[PATCH 03/13 v5] OMAP: GPIO: Introduce support for OMAP16xx chip GPIO init

[Charulatha V <charu@ti.com>]

This patch adds support for handling OMAP16xx specific gpio_init
by providing platform device data and doing device registration.

Signed-off-by: Charulatha V <charu@ti.com>
Signed-off-by: Basak, Partha <p-basak2@ti.com>
---
 arch/arm/mach-omap1/gpio16xx.c |  208 ++++++++++++++++++++++++++++++++++++++++
 1 files changed, 208 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/mach-omap1/gpio16xx.c

diff --git a/arch/arm/mach-omap1/gpio16xx.c b/arch/arm/mach-omap1/gpio16xx.c
new file mode 100644
index 0000000..727c52b
--- /dev/null
+++ b/arch/arm/mach-omap1/gpio16xx.c
@@ -0,0 +1,208 @@
+/*
+ * OMAP16XX-specific gpio code
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ *
+ * Author:
+ *	Charulatha V <charu@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/gpio.h>
+
+#define OMAP1610_GPIO1_BASE		0xfffbe400
+#define OMAP1610_GPIO2_BASE		0xfffbec00
+#define OMAP1610_GPIO3_BASE		0xfffbb400
+#define OMAP1610_GPIO4_BASE		0xfffbbc00
+#define OMAP1_MPUIO_VBASE		OMAP1_MPUIO_BASE
+
+static struct omap_gpio_dev_attr omap16xx_gpio_attr = {
+	.bank_width = 16,
+};
+
+/*
+ * OMAP16XX MPU GPIO interface data
+ */
+static struct __initdata resource omap16xx_mpu_gpio_resources[] = {
+	{
+		.start	= OMAP1_MPUIO_VBASE,
+		.end	= OMAP1_MPUIO_VBASE + SZ_2K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= INT_MPUIO,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = {
+	.virtual_irq_start	= IH_MPUIO_BASE,
+	.bank_type		= METHOD_MPUIO,
+	.gpio_attr		= &omap16xx_gpio_attr,
+};
+
+static struct __initdata platform_device omap16xx_mpu_gpio = {
+	.name           = "omap-gpio",
+	.id             = 0,
+	.dev            = {
+		.platform_data = &omap16xx_mpu_gpio_config,
+	},
+	.num_resources = ARRAY_SIZE(omap16xx_mpu_gpio_resources),
+	.resource = omap16xx_mpu_gpio_resources,
+};
+
+/*
+ * OMAP16XX GPIO1 interface data
+ */
+static struct __initdata resource omap16xx_gpio1_resources[] = {
+	{
+		.start	= OMAP1610_GPIO1_BASE,
+		.end	= OMAP1610_GPIO1_BASE + SZ_2K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= INT_GPIO_BANK1,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = {
+	.virtual_irq_start	= IH_GPIO_BASE,
+	.bank_type		= METHOD_GPIO_1610,
+	.gpio_attr		= &omap16xx_gpio_attr,
+};
+
+static struct __initdata platform_device omap16xx_gpio1 = {
+	.name           = "omap-gpio",
+	.id             = 1,
+	.dev            = {
+		.platform_data = &omap16xx_gpio1_config,
+	},
+	.num_resources = ARRAY_SIZE(omap16xx_gpio1_resources),
+	.resource = omap16xx_gpio1_resources,
+};
+
+/*
+ * OMAP16XX GPIO2 interface data
+ */
+static struct __initdata resource omap16xx_gpio2_resources[] = {
+	{
+		.start	= OMAP1610_GPIO2_BASE,
+		.end	= OMAP1610_GPIO2_BASE + SZ_2K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= INT_1610_GPIO_BANK2,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct __initdata omap_gpio_platform_data omap16xx_gpio2_config = {
+	.virtual_irq_start	= IH_GPIO_BASE + 16,
+	.bank_type		= METHOD_GPIO_1610,
+	.gpio_attr		= &omap16xx_gpio_attr,
+};
+
+static struct __initdata platform_device omap16xx_gpio2 = {
+	.name           = "omap-gpio",
+	.id             = 2,
+	.dev            = {
+		.platform_data = &omap16xx_gpio2_config,
+	},
+	.num_resources = ARRAY_SIZE(omap16xx_gpio2_resources),
+	.resource = omap16xx_gpio2_resources,
+};
+
+/*
+ * OMAP16XX GPIO3 interface data
+ */
+static struct __initdata resource omap16xx_gpio3_resources[] = {
+	{
+		.start	= OMAP1610_GPIO3_BASE,
+		.end	= OMAP1610_GPIO3_BASE + SZ_2K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= INT_1610_GPIO_BANK3,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct __initdata omap_gpio_platform_data omap16xx_gpio3_config = {
+	.virtual_irq_start	= IH_GPIO_BASE + 32,
+	.bank_type		= METHOD_GPIO_1610,
+	.gpio_attr		= &omap16xx_gpio_attr,
+};
+
+static struct __initdata platform_device omap16xx_gpio3 = {
+	.name           = "omap-gpio",
+	.id             = 3,
+	.dev            = {
+		.platform_data = &omap16xx_gpio3_config,
+	},
+	.num_resources = ARRAY_SIZE(omap16xx_gpio3_resources),
+	.resource = omap16xx_gpio3_resources,
+};
+
+/*
+ * OMAP16XX GPIO4 interface data
+  */
+static struct __initdata resource omap16xx_gpio4_resources[] = {
+	{
+		.start	= OMAP1610_GPIO4_BASE,
+		.end	= OMAP1610_GPIO4_BASE + SZ_2K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= INT_1610_GPIO_BANK4,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct __initdata omap_gpio_platform_data omap16xx_gpio4_config = {
+	.virtual_irq_start	= IH_GPIO_BASE + 48,
+	.bank_type		= METHOD_GPIO_1610,
+	.gpio_attr		= &omap16xx_gpio_attr,
+};
+
+static struct __initdata platform_device omap16xx_gpio4 = {
+	.name           = "omap-gpio",
+	.id             = 4,
+	.dev            = {
+		.platform_data = &omap16xx_gpio4_config,
+	},
+	.num_resources = ARRAY_SIZE(omap16xx_gpio4_resources),
+	.resource = omap16xx_gpio4_resources,
+};
+
+static struct __initdata platform_device * omap16xx_gpio_dev[] = {
+	&omap16xx_mpu_gpio,
+	&omap16xx_gpio1,
+	&omap16xx_gpio2,
+	&omap16xx_gpio3,
+	&omap16xx_gpio4,
+};
+
+/*
+ * omap16xx_gpio_init needs to be done before
+ * machine_init functions access gpio APIs.
+ * Hence omap16xx_gpio_init is a postcore_initcall.
+ */
+static int __init omap16xx_gpio_init(void)
+{
+	int i;
+
+	if (!cpu_is_omap16xx())
+		return -EINVAL;
+
+	for (i = 0; i < sizeof(omap16xx_gpio_dev); i++)
+			platform_device_register(omap16xx_gpio_dev[i]);
+
+	gpio_bank_count = sizeof(omap16xx_gpio_dev);
+
+	return 0;
+}
+postcore_initcall(omap16xx_gpio_init);
-- 
1.6.3.3