提交 47b75ec1 编写于 作者: P Palash Bandyopadhyay 提交者: Mauro Carvalho Chehab

[media] s5h1432: Add new s5h1432 driver

Introduce a new driver for the s5h1432
Signed-off-by: NPalash Bandyopadhyay <palash.bandyopadhyay@conexant.com>
Signed-off-by: NDevin Heitmueller <dheitmueller@hauppauge.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
上级 e4115bb2
......@@ -257,6 +257,13 @@ config DVB_CX22702
help
A DVB-T tuner module. Say Y when you want to support this frontend.
config DVB_S5H1432
tristate "Samsung s5h1432 demodulator (OFDM)"
depends on DVB_CORE && I2C
default m if DVB_FE_CUSTOMISE
help
A DVB-T tuner module. Say Y when you want to support this frontend.
config DVB_DRX397XD
tristate "Micronas DRX3975D/DRX3977D based"
depends on DVB_CORE && I2C
......
......@@ -16,6 +16,7 @@ obj-$(CONFIG_DVB_STB0899) += stb0899.o
obj-$(CONFIG_DVB_STB6100) += stb6100.o
obj-$(CONFIG_DVB_SP8870) += sp8870.o
obj-$(CONFIG_DVB_CX22700) += cx22700.o
obj-$(CONFIG_DVB_S5H1432) += s5h1432.o
obj-$(CONFIG_DVB_CX24110) += cx24110.o
obj-$(CONFIG_DVB_TDA8083) += tda8083.o
obj-$(CONFIG_DVB_L64781) += l64781.o
......
/*
Samsung s5h1432 DVB-T demodulator driver
Copyright (C) 2009 Bill Liu <Bill.Liu@Conexant.com>
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/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include "dvb_frontend.h"
#include "s5h1432.h"
struct s5h1432_state {
struct i2c_adapter *i2c;
/* configuration settings */
const struct s5h1432_config *config;
struct dvb_frontend frontend;
fe_modulation_t current_modulation;
unsigned int first_tune:1;
u32 current_frequency;
int if_freq;
u8 inversion;
};
static int debug;
#define dprintk(arg...) do { \
if (debug) \
printk(arg); \
} while (0)
static int s5h1432_writereg(struct s5h1432_state *state,
u8 addr, u8 reg, u8 data)
{
int ret;
u8 buf[] = { reg, data };
struct i2c_msg msg = { .addr = addr, .flags = 0, .buf = buf, .len = 2 };
ret = i2c_transfer(state->i2c, &msg, 1);
if (ret != 1)
printk(KERN_ERR "%s: writereg error 0x%02x 0x%02x 0x%04x, "
"ret == %i)\n", __func__, addr, reg, data, ret);
return (ret != 1) ? -1 : 0;
}
static u8 s5h1432_readreg(struct s5h1432_state *state, u8 addr, u8 reg)
{
int ret;
u8 b0[] = { reg };
u8 b1[] = { 0 };
struct i2c_msg msg[] = {
{ .addr = addr, .flags = 0, .buf = b0, .len = 1 },
{ .addr = addr, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
ret = i2c_transfer(state->i2c, msg, 2);
if (ret != 2)
printk(KERN_ERR "%s: readreg error (ret == %i)\n",
__func__, ret);
return b1[0];
}
static int s5h1432_sleep(struct dvb_frontend *fe)
{
return 0;
}
static int s5h1432_set_channel_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
{
struct s5h1432_state *state = fe->demodulator_priv;
u8 reg = 0;
/* Register [0x2E] bit 3:2 : 8MHz = 0; 7MHz = 1; 6MHz = 2*/
reg = s5h1432_readreg(state, S5H1432_I2C_TOP_ADDR, 0x2E);
reg &= ~(0x0C);
switch (bandwidth) {
case 6:
reg |= 0x08;
break;
case 7:
reg |= 0x04;
break;
case 8:
reg |= 0x00;
break;
default:
return 0;
}
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x2E, reg);
return 1;
}
static int s5h1432_set_IF(struct dvb_frontend *fe, u32 ifFreqHz)
{
struct s5h1432_state *state = fe->demodulator_priv;
switch (ifFreqHz) {
case TAIWAN_HI_IF_FREQ_44_MHZ:
{
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x55);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x55);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0x15);
break;
}
case EUROPE_HI_IF_FREQ_36_MHZ:
{
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x00);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x00);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0x40);
break;
}
case IF_FREQ_6_MHZ:
{
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x00);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x00);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0xe0);
break;
}
case IF_FREQ_3point3_MHZ:
{
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x66);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x66);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0xEE);
break;
}
case IF_FREQ_3point5_MHZ:
{
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x55);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x55);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0xED);
break;
}
case IF_FREQ_4_MHZ:
{
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0xAA);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0xAA);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0xEA);
