Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:
 "The first part of the media updates for Kernel 3.7.

  This series contain:

   - A major tree renaming patch series: now, drivers are organized
     internally by their used bus, instead of by V4L2 and/or DVB API,
     providing a cleaner driver location for hybrid drivers that
     implement both APIs, and allowing to cleanup the Kconfig items and
     make them more intuitive for the end user;

   - Media Kernel developers are typically very lazy with their duties
     of keeping the MAINTAINERS entries for their drivers updated.  As
     now the tree is more organized, we're doing an effort to add/update
     those entries for the drivers that aren't currently orphan;

   - Several DVB USB drivers got moved to a new DVB USB v2 core; the new
     core fixes several bugs (as the existing one that got bitroted).
     Now, suspend/resume finally started to work fine (at least with
     some devices - we should expect more work with regards to it);

   - added multistream support for DVB-T2, and unified the API for
     DVB-S2 and ISDB-S.  Backward binary support is preserved;

   - as usual, a few new drivers, some V4L2 core improvements and lots
     of drivers improvements and fixes.

  There are some points to notice on this series:

   1) you should expect a trivial merge conflict on your tree, with the
      removal of Documentation/feature-removal-schedule.txt: this series
      would be adding two additional entries there.  I opted to not
      rebase it due to this recent change;

   2) With regards to the PCTV 520e udev-related breakage, I opted to
      fix it in a way that the patches can be backported to 3.5 even
      without your firmware fix patch.  This way, Greg doesn't need to
      rush backporting your patch (as there are still the firmware cache
      and firmware path customization issues to be addressed there).

      I'll send later a patch (likely after the end of the merge window)
      reverting the rest of the DRX-K async firmware request, fully
      restoring its original behaviour to allow media drivers to
      initialize everything serialized as before for 3.7 and upper.

   3) I'm planning to work on this weekend to test the DMABUF patches
      for V4L2.  The patches are on my queue for several Kernel cycles,
      but, up to now, there is/was no way to test the series locally.

      I have some concerns about this particular changeset with regards
      to security issues, and with regards to the replacement of the old
      VIDIOC_OVERLAY ioctl's that is broken on modern systems, due to
      GPU drivers change.  The Overlay API allows direct PCI2PCI
      transfers from a media capture card into the GPU framebuffer, but
      its API is crappy.  Also, the only existing X11 driver that
      implements it requires a XV extension that is not available
      anymore on modern drivers.  The DMABUF can do the same thing, but
      with it is promising to be a properly-designed API.  If I can
      successfully test this series and be happy with it, I should be
      asking you to pull them next week."

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (717 commits)
  em28xx: regression fix: use DRX-K sync firmware requests on em28xx
  drxk: allow loading firmware synchrousnously
  em28xx: Make all em28xx extensions to be initialized asynchronously
  [media] tda18271: properly report read errors in tda18271_get_id
  [media] tda18271: delay IR & RF calibration until init() if delay_cal is set
  [media] MAINTAINERS: add Michael Krufky as tda827x maintainer
  [media] MAINTAINERS: add Michael Krufky as tda8290 maintainer
  [media] MAINTAINERS: add Michael Krufky as cxusb maintainer
  [media] MAINTAINERS: add Michael Krufky as lg2160 maintainer
  [media] MAINTAINERS: add Michael Krufky as lgdt3305 maintainer
  [media] MAINTAINERS: add Michael Krufky as mxl111sf maintainer
  [media] MAINTAINERS: add Michael Krufky as mxl5007t maintainer
  [media] MAINTAINERS: add Michael Krufky as tda18271 maintainer
  [media] s5p-tv: Report only multi-plane capabilities in vidioc_querycap
  [media] s5p-mfc: Fix misplaced return statement in s5p_mfc_suspend()
  [media] exynos-gsc: Add missing static storage class specifiers
  [media] exynos-gsc: Remove <linux/version.h> header file inclusion
  [media] s5p-fimc: Fix incorrect condition in fimc_lite_reqbufs()
  [media] s5p-tv: Fix potential NULL pointer dereference error
  [media] s5k6aa: Fix possible NULL pointer dereference
  ...

