511 lines
12 KiB
C
511 lines
12 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/*
|
||
|
|
* Mirics MSi001 silicon tuner driver
|
||
|
|
*
|
||
|
|
* Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
|
||
|
|
* Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/gcd.h>
|
||
|
|
#include <media/v4l2-device.h>
|
||
|
|
#include <media/v4l2-ctrls.h>
|
||
|
|
|
||
|
|
static const struct v4l2_frequency_band bands[] = {
|
||
|
|
{
|
||
|
|
.type = V4L2_TUNER_RF,
|
||
|
|
.index = 0,
|
||
|
|
.capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
|
||
|
|
.rangelow = 49000000,
|
||
|
|
.rangehigh = 263000000,
|
||
|
|
}, {
|
||
|
|
.type = V4L2_TUNER_RF,
|
||
|
|
.index = 1,
|
||
|
|
.capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
|
||
|
|
.rangelow = 390000000,
|
||
|
|
.rangehigh = 960000000,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
struct msi001_dev {
|
||
|
|
struct spi_device *spi;
|
||
|
|
struct v4l2_subdev sd;
|
||
|
|
|
||
|
|
/* Controls */
|
||
|
|
struct v4l2_ctrl_handler hdl;
|
||
|
|
struct v4l2_ctrl *bandwidth_auto;
|
||
|
|
struct v4l2_ctrl *bandwidth;
|
||
|
|
struct v4l2_ctrl *lna_gain;
|
||
|
|
struct v4l2_ctrl *mixer_gain;
|
||
|
|
struct v4l2_ctrl *if_gain;
|
||
|
|
|
||
|
|
unsigned int f_tuner;
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline struct msi001_dev *sd_to_msi001_dev(struct v4l2_subdev *sd)
|
||
|
|
{
|
||
|
|
return container_of(sd, struct msi001_dev, sd);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int msi001_wreg(struct msi001_dev *dev, u32 data)
|
||
|
|
{
|
||
|
|
/* Register format: 4 bits addr + 20 bits value */
|
||
|
|
return spi_write(dev->spi, &data, 3);
|
||
|
|
};
|
||
|
|
|
||
|
|
static int msi001_set_gain(struct msi001_dev *dev, int lna_gain, int mixer_gain,
|
||
|
|
int if_gain)
|
||
|
|
{
|
||
|
|
struct spi_device *spi = dev->spi;
|
||
|
|
int ret;
|
||
|
|
u32 reg;
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev, "lna=%d mixer=%d if=%d\n",
|
||
|
|
lna_gain, mixer_gain, if_gain);
|
||
|
|
|
||
|
|
reg = 1 << 0;
|
||
|
|
reg |= (59 - if_gain) << 4;
|
||
|
|
reg |= 0 << 10;
|
||
|
|
reg |= (1 - mixer_gain) << 12;
|
||
|
|
reg |= (1 - lna_gain) << 13;
|
||
|
|
reg |= 4 << 14;
|
||
|
|
reg |= 0 << 17;
|
||
|
|
ret = msi001_wreg(dev, reg);
|
||
|
|
if (ret)
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
err:
|
||
|
|
dev_dbg(&spi->dev, "failed %d\n", ret);
|
||
|
|
return ret;
|
||
|
|
};
|
||
|
|
|
||
|
|
static int msi001_set_tuner(struct msi001_dev *dev)
|
||
|
|
{
|
||
|
|
struct spi_device *spi = dev->spi;
|
||
|
|
int ret, i;
|
||
|
|
unsigned int uitmp, div_n, k, k_thresh, k_frac, div_lo, f_if1;
|
||
|
|
u32 reg;
|
||
|
|
u64 f_vco;
|
||
|
|
u8 mode, filter_mode;
|
||
|
|
|
||
|
|
static const struct {
|
||
|
|
u32 rf;
|
||
|
|
u8 mode;
|
||
|
|
u8 div_lo;
|
||
|
|
} band_lut[] = {
|
||
|
|
{ 50000000, 0xe1, 16}, /* AM_MODE2, antenna 2 */
|
||
|
|
{108000000, 0x42, 32}, /* VHF_MODE */
|
||
|
|
{330000000, 0x44, 16}, /* B3_MODE */
|
||
|
|
{960000000, 0x48, 4}, /* B45_MODE */
|
||
|
|
{ ~0U, 0x50, 2}, /* BL_MODE */
|
||
|
|
};
|
||
|
|
static const struct {
|
||
|
|
u32 freq;
|
||
|
|
u8 filter_mode;
|
||
|
|
} if_freq_lut[] = {
|
||
|
|
