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Commit 188cc042 authored by Loic Pallardy's avatar Loic Pallardy Committed by Chris Ball
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mmc: core: Extend sysfs to ext_csd parameters for RPMB support 



Extend current sysfs access to ext_csd rpmb parameters (RPMB partition
size) and rel_sector information.

Signed-off-by: default avatarLoic Pallardy <loic.pallardy@stericsson.com>
Reviewed-by: default avatarNamjae Jeon <linkinjeon@gmail.com>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Acked-by: default avatarJohan Rudholm <johan.rudholm@stericsson.com>
Acked-by: default avatarKrishna Konda <kkonda@codeaurora.org>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 53d8f974

Documentation/mmc/mmc-dev-attrs.txt

+7 −0
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ All attributes are read-only. 
	serial			Product Serial Number (from CID Register)

	erase_size		Erase group size

	preferred_erase_size	Preferred erase size

	raw_rpmb_size_mult	RPMB partition size

	rel_sectors		Reliable write sector count



Note on Erase Size and Preferred Erase Size:
@@ -65,6 +67,11 @@ Note on Erase Size and Preferred Erase Size: 


	"preferred_erase_size" is in bytes.



Note on raw_rpmb_size_mult:

	"raw_rpmb_size_mult" is a mutliple of 128kB block.

	RPMB size in byte is calculated by using the following equation:

	RPMB partition size = 128kB x raw_rpmb_size_mult



SD/MMC/SDIO Clock Gating Attribute

==================================

drivers/mmc/core/mmc.c

+4 −0
Original line number Diff line number Diff line
@@ -626,6 +626,8 @@ MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 
MMC_DEV_ATTR(enhanced_area_offset, "%llu\n",

		card->ext_csd.enhanced_area_offset);

MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size);

MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult);

MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors);



static struct attribute *mmc_std_attrs[] = {

	&dev_attr_cid.attr,
@@ -641,6 +643,8 @@ static struct attribute *mmc_std_attrs[] = { 
	&dev_attr_serial.attr,

	&dev_attr_enhanced_area_offset.attr,

	&dev_attr_enhanced_area_size.attr,

	&dev_attr_raw_rpmb_size_mult.attr,

	&dev_attr_rel_sectors.attr,

	NULL,

};