/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2008 by Michael Sevakis * * Driver for WM8978 audio codec * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include "config.h" #include "system.h" #include "audiohw.h" #include "wmcodec.h" #include "audio.h" //#define LOGF_ENABLE #include "logf.h" /* #define to help adjust lower volume limit */ #define HW_VOL_MIN 0 #define HW_VOL_MUTE 0 #define HW_VOL_MAX 96 #define HW_VOL_ANA_MIN 0 #define HW_VOL_ANA_MAX 63 #define HW_VOL_DIG_MAX 255 #define HW_VOL_DIG_THRESHOLD (HW_VOL_MAX - HW_VOL_ANA_MAX) #define HW_VOL_DIG_MIN (HW_VOL_DIG_MAX - 2*HW_VOL_DIG_THRESHOLD) /* TODO: Define/refine an API for special hardware steps outside the * main codec driver such as special GPIO handling. */ extern void audiohw_enable_headphone_jack(bool enable); const struct sound_settings_info audiohw_settings[] = { [SOUND_VOLUME] = {"dB", 0, 1, -90, 6, -25}, [SOUND_BASS] = {"dB", 0, 1, -12, 12, 0}, [SOUND_TREBLE] = {"dB", 0, 1, -12, 12, 0}, [SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0}, [SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0}, [SOUND_STEREO_WIDTH] = {"%", 0, 5, 0, 250, 100}, #ifdef HAVE_RECORDING [SOUND_LEFT_GAIN] = {"dB", 1, 1,-128, 96, 0}, [SOUND_RIGHT_GAIN] = {"dB", 1, 1,-128, 96, 0}, #if 0 [SOUND_MIC_GAIN] = {"dB", 1, 1,-128, 108, 16}, #endif #endif #if 0 [SOUND_BASS_CUTOFF] = {"", 0, 1, 1, 4, 1}, [SOUND_TREBLE_CUTOFF] = {"", 0, 1, 1, 4, 1}, #endif }; static uint16_t wmc_regs[WMC_NUM_REGISTERS] = { /* Initialized with post-reset default values - the 2-wire interface * cannot be read. Or-in additional bits desired for some registers. */ [0 ... WMC_NUM_REGISTERS-1] = 0x8000, /* To ID invalids in gaps */ [WMC_SOFTWARE_RESET] = 0x000, [WMC_POWER_MANAGEMENT1] = 0x000, [WMC_POWER_MANAGEMENT2] = 0x000, [WMC_POWER_MANAGEMENT3] = 0x000, [WMC_AUDIO_INTERFACE] = 0x050, [WMC_COMPANDING_CTRL] = 0x000, [WMC_CLOCK_GEN_CTRL] = 0x140, [WMC_ADDITIONAL_CTRL] = 0x000, [WMC_GPIO] = 0x000, [WMC_JACK_DETECT_CONTROL1] = 0x000, [WMC_DAC_CONTROL] = 0x000, [WMC_LEFT_DAC_DIGITAL_VOL] = 0x0ff | WMC_VU, [WMC_RIGHT_DAC_DIGITAL_VOL] = 0x0ff | WMC_VU, [WMC_JACK_DETECT_CONTROL2] = 0x000, [WMC_ADC_CONTROL] = 0x100, [WMC_LEFT_ADC_DIGITAL_VOL] = 0x0ff | WMC_VU, [WMC_RIGHT_ADC_DIGITAL_VOL] = 0x0ff | WMC_VU, [WMC_EQ1_LOW_SHELF] = 0x12c, [WMC_EQ2_PEAK1] = 0x02c, [WMC_EQ3_PEAK2] = 0x02c, [WMC_EQ4_PEAK3] = 0x02c, [WMC_EQ5_HIGH_SHELF] = 0x02c, [WMC_DAC_LIMITER1] = 0x032, [WMC_DAC_LIMITER2] = 0x000, [WMC_NOTCH_FILTER1] = 0x000, [WMC_NOTCH_FILTER2] = 0x000, [WMC_NOTCH_FILTER3] = 0x000, [WMC_NOTCH_FILTER4] = 0x000, [WMC_ALC_CONTROL1] = 0x038, [WMC_ALC_CONTROL2] = 0x00b, [WMC_ALC_CONTROL3] = 0x032, [WMC_NOISE_GATE] = 0x000, [WMC_PLL_N] = 0x008, [WMC_PLL_K1] = 0x00c, [WMC_PLL_K2] = 0x093, [WMC_PLL_K3] = 0x0e9, [WMC_3D_CONTROL] = 0x000, [WMC_BEEP_CONTROL] = 0x000, [WMC_INPUT_CTRL] = 0x033, [WMC_LEFT_INP_PGA_GAIN_CTRL] = 0x010, [WMC_RIGHT_INP_PGA_GAIN_CTRL] = 0x010, [WMC_LEFT_ADC_BOOST_CTRL] = 0x100, [WMC_RIGHT_ADC_BOOST_CTRL] = 0x100, [WMC_OUTPUT_CTRL] = 0x002, [WMC_LEFT_MIXER_CTRL] = 0x001, [WMC_RIGHT_MIXER_CTRL] = 0x001, [WMC_LOUT1_HP_VOLUME_CTRL] = 0x039 | WMC_VU | WMC_ZC, [WMC_ROUT1_HP_VOLUME_CTRL] = 0x039 | WMC_VU | WMC_ZC, [WMC_LOUT2_SPK_VOLUME_CTRL] = 0x039 | WMC_VU | WMC_ZC, [WMC_ROUT2_SPK_VOLUME_CTRL] = 0x039 | WMC_VU | WMC_ZC, [WMC_OUT3_MIXER_CTRL] = 0x001, [WMC_OUT4_MONO_MIXER_CTRL] = 0x001, }; struct { int vol_l; int vol_r; bool ahw_mute; } wmc_vol = { HW_VOL_MUTE, HW_VOL_MUTE, false }; static void wmc_write(unsigned int reg, unsigned int val) { if (reg >= WMC_NUM_REGISTERS || (wmc_regs[reg] & 0x8000)) { logf("wm8978 invalid register: %d", reg); return; } wmc_regs[reg] = val & ~0x8000; wmcodec_write(reg, val); } static void wmc_set(unsigned int reg, unsigned int bits) { wmc_write(reg, wmc_regs[reg] | bits); } static void wmc_clear(unsigned int reg, unsigned int bits) { wmc_write(reg, wmc_regs[reg] & ~bits); } static void wmc_write_masked(unsigned int reg, unsigned int bits, unsigned int mask) { wmc_write(reg, (wmc_regs[reg] & ~mask) | (bits & mask)); } /* convert tenth of dB volume (-890..60) to master volume register value * (000000...111111) */ int tenthdb2master(int db) { /* -90dB to +6dB 1dB steps (96 levels) 7bits */ /* 1100000 == +6dB (0x60,96) */ /* 1101010 == 0dB (0x5a,90) */ /* 1000001 == -57dB (0x21,33,DAC) */ /* 0000001 == -89dB (0x01,01) */ /* 0000000 == -90dB (0x00,00,Mute) */ if (db <= VOLUME_MIN) { return 0x0; } else { return (db - VOLUME_MIN) / 10; } } void audiohw_preinit(void) { /* 1. Turn on external power supplies. Wait for supply voltage to settle. */ /* Step 1 should be completed already. Reset and return all registers to * defaults */ wmcodec_write(WMC_SOFTWARE_RESET, 0xff); sleep(HZ/10); /* 2. Mute all analogue outputs */ wmc_set(WMC_LOUT1_HP_VOLUME_CTRL, WMC_MUTE); wmc_set(WMC_ROUT1_HP_VOLUME_CTRL, WMC_MUTE); wmc_set(WMC_LOUT2_SPK_VOLUME_CTRL, WMC_MUTE); wmc_set(WMC_ROUT2_SPK_VOLUME_CTRL, WMC_MUTE); wmc_set(WMC_OUT3_MIXER_CTRL, WMC_MUTE); wmc_set(WMC_OUT4_MONO_MIXER_CTRL, WMC_MUTE); wmc_set(WMC_INPUT_CTRL, 0x000); /* 3. Set L/RMIXEN = 1 and DACENL/R = 1 in register R3. */ wmc_write(WMC_POWER_MANAGEMENT3, WMC_RMIXEN | WMC_LMIXEN | WMC_DACENR | WMC_DACENL); /* 4. Set BUFIOEN = 1 and VMIDSEL[1:0] to required value in register * R1. Wait for VMID supply to settle */ wmc_write(WMC_POWER_MANAGEMENT1, WMC_BUFIOEN | WMC_VMIDSEL_300K); sleep(HZ/10); /* 5. Set BIASEN = 1 in register R1. */ wmc_set(WMC_POWER_MANAGEMENT1, WMC_BIASEN); } void audiohw_postinit(void) { sleep(HZ); /* 6. Set L/ROUTEN = 1 in register R2. */ wmc_write(WMC_POWER_MANAGEMENT2, WMC_LOUT1EN | WMC_ROUT1EN); /* 7. Enable other mixers as required */ /* 8. Enable other outputs as required */ /* 9. Set remaining registers */ wmc_write(WMC_AUDIO_INTERFACE, WMC_WL_16 | WMC_FMT_I2S | WMC_DACLRSWAP | WMC_ADCLRSWAP); wmc_write(WMC_DAC_CONTROL, WMC_DACOSR_128 | WMC_AMUTE); /* Specific to HW clocking */ wmc_write(WMC_CLOCK_GEN_CTRL, WMC_MCLKDIV_1_5 | WMC_BCLKDIV_8 | WMC_MS); wmc_write(WMC_ADDITIONAL_CTRL, WMC_SR_48KHZ); /* 44.1 */ /* Initialize to minimum volume */ wmc_write_masked(WMC_LEFT_DAC_DIGITAL_VOL, HW_VOL_DIG_MIN, WMC_DVOL); wmc_write_masked(WMC_LOUT1_HP_VOLUME_CTRL, HW_VOL_ANA_MIN, WMC_AVOL); wmc_write_masked(WMC_RIGHT_DAC_DIGITAL_VOL, HW_VOL_DIG_MIN, WMC_DVOL); wmc_write_masked(WMC_ROUT1_HP_VOLUME_CTRL, HW_VOL_ANA_MIN, WMC_AVOL); /* ADC silenced */ wmc_write_masked(WMC_LEFT_ADC_DIGITAL_VOL, 0x00, WMC_DVOL); wmc_write_masked(WMC_RIGHT_ADC_DIGITAL_VOL, 0x00, WMC_DVOL); audiohw_enable_headphone_jack(true); } void audiohw_set_headphone_vol(int vol_l, int vol_r) { int prev_l = wmc_vol.vol_l; int prev_r = wmc_vol.vol_r; int dac_l, dac_r; wmc_vol.vol_l = vol_l; wmc_vol.vol_r = vol_r; /* When analogue volume falls below -57dB (0x00) start attenuating the * DAC volume */ if (vol_l >= HW_VOL_DIG_THRESHOLD) { if (vol_l > HW_VOL_MAX) vol_l = HW_VOL_MAX; dac_l = HW_VOL_DIG_MAX; vol_l -= HW_VOL_DIG_THRESHOLD; } else { if (vol_l < HW_VOL_MIN) vol_l = HW_VOL_MIN; dac_l = 2*vol_l + HW_VOL_DIG_MIN; vol_l = HW_VOL_ANA_MIN; } if (vol_r >= HW_VOL_DIG_THRESHOLD) { if (vol_r > HW_VOL_MAX) vol_r = HW_VOL_MAX; dac_r = HW_VOL_DIG_MAX; vol_r -= HW_VOL_DIG_THRESHOLD; } else { if (vol_r < HW_VOL_MIN) vol_r = HW_VOL_MIN; dac_r = 2*vol_r + HW_VOL_DIG_MIN; vol_r = HW_VOL_ANA_MIN; } /* Have to write both channels always to have the latching work */ wmc_write_masked(WMC_LEFT_DAC_DIGITAL_VOL, dac_l, WMC_DVOL); wmc_write_masked(WMC_LOUT1_HP_VOLUME_CTRL, vol_l, WMC_AVOL); wmc_write_masked(WMC_RIGHT_DAC_DIGITAL_VOL, dac_r, WMC_DVOL); wmc_write_masked(WMC_ROUT1_HP_VOLUME_CTRL, vol_r, WMC_AVOL); if (wmc_vol.vol_l > HW_VOL_MUTE) { /* Not muted and going up from mute level? */ if (prev_l <= HW_VOL_MUTE && !wmc_vol.ahw_mute) wmc_clear(WMC_LOUT1_HP_VOLUME_CTRL, WMC_MUTE); } else { /* Going to mute level? */ if (prev_l > HW_VOL_MUTE) wmc_set(WMC_LOUT1_HP_VOLUME_CTRL, WMC_MUTE); } if (wmc_vol.vol_r > HW_VOL_MUTE) { /* Not muted and going up from mute level? */ if (prev_r <= HW_VOL_MIN && !wmc_vol.ahw_mute) wmc_clear(WMC_ROUT1_HP_VOLUME_CTRL, WMC_MUTE); } else { /* Going to mute level? */ if (prev_r > HW_VOL_MUTE) wmc_set(WMC_ROUT1_HP_VOLUME_CTRL, WMC_MUTE); } } void audiohw_close(void) { /* 1. Mute all analogue outputs */ audiohw_mute(true); audiohw_enable_headphone_jack(false); /* 2. Disable power management register 1. R1 = 00 */ wmc_write(WMC_POWER_MANAGEMENT1, 0x000); /* 3. Disable power management register 2. R2 = 00 */ wmc_write(WMC_POWER_MANAGEMENT2, 0x000); /* 4. Disable power management register 3. R3 = 00 */ wmc_write(WMC_POWER_MANAGEMENT3, 0x000); /* 5. Remove external power supplies. */ } void audiohw_mute(bool mute) { wmc_vol.ahw_mute = mute; /* No DAC mute here, please - take care of each enabled output. */ if (mute) { wmc_set(WMC_LOUT1_HP_VOLUME_CTRL, WMC_MUTE); wmc_set(WMC_ROUT1_HP_VOLUME_CTRL, WMC_MUTE); } else { /* Unmute outputs not at mute level */ if (wmc_vol.vol_l > HW_VOL_MUTE) wmc_clear(WMC_LOUT1_HP_VOLUME_CTRL, WMC_MUTE); if (wmc_vol.vol_r > HW_VOL_MUTE) wmc_clear(WMC_ROUT1_HP_VOLUME_CTRL, WMC_MUTE); } } #ifdef HAVE_RECORDING /* TODO */ void audiohw_set_recvol(int left, int right, int type) { (void)left; (void)right; (void)type; } #endif