[media] common: move media/common/tuners to media/tuners

Move the tuners one level up, as the "common" directory will be used
by drivers that are shared between more than one driver.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 928 insertions, 0 deletions

diff --git a/drivers/media/tuners/mxl5007t.c b/drivers/media/tuners/mxl5007t.c
new file mode 100644
index 000000000000..69e453ef0a1a
--- /dev/null
+++ b/drivers/media/tuners/mxl5007t.c
@@ -0,0 +1,928 @@
+/*
+ *  mxl5007t.c - driver for the MaxLinear MxL5007T silicon tuner
+ *
+ *  Copyright (C) 2008, 2009 Michael Krufky <mkrufky@linuxtv.org>
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/i2c.h>
+#include <linux/types.h>
+#include <linux/videodev2.h>
+#include "tuner-i2c.h"
+#include "mxl5007t.h"
+
+static DEFINE_MUTEX(mxl5007t_list_mutex);
+static LIST_HEAD(hybrid_tuner_instance_list);
+
+static int mxl5007t_debug;
+module_param_named(debug, mxl5007t_debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debug level");
+
+/* ------------------------------------------------------------------------- */
+
+#define mxl_printk(kern, fmt, arg...) \
+	printk(kern "%s: " fmt "\n", __func__, ##arg)
+
+#define mxl_err(fmt, arg...) \
+	mxl_printk(KERN_ERR, "%d: " fmt, __LINE__, ##arg)
+
+#define mxl_warn(fmt, arg...) \
+	mxl_printk(KERN_WARNING, fmt, ##arg)
+
+#define mxl_info(fmt, arg...) \
+	mxl_printk(KERN_INFO, fmt, ##arg)
+
+#define mxl_debug(fmt, arg...)				\
+({							\
+	if (mxl5007t_debug)				\
+		mxl_printk(KERN_DEBUG, fmt, ##arg);	\
+})
+
+#define mxl_fail(ret)							\
+({									\
+	int __ret;							\
+	__ret = (ret < 0);						\
+	if (__ret)							\
+		mxl_printk(KERN_ERR, "error %d on line %d",		\
+			   ret, __LINE__);				\
+	__ret;								\
+})
+
+/* ------------------------------------------------------------------------- */
+
+#define MHz 1000000
+
+enum mxl5007t_mode {
+	MxL_MODE_ISDBT     =    0,
+	MxL_MODE_DVBT      =    1,
+	MxL_MODE_ATSC      =    2,
+	MxL_MODE_CABLE     = 0x10,
+};
+
+enum mxl5007t_chip_version {
+	MxL_UNKNOWN_ID     = 0x00,
+	MxL_5007_V1_F1     = 0x11,
+	MxL_5007_V1_F2     = 0x12,
+	MxL_5007_V4        = 0x14,
+	MxL_5007_V2_100_F1 = 0x21,
+	MxL_5007_V2_100_F2 = 0x22,
+	MxL_5007_V2_200_F1 = 0x23,
+	MxL_5007_V2_200_F2 = 0x24,
+};
+
+struct reg_pair_t {
+	u8 reg;
+	u8 val;
+};
+
+/* ------------------------------------------------------------------------- */
+
+static struct reg_pair_t init_tab[] = {
+	{ 0x02, 0x06 },
+	{ 0x03, 0x48 },
+	{ 0x05, 0x04 },
+	{ 0x06, 0x10 },
+	{ 0x2e, 0x15 }, /* OVERRIDE */
+	{ 0x30, 0x10 }, /* OVERRIDE */
+	{ 0x45, 0x58 }, /* OVERRIDE */
+	{ 0x48, 0x19 }, /* OVERRIDE */
+	{ 0x52, 0x03 }, /* OVERRIDE */
+	{ 0x53, 0x44 }, /* OVERRIDE */
+	{ 0x6a, 0x4b }, /* OVERRIDE */
+	{ 0x76, 0x00 }, /* OVERRIDE */
+	{ 0x78, 0x18 }, /* OVERRIDE */
+	{ 0x7a, 0x17 }, /* OVERRIDE */
+	{ 0x85, 0x06 }, /* OVERRIDE */
+	{ 0x01, 0x01 }, /* TOP_MASTER_ENABLE */
+	{ 0, 0 }
+};
+
+static struct reg_pair_t init_tab_cable[] = {
+	{ 0x02, 0x06 },
+	{ 0x03, 0x48 },
+	{ 0x05, 0x04 },
+	{ 0x06, 0x10 },
+	{ 0x09, 0x3f },
+	{ 0x0a, 0x3f },
