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20 Commits

Author SHA1 Message Date
mav
9f45d71ed9 Only voltage bits should be zero in send_op_cond argument to ignore busy. 2008-10-08 21:10:55 +00:00
mav
3092a6ddfc Generic SD Host Controller driver going to be named sdhci. 2008-10-08 20:00:51 +00:00
mav
74aa2a1a28 Fix bit offset in mmc_sd_switch(). 2008-10-08 18:13:14 +00:00
mav
a13e6527d9 Set of mmc layer improvements: 
- add MMC support.
 - add SDHC support.
 - add 4 and 8 bit bus width support.
 - add High Speed bus timing support.
 2008-10-08 17:35:41 +00:00
imp
97389cb928 Define and use MMC_SECTOR_SIZE. 
Make mmc_get_media_size now return an off_t and remove now useless cast.
 2008-10-02 07:06:59 +00:00
imp
7e5e6d6f27 Make the media size return the block rather than the bytes on the device. 2008-09-29 18:55:45 +00:00
imp
8b764e092e Explicitly set data to NULL rather than relying mmc_wait_for_cmd() to 
do it for us.  There may be commands we have to wait for that need to
set data.

Submitted by:	mav@
 2008-09-29 18:33:08 +00:00
imp
c6c9e7b65c Minor style fixes from mav@ (with similar problems fixed where I noticed 
them):
	#define<tab>
	zero memory when we allocate it
	Put device name in error message.

Submitted by:	mav@
 2008-09-29 18:17:23 +00:00
imp
8a3e9c9a9d Conform to style(9) for return (foo); The files were a mix before. 
Submitted by:	mav@
 2008-09-29 18:05:26 +00:00
imp
10320dbb60 Convert all C++ comments to C style. There's lots of folks that don't 
like them and they don't add enough to be worth standing out.
 2008-09-29 01:32:21 +00:00
imp
ba2b227bfc The parameters to the MMCBR_ACQUIRE_HOST and MMCBR_RELEAES_HOST were 
the device in question, rather than the bus doing the requesting.  Fix
it so that it is the bus.

Submitted by:	mav@
 2008-09-29 01:28:30 +00:00
imp
24e5e160a7 Implement power down, and power down the bus on detach. 
Submitted by:	mav@
 2008-09-28 23:24:52 +00:00
imp
0de91f430b Propigate read-only status of cards. Right now it is read only at 
device attach time.  We may need to read this more often in the
future, but for now simplicity of implementation wins.

Submitted by:	mav@
 2008-09-28 22:40:11 +00:00
imp
db3715c928 The OCR register defines both acceptable voltage bits, as well as bits 
for other things.  Mask out the voltage only bits when returning the
Vdd mask for voltage computation.

Submitted by:	mav@
 2008-09-28 22:27:29 +00:00
imp
bc9f965b27 Other busses on the system use the official capitalization for the 
technology.  Make mmc conform to that.

Submitted by:	mav@
 2008-09-28 22:23:06 +00:00
imp
21506de7c8 Fix line continuation whitespace. 
Submitted by:	mav@
 2008-09-28 22:21:53 +00:00
imp
3cd4cdf93d MFp4: When querying the operating condition of SD cards (using the 
application specific SEND_OP_COND (CMD55 + ACMD41), go ahead and allow
100 tries.  This gives a timeout of a second rather than the ~100ms
the old style produces.

I've had one old 16MB SD card which needs the extra time.  I've now
had reports from the field that other cards need this too.

Originally done at BSDcan 2007 while waiting to give my embedding
madness minitalk.
 2007-06-05 17:04:44 +00:00
imp
f2854751ef A careful reading of the disclaimer that is required to download the 
SD Simplified specification, as well as other SD and SDIO
implemenations I've examined, suggest this disclaimer may be required.
It is unclear to me exactly what the license would be for, or why it
might be required.  Err on the side of caution and include this
disclaimer so anybody deploying this code can judge for themselves.  I
have no further unformation about the details.
 2007-05-26 05:23:36 +00:00
imp
9ebc525a3d First cut at making detach work. also add sdh as a possible mmc bridge. 
Submitted by: Andrea Bittau
(Andrea may have updated patches, but I've tested these)
 2007-05-15 05:49:14 +00:00
imp
30743982ca Preliminary MMC stack. This stack supports SD 1.0 cards only, but 
should be easily adapted to SD 2.0 (aka SDHC), SDIO, MMC and MMCplus
cards.  At the present time, there's only one bridge driver for the
ARM9 based Atmel AT91RM9200.
 2006-10-20 06:39:59 +00:00