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, 1093 insertions, 0 deletions

diff --git a/drivers/media/common/tuners/tuner-simple.c b/drivers/media/common/tuners/tuner-simple.c
new file mode 100644
index 00000000000..be8d903171b
--- /dev/null
+++ b/drivers/media/common/tuners/tuner-simple.c
@@ -0,0 +1,1093 @@
+/*
+ * i2c tv tuner chip device driver
+ * controls all those simple 4-control-bytes style tuners.
+ *
+ * This "tuner-simple" module was split apart from the original "tuner" module.
+ */
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/videodev.h>
+#include <media/tuner.h>
+#include <media/v4l2-common.h>
+#include <media/tuner-types.h>
+#include "tuner-i2c.h"
+#include "tuner-simple.h"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "enable verbose debug messages");
+
+#define TUNER_SIMPLE_MAX 64
+static unsigned int simple_devcount;
+
+static int offset;
+module_param(offset, int, 0664);
+MODULE_PARM_DESC(offset, "Allows to specify an offset for tuner");
+
+static unsigned int atv_input[TUNER_SIMPLE_MAX] = \
+			{ [0 ... (TUNER_SIMPLE_MAX-1)] = 0 };
+static unsigned int dtv_input[TUNER_SIMPLE_MAX] = \
+			{ [0 ... (TUNER_SIMPLE_MAX-1)] = 0 };
+module_param_array(atv_input, int, NULL, 0644);
+module_param_array(dtv_input, int, NULL, 0644);
+MODULE_PARM_DESC(atv_input, "specify atv rf input, 0 for autoselect");
+MODULE_PARM_DESC(dtv_input, "specify dtv rf input, 0 for autoselect");
+
+/* ---------------------------------------------------------------------- */
+
+/* tv standard selection for Temic 4046 FM5
+   this value takes the low bits of control byte 2
+   from datasheet Rev.01, Feb.00
+     standard     BG      I       L       L2      D
+     picture IF   38.9    38.9    38.9    33.95   38.9
+     sound 1      33.4    32.9    32.4    40.45   32.4
+     sound 2      33.16
+     NICAM        33.05   32.348  33.05           33.05
+ */
+#define TEMIC_SET_PAL_I         0x05
+#define TEMIC_SET_PAL_DK        0x09
+#define TEMIC_SET_PAL_L         0x0a /* SECAM ? */
+#define TEMIC_SET_PAL_L2        0x0b /* change IF ! */
+#define TEMIC_SET_PAL_BG        0x0c
+
+/* tv tuner system standard selection for Philips FQ1216ME
+   this value takes the low bits of control byte 2
+   from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
+     standard 		BG	DK	I	L	L`
+     picture carrier	38.90	38.90	38.90	38.90	33.95
+     colour		34.47	34.47	34.47	34.47	38.38
+     sound 1		33.40	32.40	32.90	32.40	40.45
+     sound 2		33.16	-	-	-	-
+     NICAM		33.05	33.05	32.35	33.05	39.80
+ */
+#define PHILIPS_SET_PAL_I	0x01 /* Bit 2 always zero !*/
+#define PHILIPS_SET_PAL_BGDK	0x09
+#define PHILIPS_SET_PAL_L2	0x0a
+#define PHILIPS_SET_PAL_L	0x0b
+
+/* system switching for Philips FI1216MF MK2
+   from datasheet "1996 Jul 09",
+    standard         BG     L      L'
+    picture carrier  38.90  38.90  33.95
+    colour	     34.47  34.37  38.38
+    sound 1          33.40  32.40  40.45
+    sound 2          33.16  -      -
+    NICAM            33.05  33.05  39.80
+ */
+#define PHILIPS_MF_SET_STD_BG	0x01 /* Bit 2 must be zero, Bit 3 is system output */
+#define PHILIPS_MF_SET_STD_L	0x03 /* Used on Secam France */
+#define PHILIPS_MF_SET_STD_LC	0x02 /* Used on SECAM L' */
+
+/* Control byte */
+
+#define TUNER_RATIO_MASK        0x06 /* Bit cb1:cb2 */
+#define TUNER_RATIO_SELECT_50   0x00
+#define TUNER_RATIO_SELECT_32   0x02
+#define TUNER_RATIO_SELECT_166  0x04
+#define TUNER_RATIO_SELECT_62   0x06
+
