From a1e46dd7960d90441d7adeb6109ca7426c2e728e Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Wed, 1 Apr 2009 00:01:04 +0000
Subject: radio-si470x: fix possible bug with freeing memory order

From: Alexey Klimov <klimov.linux@gmail.com>

Patch fixes cleanup procedure in si470x_usb_driver_probe. Add new label
err_video and change order of freeing memory.

Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 linux/drivers/media/radio/radio-si470x.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'linux/drivers')

diff --git a/linux/drivers/media/radio/radio-si470x.c b/linux/drivers/media/radio/radio-si470x.c
index 599fc0dcf..b4d6641b4 100644
--- a/linux/drivers/media/radio/radio-si470x.c
+++ b/linux/drivers/media/radio/radio-si470x.c
@@ -1687,7 +1687,7 @@ static int si470x_usb_driver_probe(struct usb_interface *intf,
 	/* show some infos about the specific si470x device */
 	if (si470x_get_all_registers(radio) < 0) {
 		retval = -EIO;
-		goto err_all;
+		goto err_video;
 	}
 	printk(KERN_INFO DRIVER_NAME ": DeviceID=0x%4.4hx ChipID=0x%4.4hx\n",
 			radio->registers[DEVICEID], radio->registers[CHIPID]);
@@ -1695,7 +1695,7 @@ static int si470x_usb_driver_probe(struct usb_interface *intf,
 	/* get software and hardware versions */
 	if (si470x_get_scratch_page_versions(radio) < 0) {
 		retval = -EIO;
-		goto err_all;
+		goto err_video;
 	}
 	printk(KERN_INFO DRIVER_NAME
 			": software version %d, hardware version %d\n",
@@ -1728,7 +1728,7 @@ static int si470x_usb_driver_probe(struct usb_interface *intf,
 	radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL);
 	if (!radio->buffer) {
 		retval = -EIO;
-		goto err_all;
+		goto err_video;
 	}
 
 	/* rds buffer configuration */
@@ -1750,8 +1750,9 @@ static int si470x_usb_driver_probe(struct usb_interface *intf,
 
 	return 0;
 err_all:
-	video_device_release(radio->videodev);
 	kfree(radio->buffer);
+err_video:
+	video_device_release(radio->videodev);
 err_radio:
 	kfree(radio);
 err_initial:
-- 
cgit v1.2.3


From cc563328c3991caed024da39ebb98e68f9b64dde Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Tue, 31 Mar 2009 22:01:51 +0000
Subject: cx88: Add support for stereo and sap detection for A2

From: Marton Balint <cus@fazekas.hu>

The patch implements reliable stereo and sap detection for the A2 sound
standard.  This is achieved by processing the samples of the audio RDS fifo of
the cx2388x chip. A2M, EIAJ and BTSC stereo/sap detection is also possible with
this new approach, but it's not implemented yet. Stereo detection when alsa
handles the sound also does not work yet.

Priority: normal

Signed-off-by: Marton Balint <cus@fazekas.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 linux/drivers/media/video/cx88/Makefile       |  2 +-
 linux/drivers/media/video/cx88/cx88-core.c    | 26 ++++++++--
 linux/drivers/media/video/cx88/cx88-tvaudio.c | 75 ++++++++++++++++-----------
 linux/drivers/media/video/cx88/cx88.h         | 10 ++++
 4 files changed, 77 insertions(+), 36 deletions(-)

(limited to 'linux/drivers')

diff --git a/linux/drivers/media/video/cx88/Makefile b/linux/drivers/media/video/cx88/Makefile
index b06b1275a..5b7e26761 100644
--- a/linux/drivers/media/video/cx88/Makefile
+++ b/linux/drivers/media/video/cx88/Makefile
@@ -1,5 +1,5 @@
 cx88xx-objs	:= cx88-cards.o cx88-core.o cx88-i2c.o cx88-tvaudio.o \
-		   cx88-input.o
+		   cx88-dsp.o cx88-input.o
 cx8800-objs	:= cx88-video.o cx88-vbi.o
 cx8802-objs	:= cx88-mpeg.o
 
diff --git a/linux/drivers/media/video/cx88/cx88-core.c b/linux/drivers/media/video/cx88/cx88-core.c
index 71dccf6af..39cbd152a 100644
--- a/linux/drivers/media/video/cx88/cx88-core.c
+++ b/linux/drivers/media/video/cx88/cx88-core.c
@@ -232,7 +232,7 @@ cx88_free_buffer(struct videobuf_queue *q, struct cx88_buffer *buf)
  * can use the whole SDRAM for the DMA fifos.  To simplify things, we
  * use a static memory layout.  That surely will waste memory in case
  * we don't use all DMA channels at the same time (which will be the
- * case most of the time).  But that still gives us enougth FIFO space
+ * case most of the time).  But that still gives us enough FIFO space
  * to be able to deal with insane long pci latencies ...
  *
  * FIFO space allocations:
@@ -242,6 +242,7 @@ cx88_free_buffer(struct videobuf_queue *q, struct cx88_buffer *buf)
  *    channel  24    (vbi)      -  4.0k
  *    channels 25+26 (audio)    -  4.0k
  *    channel  28    (mpeg)     -  4.0k
+ *    channel  27    (audio rds)-  3.0k
  *    TOTAL                     = 29.0k
  *
  * Every channel has 160 bytes control data (64 bytes instruction
@@ -338,6 +339,18 @@ struct sram_channel cx88_sram_channels[] = {
 		.cnt1_reg   = MO_DMA28_CNT1,
 		.cnt2_reg   = MO_DMA28_CNT2,
 	},
+	[SRAM_CH27] = {
+		.name       = "audio rds",
+		.cmds_start = 0x1801C0,
+		.ctrl_start = 0x180860,
+		.cdt        = 0x180860 + 64,
+		.fifo_start = 0x187400,
+		.fifo_size  = 0x000C00,
+		.ptr1_reg   = MO_DMA27_PTR1,
+		.ptr2_reg   = MO_DMA27_PTR2,
+		.cnt1_reg   = MO_DMA27_CNT1,
+		.cnt2_reg   = MO_DMA27_CNT2,
+	},
 };
 
 int cx88_sram_channel_setup(struct cx88_core *core,
@@ -623,6 +636,7 @@ int cx88_reset(struct cx88_core *core)
 	cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], 128, 0);
 	cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], 128, 0);
 	cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28], 188*4, 0);
+	cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH27], 128, 0);
 
 	/* misc init ... */
 	cx_write(MO_INPUT_FORMAT, ((1 << 13) |   // agc enable
@@ -821,6 +835,8 @@ int cx88_start_audio_dma(struct cx88_core *core)
 	/* constant 128 made buzz in analog Nicam-stereo for bigger fifo_size */
 	int bpl = cx88_sram_channels[SRAM_CH25].fifo_size/4;
 
+	int rds_bpl = cx88_sram_channels[SRAM_CH27].fifo_size/AUD_RDS_LINES;
+
 	/* If downstream RISC is enabled, bail out; ALSA is managing DMA */
 	if (cx_read(MO_AUD_DMACNTRL) & 0x10)
 		return 0;
@@ -828,12 +844,14 @@ int cx88_start_audio_dma(struct cx88_core *core)
 	/* setup fifo + format */
 	cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], bpl, 0);
 	cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], bpl, 0);
+	cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH27],
+				rds_bpl, 0);
 
 	cx_write(MO_AUDD_LNGTH, bpl); /* fifo bpl size */
-	cx_write(MO_AUDR_LNGTH, bpl); /* fifo bpl size */
+	cx_write(MO_AUDR_LNGTH, rds_bpl); /* fifo bpl size */
 
-	/* start dma */
-	cx_write(MO_AUD_DMACNTRL, 0x0003); /* Up and Down fifo enable */
+	/* enable Up, Down and Audio RDS fifo */
+	cx_write(MO_AUD_DMACNTRL, 0x0007);
 
 	return 0;
 }
diff --git a/linux/drivers/media/video/cx88/cx88-tvaudio.c b/linux/drivers/media/video/cx88/cx88-tvaudio.c
index 0039354cf..71a127dce 100644
--- a/linux/drivers/media/video/cx88/cx88-tvaudio.c
+++ b/linux/drivers/media/video/cx88/cx88-tvaudio.c
@@ -167,6 +167,8 @@ static void set_audio_finish(struct cx88_core *core, u32 ctl)
 	/* unmute */
 	volume = cx_sread(SHADOW_AUD_VOL_CTL);
 	cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
+
+	core->last_change = jiffies;
 }
 
