linux-kernel - Re: [PATCH 0/3] Introduce framework for SLIMbus device drivers

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Date:	Sun, 14 Jun 2015 08:32:44 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Sagar Dharia <sdharia@...eaurora.org>
Cc:	broonie@...nel.org, linux-kernel@...r.kernel.org, bp@...e.de,
	poeschel@...onage.de, santosh.shilimkar@...com, treding@...dia.com,
	gong.chen@...ux.intel.com, andreas.noever@...il.com,
	alan@...ux.intel.com, mathieu.poirier@...aro.org, daniel@...ll.ch,
	oded.gabbay@....com, jkosina@...e.cz, sharon.dvir1@...l.huji.ac.il,
	joe@...ches.com, davem@...emloft.net, james.hogan@...tec.com,
	michael.opdenacker@...e-electrons.com, daniel.thompson@...aro.org,
	nkaje@...eaurora.org, mbutler@...ience.com, kheitke@...ience.com,
	mlocke@...eaurora.org, agross@...eaurora.org,
	linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 0/3] Introduce framework for SLIMbus device drivers

On Sat, Jun 13, 2015 at 11:49:15PM -0600, Sagar Dharia wrote:
> SLIMbus (Serial Low Power Interchip Media Bus) is a specification
> developed by MIPI (Mobile Industry Processor Interface) alliance.
> SLIMbus is a 2-wire implementation, which is used to communicate with
> peripheral components like audio-codec.
> SLIMbus uses Time-Division-Multiplexing to accommodate multiple data
> channels, and control channel. Control channel has messages to do
> device-enumeration, messages to send/receive control-data to/from
> slimbus devices, messages for port/channel management, and messages to
> do bandwidth allocation.
> Framework is introduced to support  multiple instances of the bus
> (1 controller per bus), and multiple slave devices per controller.
> SPI and I2C frameworks, and comments from last time when I submitted
> the patches were referred-to while working on this framework.
> 
> These patchsets introduce device-management, OF helpers, and messaging
> APIs for SLIMbus. Framework patches to do channel, port and bandwidth
> management are work-in-progress and will be sent out soon.
> 
> These patchsets were tested on Qualcomm Snapdragon processor board
> using a controller driver, and a slimbus-dev module. This driver and
> module will be sent out after the framework patches mentioned above.

I'd like to see the patches that use this infrastructure before
reviewing these as it's kind of pointless for us to accept these at this
point in time.

thanks,

greg k-h
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