renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-22 20:23:57 +08:00
Code
48059784eb
linux-next/drivers/media/tuners/e4000.c
Thomas Gleixner 1621633323 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 
Based on 2 normalized pattern(s):

  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

  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 [no]_[pad]_[ctrl] 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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 176 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154040.652910950@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:39 +02:00

745 lines
17 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Elonics E4000 silicon tuner driver
*
* Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
*/
#include "e4000_priv.h"
static int e4000_init(struct e4000_dev *dev)
{
struct i2c_client *client = dev->client;
int ret;
dev_dbg(&client->dev, "\n");
/* reset */
ret = regmap_write(dev->regmap, 0x00, 0x01);
if (ret)
goto err;
/* disable output clock */
ret = regmap_write(dev->regmap, 0x06, 0x00);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0x7a, 0x96);
if (ret)
goto err;
/* configure gains */
ret = regmap_bulk_write(dev->regmap, 0x7e, "\x01\xfe", 2);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0x82, 0x00);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0x24, 0x05);
if (ret)
goto err;
ret = regmap_bulk_write(dev->regmap, 0x87, "\x20\x01", 2);
if (ret)
goto err;
ret = regmap_bulk_write(dev->regmap, 0x9f, "\x7f\x07", 2);
if (ret)
goto err;
/* DC offset control */
ret = regmap_write(dev->regmap, 0x2d, 0x1f);
if (ret)
goto err;
ret = regmap_bulk_write(dev->regmap, 0x70, "\x01\x01", 2);
if (ret)
goto err;
/* gain control */
ret = regmap_write(dev->regmap, 0x1a, 0x17);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0x1f, 0x1a);
if (ret)
goto err;
dev->active = true;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int e4000_sleep(struct e4000_dev *dev)
{
struct i2c_client *client = dev->client;
int ret;
dev_dbg(&client->dev, "\n");
dev->active = false;
ret = regmap_write(dev->regmap, 0x00, 0x00);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int e4000_set_params(struct e4000_dev *dev)
{
struct i2c_client *client = dev->client;
int ret, i;
unsigned int div_n, k, k_cw, div_out;
u64 f_vco;
u8 buf[5], i_data[4], q_data[4];
if (!dev->active) {
dev_dbg(&client->dev, "tuner is sleeping\n");
return 0;
}
/* gain control manual */
ret = regmap_write(dev->regmap, 0x1a, 0x00);
if (ret)
goto err;
/*
* Fractional-N synthesizer
*
* +----------------------------+
* v |
* Fref +----+ +-------+ +------+ +---+
* ------> | PD | --> | VCO | ------> | /N.F | <-- | K |
* +----+ +-------+ +------+ +---+
* |
* |
* v
* +-------+ Fout
* | /Rout | ------>
* +-------+
*/
for (i = 0; i < ARRAY_SIZE(e4000_pll_lut); i++) {
if (dev->f_frequency <= e4000_pll_lut[i].freq)
break;
}
if (i == ARRAY_SIZE(e4000_pll_lut)) {
ret = -EINVAL;
goto err;
}
#define F_REF dev->clk
div_out = e4000_pll_lut[i].div_out;
f_vco = (u64) dev->f_frequency * div_out;
/* calculate PLL integer and fractional control word */
div_n = div_u64_rem(f_vco, F_REF, &k);
k_cw = div_u64((u64) k * 0x10000, F_REF);
dev_dbg(&client->dev,
"frequency=%u bandwidth=%u f_vco=%llu F_REF=%u div_n=%u k=%u k_cw=%04x div_out=%u\n",
dev->f_frequency, dev->f_bandwidth, f_vco, F_REF, div_n, k,
k_cw, div_out);
buf[0] = div_n;
buf[1] = (k_cw >> 0) & 0xff;
buf[2] = (k_cw >> 8) & 0xff;
buf[3] = 0x00;
buf[4] = e4000_pll_lut[i].div_out_reg;
ret = regmap_bulk_write(dev->regmap, 0x09, buf, 5);
if (ret)
goto err;
/* LNA filter (RF filter) */
for (i = 0; i < ARRAY_SIZE(e400_lna_filter_lut); i++) {
if (dev->f_frequency <= e400_lna_filter_lut[i].freq)
break;
