Commit 3ec410d7 authored by Bob Copeland's avatar Bob Copeland Committed by John W. Linville
Browse files

wl1251: add sdio support



This adds the wl1251_sdio module, enabling the SDIO interface for
wl1251, as used by the Google G1 phone and others.
Signed-off-by: default avatarBob Copeland <me@bobcopeland.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent af8c78eb
......@@ -28,6 +28,17 @@ config WL1251_SPI
If you choose to build a module, it'll be called wl1251_spi.
Say N if unsure.
config WL1251_SDIO
tristate "TI wl1251 SDIO support"
depends on WL1251 && MMC
---help---
This module adds support for the SDIO interface of adapters using
TI wl1251 chipset. Select this if your platform is using
the SDIO bus.
If you choose to build a module, it'll be called
wl1251_sdio. Say N if unsure.
config WL1271
tristate "TI wl1271 support"
depends on WL12XX && SPI_MASTER && GENERIC_HARDIRQS
......
......@@ -5,6 +5,7 @@ wl1251-objs = wl1251_main.o wl1251_event.o \
obj-$(CONFIG_WL1251) += wl1251.o
obj-$(CONFIG_WL1251_SPI) += wl1251_spi.o
obj-$(CONFIG_WL1251_SDIO) += wl1251_sdio.o
wl1271-objs = wl1271_main.o wl1271_spi.o wl1271_cmd.o \
wl1271_event.o wl1271_tx.o wl1271_rx.o \
......
/*
* wl12xx SDIO routines
*
* 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 program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Copyright (C) 2005 Texas Instruments Incorporated
* Copyright (C) 2008 Google Inc
* Copyright (C) 2009 Bob Copeland (me@bobcopeland.com)
*/
#include <linux/module.h>
#include <linux/crc7.h>
#include <linux/mod_devicetable.h>
#include <linux/irq.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/platform_device.h>
#include "wl1251.h"
#include "wl12xx_80211.h"
#include "reg.h"
#include "wl1251_ps.h"
#include "wl1251_io.h"
#include "wl1251_tx.h"
#include "wl1251_debugfs.h"
#ifndef SDIO_VENDOR_ID_TI
#define SDIO_VENDOR_ID_TI 0x104c
#endif
#ifndef SDIO_DEVICE_ID_TI_WL1251
#define SDIO_DEVICE_ID_TI_WL1251 0x9066
#endif
static struct sdio_func *wl_to_func(struct wl1251 *wl)
{
return wl->if_priv;
}
static void wl1251_sdio_interrupt(struct sdio_func *func)
{
wl1251_irq(0, sdio_get_drvdata(func));
}
static const struct sdio_device_id wl1251_devices[] = {
{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1251) },
{}
};
MODULE_DEVICE_TABLE(sdio, wl1251_devices);
void wl1251_sdio_read(struct wl1251 *wl, int addr, void *buf, size_t len)
{
int ret;
struct sdio_func *func = wl_to_func(wl);
sdio_claim_host(func);
ret = sdio_memcpy_fromio(func, buf, addr, len);
if (ret)
wl1251_error("sdio read failed (%d)", ret);
sdio_release_host(func);
}
void wl1251_sdio_write(struct wl1251 *wl, int addr, void *buf, size_t len)
{
int ret;
struct sdio_func *func = wl_to_func(wl);
sdio_claim_host(func);
ret = sdio_memcpy_toio(func, addr, buf, len);
if (ret)
wl1251_error("sdio write failed (%d)", ret);
sdio_release_host(func);
}
void wl1251_sdio_reset(struct wl1251 *wl)
{
}
void wl1251_sdio_set_power(bool enable)
{
}
struct wl1251_if_operations wl1251_sdio_ops = {
.read = wl1251_sdio_read,
.write = wl1251_sdio_write,
.reset = wl1251_sdio_reset,
};
int wl1251_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
{
int ret;
struct wl1251 *wl;
struct ieee80211_hw *hw;
hw = wl1251_alloc_hw();
if (IS_ERR(hw))
return PTR_ERR(hw);
wl = hw->priv;
sdio_claim_host(func);
ret = sdio_enable_func(func);
if (ret)
goto release;
sdio_set_block_size(func, 512);
SET_IEEE80211_DEV(hw, &func->dev);
wl->if_priv = func;
wl->if_ops = &wl1251_sdio_ops;
wl->set_power = wl1251_sdio_set_power;
sdio_release_host(func);
ret = wl1251_init_ieee80211(wl);
sdio_claim_host(func);
if (ret)
goto disable;
ret = sdio_claim_irq(func, wl1251_sdio_interrupt);
if (ret)
goto no_irq;
sdio_release_host(func);
sdio_set_drvdata(func, wl);
return ret;
no_irq:
wl1251_free_hw(wl);
disable:
sdio_disable_func(func);
release:
sdio_release_host(func);
return ret;
}
static void __devexit wl1251_sdio_remove(struct sdio_func *func)
{
struct wl1251 *wl = sdio_get_drvdata(func);
wl1251_free_hw(wl);
sdio_claim_host(func);
sdio_release_irq(func);
sdio_disable_func(func);
sdio_release_host(func);
}
static struct sdio_driver wl1251_sdio_driver = {
.name = "wl1251_sdio",
.id_table = wl1251_devices,
.probe = wl1251_sdio_probe,
.remove = __devexit_p(wl1251_sdio_remove),
};
static int __init wl1251_sdio_init(void)
{
int err;
err = sdio_register_driver(&wl1251_sdio_driver);
if (err)
wl1251_error("failed to register sdio driver: %d", err);
return err;
}
static void __exit wl1251_sdio_exit(void)
{
sdio_unregister_driver(&wl1251_sdio_driver);
wl1251_notice("unloaded");
}
module_init(wl1251_sdio_init);
module_exit(wl1251_sdio_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Kalle Valo <Kalle.Valo@nokia.com>");
MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
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