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author | Dave Chapman <dave@dchapman.com> | 2006-02-13 13:48:08 +0000 |
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committer | Dave Chapman <dave@dchapman.com> | 2006-02-13 13:48:08 +0000 |
commit | 9581ad39ec15cf20350d01d2787dea0c7db6074d (patch) | |
tree | 28ead339e852346eb9f4e947e3494353cb687d72 /firmware/drivers/wm8758.c | |
parent | b55f20a12d6b68d0f4f53ab19db76e8b5388d8bb (diff) | |
download | rockbox-9581ad39ec15cf20350d01d2787dea0c7db6074d.tar.gz rockbox-9581ad39ec15cf20350d01d2787dea0c7db6074d.zip |
iPod: Audio driver for iPod Video/5G. Rename wm8971_* functions to wmcodec_* to enable unification of the audio code for WM codecs
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8676 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/drivers/wm8758.c')
-rw-r--r-- | firmware/drivers/wm8758.c | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/firmware/drivers/wm8758.c b/firmware/drivers/wm8758.c new file mode 100644 index 0000000000..3069b3cba7 --- /dev/null +++ b/firmware/drivers/wm8758.c @@ -0,0 +1,276 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Driver for WM8758 audio codec + * + * Based on code from the ipodlinux project - http://ipodlinux.org/ + * Adapted for Rockbox in December 2005 + * + * Original file: linux/arch/armnommu/mach-ipod/audio.c + * + * Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org) + * + * 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 "lcd.h" +#include "cpu.h" +#include "kernel.h" +#include "thread.h" +#include "power.h" +#include "debug.h" +#include "system.h" +#include "sprintf.h" +#include "button.h" +#include "string.h" +#include "file.h" +#include "buffer.h" +#include "audio.h" + +#include "i2c-pp5020.h" +#include "wm8758.h" +#include "pcf50605.h" + +void wmcodec_reset(void); + +#define IPOD_PCM_LEVEL 0x65 /* -6dB */ + +//#define BASSCTRL 0x +//#define TREBCTRL 0x0b + +/* + * Reset the I2S BIT.FORMAT I2S, 16bit, FIFO.FORMAT 32bit + */ +static void i2s_reset(void) +{ + /* PP502x */ + + /* I2S soft reset */ + outl(inl(0x70002800) | 0x80000000, 0x70002800); + outl(inl(0x70002800) & ~0x80000000, 0x70002800); + + /* BIT.FORMAT [11:10] = I2S (default) */ + outl(inl(0x70002800) & ~0xc00, 0x70002800); + /* BIT.SIZE [9:8] = 16bit (default) */ + outl(inl(0x70002800) & ~0x300, 0x70002800); + + /* FIFO.FORMAT [6:4] = 32 bit LSB */ + /* since BIT.SIZ < FIFO.FORMAT low 16 bits will be 0 */ + outl(inl(0x70002800) | 0x30, 0x70002800); + + /* RX_ATN_LVL=1 == when 12 slots full */ + /* TX_ATN_LVL=1 == when 12 slots empty */ + outl(inl(0x7000280c) | 0x33, 0x7000280c); + + /* Rx.CLR = 1, TX.CLR = 1 */ + outl(inl(0x7000280c) | 0x1100, 0x7000280c); +} + +void wm8758_write(int reg, int data) +{ + ipod_i2c_send(0x1a, (reg<<1) | ((data&0x100)>>8),data&0xff); +} + +/* + * Initialise the WM8758 for playback via headphone and line out. + * Note, I'm using the WM8750 datasheet as its apparently close. + */ +int wmcodec_init(void) { + /* reset I2C */ + i2c_init(); + + /* normal outputs for CDI and I2S pin groups */ + outl(inl(0x70000020) & ~0x300, 0x70000020); + + /*mini2?*/ + outl(inl(0x70000010) & ~0x3000000, 0x70000010); + /*mini2?*/ + + /* device reset */ + outl(inl(0x60006004) | 0x800, 0x60006004); + outl(inl(0x60006004) & ~0x800, 0x60006004); + + /* device enable */ + outl(inl(0x6000600C) | 0x807, 0x6000600C); + + /* enable external dev clock clocks */ + outl(inl(0x6000600c) | 0x2, 0x6000600c); + + /* external dev clock to 24MHz */ + outl(inl(0x70000018) & ~0xc, 0x70000018); + + return 0; +} + +/* Silently enable / disable audio output */ +void wmcodec_enable_output(bool enable) +{ + if (enable) + { + /* reset the I2S controller into known state */ + i2s_reset(); + + wm8758_write(RESET, 0x1ff); /*Reset*/ + + wm8758_write(PWRMGMT1, 0x2b); + wm8758_write(PWRMGMT2, 0x180); + wm8758_write(PWRMGMT3, 0x6f); + + wm8758_write(AINTFCE, 0x10); + wm8758_write(CLKCTRL, 0x49); + + wm8758_write(OUTCTRL, 1 | (0x3 << 5)); + + /* The iPod can handle multiple frequencies, but fix at 44.1KHz + for now */ + wmcodec_set_sample_rate(WM8758_44100HZ); + + wm8758_write(LOUTMIX,0x1); /* Enable mixer */ + wm8758_write(ROUTMIX,0x1); /* Enable mixer */ + wmcodec_mute(0); + } else { + wmcodec_mute(1); + } +} + +int wmcodec_set_master_vol(int vol_l, int vol_r) +{ + /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */ + /* 1111111 == +6dB */ + /* 1111001 == 0dB */ + /* 0110000 == -73dB */ + /* 0101111 == mute (0x2f) */ + + /* OUT1 */ + wm8758_write(LOUT1VOL, vol_l); + wm8758_write(ROUT1VOL, 0x100 | vol_r); + + /* OUT2 */ + wm8758_write(LOUT2VOL, vol_l); + wm8758_write(ROUT2VOL, 0x100 | vol_r); + + return 0; +} + +int wmcodec_set_mixer_vol(int channel1, int channel2) +{ + (void)channel1; + (void)channel2; + + return 0; +} + +/* We are using Linear bass control */ +void wmcodec_set_bass(int value) +{ + (void)value; +#if 0 + /* Not yet implemented - this is the wm8975 code*/ + int regvalues[]={11, 10, 10, 9, 8, 8, 0xf , 6, 6, 5, 4, 4, 3, 2, 1, 0}; + + if ((value >= -6) && (value <= 9)) { + /* We use linear bass control with 130Hz cutoff */ + wm8758_write(BASSCTRL, regvalues[value+6]); + } +#endif +} + +void wmcodec_set_treble(int value) +{ + (void)value; +#if 0 + /* Not yet implemented - this is the wm8975 code*/ + int regvalues[]={11, 10, 10, 9, 8, 8, 0xf , 6, 6, 5, 4, 4, 3, 2, 1, 0}; + + if ((value >= -6) && (value <= 9)) { + /* We use a 8Khz cutoff */ + wm8758_write(TREBCTRL, regvalues[value+6]); + } +#endif + +} + +int wmcodec_mute(int mute) +{ + if (mute) + { + /* Set DACMU = 1 to soft-mute the audio DACs. */ + wm8758_write(DACCTRL, 0x40); + } else { + /* Set DACMU = 0 to soft-un-mute the audio DACs. */ + wm8758_write(DACCTRL, 0x0); + } + + return 0; +} + +/* Nice shutdown of WM8758 codec */ +void wmcodec_close(void) +{ + wmcodec_mute(1); + + wm8758_write(PWRMGMT3, 0x0); + + wm8758_write(PWRMGMT1, 0x0); + + wm8758_write(PWRMGMT2, 0x40); +} + +/* Change the order of the noise shaper, 5th order is recommended above 32kHz */ +void wmcodec_set_nsorder(int order) +{ + (void)order; +} + +/* Note: Disable output before calling this function */ +void wmcodec_set_sample_rate(int sampling_control) +{ + /**** We force 44.1KHz for now. ****/ + (void)sampling_control; + + /* set clock div */ + wm8758_write(CLKCTRL, 1 | (0 << 2) | (2 << 5)); + + /* setup PLL for MHZ=11.2896 */ + wm8758_write(PLLN, (1 << 4) | 0x7); + wm8758_write(PLLK1, 0x21); + wm8758_write(PLLK2, 0x161); + wm8758_write(PLLK3, 0x26); + + /* set clock div */ + wm8758_write(CLKCTRL, 1 | (0 << 2) | (2 << 5) | (1 << 8)); + + /* set srate */ + wm8758_write(SRATECTRL, (0 << 1)); +} + +void wmcodec_enable_recording(bool source_mic) +{ + (void)source_mic; +} + +void wmcodec_disable_recording(void) { + +} + +void wmcodec_set_recvol(int left, int right, int type) { + + (void)left; + (void)right; + (void)type; +} + +void wmcodec_set_monitor(int enable) { + + (void)enable; +} |