Initial import

1 files changed, 660 insertions, 0 deletions

diff --git a/drivers/media/usb/au0828/au0828-dvb.c b/drivers/media/usb/au0828/au0828-dvb.c
new file mode 100644
index 000000000..c267d76f5
--- /dev/null
+++ b/drivers/media/usb/au0828/au0828-dvb.c
@@ -0,0 +1,660 @@
+/*
+ *  Driver for the Auvitek USB bridge
+ *
+ *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
+ *
+ *  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 "au0828.h"
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <media/v4l2-common.h>
+#include <media/tuner.h>
+
+#include "au8522.h"
+#include "xc5000.h"
+#include "mxl5007t.h"
+#include "tda18271.h"
+
+static int preallocate_big_buffers;
+module_param_named(preallocate_big_buffers, preallocate_big_buffers, int, 0644);
+MODULE_PARM_DESC(preallocate_big_buffers, "Preallocate the larger transfer buffers at module load time");
+
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+#define _AU0828_BULKPIPE 0x83
+#define _BULKPIPESIZE 0xe522
+
+static u8 hauppauge_hvr950q_led_states[] = {
+	0x00, /* off */
+	0x02, /* yellow */
+	0x04, /* green */
+};
+
+static struct au8522_led_config hauppauge_hvr950q_led_cfg = {
+	.gpio_output = 0x00e0,
+	.gpio_output_enable  = 0x6006,
+	.gpio_output_disable = 0x0660,
+
+	.gpio_leds = 0x00e2,
+	.led_states  = hauppauge_hvr950q_led_states,
+	.num_led_states = sizeof(hauppauge_hvr950q_led_states),
+
+	.vsb8_strong   = 20 /* dB */ * 10,
+	.qam64_strong  = 25 /* dB */ * 10,
+	.qam256_strong = 32 /* dB */ * 10,
+};
+
+static struct au8522_config hauppauge_hvr950q_config = {
+	.demod_address = 0x8e >> 1,
+	.status_mode   = AU8522_DEMODLOCKING,
+	.qam_if        = AU8522_IF_6MHZ,
+	.vsb_if        = AU8522_IF_6MHZ,
+	.led_cfg       = &hauppauge_hvr950q_led_cfg,
+};
+
+static struct au8522_config fusionhdtv7usb_config = {
+	.demod_address = 0x8e >> 1,
+	.status_mode   = AU8522_DEMODLOCKING,
+	.qam_if        = AU8522_IF_6MHZ,
+	.vsb_if        = AU8522_IF_6MHZ,
+};
+
+static struct au8522_config hauppauge_woodbury_config = {
+	.demod_address = 0x8e >> 1,
+	.status_mode   = AU8522_DEMODLOCKING,
+	.qam_if        = AU8522_IF_4MHZ,
+	.vsb_if        = AU8522_IF_3_25MHZ,
+};
+
+static struct xc5000_config hauppauge_xc5000a_config = {
+	.i2c_address      = 0x61,
+	.if_khz           = 6000,
+	.chip_id          = XC5000A,
+	.output_amp       = 0x8f,
+};
+
+static struct xc5000_config hauppauge_xc5000c_config = {
+	.i2c_address      = 0x61,
+	.if_khz           = 6000,
+	.chip_id          = XC5000C,
+	.output_amp       = 0x8f,
+};
+
+static struct mxl5007t_config mxl5007t_hvr950q_config = {
+	.xtal_freq_hz = MxL_XTAL_24_MHZ,
+	.if_freq_hz = MxL_IF_6_MHZ,
+};
+
+static struct tda18271_config hauppauge_woodbury_tunerconfig = {
+	.gate    = TDA18271_GATE_DIGITAL,
+};
+
+static void au0828_restart_dvb_streaming(struct work_struct *work);
+
+/*-------------------------------------------------------------------*/
