_register(&as102_usb_driver); + if (ret) + err("usb_register failed (ret = %d)", ret); +#endif +#if defined(CONFIG_AS102_SPI) + ret = spi_register_driver(&as102_spi_driver); + if (ret) + printk(KERN_ERR "spi_register failed (ret = %d)", ret); +#endif + + LEAVE(); + return ret; +} + +/* + * Mandatory function : Adds a special section to the module indicating + * where initialisation function is defined + */ +module_init(as102_driver_init); + +/** + * as102_driver_exit - as102 driver exit point + * + * This function is called when device has to be removed. + */ +static void __exit as102_driver_exit(void) +{ + ENTER(); + /* deregister this driver with the low level bus subsystem */ +#if defined(CONFIG_AS102_USB) + usb_deregister(&as102_usb_driver); +#endif +#if defined(CONFIG_AS102_SPI) + spi_unregister_driver(&as102_spi_driver); +#endif + LEAVE(); +} + +/* + * required function for unload: Adds a special section to the module + * indicating where unload function is defined + */ +module_exit(as102_driver_exit); +/* modinfo details */ +MODULE_DESCRIPTION(DRIVER_FULL_NAME); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Pierrick Hascoet <pierrick.hascoet@abilis.com>"); + +/* EOF - vim: set textwidth=80 ts=8 sw=8 sts=8 noet: */ |