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kernel-fxtec-pro1x/drivers/media/video/cx88/cx88-tvaudio.c
Darron Broad 430189da04 V4L/DVB (9269): cx88: add I2S-ADC tvaudio method 
This adds I2S-ADC tvaudio mode as a formal method of audio
delivery.

This fixes one bug and adds fm audio via I2S-ADC on cards
that support it.

The bug occured before when I2S-ADC mode was initiated on
composite/s-video open but was then reset within 500ms
by the audio thread which used any previous audio tuning
details.

Signed-off-by: Darron Broad <darron@kewl.org>
Signed-off-by: Steven Toth <stoth@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-17 17:29:14 -03:00

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/*
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/errno.h>
#include <linux/freezer.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/poll.h>
#include <linux/signal.h>
#include <linux/ioport.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/vmalloc.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/kthread.h>
#include "cx88.h"
static unsigned int audio_debug;
module_param(audio_debug, int, 0644);
MODULE_PARM_DESC(audio_debug, "enable debug messages [audio]");
static unsigned int always_analog;
module_param(always_analog,int,0644);
MODULE_PARM_DESC(always_analog,"force analog audio out");
static unsigned int radio_deemphasis;
module_param(radio_deemphasis,int,0644);
MODULE_PARM_DESC(radio_deemphasis, "Radio deemphasis time constant, "
"0=None, 1=50us (elsewhere), 2=75us (USA)");
#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)
{
/* mute */
cx_write(AUD_VOL_CTL, (1 << 6));
/* start programming */
cx_write(AUD_INIT, mode);
cx_write(AUD_INIT_LD, 0x0001);
cx_write(AUD_SOFT_RESET, 0x0001);
}
static void set_audio_finish(struct cx88_core *core, u32 ctl)
{
u32 volume;
/* restart dma; This avoids buzz in NICAM and is good in others */
cx88_stop_audio_dma(core);
cx_write(AUD_RATE_THRES_DMD, 0x000000C0);
cx88_start_audio_dma(core);
if (core->board.mpeg & CX88_MPEG_BLACKBIRD) {
cx_write(AUD_I2SINPUTCNTL, 4);
cx_write(AUD_BAUDRATE, 1);
/* 'pass-thru mode': this enables the i2s output to the mpeg encoder */
cx_set(AUD_CTL, EN_I2SOUT_ENABLE);
cx_write(AUD_I2SOUTPUTCNTL, 1);
cx_write(AUD_I2SCNTL, 0);
/* cx_write(AUD_APB_IN_RATE_ADJ, 0); */
}
if ((always_analog) || (!(core->board.mpeg & CX88_MPEG_BLACKBIRD))) {
ctl |= EN_DAC_ENABLE;
cx_write(AUD_CTL, ctl);
}
/* finish programming */
cx_write(AUD_SOFT_RESET, 0x0000);
/* 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,
u32 mode)
{
static const struct rlist btsc[] = {
{AUD_AFE_12DB_EN, 0x00000001},
{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_AFE_12DB_EN, 0x00000001},
{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 */ },
};
mode |= EN_FMRADIO_EN_RDS;
if (sap) {
dprintk("%s SAP (status: unknown)\n", __func__);
set_audio_start(core, SEL_SAP);
set_audio_registers(core, btsc_sap);
set_audio_finish(core, mode);
} else {
dprintk("%s (status: known-good)\n", __func__);
set_audio_start(core, SEL_BTSC);
set_audio_registers(core, btsc);
set_audio_finish(core, mode);
}
}
static void set_audio_standard_NICAM(struct cx88_core *core, u32 mode)
{
static const struct rlist nicam_l[] = {
{AUD_AFE_12DB_EN, 0x00000001},
{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_PDF_DDS_CNST_BYTE0, 0x12},
{AUD_QAM_MODE, 0x05},
{AUD_PHACC_FREQ_8MSB, 0x34},