+static void urb_completion(struct urb *purb)
+{
+	struct au0828_dev *dev = purb->context;
+	int ptype = usb_pipetype(purb->pipe);
+	unsigned char *ptr;
+
+	dprintk(2, "%s: %d\n", __func__, purb->actual_length);
+
+	if (!dev) {
+		dprintk(2, "%s: no dev!\n", __func__);
+		return;
+	}
+
+	if (!dev->urb_streaming) {
+		dprintk(2, "%s: not streaming!\n", __func__);
+		return;
+	}
+
+	if (ptype != PIPE_BULK) {
+		pr_err("%s: Unsupported URB type %d\n",
+		       __func__, ptype);
+		return;
+	}
+
+	/* See if the stream is corrupted (to work around a hardware
+	   bug where the stream gets misaligned */
+	ptr = purb->transfer_buffer;
+	if (purb->actual_length > 0 && ptr[0] != 0x47) {
+		dprintk(1, "Need to restart streaming %02x len=%d!\n",
+			ptr[0], purb->actual_length);
+		schedule_work(&dev->restart_streaming);
+		return;
+	}
+
+	/* Feed the transport payload into the kernel demux */
+	dvb_dmx_swfilter_packets(&dev->dvb.demux,
+		purb->transfer_buffer, purb->actual_length / 188);
+
+	/* Clean the buffer before we requeue */
+	memset(purb->transfer_buffer, 0, URB_BUFSIZE);
+
+	/* Requeue URB */
+	usb_submit_urb(purb, GFP_ATOMIC);
+}
+
+static int stop_urb_transfer(struct au0828_dev *dev)
+{
+	int i;
+
+	dprintk(2, "%s()\n", __func__);
+
+	if (!dev->urb_streaming)
+		return 0;
+
+	dev->urb_streaming = false;
+	for (i = 0; i < URB_COUNT; i++) {
+		if (dev->urbs[i]) {
+			usb_kill_urb(dev->urbs[i]);
+			if (!preallocate_big_buffers)
+				kfree(dev->urbs[i]->transfer_buffer);
+
+			usb_free_urb(dev->urbs[i]);
+		}
+	}
+
+	return 0;
+}
+
+static int start_urb_transfer(struct au0828_dev *dev)
+{
+	struct urb *purb;
+	int i, ret = -ENOMEM;
+
+	dprintk(2, "%s()\n", __func__);
+
+	if (dev->urb_streaming) {
+		dprintk(2, "%s: bulk xfer already running!\n", __func__);
+		return 0;
+	}
+
+	for (i = 0; i < URB_COUNT; i++) {
+
+		dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
+		if (!dev->urbs[i])
+			goto err;
+
+		purb = dev->urbs[i];
+
+		if (preallocate_big_buffers)
+			purb->transfer_buffer = dev->dig_transfer_buffer[i];
+		else
+			purb->transfer_buffer = kzalloc(URB_BUFSIZE,
+					GFP_KERNEL);
+
+		if (!purb->transfer_buffer) {
+			usb_free_urb(purb);
+			dev->urbs[i] = NULL;
+			pr_err("%s: failed big buffer allocation, err = %d\n",
+			       __func__, ret);
+			goto err;
+		}
+
+		purb->status = -EINPROGRESS;
+		usb_fill_bulk_urb(purb,
+				  dev->usbdev,
+				  usb_rcvbulkpipe(dev->usbdev,
+					_AU0828_BULKPIPE),
+				  purb->transfer_buffer,
+				  URB_BUFSIZE,
+				  urb_completion,
+				  dev);
+
+	}
+
+	for (i = 0; i < URB_COUNT; i++) {
+		ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
+		if (ret != 0) {
+			stop_urb_transfer(dev);
+			pr_err("%s: failed urb submission, err = %d\n",
+			       __func__, ret);
+			return ret;
+		}
+	}
+
+	dev->urb_streaming = true;
+	ret = 0;
+
+err:
+	return ret;
+}
+
+static void au0828_start_transport(struct au0828_dev *dev)
+{
+	au0828_write(dev, 0x608, 0x90);
+	au0828_write(dev, 0x609, 0x72);
+	au0828_write(dev, 0x60a, 0x71);
+	au0828_write(dev, 0x60b, 0x01);
+
+}
+
+static void au0828_stop_transport(struct au0828_dev *dev, int full_stop)
+{
+	if (full_stop) {
+		au0828_write(dev, 0x608, 0x00);
+		au0828_write(dev, 0x609, 0x00);
+		au0828_write(dev, 0x60a, 0x00);
+	}
+	au0828_write(dev, 0x60b, 0x00);
+}
+
+static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
+{
+	struct dvb_demux *demux = feed->demux;
+	struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
+	struct au0828_dvb *dvb = &dev->dvb;
+	int ret = 0;
+
+	dprintk(1, "%s()\n", __func__);
+
+	if (!demux->dmx.frontend)
+		return -EINVAL;
+
+	if (dvb->frontend) {
+		mutex_lock(&dvb->lock);
+		dvb->start_count++;
+		dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__,
+			dvb->start_count, dvb->stop_count);
+		if (dvb->feeding++ == 0) {
+			/* Start transport */
+			au0828_start_transport(dev);
+			ret = start_urb_transfer(dev);
+			if (ret < 0) {
+				au0828_stop_transport(dev, 0);
+				dvb->feeding--;	/* We ran out of memory... */
+			}
+		}
+		mutex_unlock(&dvb->lock);
+	}
+
+	return ret;
+}
+
+static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
+{
+	struct dvb_demux *demux = feed->demux;
+	struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
+	struct au0828_dvb *dvb = &dev->dvb;
+	int ret = 0;
+
+	dprintk(1, "%s()\n", __func__);
+
+	if (dvb->frontend) {
+		cancel_work_sync(&dev->restart_streaming);
+
+		mutex_lock(&dvb->lock);
+		dvb->stop_count++;
+		dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__,
+			dvb->start_count, dvb->stop_count);
+		if (dvb->feeding > 0) {
+			dvb->feeding--;
+			if (dvb->feeding == 0) {
+				/* Stop transport */
+				ret = stop_urb_transfer(dev);
+				au0828_stop_transport(dev, 0);
+			}
+		}
+		mutex_unlock(&dvb->lock);
+	}
+
+	return ret;
+}
+
+static void au0828_restart_dvb_streaming(struct work_struct *work)
+{
+	struct au0828_dev *dev = container_of(work, struct au0828_dev,
+					      restart_streaming);
+	struct au0828_dvb *dvb = &dev->dvb;
+
+	if (!dev->urb_streaming)
+		return;
+
+	dprintk(1, "Restarting streaming...!\n");
+
+	mutex_lock(&dvb->lock);
+
+	/* Stop transport */
+	stop_urb_transfer(dev);
+	au0828_stop_transport(dev, 1);
+
+	/* Start transport */
+	au0828_start_transport(dev);
+	start_urb_transfer(dev);
+
+	mutex_unlock(&dvb->lock);
+}
+
+static int au0828_set_frontend(struct dvb_frontend *fe)
+{
+	struct au0828_dev *dev = fe->dvb->priv;
+	struct au0828_dvb *dvb = &dev->dvb;
+	int ret, was_streaming;
+
+	mutex_lock(&dvb->lock);
+	was_streaming = dev->urb_streaming;
+	if (was_streaming) {
+		au0828_stop_transport(dev, 1);
+
+		/*
+		 * We can't hold a mutex here, as the restart_streaming
+		 * kthread may also hold it.
+		 */
+		mutex_unlock(&dvb->lock);
+		cancel_work_sync(&dev->restart_streaming);
+		mutex_lock(&dvb->lock);
+
+		stop_urb_transfer(dev);
+	}
+	mutex_unlock(&dvb->lock);
+
+	ret = dvb->set_frontend(fe);
+
+	if (was_streaming) {
+		mutex_lock(&dvb->lock);
+		au0828_start_transport(dev);
+		start_urb_transfer(dev);
+		mutex_unlock(&dvb->lock);
+	}
+
+	return ret;
+}
+
+static int dvb_register(struct au0828_dev *dev)
+{
+	struct au0828_dvb *dvb = &dev->dvb;
+	int result;
+
+	dprintk(1, "%s()\n", __func__);
+
+	if (preallocate_big_buffers) {
+		int i;
+		for (i = 0; i < URB_COUNT; i++) {
+			dev->dig_transfer_buffer[i] = kzalloc(URB_BUFSIZE,
+					GFP_KERNEL);
+
+			if (!dev->dig_transfer_buffer[i]) {
+				result = -ENOMEM;
+
+				pr_err("failed buffer allocation (errno = %d)\n",
+				       result);
+				goto fail_adapter;
+			}
+		}
+	}
+
+	INIT_WORK(&dev->restart_streaming, au0828_restart_dvb_streaming);
+
+	/* register adapter */
+	result = dvb_register_adapter(&dvb->adapter,
+				      KBUILD_MODNAME, THIS_MODULE,
+				      &dev->usbdev->dev, adapter_nr);
+	if (result < 0) {
+		pr_err("dvb_register_adapter failed (errno = %d)\n",
+		       result);
+		goto fail_adapter;
+	}
+	dvb->adapter.priv = dev;
+
+	/* register frontend */
+	result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
+	if (result < 0) {
+		pr_err("dvb_register_frontend failed (errno = %d)\n",
+		       result);
+		goto fail_frontend;
+	}
+
+	/* Hook dvb frontend */
+	dvb->set_frontend = dvb->frontend->ops.set_frontend;
+	dvb->frontend->ops.set_frontend = au0828_set_frontend;
+
+	/* register demux stuff */
+	dvb->demux.dmx.capabilities =
+		DMX_TS_FILTERING | DMX_SECTION_FILTERING |
+		DMX_MEMORY_BASED_FILTERING;
+	dvb->demux.priv       = dev;
+	dvb->demux.filternum  = 256;
+	dvb->demux.feednum    = 256;
+	dvb->demux.start_feed = au0828_dvb_start_feed;
+	dvb->demux.stop_feed  = au0828_dvb_stop_feed;
+	result = dvb_dmx_init(&dvb->demux);
+	if (result < 0) {
+		pr_err("dvb_dmx_init failed (errno = %d)\n", 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) {
+		pr_err("dvb_dmxdev_init failed (errno = %d)\n", 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) {
+		pr_err("add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
+		       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) {
+		pr_err("add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
+		       result);
+		goto fail_fe_mem;
+	}
+
+	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+	if (result < 0) {
+		pr_err("connect_frontend failed (errno = %d)\n", result);
+		goto fail_fe_conn;
+	}
+
+	/* register network adapter */
+	dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
+
+	dvb->start_count = 0;
+	dvb->stop_count = 0;
+	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:
+
+	if (preallocate_big_buffers) {
+		int i;
+		for (i = 0; i < URB_COUNT; i++)
+			kfree(dev->dig_transfer_buffer[i]);
+	}
+
+	return result;
+}
+
+void au0828_dvb_unregister(struct au0828_dev *dev)
+{
+	struct au0828_dvb *dvb = &dev->dvb;
+
+	dprintk(1, "%s()\n", __func__);
+
+	if (dvb->frontend == NULL)
+		return;
+
+	cancel_work_sync(&dev->restart_streaming);
+
+	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);
+
+	if (preallocate_big_buffers) {
+		int i;
+		for (i = 0; i < URB_COUNT; i++)
+			kfree(dev->dig_transfer_buffer[i]);
+	}
+	dvb->frontend = NULL;
+}
+
+/* All the DVB attach calls go here, this function get's modified
+ * for each new card. No other function in this file needs
+ * to change.
+ */
+int au0828_dvb_register(struct au0828_dev *dev)
+{
+	struct au0828_dvb *dvb = &dev->dvb;
+	int ret;
+
+	dprintk(1, "%s()\n", __func__);
+
+	/* init frontend */
+	switch (dev->boardnr) {
+	case AU0828_BOARD_HAUPPAUGE_HVR850:
+	case AU0828_BOARD_HAUPPAUGE_HVR950Q:
+		dvb->frontend = dvb_attach(au8522_attach,
+				&hauppauge_hvr950q_config,
+				&dev->i2c_adap);
+		if (dvb->frontend != NULL)
+			switch (dev->board.tuner_type) {
+			default:
+			case TUNER_XC5000:
+				dvb_attach(xc5000_attach, dvb->frontend,
+					   &dev->i2c_adap,
+					   &hauppauge_xc5000a_config);
+				break;
+			case TUNER_XC5000C:
+				dvb_attach(xc5000_attach, dvb->frontend,
+					   &dev->i2c_adap,
+					   &hauppauge_xc5000c_config);
+				break;
+			}
+		break;
+	case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL:
+		dvb->frontend = dvb_attach(au8522_attach,
+				&hauppauge_hvr950q_config,
+				&dev->i2c_adap);
+		if (dvb->frontend != NULL)
+			dvb_attach(mxl5007t_attach, dvb->frontend,
+				   &dev->i2c_adap, 0x60,
+				   &mxl5007t_hvr950q_config);
+		break;
+	case AU0828_BOARD_HAUPPAUGE_WOODBURY:
+		dvb->frontend = dvb_attach(au8522_attach,
+				&hauppauge_woodbury_config,
+				&dev->i2c_adap);
+		if (dvb->frontend != NULL)
+			dvb_attach(tda18271_attach, dvb->frontend,
+				   0x60, &dev->i2c_adap,
+				   &hauppauge_woodbury_tunerconfig);
+		break;
+	case AU0828_BOARD_DVICO_FUSIONHDTV7:
+		dvb->frontend = dvb_attach(au8522_attach,
+				&fusionhdtv7usb_config,
+				&dev->i2c_adap);
+		if (dvb->frontend != NULL) {
+			dvb_attach(xc5000_attach, dvb->frontend,
+				&dev->i2c_adap,
+				&hauppauge_xc5000a_config);
+		}
+		break;
+	default:
+		pr_warn("The frontend of your DVB/ATSC card isn't supported yet\n");
+		break;
+	}
+	if (NULL == dvb->frontend) {
+		pr_err("%s() Frontend initialization failed\n",
+		       __func__);
+		return -1;
+	}
+	/* define general-purpose callback pointer */
+	dvb->frontend->callback = au0828_tuner_callback;
+
+	/* register everything */
+	ret = dvb_register(dev);
+	if (ret < 0) {
+		if (dvb->frontend->ops.release)
+			dvb->frontend->ops.release(dvb->frontend);
+		dvb->frontend = NULL;
+		return ret;
+	}
+
+	return 0;
+}
+
+void au0828_dvb_suspend(struct au0828_dev *dev)
+{
+	struct au0828_dvb *dvb = &dev->dvb;
+	int rc;
+
+	if (dvb->frontend) {
+		if (dev->urb_streaming) {
+			cancel_work_sync(&dev->restart_streaming);
+			/* Stop transport */
+			mutex_lock(&dvb->lock);
+			stop_urb_transfer(dev);
+			au0828_stop_transport(dev, 1);
+			mutex_unlock(&dvb->lock);
+			dev->need_urb_start = true;
+		}
+		/* suspend frontend - does tuner and fe to sleep */
+		rc = dvb_frontend_suspend(dvb->frontend);
+		pr_info("au0828_dvb_suspend(): Suspending DVB fe %d\n", rc);
+	}
+}
+
+void au0828_dvb_resume(struct au0828_dev *dev)
+{
+	struct au0828_dvb *dvb = &dev->dvb;
+	int rc;
+
+	if (dvb->frontend) {
+		/* resume frontend - does fe and tuner init */
+		rc = dvb_frontend_resume(dvb->frontend);
+		pr_info("au0828_dvb_resume(): Resuming DVB fe %d\n", rc);
+		if (dev->need_urb_start) {
+			/* Start transport */
+			mutex_lock(&dvb->lock);
+			au0828_start_transport(dev);
+			start_urb_transfer(dev);
+			mutex_unlock(&dvb->lock);
+		}
+	}
+}