{ 0, 0x03}, /* Zero IF */
|
||
|
|
{ 450000, 0x02}, /* 450 kHz IF */
|
||
|
|
{1620000, 0x01}, /* 1.62 MHz IF */
|
||
|
|
{2048000, 0x00}, /* 2.048 MHz IF */
|
||
|
|
};
|
||
|
|
static const struct {
|
||
|
|
u32 freq;
|
||
|
|
u8 val;
|
||
|
|
} bandwidth_lut[] = {
|
||
|
|
{ 200000, 0x00}, /* 200 kHz */
|
||
|
|
{ 300000, 0x01}, /* 300 kHz */
|
||
|
|
{ 600000, 0x02}, /* 600 kHz */
|
||
|
|
{1536000, 0x03}, /* 1.536 MHz */
|
||
|
|
{5000000, 0x04}, /* 5 MHz */
|
||
|
|
{6000000, 0x05}, /* 6 MHz */
|
||
|
|
{7000000, 0x06}, /* 7 MHz */
|
||
|
|
{8000000, 0x07}, /* 8 MHz */
|
||
|
|
};
|
||
|
|
|
||
|
|
unsigned int f_rf = dev->f_tuner;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* bandwidth (Hz)
|
||
|
|
* 200000, 300000, 600000, 1536000, 5000000, 6000000, 7000000, 8000000
|
||
|
|
*/
|
||
|
|
unsigned int bandwidth;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* intermediate frequency (Hz)
|
||
|
|
* 0, 450000, 1620000, 2048000
|
||
|
|
*/
|
||
|
|
unsigned int f_if = 0;
|
||
|
|
#define F_REF 24000000
|
||
|
|
#define DIV_PRE_N 4
|
||
|
|
#define F_VCO_STEP div_lo
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev, "f_rf=%d f_if=%d\n", f_rf, f_if);
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(band_lut); i++) {
|
||
|
|
if (f_rf <= band_lut[i].rf) {
|
||
|
|
mode = band_lut[i].mode;
|
||
|
|
div_lo = band_lut[i].div_lo;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (i == ARRAY_SIZE(band_lut)) {
|
||
|
|
ret = -EINVAL;
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* AM_MODE is upconverted */
|
||
|
|
if ((mode >> 0) & 0x1)
|
||
|
|
f_if1 = 5 * F_REF;
|
||
|
|
else
|
||
|
|
f_if1 = 0;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(if_freq_lut); i++) {
|
||
|
|
if (f_if == if_freq_lut[i].freq) {
|
||
|
|
filter_mode = if_freq_lut[i].filter_mode;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (i == ARRAY_SIZE(if_freq_lut)) {
|
||
|
|
ret = -EINVAL;
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* filters */
|
||
|
|
bandwidth = dev->bandwidth->val;
|
||
|
|
bandwidth = clamp(bandwidth, 200000U, 8000000U);
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(bandwidth_lut); i++) {
|
||
|
|
if (bandwidth <= bandwidth_lut[i].freq) {
|
||
|
|
bandwidth = bandwidth_lut[i].val;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (i == ARRAY_SIZE(bandwidth_lut)) {
|
||
|
|
ret = -EINVAL;
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
|
||
|
|
dev->bandwidth->val = bandwidth_lut[i].freq;
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev, "bandwidth selected=%d\n", bandwidth_lut[i].freq);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Fractional-N synthesizer
|
||
|
|
*
|
||
|
|
* +---------------------------------------+
|
||
|
|
* v |
|
||
|
|
* Fref +----+ +-------+ +----+ +------+ +---+
|
||
|
|
* ------> | PD | --> | VCO | ------> | /4 | --> | /N.F | <-- | K |
|
||
|
|
* +----+ +-------+ +----+ +------+ +---+
|
||
|
|
* |
|
||
|
|
* |
|
||
|
|
* v
|
||
|
|
* +-------+ Fout
|
||
|
|
* | /Rout | ------>
|
||
|
|
* +-------+
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Calculate PLL integer and fractional control word. */
|
||
|
|
f_vco = (u64) (f_rf + f_if + f_if1) * div_lo;
|
||
|
|