}
if (i == ARRAY_SIZE(e400_lna_filter_lut)) {
ret = -EINVAL;
goto err;
}
ret = regmap_write(dev->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 (dev->f_bandwidth <= 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(dev->regmap, 0x11, buf, 2);
if (ret)
goto err;
/* frequency band */
for (i = 0; i < ARRAY_SIZE(e4000_band_lut); i++) {
if (dev->f_frequency <= e4000_band_lut[i].freq)
break;
}
if (i == ARRAY_SIZE(e4000_band_lut)) {
ret = -EINVAL;
goto err;
}
ret = regmap_write(dev->regmap, 0x07, e4000_band_lut[i].reg07_val);
if (ret)
goto err;
ret = regmap_write(dev->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(dev->regmap, 0x15, "\x00\x7e\x24", 3);
else if (i == 1)
ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7f", 2);
else if (i == 2)
ret = regmap_bulk_write(dev->regmap, 0x15, "\x01", 1);
else
ret = regmap_bulk_write(dev->regmap, 0x16, "\x7e", 1);
if (ret)
goto err;
ret = regmap_write(dev->regmap, 0x29, 0x01);
if (ret)
goto err;
ret = regmap_bulk_read(dev->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(dev->regmap, 0x50, q_data, 4);
if (ret)
goto err;
ret = regmap_bulk_write(dev->regmap, 0x60, i_data, 4);
if (ret)
goto err;
/* gain control auto */
ret = regmap_write(dev->regmap, 0x1a, 0x17);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
/*
* V4L2 API
*/
#if IS_ENABLED(CONFIG_VIDEO_V4L2)
static const struct v4l2_frequency_band bands[] = {
{
.type = V4L2_TUNER_RF,
.index = 0,
.capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
.rangelow = 59000000,
.rangehigh = 1105000000,
},
{
.type = V4L2_TUNER_RF,
.index = 1,
.capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
.rangelow = 1249000000,
.rangehigh = 2208000000UL,
},
};
static inline struct e4000_dev *e4000_subdev_to_dev(struct v4l2_subdev *sd)
{
return container_of(sd, struct e4000_dev, sd);
}
static int e4000_standby(struct v4l2_subdev *sd)
{
struct e4000_dev *dev = e4000_subdev_to_dev(sd);
int ret;
ret = e4000_sleep(dev);
if (ret)
return ret;
return e4000_set_params(dev);
}
static int e4000_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
{
struct e4000_dev *dev = e4000_subdev_to_dev(sd);
struct i2c_client *client = dev->client;
dev_dbg(&client->dev, "index=%d\n", v->index);
strscpy(v->name, "Elonics E4000", sizeof(v->name));
v->type = V4L2_TUNER_RF;
v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
v->rangelow = bands[0].rangelow;
v->rangehigh = bands[1].rangehigh;
return 0;
}
static int e4000_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v)
{
struct e4000_dev *dev = e4000_subdev_to_dev(sd);
struct i2c_client *client = dev->client;
dev_dbg(&client->dev, "index=%d\n", v->index);
return 0;
}
static int e4000_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
{
struct e4000_dev *dev = e4000_subdev_to_dev(sd);
struct i2c_client *client = dev->client;
dev_dbg(&client->dev, "tuner=%d\n", f->tuner);
f->frequency = dev->f_frequency;
return 0;
}
static int e4000_s_frequency(struct v4l2_subdev *sd,
const struct v4l2_frequency *f)
{
struct e4000_dev *dev = e4000_subdev_to_dev(sd);
struct i2c_client *client = dev->client;
dev_dbg(&client->dev, "tuner=%d type=%d frequency=%u\n",
f->tuner, f->type, f->frequency);
dev->f_frequency = clamp_t(unsigned int, f->frequency,
bands[0].rangelow, bands[1].rangehigh);
return e4000_set_params(dev);
}
static int e4000_enum_freq_bands(struct v4l2_subdev *sd,
struct v4l2_frequency_band *band)
{
struct e4000_dev *dev = e4000_subdev_to_dev(sd);
struct i2c_client *client = dev->client;
dev_dbg(&client->dev, "tuner=%d type=%d index=%d\n",
band->tuner, band->type, band->index);
if (band->index >= ARRAY_SIZE(bands))
return -EINVAL;
band->capability = bands[band->index].capability;
band->rangelow = bands[band->index].rangelow;
