[media] Afatech AF9033 DVB-T demodulator driver

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

5 files changed, 1027 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig
index 21246707fbfb..e11adb64e9e6 100644
--- a/drivers/media/dvb/frontends/Kconfig
+++ b/drivers/media/dvb/frontends/Kconfig
@@ -713,6 +713,11 @@ config DVB_M88RS2000
 	  A DVB-S tuner module.
 	  Say Y when you want to support this frontend.
 
+config DVB_AF9033
+	tristate "Afatech AF9033 DVB-T demodulator"
+	depends on DVB_CORE && I2C
+	default m if DVB_FE_CUSTOMISE
+
 comment "Tools to develop new frontends"
 
 config DVB_DUMMY_FE
diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile
index 86fa808bf589..6ca75578ecac 100644
--- a/drivers/media/dvb/frontends/Makefile
+++ b/drivers/media/dvb/frontends/Makefile
@@ -98,4 +98,5 @@ obj-$(CONFIG_DVB_A8293) += a8293.o
 obj-$(CONFIG_DVB_TDA10071) += tda10071.o
 obj-$(CONFIG_DVB_RTL2830) += rtl2830.o
 obj-$(CONFIG_DVB_M88RS2000) += m88rs2000.o
+obj-$(CONFIG_DVB_AF9033) += af9033.o
 
diff --git a/drivers/media/dvb/frontends/af9033.c b/drivers/media/dvb/frontends/af9033.c
new file mode 100644
index 000000000000..161bbe5f2e3f
--- /dev/null
+++ b/drivers/media/dvb/frontends/af9033.c
@@ -0,0 +1,706 @@
+/*
+ * Afatech AF9033 demodulator driver
+ *
+ * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
+ * 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 "af9033_priv.h"
+
+struct af9033_state {
+	struct i2c_adapter *i2c;
+	struct dvb_frontend fe;
+	struct af9033_config cfg;
+
+	u32 bandwidth_hz;
+	bool ts_mode_parallel;
+	bool ts_mode_serial;
+};
+
+/* write multiple registers */
+static int af9033_wr_regs(struct af9033_state *state, u32 reg, const u8 *val,
+		int len)
+{
+	int ret;
+	u8 buf[3 + len];
+	struct i2c_msg msg[1] = {
+		{
+			.addr = state->cfg.i2c_addr,
+			.flags = 0,
+			.len = sizeof(buf),
+			.buf = buf,
+		}
+	};
+
+	buf[0] = (reg >> 16) & 0xff;
+	buf[1] = (reg >>  8) & 0xff;
+	buf[2] = (reg >>  0) & 0xff;
+	memcpy(&buf[3], val, len);
+
+	ret = i2c_transfer(state->i2c, msg, 1);
+	if (ret == 1) {
+		ret = 0;
+	} else {
+		printk(KERN_WARNING "%s: i2c wr failed=%d reg=%06x len=%d\n",
+				__func__, ret, reg, len);
+		ret = -EREMOTEIO;
+	}
+
+	return ret;
+}
+
+/* read multiple registers */
+static int af9033_rd_regs(struct af9033_state *state, u32 reg, u8 *val, int len)
+{
+	int ret;
+	u8 buf[3] = { (reg >> 16) & 0xff, (reg >> 8) & 0xff,
+			(reg >> 0) & 0xff };
+	struct i2c_msg msg[2] = {
+		{
+			.addr = state->cfg.i2c_addr,
+			.flags = 0,
+			.len = sizeof(buf),
+			.buf = buf
+		}, {
+			.addr = state->cfg.i2c_addr,
+			.flags = I2C_M_RD,
+			.len = len,
+			.buf = val
+		}
+	};
+
+	ret = i2c_transfer(state->i2c, msg, 2);
+	if (ret == 2) {
+		ret = 0;
+	} else {
+		printk(KERN_WARNING "%s: i2c rd failed=%d reg=%06x len=%d\n",
+				__func__, ret, reg, len);
+		ret = -EREMOTEIO;
+	}
+
+	return ret;
+}
+
+
+/* write single register */
+static int af9033_wr_reg(struct af9033_state *state, u32 reg, u8 val)
+{