+	{ 0x0b, 0x3f },
+	{ 0x2e, 0x15 }, /* OVERRIDE */
+	{ 0x30, 0x10 }, /* OVERRIDE */
+	{ 0x45, 0x58 }, /* OVERRIDE */
+	{ 0x48, 0x19 }, /* OVERRIDE */
+	{ 0x52, 0x03 }, /* OVERRIDE */
+	{ 0x53, 0x44 }, /* OVERRIDE */
+	{ 0x6a, 0x4b }, /* OVERRIDE */
+	{ 0x76, 0x00 }, /* OVERRIDE */
+	{ 0x78, 0x18 }, /* OVERRIDE */
+	{ 0x7a, 0x17 }, /* OVERRIDE */
+	{ 0x85, 0x06 }, /* OVERRIDE */
+	{ 0x01, 0x01 }, /* TOP_MASTER_ENABLE */
+	{ 0, 0 }
+};
+
+/* ------------------------------------------------------------------------- */
+
+static struct reg_pair_t reg_pair_rftune[] = {
+	{ 0x0f, 0x00 }, /* abort tune */
+	{ 0x0c, 0x15 },
+	{ 0x0d, 0x40 },
+	{ 0x0e, 0x0e },
+	{ 0x1f, 0x87 }, /* OVERRIDE */
+	{ 0x20, 0x1f }, /* OVERRIDE */
+	{ 0x21, 0x87 }, /* OVERRIDE */
+	{ 0x22, 0x1f }, /* OVERRIDE */
+	{ 0x80, 0x01 }, /* freq dependent */
+	{ 0x0f, 0x01 }, /* start tune */
+	{ 0, 0 }
+};
+
+/* ------------------------------------------------------------------------- */
+
+struct mxl5007t_state {
+	struct list_head hybrid_tuner_instance_list;
+	struct tuner_i2c_props i2c_props;
+
+	struct mutex lock;
+
+	struct mxl5007t_config *config;
+
+	enum mxl5007t_chip_version chip_id;
+
+	struct reg_pair_t tab_init[ARRAY_SIZE(init_tab)];
+	struct reg_pair_t tab_init_cable[ARRAY_SIZE(init_tab_cable)];
+	struct reg_pair_t tab_rftune[ARRAY_SIZE(reg_pair_rftune)];
+
+	enum mxl5007t_if_freq if_freq;
+
+	u32 frequency;
+	u32 bandwidth;
+};
+
+/* ------------------------------------------------------------------------- */
+
+/* called by _init and _rftun to manipulate the register arrays */
+
+static void set_reg_bits(struct reg_pair_t *reg_pair, u8 reg, u8 mask, u8 val)
+{
+	unsigned int i = 0;
+
+	while (reg_pair[i].reg || reg_pair[i].val) {
+		if (reg_pair[i].reg == reg) {
+			reg_pair[i].val &= ~mask;
+			reg_pair[i].val |= val;
+		}
+		i++;
+
+	}
+	return;
+}
+
+static void copy_reg_bits(struct reg_pair_t *reg_pair1,
+			  struct reg_pair_t *reg_pair2)
+{
+	unsigned int i, j;
+
+	i = j = 0;
+
+	while (reg_pair1[i].reg || reg_pair1[i].val) {
+		while (reg_pair2[j].reg || reg_pair2[j].val) {
+			if (reg_pair1[i].reg != reg_pair2[j].reg) {
+				j++;
+				continue;
+			}
+			reg_pair2[j].val = reg_pair1[i].val;
+			break;
+		}
+		i++;
+	}
+	return;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static void mxl5007t_set_mode_bits(struct mxl5007t_state *state,
+				   enum mxl5007t_mode mode,
+				   s32 if_diff_out_level)
+{
+	switch (mode) {
+	case MxL_MODE_ATSC:
+		set_reg_bits(state->tab_init, 0x06, 0x1f, 0x12);
+		break;
+	case MxL_MODE_DVBT:
+		set_reg_bits(state->tab_init, 0x06, 0x1f, 0x11);
+		break;
+	case MxL_MODE_ISDBT:
+		set_reg_bits(state->tab_init, 0x06, 0x1f, 0x10);
+		break;
+	case MxL_MODE_CABLE:
+		set_reg_bits(state->tab_init_cable, 0x09, 0xff, 0xc1);
+		set_reg_bits(state->tab_init_cable, 0x0a, 0xff,
+			     8 - if_diff_out_level);
+		set_reg_bits(state->tab_init_cable, 0x0b, 0xff, 0x17);
+		break;
+	default:
+		mxl_fail(-EINVAL);
+	}
+	return;
+}
+
+static void mxl5007t_set_if_freq_bits(struct mxl5007t_state *state,
+				      enum mxl5007t_if_freq if_freq,
