Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1155 insertions, 0 deletions

diff --git a/drivers/media/i2c/msp3400-kthreads.c b/drivers/media/i2c/msp3400-kthreads.c
new file mode 100644
index 0000000000..ecabc0e1d3
--- /dev/null
+++ b/drivers/media/i2c/msp3400-kthreads.c
@@ -0,0 +1,1155 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Programming the mspx4xx sound processor family
+ *
+ * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/freezer.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/drv-intf/msp3400.h>
+#include <linux/kthread.h>
+#include <linux/suspend.h>
+#include "msp3400-driver.h"
+
+/* this one uses the automatic sound standard detection of newer msp34xx
+   chip versions */
+static struct {
+	int retval;
+	int main, second;
+	char *name;
+	v4l2_std_id std;
+} msp_stdlist[] = {
+	{ 0x0000, 0, 0, "could not detect sound standard", V4L2_STD_ALL },
+	{ 0x0001, 0, 0, "autodetect start", V4L2_STD_ALL },
+	{ 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72),
+	  "4.5/4.72  M Dual FM-Stereo", V4L2_STD_MN },
+	{ 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875),
+	  "5.5/5.74  B/G Dual FM-Stereo", V4L2_STD_BG },
+	{ 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125),
+	  "6.5/6.25  D/K1 Dual FM-Stereo", V4L2_STD_DK },
+	{ 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875),
+	  "6.5/6.74  D/K2 Dual FM-Stereo", V4L2_STD_DK },
+	{ 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
+	  "6.5  D/K FM-Mono (HDEV3)", V4L2_STD_DK },
+	{ 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875),
+	  "6.5/5.74  D/K3 Dual FM-Stereo", V4L2_STD_DK },
+	{ 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85),
+	  "5.5/5.85  B/G NICAM FM", V4L2_STD_BG },
+	{ 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
+	  "6.5/5.85  L NICAM AM", V4L2_STD_L },
+	{ 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55),
+	  "6.0/6.55  I NICAM FM", V4L2_STD_PAL_I },
+	{ 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
+	  "6.5/5.85  D/K NICAM FM", V4L2_STD_DK },
+	{ 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
+	  "6.5/5.85  D/K NICAM FM (HDEV2)", V4L2_STD_DK },
+	{ 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85),
+	  "6.5/5.85  D/K NICAM FM (HDEV3)", V4L2_STD_DK },
+	{ 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
+	  "4.5  M BTSC-Stereo", V4L2_STD_MTS },
+	{ 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
+	  "4.5  M BTSC-Mono + SAP", V4L2_STD_MTS },
+	{ 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5),
+	  "4.5  M EIA-J Japan Stereo", V4L2_STD_NTSC_M_JP },
+	{ 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7),
+	  "10.7  FM-Stereo Radio", V4L2_STD_ALL },
+	{ 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5),
+	  "6.5  SAT-Mono", V4L2_STD_ALL },
+	{ 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20),
+	  "7.02/7.20  SAT-Stereo", V4L2_STD_ALL },
+	{ 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2),
+	  "7.2  SAT ADR", V4L2_STD_ALL },
+	{     -1, 0, 0, NULL, 0 }, /* EOF */
+};
+
+static struct msp3400c_init_data_dem {
+	int fir1[6];
+	int fir2[6];
+	int cdo1;
+	int cdo2;
+	int ad_cv;
+	int mode_reg;
+	int dsp_src;
+	int dsp_matrix;
+} msp3400c_init_data[] = {
+	{	/* AM (for carrier detect / msp3400) */
+		{75, 19, 36, 35, 39, 40},
+		{75, 19, 36, 35, 39, 40},
+		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
+		0x00d0, 0x0500, 0x0020, 0x3000
+	}, {	/* AM (for carrier detect / msp3410) */
+		{-1, -1, -8, 2, 59, 126},
+		{-1, -1, -8, 2, 59, 126},
+		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
+		0x00d0, 0x0100, 0x0020, 0x3000
+	}, {	/* FM Radio */
+		{-8, -8, 4, 6, 78, 107},
+		{-8, -8, 4, 6, 78, 107},
+		MSP_CARRIER(10.7), MSP_CARRIER(10.7),
+		0x00d0, 0x0480, 0x0020, 0x3000
+	}, {	/* Terrestrial FM-mono + FM-stereo */
+		{3, 18, 27, 48, 66, 72},
+		{3, 18, 27, 48, 66, 72},
+		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
+		0x00d0, 0x0480, 0x0030, 0x3000
+	}, {	/* Sat FM-mono */
+		{ 1, 9, 14, 24, 33, 37},
+		{ 3, 18, 27, 48, 66, 72},
+		MSP_CARRIER(6.5), MSP_CARRIER(6.5),
+		0x00c6, 0x0480, 0x0000, 0x3000
+	}, {	/* NICAM/FM --  B/G (5.5/5.85), D/K (6.5/5.85) */
+		{-2, -8, -10, 10, 50, 86},
+		{3, 18, 27, 48, 66, 72},
+		MSP_CARRIER(5.5), MSP_CARRIER(5.5),
+		0x00d0, 0x0040, 0x0120, 0x3000
