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review.shift-gmbh.com / SHIFTPHONES / kernel / shift / mainline / f0949f73a75093fb86d6554101bd79046633a297 / . / arch / arm / mach-omap2 / gpmc-smsc911x.c
blob: b331f3cd38f1221a928cc9d61412269774ff3526 [file] [log] [blame]
Tim Nordellcdd280b92010-09-27 16:05:49 +0000[diff] [blame]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 */
13
14#include <linux/kernel.h>
15#include <linux/platform_device.h>
16#include <linux/gpio.h>
17#include <linux/delay.h>
18#include <linux/interrupt.h>
19#include <linux/io.h>
20#include <linux/smsc911x.h>
21
22#include <plat/board.h>
23#include <plat/gpmc.h>
24#include <plat/gpmc-smsc911x.h>
25
26static struct omap_smsc911x_platform_data *gpmc_cfg;
27
28static struct resource gpmc_smsc911x_resources[] = {
29 [0] = {
30 .flags = IORESOURCE_MEM,
31 },
32 [1] = {
Mike Rapoportf0949f72011-04-16 22:29:29 +0000[diff] [blame^]33 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
Tim Nordellcdd280b92010-09-27 16:05:49 +0000[diff] [blame]34 },
35};
36
37static struct smsc911x_platform_config gpmc_smsc911x_config = {
38 .phy_interface = PHY_INTERFACE_MODE_MII,
39 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
40 .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
41 .flags = SMSC911X_USE_16BIT,
42};
43
44static struct platform_device gpmc_smsc911x_device = {
45 .name = "smsc911x",
46 .id = -1,
47 .num_resources = ARRAY_SIZE(gpmc_smsc911x_resources),
48 .resource = gpmc_smsc911x_resources,
49 .dev = {
50 .platform_data = &gpmc_smsc911x_config,
51 },
52};
53
54/*
55 * Initialize smsc911x device connected to the GPMC. Note that we
56 * assume that pin multiplexing is done in the board-*.c file,
57 * or in the bootloader.
58 */
59void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *board_data)
60{
61 unsigned long cs_mem_base;
62 int ret;
63
64 gpmc_cfg = board_data;
65
66 if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
67 printk(KERN_ERR "Failed to request GPMC mem for smsc911x\n");
68 return;
69 }
70
71 gpmc_smsc911x_resources[0].start = cs_mem_base + 0x0;
72 gpmc_smsc911x_resources[0].end = cs_mem_base + 0xff;
73
74 if (gpio_request(gpmc_cfg->gpio_irq, "smsc911x irq") < 0) {
75 printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n",
76 gpmc_cfg->gpio_irq);
77 goto free1;
78 }
79
80 gpio_direction_input(gpmc_cfg->gpio_irq);
81 gpmc_smsc911x_resources[1].start = gpio_to_irq(gpmc_cfg->gpio_irq);
Tim Nordellcdd280b92010-09-27 16:05:49 +0000[diff] [blame]82
83 if (gpio_is_valid(gpmc_cfg->gpio_reset)) {
84 ret = gpio_request(gpmc_cfg->gpio_reset, "smsc911x reset");
85 if (ret) {
86 printk(KERN_ERR "Failed to request GPIO%d for smsc911x reset\n",
87 gpmc_cfg->gpio_reset);
88 goto free2;
89 }
90
91 gpio_direction_output(gpmc_cfg->gpio_reset, 1);
92 gpio_set_value(gpmc_cfg->gpio_reset, 0);
93 msleep(100);
94 gpio_set_value(gpmc_cfg->gpio_reset, 1);
95 }
96
Mike Rapoportf0949f72011-04-16 22:29:29 +0000[diff] [blame^]97 if (gpmc_cfg->flags)
98 gpmc_smsc911x_config.flags = gpmc_cfg->flags;
99
Tim Nordellcdd280b92010-09-27 16:05:49 +0000[diff] [blame]100 if (platform_device_register(&gpmc_smsc911x_device) < 0) {
101 printk(KERN_ERR "Unable to register smsc911x device\n");
102 gpio_free(gpmc_cfg->gpio_reset);
103 goto free2;
104 }
105
106 return;
107
108free2:
109 gpio_free(gpmc_cfg->gpio_irq);
110free1:
111 gpmc_cs_free(gpmc_cfg->cs);
112
113 printk(KERN_ERR "Could not initialize smsc911x\n");
114}