diff options
Diffstat (limited to 'drivers/mfd/tc6387xb.c')
| -rw-r--r-- | drivers/mfd/tc6387xb.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/drivers/mfd/tc6387xb.c b/drivers/mfd/tc6387xb.c new file mode 100644 index 000000000000..a22b21ac6cf8 --- /dev/null +++ b/drivers/mfd/tc6387xb.c @@ -0,0 +1,181 @@ +/* + * Toshiba TC6387XB support + * Copyright (c) 2005 Ian Molton + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This file contains TC6387XB base support. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/err.h> +#include <linux/mfd/core.h> +#include <linux/mfd/tmio.h> +#include <linux/mfd/tc6387xb.h> + +enum { + TC6387XB_CELL_MMC, +}; + +#ifdef CONFIG_PM +static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state) +{ + struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev); + + if (pdata && pdata->suspend) + pdata->suspend(dev); + + return 0; +} + +static int tc6387xb_resume(struct platform_device *dev) +{ + struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev); + + if (pdata && pdata->resume) + pdata->resume(dev); + + return 0; +} +#else +#define tc6387xb_suspend NULL +#define tc6387xb_resume NULL +#endif + +/*--------------------------------------------------------------------------*/ + +static int tc6387xb_mmc_enable(struct platform_device *mmc) +{ + struct platform_device *dev = to_platform_device(mmc->dev.parent); + struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data; + + if (tc6387xb->enable_clk32k) + tc6387xb->enable_clk32k(dev); + + return 0; +} + +static int tc6387xb_mmc_disable(struct platform_device *mmc) +{ + struct platform_device *dev = to_platform_device(mmc->dev.parent); + struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data; + + if (tc6387xb->disable_clk32k) + tc6387xb->disable_clk32k(dev); + + return 0; +} + +/*--------------------------------------------------------------------------*/ + +static struct resource tc6387xb_mmc_resources[] = { + { + .start = 0x800, + .end = 0x9ff, + .flags = IORESOURCE_MEM, + }, + { + .start = 0x200, + .end = 0x2ff, + .flags = IORESOURCE_MEM, + }, + { + .start = 0, + .end = 0, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct mfd_cell tc6387xb_cells[] = { + [TC6387XB_CELL_MMC] = { + .name = "tmio-mmc", + .enable = tc6387xb_mmc_enable, + .disable = tc6387xb_mmc_disable, + .num_resources = ARRAY_SIZE(tc6387xb_mmc_resources), + .resources = tc6387xb_mmc_resources, + }, +}; + +static int tc6387xb_probe(struct platform_device *dev) +{ + struct tc6387xb_platform_data *data = platform_get_drvdata(dev); + struct resource *iomem; + int irq, ret; + + iomem = platform_get_resource(dev, IORESOURCE_MEM, 0); + if (!iomem) { + ret = -EINVAL; + goto err_resource; + } + + ret = platform_get_irq(dev, 0); + if (ret >= 0) + irq = ret; + else + goto err_resource; + + if (data && data->enable) + data->enable(dev); + + printk(KERN_INFO "Toshiba tc6387xb initialised\n"); + + tc6387xb_cells[TC6387XB_CELL_MMC].platform_data = + &tc6387xb_cells[TC6387XB_CELL_MMC]; + tc6387xb_cells[TC6387XB_CELL_MMC].data_size = + sizeof(tc6387xb_cells[TC6387XB_CELL_MMC]); + + ret = mfd_add_devices(&dev->dev, dev->id, tc6387xb_cells, + ARRAY_SIZE(tc6387xb_cells), iomem, irq); + + if (!ret) + return 0; + +err_resource: + return ret; +} + +static int tc6387xb_remove(struct platform_device *dev) +{ + struct tc6387xb_platform_data *data = platform_get_drvdata(dev); + + if (data && data->disable) + data->disable(dev); + + /* FIXME - free the resources! */ + + return 0; +} + + +static struct platform_driver tc6387xb_platform_driver = { + .driver = { + .name = "tc6387xb", + }, + .probe = tc6387xb_probe, + .remove = tc6387xb_remove, + .suspend = tc6387xb_suspend, + .resume = tc6387xb_resume, +}; + + +static int __init tc6387xb_init(void) +{ + return platform_driver_register(&tc6387xb_platform_driver); +} + +static void __exit tc6387xb_exit(void) +{ + platform_driver_unregister(&tc6387xb_platform_driver); +} + +module_init(tc6387xb_init); +module_exit(tc6387xb_exit); + +MODULE_DESCRIPTION("Toshiba TC6387XB core driver"); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Ian Molton"); +MODULE_ALIAS("platform:tc6387xb"); |