V4L/DVB(7767): Move tuners to common/tuners

There were several issues in the past, caused by the hybrid tuner design, since
now, the same tuner can be used by drivers/media/dvb and drivers/media/video.

Kconfig items were rearranged, to split V4L/DVB core from their drivers.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 852 insertions, 0 deletions

diff --git a/drivers/media/common/tuners/tda827x.c b/drivers/media/common/tuners/tda827x.c
new file mode 100644
index 000000000000..d30d2c9094d9
--- /dev/null
+++ b/drivers/media/common/tuners/tda827x.c
@@ -0,0 +1,852 @@
+/*
+ *
+ * (c) 2005 Hartmut Hackmann
+ * (c) 2007 Michael Krufky
+ *
+ *  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/module.h>
+#include <asm/types.h>
+#include <linux/dvb/frontend.h>
+#include <linux/videodev2.h>
+
+#include "tda827x.h"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+#define dprintk(args...) \
+	do {					    \
+		if (debug) printk(KERN_DEBUG "tda827x: " args); \
+	} while (0)
+
+struct tda827x_priv {
+	int i2c_addr;
+	struct i2c_adapter *i2c_adap;
+	struct tda827x_config *cfg;
+
+	unsigned int sgIF;
+	unsigned char lpsel;
+
+	u32 frequency;
+	u32 bandwidth;
+};
+
+static void tda827x_set_std(struct dvb_frontend *fe,
+			    struct analog_parameters *params)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	char *mode;
+
+	priv->lpsel = 0;
+	if (params->std & V4L2_STD_MN) {
+		priv->sgIF = 92;
+		priv->lpsel = 1;
+		mode = "MN";
+	} else if (params->std & V4L2_STD_B) {
+		priv->sgIF = 108;
+		mode = "B";
+	} else if (params->std & V4L2_STD_GH) {
+		priv->sgIF = 124;
+		mode = "GH";
+	} else if (params->std & V4L2_STD_PAL_I) {
+		priv->sgIF = 124;
+		mode = "I";
+	} else if (params->std & V4L2_STD_DK) {
+		priv->sgIF = 124;
+		mode = "DK";
+	} else if (params->std & V4L2_STD_SECAM_L) {
+		priv->sgIF = 124;
+		mode = "L";
+	} else if (params->std & V4L2_STD_SECAM_LC) {
+		priv->sgIF = 20;
+		mode = "LC";
+	} else {
+		priv->sgIF = 124;
+		mode = "xx";
+	}
+
+	if (params->mode == V4L2_TUNER_RADIO)
+		priv->sgIF = 88; /* if frequency is 5.5 MHz */
+
+	dprintk("setting tda827x to system %s\n", mode);
+}
+
+
+/* ------------------------------------------------------------------ */
+
+struct tda827x_data {
+	u32 lomax;
+	u8  spd;
+	u8  bs;
+	u8  bp;
+	u8  cp;
+	u8  gc3;
+	u8 div1p5;
+};
+
+static const struct tda827x_data tda827x_table[] = {
+	{ .lomax =  62000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
+	{ .lomax =  66000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
+	{ .lomax =  76000000, .spd = 3, .bs = 1, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
+	{ .lomax =  84000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
+	{ .lomax =  93000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax =  98000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 109000000, .spd = 3, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 123000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
+	{ .lomax = 133000000, .spd = 2, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
+	{ .lomax = 151000000, .spd = 2, .bs = 1, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 154000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 181000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 0, .div1p5 = 0},
+	{ .lomax = 185000000, .spd = 2, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 217000000, .spd = 2, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 244000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
+	{ .lomax = 265000000, .spd = 1, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
+	{ .lomax = 302000000, .spd = 1, .bs = 1, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 324000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 370000000, .spd = 1, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 454000000, .spd = 1, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 493000000, .spd = 0, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