 /* ----------------------------------------------------------- */
@@ -749,6 +751,7 @@ void cx88_set_tvaudio(struct cx88_core *core)
 		break;
 	case WW_BG:
 	case WW_DK:
+	case WW_M:
 	case WW_I:
 	case WW_L:
 		/* prepare all dsp registers */
@@ -760,6 +763,7 @@ void cx88_set_tvaudio(struct cx88_core *core)
 		if (0 == cx88_detect_nicam(core)) {
 			/* fall back to fm / am mono */
 			set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
+			core->audiomode_current = V4L2_TUNER_MODE_MONO;
 			core->use_nicam = 0;
 		} else {
 			core->use_nicam = 1;
@@ -791,6 +795,7 @@ void cx88_set_tvaudio(struct cx88_core *core)
 void cx88_newstation(struct cx88_core *core)
 {
 	core->audiomode_manual = UNSET;
+	core->last_change = jiffies;
 }
 
 void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
@@ -809,44 +814,42 @@ void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
 			aud_ctl_names[cx_read(AUD_CTL) & 63]);
 	core->astat = reg;
 
-/* TODO
-	Reading from AUD_STATUS is not enough
-	for auto-detecting sap/dual-fm/nicam.
-	Add some code here later.
-*/
-
-# if 0
 	t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP |
 	    V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
-	t->rxsubchans = V4L2_TUNER_SUB_MONO;
+	t->rxsubchans = UNSET;
 	t->audmode = V4L2_TUNER_MODE_MONO;
 
+	switch (mode) {
+	case 0:
+		t->audmode = V4L2_TUNER_MODE_STEREO;
+		break;
+	case 1:
+		t->audmode = V4L2_TUNER_MODE_LANG2;
+		break;
+	case 2:
+		t->audmode = V4L2_TUNER_MODE_MONO;
+		break;
+	case 3:
+		t->audmode = V4L2_TUNER_MODE_SAP;
+		break;
+	}
+
 	switch (core->tvaudio) {
 	case WW_BTSC:
-		t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP;
-		t->rxsubchans = V4L2_TUNER_SUB_STEREO;
-		if (1 == pilot) {
-			/* SAP */
-			t->rxsubchans |= V4L2_TUNER_SUB_SAP;
-		}
-		break;
-	case WW_A2_BG:
-	case WW_A2_DK:
-	case WW_A2_M:
-		if (1 == pilot) {
-			/* stereo */
-			t->rxsubchans =
-			    V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
-			if (0 == mode)
-				t->audmode = V4L2_TUNER_MODE_STEREO;
-		}
-		if (2 == pilot) {
-			/* dual language -- FIXME */
-			t->rxsubchans =
-			    V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
-			t->audmode = V4L2_TUNER_MODE_LANG1;
+	case WW_BG:
+	case WW_DK:
+	case WW_M:
+	case WW_EIAJ:
+		if (!core->use_nicam) {
+			t->rxsubchans = cx88_dsp_detect_stereo_sap(core);
+			break;
 		}
 		break;
+# if 0
+	/* TODO
+		Reading from AUD_STATUS is not enough
+		for auto-detecting sap/dual-fm/nicam.
+	*/
 	case WW_NICAM_BGDKL:
 		if (0 == mode) {
 			t->audmode = V4L2_TUNER_MODE_STEREO;
@@ -859,11 +862,20 @@ void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
 			t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
 		}
 		break;
+# endif
 	default:
 		/* nothing */
 		break;
 	}
-# endif
+
+	/* If software stereo detection is not supported... */
+	if (UNSET == t->rxsubchans) {
+		t->rxsubchans = V4L2_TUNER_SUB_MONO;
+		/* If the hardware itself detected stereo, also return
+		   stereo as an available subchannel */
+		if (V4L2_TUNER_MODE_STEREO == t->audmode)
+			t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
+	}
 	return;
 }
 
@@ -900,6 +912,7 @@ void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
 		break;
 	case WW_BG:
 	case WW_DK:
+	case WW_M:
 	case WW_I:
 	case WW_L:
 		if (1 == core->use_nicam) {
diff --git a/linux/drivers/media/video/cx88/cx88.h b/linux/drivers/media/video/cx88/cx88.h
index a34f6ee0c..1cf6900e0 100644
--- a/linux/drivers/media/video/cx88/cx88.h
+++ b/linux/drivers/media/video/cx88/cx88.h
@@ -66,6 +66,8 @@
 #define VBI_LINE_COUNT              17
 #define VBI_LINE_LENGTH           2048
 
+#define AUD_RDS_LINES		     4
+
 /* need "shadow" registers for some write-only ones ... */
 #define SHADOW_AUD_VOL_CTL           1
 #define SHADOW_AUD_BAL_CTL           2
@@ -133,6 +135,7 @@ struct cx88_ctrl {
 #define SRAM_CH25 4   /* audio */
 #define SRAM_CH26 5
 #define SRAM_CH28 6   /* mpeg */
+#define SRAM_CH27 7   /* audio rds */
 /* more */
 
 struct sram_channel {
@@ -354,6 +357,7 @@ struct cx88_core {
 	u32                        input;
 	u32                        astat;
 	u32			   use_nicam;
+	unsigned long		   last_change;
 
 	/* IR remote control state */
 	struct cx88_IR             *ir;
@@ -673,6 +677,7 @@ extern void cx88_setup_xc3028(struct cx88_core *core, struct xc2028_ctrl *ctl);
 #define WW_I2SPT	 8
 #define WW_FM		 9
 #define WW_I2SADC	 10
+#define WW_M		 11
 
 void cx88_set_tvaudio(struct cx88_core *core);
 void cx88_newstation(struct cx88_core *core);
@@ -685,6 +690,11 @@ int cx8802_unregister_driver(struct cx8802_driver *drv);
 struct cx8802_dev *cx8802_get_device(int minor);
 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype);
 
+/* ----------------------------------------------------------- */
+/* cx88-dsp.c                                                  */
+
+s32 cx88_dsp_detect_stereo_sap(struct cx88_core *core);
+
 /* ----------------------------------------------------------- */
 /* cx88-input.c                                                */
 
-- 
cgit v1.2.3


From 9eded14b2cc5dfbe4c50e5b31bff3bea4c177a28 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Tue, 31 Mar 2009 22:01:52 +0000
Subject: cx88: audio thread: if stereo detection is hw supported don't do it
 manually

From: Marton Balint <cus@fazekas.hu>

The sole purpose of the audio thread is to detect if stereo transmission is
available, and if it is, then switch to stereo mode (and switch back, if it's
no longer available). This manual autodetection is useful for some audio
standards (e.g. A2) where cx88_get_stereo CAN detect stereo sound, but the
cx2388x chip CANNOT auto-detect stereo sound.

However, for other audio standards, the cx2388x chip CAN auto-detect the stereo
sound, so the manual autodetection in the audio thread is not needed. In fact,
it can cause serious problems because for some of these audio standards,
cx88_get_stereo CANNOT detect the presence of stereo sound.  Besides that, if
the hardware automatically detects stereo/mono sound, you cannot set
core->audiomode_current to the real current audio mode on channel change.

With this patch, the manual autodetection is only used if audiomode_current is
known after a channel change (because of the initial mono mode), and
hardware-based stereo autodetecion is not applicable for the current audio
standard.

Priority: normal

Signed-off-by: Marton Balint <cus@fazekas.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 linux/drivers/media/video/cx88/cx88-tvaudio.c | 51 +++++++++++++++++----------
 1 file changed, 33 insertions(+), 18 deletions(-)

(limited to 'linux/drivers')

diff --git a/linux/drivers/media/video/cx88/cx88-tvaudio.c b/linux/drivers/media/video/cx88/cx88-tvaudio.c
index 71a127dce..4a8b6bba5 100644
--- a/linux/drivers/media/video/cx88/cx88-tvaudio.c
+++ b/linux/drivers/media/video/cx88/cx88-tvaudio.c
@@ -998,24 +998,39 @@ int cx88_audio_thread(void *data)
 			break;
 		try_to_freeze();
 
-		/* just monitor the audio status for now ... */
-		memset(&t, 0, sizeof(t));
-		cx88_get_stereo(core, &t);
-
-		if (UNSET != core->audiomode_manual)
-			/* manually set, don't do anything. */
-			continue;
-
-		/* monitor signal */
-		if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
-			mode = V4L2_TUNER_MODE_STEREO;
-		else
-			mode = V4L2_TUNER_MODE_MONO;
-		if (mode == core->audiomode_current)
-			continue;
-
-		/* automatically switch to best available mode */
-		cx88_set_stereo(core, mode, 0);
+		switch (core->tvaudio) {
+		case WW_BG:
+		case WW_DK:
+		case WW_M:
+		case WW_I:
+		case WW_L:
+			if (core->use_nicam)
+				goto hw_autodetect;
+
+			/* just monitor the audio status for now ... */
+			memset(&t, 0, sizeof(t));
+			cx88_get_stereo(core, &t);
+
+			if (UNSET != core->audiomode_manual)
+				/* manually set, don't do anything. */
+				continue;
+
+			/* monitor signal and set stereo if available */
+			if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
+				mode = V4L2_TUNER_MODE_STEREO;
+			else
+				mode = V4L2_TUNER_MODE_MONO;
+			if (mode == core->audiomode_current)
+				continue;
+			/* automatically switch to best available mode */
+			cx88_set_stereo(core, mode, 0);
+			break;
+		default:
+hw_autodetect:
+			/* stereo autodetection is supported by hardware so
+			   we don't need to do it manually. Do nothing. */
+			break;
+		}
 	}
 
 	dprintk("cx88: tvaudio thread exiting\n");
-- 
cgit v1.2.3


From 45c26066f501ed98fc14f3614ff37ddc4f480894 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Tue, 31 Mar 2009 22:01:53 +0000
Subject: cx88: avoid reprogramming every audio register on A2 stereo/mono
 change

From: Marton Balint <cus@fazekas.hu>

This patch changes cx88_set_stereo to avoid resetting all of the audio
registers on stereo/mono change if the audio standard is A2, and set
only the AUD_CTL register. The benefit of this method is that it
eliminates the annoying clicking noise on setting the audio mode to
stereo or mono.

