MIPS: lantiq: handle vmmc memory reservation

obj-y := prom.o sysctrl.o clk.o reset.o dma.o gptu.o dcdc.o

obj-y += vmmc.o

obj-$(CONFIG_XRX200_PHY_FW) += xrx200_phy_fw.o

/*

 *  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.

 *

 *  Copyright (C) 2012 John Crispin <blogic@openwrt.org>

 */

#include <linux/module.h>

#include <linux/of_platform.h>

#include <linux/of_gpio.h>

#include <linux/dma-mapping.h>

#include <lantiq_soc.h>

static unsigned int *cp1_base;

unsigned int *ltq_get_cp1_base(void)

{

	if (!cp1_base)

		panic("no cp1 base was set\n");

	return cp1_base;

}

EXPORT_SYMBOL(ltq_get_cp1_base);

static int vmmc_probe(struct platform_device *pdev)

{

#define CP1_SIZE       (1 << 20)

	int gpio_count;

	dma_addr_t dma;

	cp1_base =

		(void *) CPHYSADDR(dma_alloc_coherent(NULL, CP1_SIZE,

						    &dma, GFP_ATOMIC));

	gpio_count = of_gpio_count(pdev->dev.of_node);

	while (gpio_count > 0) {

		enum of_gpio_flags flags;

		int gpio = of_get_gpio_flags(pdev->dev.of_node,

					     --gpio_count, &flags);

		if (gpio_request(gpio, "vmmc-relay"))

			continue;

		dev_info(&pdev->dev, "requested GPIO %d\n", gpio);

		gpio_direction_output(gpio,

				      (flags & OF_GPIO_ACTIVE_LOW) ? (0) : (1));

	}

	dev_info(&pdev->dev, "reserved %dMB at 0x%p", CP1_SIZE >> 20, cp1_base);

	return 0;

}

static const struct of_device_id vmmc_match[] = {

	{ .compatible = "lantiq,vmmc-xway" },

	{},

};

MODULE_DEVICE_TABLE(of, vmmc_match);

static struct platform_driver vmmc_driver = {

	.probe = vmmc_probe,

	.driver = {

		.name = "lantiq,vmmc",

		.owner = THIS_MODULE,

		.of_match_table = vmmc_match,

	},

};

module_platform_driver(vmmc_driver);