From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1034601AbcJaWsj (ORCPT <rfc822;w@1wt.eu>);
        Mon, 31 Oct 2016 18:48:39 -0400
Received: from smtprelay.synopsys.com ([198.182.60.111]:59302 "EHLO
        smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S946292AbcJaWsf (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 31 Oct 2016 18:48:35 -0400
From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: Daniel Lezcano <daniel.lezcano@linaro.org>
CC: <tglx@linutronix.de>, <linux-kernel@vger.kernel.org>,
        <linux-snps-arc@lists.infradead.org>, Noam Camus <noamca@mellanox.com>,
        <Alexey.Brodkin@synopsys.com>,
        Vineet Gupta <Vineet.Gupta1@synopsys.com>
Subject: [PATCH 1/9] ARC: timer: gfrc, rtc: Read BCR to detect whether hardware exists ...
Date: Mon, 31 Oct 2016 15:48:08 -0700
Message-ID: <1477954096-770-2-git-send-email-vgupta@synopsys.com>
X-Mailer: git-send-email 2.7.4
In-Reply-To: <1477954096-770-1-git-send-email-vgupta@synopsys.com>
References: <35bde193-8492-83e0-fb03-8385d8afd007@synopsys.com>
 <1477954096-770-1-git-send-email-vgupta@synopsys.com>
MIME-Version: 1.0
Content-Type: text/plain
X-Originating-IP: [10.10.161.40]
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

... don't rely on cpuinfo populated in arc boot code. This paves wat for
moving this code in drivers/clocksource/

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---
 arch/arc/kernel/time.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c
index f927b8dc6edd..a2db010cde18 100644
--- a/arch/arc/kernel/time.c
+++ b/arch/arc/kernel/time.c
@@ -118,10 +118,11 @@ static struct clocksource arc_counter_gfrc = {
 
 static int __init arc_cs_setup_gfrc(struct device_node *node)
 {
-	int exists = cpuinfo_arc700[0].extn.gfrc;
+	struct mcip_bcr mp;
 	int ret;
 
-	if (WARN(!exists, "Global-64-bit-Ctr clocksource not detected"))
+	READ_BCR(ARC_REG_MCIP_BCR, mp);
+	if (WARN(!mp.gfrc, "Global-64-bit-Ctr clocksource not detected"))
 		return -ENXIO;
 
 	ret = arc_get_timer_clk(node);
@@ -174,10 +175,11 @@ static struct clocksource arc_counter_rtc = {
 
 static int __init arc_cs_setup_rtc(struct device_node *node)
 {
-	int exists = cpuinfo_arc700[smp_processor_id()].extn.rtc;
+	struct bcr_timer timer;
 	int ret;
 
-	if (WARN(!exists, "Local-64-bit-Ctr clocksource not detected"))
+	READ_BCR(ARC_REG_TIMERS_BCR, timer);
+	if (WARN(!timer.rtc, "Local-64-bit-Ctr clocksource not detected"))
 		return -ENXIO;
 
 	/* Local to CPU hence not usable in SMP */
-- 
2.7.4

From mboxrd@z Thu Jan  1 00:00:00 1970
From: Vineet.Gupta1@synopsys.com (Vineet Gupta)
Date: Mon, 31 Oct 2016 15:48:08 -0700
Subject: [PATCH 1/9] ARC: timer: gfrc,
 rtc: Read BCR to detect whether hardware exists ...
In-Reply-To: <1477954096-770-1-git-send-email-vgupta@synopsys.com>
References: <35bde193-8492-83e0-fb03-8385d8afd007@synopsys.com>
 <1477954096-770-1-git-send-email-vgupta@synopsys.com>
List-ID: <linux-snps-arc@lists.infradead.org>
Message-ID: <1477954096-770-2-git-send-email-vgupta@synopsys.com>
To: linux-snps-arc@lists.infradead.org

... don't rely on cpuinfo populated in arc boot code. This paves wat for
moving this code in drivers/clocksource/

Signed-off-by: Vineet Gupta <vgupta at synopsys.com>
---
 arch/arc/kernel/time.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c
index f927b8dc6edd..a2db010cde18 100644
--- a/arch/arc/kernel/time.c
+++ b/arch/arc/kernel/time.c
@@ -118,10 +118,11 @@ static struct clocksource arc_counter_gfrc = {
 
 static int __init arc_cs_setup_gfrc(struct device_node *node)
 {
-	int exists = cpuinfo_arc700[0].extn.gfrc;
+	struct mcip_bcr mp;
 	int ret;
 
-	if (WARN(!exists, "Global-64-bit-Ctr clocksource not detected"))
+	READ_BCR(ARC_REG_MCIP_BCR, mp);
+	if (WARN(!mp.gfrc, "Global-64-bit-Ctr clocksource not detected"))
 		return -ENXIO;
 
 	ret = arc_get_timer_clk(node);
@@ -174,10 +175,11 @@ static struct clocksource arc_counter_rtc = {
 
 static int __init arc_cs_setup_rtc(struct device_node *node)
 {
-	int exists = cpuinfo_arc700[smp_processor_id()].extn.rtc;
+	struct bcr_timer timer;
 	int ret;
 
-	if (WARN(!exists, "Local-64-bit-Ctr clocksource not detected"))
+	READ_BCR(ARC_REG_TIMERS_BCR, timer);
+	if (WARN(!timer.rtc, "Local-64-bit-Ctr clocksource not detected"))
 		return -ENXIO;
 
 	/* Local to CPU hence not usable in SMP */
-- 
2.7.4