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gerrit-public.fairphone.software / kernel / msm-4.9 / 17fae1cdea2fd131984facfb24923a3eb78c63d0 / . / arch / arm / mach-omap2 / gpmc-smsc911x.c
blob: b6c77be3e8f762a144fd993553d88aa4ebe7f101 [file] [log] [blame]
Tim Nordellcdd280b2010-09-27 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 */
Igor Grinberg11383a92011-04-26 16:25:56 +0000[diff] [blame]13#define pr_fmt(fmt) "%s: " fmt, __func__
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]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
23#include <plat/board.h>
24#include <plat/gpmc.h>
25#include <plat/gpmc-smsc911x.h>
26
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]27static struct resource gpmc_smsc911x_resources[] = {
28 [0] = {
29 .flags = IORESOURCE_MEM,
30 },
31 [1] = {
Mike Rapoportf0949f72011-04-16 22:29:29 +0000[diff] [blame]32 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]33 },
34};
35
36static struct smsc911x_platform_config gpmc_smsc911x_config = {
37 .phy_interface = PHY_INTERFACE_MODE_MII,
38 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
39 .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]40};
41
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]42/*
43 * Initialize smsc911x device connected to the GPMC. Note that we
44 * assume that pin multiplexing is done in the board-*.c file,
45 * or in the bootloader.
46 */
Russ Dill54da0782012-03-23 02:21:33 -0700[diff] [blame]47void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *gpmc_cfg)
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]48{
Mike Rapoport21b42732011-04-16 22:29:30 +0000[diff] [blame]49 struct platform_device *pdev;
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]50 unsigned long cs_mem_base;
51 int ret;
52
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]53 if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
Igor Grinberg11383a92011-04-26 16:25:56 +0000[diff] [blame]54 pr_err("Failed to request GPMC mem region\n");
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]55 return;
56 }
57
58 gpmc_smsc911x_resources[0].start = cs_mem_base + 0x0;
59 gpmc_smsc911x_resources[0].end = cs_mem_base + 0xff;
60
Igor Grinbergbc593f52011-05-03 18:22:09 +0300[diff] [blame]61 if (gpio_request_one(gpmc_cfg->gpio_irq, GPIOF_IN, "smsc911x irq")) {
Igor Grinberg11383a92011-04-26 16:25:56 +0000[diff] [blame]62 pr_err("Failed to request IRQ GPIO%d\n", gpmc_cfg->gpio_irq);
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]63 goto free1;
64 }
65
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]66 gpmc_smsc911x_resources[1].start = gpio_to_irq(gpmc_cfg->gpio_irq);
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]67
68 if (gpio_is_valid(gpmc_cfg->gpio_reset)) {
Igor Grinbergbc593f52011-05-03 18:22:09 +0300[diff] [blame]69 ret = gpio_request_one(gpmc_cfg->gpio_reset,
70 GPIOF_OUT_INIT_HIGH, "smsc911x reset");
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]71 if (ret) {
Igor Grinberg11383a92011-04-26 16:25:56 +0000[diff] [blame]72 pr_err("Failed to request reset GPIO%d\n",
73 gpmc_cfg->gpio_reset);
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]74 goto free2;
75 }
76
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]77 gpio_set_value(gpmc_cfg->gpio_reset, 0);
78 msleep(100);
79 gpio_set_value(gpmc_cfg->gpio_reset, 1);
80 }
81
Russ Dilla0dbf2a2012-03-23 02:21:34 -0700[diff] [blame]82 gpmc_smsc911x_config.flags = gpmc_cfg->flags ? : SMSC911X_USE_16BIT;
Mike Rapoportf0949f72011-04-16 22:29:29 +0000[diff] [blame]83
Mike Rapoport21b42732011-04-16 22:29:30 +0000[diff] [blame]84 pdev = platform_device_register_resndata(NULL, "smsc911x", gpmc_cfg->id,
85 gpmc_smsc911x_resources, ARRAY_SIZE(gpmc_smsc911x_resources),
86 &gpmc_smsc911x_config, sizeof(gpmc_smsc911x_config));
87 if (!pdev) {
Igor Grinberg11383a92011-04-26 16:25:56 +0000[diff] [blame]88 pr_err("Unable to register platform device\n");
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]89 gpio_free(gpmc_cfg->gpio_reset);
90 goto free2;
91 }
92
93 return;
94
95free2:
96 gpio_free(gpmc_cfg->gpio_irq);
97free1:
98 gpmc_cs_free(gpmc_cfg->cs);
99
Igor Grinberg11383a92011-04-26 16:25:56 +0000[diff] [blame]100 pr_err("Could not initialize smsc911x device\n");
Tim Nordellcdd280b2010-09-27 16:05:49 +0000[diff] [blame]101}