ptp: rework gianfar_ptp as QorIQ common PTP driver

gianfar_ptp was the PTP clock driver for 1588 timer
module of Freescale QorIQ eTSEC (Enhanced Three-Speed
Ethernet Controllers) platforms. Actually QorIQ DPAA
(Data Path Acceleration Architecture) platforms is
also using the same 1588 timer module in hardware.

This patch is to rework gianfar_ptp as QorIQ common
PTP driver to support both DPAA and eTSEC. Moved
gianfar_ptp.c to drivers/ptp/, renamed it as
ptp_qoriq.c, and renamed many variables. There were
not any function changes.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/Makefile

@@ -14,7 +14,6 @@ obj-$(CONFIG_FS_ENET) += fs_enet/
 obj-$(CONFIG_FSL_PQ_MDIO) += fsl_pq_mdio.o
 obj-$(CONFIG_FSL_XGMAC_MDIO) += xgmac_mdio.o
 obj-$(CONFIG_GIANFAR) += gianfar_driver.o
-obj-$(CONFIG_PTP_1588_CLOCK_GIANFAR) += gianfar_ptp.o
 gianfar_driver-objs := gianfar.o \
 		gianfar_ethtool.o
 obj-$(CONFIG_UCC_GETH) += ucc_geth_driver.o

drivers/ptp/Kconfig

@@ -41,19 +41,19 @@ config PTP_1588_CLOCK_DTE
 	  To compile this driver as a module, choose M here: the module
 	  will be called ptp_dte.
 
-config PTP_1588_CLOCK_GIANFAR
-	tristate "Freescale eTSEC as PTP clock"
+config PTP_1588_CLOCK_QORIQ
+	tristate "Freescale QorIQ 1588 timer as PTP clock"
 	depends on GIANFAR
 	depends on PTP_1588_CLOCK
 	default y
 	help
-	  This driver adds support for using the eTSEC as a PTP
-	  clock. This clock is only useful if your PTP programs are
-	  getting hardware time stamps on the PTP Ethernet packets
-	  using the SO_TIMESTAMPING API.
+	  This driver adds support for using the Freescale QorIQ 1588
+	  timer as a PTP clock. This clock is only useful if your PTP
+	  programs are getting hardware time stamps on the PTP Ethernet
+	  packets using the SO_TIMESTAMPING API.
 
 	  To compile this driver as a module, choose M here: the module
-	  will be called gianfar_ptp.
+	  will be called ptp_qoriq.
 
 config PTP_1588_CLOCK_IXP46X
 	tristate "Intel IXP46x as PTP clock"

drivers/ptp/Makefile

@@ -9,3 +9,4 @@ obj-$(CONFIG_PTP_1588_CLOCK_DTE)	+= ptp_dte.o
 obj-$(CONFIG_PTP_1588_CLOCK_IXP46X)	+= ptp_ixp46x.o
 obj-$(CONFIG_PTP_1588_CLOCK_PCH)	+= ptp_pch.o
 obj-$(CONFIG_PTP_1588_CLOCK_KVM)	+= ptp_kvm.o
+obj-$(CONFIG_PTP_1588_CLOCK_QORIQ)	+= ptp_qoriq.o