* for compatibility reasons) has the following features:
*
* - builtin AC97 conformant codec (SNR over 80dB)
- * (really AC97 compliant?? I really doubt it when looking
- * at the mixer register layout)
+ * Note that "conformant" != "compliant"!! this chip's mixer register layout
+ * *differs* from the standard AC97 layout:
+ * they chose to not implement the headphone register (which is not a
+ * problem since it's merely optional), yet when doing this, they committed
+ * the grave sin of letting other registers follow immediately instead of
+ * keeping a headphone dummy register, thereby shifting the mixer register
+ * addresses illegally. So far unfortunately it looks like the very flexible
+ * ALSA AC97 support is still not enough to easily compensate for such a
+ * grave layout violation despite all tweaks and quirks mechanisms it offers.
* - builtin genuine OPL3
* - full duplex 16bit playback/record at independent sampling rate
* - MPU401 (+ legacy address support) FIXME: how to enable legacy addr??
* The standard suspend/resume functionality could probably make use of
* some improvement, too...
* - figure out what all unknown port bits are responsible for
+ * - figure out some cleverly evil scheme to possibly make ALSA AC97 code
+ * fully accept our quite incompatible ""AC97"" mixer and thus save some
+ * code (but I'm not too optimistic that doing this is possible at all)
*/
#include <sound/driver.h>
struct snd_ctl_elem_info *uinfo)
{
static const char * const texts1[] = {
- "ModemOut1", "ModemOut2"
+ "Mic1", "Mic2"
};
static const char * const texts2[] = {
- "MonoSelectSource1", "MonoSelectSource2"
+ "Mix", "Mic"
};
static const char * const texts3[] = {
"Mic", "CD", "Video", "Aux",
"Line", "Mix", "Mix Mono", "Phone"
};
+ static const char * const texts4[] = {
+ "pre 3D", "post 3D"
+ };
struct azf3328_mixer_reg reg;
snd_azf3328_mixer_reg_decode(®, kcontrol->private_value);
uinfo->value.enumerated.item = reg.enum_c - 1U;
if (reg.reg == IDX_MIXER_ADVCTL2)
{
- if (reg.lchan_shift == 8) /* modem out sel */
+ switch(reg.lchan_shift) {
+ case 8: /* modem out sel */
strcpy(uinfo->value.enumerated.name, texts1[uinfo->value.enumerated.item]);
- else /* mono sel source */
+ break;
+ case 9: /* mono sel source */
strcpy(uinfo->value.enumerated.name, texts2[uinfo->value.enumerated.item]);
+ break;
+ case 15: /* PCM Out Path */
+ strcpy(uinfo->value.enumerated.name, texts4[uinfo->value.enumerated.item]);
+ break;
+ }
}
else
strcpy(uinfo->value.enumerated.name, texts3[uinfo->value.enumerated.item]
AZF3328_MIXER_VOL_MONO("Modem Playback Volume", IDX_MIXER_MODEMOUT, 0x1f, 1),
AZF3328_MIXER_SWITCH("Modem Capture Switch", IDX_MIXER_MODEMIN, 15, 1),
AZF3328_MIXER_VOL_MONO("Modem Capture Volume", IDX_MIXER_MODEMIN, 0x1f, 1),
- AZF3328_MIXER_ENUM("Modem Out Select", IDX_MIXER_ADVCTL2, 2, 8),
- AZF3328_MIXER_ENUM("Mono Select Source", IDX_MIXER_ADVCTL2, 2, 9),
+ AZF3328_MIXER_ENUM("Mic Select", IDX_MIXER_ADVCTL2, 2, 8),
