diff options
| author | Jungseung Lee <js07.lee@samsung.com> | 2016-12-22 12:37:34 +0900 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-11 11:00:27 +0200 |
| commit | b954e779ff93146e520e32b566b82303b1602b8d (patch) | |
| tree | fa7dd5ab1fb9a335f94c2c6467cb2300c129ef06 /drivers | |
| parent | c911c56cd35bd1d11fe36739c5ebbf39ab7d89d3 (diff) | |
BACKPORT: mmc: core: Export device lifetime information through sysfs
In the eMMC 5.0 version of the spec, several EXT_CSD fields about
device lifetime are added.
- Two types of estimated indications reflected by averaged wear out of memory
- An indication reflected by average reserved blocks
Export the information through sysfs.
Signed-off-by: Jungseung Lee <js07.lee@samsung.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index faedd7c30..aed79a8b8 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -569,6 +569,14 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) } else { card->ext_csd.data_sector_size = 512; } + /* eMMC v5 or later */ + if (card->ext_csd.rev >= 7) { + card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; + card->ext_csd.device_life_time_est_typ_a = + ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; + card->ext_csd.device_life_time_est_typ_b = + ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; + } out: return err; @@ -651,6 +659,10 @@ MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); +MMC_DEV_ATTR(pre_eol_info, "%02x\n", card->ext_csd.pre_eol_info); +MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", + card->ext_csd.device_life_time_est_typ_a, + card->ext_csd.device_life_time_est_typ_b); MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", card->ext_csd.enhanced_area_offset); @@ -670,6 +682,8 @@ static struct attribute *mmc_std_attrs[] = { &dev_attr_name.attr, &dev_attr_oemid.attr, &dev_attr_prv.attr, + &dev_attr_pre_eol_info.attr, + &dev_attr_life_time.attr, &dev_attr_serial.attr, &dev_attr_enhanced_area_offset.attr, &dev_attr_enhanced_area_size.attr, |