+				      int invert_if)
+{
+	u8 val;
+
+	switch (if_freq) {
+	case MxL_IF_4_MHZ:
+		val = 0x00;
+		break;
+	case MxL_IF_4_5_MHZ:
+		val = 0x02;
+		break;
+	case MxL_IF_4_57_MHZ:
+		val = 0x03;
+		break;
+	case MxL_IF_5_MHZ:
+		val = 0x04;
+		break;
+	case MxL_IF_5_38_MHZ:
+		val = 0x05;
+		break;
+	case MxL_IF_6_MHZ:
+		val = 0x06;
+		break;
+	case MxL_IF_6_28_MHZ:
+		val = 0x07;
+		break;
+	case MxL_IF_9_1915_MHZ:
+		val = 0x08;
+		break;
+	case MxL_IF_35_25_MHZ:
+		val = 0x09;
+		break;
+	case MxL_IF_36_15_MHZ:
+		val = 0x0a;
+		break;
+	case MxL_IF_44_MHZ:
+		val = 0x0b;
+		break;
+	default:
+		mxl_fail(-EINVAL);
+		return;
+	}
+	set_reg_bits(state->tab_init, 0x02, 0x0f, val);
+
+	/* set inverted IF or normal IF */
+	set_reg_bits(state->tab_init, 0x02, 0x10, invert_if ? 0x10 : 0x00);
+
+	state->if_freq = if_freq;
+
+	return;
+}
+
+static void mxl5007t_set_xtal_freq_bits(struct mxl5007t_state *state,
+					enum mxl5007t_xtal_freq xtal_freq)
+{
+	switch (xtal_freq) {
+	case MxL_XTAL_16_MHZ:
+		/* select xtal freq & ref freq */
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0x00);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x00);
+		break;
+	case MxL_XTAL_20_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0x10);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x01);
+		break;
+	case MxL_XTAL_20_25_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0x20);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x02);
+		break;
+	case MxL_XTAL_20_48_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0x30);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x03);
+		break;
+	case MxL_XTAL_24_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0x40);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x04);
+		break;
+	case MxL_XTAL_25_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0x50);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x05);
+		break;
+	case MxL_XTAL_25_14_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0x60);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x06);
+		break;
+	case MxL_XTAL_27_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0x70);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x07);
+		break;
+	case MxL_XTAL_28_8_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0x80);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x08);
+		break;
+	case MxL_XTAL_32_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0x90);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x09);
+		break;
+	case MxL_XTAL_40_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0xa0);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0a);
+		break;
+	case MxL_XTAL_44_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0xb0);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0b);
+		break;
+	case MxL_XTAL_48_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0xc0);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0c);
+		break;
+	case MxL_XTAL_49_3811_MHZ:
+		set_reg_bits(state->tab_init, 0x03, 0xf0, 0xd0);
+		set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0d);
