| /* |
| $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: |
| */ |