band->rangehigh = bands[band->index].rangehigh;
return 0;
}
static const struct v4l2_subdev_tuner_ops e4000_subdev_tuner_ops = {
.standby = e4000_standby,
.g_tuner = e4000_g_tuner,
.s_tuner = e4000_s_tuner,
.g_frequency = e4000_g_frequency,
.s_frequency = e4000_s_frequency,
.enum_freq_bands = e4000_enum_freq_bands,
};
static const struct v4l2_subdev_ops e4000_subdev_ops = {
.tuner = &e4000_subdev_tuner_ops,
};
static int e4000_set_lna_gain(struct dvb_frontend *fe)
{
struct e4000_dev *dev = fe->tuner_priv;
struct i2c_client *client = dev->client;
int ret;
u8 u8tmp;
dev_dbg(&client->dev, "lna auto=%d->%d val=%d->%d\n",
dev->lna_gain_auto->cur.val, dev->lna_gain_auto->val,
dev->lna_gain->cur.val, dev->lna_gain->val);
if (dev->lna_gain_auto->val && dev->if_gain_auto->cur.val)
u8tmp = 0x17;
else if (dev->lna_gain_auto->val)
u8tmp = 0x19;
else if (dev->if_gain_auto->cur.val)
u8tmp = 0x16;
else
u8tmp = 0x10;
ret = regmap_write(dev->regmap, 0x1a, u8tmp);
if (ret)
goto err;
if (dev->lna_gain_auto->val == false) {
ret = regmap_write(dev->regmap, 0x14, dev->lna_gain->val);
if (ret)
goto err;
}
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int e4000_set_mixer_gain(struct dvb_frontend *fe)
{
struct e4000_dev *dev = fe->tuner_priv;
struct i2c_client *client = dev->client;
int ret;
u8 u8tmp;
dev_dbg(&client->dev, "mixer auto=%d->%d val=%d->%d\n",
dev->mixer_gain_auto->cur.val, dev->mixer_gain_auto->val,
dev->mixer_gain->cur.val, dev->mixer_gain->val);
if (dev->mixer_gain_auto->val)
u8tmp = 0x15;
else
u8tmp = 0x14;
ret = regmap_write(dev->regmap, 0x20, u8tmp);
if (ret)
goto err;
if (dev->mixer_gain_auto->val == false) {
ret = regmap_write(dev->regmap, 0x15, dev->mixer_gain->val);
if (ret)
goto err;
}
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int e4000_set_if_gain(struct dvb_frontend *fe)
{
struct e4000_dev *dev = fe->tuner_priv;
struct i2c_client *client = dev->client;
int ret;
u8 buf[2];
u8 u8tmp;
dev_dbg(&client->dev, "if auto=%d->%d val=%d->%d\n",
dev->if_gain_auto->cur.val, dev->if_gain_auto->val,
dev->if_gain->cur.val, dev->if_gain->val);
if (dev->if_gain_auto->val && dev->lna_gain_auto->cur.val)
u8tmp = 0x17;
else if (dev->lna_gain_auto->cur.val)
u8tmp = 0x19;
else if (dev->if_gain_auto->val)
u8tmp = 0x16;
else
u8tmp = 0x10;
ret = regmap_write(dev->regmap, 0x1a, u8tmp);
if (ret)
goto err;
if (dev->if_gain_auto->val == false) {
buf[0] = e4000_if_gain_lut[dev->if_gain->val].reg16_val;
buf[1] = e4000_if_gain_lut[dev->if_gain->val].reg17_val;
ret = regmap_bulk_write(dev->regmap, 0x16, buf, 2);
if (ret)
goto err;
}
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int e4000_pll_lock(struct dvb_frontend *fe)
{
struct e4000_dev *dev = fe->tuner_priv;
struct i2c_client *client = dev->client;
int ret;
unsigned int uitmp;
ret = regmap_read(dev->regmap, 0x07, &uitmp);
if (ret)
goto err;
dev->pll_lock->val = (uitmp & 0x01);
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int e4000_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl);
struct i2c_client *client = dev->client;
int ret;
if (!dev->active)
return 0;
switch (ctrl->id) {
case V4L2_CID_RF_TUNER_PLL_LOCK:
ret = e4000_pll_lock(dev->fe);
break;
default:
dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n",
ctrl->id, ctrl->name);
ret = -EINVAL;
}
return ret;
}
static int e4000_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl);
struct i2c_client *client = dev->client;
int ret;
if (!dev->active)
return 0;
switch (ctrl->id) {
case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
case V4L2_CID_RF_TUNER_BANDWIDTH:
/*
* TODO: Auto logic does not work 100% correctly as tuner driver
* do not have information to calculate maximum suitable
* bandwidth. Calculating it is responsible of master driver.