+	{ .lomax = 530000000, .spd = 0, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
+	{ .lomax = 554000000, .spd = 0, .bs = 1, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
+	{ .lomax = 604000000, .spd = 0, .bs = 1, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
+	{ .lomax = 696000000, .spd = 0, .bs = 2, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
+	{ .lomax = 740000000, .spd = 0, .bs = 2, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
+	{ .lomax = 820000000, .spd = 0, .bs = 3, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
+	{ .lomax = 865000000, .spd = 0, .bs = 3, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
+	{ .lomax =         0, .spd = 0, .bs = 0, .bp = 0, .cp = 0, .gc3 = 0, .div1p5 = 0}
+};
+
+static int tda827xo_set_params(struct dvb_frontend *fe,
+			       struct dvb_frontend_parameters *params)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	u8 buf[14];
+
+	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
+			       .buf = buf, .len = sizeof(buf) };
+	int i, tuner_freq, if_freq;
+	u32 N;
+
+	dprintk("%s:\n", __func__);
+	switch (params->u.ofdm.bandwidth) {
+	case BANDWIDTH_6_MHZ:
+		if_freq = 4000000;
+		break;
+	case BANDWIDTH_7_MHZ:
+		if_freq = 4500000;
+		break;
+	default:		   /* 8 MHz or Auto */
+		if_freq = 5000000;
+		break;
+	}
+	tuner_freq = params->frequency + if_freq;
+
+	i = 0;
+	while (tda827x_table[i].lomax < tuner_freq) {
+		if (tda827x_table[i + 1].lomax == 0)
+			break;
+		i++;
+	}
+
+	N = ((tuner_freq + 125000) / 250000) << (tda827x_table[i].spd + 2);
+	buf[0] = 0;
+	buf[1] = (N>>8) | 0x40;
+	buf[2] = N & 0xff;
+	buf[3] = 0;
+	buf[4] = 0x52;
+	buf[5] = (tda827x_table[i].spd << 6) + (tda827x_table[i].div1p5 << 5) +
+				(tda827x_table[i].bs << 3) +
+				tda827x_table[i].bp;
+	buf[6] = (tda827x_table[i].gc3 << 4) + 0x8f;
+	buf[7] = 0xbf;
+	buf[8] = 0x2a;
+	buf[9] = 0x05;
+	buf[10] = 0xff;
+	buf[11] = 0x00;
+	buf[12] = 0x00;
+	buf[13] = 0x40;
+
+	msg.len = 14;
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) {
+		printk("%s: could not write to tuner at addr: 0x%02x\n",
+		       __func__, priv->i2c_addr << 1);
+		return -EIO;
+	}
+	msleep(500);
+	/* correct CP value */
+	buf[0] = 0x30;
+	buf[1] = 0x50 + tda827x_table[i].cp;
+	msg.len = 2;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	priv->frequency = tuner_freq - if_freq; // FIXME
+	priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
+
+	return 0;
+}
+
+static int tda827xo_sleep(struct dvb_frontend *fe)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	static u8 buf[] = { 0x30, 0xd0 };
+	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
+			       .buf = buf, .len = sizeof(buf) };
+
+	dprintk("%s:\n", __func__);
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	if (priv->cfg && priv->cfg->sleep)
+		priv->cfg->sleep(fe);
+
+	return 0;
+}
+
+/* ------------------------------------------------------------------ */
+
+static int tda827xo_set_analog_params(struct dvb_frontend *fe,
+				      struct analog_parameters *params)
+{
+	unsigned char tuner_reg[8];
+	unsigned char reg2[2];
+	u32 N;
+	int i;
+	struct tda827x_priv *priv = fe->tuner_priv;
+	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0 };
+	unsigned int freq = params->frequency;
+
+	tda827x_set_std(fe, params);
+
+	if (params->mode == V4L2_TUNER_RADIO)
+		freq = freq / 1000;
+
+	N = freq + priv->sgIF;
+
+	i = 0;
+	while (tda827x_table[i].lomax < N * 62500) {
+		if (tda827x_table[i + 1].lomax == 0)
+			break;
+		i++;
+	}
+
+	N = N << tda827x_table[i].spd;
+
+	tuner_reg[0] = 0;
+	tuner_reg[1] = (unsigned char)(N>>8);
+	tuner_reg[2] = (unsigned char) N;
+	tuner_reg[3] = 0x40;
+	tuner_reg[4] = 0x52 + (priv->lpsel << 5);
+	tuner_reg[5] = (tda827x_table[i].spd    << 6) +
+		       (tda827x_table[i].div1p5 << 5) +
+		       (tda827x_table[i].bs     << 3) + tda827x_table[i].bp;
