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ARM: keystone: Update the dma offset for non-dt platform devices 

Tested-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
Santosh Shilimkar 2014-02-24 17:32:59 +02:00
parent 5eb3da7246
commit 14f3791439
1 changed files with 26 additions and 0 deletions
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26
arch/arm/mach-keystone/keystone.c
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@ -31,6 +31,27 @@
#define PLL_RESET BIT(16)
static void __iomem *keystone_rstctrl;
static struct notifier_block platform_nb;
static unsigned long keystone_dma_pfn_offset __read_mostly;
static int keystone_platform_notifier(struct notifier_block *nb,
unsigned long event, void *data)
{
struct device *dev = data;
if (event != BUS_NOTIFY_ADD_DEVICE)
return NOTIFY_DONE;
if (!dev)
return NOTIFY_BAD;
if (!dev->of_node) {
dev->dma_pfn_offset = keystone_dma_pfn_offset;
dev_err(dev, "set dma_pfn_offset%08lx\n",
dev->dma_pfn_offset);
}
return NOTIFY_OK;
}
static void __init keystone_init(void)
{
@ -45,6 +66,8 @@ static void __init keystone_init(void)
pr_warn("ti,keystone-reset iomap error\n");
keystone_pm_runtime_init();
if (platform_nb.notifier_call)
bus_register_notifier(&platform_bus_type, &platform_nb);
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
@ -88,6 +111,9 @@ static void __init keystone_init_meminfo(void)
/* Populate the arch idmap hook */
arch_virt_to_idmap = keystone_virt_to_idmap;
platform_nb.notifier_call = keystone_platform_notifier;
keystone_dma_pfn_offset = PFN_DOWN(KEYSTONE_HIGH_PHYS_START -
KEYSTONE_LOW_PHYS_START);
pr_info("Switching to high address space at 0x%llx\n", (u64)offset);
}