linux_dsm_epyc7002/drivers/media/tuners/e4000.c
Antti Palosaari 320c638709 [media] e4000: make VIDEO_V4L2 dependency optional
That tuner driver is mainly for DVB API, but there is some V4L2 API
controls for SDR usage. Make driver compile conditional so that V4L2
is not mandatory. Without the V4L2 support driver is build as a DVB
only, without SDR controls.

Fixes following errors reported by kbuild test robot:
ERROR: "v4l2_ctrl_auto_cluster" [drivers/media/tuners/e4000.ko] undefined!
ERROR: "v4l2_ctrl_new_std" [drivers/media/tuners/e4000.ko] undefined!
ERROR: "v4l2_ctrl_handler_init_class" [drivers/media/tuners/e4000.ko] undefined!
ERROR: "v4l2_ctrl_handler_free" [drivers/media/tuners/e4000.ko] undefined!

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-03-24 17:21:56 -03:00

622 lines
14 KiB
C

/*
* Elonics E4000 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 "e4000_priv.h"
#include <linux/math64.h>
static int e4000_init(struct dvb_frontend *fe)
{
struct e4000 *s = fe->tuner_priv;
int ret;
dev_dbg(&s->client->dev, "%s:\n", __func__);
/* dummy I2C to ensure I2C wakes up */
ret = regmap_write(s->regmap, 0x02, 0x40);
/* reset */
ret = regmap_write(s->regmap, 0x00, 0x01);
if (ret)
goto err;
/* disable output clock */
ret = regmap_write(s->regmap, 0x06, 0x00);
if (ret)
goto err;
ret = regmap_write(s->regmap, 0x7a, 0x96);
if (ret)
goto err;
/* configure gains */
ret = regmap_bulk_write(s->regmap, 0x7e, "\x01\xfe", 2);
if (ret)
goto err;
ret = regmap_write(s->regmap, 0x82, 0x00);
if (ret)
goto err;
ret = regmap_write(s->regmap, 0x24, 0x05);
if (ret)
goto err;
ret = regmap_bulk_write(s->regmap, 0x87, "\x20\x01", 2);
if (ret)
goto err;
ret = regmap_bulk_write(s->regmap, 0x9f, "\x7f\x07", 2);
if (ret)
goto err;
/* DC offset control */
ret = regmap_write(s->regmap, 0x2d, 0x1f);
if (ret)
goto err;
ret = regmap_bulk_write(s->regmap, 0x70, "\x01\x01", 2);
if (ret)
goto err;
/* gain control */
ret = regmap_write(s->regmap, 0x1a, 0x17);
if (ret)
goto err;
ret = regmap_write(s->regmap, 0x1f, 0x1a);
if (ret)
goto err;
s->active = true;
err:
if (ret)
dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int e4000_sleep(struct dvb_frontend *fe)
{
struct e4000 *s = fe->tuner_priv;
int ret;
dev_dbg(&s->client->dev, "%s:\n", __func__);
s->active = false;
ret = regmap_write(s->regmap, 0x00, 0x00);
if (ret)
goto err;
err:
if (ret)
dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int e4000_set_params(struct dvb_frontend *fe)
{
struct e4000 *s = fe->tuner_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i, sigma_delta;
unsigned int pll_n, pll_f;
u64 f_vco;
u8 buf[5], i_data[4], q_data[4];
dev_dbg(&s->client->dev,
"%s: delivery_system=%d frequency=%u bandwidth_hz=%u\n",
__func__, c->delivery_system, c->frequency,
c->bandwidth_hz);
/* gain control manual */
ret = regmap_write(s->regmap, 0x1a, 0x00);
if (ret)
goto err;
/* PLL */
for (i = 0; i < ARRAY_SIZE(e4000_pll_lut); i++) {
if (c->frequency <= e4000_pll_lut[i].freq)
break;
}
if (i == ARRAY_SIZE(e4000_pll_lut)) {
ret = -EINVAL;
goto err;
}
f_vco = 1ull * c->frequency * e4000_pll_lut[i].mul;
pll_n = div_u64_rem(f_vco, s->clock, &pll_f);
sigma_delta = div_u64(0x10000ULL * pll_f, s->clock);
buf[0] = pll_n;
buf[1] = (sigma_delta >> 0) & 0xff;
buf[2] = (sigma_delta >> 8) & 0xff;
buf[3] = 0x00;