+#define TUNER_CHARGE_PUMP       0x40  /* Bit cb6 */
+
+/* Status byte */
+
+#define TUNER_POR	  0x80
+#define TUNER_FL          0x40
+#define TUNER_MODE        0x38
+#define TUNER_AFC         0x07
+#define TUNER_SIGNAL      0x07
+#define TUNER_STEREO      0x10
+
+#define TUNER_PLL_LOCKED   0x40
+#define TUNER_STEREO_MK3   0x04
+
+static DEFINE_MUTEX(tuner_simple_list_mutex);
+static LIST_HEAD(hybrid_tuner_instance_list);
+
+struct tuner_simple_priv {
+	unsigned int nr;
+	u16 last_div;
+
+	struct tuner_i2c_props i2c_props;
+	struct list_head hybrid_tuner_instance_list;
+
+	unsigned int type;
+	struct tunertype *tun;
+
+	u32 frequency;
+	u32 bandwidth;
+};
+
+/* ---------------------------------------------------------------------- */
+
+static int tuner_read_status(struct dvb_frontend *fe)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	unsigned char byte;
+
+	if (1 != tuner_i2c_xfer_recv(&priv->i2c_props, &byte, 1))
+		return 0;
+
+	return byte;
+}
+
+static inline int tuner_signal(const int status)
+{
+	return (status & TUNER_SIGNAL) << 13;
+}
+
+static inline int tuner_stereo(const int type, const int status)
+{
+	switch (type) {
+	case TUNER_PHILIPS_FM1216ME_MK3:
+	case TUNER_PHILIPS_FM1236_MK3:
+	case TUNER_PHILIPS_FM1256_IH3:
+	case TUNER_LG_NTSC_TAPE:
+		return ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
+	default:
+		return status & TUNER_STEREO;
+	}
+}
+
+static inline int tuner_islocked(const int status)
+{
+	return (status & TUNER_FL);
+}
+
+static inline int tuner_afcstatus(const int status)
+{
+	return (status & TUNER_AFC) - 2;
+}
+
+
+static int simple_get_status(struct dvb_frontend *fe, u32 *status)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	int tuner_status;
+
+	if (priv->i2c_props.adap == NULL)
+		return -EINVAL;
+
+	tuner_status = tuner_read_status(fe);
+
+	*status = 0;
+
+	if (tuner_islocked(tuner_status))
+		*status = TUNER_STATUS_LOCKED;
+	if (tuner_stereo(priv->type, tuner_status))
+		*status |= TUNER_STATUS_STEREO;
+
+	tuner_dbg("AFC Status: %d\n", tuner_afcstatus(tuner_status));
+
+	return 0;
+}
+
+static int simple_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	int signal;
+
+	if (priv->i2c_props.adap == NULL)
+		return -EINVAL;
+
+	signal = tuner_signal(tuner_read_status(fe));
+
+	*strength = signal;
+
+	tuner_dbg("Signal strength: %d\n", signal);
+
+	return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static inline char *tuner_param_name(enum param_type type)
+{
+	char *name;
+
+	switch (type) {
+	case TUNER_PARAM_TYPE_RADIO:
+		name = "radio";
+		break;
+	case TUNER_PARAM_TYPE_PAL:
+		name = "pal";
+		break;
+	case TUNER_PARAM_TYPE_SECAM:
+		name = "secam";
+		break;
+	case TUNER_PARAM_TYPE_NTSC:
+		name = "ntsc";
+		break;
+	case TUNER_PARAM_TYPE_DIGITAL:
+		name = "digital";
+		break;
+	default:
+		name = "unknown";
+		break;
+	}
+	return name;
+}
+
+static struct tuner_params *simple_tuner_params(struct dvb_frontend *fe,
+						enum param_type desired_type)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	struct tunertype *tun = priv->tun;
+	int i;
+
+	for (i = 0; i < tun->count; i++)
+		if (desired_type == tun->params[i].type)
+			break;
+
+	/* use default tuner params if desired_type not available */
+	if (i == tun->count) {
+		tuner_dbg("desired params (%s) undefined for tuner %d\n",
+			  tuner_param_name(desired_type), priv->type);
+		i = 0;
+	}
+
+	tuner_dbg("using tuner params #%d (%s)\n", i,
+		  tuner_param_name(tun->params[i].type));
+
+	return &tun->params[i];
