diff options
| author | Ben Dooks <ben-linux@fluff.org> | 2008-11-03 20:18:56 +0000 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2008-11-03 20:30:49 +0000 |
| commit | 9decb75f46c206066077621536dcd00913c46aa3 (patch) | |
| tree | 65f83b7666fd885c1c942141cefd72135d5f9901 /drivers/mmc/host | |
| parent | 791077836cd86c961a1031b2e9bdca09ab63c5d6 (diff) | |
SDHCI: Add timeout hooks
Some controllers do not provide clock information in their
capabilities (in the Samsung case, it is because there are
multiple clock sources available to the controller). Add hooks
to allow the system to supply clock information.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 16 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 2 |
2 files changed, 13 insertions, 5 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 30f64b1f235..e4429394a19 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1604,17 +1604,23 @@ int sdhci_add_host(struct sdhci_host *host) mmc_dev(host->mmc)->dma_mask = &host->dma_mask; } - host->max_clk = - (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT; + if (host->ops->get_max_clock) + host->max_clk = host->ops->get_max_clock(host); + else { + host->max_clk = (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT; + host->max_clk *= 1000000; + } if (host->max_clk == 0) { printk(KERN_ERR "%s: Hardware doesn't specify base clock " "frequency.\n", mmc_hostname(mmc)); return -ENODEV; } - host->max_clk *= 1000000; - host->timeout_clk = - (caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; + if (host->ops->get_timeout_clock) + host->timeout_clk = host->ops->get_timeout_clock(host); + else + host->timeout_clk = + (caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; if (host->timeout_clk == 0) { printk(KERN_ERR "%s: Hardware doesn't specify timeout clock " "frequency.\n", mmc_hostname(mmc)); diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 31f4b1528e7..fb3931c88a3 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -267,6 +267,8 @@ struct sdhci_host { struct sdhci_ops { int (*enable_dma)(struct sdhci_host *host); + unsigned int (*get_max_clock)(struct sdhci_host *host); + unsigned int (*get_timeout_clock)(struct sdhci_host *host); }; |