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From 3e59da41882a408064cd23f4c9124a7938bdb91f Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Thu, 9 Jan 2014 19:40:14 +0100
Subject: [PATCH 06/15] bcma: get irqs from dt
If bcma was registered with device tree it will search for some nodes
with the irq number and add it to the core configuration.
---
drivers/bcma/main.c | 42 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 41 insertions(+), 1 deletion(-)
--- a/drivers/bcma/main.c
+++ b/drivers/bcma/main.c
@@ -10,6 +10,8 @@
#include <linux/platform_device.h>
#include <linux/bcma/bcma.h>
#include <linux/slab.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
MODULE_LICENSE("GPL");
@@ -120,6 +122,38 @@ static void bcma_release_core_dev(struct
kfree(core);
}
+static struct device_node *bcma_of_find_child_device(struct platform_device *parent,
+ struct bcma_device *core)
+{
+ struct device_node *node;
+ u64 size;
+ const __be32 *reg;
+
+ if (!parent || !parent->dev.of_node)
+ return NULL;
+
+ for_each_child_of_node(parent->dev.of_node, node) {
+ reg = of_get_address(node, 0, &size, 0);
+ if (!reg)
+ continue;
+ if (be32_to_cpup(reg) == core->addr)
+ return node;
+ }
+ return NULL;
+}
+
+static void bcma_of_fill_device(struct platform_device *parent,
+ struct bcma_device *core)
+{
+ struct device_node *node;
+
+ node = bcma_of_find_child_device(parent, core);
+ if (!node)
+ return;
+ core->dev.of_node = node;
+ core->irq = irq_of_parse_and_map(node, 0);
+}
+
static int bcma_register_cores(struct bcma_bus *bus)
{
struct bcma_device *core;
@@ -154,7 +188,13 @@ static int bcma_register_cores(struct bc
break;
case BCMA_HOSTTYPE_SOC:
core->dev.dma_mask = &core->dev.coherent_dma_mask;
- core->dma_dev = &core->dev;
+ if (bus->host_pdev) {
+ core->dma_dev = &bus->host_pdev->dev;
+ core->dev.parent = &bus->host_pdev->dev;
+ bcma_of_fill_device(bus->host_pdev, core);
+ } else {
+ core->dma_dev = &core->dev;
+ }
break;
case BCMA_HOSTTYPE_SDIO:
break;
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