linux-kernel - [PATCH 1/3] watchdog: qcom: use timer devicetree binding

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1424485176-8348-2-git-send-email-mathieu@codeaurora.org>
Date:	Fri, 20 Feb 2015 18:19:34 -0800
From:	Mathieu Olivari <mathieu@...eaurora.org>
To:	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	linux@....linux.org.uk, wim@...ana.be, corbet@....net,
	standby24x7@...il.com, mathieu@...eaurora.org
Cc:	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-watchdog@...r.kernel.org
Subject: [PATCH 1/3] watchdog: qcom: use timer devicetree binding

MSM watchdog configuration happens in the same register block as the
timer, so we'll use the same binding as the existing timer.

The qcom-wdt will now be probed when devicetree has an entry compatible
with "qcom,kpss-timer" or "qcom-scss-timer".

Signed-off-by: Mathieu Olivari <mathieu@...eaurora.org>
---
 drivers/watchdog/qcom-wdt.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c
index aa85618..aa03ca8 100644
--- a/drivers/watchdog/qcom-wdt.c
+++ b/drivers/watchdog/qcom-wdt.c
@@ -20,9 +20,9 @@
 #include <linux/reboot.h>
 #include <linux/watchdog.h>
 
-#define WDT_RST		0x0
-#define WDT_EN		0x8
-#define WDT_BITE_TIME	0x24
+#define WDT_RST		0x38
+#define WDT_EN		0x40
+#define WDT_BITE_TIME	0x5C
 
 struct qcom_wdt {
 	struct watchdog_device	wdd;
@@ -117,6 +117,8 @@ static int qcom_wdt_probe(struct platform_device *pdev)
 {
 	struct qcom_wdt *wdt;
 	struct resource *res;
+	struct device_node *np = pdev->dev.of_node;
+	u32 percpu_offset;
 	int ret;
 
 	wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
@@ -124,6 +126,14 @@ static int qcom_wdt_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+	/* We use CPU0's DGT for the watchdog */
+	if (of_property_read_u32(np, "cpu-offset", &percpu_offset))
+		percpu_offset = 0;
+
+	res->start += percpu_offset;
+	res->end += percpu_offset;
+
 	wdt->base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(wdt->base))
 		return PTR_ERR(wdt->base);
@@ -203,9 +213,8 @@ static int qcom_wdt_remove(struct platform_device *pdev)
 }
 
 static const struct of_device_id qcom_wdt_of_table[] = {
-	{ .compatible = "qcom,kpss-wdt-msm8960", },
-	{ .compatible = "qcom,kpss-wdt-apq8064", },
-	{ .compatible = "qcom,kpss-wdt-ipq8064", },
+	{ .compatible = "qcom,kpss-timer" },
+	{ .compatible = "qcom,scss-timer" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, qcom_wdt_of_table);
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/