From mboxrd@z Thu Jan  1 00:00:00 1970
From: davidb@codeaurora.org (David Brown)
Date: Wed, 19 Jan 2011 09:31:55 -0800
Subject: [PATCH 2/2] serial: msm: Add support for UARTDM cores
In-Reply-To: <20110119082534.GA9569@gallagher> (Jamie Iles's message of "Wed,
	19 Jan 2011 08:25:34 +0000")
References: <1295407585-18386-1-git-send-email-stepanm@codeaurora.org>
	<20110119082534.GA9569@gallagher>
Message-ID: <8yaaaiwsstw.fsf@huya.qualcomm.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Wed, Jan 19 2011, Jamie Iles wrote:

>> @@ -38,9 +40,20 @@ struct msm_port {
>>  	struct uart_port	uart;
>>  	char			name[16];
>>  	struct clk		*clk;
>> +	struct clk		*pclk;
>>  	unsigned int		imr;
>> +	unsigned int            *gsbi_base;
>> +	int			is_dm;
>> +	unsigned int		old_snap_state;
>>  };
>
> Out of interest, what does .is_dm mean?  Is that obvious to someone who 
> knows about msm?

It would be clear to people rather familiar with the chip, but I agree
it's probably not that clear of a name.

We have two UART blocks we use in the MSMs, the older one, supported by
this driver before this change, and a newer one that was designed to
work with our DMA engine (known as the Data Mover, or dm).  This newer
UART can be used in a somewhat compatible manner when being used for
serial-port type operations.

I'm not sure what would be a better name for the flag, though.  The
block is called UARTDM.

David

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