buf[4] = e4000_pll_lut[i].div;
dev_dbg(&s->client->dev,
"%s: f_vco=%llu pll div=%d sigma_delta=%04x\n",
__func__, f_vco, buf[0], sigma_delta);
ret = regmap_bulk_write(s->regmap, 0x09, buf, 5);
if (ret)
goto err;
/* LNA filter (RF filter) */
for (i = 0; i < ARRAY_SIZE(e400_lna_filter_lut); i++) {
if (c->frequency <= e400_lna_filter_lut[i].freq)
break;
}
if (i == ARRAY_SIZE(e400_lna_filter_lut)) {
ret = -EINVAL;
goto err;
}
ret = regmap_write(s->regmap, 0x10, e400_lna_filter_lut[i].val);
if (ret)
goto err;
/* IF filters */
for (i = 0; i < ARRAY_SIZE(e4000_if_filter_lut); i++) {
if (c->bandwidth_hz <= e4000_if_filter_lut[i].freq)
break;
}
if (i == ARRAY_SIZE(e4000_if_filter_lut)) {
ret = -EINVAL;
goto err;
}
buf[0] = e4000_if_filter_lut[i].reg11_val;
buf[1] = e4000_if_filter_lut[i].reg12_val;
ret = regmap_bulk_write(s->regmap, 0x11, buf, 2);
if (ret)
goto err;
/* frequency band */
for (i = 0; i < ARRAY_SIZE(e4000_band_lut); i++) {
if (c->frequency <= e4000_band_lut[i].freq)
break;
}
if (i == ARRAY_SIZE(e4000_band_lut)) {
ret = -EINVAL;
goto err;
}
ret = regmap_write(s->regmap, 0x07, e4000_band_lut[i].reg07_val);
if (ret)
goto err;
ret = regmap_write(s->regmap, 0x78, e4000_band_lut[i].reg78_val);
if (ret)
goto err;
/* DC offset */
for (i = 0; i < 4; i++) {
if (i == 0)
ret = regmap_bulk_write(s->regmap, 0x15, "\x00\x7e\x24", 3);
else if (i == 1)
ret = regmap_bulk_write(s->regmap, 0x15, "\x00\x7f", 2);
else if (i == 2)
ret = regmap_bulk_write(s->regmap, 0x15, "\x01", 1);
else
ret = regmap_bulk_write(s->regmap, 0x16, "\x7e", 1);
if (ret)
goto err;
ret = regmap_write(s->regmap, 0x29, 0x01);
if (ret)
goto err;
ret = regmap_bulk_read(s->regmap, 0x2a, buf, 3);
if (ret)
goto err;
i_data[i] = (((buf[2] >> 0) & 0x3) << 6) | (buf[0] & 0x3f);
q_data[i] = (((buf[2] >> 4) & 0x3) << 6) | (buf[1] & 0x3f);
}
swap(q_data[2], q_data[3]);
swap(i_data[2], i_data[3]);
ret = regmap_bulk_write(s->regmap, 0x50, q_data, 4);
if (ret)
goto err;
ret = regmap_bulk_write(s->regmap, 0x60, i_data, 4);
if (ret)
goto err;
/* gain control auto */
ret = regmap_write(s->regmap, 0x1a, 0x17);
if (ret)
goto err;
err:
if (ret)
dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int e4000_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct e4000 *s = fe->tuner_priv;
dev_dbg(&s->client->dev, "%s:\n", __func__);
*frequency = 0; /* Zero-IF */
return 0;
}
#if IS_ENABLED(CONFIG_VIDEO_V4L2)
static int e4000_set_lna_gain(struct dvb_frontend *fe)
{
struct e4000 *s = fe->tuner_priv;
int ret;
u8 u8tmp;
dev_dbg(&s->client->dev, "%s: lna auto=%d->%d val=%d->%d\n",
__func__, s->lna_gain_auto->cur.val,
s->lna_gain_auto->val, s->lna_gain->cur.val,
s->lna_gain->val);
if (s->lna_gain_auto->val && s->if_gain_auto->cur.val)
u8tmp = 0x17;
else if (s->lna_gain_auto->val)
u8tmp = 0x19;
else if (s->if_gain_auto->cur.val)
u8tmp = 0x16;
else
u8tmp = 0x10;
ret = regmap_write(s->regmap, 0x1a, u8tmp);
if (ret)
goto err;
if (s->lna_gain_auto->val == false) {
ret = regmap_write(s->regmap, 0x14, s->lna_gain->val);
if (ret)
goto err;
}
err:
if (ret)
dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int e4000_set_mixer_gain(struct dvb_frontend *fe)
{
struct e4000 *s = fe->tuner_priv;
int ret;
u8 u8tmp;
dev_dbg(&s->client->dev, "%s: mixer auto=%d->%d val=%d->%d\n",
__func__, s->mixer_gain_auto->cur.val,
s->mixer_gain_auto->val, s->mixer_gain->cur.val,
