Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1032 insertions, 0 deletions

diff --git a/drivers/media/video/cx88/cx88-tvaudio.c b/drivers/media/video/cx88/cx88-tvaudio.c
new file mode 100644
index 000000000000..f2a9475a2fee
--- /dev/null
+++ b/drivers/media/video/cx88/cx88-tvaudio.c
@@ -0,0 +1,1032 @@
+/*
+    $Id: cx88-tvaudio.c,v 1.34 2005/03/07 16:10:51 kraxel Exp $
+
+    cx88x-audio.c - Conexant CX23880/23881 audio downstream driver driver
+
+     (c) 2001 Michael Eskin, Tom Zakrajsek [Windows version]
+     (c) 2002 Yurij Sysoev <yurij@naturesoft.net>
+     (c) 2003 Gerd Knorr <kraxel@bytesex.org>
+
+    -----------------------------------------------------------------------
+
+    Lot of voodoo here.  Even the data sheet doesn't help to
+    understand what is going on here, the documentation for the audio
+    part of the cx2388x chip is *very* bad.
+
+    Some of this comes from party done linux driver sources I got from
+    [undocumented].
+
+    Some comes from the dscaler sources, one of the dscaler driver guy works
+    for Conexant ...
+
+    -----------------------------------------------------------------------
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/poll.h>
+#include <linux/pci.h>
+#include <linux/signal.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/vmalloc.h>
+#include <linux/init.h>
+#include <linux/smp_lock.h>
+#include <linux/delay.h>
+#include <linux/kthread.h>
+
+#include "cx88.h"
+
+static unsigned int audio_debug = 0;
+module_param(audio_debug,int,0644);
+MODULE_PARM_DESC(audio_debug,"enable debug messages [audio]");
+
+#define dprintk(fmt, arg...)	if (audio_debug) \
+	printk(KERN_DEBUG "%s/0: " fmt, core->name , ## arg)
+
+/* ----------------------------------------------------------- */
+
+static char *aud_ctl_names[64] =
+{
+	[ EN_BTSC_FORCE_MONO       ] = "BTSC_FORCE_MONO",
+	[ EN_BTSC_FORCE_STEREO     ] = "BTSC_FORCE_STEREO",
+	[ EN_BTSC_FORCE_SAP        ] = "BTSC_FORCE_SAP",
+	[ EN_BTSC_AUTO_STEREO      ] = "BTSC_AUTO_STEREO",
+	[ EN_BTSC_AUTO_SAP         ] = "BTSC_AUTO_SAP",
+	[ EN_A2_FORCE_MONO1        ] = "A2_FORCE_MONO1",
+	[ EN_A2_FORCE_MONO2        ] = "A2_FORCE_MONO2",
+	[ EN_A2_FORCE_STEREO       ] = "A2_FORCE_STEREO",
+	[ EN_A2_AUTO_MONO2         ] = "A2_AUTO_MONO2",
+	[ EN_A2_AUTO_STEREO        ] = "A2_AUTO_STEREO",
+	[ EN_EIAJ_FORCE_MONO1      ] = "EIAJ_FORCE_MONO1",
+	[ EN_EIAJ_FORCE_MONO2      ] = "EIAJ_FORCE_MONO2",
+	[ EN_EIAJ_FORCE_STEREO     ] = "EIAJ_FORCE_STEREO",
+	[ EN_EIAJ_AUTO_MONO2       ] = "EIAJ_AUTO_MONO2",
+	[ EN_EIAJ_AUTO_STEREO      ] = "EIAJ_AUTO_STEREO",
+	[ EN_NICAM_FORCE_MONO1     ] = "NICAM_FORCE_MONO1",
+	[ EN_NICAM_FORCE_MONO2     ] = "NICAM_FORCE_MONO2",
+	[ EN_NICAM_FORCE_STEREO    ] = "NICAM_FORCE_STEREO",
+	[ EN_NICAM_AUTO_MONO2      ] = "NICAM_AUTO_MONO2",
+	[ EN_NICAM_AUTO_STEREO     ] = "NICAM_AUTO_STEREO",
+	[ EN_FMRADIO_FORCE_MONO    ] = "FMRADIO_FORCE_MONO",
+	[ EN_FMRADIO_FORCE_STEREO  ] = "FMRADIO_FORCE_STEREO",
+	[ EN_FMRADIO_AUTO_STEREO   ] = "FMRADIO_AUTO_STEREO",
+};
+
+struct rlist {
+	u32 reg;
+	u32 val;
+};
+
+static void set_audio_registers(struct cx88_core *core,
+				const struct rlist *l)
+{
+	int i;
+
+	for (i = 0; l[i].reg; i++) {
+		switch (l[i].reg) {
+		case AUD_PDF_DDS_CNST_BYTE2:
+		case AUD_PDF_DDS_CNST_BYTE1:
+		case AUD_PDF_DDS_CNST_BYTE0:
+		case AUD_QAM_MODE:
+		case AUD_PHACC_FREQ_8MSB:
+		case AUD_PHACC_FREQ_8LSB:
+			cx_writeb(l[i].reg, l[i].val);
+			break;
+		default:
+			cx_write(l[i].reg, l[i].val);
+			break;
+		}
+	}
+}
+
+static void set_audio_start(struct cx88_core *core,
+			    u32 mode, u32 ctl)
+{
+	// mute
+	cx_write(AUD_VOL_CTL,       (1 << 6));
+
+	//  increase level of input by 12dB
+	cx_write(AUD_AFE_12DB_EN,   0x0001);
+
+	// start programming
+	cx_write(AUD_CTL,           0x0000);
+	cx_write(AUD_INIT,          mode);
+	cx_write(AUD_INIT_LD,       0x0001);
+	cx_write(AUD_SOFT_RESET,    0x0001);
+
