[U-Boot] [PATCH] mx1: add mx1/l support for mxc_i2c

[Stefano Babic <sbabic@denx.de>]

On 09/19/2011 08:57 AM, Marek Vasut wrote:
> On Monday, August 22, 2011 10:56:43 PM Eric Jarrige wrote:
>> Signed-off-by: Eric Jarrige <eric.jarrige@armadeus.org>
>> Cc: Stefano Babic <sbabic@denx.de>
>> Cc: Heiko Schocher <hs@denx.de>
>> @@ -94,6 +98,8 @@ void i2c_init(int speed, int unused)
>>  	/* start the required I2C clock */
>>  	writel(readl(&sc_regs->cgr0) | (3 << I2C_CLK_OFFSET),
>>  		&sc_regs->cgr0);
>> +#elif defined(CONFIG_IMX)
>> +	freq = get_HCLK();
>>  #else
>>  	freq = mxc_get_clock(MXC_IPG_PERCLK);
>>  #endif
> 
> Please, no more ifdefs -- can't you actually modify your header files or add 
> some which would define mxc_get_clock() ? That'd make this way much more clean.

In principl, I agree completely with Marek, and we have tried to get rid
as much of possible of #ifdef in drivers. I know we have already
discussed about the opportunity to fix the whole IMX stuff, and I agreed
with you that this processor is obsolete and make no sense to invest a
lot of time for it. However, what about to define mxc_get_clock() as
simple macro ? Maybe in imx-regs.h, as exceptiion for this processor
(normally the imx-regs.h contains only defines and structures for the
internal registers) ? Something like:

	#define mxc_get_clock(a)	(get_HCLK())

Best regards,
Stefano Babic

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