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OpenCloudOS-Kernel/drivers/media/tuners/mxl5007t.c

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/*
* mxl5007t.c - driver for the MaxLinear MxL5007T silicon tuner
*
* Copyright (C) 2008, 2009 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/i2c.h>
#include <linux/types.h>
#include <linux/videodev2.h>
#include "tuner-i2c.h"
#include "mxl5007t.h"
static DEFINE_MUTEX(mxl5007t_list_mutex);
static LIST_HEAD(hybrid_tuner_instance_list);
static int mxl5007t_debug;
module_param_named(debug, mxl5007t_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debug level");
/* ------------------------------------------------------------------------- */
#define mxl_printk(kern, fmt, arg...) \
printk(kern "%s: " fmt "\n", __func__, ##arg)
#define mxl_err(fmt, arg...) \
mxl_printk(KERN_ERR, "%d: " fmt, __LINE__, ##arg)
#define mxl_warn(fmt, arg...) \
mxl_printk(KERN_WARNING, fmt, ##arg)
#define mxl_info(fmt, arg...) \
mxl_printk(KERN_INFO, fmt, ##arg)
#define mxl_debug(fmt, arg...) \
({ \
if (mxl5007t_debug) \
mxl_printk(KERN_DEBUG, fmt, ##arg); \
})
#define mxl_fail(ret) \
({ \
int __ret; \
__ret = (ret < 0); \
if (__ret) \
mxl_printk(KERN_ERR, "error %d on line %d", \
ret, __LINE__); \
__ret; \
})
/* ------------------------------------------------------------------------- */
#define MHz 1000000
enum mxl5007t_mode {
MxL_MODE_ISDBT = 0,
MxL_MODE_DVBT = 1,
MxL_MODE_ATSC = 2,
MxL_MODE_CABLE = 0x10,
};
enum mxl5007t_chip_version {
MxL_UNKNOWN_ID = 0x00,
MxL_5007_V1_F1 = 0x11,
MxL_5007_V1_F2 = 0x12,
MxL_5007_V4 = 0x14,
MxL_5007_V2_100_F1 = 0x21,
MxL_5007_V2_100_F2 = 0x22,
MxL_5007_V2_200_F1 = 0x23,
MxL_5007_V2_200_F2 = 0x24,
};
struct reg_pair_t {
u8 reg;
u8 val;
};
/* ------------------------------------------------------------------------- */
static struct reg_pair_t init_tab[] = {
{ 0x02, 0x06 },
{ 0x03, 0x48 },
{ 0x05, 0x04 },
{ 0x06, 0x10 },
{ 0x2e, 0x15 }, /* OVERRIDE */
{ 0x30, 0x10 }, /* OVERRIDE */
{ 0x45, 0x58 }, /* OVERRIDE */
{ 0x48, 0x19 }, /* OVERRIDE */
{ 0x52, 0x03 }, /* OVERRIDE */
{ 0x53, 0x44 }, /* OVERRIDE */
{ 0x6a, 0x4b }, /* OVERRIDE */
{ 0x76, 0x00 }, /* OVERRIDE */
{ 0x78, 0x18 }, /* OVERRIDE */
{ 0x7a, 0x17 }, /* OVERRIDE */
{ 0x85, 0x06 }, /* OVERRIDE */
{ 0x01, 0x01 }, /* TOP_MASTER_ENABLE */
{ 0, 0 }
};
static struct reg_pair_t init_tab_cable[] = {
{ 0x02, 0x06 },
{ 0x03, 0x48 },
{ 0x05, 0x04 },
{ 0x06, 0x10 },
{ 0x09, 0x3f },
{ 0x0a, 0x3f },
{ 0x0b, 0x3f },
{ 0x2e, 0x15 }, /* OVERRIDE */
{ 0x30, 0x10 }, /* OVERRIDE */
{ 0x45, 0x58 }, /* OVERRIDE */
{ 0x48, 0x19 }, /* OVERRIDE */
{ 0x52, 0x03 }, /* OVERRIDE */
{ 0x53, 0x44 }, /* OVERRIDE */
{ 0x6a, 0x4b }, /* OVERRIDE */
{ 0x76, 0x00 }, /* OVERRIDE */
{ 0x78, 0x18 }, /* OVERRIDE */
{ 0x7a, 0x17 }, /* OVERRIDE */
{ 0x85, 0x06 }, /* OVERRIDE */
{ 0x01, 0x01 }, /* TOP_MASTER_ENABLE */
{ 0, 0 }
};
/* ------------------------------------------------------------------------- */
static struct reg_pair_t reg_pair_rftune[] = {
{ 0x0f, 0x00 }, /* abort tune */
{ 0x0c, 0x15 },
{ 0x0d, 0x40 },
{ 0x0e, 0x0e },
{ 0x1f, 0x87 }, /* OVERRIDE */
{ 0x20, 0x1f }, /* OVERRIDE */
{ 0x21, 0x87 }, /* OVERRIDE */
{ 0x22, 0x1f }, /* OVERRIDE */
{ 0x80, 0x01 }, /* freq dependent */
{ 0x0f, 0x01 }, /* start tune */
{ 0, 0 }
};