+	cx_write(AUD_CTL,           ctl);
+}
+
+static void set_audio_finish(struct cx88_core *core)
+{
+	u32 volume;
+
+	if (cx88_boards[core->board].blackbird) {
+		// 'pass-thru mode': this enables the i2s output to the mpeg encoder
+		cx_set(AUD_CTL, 0x2000);
+		cx_write(AUD_I2SOUTPUTCNTL, 1);
+		//cx_write(AUD_APB_IN_RATE_ADJ, 0);
+	}
+
+	// finish programming
+	cx_write(AUD_SOFT_RESET, 0x0000);
+
+	// start audio processing
+	cx_set(AUD_CTL, EN_DAC_ENABLE);
+
+	// unmute
+	volume = cx_sread(SHADOW_AUD_VOL_CTL);
+	cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
+}
+
+/* ----------------------------------------------------------- */
+
+static void set_audio_standard_BTSC(struct cx88_core *core, unsigned int sap)
+{
+	static const struct rlist btsc[] = {
+		/* from dscaler */
+		{ AUD_OUT1_SEL,                0x00000013 },
+		{ AUD_OUT1_SHIFT,              0x00000000 },
+		{ AUD_POLY0_DDS_CONSTANT,      0x0012010c },
+		{ AUD_DMD_RA_DDS,              0x00c3e7aa },
+		{ AUD_DBX_IN_GAIN,             0x00004734 },
+		{ AUD_DBX_WBE_GAIN,            0x00004640 },
+		{ AUD_DBX_SE_GAIN,             0x00008d31 },
+		{ AUD_DCOC_0_SRC,              0x0000001a },
+		{ AUD_IIR1_4_SEL,              0x00000021 },
+		{ AUD_DCOC_PASS_IN,            0x00000003 },
+		{ AUD_DCOC_0_SHIFT_IN0,        0x0000000a },
+		{ AUD_DCOC_0_SHIFT_IN1,        0x00000008 },
+		{ AUD_DCOC_1_SHIFT_IN0,        0x0000000a },
+		{ AUD_DCOC_1_SHIFT_IN1,        0x00000008 },
+		{ AUD_DN0_FREQ,                0x0000283b },
+		{ AUD_DN2_SRC_SEL,             0x00000008 },
+		{ AUD_DN2_FREQ,                0x00003000 },
+		{ AUD_DN2_AFC,                 0x00000002 },
+		{ AUD_DN2_SHFT,                0x00000000 },
+		{ AUD_IIR2_2_SEL,              0x00000020 },
+		{ AUD_IIR2_2_SHIFT,            0x00000000 },
+		{ AUD_IIR2_3_SEL,              0x0000001f },
+		{ AUD_IIR2_3_SHIFT,            0x00000000 },
+		{ AUD_CRDC1_SRC_SEL,           0x000003ce },
+		{ AUD_CRDC1_SHIFT,             0x00000000 },
+		{ AUD_CORDIC_SHIFT_1,          0x00000007 },
+		{ AUD_DCOC_1_SRC,              0x0000001b },
+		{ AUD_DCOC1_SHIFT,             0x00000000 },
+		{ AUD_RDSI_SEL,                0x00000008 },
+		{ AUD_RDSQ_SEL,                0x00000008 },
+		{ AUD_RDSI_SHIFT,              0x00000000 },
+		{ AUD_RDSQ_SHIFT,              0x00000000 },
+		{ AUD_POLYPH80SCALEFAC,        0x00000003 },
+                { /* end of list */ },
+	};
+	static const struct rlist btsc_sap[] = {
+		{ AUD_DBX_IN_GAIN,             0x00007200 },
+		{ AUD_DBX_WBE_GAIN,            0x00006200 },
+		{ AUD_DBX_SE_GAIN,             0x00006200 },
+		{ AUD_IIR1_1_SEL,              0x00000000 },
+		{ AUD_IIR1_3_SEL,              0x00000001 },
+		{ AUD_DN1_SRC_SEL,             0x00000007 },
+		{ AUD_IIR1_4_SHIFT,            0x00000006 },
+		{ AUD_IIR2_1_SHIFT,            0x00000000 },
+		{ AUD_IIR2_2_SHIFT,            0x00000000 },
+		{ AUD_IIR3_0_SHIFT,            0x00000000 },
+		{ AUD_IIR3_1_SHIFT,            0x00000000 },
+		{ AUD_IIR3_0_SEL,              0x0000000d },
+		{ AUD_IIR3_1_SEL,              0x0000000e },
+		{ AUD_DEEMPH1_SRC_SEL,         0x00000014 },
+		{ AUD_DEEMPH1_SHIFT,           0x00000000 },
+		{ AUD_DEEMPH1_G0,              0x00004000 },
+		{ AUD_DEEMPH1_A0,              0x00000000 },
+		{ AUD_DEEMPH1_B0,              0x00000000 },
+		{ AUD_DEEMPH1_A1,              0x00000000 },
+		{ AUD_DEEMPH1_B1,              0x00000000 },
+		{ AUD_OUT0_SEL,                0x0000003f },
+		{ AUD_OUT1_SEL,                0x0000003f },
+		{ AUD_DN1_AFC,                 0x00000002 },
+		{ AUD_DCOC_0_SHIFT_IN0,        0x0000000a },
+		{ AUD_DCOC_0_SHIFT_IN1,        0x00000008 },
+		{ AUD_DCOC_1_SHIFT_IN0,        0x0000000a },
+		{ AUD_DCOC_1_SHIFT_IN1,        0x00000008 },
+		{ AUD_IIR1_0_SEL,              0x0000001d },
+		{ AUD_IIR1_2_SEL,              0x0000001e },
+		{ AUD_IIR2_1_SEL,              0x00000002 },
+		{ AUD_IIR2_2_SEL,              0x00000004 },
