[PATCH v2 10/16] mmc: block: Detect HPI support in card and host controller
From: Venkatraman S <hidden>
Date: 2012-05-03 14:23:09
Also in:
linux-fsdevel, linux-mmc, linux-omap, lkml
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, the rest · Maintainers:
Ulf Hansson, Linus Torvalds
If both the card and host controller support HPI related operations, set a flag in MMC queue to remember it. Signed-off-by: Venkatraman S <redacted> --- drivers/mmc/card/block.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index dabec55..11833e4 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c@@ -88,6 +88,7 @@ struct mmc_blk_data { unsigned int flags; #define MMC_BLK_CMD23 (1 << 0) /* Can do SET_BLOCK_COUNT for multiblock */ #define MMC_BLK_REL_WR (1 << 1) /* MMC Reliable write support */ +#define MMC_HPI_SUPPORT (1 << 2) unsigned int usage; unsigned int read_only;
@@ -1548,12 +1549,15 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, md->flags |= MMC_BLK_CMD23; } - if (mmc_card_mmc(card) && - md->flags & MMC_BLK_CMD23 && + if (mmc_card_mmc(card)) { + if (md->flags & MMC_BLK_CMD23 && ((card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN) || card->ext_csd.rel_sectors)) { - md->flags |= MMC_BLK_REL_WR; - blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA); + md->flags |= MMC_BLK_REL_WR; + blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA); + } + if (card->host->ops->abort_req && card->ext_csd.hpi_en) + md->flags |= MMC_HPI_SUPPORT; } return md;
--
1.7.10.rc2
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