+		break;
+	default:
+		mxl_fail(-EINVAL);
+		return;
+	}
+
+	return;
+}
+
+static struct reg_pair_t *mxl5007t_calc_init_regs(struct mxl5007t_state *state,
+						  enum mxl5007t_mode mode)
+{
+	struct mxl5007t_config *cfg = state->config;
+
+	memcpy(&state->tab_init, &init_tab, sizeof(init_tab));
+	memcpy(&state->tab_init_cable, &init_tab_cable, sizeof(init_tab_cable));
+
+	mxl5007t_set_mode_bits(state, mode, cfg->if_diff_out_level);
+	mxl5007t_set_if_freq_bits(state, cfg->if_freq_hz, cfg->invert_if);
+	mxl5007t_set_xtal_freq_bits(state, cfg->xtal_freq_hz);
+
+	set_reg_bits(state->tab_init, 0x04, 0x01, cfg->loop_thru_enable);
+	set_reg_bits(state->tab_init, 0x03, 0x08, cfg->clk_out_enable << 3);
+	set_reg_bits(state->tab_init, 0x03, 0x07, cfg->clk_out_amp);
+
+	if (mode >= MxL_MODE_CABLE) {
+		copy_reg_bits(state->tab_init, state->tab_init_cable);
+		return state->tab_init_cable;
+	} else
+		return state->tab_init;
+}
+
+/* ------------------------------------------------------------------------- */
+
+enum mxl5007t_bw_mhz {
+	MxL_BW_6MHz = 6,
+	MxL_BW_7MHz = 7,
+	MxL_BW_8MHz = 8,
+};
+
+static void mxl5007t_set_bw_bits(struct mxl5007t_state *state,
+				 enum mxl5007t_bw_mhz bw)
+{
+	u8 val;
+
+	switch (bw) {
+	case MxL_BW_6MHz:
+		val = 0x15; /* set DIG_MODEINDEX, DIG_MODEINDEX_A,
+			     * and DIG_MODEINDEX_CSF */
+		break;
+	case MxL_BW_7MHz:
+		val = 0x2a;
+		break;
+	case MxL_BW_8MHz:
+		val = 0x3f;
+		break;
+	default:
+		mxl_fail(-EINVAL);
+		return;
+	}
+	set_reg_bits(state->tab_rftune, 0x0c, 0x3f, val);
+
+	return;
+}
+
+static struct
+reg_pair_t *mxl5007t_calc_rf_tune_regs(struct mxl5007t_state *state,
+				       u32 rf_freq, enum mxl5007t_bw_mhz bw)
+{
+	u32 dig_rf_freq = 0;
+	u32 temp;
+	u32 frac_divider = 1000000;
+	unsigned int i;
+
+	memcpy(&state->tab_rftune, &reg_pair_rftune, sizeof(reg_pair_rftune));
+
+	mxl5007t_set_bw_bits(state, bw);
+
+	/* Convert RF frequency into 16 bits =>
+	 * 10 bit integer (MHz) + 6 bit fraction */
+	dig_rf_freq = rf_freq / MHz;
+
+	temp = rf_freq % MHz;
+
+	for (i = 0; i < 6; i++) {
+		dig_rf_freq <<= 1;
+		frac_divider /= 2;
+		if (temp > frac_divider) {
+			temp -= frac_divider;
+			dig_rf_freq++;
+		}
+	}
+
+	/* add to have shift center point by 7.8124 kHz */
+	if (temp > 7812)
+		dig_rf_freq++;
+
+	set_reg_bits(state->tab_rftune, 0x0d, 0xff, (u8) dig_rf_freq);
+	set_reg_bits(state->tab_rftune, 0x0e, 0xff, (u8) (dig_rf_freq >> 8));
+
+	if (rf_freq >= 333000000)
+		set_reg_bits(state->tab_rftune, 0x80, 0x40, 0x40);
+
+	return state->tab_rftune;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int mxl5007t_write_reg(struct mxl5007t_state *state, u8 reg, u8 val)
+{
+	u8 buf[] = { reg, val };
+	struct i2c_msg msg = { .addr = state->i2c_props.addr, .flags = 0,
+			       .buf = buf, .len = 2 };
+	int ret;
+
+	ret = i2c_transfer(state->i2c_props.adap, &msg, 1);
+	if (ret != 1) {
+		mxl_err("failed!");
+		return -EREMOTEIO;
+	}
+	return 0;
+}
+
+static int mxl5007t_write_regs(struct mxl5007t_state *state,
+			       struct reg_pair_t *reg_pair)
+{
+	unsigned int i = 0;
+	int ret = 0;
