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mmc: sdhci: Let a driver override timeout clock frequency

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Let a driver override the timeout clock frequency by
populating it before calling sdhci_add_host().  Note
the value will otherwise be zero because sdhci_host is
zeroed when allocated.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2014-09-24 10:27:32 +03:00 committed by Ulf Hansson
parent ff59c520b5
commit f5fa92e58b
1 changed files with 6 additions and 0 deletions
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6
drivers/mmc/host/sdhci.c
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@ -2791,6 +2791,7 @@ int sdhci_add_host(struct sdhci_host *host)
u32 caps[2] = {0, 0};
u32 max_current_caps;
unsigned int ocr_avail;
unsigned int override_timeout_clk;
int ret;
WARN_ON(host == NULL);
@ -2804,6 +2805,8 @@ int sdhci_add_host(struct sdhci_host *host)
if (debug_quirks2)
host->quirks2 = debug_quirks2;
override_timeout_clk = host->timeout_clk;
sdhci_do_reset(host, SDHCI_RESET_ALL);
host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
@ -2970,6 +2973,9 @@ int sdhci_add_host(struct sdhci_host *host)
mmc->max_busy_timeout /= host->timeout_clk;
}
if (override_timeout_clk)
host->timeout_clk = override_timeout_clk;
mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23;
mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;