diff options
Diffstat (limited to 'drivers/mmc/core/mmc.c')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 69fb2275845c..254713bce18c 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -96,6 +96,7 @@ static int mmc_decode_cid(struct mmc_card *card) card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); + card->cid.prod_rev = UNSTUFF_BITS(resp, 48, 8); card->cid.serial = UNSTUFF_BITS(resp, 16, 32); card->cid.month = UNSTUFF_BITS(resp, 12, 4); card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; @@ -425,6 +426,11 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) /* Check whether the eMMC card supports background ops */ if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) card->ext_csd.bk_ops = 1; + + /* Check whether the eMMC card needs proactive refresh */ + if ((card->cid.manfid == 0x90) && ((card->cid.prod_rev == 0x73) + || (card->cid.prod_rev == 0x7b))) + card->ext_csd.refresh = 1; } if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) @@ -672,6 +678,17 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, if (err) goto free_card; + if (card->ext_csd.refresh) { + init_timer(&card->timer); + card->timer.data = (unsigned long) card; + card->timer.function = mmc_refresh; + card->timer.expires = MMC_BKOPS_INTERVAL < + MMC_REFRESH_INTERVAL ? MMC_BKOPS_INTERVAL : + MMC_REFRESH_INTERVAL; + card->timer.expires *= HZ; + card->timer.expires += jiffies; + add_timer(&card->timer); + } /* If doing byte addressing, check if required to do sector * addressing. Handle the case of <2GB cards needing sector * addressing. See section 8.1 JEDEC Standard JED84-A441; |