+	}, {	/* NICAM/FM -- I (6.0/6.552) */
+		{2, 4, -6, -4, 40, 94},
+		{3, 18, 27, 48, 66, 72},
+		MSP_CARRIER(6.0), MSP_CARRIER(6.0),
+		0x00d0, 0x0040, 0x0120, 0x3000
+	}, {	/* NICAM/AM -- L (6.5/5.85) */
+		{-2, -8, -10, 10, 50, 86},
+		{-4, -12, -9, 23, 79, 126},
+		MSP_CARRIER(6.5), MSP_CARRIER(6.5),
+		0x00c6, 0x0140, 0x0120, 0x7c00
+	},
+};
+
+struct msp3400c_carrier_detect {
+	int   cdo;
+	char *name;
+};
+
+static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
+	/* main carrier */
+	{ MSP_CARRIER(4.5),        "4.5   NTSC"                   },
+	{ MSP_CARRIER(5.5),        "5.5   PAL B/G"                },
+	{ MSP_CARRIER(6.0),        "6.0   PAL I"                  },
+	{ MSP_CARRIER(6.5),        "6.5   PAL D/K + SAT + SECAM"  }
+};
+
+static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
+	/* PAL B/G */
+	{ MSP_CARRIER(5.7421875),  "5.742 PAL B/G FM-stereo"     },
+	{ MSP_CARRIER(5.85),       "5.85  PAL B/G NICAM"         }
+};
+
+static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
+	/* PAL SAT / SECAM */
+	{ MSP_CARRIER(5.85),       "5.85  PAL D/K + SECAM NICAM" },
+	{ MSP_CARRIER(6.2578125),  "6.25  PAL D/K1 FM-stereo" },
+	{ MSP_CARRIER(6.7421875),  "6.74  PAL D/K2 FM-stereo" },
+	{ MSP_CARRIER(7.02),       "7.02  PAL SAT FM-stereo s/b" },
+	{ MSP_CARRIER(7.20),       "7.20  PAL SAT FM-stereo s"   },
+	{ MSP_CARRIER(7.38),       "7.38  PAL SAT FM-stereo b"   },
+};
+
+/* ------------------------------------------------------------------------ */
+
+const char *msp_standard_std_name(int std)
+{
+	int i;
+
+	for (i = 0; msp_stdlist[i].name != NULL; i++)
+		if (msp_stdlist[i].retval == std)
+			return msp_stdlist[i].name;
+	return "unknown";
+}
+
+static v4l2_std_id msp_standard_std(int std)
+{
+	int i;
+
+	for (i = 0; msp_stdlist[i].name != NULL; i++)
+		if (msp_stdlist[i].retval == std)
+			return msp_stdlist[i].std;
+	return V4L2_STD_ALL;
+}
+
+static void msp_set_source(struct i2c_client *client, u16 src)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+
+	if (msp_dolby) {
+		msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */
+		msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */
+	} else {
+		msp_write_dsp(client, 0x0008, src);
+		msp_write_dsp(client, 0x0009, src);
+	}
+	msp_write_dsp(client, 0x000a, src);
+	msp_write_dsp(client, 0x000b, src);
+	msp_write_dsp(client, 0x000c, src);
+	if (state->has_scart2_out)
+		msp_write_dsp(client, 0x0041, src);
+}
+
+void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2)
+{
+	msp_write_dem(client, 0x0093, cdo1 & 0xfff);
+	msp_write_dem(client, 0x009b, cdo1 >> 12);
+	msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
+	msp_write_dem(client, 0x00ab, cdo2 >> 12);
+	msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */
+}
+
+void msp3400c_set_mode(struct i2c_client *client, int mode)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+	struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode];
+	int tuner = (state->route_in >> 3) & 1;
+	int i;
+
+	dev_dbg_lvl(&client->dev, 1, msp_debug, "set_mode: %d\n", mode);
+	state->mode = mode;
+	state->rxsubchans = V4L2_TUNER_SUB_MONO;
+
+	msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0));
+
+	for (i = 5; i >= 0; i--)               /* fir 1 */
+		msp_write_dem(client, 0x0001, data->fir1[i]);
+
+	msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
+	msp_write_dem(client, 0x0005, 0x0040);
+	msp_write_dem(client, 0x0005, 0x0000);
+	for (i = 5; i >= 0; i--)
+		msp_write_dem(client, 0x0005, data->fir2[i]);
+
+	msp_write_dem(client, 0x0083, data->mode_reg);
+
+	msp3400c_set_carrier(client, data->cdo1, data->cdo2);
+
+	msp_set_source(client, data->dsp_src);
+	/* set prescales */
+
+	/* volume prescale for SCART (AM mono input) */
+	msp_write_dsp(client, 0x000d, 0x1900);
+	msp_write_dsp(client, 0x000e, data->dsp_matrix);
+	if (state->has_nicam) /* nicam prescale */
+		msp_write_dsp(client, 0x0010, 0x5a00);
+}
+
+/* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP,
+   nor do they support stereo BTSC. */
+static void msp3400c_set_audmode(struct i2c_client *client)
+{
+	static char *strmode[] = {
+		"mono", "stereo", "lang2", "lang1", "lang1+lang2"
+	};
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+	char *modestr = (state->audmode >= 0 && state->audmode < 5) ?
+		strmode[state->audmode] : "unknown";
+	int src = 0;	/* channel source: FM/AM, nicam or SCART */
+	int audmode = state->audmode;
+
+	if (state->opmode == OPMODE_AUTOSELECT) {
+		/* this method would break everything, let's make sure
+		 * it's never called
+		 */
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"set_audmode called with mode=%d instead of set_source (ignored)\n",
+			state->audmode);
+		return;
+	}
+
+	/* Note: for the C and D revs no NTSC stereo + SAP is possible as
+	   the hardware does not support SAP. So the rxsubchans combination
+	   of STEREO | LANG2 does not occur. */
+
+	if (state->mode != MSP_MODE_EXTERN) {
+		/* switch to mono if only mono is available */
+		if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
+			audmode = V4L2_TUNER_MODE_MONO;
+		/* if bilingual */
+		else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
+			/* and mono or stereo, then fallback to lang1 */
+			if (audmode == V4L2_TUNER_MODE_MONO ||
+			    audmode == V4L2_TUNER_MODE_STEREO)
+				audmode = V4L2_TUNER_MODE_LANG1;
+		}
+		/* if stereo, and audmode is not mono, then switch to stereo */
+		else if (audmode != V4L2_TUNER_MODE_MONO)
+			audmode = V4L2_TUNER_MODE_STEREO;
+	}
+
+	/* switch demodulator */
+	switch (state->mode) {
+	case MSP_MODE_FM_TERRA:
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "FM set_audmode: %s\n", modestr);
+		switch (audmode) {
+		case V4L2_TUNER_MODE_STEREO:
+			msp_write_dsp(client, 0x000e, 0x3001);
+			break;
+		case V4L2_TUNER_MODE_MONO:
+		case V4L2_TUNER_MODE_LANG1:
+		case V4L2_TUNER_MODE_LANG2:
+		case V4L2_TUNER_MODE_LANG1_LANG2:
+			msp_write_dsp(client, 0x000e, 0x3000);
+			break;
+		}
+		break;
+	case MSP_MODE_FM_SAT:
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "SAT set_audmode: %s\n", modestr);
+		switch (audmode) {
+		case V4L2_TUNER_MODE_MONO:
+			msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
+			break;
+		case V4L2_TUNER_MODE_STEREO:
+		case V4L2_TUNER_MODE_LANG1_LANG2:
+			msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
+			break;
+		case V4L2_TUNER_MODE_LANG1:
+			msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
+			break;
+		case V4L2_TUNER_MODE_LANG2:
+			msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
+			break;
+		}
+		break;
+	case MSP_MODE_FM_NICAM1:
+	case MSP_MODE_FM_NICAM2:
+	case MSP_MODE_AM_NICAM:
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"NICAM set_audmode: %s\n", modestr);
+		if (state->nicam_on)
+			src = 0x0100;  /* NICAM */
+		break;
+	case MSP_MODE_BTSC:
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"BTSC set_audmode: %s\n", modestr);
+		break;
+	case MSP_MODE_EXTERN:
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"extern set_audmode: %s\n", modestr);
+		src = 0x0200;  /* SCART */
+		break;
+	case MSP_MODE_FM_RADIO:
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"FM-Radio set_audmode: %s\n", modestr);
+		break;
+	default:
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "mono set_audmode\n");
+		return;
+	}
+
+	/* switch audio */
+	dev_dbg_lvl(&client->dev, 1, msp_debug, "set audmode %d\n", audmode);
+	switch (audmode) {
+	case V4L2_TUNER_MODE_STEREO:
+	case V4L2_TUNER_MODE_LANG1_LANG2:
+		src |= 0x0020;
+		break;
+	case V4L2_TUNER_MODE_MONO:
+		if (state->mode == MSP_MODE_AM_NICAM) {
+			dev_dbg_lvl(&client->dev, 1, msp_debug, "switching to AM mono\n");
+			/* AM mono decoding is handled by tuner, not MSP chip */
+			/* SCART switching control register */
+			msp_set_scart(client, SCART_MONO, 0);
+			src = 0x0200;
+			break;
+		}
+		if (state->rxsubchans & V4L2_TUNER_SUB_STEREO)
+			src = 0x0030;
+		break;
+	case V4L2_TUNER_MODE_LANG1:
+		break;
+	case V4L2_TUNER_MODE_LANG2:
+		src |= 0x0010;
+		break;
+	}
+	dev_dbg_lvl(&client->dev, 1, msp_debug,
+		"set_audmode final source/matrix = 0x%x\n", src);
+
+	msp_set_source(client, src);
+}
+
+static void msp3400c_print_mode(struct i2c_client *client)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+
+	if (state->main == state->second)
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"mono sound carrier: %d.%03d MHz\n",
+			state->main / 910000, (state->main / 910) % 1000);
+	else
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"main sound carrier: %d.%03d MHz\n",
+			state->main / 910000, (state->main / 910) % 1000);
