[media] tuners: add FCI FC2580 silicon tuner driver

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari 2012-09-08 22:07:24 -03:00 committed by Mauro Carvalho Chehab
parent aa468cc550
commit d9cb41afbf
5 changed files with 718 additions and 0 deletions

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@ -229,6 +229,13 @@ config MEDIA_TUNER_E4000
help
Elonics E4000 silicon tuner driver.
config MEDIA_TUNER_FC2580
tristate "FCI FC2580 silicon tuner"
depends on MEDIA_SUPPORT && I2C
default m if !MEDIA_SUBDRV_AUTOSELECT
help
FCI FC2580 silicon tuner driver.
config MEDIA_TUNER_TUA9001
tristate "Infineon TUA 9001 silicon tuner"
depends on MEDIA_SUPPORT && I2C

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@ -29,6 +29,7 @@ obj-$(CONFIG_MEDIA_TUNER_MAX2165) += max2165.o
obj-$(CONFIG_MEDIA_TUNER_TDA18218) += tda18218.o
obj-$(CONFIG_MEDIA_TUNER_TDA18212) += tda18212.o
obj-$(CONFIG_MEDIA_TUNER_E4000) += e4000.o
obj-$(CONFIG_MEDIA_TUNER_FC2580) += fc2580.o
obj-$(CONFIG_MEDIA_TUNER_TUA9001) += tua9001.o
obj-$(CONFIG_MEDIA_TUNER_FC0011) += fc0011.o
obj-$(CONFIG_MEDIA_TUNER_FC0012) += fc0012.o

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@ -0,0 +1,524 @@
/*
* FCI FC2580 silicon tuner driver
*
* Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "fc2580_priv.h"
/*
* TODO:
* I2C write and read works only for one single register. Multiple registers
* could not be accessed using normal register address auto-increment.
* There could be (very likely) register to change that behavior....
*
* Due to that limitation functions:
* fc2580_wr_regs()
* fc2580_rd_regs()
* could not be used for accessing more than one register at once.
*
* TODO:
* Currently it blind writes bunch of static registers from the
* fc2580_freq_regs_lut[] when fc2580_set_params() is called. Add some
* logic to reduce unneeded register writes.
* There is also don't-care registers, initialized with value 0xff, and those
* are also written to the chip currently (yes, not wise).
*/
/* write multiple registers */
static int fc2580_wr_regs(struct fc2580_priv *priv, u8 reg, u8 *val, int len)
{
int ret;
u8 buf[1 + len];
struct i2c_msg msg[1] = {
{
.addr = priv->cfg->i2c_addr,
.flags = 0,
.len = sizeof(buf),
.buf = buf,
}
};
buf[0] = reg;
memcpy(&buf[1], val, len);
ret = i2c_transfer(priv->i2c, msg, 1);
if (ret == 1) {
ret = 0;
} else {
dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x " \
"len=%d\n", KBUILD_MODNAME, ret, reg, len);
ret = -EREMOTEIO;
}
return ret;
}
/* read multiple registers */
static int fc2580_rd_regs(struct fc2580_priv *priv, u8 reg, u8 *val, int len)
{
int ret;
u8 buf[len];
struct i2c_msg msg[2] = {
{
.addr = priv->cfg->i2c_addr,
.flags = 0,
.len = 1,
.buf = &reg,
}, {
.addr = priv->cfg->i2c_addr,
.flags = I2C_M_RD,
.len = sizeof(buf),
.buf = buf,
}
};
ret = i2c_transfer(priv->i2c, msg, 2);
if (ret == 2) {
memcpy(val, buf, len);
ret = 0;
} else {
dev_warn(&priv->i2c->dev, "%s: i2c rd failed=%d reg=%02x " \
"len=%d\n", KBUILD_MODNAME, ret, reg, len);
ret = -EREMOTEIO;
}
return ret;
}
/* write single register */
static int fc2580_wr_reg(struct fc2580_priv *priv, u8 reg, u8 val)
{
return fc2580_wr_regs(priv, reg, &val, 1);
}
/* read single register */
static int fc2580_rd_reg(struct fc2580_priv *priv, u8 reg, u8 *val)
{
return fc2580_rd_regs(priv, reg, val, 1);
}
static int fc2580_set_params(struct dvb_frontend *fe)
{
struct fc2580_priv *priv = fe->tuner_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i;
unsigned int r_val, n_val, k_val, k_val_reg, f_ref;
u8 tmp_val, r18_val;
u64 f_vco;
/*
* Fractional-N synthesizer/PLL.
