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linux-zen-desktop/drivers/media/dvb-frontends/bcm3510.c

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Initial commit
2023-08-30 17:31:07 +02:00
/*
* Support for the Broadcom BCM3510 ATSC demodulator (1st generation Air2PC)
*
* Copyright (C) 2001-5, B2C2 inc.
*
* GPL/Linux driver written by Patrick Boettcher <patrick.boettcher@posteo.de>
*
* This driver is "hard-coded" to be used with the 1st generation of
* Technisat/B2C2's Air2PC ATSC PCI/USB cards/boxes. The pll-programming
* (Panasonic CT10S) is located here, which is actually wrong. Unless there is
* another device with a BCM3510, this is no problem.
*
* The driver works also with QAM64 DVB-C, but had an unreasonable high
* UNC. (Tested with the Air2PC ATSC 1st generation)
*
* You'll need a firmware for this driver in order to get it running. It is
* called "dvb-fe-bcm3510-01.fw".
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/jiffies.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/mutex.h>
#include <media/dvb_frontend.h>
#include "bcm3510.h"
#include "bcm3510_priv.h"
/* Max transfer size done by bcm3510_do_hab_cmd() function */
#define MAX_XFER_SIZE 128
struct bcm3510_state {
struct i2c_adapter* i2c;
const struct bcm3510_config* config;
struct dvb_frontend frontend;
/* demodulator private data */
struct mutex hab_mutex;
u8 firmware_loaded:1;
unsigned long next_status_check;
unsigned long status_check_interval;
struct bcm3510_hab_cmd_status1 status1;
struct bcm3510_hab_cmd_status2 status2;
};
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=info,2=i2c (|-able)).");
#define dprintk(level,x...) if (level & debug) printk(x)
#define dbufout(b,l,m) {\
int i; \
for (i = 0; i < l; i++) \
m("%02x ",b[i]); \
}
#define deb_info(args...) dprintk(0x01,args)
#define deb_i2c(args...) dprintk(0x02,args)
#define deb_hab(args...) dprintk(0x04,args)
/* transfer functions */
static int bcm3510_writebytes (struct bcm3510_state *state, u8 reg, u8 *buf, u8 len)
{
u8 b[256];
int err;
struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = b, .len = len + 1 };
b[0] = reg;
memcpy(&b[1],buf,len);
deb_i2c("i2c wr %02x: ",reg);
dbufout(buf,len,deb_i2c);
deb_i2c("\n");
if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
deb_info("%s: i2c write error (addr %02x, reg %02x, err == %i)\n",
__func__, state->config->demod_address, reg, err);
return -EREMOTEIO;
}
return 0;
}
static int bcm3510_readbytes (struct bcm3510_state *state, u8 reg, u8 *buf, u8 len)
{
struct i2c_msg msg[] = {
{ .addr = state->config->demod_address, .flags = 0, .buf = &reg, .len = 1 },
{ .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = buf, .len = len }
};
int err;
memset(buf,0,len);
if ((err = i2c_transfer (state->i2c, msg, 2)) != 2) {
deb_info("%s: i2c read error (addr %02x, reg %02x, err == %i)\n",
__func__, state->config->demod_address, reg, err);
return -EREMOTEIO;
}
deb_i2c("i2c rd %02x: ",reg);