div_n = div_u64_rem(f_vco, DIV_PRE_N * F_REF, &k);
|
||
|
|
k_thresh = (DIV_PRE_N * F_REF) / F_VCO_STEP;
|
||
|
|
k_frac = div_u64((u64) k * k_thresh, (DIV_PRE_N * F_REF));
|
||
|
|
|
||
|
|
/* Find out greatest common divisor and divide to smaller. */
|
||
|
|
uitmp = gcd(k_thresh, k_frac);
|
||
|
|
k_thresh /= uitmp;
|
||
|
|
k_frac /= uitmp;
|
||
|
|
|
||
|
|
/* Force divide to reg max. Resolution will be reduced. */
|
||
|
|
uitmp = DIV_ROUND_UP(k_thresh, 4095);
|
||
|
|
k_thresh = DIV_ROUND_CLOSEST(k_thresh, uitmp);
|
||
|
|
k_frac = DIV_ROUND_CLOSEST(k_frac, uitmp);
|
||
|
|
|
||
|
|
/* Calculate real RF set. */
|
||
|
|
uitmp = (unsigned int) F_REF * DIV_PRE_N * div_n;
|
||
|
|
uitmp += (unsigned int) F_REF * DIV_PRE_N * k_frac / k_thresh;
|
||
|
|
uitmp /= div_lo;
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev,
|
||
|
|
"f_rf=%u:%u f_vco=%llu div_n=%u k_thresh=%u k_frac=%u div_lo=%u\n",
|
||
|
|
f_rf, uitmp, f_vco, div_n, k_thresh, k_frac, div_lo);
|
||
|
|
|
||
|
|
ret = msi001_wreg(dev, 0x00000e);
|
||
|
|
if (ret)
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
ret = msi001_wreg(dev, 0x000003);
|
||
|
|
if (ret)
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
reg = 0 << 0;
|
||
|
|
reg |= mode << 4;
|
||
|
|
reg |= filter_mode << 12;
|
||
|
|
reg |= bandwidth << 14;
|
||
|
|
reg |= 0x02 << 17;
|
||
|
|
reg |= 0x00 << 20;
|
||
|
|
ret = msi001_wreg(dev, reg);
|
||
|
|
if (ret)
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
reg = 5 << 0;
|
||
|
|
reg |= k_thresh << 4;
|
||
|
|
reg |= 1 << 19;
|
||
|
|
reg |= 1 << 21;
|
||
|
|
ret = msi001_wreg(dev, reg);
|
||
|
|
if (ret)
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
reg = 2 << 0;
|
||
|
|
reg |= k_frac << 4;
|
||
|
|
reg |= div_n << 16;
|
||
|
|
ret = msi001_wreg(dev, reg);
|
||
|
|
if (ret)
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
ret = msi001_set_gain(dev, dev->lna_gain->cur.val,
|
||
|
|
dev->mixer_gain->cur.val, dev->if_gain->cur.val);
|
||
|
|
if (ret)
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
reg = 6 << 0;
|
||
|
|
reg |= 63 << 4;
|
||
|
|
reg |= 4095 << 10;
|
||
|
|
ret = msi001_wreg(dev, reg);
|
||
|
|
if (ret)
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
err:
|
||
|
|
dev_dbg(&spi->dev, "failed %d\n", ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int msi001_standby(struct v4l2_subdev *sd)
|
||
|
|
{
|
||
|
|
struct msi001_dev *dev = sd_to_msi001_dev(sd);
|
||
|
|
|
||
|
|
return msi001_wreg(dev, 0x000000);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int msi001_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
|
||
|
|
{
|
||
|
|
struct msi001_dev *dev = sd_to_msi001_dev(sd);
|
||
|
|
struct spi_device *spi = dev->spi;
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev, "index=%d\n", v->index);
|
||
|
|
|
||
|
|
strscpy(v->name, "Mirics MSi001", sizeof(v->name));
|
||
|
|
v->type = V4L2_TUNER_RF;
|
||
|
|
v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
|
||
|
|
v->rangelow = 49000000;
|
||
|
|
v->rangehigh = 960000000;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int msi001_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v)
|
||
|
|
{
|
||
|
|
struct msi001_dev *dev = sd_to_msi001_dev(sd);
|
||
|