/* ------------------------------------------------------------------------- */
struct mxl5007t_state {
struct list_head hybrid_tuner_instance_list;
struct tuner_i2c_props i2c_props;
struct mutex lock;
struct mxl5007t_config *config;
enum mxl5007t_chip_version chip_id;
struct reg_pair_t tab_init[ARRAY_SIZE(init_tab)];
struct reg_pair_t tab_init_cable[ARRAY_SIZE(init_tab_cable)];
struct reg_pair_t tab_rftune[ARRAY_SIZE(reg_pair_rftune)];
enum mxl5007t_if_freq if_freq;
u32 frequency;
u32 bandwidth;
};
/* ------------------------------------------------------------------------- */
/* called by _init and _rftun to manipulate the register arrays */
static void set_reg_bits(struct reg_pair_t *reg_pair, u8 reg, u8 mask, u8 val)
{
unsigned int i = 0;
while (reg_pair[i].reg || reg_pair[i].val) {
if (reg_pair[i].reg == reg) {
reg_pair[i].val &= ~mask;
reg_pair[i].val |= val;
}
i++;
}
return;
}
static void copy_reg_bits(struct reg_pair_t *reg_pair1,
struct reg_pair_t *reg_pair2)
{
unsigned int i, j;
i = j = 0;
while (reg_pair1[i].reg || reg_pair1[i].val) {
while (reg_pair2[j].reg || reg_pair2[j].val) {
if (reg_pair1[i].reg != reg_pair2[j].reg) {
j++;
continue;
}
reg_pair2[j].val = reg_pair1[i].val;
break;
}
i++;
}
return;
}
/* ------------------------------------------------------------------------- */
static void mxl5007t_set_mode_bits(struct mxl5007t_state *state,
enum mxl5007t_mode mode,
s32 if_diff_out_level)
{
switch (mode) {
case MxL_MODE_ATSC:
set_reg_bits(state->tab_init, 0x06, 0x1f, 0x12);
break;
case MxL_MODE_DVBT:
set_reg_bits(state->tab_init, 0x06, 0x1f, 0x11);
break;
case MxL_MODE_ISDBT:
set_reg_bits(state->tab_init, 0x06, 0x1f, 0x10);
break;
case MxL_MODE_CABLE:
set_reg_bits(state->tab_init_cable, 0x09, 0xff, 0xc1);
set_reg_bits(state->tab_init_cable, 0x0a, 0xff,
8 - if_diff_out_level);
set_reg_bits(state->tab_init_cable, 0x0b, 0xff, 0x17);
break;
default:
mxl_fail(-EINVAL);
}
return;
}
static void mxl5007t_set_if_freq_bits(struct mxl5007t_state *state,
enum mxl5007t_if_freq if_freq,
int invert_if)
{
u8 val;
switch (if_freq) {
case MxL_IF_4_MHZ:
val = 0x00;
break;
case MxL_IF_4_5_MHZ:
val = 0x02;
break;
case MxL_IF_4_57_MHZ:
val = 0x03;
break;
case MxL_IF_5_MHZ:
val = 0x04;
break;
case MxL_IF_5_38_MHZ:
val = 0x05;
break;
case MxL_IF_6_MHZ:
val = 0x06;
break;
case MxL_IF_6_28_MHZ:
val = 0x07;
break;
case MxL_IF_9_1915_MHZ:
val = 0x08;
break;
case MxL_IF_35_25_MHZ:
val = 0x09;
break;
case MxL_IF_36_15_MHZ:
val = 0x0a;
break;
case MxL_IF_44_MHZ:
val = 0x0b;
break;
default:
mxl_fail(-EINVAL);
return;
}
set_reg_bits(state->tab_init, 0x02, 0x0f, val);
/* set inverted IF or normal IF */
set_reg_bits(state->tab_init, 0x02, 0x10, invert_if ? 0x10 : 0x00);
state->if_freq = if_freq;
return;
}
static void mxl5007t_set_xtal_freq_bits(struct mxl5007t_state *state,
enum mxl5007t_xtal_freq xtal_freq)
{
switch (xtal_freq) {
case MxL_XTAL_16_MHZ:
/* select xtal freq & ref freq */
set_reg_bits(state->tab_init, 0x03, 0xf0, 0x00);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x00);
break;
case MxL_XTAL_20_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0x10);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x01);
break;
case MxL_XTAL_20_25_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0x20);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x02);
break;