+	return af9033_wr_regs(state, reg, &val, 1);
+}
+
+/* read single register */
+static int af9033_rd_reg(struct af9033_state *state, u32 reg, u8 *val)
+{
+	return af9033_rd_regs(state, reg, val, 1);
+}
+
+/* write single register with mask */
+static int af9033_wr_reg_mask(struct af9033_state *state, u32 reg, u8 val,
+		u8 mask)
+{
+	int ret;
+	u8 tmp;
+
+	/* no need for read if whole reg is written */
+	if (mask != 0xff) {
+		ret = af9033_rd_regs(state, reg, &tmp, 1);
+		if (ret)
+			return ret;
+
+		val &= mask;
+		tmp &= ~mask;
+		val |= tmp;
+	}
+
+	return af9033_wr_regs(state, reg, &val, 1);
+}
+
+/* read single register with mask */
+static int af9033_rd_reg_mask(struct af9033_state *state, u32 reg, u8 *val,
+		u8 mask)
+{
+	int ret, i;
+	u8 tmp;
+
+	ret = af9033_rd_regs(state, reg, &tmp, 1);
+	if (ret)
+		return ret;
+
+	tmp &= mask;
+
+	/* find position of the first bit */
+	for (i = 0; i < 8; i++) {
+		if ((mask >> i) & 0x01)
+			break;
+	}
+	*val = tmp >> i;
+
+	return 0;
+}
+
+static u32 af9033_div(u32 a, u32 b, u32 x)
+{
+	u32 r = 0, c = 0, i;
+
+	pr_debug("%s: a=%d b=%d x=%d\n", __func__, a, b, x);
+
+	if (a > b) {
+		c = a / b;
+		a = a - c * b;
+	}
+
+	for (i = 0; i < x; i++) {
+		if (a >= b) {
+			r += 1;
+			a -= b;
+		}
+		a <<= 1;
+		r <<= 1;
+	}
+	r = (c << (u32)x) + r;
+
+	pr_debug("%s: a=%d b=%d x=%d r=%d r=%x\n", __func__, a, b, x, r, r);
+
+	return r;
+}
+
+static void af9033_release(struct dvb_frontend *fe)
+{
+	struct af9033_state *state = fe->demodulator_priv;
+
+	kfree(state);
+}
+
+static int af9033_init(struct dvb_frontend *fe)
+{
+	struct af9033_state *state = fe->demodulator_priv;
+	int ret, i, len;
+	const struct reg_val *init;
+	u8 buf[4];
+	u32 adc_cw, clock_cw;
+	struct reg_val_mask tab[] = {
+		{ 0x80fb24, 0x00, 0x08 },
+		{ 0x80004c, 0x00, 0xff },
+		{ 0x00f641, state->cfg.tuner, 0xff },
+		{ 0x80f5ca, 0x01, 0x01 },
+		{ 0x80f715, 0x01, 0x01 },
+		{ 0x00f41f, 0x04, 0x04 },
+		{ 0x00f41a, 0x01, 0x01 },
+		{ 0x80f731, 0x00, 0x01 },
+		{ 0x00d91e, 0x00, 0x01 },
+		{ 0x00d919, 0x00, 0x01 },
+		{ 0x80f732, 0x00, 0x01 },
+		{ 0x00d91f, 0x00, 0x01 },
+		{ 0x00d91a, 0x00, 0x01 },
+		{ 0x80f730, 0x00, 0x01 },
+		{ 0x80f778, 0x00, 0xff },
+		{ 0x80f73c, 0x01, 0x01 },
+		{ 0x80f776, 0x00, 0x01 },
+		{ 0x00d8fd, 0x01, 0xff },
+		{ 0x00d830, 0x01, 0xff },
+		{ 0x00d831, 0x00, 0xff },
+		{ 0x00d832, 0x00, 0xff },
+		{ 0x80f985, state->ts_mode_serial, 0x01 },
+		{ 0x80f986, state->ts_mode_parallel, 0x01 },
+		{ 0x00d827, 0x00, 0xff },
+		{ 0x00d829, 0x00, 0xff },
+	};
+
+	/* program clock control */
+	clock_cw = af9033_div(state->cfg.clock, 1000000ul, 19ul);
+	buf[0] = (clock_cw >>  0) & 0xff;
+	buf[1] = (clock_cw >>  8) & 0xff;
+	buf[2] = (clock_cw >> 16) & 0xff;
+	buf[3] = (clock_cw >> 24) & 0xff;
+
+	pr_debug("%s: clock=%d clock_cw=%08x\n", __func__, state->cfg.clock,
+			clock_cw);
+
+	ret = af9033_wr_regs(state, 0x800025, buf, 4);
+	if (ret < 0)
+		goto err;
+
+	/* program ADC control */
+	for (i = 0; i < ARRAY_SIZE(clock_adc_lut); i++) {
