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linux-next/drivers/media/video/cx88/cx88-tvaudio.c
Marton Balint 2325a6b986 V4L/DVB (11396): cx88: avoid reprogramming every audio register on A2 stereo/mono change 
This patch changes cx88_set_stereo to avoid resetting all of the audio
registers on stereo/mono change if the audio standard is A2, and set
only the AUD_CTL register. The benefit of this method is that it
eliminates the annoying clicking noise on setting the audio mode to
stereo or mono.

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

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

Signed-off-by: Marton Balint <cus@fazekas.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-16 19:14:18 -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);
core->last_change = jiffies;
}
/* ----------------------------------------------------------- */
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_M:
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->audiomode_current = V4L2_TUNER_MODE_MONO;
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;
core->last_change = jiffies;
}
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 = UNSET;
t->audmode = V4L2_TUNER_MODE_MONO;
switch (mode) {
case 0:
t->audmode = V4L2_TUNER_MODE_STEREO;
break;
case 1:
t->audmode = V4L2_TUNER_MODE_LANG2;
break;
case 2:
t->audmode = V4L2_TUNER_MODE_MONO;
break;
case 3:
t->audmode = V4L2_TUNER_MODE_SAP;
break;
}
switch (core->tvaudio) {
case WW_BTSC:
case WW_BG:
case WW_DK:
case WW_M:
case WW_EIAJ:
if (!core->use_nicam) {
t->rxsubchans = cx88_dsp_detect_stereo_sap(core);
break;
}
break;
default:
/* nothing */
break;
}
/* If software stereo detection is not supported... */
if (UNSET == t->rxsubchans) {
t->rxsubchans = V4L2_TUNER_SUB_MONO;
/* If the hardware itself detected stereo, also return
stereo as an available subchannel */
if (V4L2_TUNER_MODE_STEREO == t->audmode)
t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
}
return;
}
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_M:
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 */
mask = 0x3f;
switch (mode) {
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_LANG1:
ctl = EN_A2_FORCE_MONO1;
break;
case V4L2_TUNER_MODE_LANG2:
ctl = EN_A2_FORCE_MONO2;
break;
case V4L2_TUNER_MODE_STEREO:
case V4L2_TUNER_MODE_LANG1_LANG2:
ctl = 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();
switch (core->tvaudio) {
case WW_BG:
case WW_DK:
case WW_M:
case WW_I:
case WW_L:
if (core->use_nicam)
goto hw_autodetect;
/* just monitor the audio status for now ... */
memset(&t, 0, sizeof(t));
cx88_get_stereo(core, &t);
if (UNSET != core->audiomode_manual)
/* manually set, don't do anything. */
continue;
/* monitor signal and set stereo if available */
if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
mode = V4L2_TUNER_MODE_STEREO;
else
mode = V4L2_TUNER_MODE_MONO;
if (mode == core->audiomode_current)
continue;
/* automatically switch to best available mode */
cx88_set_stereo(core, mode, 0);
break;
default:
hw_autodetect:
/* stereo autodetection is supported by hardware so
we don't need to do it manually. Do nothing. */
break;
}
}
dprintk("cx88: tvaudio thread exiting\n");
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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