dbufout(buf,len,deb_i2c);
deb_i2c("\n");
return 0;
}
static int bcm3510_writeB(struct bcm3510_state *state, u8 reg, bcm3510_register_value v)
{
return bcm3510_writebytes(state,reg,&v.raw,1);
}
static int bcm3510_readB(struct bcm3510_state *state, u8 reg, bcm3510_register_value *v)
{
return bcm3510_readbytes(state,reg,&v->raw,1);
}
/* Host Access Buffer transfers */
static int bcm3510_hab_get_response(struct bcm3510_state *st, u8 *buf, int len)
{
bcm3510_register_value v;
int ret,i;
v.HABADR_a6.HABADR = 0;
if ((ret = bcm3510_writeB(st,0xa6,v)) < 0)
return ret;
for (i = 0; i < len; i++) {
if ((ret = bcm3510_readB(st,0xa7,&v)) < 0)
return ret;
buf[i] = v.HABDATA_a7;
}
return 0;
}
static int bcm3510_hab_send_request(struct bcm3510_state *st, u8 *buf, int len)
{
bcm3510_register_value v,hab;
int ret,i;
unsigned long t;
/* Check if any previous HAB request still needs to be serviced by the
* Acquisition Processor before sending new request */
if ((ret = bcm3510_readB(st,0xa8,&v)) < 0)
return ret;
if (v.HABSTAT_a8.HABR) {
deb_info("HAB is running already - clearing it.\n");
v.HABSTAT_a8.HABR = 0;
bcm3510_writeB(st,0xa8,v);
// return -EBUSY;
}
/* Send the start HAB Address (automatically incremented after write of
* HABDATA) and write the HAB Data */
hab.HABADR_a6.HABADR = 0;
if ((ret = bcm3510_writeB(st,0xa6,hab)) < 0)
return ret;
for (i = 0; i < len; i++) {
hab.HABDATA_a7 = buf[i];
if ((ret = bcm3510_writeB(st,0xa7,hab)) < 0)
return ret;
}
/* Set the HABR bit to indicate AP request in progress (LBHABR allows HABR to
* be written) */
v.raw = 0; v.HABSTAT_a8.HABR = 1; v.HABSTAT_a8.LDHABR = 1;
if ((ret = bcm3510_writeB(st,0xa8,v)) < 0)
return ret;
/* Polling method: Wait until the AP finishes processing the HAB request */
t = jiffies + 1*HZ;
while (time_before(jiffies, t)) {
deb_info("waiting for HAB to complete\n");
msleep(10);
if ((ret = bcm3510_readB(st,0xa8,&v)) < 0)
return ret;
if (!v.HABSTAT_a8.HABR)
return 0;
}
deb_info("send_request execution timed out.\n");
return -ETIMEDOUT;
}
static int bcm3510_do_hab_cmd(struct bcm3510_state *st, u8 cmd, u8 msgid, u8 *obuf, u8 olen, u8 *ibuf, u8 ilen)
{
u8 ob[MAX_XFER_SIZE], ib[MAX_XFER_SIZE];
int ret = 0;
if (ilen + 2 > sizeof(ib)) {
deb_hab("do_hab_cmd: ilen=%d is too big!\n", ilen);
return -EINVAL;
}
if (olen + 2 > sizeof(ob)) {
deb_hab("do_hab_cmd: olen=%d is too big!\n", olen);
return -EINVAL;
}
ob[0] = cmd;
ob[1] = msgid;
memcpy(&ob[2],obuf,olen);
deb_hab("hab snd: ");
dbufout(ob,olen+2,deb_hab);
deb_hab("\n");
if (mutex_lock_interruptible(&st->hab_mutex) < 0)
return -EAGAIN;
if ((ret = bcm3510_hab_send_request(st, ob, olen+2)) < 0 ||
(ret = bcm3510_hab_get_response(st, ib, ilen+2)) < 0)
goto error;
deb_hab("hab get: ");
dbufout(ib,ilen+2,deb_hab);
deb_hab("\n");
memcpy(ibuf,&ib[2],ilen);
error:
mutex_unlock(&st->hab_mutex);
return ret;
}
#if 0
/* not needed, we use a semaphore to prevent HAB races */
