// SPDX-License-Identifier: GPL-2.0-or-later
/*
* linux/drivers/mmc/sdio.c
*
* Copyright 2006-2007 Pierre Ossman
*/
#include <linux/err.h>
#include <linux/pm_runtime.h>
#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include "core.h"
#include "card.h"
#include "host.h"
#include "bus.h"
#include "quirks.h"
#include "sd.h"
#include "sdio_bus.h"
#include "mmc_ops.h"
#include "sd_ops.h"
#include "sdio_ops.h"
#include "sdio_cis.h"
MMC_DEV_ATTR(vendor, "0x%04x\n", card->cis.vendor);
MMC_DEV_ATTR(device, "0x%04x\n", card->cis.device);
MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr);
MMC_DEV_ATTR(rca, "0x%04x\n", card->rca);
static struct attribute *sdio_std_attrs[] = {
&dev_attr_vendor.attr,
&dev_attr_device.attr,
&dev_attr_ocr.attr,
&dev_attr_rca.attr,
NULL,
};
ATTRIBUTE_GROUPS(sdio_std);
static struct device_type sdio_type = {
.groups = sdio_std_groups,
};
static int sdio_read_fbr(struct sdio_func *func)
{
int ret;
unsigned char data;
if (mmc_card_nonstd_func_interface(func->card)) {
func->class = SDIO_CLASS_NONE;
return 0;
}
ret = mmc_io_rw_direct(func->card, 0, 0,
SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF, 0, &data);
if (ret)
goto out;
data &= 0x0f;
if (data == 0x0f) {
ret = mmc_io_rw_direct(func->card, 0, 0,
SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF_EXT, 0, &data);
if (ret)
goto out;
}
func->class = data;
out:
return ret;
}
static int sdio_init_func(struct mmc_card *card, unsigned int fn)
{
int ret;
struct sdio_func *func;
if (WARN_ON(fn > SDIO_MAX_FUNCS))
return -EINVAL;
func = sdio_alloc_func(card);
if (IS_ERR(func))
return PTR_ERR(func);
func->num = fn;
if (!(card->quirks & MMC_QUIRK_NONSTD_SDIO)) {
ret = sdio_read_fbr(func);
if (ret)
goto fail;
ret = sdio_read_func_cis(func);
if (ret)
goto fail;
} else {
func->vendor = func->card->cis.vendor;
func->device = func->card->cis.device;
func->max_blksize = func->card->cis.blksize;
}
card->sdio_func[fn - 1] = func;
return 0;
fail:
/*
* It is okay to remove the function here even though we hold
* the host lock as we haven't registered the device yet.
