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-rw-r--r--arch/arm/mach-highbank/highbank.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
index af1da34ccf9d..40e36a50304c 100644
--- a/arch/arm/mach-highbank/highbank.c
+++ b/arch/arm/mach-highbank/highbank.c
@@ -15,6 +15,7 @@
*/
#include <linux/clk.h>
#include <linux/clkdev.h>
+#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
@@ -23,6 +24,7 @@
#include <linux/of_platform.h>
#include <linux/of_address.h>
#include <linux/smp.h>
+#include <linux/amba/bus.h>
#include <asm/cacheflush.h>
#include <asm/smp_plat.h>
@@ -149,11 +151,61 @@ static void highbank_power_off(void)
cpu_do_idle();
}
+static int highbank_platform_notifier(struct notifier_block *nb,
+ unsigned long event, void *__dev)
+{
+ struct resource *res;
+ int reg = -1;
+ struct device *dev = __dev;
+
+ if (event != BUS_NOTIFY_ADD_DEVICE)
+ return NOTIFY_DONE;
+
+ if (of_device_is_compatible(dev->of_node, "calxeda,hb-ahci"))
+ reg = 0xc;
+ else if (of_device_is_compatible(dev->of_node, "calxeda,hb-sdhci"))
+ reg = 0x18;
+ else if (of_device_is_compatible(dev->of_node, "arm,pl330"))
+ reg = 0x20;
+ else if (of_device_is_compatible(dev->of_node, "calxeda,hb-xgmac")) {
+ res = platform_get_resource(to_platform_device(dev),
+ IORESOURCE_MEM, 0);
+ if (res) {
+ if (res->start == 0xfff50000)
+ reg = 0;
+ else if (res->start == 0xfff51000)
+ reg = 4;
+ }
+ }
+
+ if (reg < 0)
+ return NOTIFY_DONE;
+
+ if (of_property_read_bool(dev->of_node, "dma-coherent")) {
+ writel(0xff31, sregs_base + reg);
+ set_dma_ops(dev, &arm_coherent_dma_ops);
+ } else
+ writel(0, sregs_base + reg);
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block highbank_amba_nb = {
+ .notifier_call = highbank_platform_notifier,
+};
+
+static struct notifier_block highbank_platform_nb = {
+ .notifier_call = highbank_platform_notifier,
+};
+
static void __init highbank_init(void)
{
pm_power_off = highbank_power_off;
highbank_pm_init();
+ bus_register_notifier(&platform_bus_type, &highbank_platform_nb);
+ bus_register_notifier(&amba_bustype, &highbank_amba_nb);
+
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}