Messages in this thread | | | Date | Tue, 20 Sep 2011 15:21:41 +0300 | From | Adrian Hunter <> | Subject | Re: [PATCH] mmc : export hw reset function info to user |
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On 18/09/11 18:20, Namjae Jeon wrote: > user app should know whether hw reset function is enable to use it. > so I try to add sysfs file of hw reset function like enhanced area.
This conflicts with my patches:
http://marc.info/?l=linux-mmc&m=131462534514277&w=2 http://marc.info/?l=linux-mmc&m=131462534614281&w=2 http://marc.info/?l=linux-mmc&m=131462534714284&w=2 http://marc.info/?l=linux-mmc&m=131462534814287&w=2 http://marc.info/?l=linux-mmc&m=131462535014290&w=2 http://marc.info/?l=linux-mmc&m=131462535214297&w=2
> > Signed-off-by: Namjae Jeon<linkinjeon@gmail.com> > --- > drivers/mmc/core/mmc.c | 6 ++++++ > include/linux/mmc/card.h | 1 + > include/linux/mmc/mmc.h | 1 + > 3 files changed, 8 insertions(+), 0 deletions(-) > > diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c > index 10f5a19..06c3ffc 100644 > --- a/drivers/mmc/core/mmc.c > +++ b/drivers/mmc/core/mmc.c > @@ -355,6 +355,10 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) > card->ext_csd.raw_trim_mult = > ext_csd[EXT_CSD_TRIM_MULT]; > if (card->ext_csd.rev>= 4) { > + /* HW reset function feature support. > + /* user can know it is enable through sysfs interface. > + card->ext_csd.raw_hw_reset_function = > + ext_csd[EXT_CSD_RST_FUNCTION]; > /* > * Enhanced area feature support -- check whether the eMMC > * card has the Enhanced area enabled. If so, export enhanced > @@ -499,6 +503,7 @@ 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_hw_reset_function, "0x%02x\n", card->ext_csd.raw_hw_reset_function); > > static struct attribute *mmc_std_attrs[] = { > &dev_attr_cid.attr, > @@ -514,6 +519,7 @@ 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_hw_reset_function.attr, > NULL, > }; > > diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h > index b460fc2..237bceb 100644 > --- a/include/linux/mmc/card.h > +++ b/include/linux/mmc/card.h > @@ -65,6 +65,7 @@ struct mmc_ext_csd { > unsigned int enhanced_area_size; /* Units: KB */ > unsigned int boot_size; /* in bytes */ > u8 raw_partition_support; /* 160 */ > + u8 raw_hw_reset_function; /* 162 */ > u8 raw_erased_mem_count; /* 181 */ > u8 raw_ext_csd_structure; /* 194 */ > u8 raw_card_type; /* 196 */ > diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h > index 5a794cb..233c932 100644 > --- a/include/linux/mmc/mmc.h > +++ b/include/linux/mmc/mmc.h > @@ -272,6 +272,7 @@ struct _mmc_csd { > > #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ > #define EXT_CSD_PARTITION_SUPPORT 160 /* RO */ > +#define EXT_CSD_RST_FUNCTION 162 /* R/W */ > #define EXT_CSD_WR_REL_PARAM 166 /* RO */ > #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */ > #define EXT_CSD_PART_CONFIG 179 /* R/W */
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