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authorThomas Abraham <thomas.abraham@linaro.org>2012-09-17 22:16:41 +0400
committerChris Ball <cjb@laptop.org>2012-10-03 18:05:18 +0400
commit17403f235e94dcccf95b43138b197c4de2ab6816 (patch)
treeec54f858116e05aa134bf8d8d9f6cbeb82f405cf /drivers/mmc/host/dw_mmc-pltfm.c
parentc91eab4b2564f2424268113ab348eacf9381c2d9 (diff)
downloadlinux-17403f235e94dcccf95b43138b197c4de2ab6816.tar.xz
mmc: dw_mmc: prepare functions in dw_mmc-pltfm for reuse
Platform implementations of dw-mshc controller may choose to extend the features of the standard dw-mshc controller such as adding additional clocking options or modifying the bus interface. Support for such implementation specific extensions can be incorporated into dw_mmc-pltfm, but including multiple such platform specific implementations would convolute the existing dw_mmc-pltfm code. Instead, it would be better to create implementation specific platform drivers to support implementation specific features. Such platforms drivers can reuse the existing infrastructure in dw_mmc-pltfm for resource identification and controller registration and provide support for implementation specific features. So, allow the infrastructure in dw_mmc-pltfm to be reused by other implementation specific platform drivers. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Will Newton <will.newton@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/dw_mmc-pltfm.c')
-rw-r--r--drivers/mmc/host/dw_mmc-pltfm.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c
index 72059050540f..e17da912efff 100644
--- a/drivers/mmc/host/dw_mmc-pltfm.c
+++ b/drivers/mmc/host/dw_mmc-pltfm.c
@@ -23,7 +23,7 @@
#include "dw_mmc.h"
-static int __devinit dw_mci_pltfm_probe(struct platform_device *pdev)
+int dw_mci_pltfm_register(struct platform_device *pdev)
{
struct dw_mci *host;
struct resource *regs;
@@ -52,6 +52,12 @@ static int __devinit dw_mci_pltfm_probe(struct platform_device *pdev)
ret = dw_mci_probe(host);
return ret;
}
+EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
+
+static int __devinit dw_mci_pltfm_probe(struct platform_device *pdev)
+{
+ return dw_mci_pltfm_register(pdev);
+}
static int __devexit dw_mci_pltfm_remove(struct platform_device *pdev)
{
@@ -61,6 +67,7 @@ static int __devexit dw_mci_pltfm_remove(struct platform_device *pdev)
dw_mci_remove(host);
return 0;
}
+EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
#ifdef CONFIG_PM_SLEEP
/*
@@ -94,7 +101,8 @@ static int dw_mci_pltfm_resume(struct device *dev)
#define dw_mci_pltfm_resume NULL
#endif /* CONFIG_PM_SLEEP */
-static SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
+SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
+EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
static const struct of_device_id dw_mci_pltfm_match[] = {
{ .compatible = "snps,dw-mshc", },