case MxL_XTAL_20_48_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0x30);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x03);
break;
case MxL_XTAL_24_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0x40);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x04);
break;
case MxL_XTAL_25_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0x50);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x05);
break;
case MxL_XTAL_25_14_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0x60);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x06);
break;
case MxL_XTAL_27_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0x70);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x07);
break;
case MxL_XTAL_28_8_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0x80);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x08);
break;
case MxL_XTAL_32_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0x90);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x09);
break;
case MxL_XTAL_40_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0xa0);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0a);
break;
case MxL_XTAL_44_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0xb0);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0b);
break;
case MxL_XTAL_48_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0xc0);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0c);
break;
case MxL_XTAL_49_3811_MHZ:
set_reg_bits(state->tab_init, 0x03, 0xf0, 0xd0);
set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0d);
break;
default:
mxl_fail(-EINVAL);
return;
}
return;
}
static struct reg_pair_t *mxl5007t_calc_init_regs(struct mxl5007t_state *state,
enum mxl5007t_mode mode)
{
struct mxl5007t_config *cfg = state->config;
memcpy(&state->tab_init, &init_tab, sizeof(init_tab));
memcpy(&state->tab_init_cable, &init_tab_cable, sizeof(init_tab_cable));
mxl5007t_set_mode_bits(state, mode, cfg->if_diff_out_level);
mxl5007t_set_if_freq_bits(state, cfg->if_freq_hz, cfg->invert_if);
mxl5007t_set_xtal_freq_bits(state, cfg->xtal_freq_hz);
set_reg_bits(state->tab_init, 0x03, 0x08, cfg->clk_out_enable << 3);
set_reg_bits(state->tab_init, 0x03, 0x07, cfg->clk_out_amp);
if (mode >= MxL_MODE_CABLE) {
copy_reg_bits(state->tab_init, state->tab_init_cable);
return state->tab_init_cable;
} else
return state->tab_init;
}
/* ------------------------------------------------------------------------- */
enum mxl5007t_bw_mhz {
MxL_BW_6MHz = 6,
MxL_BW_7MHz = 7,
MxL_BW_8MHz = 8,
};
static void mxl5007t_set_bw_bits(struct mxl5007t_state *state,
enum mxl5007t_bw_mhz bw)
{
u8 val;
switch (bw) {
case MxL_BW_6MHz:
val = 0x15; /* set DIG_MODEINDEX, DIG_MODEINDEX_A,
* and DIG_MODEINDEX_CSF */
break;
case MxL_BW_7MHz:
val = 0x2a;
break;
case MxL_BW_8MHz:
val = 0x3f;
break;
default:
mxl_fail(-EINVAL);
return;
}
set_reg_bits(state->tab_rftune, 0x0c, 0x3f, val);
return;
}
static struct
reg_pair_t *mxl5007t_calc_rf_tune_regs(struct mxl5007t_state *state,
u32 rf_freq, enum mxl5007t_bw_mhz bw)
{
u32 dig_rf_freq = 0;
u32 temp;
u32 frac_divider = 1000000;
unsigned int i;
memcpy(&state->tab_rftune, &reg_pair_rftune, sizeof(reg_pair_rftune));
mxl5007t_set_bw_bits(state, bw);
/* Convert RF frequency into 16 bits =>
* 10 bit integer (MHz) + 6 bit fraction */
dig_rf_freq = rf_freq / MHz;
temp = rf_freq % MHz;
for (i = 0; i < 6; i++) {
dig_rf_freq <<= 1;
frac_divider /= 2;
if (temp > frac_divider) {
temp -= frac_divider;
dig_rf_freq++;
}
}
/* add to have shift center point by 7.8124 kHz */
if (temp > 7812)
dig_rf_freq++;
set_reg_bits(state->tab_rftune, 0x0d, 0xff, (u8) dig_rf_freq);
set_reg_bits(state->tab_rftune, 0x0e, 0xff, (u8) (dig_rf_freq >> 8));
if (rf_freq >= 333000000)
set_reg_bits(state->tab_rftune, 0x80, 0x40, 0x40);
return state->tab_rftune;
}
/* ------------------------------------------------------------------------- */
static int mxl5007t_write_reg(struct mxl5007t_state *state, u8 reg, u8 val)
{
u8 buf[] = { reg, val };
struct i2c_msg msg = { .addr = state->i2c_props.addr, .flags = 0,
.buf = buf, .len = 2 };
int ret;
ret = i2c_transfer(state->i2c_props.adap, &msg, 1);
if (ret != 1) {
mxl_err("failed!");
return -EREMOTEIO;
}
return 0;
}
static int mxl5007t_write_regs(struct mxl5007t_state *state,
struct reg_pair_t *reg_pair)
{
unsigned int i = 0;
int ret = 0;
while ((ret == 0) && (reg_pair[i].reg || reg_pair[i].val)) {
ret = mxl5007t_write_reg(state,
reg_pair[i].reg, reg_pair[i].val);
i++;
}
return ret;
}
static int mxl5007t_read_reg(struct mxl5007t_state *state, u8 reg, u8 *val)
{
u8 buf[2] = { 0xfb, reg };
struct i2c_msg msg[] = {
{ .addr = state->i2c_props.addr, .flags = 0,
.buf = buf, .len = 2 },
{ .addr = state->i2c_props.addr, .flags = I2C_M_RD,
.buf = val, .len = 1 },
};
int ret;
ret = i2c_transfer(state->i2c_props.adap, msg, 2);
if (ret != 2) {
mxl_err("failed!");
return -EREMOTEIO;
}
return 0;
}
static int mxl5007t_soft_reset(struct mxl5007t_state *state)
{
u8 d = 0xff;
struct i2c_msg msg = {
.addr = state->i2c_props.addr, .flags = 0,
.buf = &d, .len = 1
};
int ret = i2c_transfer(state->i2c_props.adap, &msg, 1);
if (ret != 1) {
mxl_err("failed!");
return -EREMOTEIO;
}
return 0;
}
static int mxl5007t_tuner_init(struct mxl5007t_state *state,
enum mxl5007t_mode mode)
{
struct reg_pair_t *init_regs;
int ret;
/* calculate initialization reg array */
init_regs = mxl5007t_calc_init_regs(state, mode);
ret = mxl5007t_write_regs(state, init_regs);
if (mxl_fail(ret))
goto fail;
mdelay(1);
fail:
return ret;
}
static int mxl5007t_tuner_rf_tune(struct mxl5007t_state *state, u32 rf_freq_hz,
enum mxl5007t_bw_mhz bw)
{
struct reg_pair_t *rf_tune_regs;
int ret;
/* calculate channel change reg array */
rf_tune_regs = mxl5007t_calc_rf_tune_regs(state, rf_freq_hz, bw);
ret = mxl5007t_write_regs(state, rf_tune_regs);
if (mxl_fail(ret))
goto fail;
msleep(3);
fail:
return ret;
}
/* ------------------------------------------------------------------------- */
static int mxl5007t_synth_lock_status(struct mxl5007t_state *state,
int *rf_locked, int *ref_locked)
{
u8 d;
int ret;
*rf_locked = 0;
*ref_locked = 0;
ret = mxl5007t_read_reg(state, 0xd8, &d);
if (mxl_fail(ret))
goto fail;
if ((d & 0x0c) == 0x0c)
*rf_locked = 1;
if ((d & 0x03) == 0x03)
*ref_locked = 1;
fail:
return ret;
}
/* ------------------------------------------------------------------------- */
static int mxl5007t_get_status(struct dvb_frontend *fe, u32 *status)
{
struct mxl5007t_state *state = fe->tuner_priv;
int rf_locked, ref_locked, ret;
*status = 0;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
ret = mxl5007t_synth_lock_status(state, &rf_locked, &ref_locked);
if (mxl_fail(ret))
goto fail;
