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| author | Nicolas Ferre <nicolas.ferre@atmel.com> | 2010-05-26 14:41:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-27 09:12:39 -0700 |
| commit | 99ddffd8ef84c0389e31cb4b90d9e5415ea19cb0 (patch) | |
| tree | 75821d731ab191fd5d1475e83e955397b6ce6c6a /drivers | |
| parent | 6dd6bca3fb6d4f186cdc67ba9e3949ef456dcc53 (diff) | |
| download | kernel_samsung_crespo-99ddffd8ef84c0389e31cb4b90d9e5415ea19cb0.zip kernel_samsung_crespo-99ddffd8ef84c0389e31cb4b90d9e5415ea19cb0.tar.gz kernel_samsung_crespo-99ddffd8ef84c0389e31cb4b90d9e5415ea19cb0.tar.bz2 | |
mmc: atmel-mci: enable SD high speed support
Enable high speed support for atmel-mci driver. This support is dependent
of the revision of the IP and, of course, the capacity of the SD card
used.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Cc: Maciej Sosnowski <maciej.sosnowski@intel.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/atmel-mci.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index df0e8a8..f6013cc 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -952,10 +952,21 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (mci_has_rwproof()) host->mode_reg |= (MCI_MR_WRPROOF | MCI_MR_RDPROOF); - if (list_empty(&host->queue)) + if (atmci_is_mci2()) { + /* setup High Speed mode in relation with card capacity */ + if (ios->timing == MMC_TIMING_SD_HS) + host->cfg_reg |= MCI_CFG_HSMODE; + else + host->cfg_reg &= ~MCI_CFG_HSMODE; + } + + if (list_empty(&host->queue)) { mci_writel(host, MR, host->mode_reg); - else + if (atmci_is_mci2()) + mci_writel(host, CFG, host->cfg_reg); + } else { host->need_clock_update = true; + } spin_unlock_bh(&host->lock); } else { @@ -1052,8 +1063,11 @@ static void atmci_request_end(struct atmel_mci *host, struct mmc_request *mrq) * necessary if set_ios() is called when a different slot is * busy transfering data. */ - if (host->need_clock_update) + if (host->need_clock_update) { mci_writel(host, MR, host->mode_reg); + if (atmci_is_mci2()) + mci_writel(host, CFG, host->cfg_reg); + } host->cur_slot->mrq = NULL; host->mrq = NULL; @@ -1565,6 +1579,8 @@ static int __init atmci_init_slot(struct atmel_mci *host, mmc->f_min = DIV_ROUND_UP(host->bus_hz, 512); mmc->f_max = host->bus_hz / 2; mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; + if (atmci_is_mci2()) + mmc->caps |= MMC_CAP_SD_HIGHSPEED; if (slot_data->bus_width >= 4) mmc->caps |= MMC_CAP_4_BIT_DATA; |