+	tuner_reg[6] = 0x8f + (tda827x_table[i].gc3 << 4);
+	tuner_reg[7] = 0x8f;
+
+	msg.buf = tuner_reg;
+	msg.len = 8;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	msg.buf = reg2;
+	msg.len = 2;
+	reg2[0] = 0x80;
+	reg2[1] = 0;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	reg2[0] = 0x60;
+	reg2[1] = 0xbf;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	reg2[0] = 0x30;
+	reg2[1] = tuner_reg[4] + 0x80;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	msleep(1);
+	reg2[0] = 0x30;
+	reg2[1] = tuner_reg[4] + 4;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	msleep(1);
+	reg2[0] = 0x30;
+	reg2[1] = tuner_reg[4];
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	msleep(550);
+	reg2[0] = 0x30;
+	reg2[1] = (tuner_reg[4] & 0xfc) + tda827x_table[i].cp;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	reg2[0] = 0x60;
+	reg2[1] = 0x3f;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	reg2[0] = 0x80;
+	reg2[1] = 0x08;   /* Vsync en */
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	priv->frequency = freq * 62500;
+
+	return 0;
+}
+
+static void tda827xo_agcf(struct dvb_frontend *fe)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	unsigned char data[] = { 0x80, 0x0c };
+	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
+			       .buf = data, .len = 2};
+
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+}
+
+/* ------------------------------------------------------------------ */
+
+struct tda827xa_data {
+	u32 lomax;
+	u8  svco;
+	u8  spd;
+	u8  scr;
+	u8  sbs;
+	u8  gc3;
+};
+
+static const struct tda827xa_data tda827xa_dvbt[] = {
+	{ .lomax =  56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 1},
+	{ .lomax =  67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
+	{ .lomax =  81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
+	{ .lomax =  97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
+	{ .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
+	{ .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+	{ .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+	{ .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+	{ .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+	{ .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
+	{ .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
+	{ .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
+	{ .lomax = 290000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
+	{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
+	{ .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
+	{ .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
+	{ .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
+	{ .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
+	{ .lomax = 550000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
+	{ .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
+	{ .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
+	{ .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
+	{ .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
+	{ .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
+	{ .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
+	{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
+	{ .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
+};
+
+static struct tda827xa_data tda827xa_analog[] = {
+	{ .lomax =  56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 3},
+	{ .lomax =  67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
+	{ .lomax =  81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
+	{ .lomax =  97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 3},
+	{ .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
+	{ .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+	{ .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+	{ .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+	{ .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+	{ .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