+}
+
+static int simple_config_lookup(struct dvb_frontend *fe,
+				struct tuner_params *t_params,
+				int *frequency, u8 *config, u8 *cb)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	int i;
+
+	for (i = 0; i < t_params->count; i++) {
+		if (*frequency > t_params->ranges[i].limit)
+			continue;
+		break;
+	}
+	if (i == t_params->count) {
+		tuner_dbg("frequency out of range (%d > %d)\n",
+			  *frequency, t_params->ranges[i - 1].limit);
+		*frequency = t_params->ranges[--i].limit;
+	}
+	*config = t_params->ranges[i].config;
+	*cb     = t_params->ranges[i].cb;
+
+	tuner_dbg("freq = %d.%02d (%d), range = %d, "
+		  "config = 0x%02x, cb = 0x%02x\n",
+		  *frequency / 16, *frequency % 16 * 100 / 16, *frequency,
+		  i, *config, *cb);
+
+	return i;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void simple_set_rf_input(struct dvb_frontend *fe,
+				u8 *config, u8 *cb, unsigned int rf)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+
+	switch (priv->type) {
+	case TUNER_PHILIPS_TUV1236D:
+		switch (rf) {
+		case 1:
+			*cb |= 0x08;
+			break;
+		default:
+			*cb &= ~0x08;
+			break;
+		}
+		break;
+	case TUNER_PHILIPS_FCV1236D:
+		switch (rf) {
+		case 1:
+			*cb |= 0x01;
+			break;
+		default:
+			*cb &= ~0x01;
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+}
+
+static int simple_std_setup(struct dvb_frontend *fe,
+			    struct analog_parameters *params,
+			    u8 *config, u8 *cb)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	u8 tuneraddr;
+	int rc;
+
+	/* tv norm specific stuff for multi-norm tuners */
+	switch (priv->type) {
+	case TUNER_PHILIPS_SECAM: /* FI1216MF */
+		/* 0x01 -> ??? no change ??? */
+		/* 0x02 -> PAL BDGHI / SECAM L */
+		/* 0x04 -> ??? PAL others / SECAM others ??? */
+		*cb &= ~0x03;
+		if (params->std & V4L2_STD_SECAM_L)
+			/* also valid for V4L2_STD_SECAM */
+			*cb |= PHILIPS_MF_SET_STD_L;
+		else if (params->std & V4L2_STD_SECAM_LC)
+			*cb |= PHILIPS_MF_SET_STD_LC;
+		else /* V4L2_STD_B|V4L2_STD_GH */
+			*cb |= PHILIPS_MF_SET_STD_BG;
+		break;
+
+	case TUNER_TEMIC_4046FM5:
+		*cb &= ~0x0f;
+
+		if (params->std & V4L2_STD_PAL_BG) {
+			*cb |= TEMIC_SET_PAL_BG;
+
+		} else if (params->std & V4L2_STD_PAL_I) {
+			*cb |= TEMIC_SET_PAL_I;
+
+		} else if (params->std & V4L2_STD_PAL_DK) {
+			*cb |= TEMIC_SET_PAL_DK;
+
+		} else if (params->std & V4L2_STD_SECAM_L) {
+			*cb |= TEMIC_SET_PAL_L;
+
+		}
+		break;
+
+	case TUNER_PHILIPS_FQ1216ME:
+		*cb &= ~0x0f;
+
+		if (params->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
+			*cb |= PHILIPS_SET_PAL_BGDK;
+
+		} else if (params->std & V4L2_STD_PAL_I) {
+			*cb |= PHILIPS_SET_PAL_I;
+
+		} else if (params->std & V4L2_STD_SECAM_L) {
+			*cb |= PHILIPS_SET_PAL_L;
+
+		}
+		break;
+
+	case TUNER_PHILIPS_FCV1236D:
+		/* 0x00 -> ATSC antenna input 1 */
+		/* 0x01 -> ATSC antenna input 2 */
+		/* 0x02 -> NTSC antenna input 1 */
+		/* 0x03 -> NTSC antenna input 2 */
+		*cb &= ~0x03;
+		if (!(params->std & V4L2_STD_ATSC))
+			*cb |= 2;
+		break;
+
+	case TUNER_MICROTUNE_4042FI5:
+		/* Set the charge pump for fast tuning */
+		*config |= TUNER_CHARGE_PUMP;
+		break;
+
+	case TUNER_PHILIPS_TUV1236D:
+	{
+		/* 0x40 -> ATSC antenna input 1 */
+		/* 0x48 -> ATSC antenna input 2 */
+		/* 0x00 -> NTSC antenna input 1 */
+		/* 0x08 -> NTSC antenna input 2 */
+		u8 buffer[4] = { 0x14, 0x00, 0x17, 0x00};
+		*cb &= ~0x40;
+		if (params->std & V4L2_STD_ATSC) {
+			*cb |= 0x40;
+			buffer[1] = 0x04;
+		}
