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tegrakernel/kernel/kernel-4.9/drivers/media/dvb-frontends/lg2160.c

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initial commit tegra kernel 32.6.1
2022-02-16 09:13:02 -06:00
/*
* Support for LG2160 - ATSC/MH
*
* Copyright (C) 2010 Michael Krufky <mkrufky@linuxtv.org>
*
* 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/jiffies.h>
#include <linux/dvb/frontend.h>
#include "lg2160.h"
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))");
#define DBG_INFO 1
#define DBG_REG 2
#define lg_printk(kern, fmt, arg...) \
printk(kern "%s: " fmt, __func__, ##arg)
#define lg_info(fmt, arg...) printk(KERN_INFO "lg2160: " fmt, ##arg)
#define lg_warn(fmt, arg...) lg_printk(KERN_WARNING, fmt, ##arg)
#define lg_err(fmt, arg...) lg_printk(KERN_ERR, fmt, ##arg)
#define lg_dbg(fmt, arg...) if (debug & DBG_INFO) \
lg_printk(KERN_DEBUG, fmt, ##arg)
#define lg_reg(fmt, arg...) if (debug & DBG_REG) \
lg_printk(KERN_DEBUG, fmt, ##arg)
#define lg_fail(ret) \
({ \
int __ret; \
__ret = (ret < 0); \
if (__ret) \
lg_err("error %d on line %d\n", ret, __LINE__); \
__ret; \
})
struct lg216x_state {
struct i2c_adapter *i2c_adap;
const struct lg2160_config *cfg;
struct dvb_frontend frontend;
u32 current_frequency;
u8 parade_id;
u8 fic_ver;
unsigned int last_reset;
};
/* ------------------------------------------------------------------------ */
static int lg216x_write_reg(struct lg216x_state *state, u16 reg, u8 val)
{
int ret;
u8 buf[] = { reg >> 8, reg & 0xff, val };
struct i2c_msg msg = {
.addr = state->cfg->i2c_addr, .flags = 0,
.buf = buf, .len = 3,
};
lg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val);
ret = i2c_transfer(state->i2c_adap, &msg, 1);
if (ret != 1) {
lg_err("error (addr %02x %02x <- %02x, err = %i)\n",
msg.buf[0], msg.buf[1], msg.buf[2], ret);
if (ret < 0)
return ret;
else
return -EREMOTEIO;
}
return 0;
}
static int lg216x_read_reg(struct lg216x_state *state, u16 reg, u8 *val)
{
int ret;
u8 reg_buf[] = { reg >> 8, reg & 0xff };
struct i2c_msg msg[] = {
{ .addr = state->cfg->i2c_addr,
.flags = 0, .buf = reg_buf, .len = 2 },
{ .addr = state->cfg->i2c_addr,
.flags = I2C_M_RD, .buf = val, .len = 1 },
};
lg_reg("reg: 0x%04x\n", reg);
ret = i2c_transfer(state->i2c_adap, msg, 2);
if (ret != 2) {
lg_err("error (addr %02x reg %04x error (ret == %i)\n",
state->cfg->i2c_addr, reg, ret);
if (ret < 0)
return ret;
else
return -EREMOTEIO;
}
return 0;
}
struct lg216x_reg {
u16 reg;
u8 val;
};
static int lg216x_write_regs(struct lg216x_state *state,
struct lg216x_reg *regs, int len)
{
int i, ret;
lg_reg("writing %d registers...\n", len);
for (i = 0; i < len; i++) {
ret = lg216x_write_reg(state, regs[i].reg, regs[i].val);
if (lg_fail(ret))
return ret;
}
return 0;
}
static int lg216x_set_reg_bit(struct lg216x_state *state,
u16 reg, int bit, int onoff)
{
u8 val;
int ret;
lg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff);
ret = lg216x_read_reg(state, reg, &val);
if (lg_fail(ret))
goto fail;
val &= ~(1 << bit);
val |= (onoff & 1) << bit;
ret = lg216x_write_reg(state, reg, val);
lg_fail(ret);
fail:
return ret;
}
/* ------------------------------------------------------------------------ */
static int lg216x_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
{
struct lg216x_state *state = fe->demodulator_priv;
int ret;
if (state->cfg->deny_i2c_rptr)