1 files changed, 670 insertions, 0 deletions

diff --git a/drivers/media/tuners/mt20xx.c b/drivers/media/tuners/mt20xx.c
new file mode 100644
index 00000000000..0e74e97e0d1
--- /dev/null
+++ b/drivers/media/tuners/mt20xx.c
@@ -0,0 +1,670 @@
+/*
+ * i2c tv tuner chip device driver
+ * controls microtune tuners, mt2032 + mt2050 at the moment.
+ *
+ * This "mt20xx" module was split apart from the original "tuner" module.
+ */
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+#include "tuner-i2c.h"
+#include "mt20xx.h"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "enable verbose debug messages");
+
+/* ---------------------------------------------------------------------- */
+
+static unsigned int optimize_vco  = 1;
+module_param(optimize_vco,      int, 0644);
+
+static unsigned int tv_antenna    = 1;
+module_param(tv_antenna,        int, 0644);
+
+static unsigned int radio_antenna;
+module_param(radio_antenna,     int, 0644);
+
+/* ---------------------------------------------------------------------- */
+
+#define MT2032 0x04
+#define MT2030 0x06
+#define MT2040 0x07
+#define MT2050 0x42
+
+static char *microtune_part[] = {
+	[ MT2030 ] = "MT2030",
+	[ MT2032 ] = "MT2032",
+	[ MT2040 ] = "MT2040",
+	[ MT2050 ] = "MT2050",
+};
+
+struct microtune_priv {
+	struct tuner_i2c_props i2c_props;
+
+	unsigned int xogc;
+	//unsigned int radio_if2;
+
+	u32 frequency;
+};
+
+static int microtune_release(struct dvb_frontend *fe)
+{
+	kfree(fe->tuner_priv);
+	fe->tuner_priv = NULL;
+
+	return 0;
+}
+
+static int microtune_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	*frequency = priv->frequency;
+	return 0;
+}
+
+// IsSpurInBand()?
+static int mt2032_spurcheck(struct dvb_frontend *fe,
+			    int f1, int f2, int spectrum_from,int spectrum_to)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	int n1=1,n2,f;
+
+	f1=f1/1000; //scale to kHz to avoid 32bit overflows
+	f2=f2/1000;
+	spectrum_from/=1000;
+	spectrum_to/=1000;
+
+	tuner_dbg("spurcheck f1=%d f2=%d  from=%d to=%d\n",
+		  f1,f2,spectrum_from,spectrum_to);
+
+	do {
+	    n2=-n1;
+	    f=n1*(f1-f2);
+	    do {
+		n2--;
+		f=f-f2;
+		tuner_dbg("spurtest n1=%d n2=%d ftest=%d\n",n1,n2,f);
+
+		if( (f>spectrum_from) && (f<spectrum_to))
+			tuner_dbg("mt2032 spurcheck triggered: %d\n",n1);
+	    } while ( (f>(f2-spectrum_to)) || (n2>-5));
+	    n1++;
+	} while (n1<5);
+
+	return 1;
+}
+
+static int mt2032_compute_freq(struct dvb_frontend *fe,
+			       unsigned int rfin,
+			       unsigned int if1, unsigned int if2,
+			       unsigned int spectrum_from,
+			       unsigned int spectrum_to,
+			       unsigned char *buf,
+			       int *ret_sel,
+			       unsigned int xogc) //all in Hz
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	unsigned int fref,lo1,lo1n,lo1a,s,sel,lo1freq, desired_lo1,
+		desired_lo2,lo2,lo2n,lo2a,lo2num,lo2freq;
+
+	fref= 5250 *1000; //5.25MHz
+	desired_lo1=rfin+if1;
+
+	lo1=(2*(desired_lo1/1000)+(fref/1000)) / (2*fref/1000);
+	lo1n=lo1/8;
+	lo1a=lo1-(lo1n*8);
+
+	s=rfin/1000/1000+1090;
+
+	if(optimize_vco) {
+		if(s>1890) sel=0;
+		else if(s>1720) sel=1;
+		else if(s>1530) sel=2;
+		else if(s>1370) sel=3;
+		else sel=4; // >1090
+	}
+	else {
+		if(s>1790) sel=0; // <1958
+		else if(s>1617) sel=1;
+		else if(s>1449) sel=2;
+		else if(s>1291) sel=3;
+		else sel=4; // >1090
+	}
+	*ret_sel=sel;
+
+	lo1freq=(lo1a+8*lo1n)*fref;
+
+	tuner_dbg("mt2032: rfin=%d lo1=%d lo1n=%d lo1a=%d sel=%d, lo1freq=%d\n",
+		  rfin,lo1,lo1n,lo1a,sel,lo1freq);
+
+	desired_lo2=lo1freq-rfin-if2;
+	lo2=(desired_lo2)/fref;
+	lo2n=lo2/8;
+	lo2a=lo2-(lo2n*8);
+	lo2num=((desired_lo2/1000)%(fref/1000))* 3780/(fref/1000); //scale to fit in 32bit arith
+	lo2freq=(lo2a+8*lo2n)*fref + lo2num*(fref/1000)/3780*1000;
+
+	tuner_dbg("mt2032: rfin=%d lo2=%d lo2n=%d lo2a=%d num=%d lo2freq=%d\n",
+		  rfin,lo2,lo2n,lo2a,lo2num,lo2freq);
+
+	if (lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a > 7 || lo2n < 17 ||
+			lo2n > 30) {
+		tuner_info("mt2032: frequency parameters out of range: %d %d %d %d\n",
+			   lo1a, lo1n, lo2a,lo2n);
+		return(-1);
+	}
+
+	mt2032_spurcheck(fe, lo1freq, desired_lo2,  spectrum_from, spectrum_to);
+	// should recalculate lo1 (one step up/down)
+
+	// set up MT2032 register map for transfer over i2c
+	buf[0]=lo1n-1;
+	buf[1]=lo1a | (sel<<4);
+	buf[2]=0x86; // LOGC
+	buf[3]=0x0f; //reserved
+	buf[4]=0x1f;
+	buf[5]=(lo2n-1) | (lo2a<<5);
+	if(rfin >400*1000*1000)
+		buf[6]=0xe4;
+	else
+		buf[6]=0xf4; // set PKEN per rev 1.2
+	buf[7]=8+xogc;
+	buf[8]=0xc3; //reserved
+	buf[9]=0x4e; //reserved
+	buf[10]=0xec; //reserved
+	buf[11]=(lo2num&0xff);
+	buf[12]=(lo2num>>8) |0x80; // Lo2RST
+
+	return 0;
+}
+
+static int mt2032_check_lo_lock(struct dvb_frontend *fe)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	int try,lock=0;
+	unsigned char buf[2];
+
+	for(try=0;try<10;try++) {
+		buf[0]=0x0e;
+		tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
+		tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
+		tuner_dbg("mt2032 Reg.E=0x%02x\n",buf[0]);
+		lock=buf[0] &0x06;
+
+		if (lock==6)
+			break;
+
+		tuner_dbg("mt2032: pll wait 1ms for lock (0x%2x)\n",buf[0]);
+		udelay(1000);
+	}
+	return lock;
+}
+
+static int mt2032_optimize_vco(struct dvb_frontend *fe,int sel,int lock)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	unsigned char buf[2];
+	int tad1;
+
+	buf[0]=0x0f;
+	tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
+	tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
+	tuner_dbg("mt2032 Reg.F=0x%02x\n",buf[0]);
+	tad1=buf[0]&0x07;
+
+	if(tad1 ==0) return lock;
+	if(tad1 ==1) return lock;
+
+	if(tad1==2) {
+		if(sel==0)
+			return lock;
+		else sel--;
+	}
+	else {
+		if(sel<4)
+			sel++;
+		else
+			return lock;
+	}
+
+	tuner_dbg("mt2032 optimize_vco: sel=%d\n",sel);
+
+	buf[0]=0x0f;
+	buf[1]=sel;
+	tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
+	lock=mt2032_check_lo_lock(fe);
+	return lock;
+}
+
+
+static void mt2032_set_if_freq(struct dvb_frontend *fe, unsigned int rfin,
+			       unsigned int if1, unsigned int if2,
+			       unsigned int from, unsigned int to)
+{
+	unsigned char buf[21];
+	int lint_try,ret,sel,lock=0;
+	struct microtune_priv *priv = fe->tuner_priv;
+
+	tuner_dbg("mt2032_set_if_freq rfin=%d if1=%d if2=%d from=%d to=%d\n",
+		  rfin,if1,if2,from,to);
+
+	buf[0]=0;
+	ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
+	tuner_i2c_xfer_recv(&priv->i2c_props,buf,21);
+
+	buf[0]=0;
+	ret=mt2032_compute_freq(fe,rfin,if1,if2,from,to,&buf[1],&sel,priv->xogc);
+	if (ret<0)
+		return;
+
+	// send only the relevant registers per Rev. 1.2
+	buf[0]=0;