+	if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"NICAM/FM carrier  : %d.%03d MHz\n",
+			state->second / 910000, (state->second/910) % 1000);
+	if (state->mode == MSP_MODE_AM_NICAM)
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"NICAM/AM carrier  : %d.%03d MHz\n",
+			state->second / 910000, (state->second / 910) % 1000);
+	if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) {
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"FM-stereo carrier : %d.%03d MHz\n",
+			state->second / 910000, (state->second / 910) % 1000);
+	}
+}
+
+/* ----------------------------------------------------------------------- */
+
+static int msp3400c_detect_stereo(struct i2c_client *client)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+	int val;
+	int rxsubchans = state->rxsubchans;
+	int newnicam = state->nicam_on;
+	int update = 0;
+
+	switch (state->mode) {
+	case MSP_MODE_FM_TERRA:
+		val = msp_read_dsp(client, 0x18);
+		if (val > 32767)
+			val -= 65536;
+		dev_dbg_lvl(&client->dev, 2, msp_debug,
+			"stereo detect register: %d\n", val);
+		if (val > 8192) {
+			rxsubchans = V4L2_TUNER_SUB_STEREO;
+		} else if (val < -4096) {
+			rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
+		} else {
+			rxsubchans = V4L2_TUNER_SUB_MONO;
+		}
+		newnicam = 0;
+		break;
+	case MSP_MODE_FM_NICAM1:
+	case MSP_MODE_FM_NICAM2:
+	case MSP_MODE_AM_NICAM:
+		val = msp_read_dem(client, 0x23);
+		dev_dbg_lvl(&client->dev, 2, msp_debug, "nicam sync=%d, mode=%d\n",
+			val & 1, (val & 0x1e) >> 1);
+
+		if (val & 1) {
+			/* nicam synced */
+			switch ((val & 0x1e) >> 1)  {
+			case 0:
+			case 8:
+				rxsubchans = V4L2_TUNER_SUB_STEREO;
+				break;
+			case 1:
+			case 9:
+				rxsubchans = V4L2_TUNER_SUB_MONO;
+				break;
+			case 2:
+			case 10:
+				rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
+				break;
+			default:
+				rxsubchans = V4L2_TUNER_SUB_MONO;
+				break;
+			}
+			newnicam = 1;
+		} else {
+			newnicam = 0;
+			rxsubchans = V4L2_TUNER_SUB_MONO;
+		}
+		break;
+	}
+	if (rxsubchans != state->rxsubchans) {
+		update = 1;
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"watch: rxsubchans %02x => %02x\n",
+			state->rxsubchans, rxsubchans);
+		state->rxsubchans = rxsubchans;
+	}
+	if (newnicam != state->nicam_on) {
+		update = 1;
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "watch: nicam %d => %d\n",
+			state->nicam_on, newnicam);
+		state->nicam_on = newnicam;
+	}
+	return update;
+}
+
+/*
+ * A kernel thread for msp3400 control -- we don't want to block the
+ * in the ioctl while doing the sound carrier & stereo detect
+ */
+/* stereo/multilang monitoring */
+static void watch_stereo(struct i2c_client *client)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+
+	if (msp_detect_stereo(client))
+		msp_set_audmode(client);
+
+	if (msp_once)
+		state->watch_stereo = 0;
+}
+
+int msp3400c_thread(void *data)
+{
+	struct i2c_client *client = data;
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+	struct msp3400c_carrier_detect *cd;
+	int count, max1, max2, val1, val2, val, i;
+
+	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3400 daemon started\n");
+	state->detected_std = V4L2_STD_ALL;
+	set_freezable();
+	for (;;) {
+		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3400 thread: sleep\n");
+		msp_sleep(state, -1);
+		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3400 thread: wakeup\n");
+
+restart:
+		dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n");
+		state->restart = 0;
+		if (kthread_should_stop())
+			break;
+
+		if (state->radio || MSP_MODE_EXTERN == state->mode) {
+			/* no carrier scan, just unmute */
+			dev_dbg_lvl(&client->dev, 1, msp_debug,
+				"thread: no carrier scan\n");
+			state->scan_in_progress = 0;
+			msp_update_volume(state);
+			continue;
+		}
+
+		/* mute audio */
+		state->scan_in_progress = 1;
+		msp_update_volume(state);
+
+		msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
+		val1 = val2 = 0;
+		max1 = max2 = -1;
+		state->watch_stereo = 0;
+		state->nicam_on = 0;
+
+		/* wait for tuner to settle down after a channel change */
+		if (msp_sleep(state, 200))
+			goto restart;
+
+		/* carrier detect pass #1 -- main carrier */
+		cd = msp3400c_carrier_detect_main;
+		count = ARRAY_SIZE(msp3400c_carrier_detect_main);
+
+		if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
+			/* autodetect doesn't work well with AM ... */
+			max1 = 3;
+			count = 0;
+			dev_dbg_lvl(&client->dev, 1, msp_debug, "AM sound override\n");
+		}
+
+		for (i = 0; i < count; i++) {
+			msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
+			if (msp_sleep(state, 100))
+				goto restart;
+			val = msp_read_dsp(client, 0x1b);
+			if (val > 32767)
+				val -= 65536;
+			if (val1 < val) {
+				val1 = val;
+				max1 = i;
+			}
+			dev_dbg_lvl(&client->dev, 1, msp_debug,
+				"carrier1 val: %5d / %s\n", val, cd[i].name);
+		}
+
+		/* carrier detect pass #2 -- second (stereo) carrier */
+		switch (max1) {
+		case 1: /* 5.5 */
+			cd = msp3400c_carrier_detect_55;
+			count = ARRAY_SIZE(msp3400c_carrier_detect_55);
+			break;
+		case 3: /* 6.5 */
+			cd = msp3400c_carrier_detect_65;
+			count = ARRAY_SIZE(msp3400c_carrier_detect_65);
+			break;
+		case 0: /* 4.5 */
+		case 2: /* 6.0 */
+		default:
+			cd = NULL;
+			count = 0;
+			break;
+		}
+
+		if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) {
+			/* autodetect doesn't work well with AM ... */
+			cd = NULL;
+			count = 0;
+			max2 = 0;
+		}
+		for (i = 0; i < count; i++) {
+			msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo);
+			if (msp_sleep(state, 100))
+				goto restart;
+			val = msp_read_dsp(client, 0x1b);
+			if (val > 32767)
+				val -= 65536;
+			if (val2 < val) {
+				val2 = val;
+				max2 = i;
+			}
+			dev_dbg_lvl(&client->dev, 1, msp_debug,
+				"carrier2 val: %5d / %s\n", val, cd[i].name);
+		}
+
+		/* program the msp3400 according to the results */
+		state->main = msp3400c_carrier_detect_main[max1].cdo;
+		switch (max1) {
+		case 1: /* 5.5 */
+			state->detected_std = V4L2_STD_BG | V4L2_STD_PAL_H;
+			if (max2 == 0) {
+				/* B/G FM-stereo */
+				state->second = msp3400c_carrier_detect_55[max2].cdo;
+				msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
+				state->watch_stereo = 1;
+			} else if (max2 == 1 && state->has_nicam) {
+				/* B/G NICAM */
+				state->second = msp3400c_carrier_detect_55[max2].cdo;
+				msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
+				state->nicam_on = 1;
+				state->watch_stereo = 1;
+			} else {
+				goto no_second;
+			}
+			break;
+		case 2: /* 6.0 */
+			/* PAL I NICAM */
+			state->detected_std = V4L2_STD_PAL_I;
+			state->second = MSP_CARRIER(6.552);
+			msp3400c_set_mode(client, MSP_MODE_FM_NICAM2);
+			state->nicam_on = 1;
+			state->watch_stereo = 1;
+			break;
+		case 3: /* 6.5 */
+			if (max2 == 1 || max2 == 2) {
+				/* D/K FM-stereo */
+				state->second = msp3400c_carrier_detect_65[max2].cdo;
+				msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
+				state->watch_stereo = 1;
+				state->detected_std = V4L2_STD_DK;
+			} else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) {
+				/* L NICAM or AM-mono */
+				state->second = msp3400c_carrier_detect_65[max2].cdo;
+				msp3400c_set_mode(client, MSP_MODE_AM_NICAM);
+				state->watch_stereo = 1;
+				state->detected_std = V4L2_STD_L;
+			} else if (max2 == 0 && state->has_nicam) {
+				/* D/K NICAM */
+				state->second = msp3400c_carrier_detect_65[max2].cdo;
+				msp3400c_set_mode(client, MSP_MODE_FM_NICAM1);
+				state->nicam_on = 1;
+				state->watch_stereo = 1;
+				state->detected_std = V4L2_STD_DK;
+			} else {
+				goto no_second;
+			}
+			break;
+		case 0: /* 4.5 */
+			state->detected_std = V4L2_STD_MN;
+			fallthrough;
+		default:
+no_second:
+			state->second = msp3400c_carrier_detect_main[max1].cdo;
+			msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
+			break;
+		}
+		msp3400c_set_carrier(client, state->second, state->main);
+
+		/* unmute */
+		state->scan_in_progress = 0;
+		msp3400c_set_audmode(client);
+		msp_update_volume(state);
+
+		if (msp_debug)
+			msp3400c_print_mode(client);
+
+		/* monitor tv audio mode, the first time don't wait
+		   so long to get a quick stereo/bilingual result */
+		count = 3;
+		while (state->watch_stereo) {
+			if (msp_sleep(state, count ? 1000 : 5000))
+				goto restart;
+			if (count)
+				count--;
+			watch_stereo(client);
+		}
+	}
+	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
+	return 0;
+}
+
+
+int msp3410d_thread(void *data)
+{
+	struct i2c_client *client = data;
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+	int val, i, std, count;
+
+	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3410 daemon started\n");
+	state->detected_std = V4L2_STD_ALL;
+	set_freezable();
+	for (;;) {
+		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: sleep\n");
+		msp_sleep(state, -1);
+		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: wakeup\n");
+
+restart:
+		dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n");
+		state->restart = 0;
+		if (kthread_should_stop())
+			break;
+
+		if (state->mode == MSP_MODE_EXTERN) {
+			/* no carrier scan needed, just unmute */
+			dev_dbg_lvl(&client->dev, 1, msp_debug,
+				"thread: no carrier scan\n");
+			state->scan_in_progress = 0;
+			msp_update_volume(state);
+			continue;
+		}
+
+		/* mute audio */
+		state->scan_in_progress = 1;
+		msp_update_volume(state);
+
+		/* start autodetect. Note: autodetect is not supported for
+		   NTSC-M and radio, hence we force the standard in those
+		   cases. */
+		if (state->radio)
+			std = 0x40;
+		else
+			std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1;
+		state->watch_stereo = 0;
+		state->nicam_on = 0;
+
+		/* wait for tuner to settle down after a channel change */
+		if (msp_sleep(state, 200))
+			goto restart;
+
+		if (msp_debug)
+			dev_dbg_lvl(&client->dev, 2, msp_debug,
+				"setting standard: %s (0x%04x)\n",
+				msp_standard_std_name(std), std);
+
+		if (std != 1) {
+			/* programmed some specific mode */
+			val = std;
+		} else {
+			/* triggered autodetect */
+			msp_write_dem(client, 0x20, std);
+			for (;;) {
+				if (msp_sleep(state, 100))
+					goto restart;
+
+				/* check results */
+				val = msp_read_dem(client, 0x7e);
+				if (val < 0x07ff)
+					break;
+				dev_dbg_lvl(&client->dev, 2, msp_debug,
+					"detection still in progress\n");
+			}
+		}
+		for (i = 0; msp_stdlist[i].name != NULL; i++)
+			if (msp_stdlist[i].retval == val)
+				break;
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "current standard: %s (0x%04x)\n",
+			msp_standard_std_name(val), val);
+		state->main   = msp_stdlist[i].main;
+		state->second = msp_stdlist[i].second;
+		state->std = val;
+		state->rxsubchans = V4L2_TUNER_SUB_MONO;
+
+		if (msp_amsound && !state->radio &&
+		    (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) {
+			/* autodetection has failed, let backup */
+			dev_dbg_lvl(&client->dev, 1, msp_debug, "autodetection failed, switching to backup standard: %s (0x%04x)\n",
+				msp_stdlist[8].name ?
+					msp_stdlist[8].name : "unknown", val);
+			state->std = val = 0x0009;
+			msp_write_dem(client, 0x20, val);
+		} else {
+			state->detected_std = msp_standard_std(state->std);
+		}
+
+		/* set stereo */
+		switch (val) {
+		case 0x0008: /* B/G NICAM */
+		case 0x000a: /* I NICAM */
+		case 0x000b: /* D/K NICAM */
+			if (val == 0x000a)
+				state->mode = MSP_MODE_FM_NICAM2;
+			else
+				state->mode = MSP_MODE_FM_NICAM1;
+			/* just turn on stereo */
+			state->nicam_on = 1;
+			state->watch_stereo = 1;
+			break;
+		case 0x0009:
+			state->mode = MSP_MODE_AM_NICAM;
+			state->nicam_on = 1;
+			state->watch_stereo = 1;
+			break;
+		case 0x0020: /* BTSC */
+			/* The pre-'G' models only have BTSC-mono */
+			state->mode = MSP_MODE_BTSC;
+			break;
+		case 0x0040: /* FM radio */
+			state->mode = MSP_MODE_FM_RADIO;
+			state->rxsubchans = V4L2_TUNER_SUB_STEREO;
+			/* not needed in theory if we have radio, but
+			   short programming enables carrier mute */
+			msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
+			msp3400c_set_carrier(client, MSP_CARRIER(10.7),
+					    MSP_CARRIER(10.7));
+			break;
+		case 0x0002:
+		case 0x0003:
+		case 0x0004:
+		case 0x0005:
+			state->mode = MSP_MODE_FM_TERRA;
+			state->watch_stereo = 1;
+			break;
+		}
+
+		/* set various prescales */
+		msp_write_dsp(client, 0x0d, 0x1900); /* scart */
+		msp_write_dsp(client, 0x0e, 0x3000); /* FM */
+		if (state->has_nicam)
+			msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
+
+		if (state->has_i2s_conf)
+			msp_write_dem(client, 0x40, state->i2s_mode);
+
+		/* unmute */
+		msp3400c_set_audmode(client);
+		state->scan_in_progress = 0;
+		msp_update_volume(state);
+
+		/* monitor tv audio mode, the first time don't wait
+		   so long to get a quick stereo/bilingual result */
+		count = 3;
+		while (state->watch_stereo) {
+			if (msp_sleep(state, count ? 1000 : 5000))
+				goto restart;
+			if (count)
+				count--;
+			watch_stereo(client);
+		}
+	}
+	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
+	return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+/* msp34xxG + (autoselect no-thread)
+ * this one uses both automatic standard detection and automatic sound
+ * select which are available in the newer G versions
+ * struct msp: only norm, acb and source are really used in this mode
+ */
+
+static int msp34xxg_modus(struct i2c_client *client)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+
+	if (state->radio) {
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected radio modus\n");
+		return 0x0001;
+	}
+	if (state->v4l2_std == V4L2_STD_NTSC_M_JP) {
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (EIA-J) modus\n");
+		return 0x4001;
+	}
+	if (state->v4l2_std == V4L2_STD_NTSC_M_KR) {
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (A2) modus\n");
+		return 0x0001;
+	}
+	if (state->v4l2_std == V4L2_STD_SECAM_L) {
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected SECAM-L modus\n");
+		return 0x6001;
+	}
+	if (state->v4l2_std & V4L2_STD_MN) {
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (BTSC) modus\n");
+		return 0x2001;
+	}
+	return 0x7001;
+}
+
+static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+	int source, matrix;
+
+	switch (state->audmode) {
+	case V4L2_TUNER_MODE_MONO:
+		source = 0; /* mono only */
+		matrix = 0x30;
+		break;
+	case V4L2_TUNER_MODE_LANG2:
+		source = 4; /* stereo or B */
+		matrix = 0x10;
+		break;
+	case V4L2_TUNER_MODE_LANG1_LANG2:
+		source = 1; /* stereo or A|B */
+		matrix = 0x20;
+		break;
+	case V4L2_TUNER_MODE_LANG1:
+		source = 3; /* stereo or A */
+		matrix = 0x00;
+		break;
+	case V4L2_TUNER_MODE_STEREO:
+	default:
+		source = 3; /* stereo or A */
+		matrix = 0x20;
+		break;
+	}
+
+	if (in == MSP_DSP_IN_TUNER)
+		source = (source << 8) | 0x20;
+	/* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14
+	   instead of 11, 12, 13. So we add one for that msp version. */
+	else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic)
+		source = ((in + 1) << 8) | matrix;
+	else
+		source = (in << 8) | matrix;
+
+	dev_dbg_lvl(&client->dev, 1, msp_debug,
+		"set source to %d (0x%x) for output %02x\n", in, source, reg);
+	msp_write_dsp(client, reg, source);
+}
+
+static void msp34xxg_set_sources(struct i2c_client *client)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+	u32 in = state->route_in;
+
+	msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf);
+	/* quasi-peak detector is set to same input as the loudspeaker (MAIN) */
+	msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf);
+	msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf);
+	msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf);
+	if (state->has_scart2_out)
+		msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf);
+	msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf);
+}
+
+/* (re-)initialize the msp34xxg */
+static void msp34xxg_reset(struct i2c_client *client)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+	int tuner = (state->route_in >> 3) & 1;
+	int modus;
+
+	/* initialize std to 1 (autodetect) to signal that no standard is
+	   selected yet. */
+	state->std = 1;
+
+	msp_reset(client);
+
+	if (state->has_i2s_conf)
+		msp_write_dem(client, 0x40, state->i2s_mode);
+
+	/* step-by-step initialisation, as described in the manual */
+	modus = msp34xxg_modus(client);
+	modus |= tuner ? 0x100 : 0;
+	msp_write_dem(client, 0x30, modus);
+
+	/* write the dsps that may have an influence on
+	   standard/audio autodetection right now */
+	msp34xxg_set_sources(client);
+
+	msp_write_dsp(client, 0x0d, 0x1900); /* scart */
+	msp_write_dsp(client, 0x0e, 0x3000); /* FM */
+	if (state->has_nicam)
+		msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
+
+	/* set identification threshold. Personally, I
+	 * I set it to a higher value than the default
+	 * of 0x190 to ignore noisy stereo signals.
+	 * this needs tuning. (recommended range 0x00a0-0x03c0)
+	 * 0x7f0 = forced mono mode
+	 *
+	 * a2 threshold for stereo/bilingual.
+	 * Note: this register is part of the Manual/Compatibility mode.
+	 * It is supported by all 'G'-family chips.
+	 */
+	msp_write_dem(client, 0x22, msp_stereo_thresh);
+}
+
+int msp34xxg_thread(void *data)
+{
+	struct i2c_client *client = data;
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+	int val, i;
+
+	dev_dbg_lvl(&client->dev, 1, msp_debug, "msp34xxg daemon started\n");
+	state->detected_std = V4L2_STD_ALL;
+	set_freezable();
+	for (;;) {
+		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: sleep\n");
+		msp_sleep(state, -1);
+		dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: wakeup\n");
+
+restart:
+		dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: restart scan\n");
+		state->restart = 0;
+		if (kthread_should_stop())
+			break;
+
+		if (state->mode == MSP_MODE_EXTERN) {
+			/* no carrier scan needed, just unmute */
+			dev_dbg_lvl(&client->dev, 1, msp_debug,
+				"thread: no carrier scan\n");
+			state->scan_in_progress = 0;
+			msp_update_volume(state);
+			continue;
+		}
+
+		/* setup the chip*/
+		msp34xxg_reset(client);
+		state->std = state->radio ? 0x40 :
+			(state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
+		msp_write_dem(client, 0x20, state->std);
+		/* start autodetect */
+		if (state->std != 1)
+			goto unmute;
+
+		/* watch autodetect */
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"started autodetect, waiting for result\n");
+		for (i = 0; i < 10; i++) {
+			if (msp_sleep(state, 100))
+				goto restart;
+
+			/* check results */
+			val = msp_read_dem(client, 0x7e);
+			if (val < 0x07ff) {
+				state->std = val;
+				break;
+			}
+			dev_dbg_lvl(&client->dev, 2, msp_debug,
+				"detection still in progress\n");
+		}
+		if (state->std == 1) {
+			dev_dbg_lvl(&client->dev, 1, msp_debug,
+				"detection still in progress after 10 tries. giving up.\n");
+			continue;
+		}
+
+unmute:
+		dev_dbg_lvl(&client->dev, 1, msp_debug,
+			"detected standard: %s (0x%04x)\n",
+			msp_standard_std_name(state->std), state->std);
+		state->detected_std = msp_standard_std(state->std);
+
+		if (state->std == 9) {
+			/* AM NICAM mode */
+			msp_write_dsp(client, 0x0e, 0x7c00);
+		}
+
+		/* unmute: dispatch sound to scart output, set scart volume */
+		msp_update_volume(state);
+
+		/* restore ACB */
+		if (msp_write_dsp(client, 0x13, state->acb))
+			return -1;
+
+		/* the periodic stereo/SAP check is only relevant for
+		   the 0x20 standard (BTSC) */
+		if (state->std != 0x20)
+			continue;
+
+		state->watch_stereo = 1;
+
+		/* monitor tv audio mode, the first time don't wait
+		   in order to get a quick stereo/SAP update */
+		watch_stereo(client);
+		while (state->watch_stereo) {
+			watch_stereo(client);
+			if (msp_sleep(state, 5000))
+				goto restart;
+		}
+	}
+	dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: exit\n");
+	return 0;
+}
+
+static int msp34xxg_detect_stereo(struct i2c_client *client)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+	int status = msp_read_dem(client, 0x0200);
+	int is_bilingual = status & 0x100;
+	int is_stereo = status & 0x40;
+	int oldrx = state->rxsubchans;
+
+	if (state->mode == MSP_MODE_EXTERN)
+		return 0;
+
+	state->rxsubchans = 0;
+	if (is_stereo)
+		state->rxsubchans = V4L2_TUNER_SUB_STEREO;
+	else
+		state->rxsubchans = V4L2_TUNER_SUB_MONO;
+	if (is_bilingual) {
+		if (state->std == 0x20)
+			state->rxsubchans |= V4L2_TUNER_SUB_SAP;
+		else
+			state->rxsubchans =
+				V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
+	}
+	dev_dbg_lvl(&client->dev, 1, msp_debug,
+		"status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
+		status, is_stereo, is_bilingual, state->rxsubchans);
+	return (oldrx != state->rxsubchans);
+}
+
+static void msp34xxg_set_audmode(struct i2c_client *client)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+
+	if (state->std == 0x20) {
+	       if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) &&
+		   (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 ||
+		    state->audmode == V4L2_TUNER_MODE_LANG2)) {
+			msp_write_dem(client, 0x20, 0x21);
+	       } else {
+			msp_write_dem(client, 0x20, 0x20);
+	       }
+	}
+
+	msp34xxg_set_sources(client);
+}
+
+void msp_set_audmode(struct i2c_client *client)
+{
+	struct msp_state *state = to_state(i2c_get_clientdata(client));
+
+	switch (state->opmode) {
+	case OPMODE_MANUAL:
+	case OPMODE_AUTODETECT:
+		msp3400c_set_audmode(client);
+		break;
+	case OPMODE_AUTOSELECT:
+		msp34xxg_set_audmode(client);
+		break;
+	}
+}
+
+int msp_detect_stereo(struct i2c_client *client)
+{
+	struct msp_state *state  = to_state(i2c_get_clientdata(client));
+
+	switch (state->opmode) {
+	case OPMODE_MANUAL:
+	case OPMODE_AUTODETECT:
+		return msp3400c_detect_stereo(client);
+	case OPMODE_AUTOSELECT:
+		return msp34xxg_detect_stereo(client);
+	}
+	return 0;
+}
+