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authorDave Chapman <dave@dchapman.com>2006-02-13 13:48:08 +0000
committerDave Chapman <dave@dchapman.com>2006-02-13 13:48:08 +0000
commit9581ad39ec15cf20350d01d2787dea0c7db6074d (patch)
tree28ead339e852346eb9f4e947e3494353cb687d72 /firmware/drivers/wm8758.c
parentb55f20a12d6b68d0f4f53ab19db76e8b5388d8bb (diff)
downloadrockbox-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.c276
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;
+}