diff options
| author | Carlo Caione <carlo@endlessm.com> | 2015-11-25 15:39:51 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2015-12-22 11:32:13 +0100 |
| commit | 100a606d54a087cfec54efbedba72f36e5a9cdf0 (patch) | |
| tree | 81fab69739528e973b3197c6114fb1da7d2cae91 | |
| parent | 17da678368fac22375f0854c811034e311be23b5 (diff) | |
mmc: core: Introduce MMC_CAP2_NO_SDIO cap
This patch introduce a new MMC_CAP2_NO_SDIO cap used to tell the mmc
core to not send SDIO specific commands.
Signed-off-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/core/core.c | 11 | ||||
| -rw-r--r-- | include/linux/mmc/host.h | 1 |
2 files changed, 9 insertions, 3 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 07b2f086213f..910aa254f23a 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -2476,15 +2476,20 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq) * sdio_reset sends CMD52 to reset card. Since we do not know * if the card is being re-initialized, just send it. CMD52 * should be ignored by SD/eMMC cards. + * Skip it if we already know that we do not support SDIO commands */ - sdio_reset(host); + if (!(host->caps2 & MMC_CAP2_NO_SDIO)) + sdio_reset(host); + mmc_go_idle(host); mmc_send_if_cond(host, host->ocr_avail); /* Order's important: probe SDIO, then SD, then MMC */ - if (!mmc_attach_sdio(host)) - return 0; + if (!(host->caps2 & MMC_CAP2_NO_SDIO)) + if (!mmc_attach_sdio(host)) + return 0; + if (!mmc_attach_sd(host)) return 0; if (!mmc_attach_mmc(host)) diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index f39888cf5017..8dd4d290ab0d 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -290,6 +290,7 @@ struct mmc_host { #define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V) #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17) #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */ +#define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */ mmc_pm_flag_t pm_caps; /* supported pm features */ |