static int bcm3510_is_ap_ready(struct bcm3510_state *st)
{
bcm3510_register_value ap,hab;
int ret;
if ((ret = bcm3510_readB(st,0xa8,&hab)) < 0 ||
(ret = bcm3510_readB(st,0xa2,&ap) < 0))
return ret;
if (ap.APSTAT1_a2.RESET || ap.APSTAT1_a2.IDLE || ap.APSTAT1_a2.STOP || hab.HABSTAT_a8.HABR) {
deb_info("AP is busy\n");
return -EBUSY;
}
return 0;
}
#endif
static int bcm3510_bert_reset(struct bcm3510_state *st)
{
bcm3510_register_value b;
int ret;
if ((ret = bcm3510_readB(st,0xfa,&b)) < 0)
return ret;
b.BERCTL_fa.RESYNC = 0; bcm3510_writeB(st,0xfa,b);
b.BERCTL_fa.RESYNC = 1; bcm3510_writeB(st,0xfa,b);
b.BERCTL_fa.RESYNC = 0; bcm3510_writeB(st,0xfa,b);
b.BERCTL_fa.CNTCTL = 1; b.BERCTL_fa.BITCNT = 1; bcm3510_writeB(st,0xfa,b);
/* clear residual bit counter TODO */
return 0;
}
static int bcm3510_refresh_state(struct bcm3510_state *st)
{
if (time_after(jiffies,st->next_status_check)) {
bcm3510_do_hab_cmd(st, CMD_STATUS, MSGID_STATUS1, NULL,0, (u8 *)&st->status1, sizeof(st->status1));
bcm3510_do_hab_cmd(st, CMD_STATUS, MSGID_STATUS2, NULL,0, (u8 *)&st->status2, sizeof(st->status2));
st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
}
return 0;
}
static int bcm3510_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct bcm3510_state* st = fe->demodulator_priv;
bcm3510_refresh_state(st);
*status = 0;
if (st->status1.STATUS1.RECEIVER_LOCK)
*status |= FE_HAS_LOCK | FE_HAS_SYNC;
if (st->status1.STATUS1.FEC_LOCK)
*status |= FE_HAS_VITERBI;
if (st->status1.STATUS1.OUT_PLL_LOCK)
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
if (*status & FE_HAS_LOCK)
st->status_check_interval = 1500;
else /* more frequently checks if no lock has been achieved yet */
st->status_check_interval = 500;
deb_info("real_status: %02x\n",*status);
return 0;
}
static int bcm3510_read_ber(struct dvb_frontend* fe, u32* ber)
{
struct bcm3510_state* st = fe->demodulator_priv;
bcm3510_refresh_state(st);
*ber = (st->status2.LDBER0 << 16) | (st->status2.LDBER1 << 8) | st->status2.LDBER2;
return 0;
}
static int bcm3510_read_unc(struct dvb_frontend* fe, u32* unc)
{
struct bcm3510_state* st = fe->demodulator_priv;
bcm3510_refresh_state(st);
*unc = (st->status2.LDUERC0 << 8) | st->status2.LDUERC1;
return 0;
}
static int bcm3510_read_signal_strength(struct dvb_frontend* fe, u16* strength)
{
struct bcm3510_state* st = fe->demodulator_priv;
s32 t;
bcm3510_refresh_state(st);
t = st->status2.SIGNAL;
if (t > 190)
t = 190;
if (t < 90)
t = 90;
t -= 90;
t = t * 0xff / 100;
/* normalize if necessary */
*strength = (t << 8) | t;
return 0;
}
static int bcm3510_read_snr(struct dvb_frontend* fe, u16* snr)
{
struct bcm3510_state* st = fe->demodulator_priv;
bcm3510_refresh_state(st);
*snr = st->status1.SNR_EST0*1000 + ((st->status1.SNR_EST1*1000) >> 8);
return 0;
}
/* tuner frontend programming */
static int bcm3510_tuner_cmd(struct bcm3510_state* st,u8 bc, u16 n, u8 a)
{
struct bcm3510_hab_cmd_tune c;
memset(&c,0,sizeof(struct bcm3510_hab_cmd_tune));
