linux-kernel - [PATCH v2 08/14] Input: twl4030-vibra: Support for DT booted kernel

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: <1344954162-7985-9-git-send-email-peter.ujfalusi@ti.com>
Date:	Tue, 14 Aug 2012 17:22:36 +0300
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>, Tony Lindgren <tony@...mide.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>
Cc:	Tero Kristo <t-kristo@...com>, alsa-devel@...a-project.org,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree-discuss@...ts.ozlabs.org,
	Benoit Cousson <b-cousson@...com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2 08/14] Input: twl4030-vibra: Support for DT booted kernel

Add support when the kernel has been booted with DT blob. In this case the
pdata is NULL, we need to reach up to the core node and check if the codec
part has been enabled to determine if we need to coexist with the codec or
not.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
 drivers/input/misc/twl4030-vibra.c |   20 ++++++++++++++++++--
 1 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/input/misc/twl4030-vibra.c b/drivers/input/misc/twl4030-vibra.c
index d1e1a7e..2cfc6c7 100644
--- a/drivers/input/misc/twl4030-vibra.c
+++ b/drivers/input/misc/twl4030-vibra.c
@@ -26,6 +26,7 @@
 #include <linux/module.h>
 #include <linux/jiffies.h>
 #include <linux/platform_device.h>
+#include <linux/of.h>
 #include <linux/workqueue.h>
 #include <linux/i2c/twl.h>
 #include <linux/mfd/twl4030-audio.h>
@@ -194,13 +195,28 @@ static int twl4030_vibra_resume(struct device *dev)
 static SIMPLE_DEV_PM_OPS(twl4030_vibra_pm_ops,
 			 twl4030_vibra_suspend, twl4030_vibra_resume);
 
+static bool twl4030_vibra_check_coexist(struct twl4030_vibra_data *pdata,
+			      struct device_node *node)
+{
+	if (pdata && pdata->coexist)
+		return true;
+
+#ifdef CONFIG_OF
+	if (of_find_node_by_name(node, "codec"))
+		return true;
+#endif
+
+	return false;
+}
+
 static int __devinit twl4030_vibra_probe(struct platform_device *pdev)
 {
 	struct twl4030_vibra_data *pdata = pdev->dev.platform_data;
+	struct device_node *twl4030_core_node = pdev->dev.parent->of_node;
 	struct vibra_info *info;
 	int ret;
 
-	if (!pdata) {
+	if (!pdata && !twl4030_core_node) {
 		dev_dbg(&pdev->dev, "platform_data not available\n");
 		return -EINVAL;
 	}
@@ -210,7 +226,7 @@ static int __devinit twl4030_vibra_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	info->dev = &pdev->dev;
-	info->coexist = pdata->coexist;
+	info->coexist = twl4030_vibra_check_coexist(pdata, twl4030_core_node);
 	INIT_WORK(&info->play_work, vibra_play_work);
 
 	info->input_dev = input_allocate_device();
-- 
1.7.8.6

--
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/