linux-kernel - [PATCH 3/4] gpio/tegra: Convert to a platform device

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Date:	Thu, 22 Sep 2011 15:06:06 -0600
From:	Stephen Warren <swarren@...dia.com>
To:	Russell King <linux@....linux.org.uk>
Cc:	Arnd Bergmann <arnd@...db.de>, Nicolas Pitre <nico@...xnic.net>,
	Olof Johansson <olof@...om.net>,
	Colin Cross <ccross@...roid.com>,
	Erik Gilling <konkers@...roid.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Peter De Schrijver <pdeschrijver@...dia.com>,
	linux-tegra@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Stephen Warren <swarren@...dia.com>
Subject: [PATCH 3/4] gpio/tegra: Convert to a platform device

Signed-off-by: Stephen Warren <swarren@...dia.com>
---
See patch 0000 for details on dependencies.

 drivers/gpio/gpio-tegra.c |   31 ++++++++++++++++++++-----------
 1 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index 6b65207..849da25 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -20,10 +20,10 @@
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
-
 #include <linux/io.h>
 #include <linux/gpio.h>
 #include <linux/of.h>
+#include <linux/platform_device.h>
 
 #include <asm/mach/irq.h>
 
@@ -333,7 +333,7 @@ static struct irq_chip tegra_gpio_irq_chip = {
  */
 static struct lock_class_key gpio_lock_class;
 
-static int __init tegra_gpio_init(void)
+static int __init tegra_gpio_probe(struct platform_device *pdev)
 {
 	struct tegra_gpio_bank *bank;
 	int gpio;
@@ -347,15 +347,6 @@ static int __init tegra_gpio_init(void)
 		}
 	}
 
-#ifdef CONFIG_OF_GPIO
-	/*
-	 * This isn't ideal, but it gets things hooked up until this
-	 * driver is converted into a platform_device
-	 */
-	tegra_gpio_chip.of_node = of_find_compatible_node(NULL, NULL,
-						"nvidia,tegra20-gpio");
-#endif /* CONFIG_OF_GPIO */
-
 	gpiochip_add(&tegra_gpio_chip);
 
 	for (gpio = 0; gpio < TEGRA_NR_GPIOS; gpio++) {
@@ -384,6 +375,24 @@ static int __init tegra_gpio_init(void)
 	return 0;
 }
 
+static struct of_device_id tegra_gpio_of_match[] __devinitdata = {
+	{ .compatible = "nvidia,tegra20-gpio", },
+	{ },
+};
+
+static struct platform_driver tegra_gpio_driver = {
+	.driver		= {
+		.name	= "tegra-gpio",
+		.owner	= THIS_MODULE,
+		.of_match_table = tegra_gpio_of_match,
+	},
+	.probe		= tegra_gpio_probe,
+};
+
+static int __init tegra_gpio_init(void)
+{
+	return platform_driver_register(&tegra_gpio_driver);
+}
 postcore_initcall(tegra_gpio_init);
 
 void __init tegra_gpio_config(struct tegra_gpio_table *table, int num)
-- 
1.7.0.4

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