From: Nicolas Ferre <[email protected]> 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 <[email protected]> Reviewed-by: Haavard Skinnemoen <[email protected]> Cc: Maciej Sosnowski <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> --- drivers/mmc/host/atmel-mci.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) diff -puN drivers/mmc/host/atmel-mci.c~mmc-atmel-mci-enable-sd-high-speed-support drivers/mmc/host/atmel-mci.c --- a/drivers/mmc/host/atmel-mci.c~mmc-atmel-mci-enable-sd-high-speed-support +++ a/drivers/mmc/host/atmel-mci.c @@ -952,10 +952,21 @@ static void atmci_set_ios(struct mmc_hos 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 atm * 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 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; _ -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
