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// SPDX-License-Identifier: GPL-2.0-only
/*
*
* Copyright (C) 2012 John Crispin <john@phrozen.org>
*/
#include <linux/err.h>
#include <linux/export.h>
#include <linux/gpio/consumer.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.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)
struct gpio_desc *gpio;
int gpio_count;
dma_addr_t dma;
int error;
cp1_base =
(void *) CPHYSADDR(dma_alloc_coherent(&pdev->dev, CP1_SIZE,
&dma, GFP_KERNEL));
gpio_count = gpiod_count(&pdev->dev, NULL);
while (gpio_count > 0) {
gpio = devm_gpiod_get_index(&pdev->dev,
NULL, --gpio_count, GPIOD_OUT_HIGH);
error = PTR_ERR_OR_ZERO(gpio);
if (error) {
dev_err(&pdev->dev,
"failed to request GPIO idx %d: %d\n",
gpio_count, error);
continue;
}
gpiod_set_consumer_name(gpio, "vmmc-relay");
}
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" },
{},
};
static struct platform_driver vmmc_driver = {
.probe = vmmc_probe,
.driver = {
.name = "lantiq,vmmc",
.of_match_table = vmmc_match,
},
};
builtin_platform_driver(vmmc_driver);
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