+		/* set to the correct mode (analog or digital) */
+		tuneraddr = priv->i2c_props.addr;
+		priv->i2c_props.addr = 0x0a;
+		rc = tuner_i2c_xfer_send(&priv->i2c_props, &buffer[0], 2);
+		if (2 != rc)
+			tuner_warn("i2c i/o error: rc == %d "
+				   "(should be 2)\n", rc);
+		rc = tuner_i2c_xfer_send(&priv->i2c_props, &buffer[2], 2);
+		if (2 != rc)
+			tuner_warn("i2c i/o error: rc == %d "
+				   "(should be 2)\n", rc);
+		priv->i2c_props.addr = tuneraddr;
+		break;
+	}
+	}
+	if (atv_input[priv->nr])
+		simple_set_rf_input(fe, config, cb, atv_input[priv->nr]);
+
+	return 0;
+}
+
+static int simple_post_tune(struct dvb_frontend *fe, u8 *buffer,
+			    u16 div, u8 config, u8 cb)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	int rc;
+
+	switch (priv->type) {
+	case TUNER_LG_TDVS_H06XF:
+		/* Set the Auxiliary Byte. */
+		buffer[0] = buffer[2];
+		buffer[0] &= ~0x20;
+		buffer[0] |= 0x18;
+		buffer[1] = 0x20;
+		tuner_dbg("tv 0x%02x 0x%02x\n", buffer[0], buffer[1]);
+
+		rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 2);
+		if (2 != rc)
+			tuner_warn("i2c i/o error: rc == %d "
+				   "(should be 2)\n", rc);
+		break;
+	case TUNER_MICROTUNE_4042FI5:
+	{
+		/* FIXME - this may also work for other tuners */
+		unsigned long timeout = jiffies + msecs_to_jiffies(1);
+		u8 status_byte = 0;
+
+		/* Wait until the PLL locks */
+		for (;;) {
+			if (time_after(jiffies, timeout))
+				return 0;
+			rc = tuner_i2c_xfer_recv(&priv->i2c_props,
+						 &status_byte, 1);
+			if (1 != rc) {
+				tuner_warn("i2c i/o read error: rc == %d "
+					   "(should be 1)\n", rc);
+				break;
+			}
+			if (status_byte & TUNER_PLL_LOCKED)
+				break;
+			udelay(10);
+		}
+
+		/* Set the charge pump for optimized phase noise figure */
+		config &= ~TUNER_CHARGE_PUMP;
+		buffer[0] = (div>>8) & 0x7f;
+		buffer[1] = div      & 0xff;
+		buffer[2] = config;
+		buffer[3] = cb;
+		tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
+			  buffer[0], buffer[1], buffer[2], buffer[3]);
+
+		rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
+		if (4 != rc)
+			tuner_warn("i2c i/o error: rc == %d "
+				   "(should be 4)\n", rc);
+		break;
+	}
+	}
+
+	return 0;
+}
+
+static int simple_radio_bandswitch(struct dvb_frontend *fe, u8 *buffer)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+
+	switch (priv->type) {
+	case TUNER_TENA_9533_DI:
+	case TUNER_YMEC_TVF_5533MF:
+		tuner_dbg("This tuner doesn't have FM. "
+			  "Most cards have a TEA5767 for FM\n");
+		return 0;
+	case TUNER_PHILIPS_FM1216ME_MK3:
+	case TUNER_PHILIPS_FM1236_MK3:
+	case TUNER_PHILIPS_FMD1216ME_MK3:
+	case TUNER_LG_NTSC_TAPE:
+	case TUNER_PHILIPS_FM1256_IH3:
+		buffer[3] = 0x19;
+		break;
+	case TUNER_TNF_5335MF:
+		buffer[3] = 0x11;
+		break;
+	case TUNER_LG_PAL_FM:
+		buffer[3] = 0xa5;
+		break;
+	case TUNER_THOMSON_DTT761X:
+		buffer[3] = 0x39;
+		break;
+	case TUNER_MICROTUNE_4049FM5:
+	default:
+		buffer[3] = 0xa4;
+		break;
+	}
+
+	return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int simple_set_tv_freq(struct dvb_frontend *fe,
+			      struct analog_parameters *params)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	u8 config, cb;
+	u16 div;
+	struct tunertype *tun;
+	u8 buffer[4];
+	int rc, IFPCoff, i;
+	enum param_type desired_type;
+	struct tuner_params *t_params;
+
+	tun = priv->tun;
+
+	/* IFPCoff = Video Intermediate Frequency - Vif:
+		940  =16*58.75  NTSC/J (Japan)
+		732  =16*45.75  M/N STD
+		704  =16*44     ATSC (at DVB code)
+		632  =16*39.50  I U.K.