+		if (clock_adc_lut[i].clock == state->cfg.clock)
+			break;
+	}
+
+	adc_cw = af9033_div(clock_adc_lut[i].adc, 1000000ul, 19ul);
+	buf[0] = (adc_cw >>  0) & 0xff;
+	buf[1] = (adc_cw >>  8) & 0xff;
+	buf[2] = (adc_cw >> 16) & 0xff;
+
+	pr_debug("%s: adc=%d adc_cw=%06x\n", __func__, clock_adc_lut[i].adc,
+			adc_cw);
+
+	ret = af9033_wr_regs(state, 0x80f1cd, buf, 3);
+	if (ret < 0)
+		goto err;
+
+	/* program register table */
+	for (i = 0; i < ARRAY_SIZE(tab); i++) {
+		ret = af9033_wr_reg_mask(state, tab[i].reg, tab[i].val,
+				tab[i].mask);
+		if (ret < 0)
+			goto err;
+	}
+
+	/* settings for TS interface */
+	if (state->cfg.ts_mode == AF9033_TS_MODE_USB) {
+		ret = af9033_wr_reg_mask(state, 0x80f9a5, 0x00, 0x01);
+		if (ret < 0)
+			goto err;
+
+		ret = af9033_wr_reg_mask(state, 0x80f9b5, 0x01, 0x01);
+		if (ret < 0)
+			goto err;
+	} else {
+		ret = af9033_wr_reg_mask(state, 0x80f990, 0x00, 0x01);
+		if (ret < 0)
+			goto err;
+
+		ret = af9033_wr_reg_mask(state, 0x80f9b5, 0x00, 0x01);
+		if (ret < 0)
+			goto err;
+	}
+
+	/* load OFSM settings */
+	pr_debug("%s: load ofsm settings\n", __func__);
+	len = ARRAY_SIZE(ofsm_init);
+	init = ofsm_init;
+	for (i = 0; i < len; i++) {
+		ret = af9033_wr_reg(state, init[i].reg, init[i].val);
+		if (ret < 0)
+			goto err;
+	}
+
+	/* load tuner specific settings */
+	pr_debug("%s: load tuner specific settings\n",
+			__func__);
+	switch (state->cfg.tuner) {
+	case AF9033_TUNER_TUA9001:
+		len = ARRAY_SIZE(tuner_init_tua9001);
+		init = tuner_init_tua9001;
+		break;
+	default:
+		pr_debug("%s: unsupported tuner ID=%d\n", __func__,
+				state->cfg.tuner);
+		ret = -ENODEV;
+		goto err;
+	}
+
+	for (i = 0; i < len; i++) {
+		ret = af9033_wr_reg(state, init[i].reg, init[i].val);
+		if (ret < 0)
+			goto err;
+	}
+
+	state->bandwidth_hz = 0; /* force to program all parameters */
+
+	return 0;
+
+err:
+	pr_debug("%s: failed=%d\n", __func__, ret);
+
+	return ret;
+}
+
+static int af9033_sleep(struct dvb_frontend *fe)
+{
+	struct af9033_state *state = fe->demodulator_priv;
+	int ret, i;
+	u8 tmp;
+
+	ret = af9033_wr_reg(state, 0x80004c, 1);
+	if (ret < 0)
+		goto err;
+
+	ret = af9033_wr_reg(state, 0x800000, 0);
+	if (ret < 0)
+		goto err;
+
+	for (i = 100, tmp = 1; i && tmp; i--) {
+		ret = af9033_rd_reg(state, 0x80004c, &tmp);
+		if (ret < 0)
+			goto err;
+
+		usleep_range(200, 10000);
+	}
+
+	pr_debug("%s: loop=%d", __func__, i);
+
+	if (i == 0) {
+		ret = -ETIMEDOUT;
+		goto err;
+	}
+
+	ret = af9033_wr_reg_mask(state, 0x80fb24, 0x08, 0x08);
+	if (ret < 0)
+		goto err;
+
+	/* prevent current leak (?) */
+	if (state->cfg.ts_mode == AF9033_TS_MODE_SERIAL) {
+		/* enable parallel TS */
+		ret = af9033_wr_reg_mask(state, 0x00d917, 0x00, 0x01);
+		if (ret < 0)
+			goto err;
+
+		ret = af9033_wr_reg_mask(state, 0x00d916, 0x01, 0x01);
+		if (ret < 0)
+			goto err;
+	}
+
+	return 0;
+
+err:
+	pr_debug("%s: failed=%d\n", __func__, ret);
+
+	return ret;
+}
+
+static int af9033_get_tune_settings(struct dvb_frontend *fe,
