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OMAP15xx: GPIO: Introduce support for GPIO init
Add support for handling OMAP15xx specific gpio_init by providing platform device data and doing device registration. Signed-off-by: Charulatha V <charu@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
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Varadarajan, Charulatha
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Tony Lindgren
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Dec 8, 2010
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/* | ||
* OMAP15xx specific gpio init | ||
* | ||
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ | ||
* | ||
* 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 as | ||
* published by the Free Software Foundation version 2. | ||
* | ||
* This program is distributed "as is" WITHOUT ANY WARRANTY of any | ||
* kind, whether express or implied; without even the implied warranty | ||
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
* GNU General Public License for more details. | ||
*/ | ||
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#include <linux/gpio.h> | ||
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#define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE | ||
#define OMAP1510_GPIO_BASE 0xFFFCE000 | ||
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/* gpio1 */ | ||
static struct __initdata resource omap15xx_mpu_gpio_resources[] = { | ||
{ | ||
.start = OMAP1_MPUIO_VBASE, | ||
.end = OMAP1_MPUIO_VBASE + SZ_2K - 1, | ||
.flags = IORESOURCE_MEM, | ||
}, | ||
{ | ||
.start = INT_MPUIO, | ||
.flags = IORESOURCE_IRQ, | ||
}, | ||
}; | ||
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static struct __initdata omap_gpio_platform_data omap15xx_mpu_gpio_config = { | ||
.virtual_irq_start = IH_MPUIO_BASE, | ||
.bank_type = METHOD_MPUIO, | ||
.bank_width = 16, | ||
}; | ||
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static struct __initdata platform_device omap15xx_mpu_gpio = { | ||
.name = "omap_gpio", | ||
.id = 0, | ||
.dev = { | ||
.platform_data = &omap15xx_mpu_gpio_config, | ||
}, | ||
.num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources), | ||
.resource = omap15xx_mpu_gpio_resources, | ||
}; | ||
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/* gpio2 */ | ||
static struct __initdata resource omap15xx_gpio_resources[] = { | ||
{ | ||
.start = OMAP1510_GPIO_BASE, | ||
.end = OMAP1510_GPIO_BASE + SZ_2K - 1, | ||
.flags = IORESOURCE_MEM, | ||
}, | ||
{ | ||
.start = INT_GPIO_BANK1, | ||
.flags = IORESOURCE_IRQ, | ||
}, | ||
}; | ||
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static struct __initdata omap_gpio_platform_data omap15xx_gpio_config = { | ||
.virtual_irq_start = IH_GPIO_BASE, | ||
.bank_type = METHOD_GPIO_1510, | ||
.bank_width = 16, | ||
}; | ||
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static struct __initdata platform_device omap15xx_gpio = { | ||
.name = "omap_gpio", | ||
.id = 1, | ||
.dev = { | ||
.platform_data = &omap15xx_gpio_config, | ||
}, | ||
.num_resources = ARRAY_SIZE(omap15xx_gpio_resources), | ||
.resource = omap15xx_gpio_resources, | ||
}; | ||
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/* | ||
* omap15xx_gpio_init needs to be done before | ||
* machine_init functions access gpio APIs. | ||
* Hence omap15xx_gpio_init is a postcore_initcall. | ||
*/ | ||
static int __init omap15xx_gpio_init(void) | ||
{ | ||
if (!cpu_is_omap15xx()) | ||
return -EINVAL; | ||
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platform_device_register(&omap15xx_mpu_gpio); | ||
platform_device_register(&omap15xx_gpio); | ||
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gpio_bank_count = 2; | ||
return 0; | ||
} | ||
postcore_initcall(omap15xx_gpio_init); |
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