return 0;
lg_dbg("(%d)\n", enable);
ret = lg216x_set_reg_bit(state, 0x0000, 0, enable ? 0 : 1);
msleep(1);
return ret;
}
static int lg216x_soft_reset(struct lg216x_state *state)
{
int ret;
lg_dbg("\n");
ret = lg216x_write_reg(state, 0x0002, 0x00);
if (lg_fail(ret))
goto fail;
msleep(20);
ret = lg216x_write_reg(state, 0x0002, 0x01);
if (lg_fail(ret))
goto fail;
state->last_reset = jiffies_to_msecs(jiffies);
fail:
return ret;
}
static int lg216x_initialize(struct lg216x_state *state)
{
int ret;
static struct lg216x_reg lg2160_init[] = {
#if 0
{ .reg = 0x0015, .val = 0xe6 },
#else
{ .reg = 0x0015, .val = 0xf7 },
{ .reg = 0x001b, .val = 0x52 },
{ .reg = 0x0208, .val = 0x00 },
{ .reg = 0x0209, .val = 0x82 },
{ .reg = 0x0210, .val = 0xf9 },
{ .reg = 0x020a, .val = 0x00 },
{ .reg = 0x020b, .val = 0x82 },
{ .reg = 0x020d, .val = 0x28 },
{ .reg = 0x020f, .val = 0x14 },
#endif
};
static struct lg216x_reg lg2161_init[] = {
{ .reg = 0x0000, .val = 0x41 },
{ .reg = 0x0001, .val = 0xfb },
{ .reg = 0x0216, .val = 0x00 },
{ .reg = 0x0219, .val = 0x00 },
{ .reg = 0x021b, .val = 0x55 },
{ .reg = 0x0606, .val = 0x0a },
};
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg216x_write_regs(state,
lg2160_init, ARRAY_SIZE(lg2160_init));
break;
case LG2161:
ret = lg216x_write_regs(state,
lg2161_init, ARRAY_SIZE(lg2161_init));
break;
default:
ret = -EINVAL;
break;
}
if (lg_fail(ret))
goto fail;
ret = lg216x_soft_reset(state);
lg_fail(ret);
fail:
return ret;
}
/* ------------------------------------------------------------------------ */
static int lg216x_set_if(struct lg216x_state *state)
{
u8 val;
int ret;
lg_dbg("%d KHz\n", state->cfg->if_khz);
ret = lg216x_read_reg(state, 0x0132, &val);
if (lg_fail(ret))
goto fail;
val &= 0xfb;
val |= (0 == state->cfg->if_khz) ? 0x04 : 0x00;
ret = lg216x_write_reg(state, 0x0132, val);
lg_fail(ret);
/* if NOT zero IF, 6 MHz is the default */
fail:
return ret;
}
/* ------------------------------------------------------------------------ */
static int lg2160_agc_fix(struct lg216x_state *state,
int if_agc_fix, int rf_agc_fix)
{
u8 val;
int ret;
ret = lg216x_read_reg(state, 0x0100, &val);
if (lg_fail(ret))
goto fail;
val &= 0xf3;
val |= (if_agc_fix) ? 0x08 : 0x00;
val |= (rf_agc_fix) ? 0x04 : 0x00;
ret = lg216x_write_reg(state, 0x0100, val);
lg_fail(ret);
fail:
return ret;
}
#if 0
static int lg2160_agc_freeze(struct lg216x_state *state,
int if_agc_freeze, int rf_agc_freeze)
{
u8 val;
int ret;
ret = lg216x_read_reg(state, 0x0100, &val);
if (lg_fail(ret))
goto fail;
val &= 0xcf;
val |= (if_agc_freeze) ? 0x20 : 0x00;
val |= (rf_agc_freeze) ? 0x10 : 0x00;
ret = lg216x_write_reg(state, 0x0100, val);
lg_fail(ret);
fail:
return ret;
}
#endif
static int lg2160_agc_polarity(struct lg216x_state *state,
int if_agc_polarity, int rf_agc_polarity)
{
u8 val;
int ret;
ret = lg216x_read_reg(state, 0x0100, &val);
if (lg_fail(ret))
goto fail;
val &= 0xfc;
val |= (if_agc_polarity) ? 0x02 : 0x00;
val |= (rf_agc_polarity) ? 0x01 : 0x00;
ret = lg216x_write_reg(state, 0x0100, val);
lg_fail(ret);
fail:
return ret;
}
static int lg2160_tuner_pwr_save_polarity(struct lg216x_state *state,
int polarity)
{
u8 val;
int ret;
ret = lg216x_read_reg(state, 0x0008, &val);
if (lg_fail(ret))
goto fail;
val &= 0xfe;
val |= (polarity) ? 0x01 : 0x00;
ret = lg216x_write_reg(state, 0x0008, val);
lg_fail(ret);
fail:
return ret;
}
static int lg2160_spectrum_polarity(struct lg216x_state *state,
int inverted)
{
u8 val;
int ret;
ret = lg216x_read_reg(state, 0x0132, &val);
if (lg_fail(ret))
goto fail;
val &= 0xfd;
val |= (inverted) ? 0x02 : 0x00;
ret = lg216x_write_reg(state, 0x0132, val);
lg_fail(ret);
fail:
return lg216x_soft_reset(state);
}
static int lg2160_tuner_pwr_save(struct lg216x_state *state, int onoff)
{
u8 val;
int ret;
ret = lg216x_read_reg(state, 0x0007, &val);
if (lg_fail(ret))
goto fail;
val &= 0xbf;
val |= (onoff) ? 0x40 : 0x00;
ret = lg216x_write_reg(state, 0x0007, val);
lg_fail(ret);
fail:
return ret;
}
static int lg216x_set_parade(struct lg216x_state *state, int id)
{
int ret;
ret = lg216x_write_reg(state, 0x013e, id & 0x7f);
if (lg_fail(ret))
goto fail;
state->parade_id = id & 0x7f;
fail:
return ret;
}
static int lg216x_set_ensemble(struct lg216x_state *state, int id)
{
int ret;
u16 reg;
u8 val;
switch (state->cfg->lg_chip) {
case LG2160:
reg = 0x0400;
break;
case LG2161:
default:
reg = 0x0500;
break;
}
ret = lg216x_read_reg(state, reg, &val);
if (lg_fail(ret))
goto fail;
val &= 0xfe;
val |= (id) ? 0x01 : 0x00;
ret = lg216x_write_reg(state, reg, val);
lg_fail(ret);
fail:
return ret;
}
static int lg2160_set_spi_clock(struct lg216x_state *state)
{
u8 val;
int ret;
ret = lg216x_read_reg(state, 0x0014, &val);
if (lg_fail(ret))
goto fail;
val &= 0xf3;
val |= (state->cfg->spi_clock << 2);
ret = lg216x_write_reg(state, 0x0014, val);
lg_fail(ret);
fail:
return ret;
}
static int lg2161_set_output_interface(struct lg216x_state *state)
{
u8 val;
int ret;
ret = lg216x_read_reg(state, 0x0014, &val);
if (lg_fail(ret))
goto fail;
val &= ~0x07;
val |= state->cfg->output_if; /* FIXME: needs sanity check */
ret = lg216x_write_reg(state, 0x0014, val);
lg_fail(ret);
fail:
return ret;
}
static int lg216x_enable_fic(struct lg216x_state *state, int onoff)
{
int ret;
ret = lg216x_write_reg(state, 0x0017, 0x23);
if (lg_fail(ret))
goto fail;
ret = lg216x_write_reg(state, 0x0016, 0xfc);
if (lg_fail(ret))
goto fail;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg216x_write_reg(state, 0x0016,
0xfc | ((onoff) ? 0x02 : 0x00));
break;
case LG2161:
ret = lg216x_write_reg(state, 0x0016, (onoff) ? 0x10 : 0x00);
break;
}
if (lg_fail(ret))
goto fail;
ret = lg216x_initialize(state);
if (lg_fail(ret))
goto fail;
if (onoff) {
ret = lg216x_write_reg(state, 0x0017, 0x03);
lg_fail(ret);
}
fail:
return ret;
}
/* ------------------------------------------------------------------------ */
static int lg216x_get_fic_version(struct lg216x_state *state, u8 *ficver)
{
u8 val;
int ret;
*ficver = 0xff; /* invalid value */
ret = lg216x_read_reg(state, 0x0128, &val);
if (lg_fail(ret))
goto fail;
*ficver = (val >> 3) & 0x1f;
fail:
return ret;
}
#if 0
static int lg2160_get_parade_id(struct lg216x_state *state, u8 *id)
{
u8 val;
int ret;
*id = 0xff; /* invalid value */
ret = lg216x_read_reg(state, 0x0123, &val);
if (lg_fail(ret))
goto fail;
*id = val & 0x7f;
fail:
return ret;
}
#endif
static int lg216x_get_nog(struct lg216x_state *state, u8 *nog)
{
u8 val;
int ret;
*nog = 0xff; /* invalid value */
ret = lg216x_read_reg(state, 0x0124, &val);
if (lg_fail(ret))
goto fail;
*nog = ((val >> 4) & 0x07) + 1;
fail:
return ret;
}
static int lg216x_get_tnog(struct lg216x_state *state, u8 *tnog)
{
u8 val;
int ret;
*tnog = 0xff; /* invalid value */