+		struct dvb_frontend_tune_settings *fesettings)
+{
+	fesettings->min_delay_ms = 800;
+	fesettings->step_size = 0;
+	fesettings->max_drift = 0;
+
+	return 0;
+}
+
+static int af9033_set_frontend(struct dvb_frontend *fe)
+{
+	struct af9033_state *state = fe->demodulator_priv;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	int ret, i;
+	u8 tmp, buf[3], bandwidth_reg_val;
+	u32 if_frequency, freq_cw;
+
+	pr_debug("%s: frequency=%d bandwidth_hz=%d\n", __func__, c->frequency,
+			c->bandwidth_hz);
+
+	/* check bandwidth */
+	switch (c->bandwidth_hz) {
+	case 6000000:
+		bandwidth_reg_val = 0x00;
+		break;
+	case 7000000:
+		bandwidth_reg_val = 0x01;
+		break;
+	case 8000000:
+		bandwidth_reg_val = 0x02;
+		break;
+	default:
+		pr_debug("%s: invalid bandwidth_hz\n", __func__);
+		ret = -EINVAL;
+		goto err;
+	}
+
+	/* program tuner */
+	if (fe->ops.tuner_ops.set_params)
+		fe->ops.tuner_ops.set_params(fe);
+
+	/* program CFOE coefficients */
+	if (c->bandwidth_hz != state->bandwidth_hz) {
+		for (i = 0; i < ARRAY_SIZE(coeff_lut); i++) {
+			if (coeff_lut[i].clock == state->cfg.clock &&
+				coeff_lut[i].bandwidth_hz == c->bandwidth_hz) {
+				break;
+			}
+		}
+		ret =  af9033_wr_regs(state, 0x800001,
+				coeff_lut[i].val, sizeof(coeff_lut[i].val));
+	}
+
+	/* program frequency control */
+	if (c->bandwidth_hz != state->bandwidth_hz) {
+		/* get used IF frequency */
+		if (fe->ops.tuner_ops.get_if_frequency)
+			fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency);
+		else
+			if_frequency = 0;
+
+		/* FIXME: we support only Zero-IF currently */
+		if (if_frequency != 0) {
+			pr_debug("%s: only Zero-IF supported currently\n",
+				__func__);
+
+			ret = -ENODEV;
+			goto err;
+		}
+
+		freq_cw = 0;
+		buf[0] = (freq_cw >>  0) & 0xff;
+		buf[1] = (freq_cw >>  8) & 0xff;
+		buf[2] = (freq_cw >> 16) & 0x7f;
+		ret = af9033_wr_regs(state, 0x800029, buf, 3);
+		if (ret < 0)
+			goto err;
+
+		state->bandwidth_hz = c->bandwidth_hz;
+	}
+
+	ret = af9033_wr_reg_mask(state, 0x80f904, bandwidth_reg_val, 0x03);
+	if (ret < 0)
+		goto err;
+
+	ret = af9033_wr_reg(state, 0x800040, 0x00);
+	if (ret < 0)
+		goto err;
+
+	ret = af9033_wr_reg(state, 0x800047, 0x00);
+	if (ret < 0)
+		goto err;
+
+	ret = af9033_wr_reg_mask(state, 0x80f999, 0x00, 0x01);
+	if (ret < 0)
+		goto err;
+
+	if (c->frequency <= 230000000)
+		tmp = 0x00; /* VHF */
+	else
+		tmp = 0x01; /* UHF */
+
+	ret = af9033_wr_reg(state, 0x80004b, tmp);
+	if (ret < 0)
+		goto err;
+
+	ret = af9033_wr_reg(state, 0x800000, 0x00);
+	if (ret < 0)
+		goto err;
+
+	return 0;
+
+err:
+	pr_debug("%s: failed=%d\n", __func__, ret);
+
+	return ret;
+}
+
+static int af9033_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+	struct af9033_state *state = fe->demodulator_priv;
+	int ret;
+	u8 tmp;
+
+	*status = 0;
+
+	/* radio channel status, 0=no result, 1=has signal, 2=no signal */
+	ret = af9033_rd_reg(state, 0x800047, &tmp);
+	if (ret < 0)
+		goto err;
+
+	/* has signal */
+	if (tmp == 0x01)
+		*status |= FE_HAS_SIGNAL;
+
+	if (tmp != 0x02) {
+		/* TPS lock */
+		ret = af9033_rd_reg_mask(state, 0x80f5a9, &tmp, 0x01);
+		if (ret < 0)
+			goto err;
+
+		if (tmp)
+			*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
+					FE_HAS_VITERBI;
+
+		/* full lock */
+		ret = af9033_rd_reg_mask(state, 0x80f999, &tmp, 0x01);
+		if (ret < 0)
+			goto err;
+
+		if (tmp)
+			*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
+					FE_HAS_VITERBI | FE_HAS_SYNC |
+					FE_HAS_LOCK;
+	}
+
+	return 0;
+
+err:
+	pr_debug("%s: failed=%d\n", __func__, ret);
+
+	return ret;
+}
+
+static int af9033_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+	*snr = 0;
+
+	return 0;
+}
+
+static int af9033_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
+{
+	struct af9033_state *state = fe->demodulator_priv;
+	int ret;
+	u8 strength2;
+
+	/* read signal strength of 0-100 scale */
+	ret = af9033_rd_reg(state, 0x800048, &strength2);
+	if (ret < 0)
+		goto err;
+
+	/* scale value to 0x0000-0xffff */
+	*strength = strength2 * 0xffff / 100;
+
+	return 0;
+
+err:
+	pr_debug("%s: failed=%d\n", __func__, ret);
+
+	return ret;
+}
+
+static int af9033_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+	*ber = 0;
+
+	return 0;
+}
+
+static int af9033_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+	*ucblocks = 0;
+
+	return 0;
+}
+
+static int af9033_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
+{
+	struct af9033_state *state = fe->demodulator_priv;
+	int ret;
+
+	pr_debug("%s: enable=%d\n", __func__, enable);
+
+	ret = af9033_wr_reg_mask(state, 0x00fa04, enable, 0x01);
+	if (ret < 0)
+		goto err;
+
+	return 0;
+
+err:
+	pr_debug("%s: failed=%d\n", __func__, ret);
+
+	return ret;
+}
+
+static struct dvb_frontend_ops af9033_ops;
+
+struct dvb_frontend *af9033_attach(const struct af9033_config *config,
+		struct i2c_adapter *i2c)
+{
+	int ret;
+	struct af9033_state *state;
+	u8 buf[8];
+
+	pr_debug("%s:\n", __func__);
+
+	/* allocate memory for the internal state */
+	state = kzalloc(sizeof(struct af9033_state), GFP_KERNEL);
+	if (state == NULL)
+		goto err;
+
+	/* setup the state */
+	state->i2c = i2c;
+	memcpy(&state->cfg, config, sizeof(struct af9033_config));
+
+	/* firmware version */
+	ret = af9033_rd_regs(state, 0x0083e9, &buf[0], 4);
+	if (ret < 0)
+		goto err;
+
+	ret = af9033_rd_regs(state, 0x804191, &buf[4], 4);
+	if (ret < 0)
+		goto err;
+
+	printk(KERN_INFO "af9033: firmware version: LINK=%d.%d.%d.%d " \
+			"OFDM=%d.%d.%d.%d\n", buf[0], buf[1], buf[2], buf[3],
+			buf[4], buf[5], buf[6], buf[7]);
+
+	/* configure internal TS mode */
+	switch (state->cfg.ts_mode) {
+	case AF9033_TS_MODE_PARALLEL:
+		state->ts_mode_parallel = true;
+		break;
+	case AF9033_TS_MODE_SERIAL:
+		state->ts_mode_serial = true;
+		break;
+	case AF9033_TS_MODE_USB:
+		/* usb mode for AF9035 */
+	default:
+		break;
+	}
+
+	/* create dvb_frontend */
+	memcpy(&state->fe.ops, &af9033_ops, sizeof(struct dvb_frontend_ops));
+	state->fe.demodulator_priv = state;
+
+	return &state->fe;
+
+err:
+	kfree(state);
