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[linux-dvb] Re: TT DVB-T and SP8870
Hi Jürgen,
I applied your patch to CVS, thanks for your driver.
Holger
Jürgen Peitz wrote:
>
> Also got this card from dvb-shop a few weeks ago, strange to hear that it
> should be an old prototype.
>
> The patch below is working fine with my card, but I am not an expert in linux
> driver programming, so maybe some changes have to be made.
> I also have a patch for the oldstruct driver, so if somebody needs it let me
> know.
>
> Next problem for me is now, that some channels move to VHF in Berlin and I
> don't know, if this card is also working with VHF. Does anybody know more
> about this?
>
> Juergen
>
> dvb patch for HEAD:
>
> ------------------------------- cut here--------------------------------------
>
> diff -rNu DVB/driver/frontends/Config.in DVB_Patch/driver/frontends/Config.in
> --- DVB/driver/frontends/Config.in Mon Oct 21 16:28:31 2002
> +++ DVB_Patch/driver/frontends/Config.in Wed Oct 23 01:02:08 2002
> @@ -1,6 +1,7 @@
> dep_tristate ' Alps BSRU6 (QPSK)' CONFIG_DVB_ALPS_BSRU6
> dep_tristate ' Alps BSRV2 (QPSK)' CONFIG_DVB_ALPS_BSRV2
> dep_tristate ' Alps TDMB7 (OFDM)' CONFIG_DVB_ALPS_TDMB7
> +dep_tristate ' Alps TDLB7 (OFDM)' CONFIG_DVB_ALPS_TDLB7
> dep_tristate ' Grundig 29504-491 (QPSK)' CONFIG_DVB_GRUNDIG_29504_491
> dep_tristate ' Grundig 29504-401 (OFDM)' CONFIG_DVB_GRUNDIG_29504_401
> dep_tristate ' frontends with external VES1820 demodulator (QAM)'
> CONFIG_DVB_VES1820
> diff -rNu DVB/driver/frontends/Makefile DVB_Patch/driver/frontends/Makefile
> --- DVB/driver/frontends/Makefile Mon Oct 21 16:28:31 2002
> +++ DVB_Patch/driver/frontends/Makefile Wed Oct 23 01:02:08 2002
> @@ -18,12 +18,13 @@
>
>
> ifdef DVB_PACK
> -obj-m += alps_bsru6.o alps_bsrv2.o alps_tdmb7.o grundig_29504-401.o
> grundig_29504-491.o ves1820.o
> +obj-m += alps_bsru6.o alps_bsrv2.o alps_tdmb7.o alps_tdlb7.o
> grundig_29504-401.o grundig_29504-491.o ves1820.o
> EXTRA_CFLAGS = -I ../../include -I . -g -I..
> else
> obj-$(CONFIG_DVB_ALPS_BSRU6) += alps_bsru6.o
> obj-$(CONFIG_DVB_ALPS_BSRV2) += alps_bsrv2.o
> obj-$(CONFIG_DVB_ALPS_TDMB7) += alps_tdmb7.o
> +obj-$(CONFIG_DVB_ALPS_TDLB7) += alps_tdlb7.o
> obj-$(CONFIG_DVB_GRUNDIG_29504_491) += grundig_29504-491.o
> obj-$(CONFIG_DVB_GRUNDIG_29504_401) += grundig_29504-401.o
> obj-$(CONFIG_DVB_VES1820) += ves1820.o
> diff -rNu DVB/driver/frontends/README.alps_tdlb7
> DVB_Patch/driver/frontends/README.alps_tdlb7
> --- DVB/driver/frontends/README.alps_tdlb7 Thu Jan 1 01:00:00 1970
> +++ DVB_Patch/driver/frontends/README.alps_tdlb7 Wed Oct 23 01:02:08 2002
> @@ -0,0 +1,10 @@
> +This tuner module needs the file "Sc_main.mc" from the windows driver.
> +It should be copied to "/usr/lib/DVB/driver/frontends". Or give the
> +module parameter: mcfile="/PATH/FILENAME". The microcode from this file has
> +to be loaded only once after a power on. Because this takes some
> +time, you can pass the module parameter: loadcode=0 if you only want to
> +reload the dvb driver.
> +This driver is working fine on my computer, but I am not a real expert for
> +linux modules. So I hope somebody else, who knows more about linux
> programming
> +and dvb frontends, will do some work an this driver.
> +If you have questions, mail to peitz@snafu.de
> diff -rNu DVB/driver/frontends/alps_tdlb7.c
> DVB_Patch/driver/frontends/alps_tdlb7.c
> --- DVB/driver/frontends/alps_tdlb7.c Thu Jan 1 01:00:00 1970
> +++ DVB_Patch/driver/frontends/alps_tdlb7.c Wed Oct 23 01:02:09 2002
> @@ -0,0 +1,437 @@
> +/*
> + Driver for Alps TDLB7 Frontend
> +
> + Copyright (C) 1999 Convergence Integrated Media GmbH
> <ralph@convergence.de>
> +
> + 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; either version 2 of the License, or
> + (at your option) any later version.
> +
> + This program is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> +
> + GNU General Public License for more details.
> +
> + You should have received a copy of the GNU General Public License
> + along with this program; if not, write to the Free Software
> + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
> +
> +*/
> +
> +
> +/*
> +
> + Wrote this code mainly to get my own card running. It's working for me,
> but I
> + hope somebody who knows more about linux programming and the DVB driver
> can
> + improve it.
> +
> + Reused a lot from the existing driver and tuner code.
> + Thanks to everybody who worked on it!
> +
> + This driver needs a copy of the microcode file 'Sc_main.mc' from the
> Haupauge
> + windows driver in the 'usr/lib/DVB/driver/frontends' directory.
> + You can also pass the complete file name with the module parameter
> 'mcfile'.
> +
> + The code only needs to be loaded once after a power on. Because loading
> the
> + microcode to the card takes some time, you can use the 'loadcode=0'
> module
> + parameter, if you only want to reload the dvb driver.
> +
> + Juergen Peitz
> +
> +*/
> +
> +
> +
> +#define __KERNEL_SYSCALLS__
> +#include <linux/module.h>
> +#include <linux/init.h>
> +#include <linux/vmalloc.h>
> +#include <linux/fs.h>
> +#include <linux/unistd.h>
> +
> +#include "../compat.h"
> +#include "../dvb_frontend.h"
> +
> +static int debug = 0;
> +
> +static int loadcode = 1;
> +
> +static char * mcfile = "/usr/lib/DVB/driver/frontends/Sc_main.mc";
> +
> +#define dprintk if (debug) printk
> +
> +/* microcode size for sp8870 */
> +#define SP8870_CODE_SIZE 16384
> +
> +/* starting point for microcode in file 'Sc_main.mc' */
> +#define SP8870_CODE_OFFSET 0x0A
> +
> +
> +static int errno;
> +
> +static
> +struct dvb_frontend_info tdlb7_info = {
> + name: "Alps TDLB7",
> + type: FE_OFDM,
> + frequency_min: 470000000,
> + frequency_max: 860000000,
> + frequency_stepsize: 166666,
> +#if 0
> + frequency_tolerance: ???,
> + symbol_rate_min: ???,
> + symbol_rate_max: ???,
> + symbol_rate_tolerance: ???,
> + notifier_delay: 0,
> +#endif
> + caps: FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
> + FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
> + FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64
> +};
> +
> +
> +static
> +int sp8870_writereg (struct dvb_i2c_bus *i2c, u16 reg, u16 data)
> +{
> + u8 buf [] = { reg >> 8, reg & 0xff, data >> 8, data & 0xff };
> + struct i2c_msg msg = { addr: 0x71, flags: 0, buf: buf, len: 4 };
> + int err;
> +
> + if ((err = i2c->xfer (i2c, &msg, 1)) != 1) {
> + dprintk ("%s: writereg error (err == %i, reg == 0x%02x, data ==
> 0x%02x)\n", __FUNCTION__, err, reg, data);
> + return -EREMOTEIO;
> + }
> +
> + return 0;
> +}
> +
> +
> +static
> +u16 sp8870_readreg (struct dvb_i2c_bus *i2c, u16 reg)
> +{
> + int ret;
> + u8 b0 [] = { reg >> 8 , reg & 0xff };
> + u8 b1 [] = { 0, 0 };
> + struct i2c_msg msg [] = { { addr: 0x71, flags: 0, buf: b0, len: 2 },
> + { addr: 0x71, flags: I2C_M_RD, buf: b1, len: 2 } };
> +
> + ret = i2c->xfer (i2c, msg, 2);
> +
> + if (ret != 2)
> + dprintk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
> +
> + return (b1[0] << 8 | b1[1]);
> +}
> +
> +
> +static
> +int sp5659_write (struct dvb_i2c_bus *i2c, u8 data [4])
> +{
> + int ret;
> + struct i2c_msg msg = { addr: 0x60, flags: 0, buf: data, len: 4 };
> +
> + ret = i2c->xfer (i2c, &msg, 1);
> +
> + if (ret != 1)
> + printk("%s: i/o error (ret == %i)\n", __FUNCTION__, ret);
> +
> + return (ret != 1) ? -1 : 0;
> +}
> +
> +
> +static
> +int sp5659_set_tv_freq (struct dvb_i2c_bus *i2c, u32 freq, u8 pwr)
> +{
> + u32 div = (freq + 36200000) / 166666;
> + u8 buf [4] = { (div >> 8) & 0x7f, div & 0xff, 0x85, (pwr << 5) |
> 0x30 };
> +
> + return sp5659_write (i2c, buf);
> +}
> +
> +
> +static
> +int sp8870_read_code(const char *fn, char **fp)
> +{
> + int fd;
> + loff_t l;
> + char *dp;
> +
> + fd = open(fn, 0, 0);
> + if (fd == -1) {
> + printk(KERN_INFO "%s: Unable to load '%s'.\n", __FUNCTION__,
> fn);
> + return -1;
> + }
> + l = lseek(fd, 0L, 2);
> + if (l <= 0 || l < SP8870_CODE_OFFSET+SP8870_CODE_SIZE) {
> + printk(KERN_INFO "%s: code file too small '%s'\n", __FUNCTION__,
> fn);
> + sys_close(fd);
> + return -1;
> + }
> + lseek(fd, SP8870_CODE_OFFSET, 0);
> + *fp= dp = vmalloc(SP8870_CODE_SIZE);
> + if (dp == NULL) {
> + printk(KERN_INFO "%s: Out of memory loading '%s'.\n", __FUNCTION__, fn);
> + sys_close(fd);
> + return -1;
> + }
> + if (read(fd, dp, SP8870_CODE_SIZE) != SP8870_CODE_SIZE) {
> + printk(KERN_INFO "%s: Failed to read '%s'.\n",__FUNCTION__, fn);
> + vfree(dp);
> + sys_close(fd);
> + return -1;
> + }
> + sys_close(fd);
> + *fp = dp;
> + return 0;
> +}
> +
> +
> +static
> +int sp8870_load_code(struct dvb_i2c_bus *i2c)
> +{
> + /* this takes a long time. is there a way to do it faster? */
> + char *lcode;
> + struct i2c_msg msg;
> + unsigned char buf[255];
> + int err;
> + int p=0;
> + int c;
> + mm_segment_t fs = get_fs();
> +
> + sp8870_writereg(i2c,0x8F08,0x1FFF);
> + sp8870_writereg(i2c,0x8F0A,0x0000);
> +
> + set_fs(get_ds());
> + if (sp8870_read_code(mcfile,(char**) &lcode)<0) return -1;
> + set_fs(fs);
> + while (p<SP8870_CODE_SIZE){
> + c = (p<=SP8870_CODE_SIZE-252) ? 252 : SP8870_CODE_SIZE-p;
> + buf[0]=0xCF;
> + buf[1]=0x0A;
> + memcpy(&buf[2],lcode+p,c);
> + c+=2;
> + msg.addr=0x71;
> + msg.flags=0;
> + msg.buf=buf;
> + msg.len=c;
> + if ((err = i2c->xfer (i2c, &msg, 1)) != 1) {
> + dprintk ("%s: i2c error (err == %i)\n", __FUNCTION__, err);
> + vfree(lcode);
> + return -EREMOTEIO;
> + }
> +
> + p+=252;
> + }
> + vfree(lcode);
> + return 0;
> +};
> +
> +
> +static
> +int sp8870_init (struct dvb_i2c_bus *i2c)
> +{
> +
> + dprintk ("%s\n", __FUNCTION__);
> +
> + sp8870_readreg(i2c,0x200);
> + sp8870_readreg(i2c,0x200);
> + sp8870_readreg(i2c,0x0F00); /* system controller stop */
> + sp8870_readreg(i2c,0x0301); /* ???????? */
> + sp8870_readreg(i2c,0x0309); /* integer carrier offset */
> + sp8870_readreg(i2c,0x030A); /* fractional carrier offset */
> + sp8870_readreg(i2c,0x0311); /* filter for 8 Mhz channel */
> + sp8870_readreg(i2c,0x0319); /* sample rate correction bit [23..17] */
> + sp8870_readreg(i2c,0x031A); /* sample rate correction bit [16..0] */
> + sp8870_readreg(i2c,0x0338); /* ???????? */
> + sp8870_readreg(i2c,0x0F00);
> + sp8870_readreg(i2c,0x0200);
> +
> + if (loadcode) {
> + dprintk("%s: loading mcfile '%s' !\n", __FUNCTION__, mcfile);
> + if (sp8870_load_code(i2c)==0)
> + dprintk("%s: microcode loaded!\n", __FUNCTION__);
> + }else{
> + dprintk("%s: without loading mcfile!\n", __FUNCTION__);
> + }
> +
> + return 0;
> +}
> +
> +
> +static
> +int sp8870_reset (struct dvb_i2c_bus *i2c)
> +{
> + dprintk("%s\n", __FUNCTION__);
> + sp8870_writereg(i2c,0x0F00,0x0000); /* system controller stop */
> + sp8870_writereg(i2c,0x0301,0x0003); /* ???????? */
> + sp8870_writereg(i2c,0x0309,0x0400); /* integer carrier offset */
> + sp8870_writereg(i2c,0x030A,0x0000); /* fractional carrier offset */
> + sp8870_writereg(i2c,0x0311,0x0000); /* filter for 8 Mhz channel */
> + sp8870_writereg(i2c,0x0319,0x000A); /* sample rate correction bit [23..17]
> */
> + sp8870_writereg(i2c,0x031A,0x0AAB); /* sample rate correction bit [16..0] */
> + sp8870_writereg(i2c,0x0338,0x0000); /* ???????? */
> + sp8870_writereg(i2c,0x0201,0x0000); /* interrupts for change of lock or
> tuner adjustment disabled */
> + sp8870_writereg(i2c,0x0F00,0x0001); /* system controller start */
> +
> + return 0;
> +}
> +
> +static
> +int tdlb7_ioctl (struct dvb_frontend *fe, unsigned int cmd, void *arg)
> +{
> + struct dvb_i2c_bus *i2c = fe->i2c;
> +
> + switch (cmd) {
> + case FE_GET_INFO:
> + memcpy (arg, &tdlb7_info, sizeof(struct dvb_frontend_info));
> + break;
> +
> + case FE_READ_STATUS:
> + {
> + fe_status_t *status = arg;
> + int sync = sp8870_readreg (i2c, 0x0200);
> +
> + *status=0;
> +
> + if (sync&0x04) // FIXME: find criteria for having signal
> + *status |= FE_HAS_SIGNAL;
> +
> + if (sync&0x04) // FIXME: find criteria
> + *status |= FE_HAS_CARRIER;
> +
> + if (sync&0x04) // FIXME
> + *status |= FE_HAS_VITERBI;
> +
> + if (sync&0x08) // FIXME
> + *status |= FE_HAS_SYNC;
> +
> + if (sync&0x04)
> + *status |= FE_HAS_LOCK;
> + break;
> +
> + }
> +
> + case FE_READ_BER:
> + {
> + u32 *ber=(u32 *) arg;
> + *ber=sp8870_readreg(i2c,0x0C07); // bit error rate before Viterbi
> + break;
> +
> + }
> +
> + case FE_READ_SIGNAL_STRENGTH: // not supported by hardware?
> + {
> + s32 *signal=(s32 *) arg;
> + *signal=0;
> + break;
> + }
> +
> + case FE_READ_SNR: // not supported by hardware?
> + {
> + s32 *snr=(s32 *) arg;
> + *snr=0;
> + break;
> + }
> +
> + case FE_READ_UNCORRECTED_BLOCKS: // not supported by hardware?
> + {
> + u32 *ublocks=(u32 *) arg;
> + *ublocks=0;
> + break;
> + }
> +
> + case FE_SET_FRONTEND:
> + {
> + struct dvb_frontend_parameters *p = arg;
> + sp5659_set_tv_freq (i2c, p->frequency, 0);
> + // all other parameters are set by the on card
> + // system controller. Don't know how to pass
> + // distinct values to the card.
> + break;
> + }
> +
> + case FE_GET_FRONTEND: // how to do this?
> + {
> + break;
> + }
> +
> + case FE_SLEEP: // is this supported by hardware?
> + return -EOPNOTSUPP;
> +
> + case FE_INIT:
> + return sp8870_init (i2c);
> +
> + case FE_RESET:
> + return sp8870_reset (i2c);
> +
> + default:
> + return -EOPNOTSUPP;
> + };
> +
> + return 0;
> +}
> +
> +
> +static
> +int tdlb7_attach (struct dvb_i2c_bus *i2c)
> +{
> +
> + struct i2c_msg msg = { addr: 0x71, flags: 0, buf: NULL, len: 0 };
> +
> + dprintk ("%s\n", __FUNCTION__);
> +
> + if (i2c->xfer (i2c, &msg, 1) != 1)
> + return -ENODEV;
> +
> + dvb_register_frontend (tdlb7_ioctl, i2c, NULL, &tdlb7_info);
> +
> + return 0;
> +}
> +
> +
> +static
> +void tdlb7_detach (struct dvb_i2c_bus *i2c)
> +{
> + dprintk ("%s\n", __FUNCTION__);
> +
> + dvb_unregister_frontend (tdlb7_ioctl, i2c);
> +}
> +
> +
> +static
> +int __init init_tdlb7 (void)
> +{
> + dprintk ("%s\n", __FUNCTION__);
> +
> + return dvb_register_i2c_device (THIS_MODULE, tdlb7_attach, tdlb7_detach);
> +}
> +
> +
> +static
> +void __exit exit_tdlb7 (void)
> +{
> + dprintk ("%s\n", __FUNCTION__);
> +
> + dvb_unregister_i2c_device (tdlb7_attach);
> +}
> +
> +
> +module_init(init_tdlb7);
> +module_exit(exit_tdlb7);
> +
> +
> +MODULE_PARM(debug,"i");
> +MODULE_PARM_DESC(debug, "enable verbose debug messages");
> +
> +MODULE_PARM(loadcode,"i");
> +MODULE_PARM_DESC(loadcode, "load tuner microcode");
> +
> +MODULE_PARM(mcfile,"s");
> +MODULE_PARM_DESC(mcfile, "where to find the microcode file");
> +
> +MODULE_DESCRIPTION("TDLB7 DVB-T Frontend");
> +MODULE_AUTHOR("Holger Waechtler, Juergen Peitz");
> +MODULE_LICENSE("GPL");
> +
> +
>
--
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