ret = lg216x_read_reg(state, 0x0125, &val);
if (lg_fail(ret))
goto fail;
*tnog = val & 0x1f;
fail:
return ret;
}
static int lg216x_get_sgn(struct lg216x_state *state, u8 *sgn)
{
u8 val;
int ret;
*sgn = 0xff; /* invalid value */
ret = lg216x_read_reg(state, 0x0124, &val);
if (lg_fail(ret))
goto fail;
*sgn = val & 0x0f;
fail:
return ret;
}
static int lg216x_get_prc(struct lg216x_state *state, u8 *prc)
{
u8 val;
int ret;
*prc = 0xff; /* invalid value */
ret = lg216x_read_reg(state, 0x0125, &val);
if (lg_fail(ret))
goto fail;
*prc = ((val >> 5) & 0x07) + 1;
fail:
return ret;
}
/* ------------------------------------------------------------------------ */
static int lg216x_get_rs_frame_mode(struct lg216x_state *state,
enum atscmh_rs_frame_mode *rs_framemode)
{
u8 val;
int ret;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg216x_read_reg(state, 0x0410, &val);
break;
case LG2161:
ret = lg216x_read_reg(state, 0x0513, &val);
break;
default:
ret = -EINVAL;
}
if (lg_fail(ret))
goto fail;
switch ((val >> 4) & 0x03) {
#if 1
default:
#endif
case 0x00:
*rs_framemode = ATSCMH_RSFRAME_PRI_ONLY;
break;
case 0x01:
*rs_framemode = ATSCMH_RSFRAME_PRI_SEC;
break;
#if 0
default:
*rs_framemode = ATSCMH_RSFRAME_RES;
break;
#endif
}
fail:
return ret;
}
static
int lg216x_get_rs_frame_ensemble(struct lg216x_state *state,
enum atscmh_rs_frame_ensemble *rs_frame_ens)
{
u8 val;
int ret;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg216x_read_reg(state, 0x0400, &val);
break;
case LG2161:
ret = lg216x_read_reg(state, 0x0500, &val);
break;
default:
ret = -EINVAL;
}
if (lg_fail(ret))
goto fail;
val &= 0x01;
*rs_frame_ens = (enum atscmh_rs_frame_ensemble) val;
fail:
return ret;
}
static int lg216x_get_rs_code_mode(struct lg216x_state *state,
enum atscmh_rs_code_mode *rs_code_pri,
enum atscmh_rs_code_mode *rs_code_sec)
{
u8 val;
int ret;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg216x_read_reg(state, 0x0410, &val);
break;
case LG2161:
ret = lg216x_read_reg(state, 0x0513, &val);
break;
default:
ret = -EINVAL;
}
if (lg_fail(ret))
goto fail;
*rs_code_pri = (enum atscmh_rs_code_mode) ((val >> 2) & 0x03);
*rs_code_sec = (enum atscmh_rs_code_mode) (val & 0x03);
fail:
return ret;
}
static int lg216x_get_sccc_block_mode(struct lg216x_state *state,
enum atscmh_sccc_block_mode *sccc_block)
{
u8 val;
int ret;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg216x_read_reg(state, 0x0315, &val);
break;
case LG2161:
ret = lg216x_read_reg(state, 0x0511, &val);
break;
default:
ret = -EINVAL;
}
if (lg_fail(ret))
goto fail;
switch (val & 0x03) {
case 0x00:
*sccc_block = ATSCMH_SCCC_BLK_SEP;
break;
case 0x01:
*sccc_block = ATSCMH_SCCC_BLK_COMB;
break;
default:
*sccc_block = ATSCMH_SCCC_BLK_RES;
break;
}
fail:
return ret;
}
static int lg216x_get_sccc_code_mode(struct lg216x_state *state,
enum atscmh_sccc_code_mode *mode_a,
enum atscmh_sccc_code_mode *mode_b,
enum atscmh_sccc_code_mode *mode_c,
enum atscmh_sccc_code_mode *mode_d)
{
u8 val;
int ret;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg216x_read_reg(state, 0x0316, &val);
break;
case LG2161:
ret = lg216x_read_reg(state, 0x0512, &val);
break;
default:
ret = -EINVAL;
}
if (lg_fail(ret))
goto fail;
switch ((val >> 6) & 0x03) {
case 0x00:
*mode_a = ATSCMH_SCCC_CODE_HLF;
break;
case 0x01:
*mode_a = ATSCMH_SCCC_CODE_QTR;
break;
default:
*mode_a = ATSCMH_SCCC_CODE_RES;
