| Ian Molton | cbdfb42 | 2008-07-15 15:12:52 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Toshiba TC6387XB support |
| 3 | * Copyright (c) 2005 Ian Molton |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This file contains TC6387XB base support. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/platform_device.h> |
| 15 | #include <linux/err.h> |
| 16 | #include <linux/mfd/core.h> |
| 17 | #include <linux/mfd/tmio.h> |
| 18 | #include <linux/mfd/tc6387xb.h> |
| 19 | |
| 20 | #ifdef CONFIG_PM |
| 21 | static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state) |
| 22 | { |
| 23 | struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev); |
| 24 | |
| 25 | if (pdata && pdata->suspend) |
| 26 | pdata->suspend(dev); |
| 27 | |
| 28 | return 0; |
| 29 | } |
| 30 | |
| 31 | static int tc6387xb_resume(struct platform_device *dev) |
| 32 | { |
| 33 | struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev); |
| 34 | |
| 35 | if (pdata && pdata->resume) |
| 36 | pdata->resume(dev); |
| 37 | |
| 38 | return 0; |
| 39 | } |
| 40 | #else |
| 41 | #define tc6387xb_suspend NULL |
| 42 | #define tc6387xb_resume NULL |
| 43 | #endif |
| 44 | |
| 45 | /*--------------------------------------------------------------------------*/ |
| 46 | |
| 47 | static int tc6387xb_mmc_enable(struct platform_device *mmc) |
| 48 | { |
| 49 | struct platform_device *dev = to_platform_device(mmc->dev.parent); |
| 50 | struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data; |
| 51 | |
| 52 | if (tc6387xb->enable_clk32k) |
| 53 | tc6387xb->enable_clk32k(dev); |
| 54 | |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | static int tc6387xb_mmc_disable(struct platform_device *mmc) |
| 59 | { |
| 60 | struct platform_device *dev = to_platform_device(mmc->dev.parent); |
| 61 | struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data; |
| 62 | |
| 63 | if (tc6387xb->disable_clk32k) |
| 64 | tc6387xb->disable_clk32k(dev); |
| 65 | |
| 66 | return 0; |
| 67 | } |
| 68 | |
| 69 | /*--------------------------------------------------------------------------*/ |
| 70 | |
| 71 | static struct resource tc6387xb_mmc_resources[] = { |
| 72 | { |
| 73 | .start = 0x800, |
| 74 | .end = 0x9ff, |
| 75 | .flags = IORESOURCE_MEM, |
| 76 | }, |
| 77 | { |
| 78 | .start = 0x200, |
| 79 | .end = 0x2ff, |
| 80 | .flags = IORESOURCE_MEM, |
| 81 | }, |
| 82 | { |
| 83 | .start = 0, |
| 84 | .end = 0, |
| 85 | .flags = IORESOURCE_IRQ, |
| 86 | }, |
| 87 | }; |
| 88 | |
| 89 | static struct mfd_cell tc6387xb_cells[] = { |
| 90 | { |
| 91 | .name = "tmio-mmc", |
| 92 | .enable = tc6387xb_mmc_enable, |
| 93 | .disable = tc6387xb_mmc_disable, |
| 94 | .num_resources = ARRAY_SIZE(tc6387xb_mmc_resources), |
| 95 | .resources = tc6387xb_mmc_resources, |
| 96 | }, |
| 97 | }; |
| 98 | |
| 99 | static int tc6387xb_probe(struct platform_device *dev) |
| 100 | { |
| 101 | struct tc6387xb_platform_data *data = platform_get_drvdata(dev); |
| 102 | struct resource *iomem; |
| 103 | int irq, ret; |
| 104 | |
| 105 | iomem = platform_get_resource(dev, IORESOURCE_MEM, 0); |
| 106 | if (!iomem) { |
| 107 | ret = -EINVAL; |
| 108 | goto err_resource; |
| 109 | } |
| 110 | |
| 111 | ret = platform_get_irq(dev, 0); |
| 112 | if (ret >= 0) |
| 113 | irq = ret; |
| 114 | else |
| 115 | goto err_resource; |
| 116 | |
| 117 | if (data && data->enable) |
| 118 | data->enable(dev); |
| 119 | |
| 120 | printk(KERN_INFO "Toshiba tc6387xb initialised\n"); |
| 121 | |
| 122 | ret = mfd_add_devices(dev, tc6387xb_cells, |
| 123 | ARRAY_SIZE(tc6387xb_cells), iomem, irq); |
| 124 | |
| 125 | if (!ret) |
| 126 | return 0; |
| 127 | |
| 128 | err_resource: |
| 129 | return ret; |
| 130 | } |
| 131 | |
| 132 | static int tc6387xb_remove(struct platform_device *dev) |
| 133 | { |
| 134 | struct tc6387xb_platform_data *data = platform_get_drvdata(dev); |
| 135 | |
| 136 | if (data && data->disable) |
| 137 | data->disable(dev); |
| 138 | |
| 139 | /* FIXME - free the resources! */ |
| 140 | |
| 141 | return 0; |
| 142 | } |
| 143 | |
| 144 | |
| 145 | static struct platform_driver tc6387xb_platform_driver = { |
| 146 | .driver = { |
| 147 | .name = "tc6387xb", |
| 148 | }, |
| 149 | .probe = tc6387xb_probe, |
| 150 | .remove = tc6387xb_remove, |
| 151 | .suspend = tc6387xb_suspend, |
| 152 | .resume = tc6387xb_resume, |
| 153 | }; |
| 154 | |
| 155 | |
| 156 | static int __init tc6387xb_init(void) |
| 157 | { |
| 158 | return platform_driver_register(&tc6387xb_platform_driver); |
| 159 | } |
| 160 | |
| 161 | static void __exit tc6387xb_exit(void) |
| 162 | { |
| 163 | platform_driver_unregister(&tc6387xb_platform_driver); |
| 164 | } |
| 165 | |
| 166 | module_init(tc6387xb_init); |
| 167 | module_exit(tc6387xb_exit); |
| 168 | |
| 169 | MODULE_DESCRIPTION("Toshiba TC6387XB core driver"); |
| 170 | MODULE_LICENSE("GPL v2"); |
| 171 | MODULE_AUTHOR("Ian Molton"); |
| 172 | MODULE_ALIAS("platform:tc6387xb"); |