s->mixer_gain->val);
if (s->mixer_gain_auto->val)
u8tmp = 0x15;
else
u8tmp = 0x14;
ret = regmap_write(s->regmap, 0x20, u8tmp);
if (ret)
goto err;
if (s->mixer_gain_auto->val == false) {
ret = regmap_write(s->regmap, 0x15, s->mixer_gain->val);
if (ret)
goto err;
}
err:
if (ret)
dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int e4000_set_if_gain(struct dvb_frontend *fe)
{
struct e4000 *s = fe->tuner_priv;
int ret;
u8 buf[2];
u8 u8tmp;
dev_dbg(&s->client->dev, "%s: if auto=%d->%d val=%d->%d\n",
__func__, s->if_gain_auto->cur.val,
s->if_gain_auto->val, s->if_gain->cur.val,
s->if_gain->val);
if (s->if_gain_auto->val && s->lna_gain_auto->cur.val)
u8tmp = 0x17;
else if (s->lna_gain_auto->cur.val)
u8tmp = 0x19;
else if (s->if_gain_auto->val)
u8tmp = 0x16;
else
u8tmp = 0x10;
ret = regmap_write(s->regmap, 0x1a, u8tmp);
if (ret)
goto err;
if (s->if_gain_auto->val == false) {
buf[0] = e4000_if_gain_lut[s->if_gain->val].reg16_val;
buf[1] = e4000_if_gain_lut[s->if_gain->val].reg17_val;
ret = regmap_bulk_write(s->regmap, 0x16, buf, 2);
if (ret)
goto err;
}
err:
if (ret)
dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int e4000_pll_lock(struct dvb_frontend *fe)
{
struct e4000 *s = fe->tuner_priv;
int ret;
unsigned int utmp;
ret = regmap_read(s->regmap, 0x07, &utmp);
if (ret)
goto err;
s->pll_lock->val = (utmp & 0x01);
err:
if (ret)
dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
static int e4000_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct e4000 *s = container_of(ctrl->handler, struct e4000, hdl);
int ret;
if (s->active == false)
return 0;
switch (ctrl->id) {
case V4L2_CID_RF_TUNER_PLL_LOCK:
ret = e4000_pll_lock(s->fe);
break;
default:
dev_dbg(&s->client->dev, "%s: unknown ctrl: id=%d name=%s\n",
__func__, ctrl->id, ctrl->name);
ret = -EINVAL;
}
return ret;
}
static int e4000_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct e4000 *s = container_of(ctrl->handler, struct e4000, hdl);
struct dvb_frontend *fe = s->fe;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
if (s->active == false)
return 0;
switch (ctrl->id) {
case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
case V4L2_CID_RF_TUNER_BANDWIDTH:
c->bandwidth_hz = s->bandwidth->val;
ret = e4000_set_params(s->fe);
break;
case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
case V4L2_CID_RF_TUNER_LNA_GAIN:
ret = e4000_set_lna_gain(s->fe);
break;
case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:
case V4L2_CID_RF_TUNER_MIXER_GAIN:
ret = e4000_set_mixer_gain(s->fe);
break;
case V4L2_CID_RF_TUNER_IF_GAIN_AUTO:
case V4L2_CID_RF_TUNER_IF_GAIN:
ret = e4000_set_if_gain(s->fe);
break;
default:
dev_dbg(&s->client->dev, "%s: unknown ctrl: id=%d name=%s\n",
__func__, ctrl->id, ctrl->name);
ret = -EINVAL;
}
return ret;
}
static const struct v4l2_ctrl_ops e4000_ctrl_ops = {
.g_volatile_ctrl = e4000_g_volatile_ctrl,
.s_ctrl = e4000_s_ctrl,
};
#endif
static const struct dvb_tuner_ops e4000_tuner_ops = {
.info = {
.name = "Elonics E4000",
.frequency_min = 174000000,
.frequency_max = 862000000,
},
.init = e4000_init,
.sleep = e4000_sleep,
.set_params = e4000_set_params,
.get_if_frequency = e4000_get_if_frequency,
};
/*
* Use V4L2 subdev to carry V4L2 control handler, even we don't implement
* subdev itself, just to avoid reinventing the wheel.
