linux-kernel - [PATCH 1/3] Input: ti_am335x_tsc

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: <1463397984-15766-2-git-send-email-vigneshr@ti.com>
Date:	Mon, 16 May 2016 16:56:22 +0530
From:	Vignesh R <vigneshr@...com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Lee Jones <lee.jones@...aro.org>
CC:	Vignesh R <vigneshr@...com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Dave Gerlach <d-gerlach@...com>, <linux-input@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 1/3] Input: ti_am335x_tsc - Mark IRQ as wakeup capable

On AM335x, ti_am335x_tsc can wake up the system from suspend, mark the
IRQ as wakeup capable, so that device irq is not disabled during system
suspend.

Signed-off-by: Vignesh R <vigneshr@...com>
---
 drivers/input/touchscreen/ti_am335x_tsc.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index 8b3f15ca7725..f9fefbe337b9 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -27,6 +27,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/sort.h>
+#include <linux/pm_wakeirq.h>
 
 #include <linux/mfd/ti_am335x_tscadc.h>
 
@@ -432,6 +433,12 @@ static int titsc_probe(struct platform_device *pdev)
 		goto err_free_mem;
 	}
 
+	if (device_may_wakeup(tscadc_dev->dev)) {
+		err = dev_pm_set_wake_irq(tscadc_dev->dev, ts_dev->irq);
+		if (err)
+			dev_err(&pdev->dev, "irq wake enable failed.\n");
+	}
+
 	titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES);
 	titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_EOS);
 	err = titsc_config_wires(ts_dev);
@@ -462,6 +469,7 @@ static int titsc_probe(struct platform_device *pdev)
 	return 0;
 
 err_free_irq:
+	dev_pm_clear_wake_irq(tscadc_dev->dev);
 	free_irq(ts_dev->irq, ts_dev);
 err_free_mem:
 	input_free_device(input_dev);
@@ -474,6 +482,7 @@ static int titsc_remove(struct platform_device *pdev)
 	struct titsc *ts_dev = platform_get_drvdata(pdev);
 	u32 steps;
 
+	dev_pm_clear_wake_irq(ts_dev->mfd_tscadc->dev);
 	free_irq(ts_dev->irq, ts_dev);
 
 	/* total steps followed by the enable mask */
-- 
2.8.2