+		622.4=16*38.90  B/G D/K I, L STD
+		592  =16*37.00  D China
+		590  =16.36.875 B Australia
+		543.2=16*33.95  L' STD
+		171.2=16*10.70  FM Radio (at set_radio_freq)
+	*/
+
+	if (params->std == V4L2_STD_NTSC_M_JP) {
+		IFPCoff      = 940;
+		desired_type = TUNER_PARAM_TYPE_NTSC;
+	} else if ((params->std & V4L2_STD_MN) &&
+		  !(params->std & ~V4L2_STD_MN)) {
+		IFPCoff      = 732;
+		desired_type = TUNER_PARAM_TYPE_NTSC;
+	} else if (params->std == V4L2_STD_SECAM_LC) {
+		IFPCoff      = 543;
+		desired_type = TUNER_PARAM_TYPE_SECAM;
+	} else {
+		IFPCoff      = 623;
+		desired_type = TUNER_PARAM_TYPE_PAL;
+	}
+
+	t_params = simple_tuner_params(fe, desired_type);
+
+	i = simple_config_lookup(fe, t_params, &params->frequency,
+				 &config, &cb);
+
+	div = params->frequency + IFPCoff + offset;
+
+	tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, "
+		  "Offset=%d.%02d MHz, div=%0d\n",
+		  params->frequency / 16, params->frequency % 16 * 100 / 16,
+		  IFPCoff / 16, IFPCoff % 16 * 100 / 16,
+		  offset / 16, offset % 16 * 100 / 16, div);
+
+	/* tv norm specific stuff for multi-norm tuners */
+	simple_std_setup(fe, params, &config, &cb);
+
+	if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
+		buffer[0] = config;
+		buffer[1] = cb;
+		buffer[2] = (div>>8) & 0x7f;
+		buffer[3] = div      & 0xff;
+	} else {
+		buffer[0] = (div>>8) & 0x7f;
+		buffer[1] = div      & 0xff;
+		buffer[2] = config;
+		buffer[3] = cb;
+	}
+	priv->last_div = div;
+	if (t_params->has_tda9887) {
+		struct v4l2_priv_tun_config tda9887_cfg;
+		int config = 0;
+		int is_secam_l = (params->std & (V4L2_STD_SECAM_L |
+						 V4L2_STD_SECAM_LC)) &&
+			!(params->std & ~(V4L2_STD_SECAM_L |
+					  V4L2_STD_SECAM_LC));
+
+		tda9887_cfg.tuner = TUNER_TDA9887;
+		tda9887_cfg.priv  = &config;
+
+		if (params->std == V4L2_STD_SECAM_LC) {
+			if (t_params->port1_active ^ t_params->port1_invert_for_secam_lc)
+				config |= TDA9887_PORT1_ACTIVE;
+			if (t_params->port2_active ^ t_params->port2_invert_for_secam_lc)
+				config |= TDA9887_PORT2_ACTIVE;
+		} else {
+			if (t_params->port1_active)
+				config |= TDA9887_PORT1_ACTIVE;
+			if (t_params->port2_active)
+				config |= TDA9887_PORT2_ACTIVE;
+		}
+		if (t_params->intercarrier_mode)
+			config |= TDA9887_INTERCARRIER;
+		if (is_secam_l) {
+			if (i == 0 && t_params->default_top_secam_low)
+				config |= TDA9887_TOP(t_params->default_top_secam_low);
+			else if (i == 1 && t_params->default_top_secam_mid)
+				config |= TDA9887_TOP(t_params->default_top_secam_mid);
+			else if (t_params->default_top_secam_high)
+				config |= TDA9887_TOP(t_params->default_top_secam_high);
+		} else {
+			if (i == 0 && t_params->default_top_low)
+				config |= TDA9887_TOP(t_params->default_top_low);
+			else if (i == 1 && t_params->default_top_mid)
+				config |= TDA9887_TOP(t_params->default_top_mid);
+			else if (t_params->default_top_high)
+				config |= TDA9887_TOP(t_params->default_top_high);
+		}
+		if (t_params->default_pll_gating_18)
+			config |= TDA9887_GATING_18;
+		i2c_clients_command(priv->i2c_props.adap, TUNER_SET_CONFIG,
+				    &tda9887_cfg);
+	}
+	tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
+		  buffer[0], buffer[1], buffer[2], buffer[3]);
+
+	rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
+	if (4 != rc)
+		tuner_warn("i2c i/o error: rc == %d (should be 4)\n", rc);
+
+	simple_post_tune(fe, &buffer[0], div, config, cb);
+
+	return 0;
+}
+
+static int simple_set_radio_freq(struct dvb_frontend *fe,
+				 struct analog_parameters *params)
+{
+	struct tunertype *tun;
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	u8 buffer[4];
+	u16 div;
+	int rc, j;
+	struct tuner_params *t_params;
