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path: root/drivers/media/dvb/dvb-usb/digitv.c
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Diffstat (limited to 'drivers/media/dvb/dvb-usb/digitv.c')
-rw-r--r--drivers/media/dvb/dvb-usb/digitv.c261
1 files changed, 261 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-usb/digitv.c b/drivers/media/dvb/dvb-usb/digitv.c
new file mode 100644
index 00000000000..9a676afc1d6
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/digitv.c
@@ -0,0 +1,261 @@
+/* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0
+ * receiver
+ *
+ * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@desy.de)
+ *
+ * partly based on the SDK published by Nebula Electronics
+ *
+ * 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, version 2.
+ *
+ * see Documentation/dvb/README.dvb-usb for more information
+ */
+#include "digitv.h"
+
+#include "mt352.h"
+#include "nxt6000.h"
+
+/* debug */
+int dvb_usb_digitv_debug;
+module_param_named(debug,dvb_usb_digitv_debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
+
+static int digitv_ctrl_msg(struct dvb_usb_device *d,
+ u8 cmd, u8 vv, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
+{
+ int wo = (rbuf == NULL || rlen == 0); /* write-only */
+ u8 sndbuf[7],rcvbuf[7];
+ memset(sndbuf,0,7); memset(rcvbuf,0,7);
+
+ sndbuf[0] = cmd;
+ sndbuf[1] = vv;
+ sndbuf[2] = wo ? wlen : rlen;
+
+ if (!wo) {
+ memcpy(&sndbuf[3],wbuf,wlen);
+ dvb_usb_generic_write(d,sndbuf,7);
+ } else {
+ dvb_usb_generic_rw(d,sndbuf,7,rcvbuf,7,10);
+ memcpy(rbuf,&rcvbuf[3],rlen);
+ }
+ return 0;
+}
+
+/* I2C */
+static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
+{
+ struct dvb_usb_device *d = i2c_get_adapdata(adap);
+ int i;
+
+ if (down_interruptible(&d->i2c_sem) < 0)
+ return -EAGAIN;
+
+ if (num > 2)
+ warn("more than 2 i2c messages at a time is not handled yet. TODO.");
+
+ for (i = 0; i < num; i++) {
+ /* write/read request */
+ if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
+ if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0,
+ msg[i+1].buf,msg[i+1].len) < 0)
+ break;
+ i++;
+ } else
+ if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0],
+ &msg[i].buf[1],msg[i].len-1,NULL,0) < 0)
+ break;
+ }
+
+ up(&d->i2c_sem);
+ return i;
+}
+
+static u32 digitv_i2c_func(struct i2c_adapter *adapter)
+{
+ return I2C_FUNC_I2C;
+}
+
+static struct i2c_algorithm digitv_i2c_algo = {
+ .name = "Nebula DigiTV USB I2C algorithm",
+ .id = I2C_ALGO_BIT,
+ .master_xfer = digitv_i2c_xfer,
+ .functionality = digitv_i2c_func,
+};
+
+/* Callbacks for DVB USB */
+static int digitv_identify_state (struct usb_device *udev, struct
+ dvb_usb_properties *props, struct dvb_usb_device_description **desc,
+ int *cold)
+{
+ *cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
+ return 0;
+}
+
+static int digitv_mt352_demod_init(struct dvb_frontend *fe)
+{
+ static u8 reset_buf[] = { 0x89, 0x38, 0x8a, 0x2d, 0x50, 0x80 };
+ static u8 init_buf[] = { 0x68, 0xa0, 0x8e, 0x40, 0x53, 0x50,
+ 0x67, 0x20, 0x7d, 0x01, 0x7c, 0x00, 0x7a, 0x00,
+ 0x79, 0x20, 0x57, 0x05, 0x56, 0x31, 0x88, 0x0f,
+ 0x75, 0x32 };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2)
+ mt352_write(fe, &reset_buf[i], 2);
+
+ msleep(1);
+
+ for (i = 0; i < ARRAY_SIZE(init_buf); i += 2)
+ mt352_write(fe, &init_buf[i], 2);
+
+ return 0;
+}
+
+static struct mt352_config digitv_mt352_config = {
+ .demod_address = 0x0, /* ignored by the digitv anyway */
+ .demod_init = digitv_mt352_demod_init,