*/
static int e4000_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct e4000_config *cfg = client->dev.platform_data;
struct dvb_frontend *fe = cfg->fe;
struct e4000 *s;
int ret;
unsigned int utmp;
static const struct regmap_config regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0xff,
};
s = kzalloc(sizeof(struct e4000), GFP_KERNEL);
if (!s) {
ret = -ENOMEM;
dev_err(&client->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
goto err;
}
s->clock = cfg->clock;
s->client = client;
s->fe = cfg->fe;
s->regmap = devm_regmap_init_i2c(client, &regmap_config);
if (IS_ERR(s->regmap)) {
ret = PTR_ERR(s->regmap);
goto err;
}
/* check if the tuner is there */
ret = regmap_read(s->regmap, 0x02, &utmp);
if (ret)
goto err;
dev_dbg(&s->client->dev, "%s: chip id=%02x\n", __func__, utmp);
if (utmp != 0x40) {
ret = -ENODEV;
goto err;
}
/* put sleep as chip seems to be in normal mode by default */
ret = regmap_write(s->regmap, 0x00, 0x00);
if (ret)
goto err;
#if IS_ENABLED(CONFIG_VIDEO_V4L2)
/* Register controls */
v4l2_ctrl_handler_init(&s->hdl, 9);
s->bandwidth_auto = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1);
s->bandwidth = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_BANDWIDTH, 4300000, 11000000, 100000, 4300000);
v4l2_ctrl_auto_cluster(2, &s->bandwidth_auto, 0, false);
s->lna_gain_auto = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 1);
s->lna_gain = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_LNA_GAIN, 0, 15, 1, 10);
v4l2_ctrl_auto_cluster(2, &s->lna_gain_auto, 0, false);
s->mixer_gain_auto = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 1);
s->mixer_gain = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1);
v4l2_ctrl_auto_cluster(2, &s->mixer_gain_auto, 0, false);
s->if_gain_auto = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_IF_GAIN_AUTO, 0, 1, 1, 1);
s->if_gain = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_IF_GAIN, 0, 54, 1, 0);
v4l2_ctrl_auto_cluster(2, &s->if_gain_auto, 0, false);
s->pll_lock = v4l2_ctrl_new_std(&s->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_PLL_LOCK, 0, 1, 1, 0);
if (s->hdl.error) {
ret = s->hdl.error;
dev_err(&s->client->dev, "Could not initialize controls\n");
v4l2_ctrl_handler_free(&s->hdl);
goto err;
}
s->sd.ctrl_handler = &s->hdl;
#endif
dev_info(&s->client->dev,
"%s: Elonics E4000 successfully identified\n",
KBUILD_MODNAME);
fe->tuner_priv = s;
memcpy(&fe->ops.tuner_ops, &e4000_tuner_ops,
sizeof(struct dvb_tuner_ops));
v4l2_set_subdevdata(&s->sd, client);
i2c_set_clientdata(client, &s->sd);
return 0;
err:
if (ret) {
dev_dbg(&client->dev, "%s: failed=%d\n", __func__, ret);
kfree(s);
}
return ret;
}
static int e4000_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct e4000 *s = container_of(sd, struct e4000, sd);
struct dvb_frontend *fe = s->fe;
dev_dbg(&client->dev, "%s:\n", __func__);
#if IS_ENABLED(CONFIG_VIDEO_V4L2)
v4l2_ctrl_handler_free(&s->hdl);
#endif
memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
fe->tuner_priv = NULL;
kfree(s);
return 0;
}
static const struct i2c_device_id e4000_id[] = {
{"e4000", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, e4000_id);
static struct i2c_driver e4000_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "e4000",
},
.probe = e4000_probe,
.remove = e4000_remove,
.id_table = e4000_id,
};
module_i2c_driver(e4000_driver);
MODULE_DESCRIPTION("Elonics E4000 silicon tuner driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_LICENSE("GPL");