+	unsigned int freq = params->frequency;
+
+	tun = priv->tun;
+
+	for (j = tun->count-1; j > 0; j--)
+		if (tun->params[j].type == TUNER_PARAM_TYPE_RADIO)
+			break;
+	/* default t_params (j=0) will be used if desired type wasn't found */
+	t_params = &tun->params[j];
+
+	/* Select Radio 1st IF used */
+	switch (t_params->radio_if) {
+	case 0: /* 10.7 MHz */
+		freq += (unsigned int)(10.7*16000);
+		break;
+	case 1: /* 33.3 MHz */
+		freq += (unsigned int)(33.3*16000);
+		break;
+	case 2: /* 41.3 MHz */
+		freq += (unsigned int)(41.3*16000);
+		break;
+	default:
+		tuner_warn("Unsupported radio_if value %d\n",
+			   t_params->radio_if);
+		return 0;
+	}
+
+	/* Bandswitch byte */
+	simple_radio_bandswitch(fe, &buffer[0]);
+
+	buffer[2] = (t_params->ranges[0].config & ~TUNER_RATIO_MASK) |
+		    TUNER_RATIO_SELECT_50; /* 50 kHz step */
+
+	/* Convert from 1/16 kHz V4L steps to 1/20 MHz (=50 kHz) PLL steps
+	   freq * (1 Mhz / 16000 V4L steps) * (20 PLL steps / 1 MHz) =
+	   freq * (1/800) */
+	div = (freq + 400) / 800;
+
+	if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
+		buffer[0] = buffer[2];
+		buffer[1] = buffer[3];
+		buffer[2] = (div>>8) & 0x7f;
+		buffer[3] = div      & 0xff;
+	} else {
+		buffer[0] = (div>>8) & 0x7f;
+		buffer[1] = div      & 0xff;
+	}
+
+	tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
+	       buffer[0], buffer[1], buffer[2], buffer[3]);
+	priv->last_div = div;
+
+	if (t_params->has_tda9887) {
+		int config = 0;
+		struct v4l2_priv_tun_config tda9887_cfg;
+
+		tda9887_cfg.tuner = TUNER_TDA9887;
+		tda9887_cfg.priv = &config;
+
+		if (t_params->port1_active &&
+		    !t_params->port1_fm_high_sensitivity)
+			config |= TDA9887_PORT1_ACTIVE;
+		if (t_params->port2_active &&
+		    !t_params->port2_fm_high_sensitivity)
+			config |= TDA9887_PORT2_ACTIVE;
+		if (t_params->intercarrier_mode)
+			config |= TDA9887_INTERCARRIER;
+/*		if (t_params->port1_set_for_fm_mono)
+			config &= ~TDA9887_PORT1_ACTIVE;*/
+		if (t_params->fm_gain_normal)
+			config |= TDA9887_GAIN_NORMAL;
+		if (t_params->radio_if == 2)
+			config |= TDA9887_RIF_41_3;
+		i2c_clients_command(priv->i2c_props.adap, TUNER_SET_CONFIG,
+				    &tda9887_cfg);
+	}
+	rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
+	if (4 != rc)
+		tuner_warn("i2c i/o error: rc == %d (should be 4)\n", rc);
+
+	return 0;
+}
+
+static int simple_set_params(struct dvb_frontend *fe,
+			     struct analog_parameters *params)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	int ret = -EINVAL;
+
+	if (priv->i2c_props.adap == NULL)
+		return -EINVAL;
+
+	switch (params->mode) {
+	case V4L2_TUNER_RADIO:
+		ret = simple_set_radio_freq(fe, params);
+		priv->frequency = params->frequency * 125 / 2;
+		break;
+	case V4L2_TUNER_ANALOG_TV:
+	case V4L2_TUNER_DIGITAL_TV:
+		ret = simple_set_tv_freq(fe, params);
+		priv->frequency = params->frequency * 62500;
+		break;
+	}
+	priv->bandwidth = 0;
+
+	return ret;
+}
+
+static void simple_set_dvb(struct dvb_frontend *fe, u8 *buf,
+			   const struct dvb_frontend_parameters *params)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+
+	switch (priv->type) {
+	case TUNER_PHILIPS_FMD1216ME_MK3:
+		if (params->u.ofdm.bandwidth == BANDWIDTH_8_MHZ &&
+		    params->frequency >= 158870000)
+			buf[3] |= 0x08;
+		break;
+	case TUNER_PHILIPS_TD1316:
+		/* determine band */
+		buf[3] |= (params->frequency < 161000000) ? 1 :
+			  (params->frequency < 444000000) ? 2 : 4;
+
+		/* setup PLL filter */
+		if (params->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
+			buf[3] |= 1 << 3;
+		break;
+	case TUNER_PHILIPS_TUV1236D:
+	case TUNER_PHILIPS_FCV1236D:
+	{
+		unsigned int new_rf;
+
+		if (dtv_input[priv->nr])
+			new_rf = dtv_input[priv->nr];
+		else
+			switch (params->u.vsb.modulation) {
+			case QAM_64:
+			case QAM_256:
+				new_rf = 1;
+				break;
+			case VSB_8:
+			default:
+				new_rf = 0;
+				break;
+			}
+		simple_set_rf_input(fe, &buf[2], &buf[3], new_rf);
+		break;
+	}
+	default:
+		break;
+	}
+}
+
+static u32 simple_dvb_configure(struct dvb_frontend *fe, u8 *buf,
+				const struct dvb_frontend_parameters *params)
+{
+	/* This function returns the tuned frequency on success, 0 on error */
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	struct tunertype *tun = priv->tun;
+	static struct tuner_params *t_params;
+	u8 config, cb;
+	u32 div;
+	int ret, frequency = params->frequency / 62500;
+
+	t_params = simple_tuner_params(fe, TUNER_PARAM_TYPE_DIGITAL);
+	ret = simple_config_lookup(fe, t_params, &frequency, &config, &cb);
+	if (ret < 0)
+		return 0; /* failure */
+
+	div = ((frequency + t_params->iffreq) * 62500 + offset +
+	       tun->stepsize/2) / tun->stepsize;
+
+	buf[0] = div >> 8;
+	buf[1] = div & 0xff;
+	buf[2] = config;
+	buf[3] = cb;
+
+	simple_set_dvb(fe, buf, params);
+
+	tuner_dbg("%s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
+		  tun->name, div, buf[0], buf[1], buf[2], buf[3]);
+
+	/* calculate the frequency we set it to */
+	return (div * tun->stepsize) - t_params->iffreq;
+}
+
+static int simple_dvb_calc_regs(struct dvb_frontend *fe,
+				struct dvb_frontend_parameters *params,
+				u8 *buf, int buf_len)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	u32 frequency;
+
+	if (buf_len < 5)
+		return -EINVAL;
+
+	frequency = simple_dvb_configure(fe, buf+1, params);
+	if (frequency == 0)
+		return -EINVAL;
+
+	buf[0] = priv->i2c_props.addr;
+
+	priv->frequency = frequency;
+	priv->bandwidth = (fe->ops.info.type == FE_OFDM) ?
+		params->u.ofdm.bandwidth : 0;
+
+	return 5;
+}
+
+static int simple_dvb_set_params(struct dvb_frontend *fe,
+				 struct dvb_frontend_parameters *params)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	u32 prev_freq, prev_bw;
+	int ret;
+	u8 buf[5];
+
+	if (priv->i2c_props.adap == NULL)
+		return -EINVAL;
+
+	prev_freq = priv->frequency;
+	prev_bw   = priv->bandwidth;
+
+	ret = simple_dvb_calc_regs(fe, params, buf, 5);
+	if (ret != 5)
+		goto fail;
+
+	/* put analog demod in standby when tuning digital */
+	if (fe->ops.analog_ops.standby)
+		fe->ops.analog_ops.standby(fe);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	/* buf[0] contains the i2c address, but *
+	 * we already have it in i2c_props.addr */
+	ret = tuner_i2c_xfer_send(&priv->i2c_props, buf+1, 4);
+	if (ret != 4)
+		goto fail;
+
+	return 0;
+fail:
+	/* calc_regs sets frequency and bandwidth. if we failed, unset them */
+	priv->frequency = prev_freq;
+	priv->bandwidth = prev_bw;
+
+	return ret;
+}
+
+static int simple_init(struct dvb_frontend *fe)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+
+	if (priv->i2c_props.adap == NULL)
+		return -EINVAL;
+
+	if (priv->tun->initdata) {
+		int ret;
+
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 1);
+
+		ret = tuner_i2c_xfer_send(&priv->i2c_props,
+					  priv->tun->initdata + 1,
+					  priv->tun->initdata[0]);
+		if (ret != priv->tun->initdata[0])
+			return ret;
+	}
+
+	return 0;
+}
+
+static int simple_sleep(struct dvb_frontend *fe)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+
+	if (priv->i2c_props.adap == NULL)
+		return -EINVAL;
+
+	if (priv->tun->sleepdata) {
+		int ret;
+
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 1);
+
+		ret = tuner_i2c_xfer_send(&priv->i2c_props,
+					  priv->tun->sleepdata + 1,
+					  priv->tun->sleepdata[0]);
+		if (ret != priv->tun->sleepdata[0])
+			return ret;
+	}
+
+	return 0;