mxl_debug("%s%s", rf_locked ? "rf locked " : "",
ref_locked ? "ref locked" : "");
if ((rf_locked) || (ref_locked))
*status |= TUNER_STATUS_LOCKED;
fail:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
return ret;
}
/* ------------------------------------------------------------------------- */
static int mxl5007t_set_params(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
u32 delsys = c->delivery_system;
struct mxl5007t_state *state = fe->tuner_priv;
enum mxl5007t_bw_mhz bw;
enum mxl5007t_mode mode;
int ret;
u32 freq = c->frequency;
switch (delsys) {
case SYS_ATSC:
mode = MxL_MODE_ATSC;
bw = MxL_BW_6MHz;
break;
case SYS_DVBC_ANNEX_B:
mode = MxL_MODE_CABLE;
bw = MxL_BW_6MHz;
break;
case SYS_DVBT:
case SYS_DVBT2:
mode = MxL_MODE_DVBT;
switch (c->bandwidth_hz) {
case 6000000:
bw = MxL_BW_6MHz;
break;
case 7000000:
bw = MxL_BW_7MHz;
break;
case 8000000:
bw = MxL_BW_8MHz;
break;
default:
return -EINVAL;
}
break;
default:
mxl_err("modulation type not supported!");
return -EINVAL;
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
mutex_lock(&state->lock);
ret = mxl5007t_tuner_init(state, mode);
if (mxl_fail(ret))
goto fail;
ret = mxl5007t_tuner_rf_tune(state, freq, bw);
if (mxl_fail(ret))
goto fail;
state->frequency = freq;
state->bandwidth = c->bandwidth_hz;
fail:
mutex_unlock(&state->lock);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
return ret;
}
/* ------------------------------------------------------------------------- */
static int mxl5007t_init(struct dvb_frontend *fe)
{
struct mxl5007t_state *state = fe->tuner_priv;
int ret;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
/* wake from standby */
ret = mxl5007t_write_reg(state, 0x01, 0x01);
mxl_fail(ret);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
return ret;
}
static int mxl5007t_sleep(struct dvb_frontend *fe)
{
struct mxl5007t_state *state = fe->tuner_priv;
int ret;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
/* enter standby mode */
ret = mxl5007t_write_reg(state, 0x01, 0x00);
mxl_fail(ret);
ret = mxl5007t_write_reg(state, 0x0f, 0x00);
mxl_fail(ret);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
return ret;
}
/* ------------------------------------------------------------------------- */
static int mxl5007t_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct mxl5007t_state *state = fe->tuner_priv;
*frequency = state->frequency;
return 0;
}
static int mxl5007t_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
{
struct mxl5007t_state *state = fe->tuner_priv;
*bandwidth = state->bandwidth;
return 0;
}
static int mxl5007t_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct mxl5007t_state *state = fe->tuner_priv;
*frequency = 0;
switch (state->if_freq) {
case MxL_IF_4_MHZ:
*frequency = 4000000;
break;
case MxL_IF_4_5_MHZ:
*frequency = 4500000;
break;
case MxL_IF_4_57_MHZ:
*frequency = 4570000;
break;
case MxL_IF_5_MHZ:
*frequency = 5000000;
break;
case MxL_IF_5_38_MHZ:
*frequency = 5380000;
break;
case MxL_IF_6_MHZ:
*frequency = 6000000;
break;
case MxL_IF_6_28_MHZ:
*frequency = 6280000;
break;
case MxL_IF_9_1915_MHZ:
*frequency = 9191500;
break;
case MxL_IF_35_25_MHZ:
*frequency = 35250000;
break;
case MxL_IF_36_15_MHZ:
*frequency = 36150000;
break;
case MxL_IF_44_MHZ:
*frequency = 44000000;
break;
}
return 0;
}
