From: Pratyush Anand <pratyush.anand@xxxxxx>
Platform functions passed to the driver may also need some private
data. Till, now following approaches have been taken to manage these
data:
-- SPEAr13xx platform keep it locally in the files defining platform
functions.
-- IMX has created a new ahci platform device as a child of
platform device created by DT and then attached this data as the
driver_data of ahci's dev->parent.
Adding a driver_data field helps in using the same platform driver as
that of created by DT.
Signed-off-by: Pratyush Anand <pratyush.anand@xxxxxx>
Tested-by: Mohit Kumar <mohit.kumar@xxxxxx>
Cc: Viresh Kumar <viresh.linux@xxxxxxxxx>
Cc: spear-devel@xxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: linux-ide@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: Arnd Bergmann <arnd@xxxxxxxx>
---
include/linux/ahci_platform.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/include/linux/ahci_platform.h b/include/linux/ahci_platform.h
index 73a2500..76d35e8 100644
--- a/include/linux/ahci_platform.h
+++ b/include/linux/ahci_platform.h
@@ -28,6 +28,7 @@ struct ahci_platform_data {
const struct ata_port_info *ata_port_info;
unsigned int force_port_map;
unsigned int mask_port_map;
+ void *driver_data;
};
#endif /* _AHCI_PLATFORM_H */
--
1.7.0.1
--
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