| Tim Nordell | cdd280b | 2010-09-27 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 | |
| 26 | static struct omap_smsc911x_platform_data *gpmc_cfg; |
| 27 | |
| 28 | static struct resource gpmc_smsc911x_resources[] = { |
| 29 | [0] = { |
| 30 | .flags = IORESOURCE_MEM, |
| 31 | }, |
| 32 | [1] = { |
| 33 | .flags = IORESOURCE_IRQ, |
| 34 | }, |
| 35 | }; |
| 36 | |
| 37 | static 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 | |
| 44 | static 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 | */ |
| 59 | void __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); |
| 82 | gpmc_smsc911x_resources[1].flags |= |
| 83 | (gpmc_cfg->flags & IRQF_TRIGGER_MASK); |
| 84 | |
| 85 | if (gpio_is_valid(gpmc_cfg->gpio_reset)) { |
| 86 | ret = gpio_request(gpmc_cfg->gpio_reset, "smsc911x reset"); |
| 87 | if (ret) { |
| 88 | printk(KERN_ERR "Failed to request GPIO%d for smsc911x reset\n", |
| 89 | gpmc_cfg->gpio_reset); |
| 90 | goto free2; |
| 91 | } |
| 92 | |
| 93 | gpio_direction_output(gpmc_cfg->gpio_reset, 1); |
| 94 | gpio_set_value(gpmc_cfg->gpio_reset, 0); |
| 95 | msleep(100); |
| 96 | gpio_set_value(gpmc_cfg->gpio_reset, 1); |
| 97 | } |
| 98 | |
| 99 | if (platform_device_register(&gpmc_smsc911x_device) < 0) { |
| 100 | printk(KERN_ERR "Unable to register smsc911x device\n"); |
| 101 | gpio_free(gpmc_cfg->gpio_reset); |
| 102 | goto free2; |
| 103 | } |
| 104 | |
| 105 | return; |
| 106 | |
| 107 | free2: |
| 108 | gpio_free(gpmc_cfg->gpio_irq); |
| 109 | free1: |
| 110 | gpmc_cs_free(gpmc_cfg->cs); |
| 111 | |
| 112 | printk(KERN_ERR "Could not initialize smsc911x\n"); |
| 113 | } |