Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 510 insertions, 0 deletions

diff --git a/drivers/media/tuners/msi001.c b/drivers/media/tuners/msi001.c
new file mode 100644
index 000000000..ad6c72c1e
--- /dev/null
+++ b/drivers/media/tuners/msi001.c
@@ -0,0 +1,510 @@
+// 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");