|
struct spi_device *spi = dev->spi;
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev, "index=%d\n", v->index);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int msi001_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
|
||
|
|
{
|
||
|
|
struct msi001_dev *dev = sd_to_msi001_dev(sd);
|
||
|
|
struct spi_device *spi = dev->spi;
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev, "tuner=%d\n", f->tuner);
|
||
|
|
f->frequency = dev->f_tuner;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int msi001_s_frequency(struct v4l2_subdev *sd,
|
||
|
|
const struct v4l2_frequency *f)
|
||
|
|
{
|
||
|
|
struct msi001_dev *dev = sd_to_msi001_dev(sd);
|
||
|
|
struct spi_device *spi = dev->spi;
|
||
|
|
unsigned int band;
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev, "tuner=%d type=%d frequency=%u\n",
|
||
|
|
f->tuner, f->type, f->frequency);
|
||
|
|
|
||
|
|
if (f->frequency < ((bands[0].rangehigh + bands[1].rangelow) / 2))
|
||
|
|
band = 0;
|
||
|
|
else
|
||
|
|
band = 1;
|
||
|
|
dev->f_tuner = clamp_t(unsigned int, f->frequency,
|
||
|
|
bands[band].rangelow, bands[band].rangehigh);
|
||
|
|
|
||
|
|
return msi001_set_tuner(dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int msi001_enum_freq_bands(struct v4l2_subdev *sd,
|
||
|
|
struct v4l2_frequency_band *band)
|
||
|
|
{
|
||
|
|
struct msi001_dev *dev = sd_to_msi001_dev(sd);
|
||
|
|
struct spi_device *spi = dev->spi;
|
||
|
|
|
||
|
|
dev_dbg(&spi->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 msi001_tuner_ops = {
|
||
|
|
.standby = msi001_standby,
|
||
|
|
.g_tuner = msi001_g_tuner,
|
||
|
|
.s_tuner = msi001_s_tuner,
|
||
|
|
.g_frequency = msi001_g_frequency,
|
||
|
|
.s_frequency = msi001_s_frequency,
|
||
|
|
.enum_freq_bands = msi001_enum_freq_bands,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct v4l2_subdev_ops msi001_ops = {
|
||
|
|
.tuner = &msi001_tuner_ops,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int msi001_s_ctrl(struct v4l2_ctrl *ctrl)
|
||
|
|
{
|
||
|
|
struct msi001_dev *dev = container_of(ctrl->handler, struct msi001_dev, hdl);
|
||
|
|
struct spi_device *spi = dev->spi;
|
||
|
|
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n",
|
||
|
|
ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum,
|
||
|
|
ctrl->step);
|
||
|
|
|
||
|
|
switch (ctrl->id) {
|
||
|
|
case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
|
||
|
|
case V4L2_CID_RF_TUNER_BANDWIDTH:
|
||
|
|
ret = msi001_set_tuner(dev);
|
||
|
|
break;
|
||
|
|
case V4L2_CID_RF_TUNER_LNA_GAIN:
|
||
|
|
ret = msi001_set_gain(dev, dev->lna_gain->val,
|
||
|
|
dev->mixer_gain->cur.val,
|
||
|
|
dev->if_gain->cur.val);
|
||
|
|
break;
|
||
|
|
case V4L2_CID_RF_TUNER_MIXER_GAIN:
|
||
|
|
ret = msi001_set_gain(dev, dev->lna_gain->cur.val,
|
||
|
|
dev->mixer_gain->val,
|
||
|
|
dev->if_gain->cur.val);
|
||
|
|
break;
|
||
|
|
case V4L2_CID_RF_TUNER_IF_GAIN:
|
||
|
|
ret = msi001_set_gain(dev, dev->lna_gain->cur.val,
|
||
|
|
dev->mixer_gain->cur.val,
|
||
|
|
dev->if_gain->val);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
dev_dbg(&spi->dev, "unknown control %d\n", ctrl->id);
|
||
|
|
ret = -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct v4l2_ctrl_ops msi001_ctrl_ops = {