*/
dev->f_bandwidth = dev->bandwidth->val;
ret = e4000_set_params(dev);
break;
case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
case V4L2_CID_RF_TUNER_LNA_GAIN:
ret = e4000_set_lna_gain(dev->fe);
break;
case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:
case V4L2_CID_RF_TUNER_MIXER_GAIN:
ret = e4000_set_mixer_gain(dev->fe);
break;
case V4L2_CID_RF_TUNER_IF_GAIN_AUTO:
case V4L2_CID_RF_TUNER_IF_GAIN:
ret = e4000_set_if_gain(dev->fe);
break;
default:
dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n",
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
/*
* DVB API
*/
static int e4000_dvb_set_params(struct dvb_frontend *fe)
{
struct e4000_dev *dev = fe->tuner_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
dev->f_frequency = c->frequency;
dev->f_bandwidth = c->bandwidth_hz;
return e4000_set_params(dev);
}
static int e4000_dvb_init(struct dvb_frontend *fe)
{
return e4000_init(fe->tuner_priv);
}
static int e4000_dvb_sleep(struct dvb_frontend *fe)
{
return e4000_sleep(fe->tuner_priv);
}
static int e4000_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
{
*frequency = 0; /* Zero-IF */
return 0;
}
static const struct dvb_tuner_ops e4000_dvb_tuner_ops = {
.info = {
.name = "Elonics E4000",
.frequency_min_hz = 174 * MHz,
.frequency_max_hz = 862 * MHz,
},
.init = e4000_dvb_init,
.sleep = e4000_dvb_sleep,
.set_params = e4000_dvb_set_params,
.get_if_frequency = e4000_dvb_get_if_frequency,
};
static int e4000_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct e4000_dev *dev;
struct e4000_config *cfg = client->dev.platform_data;
struct dvb_frontend *fe = cfg->fe;
int ret;
unsigned int uitmp;
static const struct regmap_config regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev) {
ret = -ENOMEM;
goto err;
}
dev->clk = cfg->clock;
dev->client = client;
dev->fe = cfg->fe;
dev->regmap = devm_regmap_init_i2c(client, &regmap_config);
if (IS_ERR(dev->regmap)) {
ret = PTR_ERR(dev->regmap);
goto err_kfree;
}
/* check if the tuner is there */
ret = regmap_read(dev->regmap, 0x02, &uitmp);
if (ret)
goto err_kfree;
dev_dbg(&client->dev, "chip id=%02x\n", uitmp);
if (uitmp != 0x40) {
ret = -ENODEV;
goto err_kfree;
}
/* put sleep as chip seems to be in normal mode by default */
ret = regmap_write(dev->regmap, 0x00, 0x00);
if (ret)
goto err_kfree;
#if IS_ENABLED(CONFIG_VIDEO_V4L2)
/* Register controls */
v4l2_ctrl_handler_init(&dev->hdl, 9);
dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1);
dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_BANDWIDTH, 4300000, 11000000, 100000, 4300000);
v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
dev->lna_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 1);
dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_LNA_GAIN, 0, 15, 1, 10);
v4l2_ctrl_auto_cluster(2, &dev->lna_gain_auto, 0, false);
dev->mixer_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 1);
dev->mixer_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1);
v4l2_ctrl_auto_cluster(2, &dev->mixer_gain_auto, 0, false);
dev->if_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_IF_GAIN_AUTO, 0, 1, 1, 1);
dev->if_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_IF_GAIN, 0, 54, 1, 0);
v4l2_ctrl_auto_cluster(2, &dev->if_gain_auto, 0, false);
dev->pll_lock = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops,
V4L2_CID_RF_TUNER_PLL_LOCK, 0, 1, 1, 0);
if (dev->hdl.error) {
ret = dev->hdl.error;
dev_err(&client->dev, "Could not initialize controls\n");
v4l2_ctrl_handler_free(&dev->hdl);
goto err_kfree;
}
dev->sd.ctrl_handler = &dev->hdl;
dev->f_frequency = bands[0].rangelow;
dev->f_bandwidth = dev->bandwidth->val;
v4l2_i2c_subdev_init(&dev->sd, client, &e4000_subdev_ops);
#endif
fe->tuner_priv = dev;
memcpy(&fe->ops.tuner_ops, &e4000_dvb_tuner_ops,
sizeof(fe->ops.tuner_ops));
v4l2_set_subdevdata(&dev->sd, client);
i2c_set_clientdata(client, &dev->sd);
dev_info(&client->dev, "Elonics E4000 successfully identified\n");
return 0;
err_kfree:
kfree(dev);
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int e4000_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct e4000_dev *dev = container_of(sd, struct e4000_dev, sd);
dev_dbg(&client->dev, "\n");
#if IS_ENABLED(CONFIG_VIDEO_V4L2)
v4l2_ctrl_handler_free(&dev->hdl);
#endif
kfree(dev);
return 0;
}
static const struct i2c_device_id e4000_id_table[] = {
{"e4000", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, e4000_id_table);
static struct i2c_driver e4000_driver = {
.driver = {
.name = "e4000",
.suppress_bind_attrs = true,
},
.probe = e4000_probe,
.remove = e4000_remove,
.id_table = e4000_id_table,
};
module_i2c_driver(e4000_driver);
MODULE_DESCRIPTION("Elonics E4000 silicon tuner driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_LICENSE("GPL");
View Git Blame Copy Permalink