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mmc: sdhci: calculate timeout_clk conditionally in sdhci_add_host 

The timeout_clk calculation code in sdhci_add_host is meaningless for
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK.
So only execute them with no SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK set.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Aisheng Dong 2014-08-27 15:26:31 +08:00 committed by Ulf Hansson
parent e33eb8e281
commit 28aab05339
1 changed files with 17 additions and 17 deletions
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34
drivers/mmc/host/sdhci.c
View File

@ -2931,27 +2931,27 @@ int sdhci_add_host(struct sdhci_host *host)
} else
mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200;
host->timeout_clk =
(caps[0] & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT;
if (host->timeout_clk == 0) {
if (host->ops->get_timeout_clock) {
host->timeout_clk = host->ops->get_timeout_clock(host);
} else if (!(host->quirks &
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) {
pr_err("%s: Hardware doesn't specify timeout clock "
"frequency.\n", mmc_hostname(mmc));
return -ENODEV;
if (!(host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) {
host->timeout_clk = (caps[0] & SDHCI_TIMEOUT_CLK_MASK) >>
SDHCI_TIMEOUT_CLK_SHIFT;
if (host->timeout_clk == 0) {
if (host->ops->get_timeout_clock) {
host->timeout_clk =
host->ops->get_timeout_clock(host);
} else {
pr_err("%s: Hardware doesn't specify timeout clock frequency.\n",
mmc_hostname(mmc));
return -ENODEV;
}
}
}
if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT)
host->timeout_clk *= 1000;
if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)
host->timeout_clk = mmc->f_max / 1000;
if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT)
host->timeout_clk *= 1000;
mmc->max_busy_timeout = host->ops->get_max_timeout_count ?
mmc->max_busy_timeout = host->ops->get_max_timeout_count ?
host->ops->get_max_timeout_count(host) : 1 << 27;
mmc->max_busy_timeout /= host->timeout_clk;
mmc->max_busy_timeout /= host->timeout_clk;
}
mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23;
mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;