aboutsummaryrefslogtreecommitdiff
path: root/drivers/mmc/host
diff options
context:
space:
mode:
authorBen Dooks <ben-linux@fluff.org>2008-11-03 20:18:56 +0000
committerBen Dooks <ben-linux@fluff.org>2008-11-03 20:30:49 +0000
commit9decb75f46c206066077621536dcd00913c46aa3 (patch)
tree65f83b7666fd885c1c942141cefd72135d5f9901 /drivers/mmc/host
parent791077836cd86c961a1031b2e9bdca09ab63c5d6 (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.c16
-rw-r--r--drivers/mmc/host/sdhci.h2
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);
};