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From: Ansuel Smith <ansuelsmth@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Ansuel Smith <ansuelsmth@gmail.com>,
	Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Wim Van Sebroeck <wim@linux-watchdog.org>,
	Guenter Roeck <linux@roeck-us.net>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	linux-arm-msm@vger.kernel.org, linux-watchdog@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] watchdog: qcom-wdt: add option to skip pretimeout
Date: Tue,  4 Feb 2020 16:21:01 +0100
Message-ID: <20200204152104.13278-1-ansuelsmth@gmail.com> (raw)

Some platform like ipq806x doesn't support pretimeout.
As the driver check if there are available interrupts and ipq806x
use msm-timer that require interrupts, the watchdog fail to probe
as request_irq tries to use a ppi interrupt. Add an option to skip
pretimeout setup and use the normal watchdog probe.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
 drivers/watchdog/qcom-wdt.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c
index a494543d3ae1..e689e97e883e 100644
--- a/drivers/watchdog/qcom-wdt.c
+++ b/drivers/watchdog/qcom-wdt.c
@@ -189,6 +189,7 @@ static int qcom_wdt_probe(struct platform_device *pdev)
 	u32 percpu_offset;
 	int irq, ret;
 	struct clk *clk;
+	bool nopretimeout;
 
 	regs = of_device_get_match_data(dev);
 	if (!regs) {
@@ -204,6 +205,8 @@ static int qcom_wdt_probe(struct platform_device *pdev)
 	if (!res)
 		return -ENOMEM;
 
+	nopretimeout = of_property_read_bool(np, "no-pretimeout");
+
 	/* We use CPU0's DGT for the watchdog */
 	if (of_property_read_u32(np, "cpu-offset", &percpu_offset))
 		percpu_offset = 0;
@@ -247,7 +250,7 @@ static int qcom_wdt_probe(struct platform_device *pdev)
 
 	/* check if there is pretimeout support */
 	irq = platform_get_irq(pdev, 0);
-	if (irq > 0) {
+	if (!nopretimeout && irq > 0) {
 		ret = devm_request_irq(dev, irq, qcom_wdt_isr,
 				       IRQF_TRIGGER_RISING,
 				       "wdt_bark", &wdt->wdd);
-- 
2.24.0


             reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-04 15:21 Ansuel Smith [this message]
2020-02-04 15:21 ` [PATCH 2/3] Documentation: watchdog: qcom-wdt: Remove deprecated compatible Ansuel Smith
2020-02-04 16:09   ` Guenter Roeck
2020-02-06 19:15     ` Rob Herring
2020-02-04 15:21 ` [PATCH 3/3] Documentation: watchdog: qcom-wdt: add new no-pretimeout option Ansuel Smith
2020-02-04 16:11   ` Guenter Roeck
2020-02-04 16:08 ` [PATCH 1/3] watchdog: qcom-wdt: add option to skip pretimeout Guenter Roeck
2020-02-04 16:16   ` R: " ansuelsmth
2020-02-04 16:25     ` Guenter Roeck
2020-02-04 17:30       ` R: " ansuelsmth
2020-02-04 17:37         ` Guenter Roeck

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