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Diffstat (limited to 'arch/arm/mach-omap2/omap_device.c')
-rw-r--r--arch/arm/mach-omap2/omap_device.c137
1 files changed, 106 insertions, 31 deletions
diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
index acbede082b5b..50f81b2d22b7 100644
--- a/arch/arm/mach-omap2/omap_device.c
+++ b/arch/arm/mach-omap2/omap_device.c
@@ -35,6 +35,8 @@
#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <linux/notifier.h>
#include "common.h"
@@ -522,6 +524,91 @@ void omap_device_delete(struct omap_device *od)
}
/**
+ * omap_device_copy_resources - Add legacy IO and IRQ resources
+ * @oh: interconnect target module
+ * @pdev: platform device to copy resources to
+ *
+ * We still have legacy DMA and smartreflex needing resources.
+ * Let's populate what they need until we can eventually just
+ * remove this function. Note that there should be no need to
+ * call this from omap_device_build_from_dt(), nor should there
+ * be any need to call it for other devices.
+ */
+static int
+omap_device_copy_resources(struct omap_hwmod *oh,
+ struct platform_device *pdev)
+{
+ struct device_node *np, *child;
+ struct property *prop;
+ struct resource *res;
+ const char *name;
+ int error, irq = 0;
+
+ if (!oh || !oh->od || !oh->od->pdev) {
+ error = -EINVAL;
+ goto error;
+ }
+
+ np = oh->od->pdev->dev.of_node;
+ if (!np) {
+ error = -ENODEV;
+ goto error;
+ }
+
+ res = kzalloc(sizeof(*res) * 2, GFP_KERNEL);
+ if (!res)
+ return -ENOMEM;
+
+ /* Do we have a dts range for the interconnect target module? */
+ error = omap_hwmod_parse_module_range(oh, np, res);
+
+ /* No ranges, rely on device reg entry */
+ if (error)
+ error = of_address_to_resource(np, 0, res);
+ if (error)
+ goto free;
+
+ /* SmartReflex needs first IO resource name to be "mpu" */
+ res[0].name = "mpu";
+
+ /*
+ * We may have a configured "ti,sysc" interconnect target with a
+ * dts child with the interrupt. If so use the first child's
+ * first interrupt for "ti-hwmods" legacy support.
+ */
+ of_property_for_each_string(np, "compatible", prop, name)
+ if (!strncmp("ti,sysc-", name, 8))
+ break;
+
+ child = of_get_next_available_child(np, NULL);
+
+ if (name)
+ irq = irq_of_parse_and_map(child, 0);
+ if (!irq)
+ irq = irq_of_parse_and_map(np, 0);
+ if (!irq)
+ goto free;
+
+ /* Legacy DMA code needs interrupt name to be "0" */
+ res[1].start = irq;
+ res[1].end = irq;
+ res[1].flags = IORESOURCE_IRQ;
+ res[1].name = "0";
+
+ error = platform_device_add_resources(pdev, res, 2);
+
+free:
+ kfree(res);
+
+error:
+ WARN(error, "%s: %s device %s failed: %i\n",
+ __func__, oh->name, dev_name(&pdev->dev),
+ error);
+
+ return error;
+}
+
+/**
* omap_device_build - build and register an omap_device with one omap_hwmod
* @pdev_name: name of the platform_device driver to use
* @pdev_id: this platform_device's connection ID
@@ -540,45 +627,24 @@ struct platform_device __init *omap_device_build(const char *pdev_name,
struct omap_hwmod *oh,
void *pdata, int pdata_len)
{
- struct omap_hwmod *ohs[] = { oh };
-
- if (!oh)
- return ERR_PTR(-EINVAL);
-
- return omap_device_build_ss(pdev_name, pdev_id, ohs, 1, pdata,
- pdata_len);
-}
-
-/**
- * omap_device_build_ss - build and register an omap_device with multiple hwmods
- * @pdev_name: name of the platform_device driver to use
- * @pdev_id: this platform_device's connection ID
- * @oh: ptr to the single omap_hwmod that backs this omap_device
- * @pdata: platform_data ptr to associate with the platform_device
- * @pdata_len: amount of memory pointed to by @pdata
- *
- * Convenience function for building and registering an omap_device
- * subsystem record. Subsystem records consist of multiple
- * omap_hwmods. This function in turn builds and registers a
- * platform_device record. Returns an ERR_PTR() on error, or passes
- * along the return value of omap_device_register().
- */
-struct platform_device __init *omap_device_build_ss(const char *pdev_name,
- int pdev_id,
- struct omap_hwmod **ohs,
- int oh_cnt, void *pdata,
- int pdata_len)
-{
int ret = -ENOMEM;
struct platform_device *pdev;
struct omap_device *od;
- if (!ohs || oh_cnt == 0 || !pdev_name)
+ if (!oh || !pdev_name)
return ERR_PTR(-EINVAL);
if (!pdata && pdata_len > 0)
return ERR_PTR(-EINVAL);
+ if (strncmp(oh->name, "smartreflex", 11) &&
+ strncmp(oh->name, "dma", 3)) {
+ pr_warn("%s need to update %s to probe with dt\na",
+ __func__, pdev_name);
+ ret = -ENODEV;
+ goto odbs_exit;
+ }
+
pdev = platform_device_alloc(pdev_name, pdev_id);
if (!pdev) {
ret = -ENOMEM;
@@ -591,7 +657,16 @@ struct platform_device __init *omap_device_build_ss(const char *pdev_name,
else
dev_set_name(&pdev->dev, "%s", pdev->name);
- od = omap_device_alloc(pdev, ohs, oh_cnt);
+ /*
+ * Must be called before omap_device_alloc() as oh->od
+ * only contains the currently registered omap_device
+ * and will get overwritten by omap_device_alloc().
+ */
+ ret = omap_device_copy_resources(oh, pdev);
+ if (ret)
+ goto odbs_exit1;
+
+ od = omap_device_alloc(pdev, &oh, 1);
if (IS_ERR(od))
goto odbs_exit1;

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