+ .pll_set = dvb_usb_pll_set,
+};
+
+static struct nxt6000_config digitv_nxt6000_config = {
+ .demod_address = 0x0, /* ignored by the digitv anyway */
+ .clock_inversion = 0x0,
+
+ .pll_init = NULL,
+ .pll_set = NULL,
+};
+
+static int digitv_frontend_attach(struct dvb_usb_device *d)
+{
+ if ((d->fe = mt352_attach(&digitv_mt352_config, &d->i2c_adap)) != NULL)
+ return 0;
+ if ((d->fe = nxt6000_attach(&digitv_nxt6000_config, &d->i2c_adap)) != NULL) {
+
+ warn("nxt6000 support is not done yet, in fact you are one of the first "
+ "person who wants to use this device in Linux. Please report to "
+ "linux-dvb@linuxtv.org");
+
+ return 0;
+ }
+ return -EIO;
+}
+
+static int digitv_tuner_attach(struct dvb_usb_device *d)
+{
+ d->pll_addr = 0x60;
+ d->pll_desc = &dvb_pll_tded4;
+ return 0;
+}
+
+static struct dvb_usb_rc_key digitv_rc_keys[] = {
+ { 0x00, 0x16, KEY_POWER }, /* dummy key */
+};
+
+/* TODO is it really the NEC protocol ? */
+int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
+{
+ u8 key[5];
+
+ digitv_ctrl_msg(d,USB_READ_REMOTE,0,NULL,0,&key[1],4);
+ /* TODO state, maybe it is VV ? */
+ if (key[1] != 0)
+ key[0] = 0x01; /* if something is inside the buffer, simulate key press */
+
+ /* call the universal NEC remote processor, to find out the key's state and event */
+ dvb_usb_nec_rc_key_to_event(d,key,event,state);
+ if (key[0] != 0)
+ deb_rc("key: %x %x %x %x %x\n",key[0],key[1],key[2],key[3],key[4]);
+ return 0;
+}
+
+/* DVB USB Driver stuff */
+static struct dvb_usb_properties digitv_properties;
+
+static int digitv_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ return dvb_usb_device_init(intf,&digitv_properties,THIS_MODULE);
+}
+
+static struct usb_device_id digitv_table [] = {
+ { USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) },
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE (usb, digitv_table);
+
+static struct dvb_usb_properties digitv_properties = {
+ .caps = DVB_USB_IS_AN_I2C_ADAPTER,
+
+ .usb_ctrl = CYPRESS_FX2,
+ .firmware = "dvb-usb-digitv-01.fw",
+
+ .size_of_priv = 0,
+
+ .frontend_attach = digitv_frontend_attach,
+ .tuner_attach = digitv_tuner_attach,
+
+ .rc_interval = 1000,
+ .rc_key_map = digitv_rc_keys,
+ .rc_key_map_size = ARRAY_SIZE(digitv_rc_keys),
+ .rc_query = digitv_rc_query,
+
+ .identify_state = digitv_identify_state,
+
+ .i2c_algo = &digitv_i2c_algo,
+
+ .generic_bulk_ctrl_endpoint = 0x01,
+ /* parameter for the MPEG2-data transfer */
+ .urb = {
+ .type = DVB_USB_BULK,
+ .count = 7,
+ .endpoint = 0x02,
+ .u = {
+ .bulk = {
+ .buffersize = 4096,
+ }
+ }
+ },
+
+ .num_device_descs = 1,
+ .devices = {
+ { "Nebula Electronics uDigiTV DVB-T USB2.0)",
+ { &digitv_table[0], NULL },
+ { NULL },
+ },
+ }
+};
+
+static struct usb_driver digitv_driver = {
+ .owner = THIS_MODULE,
+ .name = "dvb_usb_digitv",
+ .probe = digitv_probe,
+ .disconnect = dvb_usb_device_exit,
+ .id_table = digitv_table,
+};
+
+/* module stuff */
+static int __init digitv_module_init(void)
+{
+ int result;
+ if ((result = usb_register(&digitv_driver))) {
+ err("usb_register failed. Error number %d",result);
+ return result;
+ }
+
+ return 0;
+}
+
+static void __exit digitv_module_exit(void)
+{
+ /* deregister this driver from the USB subsystem */
+ usb_deregister(&digitv_driver);
+}
+
+module_init (digitv_module_init);
+module_exit (digitv_module_exit);
+
+MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
+MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");
+MODULE_VERSION("1.0-alpha");
+MODULE_LICENSE("GPL");