+	ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,4);
+	buf[5]=5;
+	ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+5,4);
+	buf[11]=11;
+	ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+11,3);
+	if(ret!=3)
+		tuner_warn("i2c i/o error: rc == %d (should be 3)\n",ret);
+
+	// wait for PLLs to lock (per manual), retry LINT if not.
+	for(lint_try=0; lint_try<2; lint_try++) {
+		lock=mt2032_check_lo_lock(fe);
+
+		if(optimize_vco)
+			lock=mt2032_optimize_vco(fe,sel,lock);
+		if(lock==6) break;
+
+		tuner_dbg("mt2032: re-init PLLs by LINT\n");
+		buf[0]=7;
+		buf[1]=0x80 +8+priv->xogc; // set LINT to re-init PLLs
+		tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
+		mdelay(10);
+		buf[1]=8+priv->xogc;
+		tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
+	}
+
+	if (lock!=6)
+		tuner_warn("MT2032 Fatal Error: PLLs didn't lock.\n");
+
+	buf[0]=2;
+	buf[1]=0x20; // LOGC for optimal phase noise
+	ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
+	if (ret!=2)
+		tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret);
+}
+
+
+static int mt2032_set_tv_freq(struct dvb_frontend *fe,
+			      struct analog_parameters *params)
+{
+	int if2,from,to;
+
+	// signal bandwidth and picture carrier
+	if (params->std & V4L2_STD_525_60) {
+		// NTSC
+		from = 40750*1000;
+		to   = 46750*1000;
+		if2  = 45750*1000;
+	} else {
+		// PAL
+		from = 32900*1000;
+		to   = 39900*1000;
+		if2  = 38900*1000;
+	}
+
+	mt2032_set_if_freq(fe, params->frequency*62500,
+			   1090*1000*1000, if2, from, to);
+
+	return 0;
+}
+
+static int mt2032_set_radio_freq(struct dvb_frontend *fe,
+				 struct analog_parameters *params)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	int if2;
+
+	if (params->std & V4L2_STD_525_60) {
+		tuner_dbg("pinnacle ntsc\n");
+		if2 = 41300 * 1000;
+	} else {
+		tuner_dbg("pinnacle pal\n");
+		if2 = 33300 * 1000;
+	}
+
+	// per Manual for FM tuning: first if center freq. 1085 MHz
+	mt2032_set_if_freq(fe, params->frequency * 125 / 2,
+			   1085*1000*1000,if2,if2,if2);
+
+	return 0;
+}
+
+static int mt2032_set_params(struct dvb_frontend *fe,
+			     struct analog_parameters *params)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	int ret = -EINVAL;
+
+	switch (params->mode) {
+	case V4L2_TUNER_RADIO:
+		ret = mt2032_set_radio_freq(fe, params);
+		priv->frequency = params->frequency * 125 / 2;
+		break;
+	case V4L2_TUNER_ANALOG_TV:
+	case V4L2_TUNER_DIGITAL_TV:
+		ret = mt2032_set_tv_freq(fe, params);
+		priv->frequency = params->frequency * 62500;
+		break;
+	}
+
+	return ret;
+}
+
+static struct dvb_tuner_ops mt2032_tuner_ops = {
+	.set_analog_params = mt2032_set_params,
+	.release           = microtune_release,
+	.get_frequency     = microtune_get_frequency,
+};
+
+// Initialization as described in "MT203x Programming Procedures", Rev 1.2, Feb.2001
+static int mt2032_init(struct dvb_frontend *fe)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	unsigned char buf[21];
+	int ret,xogc,xok=0;
+
+	// Initialize Registers per spec.
+	buf[1]=2; // Index to register 2
+	buf[2]=0xff;
+	buf[3]=0x0f;
+	buf[4]=0x1f;
+	ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+1,4);
+
+	buf[5]=6; // Index register 6
+	buf[6]=0xe4;
+	buf[7]=0x8f;
+	buf[8]=0xc3;
+	buf[9]=0x4e;
+	buf[10]=0xec;