|
||
|
|
.s_ctrl = msi001_s_ctrl,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int msi001_probe(struct spi_device *spi)
|
||
|
|
{
|
||
|
|
struct msi001_dev *dev;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev, "\n");
|
||
|
|
|
||
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
||
|
|
if (!dev) {
|
||
|
|
ret = -ENOMEM;
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
|
||
|
|
dev->spi = spi;
|
||
|
|
dev->f_tuner = bands[0].rangelow;
|
||
|
|
v4l2_spi_subdev_init(&dev->sd, spi, &msi001_ops);
|
||
|
|
|
||
|
|
/* Register controls */
|
||
|
|
v4l2_ctrl_handler_init(&dev->hdl, 5);
|
||
|
|
dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops,
|
||
|
|
V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1);
|
||
|
|
dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops,
|
||
|
|
V4L2_CID_RF_TUNER_BANDWIDTH, 200000, 8000000, 1, 200000);
|
||
|
|
if (dev->hdl.error) {
|
||
|
|
ret = dev->hdl.error;
|
||
|
|
dev_err(&spi->dev, "Could not initialize controls\n");
|
||
|
|
/* control init failed, free handler */
|
||
|
|
goto err_ctrl_handler_free;
|
||
|
|
}
|
||
|
|
|
||
|
|
v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
|
||
|
|
dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops,
|
||
|
|
V4L2_CID_RF_TUNER_LNA_GAIN, 0, 1, 1, 1);
|
||
|
|
dev->mixer_gain = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops,
|
||
|
|
V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1);
|
||
|
|
dev->if_gain = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops,
|
||
|
|
V4L2_CID_RF_TUNER_IF_GAIN, 0, 59, 1, 0);
|
||
|
|
if (dev->hdl.error) {
|
||
|
|
ret = dev->hdl.error;
|
||
|
|
dev_err(&spi->dev, "Could not initialize controls\n");
|
||
|
|
/* control init failed, free handler */
|
||
|
|
goto err_ctrl_handler_free;
|
||
|
|
}
|
||
|
|
|
||
|
|
dev->sd.ctrl_handler = &dev->hdl;
|
||
|
|
return 0;
|
||
|
|
err_ctrl_handler_free:
|
||
|
|
v4l2_ctrl_handler_free(&dev->hdl);
|
||
|
|
kfree(dev);
|
||
|
|
err:
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void msi001_remove(struct spi_device *spi)
|
||
|
|
{
|
||
|
|
struct v4l2_subdev *sd = spi_get_drvdata(spi);
|
||
|
|
struct msi001_dev *dev = sd_to_msi001_dev(sd);
|
||
|
|
|
||
|
|
dev_dbg(&spi->dev, "\n");
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Registered by v4l2_spi_new_subdev() from master driver, but we must
|
||
|
|
* unregister it from here. Weird.
|
||
|
|
*/
|
||
|
|
v4l2_device_unregister_subdev(&dev->sd);
|
||
|
|
v4l2_ctrl_handler_free(&dev->hdl);
|
||
|
|
kfree(dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct spi_device_id msi001_id_table[] = {
|
||
|
|
{"msi001", 0},
|
||
|
|
{}
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(spi, msi001_id_table);
|
||
|
|
|
||
|
|
static struct spi_driver msi001_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "msi001",
|
||
|
|
.suppress_bind_attrs = true,
|
||
|
|
},
|
||
|
|
.probe = msi001_probe,
|
||
|
|
.remove = msi001_remove,
|
||
|
|
.id_table = msi001_id_table,
|
||
|
|
};
|
||
|
|
module_spi_driver(msi001_driver);
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
|
||
|
|
MODULE_DESCRIPTION("Mirics MSi001");
|
||
|
|
MODULE_LICENSE("GPL");
|