+	{ .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 3},
+	{ .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 3},
+	{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
+	{ .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3},
+	{ .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 3},
+	{ .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
+	{ .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
+	{ .lomax = 554000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
+	{ .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
+	{ .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
+	{ .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
+	{ .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
+	{ .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
+	{ .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
+	{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
+	{ .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
+};
+
+static int tda827xa_sleep(struct dvb_frontend *fe)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	static u8 buf[] = { 0x30, 0x90 };
+	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
+			       .buf = buf, .len = sizeof(buf) };
+
+	dprintk("%s:\n", __func__);
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	if (priv->cfg && priv->cfg->sleep)
+		priv->cfg->sleep(fe);
+
+	return 0;
+}
+
+static void tda827xa_lna_gain(struct dvb_frontend *fe, int high,
+			      struct analog_parameters *params)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	unsigned char buf[] = {0x22, 0x01};
+	int arg;
+	int gp_func;
+	struct i2c_msg msg = { .addr = priv->cfg->switch_addr, .flags = 0,
+			       .buf = buf, .len = sizeof(buf) };
+
+	if (NULL == priv->cfg) {
+		dprintk("tda827x_config not defined, cannot set LNA gain!\n");
+		return;
+	}
+	if (priv->cfg->config) {
+		if (high)
+			dprintk("setting LNA to high gain\n");
+		else
+			dprintk("setting LNA to low gain\n");
+	}
+	switch (priv->cfg->config) {
+	case 0: /* no LNA */
+		break;
+	case 1: /* switch is GPIO 0 of tda8290 */
+	case 2:
+		if (params == NULL) {
+			gp_func = 0;
+			arg  = 0;
+		} else {
+			/* turn Vsync on */
+			gp_func = 1;
+			if (params->std & V4L2_STD_MN)
+				arg = 1;
+			else
+				arg = 0;
+		}
+		if (priv->cfg->tuner_callback)
+			priv->cfg->tuner_callback(priv->i2c_adap->algo_data,
+								gp_func, arg);
+		buf[1] = high ? 0 : 1;
+		if (priv->cfg->config == 2)
+			buf[1] = high ? 1 : 0;
+		i2c_transfer(priv->i2c_adap, &msg, 1);
+		break;
+	case 3: /* switch with GPIO of saa713x */
+		if (priv->cfg->tuner_callback)
+			priv->cfg->tuner_callback(priv->i2c_adap->algo_data, 0, high);
+		break;
+	}
+}
+
+static int tda827xa_set_params(struct dvb_frontend *fe,
+			       struct dvb_frontend_parameters *params)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	u8 buf[11];
+
+	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
+			       .buf = buf, .len = sizeof(buf) };
+
+	int i, tuner_freq, if_freq;
+	u32 N;
+
+	dprintk("%s:\n", __func__);
+
+	tda827xa_lna_gain(fe, 1, NULL);
+	msleep(20);
+
+	switch (params->u.ofdm.bandwidth) {
+	case BANDWIDTH_6_MHZ:
+		if_freq = 4000000;
+		break;
+	case BANDWIDTH_7_MHZ:
+		if_freq = 4500000;
+		break;
+	default:		   /* 8 MHz or Auto */
+		if_freq = 5000000;
+		break;
+	}
+	tuner_freq = params->frequency + if_freq;
+
+	i = 0;
+	while (tda827xa_dvbt[i].lomax < tuner_freq) {
+		if(tda827xa_dvbt[i + 1].lomax == 0)
+			break;
+		i++;
+	}
+
+	N = ((tuner_freq + 31250) / 62500) << tda827xa_dvbt[i].spd;
+	buf[0] = 0;            // subaddress
+	buf[1] = N >> 8;
+	buf[2] = N & 0xff;
+	buf[3] = 0;
+	buf[4] = 0x16;
+	buf[5] = (tda827xa_dvbt[i].spd << 5) + (tda827xa_dvbt[i].svco << 3) +
+			tda827xa_dvbt[i].sbs;
+	buf[6] = 0x4b + (tda827xa_dvbt[i].gc3 << 4);
+	buf[7] = 0x1c;
+	buf[8] = 0x06;
+	buf[9] = 0x24;
+	buf[10] = 0x00;
+	msg.len = 11;
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) {
+		printk("%s: could not write to tuner at addr: 0x%02x\n",
+		       __func__, priv->i2c_addr << 1);
+		return -EIO;
+	}
+	buf[0] = 0x90;
+	buf[1] = 0xff;
+	buf[2] = 0x60;
+	buf[3] = 0x00;
+	buf[4] = 0x59;  // lpsel, for 6MHz + 2
+	msg.len = 5;
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	buf[0] = 0xa0;
+	buf[1] = 0x40;
+	msg.len = 2;
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	msleep(11);
+	msg.flags = I2C_M_RD;
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+	msg.flags = 0;
+
+	buf[1] >>= 4;
+	dprintk("tda8275a AGC2 gain is: %d\n", buf[1]);
+	if ((buf[1]) < 2) {
+		tda827xa_lna_gain(fe, 0, NULL);
+		buf[0] = 0x60;
+		buf[1] = 0x0c;
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 1);
+		i2c_transfer(priv->i2c_adap, &msg, 1);
+	}
+
+	buf[0] = 0xc0;
+	buf[1] = 0x99;    // lpsel, for 6MHz + 2
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	buf[0] = 0x60;
+	buf[1] = 0x3c;
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	/* correct CP value */
+	buf[0] = 0x30;
+	buf[1] = 0x10 + tda827xa_dvbt[i].scr;
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	msleep(163);
+	buf[0] = 0xc0;
+	buf[1] = 0x39;  // lpsel, for 6MHz + 2
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	msleep(3);
+	/* freeze AGC1 */
+	buf[0] = 0x50;
+	buf[1] = 0x4f + (tda827xa_dvbt[i].gc3 << 4);
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	priv->frequency = tuner_freq - if_freq; // FIXME
+	priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
+
+	return 0;
+}
+
+
+static int tda827xa_set_analog_params(struct dvb_frontend *fe,
+				      struct analog_parameters *params)
+{
+	unsigned char tuner_reg[11];
+	u32 N;
+	int i;
+	struct tda827x_priv *priv = fe->tuner_priv;
+	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
+			       .buf = tuner_reg, .len = sizeof(tuner_reg) };
+	unsigned int freq = params->frequency;
+
+	tda827x_set_std(fe, params);
+
+	tda827xa_lna_gain(fe, 1, params);
+	msleep(10);
+
+	if (params->mode == V4L2_TUNER_RADIO)
+		freq = freq / 1000;
+
+	N = freq + priv->sgIF;
+
+	i = 0;
+	while (tda827xa_analog[i].lomax < N * 62500) {
+		if (tda827xa_analog[i + 1].lomax == 0)
+			break;
+		i++;
+	}
+
+	N = N << tda827xa_analog[i].spd;
+
+	tuner_reg[0] = 0;
+	tuner_reg[1] = (unsigned char)(N>>8);
+	tuner_reg[2] = (unsigned char) N;
+	tuner_reg[3] = 0;
+	tuner_reg[4] = 0x16;
+	tuner_reg[5] = (tda827xa_analog[i].spd << 5) +
+		       (tda827xa_analog[i].svco << 3) +
+			tda827xa_analog[i].sbs;
+	tuner_reg[6] = 0x8b + (tda827xa_analog[i].gc3 << 4);
+	tuner_reg[7] = 0x1c;
+	tuner_reg[8] = 4;
+	tuner_reg[9] = 0x20;
+	tuner_reg[10] = 0x00;
+	msg.len = 11;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	tuner_reg[0] = 0x90;
+	tuner_reg[1] = 0xff;
+	tuner_reg[2] = 0xe0;
+	tuner_reg[3] = 0;
+	tuner_reg[4] = 0x99 + (priv->lpsel << 1);
+	msg.len = 5;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	tuner_reg[0] = 0xa0;
+	tuner_reg[1] = 0xc0;
+	msg.len = 2;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	tuner_reg[0] = 0x30;
+	tuner_reg[1] = 0x10 + tda827xa_analog[i].scr;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	msg.flags = I2C_M_RD;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+	msg.flags = 0;
+	tuner_reg[1] >>= 4;
+	dprintk("AGC2 gain is: %d\n", tuner_reg[1]);
+	if (tuner_reg[1] < 1)
+		tda827xa_lna_gain(fe, 0, params);
+
+	msleep(100);
+	tuner_reg[0] = 0x60;
+	tuner_reg[1] = 0x3c;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	msleep(163);
+	tuner_reg[0] = 0x50;
+	tuner_reg[1] = 0x8f + (tda827xa_analog[i].gc3 << 4);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	tuner_reg[0] = 0x80;
+	tuner_reg[1] = 0x28;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	tuner_reg[0] = 0xb0;
+	tuner_reg[1] = 0x01;
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	tuner_reg[0] = 0xc0;
+	tuner_reg[1] = 0x19 + (priv->lpsel << 1);
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+