+ AZF3328_MIXER_ENUM("Mono Output Select", IDX_MIXER_ADVCTL2, 2, 9),
+ AZF3328_MIXER_ENUM("PCM", IDX_MIXER_ADVCTL2, 2, 15), /* PCM Out Path, place in front since it controls *both* 3D and Bass/Treble! */
AZF3328_MIXER_VOL_SPECIAL("Tone Control - Treble", IDX_MIXER_BASSTREBLE, 0x07, 1, 0),
AZF3328_MIXER_VOL_SPECIAL("Tone Control - Bass", IDX_MIXER_BASSTREBLE, 0x07, 9, 0),
AZF3328_MIXER_SWITCH("3D Control - Switch", IDX_MIXER_ADVCTL2, 13, 0),
- AZF3328_MIXER_VOL_SPECIAL("3D Control - Wide", IDX_MIXER_ADVCTL1, 0x07, 1, 0), /* "3D Width" */
- AZF3328_MIXER_VOL_SPECIAL("3D Control - Space", IDX_MIXER_ADVCTL1, 0x03, 8, 0), /* "Hifi 3D" */
+ AZF3328_MIXER_VOL_SPECIAL("3D Control - Width", IDX_MIXER_ADVCTL1, 0x07, 1, 0), /* "3D Width" */
+ AZF3328_MIXER_VOL_SPECIAL("3D Control - Depth", IDX_MIXER_ADVCTL1, 0x03, 8, 0), /* "Hifi 3D" */
#if MIXER_TESTING
AZF3328_MIXER_SWITCH("0", IDX_MIXER_ADVCTL2, 0, 0),
AZF3328_MIXER_SWITCH("1", IDX_MIXER_ADVCTL2, 1, 0),
#define IDX_IO_REC_DMA_CURROFS 0x34 /* PU:0x00000000 */
#define IDX_IO_REC_SOUNDFORMAT 0x36 /* PU:0x0000 */
-/** hmm, what is this I/O area for? MPU401?? (after playback, recording, ???, timer) **/
+/** hmm, what is this I/O area for? MPU401?? or external DAC via I2S?? (after playback, recording, ???, timer) **/
#define IDX_IO_SOMETHING_FLAGS 0x40 /* gets set to 0x34 just like port 0x0 and 0x20 on card init, PU:0x0000 */
/* general */
#define IDX_IO_42H 0x42 /* PU:0x0001 */
#define IDX_MIXER_ADVCTL1 0x1e
/* unlisted bits are unmodifiable */
#define MIXER_ADVCTL1_3DWIDTH_MASK 0x000e
- #define MIXER_ADVCTL1_HIFI3D_MASK 0x0300
-#define IDX_MIXER_ADVCTL2 0x20 /* resembles AC97_GENERAL_PURPOSE reg! */
+ #define MIXER_ADVCTL1_HIFI3D_MASK 0x0300 /* yup, this is missing the high bit that official AC97 contains, plus it doesn't have linear bit value range behaviour but instead acts weirdly (possibly we're dealing with two *different* 3D settings here??) */
+#define IDX_MIXER_ADVCTL2 0x20 /* subset of AC97_GENERAL_PURPOSE reg! */
/* unlisted bits are unmodifiable */
- #define MIXER_ADVCTL2_BIT7 0x0080 /* WaveOut 3D Bypass? mutes WaveOut at LineOut */
- #define MIXER_ADVCTL2_BIT8 0x0100 /* is this Modem Out Select? */
- #define MIXER_ADVCTL2_BIT9 0x0200 /* Mono Select Source? */
- #define MIXER_ADVCTL2_BIT13 0x2000 /* 3D enable? */
- #define MIXER_ADVCTL2_BIT15 0x8000 /* unknown */
+ #define MIXER_ADVCTL2_LPBK 0x0080 /* Loopback mode -- Win driver: "WaveOut3DBypass"? mutes WaveOut at LineOut */
+ #define MIXER_ADVCTL2_MS 0x0100 /* Mic Select 0=Mic1, 1=Mic2 -- Win driver: "ModemOutSelect"?? */
+ #define MIXER_ADVCTL2_MIX 0x0200 /* Mono output select 0=Mix, 1=Mic; Win driver: "MonoSelectSource"?? */
+ #define MIXER_ADVCTL2_3D 0x2000 /* 3D Enhancement 1=on */
+ #define MIXER_ADVCTL2_POP 0x8000 /* Pcm Out Path, 0=pre 3D, 1=post 3D */
#define IDX_MIXER_SOMETHING30H 0x30 /* used, but unknown??? */
projects / openwrt / staging / blogic.git / commitdiff