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Subject[PATCH 2/5] staging: fsl-mc: define a macro to differentiate root dprc
Date
Define is_root_dprc(dev) to tell whether a device is
root dprc or not via platform_bus_type.

Signed-off-by: Lijun Pan <Lijun.Pan@freescale.com>
---
drivers/staging/fsl-mc/include/mc.h | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/staging/fsl-mc/include/mc.h b/drivers/staging/fsl-mc/include/mc.h
index a933291..483763e 100644
--- a/drivers/staging/fsl-mc/include/mc.h
+++ b/drivers/staging/fsl-mc/include/mc.h
@@ -14,6 +14,7 @@
#include <linux/device.h>
#include <linux/mod_devicetable.h>
#include <linux/list.h>
+#include <linux/platform_device.h>
#include "../include/dprc.h"

#define FSL_MC_VENDOR_FREESCALE 0x1957
@@ -109,6 +110,15 @@ struct fsl_mc_resource {
#define FSL_MC_IS_DPRC 0x0001

/**
+ * root dprc's parent is a platform device
+ * that platform device's bus type is platform_bus_type.
+ */
+#define is_root_dprc(dev) \
+ ((to_fsl_mc_device(dev)->flags & FSL_MC_IS_DPRC) && \
+ ((dev)->bus == &fsl_mc_bus_type) && \
+ ((dev)->parent->bus == &platform_bus_type))
+
+/**
* Default DMA mask for devices on a fsl-mc bus
*/
#define FSL_MC_DEFAULT_DMA_MASK (~0ULL)
--
2.3.3


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