Commit d3707add authored by Patrick Boettcher's avatar Patrick Boettcher Committed by Mauro Carvalho Chehab

DVB (2420): Makes integration of future devices easier


- To make the integration of future devices easier
- modified the dvb-usb-part to allow a device-specific firmware download
- added an option to specify whether a device reconnects after a firmware download or not.
Signed-off-by: default avatarPatrick Boettcher <pb@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@brturbo.com.br>
parent e142e510
......@@ -24,7 +24,7 @@ extern int dvb_usb_disable_rc_polling;
#define deb_mem(args...) dprintk(dvb_usb_debug,0x80,args)
/* commonly used methods */
extern int usb_cypress_load_firmware(struct usb_device *, const char *, int);
extern int dvb_usb_download_firmware(struct usb_device *, struct dvb_usb_properties *);
extern int dvb_usb_urb_submit(struct dvb_usb_device *);
extern int dvb_usb_urb_kill(struct dvb_usb_device *);
......
......@@ -9,7 +9,6 @@
*/
#include "dvb-usb-common.h"
#include <linux/firmware.h>
#include <linux/usb.h>
struct usb_cypress_controller {
......@@ -19,6 +18,7 @@ struct usb_cypress_controller {
};
static struct usb_cypress_controller cypress[] = {
{ .id = DEVICE_SPECIFIC, .name = "Device specific", .cpu_cs_register = 0 },
{ .id = CYPRESS_AN2135, .name = "Cypress AN2135", .cpu_cs_register = 0x7f92 },
{ .id = CYPRESS_AN2235, .name = "Cypress AN2235", .cpu_cs_register = 0x7f92 },
{ .id = CYPRESS_FX2, .name = "Cypress FX2", .cpu_cs_register = 0xe600 },
......@@ -33,68 +33,113 @@ static int usb_cypress_writemem(struct usb_device *udev,u16 addr,u8 *data, u8 le
0xa0, USB_TYPE_VENDOR, addr, 0x00, data, len, 5*HZ);
}
int usb_cypress_load_firmware(struct usb_device *udev, const char *filename, int type)
static int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type)
{
const struct firmware *fw = NULL;
u16 addr;
u8 *b,*p;
int ret = 0,i;
if ((ret = request_firmware(&fw, filename, &udev->dev)) != 0) {
err("did not find the firmware file. (%s) "
"Please see linux/Documentation/dvb/ for more details on firmware-problems.",
filename);
return ret;
}
info("downloading firmware from file '%s' to the '%s'",filename,cypress[type].name);
p = kmalloc(fw->size,GFP_KERNEL);
if (p != NULL) {
struct hexline hx;
u8 reset;
/*
* you cannot use the fw->data as buffer for
* usb_control_msg, a new buffer has to be
* created
*/
memcpy(p,fw->data,fw->size);
int ret,pos=0;
/* stop the CPU */
reset = 1;
if ((ret = usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1)) != 1)
err("could not stop the USB controller CPU.");
for(i = 0; p[i+3] == 0 && i < fw->size; ) {
b = (u8 *) &p[i];
addr = cpu_to_le16( *((u16 *) &b[1]) );
deb_fw("writing to address 0x%04x (buffer: 0x%02x%02x)\n",addr,b[1],b[2]);
ret = usb_cypress_writemem(udev,addr,&b[4],b[0]);
while ((ret = dvb_usb_get_hexline(fw,&hx,&pos)) > 0) {
deb_fw("writing to address 0x%04x (buffer: 0x%02x %02x)\n",hx.addr,hx.len,hx.chk);
ret = usb_cypress_writemem(udev,hx.addr,hx.data,hx.len);
if (ret != b[0]) {
if (ret != hx.len) {
err("error while transferring firmware "
"(transferred size: %d, block size: %d)",
ret,b[0]);
ret,hx.len);
ret = -EINVAL;
break;
}
i += 5 + b[0];
}
/* length in ret */
if (ret > 0)
ret = 0;
if (ret < 0) {
err("firmware download failed at %d with %d",pos,ret);
return ret;
}
if (ret == 0) {
/* restart the CPU */
reset = 0;
if (ret || usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1) != 1) {
err("could not restart the USB controller CPU.");
ret = -EINVAL;
}
} else
ret = -EIO;
return ret;
}
kfree(p);
} else {
ret = -ENOMEM;
int dvb_usb_download_firmware(struct usb_device *udev, struct dvb_usb_properties *props)
{
int ret;
const struct firmware *fw = NULL;
if ((ret = request_firmware(&fw, props->firmware, &udev->dev)) != 0) {
err("did not find the firmware file. (%s) "
"Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
props->firmware,ret);
return ret;
}
release_firmware(fw);
info("downloading firmware from file '%s'",props->firmware);
switch (props->usb_ctrl) {
case CYPRESS_AN2135:
case CYPRESS_AN2235:
case CYPRESS_FX2:
ret = usb_cypress_load_firmware(udev, fw, props->usb_ctrl);
break;
case DEVICE_SPECIFIC:
if (props->download_firmware)
ret = props->download_firmware(udev,fw);
else {
err("BUG: driver didn't specified a download_firmware-callback, although it claims to have a DEVICE_SPECIFIC one.");
ret = -EINVAL;
}
break;
default:
ret = -EINVAL;
break;
}
release_firmware(fw);
return ret;
}
int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx, int *pos)
{
u8 *b = (u8 *) &fw->data[*pos];
int data_offs = 4;
if (*pos >= fw->size)
return 0;
memset(hx,0,sizeof(struct hexline));
hx->len = b[0];
if ((*pos + hx->len + 4) >= fw->size)
return -EINVAL;
hx->addr = le16_to_cpu( *((u16 *) &b[1]) );
hx->type = b[3];
if (hx->type == 0x04) {
/* b[4] and b[5] are the Extended linear address record data field */
hx->addr |= (b[4] << 24) | (b[5] << 16);
/* hx->len -= 2;
data_offs += 2; */
}
memcpy(hx->data,&b[data_offs],hx->len);
hx->chk = b[hx->len + data_offs];
*pos += hx->len + 5;
return *pos;
}
EXPORT_SYMBOL(dvb_usb_get_hexline);
......@@ -145,8 +145,11 @@ int dvb_usb_device_init(struct usb_interface *intf, struct dvb_usb_properties
if (cold) {
info("found a '%s' in cold state, will try to load a firmware",desc->name);
ret = usb_cypress_load_firmware(udev,props->firmware,props->usb_ctrl);
} else {
ret = dvb_usb_download_firmware(udev,props);
if (!props->no_reconnect)
return ret;
}
info("found a '%s' in warm state.",desc->name);
d = kmalloc(sizeof(struct dvb_usb_device),GFP_KERNEL);
if (d == NULL) {
......@@ -176,7 +179,6 @@ int dvb_usb_device_init(struct usb_interface *intf, struct dvb_usb_properties
*du = d;
ret = dvb_usb_init(d);
}
if (ret == 0)
info("%s successfully initialized and connected.",desc->name);
......
......@@ -12,6 +12,7 @@
#include <linux/input.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/firmware.h>
#include "dvb_frontend.h"
#include "dvb_demux.h"
......@@ -94,7 +95,11 @@ struct dvb_usb_device;
* @usb_ctrl: which USB device-side controller is in use. Needed for firmware
* download.
* @firmware: name of the firmware file.
*
* @download_firmware: called to download the firmware when the usb_ctrl is
* DEVICE_SPECIFIC.
* @no_reconnect: device doesn't do a reconnect after downloading the firmware,
so do the warm initialization right after it
* @size_of_priv: how many bytes shall be allocated for the private field
* of struct dvb_usb_device.
*
......@@ -142,11 +147,14 @@ struct dvb_usb_properties {
int caps;
int pid_filter_count;
#define CYPRESS_AN2135 0
#define CYPRESS_AN2235 1
#define CYPRESS_FX2 2
#define DEVICE_SPECIFIC 0
#define CYPRESS_AN2135 1
#define CYPRESS_AN2235 2
#define CYPRESS_FX2 3
int usb_ctrl;
const char *firmware;
const char firmware[FIRMWARE_NAME_MAX];
int (*download_firmware) (struct usb_device *, const struct firmware *);
int no_reconnect;
int size_of_priv;
......@@ -326,5 +334,14 @@ extern int dvb_usb_pll_init_i2c(struct dvb_frontend *);
extern int dvb_usb_pll_set(struct dvb_frontend *, struct dvb_frontend_parameters *, u8[]);
extern int dvb_usb_pll_set_i2c(struct dvb_frontend *, struct dvb_frontend_parameters *);
/* commonly used firmware download types and function */
struct hexline {
u8 len;
u32 addr;
u8 type;
u8 data[255];
u8 chk;
};
extern int dvb_usb_get_hexline(const struct firmware *, struct hexline *, int *);
#endif
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