The driver had used the same method 1.5 years ago (and for FM radio it
still does), but a pretty big cleanup commit changed it to the
"complete audio reset" method, although the reason for this move was
not clear. (If somebody knows why it was necessary, please let me
know!)

The original commit: http://linuxtv.org/hg/v4l-dvb/rev/ffe313541d7d

Priority: normal

Signed-off-by: Marton Balint <cus@fazekas.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 linux/drivers/media/video/cx88/cx88-tvaudio.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

(limited to 'linux/drivers')

diff --git a/linux/drivers/media/video/cx88/cx88-tvaudio.c b/linux/drivers/media/video/cx88/cx88-tvaudio.c
index 4a8b6bba5..76d42b3d8 100644
--- a/linux/drivers/media/video/cx88/cx88-tvaudio.c
+++ b/linux/drivers/media/video/cx88/cx88-tvaudio.c
@@ -938,20 +938,18 @@ void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
 				set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
 			} else {
 				/* TODO: Add A2 autodection */
+				mask = 0x3f;
 				switch (mode) {
 				case V4L2_TUNER_MODE_MONO:
 				case V4L2_TUNER_MODE_LANG1:
-					set_audio_standard_A2(core,
-							      EN_A2_FORCE_MONO1);
+					ctl = EN_A2_FORCE_MONO1;
 					break;
 				case V4L2_TUNER_MODE_LANG2:
-					set_audio_standard_A2(core,
-							      EN_A2_FORCE_MONO2);
+					ctl = EN_A2_FORCE_MONO2;
 					break;
 				case V4L2_TUNER_MODE_STEREO:
 				case V4L2_TUNER_MODE_LANG1_LANG2:
-					set_audio_standard_A2(core,
-							      EN_A2_FORCE_STEREO);
+					ctl = EN_A2_FORCE_STEREO;
 					break;
 				}
 			}
-- 
cgit v1.2.3


From 7311d91726777ee42703fdf54cc73f851fb2e184 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Mon, 6 Apr 2009 09:26:24 -0300
Subject: Add a missing cx88-dsp file

From: Mauro Carvalho Chehab <mchehab@redhat.com>

This file were supposed to be included on changeset 11394:0eba67ef42ba.
However, it weren't. Sorry for the mess. I'll merge this one with the
original changeset at -git.

This is the original description that also applies to this file:

  - cx88: Add support for stereo and sap detection for A2

  - From: Marton Balint <cus@fazekas.hu>

The patch implements reliable stereo and sap detection for the A2 sound
standard.  This is achieved by processing the samples of the audio RDS fifo of
the cx2388x chip. A2M, EIAJ and BTSC stereo/sap detection is also possible with
this new approach, but it's not implemented yet. Stereo detection when alsa
handles the sound also does not work yet.

Priority: normal

Signed-off-by: Marton Balint <cus@fazekas.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 linux/drivers/media/video/cx88/cx88-dsp.c | 304 ++++++++++++++++++++++++++++++
 1 file changed, 304 insertions(+)
 create mode 100644 linux/drivers/media/video/cx88/cx88-dsp.c

(limited to 'linux/drivers')

diff --git a/linux/drivers/media/video/cx88/cx88-dsp.c b/linux/drivers/media/video/cx88/cx88-dsp.c
new file mode 100644
index 000000000..da2b306c0
--- /dev/null
+++ b/linux/drivers/media/video/cx88/cx88-dsp.c
@@ -0,0 +1,304 @@
+/*
+ *
+ *  Stereo and SAP detection for cx88
+ *
+ *  Copyright (c) 2009 Marton Balint <cus@fazekas.hu>
+ *
+ *  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/kernel.h>
+#include <linux/module.h>
+#include <linux/jiffies.h>
+
+#include "cx88.h"
+#include "cx88-reg.h"
+
+#define INT_PI			((s32)(3.141592653589 * 32768.0))
+
+#define compat_remainder(a, b) \
+	 ((float)(((s32)((a)*100))%((s32)((b)*100)))/100.0)
+
+#define baseband_freq(carrier, srate, tone) ((s32)( \
+	 (compat_remainder(carrier + tone, srate)) / srate * 2 * INT_PI))
+
+/* We calculate the baseband frequencies of the carrier and the pilot tones
+ * based on the the sampling rate of the audio rds fifo. */
+
+#define FREQ_A2_CARRIER         baseband_freq(54687.5, 2689.36, 0.0)
+#define FREQ_A2_DUAL            baseband_freq(54687.5, 2689.36, 274.1)
+#define FREQ_A2_STEREO          baseband_freq(54687.5, 2689.36, 117.5)
+
+/* The frequencies below are from the reference driver. They probably need
+ * further adjustments, because they are not tested at all. You may even need
+ * to play a bit with the registers of the chip to select the proper signal
+ * for the input of the audio rds fifo, and measure it's sampling rate to
+ * calculate the proper baseband frequencies... */
+
+#define FREQ_A2M_CARRIER	((s32)(2.114516 * 32768.0))
+#define FREQ_A2M_DUAL		((s32)(2.754916 * 32768.0))
+#define FREQ_A2M_STEREO		((s32)(2.462326 * 32768.0))
+
+#define FREQ_EIAJ_CARRIER	((s32)(1.963495 * 32768.0)) /* 5pi/8  */
+#define FREQ_EIAJ_DUAL		((s32)(2.562118 * 32768.0))
+#define FREQ_EIAJ_STEREO	((s32)(2.601053 * 32768.0))
+
+#define FREQ_BTSC_DUAL		((s32)(1.963495 * 32768.0)) /* 5pi/8  */
+#define FREQ_BTSC_DUAL_REF	((s32)(1.374446 * 32768.0)) /* 7pi/16 */
+
+#define FREQ_BTSC_SAP		((s32)(2.471532 * 32768.0))
+#define FREQ_BTSC_SAP_REF	((s32)(1.730072 * 32768.0))
+
+/* The spectrum of the signal should be empty between these frequencies. */
+#define FREQ_NOISE_START	((s32)(0.100000 * 32768.0))
+#define FREQ_NOISE_END		((s32)(1.200000 * 32768.0))
+
+static unsigned int dsp_debug;
+module_param(dsp_debug, int, 0644);
+MODULE_PARM_DESC(dsp_debug, "enable audio dsp debug messages");
+
+#define dprintk(level, fmt, arg...)	if (dsp_debug >= level) \
+	printk(KERN_DEBUG "%s/0: " fmt, core->name , ## arg)
+
+static s32 int_cos(u32 x)
+{
+	u32 t2, t4, t6, t8;
+	s32 ret;
+	u16 period = x / INT_PI;
+	if (period % 2)
+		return -int_cos(x - INT_PI);
+	x = x % INT_PI;
+	if (x > INT_PI/2)
+		return -int_cos(INT_PI/2 - (x % (INT_PI/2)));
+	/* Now x is between 0 and INT_PI/2.
+	 * To calculate cos(x) we use it's Taylor polinom. */
+	t2 = x*x/32768/2;
+	t4 = t2*x/32768*x/32768/3/4;
+	t6 = t4*x/32768*x/32768/5/6;
+	t8 = t6*x/32768*x/32768/7/8;
+	ret = 32768-t2+t4-t6+t8;
+	return ret;
+}
+
+static u32 int_goertzel(s16 x[], u32 N, u32 freq)
+{
+	/* We use the Goertzel algorithm to determine the power of the
+	 * given frequency in the signal */
+	s32 s_prev = 0;
+	s32 s_prev2 = 0;
+	s32 coeff = 2*int_cos(freq);
+	u32 i;
+	for (i = 0; i < N; i++) {
+		s32 s = x[i] + ((s64)coeff*s_prev/32768) - s_prev2;
+		s_prev2 = s_prev;
+		s_prev = s;
+	}
+	return (u32)(((s64)s_prev2*s_prev2 + (s64)s_prev*s_prev -
+		      (s64)coeff*s_prev2*s_prev/32768)/N/N);
+}
+
+static u32 freq_magnitude(s16 x[], u32 N, u32 freq)
+{
+	u32 sum = int_goertzel(x, N, freq);
+	return (u32)int_sqrt(sum);
+}
+
+static u32 noise_magnitude(s16 x[], u32 N, u32 freq_start, u32 freq_end)
+{
+	int i;
+	u32 sum = 0;
+	u32 freq_step;
+	int samples = 5;
+
+	if (N > 192) {
+		/* The last 192 samples are enough for noise detection */
+		x += (N-192);
+		N = 192;
+	}
+
+	freq_step = (freq_end - freq_start) / (samples - 1);
+
+	for (i = 0; i < samples; i++) {
+		sum += int_goertzel(x, N, freq_start);
+		freq_start += freq_step;
+	}
+
+	return (u32)int_sqrt(sum / samples);
+}
+
+static s32 detect_a2_a2m_eiaj(struct cx88_core *core, s16 x[], u32 N)
+{
+	s32 carrier, stereo, dual, noise;
+	s32 carrier_freq, stereo_freq, dual_freq;
+	s32 ret;
+
+	switch (core->tvaudio) {
+	case WW_BG:
+	case WW_DK:
+		carrier_freq = FREQ_A2_CARRIER;
+		stereo_freq = FREQ_A2_STEREO;
+		dual_freq = FREQ_A2_DUAL;
+		break;
+	case WW_M:
+		carrier_freq = FREQ_A2M_CARRIER;
+		stereo_freq = FREQ_A2M_STEREO;
+		dual_freq = FREQ_A2M_DUAL;
+		break;
+	case WW_EIAJ:
+		carrier_freq = FREQ_EIAJ_CARRIER;
+		stereo_freq = FREQ_EIAJ_STEREO;
+		dual_freq = FREQ_EIAJ_DUAL;
+		break;
+	default:
+		printk(KERN_WARNING "%s/0: unsupported audio mode %d for %s\n",
+		       core->name, core->tvaudio, __func__);
+		return UNSET;
+	}
+
+	carrier = freq_magnitude(x, N, carrier_freq);
+	stereo  = freq_magnitude(x, N, stereo_freq);
+	dual    = freq_magnitude(x, N, dual_freq);
+	noise   = noise_magnitude(x, N, FREQ_NOISE_START, FREQ_NOISE_END);
+
+	dprintk(1, "detect a2/a2m/eiaj: carrier=%d, stereo=%d, dual=%d, "
+		   "noise=%d\n", carrier, stereo, dual, noise);
+
+	if (stereo > dual)
+		ret = V4L2_TUNER_SUB_STEREO;
+	else
+		ret = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
+
+	if (core->tvaudio == WW_EIAJ) {
+		/* EIAJ checks may need adjustments */
+		if ((carrier > max(stereo, dual)*2) &&
+		    (carrier < max(stereo, dual)*6) &&
+		    (carrier > 20 && carrier < 200) &&
+		    (max(stereo, dual) > min(stereo, dual))) {
+			/* For EIAJ the carrier is always present,
+			   so we probably don't need noise detection */
+			return ret;
+		}
+	} else {
+		if ((carrier > max(stereo, dual)*2) &&
+		    (carrier < max(stereo, dual)*8) &&
+		    (carrier > 20 && carrier < 200) &&
+		    (noise < 10) &&
+		    (max(stereo, dual) > min(stereo, dual)*2)) {
+			return ret;
+		}
+	}
+	return V4L2_TUNER_SUB_MONO;
+}
+
+static s32 detect_btsc(struct cx88_core *core, s16 x[], u32 N)
+{
+	s32 sap_ref = freq_magnitude(x, N, FREQ_BTSC_SAP_REF);
+	s32 sap = freq_magnitude(x, N, FREQ_BTSC_SAP);
+	s32 dual_ref = freq_magnitude(x, N, FREQ_BTSC_DUAL_REF);
+	s32 dual = freq_magnitude(x, N, FREQ_BTSC_DUAL);
+	dprintk(1, "detect btsc: dual_ref=%d, dual=%d, sap_ref=%d, sap=%d"
+		   "\n", dual_ref, dual, sap_ref, sap);
+	/* FIXME: Currently not supported */
+	return UNSET;
+}
+
+static s16 *read_rds_samples(struct cx88_core *core, u32 *N)
+{
+	struct sram_channel *srch = &cx88_sram_channels[SRAM_CH27];
+	s16 *samples;
+
+	unsigned int i;
+	unsigned int bpl = srch->fifo_size/AUD_RDS_LINES;
+	unsigned int spl = bpl/4;
+	unsigned int sample_count = spl*(AUD_RDS_LINES-1);
+
+	u32 current_address = cx_read(srch->ptr1_reg);
+	u32 offset = (current_address - srch->fifo_start + bpl);
+
+	dprintk(1, "read RDS samples: current_address=%08x (offset=%08x), "
+		"sample_count=%d, aud_intstat=%08x\n", current_address,
+		current_address - srch->fifo_start, sample_count,
+		cx_read(MO_AUD_INTSTAT));
+
+	samples = kmalloc(sizeof(s16)*sample_count, GFP_KERNEL);
+	if (!samples)
+		return NULL;
+
+	*N = sample_count;
+
+	for (i = 0; i < sample_count; i++)  {
+		offset = offset % (AUD_RDS_LINES*bpl);
+		samples[i] = cx_read(srch->fifo_start + offset);
+		offset += 4;
+	}
+
+	if (dsp_debug >= 2) {
+		dprintk(2, "RDS samples dump: ");
+		for (i = 0; i < sample_count; i++)
+			printk("%hd ", samples[i]);
+		printk(".\n");
+	}
+
+	return samples;
+}
+
+s32 cx88_dsp_detect_stereo_sap(struct cx88_core *core)
+{
+	s16 *samples;
+	u32 N = 0;
+	s32 ret = UNSET;
+
+	/* If audio RDS fifo is disabled, we can't read the samples */
+	if (!(cx_read(MO_AUD_DMACNTRL) & 0x04))
+		return ret;
+	if (!(cx_read(AUD_CTL) & EN_FMRADIO_EN_RDS))
+		return ret;
+
+	/* Wait at least 500 ms after an audio standard change */
+	if (time_before(jiffies, core->last_change + msecs_to_jiffies(500)))
+		return ret;
+
+	samples = read_rds_samples(core, &N);
+
+	if (!samples)
+		return ret;
+
+	switch (core->tvaudio) {
+	case WW_BG:
+	case WW_DK:
+#if 0
+	/* We should not detect these, until they are properly tested... */
+	case WW_EIAJ:
+	case WW_M:
+#endif
+		ret = detect_a2_a2m_eiaj(core, samples, N);
+		break;
+	case WW_BTSC:
+		ret = detect_btsc(core, samples, N);
+		break;
+	}
+
+	kfree(samples);
+
+	if (UNSET != ret)
+		dprintk(1, "stereo/sap detection result:%s%s%s\n",
+			   (ret & V4L2_TUNER_SUB_MONO) ? " mono" : "",
+			   (ret & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
+			   (ret & V4L2_TUNER_SUB_LANG2) ? " dual" : "");
+
+	return ret;
+}
+EXPORT_SYMBOL(cx88_dsp_detect_stereo_sap);
+
-- 
cgit v1.2.3


From f59d306e416b8bfd707417c9a8c1d77e2e87f173 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Wed, 1 Apr 2009 07:35:10 +0000
Subject: Support for Legend Silicon LGS8913/LGS8GL5/LGS8GXX China DMB-TH
 digital demodulator

From: David Wong <davidtlwong@gmail.com>

This patch contains the unified driver for Legend Silicon LGS8913 and
LGS8GL5. It should replace lgs8gl5.c in media/dvb/frontends in the future.

Signed-off-by: David T.L. Wong <davidtlwong@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 linux/drivers/media/dvb/frontends/Kconfig        |   7 +
 linux/drivers/media/dvb/frontends/Makefile       |   1 +
 linux/drivers/media/dvb/frontends/lgs8gxx.c      | 859 +++++++++++++++++++++++
 linux/drivers/media/dvb/frontends/lgs8gxx.h      |  90 +++
 linux/drivers/media/dvb/frontends/lgs8gxx_priv.h |  70 ++
 5 files changed, 1027 insertions(+)
 create mode 100644 linux/drivers/media/dvb/frontends/lgs8gxx.c
 create mode 100644 linux/drivers/media/dvb/frontends/lgs8gxx.h
 create mode 100644 linux/drivers/media/dvb/frontends/lgs8gxx_priv.h

(limited to 'linux/drivers')

diff --git a/linux/drivers/media/dvb/frontends/Kconfig b/linux/drivers/media/dvb/frontends/Kconfig
index a206cee23..578b834bf 100644
--- a/linux/drivers/media/dvb/frontends/Kconfig
+++ b/linux/drivers/media/dvb/frontends/Kconfig
@@ -513,6 +513,13 @@ config DVB_LGS8GL5
 	help
 	  A DMB-TH tuner module. Say Y when you want to support this frontend.
 
