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: Patrick Boettcher <pb@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
This commit is contained in:
Patrick Boettcher
Mauro Carvalho Chehab
Родитель
e142e5107f
Коммит
d3707add61
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@ -24,7 +24,7 @@ extern int dvb_usb_disable_rc_polling;
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#define deb_mem(args...) dprintk(dvb_usb_debug,0x80,args)
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/* commonly used methods */
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extern int usb_cypress_load_firmware(struct usb_device *, const char *, int);
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extern int dvb_usb_download_firmware(struct usb_device *, struct dvb_usb_properties *);
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extern int dvb_usb_urb_submit(struct dvb_usb_device *);
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extern int dvb_usb_urb_kill(struct dvb_usb_device *);
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@ -9,7 +9,6 @@
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*/
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#include "dvb-usb-common.h"
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#include <linux/firmware.h>
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#include <linux/usb.h>
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struct usb_cypress_controller {
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@ -19,9 +18,10 @@ struct usb_cypress_controller {
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};
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static struct usb_cypress_controller cypress[] = {
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{ .id = CYPRESS_AN2135, .name = "Cypress AN2135", .cpu_cs_register = 0x7f92 },
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{ .id = CYPRESS_AN2235, .name = "Cypress AN2235", .cpu_cs_register = 0x7f92 },
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{ .id = CYPRESS_FX2, .name = "Cypress FX2", .cpu_cs_register = 0xe600 },
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{ .id = DEVICE_SPECIFIC, .name = "Device specific", .cpu_cs_register = 0 },
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{ .id = CYPRESS_AN2135, .name = "Cypress AN2135", .cpu_cs_register = 0x7f92 },
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{ .id = CYPRESS_AN2235, .name = "Cypress AN2235", .cpu_cs_register = 0x7f92 },
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{ .id = CYPRESS_FX2, .name = "Cypress FX2", .cpu_cs_register = 0xe600 },
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};
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/*
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@ -33,68 +33,113 @@ static int usb_cypress_writemem(struct usb_device *udev,u16 addr,u8 *data, u8 le
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0xa0, USB_TYPE_VENDOR, addr, 0x00, data, len, 5*HZ);
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}
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int usb_cypress_load_firmware(struct usb_device *udev, const char *filename, int type)
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static int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type)
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{
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const struct firmware *fw = NULL;
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u16 addr;
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u8 *b,*p;
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int ret = 0,i;
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struct hexline hx;
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u8 reset;
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int ret,pos=0;
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if ((ret = request_firmware(&fw, filename, &udev->dev)) != 0) {
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err("did not find the firmware file. (%s) "
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"Please see linux/Documentation/dvb/ for more details on firmware-problems.",
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filename);
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/* stop the CPU */
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reset = 1;
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if ((ret = usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1)) != 1)
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err("could not stop the USB controller CPU.");
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while ((ret = dvb_usb_get_hexline(fw,&hx,&pos)) > 0) {
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deb_fw("writing to address 0x%04x (buffer: 0x%02x %02x)\n",hx.addr,hx.len,hx.chk);
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ret = usb_cypress_writemem(udev,hx.addr,hx.data,hx.len);
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if (ret != hx.len) {
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err("error while transferring firmware "
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"(transferred size: %d, block size: %d)",
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ret,hx.len);
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ret = -EINVAL;
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break;
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}
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}
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if (ret < 0) {
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err("firmware download failed at %d with %d",pos,ret);
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return ret;
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}
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info("downloading firmware from file '%s' to the '%s'",filename,cypress[type].name);
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p = kmalloc(fw->size,GFP_KERNEL);
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if (p != NULL) {
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u8 reset;
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/*
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* you cannot use the fw->data as buffer for
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* usb_control_msg, a new buffer has to be
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* created
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*/
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memcpy(p,fw->data,fw->size);
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/* stop the CPU */
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reset = 1;
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if ((ret = usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1)) != 1)
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err("could not stop the USB controller CPU.");
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for(i = 0; p[i+3] == 0 && i < fw->size; ) {
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b = (u8 *) &p[i];
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addr = cpu_to_le16( *((u16 *) &b[1]) );
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deb_fw("writing to address 0x%04x (buffer: 0x%02x%02x)\n",addr,b[1],b[2]);
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ret = usb_cypress_writemem(udev,addr,&b[4],b[0]);
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if (ret != b[0]) {
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err("error while transferring firmware "
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"(transferred size: %d, block size: %d)",
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ret,b[0]);
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ret = -EINVAL;
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break;
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}
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i += 5 + b[0];
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}
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/* length in ret */
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if (ret > 0)
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ret = 0;
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if (ret == 0) {
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/* restart the CPU */
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reset = 0;
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if (ret || usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1) != 1) {
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err("could not restart the USB controller CPU.");
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ret = -EINVAL;
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}
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kfree(p);
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} else {
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ret = -ENOMEM;
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}
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release_firmware(fw);
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} else
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ret = -EIO;
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return ret;
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}
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int dvb_usb_download_firmware(struct usb_device *udev, struct dvb_usb_properties *props)
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{
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int ret;
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const struct firmware *fw = NULL;
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if ((ret = request_firmware(&fw, props->firmware, &udev->dev)) != 0) {
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err("did not find the firmware file. (%s) "
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"Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
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props->firmware,ret);
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return ret;
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}
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info("downloading firmware from file '%s'",props->firmware);
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switch (props->usb_ctrl) {
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case CYPRESS_AN2135:
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case CYPRESS_AN2235:
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case CYPRESS_FX2:
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ret = usb_cypress_load_firmware(udev, fw, props->usb_ctrl);
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break;
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case DEVICE_SPECIFIC:
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if (props->download_firmware)
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ret = props->download_firmware(udev,fw);
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else {
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err("BUG: driver didn't specified a download_firmware-callback, although it claims to have a DEVICE_SPECIFIC one.");
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ret = -EINVAL;
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}
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break;
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default:
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ret = -EINVAL;
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break;
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}
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release_firmware(fw);
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return ret;
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}
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int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx, int *pos)
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{
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u8 *b = (u8 *) &fw->data[*pos];
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int data_offs = 4;
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if (*pos >= fw->size)
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return 0;
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memset(hx,0,sizeof(struct hexline));
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hx->len = b[0];
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if ((*pos + hx->len + 4) >= fw->size)
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return -EINVAL;
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hx->addr = le16_to_cpu( *((u16 *) &b[1]) );
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hx->type = b[3];
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if (hx->type == 0x04) {
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/* b[4] and b[5] are the Extended linear address record data field */
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hx->addr |= (b[4] << 24) | (b[5] << 16);
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/* hx->len -= 2;
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data_offs += 2; */
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}
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memcpy(hx->data,&b[data_offs],hx->len);
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hx->chk = b[hx->len + data_offs];
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*pos += hx->len + 5;
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return *pos;
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}
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EXPORT_SYMBOL(dvb_usb_get_hexline);
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@ -145,39 +145,41 @@ int dvb_usb_device_init(struct usb_interface *intf, struct dvb_usb_properties
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if (cold) {
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info("found a '%s' in cold state, will try to load a firmware",desc->name);
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ret = usb_cypress_load_firmware(udev,props->firmware,props->usb_ctrl);
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} else {
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info("found a '%s' in warm state.",desc->name);
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d = kmalloc(sizeof(struct dvb_usb_device),GFP_KERNEL);
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if (d == NULL) {
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err("no memory for 'struct dvb_usb_device'");
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ret = dvb_usb_download_firmware(udev,props);
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if (!props->no_reconnect)
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return ret;
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}
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memset(d,0,sizeof(struct dvb_usb_device));
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d->udev = udev;
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memcpy(&d->props,props,sizeof(struct dvb_usb_properties));
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d->desc = desc;
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d->owner = owner;
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if (d->props.size_of_priv > 0) {
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d->priv = kmalloc(d->props.size_of_priv,GFP_KERNEL);
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if (d->priv == NULL) {
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err("no memory for priv in 'struct dvb_usb_device'");
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kfree(d);
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return -ENOMEM;
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}
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memset(d->priv,0,d->props.size_of_priv);
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}
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usb_set_intfdata(intf, d);
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if (du != NULL)
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*du = d;
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ret = dvb_usb_init(d);
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}
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info("found a '%s' in warm state.",desc->name);
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d = kmalloc(sizeof(struct dvb_usb_device),GFP_KERNEL);
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if (d == NULL) {
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err("no memory for 'struct dvb_usb_device'");
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return ret;
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}
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memset(d,0,sizeof(struct dvb_usb_device));
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d->udev = udev;
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memcpy(&d->props,props,sizeof(struct dvb_usb_properties));
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d->desc = desc;
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d->owner = owner;
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if (d->props.size_of_priv > 0) {
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d->priv = kmalloc(d->props.size_of_priv,GFP_KERNEL);
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if (d->priv == NULL) {
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err("no memory for priv in 'struct dvb_usb_device'");
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kfree(d);
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return -ENOMEM;
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}
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memset(d->priv,0,d->props.size_of_priv);
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}
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usb_set_intfdata(intf, d);
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if (du != NULL)
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*du = d;
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ret = dvb_usb_init(d);
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if (ret == 0)
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info("%s successfully initialized and connected.",desc->name);
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else
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@ -12,6 +12,7 @@
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#include <linux/input.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/firmware.h>
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#include "dvb_frontend.h"
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#include "dvb_demux.h"
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@ -94,7 +95,11 @@ struct dvb_usb_device;
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* @usb_ctrl: which USB device-side controller is in use. Needed for firmware
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* download.
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* @firmware: name of the firmware file.
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*
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* @download_firmware: called to download the firmware when the usb_ctrl is
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* DEVICE_SPECIFIC.
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* @no_reconnect: device doesn't do a reconnect after downloading the firmware,
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so do the warm initialization right after it
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* @size_of_priv: how many bytes shall be allocated for the private field
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* of struct dvb_usb_device.
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*
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@ -142,11 +147,14 @@ struct dvb_usb_properties {
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int caps;
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int pid_filter_count;
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#define CYPRESS_AN2135 0
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#define CYPRESS_AN2235 1
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#define CYPRESS_FX2 2
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#define DEVICE_SPECIFIC 0
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#define CYPRESS_AN2135 1
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#define CYPRESS_AN2235 2
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#define CYPRESS_FX2 3
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int usb_ctrl;
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const char *firmware;
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const char firmware[FIRMWARE_NAME_MAX];
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int (*download_firmware) (struct usb_device *, const struct firmware *);
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int no_reconnect;
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int size_of_priv;
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@ -326,5 +334,14 @@ extern int dvb_usb_pll_init_i2c(struct dvb_frontend *);
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extern int dvb_usb_pll_set(struct dvb_frontend *, struct dvb_frontend_parameters *, u8[]);
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extern int dvb_usb_pll_set_i2c(struct dvb_frontend *, struct dvb_frontend_parameters *);
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/* commonly used firmware download types and function */
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struct hexline {
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u8 len;
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u32 addr;
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u8 type;
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u8 data[255];
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u8 chk;
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};
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extern int dvb_usb_get_hexline(const struct firmware *, struct hexline *, int *);
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#endif
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