[v2, 3/3] staging: fsl-dpaa2/rtc: support phc_index of ethtool_ts_info

[Yangbo Lu <yangbo.lu@nxp.com>]

This patch is to support phc_index of ethtool_ts_info.
Also make the rtc drvier depend on FSL_DPAA2_ETH because
this driver is only useful when PTP programs are getting
hardware time stamps on the PTP Ethernet packets using the
SO_TIMESTAMPING API.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v2:
	- Added this patch.
---
 drivers/staging/fsl-dpaa2/Kconfig   |    2 +-
 drivers/staging/fsl-dpaa2/rtc/rtc.c |    6 ++----
 drivers/staging/fsl-dpaa2/rtc/rtc.h |   14 ++++++++++++++
 3 files changed, 17 insertions(+), 5 deletions(-)
 create mode 100644 drivers/staging/fsl-dpaa2/rtc/rtc.h

diff --git a/drivers/staging/fsl-dpaa2/Kconfig b/drivers/staging/fsl-dpaa2/Kconfig
index ea2d4aa..cad016a 100644
--- a/drivers/staging/fsl-dpaa2/Kconfig
+++ b/drivers/staging/fsl-dpaa2/Kconfig
@@ -27,7 +27,7 @@ config FSL_DPAA2_ETHSW
 
 config FSL_DPAA2_PTP_CLOCK
 	tristate "Freescale DPAA2 PTP Clock"
-	depends on FSL_DPAA2
+	depends on FSL_DPAA2_ETH
 	select PTP_1588_CLOCK
 	help
 	  This driver adds support for using the DPAA2 1588 timer module
diff --git a/drivers/staging/fsl-dpaa2/rtc/rtc.c b/drivers/staging/fsl-dpaa2/rtc/rtc.c
index 1d6405b..0d52cb8 100644
--- a/drivers/staging/fsl-dpaa2/rtc/rtc.c
+++ b/drivers/staging/fsl-dpaa2/rtc/rtc.c
@@ -9,14 +9,12 @@
 #include <linux/ptp_clock_kernel.h>
 #include <linux/fsl/mc.h>
 
-#include "dprtc.h"
-#include "dprtc-cmd.h"
+#include "rtc.h"
 
 struct ptp_dpaa2_priv {
 	struct fsl_mc_device *rtc_mc_dev;
 	struct ptp_clock *clock;
 	struct ptp_clock_info caps;
-	int phc_index;
 	u32 freq_comp;
 };
 
@@ -173,7 +171,7 @@ static int rtc_probe(struct fsl_mc_device *mc_dev)
 		goto err_close;
 	}
 
-	ptp_dpaa2->phc_index = ptp_clock_index(ptp_dpaa2->clock);
+	dpaa2_phc_index = ptp_clock_index(ptp_dpaa2->clock);
 
 	dev_set_drvdata(dev, ptp_dpaa2);
 
diff --git a/drivers/staging/fsl-dpaa2/rtc/rtc.h b/drivers/staging/fsl-dpaa2/rtc/rtc.h
new file mode 100644
index 0000000..ff2e177
--- /dev/null
+++ b/drivers/staging/fsl-dpaa2/rtc/rtc.h
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2018 NXP
+ */
+
+#ifndef __RTC_H
+#define __RTC_H
+
+#include "dprtc.h"
+#include "dprtc-cmd.h"
+
+extern int dpaa2_phc_index;
+
+#endif
-- 
1.7.1