linux/drivers/media/tuners/msi001.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Mirics MSi001 silicon tuner driver
 *
 * Copyright (C) 2013 Antti Palosaari <[email protected]>
 * Copyright (C) 2014 Antti Palosaari <[email protected]>
 */

#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[] = …;

struct msi001_dev { … };

static inline struct msi001_dev *sd_to_msi001_dev(struct v4l2_subdev *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)
{ … }

static int msi001_standby(struct v4l2_subdev *sd)
{ … }

static int msi001_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
{ … }

static int msi001_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v)
{ … }

static int msi001_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
{ … }

static int msi001_s_frequency(struct v4l2_subdev *sd,
			      const struct v4l2_frequency *f)
{ … }

static int msi001_enum_freq_bands(struct v4l2_subdev *sd,
				  struct v4l2_frequency_band *band)
{ … }

static const struct v4l2_subdev_tuner_ops msi001_tuner_ops = …;

static const struct v4l2_subdev_ops msi001_ops = …;

static int msi001_s_ctrl(struct v4l2_ctrl *ctrl)
{ … }

static const struct v4l2_ctrl_ops msi001_ctrl_ops = …;

static int msi001_probe(struct spi_device *spi)
{ … }

static void msi001_remove(struct spi_device *spi)
{ … }

static const struct spi_device_id msi001_id_table[] = …;
MODULE_DEVICE_TABLE(spi, msi001_id_table);

static struct spi_driver msi001_driver = …;
module_spi_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;