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authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-07-27 14:45:51 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2009-09-17 09:46:56 +0200
commit3bed6e415fc2cbf8d706848a62a48aebe84435e5 (patch)
treec3f82bf4f2875d243cf6cd7d60bf2e568469af92
parentf078237bcf6d5ffe322f6de7f05c0541989a8d35 (diff)
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mfd: Allow multiple MFD cells with the same name
Provide basic support for MFDs having multiple cells of a given type with different IDs by adding an id to the mfd_cell structure and then adding that to the id passed in to mfd_add_devices(). As it stands this approach requires that MFDs using this feature deal with ensuring that there aren't any ID collisions resulting from multiple MFDs of the same type being instantiated. This needs to happen with the existing code too, but with this approach there is a knock on effect on the IDs for non-duplicated devices. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
-rw-r--r--drivers/mfd/mfd-core.c2
-rw-r--r--include/linux/mfd/core.h1
2 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index 54ddf37..ae15e49 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -25,7 +25,7 @@ static int mfd_add_device(struct device *parent, int id,
int ret = -ENOMEM;
int r;
- pdev = platform_device_alloc(cell->name, id);
+ pdev = platform_device_alloc(cell->name, id + cell->id);
if (!pdev)
goto fail_alloc;
diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h
index 49ef857..11d740b 100644
--- a/include/linux/mfd/core.h
+++ b/include/linux/mfd/core.h
@@ -23,6 +23,7 @@
*/
struct mfd_cell {
const char *name;
+ int id;
int (*enable)(struct platform_device *dev);
int (*disable)(struct platform_device *dev);