* Most likely all those PLL calculations are not correct. I am not
* sure, but it looks like it is divider based Fractional-N synthesizer.
* There is divider for reference clock too?
* Anyhow, synthesizer calculation results seems to be quite correct.
*/
dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
"bandwidth_hz=%d\n", __func__,
c->delivery_system, c->frequency, c->bandwidth_hz);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
/* PLL */
for (i = 0; i < ARRAY_SIZE(fc2580_pll_lut); i++) {
if (c->frequency <= fc2580_pll_lut[i].freq)
break;
}
if (i == ARRAY_SIZE(fc2580_pll_lut))
goto err;
f_vco = c->frequency;
f_vco *= fc2580_pll_lut[i].div;
if (f_vco >= 2600000000)
tmp_val = 0x0e | fc2580_pll_lut[i].band;
else
tmp_val = 0x06 | fc2580_pll_lut[i].band;
ret = fc2580_wr_reg(priv, 0x02, tmp_val);
if (ret < 0)
goto err;
if (f_vco >= 2UL * 76 * priv->cfg->clock) {
r_val = 1;
r18_val = 0x00;
} else if (f_vco >= 1UL * 76 * priv->cfg->clock) {
r_val = 2;
r18_val = 0x10;
} else {
r_val = 4;
r18_val = 0x20;
}
f_ref = 2UL * priv->cfg->clock / r_val;
n_val = f_vco / f_ref;
k_val = f_vco % f_ref;
k_val_reg = 1UL * k_val * (1 << 20) / f_ref;
ret = fc2580_wr_reg(priv, 0x18, r18_val | ((k_val_reg >> 16) & 0xff));
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x1a, (k_val_reg >> 8) & 0xff);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x1b, (k_val_reg >> 0) & 0xff);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x1c, n_val);
if (ret < 0)
goto err;
if (priv->cfg->clock >= 28000000) {
ret = fc2580_wr_reg(priv, 0x4b, 0x22);
if (ret < 0)
goto err;
}
if (fc2580_pll_lut[i].band == 0x00) {
if (c->frequency <= 794000000)
tmp_val = 0x9f;
else
tmp_val = 0x8f;
ret = fc2580_wr_reg(priv, 0x2d, tmp_val);
if (ret < 0)
goto err;
}
/* registers */
for (i = 0; i < ARRAY_SIZE(fc2580_freq_regs_lut); i++) {
if (c->frequency <= fc2580_freq_regs_lut[i].freq)
break;
}
if (i == ARRAY_SIZE(fc2580_freq_regs_lut))
goto err;
ret = fc2580_wr_reg(priv, 0x25, fc2580_freq_regs_lut[i].r25_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x27, fc2580_freq_regs_lut[i].r27_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x28, fc2580_freq_regs_lut[i].r28_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x29, fc2580_freq_regs_lut[i].r29_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x2b, fc2580_freq_regs_lut[i].r2b_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x2c, fc2580_freq_regs_lut[i].r2c_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x2d, fc2580_freq_regs_lut[i].r2d_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x30, fc2580_freq_regs_lut[i].r30_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x44, fc2580_freq_regs_lut[i].r44_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x50, fc2580_freq_regs_lut[i].r50_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x53, fc2580_freq_regs_lut[i].r53_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x5f, fc2580_freq_regs_lut[i].r5f_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x61, fc2580_freq_regs_lut[i].r61_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x62, fc2580_freq_regs_lut[i].r62_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x63, fc2580_freq_regs_lut[i].r63_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x67, fc2580_freq_regs_lut[i].r67_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x68, fc2580_freq_regs_lut[i].r68_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x69, fc2580_freq_regs_lut[i].r69_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x6a, fc2580_freq_regs_lut[i].r6a_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x6b, fc2580_freq_regs_lut[i].r6b_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x6c, fc2580_freq_regs_lut[i].r6c_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x6d, fc2580_freq_regs_lut[i].r6d_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x6e, fc2580_freq_regs_lut[i].r6e_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x6f, fc2580_freq_regs_lut[i].r6f_val);
