Re: [PATCH v4 1/6] mfd: rtsx: add func to split u32 into register

敬锐
2014-12-08T09:50:04Z

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On 12/08/2014 04:49 PM, Lee Jones wrote:
>> diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
>> >index 74346d5..9234449 100644
>> >--- a/include/linux/mfd/rtsx_pci.h
>> >+++ b/include/linux/mfd/rtsx_pci.h
>> >@@ -558,6 +558,7 @@
>> > #define SD_SAMPLE_POINT_CTL 0xFDA7
>> > #define SD_PUSH_POINT_CTL 0xFDA8
>> > #define SD_CMD0 0xFDA9
>> >+#define SD_CMD_START 0x40
> This is a different format at the others in the group on two counts;
> firstly you have 3 whitespace characters after the #define and
> secondly all of the other hex digits in the set are 4 a breast.
> Please add the leading zeros to conform to this format.
>
Hi lee,

This format is more readable, add 2 space means this value is
in groups under register SD_CMD0, and each register value is u8 type,
so use 2 hex digits is right.

The original file make register address and its related value separated,
and group register together.

But I like to write register address and value together,
add 2 space for value to indicate this value is related to above register.

If we add new address/value, I recommend write register define format as
below:

#define REGISTER addr
#define REG_VAL1 val1
#define REG_VAL2 val2

regards.
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