+		{ AUD_IIR3_2_SEL,              0x0000000f },
+		{ AUD_DCOC2_SHIFT,             0x00000001 },
+		{ AUD_IIR3_2_SHIFT,            0x00000001 },
+		{ AUD_DEEMPH0_SRC_SEL,         0x00000014 },
+		{ AUD_CORDIC_SHIFT_1,          0x00000006 },
+		{ AUD_POLY0_DDS_CONSTANT,      0x000e4db2 },
+		{ AUD_DMD_RA_DDS,              0x00f696e6 },
+		{ AUD_IIR2_3_SEL,              0x00000025 },
+		{ AUD_IIR1_4_SEL,              0x00000021 },
+		{ AUD_DN1_FREQ,                0x0000c965 },
+		{ AUD_DCOC_PASS_IN,            0x00000003 },
+		{ AUD_DCOC_0_SRC,              0x0000001a },
+		{ AUD_DCOC_1_SRC,              0x0000001b },
+		{ AUD_DCOC1_SHIFT,             0x00000000 },
+		{ AUD_RDSI_SEL,                0x00000009 },
+		{ AUD_RDSQ_SEL,                0x00000009 },
+		{ AUD_RDSI_SHIFT,              0x00000000 },
+		{ AUD_RDSQ_SHIFT,              0x00000000 },
+		{ AUD_POLYPH80SCALEFAC,        0x00000003 },
+                { /* end of list */ },
+	};
+
+	// dscaler: exactly taken from driver,
+	// dscaler: don't know why to set EN_FMRADIO_EN_RDS
+	if (sap) {
+		dprintk("%s SAP (status: unknown)\n",__FUNCTION__);
+		set_audio_start(core, 0x0001,
+				EN_FMRADIO_EN_RDS | EN_BTSC_FORCE_SAP);
+		set_audio_registers(core, btsc_sap);
+	} else {
+		dprintk("%s (status: known-good)\n",__FUNCTION__);
+		set_audio_start(core, 0x0001,
+				EN_FMRADIO_EN_RDS | EN_BTSC_AUTO_STEREO);
+		set_audio_registers(core, btsc);
+	}
+	set_audio_finish(core);
+}
+
+#if 0
+static void set_audio_standard_NICAM(struct cx88_core *core)
+{
+	static const struct rlist nicam_common[] = {
+		/* from dscaler */
+    		{ AUD_RATE_ADJ1,           0x00000010 },
+    		{ AUD_RATE_ADJ2,           0x00000040 },
+    		{ AUD_RATE_ADJ3,           0x00000100 },
+    		{ AUD_RATE_ADJ4,           0x00000400 },
+    		{ AUD_RATE_ADJ5,           0x00001000 },
+    //		{ AUD_DMD_RA_DDS,          0x00c0d5ce },
+
+		// Deemphasis 1:
+		{ AUD_DEEMPHGAIN_R,        0x000023c2 },
+		{ AUD_DEEMPHNUMER1_R,      0x0002a7bc },
+		{ AUD_DEEMPHNUMER2_R,      0x0003023e },
+		{ AUD_DEEMPHDENOM1_R,      0x0000f3d0 },
+		{ AUD_DEEMPHDENOM2_R,      0x00000000 },
+
+#if 0
+		// Deemphasis 2: (other tv norm?)
+		{ AUD_DEEMPHGAIN_R,        0x0000c600 },
+		{ AUD_DEEMPHNUMER1_R,      0x00066738 },
+		{ AUD_DEEMPHNUMER2_R,      0x00066739 },
+		{ AUD_DEEMPHDENOM1_R,      0x0001e88c },
+		{ AUD_DEEMPHDENOM2_R,      0x0001e88c },
+#endif
+
+		{ AUD_DEEMPHDENOM2_R,      0x00000000 },
+		{ AUD_ERRLOGPERIOD_R,      0x00000fff },
+		{ AUD_ERRINTRPTTHSHLD1_R,  0x000003ff },
+		{ AUD_ERRINTRPTTHSHLD2_R,  0x000000ff },
+		{ AUD_ERRINTRPTTHSHLD3_R,  0x0000003f },
+		{ AUD_POLYPH80SCALEFAC,    0x00000003 },
+
+		// setup QAM registers
+		{ AUD_PDF_DDS_CNST_BYTE2,  0x06 },
+		{ AUD_PDF_DDS_CNST_BYTE1,  0x82 },
+		{ AUD_PDF_DDS_CNST_BYTE0,  0x16 },
+		{ AUD_QAM_MODE,            0x05 },
+
+                { /* end of list */ },
+        };
+	static const struct rlist nicam_pal_i[] = {
+		{ AUD_PDF_DDS_CNST_BYTE0,  0x12 },
+		{ AUD_PHACC_FREQ_8MSB,     0x3a },
+		{ AUD_PHACC_FREQ_8LSB,     0x93 },
+
+                { /* end of list */ },
+	};
+	static const struct rlist nicam_default[] = {
+		{ AUD_PDF_DDS_CNST_BYTE0,  0x16 },
+		{ AUD_PHACC_FREQ_8MSB,     0x34 },
+		{ AUD_PHACC_FREQ_8LSB,     0x4c },
+
+                { /* end of list */ },
+	};
+
+        set_audio_start(core, 0x0010,
+			EN_DMTRX_LR | EN_DMTRX_BYPASS | EN_NICAM_AUTO_STEREO);
+        set_audio_registers(core, nicam_common);
+	switch (core->tvaudio) {
+	case WW_NICAM_I:
+		dprintk("%s PAL-I NICAM (status: unknown)\n",__FUNCTION__);
+		set_audio_registers(core, nicam_pal_i);
+		break;
+	case WW_NICAM_BGDKL:
+		dprintk("%s PAL-BGDK NICAM (status: unknown)\n",__FUNCTION__);
+		set_audio_registers(core, nicam_default);
+		break;
+	};
+        set_audio_finish(core);
+}
+#endif
+
+static void set_audio_standard_NICAM_L(struct cx88_core *core, int stereo)
+{
+        /* This is probably weird..
+         * Let's operate and find out. */
+
+        static const struct rlist nicam_l_mono[] = {
+                { AUD_ERRLOGPERIOD_R,     0x00000064 },
+                { AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF },
+                { AUD_ERRINTRPTTHSHLD2_R, 0x0000001F },
+                { AUD_ERRINTRPTTHSHLD3_R, 0x0000000F },
+
+                { AUD_PDF_DDS_CNST_BYTE2, 0x48 },
+                { AUD_PDF_DDS_CNST_BYTE1, 0x3D },
+                { AUD_QAM_MODE,           0x00 },
+                { AUD_PDF_DDS_CNST_BYTE0, 0xf5 },
+                { AUD_PHACC_FREQ_8MSB,    0x3a },
+                { AUD_PHACC_FREQ_8LSB,    0x4a },
+
+                { AUD_DEEMPHGAIN_R, 0x6680 },
+                { AUD_DEEMPHNUMER1_R, 0x353DE },
+                { AUD_DEEMPHNUMER2_R, 0x1B1 },
+                { AUD_DEEMPHDENOM1_R, 0x0F3D0 },
+                { AUD_DEEMPHDENOM2_R, 0x0 },
+                { AUD_FM_MODE_ENABLE, 0x7 },
+                { AUD_POLYPH80SCALEFAC, 0x3 },
+                { AUD_AFE_12DB_EN, 0x1 },
+                { AAGC_GAIN, 0x0 },
+                { AAGC_HYST, 0x18 },
+                { AAGC_DEF, 0x20 },
+                { AUD_DN0_FREQ, 0x0 },
+                { AUD_POLY0_DDS_CONSTANT, 0x0E4DB2 },
+                { AUD_DCOC_0_SRC, 0x21 },
+                { AUD_IIR1_0_SEL, 0x0 },
+                { AUD_IIR1_0_SHIFT, 0x7 },
+                { AUD_IIR1_1_SEL, 0x2 },
+                { AUD_IIR1_1_SHIFT, 0x0 },
+                { AUD_DCOC_1_SRC, 0x3 },
+                { AUD_DCOC1_SHIFT, 0x0 },
+                { AUD_DCOC_PASS_IN, 0x0 },
+                { AUD_IIR1_2_SEL, 0x23 },
+                { AUD_IIR1_2_SHIFT, 0x0 },
+                { AUD_IIR1_3_SEL, 0x4 },
+                { AUD_IIR1_3_SHIFT, 0x7 },
+                { AUD_IIR1_4_SEL, 0x5 },
+                { AUD_IIR1_4_SHIFT, 0x7 },
+                { AUD_IIR3_0_SEL, 0x7 },
+                { AUD_IIR3_0_SHIFT, 0x0 },
+                { AUD_DEEMPH0_SRC_SEL, 0x11 },
+                { AUD_DEEMPH0_SHIFT, 0x0 },
+                { AUD_DEEMPH0_G0, 0x7000 },
+                { AUD_DEEMPH0_A0, 0x0 },
+                { AUD_DEEMPH0_B0, 0x0 },
+                { AUD_DEEMPH0_A1, 0x0 },
+                { AUD_DEEMPH0_B1, 0x0 },
+                { AUD_DEEMPH1_SRC_SEL, 0x11 },
+                { AUD_DEEMPH1_SHIFT, 0x0 },
+                { AUD_DEEMPH1_G0, 0x7000 },
+                { AUD_DEEMPH1_A0, 0x0 },
+                { AUD_DEEMPH1_B0, 0x0 },
+                { AUD_DEEMPH1_A1, 0x0 },
+                { AUD_DEEMPH1_B1, 0x0 },
+                { AUD_OUT0_SEL, 0x3F },
+                { AUD_OUT1_SEL, 0x3F },
+                { AUD_DMD_RA_DDS, 0x0F5C285 },
+                { AUD_PLL_INT, 0x1E },
+                { AUD_PLL_DDS, 0x0 },
+                { AUD_PLL_FRAC, 0x0E542 },
+
+                // setup QAM registers
+                { AUD_RATE_ADJ1,      0x00000100 },
+                { AUD_RATE_ADJ2,      0x00000200 },
+                { AUD_RATE_ADJ3,      0x00000300 },
+                { AUD_RATE_ADJ4,      0x00000400 },
+                { AUD_RATE_ADJ5,      0x00000500 },
+                { AUD_RATE_THRES_DMD, 0x000000C0 },
+                { /* end of list */ },
+        };
+
+        static const struct rlist nicam_l[] = {
+                // setup QAM registers
+                { AUD_RATE_ADJ1, 0x00000060 },
+                { AUD_RATE_ADJ2, 0x000000F9 },
+                { AUD_RATE_ADJ3, 0x000001CC },
+                { AUD_RATE_ADJ4, 0x000002B3 },
+                { AUD_RATE_ADJ5, 0x00000726 },
+                { AUD_DEEMPHDENOM1_R, 0x0000F3D0 },
+                { AUD_DEEMPHDENOM2_R, 0x00000000 },
+                { AUD_ERRLOGPERIOD_R, 0x00000064 },
+                { AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF },
+                { AUD_ERRINTRPTTHSHLD2_R, 0x0000001F },
+                { AUD_ERRINTRPTTHSHLD3_R, 0x0000000F },
+                { AUD_POLYPH80SCALEFAC, 0x00000003 },
+                { AUD_DMD_RA_DDS, 0x00C00000 },
+                { AUD_PLL_INT, 0x0000001E },
+                { AUD_PLL_DDS, 0x00000000 },
+                { AUD_PLL_FRAC, 0x0000E542 },
+                { AUD_START_TIMER, 0x00000000 },
+                { AUD_DEEMPHNUMER1_R, 0x000353DE },
+                { AUD_DEEMPHNUMER2_R, 0x000001B1 },
+                { AUD_PDF_DDS_CNST_BYTE2, 0x06 },
+                { AUD_PDF_DDS_CNST_BYTE1, 0x82 },
+                { AUD_QAM_MODE, 0x05 },
+                { AUD_PDF_DDS_CNST_BYTE0, 0x12 },
+                { AUD_PHACC_FREQ_8MSB, 0x34 },
+                { AUD_PHACC_FREQ_8LSB, 0x4C },
+                { AUD_DEEMPHGAIN_R, 0x00006680 },
+                { AUD_RATE_THRES_DMD, 0x000000C0  },
+                { /* end of list */ },
+        } ;
+        dprintk("%s (status: devel), stereo : %d\n",__FUNCTION__,stereo);
+
+        if (!stereo) {
+		/* AM mono sound */
+                set_audio_start(core, 0x0004,
+				0x100c /* FIXME again */);
+                set_audio_registers(core, nicam_l_mono);
+        } else {
+                set_audio_start(core, 0x0010,
+				0x1924 /* FIXME again */);
+                set_audio_registers(core, nicam_l);
+        }
+        set_audio_finish(core);
+
+}
+
+static void set_audio_standard_PAL_I(struct cx88_core *core, int stereo)
+{
+       static const struct rlist pal_i_fm_mono[] = {
+            {AUD_ERRLOGPERIOD_R,       0x00000064},
+            {AUD_ERRINTRPTTHSHLD1_R,   0x00000fff},
+            {AUD_ERRINTRPTTHSHLD2_R,   0x0000001f},
+            {AUD_ERRINTRPTTHSHLD3_R,   0x0000000f},
+            {AUD_PDF_DDS_CNST_BYTE2,   0x06},
+            {AUD_PDF_DDS_CNST_BYTE1,   0x82},
+            {AUD_PDF_DDS_CNST_BYTE0,   0x12},
+            {AUD_QAM_MODE,             0x05},
+            {AUD_PHACC_FREQ_8MSB,      0x3a},
+            {AUD_PHACC_FREQ_8LSB,      0x93},
+            {AUD_DMD_RA_DDS,           0x002a4f2f},
+            {AUD_PLL_INT,              0x0000001e},
+            {AUD_PLL_DDS,              0x00000004},
+            {AUD_PLL_FRAC,             0x0000e542},
+            {AUD_RATE_ADJ1,            0x00000100},
+            {AUD_RATE_ADJ2,            0x00000200},
+            {AUD_RATE_ADJ3,            0x00000300},
+            {AUD_RATE_ADJ4,            0x00000400},
+            {AUD_RATE_ADJ5,            0x00000500},
+            {AUD_THR_FR,               0x00000000},
+            {AUD_PILOT_BQD_1_K0,       0x0000755b},
+            {AUD_PILOT_BQD_1_K1,       0x00551340},
+            {AUD_PILOT_BQD_1_K2,       0x006d30be},
+            {AUD_PILOT_BQD_1_K3,       0xffd394af},
+            {AUD_PILOT_BQD_1_K4,       0x00400000},
+            {AUD_PILOT_BQD_2_K0,       0x00040000},
+            {AUD_PILOT_BQD_2_K1,       0x002a4841},
+            {AUD_PILOT_BQD_2_K2,       0x00400000},
+            {AUD_PILOT_BQD_2_K3,       0x00000000},
+            {AUD_PILOT_BQD_2_K4,       0x00000000},
+            {AUD_MODE_CHG_TIMER,       0x00000060},
+            {AUD_AFE_12DB_EN,          0x00000001},
+            {AAGC_HYST,                0x0000000a},
+            {AUD_CORDIC_SHIFT_0,       0x00000007},
+            {AUD_CORDIC_SHIFT_1,       0x00000007},
+            {AUD_C1_UP_THR,            0x00007000},
+            {AUD_C1_LO_THR,            0x00005400},
+            {AUD_C2_UP_THR,            0x00005400},
+            {AUD_C2_LO_THR,            0x00003000},
+            {AUD_DCOC_0_SRC,           0x0000001a},
+            {AUD_DCOC0_SHIFT,          0x00000000},
+            {AUD_DCOC_0_SHIFT_IN0,     0x0000000a},
+            {AUD_DCOC_0_SHIFT_IN1,     0x00000008},
+            {AUD_DCOC_PASS_IN,         0x00000003},
+            {AUD_IIR3_0_SEL,           0x00000021},
+            {AUD_DN2_AFC,              0x00000002},
+            {AUD_DCOC_1_SRC,           0x0000001b},
+            {AUD_DCOC1_SHIFT,          0x00000000},
+            {AUD_DCOC_1_SHIFT_IN0,     0x0000000a},
+            {AUD_DCOC_1_SHIFT_IN1,     0x00000008},
+            {AUD_IIR3_1_SEL,           0x00000023},
+            {AUD_DN0_FREQ,             0x000035a3},
+            {AUD_DN2_FREQ,             0x000029c7},
+            {AUD_CRDC0_SRC_SEL,        0x00000511},
+            {AUD_IIR1_0_SEL,           0x00000001},
+            {AUD_IIR1_1_SEL,           0x00000000},
+            {AUD_IIR3_2_SEL,           0x00000003},
+            {AUD_IIR3_2_SHIFT,         0x00000000},
+            {AUD_IIR3_0_SEL,           0x00000002},
+            {AUD_IIR2_0_SEL,           0x00000021},
+            {AUD_IIR2_0_SHIFT,         0x00000002},
+            {AUD_DEEMPH0_SRC_SEL,      0x0000000b},
+            {AUD_DEEMPH1_SRC_SEL,      0x0000000b},
+            {AUD_POLYPH80SCALEFAC,     0x00000001},
+            {AUD_START_TIMER,          0x00000000},
+            { /* end of list */ },
+       };
+
+       static const struct rlist pal_i_nicam[] = {
+           { AUD_RATE_ADJ1,           0x00000010 },
+           { AUD_RATE_ADJ2,           0x00000040 },
+           { AUD_RATE_ADJ3,           0x00000100 },
+           { AUD_RATE_ADJ4,           0x00000400 },
+           { AUD_RATE_ADJ5,           0x00001000 },
+	   //     { AUD_DMD_RA_DDS,          0x00c0d5ce },
+	   { AUD_DEEMPHGAIN_R,        0x000023c2 },
+	   { AUD_DEEMPHNUMER1_R,      0x0002a7bc },
+	   { AUD_DEEMPHNUMER2_R,      0x0003023e },
+	   { AUD_DEEMPHDENOM1_R,      0x0000f3d0 },
+	   { AUD_DEEMPHDENOM2_R,      0x00000000 },
+	   { AUD_DEEMPHDENOM2_R,      0x00000000 },
+	   { AUD_ERRLOGPERIOD_R,      0x00000fff },
+	   { AUD_ERRINTRPTTHSHLD1_R,  0x000003ff },
+	   { AUD_ERRINTRPTTHSHLD2_R,  0x000000ff },
+	   { AUD_ERRINTRPTTHSHLD3_R,  0x0000003f },
+	   { AUD_POLYPH80SCALEFAC,    0x00000003 },
+	   { AUD_PDF_DDS_CNST_BYTE2,  0x06 },
+	   { AUD_PDF_DDS_CNST_BYTE1,  0x82 },
+	   { AUD_PDF_DDS_CNST_BYTE0,  0x16 },
+	   { AUD_QAM_MODE,            0x05 },
+	   { AUD_PDF_DDS_CNST_BYTE0,  0x12 },
+	   { AUD_PHACC_FREQ_8MSB,     0x3a },
+	   { AUD_PHACC_FREQ_8LSB,     0x93 },
+            { /* end of list */ },
+        };
+
+        dprintk("%s (status: devel), stereo : %d\n",__FUNCTION__,stereo);
+
+        if (!stereo) {
+		// FM mono
+		set_audio_start(core, 0x0004, EN_DMTRX_SUMDIFF | EN_A2_FORCE_MONO1);
+		set_audio_registers(core, pal_i_fm_mono);
+        } else {
+		// Nicam Stereo
+		set_audio_start(core, 0x0010, EN_DMTRX_LR | EN_DMTRX_BYPASS | EN_NICAM_AUTO_STEREO);
+		set_audio_registers(core, pal_i_nicam);
+        }
+        set_audio_finish(core);
+}
+
+static void set_audio_standard_A2(struct cx88_core *core)
+{
+	/* from dscaler cvs */
+	static const struct rlist a2_common[] = {
+		{ AUD_PDF_DDS_CNST_BYTE2,     0x06 },
+		{ AUD_PDF_DDS_CNST_BYTE1,     0x82 },
+		{ AUD_PDF_DDS_CNST_BYTE0,     0x12 },
+		{ AUD_QAM_MODE,		      0x05 },
+		{ AUD_PHACC_FREQ_8MSB,	      0x34 },
+		{ AUD_PHACC_FREQ_8LSB,	      0x4c },
+
+		{ AUD_RATE_ADJ1,	0x00001000 },
+		{ AUD_RATE_ADJ2,	0x00002000 },
+		{ AUD_RATE_ADJ3,	0x00003000 },
+		{ AUD_RATE_ADJ4,	0x00004000 },
+		{ AUD_RATE_ADJ5,	0x00005000 },
+		{ AUD_THR_FR,		0x00000000 },
+		{ AAGC_HYST,		0x0000001a },
+		{ AUD_PILOT_BQD_1_K0,	0x0000755b },
+		{ AUD_PILOT_BQD_1_K1,	0x00551340 },
+		{ AUD_PILOT_BQD_1_K2,	0x006d30be },
+		{ AUD_PILOT_BQD_1_K3,	0xffd394af },
+		{ AUD_PILOT_BQD_1_K4,	0x00400000 },
+		{ AUD_PILOT_BQD_2_K0,	0x00040000 },
+		{ AUD_PILOT_BQD_2_K1,	0x002a4841 },
+		{ AUD_PILOT_BQD_2_K2,	0x00400000 },
+		{ AUD_PILOT_BQD_2_K3,	0x00000000 },
+		{ AUD_PILOT_BQD_2_K4,	0x00000000 },
+		{ AUD_MODE_CHG_TIMER,	0x00000040 },
+		{ AUD_START_TIMER,	0x00000200 },
+		{ AUD_AFE_12DB_EN,	0x00000000 },
+		{ AUD_CORDIC_SHIFT_0,	0x00000007 },
+		{ AUD_CORDIC_SHIFT_1,	0x00000007 },
+		{ AUD_DEEMPH0_G0,	0x00000380 },
+		{ AUD_DEEMPH1_G0,	0x00000380 },
