projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| cbdfb426 IM |
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"); |