You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
544 lines
12 KiB
544 lines
12 KiB
/*
|
|
* Sharp VA3A5JZ921 One Seg Broadcast Module driver
|
|
* This device is labeled as just S. 921 at the top of the frontend can
|
|
*
|
|
* Copyright (C) 2009-2010 Mauro Carvalho Chehab
|
|
* Copyright (C) 2009-2010 Douglas Landgraf <dougsland@redhat.com>
|
|
*
|
|
* Developed for Leadership SBTVD 1seg device sold in Brazil
|
|
*
|
|
* Frontend module based on cx24123 driver, getting some info from
|
|
* the old s921 driver.
|
|
*
|
|
* FIXME: Need to port to DVB v5.2 API
|
|
*
|
|
* 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 version 2.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <asm/div64.h>
|
|
|
|
#include "dvb_frontend.h"
|
|
#include "s921.h"
|
|
|
|
static int debug = 1;
|
|
module_param(debug, int, 0644);
|
|
MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
|
|
|
|
#define rc(args...) do { \
|
|
printk(KERN_ERR "s921: " args); \
|
|
} while (0)
|
|
|
|
#define dprintk(args...) \
|
|
do { \
|
|
if (debug) { \
|
|
printk(KERN_DEBUG "s921: %s: ", __func__); \
|
|
printk(args); \
|
|
} \
|
|
} while (0)
|
|
|
|
struct s921_state {
|
|
struct i2c_adapter *i2c;
|
|
const struct s921_config *config;
|
|
|
|
struct dvb_frontend frontend;
|
|
|
|
/* The Demod can't easily provide these, we cache them */
|
|
u32 currentfreq;
|
|
};
|
|
|
|
/*
|
|
* Various tuner defaults need to be established for a given frequency kHz.
|
|
* fixme: The bounds on the bands do not match the doc in real life.
|
|
* fixme: Some of them have been moved, other might need adjustment.
|
|
*/
|
|
static struct s921_bandselect_val {
|
|
u32 freq_low;
|
|
u8 band_reg;
|
|
} s921_bandselect[] = {
|
|
{ 0, 0x7b },
|
|
{ 485140000, 0x5b },
|
|
{ 515140000, 0x3b },
|
|
{ 545140000, 0x1b },
|
|
{ 599140000, 0xfb },
|
|
{ 623140000, 0xdb },
|
|
{ 659140000, 0xbb },
|
|
{ 713140000, 0x9b },
|
|
};
|
|
|
|
struct regdata {
|
|
u8 reg;
|
|
u8 data;
|
|
};
|
|
|
|
static struct regdata s921_init[] = {
|
|
{ 0x01, 0x80 }, /* Probably, a reset sequence */
|
|
{ 0x01, 0x40 },
|
|
{ 0x01, 0x80 },
|
|
{ 0x01, 0x40 },
|
|
|
|
{ 0x02, 0x00 },
|
|
{ 0x03, 0x40 },
|
|
{ 0x04, 0x01 },
|
|
{ 0x05, 0x00 },
|
|
{ 0x06, 0x00 },
|
|
{ 0x07, 0x00 },
|
|
{ 0x08, 0x00 },
|
|
{ 0x09, 0x00 },
|
|
{ 0x0a, 0x00 },
|
|
{ 0x0b, 0x5a },
|
|
{ 0x0c, 0x00 },
|
|
{ 0x0d, 0x00 },
|
|
{ 0x0f, 0x00 },
|
|
{ 0x13, 0x1b },
|
|
{ 0x14, 0x80 },
|
|
{ 0x15, 0x40 },
|
|
{ 0x17, 0x70 },
|
|
{ 0x18, 0x01 },
|
|
{ 0x19, 0x12 },
|
|
{ 0x1a, 0x01 },
|
|
{ 0x1b, 0x12 },
|
|
{ 0x1c, 0xa0 },
|
|
{ 0x1d, 0x00 },
|
|
{ 0x1e, 0x0a },
|
|
{ 0x1f, 0x08 },
|
|
{ 0x20, 0x40 },
|
|
{ 0x21, 0xff },
|
|
{ 0x22, 0x4c },
|
|
{ 0x23, 0x4e },
|
|
{ 0x24, 0x4c },
|
|
{ 0x25, 0x00 },
|
|
{ 0x26, 0x00 },
|
|
{ 0x27, 0xf4 },
|
|
{ 0x28, 0x60 },
|
|
{ 0x29, 0x88 },
|
|
{ 0x2a, 0x40 },
|
|
{ 0x2b, 0x40 },
|
|
{ 0x2c, 0xff },
|
|
{ 0x2d, 0x00 },
|
|
{ 0x2e, 0xff },
|
|
{ 0x2f, 0x00 },
|
|
{ 0x30, 0x20 },
|
|
{ 0x31, 0x06 },
|
|
{ 0x32, 0x0c },
|
|
{ 0x34, 0x0f },
|
|
{ 0x37, 0xfe },
|
|
{ 0x38, 0x00 },
|
|
{ 0x39, 0x63 },
|
|
{ 0x3a, 0x10 },
|
|
{ 0x3b, 0x10 },
|
|
{ 0x47, 0x00 },
|
|
{ 0x49, 0xe5 },
|
|
{ 0x4b, 0x00 },
|
|
{ 0x50, 0xc0 },
|
|
{ 0x52, 0x20 },
|
|
{ 0x54, 0x5a },
|
|
{ 0x55, 0x5b },
|
|
{ 0x56, 0x40 },
|
|
{ 0x57, 0x70 },
|
|
{ 0x5c, 0x50 },
|
|
{ 0x5d, 0x00 },
|
|
{ 0x62, 0x17 },
|
|
{ 0x63, 0x2f },
|
|
{ 0x64, 0x6f },
|
|
{ 0x68, 0x00 },
|
|
{ 0x69, 0x89 },
|
|
{ 0x6a, 0x00 },
|
|
{ 0x6b, 0x00 },
|
|
{ 0x6c, 0x00 },
|
|
{ 0x6d, 0x00 },
|
|
{ 0x6e, 0x00 },
|
|
{ 0x70, 0x10 },
|
|
{ 0x71, 0x00 },
|
|
{ 0x75, 0x00 },
|
|
{ 0x76, 0x30 },
|
|
{ 0x77, 0x01 },
|
|
{ 0xaf, 0x00 },
|
|
{ 0xb0, 0xa0 },
|
|
{ 0xb2, 0x3d },
|
|
{ 0xb3, 0x25 },
|
|
{ 0xb4, 0x8b },
|
|
{ 0xb5, 0x4b },
|
|
{ 0xb6, 0x3f },
|
|
{ 0xb7, 0xff },
|
|
{ 0xb8, 0xff },
|
|
{ 0xb9, 0xfc },
|
|
{ 0xba, 0x00 },
|
|
{ 0xbb, 0x00 },
|
|
{ 0xbc, 0x00 },
|
|
{ 0xd0, 0x30 },
|
|
{ 0xe4, 0x84 },
|
|
{ 0xf0, 0x48 },
|
|
{ 0xf1, 0x19 },
|
|
{ 0xf2, 0x5a },
|
|
{ 0xf3, 0x8e },
|
|
{ 0xf4, 0x2d },
|
|
{ 0xf5, 0x07 },
|
|
{ 0xf6, 0x5a },
|
|
{ 0xf7, 0xba },
|
|
{ 0xf8, 0xd7 },
|
|
};
|
|
|
|
static struct regdata s921_prefreq[] = {
|
|
{ 0x47, 0x60 },
|
|
{ 0x68, 0x00 },
|
|
{ 0x69, 0x89 },
|
|
{ 0xf0, 0x48 },
|
|
{ 0xf1, 0x19 },
|
|
};
|
|
|
|
static struct regdata s921_postfreq[] = {
|
|
{ 0xf5, 0xae },
|
|
{ 0xf6, 0xb7 },
|
|
{ 0xf7, 0xba },
|
|
{ 0xf8, 0xd7 },
|
|
{ 0x68, 0x0a },
|
|
{ 0x69, 0x09 },
|
|
};
|
|
|
|
static int s921_i2c_writereg(struct s921_state *state,
|
|
u8 i2c_addr, int reg, int data)
|
|
{
|
|
u8 buf[] = { reg, data };
|
|
struct i2c_msg msg = {
|
|
.addr = i2c_addr, .flags = 0, .buf = buf, .len = 2
|
|
};
|
|
int rc;
|
|
|
|
rc = i2c_transfer(state->i2c, &msg, 1);
|
|
if (rc != 1) {
|
|
printk("%s: writereg rcor(rc == %i, reg == 0x%02x, data == 0x%02x)\n",
|
|
__func__, rc, reg, data);
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int s921_i2c_writeregdata(struct s921_state *state, u8 i2c_addr,
|
|
struct regdata *rd, int size)
|
|
{
|
|
int i, rc;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
rc = s921_i2c_writereg(state, i2c_addr, rd[i].reg, rd[i].data);
|
|
if (rc < 0)
|
|
return rc;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int s921_i2c_readreg(struct s921_state *state, u8 i2c_addr, u8 reg)
|
|
{
|
|
u8 val;
|
|
int rc;
|
|
struct i2c_msg msg[] = {
|
|
{ .addr = i2c_addr, .flags = 0, .buf = ®, .len = 1 },
|
|
{ .addr = i2c_addr, .flags = I2C_M_RD, .buf = &val, .len = 1 }
|
|
};
|
|
|
|
rc = i2c_transfer(state->i2c, msg, 2);
|
|
|
|
if (rc != 2) {
|
|
rc("%s: reg=0x%x (rcor=%d)\n", __func__, reg, rc);
|
|
return rc;
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
#define s921_readreg(state, reg) \
|
|
s921_i2c_readreg(state, state->config->demod_address, reg)
|
|
#define s921_writereg(state, reg, val) \
|
|
s921_i2c_writereg(state, state->config->demod_address, reg, val)
|
|
#define s921_writeregdata(state, regdata) \
|
|
s921_i2c_writeregdata(state, state->config->demod_address, \
|
|
regdata, ARRAY_SIZE(regdata))
|
|
|
|
static int s921_pll_tune(struct dvb_frontend *fe)
|
|
{
|
|
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
|
|
struct s921_state *state = fe->demodulator_priv;
|
|
int band, rc, i;
|
|
unsigned long f_offset;
|
|
u8 f_switch;
|
|
u64 offset;
|
|
|
|
dprintk("frequency=%i\n", p->frequency);
|
|
|
|
for (band = 0; band < ARRAY_SIZE(s921_bandselect); band++)
|
|
if (p->frequency < s921_bandselect[band].freq_low)
|
|
break;
|
|
band--;
|
|
|
|
if (band < 0) {
|
|
rc("%s: frequency out of range\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
f_switch = s921_bandselect[band].band_reg;
|
|
|
|
offset = ((u64)p->frequency) * 258;
|
|
do_div(offset, 6000000);
|
|
f_offset = ((unsigned long)offset) + 2321;
|
|
|
|
rc = s921_writeregdata(state, s921_prefreq);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = s921_writereg(state, 0xf2, (f_offset >> 8) & 0xff);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = s921_writereg(state, 0xf3, f_offset & 0xff);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = s921_writereg(state, 0xf4, f_switch);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = s921_writeregdata(state, s921_postfreq);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
for (i = 0 ; i < 6; i++) {
|
|
rc = s921_readreg(state, 0x80);
|
|
dprintk("status 0x80: %02x\n", rc);
|
|
}
|
|
rc = s921_writereg(state, 0x01, 0x40);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = s921_readreg(state, 0x01);
|
|
dprintk("status 0x01: %02x\n", rc);
|
|
|
|
rc = s921_readreg(state, 0x80);
|
|
dprintk("status 0x80: %02x\n", rc);
|
|
|
|
rc = s921_readreg(state, 0x80);
|
|
dprintk("status 0x80: %02x\n", rc);
|
|
|
|
rc = s921_readreg(state, 0x32);
|
|
dprintk("status 0x32: %02x\n", rc);
|
|
|
|
dprintk("pll tune band=%d, pll=%d\n", f_switch, (int)f_offset);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int s921_initfe(struct dvb_frontend *fe)
|
|
{
|
|
struct s921_state *state = fe->demodulator_priv;
|
|
int rc;
|
|
|
|
dprintk("\n");
|
|
|
|
rc = s921_writeregdata(state, s921_init);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int s921_read_status(struct dvb_frontend *fe, enum fe_status *status)
|
|
{
|
|
struct s921_state *state = fe->demodulator_priv;
|
|
int regstatus, rc;
|
|
|
|
*status = 0;
|
|
|
|
rc = s921_readreg(state, 0x81);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
regstatus = rc << 8;
|
|
|
|
rc = s921_readreg(state, 0x82);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
regstatus |= rc;
|
|
|
|
dprintk("status = %04x\n", regstatus);
|
|
|
|
/* Full Sync - We don't know what each bit means on regs 0x81/0x82 */
|
|
if ((regstatus & 0xff) == 0x40) {
|
|
*status = FE_HAS_SIGNAL |
|
|
FE_HAS_CARRIER |
|
|
FE_HAS_VITERBI |
|
|
FE_HAS_SYNC |
|
|
FE_HAS_LOCK;
|
|
} else if (regstatus & 0x40) {
|
|
/* This is close to Full Sync, but not enough to get useful info */
|
|
*status = FE_HAS_SIGNAL |
|
|
FE_HAS_CARRIER |
|
|
FE_HAS_VITERBI |
|
|
FE_HAS_SYNC;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int s921_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
|
|
{
|
|
enum fe_status status;
|
|
struct s921_state *state = fe->demodulator_priv;
|
|
int rc;
|
|
|
|
/* FIXME: Use the proper register for it... 0x80? */
|
|
rc = s921_read_status(fe, &status);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
*strength = (status & FE_HAS_LOCK) ? 0xffff : 0;
|
|
|
|
dprintk("strength = 0x%04x\n", *strength);
|
|
|
|
rc = s921_readreg(state, 0x01);
|
|
dprintk("status 0x01: %02x\n", rc);
|
|
|
|
rc = s921_readreg(state, 0x80);
|
|
dprintk("status 0x80: %02x\n", rc);
|
|
|
|
rc = s921_readreg(state, 0x32);
|
|
dprintk("status 0x32: %02x\n", rc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int s921_set_frontend(struct dvb_frontend *fe)
|
|
{
|
|
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
|
|
struct s921_state *state = fe->demodulator_priv;
|
|
int rc;
|
|
|
|
dprintk("\n");
|
|
|
|
/* FIXME: We don't know how to use non-auto mode */
|
|
|
|
rc = s921_pll_tune(fe);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
state->currentfreq = p->frequency;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int s921_get_frontend(struct dvb_frontend *fe,
|
|
struct dtv_frontend_properties *p)
|
|
{
|
|
struct s921_state *state = fe->demodulator_priv;
|
|
|
|
/* FIXME: Probably it is possible to get it from regs f1 and f2 */
|
|
p->frequency = state->currentfreq;
|
|
p->delivery_system = SYS_ISDBT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int s921_tune(struct dvb_frontend *fe,
|
|
bool re_tune,
|
|
unsigned int mode_flags,
|
|
unsigned int *delay,
|
|
enum fe_status *status)
|
|
{
|
|
int rc = 0;
|
|
|
|
dprintk("\n");
|
|
|
|
if (re_tune)
|
|
rc = s921_set_frontend(fe);
|
|
|
|
if (!(mode_flags & FE_TUNE_MODE_ONESHOT))
|
|
s921_read_status(fe, status);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int s921_get_algo(struct dvb_frontend *fe)
|
|
{
|
|
return DVBFE_ALGO_HW;
|
|
}
|
|
|
|
static void s921_release(struct dvb_frontend *fe)
|
|
{
|
|
struct s921_state *state = fe->demodulator_priv;
|
|
|
|
dprintk("\n");
|
|
kfree(state);
|
|
}
|
|
|
|
static const struct dvb_frontend_ops s921_ops;
|
|
|
|
struct dvb_frontend *s921_attach(const struct s921_config *config,
|
|
struct i2c_adapter *i2c)
|
|
{
|
|
/* allocate memory for the internal state */
|
|
struct s921_state *state =
|
|
kzalloc(sizeof(struct s921_state), GFP_KERNEL);
|
|
|
|
dprintk("\n");
|
|
if (!state) {
|
|
rc("Unable to kzalloc\n");
|
|
return NULL;
|
|
}
|
|
|
|
/* setup the state */
|
|
state->config = config;
|
|
state->i2c = i2c;
|
|
|
|
/* create dvb_frontend */
|
|
memcpy(&state->frontend.ops, &s921_ops,
|
|
sizeof(struct dvb_frontend_ops));
|
|
state->frontend.demodulator_priv = state;
|
|
|
|
return &state->frontend;
|
|
}
|
|
EXPORT_SYMBOL(s921_attach);
|
|
|
|
static const struct dvb_frontend_ops s921_ops = {
|
|
.delsys = { SYS_ISDBT },
|
|
/* Use dib8000 values per default */
|
|
.info = {
|
|
.name = "Sharp S921",
|
|
.frequency_min = 470000000,
|
|
/*
|
|
* Max should be 770MHz instead, according with Sharp docs,
|
|
* but Leadership doc says it works up to 806 MHz. This is
|
|
* required to get channel 69, used in Brazil
|
|
*/
|
|
.frequency_max = 806000000,
|
|
.frequency_tolerance = 0,
|
|
.caps = FE_CAN_INVERSION_AUTO |
|
|
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 |
|
|
FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
|
|
FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_RECOVER |
|
|
FE_CAN_HIERARCHY_AUTO,
|
|
},
|
|
|
|
.release = s921_release,
|
|
|
|
.init = s921_initfe,
|
|
.set_frontend = s921_set_frontend,
|
|
.get_frontend = s921_get_frontend,
|
|
.read_status = s921_read_status,
|
|
.read_signal_strength = s921_read_signal_strength,
|
|
.tune = s921_tune,
|
|
.get_frontend_algo = s921_get_algo,
|
|
};
|
|
|
|
MODULE_DESCRIPTION("DVB Frontend module for Sharp S921 hardware");
|
|
MODULE_AUTHOR("Mauro Carvalho Chehab");
|
|
MODULE_AUTHOR("Douglas Landgraf <dougsland@redhat.com>");
|
|
MODULE_LICENSE("GPL");
|
|
|