if (ret < 0)
goto err;
/* IF filters */
for (i = 0; i < ARRAY_SIZE(fc2580_if_filter_lut); i++) {
if (c->bandwidth_hz <= fc2580_if_filter_lut[i].freq)
break;
}
if (i == ARRAY_SIZE(fc2580_if_filter_lut))
goto err;
ret = fc2580_wr_reg(priv, 0x36, fc2580_if_filter_lut[i].r36_val);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x37, 1UL * priv->cfg->clock * \
fc2580_if_filter_lut[i].mul / 1000000000);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x39, fc2580_if_filter_lut[i].r39_val);
if (ret < 0)
goto err;
/* calibration? */
ret = fc2580_wr_reg(priv, 0x2e, 0x09);
if (ret < 0)
goto err;
for (i = 0; i < 5; i++) {
ret = fc2580_rd_reg(priv, 0x2f, &tmp_val);
if (ret < 0)
goto err;
/* done when [7:6] are set */
if ((tmp_val & 0xc0) == 0xc0)
break;
ret = fc2580_wr_reg(priv, 0x2e, 0x01);
if (ret < 0)
goto err;
ret = fc2580_wr_reg(priv, 0x2e, 0x09);
if (ret < 0)
goto err;
usleep_range(5000, 25000);
}
dev_dbg(&priv->i2c->dev, "%s: loop=%i\n", __func__, i);
ret = fc2580_wr_reg(priv, 0x2e, 0x01);
if (ret < 0)
goto err;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
return 0;
err:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int fc2580_init(struct dvb_frontend *fe)
{
struct fc2580_priv *priv = fe->tuner_priv;
int ret, i;
dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
for (i = 0; i < ARRAY_SIZE(fc2580_init_reg_vals); i++) {
ret = fc2580_wr_reg(priv, fc2580_init_reg_vals[i].reg,
fc2580_init_reg_vals[i].val);
if (ret < 0)
goto err;
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
return 0;
err:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int fc2580_sleep(struct dvb_frontend *fe)
{
struct fc2580_priv *priv = fe->tuner_priv;
int ret;
dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
ret = fc2580_wr_reg(priv, 0x02, 0x0a);
if (ret < 0)
goto err;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
return 0;
err:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int fc2580_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct fc2580_priv *priv = fe->tuner_priv;
dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
*frequency = 0; /* Zero-IF */
return 0;
}
static int fc2580_release(struct dvb_frontend *fe)
{
struct fc2580_priv *priv = fe->tuner_priv;
dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
kfree(fe->tuner_priv);
return 0;
}
static const struct dvb_tuner_ops fc2580_tuner_ops = {
.info = {
.name = "FCI FC2580",
.frequency_min = 174000000,
.frequency_max = 862000000,
},
.release = fc2580_release,
.init = fc2580_init,
.sleep = fc2580_sleep,
.set_params = fc2580_set_params,
.get_if_frequency = fc2580_get_if_frequency,
};
struct dvb_frontend *fc2580_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, const struct fc2580_config *cfg)
{
struct fc2580_priv *priv;
int ret;
u8 chip_id;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
priv = kzalloc(sizeof(struct fc2580_priv), GFP_KERNEL);
if (!priv) {
ret = -ENOMEM;
dev_err(&i2c->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
goto err;
}
priv->cfg = cfg;
priv->i2c = i2c;
fe->tuner_priv = priv;
memcpy(&fe->ops.tuner_ops, &fc2580_tuner_ops,
sizeof(struct dvb_tuner_ops));
/* check if the tuner is there */
ret = fc2580_rd_reg(priv, 0x01, &chip_id);
if (ret < 0)
goto err;
dev_dbg(&priv->i2c->dev, "%s: chip_id=%02x\n", __func__, chip_id);
if (chip_id != 0x56)
goto err;
dev_info(&priv->i2c->dev,
"%s: FCI FC2580 successfully identified\n",
KBUILD_MODNAME);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
return fe;
err:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
kfree(priv);
return NULL;
}
EXPORT_SYMBOL(fc2580_attach);
MODULE_DESCRIPTION("FCI FC2580 silicon tuner driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_LICENSE("GPL");

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@ -0,0 +1,52 @@
/*
* FCI FC2580 silicon tuner driver
*
* Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef FC2580_H
#define FC2580_H
#include "dvb_frontend.h"
struct fc2580_config {
/*
* I2C address
* 0x56, ...
