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

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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>
This commit is contained in:
Ohad Ben-Cohen
2012-02-20 09:43:29 -08:00
committed by Tony Lindgren
parent d517110243
commit 993e4fbd78
2 changed files with 10 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
arch/arm/plat-omap/include/plat/omap_device.h
View File

@@ -100,6 +100,13 @@ struct platform_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
struct omap_device_pm_latency *pm_lats,
int pm_lats_cnt, int is_early_device);
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);
void omap_device_delete(struct omap_device *od);
int omap_device_register(struct platform_device *pdev);
void __iomem *omap_device_get_rt_va(struct omap_device *od);
struct device *omap_device_get_by_hwmod_name(const char *oh_name);

13
arch/arm/plat-omap/omap_device.c
View File

@@ -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 @@ static struct omap_device *omap_device_alloc(struct platform_device *pdev,
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);