+
+	while ((ret == 0) && (reg_pair[i].reg || reg_pair[i].val)) {
+		ret = mxl5007t_write_reg(state,
+					 reg_pair[i].reg, reg_pair[i].val);
+		i++;
+	}
+	return ret;
+}
+
+static int mxl5007t_read_reg(struct mxl5007t_state *state, u8 reg, u8 *val)
+{
+	u8 buf[2] = { 0xfb, reg };
+	struct i2c_msg msg[] = {
+		{ .addr = state->i2c_props.addr, .flags = 0,
+		  .buf = buf, .len = 2 },
+		{ .addr = state->i2c_props.addr, .flags = I2C_M_RD,
+		  .buf = val, .len = 1 },
+	};
+	int ret;
+
+	ret = i2c_transfer(state->i2c_props.adap, msg, 2);
+	if (ret != 2) {
+		mxl_err("failed!");
+		return -EREMOTEIO;
+	}
+	return 0;
+}
+
+static int mxl5007t_soft_reset(struct mxl5007t_state *state)
+{
+	u8 d = 0xff;
+	struct i2c_msg msg = {
+		.addr = state->i2c_props.addr, .flags = 0,
+		.buf = &d, .len = 1
+	};
+	int ret = i2c_transfer(state->i2c_props.adap, &msg, 1);
+
+	if (ret != 1) {
+		mxl_err("failed!");
+		return -EREMOTEIO;
+	}
+	return 0;
+}
+
+static int mxl5007t_tuner_init(struct mxl5007t_state *state,
+			       enum mxl5007t_mode mode)
+{
+	struct reg_pair_t *init_regs;
+	int ret;
+
+	ret = mxl5007t_soft_reset(state);
+	if (mxl_fail(ret))
+		goto fail;
+
+	/* calculate initialization reg array */
+	init_regs = mxl5007t_calc_init_regs(state, mode);
+
+	ret = mxl5007t_write_regs(state, init_regs);
+	if (mxl_fail(ret))
+		goto fail;
+	mdelay(1);
+fail:
+	return ret;
+}
+
+static int mxl5007t_tuner_rf_tune(struct mxl5007t_state *state, u32 rf_freq_hz,
+				  enum mxl5007t_bw_mhz bw)
+{
+	struct reg_pair_t *rf_tune_regs;
+	int ret;
+
+	/* calculate channel change reg array */
+	rf_tune_regs = mxl5007t_calc_rf_tune_regs(state, rf_freq_hz, bw);
+
+	ret = mxl5007t_write_regs(state, rf_tune_regs);
+	if (mxl_fail(ret))
+		goto fail;
+	msleep(3);
+fail:
+	return ret;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int mxl5007t_synth_lock_status(struct mxl5007t_state *state,
+				      int *rf_locked, int *ref_locked)
+{
+	u8 d;
+	int ret;
+
+	*rf_locked = 0;
+	*ref_locked = 0;
+
+	ret = mxl5007t_read_reg(state, 0xd8, &d);
+	if (mxl_fail(ret))
+		goto fail;
+
+	if ((d & 0x0c) == 0x0c)
+		*rf_locked = 1;
+
+	if ((d & 0x03) == 0x03)
+		*ref_locked = 1;
+fail:
+	return ret;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int mxl5007t_get_status(struct dvb_frontend *fe, u32 *status)
+{
+	struct mxl5007t_state *state = fe->tuner_priv;
+	int rf_locked, ref_locked, ret;
+
+	*status = 0;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	ret = mxl5007t_synth_lock_status(state, &rf_locked, &ref_locked);
+	if (mxl_fail(ret))
+		goto fail;
+	mxl_debug("%s%s", rf_locked ? "rf locked " : "",
+		  ref_locked ? "ref locked" : "");
+
+	if ((rf_locked) || (ref_locked))
+		*status |= TUNER_STATUS_LOCKED;
+fail:
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	return ret;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int mxl5007t_set_params(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	u32 delsys = c->delivery_system;
+	struct mxl5007t_state *state = fe->tuner_priv;
+	enum mxl5007t_bw_mhz bw;
+	enum mxl5007t_mode mode;
+	int ret;
+	u32 freq = c->frequency;
+
+	switch (delsys) {
+	case SYS_ATSC:
+		mode = MxL_MODE_ATSC;
+		bw = MxL_BW_6MHz;
+		break;
+	case SYS_DVBC_ANNEX_B:
+		mode = MxL_MODE_CABLE;
+		bw = MxL_BW_6MHz;
+		break;
+	case SYS_DVBT:
+	case SYS_DVBT2:
+		mode = MxL_MODE_DVBT;
+		switch (c->bandwidth_hz) {
+		case 6000000:
+			bw = MxL_BW_6MHz;
+			break;
+		case 7000000:
+			bw = MxL_BW_7MHz;
+			break;
+		case 8000000:
+			bw = MxL_BW_8MHz;
+			break;
+		default:
+			return -EINVAL;
+		}
+		break;
+	default:
+		mxl_err("modulation type not supported!");
+		return -EINVAL;
+	}
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	mutex_lock(&state->lock);
+
+	ret = mxl5007t_tuner_init(state, mode);
+	if (mxl_fail(ret))
+		goto fail;
+
+	ret = mxl5007t_tuner_rf_tune(state, freq, bw);
+	if (mxl_fail(ret))
+		goto fail;
+
+	state->frequency = freq;
+	state->bandwidth = c->bandwidth_hz;
+fail:
+	mutex_unlock(&state->lock);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	return ret;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int mxl5007t_init(struct dvb_frontend *fe)
+{
+	struct mxl5007t_state *state = fe->tuner_priv;
+	int ret;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	/* wake from standby */
+	ret = mxl5007t_write_reg(state, 0x01, 0x01);
+	mxl_fail(ret);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	return ret;
+}
+
+static int mxl5007t_sleep(struct dvb_frontend *fe)
+{
+	struct mxl5007t_state *state = fe->tuner_priv;
+	int ret;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	/* enter standby mode */
+	ret = mxl5007t_write_reg(state, 0x01, 0x00);
+	mxl_fail(ret);
+	ret = mxl5007t_write_reg(state, 0x0f, 0x00);
+	mxl_fail(ret);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	return ret;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int mxl5007t_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct mxl5007t_state *state = fe->tuner_priv;
+	*frequency = state->frequency;
+	return 0;
+}
+
+static int mxl5007t_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+	struct mxl5007t_state *state = fe->tuner_priv;
+	*bandwidth = state->bandwidth;
+	return 0;
+}
+
+static int mxl5007t_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct mxl5007t_state *state = fe->tuner_priv;
+
+	*frequency = 0;
+
+	switch (state->if_freq) {
+	case MxL_IF_4_MHZ:
+		*frequency = 4000000;
+		break;
+	case MxL_IF_4_5_MHZ:
+		*frequency = 4500000;
+		break;
+	case MxL_IF_4_57_MHZ:
+		*frequency = 4570000;
+		break;
+	case MxL_IF_5_MHZ:
+		*frequency = 5000000;
+		break;
+	case MxL_IF_5_38_MHZ:
+		*frequency = 5380000;
+		break;
+	case MxL_IF_6_MHZ:
+		*frequency = 6000000;
+		break;
+	case MxL_IF_6_28_MHZ:
+		*frequency = 6280000;
+		break;
+	case MxL_IF_9_1915_MHZ:
+		*frequency = 9191500;
+		break;
+	case MxL_IF_35_25_MHZ:
+		*frequency = 35250000;
+		break;
+	case MxL_IF_36_15_MHZ:
+		*frequency = 36150000;
+		break;
+	case MxL_IF_44_MHZ:
+		*frequency = 44000000;
+		break;
+	}
+	return 0;
+}
+
+static int mxl5007t_release(struct dvb_frontend *fe)
+{
+	struct mxl5007t_state *state = fe->tuner_priv;
+
+	mutex_lock(&mxl5007t_list_mutex);
+
+	if (state)
+		hybrid_tuner_release_state(state);
+
+	mutex_unlock(&mxl5007t_list_mutex);
+
+	fe->tuner_priv = NULL;
+
+	return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static struct dvb_tuner_ops mxl5007t_tuner_ops = {
+	.info = {
+		.name = "MaxLinear MxL5007T",
+	},
+	.init              = mxl5007t_init,
+	.sleep             = mxl5007t_sleep,
+	.set_params        = mxl5007t_set_params,
+	.get_status        = mxl5007t_get_status,
+	.get_frequency     = mxl5007t_get_frequency,
+	.get_bandwidth     = mxl5007t_get_bandwidth,
+	.release           = mxl5007t_release,
+	.get_if_frequency  = mxl5007t_get_if_frequency,
+};
+
+static int mxl5007t_get_chip_id(struct mxl5007t_state *state)
+{
+	char *name;
+	int ret;
+	u8 id;
+
+	ret = mxl5007t_read_reg(state, 0xd9, &id);
+	if (mxl_fail(ret))
+		goto fail;
+
+	switch (id) {
+	case MxL_5007_V1_F1:
+		name = "MxL5007.v1.f1";
+		break;
+	case MxL_5007_V1_F2:
+		name = "MxL5007.v1.f2";
+		break;
+	case MxL_5007_V2_100_F1:
+		name = "MxL5007.v2.100.f1";
+		break;
+	case MxL_5007_V2_100_F2:
+		name = "MxL5007.v2.100.f2";
+		break;
+	case MxL_5007_V2_200_F1:
+		name = "MxL5007.v2.200.f1";
+		break;
+	case MxL_5007_V2_200_F2:
+		name = "MxL5007.v2.200.f2";
+		break;
+	case MxL_5007_V4:
+		name = "MxL5007T.v4";
+		break;
+	default:
+		name = "MxL5007T";
+		printk(KERN_WARNING "%s: unknown rev (%02x)\n", __func__, id);
+		id = MxL_UNKNOWN_ID;
+	}
+	state->chip_id = id;
+	mxl_info("%s detected @ %d-%04x", name,
+		 i2c_adapter_id(state->i2c_props.adap),
+		 state->i2c_props.addr);
+	return 0;
+fail:
+	mxl_warn("unable to identify device @ %d-%04x",
+		 i2c_adapter_id(state->i2c_props.adap),
+		 state->i2c_props.addr);
+
+	state->chip_id = MxL_UNKNOWN_ID;
+	return ret;
+}
+
+struct dvb_frontend *mxl5007t_attach(struct dvb_frontend *fe,
+				     struct i2c_adapter *i2c, u8 addr,
+				     struct mxl5007t_config *cfg)
+{
+	struct mxl5007t_state *state = NULL;
+	int instance, ret;
+
+	mutex_lock(&mxl5007t_list_mutex);
+	instance = hybrid_tuner_request_state(struct mxl5007t_state, state,
+					      hybrid_tuner_instance_list,
+					      i2c, addr, "mxl5007t");
+	switch (instance) {
+	case 0:
+		goto fail;
+	case 1:
+		/* new tuner instance */
+		state->config = cfg;
+
+		mutex_init(&state->lock);
+
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 1);
+
+		ret = mxl5007t_get_chip_id(state);
+
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 0);
+
+		/* check return value of mxl5007t_get_chip_id */
+		if (mxl_fail(ret))
+			goto fail;
+		break;
+	default:
+		/* existing tuner instance */
+		break;
+	}
+	fe->tuner_priv = state;
+	mutex_unlock(&mxl5007t_list_mutex);
+
+	memcpy(&fe->ops.tuner_ops, &mxl5007t_tuner_ops,
+	       sizeof(struct dvb_tuner_ops));
+
+	return fe;
+fail:
+	mutex_unlock(&mxl5007t_list_mutex);
+
+	mxl5007t_release(fe);
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(mxl5007t_attach);
+MODULE_DESCRIPTION("MaxLinear MxL5007T Silicon IC tuner driver");
+MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.2");
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */