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Commit cdd280b9 authored by Tim Nordell's avatar Tim Nordell Committed by Tony Lindgren
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ARM: OMAP3LOGIC: Add generic smsc911x support when connected to GPMC 



Introduce of a generic way to setup smsc911x based Ethernet
controller connected to GPMC similar to gpmc-smc91x but without
timing setup.

Signed-off-by: default avatarTim Nordell <tim.nordell@logicpd.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 8430281b

arch/arm/mach-omap2/Makefile

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Original line number Diff line number Diff line
@@ -184,3 +184,6 @@ obj-y += $(nand-m) $(nand-y) 


smc91x-$(CONFIG_SMC91X)			:= gpmc-smc91x.o

obj-y					+= $(smc91x-m) $(smc91x-y)



smsc911x-$(CONFIG_SMSC911X)		:= gpmc-smsc911x.o

obj-y					+= $(smsc911x-m) $(smsc911x-y)

arch/arm/mach-omap2/gpmc-smsc911x.c

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+113 −0
Original line number Diff line number Diff line 
/*

 * linux/arch/arm/mach-omap2/gpmc-smsc911x.c

 *

 * Copyright (C) 2009 Li-Pro.Net

 * Stephan Linz <linz@li-pro.net>

 *

 * Modified from linux/arch/arm/mach-omap2/gpmc-smc91x.c

 *

 * 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/kernel.h>

#include <linux/platform_device.h>

#include <linux/gpio.h>

#include <linux/delay.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/smsc911x.h>



#include <plat/board.h>

#include <plat/gpmc.h>

#include <plat/gpmc-smsc911x.h>



static struct omap_smsc911x_platform_data *gpmc_cfg;



static struct resource gpmc_smsc911x_resources[] = {

	[0] = {

		.flags		= IORESOURCE_MEM,

	},

	[1] = {

		.flags		= IORESOURCE_IRQ,

	},

};



static struct smsc911x_platform_config gpmc_smsc911x_config = {

	.phy_interface	= PHY_INTERFACE_MODE_MII,

	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,

	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,

	.flags		= SMSC911X_USE_16BIT,

};



static struct platform_device gpmc_smsc911x_device = {

	.name		= "smsc911x",

	.id		= -1,

	.num_resources	= ARRAY_SIZE(gpmc_smsc911x_resources),

	.resource	= gpmc_smsc911x_resources,

	.dev		= {

		.platform_data = &gpmc_smsc911x_config,

	},

};



/*

 * Initialize smsc911x device connected to the GPMC. Note that we

 * assume that pin multiplexing is done in the board-*.c file,

 * or in the bootloader.

 */

void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *board_data)

{

	unsigned long cs_mem_base;

	int ret;



	gpmc_cfg = board_data;



	if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {

		printk(KERN_ERR "Failed to request GPMC mem for smsc911x\n");

		return;

	}



	gpmc_smsc911x_resources[0].start = cs_mem_base + 0x0;

	gpmc_smsc911x_resources[0].end = cs_mem_base + 0xff;



	if (gpio_request(gpmc_cfg->gpio_irq, "smsc911x irq") < 0) {

		printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n",

				gpmc_cfg->gpio_irq);

		goto free1;

	}



	gpio_direction_input(gpmc_cfg->gpio_irq);

	gpmc_smsc911x_resources[1].start = gpio_to_irq(gpmc_cfg->gpio_irq);

	gpmc_smsc911x_resources[1].flags |=

					(gpmc_cfg->flags & IRQF_TRIGGER_MASK);



	if (gpio_is_valid(gpmc_cfg->gpio_reset)) {

		ret = gpio_request(gpmc_cfg->gpio_reset, "smsc911x reset");

		if (ret) {

			printk(KERN_ERR "Failed to request GPIO%d for smsc911x reset\n",

					gpmc_cfg->gpio_reset);

			goto free2;

		}



		gpio_direction_output(gpmc_cfg->gpio_reset, 1);

		gpio_set_value(gpmc_cfg->gpio_reset, 0);

		msleep(100);

		gpio_set_value(gpmc_cfg->gpio_reset, 1);

	}



	if (platform_device_register(&gpmc_smsc911x_device) < 0) {

		printk(KERN_ERR "Unable to register smsc911x device\n");

		gpio_free(gpmc_cfg->gpio_reset);

		goto free2;

	}



	return;



free2:

	gpio_free(gpmc_cfg->gpio_irq);

free1:

	gpmc_cs_free(gpmc_cfg->cs);



	printk(KERN_ERR "Could not initialize smsc911x\n");

}

arch/arm/plat-omap/include/plat/gpmc-smsc911x.h

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/*

 * arch/arm/plat-omap/include/plat/gpmc-smsc911x.h

 *

 * Copyright (C) 2009 Li-Pro.Net

 * Stephan Linz <linz@li-pro.net>

 *

 * Modified from arch/arm/plat-omap/include/plat/gpmc-smc91x.h

 *

 * 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.

 */



#ifndef __ASM_ARCH_OMAP_GPMC_SMSC911X_H__



struct omap_smsc911x_platform_data {

	int	cs;

	int	gpio_irq;

	int	gpio_reset;

	u32	flags;

};



#if defined(CONFIG_SMSC911X) || \

	defined(CONFIG_SMSC911X_MODULE)



extern void gpmc_smsc911x_init(struct omap_smsc911x_platform_data *d);



#else



static inline void gpmc_smsc911x_init(struct omap_smsc911x_platform_data *d)

{

}



#endif

#endif