+void set_telephone_to_playback_target(void)
+{
+ /*
+ * 0110 1101 0101 1100
+ * power down MICBIAS_HED, Analog sidetone, SPK2, DAC,
+ * Driver virtual ground, loudspeaker. Values D2-d5 are flags.
+ */
+ omap_tsc2101_audio_write(TSC2101_CODEC_POWER_CTRL,
+ CPC_MBIAS_HED | CPC_ASTPWD | CPC_SP2PWDN | CPC_DAPWDN |
+ CPC_VGPWDN | CPC_LSPWDN);
+
+ /*
+ * 0010 1010 0100 0000
+ * ADC, DAC, Analog Sidetone, cellphone, buzzer softstepping enabled
+ * 1dB AGC hysteresis
+ * MICes bias 2V
+ */
+ omap_tsc2101_audio_write(TSC2101_AUDIO_CTRL_4,
+ AC4_MB_HND | AC4_MB_HED(0) | AC4_AGCHYS(1) |
+ AC4_BISTPD | AC4_ASSTPD | AC4_DASTPD);
+ printk("set_telephone_to_playback_target(), TSC2101_AUDIO_CTRL_4 = %d\n", omap_tsc2101_audio_read(TSC2101_AUDIO_CTRL_4));
+
+ /*
+ * 1110 0010 0000 0010
+ * DAC left and right routed to SPK1/SPK2
+ * SPK1/SPK2 unmuted
+ * keyclicks routed to SPK1/SPK2
+ */
+ omap_tsc2101_audio_write(TSC2101_AUDIO_CTRL_5,
+ AC5_DIFFIN | AC5_DAC2SPK1(3) |
+ AC5_CPI2SPK1 | AC5_MUTSPK2);
+
+ omap_tsc2101_audio_write(TSC2101_AUDIO_CTRL_6,
+ AC6_MIC2CPO | AC6_MUTLSPK |
+ AC6_LDSCPTC | AC6_VGNDSCPTC | AC6_CAPINTF);
+ current_playback_target = PLAYBACK_TARGET_CELLPHONE;
+}
+
+/*
+ * 1100 0101 1101 0000
+ *
+ * #define MPC_ASTMU TSC2101_BIT(15)
+ * #define MPC_ASTG(ARG) (((ARG) & 0x7F) << 8)
+ * #define MPC_MICSEL(ARG) (((ARG) & 0x07) << 5)
+ * #define MPC_MICADC TSC2101_BIT(4)
+ * #define MPC_CPADC TSC2101_BIT(3)
+ * #define MPC_ASTGF (0x01)
+ */
+static void set_telephone_to_record_source(void)
+{
+ u16 val;
+
+ /*
+ * D0 = 0:
+ * --> AGC is off for handset input.
+ * --> ADC PGA is controlled by the ADMUT_HDN + ADPGA_HND
+ * (D15, D14-D8)
+ * D4 - D1 = 0000
+ * --> AGC time constant for handset input,
+ * attack time = 8 mc, decay time = 100 ms
+ * D7 - D5 = 000
+ * --> AGC Target gain for handset input = -5.5 db
+ * D14 - D8 = 011 1100
+ * --> ADC handset PGA settings = 60 = 30 db
+ * D15 = 0
+ * --> Handset input ON (unmuted)
+ */
+ val = 0x3c00; // 0011 1100 0000 0000 = 60 = 30
+ omap_tsc2101_audio_write(TSC2101_HANDSET_GAIN_CTRL, val);
+
+ /*
+ * D0 = 0
+ * --> AGC is off for headset/Aux input
+ * --> ADC headset/Aux PGA is contoller by ADMUT_HED + ADPGA_HED
+ * (D15, D14-D8)
+ * D4 - D1 = 0000
+ * --> Agc constant for headset/Aux input,
+ * attack time = 8 mc, decay time = 100 ms
+ * D7 - D5 = 000
+ * --> AGC target gain for headset input = -5.5 db
+ * D14 - D8 = 000 0000
+ * --> Adc headset/AUX pga settings = 0 db
+ * D15 = 1
+ * --> Headset/AUX input muted
+ *
+ * Mute headset aux input
+ */
+ val = 0x8000; // 1000 0000 0000 0000
+ omap_tsc2101_audio_write(TSC2101_HEADSET_GAIN_CTRL, val);
+ set_record_source(REC_SRC_MICIN_HND_AND_AUX1);
+
+ // hacks start
+ /* D0 = flag, Headset/Aux or handset PGA flag
+ * --> & with 1 (= 1 -->gain applied == pga register settings)
+ * D1 = 0, DAC channel PGA soft stepping control
+ * --> 0.5 db change every WCLK
+ * D2 = flag, DAC right channel PGA flag
+ * --> & with 1
+ * D3 = flag, DAC left channel PGA flag
+ * -- > & with 1
+ * D7 - D4 = 0001, keyclick length
+ * --> 4 periods key clicks
+ * D10 - D8 = 100, keyclick frequenzy
+ * --> 1 kHz,
+ * D11 = 0, Headset/Aux or handset soft stepping control
+ * --> 0,5 db change every WCLK or ADWS
+ * D14 -D12 = 100, Keyclick applitude control
+ * --> Medium amplitude
+ * D15 = 0, keyclick disabled
+ */
+ val = omap_tsc2101_audio_read(TSC2101_AUDIO_CTRL_2);
+ val = val & 0x441d;
+ val = val | 0x4410; // D14, D10, D4 bits == 1
+ omap_tsc2101_audio_write(TSC2101_AUDIO_CTRL_2, val);
+
+ /*
+ * D0 = 0 (reserved, write always 0)
+ * D1 = flag,
+ * --> & with 1
+ * D2 - D5 = 0000 (reserved, write always 0000)
+ * D6 = 1
+ * --> MICBIAS_HND = 2.0 v
+ * D8 - D7 = 00
+ * --> MICBIAS_HED = 3.3 v
+ * D10 - D9 = 01,
+ * --> Mic AGC hysteric selection = 2 db
+ * D11 = 1,
+ * --> Disable buzzer PGA soft stepping
+ * D12 = 0,
+ * --> Enable CELL phone PGA soft stepping control
+ * D13 = 1
+ * --> Disable analog sidetone soft stepping control
+ * D14 = 0
+ * --> Enable DAC PGA soft stepping control
+ * D15 = 0,
+ * --> Enable headset/Aux or Handset soft stepping control
+ */
+ val = omap_tsc2101_audio_read(TSC2101_AUDIO_CTRL_4);
+ val = val & 0x2a42; // 0010 1010 0100 0010
+ val = val | 0x2a40; // bits D13, D11, D9, D6 == 1
+ omap_tsc2101_audio_write(TSC2101_AUDIO_CTRL_4, val);
+ printk("set_telephone_to_record_source(), TSC2101_AUDIO_CTRL_4 = %d\n", omap_tsc2101_audio_read(TSC2101_AUDIO_CTRL_4));
+ /*
+ * D0 = 0
+ * --> reserved, write always = 0
+ * D1 = flag, read only
+ * --> & with 1
+ * D5 - D2 = 1111, Buzzer input PGA settings
+ * --> 0 db
+ * D6 = 1,
+ * --> power down buzzer input pga
+ * D7 = flag, read only
+ * --> & with 1
+ * D14 - D8 = 101 1101
+ * --> 12 DB
+ * D15 = 0
+ * --> power up cell phone input PGA
+ */
+ val = omap_tsc2101_audio_read(TSC2101_BUZZER_GAIN_CTRL);
+ val = val & 0x5dfe;
+ val = val | 0x5dfe; // bits, D14, D12, D11, D10, D8, D6, D5,D4,D3,D2
+ omap_tsc2101_audio_write(TSC2101_BUZZER_GAIN_CTRL, val);
+
+ /* D6 - D0 = 000 1001
+ * --> -4.5 db for DAC right channel volume control
+ * D7 = 1
+ * --> DAC right channel muted
+ * D14 - D8 = 000 1001
+ * --> -4.5 db for DAC left channel volume control
+ * D15 = 1
+ * --> DAC left channel muted
+ */
+ //val = omap_tsc2101_audio_read(TSC2101_DAC_GAIN_CTRL);
+ val = 0x8989;
+ omap_tsc2101_audio_write(TSC2101_DAC_GAIN_CTRL, val);
+
+ /* 0000 0000 0100 0000
+ *
+ * D1 - D0 = 0
+ * --> GPIO 1 pin output is three stated
+ * D2 = 0
+ * --> Disaple GPIO2 for CLKOUT mode
+ * D3 = 0
+ * --> Disable GPUI1 for interrupt detection
+ * D4 = 0
+ * --> Disable GPIO2 for headset detection interrupt
+ * D5 = reserved, always 0
+ * D7 - D6 = 01
+ * --> 8 ms clitch detection
+ * D8 = reserved, write only 0
+ * D10 -D9 = 00
+ * --> 16 ms de bouncing programmatitily
+ * for glitch detection during headset detection
+ * D11 = flag for button press
+ * D12 = flag for headset detection
+ * D14-D13 = 00
+ * --> type of headset detected = 00 == no stereo headset deected
+ * D15 = 0
+ * --> Disable headset detection
+ *
+ * */
+ val = 0x40;
+ omap_tsc2101_audio_write(TSC2101_AUDIO_CTRL_7, val);
+}
+