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Date:   Thu, 2 Nov 2017 14:12:11 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Vinod Koul <vinod.koul@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Harsha Priya N <harshapriya.n@...el.com>,
        Naveen M <naveen.m@...el.com>, alsa-devel@...a-project.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [alsa-devel] [PATCH] ASoC: Intel: fix Kconfig dependencies

On Thu, Nov 2, 2017 at 2:04 PM, Arnd Bergmann <arnd@...db.de> wrote:
> On Thu, Nov 2, 2017 at 1:43 PM, Pierre-Louis Bossart
> <pierre-louis.bossart@...ux.intel.com> wrote:
>> On 11/2/17 6:07 AM, Arnd Bergmann wrote:
>>>
>>> I ran into multiple problems during randconfig builds of the
>>> recently changed Kconfig logic for Intel ASoC drivers:
>>
>>
>> we did quite a bit of testing on this change, looks like we missed a number
>> of cases. Gah.
>>
>>>
>>> - Building without DMADEVICES doesn't work in general
>>
>>
>> the Intel audio hardware has its own DMA in general, be it based on
>> DesignWare controlled by audio firmware or HDaudio, not sure if/why this
>> dependency is needed across the board?
>
> Probably my mistake. I'll try again without the dependency and see
> what problems I run into then and what the correct fix is.

I immediately ran into this Kconfig warning, so this is clearly for the two
users of SND_SOC_INTEL_SST_FIRMWARE:

warning: (SATA_DWC_OLD_DMA && SERIAL_8250_LPSS &&
SND_SOC_INTEL_SST_FIRMWARE) selects DW_DMAC_CORE which has unmet
direct dependencies (DMADEVICES)

I'm testing with this fixup now:

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index e18118209b75..89126fa3f846 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -20,7 +20,6 @@ config SND_SOC_INTEL_SST

 config SND_SOC_INTEL_SST_FIRMWARE
        tristate
-       select DW_DMAC_CORE

 config SND_SOC_INTEL_SST_ACPI
        tristate
@@ -32,19 +31,20 @@ config SND_SOC_ACPI_INTEL_MATCH
 config SND_SOC_INTEL_SST_TOPLEVEL
        tristate "Intel ASoC SST drivers"
        depends on X86 || COMPILE_TEST
-       depends on DMADEVICES
        select SND_SOC_INTEL_MACH
        select SND_SOC_INTEL_COMMON

 config SND_SOC_INTEL_HASWELL
        tristate "Intel ASoC SST driver for Haswell/Broadwell"
        depends on SND_SOC_INTEL_SST_TOPLEVEL && SND_DMA_SGBUF
+       depends on DMADEVICES
        select SND_SOC_INTEL_SST
        select SND_SOC_INTEL_SST_FIRMWARE

 config SND_SOC_INTEL_BAYTRAIL
        tristate "Intel ASoC SST driver for Baytrail (legacy)"
        depends on SND_SOC_INTEL_SST_TOPLEVEL
+       depends on DMADEVICES
        select SND_SOC_INTEL_SST
        select SND_SOC_INTEL_SST_FIRMWARE

diff --git a/sound/soc/intel/boards/Kconfig b/sound/soc/intel/boards/Kconfig
index 449bc8baaa60..5063f15b4ca4 100644
--- a/sound/soc/intel/boards/Kconfig
+++ b/sound/soc/intel/boards/Kconfig
@@ -19,7 +19,6 @@ config SND_SOC_INTEL_HASWELL_MACH
        tristate "ASoC Audio DSP support for Intel Haswell Lynxpoint"
        depends on SND_SOC_INTEL_MACH
        depends on X86_INTEL_LPSS && I2C && I2C_DESIGNWARE_PLATFORM
-       depends on DMADEVICES
        depends on SND_SOC_INTEL_HASWELL
        select SND_SOC_RT5640
        help
@@ -32,7 +31,6 @@ config SND_SOC_INTEL_BDW_RT5677_MACH
        tristate "ASoC Audio driver for Intel Broadwell with RT5677 codec"
        depends on SND_SOC_INTEL_MACH
        depends on X86_INTEL_LPSS && GPIOLIB && I2C
-       depends on DMADEVICES
        depends on SND_SOC_INTEL_HASWELL
        select SND_SOC_RT5677
        help
@@ -43,7 +41,6 @@ config SND_SOC_INTEL_BROADWELL_MACH
        tristate "ASoC Audio DSP support for Intel Broadwell Wildcatpoint"
        depends on SND_SOC_INTEL_MACH
        depends on X86_INTEL_LPSS && I2C && I2C_DESIGNWARE_PLATFORM
-       depends on DMADEVICES
        depends on SND_SOC_INTEL_HASWELL
        select SND_SOC_RT286
        help
@@ -56,7 +53,6 @@ config SND_SOC_INTEL_BYT_MAX98090_MACH
        tristate "ASoC Audio driver for Intel Baytrail with MAX98090 codec"
        depends on SND_SOC_INTEL_MACH
        depends on X86_INTEL_LPSS && I2C
-       depends on DMADEVICES
        depends on SND_SST_IPC_ACPI = n
        depends on SND_SOC_INTEL_BAYTRAIL
        select SND_SOC_MAX98090
@@ -68,7 +64,6 @@ config SND_SOC_INTEL_BYT_RT5640_MACH
        tristate "ASoC Audio driver for Intel Baytrail with RT5640 codec"
        depends on SND_SOC_INTEL_MACH
        depends on X86_INTEL_LPSS && I2C
-       depends on DMADEVICES
        depends on SND_SST_IPC_ACPI = n
        depends on SND_SOC_INTEL_BAYTRAIL
        select SND_SOC_RT5640

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