static int mxl5007t_release(struct dvb_frontend *fe)
{
struct mxl5007t_state *state = fe->tuner_priv;
mutex_lock(&mxl5007t_list_mutex);
if (state)
hybrid_tuner_release_state(state);
mutex_unlock(&mxl5007t_list_mutex);
fe->tuner_priv = NULL;
return 0;
}
/* ------------------------------------------------------------------------- */
static struct dvb_tuner_ops mxl5007t_tuner_ops = {
.info = {
.name = "MaxLinear MxL5007T",
},
.init = mxl5007t_init,
.sleep = mxl5007t_sleep,
.set_params = mxl5007t_set_params,
.get_status = mxl5007t_get_status,
.get_frequency = mxl5007t_get_frequency,
.get_bandwidth = mxl5007t_get_bandwidth,
.release = mxl5007t_release,
.get_if_frequency = mxl5007t_get_if_frequency,
};
static int mxl5007t_get_chip_id(struct mxl5007t_state *state)
{
char *name;
int ret;
u8 id;
ret = mxl5007t_read_reg(state, 0xd9, &id);
if (mxl_fail(ret))
goto fail;
switch (id) {
case MxL_5007_V1_F1:
name = "MxL5007.v1.f1";
break;
case MxL_5007_V1_F2:
name = "MxL5007.v1.f2";
break;
case MxL_5007_V2_100_F1:
name = "MxL5007.v2.100.f1";
break;
case MxL_5007_V2_100_F2:
name = "MxL5007.v2.100.f2";
break;
case MxL_5007_V2_200_F1:
name = "MxL5007.v2.200.f1";
break;
case MxL_5007_V2_200_F2:
name = "MxL5007.v2.200.f2";
break;
case MxL_5007_V4:
name = "MxL5007T.v4";
break;
default:
name = "MxL5007T";
printk(KERN_WARNING "%s: unknown rev (%02x)\n", __func__, id);
id = MxL_UNKNOWN_ID;
}
state->chip_id = id;
mxl_info("%s detected @ %d-%04x", name,
i2c_adapter_id(state->i2c_props.adap),
state->i2c_props.addr);
return 0;
fail:
mxl_warn("unable to identify device @ %d-%04x",
i2c_adapter_id(state->i2c_props.adap),
state->i2c_props.addr);
state->chip_id = MxL_UNKNOWN_ID;
return ret;
}
struct dvb_frontend *mxl5007t_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, u8 addr,
struct mxl5007t_config *cfg)
{
struct mxl5007t_state *state = NULL;
int instance, ret;
mutex_lock(&mxl5007t_list_mutex);
instance = hybrid_tuner_request_state(struct mxl5007t_state, state,
hybrid_tuner_instance_list,
i2c, addr, "mxl5007t");
switch (instance) {
case 0:
goto fail;
case 1:
/* new tuner instance */
state->config = cfg;
mutex_init(&state->lock);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
ret = mxl5007t_get_chip_id(state);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
/* check return value of mxl5007t_get_chip_id */
if (mxl_fail(ret))
goto fail;
break;
default:
/* existing tuner instance */
break;
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
ret = mxl5007t_soft_reset(state);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
if (mxl_fail(ret))
goto fail;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
ret = mxl5007t_write_reg(state, 0x04,
state->config->loop_thru_enable);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
if (mxl_fail(ret))
goto fail;
fe->tuner_priv = state;
mutex_unlock(&mxl5007t_list_mutex);
memcpy(&fe->ops.tuner_ops, &mxl5007t_tuner_ops,
sizeof(struct dvb_tuner_ops));
return fe;
fail:
mutex_unlock(&mxl5007t_list_mutex);
mxl5007t_release(fe);
return NULL;
}
EXPORT_SYMBOL_GPL(mxl5007t_attach);
MODULE_DESCRIPTION("MaxLinear MxL5007T Silicon IC tuner driver");
MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
MODULE_LICENSE("GPL");
MODULE_VERSION("0.2");
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
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