Some time ago I had a brief correspondence on here with Antii
about adding support for the MT2060 tuner to the DPosh driver( there's
recently been a load of these on sale in several places for 10 GBP
ish). I had a go at hacking something together, which although
definitely poorly written, did appear to work. However, my signal at
home is currently just not quite good enough to test it properly, so I
let the matter rest for the moment.
Then I was contacted by a guy who'd bought the same stick & been
following my posts - he tried it & is definitely receiving TV
stations(with plenty of room for improvement), so it seems that its
worth going further with it.
I've attached a diff of m920x.c - I'd like some help with a)the
correct mechanism for detecting which tuner chip is present (i.e.
QT1010/MT2060) , b) what to tweak to improve output quality & c)
whether my whole approach is wrong or what?- I have no experience of
driver programming or C, though I know a little about C++ app
development. Hugh (the guy with another DPosh stick) will be able to
test any changes as will I (if I can improve my Freeview signal).
Regards Andrew Websdale
--- ../v4l-dvb.orig/linux/drivers/media/dvb/dvb-usb/m920x.c 2008-09-24 23:36:47.000000000 +0100
+++ linux/drivers/media/dvb/dvb-usb/m920x.c 2008-07-04 23:17:19.000000000 +0100
@@ -10,7 +10,7 @@
*/
#include "m920x.h"
-
+#include "mt2060.h"
#include "mt352.h"
#include "mt352_priv.h"
#include "qt1010.h"
@@ -20,6 +20,7 @@
/* debug */
static int dvb_usb_m920x_debug;
+static bool bdposh_warm = false;
module_param_named(debug,dvb_usb_m920x_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
@@ -477,6 +478,10 @@
.i2c_address = 0x62
};
+static struct mt2060_config m920x_mt2060_config = {
+ .i2c_address = 0x60
+};
+
/* Callbacks for DVB USB */
static int m920x_mt352_frontend_attach(struct dvb_usb_adapter *adap)
{
@@ -544,6 +549,19 @@
return 0;
}
+static int m920x_mt2060_tuner_attach(struct dvb_usb_adapter *adap)
+{
+ u16 if1;
+
+ deb("%s\n",__func__);
+
+ if1 = 1220;
+
+ if (dvb_attach(mt2060_attach, adap->fe, &adap->dev->i2c_adap, &m920x_mt2060_config, if1) == NULL)
+ return -ENODEV;
+
+ return 0;
+}
/* device-specific initialization */
static struct m920x_inits megasky_rc_init [] = {
{ M9206_RC_INIT2, 0xa8 },
@@ -604,7 +622,8 @@
static struct dvb_usb_device_properties megasky_properties;
static struct dvb_usb_device_properties digivox_mini_ii_properties;
static struct dvb_usb_device_properties tvwalkertwin_properties;
-static struct dvb_usb_device_properties dposh_properties;
+static struct dvb_usb_device_properties dposh_properties;//qt1010
+static struct dvb_usb_device_properties dposh_mt_properties;//for mt2060
static int m920x_probe(struct usb_interface *intf,
const struct usb_device_id *id)
@@ -642,13 +661,25 @@
rc_init_seq = tvwalkertwin_rc_init;
goto found;
}
-
- ret = dvb_usb_device_init(intf, &dposh_properties,
+
+ ret = dvb_usb_device_init(intf, &dposh_mt_properties,
THIS_MODULE, &d, adapter_nr);
if (ret == 0) {
/* Remote controller not supported yet. */
+ bdposh_warm = true;
goto found;
}
+
+ if (bdposh_warm != true){
+ ret = dvb_usb_device_init(intf, &dposh_properties,
+ THIS_MODULE, &d, adapter_nr);
+ if (ret == 0) {
+ /* Remote controller not supported yet. */
+ goto found;
+ }
+ }
+
+
return ret;
} else {
@@ -886,14 +917,59 @@
.num_device_descs = 1,
.devices = {
- { .name = "Dposh DVB-T USB2.0",
+ { .name = "Dposh(qt1010 tuner) DVB-T USB2.0",
+ .cold_ids = { &m920x_table[4], NULL },
+ .warm_ids = { &m920x_table[5], NULL },
+ },
+ }
+};
+
+
+static struct dvb_usb_device_properties dposh_mt_properties = {
+ .caps = DVB_USB_IS_AN_I2C_ADAPTER,
+
+ .usb_ctrl = DEVICE_SPECIFIC,
+ .firmware = "dvb-usb-dposh-01.fw",
+ .download_firmware = m920x_firmware_download,
+
+ .size_of_priv = sizeof(struct m920x_state),
+
+ .identify_state = m920x_identify_state,
+ .num_adapters = 1,
+ .adapter = {{
+
+ .frontend_attach = m920x_mt352_frontend_attach,
+ .tuner_attach = m920x_mt2060_tuner_attach,
+
+ .stream = {
+ .type = USB_BULK,
+ .count = 7,
+ .endpoint = 0x81,
+ .u = {
+ .bulk = {
+ .buffersize = 512,
+ }
+ }
+ },
+ }},
+ .i2c_algo = &m920x_i2c_algo,
+
+ .num_device_descs = 1,
+ .devices = {
+ { .name = "Dposh(mt2060 tuner) DVB-T USB2.0",
.cold_ids = { &m920x_table[4], NULL },
.warm_ids = { &m920x_table[5], NULL },
},
}
+
+
};
+
static struct usb_driver m920x_driver = {
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,15)
+ .owner = THIS_MODULE,
+#endif
.name = "dvb_usb_m920x",
.probe = m920x_probe,
.disconnect = dvb_usb_device_exit,
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