ARM: OMAP: omap_device: Expose omap_device_{alloc, delete, register}

Expose omap_device_{alloc, delete, register} so we can use them outside
of omap_device.c.

This approach allows users, which need to manipulate an archdata member
of a device before it is registered, to do so. This is also useful
for users who have their devices created very early so they can be used
at ->reserve() time to reserve CMA memory.

The immediate use case for this is to set the private iommu archdata
member, which binds a device to its associated iommu controller.
This way, generic code will be able to attach omap devices to their
iommus, without calling any omap-specific API.

With this in hand, we can further clean the existing mainline OMAP iommu
driver and its mainline users, and focus on generic IOMMU approaches
for future users (rpmsg/remoteproc and the upcoming generic DMA API).

This patch is still considered an interim solution until DT fully materializes
for omap; at that point, this functionality will be removed as DT will
take care of creating the devices and configuring them correctly.

Tested on OMAP4 with a generic rpmsg/remoteproc that doesn't use any
omap-specific IOMMU API anymore.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 3 insertions, 10 deletions

diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index e8d98693d2d..f72fafc9e9f 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -97,14 +97,7 @@
 #define USE_WAKEUP_LAT                  0
 #define IGNORE_WAKEUP_LAT               1
 
-static int omap_device_register(struct platform_device *pdev);
 static int omap_early_device_register(struct platform_device *pdev);
-static struct omap_device *omap_device_alloc(struct platform_device *pdev,
-                                      struct omap_hwmod **ohs, int oh_cnt,
-                                      struct omap_device_pm_latency *pm_lats,
-                                      int pm_lats_cnt);
-static void omap_device_delete(struct omap_device *od);
-
 
 static struct omap_device_pm_latency omap_default_latency[] = {
         {
@@ -509,7 +502,7 @@ static int omap_device_fill_resources(struct omap_device *od,
  *
  * Returns an struct omap_device pointer or ERR_PTR() on error;
  */
-static struct omap_device *omap_device_alloc(struct platform_device *pdev,
+struct omap_device *omap_device_alloc(struct platform_device *pdev,
                                         struct omap_hwmod **ohs, int oh_cnt,
                                         struct omap_device_pm_latency *pm_lats,
                                         int pm_lats_cnt)
@@ -591,7 +584,7 @@ oda_exit1:
         return ERR_PTR(ret);
 }
 
-static void omap_device_delete(struct omap_device *od)
+void omap_device_delete(struct omap_device *od)
 {
         if (!od)
                 return;
@@ -817,7 +810,7 @@ static struct dev_pm_domain omap_device_pm_domain = {
  * platform_device_register() on the underlying platform_device.
  * Returns the return value of platform_device_register().
  */
-static int omap_device_register(struct platform_device *pdev)
+int omap_device_register(struct platform_device *pdev)
 {
         pr_debug("omap_device: %s: registering\n", pdev->name);