* Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxxxx> [180329 13:37]: > Hi, > > On Wed, Mar 28, 2018 at 06:45:07PM -0700, Tony Lindgren wrote: > > Hi, > > > > * Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxxxx> [180328 14:03]: > > > Hi, > > > > > > On Wed, Mar 28, 2018 at 10:29:10AM +0800, Mark Brown wrote: > > > > On Wed, Mar 28, 2018 at 12:22:37AM +0200, Sebastian Reichel wrote: > > > > > On Tue, Mar 27, 2018 at 08:14:41PM +0800, Mark Brown wrote: > > > > > > > > > > No, this is exactly the sort of use case with multiple DAIs that the > > > > > > graph card is intended to enable over the old simple-card. > > > > > > > > > +----------+ +-------------+ > > > > > | OMAP4 | | CPCAP | > > > > > | | | | > > > > > | [McBSP2] | <-----> | [HiFi DAI] | > > > > > | | | | > > > > > | [McBSP3] | <--+--> | [Voice DAI] | > > > > > | | | | | > > > > > +----------+ | +-------------+ > > > > > | > > > > > +----------+ | +-------------+ > > > > > | MDM6600 | | | WL1285 | > > > > > | | | | | > > > > > | [DAI] | <--+--> | [DAI] | > > > > > | | | | > > > > > +----------+ +-------------+ > > > > > > > > > Legend: > > > > > OMAP4 = SoC running Linux > > > > > CPCAP = Audio codec > > > > > MDM6600 = Baseband > > > > > WL1285 = Bluetooth > > > > > > > > > Re-reading the audio-graph-card binding document I still don't see > > > > > how the network (OMAP.McBSP3, CPCAP.Voice, MDM6600, WL1285) is > > > > > supposed to look like. It seems to expect point-to-point DAI > > > > > connections. > > > > > > > > Ugh, a TDM mux? > > > > > > Yes, at least that's how I understood Motorola's code. > > > > Hmm is there some active component doing the muxing then? > > Maybe the "AT+CMUT=0" part below? > > I don't think, that there is a special hardware mux. I think each > device is configured to use a proper timeslot and/or is being used > exclusively. OK. I wonder what "AT+CMUT=0" on mdm6600 then does? If a voice call is requested and mdm6600 only has one i2s output it seems kind of unnecesary :) > > > > That's really unusual and not particularly supported yet, you'd > > > > need to extend the graph card to do it. It's where things should > > > > end up for a generic card though. > > > > > > Motorola's driver provided the following modes: > > > > > > OMAP4 <-> CPCAP (voice recording) > > > MDM6600 <-> CPCAP (voice call, CPU not involved) > > > OMAP4 <-> WL1285 (bluetooth HFP/HSP) > > > MDM6600 <-> WL1285 (bluetooth voice call) > > > > > > In case of the last two variants, the bus clock is provided by > > > CPCAP, so it needs to be enabled for any audio stream. I suppose > > > the codec <-> codec as part of TDM is out of scope for the graph > > > card and we need a Droid 4 specific card driver? > > > > Hmm well I got audio call hacked to work as a proof of concept hack, > > see below. Maybe it can be used to verify some of the assumptions > > above. > > Your proof of concept verifies the assumption, that the modem is > connected to the CPCAP voice DAI. This patchset is a proof, that the > voice DAI is connected to OMAP. So we can tell for sure, that this > is not a common direct DAI-to-DAI connection. OK > > @@ -510,17 +510,17 @@ > > 07f4: 0000 > > 07f8: 0000 > > 07fc: 0000 > > -0800: 0065 > > -0804: 0000 > > -0808: 0040 > > +0800: 0025 # CPCAP_REG_VAUDIOC VAUDIO Control > > enable vaudio (obviously required :)) > > > +0804: 60cf # CPCAP_REG_CC Codec Control, moto cpcap.c:1337 sets 0x0093? > > 0x6000 => clkfreq=19200000 > > The following bits are automatically set via DAPM by cpcap codec, > once it is used: > > 0x00c0 => "ADC Left" + "DAC Voice" > 0x000f => "Highpass Filter TX" + "Highpass Filter RX" > > > +0808: ae0a # CPCAP_REG_CDI Codec Digital Interface > > 0xa000 => enable PLL & use clock 1 > > This should be used by default for VOICE DAI. > > 0x0e00 => "Voice DAI Clock"=1 (handled by DAPM) , mode=I2S > 0x000a => CPCAP_BIT_CLK_INV | CPCAP_BIT_MIC1_RX_TIMESLOT0 > > > 080c: 0000 > > 0810: 0004 > > -0814: 0804 > > -0818: 079c > > -081c: 0000 > > -0820: 0924 > > -0824: 0000 > > -0828: 0000 > > +0814: 0cc0 # CPCAP_REG_TXI TX Inputs, moto cpcap.c:1340 sets 0x0CC6? > > +0818: 0610 # CPCAP_REG_TXMP TX MIC PGA's, moto cpcap.c:1343 sets 0x0273? > > +081c: 0006 # CPCAP_REG_RXOA RX Output Amplifiers > > +0820: 0b2c # CPCAP_REG_RXVC RX Volume Control > > +0824: 0606 # CPCAP_REG_RXCOA RX Codec to Output Amps > > +0828: 0600 # CPCAP_REG_RXSDOA RX Stereo DAC to Output Amps > > This configures the loudspeaker, mics and volume and enables the > required clocks/DACs/... This is already covered by the cpcap codec > driver. You just need to configure everything correctly in > alsamixer. > > > 082c: 0400 > > 0830: 0000 > > 0834: 0030 > > > > I wonder if mdm6600 is the i2s master during the voice call? > > I think cpcap is always the clock and frame master, but I think > mdm6600 is the remote side and OMAP is not involved at all. OK. So could it be just an alsamixer on/off toggle then for "Modem" or something similar? > > Then using the n_gsm ts 27.010 uart mux, I dial: > > > > ./ngsm-rw 1 "AT+CFUN=1" # connect to network > > U0001+CFUN:OK > > ./ngsm-rw 2 "AT+CMUT=0" # unmute speaker over ch2, do this over qmi? > > U0001+CMUT:OK > > ./ngsm-rw 1 "ATD#123" # dial number > > U0001D:OK There's a typo above, it should be just ATD123 where 123 is the number. I was just doing few test calls to robots. Payback time for all the robocalls, you know! :) > > And I do hear a voice talking over the speakerphone :) Sorry have not tested the > > mic yet.. And calling a person I can hear the other end but the mic is not working. So maybe I need to tweak the alsamixer settings too for mic? Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