+}
+
+static int simple_release(struct dvb_frontend *fe)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+
+	mutex_lock(&tuner_simple_list_mutex);
+
+	if (priv)
+		hybrid_tuner_release_state(priv);
+
+	mutex_unlock(&tuner_simple_list_mutex);
+
+	fe->tuner_priv = NULL;
+
+	return 0;
+}
+
+static int simple_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	*frequency = priv->frequency;
+	return 0;
+}
+
+static int simple_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+	struct tuner_simple_priv *priv = fe->tuner_priv;
+	*bandwidth = priv->bandwidth;
+	return 0;
+}
+
+static struct dvb_tuner_ops simple_tuner_ops = {
+	.init              = simple_init,
+	.sleep             = simple_sleep,
+	.set_analog_params = simple_set_params,
+	.set_params        = simple_dvb_set_params,
+	.calc_regs         = simple_dvb_calc_regs,
+	.release           = simple_release,
+	.get_frequency     = simple_get_frequency,
+	.get_bandwidth     = simple_get_bandwidth,
+	.get_status        = simple_get_status,
+	.get_rf_strength   = simple_get_rf_strength,
+};
+
+struct dvb_frontend *simple_tuner_attach(struct dvb_frontend *fe,
+					 struct i2c_adapter *i2c_adap,
+					 u8 i2c_addr,
+					 unsigned int type)
+{
+	struct tuner_simple_priv *priv = NULL;
+	int instance;
+
+	if (type >= tuner_count) {
+		printk(KERN_WARNING "%s: invalid tuner type: %d (max: %d)\n",
+		       __func__, type, tuner_count-1);
+		return NULL;
+	}
+
+	/* If i2c_adap is set, check that the tuner is at the correct address.
+	 * Otherwise, if i2c_adap is NULL, the tuner will be programmed directly
+	 * by the digital demod via calc_regs.
+	 */
+	if (i2c_adap != NULL) {
+		u8 b[1];
+		struct i2c_msg msg = {
+			.addr = i2c_addr, .flags = I2C_M_RD,
+			.buf = b, .len = 1,
+		};
+
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 1);
+
+		if (1 != i2c_transfer(i2c_adap, &msg, 1))
+			tuner_warn("unable to probe %s, proceeding anyway.",
+				   tuners[type].name);
+
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 0);
+	}
+
+	mutex_lock(&tuner_simple_list_mutex);
+
+	instance = hybrid_tuner_request_state(struct tuner_simple_priv, priv,
+					      hybrid_tuner_instance_list,
+					      i2c_adap, i2c_addr,
+					      "tuner-simple");
+	switch (instance) {
+	case 0:
+		mutex_unlock(&tuner_simple_list_mutex);
+		return NULL;
+		break;
+	case 1:
+		fe->tuner_priv = priv;
+
+		priv->type = type;
+		priv->tun  = &tuners[type];
+		priv->nr   = simple_devcount++;
+		break;
+	default:
+		fe->tuner_priv = priv;
+		break;
+	}
+
+	mutex_unlock(&tuner_simple_list_mutex);
+
+	memcpy(&fe->ops.tuner_ops, &simple_tuner_ops,
+	       sizeof(struct dvb_tuner_ops));
+
+	tuner_info("type set to %d (%s)\n", type, priv->tun->name);
+
+	if ((debug) || ((atv_input[priv->nr] > 0) ||
+			(dtv_input[priv->nr] > 0))) {
+		if (0 == atv_input[priv->nr])
+			tuner_info("tuner %d atv rf input will be "
+				   "autoselected\n", priv->nr);
+		else
+			tuner_info("tuner %d atv rf input will be "
+				   "set to input %d (insmod option)\n",
+				   priv->nr, atv_input[priv->nr]);
+		if (0 == dtv_input[priv->nr])
+			tuner_info("tuner %d dtv rf input will be "
+				   "autoselected\n", priv->nr);
+		else
+			tuner_info("tuner %d dtv rf input will be "
+				   "set to input %d (insmod option)\n",
+				   priv->nr, dtv_input[priv->nr]);
+	}
+
+	strlcpy(fe->ops.tuner_ops.info.name, priv->tun->name,
+		sizeof(fe->ops.tuner_ops.info.name));
+
+	return fe;
+}
+EXPORT_SYMBOL_GPL(simple_tuner_attach);
+
+MODULE_DESCRIPTION("Simple 4-control-bytes style tuner driver");
+MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
+MODULE_LICENSE("GPL");
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */