/* cx88x-audio.c - Conexant CX23880/23881 audio downstream driver driver (c) 2001 Michael Eskin, Tom Zakrajsek [Windows version] (c) 2002 Yurij Sysoev (c) 2003 Gerd Knorr ----------------------------------------------------------------------- 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 #include #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) #include #else #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #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. */ # if 0 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; } # endif 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 */