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linux/drivers/media/dvb-frontends/bcm3510.c
Mauro Carvalho Chehab 0df289a209 [media] dvb: Get rid of typedev usage for enums 
The DVB API was originally defined using typedefs. This is against
Kernel CodingStyle, and there's no good usage here. While we can't
remove its usage on userspace, we can avoid its usage in Kernelspace.

So, let's do it.

This patch was generated by this shell script:

	for j in $(grep typedef include/uapi/linux/dvb/frontend.h |cut -d' ' -f 3); do for i in $(find drivers/media -name '*.[ch]' -type f) $(find drivers/staging/media -name '*.[ch]' -type f); do sed "s,${j}_t,enum $j," <$i >a && mv a $i; done; done

While here, make CodingStyle fixes on the affected lines.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> # for drivers/media/firewire/*
2015-06-09 17:47:35 -03:00

870 lines
22 KiB
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/*
* 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@desy.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 "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;
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);
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;
case JDEC_EEPROM_LOAD_WAIT: /* fall-through is wanted */
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 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;
}
EXPORT_SYMBOL(bcm3510_attach);
static struct dvb_frontend_ops bcm3510_ops = {
.delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
.info = {
.name = "Broadcom BCM3510 VSB/QAM frontend",
.frequency_min = 54000000,
.frequency_max = 803000000,
/* stepsize is just a guess */
.frequency_stepsize = 0,
.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@desy.de>");
MODULE_LICENSE("GPL");
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