+	priv->frequency = freq * 62500;
+
+	return 0;
+}
+
+static void tda827xa_agcf(struct dvb_frontend *fe)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	unsigned char data[] = {0x80, 0x2c};
+	struct i2c_msg msg = {.addr = priv->i2c_addr, .flags = 0,
+			      .buf = data, .len = 2};
+	i2c_transfer(priv->i2c_adap, &msg, 1);
+}
+
+/* ------------------------------------------------------------------ */
+
+static int tda827x_release(struct dvb_frontend *fe)
+{
+	kfree(fe->tuner_priv);
+	fe->tuner_priv = NULL;
+	return 0;
+}
+
+static int tda827x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	*frequency = priv->frequency;
+	return 0;
+}
+
+static int tda827x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	*bandwidth = priv->bandwidth;
+	return 0;
+}
+
+static int tda827x_init(struct dvb_frontend *fe)
+{
+	struct tda827x_priv *priv = fe->tuner_priv;
+	dprintk("%s:\n", __func__);
+	if (priv->cfg && priv->cfg->init)
+		priv->cfg->init(fe);
+
+	return 0;
+}
+
+static int tda827x_probe_version(struct dvb_frontend *fe);
+
+static int tda827x_initial_init(struct dvb_frontend *fe)
+{
+	int ret;
+	ret = tda827x_probe_version(fe);
+	if (ret)
+		return ret;
+	return fe->ops.tuner_ops.init(fe);
+}
+
+static int tda827x_initial_sleep(struct dvb_frontend *fe)
+{
+	int ret;
+	ret = tda827x_probe_version(fe);
+	if (ret)
+		return ret;
+	return fe->ops.tuner_ops.sleep(fe);
+}
+
+static struct dvb_tuner_ops tda827xo_tuner_ops = {
+	.info = {
+		.name = "Philips TDA827X",
+		.frequency_min  =  55000000,
+		.frequency_max  = 860000000,
+		.frequency_step =    250000
+	},
+	.release = tda827x_release,
+	.init = tda827x_initial_init,
+	.sleep = tda827x_initial_sleep,
+	.set_params = tda827xo_set_params,
+	.set_analog_params = tda827xo_set_analog_params,
+	.get_frequency = tda827x_get_frequency,
+	.get_bandwidth = tda827x_get_bandwidth,
+};
+
+static struct dvb_tuner_ops tda827xa_tuner_ops = {
+	.info = {
+		.name = "Philips TDA827XA",
+		.frequency_min  =  44000000,
+		.frequency_max  = 906000000,
+		.frequency_step =     62500
+	},
+	.release = tda827x_release,
+	.init = tda827x_init,
+	.sleep = tda827xa_sleep,
+	.set_params = tda827xa_set_params,
+	.set_analog_params = tda827xa_set_analog_params,
+	.get_frequency = tda827x_get_frequency,
+	.get_bandwidth = tda827x_get_bandwidth,
+};
+
+static int tda827x_probe_version(struct dvb_frontend *fe)
+{	u8 data;
+	struct tda827x_priv *priv = fe->tuner_priv;
+	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = I2C_M_RD,
+			       .buf = &data, .len = 1 };
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) {
+		printk("%s: could not read from tuner at addr: 0x%02x\n",
+		       __func__, msg.addr << 1);
+		return -EIO;
+	}
+	if ((data & 0x3c) == 0) {
+		dprintk("tda827x tuner found\n");
+		fe->ops.tuner_ops.init  = tda827x_init;
+		fe->ops.tuner_ops.sleep = tda827xo_sleep;
+		if (priv->cfg)
+			priv->cfg->agcf = tda827xo_agcf;
+	} else {
+		dprintk("tda827xa tuner found\n");
+		memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops));
+		if (priv->cfg)
+			priv->cfg->agcf = tda827xa_agcf;
+	}
+	return 0;
+}
+
+struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr,
+				    struct i2c_adapter *i2c,
+				    struct tda827x_config *cfg)
+{
+	struct tda827x_priv *priv = NULL;
+
+	dprintk("%s:\n", __func__);
+	priv = kzalloc(sizeof(struct tda827x_priv), GFP_KERNEL);
+	if (priv == NULL)
+		return NULL;
+
+	priv->i2c_addr = addr;
+	priv->i2c_adap = i2c;
+	priv->cfg = cfg;
+	memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops));
+	fe->tuner_priv = priv;
+
+	dprintk("type set to %s\n", fe->ops.tuner_ops.info.name);
+
+	return fe;
+}
+EXPORT_SYMBOL_GPL(tda827x_attach);
+
+MODULE_DESCRIPTION("DVB TDA827x driver");
+MODULE_AUTHOR("Hartmut Hackmann <hartmut.hackmann@t-online.de>");
+MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
+MODULE_LICENSE("GPL");
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */