[alsa-devel] Intel SST and HP ElitePad 1000 G2

Pierre-Louis Bossart pierre-louis.bossart at linux.intel.com
Mon Nov 23 18:02:26 CET 2015


On 11/23/15 9:13 AM, Jorge Fernandez Monteagudo wrote:
> Hi,
>
> I've been able to get the audio working in the HP ElitePad 1000G2 tablet.
> Attached the patch I've used in a 4.2.5 to get it working.

Thanks for sharing and good to hear that you have audio working. I have 
no idea why BIOS folks keep inventing new (and illegal) ACPI _HID values...

We may need to use the same tricks as in sst-acpi to find out which 
string to use for .codec_name based on which _HID is handled by the ACPI 
subsystem instead of a hard-coded value.

Note that we are trying to move away from this older driver to a newer 
one based on DPCM that would also support BYT-CR devices and MinnowMax 
Board. It's not ready yet for upstream but if you want to add those 
changes to the newer version and test it'd be great. See 
https://github.com/plbossart/sound.git t100-v4.3-24bit and matching UCM 
files at https://github.com/plbossart/UCM

>
> Basically in this tablet the rt5640 realtek audio codec is identified with
> INTCCFFD. I don't know how to share 'byt-rt5640.c' with two identifiers
> because I had to change:
>
> @@ -186,7 +194,7 @@
>   		.stream_name = "Audio",
>   		.cpu_dai_name = "baytrail-pcm-audio",
>   		.codec_dai_name = "rt5640-aif1",
> -		.codec_name = "i2c-10EC5640:00",
> +		.codec_name = "i2c-INTCCFFD:00",
>   		.platform_name = "baytrail-pcm-audio",
>   		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
>   			   SND_SOC_DAIFMT_CBS_CFS,
>
> but the correct will be to two both of them.
>
> Regards
>
> ________________________________________
> From: alsa-devel-bounces at alsa-project.org [alsa-devel-bounces at alsa-project.org] On Behalf Of Jorge Fernandez Monteagudo [jorgefm at cirsa.com]
> Sent: Friday, November 20, 2015 4:27 PM
> To: alsa-devel at alsa-project.org
> Subject: [alsa-devel] Intel SST and HP ElitePad 1000 G2
>
> Hi,
>
> This is my first email in this list, and my last chance to make my tablet
> audio system work
>
> I'm trying to get my tablet audio system working but I'm run out of ideas.
> The HP ElitePad 1000 G2 it's an Atom Z3795 1.60GHz Bay Trail-T tablet.
>
> I'm using a kernel 4.2.5 with all the SST configs enabled:
>
> CONFIG_SND_SST_MFLD_PLATFORM=m
> CONFIG_SND_SST_IPC=m
> CONFIG_SND_SST_IPC_ACPI=m
> CONFIG_SND_SOC_INTEL_SST=m
> CONFIG_SND_SOC_INTEL_SST_ACPI=m
> CONFIG_SND_SOC_INTEL_HASWELL=m
> CONFIG_SND_SOC_INTEL_BAYTRAIL=m
> CONFIG_SND_SOC_INTEL_HASWELL_MACH=m
> CONFIG_SND_SOC_INTEL_BYT_RT5640_MACH=m
> CONFIG_SND_SOC_INTEL_BYT_MAX98090_MACH=m
> CONFIG_SND_SOC_INTEL_BROADWELL_MACH=m
> CONFIG_SND_SOC_INTEL_BYTCR_RT5640_MACH=m
> CONFIG_SND_SOC_INTEL_CHT_BSW_RT5672_MACH=m
> CONFIG_SND_SOC_INTEL_CHT_BSW_RT5645_MACH=m
> CONFIG_SND_SOC_INTEL_CHT_BSW_MAX98090_TI_MACH=m
> # CONFIG_SND_SOC_QCOM is not set
> # CONFIG_SND_SOC_XTFPGA_I2S is not set
> CONFIG_SND_SOC_I2C_AND_SPI=m
>
> I've follow the same steps as the installation for Asus T100TA
> https://wiki.debian.org/InstallingDebianOn/Asus/T100TA
>
> and finally I only get the dmesg traces:
>
> sst-acpi 80860F28:00: No matching ASoC machine driver found
> intel-sst-acpi 80860F28:00: No matching machine driver found
>
>  From the 'dsdt.dsl' I can see:
>
>          Device (I2C2)
>          {
>              Name (_ADR, Zero)  // _ADR: Address
>              Name (_HID, "80860F41" /* Intel Baytrail I2C Host Controller */)  // _HID: Hardware ID
>              Name (_CID, "80860F41" /* Intel Baytrail I2C Host Controller */)  // _CID: Compatible ID
>              Name (_DEP, Package (0x01)  // _DEP: Dependencies
>              {
>                  PEPD
>              })
>              Name (_DDN, "Intel(R) I2C Controller #2 - 80860F42")  // _DDN: DOS Device Name
>              Name (_UID, 0x02)  // _UID: Unique ID
>              Name (RBUF, ResourceTemplate ()
>              {
>                  Memory32Fixed (ReadWrite,
>                      0x00000000,         // Address Base
>                      0x00001000,         // Address Length
>                      _Y12)
>                  Interrupt (ResourceConsumer, Level, ActiveLow, Exclusive, ,, )
>                  {
>                      0x00000021,
>                  }
>                  FixedDMA (0x0012, 0x0002, Width32bit, )
>                  FixedDMA (0x0013, 0x0003, Width32bit, )
>              })
>              Method (_HRV, 0, NotSerialized)  // _HRV: Hardware Revision
>              {
>                  Return (SOCS) /* \SOCS */
>              }
>
>              Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
>              {
>                  CreateDWordField (RBUF, \_SB.I2C2._Y12._BAS, B0BA)  // _BAS: Base Address
>                  CreateDWordField (RBUF, \_SB.I2C2._Y12._LEN, B0LN)  // _LEN: Length
>                  Store (I20A, B0BA) /* \_SB_.I2C2._CRS.B0BA */
>                  Store (I20L, B0LN) /* \_SB_.I2C2._CRS.B0LN */
>                  Return (RBUF) /* \_SB_.I2C2.RBUF */
>              }
>
>              Method (_STA, 0, NotSerialized)  // _STA: Status
>              {
>                  If (LOr (LEqual (I20A, Zero), LEqual (L22D, One)))
>                  {
>                      Return (Zero)
>                  }
>
>                  Return (0x0F)
>              }
>
>              Method (_PS3, 0, NotSerialized)  // _PS3: Power State 3
>              {
>                  Or (PSAT, 0x03, PSAT) /* \_SB_.I2C2.PSAT */
>                  Or (PSAT, Zero, PSAT) /* \_SB_.I2C2.PSAT */
>              }
>
>              Method (_PS0, 0, NotSerialized)  // _PS0: Power State 0
>              {
>                  And (PSAT, 0xFFFFFFFC, PSAT) /* \_SB_.I2C2.PSAT */
>                  Or (PSAT, Zero, PSAT) /* \_SB_.I2C2.PSAT */
>              }
>
>              OperationRegion (KEYS, SystemMemory, I21A, 0x0100)
>              Field (KEYS, DWordAcc, NoLock, WriteAsZeros)
>              {
>                  Offset (0x84),
>                  PSAT,   32
>              }
>
>              Device (RTEK)
>              {
>                  Name (_ADR, Zero)  // _ADR: Address
>                  Name (_HID, "INTCCFFD")  // _HID: Hardware ID
>                  Name (_CID, "INTCCFFD")  // _CID: Compatible ID
>                  Name (_DDN, "RTEK Codec Controller ")  // _DDN: DOS Device Name
>                  Name (_UID, 0x02)  // _UID: Unique ID
>                  Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
>                  {
>                      Name (SBUF, ResourceTemplate ()
>                      {
>                          I2cSerialBus (0x001C, ControllerInitiated, 0x00061A80,
>                              AddressingMode7Bit, "\\_SB.I2C2",
>                              0x00, ResourceConsumer, ,
>                              )
>                          GpioInt (Edge, ActiveBoth, SharedAndWake, PullNone, 0x0000,
>                              "\\_SB.GPO2", 0x00, ResourceConsumer, ,
>                              )
>                              {   // Pin list
>                                  0x000E
>                              }
>                          GpioInt (Edge, ActiveBoth, SharedAndWake, PullNone, 0x0000,
>                              "\\_SB.GPO0", 0x00, ResourceConsumer, ,
>                              )
>                              {   // Pin list
>                                  0x0003
>                              }
>                          GpioInt (Edge, ActiveBoth, SharedAndWake, PullNone, 0x0000,
>                              "\\_SB.GPO0", 0x00, ResourceConsumer, ,
>                              )
>                              {   // Pin list
>                                  0x0000
>                              }
>                          GpioIo (Shared, PullDefault, 0x0000, 0x0000, IoRestrictionInputOnly,
>                              "\\_SB.GPO2", 0x00, ResourceConsumer, ,
>                              )
>                              {   // Pin list
>                                  0x000E
>                              }
>                          GpioIo (Shared, PullDefault, 0x0000, 0x0000, IoRestrictionInputOnly,
>                              "\\_SB.GPO0", 0x00, ResourceConsumer, ,
>                              )
>                              {   // Pin list
>                                  0x0003,
>                                  0x0000
>                              }
>                      })
>                      Return (SBUF) /* \_SB_.I2C2.RTEK._CRS.SBUF */
>                  }
>
> What am I missing? I suppose I need some changes in the kernel sources but I don't know
> where to start. Any help is welcome
>
> Regards,
> Jorge
>
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