V4L/DVB (8734): Initial support for AME DTV-5100 USB2.0 DVB-T

Basic support for AME DTV-5100 USB2.0 DVB-T using the qt1010 tuner and a dummy frontend.

Signed-off-by: Antoine Jacquet <royale@zerezo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 217 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/dtv5100.c b/drivers/media/dvb/dvb-usb/dtv5100.c
new file mode 100644
index 00000000000..f89d01755ea
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/dtv5100.c
@@ -0,0 +1,217 @@
+/*
+ * DVB USB Linux driver for AME DTV-5100 USB2.0 DVB-T
+ *
+ * Copyright (C) 2008  Antoine Jacquet <royale@zerezo.com>
+ * http://royale.zerezo.com/dtv5100/
+ *
+ * Inspired by gl861.c and au6610.c drivers
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "dtv5100.h"
+#include "qt1010.h"
+
+/* debug */
+static int dvb_usb_dtv5100_debug;
+module_param_named(debug, dvb_usb_dtv5100_debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+static int dtv5100_read_reg(struct dvb_usb_device *d, u8 addr, u8 reg, u8 *value)
+{
+	return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
+			       DTV5100_I2C_READ, USB_TYPE_VENDOR|USB_DIR_IN,
+			       0, (addr << 8) + reg, value, 1,
+			       DTV5100_USB_TIMEOUT);
+}
+
+static int dtv5100_write_reg(struct dvb_usb_device *d, u8 addr, u8 reg, u8 value)
+{
+	return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
+			       DTV5100_I2C_WRITE, USB_TYPE_VENDOR|USB_DIR_OUT,
+			       value, (addr << 8) + reg, NULL, 0,
+			       DTV5100_USB_TIMEOUT);
+}
+
+/* I2C */
+static int dtv5100_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
+			    int num)
+{
+	struct dvb_usb_device *d = i2c_get_adapdata(adap);
+	int i;
+
+	if (num > 2)
+		return -EINVAL;
+
+	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+		return -EAGAIN;
+
+	for (i = 0; i < num; i++) {
+		if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
+			/* write/read request, 2 messages
+			 *	msg = {
+			 *		{ reg },
+			 *		{ val },
+			 *	}
+			 */
+			if (dtv5100_read_reg(d, msg[i].addr, msg[i].buf[0], msg[i+1].buf) < 0)
+				break;
+			i++;
+		} else {
+			/* write request, 1 message
+			 *	msg = {
+			 *		{ reg, val },
+			 *	}
+			 */
+			if (dtv5100_write_reg(d, msg[i].addr, msg[i].buf[0], msg[i].buf[1]) < 0)
+				break;
+		}
+	}
+
+	mutex_unlock(&d->i2c_mutex);
+	return i;
+}
+
+static u32 dtv5100_i2c_func(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_I2C;
+}
+
+static struct i2c_algorithm dtv5100_i2c_algo = {
+	.master_xfer   = dtv5100_i2c_xfer,
+	.functionality = dtv5100_i2c_func,
+};
+
+/* Callbacks for DVB USB */
+static int dtv5100_frontend_attach(struct dvb_usb_adapter *adap)
+{
+	adap->fe = dtv5100_fe_attach();
+	return 0;
+}
+
+static struct qt1010_config dtv5100_qt1010_config = {
+	.i2c_address = 0xc4
+};
+
+static int dtv5100_tuner_attach(struct dvb_usb_adapter *adap)
+{
+	return dvb_attach(qt1010_attach,
+			  adap->fe, &adap->dev->i2c_adap,
+			  &dtv5100_qt1010_config) == NULL ? -ENODEV : 0;
+}
+
+/* DVB USB Driver stuff */
+static struct dvb_usb_device_properties dtv5100_properties;
+
+static int dtv5100_probe(struct usb_interface *intf,
+			 const struct usb_device_id *id)
+{
+	int i, ret;
+	struct usb_device *udev = interface_to_usbdev(intf);
+
+	ret = dvb_usb_device_init(intf, &dtv5100_properties,
+				  THIS_MODULE, NULL, adapter_nr);
+	if (ret)
+		return ret;
+
+	/* initialize frontend & non qt1010 part? */
+	for (i = 0; dtv5100_init[i].request; i++)
+	{
+		ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+				      dtv5100_init[i].request,
+				      USB_TYPE_VENDOR|USB_DIR_OUT,
+				      dtv5100_init[i].value,
+				      dtv5100_init[i].index, NULL, 0,
+				      DTV5100_USB_TIMEOUT);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static struct usb_device_id dtv5100_table [] = {
+	{ USB_DEVICE(0x06be, 0xa232) },
+	{ }		/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, dtv5100_table);
+
+static struct dvb_usb_device_properties dtv5100_properties = {
+	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
+	.usb_ctrl = DEVICE_SPECIFIC,
+
+	.size_of_priv = 0,
+
+	.num_adapters = 1,
+	.adapter = {{
+		.frontend_attach = dtv5100_frontend_attach,
+		.tuner_attach    = dtv5100_tuner_attach,
+
+		.stream = {
+			.type = USB_BULK,
+			.count = 8,
+			.endpoint = 0x82,
+			.u = {
+				.bulk = {
+					.buffersize = 4096,
+				}
+			}
+		},
+	} },
+
+	.i2c_algo = &dtv5100_i2c_algo,
+
+	.num_device_descs = 1,
+	.devices = {
+		{
+			.name = "AME DTV-5100 USB2.0 DVB-T",
+			.cold_ids = { NULL },
+			.warm_ids = { &dtv5100_table[0], NULL },
+		},
+	}
+};
+
+static struct usb_driver dtv5100_driver = {
+	.name		= "dvb_usb_dtv5100",
+	.probe		= dtv5100_probe,
+	.disconnect	= dvb_usb_device_exit,
+	.id_table	= dtv5100_table,
+};
+
+/* module stuff */
+static int __init dtv5100_module_init(void)
+{
+	int ret;
+
+	ret = usb_register(&dtv5100_driver);
+	if (ret)
+		err("usb_register failed. Error number %d", ret);
+
+	return ret;
+}
+
+static void __exit dtv5100_module_exit(void)
+{
+	/* deregister this driver from the USB subsystem */
+	usb_deregister(&dtv5100_driver);
+}
+
+module_init(dtv5100_module_init);
+module_exit(dtv5100_module_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");