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 000000000000..f89d01755eab
--- /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");