+	return NULL;
+}
+EXPORT_SYMBOL(af9033_attach);
+
+static struct dvb_frontend_ops af9033_ops = {
+	.delsys = { SYS_DVBT },
+	.info = {
+		.name = "Afatech AF9033 (DVB-T)",
+		.frequency_min = 174000000,
+		.frequency_max = 862000000,
+		.frequency_stepsize = 250000,
+		.frequency_tolerance = 0,
+		.caps =	FE_CAN_FEC_1_2 |
+			FE_CAN_FEC_2_3 |
+			FE_CAN_FEC_3_4 |
+			FE_CAN_FEC_5_6 |
+			FE_CAN_FEC_7_8 |
+			FE_CAN_FEC_AUTO |
+			FE_CAN_QPSK |
+			FE_CAN_QAM_16 |
+			FE_CAN_QAM_64 |
+			FE_CAN_QAM_AUTO |
+			FE_CAN_TRANSMISSION_MODE_AUTO |
+			FE_CAN_GUARD_INTERVAL_AUTO |
+			FE_CAN_HIERARCHY_AUTO |
+			FE_CAN_RECOVER |
+			FE_CAN_MUTE_TS
+	},
+
+	.release = af9033_release,
+
+	.init = af9033_init,
+	.sleep = af9033_sleep,
+
+	.get_tune_settings = af9033_get_tune_settings,
+	.set_frontend = af9033_set_frontend,
+
+	.read_status = af9033_read_status,
+	.read_snr = af9033_read_snr,
+	.read_signal_strength = af9033_read_signal_strength,
+	.read_ber = af9033_read_ber,
+	.read_ucblocks = af9033_read_ucblocks,
+
+	.i2c_gate_ctrl = af9033_i2c_gate_ctrl,
+};
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("Afatech AF9033 DVB-T demodulator driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb/frontends/af9033.h b/drivers/media/dvb/frontends/af9033.h
new file mode 100644
index 000000000000..af8c1e3e30d0
--- /dev/null
+++ b/drivers/media/dvb/frontends/af9033.h
@@ -0,0 +1,73 @@
+/*
+ * Afatech AF9033 demodulator driver
+ *
+ * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
+ * 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.
+ */
+
+#ifndef AF9033_H
+#define AF9033_H
+
+struct af9033_config {
+	/*
+	 * I2C address
+	 */
+	u8 i2c_addr;
+
+	/*
+	 * clock Hz
+	 * 12000000, 22000000, 24000000, 34000000, 32000000, 28000000, 26000000,
+	 * 30000000, 36000000, 20480000, 16384000
+	 */
+	u32 clock;
+
+	/*
+	 * tuner
+	 */
+#define AF9033_TUNER_TUA9001     0x27 /* Infineon TUA 9001 */
+#define AF9033_TUNER_FC0011      0x28 /* Fitipower FC0011 */
+	u8 tuner;
+
+	/*
+	 * TS settings
+	 */
+#define AF9033_TS_MODE_USB       0
+#define AF9033_TS_MODE_PARALLEL  1
+#define AF9033_TS_MODE_SERIAL    2
+	u8 ts_mode:2;
+
+	/*
+	 * input spectrum inversion
+	 */
+	bool spec_inv;
+};
+
+
+#if defined(CONFIG_DVB_AF9033) || \
+	(defined(CONFIG_DVB_AF9033_MODULE) && defined(MODULE))
+extern struct dvb_frontend *af9033_attach(const struct af9033_config *config,
+	struct i2c_adapter *i2c);
+#else
+static inline struct dvb_frontend *af9033_attach(
+	const struct af9033_config *config, struct i2c_adapter *i2c)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif
+
+#endif /* AF9033_H */
diff --git a/drivers/media/dvb/frontends/af9033_priv.h b/drivers/media/dvb/frontends/af9033_priv.h
new file mode 100644
index 000000000000..2bf579d89a83
--- /dev/null
+++ b/drivers/media/dvb/frontends/af9033_priv.h
@@ -0,0 +1,242 @@
+/*
+ * Afatech AF9033 demodulator driver
+ *
+ * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
+ * 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.
+ */
+
+#ifndef AF9033_PRIV_H
+#define AF9033_PRIV_H
+
+#include "dvb_frontend.h"
+#include "af9033.h"
+
+struct reg_val {
+	u32 reg;
+	u8  val;
+};
+
+struct reg_val_mask {
+	u32 reg;
+	u8  val;
+	u8  mask;
+};
+
+struct coeff {
+	u32 clock;
+	u32 bandwidth_hz;
+	u8 val[36];
+};
+
+struct clock_adc {
+	u32 clock;
+	u32 adc;
+};
+
+/* Xtal clock vs. ADC clock lookup table */
+static const struct clock_adc clock_adc_lut[] = {
+	{ 16384000, 20480000 },
+	{ 20480000, 20480000 },
+	{ 36000000, 20250000 },
+	{ 30000000, 20156250 },
+	{ 26000000, 20583333 },
+	{ 28000000, 20416667 },
+	{ 32000000, 20500000 },
+	{ 34000000, 20187500 },
+	{ 24000000, 20500000 },
+	{ 22000000, 20625000 },
+	{ 12000000, 20250000 },
+};
+
+/* pre-calculated coeff lookup table */
+static const struct coeff coeff_lut[] = {
+	/* 12.000 MHz */
+	{ 12000000, 8000000, {
+		0x01, 0xce, 0x55, 0xc9, 0x00, 0xe7, 0x2a, 0xe4, 0x00, 0x73,
+		0x99, 0x0f, 0x00, 0x73, 0x95, 0x72, 0x00, 0x73, 0x91, 0xd5,
+		0x00, 0x39, 0xca, 0xb9, 0x00, 0xe7, 0x2a, 0xe4, 0x00, 0x73,
+		0x95, 0x72, 0x37, 0x02, 0xce, 0x01 }
+	},
+	{ 12000000, 7000000, {
+		0x01, 0x94, 0x8b, 0x10, 0x00, 0xca, 0x45, 0x88, 0x00, 0x65,
+		0x25, 0xed, 0x00, 0x65, 0x22, 0xc4, 0x00, 0x65, 0x1f, 0x9b,
+		0x00, 0x32, 0x91, 0x62, 0x00, 0xca, 0x45, 0x88, 0x00, 0x65,
+		0x22, 0xc4, 0x88, 0x02, 0x95, 0x01 }
+	},
+	{ 12000000, 6000000, {
+		0x01, 0x5a, 0xc0, 0x56, 0x00, 0xad, 0x60, 0x2b, 0x00, 0x56,
+		0xb2, 0xcb, 0x00, 0x56, 0xb0, 0x15, 0x00, 0x56, 0xad, 0x60,
+		0x00, 0x2b, 0x58, 0x0b, 0x00, 0xad, 0x60, 0x2b, 0x00, 0x56,
+		0xb0, 0x15, 0xf4, 0x02, 0x5b, 0x01 }
+	},
+};
+
+static const struct reg_val ofsm_init[] = {
+	{ 0x800051, 0x01 },
+	{ 0x800070, 0x0a },
+	{ 0x80007e, 0x04 },
+	{ 0x800081, 0x0a },
+	{ 0x80008a, 0x01 },
+	{ 0x80008e, 0x01 },
+	{ 0x800092, 0x06 },
+	{ 0x800099, 0x01 },
+	{ 0x80009f, 0xe1 },
+	{ 0x8000a0, 0xcf },
+	{ 0x8000a3, 0x01 },
+	{ 0x8000a5, 0x01 },
+	{ 0x8000a6, 0x01 },
+	{ 0x8000a9, 0x00 },
+	{ 0x8000aa, 0x01 },
+	{ 0x8000ab, 0x01 },
+	{ 0x8000b0, 0x01 },
+	{ 0x8000c0, 0x05 },
+	{ 0x8000c4, 0x19 },
+	{ 0x80f000, 0x0f },
+	{ 0x80f016, 0x10 },
+	{ 0x80f017, 0x04 },
+	{ 0x80f018, 0x05 },
+	{ 0x80f019, 0x04 },
+	{ 0x80f01a, 0x05 },
+	{ 0x80f021, 0x03 },
+	{ 0x80f022, 0x0a },
+	{ 0x80f023, 0x0a },
+	{ 0x80f02b, 0x00 },
+	{ 0x80f02c, 0x01 },
+	{ 0x80f064, 0x03 },
+	{ 0x80f065, 0xf9 },
+	{ 0x80f066, 0x03 },
+	{ 0x80f067, 0x01 },
+	{ 0x80f06f, 0xe0 },
+	{ 0x80f070, 0x03 },
+	{ 0x80f072, 0x0f },
+	{ 0x80f073, 0x03 },
+	{ 0x80f078, 0x00 },