+config DVB_LGS8GXX
+	tristate "Legend Silicon LGS8913/LGS8GL5/LGS8GXX DMB-TH demodulator"
+	depends on DVB_CORE && I2C
+	default m if DVB_FE_CUSTOMISE
+	help
+	  A DMB-TH tuner module. Say Y when you want to support this frontend.
+
 comment "Tools to develop new frontends"
 
 config DVB_DUMMY_FE
diff --git a/linux/drivers/media/dvb/frontends/Makefile b/linux/drivers/media/dvb/frontends/Makefile
index 65a336aa1..bc2b00abd 100644
--- a/linux/drivers/media/dvb/frontends/Makefile
+++ b/linux/drivers/media/dvb/frontends/Makefile
@@ -61,6 +61,7 @@ obj-$(CONFIG_DVB_TDA10048) += tda10048.o
 obj-$(CONFIG_DVB_TUNER_CX24113) += cx24113.o
 obj-$(CONFIG_DVB_S5H1411) += s5h1411.o
 obj-$(CONFIG_DVB_LGS8GL5) += lgs8gl5.o
+obj-$(CONFIG_DVB_LGS8GXX) += lgs8gxx.o
 obj-$(CONFIG_DVB_DUMMY_FE) += dvb_dummy_fe.o
 obj-$(CONFIG_DVB_AF9013) += af9013.o
 obj-$(CONFIG_DVB_CX24116) += cx24116.o
diff --git a/linux/drivers/media/dvb/frontends/lgs8gxx.c b/linux/drivers/media/dvb/frontends/lgs8gxx.c
new file mode 100644
index 000000000..1395f3b5b
--- /dev/null
+++ b/linux/drivers/media/dvb/frontends/lgs8gxx.c
@@ -0,0 +1,859 @@
+/*
+ *    Support for Legend Silicon DMB-TH demodulator
+ *    LGS8913, LGS8GL5
+ *    experimental support LGS8G42, LGS8G52
+ *
+ *    Copyright (C) 2007,2008 David T.L. Wong <davidtlwong@gmail.com>
+ *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
+ *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
+ *
+ *    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 <asm/div64.h>
+
+#include "dvb_frontend.h"
+
+#include "lgs8gxx.h"
+#include "lgs8gxx_priv.h"
+
+#define dprintk(args...) \
+	do { \
+		if (debug) \
+			printk(KERN_DEBUG "lgs8gxx: " args); \
+	} while (0)
+
+static int debug;
+static int fake_signal_str;
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+module_param(fake_signal_str, int, 0644);
+MODULE_PARM_DESC(fake_signal_str, "fake signal strength for LGS8913."
+"Signal strength calculation is slow.(default:off).");
+
+/* LGS8GXX internal helper functions */
+
+static int lgs8gxx_write_reg(struct lgs8gxx_state *priv, u8 reg, u8 data)
+{
+	int ret;
+	u8 buf[] = { reg, data };
+	struct i2c_msg msg = { .flags = 0, .buf = buf, .len = 2 };
+
+	msg.addr = priv->config->demod_address;
+	if (reg >= 0xC0)
+		msg.addr += 0x02;
+
+	if (debug >= 2)
+		printk(KERN_DEBUG "%s: reg=0x%02X, data=0x%02X\n",
+			__func__, reg, data);
+
+	ret = i2c_transfer(priv->i2c, &msg, 1);
+
+	if (ret != 1)
+		dprintk(KERN_DEBUG "%s: error reg=0x%x, data=0x%x, ret=%i\n",
+			__func__, reg, data, ret);
+
+	return (ret != 1) ? -1 : 0;
+}
+
+static int lgs8gxx_read_reg(struct lgs8gxx_state *priv, u8 reg, u8 *p_data)
+{
+	int ret;
+	u8 dev_addr;
+
+	u8 b0[] = { reg };
+	u8 b1[] = { 0 };
+	struct i2c_msg msg[] = {
+		{ .flags = 0, .buf = b0, .len = 1 },
+		{ .flags = I2C_M_RD, .buf = b1, .len = 1 },
+	};
+
+	dev_addr = priv->config->demod_address;
+	if (reg >= 0xC0)
+		dev_addr += 0x02;
+	msg[1].addr =  msg[0].addr = dev_addr;
+
+	ret = i2c_transfer(priv->i2c, msg, 2);
+	if (ret != 2) {
+		dprintk(KERN_DEBUG "%s: error reg=0x%x, ret=%i\n",
+			__func__, reg, ret);
+		return -1;
+	}
+
+	*p_data = b1[0];
+	if (debug >= 2)
+		printk(KERN_DEBUG "%s: reg=0x%02X, data=0x%02X\n",
+			__func__, reg, b1[0]);
+	return 0;
+}
+
+static int lgs8gxx_soft_reset(struct lgs8gxx_state *priv)
+{
+	lgs8gxx_write_reg(priv, 0x02, 0x00);
+	msleep(1);
+	lgs8gxx_write_reg(priv, 0x02, 0x01);
+	msleep(100);
+
+	return 0;
+}
+
+static int lgs8gxx_set_ad_mode(struct lgs8gxx_state *priv)
+{
+	const struct lgs8gxx_config *config = priv->config;
+	u8 if_conf;
+
+	if_conf = 0x10; /* AGC output on; */
+
+	if_conf |=
+		((config->ext_adc) ? 0x80 : 0x00) |
+		((config->if_neg_center) ? 0x04 : 0x00) |
+		((config->if_freq == 0) ? 0x08 : 0x00) | /* Baseband */
+		((config->ext_adc && config->adc_signed) ? 0x02 : 0x00) |
+		((config->ext_adc && config->if_neg_edge) ? 0x01 : 0x00);
+
+	if (config->ext_adc &&
+		(config->prod == LGS8GXX_PROD_LGS8G52)) {
+		lgs8gxx_write_reg(priv, 0xBA, 0x40);
+	}
+
+	lgs8gxx_write_reg(priv, 0x07, if_conf);
+
+	return 0;
+}
+
+static int lgs8gxx_set_if_freq(struct lgs8gxx_state *priv, u32 freq /*in kHz*/)
+{
+	u64 val;
+	u32 v32;
+	u32 if_clk;
+
+	if_clk = priv->config->if_clk_freq;
+
+	val = freq;
+	if (freq != 0) {
+		val *= (u64)1 << 32;
+		if (if_clk != 0)
+			do_div(val, if_clk);
+		v32 = val & 0xFFFFFFFF;
+		dprintk("Set IF Freq to %dkHz\n", freq);
+	} else {
+		v32 = 0;
+		dprintk("Set IF Freq to baseband\n");
+	}
+	dprintk("AFC_INIT_FREQ = 0x%08X\n", v32);
+
+	lgs8gxx_write_reg(priv, 0x09, 0xFF & (v32));
+	lgs8gxx_write_reg(priv, 0x0A, 0xFF & (v32 >> 8));
+	lgs8gxx_write_reg(priv, 0x0B, 0xFF & (v32 >> 16));
+	lgs8gxx_write_reg(priv, 0x0C, 0xFF & (v32 >> 24));
+
+	return 0;
+}
+
+static int lgs8gxx_set_mode_auto(struct lgs8gxx_state *priv)
+{
+	u8 t;
+
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913)
+		lgs8gxx_write_reg(priv, 0xC6, 0x01);
+
+	lgs8gxx_read_reg(priv, 0x7E, &t);
+	lgs8gxx_write_reg(priv, 0x7E, t | 0x01);
+
+	/* clear FEC self reset */
+	lgs8gxx_read_reg(priv, 0xC5, &t);
+	lgs8gxx_write_reg(priv, 0xC5, t & 0xE0);
+
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
+		/* FEC auto detect */
+		lgs8gxx_write_reg(priv, 0xC1, 0x03);
+
+		lgs8gxx_read_reg(priv, 0x7C, &t);
+		t = (t & 0x8C) | 0x03;
+		lgs8gxx_write_reg(priv, 0x7C, t);
+	}
+
+
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
+		/* BER test mode */
+		lgs8gxx_read_reg(priv, 0xC3, &t);
+		t = (t & 0xEF) |  0x10;
+		lgs8gxx_write_reg(priv, 0xC3, t);
+	}
+
+	if (priv->config->prod == LGS8GXX_PROD_LGS8G52)
+		lgs8gxx_write_reg(priv, 0xD9, 0x40);
+
+	return 0;
+}
+
+static int lgs8gxx_set_mode_manual(struct lgs8gxx_state *priv)
+{
+	int ret = 0;
+	u8 t;
+
+	/* turn off auto-detect; manual settings */
+	lgs8gxx_write_reg(priv, 0x7E, 0);
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913)
+		lgs8gxx_write_reg(priv, 0xC1, 0);
+
+	ret = lgs8gxx_read_reg(priv, 0xC5, &t);
+	t = (t & 0xE0) | 0x06;
+	lgs8gxx_write_reg(priv, 0xC5, t);
+
+	lgs8gxx_soft_reset(priv);
+
+	return 0;
+}
+
+static int lgs8gxx_is_locked(struct lgs8gxx_state *priv, u8 *locked)
+{
+	int ret = 0;
+	u8 t;
+
+	ret = lgs8gxx_read_reg(priv, 0x4B, &t);
+	if (ret != 0)
+		return ret;
+
+	*locked = ((t & 0xC0) == 0xC0) ? 1 : 0;
+	return 0;
+}
+
+static int lgs8gxx_is_autodetect_finished(struct lgs8gxx_state *priv,
+					  u8 *finished)
+{
+	int ret = 0;
+	u8 t;
+
+	ret = lgs8gxx_read_reg(priv, 0xA4, &t);
+	if (ret != 0)
+		return ret;
+
+	*finished = ((t & 0x3) == 0x1) ? 1 : 0;
+
+	return 0;
+}
+
+static int lgs8gxx_autolock_gi(struct lgs8gxx_state *priv, u8 gi, u8 *locked)
+{
+	int err;
+	u8 ad_fini = 0;
+
+	if (gi == GI_945)
+		dprintk("try GI 945\n");
+	else if (gi == GI_595)
+		dprintk("try GI 595\n");
+	else if (gi == GI_420)
+		dprintk("try GI 420\n");
+	lgs8gxx_write_reg(priv, 0x04, gi);
+	lgs8gxx_soft_reset(priv);
+	msleep(50);
+	err = lgs8gxx_is_autodetect_finished(priv, &ad_fini);
+	if (err != 0)
+		return err;
+	if (ad_fini) {
+		err = lgs8gxx_is_locked(priv, locked);
+		if (err != 0)
+			return err;
+	}
+
+	return 0;
+}
+
+static int lgs8gxx_auto_detect(struct lgs8gxx_state *priv,
+			       u8 *detected_param, u8 *gi)
+{
+	int i, j;
+	int err = 0;
+	u8 locked = 0, tmp_gi;
+
+	dprintk("%s\n", __func__);
+
+	lgs8gxx_set_mode_auto(priv);
+	/* Guard Interval */
+	lgs8gxx_write_reg(priv, 0x03, 00);
+
+	for (i = 0; i < 2; i++) {
+		for (j = 0; j < 2; j++) {
+			tmp_gi = GI_945;
+			err = lgs8gxx_autolock_gi(priv, GI_945, &locked);
+			if (err)
+				goto out;
+			if (locked)
+				goto locked;
+		}
+		for (j = 0; j < 2; j++) {
+			tmp_gi = GI_420;
+			err = lgs8gxx_autolock_gi(priv, GI_420, &locked);
+			if (err)
+				goto out;
+			if (locked)
+				goto locked;
+		}
+		tmp_gi = GI_595;
+		err = lgs8gxx_autolock_gi(priv, GI_595, &locked);
+		if (err)
+			goto out;
+		if (locked)
+			goto locked;
+	}
+
+locked:
+	if ((err == 0) && (locked == 1)) {
+		u8 t;
+
+		lgs8gxx_read_reg(priv, 0xA2, &t);
+		*detected_param = t;
+
+		if (tmp_gi == GI_945)
+			dprintk("GI 945 locked\n");
+		else if (tmp_gi == GI_595)
+			dprintk("GI 595 locked\n");
+		else if (tmp_gi == GI_420)
+			dprintk("GI 420 locked\n");
+		*gi = tmp_gi;
+	}
+	if (!locked)
+		err = -1;
+
+out:
+	return err;
+}
+
+static void lgs8gxx_auto_lock(struct lgs8gxx_state *priv)
+{
+	s8 err;
+	u8 gi = 0x2;
+	u8 detected_param = 0;
+
+	err = lgs8gxx_auto_detect(priv, &detected_param, &gi);
+
+	if (err != 0) {
+#if 0
+		/* Set auto guardinterval detection */
+		lgs8gxx_write_reg(priv, 0x03, 0x01);
+#endif
+		dprintk("lgs8gxx_auto_detect failed\n");
+	}
+
+	/* Apply detected parameters */
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
+		u8 inter_leave_len = detected_param & TIM_MASK ;
+		inter_leave_len = (inter_leave_len == TIM_LONG) ? 0x60 : 0x40;
+		detected_param &= CF_MASK | SC_MASK  | LGS_FEC_MASK;
+		detected_param |= inter_leave_len;
+	}
+	lgs8gxx_write_reg(priv, 0x7D, detected_param);
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913)
+		lgs8gxx_write_reg(priv, 0xC0, detected_param);
+	/* lgs8gxx_soft_reset(priv); */
+
+	/* Enter manual mode */
+	lgs8gxx_set_mode_manual(priv);
+
+	switch (gi) {
+	case GI_945:
+		priv->curr_gi = 945; break;
+	case GI_595:
+		priv->curr_gi = 595; break;
+	case GI_420:
+		priv->curr_gi = 420; break;
+	default:
+		priv->curr_gi = 945; break;
+	}
+}
+
+static int lgs8gxx_set_mpeg_mode(struct lgs8gxx_state *priv,
+	u8 serial, u8 clk_pol, u8 clk_gated)
+{
+	int ret = 0;
+	u8 t;
+
+	ret = lgs8gxx_read_reg(priv, 0xC2, &t);
+	if (ret != 0)
+		return ret;
+
+	t &= 0xF8;
+	t |= serial ? TS_SERIAL : TS_PARALLEL;
+	t |= clk_pol ? TS_CLK_INVERTED : TS_CLK_NORMAL;
+	t |= clk_gated ? TS_CLK_GATED : TS_CLK_FREERUN;
+
+	ret = lgs8gxx_write_reg(priv, 0xC2, t);
+	if (ret != 0)
+		return ret;
+
+	return 0;
+}
+
+
+/* LGS8913 demod frontend functions */
+
+static int lgs8913_init(struct lgs8gxx_state *priv)
+{
+	u8 t;
+
+	/* LGS8913 specific */
+	lgs8gxx_write_reg(priv, 0xc1, 0x3);
+
+	lgs8gxx_read_reg(priv, 0x7c, &t);
+	lgs8gxx_write_reg(priv, 0x7c, (t&0x8c) | 0x3);
+
+	/* LGS8913 specific */
+	lgs8gxx_read_reg(priv, 0xc3, &t);
+	lgs8gxx_write_reg(priv, 0xc3, t&0x10);
+
+#if 0
+	/* set AGC ref */
+	/* TODO better set from configuration per hardware */
+	lgs8gxx_write_reg(priv, 0x2C, 0);
+	lgs8gxx_write_reg(priv, 0x2D, 0x18);
+	lgs8gxx_write_reg(priv, 0x2E, 0xA2);
+#endif
+
+	return 0;
+}
+
+static int lgs8gxx_init(struct dvb_frontend *fe)
+{
+	struct lgs8gxx_state *priv =
+		(struct lgs8gxx_state *)fe->demodulator_priv;
+	const struct lgs8gxx_config *config = priv->config;
+	u8 data = 0;
+	s8 err;
+	dprintk("%s\n", __func__);
+
+	lgs8gxx_read_reg(priv, 0, &data);
+	dprintk("reg 0 = 0x%02X\n", data);
+
+	/* Setup MPEG output format */
+	err = lgs8gxx_set_mpeg_mode(priv, config->serial_ts,
+				    config->ts_clk_pol,
+				    config->ts_clk_gated);
+	if (err != 0)
+		return -EIO;
+
+	if (config->prod == LGS8GXX_PROD_LGS8913)
+		lgs8913_init(priv);
+	lgs8gxx_set_if_freq(priv, priv->config->if_freq);
+	if (config->prod != LGS8GXX_PROD_LGS8913)
+		lgs8gxx_set_ad_mode(priv);
+
+	return 0;
+}
+
+static void lgs8gxx_release(struct dvb_frontend *fe)
+{
+	struct lgs8gxx_state *state = fe->demodulator_priv;
+	dprintk("%s\n", __func__);
+
+	kfree(state);
+}
+
+#if 0
+static int lgs8gxx_sleep(struct dvb_frontend *fe)
+{
+	dprintk("%s\n", __func__);
+
+	return 0;
+}
+#endif
+
+static int lgs8gxx_write(struct dvb_frontend *fe, u8 *buf, int len)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+
+	if (len != 2)
+		return -EINVAL;
+
+	return lgs8gxx_write_reg(priv, buf[0], buf[1]);
+}
+
+static int lgs8gxx_set_fe(struct dvb_frontend *fe,
+			  struct dvb_frontend_parameters *fe_params)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+
+	dprintk("%s\n", __func__);
+
+	/* set frequency */
+	if (fe->ops.tuner_ops.set_params) {
+		fe->ops.tuner_ops.set_params(fe, fe_params);
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 0);
+	}
+
+	/* start auto lock */
+	lgs8gxx_auto_lock(priv);
+
+	msleep(10);
+
+	return 0;
+}
+
+static int lgs8gxx_get_fe(struct dvb_frontend *fe,
+			  struct dvb_frontend_parameters *fe_params)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+	u8 t;
+#if 0
+	int translated_fec = FEC_1_2;
+#endif
+
+	dprintk("%s\n", __func__);
+
+	/* TODO: get real readings from device */
+	/* inversion status */
+	fe_params->inversion = INVERSION_OFF;
+
+	/* bandwidth */
+	fe_params->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
+
+
+	lgs8gxx_read_reg(priv, 0x7D, &t);
+#if 0
+	/* FEC. No exact match for DMB-TH, pick approx. value */
+	switch (t & LGS_FEC_MASK) {
+	case  LGS_FEC_0_4: /* FEC 0.4 */
+		translated_fec = FEC_1_2;
+		break;
+	case  LGS_FEC_0_6: /* FEC 0.6 */
+		translated_fec = FEC_2_3;
+		break;
+	case  LGS_FEC_0_8: /* FEC 0.8 */
+		translated_fec = FEC_5_6;
+		break;
+	default:
+		translated_fec = FEC_1_2;
+	}
+	fe_params->u.ofdm.code_rate_HP = translated_fec;
+	fe_params->u.ofdm.code_rate_LP = translated_fec;
+#endif
+	fe_params->u.ofdm.code_rate_HP = FEC_AUTO;
+	fe_params->u.ofdm.code_rate_LP = FEC_AUTO;
+
+	/* constellation */
+	switch (t & SC_MASK) {
+	case SC_QAM64:
+		fe_params->u.ofdm.constellation = QAM_64;
+		break;
+	case SC_QAM32:
+		fe_params->u.ofdm.constellation = QAM_32;
+		break;
+	case SC_QAM16:
+		fe_params->u.ofdm.constellation = QAM_16;
+		break;
+	case SC_QAM4:
+	case SC_QAM4NR:
+		fe_params->u.ofdm.constellation = QPSK;
+		break;
+	default:
+		fe_params->u.ofdm.constellation = QAM_64;
+	}
+
+	/* transmission mode */
+	fe_params->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
+
+	/* guard interval */
+	fe_params->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
+
+	/* hierarchy */
+	fe_params->u.ofdm.hierarchy_information = HIERARCHY_NONE;
+
+	return 0;
+}
+
+static
+int lgs8gxx_get_tune_settings(struct dvb_frontend *fe,
+			      struct dvb_frontend_tune_settings *fesettings)
+{
+	/* FIXME: copy from tda1004x.c */
+	fesettings->min_delay_ms = 800;
+	fesettings->step_size = 0;
+	fesettings->max_drift = 0;
+	return 0;
+}
+
+static int lgs8gxx_read_status(struct dvb_frontend *fe, fe_status_t *fe_status)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+	s8 ret;
+	u8 t;
+
+	dprintk("%s\n", __func__);
+
+	ret = lgs8gxx_read_reg(priv, 0x4B, &t);
+	if (ret != 0)
+		return -EIO;
+
+	dprintk("Reg 0x4B: 0x%02X\n", t);
+
+	*fe_status = 0;
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
+		if ((t & 0x40) == 0x40)
+			*fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
+		if ((t & 0x80) == 0x80)
+			*fe_status |= FE_HAS_VITERBI | FE_HAS_SYNC |
+				FE_HAS_LOCK;
+	} else {
+		if ((t & 0x80) == 0x80)
+			*fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
+				FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
+	}
+
+	/* success */
+	dprintk("%s: fe_status=0x%x\n", __func__, *fe_status);
+	return 0;
+}
+
+static int lgs8gxx_read_signal_agc(struct lgs8gxx_state *priv, u16 *signal)
+{
+	u16 v;
+	u8 agc_lvl[2], cat;
+
+	dprintk("%s()\n", __func__);
+	lgs8gxx_read_reg(priv, 0x3F, &agc_lvl[0]);
+	lgs8gxx_read_reg(priv, 0x3E, &agc_lvl[1]);
+
+	v = agc_lvl[0];
+	v <<= 8;
+	v |= agc_lvl[1];
+
+	dprintk("agc_lvl: 0x%04X\n", v);
+
+	if (v < 0x100)
+		cat = 0;
+	else if (v < 0x190)
+		cat = 5;
+	else if (v < 0x2A8)
+		cat = 4;
+	else if (v < 0x381)
+		cat = 3;
+	else if (v < 0x400)
+		cat = 2;
+	else if (v == 0x400)
+		cat = 1;
+	else
+		cat = 0;
+
+	*signal = cat;
+
+	return 0;
+}
+
+static int lgs8913_read_signal_strength(struct lgs8gxx_state *priv, u16 *signal)
+{
+	u8 t; s8 ret;
+	s16 max_strength = 0;
+	u8 str;
+	u16 i, gi = priv->curr_gi;
+
+	dprintk("%s\n", __func__);
+
+	ret = lgs8gxx_read_reg(priv, 0x4B, &t);
+	if (ret != 0)
+		return -EIO;
+
+	if (fake_signal_str) {
+		if ((t & 0xC0) == 0xC0) {
+			dprintk("Fake signal strength as 50\n");
+			*signal = 0x32;
+		} else
+			*signal = 0;
+		return 0;
+	}
+
+	dprintk("gi = %d\n", gi);
+	for (i = 0; i < gi; i++) {
+
+		if ((i & 0xFF) == 0)
+			lgs8gxx_write_reg(priv, 0x84, 0x03 & (i >> 8));
+		lgs8gxx_write_reg(priv, 0x83, i & 0xFF);
+
+		lgs8gxx_read_reg(priv, 0x94, &str);
+		if (max_strength < str)
+			max_strength = str;
+	}
+
+	*signal = max_strength;
+	dprintk("%s: signal=0x%02X\n", __func__, *signal);
+
+	lgs8gxx_read_reg(priv, 0x95, &t);
+	dprintk("%s: AVG Noise=0x%02X\n", __func__, t);
+
+	return 0;
+}
+
+static int lgs8gxx_read_signal_strength(struct dvb_frontend *fe, u16 *signal)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913)
+		return lgs8913_read_signal_strength(priv, signal);
+	else
+		return lgs8gxx_read_signal_agc(priv, signal);
+}
+
+static int lgs8gxx_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+	u8 t;
+	*snr = 0;
+
+	lgs8gxx_read_reg(priv, 0x95, &t);
+	dprintk("AVG Noise=0x%02X\n", t);
+	*snr = 256 - t;
+	*snr <<= 8;
+	dprintk("snr=0x%x\n", *snr);
+
+	return 0;
+}
+
+static int lgs8gxx_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+	*ucblocks = 0;
+	dprintk("%s: ucblocks=0x%x\n", __func__, *ucblocks);
+	return 0;
+}
+
+static int lgs8gxx_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+	u8 r0, r1, r2, r3;
+	u32 total_cnt, err_cnt;
+
+	dprintk("%s\n", __func__);
+
+	lgs8gxx_write_reg(priv, 0xc6, 0x01);
+	lgs8gxx_write_reg(priv, 0xc6, 0x41);
+	lgs8gxx_write_reg(priv, 0xc6, 0x01);
+
+	msleep(200);
+
+	lgs8gxx_write_reg(priv, 0xc6, 0x81);
+	lgs8gxx_read_reg(priv, 0xd0, &r0);
+	lgs8gxx_read_reg(priv, 0xd1, &r1);
+	lgs8gxx_read_reg(priv, 0xd2, &r2);
+	lgs8gxx_read_reg(priv, 0xd3, &r3);
+	total_cnt = (r3 << 24) | (r2 << 16) | (r1 << 8) | (r0);
+	lgs8gxx_read_reg(priv, 0xd4, &r0);
+	lgs8gxx_read_reg(priv, 0xd5, &r1);
+	lgs8gxx_read_reg(priv, 0xd6, &r2);
+	lgs8gxx_read_reg(priv, 0xd7, &r3);
+	err_cnt = (r3 << 24) | (r2 << 16) | (r1 << 8) | (r0);
+	dprintk("error=%d total=%d\n", err_cnt, total_cnt);
+
+	if (total_cnt == 0)
+		*ber = 0;
+	else
+		*ber = err_cnt * 100 / total_cnt;
+
+	dprintk("%s: ber=0x%x\n", __func__, *ber);
+	return 0;
+}
+
+static int lgs8gxx_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+
+	if (priv->config->tuner_address == 0)
+		return 0;
+	if (enable) {
+		u8 v = 0x80 | priv->config->tuner_address;
+		return lgs8gxx_write_reg(priv, 0x01, v);
+	}
+	return lgs8gxx_write_reg(priv, 0x01, 0);
+}
+
+static struct dvb_frontend_ops lgs8gxx_ops = {
+	.info = {
+		.name = "Legend Silicon LGS8913/LGS8GXX DMB-TH",
+		.type = FE_OFDM,
+		.frequency_min = 474000000,
+		.frequency_max = 858000000,
+		.frequency_stepsize = 10000,
+		.caps =
+			FE_CAN_FEC_AUTO |
+			FE_CAN_QAM_AUTO |
+			FE_CAN_TRANSMISSION_MODE_AUTO |
+			FE_CAN_GUARD_INTERVAL_AUTO
+	},
+
+	.release = lgs8gxx_release,
+
+	.init = lgs8gxx_init,
+#if 0
+	.sleep = lgs8gxx_sleep,
+#endif
+	.write = lgs8gxx_write,
+	.i2c_gate_ctrl = lgs8gxx_i2c_gate_ctrl,
+
+	.set_frontend = lgs8gxx_set_fe,
+	.get_frontend = lgs8gxx_get_fe,
+	.get_tune_settings = lgs8gxx_get_tune_settings,
+
+	.read_status = lgs8gxx_read_status,
+	.read_ber = lgs8gxx_read_ber,
+	.read_signal_strength = lgs8gxx_read_signal_strength,
+	.read_snr = lgs8gxx_read_snr,
+	.read_ucblocks = lgs8gxx_read_ucblocks,
+};
+
+struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
+	struct i2c_adapter *i2c)
+{
+	struct lgs8gxx_state *priv = NULL;
+	u8 data = 0;
+
+	dprintk("%s()\n", __func__);
+
+	if (config == NULL || i2c == NULL)
+		return NULL;
+
+	priv = kzalloc(sizeof(struct lgs8gxx_state), GFP_KERNEL);
+	if (priv == NULL)
+		goto error_out;
+
+	priv->config = config;
+	priv->i2c = i2c;
+
+	/* check if the demod is there */
+	if (lgs8gxx_read_reg(priv, 0, &data) != 0) {
+		dprintk("%s lgs8gxx not found at i2c addr 0x%02X\n",
+			__func__, priv->config->demod_address);
+		goto error_out;
+	}
+
+	lgs8gxx_read_reg(priv, 1, &data);
+
+	memcpy(&priv->frontend.ops, &lgs8gxx_ops,
+	       sizeof(struct dvb_frontend_ops));
+	priv->frontend.demodulator_priv = priv;
+
+	return &priv->frontend;
+
+error_out:
+	dprintk("%s() error_out\n", __func__);
+	kfree(priv);
+	return NULL;
+
+}
+EXPORT_SYMBOL(lgs8gxx_attach);
+
+MODULE_DESCRIPTION("Legend Silicon LGS8913/LGS8GXX DMB-TH demodulator driver");
+MODULE_AUTHOR("David T. L. Wong <davidtlwong@gmail.com>");
+MODULE_LICENSE("GPL");
diff --git a/linux/drivers/media/dvb/frontends/lgs8gxx.h b/linux/drivers/media/dvb/frontends/lgs8gxx.h
new file mode 100644
index 000000000..321d366a8
--- /dev/null
+++ b/linux/drivers/media/dvb/frontends/lgs8gxx.h
@@ -0,0 +1,90 @@
+/*
+ *    Support for Legend Silicon DMB-TH demodulator
+ *    LGS8913, LGS8GL5
+ *    experimental support LGS8G42, LGS8G52
+ *
+ *    Copyright (C) 2007,2008 David T.L. Wong <davidtlwong@gmail.com>
+ *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
+ *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
+ *
+ *    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.
+ *
+ */
+
+#ifndef __LGS8GXX_H__
+#define __LGS8GXX_H__
+
+#include <linux/dvb/frontend.h>
+#include <linux/i2c.h>
+
+#define LGS8GXX_PROD_LGS8913 0
+#define LGS8GXX_PROD_LGS8GL5 1
+#define LGS8GXX_PROD_LGS8G42 3
+#define LGS8GXX_PROD_LGS8G52 4
+#define LGS8GXX_PROD_LGS8G54 5
+
+struct lgs8gxx_config {
+
+	/* product type */
+	u8 prod;
+
+	/* the demodulator's i2c address */
+	u8 demod_address;
+
+	/* parallel or serial transport stream */
+	u8 serial_ts;
+
+	/* transport stream polarity*/
+	u8 ts_clk_pol;
+
+	/* transport stream clock gated by ts_valid */
+	u8 ts_clk_gated;
+
+	/* A/D Clock frequency */
+	u32 if_clk_freq; /* in kHz */
+
+	/* IF frequency */
+	u32 if_freq; /* in kHz */
+
+	/*Use External ADC*/
+	u8 ext_adc;
+
+	/*External ADC output two's complement*/
+	u8 adc_signed;
+
+	/*Sample IF data at falling edge of IF_CLK*/
+	u8 if_neg_edge;
+
+	/*IF use Negative center frequency*/
+	u8 if_neg_center;
+
+	/* slave address and configuration of the tuner */
+	u8 tuner_address;
+};
+
+#if defined(CONFIG_DVB_LGS8GXX) || \
+	(defined(CONFIG_DVB_LGS8GXX_MODULE) && defined(MODULE))
+extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
+					   struct i2c_adapter *i2c);
+#else
+static inline
+struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
+				    struct i2c_adapter *i2c) {
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif /* CONFIG_DVB_LGS8GXX */
+
+#endif /* __LGS8GXX_H__ */
diff --git a/linux/drivers/media/dvb/frontends/lgs8gxx_priv.h b/linux/drivers/media/dvb/frontends/lgs8gxx_priv.h
new file mode 100644
index 000000000..9776d3068
--- /dev/null
+++ b/linux/drivers/media/dvb/frontends/lgs8gxx_priv.h
@@ -0,0 +1,70 @@
+/*
+ *    Support for Legend Silicon DMB-TH demodulator
+ *    LGS8913, LGS8GL5
+ *    experimental support LGS8G42, LGS8G52
+ *
+ *    Copyright (C) 2007,2008 David T.L. Wong <davidtlwong@gmail.com>
+ *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
+ *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
+ *
+ *    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.
+ *
+ */
+
+#ifndef LGS8913_PRIV_H
+#define LGS8913_PRIV_H
+
+struct lgs8gxx_state {
+	struct i2c_adapter *i2c;
+	/* configuration settings */
+	const struct lgs8gxx_config *config;
+	struct dvb_frontend frontend;
+	u16 curr_gi; /* current guard interval */
+};
+
+#define SC_MASK		0x1C	/* Sub-Carrier Modulation Mask */
+#define SC_QAM64	0x10	/* 64QAM modulation */
+#define SC_QAM32	0x0C	/* 32QAM modulation */
+#define SC_QAM16	0x08	/* 16QAM modulation */
+#define SC_QAM4NR	0x04	/* 4QAM modulation */
+#define SC_QAM4		0x00	/* 4QAM modulation */
+
+#define LGS_FEC_MASK	0x03	/* FEC Rate Mask */
+#define LGS_FEC_0_4	0x00	/* FEC Rate 0.4 */
+#define LGS_FEC_0_6	0x01	/* FEC Rate 0.6 */
+#define LGS_FEC_0_8	0x02	/* FEC Rate 0.8 */
+
+#define TIM_MASK	  0x20	/* Time Interleave Length Mask */
+#define TIM_LONG	  0x00	/* Time Interleave Length = 720 */
+#define TIM_MIDDLE     0x20   /* Time Interleave Length = 240 */
+
+#define CF_MASK	0x80	/* Control Frame Mask */
+#define CF_EN	0x80	/* Control Frame On */
+
+#define GI_MASK	0x03	/* Guard Interval Mask */
+#define GI_420	0x00	/* 1/9 Guard Interval */
+#define GI_595	0x01	/* */
+#define GI_945	0x02	/* 1/4 Guard Interval */
+
+
+#define TS_PARALLEL	0x00	/* Parallel TS Output a.k.a. SPI */
+#define TS_SERIAL	0x01	/* Serial TS Output a.k.a. SSI */
+#define TS_CLK_NORMAL		0x00	/* MPEG Clock Normal */
+#define TS_CLK_INVERTED		0x02	/* MPEG Clock Inverted */
+#define TS_CLK_GATED		0x00	/* MPEG clock gated */
+#define TS_CLK_FREERUN		0x04	/* MPEG clock free running*/
+
+
+#endif
-- 
cgit v1.2.3


From 5d077a339744b7da7c3a5611c5d433ecdac55ecf Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Wed, 1 Apr 2009 20:25:00 +0000
Subject: Revert "V4L/DVB (10962): fired-avc: fix printk formatting warning."

From: Stefan Richter <stefanr@s5r6.in-berlin.de>

Commit 34aecd2851bba5c2b7dae2f0dbe8e629b1c5e4ac was made obsolete
and invalid by commit 40cf65d149053889c8876c6c2b4ce204fde55baa.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 linux/drivers/media/dvb/firewire/firedtv-avc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'linux/drivers')

diff --git a/linux/drivers/media/dvb/firewire/firedtv-avc.c b/linux/drivers/media/dvb/firewire/firedtv-avc.c
index d8dae2599..79fab477c 100644
--- a/linux/drivers/media/dvb/firewire/firedtv-avc.c
+++ b/linux/drivers/media/dvb/firewire/firedtv-avc.c
@@ -150,7 +150,7 @@ static void debug_fcp(const u8 *data, size_t length)
 		subunit_type = data[1] >> 3;
 		subunit_id = data[1] & 7;
 		op = subunit_type == 0x1e || subunit_id == 5 ? ~0 : data[2];
-		printk(KERN_INFO "%ssu=%x.%x l=%zu: %-8s - %s\n",
+		printk(KERN_INFO "%ssu=%x.%x l=%d: %-8s - %s\n",
 		       prefix, subunit_type, subunit_id, length,
 		       debug_fcp_ctype(data[0]),
 		       debug_fcp_opcode(op, data, length));
-- 
cgit v1.2.3