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authoreric miao <eric.miao@marvell.com>2008-01-03 11:25:56 +0800
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-01-26 15:07:56 +0000
commit7f7c8a619253c83cf3b1071df3b001811d0c1a6c (patch)
treeb4a80e57ef93e3d669e1cadb561ba975e2ce2228 /fs/partitions/sun.h
parent0ad1fbc86045c2a27ff082c02344131be072699f (diff)
[ARM] pxa: make MFP configuration processor independent
There are two reasons for making the MFP configuration to be processor independent, i.e. removing the relationship of configuration bits with actual MFPR register settings: 1. power management sometimes requires the MFP to be configured differently when in run mode or in low power mode 2. for future integration of pxa{25x,27x} GPIO configurations The modifications include: 1. introducing of processor independent MFP configuration bits, as defined in [include/asm-arm/arch-pxa/mfp.h]: bit 0.. 9 - MFP Pin Number (1024 Pins Maximum) bit 10..12 - Alternate Function Selection bit 13..15 - Drive Strength bit 16..18 - Low Power Mode State bit 19..20 - Low Power Mode Edge Detection bit 21..22 - Run Mode Pull State and so on, 2. moving the processor dependent code from mfp.h into mfp-pxa3xx.h 3. cleaning up of the MFPR bit definitions 4. mapping of processor independent MFP configuration into processor specific MFPR register settings is now totally encapsulated within pxa3xx_mfp_config() 5. using of "unsigned long" instead of invented type of "mfp_cfg_t" according to Documentation/CodingStyle Chapter 5, usage of this in platform code will be slowly removed in later patches Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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