[deliverable/linux.git] / arch / arm / mach-omap2 / gpmc-smsc911x.c

/*
 * 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.
 */
#define pr_fmt(fmt) "%s: " fmt, __func__

#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 "gpmc.h"
#include "gpmc-smsc911x.h"

static struct resource gpmc_smsc911x_resources[] = {
	[0] = {
		.flags		= IORESOURCE_MEM,
	},
	[1] = {
		.flags		= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
	},
};

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,
};

/*
 * 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 *gpmc_cfg)
{
	struct platform_device *pdev;
	unsigned long cs_mem_base;
	int ret;

	if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
		pr_err("Failed to request GPMC mem region\n");
		return;
	}

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

	if (gpio_request_one(gpmc_cfg->gpio_irq, GPIOF_IN, "smsc911x irq")) {
		pr_err("Failed to request IRQ GPIO%d\n", gpmc_cfg->gpio_irq);
		goto free1;
	}

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

	if (gpio_is_valid(gpmc_cfg->gpio_reset)) {
		ret = gpio_request_one(gpmc_cfg->gpio_reset,
				       GPIOF_OUT_INIT_HIGH, "smsc911x reset");
		if (ret) {
			pr_err("Failed to request reset GPIO%d\n",
			       gpmc_cfg->gpio_reset);
			goto free2;
		}

		gpio_set_value(gpmc_cfg->gpio_reset, 0);
		msleep(100);
		gpio_set_value(gpmc_cfg->gpio_reset, 1);
	}

	gpmc_smsc911x_config.flags = gpmc_cfg->flags ? : SMSC911X_USE_16BIT;

	pdev = platform_device_register_resndata(NULL, "smsc911x", gpmc_cfg->id,
		 gpmc_smsc911x_resources, ARRAY_SIZE(gpmc_smsc911x_resources),
		 &gpmc_smsc911x_config, sizeof(gpmc_smsc911x_config));
	if (IS_ERR(pdev)) {
		pr_err("Unable to register platform 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);

	pr_err("Could not initialize smsc911x device\n");
}
Commit	Line	Data
cdd280b9 TN	1	/*
	2	* linux/arch/arm/mach-omap2/gpmc-smsc911x.c
	3	*
	4	* Copyright (C) 2009 Li-Pro.Net
	5	* Stephan Linz <linz@li-pro.net>
	6	*
	7	* Modified from linux/arch/arm/mach-omap2/gpmc-smc91x.c
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*/
11383a9b	13	#define pr_fmt(fmt) "%s: " fmt, __func__
cdd280b9 TN	14
	15	#include <linux/kernel.h>
	16	#include <linux/platform_device.h>
	17	#include <linux/gpio.h>
	18	#include <linux/delay.h>
	19	#include <linux/interrupt.h>
	20	#include <linux/io.h>
	21	#include <linux/smsc911x.h>
	22
3ef5d007	23	#include "gpmc.h"
ac839b3c	24	#include "gpmc-smsc911x.h"
cdd280b9	25
cdd280b9 TN	26	static struct resource gpmc_smsc911x_resources[] = {
	27	[0] = {
	28	.flags = IORESOURCE_MEM,
	29	},
	30	[1] = {
f0949f73	31	.flags = IORESOURCE_IRQ \| IORESOURCE_IRQ_LOWLEVEL,
cdd280b9 TN	32	},
	33	};
	34
	35	static struct smsc911x_platform_config gpmc_smsc911x_config = {
	36	.phy_interface = PHY_INTERFACE_MODE_MII,
	37	.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
	38	.irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
cdd280b9 TN	39	};
cdd280b9 TN	40
cdd280b9 TN	41	/*
	42	* Initialize smsc911x device connected to the GPMC. Note that we
	43	* assume that pin multiplexing is done in the board-*.c file,
	44	* or in the bootloader.
	45	*/
54da0784	46	void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *gpmc_cfg)
cdd280b9	47	{
21b42731	48	struct platform_device *pdev;
cdd280b9 TN	49	unsigned long cs_mem_base;
	50	int ret;
	51
cdd280b9	52	if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
11383a9b	53	pr_err("Failed to request GPMC mem region\n");
cdd280b9 TN	54	return;
	55	}
	56
	57	gpmc_smsc911x_resources[0].start = cs_mem_base + 0x0;
	58	gpmc_smsc911x_resources[0].end = cs_mem_base + 0xff;
	59
bc593f5d	60	if (gpio_request_one(gpmc_cfg->gpio_irq, GPIOF_IN, "smsc911x irq")) {
11383a9b	61	pr_err("Failed to request IRQ GPIO%d\n", gpmc_cfg->gpio_irq);
cdd280b9 TN	62	goto free1;
	63	}
	64
cdd280b9	65	gpmc_smsc911x_resources[1].start = gpio_to_irq(gpmc_cfg->gpio_irq);
cdd280b9 TN	66
cdd280b9 TN	67	if (gpio_is_valid(gpmc_cfg->gpio_reset)) {
bc593f5d IG	68	ret = gpio_request_one(gpmc_cfg->gpio_reset,
bc593f5d IG	69	GPIOF_OUT_INIT_HIGH, "smsc911x reset");
cdd280b9	70	if (ret) {
11383a9b IG	71	pr_err("Failed to request reset GPIO%d\n",
11383a9b IG	72	gpmc_cfg->gpio_reset);
cdd280b9 TN	73	goto free2;
	74	}
	75
cdd280b9 TN	76	gpio_set_value(gpmc_cfg->gpio_reset, 0);
	77	msleep(100);
	78	gpio_set_value(gpmc_cfg->gpio_reset, 1);
	79	}
	80
a0dbf2a7	81	gpmc_smsc911x_config.flags = gpmc_cfg->flags ? : SMSC911X_USE_16BIT;
f0949f73	82
21b42731 MR	83	pdev = platform_device_register_resndata(NULL, "smsc911x", gpmc_cfg->id,
	84	gpmc_smsc911x_resources, ARRAY_SIZE(gpmc_smsc911x_resources),
	85	&gpmc_smsc911x_config, sizeof(gpmc_smsc911x_config));
30e3488c	86	if (IS_ERR(pdev)) {
11383a9b	87	pr_err("Unable to register platform device\n");
cdd280b9 TN	88	gpio_free(gpmc_cfg->gpio_reset);
	89	goto free2;
	90	}
	91
	92	return;
	93
	94	free2:
	95	gpio_free(gpmc_cfg->gpio_irq);
	96	free1:
	97	gpmc_cs_free(gpmc_cfg->cs);
	98
11383a9b	99	pr_err("Could not initialize smsc911x device\n");
cdd280b9	100	}