diff options
| author | Jaehoon Chung <jh80.chung@samsung.com> | 2011-02-25 05:08:15 +0300 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-03-17 22:35:18 +0300 |
| commit | fc3d7720541d4b70cbae25ac121d7e6343125090 (patch) | |
| tree | f1ca22f9e6363c2ddfc84dfdc6e4992299e4f93a | |
| parent | 860cfe796c793bfad1e666de9600852f2d653c57 (diff) | |
| download | linux-fc3d7720541d4b70cbae25ac121d7e6343125090.tar.xz | |
mmc: dw_mmc: add quirks for unreliable card detect, and capabilities
This patch adds quirks and capabilities to platdata.
Some cards don't use the CDn pin; in that case, we assume the card's
inserted. Some boards need other capabilities. So, we add capabilities
in the board's platdata.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | drivers/mmc/host/dw_mmc.c | 10 | ||||
| -rw-r--r-- | include/linux/mmc/dw_mmc.h | 10 |
2 files changed, 15 insertions, 5 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 299c1d61b6b3..94ec6502bdde 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -729,7 +729,9 @@ static int dw_mci_get_cd(struct mmc_host *mmc) struct dw_mci_board *brd = slot->host->pdata; /* Use platform get_cd function, else try onboard card detect */ - if (brd->get_cd) + if (brd->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION) + present = 1; + else if (brd->get_cd) present = !brd->get_cd(slot->id); else present = (mci_readl(slot->host, CDETECT) & (1 << slot->id)) @@ -1403,7 +1405,11 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id) if (host->pdata->setpower) host->pdata->setpower(id, 0); - mmc->caps = 0; + if (host->pdata->caps) + mmc->caps = host->pdata->caps; + else + mmc->caps = 0; + if (host->pdata->get_bus_wd) if (host->pdata->get_bus_wd(slot->id) >= 4) mmc->caps |= MMC_CAP_4_BIT_DATA; diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 3f22c201ee3a..f08163198877 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -166,11 +166,13 @@ struct dw_mci_dma_ops { /* IP Quirks/flags. */ /* DTO fix for command transmission with IDMAC configured */ -#define DW_MCI_QUIRK_IDMAC_DTO BIT(0) +#define DW_MCI_QUIRK_IDMAC_DTO BIT(0) /* delay needed between retries on some 2.11a implementations */ -#define DW_MCI_QUIRK_RETRY_DELAY BIT(1) +#define DW_MCI_QUIRK_RETRY_DELAY BIT(1) /* High Speed Capable - Supports HS cards (upto 50MHz) */ -#define DW_MCI_QUIRK_HIGHSPEED BIT(2) +#define DW_MCI_QUIRK_HIGHSPEED BIT(2) +/* Unreliable card detection */ +#define DW_MCI_QUIRK_BROKEN_CARD_DETECTION BIT(3) struct dma_pdata; @@ -190,6 +192,8 @@ struct dw_mci_board { u32 quirks; /* Workaround / Quirk flags */ unsigned int bus_hz; /* Bus speed */ + unsigned int caps; /* Capabilities */ + /* delay in mS before detecting cards after interrupt */ u32 detect_delay_ms; |