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cdd280b995
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: Tim Nordell <tim.nordell@logicpd.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
/*
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* linux/arch/arm/mach-omap2/gpmc-smsc911x.c
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*
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* Copyright (C) 2009 Li-Pro.Net
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* Stephan Linz <linz@li-pro.net>
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*
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* Modified from linux/arch/arm/mach-omap2/gpmc-smc91x.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/smsc911x.h>
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#include <plat/board.h>
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#include <plat/gpmc.h>
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#include <plat/gpmc-smsc911x.h>
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static struct omap_smsc911x_platform_data *gpmc_cfg;
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static struct resource gpmc_smsc911x_resources[] = {
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[0] = {
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct smsc911x_platform_config gpmc_smsc911x_config = {
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.phy_interface = PHY_INTERFACE_MODE_MII,
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.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
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.irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
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.flags = SMSC911X_USE_16BIT,
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};
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static struct platform_device gpmc_smsc911x_device = {
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.name = "smsc911x",
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.id = -1,
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.num_resources = ARRAY_SIZE(gpmc_smsc911x_resources),
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.resource = gpmc_smsc911x_resources,
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.dev = {
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.platform_data = &gpmc_smsc911x_config,
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},
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};
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/*
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* Initialize smsc911x device connected to the GPMC. Note that we
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* assume that pin multiplexing is done in the board-*.c file,
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* or in the bootloader.
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*/
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void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *board_data)
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{
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unsigned long cs_mem_base;
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int ret;
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gpmc_cfg = board_data;
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if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
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printk(KERN_ERR "Failed to request GPMC mem for smsc911x\n");
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return;
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}
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gpmc_smsc911x_resources[0].start = cs_mem_base + 0x0;
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gpmc_smsc911x_resources[0].end = cs_mem_base + 0xff;
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if (gpio_request(gpmc_cfg->gpio_irq, "smsc911x irq") < 0) {
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printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n",
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gpmc_cfg->gpio_irq);
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goto free1;
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}
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gpio_direction_input(gpmc_cfg->gpio_irq);
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gpmc_smsc911x_resources[1].start = gpio_to_irq(gpmc_cfg->gpio_irq);
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gpmc_smsc911x_resources[1].flags |=
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(gpmc_cfg->flags & IRQF_TRIGGER_MASK);
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if (gpio_is_valid(gpmc_cfg->gpio_reset)) {
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ret = gpio_request(gpmc_cfg->gpio_reset, "smsc911x reset");
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if (ret) {
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printk(KERN_ERR "Failed to request GPIO%d for smsc911x reset\n",
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gpmc_cfg->gpio_reset);
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goto free2;
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}
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gpio_direction_output(gpmc_cfg->gpio_reset, 1);
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gpio_set_value(gpmc_cfg->gpio_reset, 0);
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msleep(100);
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gpio_set_value(gpmc_cfg->gpio_reset, 1);
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}
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if (platform_device_register(&gpmc_smsc911x_device) < 0) {
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printk(KERN_ERR "Unable to register smsc911x device\n");
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gpio_free(gpmc_cfg->gpio_reset);
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goto free2;
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}
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return;
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free2:
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gpio_free(gpmc_cfg->gpio_irq);
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free1:
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gpmc_cs_free(gpmc_cfg->cs);
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printk(KERN_ERR "Could not initialize smsc911x\n");
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}
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