*/
u8 i2c_addr;
/*
* clock
*/
u32 clock;
};
#if defined(CONFIG_MEDIA_TUNER_FC2580) || \
(defined(CONFIG_MEDIA_TUNER_FC2580_MODULE) && defined(MODULE))
extern struct dvb_frontend *fc2580_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, const struct fc2580_config *cfg);
#else
static inline struct dvb_frontend *fc2580_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, const struct fc2580_config *cfg)
{
pr_warn("%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif
#endif

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@ -0,0 +1,134 @@
/*
* FCI FC2580 silicon tuner driver
*
* Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef FC2580_PRIV_H
#define FC2580_PRIV_H
#include "fc2580.h"
struct fc2580_reg_val {
u8 reg;
u8 val;
};
static const struct fc2580_reg_val fc2580_init_reg_vals[] = {
{0x00, 0x00},
{0x12, 0x86},
{0x14, 0x5c},
{0x16, 0x3c},
{0x1f, 0xd2},
{0x09, 0xd7},
{0x0b, 0xd5},
{0x0c, 0x32},
{0x0e, 0x43},
{0x21, 0x0a},
{0x22, 0x82},
{0x45, 0x10},
{0x4c, 0x00},
{0x3f, 0x88},
{0x02, 0x0e},
{0x58, 0x14},
};
struct fc2580_pll {
u32 freq;
u8 div;
u8 band;
};
static const struct fc2580_pll fc2580_pll_lut[] = {
/* VCO min VCO max */
{ 400000000, 12, 0x80}, /* .......... 4800000000 */
{1000000000, 4, 0x00}, /* 1600000000 4000000000 */
{0xffffffff, 2, 0x40}, /* 2000000000 .......... */
};
struct fc2580_if_filter {
u32 freq;
u16 mul;
u8 r36_val;
u8 r39_val;
};
static const struct fc2580_if_filter fc2580_if_filter_lut[] = {
{ 6000000, 4400, 0x18, 0x00},
{ 7000000, 3910, 0x18, 0x80},
{ 8000000, 3300, 0x18, 0x80},
{0xffffffff, 3300, 0x18, 0x80},
};
struct fc2580_freq_regs {
u32 freq;
u8 r25_val;
u8 r27_val;
u8 r28_val;
u8 r29_val;
u8 r2b_val;
u8 r2c_val;
u8 r2d_val;
u8 r30_val;
u8 r44_val;
u8 r50_val;
u8 r53_val;
u8 r5f_val;
u8 r61_val;
u8 r62_val;
u8 r63_val;
u8 r67_val;
u8 r68_val;
u8 r69_val;
u8 r6a_val;
u8 r6b_val;
u8 r6c_val;
u8 r6d_val;
u8 r6e_val;
u8 r6f_val;
};
/* XXX: 0xff is used for don't-care! */
static const struct fc2580_freq_regs fc2580_freq_regs_lut[] = {
{ 400000000,
0xff, 0x77, 0x33, 0x40, 0xff, 0xff, 0xff, 0x09, 0xff, 0x8c,
0x50, 0x0f, 0x07, 0x00, 0x15, 0x03, 0x05, 0x10, 0x12, 0x08,
0x0a, 0x78, 0x32, 0x54},
{ 538000000,
0xf0, 0x77, 0x53, 0x60, 0xff, 0xff, 0xff, 0x09, 0xff, 0x8c,
0x50, 0x13, 0x07, 0x06, 0x15, 0x06, 0x08, 0x10, 0x12, 0x0b,
0x0c, 0x78, 0x32, 0x14},
{ 794000000,
0xf0, 0x77, 0x53, 0x60, 0xff, 0xff, 0xff, 0x09, 0xff, 0x8c,
0x50, 0x15, 0x03, 0x03, 0x15, 0x03, 0x05, 0x0c, 0x0e, 0x0b,
0x0c, 0x78, 0x32, 0x14},
{1000000000,
0xf0, 0x77, 0x53, 0x60, 0xff, 0xff, 0xff, 0x09, 0xff, 0x8c,
0x50, 0x15, 0x07, 0x06, 0x15, 0x07, 0x09, 0x10, 0x12, 0x0b,
0x0c, 0x78, 0x32, 0x14},
{0xffffffff,
0xff, 0xff, 0xff, 0xff, 0x70, 0x37, 0xe7, 0x09, 0x20, 0x8c,
0x50, 0x0f, 0x0f, 0x00, 0x13, 0x00, 0x02, 0x0c, 0x0e, 0x08,
0x0a, 0xa0, 0x50, 0x14},
};
struct fc2580_priv {
const struct fc2580_config *cfg;
struct i2c_adapter *i2c;
};
#endif