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Subject[DVB patch 31/54] usb: cxusb: fixes for new firmware
From: Patrick Boettcher <pb@linuxtv.org>

This patch changes two things:

1) a firmware update made by the vendor, which has to be done in Windows for
now, changes the DVB-data-pipe from isochronous to bulk: it fixes the data
distortions (and thus the video-distortions) in DVB-T mode; there is no
backwards compatibility with the old firmware as it didn't work anyway

2) with the help of Steve Toth some reverse-engineered functionality is now
named correctly, thank you

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>

drivers/media/dvb/dvb-usb/cxusb.c | 64 +++++++++++++-------------------------
drivers/media/dvb/dvb-usb/cxusb.h | 27 ++++++++--------
2 files changed, 37 insertions(+), 54 deletions(-)
--- linux-2.6.13-git4.orig/drivers/media/dvb/dvb-usb/cxusb.c 2005-09-04 22:28:21.000000000 +0200
+++ linux-2.6.13-git4/drivers/media/dvb/dvb-usb/cxusb.c 2005-09-04 22:28:25.000000000 +0200
@@ -48,35 +48,26 @@ static int cxusb_ctrl_msg(struct dvb_usb
return 0;
}

-/* I2C */
-static void cxusb_set_i2c_path(struct dvb_usb_device *d, enum cxusb_i2c_pathes path)
+/* GPIO */
+static void cxusb_gpio_tuner(struct dvb_usb_device *d, int onoff)
{
struct cxusb_state *st = d->priv;
u8 o[2],i;

- if (path == st->cur_i2c_path)
+ if (st->gpio_write_state[GPIO_TUNER] == onoff)
return;

- o[0] = IOCTL_SET_I2C_PATH;
- switch (path) {
- case PATH_CX22702:
- o[1] = 0;
- break;
- case PATH_TUNER_OTHER:
- o[1] = 1;
- break;
- default:
- err("unkown i2c path");
- return;
- }
- cxusb_ctrl_msg(d,CMD_IOCTL,o,2,&i,1);
+ o[0] = GPIO_TUNER;
+ o[1] = onoff;
+ cxusb_ctrl_msg(d,CMD_GPIO_WRITE,o,2,&i,1);

if (i != 0x01)
- deb_info("i2c_path setting failed.\n");
+ deb_info("gpio_write failed.\n");

- st->cur_i2c_path = path;
+ st->gpio_write_state[GPIO_TUNER] = onoff;
}

+/* I2C */
static int cxusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
{
struct dvb_usb_device *d = i2c_get_adapdata(adap);
@@ -92,10 +83,10 @@ static int cxusb_i2c_xfer(struct i2c_ada

switch (msg[i].addr) {
case 0x63:
- cxusb_set_i2c_path(d,PATH_CX22702);
+ cxusb_gpio_tuner(d,0);
break;
default:
- cxusb_set_i2c_path(d,PATH_TUNER_OTHER);
+ cxusb_gpio_tuner(d,1);
break;
}

@@ -149,16 +140,20 @@ static struct i2c_algorithm cxusb_i2c_al

static int cxusb_power_ctrl(struct dvb_usb_device *d, int onoff)
{
- return 0;
+ u8 b = 0;
+ if (onoff)
+ return cxusb_ctrl_msg(d, CMD_POWER_ON, &b, 1, NULL, 0);
+ else
+ return cxusb_ctrl_msg(d, CMD_POWER_OFF, &b, 1, NULL, 0);
}

static int cxusb_streaming_ctrl(struct dvb_usb_device *d, int onoff)
{
u8 buf[2] = { 0x03, 0x00 };
if (onoff)
- cxusb_ctrl_msg(d,0x36, buf, 2, NULL, 0);
+ cxusb_ctrl_msg(d,CMD_STREAMING_ON, buf, 2, NULL, 0);
else
- cxusb_ctrl_msg(d,0x37, NULL, 0, NULL, 0);
+ cxusb_ctrl_msg(d,CMD_STREAMING_OFF, NULL, 0, NULL, 0);