break;
}
default:
{
u32 value = 0;
value = (u32) (((48000 - (ifFreqHz / 1000)) * 512 *
(u32) 32768) / (48 * 1000));
printk(KERN_INFO "Default IFFreq %d :reg value = 0x%x \n",
ifFreqHz, value);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 ,
(u8) value & 0xFF);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 ,
(u8)(value>>8) & 0xFF);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 ,
(u8)(value>>16) & 0xFF);
break;
}
}
return 1;
}
/* Talk to the demod, set the FEC, GUARD, QAM settings etc */
static int s5h1432_set_frontend(struct dvb_frontend *fe,
struct dvb_frontend_parameters *p)
{
u32 dvb_bandwidth = 8;
struct s5h1432_state *state = fe->demodulator_priv;
if (p->frequency == state->current_frequency) {
/*current_frequency = p->frequency;*/
/*state->current_frequency = p->frequency;*/
} else {
fe->ops.tuner_ops.set_params(fe, p); msleep(300);
s5h1432_set_channel_bandwidth(fe, dvb_bandwidth);
switch (p->u.ofdm.bandwidth) {
case BANDWIDTH_6_MHZ:
dvb_bandwidth = 6;
s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
break;
case BANDWIDTH_7_MHZ:
dvb_bandwidth = 7;
s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
break;
case BANDWIDTH_8_MHZ:
dvb_bandwidth = 8;
s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
break;
default:
return 0;
}
/*fe->ops.tuner_ops.set_params(fe, p);*/
/*Soft Reset chip*/
msleep(30);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a);
msleep(30);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b);
s5h1432_set_channel_bandwidth(fe, dvb_bandwidth);
switch (p->u.ofdm.bandwidth) {
case BANDWIDTH_6_MHZ:
dvb_bandwidth = 6;
s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
break;
case BANDWIDTH_7_MHZ:
dvb_bandwidth = 7;
s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
break;
case BANDWIDTH_8_MHZ:
dvb_bandwidth = 8;
s5h1432_set_IF(fe, IF_FREQ_4_MHZ);
break;
default:
return 0;
}
/*fe->ops.tuner_ops.set_params(fe,p);*/
/*Soft Reset chip*/
msleep(30);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a);
msleep(30);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b);
}
state->current_frequency = p->frequency;
return 0;
}
static int s5h1432_init(struct dvb_frontend *fe)
{
struct s5h1432_state *state = fe->demodulator_priv;
u8 reg = 0;
state->current_frequency = 0;
printk(KERN_INFO " s5h1432_init().\n");
/*Set VSB mode as default, this also does a soft reset*/
/*Initialize registers*/
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x04, 0xa8);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x05, 0x01);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x07, 0x70);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x19, 0x80);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1b, 0x9D);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1c, 0x30);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1d, 0x20);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1e, 0x1B);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x2e, 0x40);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x42, 0x84);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x50, 0x5a);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x5a, 0xd3);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x68, 0x50);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xb8, 0x3c);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xc4, 0x10);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xcc, 0x9c);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xDA, 0x00);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe1, 0x94);
/* s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xf4, 0xa1);*/
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xf9, 0x00);
/*For NXP tuner*/
/*Set 3.3MHz as default IF frequency*/
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x66);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x66);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0xEE);
/* Set reg 0x1E to get the full dynamic range */
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1e, 0x31);
/*Mode setting in demod*/
reg = s5h1432_readreg(state, S5H1432_I2C_TOP_ADDR, 0x42);
reg |= 0x80;
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x42, reg);
/*Serial mode*/
/*Soft Reset chip*/
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a);
msleep(30);
s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b);
return 0;
}
static int s5h1432_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