+	{ 0x80f087, 0x00 },
+	{ 0x80f09b, 0x3f },
+	{ 0x80f09c, 0x00 },
+	{ 0x80f09d, 0x20 },
+	{ 0x80f09e, 0x00 },
+	{ 0x80f09f, 0x0c },
+	{ 0x80f0a0, 0x00 },
+	{ 0x80f130, 0x04 },
+	{ 0x80f132, 0x04 },
+	{ 0x80f144, 0x1a },
+	{ 0x80f146, 0x00 },
+	{ 0x80f14a, 0x01 },
+	{ 0x80f14c, 0x00 },
+	{ 0x80f14d, 0x00 },
+	{ 0x80f14f, 0x04 },
+	{ 0x80f158, 0x7f },
+	{ 0x80f15a, 0x00 },
+	{ 0x80f15b, 0x08 },
+	{ 0x80f15d, 0x03 },
+	{ 0x80f15e, 0x05 },
+	{ 0x80f163, 0x05 },
+	{ 0x80f166, 0x01 },
+	{ 0x80f167, 0x40 },
+	{ 0x80f168, 0x0f },
+	{ 0x80f17a, 0x00 },
+	{ 0x80f17b, 0x00 },
+	{ 0x80f183, 0x01 },
+	{ 0x80f19d, 0x40 },
+	{ 0x80f1bc, 0x36 },
+	{ 0x80f1bd, 0x00 },
+	{ 0x80f1cb, 0xa0 },
+	{ 0x80f1cc, 0x01 },
+	{ 0x80f204, 0x10 },
+	{ 0x80f214, 0x00 },
+	{ 0x80f40e, 0x0a },
+	{ 0x80f40f, 0x40 },
+	{ 0x80f410, 0x08 },
+	{ 0x80f55f, 0x0a },
+	{ 0x80f561, 0x15 },
+	{ 0x80f562, 0x20 },
+	{ 0x80f5df, 0xfb },
+	{ 0x80f5e0, 0x00 },
+	{ 0x80f5e3, 0x09 },
+	{ 0x80f5e4, 0x01 },
+	{ 0x80f5e5, 0x01 },
+	{ 0x80f5f8, 0x01 },
+	{ 0x80f5fd, 0x01 },
+	{ 0x80f600, 0x05 },
+	{ 0x80f601, 0x08 },
+	{ 0x80f602, 0x0b },
+	{ 0x80f603, 0x0e },
+	{ 0x80f604, 0x11 },
+	{ 0x80f605, 0x14 },
+	{ 0x80f606, 0x17 },
+	{ 0x80f607, 0x1f },
+	{ 0x80f60e, 0x00 },
+	{ 0x80f60f, 0x04 },
+	{ 0x80f610, 0x32 },
+	{ 0x80f611, 0x10 },
+	{ 0x80f707, 0xfc },
+	{ 0x80f708, 0x00 },
+	{ 0x80f709, 0x37 },
+	{ 0x80f70a, 0x00 },
+	{ 0x80f78b, 0x01 },
+	{ 0x80f80f, 0x40 },
+	{ 0x80f810, 0x54 },
+	{ 0x80f811, 0x5a },
+	{ 0x80f905, 0x01 },
+	{ 0x80fb06, 0x03 },
+	{ 0x80fd8b, 0x00 },
+};
+
+/* Infineon TUA 9001 tuner init
+   AF9033_TUNER_TUA9001    = 0x27 */
+static const struct reg_val tuner_init_tua9001[] = {
+	{ 0x800046, 0x27 },
+	{ 0x800057, 0x00 },
+	{ 0x800058, 0x01 },
+	{ 0x80005f, 0x00 },
+	{ 0x800060, 0x00 },
+	{ 0x80006d, 0x00 },
+	{ 0x800071, 0x05 },
+	{ 0x800072, 0x02 },
+	{ 0x800074, 0x01 },
+	{ 0x800075, 0x03 },
+	{ 0x800076, 0x02 },
+	{ 0x800077, 0x00 },
+	{ 0x800078, 0x01 },
+	{ 0x800079, 0x00 },
+	{ 0x80007a, 0x7e },
+	{ 0x80007b, 0x3e },
+	{ 0x800093, 0x00 },
+	{ 0x800094, 0x01 },
+	{ 0x800095, 0x02 },
+	{ 0x800096, 0x01 },
+	{ 0x800098, 0x0a },
+	{ 0x80009b, 0x05 },
+	{ 0x80009c, 0x80 },
+	{ 0x8000b3, 0x00 },
+	{ 0x8000c1, 0x01 },
+	{ 0x8000c2, 0x00 },
+	{ 0x80f007, 0x00 },
+	{ 0x80f01f, 0x82 },
+	{ 0x80f020, 0x00 },
+	{ 0x80f029, 0x82 },
+	{ 0x80f02a, 0x00 },
+	{ 0x80f047, 0x00 },
+	{ 0x80f054, 0x00 },
+	{ 0x80f055, 0x00 },
+	{ 0x80f077, 0x01 },
+	{ 0x80f1e6, 0x00 },
+};
+
+#endif /* AF9033_PRIV_H */
+