Commit 1b8d79c5 authored by Ulf Hansson's avatar Ulf Hansson

mmc: core: Allow hosts to specify non-support for SD commands

There are host drivers which needs to valdiate for non-supported SD
commands and returnn error code for such requests.

To improve and simplify the behaviour, let's invent MMC_CAP2_NO_SD
which these host drivers can set to tell the mmc core to skip sending SD
commands during card initialization.
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 2801b95e
......@@ -2498,6 +2498,7 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
mmc_go_idle(host);
if (!(host->caps2 & MMC_CAP2_NO_SD))
mmc_send_if_cond(host, host->ocr_avail);
/* Order's important: probe SDIO, then SD, then MMC */
......@@ -2505,8 +2506,10 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
if (!mmc_attach_sdio(host))
return 0;
if (!(host->caps2 & MMC_CAP2_NO_SD))
if (!mmc_attach_sd(host))
return 0;
if (!mmc_attach_mmc(host))
return 0;
......
......@@ -309,6 +309,7 @@ struct mmc_host {
#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 */
#define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */
#define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */
mmc_pm_flag_t pm_caps; /* supported pm features */
......
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