+	ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+5,6);
+
+	buf[12]=13;  // Index register 13
+	buf[13]=0x32;
+	ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+12,2);
+
+	// Adjust XOGC (register 7), wait for XOK
+	xogc=7;
+	do {
+		tuner_dbg("mt2032: xogc = 0x%02x\n",xogc&0x07);
+		mdelay(10);
+		buf[0]=0x0e;
+		tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
+		tuner_i2c_xfer_recv(&priv->i2c_props,buf,1);
+		xok=buf[0]&0x01;
+		tuner_dbg("mt2032: xok = 0x%02x\n",xok);
+		if (xok == 1) break;
+
+		xogc--;
+		tuner_dbg("mt2032: xogc = 0x%02x\n",xogc&0x07);
+		if (xogc == 3) {
+			xogc=4; // min. 4 per spec
+			break;
+		}
+		buf[0]=0x07;
+		buf[1]=0x88 + xogc;
+		ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2);
+		if (ret!=2)
+			tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret);
+	} while (xok != 1 );
+	priv->xogc=xogc;
+
+	memcpy(&fe->ops.tuner_ops, &mt2032_tuner_ops, sizeof(struct dvb_tuner_ops));
+
+	return(1);
+}
+
+static void mt2050_set_antenna(struct dvb_frontend *fe, unsigned char antenna)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	unsigned char buf[2];
+
+	buf[0] = 6;
+	buf[1] = antenna ? 0x11 : 0x10;
+	tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
+	tuner_dbg("mt2050: enabled antenna connector %d\n", antenna);
+}
+
+static void mt2050_set_if_freq(struct dvb_frontend *fe,unsigned int freq, unsigned int if2)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	unsigned int if1=1218*1000*1000;
+	unsigned int f_lo1,f_lo2,lo1,lo2,f_lo1_modulo,f_lo2_modulo,num1,num2,div1a,div1b,div2a,div2b;
+	int ret;
+	unsigned char buf[6];
+
+	tuner_dbg("mt2050_set_if_freq freq=%d if1=%d if2=%d\n",
+		  freq,if1,if2);
+
+	f_lo1=freq+if1;
+	f_lo1=(f_lo1/1000000)*1000000;
+
+	f_lo2=f_lo1-freq-if2;
+	f_lo2=(f_lo2/50000)*50000;
+
+	lo1=f_lo1/4000000;
+	lo2=f_lo2/4000000;
+
+	f_lo1_modulo= f_lo1-(lo1*4000000);
+	f_lo2_modulo= f_lo2-(lo2*4000000);
+
+	num1=4*f_lo1_modulo/4000000;
+	num2=4096*(f_lo2_modulo/1000)/4000;
+
+	// todo spurchecks
+
+	div1a=(lo1/12)-1;
+	div1b=lo1-(div1a+1)*12;
+
+	div2a=(lo2/8)-1;
+	div2b=lo2-(div2a+1)*8;
+
+	if (debug > 1) {
+		tuner_dbg("lo1 lo2 = %d %d\n", lo1, lo2);
+		tuner_dbg("num1 num2 div1a div1b div2a div2b= %x %x %x %x %x %x\n",
+			  num1,num2,div1a,div1b,div2a,div2b);
+	}
+
+	buf[0]=1;
+	buf[1]= 4*div1b + num1;
+	if(freq<275*1000*1000) buf[1] = buf[1]|0x80;
+
+	buf[2]=div1a;
+	buf[3]=32*div2b + num2/256;
+	buf[4]=num2-(num2/256)*256;
+	buf[5]=div2a;
+	if(num2!=0) buf[5]=buf[5]|0x40;
+
+	if (debug > 1) {
+		int i;
+		tuner_dbg("bufs is: ");
+		for(i=0;i<6;i++)
+			printk("%x ",buf[i]);
+		printk("\n");
+	}
+
+	ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,6);
+	if (ret!=6)
+		tuner_warn("i2c i/o error: rc == %d (should be 6)\n",ret);
+}
+
+static int mt2050_set_tv_freq(struct dvb_frontend *fe,
+			      struct analog_parameters *params)
+{
+	unsigned int if2;
+
+	if (params->std & V4L2_STD_525_60) {
+		// NTSC
+		if2 = 45750*1000;
+	} else {
+		// PAL
+		if2 = 38900*1000;
+	}
+	if (V4L2_TUNER_DIGITAL_TV == params->mode) {
+		// DVB (pinnacle 300i)
+		if2 = 36150*1000;
+	}
+	mt2050_set_if_freq(fe, params->frequency*62500, if2);
+	mt2050_set_antenna(fe, tv_antenna);
+
+	return 0;
+}
+
+static int mt2050_set_radio_freq(struct dvb_frontend *fe,
+				 struct analog_parameters *params)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	int if2;
+
+	if (params->std & V4L2_STD_525_60) {
+		tuner_dbg("pinnacle ntsc\n");
+		if2 = 41300 * 1000;
+	} else {
+		tuner_dbg("pinnacle pal\n");
+		if2 = 33300 * 1000;
+	}
+
+	mt2050_set_if_freq(fe, params->frequency * 125 / 2, if2);
+	mt2050_set_antenna(fe, radio_antenna);
+
+	return 0;
+}
+
+static int mt2050_set_params(struct dvb_frontend *fe,
+			     struct analog_parameters *params)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	int ret = -EINVAL;
+
+	switch (params->mode) {
+	case V4L2_TUNER_RADIO:
+		ret = mt2050_set_radio_freq(fe, params);
+		priv->frequency = params->frequency * 125 / 2;
+		break;
+	case V4L2_TUNER_ANALOG_TV:
+	case V4L2_TUNER_DIGITAL_TV:
+		ret = mt2050_set_tv_freq(fe, params);
+		priv->frequency = params->frequency * 62500;
+		break;
+	}
+
+	return ret;
+}
+
+static struct dvb_tuner_ops mt2050_tuner_ops = {
+	.set_analog_params = mt2050_set_params,
+	.release           = microtune_release,
+	.get_frequency     = microtune_get_frequency,
+};
+
+static int mt2050_init(struct dvb_frontend *fe)
+{
+	struct microtune_priv *priv = fe->tuner_priv;
+	unsigned char buf[2];
+
+	buf[0] = 6;
+	buf[1] = 0x10;
+	tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); /* power */
+
+	buf[0] = 0x0f;
+	buf[1] = 0x0f;
+	tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); /* m1lo */
+
+	buf[0] = 0x0d;
+	tuner_i2c_xfer_send(&priv->i2c_props, buf, 1);
+	tuner_i2c_xfer_recv(&priv->i2c_props, buf, 1);
+
+	tuner_dbg("mt2050: sro is %x\n", buf[0]);
+
+	memcpy(&fe->ops.tuner_ops, &mt2050_tuner_ops, sizeof(struct dvb_tuner_ops));
+
+	return 0;
+}
+
+struct dvb_frontend *microtune_attach(struct dvb_frontend *fe,
+				      struct i2c_adapter* i2c_adap,
+				      u8 i2c_addr)
+{
+	struct microtune_priv *priv = NULL;
+	char *name;
+	unsigned char buf[21];
+	int company_code;
+
+	priv = kzalloc(sizeof(struct microtune_priv), GFP_KERNEL);
+	if (priv == NULL)
+		return NULL;
+	fe->tuner_priv = priv;
+
+	priv->i2c_props.addr = i2c_addr;
+	priv->i2c_props.adap = i2c_adap;
+	priv->i2c_props.name = "mt20xx";
+
+	//priv->radio_if2 = 10700 * 1000;	/* 10.7MHz - FM radio */
+
+	memset(buf,0,sizeof(buf));
+
+	name = "unknown";
+
+	tuner_i2c_xfer_send(&priv->i2c_props,buf,1);
+	tuner_i2c_xfer_recv(&priv->i2c_props,buf,21);
+	if (debug) {
+		int i;
+		tuner_dbg("MT20xx hexdump:");
+		for(i=0;i<21;i++) {
+			printk(" %02x",buf[i]);
+			if(((i+1)%8)==0) printk(" ");
+		}
+		printk("\n");
+	}
+	company_code = buf[0x11] << 8 | buf[0x12];
+	tuner_info("microtune: companycode=%04x part=%02x rev=%02x\n",
+		   company_code,buf[0x13],buf[0x14]);
+
+
+	if (buf[0x13] < ARRAY_SIZE(microtune_part) &&
+	    NULL != microtune_part[buf[0x13]])
+		name = microtune_part[buf[0x13]];
+	switch (buf[0x13]) {
+	case MT2032:
+		mt2032_init(fe);
+		break;
+	case MT2050:
+		mt2050_init(fe);
+		break;
+	default:
+		tuner_info("microtune %s found, not (yet?) supported, sorry :-/\n",
+			   name);
+		return NULL;
+	}
+
+	strlcpy(fe->ops.tuner_ops.info.name, name,
+		sizeof(fe->ops.tuner_ops.info.name));
+	tuner_info("microtune %s found, OK\n",name);
+	return fe;
+}
+
+EXPORT_SYMBOL_GPL(microtune_attach);
+
+MODULE_DESCRIPTION("Microtune 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:
+ */