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linux/drivers/media/dvb/frontends/mb86a20s.c
Mauro Carvalho Chehab 7c61d80a9b [media] dvb: don't require a parameter for get_frontend 
Just like set_frontend, use the dvb cache properties for get_frontend.
This is more consistent, as both functions are now symetric. Also,
at the places get_frontend is called, it makes sense to update the
cache.

Most of this patch were generated by this small perl script:

	while (<>) { $file .= $_; }
	if ($file =~ m/\.get_frontend\s*=\s*([\d\w_]+)/) {
		my $get = $1;
		$file =~ s/($get)(\s*\([^\,\)]+)\,\s*struct\s+dtv_frontend_properties\s*\*\s*([_\d\w]+)\)\s*\{/\1\2)\n{\n\tstruct dtv_frontend_properties *\3 = &fe->dtv_property_cache;/g;
	}
	print $file;

Of course, the changes at dvb_frontend.[ch] were made by hand,
as well as the changes on a few other places, where get_frontend()
is called internally inside the driver.

On some places, get_frontend() were just a void function. Those
occurrences were removed, as the DVB core handles such cases.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-31 10:28:23 -02:00

646 lines
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/*
* Fujitu mb86a20s ISDB-T/ISDB-Tsb Module driver
*
* Copyright (C) 2010 Mauro Carvalho Chehab <mchehab@redhat.com>
* Copyright (C) 2009-2010 Douglas Landgraf <dougsland@redhat.com>
*
* 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 "mb86a20s.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 "mb86a20s: " args); \
} while (0)
#define dprintk(args...) \
do { \
if (debug) { \
printk(KERN_DEBUG "mb86a20s: %s: ", __func__); \
printk(args); \
} \
} while (0)
struct mb86a20s_state {
struct i2c_adapter *i2c;
const struct mb86a20s_config *config;
struct dvb_frontend frontend;
bool need_init;
};
struct regdata {
u8 reg;
u8 data;
};
/*
* Initialization sequence: Use whatevere default values that PV SBTVD
* does on its initialisation, obtained via USB snoop
*/
static struct regdata mb86a20s_init[] = {
{ 0x70, 0x0f },
{ 0x70, 0xff },
{ 0x08, 0x01 },
{ 0x09, 0x3e },
{ 0x50, 0xd1 },
{ 0x51, 0x22 },
{ 0x39, 0x01 },
{ 0x71, 0x00 },
{ 0x28, 0x2a },
{ 0x29, 0x00 },
{ 0x2a, 0xff },
{ 0x2b, 0x80 },
{ 0x28, 0x20 },
{ 0x29, 0x33 },
{ 0x2a, 0xdf },
{ 0x2b, 0xa9 },
{ 0x3b, 0x21 },
{ 0x3c, 0x3a },
{ 0x01, 0x0d },
{ 0x04, 0x08 },
{ 0x05, 0x05 },
{ 0x04, 0x0e },
{ 0x05, 0x00 },
{ 0x04, 0x0f },
{ 0x05, 0x14 },
{ 0x04, 0x0b },
{ 0x05, 0x8c },
{ 0x04, 0x00 },
{ 0x05, 0x00 },
{ 0x04, 0x01 },
{ 0x05, 0x07 },
{ 0x04, 0x02 },
{ 0x05, 0x0f },
{ 0x04, 0x03 },
{ 0x05, 0xa0 },
{ 0x04, 0x09 },
{ 0x05, 0x00 },
{ 0x04, 0x0a },
{ 0x05, 0xff },
{ 0x04, 0x27 },
{ 0x05, 0x64 },
{ 0x04, 0x28 },
{ 0x05, 0x00 },
{ 0x04, 0x1e },
{ 0x05, 0xff },
{ 0x04, 0x29 },
{ 0x05, 0x0a },
{ 0x04, 0x32 },
{ 0x05, 0x0a },
{ 0x04, 0x14 },
{ 0x05, 0x02 },
{ 0x04, 0x04 },
{ 0x05, 0x00 },
{ 0x04, 0x05 },
{ 0x05, 0x22 },
{ 0x04, 0x06 },
{ 0x05, 0x0e },
{ 0x04, 0x07 },
{ 0x05, 0xd8 },
{ 0x04, 0x12 },
{ 0x05, 0x00 },
{ 0x04, 0x13 },
{ 0x05, 0xff },
{ 0x52, 0x01 },
{ 0x50, 0xa7 },
{ 0x51, 0x00 },
{ 0x50, 0xa8 },
{ 0x51, 0xff },
{ 0x50, 0xa9 },
{ 0x51, 0xff },
{ 0x50, 0xaa },
{ 0x51, 0x00 },
{ 0x50, 0xab },
{ 0x51, 0xff },
{ 0x50, 0xac },
{ 0x51, 0xff },
{ 0x50, 0xad },
{ 0x51, 0x00 },
{ 0x50, 0xae },
{ 0x51, 0xff },
{ 0x50, 0xaf },
{ 0x51, 0xff },
{ 0x5e, 0x07 },
{ 0x50, 0xdc },
{ 0x51, 0x01 },
{ 0x50, 0xdd },
{ 0x51, 0xf4 },
{ 0x50, 0xde },
{ 0x51, 0x01 },
{ 0x50, 0xdf },
{ 0x51, 0xf4 },
{ 0x50, 0xe0 },
{ 0x51, 0x01 },
{ 0x50, 0xe1 },
{ 0x51, 0xf4 },
{ 0x50, 0xb0 },
{ 0x51, 0x07 },
{ 0x50, 0xb2 },
{ 0x51, 0xff },
{ 0x50, 0xb3 },
{ 0x51, 0xff },
{ 0x50, 0xb4 },
{ 0x51, 0xff },
{ 0x50, 0xb5 },
{ 0x51, 0xff },
{ 0x50, 0xb6 },
{ 0x51, 0xff },
{ 0x50, 0xb7 },
{ 0x51, 0xff },
{ 0x50, 0x50 },
{ 0x51, 0x02 },
{ 0x50, 0x51 },
{ 0x51, 0x04 },
{ 0x45, 0x04 },
{ 0x48, 0x04 },
{ 0x50, 0xd5 },
{ 0x51, 0x01 }, /* Serial */
{ 0x50, 0xd6 },
{ 0x51, 0x1f },
{ 0x50, 0xd2 },
{ 0x51, 0x03 },
{ 0x50, 0xd7 },
{ 0x51, 0x3f },
{ 0x1c, 0x01 },
{ 0x28, 0x06 },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x03 },
{ 0x28, 0x07 },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x0d },
{ 0x28, 0x08 },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x02 },
{ 0x28, 0x09 },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x01 },
{ 0x28, 0x0a },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x21 },
{ 0x28, 0x0b },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x29 },
{ 0x28, 0x0c },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x16 },
{ 0x28, 0x0d },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x31 },
{ 0x28, 0x0e },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x0e },
{ 0x28, 0x0f },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x4e },
{ 0x28, 0x10 },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x46 },
{ 0x28, 0x11 },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x0f },
{ 0x28, 0x12 },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x56 },
{ 0x28, 0x13 },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x35 },
{ 0x28, 0x14 },
{ 0x29, 0x00 },
{ 0x2a, 0x01 },
{ 0x2b, 0xbe },
{ 0x28, 0x15 },
{ 0x29, 0x00 },
{ 0x2a, 0x01 },
{ 0x2b, 0x84 },
{ 0x28, 0x16 },
{ 0x29, 0x00 },
{ 0x2a, 0x03 },
{ 0x2b, 0xee },
{ 0x28, 0x17 },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x98 },
{ 0x28, 0x18 },
{ 0x29, 0x00 },
{ 0x2a, 0x00 },
{ 0x2b, 0x9f },
{ 0x28, 0x19 },
{ 0x29, 0x00 },
{ 0x2a, 0x07 },
{ 0x2b, 0xb2 },
{ 0x28, 0x1a },
{ 0x29, 0x00 },
{ 0x2a, 0x06 },
{ 0x2b, 0xc2 },
{ 0x28, 0x1b },
{ 0x29, 0x00 },
{ 0x2a, 0x07 },
{ 0x2b, 0x4a },
{ 0x28, 0x1c },
{ 0x29, 0x00 },
{ 0x2a, 0x01 },
{ 0x2b, 0xbc },
{ 0x28, 0x1d },
{ 0x29, 0x00 },
{ 0x2a, 0x04 },
{ 0x2b, 0xba },
{ 0x28, 0x1e },
{ 0x29, 0x00 },
{ 0x2a, 0x06 },
{ 0x2b, 0x14 },
{ 0x50, 0x1e },
{ 0x51, 0x5d },
{ 0x50, 0x22 },
{ 0x51, 0x00 },
{ 0x50, 0x23 },
{ 0x51, 0xc8 },
{ 0x50, 0x24 },
{ 0x51, 0x00 },
{ 0x50, 0x25 },
{ 0x51, 0xf0 },
{ 0x50, 0x26 },
{ 0x51, 0x00 },
{ 0x50, 0x27 },
{ 0x51, 0xc3 },
{ 0x50, 0x39 },
{ 0x51, 0x02 },
{ 0x50, 0xd5 },
{ 0x51, 0x01 },
{ 0xd0, 0x00 },
};
static struct regdata mb86a20s_reset_reception[] = {
{ 0x70, 0xf0 },
{ 0x70, 0xff },
{ 0x08, 0x01 },
{ 0x08, 0x00 },
};
static int mb86a20s_i2c_writereg(struct mb86a20s_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 error (rc == %i, reg == 0x%02x,"
" data == 0x%02x)\n", __func__, rc, reg, data);
return rc;
}
return 0;
}
static int mb86a20s_i2c_writeregdata(struct mb86a20s_state *state,
u8 i2c_addr, struct regdata *rd, int size)
{
int i, rc;
for (i = 0; i < size; i++) {
rc = mb86a20s_i2c_writereg(state, i2c_addr, rd[i].reg,
rd[i].data);
if (rc < 0)
return rc;
}
return 0;
}
static int mb86a20s_i2c_readreg(struct mb86a20s_state *state,
u8 i2c_addr, u8 reg)
{
u8 val;
int rc;
struct i2c_msg msg[] = {
{ .addr = i2c_addr, .flags = 0, .buf = &reg, .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 (error=%d)\n", __func__, reg, rc);
return rc;
}
return val;
}
#define mb86a20s_readreg(state, reg) \
mb86a20s_i2c_readreg(state, state->config->demod_address, reg)
#define mb86a20s_writereg(state, reg, val) \
mb86a20s_i2c_writereg(state, state->config->demod_address, reg, val)
#define mb86a20s_writeregdata(state, regdata) \
mb86a20s_i2c_writeregdata(state, state->config->demod_address, \
regdata, ARRAY_SIZE(regdata))
static int mb86a20s_initfe(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
int rc;
u8 regD5 = 1;
dprintk("\n");
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
/* Initialize the frontend */
rc = mb86a20s_writeregdata(state, mb86a20s_init);
if (rc < 0)
goto err;
if (!state->config->is_serial) {
regD5 &= ~1;
rc = mb86a20s_writereg(state, 0x50, 0xd5);
if (rc < 0)
goto err;
rc = mb86a20s_writereg(state, 0x51, regD5);
if (rc < 0)
goto err;
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
err:
if (rc < 0) {
state->need_init = true;
printk(KERN_INFO "mb86a20s: Init failed. Will try again later\n");
} else {
state->need_init = false;
dprintk("Initialization succeeded.\n");
}
return rc;
}
static int mb86a20s_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
struct mb86a20s_state *state = fe->demodulator_priv;
unsigned rf_max, rf_min, rf;
u8 val;
dprintk("\n");
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
/* Does a binary search to get RF strength */
rf_max = 0xfff;
rf_min = 0;
do {
rf = (rf_max + rf_min) / 2;
mb86a20s_writereg(state, 0x04, 0x1f);
mb86a20s_writereg(state, 0x05, rf >> 8);
mb86a20s_writereg(state, 0x04, 0x20);
mb86a20s_writereg(state, 0x04, rf);
val = mb86a20s_readreg(state, 0x02);
if (val & 0x08)
rf_min = (rf_max + rf_min) / 2;
else
rf_max = (rf_max + rf_min) / 2;
if (rf_max - rf_min < 4) {
*strength = (((rf_max + rf_min) / 2) * 65535) / 4095;
break;
}
} while (1);
dprintk("signal strength = %d\n", *strength);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
return 0;
}
static int mb86a20s_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
struct mb86a20s_state *state = fe->demodulator_priv;
u8 val;
dprintk("\n");
*status = 0;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
val = mb86a20s_readreg(state, 0x0a) & 0xf;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if (val >= 2)
*status |= FE_HAS_SIGNAL;
if (val >= 4)
*status |= FE_HAS_CARRIER;
if (val >= 5)
*status |= FE_HAS_VITERBI;
if (val >= 7)
*status |= FE_HAS_SYNC;
if (val >= 8) /* Maybe 9? */
*status |= FE_HAS_LOCK;
dprintk("val = %d, status = 0x%02x\n", val, *status);
return 0;
}
static int mb86a20s_set_frontend(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
int rc;
#if 0
/*
* FIXME: Properly implement the set frontend properties
*/
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
#endif
dprintk("\n");
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
dprintk("Calling tuner set parameters\n");
fe->ops.tuner_ops.set_params(fe);
/*
* Make it more reliable: if, for some reason, the initial
* device initialization doesn't happen, initialize it when
* a SBTVD parameters are adjusted.
*
* Unfortunately, due to a hard to track bug at tda829x/tda18271,
* the agc callback logic is not called during DVB attach time,
* causing mb86a20s to not be initialized with Kworld SBTVD.
* So, this hack is needed, in order to make Kworld SBTVD to work.
*/
if (state->need_init)
mb86a20s_initfe(fe);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
rc = mb86a20s_writeregdata(state, mb86a20s_reset_reception);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
return rc;
}
static int mb86a20s_get_frontend(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
/* FIXME: For now, it does nothing */
p->bandwidth_hz = 6000000;
p->transmission_mode = TRANSMISSION_MODE_AUTO;
p->guard_interval = GUARD_INTERVAL_AUTO;
p->isdbt_partial_reception = 0;
return 0;
}
static int mb86a20s_tune(struct dvb_frontend *fe,
bool re_tune,
unsigned int mode_flags,
unsigned int *delay,
fe_status_t *status)
{
int rc = 0;
dprintk("\n");
if (re_tune)
rc = mb86a20s_set_frontend(fe);
if (!(mode_flags & FE_TUNE_MODE_ONESHOT))
mb86a20s_read_status(fe, status);
return rc;
}
static void mb86a20s_release(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
dprintk("\n");
kfree(state);
}
static struct dvb_frontend_ops mb86a20s_ops;
struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
struct i2c_adapter *i2c)
{
u8 rev;
/* allocate memory for the internal state */
struct mb86a20s_state *state =
kzalloc(sizeof(struct mb86a20s_state), GFP_KERNEL);
dprintk("\n");
if (state == NULL) {
rc("Unable to kzalloc\n");
goto error;
}
/* setup the state */
state->config = config;
state->i2c = i2c;
/* create dvb_frontend */
memcpy(&state->frontend.ops, &mb86a20s_ops,
sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
/* Check if it is a mb86a20s frontend */
rev = mb86a20s_readreg(state, 0);
if (rev == 0x13) {
printk(KERN_INFO "Detected a Fujitsu mb86a20s frontend\n");
} else {
printk(KERN_ERR "Frontend revision %d is unknown - aborting.\n",
rev);
goto error;
}
return &state->frontend;
error:
kfree(state);
return NULL;
}
EXPORT_SYMBOL(mb86a20s_attach);
static struct dvb_frontend_ops mb86a20s_ops = {
.delsys = { SYS_ISDBT },
/* Use dib8000 values per default */
.info = {
.name = "Fujitsu mb86A20s",
.type = FE_OFDM,
.caps = FE_CAN_INVERSION_AUTO | FE_CAN_RECOVER |
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_TRANSMISSION_MODE_AUTO | FE_CAN_QAM_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO,
/* Actually, those values depend on the used tuner */
.frequency_min = 45000000,
.frequency_max = 864000000,
.frequency_stepsize = 62500,
},
.release = mb86a20s_release,
.init = mb86a20s_initfe,
.set_frontend = mb86a20s_set_frontend,
.get_frontend = mb86a20s_get_frontend,
.read_status = mb86a20s_read_status,
.read_signal_strength = mb86a20s_read_signal_strength,
.tune = mb86a20s_tune,
};
MODULE_DESCRIPTION("DVB Frontend module for Fujitsu mb86A20s hardware");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
MODULE_LICENSE("GPL");
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