return 0;
}
@@ -184,22 +179,11 @@ static int cxusb_tuner_attach(struct dvb

static int cxusb_frontend_attach(struct dvb_usb_device *d)
{
- u8 buf[2] = { 0x03, 0x00 };
- u8 b = 0;
-
- if (usb_set_interface(d->udev,0,0) < 0)
- err("set interface to alts=0 failed");
-
- cxusb_ctrl_msg(d,0xde,&b,0,NULL,0);
- cxusb_set_i2c_path(d,PATH_TUNER_OTHER);
- cxusb_ctrl_msg(d,CMD_POWER_OFF, NULL, 0, &b, 1);
-
+ u8 b;
if (usb_set_interface(d->udev,0,6) < 0)
err("set interface failed");

- cxusb_ctrl_msg(d,0x36, buf, 2, NULL, 0);
- cxusb_set_i2c_path(d,PATH_CX22702);
- cxusb_ctrl_msg(d,CMD_POWER_ON, NULL, 0, &b, 1);
+ cxusb_ctrl_msg(d,CMD_DIGITAL, NULL, 0, &b, 1);

if ((d->fe = cx22702_attach(&cxusb_cx22702_config, &d->i2c_adap)) != NULL)
return 0;
@@ -239,14 +223,12 @@ static struct dvb_usb_properties cxusb_p
.generic_bulk_ctrl_endpoint = 0x01,
/* parameter for the MPEG2-data transfer */
.urb = {
- .type = DVB_USB_ISOC,
+ .type = DVB_USB_BULK,
.count = 5,
.endpoint = 0x02,
.u = {
- .isoc = {
- .framesperurb = 32,
- .framesize = 940,
- .interval = 5,
+ .bulk = {
+ .buffersize = 8192,
}
}
},
--- linux-2.6.13-git4.orig/drivers/media/dvb/dvb-usb/cxusb.h 2005-09-04 22:24:23.000000000 +0200
+++ linux-2.6.13-git4/drivers/media/dvb/dvb-usb/cxusb.h 2005-09-04 22:28:25.000000000 +0200
@@ -1,30 +1,31 @@
#ifndef _DVB_USB_CXUSB_H_
#define _DVB_USB_CXUSB_H_

-#define DVB_USB_LOG_PREFIX "digitv"
+#define DVB_USB_LOG_PREFIX "cxusb"
#include "dvb-usb.h"

extern int dvb_usb_cxusb_debug;
#define deb_info(args...) dprintk(dvb_usb_cxusb_debug,0x01,args)

/* usb commands - some of it are guesses, don't have a reference yet */
-#define CMD_I2C_WRITE 0x08
-#define CMD_I2C_READ 0x09
+#define CMD_I2C_WRITE 0x08
+#define CMD_I2C_READ 0x09

-#define CMD_IOCTL 0x0e
-#define IOCTL_SET_I2C_PATH 0x02
+#define CMD_GPIO_READ 0x0d
+#define CMD_GPIO_WRITE 0x0e
+#define GPIO_TUNER 0x02

-#define CMD_POWER_OFF 0x50
-#define CMD_POWER_ON 0x51
+#define CMD_POWER_OFF 0xdc
+#define CMD_POWER_ON 0xde

-enum cxusb_i2c_pathes {
- PATH_UNDEF = 0x00,
- PATH_CX22702 = 0x01,
- PATH_TUNER_OTHER = 0x02,
-};
+#define CMD_STREAMING_ON 0x36
+#define CMD_STREAMING_OFF 0x37
+
+#define CMD_ANALOG 0x50
+#define CMD_DIGITAL 0x51

struct cxusb_state {
- enum cxusb_i2c_pathes cur_i2c_path;
+ u8 gpio_write_state[3];
};

#endif
--

-
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