+		{ AUD_DCOC_0_SRC,	0x0000001a },
+		{ AUD_DCOC0_SHIFT,	0x00000000 },
+		{ AUD_DCOC_0_SHIFT_IN0,	0x0000000a },
+		{ AUD_DCOC_0_SHIFT_IN1,	0x00000008 },
+		{ AUD_DCOC_PASS_IN,	0x00000003 },
+		{ AUD_IIR3_0_SEL,	0x00000021 },
+		{ AUD_DN2_AFC,		0x00000002 },
+		{ AUD_DCOC_1_SRC,	0x0000001b },
+		{ AUD_DCOC1_SHIFT,	0x00000000 },
+		{ AUD_DCOC_1_SHIFT_IN0,	0x0000000a },
+		{ AUD_DCOC_1_SHIFT_IN1,	0x00000008 },
+		{ AUD_IIR3_1_SEL,	0x00000023 },
+		{ AUD_RDSI_SEL,		0x00000017 },
+		{ AUD_RDSI_SHIFT,	0x00000000 },
+		{ AUD_RDSQ_SEL,		0x00000017 },
+		{ AUD_RDSQ_SHIFT,	0x00000000 },
+		{ AUD_POLYPH80SCALEFAC,	0x00000001 },
+
+		{ /* end of list */ },
+	};
+
+	static const struct rlist a2_table1[] = {
+		// PAL-BG
+		{ AUD_DMD_RA_DDS,	0x002a73bd },
+		{ AUD_C1_UP_THR,	0x00007000 },
+		{ AUD_C1_LO_THR,	0x00005400 },
+		{ AUD_C2_UP_THR,	0x00005400 },
+		{ AUD_C2_LO_THR,	0x00003000 },
+		{ /* end of list */ },
+	};
+	static const struct rlist a2_table2[] = {
+		// PAL-DK
+		{ AUD_DMD_RA_DDS,	0x002a73bd },
+		{ AUD_C1_UP_THR,	0x00007000 },
+		{ AUD_C1_LO_THR,	0x00005400 },
+		{ AUD_C2_UP_THR,	0x00005400 },
+		{ AUD_C2_LO_THR,	0x00003000 },
+		{ AUD_DN0_FREQ,		0x00003a1c },
+		{ AUD_DN2_FREQ,		0x0000d2e0 },
+		{ /* end of list */ },
+	};
+	static const struct rlist a2_table3[] = {
+		// unknown, probably NTSC-M
+		{ AUD_DMD_RA_DDS,	0x002a2873 },
+		{ AUD_C1_UP_THR,	0x00003c00 },
+		{ AUD_C1_LO_THR,	0x00003000 },
+		{ AUD_C2_UP_THR,	0x00006000 },
+		{ AUD_C2_LO_THR,	0x00003c00 },
+		{ AUD_DN0_FREQ,		0x00002836 },
+		{ AUD_DN1_FREQ,		0x00003418 },
+		{ AUD_DN2_FREQ,		0x000029c7 },
+		{ AUD_POLY0_DDS_CONSTANT, 0x000a7540 },
+		{ /* end of list */ },
+	};
+
+	set_audio_start(core, 0x0004, EN_DMTRX_SUMDIFF | EN_A2_AUTO_STEREO);
+	set_audio_registers(core, a2_common);
+	switch (core->tvaudio) {
+	case WW_A2_BG:
+		dprintk("%s PAL-BG A2 (status: known-good)\n",__FUNCTION__);
+		set_audio_registers(core, a2_table1);
+		break;
+	case WW_A2_DK:
+		dprintk("%s PAL-DK A2 (status: known-good)\n",__FUNCTION__);
+		set_audio_registers(core, a2_table2);
+		break;
+	case WW_A2_M:
+		dprintk("%s NTSC-M A2 (status: unknown)\n",__FUNCTION__);
+		set_audio_registers(core, a2_table3);
+		break;
+	};
+	set_audio_finish(core);
+}
+
+static void set_audio_standard_EIAJ(struct cx88_core *core)
+{
+	static const struct rlist eiaj[] = {
+		/* TODO: eiaj register settings are not there yet ... */
+
+		{ /* end of list */ },
+	};
+	dprintk("%s (status: unknown)\n",__FUNCTION__);
+
+	set_audio_start(core, 0x0002, EN_EIAJ_AUTO_STEREO);
+	set_audio_registers(core, eiaj);
+	set_audio_finish(core);
+}
+
+static void set_audio_standard_FM(struct cx88_core *core)
+{
+#if 0 /* FIXME */
+	switch (dev->audio_properties.FM_deemphasis)
+	{
+		case WW_FM_DEEMPH_50:
+			//Set De-emphasis filter coefficients for 50 usec
+			cx_write(AUD_DEEMPH0_G0, 0x0C45);
+			cx_write(AUD_DEEMPH0_A0, 0x6262);
+			cx_write(AUD_DEEMPH0_B0, 0x1C29);
+			cx_write(AUD_DEEMPH0_A1, 0x3FC66);
+			cx_write(AUD_DEEMPH0_B1, 0x399A);
+
+			cx_write(AUD_DEEMPH1_G0, 0x0D80);
+			cx_write(AUD_DEEMPH1_A0, 0x6262);
+			cx_write(AUD_DEEMPH1_B0, 0x1C29);
+			cx_write(AUD_DEEMPH1_A1, 0x3FC66);
+			cx_write(AUD_DEEMPH1_B1, 0x399A);
+
+			break;
+
+		case WW_FM_DEEMPH_75:
+			//Set De-emphasis filter coefficients for 75 usec
+			cx_write(AUD_DEEMPH0_G0, 0x91B );
+			cx_write(AUD_DEEMPH0_A0, 0x6B68);
+			cx_write(AUD_DEEMPH0_B0, 0x11EC);
+			cx_write(AUD_DEEMPH0_A1, 0x3FC66);
+			cx_write(AUD_DEEMPH0_B1, 0x399A);
+
+			cx_write(AUD_DEEMPH1_G0, 0xAA0 );
+			cx_write(AUD_DEEMPH1_A0, 0x6B68);
+			cx_write(AUD_DEEMPH1_B0, 0x11EC);
+			cx_write(AUD_DEEMPH1_A1, 0x3FC66);
+			cx_write(AUD_DEEMPH1_B1, 0x399A);
+
+			break;
+	}
+#endif
+
+	dprintk("%s (status: unknown)\n",__FUNCTION__);
+	set_audio_start(core, 0x0020, EN_FMRADIO_AUTO_STEREO);
+
+	// AB: 10/2/01: this register is not being reset appropriately on occasion.
+	cx_write(AUD_POLYPH80SCALEFAC,3);
+
+	set_audio_finish(core);
+}
+
+/* ----------------------------------------------------------- */
+
+void cx88_set_tvaudio(struct cx88_core *core)
+{
+	switch (core->tvaudio) {
+	case WW_BTSC:
+		set_audio_standard_BTSC(core,0);
+		break;
+	case WW_NICAM_BGDKL:
+		set_audio_standard_NICAM_L(core,0);
+		break;
+	case WW_NICAM_I:
+		set_audio_standard_PAL_I(core,0);
+		break;
+	case WW_A2_BG:
+	case WW_A2_DK:
+	case WW_A2_M:
+		set_audio_standard_A2(core);
+		break;
+	case WW_EIAJ:
+		set_audio_standard_EIAJ(core);
+		break;
+	case WW_FM:
+		set_audio_standard_FM(core);
+		break;
+	case WW_SYSTEM_L_AM:
+		set_audio_standard_NICAM_L(core, 1);
+		break;
+	case WW_NONE:
+	default:
+		printk("%s/0: unknown tv audio mode [%d]\n",
+		       core->name, core->tvaudio);
+		break;
+	}
+	return;
+}
+
+void cx88_newstation(struct cx88_core *core)
+{
+	core->audiomode_manual = UNSET;
+
+	switch (core->tvaudio) {
+	case WW_SYSTEM_L_AM:
+		/* try nicam ... */
+		core->audiomode_current = V4L2_TUNER_MODE_STEREO;
+		set_audio_standard_NICAM_L(core, 1);
+		break;
+	}
+}
+
+void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
+{
+	static char *m[] = {"stereo", "dual mono", "mono", "sap"};
+	static char *p[] = {"no pilot", "pilot c1", "pilot c2", "?"};
+	u32 reg,mode,pilot;
+
+	reg   = cx_read(AUD_STATUS);
+	mode  = reg & 0x03;
+	pilot = (reg >> 2) & 0x03;
+
+	if (core->astat != reg)
+		dprintk("AUD_STATUS: 0x%x [%s/%s] ctl=%s\n",
+			reg, m[mode], p[pilot],
+			aud_ctl_names[cx_read(AUD_CTL) & 63]);
+	core->astat = reg;
+
+	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->audmode    = V4L2_TUNER_MODE_MONO;
+
+	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;
+		}
+		break;
+	case WW_NICAM_BGDKL:
+		if (0 == mode) {
+			t->audmode = V4L2_TUNER_MODE_STEREO;
+			t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
+		}
+		break;
+        case WW_SYSTEM_L_AM:
+                if (0x0 == mode && !(cx_read(AUD_INIT) & 0x04)) {
+                        t->audmode = V4L2_TUNER_MODE_STEREO;
+			t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
+		}
+                break ;
+	default:
+		/* nothing */
+		break;
+	}
+	return;
+}
+
+void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
+{
+	u32 ctl  = UNSET;
+	u32 mask = UNSET;
+
+	if (manual) {
+		core->audiomode_manual = mode;
+	} else {
+		if (UNSET != core->audiomode_manual)
+			return;
+	}
+	core->audiomode_current = mode;
+
+	switch (core->tvaudio) {
+	case WW_BTSC:
+		switch (mode) {
+		case V4L2_TUNER_MODE_MONO:
+			ctl  = EN_BTSC_FORCE_MONO;
+			mask = 0x3f;
+			break;
+		case V4L2_TUNER_MODE_SAP:
+			ctl  = EN_BTSC_FORCE_SAP;
+			mask = 0x3f;
+			break;
+		case V4L2_TUNER_MODE_STEREO:
+			ctl  = EN_BTSC_AUTO_STEREO;
+			mask = 0x3f;
+			break;
+		}
+		break;
+	case WW_A2_BG:
+	case WW_A2_DK:
+	case WW_A2_M:
+		switch (mode) {
+		case V4L2_TUNER_MODE_MONO:
+		case V4L2_TUNER_MODE_LANG1:
+			ctl  = EN_A2_FORCE_MONO1;
+			mask = 0x3f;
+			break;
+		case V4L2_TUNER_MODE_LANG2:
+			ctl  = EN_A2_AUTO_MONO2;
+			mask = 0x3f;
+			break;
+		case V4L2_TUNER_MODE_STEREO:
+			ctl  = EN_A2_AUTO_STEREO | EN_DMTRX_SUMR;
+			mask = 0x8bf;
+			break;
+		}
+		break;
+	case WW_NICAM_BGDKL:
+		switch (mode) {
+		case V4L2_TUNER_MODE_MONO:
+			ctl  = EN_NICAM_FORCE_MONO1;
+			mask = 0x3f;
+			break;
+		case V4L2_TUNER_MODE_LANG1:
+			ctl  = EN_NICAM_AUTO_MONO2;
+			mask = 0x3f;
+			break;
+		case V4L2_TUNER_MODE_STEREO:
+			ctl  = EN_NICAM_FORCE_STEREO | EN_DMTRX_LR;
+			mask = 0x93f;
+			break;
+		}
+		break;
+	case WW_SYSTEM_L_AM:
+		switch (mode) {
+		case V4L2_TUNER_MODE_MONO:
+		case V4L2_TUNER_MODE_LANG1:  /* FIXME */
+			set_audio_standard_NICAM_L(core, 0);
+			break;
+		case V4L2_TUNER_MODE_STEREO:
+			set_audio_standard_NICAM_L(core, 1);
+			break;
+		}
+		break;
+	case WW_NICAM_I:
+		switch (mode) {
+		case V4L2_TUNER_MODE_MONO:
+		case V4L2_TUNER_MODE_LANG1:
+			set_audio_standard_PAL_I(core, 0);
+			break;
+		case V4L2_TUNER_MODE_STEREO:
+			set_audio_standard_PAL_I(core, 1);
+			break;
+		}
+		break;
+	case WW_FM:
+		switch (mode) {
+		case V4L2_TUNER_MODE_MONO:
+			ctl  = EN_FMRADIO_FORCE_MONO;
+			mask = 0x3f;
+			break;
+		case V4L2_TUNER_MODE_STEREO:
+			ctl  = EN_FMRADIO_AUTO_STEREO;
+			mask = 0x3f;
+			break;
+		}
+		break;
+	}
+
+	if (UNSET != ctl) {
+		dprintk("cx88_set_stereo: mask 0x%x, ctl 0x%x "
+			"[status=0x%x,ctl=0x%x,vol=0x%x]\n",
+			mask, ctl, cx_read(AUD_STATUS),
+			cx_read(AUD_CTL), cx_sread(SHADOW_AUD_VOL_CTL));
+		cx_andor(AUD_CTL, mask, ctl);
+	}
+	return;
+}
+
+int cx88_audio_thread(void *data)
+{
+	struct cx88_core *core = data;
+	struct v4l2_tuner t;
+	u32 mode = 0;
+
+	dprintk("cx88: tvaudio thread started\n");
+	for (;;) {
+		msleep_interruptible(1000);
+		if (kthread_should_stop())
+			break;
+
+		/* 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);
+	}
+
+	dprintk("cx88: tvaudio thread exiting\n");
+	return 0;
+}
+
+/* ----------------------------------------------------------- */
+
+EXPORT_SYMBOL(cx88_set_tvaudio);
+EXPORT_SYMBOL(cx88_newstation);
+EXPORT_SYMBOL(cx88_set_stereo);
+EXPORT_SYMBOL(cx88_get_stereo);
+EXPORT_SYMBOL(cx88_audio_thread);
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */