linux-kernel - Re: [PATCH v3 4/4] MIPS: Deprecate VPE Loader

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Message-ID: <c4d01a54-7a68-c9ee-bc5c-ac01743f7269@hauke-m.de>
Date:   Wed, 12 Oct 2016 13:09:37 +0200
From:   Hauke Mehrtens <hauke@...ke-m.de>
To:     Matt Redfearn <matt.redfearn@...tec.com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-mips@...ux-mips.org, linux-remoteproc@...r.kernel.org,
        lisa.parratt@...tec.com, linux-kernel@...r.kernel.org,
        olaf.wachendorf@...el.com, hauke.mehrtens@...el.com
Subject: Re: [PATCH v3 4/4] MIPS: Deprecate VPE Loader

This interface is currently used by the Intel / Lantiq voice Firmware.
This firmware is used by all Intel / Lantiq MIPS SoCs when they should
support analog voice.

What is the proposed timeline for the removal of this interface?

Hauke

On 10/11/2016 03:42 PM, Matt Redfearn wrote:
> The MIPS remote processor driver (CONFIG_MIPS_RPROC) provides a more
> standard mechanism for using one or more VPs as coprocessors running
> separate firmware.
> 
> Here we deprecate this mechanism before it is removed.
> 
> Signed-off-by: Matt Redfearn <matt.redfearn@...tec.com>
> ---
> 
> Changes in v3: None
> Changes in v2: None
> 
>  arch/mips/Kconfig | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
> index fd2468e71e63..3e767c373c7b 100644
> --- a/arch/mips/Kconfig
> +++ b/arch/mips/Kconfig
> @@ -2264,7 +2264,7 @@ comment "MIPS R2-to-R6 emulator is only available for UP kernels"
>  	depends on SMP && CPU_MIPSR6
>  
>  config MIPS_VPE_LOADER
> -	bool "VPE loader support."
> +	bool "VPE loader support (DEPRECATED)"
>  	depends on SYS_SUPPORTS_MULTITHREADING && MODULES
>  	select CPU_MIPSR2_IRQ_VI
>  	select CPU_MIPSR2_IRQ_EI
> @@ -2273,6 +2273,9 @@ config MIPS_VPE_LOADER
>  	  Includes a loader for loading an elf relocatable object
>  	  onto another VPE and running it.
>  
> +	  Unless you have a specific need, you should use CONFIG_MIPS_RPROC
> +          instead of this.
> +
>  config MIPS_VPE_LOADER_CMP
>  	bool
>  	default "y"
>