return 0;
}
static int s5h1432_read_signal_strength(struct dvb_frontend *fe,
u16 *signal_strength)
{
return 0;
}
static int s5h1432_read_snr(struct dvb_frontend *fe, u16 *snr)
{
return 0;
}
static int s5h1432_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
return 0;
}
static int s5h1432_read_ber(struct dvb_frontend *fe, u32 *ber)
{
return 0;
}
static int s5h1432_get_frontend(struct dvb_frontend *fe,
struct dvb_frontend_parameters *p)
{
return 0;
}
static int s5h1432_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *tune)
{
return 0;
}
static void s5h1432_release(struct dvb_frontend *fe)
{
struct s5h1432_state *state = fe->demodulator_priv;
kfree(state);
}
static struct dvb_frontend_ops s5h1432_ops;
struct dvb_frontend *s5h1432_attach(const struct s5h1432_config *config,
struct i2c_adapter *i2c)
{
struct s5h1432_state *state = NULL;
printk(KERN_INFO " Enter s5h1432_attach(). attach success!\n");
/* allocate memory for the internal state */
state = kmalloc(sizeof(struct s5h1432_state), GFP_KERNEL);
if (state == NULL)
goto error;
/* setup the state */
state->config = config;
state->i2c = i2c;
state->current_modulation = QAM_16;
state->inversion = state->config->inversion;
/* create dvb_frontend */
memcpy(&state->frontend.ops, &s5h1432_ops,
sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
return &state->frontend;
error:
kfree(state);
return NULL;
}
EXPORT_SYMBOL(s5h1432_attach);
static struct dvb_frontend_ops s5h1432_ops = {
.info = {
.name = "Samsung s5h1432 DVB-T Frontend",
.type = FE_OFDM,
.frequency_min = 177000000,
.frequency_max = 858000000,
.frequency_stepsize = 166666,
.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 | FE_CAN_QAM_AUTO |
FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER
},
.init = s5h1432_init,
.sleep = s5h1432_sleep,
.set_frontend = s5h1432_set_frontend,
.get_frontend = s5h1432_get_frontend,
.get_tune_settings = s5h1432_get_tune_settings,
.read_status = s5h1432_read_status,
.read_ber = s5h1432_read_ber,
.read_signal_strength = s5h1432_read_signal_strength,
.read_snr = s5h1432_read_snr,
.read_ucblocks = s5h1432_read_ucblocks,
.release = s5h1432_release,
};
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Enable verbose debug messages");
MODULE_DESCRIPTION("Samsung s5h1432 DVB-T Demodulator driver");
MODULE_AUTHOR("Bill Liu");
MODULE_LICENSE("GPL");
/*
* Local variables:
* c-basic-offset: 8
*/
/*
Samsung s5h1432 VSB/QAM demodulator driver
Copyright (C) 2009 Bill Liu <Bill.Liu@Conexant.com>
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.
*/
#ifndef __S5H1432_H__
#define __S5H1432_H__
#include <linux/dvb/frontend.h>
#define S5H1432_I2C_TOP_ADDR (0x02 >> 1)
#define TAIWAN_HI_IF_FREQ_44_MHZ 44000000
#define EUROPE_HI_IF_FREQ_36_MHZ 36000000
#define IF_FREQ_6_MHZ 6000000
#define IF_FREQ_3point3_MHZ 3300000
#define IF_FREQ_3point5_MHZ 3500000
#define IF_FREQ_4_MHZ 4000000
struct s5h1432_config {
/* serial/parallel output */
#define S5H1432_PARALLEL_OUTPUT 0
#define S5H1432_SERIAL_OUTPUT 1
u8 output_mode;
/* GPIO Setting */
#define S5H1432_GPIO_OFF 0
#define S5H1432_GPIO_ON 1
u8 gpio;
/* MPEG signal timing */
#define S5H1432_MPEGTIMING_CONTINOUS_INVERTING_CLOCK 0
#define S5H1432_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK 1
#define S5H1432_MPEGTIMING_NONCONTINOUS_INVERTING_CLOCK 2
#define S5H1432_MPEGTIMING_NONCONTINOUS_NONINVERTING_CLOCK 3
u16 mpeg_timing;
/* IF Freq for QAM and VSB in KHz */
#define S5H1432_IF_3250 3250
#define S5H1432_IF_3500 3500
#define S5H1432_IF_4000 4000
#define S5H1432_IF_5380 5380
#define S5H1432_IF_44000 44000
#define S5H1432_VSB_IF_DEFAULT s5h1432_IF_44000
#define S5H1432_QAM_IF_DEFAULT s5h1432_IF_44000
u16 qam_if;
u16 vsb_if;
/* Spectral Inversion */
#define S5H1432_INVERSION_OFF 0
#define S5H1432_INVERSION_ON 1
u8 inversion;
/* Return lock status based on tuner lock, or demod lock */
#define S5H1432_TUNERLOCKING 0
#define S5H1432_DEMODLOCKING 1
u8 status_mode;
};
#if defined(CONFIG_DVB_S5H1432) || \
(defined(CONFIG_DVB_S5H1432_MODULE) && defined(MODULE))
extern struct dvb_frontend *s5h1432_attach(const struct s5h1432_config *config,
struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *s5h1432_attach(
const struct s5h1432_config *config,
struct i2c_adapter *i2c)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif /* CONFIG_DVB_s5h1432 */
#endif /* __s5h1432_H__ */
/*
* Local variables:
* c-basic-offset: 8
*/
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