{AUD_PHACC_FREQ_8LSB, 0x4C},
{AUD_DEEMPHGAIN_R, 0x00006680},
{AUD_RATE_THRES_DMD, 0x000000C0},
{ /* end of list */ },
};
static const struct rlist nicam_bgdki_common[] = {
{AUD_AFE_12DB_EN, 0x00000001},
{AUD_RATE_ADJ1, 0x00000010},
{AUD_RATE_ADJ2, 0x00000040},
{AUD_RATE_ADJ3, 0x00000100},
{AUD_RATE_ADJ4, 0x00000400},
{AUD_RATE_ADJ5, 0x00001000},
{AUD_ERRLOGPERIOD_R, 0x00000fff},
{AUD_ERRINTRPTTHSHLD1_R, 0x000003ff},
{AUD_ERRINTRPTTHSHLD2_R, 0x000000ff},
{AUD_ERRINTRPTTHSHLD3_R, 0x0000003f},
{AUD_POLYPH80SCALEFAC, 0x00000003},
{AUD_DEEMPHGAIN_R, 0x000023c2},
{AUD_DEEMPHNUMER1_R, 0x0002a7bc},
{AUD_DEEMPHNUMER2_R, 0x0003023e},
{AUD_DEEMPHDENOM1_R, 0x0000f3d0},
{AUD_DEEMPHDENOM2_R, 0x00000000},
{AUD_PDF_DDS_CNST_BYTE2, 0x06},
{AUD_PDF_DDS_CNST_BYTE1, 0x82},
{AUD_QAM_MODE, 0x05},
{ /* end of list */ },
};
static const struct rlist nicam_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,SEL_NICAM);
switch (core->tvaudio) {
case WW_L:
dprintk("%s SECAM-L NICAM (status: devel)\n", __func__);
set_audio_registers(core, nicam_l);
break;
case WW_I:
dprintk("%s PAL-I NICAM (status: known-good)\n", __func__);
set_audio_registers(core, nicam_bgdki_common);
set_audio_registers(core, nicam_i);
break;
default:
dprintk("%s PAL-BGDK NICAM (status: known-good)\n", __func__);
set_audio_registers(core, nicam_bgdki_common);
set_audio_registers(core, nicam_default);
break;
};
mode |= EN_DMTRX_LR | EN_DMTRX_BYPASS;
set_audio_finish(core, mode);
}
static void set_audio_standard_A2(struct cx88_core *core, u32 mode)
{
static const struct rlist a2_bgdk_common[] = {
{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, 0x34},
{AUD_PHACC_FREQ_8LSB, 0x4c},
{AUD_RATE_ADJ1, 0x00000100},
{AUD_RATE_ADJ2, 0x00000200},
{AUD_RATE_ADJ3, 0x00000300},
{AUD_RATE_ADJ4, 0x00000400},
{AUD_RATE_ADJ5, 0x00000500},
{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_AFE_12DB_EN, 0x00000001},
{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_PLL_INT, 0x0000001e},
{AUD_PLL_DDS, 0x00000000},
{AUD_PLL_FRAC, 0x0000e542},
{AUD_POLYPH80SCALEFAC, 0x00000001},
{AUD_START_TIMER, 0x00000000},
{ /* end of list */ },
};
static const struct rlist a2_bg[] = {
{AUD_DMD_RA_DDS, 0x002a4f2f},
{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_dk[] = {
{AUD_DMD_RA_DDS, 0x002a4f2f},
{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 a1_i[] = {
{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 am_l[] = {
{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, 0x00006680},
{AUD_DEEMPHNUMER1_R, 0x000353DE},
{AUD_DEEMPHNUMER2_R, 0x000001B1},
{AUD_DEEMPHDENOM1_R, 0x0000F3D0},
{AUD_DEEMPHDENOM2_R, 0x00000000},
{AUD_FM_MODE_ENABLE, 0x00000007},
{AUD_POLYPH80SCALEFAC, 0x00000003},
{AUD_AFE_12DB_EN, 0x00000001},
{AAGC_GAIN, 0x00000000},
{AAGC_HYST, 0x00000018},
{AAGC_DEF, 0x00000020},
{AUD_DN0_FREQ, 0x00000000},
{AUD_POLY0_DDS_CONSTANT, 0x000E4DB2},
{AUD_DCOC_0_SRC, 0x00000021},
{AUD_IIR1_0_SEL, 0x00000000},
{AUD_IIR1_0_SHIFT, 0x00000007},
{AUD_IIR1_1_SEL, 0x00000002},
{AUD_IIR1_1_SHIFT, 0x00000000},
{AUD_DCOC_1_SRC, 0x00000003},
{AUD_DCOC1_SHIFT, 0x00000000},
{AUD_DCOC_PASS_IN, 0x00000000},
{AUD_IIR1_2_SEL, 0x00000023},
{AUD_IIR1_2_SHIFT, 0x00000000},
{AUD_IIR1_3_SEL, 0x00000004},
{AUD_IIR1_3_SHIFT, 0x00000007},
{AUD_IIR1_4_SEL, 0x00000005},
{AUD_IIR1_4_SHIFT, 0x00000007},
{AUD_IIR3_0_SEL, 0x00000007},
{AUD_IIR3_0_SHIFT, 0x00000000},
{AUD_DEEMPH0_SRC_SEL, 0x00000011},
{AUD_DEEMPH0_SHIFT, 0x00000000},
{AUD_DEEMPH0_G0, 0x00007000},
{AUD_DEEMPH0_A0, 0x00000000},
{AUD_DEEMPH0_B0, 0x00000000},
{AUD_DEEMPH0_A1, 0x00000000},
{AUD_DEEMPH0_B1, 0x00000000},
{AUD_DEEMPH1_SRC_SEL, 0x00000011},
{AUD_DEEMPH1_SHIFT, 0x00000000},
{AUD_DEEMPH1_G0, 0x00007000},
{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_DMD_RA_DDS, 0x00F5C285},
{AUD_PLL_INT, 0x0000001E},
{AUD_PLL_DDS, 0x00000000},
{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_RATE_THRES_DMD, 0x000000C0},
{ /* end of list */ },
};
static const struct rlist a2_deemph50[] = {
{AUD_DEEMPH0_G0, 0x00000380},
{AUD_DEEMPH1_G0, 0x00000380},
{AUD_DEEMPHGAIN_R, 0x000011e1},
{AUD_DEEMPHNUMER1_R, 0x0002a7bc},
{AUD_DEEMPHNUMER2_R, 0x0003023c},
{ /* end of list */ },
};
set_audio_start(core, SEL_A2);
switch (core->tvaudio) {
case WW_BG:
dprintk("%s PAL-BG A1/2 (status: known-good)\n", __func__);
set_audio_registers(core, a2_bgdk_common);
set_audio_registers(core, a2_bg);
set_audio_registers(core, a2_deemph50);
break;
case WW_DK:
dprintk("%s PAL-DK A1/2 (status: known-good)\n", __func__);
set_audio_registers(core, a2_bgdk_common);
set_audio_registers(core, a2_dk);
set_audio_registers(core, a2_deemph50);
break;
case WW_I:
dprintk("%s PAL-I A1 (status: known-good)\n", __func__);
set_audio_registers(core, a1_i);
set_audio_registers(core, a2_deemph50);
break;
case WW_L:
dprintk("%s AM-L (status: devel)\n", __func__);
set_audio_registers(core, am_l);
break;
default:
dprintk("%s Warning: wrong value\n", __func__);
return;
break;
};
mode |= EN_FMRADIO_EN_RDS | EN_DMTRX_SUMDIFF;
set_audio_finish(core, mode);
}
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", __func__);
set_audio_start(core, SEL_EIAJ);
set_audio_registers(core, eiaj);
set_audio_finish(core, EN_EIAJ_AUTO_STEREO);
}
static void set_audio_standard_FM(struct cx88_core *core,
enum cx88_deemph_type deemph)
{
static const struct rlist fm_deemph_50[] = {
{AUD_DEEMPH0_G0, 0x0C45},
{AUD_DEEMPH0_A0, 0x6262},
{AUD_DEEMPH0_B0, 0x1C29},
{AUD_DEEMPH0_A1, 0x3FC66},
{AUD_DEEMPH0_B1, 0x399A},
{AUD_DEEMPH1_G0, 0x0D80},
{AUD_DEEMPH1_A0, 0x6262},
{AUD_DEEMPH1_B0, 0x1C29},
{AUD_DEEMPH1_A1, 0x3FC66},
{AUD_DEEMPH1_B1, 0x399A},
{AUD_POLYPH80SCALEFAC, 0x0003},
{ /* end of list */ },
};
static const struct rlist fm_deemph_75[] = {
{AUD_DEEMPH0_G0, 0x091B},
{AUD_DEEMPH0_A0, 0x6B68},
{AUD_DEEMPH0_B0, 0x11EC},
{AUD_DEEMPH0_A1, 0x3FC66},
{AUD_DEEMPH0_B1, 0x399A},
{AUD_DEEMPH1_G0, 0x0AA0},
{AUD_DEEMPH1_A0, 0x6B68},
{AUD_DEEMPH1_B0, 0x11EC},
{AUD_DEEMPH1_A1, 0x3FC66},
{AUD_DEEMPH1_B1, 0x399A},
{AUD_POLYPH80SCALEFAC, 0x0003},
{ /* end of list */ },
};
/* It is enough to leave default values? */
/* No, it's not! The deemphasis registers are reset to the 75us
* values by default. Analyzing the spectrum of the decoded audio
* reveals that "no deemphasis" is the same as 75 us, while the 50 us
* setting results in less deemphasis. */
static const struct rlist fm_no_deemph[] = {
{AUD_POLYPH80SCALEFAC, 0x0003},
{ /* end of list */ },
};
dprintk("%s (status: unknown)\n", __func__);
set_audio_start(core, SEL_FMRADIO);
switch (deemph) {
default:
case FM_NO_DEEMPH:
set_audio_registers(core, fm_no_deemph);
break;
case FM_DEEMPH_50:
set_audio_registers(core, fm_deemph_50);
break;
case FM_DEEMPH_75:
set_audio_registers(core, fm_deemph_75);
break;
}
set_audio_finish(core, EN_FMRADIO_AUTO_STEREO);
}
/* ----------------------------------------------------------- */
static int cx88_detect_nicam(struct cx88_core *core)
{
int i, j = 0;
dprintk("start nicam autodetect.\n");
for (i = 0; i < 6; i++) {
/* if bit1=1 then nicam is detected */
j += ((cx_read(AUD_NICAM_STATUS2) & 0x02) >> 1);
if (j == 1) {
dprintk("nicam is detected.\n");
return 1;
}
/* wait a little bit for next reading status */
msleep(10);
}
dprintk("nicam is not detected.\n");
return 0;
}
void cx88_set_tvaudio(struct cx88_core *core)
{
switch (core->tvaudio) {
case WW_BTSC:
set_audio_standard_BTSC(core, 0, EN_BTSC_AUTO_STEREO);
break;
case WW_BG:
case WW_DK:
case WW_I:
case WW_L:
/* prepare all dsp registers */
set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
/* set nicam mode - otherwise
AUD_NICAM_STATUS2 contains wrong values */
set_audio_standard_NICAM(core, EN_NICAM_AUTO_STEREO);
if (0 == cx88_detect_nicam(core)) {
/* fall back to fm / am mono */
set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
core->use_nicam = 0;
} else {
core->use_nicam = 1;
}
break;
case WW_EIAJ:
set_audio_standard_EIAJ(core);
break;
case WW_FM:
set_audio_standard_FM(core, radio_deemphasis);
break;
case WW_I2SADC:
set_audio_start(core, 0x01);
/* Slave/Philips/Autobaud */
cx_write(AUD_I2SINPUTCNTL, 0);
/* Switch to "I2S ADC mode" */
cx_write(AUD_I2SCNTL, 0x1);
set_audio_finish(core, EN_I2SIN_ENABLE);
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;
}
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;
/* TODO
Reading from AUD_STATUS is not enough
for auto-detecting sap/dual-fm/nicam.
Add some code here later.
*/
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:
set_audio_standard_BTSC(core, 0, EN_BTSC_FORCE_MONO);
break;
case V4L2_TUNER_MODE_LANG1:
set_audio_standard_BTSC(core, 0, EN_BTSC_AUTO_STEREO);
break;
case V4L2_TUNER_MODE_LANG2:
set_audio_standard_BTSC(core, 1, EN_BTSC_FORCE_SAP);
break;
case V4L2_TUNER_MODE_STEREO:
case V4L2_TUNER_MODE_LANG1_LANG2:
set_audio_standard_BTSC(core, 0, EN_BTSC_FORCE_STEREO);
break;
}
break;
case WW_BG:
case WW_DK:
case WW_I:
case WW_L:
if (1 == core->use_nicam) {
switch (mode) {
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_LANG1:
set_audio_standard_NICAM(core,
EN_NICAM_FORCE_MONO1);
break;
case V4L2_TUNER_MODE_LANG2:
set_audio_standard_NICAM(core,
EN_NICAM_FORCE_MONO2);
break;
case V4L2_TUNER_MODE_STEREO:
case V4L2_TUNER_MODE_LANG1_LANG2:
set_audio_standard_NICAM(core,
EN_NICAM_FORCE_STEREO);
break;
}
} else {
if ((core->tvaudio == WW_I) || (core->tvaudio == WW_L)) {
/* fall back to fm / am mono */
set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
} else {
/* TODO: Add A2 autodection */
switch (mode) {
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_LANG1:
set_audio_standard_A2(core,
EN_A2_FORCE_MONO1);
break;
case V4L2_TUNER_MODE_LANG2:
set_audio_standard_A2(core,
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);
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;
case WW_I2SADC:
/* DO NOTHING */
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");
set_freezable();
for (;;) {
msleep_interruptible(1000);
if (kthread_should_stop())
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);
}
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:
* kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
*/
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