break;
}
switch ((val >> 4) & 0x03) {
case 0x00:
*mode_b = ATSCMH_SCCC_CODE_HLF;
break;
case 0x01:
*mode_b = ATSCMH_SCCC_CODE_QTR;
break;
default:
*mode_b = ATSCMH_SCCC_CODE_RES;
break;
}
switch ((val >> 2) & 0x03) {
case 0x00:
*mode_c = ATSCMH_SCCC_CODE_HLF;
break;
case 0x01:
*mode_c = ATSCMH_SCCC_CODE_QTR;
break;
default:
*mode_c = ATSCMH_SCCC_CODE_RES;
break;
}
switch (val & 0x03) {
case 0x00:
*mode_d = ATSCMH_SCCC_CODE_HLF;
break;
case 0x01:
*mode_d = ATSCMH_SCCC_CODE_QTR;
break;
default:
*mode_d = ATSCMH_SCCC_CODE_RES;
break;
}
fail:
return ret;
}
/* ------------------------------------------------------------------------ */
#if 0
static int lg216x_read_fic_err_count(struct lg216x_state *state, u8 *err)
{
u8 fic_err;
int ret;
*err = 0;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg216x_read_reg(state, 0x0012, &fic_err);
break;
case LG2161:
ret = lg216x_read_reg(state, 0x001e, &fic_err);
break;
}
if (lg_fail(ret))
goto fail;
*err = fic_err;
fail:
return ret;
}
static int lg2160_read_crc_err_count(struct lg216x_state *state, u16 *err)
{
u8 crc_err1, crc_err2;
int ret;
*err = 0;
ret = lg216x_read_reg(state, 0x0411, &crc_err1);
if (lg_fail(ret))
goto fail;
ret = lg216x_read_reg(state, 0x0412, &crc_err2);
if (lg_fail(ret))
goto fail;
*err = (u16)(((crc_err2 & 0x0f) << 8) | crc_err1);
fail:
return ret;
}
static int lg2161_read_crc_err_count(struct lg216x_state *state, u16 *err)
{
u8 crc_err;
int ret;
*err = 0;
ret = lg216x_read_reg(state, 0x0612, &crc_err);
if (lg_fail(ret))
goto fail;
*err = (u16)crc_err;
fail:
return ret;
}
static int lg216x_read_crc_err_count(struct lg216x_state *state, u16 *err)
{
int ret;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg2160_read_crc_err_count(state, err);
break;
case LG2161:
ret = lg2161_read_crc_err_count(state, err);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int lg2160_read_rs_err_count(struct lg216x_state *state, u16 *err)
{
u8 rs_err1, rs_err2;
int ret;
*err = 0;
ret = lg216x_read_reg(state, 0x0413, &rs_err1);
if (lg_fail(ret))
goto fail;
ret = lg216x_read_reg(state, 0x0414, &rs_err2);
if (lg_fail(ret))
goto fail;
*err = (u16)(((rs_err2 & 0x0f) << 8) | rs_err1);
fail:
return ret;
}
static int lg2161_read_rs_err_count(struct lg216x_state *state, u16 *err)
{
u8 rs_err1, rs_err2;
int ret;
*err = 0;
ret = lg216x_read_reg(state, 0x0613, &rs_err1);
if (lg_fail(ret))
goto fail;
ret = lg216x_read_reg(state, 0x0614, &rs_err2);
if (lg_fail(ret))
goto fail;
*err = (u16)((rs_err1 << 8) | rs_err2);
fail:
return ret;
}
static int lg216x_read_rs_err_count(struct lg216x_state *state, u16 *err)
{
int ret;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg2160_read_rs_err_count(state, err);
break;
case LG2161:
ret = lg2161_read_rs_err_count(state, err);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
#endif
/* ------------------------------------------------------------------------ */
static int lg216x_get_frontend(struct dvb_frontend *fe,
struct dtv_frontend_properties *c)
{
struct lg216x_state *state = fe->demodulator_priv;
int ret;
lg_dbg("\n");
c->modulation = VSB_8;
c->frequency = state->current_frequency;
c->delivery_system = SYS_ATSCMH;
ret = lg216x_get_fic_version(state,
&c->atscmh_fic_ver);
if (lg_fail(ret))
goto fail;
if (state->fic_ver != c->atscmh_fic_ver) {
state->fic_ver = c->atscmh_fic_ver;
#if 0
ret = lg2160_get_parade_id(state,
&c->atscmh_parade_id);
if (lg_fail(ret))
goto fail;
/* #else */
c->atscmh_parade_id = state->parade_id;
#endif
ret = lg216x_get_nog(state,
&c->atscmh_nog);
if (lg_fail(ret))
goto fail;
ret = lg216x_get_tnog(state,
&c->atscmh_tnog);
if (lg_fail(ret))
goto fail;
ret = lg216x_get_sgn(state,
&c->atscmh_sgn);
if (lg_fail(ret))
goto fail;
ret = lg216x_get_prc(state,
&c->atscmh_prc);
if (lg_fail(ret))
goto fail;
ret = lg216x_get_rs_frame_mode(state,
(enum atscmh_rs_frame_mode *)
&c->atscmh_rs_frame_mode);
if (lg_fail(ret))
goto fail;
ret = lg216x_get_rs_frame_ensemble(state,
(enum atscmh_rs_frame_ensemble *)
&c->atscmh_rs_frame_ensemble);
if (lg_fail(ret))
goto fail;
ret = lg216x_get_rs_code_mode(state,
(enum atscmh_rs_code_mode *)
&c->atscmh_rs_code_mode_pri,
(enum atscmh_rs_code_mode *)
&c->atscmh_rs_code_mode_sec);
if (lg_fail(ret))
goto fail;
ret = lg216x_get_sccc_block_mode(state,
(enum atscmh_sccc_block_mode *)
&c->atscmh_sccc_block_mode);
if (lg_fail(ret))
goto fail;
ret = lg216x_get_sccc_code_mode(state,
(enum atscmh_sccc_code_mode *)
&c->atscmh_sccc_code_mode_a,
(enum atscmh_sccc_code_mode *)
&c->atscmh_sccc_code_mode_b,
(enum atscmh_sccc_code_mode *)
&c->atscmh_sccc_code_mode_c,
(enum atscmh_sccc_code_mode *)
&c->atscmh_sccc_code_mode_d);
if (lg_fail(ret))
goto fail;
}
#if 0
ret = lg216x_read_fic_err_count(state,
(u8 *)&c->atscmh_fic_err);
if (lg_fail(ret))
goto fail;
ret = lg216x_read_crc_err_count(state,
&c->atscmh_crc_err);
if (lg_fail(ret))
goto fail;
ret = lg216x_read_rs_err_count(state,
&c->atscmh_rs_err);
if (lg_fail(ret))
goto fail;
switch (state->cfg->lg_chip) {
case LG2160:
if (((c->atscmh_rs_err >= 240) &&
(c->atscmh_crc_err >= 240)) &&
((jiffies_to_msecs(jiffies) - state->last_reset) > 6000))
ret = lg216x_soft_reset(state);
break;
case LG2161:
/* no fix needed here (as far as we know) */
ret = 0;
break;
}
lg_fail(ret);
#endif
fail:
return ret;
}
static int lg2160_set_frontend(struct dvb_frontend *fe)
{
struct lg216x_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
lg_dbg("(%d)\n", fe->dtv_property_cache.frequency);
if (fe->ops.tuner_ops.set_params) {
ret = fe->ops.tuner_ops.set_params(fe);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
if (lg_fail(ret))
goto fail;
state->current_frequency = fe->dtv_property_cache.frequency;
}
ret = lg2160_agc_fix(state, 0, 0);
if (lg_fail(ret))
goto fail;
ret = lg2160_agc_polarity(state, 0, 0);
if (lg_fail(ret))
goto fail;
ret = lg2160_tuner_pwr_save_polarity(state, 1);
if (lg_fail(ret))
goto fail;
ret = lg216x_set_if(state);
if (lg_fail(ret))
goto fail;
ret = lg2160_spectrum_polarity(state, state->cfg->spectral_inversion);
if (lg_fail(ret))
goto fail;
/* be tuned before this point */
ret = lg216x_soft_reset(state);
if (lg_fail(ret))
goto fail;
ret = lg2160_tuner_pwr_save(state, 0);
if (lg_fail(ret))
goto fail;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg2160_set_spi_clock(state);
if (lg_fail(ret))
goto fail;
break;
case LG2161:
ret = lg2161_set_output_interface(state);
if (lg_fail(ret))
goto fail;
break;
}
ret = lg216x_set_parade(state, fe->dtv_property_cache.atscmh_parade_id);
if (lg_fail(ret))
goto fail;
ret = lg216x_set_ensemble(state,
fe->dtv_property_cache.atscmh_rs_frame_ensemble);
if (lg_fail(ret))
goto fail;
ret = lg216x_initialize(state);
if (lg_fail(ret))
goto fail;
ret = lg216x_enable_fic(state, 1);
lg_fail(ret);
lg216x_get_frontend(fe, c);
fail:
return ret;
}
/* ------------------------------------------------------------------------ */
static int lg2160_read_lock_status(struct lg216x_state *state,
int *acq_lock, int *sync_lock)
{
u8 val;
int ret;
*acq_lock = 0;
*sync_lock = 0;
ret = lg216x_read_reg(state, 0x011b, &val);
if (lg_fail(ret))
goto fail;
*sync_lock = (val & 0x20) ? 0 : 1;
*acq_lock = (val & 0x40) ? 0 : 1;
fail:
return ret;
}
#ifdef USE_LG2161_LOCK_BITS
static int lg2161_read_lock_status(struct lg216x_state *state,
int *acq_lock, int *sync_lock)
{
u8 val;
int ret;
*acq_lock = 0;
*sync_lock = 0;
ret = lg216x_read_reg(state, 0x0304, &val);
if (lg_fail(ret))
goto fail;
*sync_lock = (val & 0x80) ? 0 : 1;
ret = lg216x_read_reg(state, 0x011b, &val);
if (lg_fail(ret))
goto fail;
*acq_lock = (val & 0x40) ? 0 : 1;
fail:
return ret;
}
#endif
static int lg216x_read_lock_status(struct lg216x_state *state,
int *acq_lock, int *sync_lock)
{
#ifdef USE_LG2161_LOCK_BITS
int ret;
switch (state->cfg->lg_chip) {
case LG2160:
ret = lg2160_read_lock_status(state, acq_lock, sync_lock);
break;
case LG2161:
ret = lg2161_read_lock_status(state, acq_lock, sync_lock);
break;
default:
ret = -EINVAL;
break;
}
return ret;
#else
return lg2160_read_lock_status(state, acq_lock, sync_lock);
#endif
}
static int lg216x_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct lg216x_state *state = fe->demodulator_priv;
int ret, acq_lock, sync_lock;
*status = 0;
ret = lg216x_read_lock_status(state, &acq_lock, &sync_lock);
if (lg_fail(ret))
goto fail;
lg_dbg("%s%s\n",
acq_lock ? "SIGNALEXIST " : "",
sync_lock ? "SYNCLOCK" : "");
if (acq_lock)
*status |= FE_HAS_SIGNAL;
if (sync_lock)
*status |= FE_HAS_SYNC;
if (*status)
*status |= FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_LOCK;
fail:
return ret;
}
/* ------------------------------------------------------------------------ */
static int lg2160_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct lg216x_state *state = fe->demodulator_priv;
u8 snr1, snr2;
int ret;
*snr = 0;
ret = lg216x_read_reg(state, 0x0202, &snr1);
if (lg_fail(ret))
goto fail;
ret = lg216x_read_reg(state, 0x0203, &snr2);
if (lg_fail(ret))
goto fail;
if ((snr1 == 0xba) || (snr2 == 0xdf))
*snr = 0;
else
#if 1
*snr = ((snr1 >> 4) * 100) + ((snr1 & 0x0f) * 10) + (snr2 >> 4);
#else /* BCD */
*snr = (snr2 | (snr1 << 8));
#endif
fail:
return ret;
}
static int lg2161_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct lg216x_state *state = fe->demodulator_priv;
u8 snr1, snr2;
int ret;
*snr = 0;
ret = lg216x_read_reg(state, 0x0302, &snr1);
if (lg_fail(ret))
goto fail;
ret = lg216x_read_reg(state, 0x0303, &snr2);
if (lg_fail(ret))
goto fail;
if ((snr1 == 0xba) || (snr2 == 0xfd))
*snr = 0;
else
*snr = ((snr1 >> 4) * 100) + ((snr1 & 0x0f) * 10) + (snr2 & 0x0f);
fail:
return ret;
}
static int lg216x_read_signal_strength(struct dvb_frontend *fe,
u16 *strength)
{
#if 0
/* borrowed from lgdt330x.c
*
* Calculate strength from SNR up to 35dB
* Even though the SNR can go higher than 35dB,
* there is some comfort factor in having a range of
* strong signals that can show at 100%
*/
struct lg216x_state *state = fe->demodulator_priv;
u16 snr;
int ret;
#endif
*strength = 0;
#if 0
ret = fe->ops.read_snr(fe, &snr);
if (lg_fail(ret))
goto fail;
/* Rather than use the 8.8 value snr, use state->snr which is 8.24 */
/* scale the range 0 - 35*2^24 into 0 - 65535 */
if (state->snr >= 8960 * 0x10000)
*strength = 0xffff;
else
*strength = state->snr / 8960;
fail:
return ret;
#else
return 0;
#endif
}
/* ------------------------------------------------------------------------ */
static int lg216x_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
#if 0
struct lg216x_state *state = fe->demodulator_priv;
int ret;
ret = lg216x_read_rs_err_count(state,
&fe->dtv_property_cache.atscmh_rs_err);
if (lg_fail(ret))
goto fail;
*ucblocks = fe->dtv_property_cache.atscmh_rs_err;
fail:
#else
*ucblocks = 0;
#endif
return 0;
}
static int lg216x_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings
*fe_tune_settings)
{
fe_tune_settings->min_delay_ms = 500;
lg_dbg("\n");
return 0;
}
static void lg216x_release(struct dvb_frontend *fe)
{
struct lg216x_state *state = fe->demodulator_priv;
lg_dbg("\n");
kfree(state);
}
static struct dvb_frontend_ops lg2160_ops = {
.delsys = { SYS_ATSCMH },
.info = {
.name = "LG Electronics LG2160 ATSC/MH Frontend",
.frequency_min = 54000000,
.frequency_max = 858000000,
.frequency_stepsize = 62500,
},
.i2c_gate_ctrl = lg216x_i2c_gate_ctrl,
#if 0
.init = lg216x_init,
.sleep = lg216x_sleep,
#endif
.set_frontend = lg2160_set_frontend,
.get_frontend = lg216x_get_frontend,
.get_tune_settings = lg216x_get_tune_settings,
.read_status = lg216x_read_status,
#if 0
.read_ber = lg216x_read_ber,
#endif
.read_signal_strength = lg216x_read_signal_strength,
.read_snr = lg2160_read_snr,
.read_ucblocks = lg216x_read_ucblocks,
.release = lg216x_release,
};
static struct dvb_frontend_ops lg2161_ops = {
.delsys = { SYS_ATSCMH },
.info = {
.name = "LG Electronics LG2161 ATSC/MH Frontend",
.frequency_min = 54000000,
.frequency_max = 858000000,
.frequency_stepsize = 62500,
},
.i2c_gate_ctrl = lg216x_i2c_gate_ctrl,
#if 0
.init = lg216x_init,
.sleep = lg216x_sleep,
#endif
.set_frontend = lg2160_set_frontend,
.get_frontend = lg216x_get_frontend,
.get_tune_settings = lg216x_get_tune_settings,
.read_status = lg216x_read_status,
#if 0
.read_ber = lg216x_read_ber,
#endif
.read_signal_strength = lg216x_read_signal_strength,
.read_snr = lg2161_read_snr,
.read_ucblocks = lg216x_read_ucblocks,
.release = lg216x_release,
};
struct dvb_frontend *lg2160_attach(const struct lg2160_config *config,
struct i2c_adapter *i2c_adap)
{
struct lg216x_state *state = NULL;
lg_dbg("(%d-%04x)\n",
i2c_adap ? i2c_adapter_id(i2c_adap) : 0,
config ? config->i2c_addr : 0);
state = kzalloc(sizeof(struct lg216x_state), GFP_KERNEL);
if (!state)
return NULL;
state->cfg = config;
state->i2c_adap = i2c_adap;
state->fic_ver = 0xff;
state->parade_id = 0xff;
switch (config->lg_chip) {
default:
lg_warn("invalid chip requested, defaulting to LG2160");
/* fall-thru */
case LG2160:
memcpy(&state->frontend.ops, &lg2160_ops,
sizeof(struct dvb_frontend_ops));
break;
case LG2161:
memcpy(&state->frontend.ops, &lg2161_ops,
sizeof(struct dvb_frontend_ops));
break;
}
state->frontend.demodulator_priv = state;
state->current_frequency = -1;
/* parade 1 by default */
state->frontend.dtv_property_cache.atscmh_parade_id = 1;
return &state->frontend;
}
EXPORT_SYMBOL(lg2160_attach);
MODULE_DESCRIPTION("LG Electronics LG216x ATSC/MH Demodulator Driver");
MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
MODULE_LICENSE("GPL");
MODULE_VERSION("0.3");