/* I2C Mode disabled, set 16 control / Data pairs */
c.length = 0x10;
c.clock_width = 0;
/* CS1, CS0, DATA, CLK bits control the tuner RF_AGC_SEL pin is set to
* logic high (as Configuration) */
c.misc = 0x10;
/* Set duration of the initial state of TUNCTL = 3.34 micro Sec */
c.TUNCTL_state = 0x40;
/* PRESCALER DIVIDE RATIO | BC1_2_3_4; (band switch), 1stosc REFERENCE COUNTER REF_S12 and REF_S11 */
c.ctl_dat[0].ctrl.size = BITS_8;
c.ctl_dat[0].data = 0x80 | bc;
/* Control DATA pin, 1stosc REFERENCE COUNTER REF_S10 to REF_S3 */
c.ctl_dat[1].ctrl.size = BITS_8;
c.ctl_dat[1].data = 4;
/* set CONTROL BIT 1 to 1, 1stosc REFERENCE COUNTER REF_S2 to REF_S1 */
c.ctl_dat[2].ctrl.size = BITS_3;
c.ctl_dat[2].data = 0x20;
/* control CS0 pin, pulse byte ? */
c.ctl_dat[3].ctrl.size = BITS_3;
c.ctl_dat[3].ctrl.clk_off = 1;
c.ctl_dat[3].ctrl.cs0 = 1;
c.ctl_dat[3].data = 0x40;
/* PGM_S18 to PGM_S11 */
c.ctl_dat[4].ctrl.size = BITS_8;
c.ctl_dat[4].data = n >> 3;
/* PGM_S10 to PGM_S8, SWL_S7 to SWL_S3 */
c.ctl_dat[5].ctrl.size = BITS_8;
c.ctl_dat[5].data = ((n & 0x7) << 5) | (a >> 2);
/* SWL_S2 and SWL_S1, set CONTROL BIT 2 to 0 */
c.ctl_dat[6].ctrl.size = BITS_3;
c.ctl_dat[6].data = (a << 6) & 0xdf;
/* control CS0 pin, pulse byte ? */
c.ctl_dat[7].ctrl.size = BITS_3;
c.ctl_dat[7].ctrl.clk_off = 1;
c.ctl_dat[7].ctrl.cs0 = 1;
c.ctl_dat[7].data = 0x40;
/* PRESCALER DIVIDE RATIO, 2ndosc REFERENCE COUNTER REF_S12 and REF_S11 */
c.ctl_dat[8].ctrl.size = BITS_8;
c.ctl_dat[8].data = 0x80;
/* 2ndosc REFERENCE COUNTER REF_S10 to REF_S3 */
c.ctl_dat[9].ctrl.size = BITS_8;
c.ctl_dat[9].data = 0x10;
/* set CONTROL BIT 1 to 1, 2ndosc REFERENCE COUNTER REF_S2 to REF_S1 */
c.ctl_dat[10].ctrl.size = BITS_3;
c.ctl_dat[10].data = 0x20;
/* pulse byte */
c.ctl_dat[11].ctrl.size = BITS_3;
c.ctl_dat[11].ctrl.clk_off = 1;
c.ctl_dat[11].ctrl.cs1 = 1;
c.ctl_dat[11].data = 0x40;
/* PGM_S18 to PGM_S11 */
c.ctl_dat[12].ctrl.size = BITS_8;
c.ctl_dat[12].data = 0x2a;
/* PGM_S10 to PGM_S8 and SWL_S7 to SWL_S3 */
c.ctl_dat[13].ctrl.size = BITS_8;
c.ctl_dat[13].data = 0x8e;
/* SWL_S2 and SWL_S1 and set CONTROL BIT 2 to 0 */
c.ctl_dat[14].ctrl.size = BITS_3;
c.ctl_dat[14].data = 0;
/* Pulse Byte */
c.ctl_dat[15].ctrl.size = BITS_3;
c.ctl_dat[15].ctrl.clk_off = 1;
c.ctl_dat[15].ctrl.cs1 = 1;
c.ctl_dat[15].data = 0x40;
return bcm3510_do_hab_cmd(st,CMD_TUNE, MSGID_TUNE,(u8 *) &c,sizeof(c), NULL, 0);
}
static int bcm3510_set_freq(struct bcm3510_state* st,u32 freq)
{
u8 bc,a;
u16 n;
s32 YIntercept,Tfvco1;
freq /= 1000;
deb_info("%dkHz:",freq);
/* set Band Switch */
if (freq <= 168000)
bc = 0x1c;
else if (freq <= 378000)
bc = 0x2c;
else
bc = 0x30;
if (freq >= 470000) {
freq -= 470001;
YIntercept = 18805;
} else if (freq >= 90000) {
freq -= 90001;
YIntercept = 15005;
} else if (freq >= 76000){
freq -= 76001;
YIntercept = 14865;
} else {
freq -= 54001;
YIntercept = 14645;
}
Tfvco1 = (((freq/6000)*60 + YIntercept)*4)/10;
n = Tfvco1 >> 6;
a = Tfvco1 & 0x3f;
deb_info(" BC1_2_3_4: %x, N: %x A: %x\n", bc, n, a);
if (n >= 16 && n <= 2047)
return bcm3510_tuner_cmd(st,bc,n,a);
return -EINVAL;
}
static int bcm3510_set_frontend(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct bcm3510_state* st = fe->demodulator_priv;
struct bcm3510_hab_cmd_ext_acquire cmd;
struct bcm3510_hab_cmd_bert_control bert;
int ret;
memset(&cmd,0,sizeof(cmd));
switch (c->modulation) {
case QAM_256:
cmd.ACQUIRE0.MODE = 0x1;
cmd.ACQUIRE1.SYM_RATE = 0x1;
cmd.ACQUIRE1.IF_FREQ = 0x1;
break;
case QAM_64:
cmd.ACQUIRE0.MODE = 0x2;
cmd.ACQUIRE1.SYM_RATE = 0x2;
cmd.ACQUIRE1.IF_FREQ = 0x1;
break;
#if 0
case QAM_256:
cmd.ACQUIRE0.MODE = 0x3;
break;
case QAM_128:
cmd.ACQUIRE0.MODE = 0x4;
break;
case QAM_64:
cmd.ACQUIRE0.MODE = 0x5;
break;
case QAM_32:
cmd.ACQUIRE0.MODE = 0x6;
break;
case QAM_16:
cmd.ACQUIRE0.MODE = 0x7;
break;
#endif
case VSB_8:
cmd.ACQUIRE0.MODE = 0x8;
cmd.ACQUIRE1.SYM_RATE = 0x0;
cmd.ACQUIRE1.IF_FREQ = 0x0;
break;
case VSB_16:
cmd.ACQUIRE0.MODE = 0x9;
cmd.ACQUIRE1.SYM_RATE = 0x0;
cmd.ACQUIRE1.IF_FREQ = 0x0;
break;
default:
return -EINVAL;
}
cmd.ACQUIRE0.OFFSET = 0;
cmd.ACQUIRE0.NTSCSWEEP = 1;
cmd.ACQUIRE0.FA = 1;
cmd.ACQUIRE0.BW = 0;
/* if (enableOffset) {
cmd.IF_OFFSET0 = xx;
cmd.IF_OFFSET1 = xx;
cmd.SYM_OFFSET0 = xx;
cmd.SYM_OFFSET1 = xx;
if (enableNtscSweep) {
cmd.NTSC_OFFSET0;
cmd.NTSC_OFFSET1;
}
} */
bcm3510_do_hab_cmd(st, CMD_ACQUIRE, MSGID_EXT_TUNER_ACQUIRE, (u8 *) &cmd, sizeof(cmd), NULL, 0);
/* doing it with different MSGIDs, data book and source differs */
bert.BE = 0;
bert.unused = 0;
bcm3510_do_hab_cmd(st, CMD_STATE_CONTROL, MSGID_BERT_CONTROL, (u8 *) &bert, sizeof(bert), NULL, 0);
bcm3510_do_hab_cmd(st, CMD_STATE_CONTROL, MSGID_BERT_SET, (u8 *) &bert, sizeof(bert), NULL, 0);
bcm3510_bert_reset(st);
ret = bcm3510_set_freq(st, c->frequency);
if (ret < 0)
return ret;
memset(&st->status1,0,sizeof(st->status1));
memset(&st->status2,0,sizeof(st->status2));
st->status_check_interval = 500;
/* Give the AP some time */
msleep(200);
return 0;
}
static int bcm3510_sleep(struct dvb_frontend* fe)
{
return 0;
}
static int bcm3510_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *s)
{
s->min_delay_ms = 1000;
s->step_size = 0;
s->max_drift = 0;
return 0;
}
static void bcm3510_release(struct dvb_frontend* fe)
{
struct bcm3510_state* state = fe->demodulator_priv;
kfree(state);
}
/* firmware download:
* firmware file is build up like this:
* 16bit addr, 16bit length, 8byte of length
*/
#define BCM3510_DEFAULT_FIRMWARE "dvb-fe-bcm3510-01.fw"
static int bcm3510_write_ram(struct bcm3510_state *st, u16 addr, const u8 *b,
u16 len)
{
int ret = 0,i;
bcm3510_register_value vH, vL,vD;
vH.MADRH_a9 = addr >> 8;
vL.MADRL_aa = addr;
if ((ret = bcm3510_writeB(st,0xa9,vH)) < 0) return ret;
if ((ret = bcm3510_writeB(st,0xaa,vL)) < 0) return ret;
for (i = 0; i < len; i++) {
vD.MDATA_ab = b[i];
if ((ret = bcm3510_writeB(st,0xab,vD)) < 0)
return ret;
}
return 0;
}
static int bcm3510_download_firmware(struct dvb_frontend* fe)
{
struct bcm3510_state* st = fe->demodulator_priv;
const struct firmware *fw;
u16 addr,len;
const u8 *b;
int ret,i;
deb_info("requesting firmware\n");
if ((ret = st->config->request_firmware(fe, &fw, BCM3510_DEFAULT_FIRMWARE)) < 0) {
err("could not load firmware (%s): %d",BCM3510_DEFAULT_FIRMWARE,ret);
return ret;
}
deb_info("got firmware: %zu\n", fw->size);
b = fw->data;
for (i = 0; i < fw->size;) {
addr = le16_to_cpu(*((__le16 *)&b[i]));
len = le16_to_cpu(*((__le16 *)&b[i+2]));
deb_info("firmware chunk, addr: 0x%04x, len: 0x%04x, total length: 0x%04zx\n",addr,len,fw->size);
if ((ret = bcm3510_write_ram(st,addr,&b[i+4],len)) < 0) {
err("firmware download failed: %d\n",ret);
release_firmware(fw);
return ret;
}
i += 4 + len;
}
release_firmware(fw);
deb_info("firmware download successfully completed\n");
return 0;
}
static int bcm3510_check_firmware_version(struct bcm3510_state *st)
{
struct bcm3510_hab_cmd_get_version_info ver;
bcm3510_do_hab_cmd(st,CMD_GET_VERSION_INFO,MSGID_GET_VERSION_INFO,NULL,0,(u8*)&ver,sizeof(ver));
deb_info("Version information: 0x%02x 0x%02x 0x%02x 0x%02x\n",
ver.microcode_version, ver.script_version, ver.config_version, ver.demod_version);
if (ver.script_version == BCM3510_DEF_SCRIPT_VERSION &&
ver.config_version == BCM3510_DEF_CONFIG_VERSION &&
ver.demod_version == BCM3510_DEF_DEMOD_VERSION)
return 0;
deb_info("version check failed\n");
return -ENODEV;
}
/* (un)resetting the AP */
static int bcm3510_reset(struct bcm3510_state *st)
{
int ret;
unsigned long t;
bcm3510_register_value v;
bcm3510_readB(st,0xa0,&v); v.HCTL1_a0.RESET = 1;
if ((ret = bcm3510_writeB(st,0xa0,v)) < 0)
return ret;
t = jiffies + 3*HZ;
while (time_before(jiffies, t)) {
msleep(10);
if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
return ret;
if (v.APSTAT1_a2.RESET)
return 0;
}
deb_info("reset timed out\n");
return -ETIMEDOUT;
}
static int bcm3510_clear_reset(struct bcm3510_state *st)
{
bcm3510_register_value v;
int ret;
unsigned long t;
v.raw = 0;
if ((ret = bcm3510_writeB(st,0xa0,v)) < 0)
return ret;
t = jiffies + 3*HZ;
while (time_before(jiffies, t)) {
msleep(10);
if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
return ret;
/* verify that reset is cleared */
if (!v.APSTAT1_a2.RESET)
return 0;
}
deb_info("reset clear timed out\n");
return -ETIMEDOUT;
}
static int bcm3510_init_cold(struct bcm3510_state *st)
{
int ret;
bcm3510_register_value v;
/* read Acquisation Processor status register and check it is not in RUN mode */
if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
return ret;
if (v.APSTAT1_a2.RUN) {
deb_info("AP is already running - firmware already loaded.\n");
return 0;
}
deb_info("reset?\n");
if ((ret = bcm3510_reset(st)) < 0)
return ret;
deb_info("tristate?\n");
/* tri-state */
v.TSTCTL_2e.CTL = 0;
if ((ret = bcm3510_writeB(st,0x2e,v)) < 0)
return ret;
deb_info("firmware?\n");
if ((ret = bcm3510_download_firmware(&st->frontend)) < 0 ||
(ret = bcm3510_clear_reset(st)) < 0)
return ret;
/* anything left here to Let the acquisition processor begin execution at program counter 0000 ??? */
return 0;
}
static int bcm3510_init(struct dvb_frontend* fe)
{
struct bcm3510_state* st = fe->demodulator_priv;
bcm3510_register_value j;
struct bcm3510_hab_cmd_set_agc c;
int ret;
if ((ret = bcm3510_readB(st,0xca,&j)) < 0)
return ret;
deb_info("JDEC: %02x\n",j.raw);
switch (j.JDEC_ca.JDEC) {
case JDEC_WAIT_AT_RAM:
deb_info("attempting to download firmware\n");
if ((ret = bcm3510_init_cold(st)) < 0)
return ret;
fallthrough;
case JDEC_EEPROM_LOAD_WAIT:
deb_info("firmware is loaded\n");
bcm3510_check_firmware_version(st);
break;
default:
return -ENODEV;
}
memset(&c,0,1);
c.SEL = 1;
bcm3510_do_hab_cmd(st,CMD_AUTO_PARAM,MSGID_SET_RF_AGC_SEL,(u8 *)&c,sizeof(c),NULL,0);
return 0;
}
static const struct dvb_frontend_ops bcm3510_ops;
struct dvb_frontend* bcm3510_attach(const struct bcm3510_config *config,
struct i2c_adapter *i2c)
{
struct bcm3510_state* state = NULL;
int ret;
bcm3510_register_value v;
/* allocate memory for the internal state */
state = kzalloc(sizeof(struct bcm3510_state), GFP_KERNEL);
if (state == NULL)
goto error;
/* setup the state */
state->config = config;
state->i2c = i2c;
/* create dvb_frontend */
memcpy(&state->frontend.ops, &bcm3510_ops, sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
mutex_init(&state->hab_mutex);
if ((ret = bcm3510_readB(state,0xe0,&v)) < 0)
goto error;
deb_info("Revision: 0x%1x, Layer: 0x%1x.\n",v.REVID_e0.REV,v.REVID_e0.LAYER);
if ((v.REVID_e0.REV != 0x1 && v.REVID_e0.LAYER != 0xb) && /* cold */
(v.REVID_e0.REV != 0x8 && v.REVID_e0.LAYER != 0x0)) /* warm */
goto error;
info("Revision: 0x%1x, Layer: 0x%1x.",v.REVID_e0.REV,v.REVID_e0.LAYER);
bcm3510_reset(state);
return &state->frontend;
error:
kfree(state);
return NULL;
}
6.5.5
2023-10-24 12:59:35 +02:00
EXPORT_SYMBOL_GPL(bcm3510_attach);
Initial commit
2023-08-30 17:31:07 +02:00
static const struct dvb_frontend_ops bcm3510_ops = {
.delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
.info = {
.name = "Broadcom BCM3510 VSB/QAM frontend",
.frequency_min_hz = 54 * MHz,
.frequency_max_hz = 803 * MHz,
.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_8VSB | FE_CAN_16VSB |
FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_128 | FE_CAN_QAM_256
},
.release = bcm3510_release,
.init = bcm3510_init,
.sleep = bcm3510_sleep,
.set_frontend = bcm3510_set_frontend,
.get_tune_settings = bcm3510_get_tune_settings,
.read_status = bcm3510_read_status,
.read_ber = bcm3510_read_ber,
.read_signal_strength = bcm3510_read_signal_strength,
.read_snr = bcm3510_read_snr,
.read_ucblocks = bcm3510_read_unc,
};
MODULE_DESCRIPTION("Broadcom BCM3510 ATSC (8VSB/16VSB & ITU J83 AnnexB FEC QAM64/256) demodulator driver");
MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
MODULE_LICENSE("GPL");