mirror of
https://github.com/torvalds/linux.git
synced 2024-12-22 10:56:40 +00:00
93f56be146
Changed driver to keep MMC host claimed while wlan interface is up. This keeps MMC stack from powering the SDIO device down. Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com> Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
298 lines
6.4 KiB
C
298 lines
6.4 KiB
C
/*
|
|
* This file is part of wl1271
|
|
*
|
|
* Copyright (C) 2009-2010 Nokia Corporation
|
|
*
|
|
* Contact: Luciano Coelho <luciano.coelho@nokia.com>
|
|
*
|
|
* 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
|
|
*
|
|
*/
|
|
|
|
#include <linux/irq.h>
|
|
#include <linux/module.h>
|
|
#include <linux/crc7.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/mmc/sdio_func.h>
|
|
#include <linux/mmc/sdio_ids.h>
|
|
#include <linux/mmc/card.h>
|
|
#include <plat/gpio.h>
|
|
|
|
#include "wl1271.h"
|
|
#include "wl12xx_80211.h"
|
|
#include "wl1271_io.h"
|
|
|
|
|
|
#define RX71_WL1271_IRQ_GPIO 42
|
|
|
|
#ifndef SDIO_VENDOR_ID_TI
|
|
#define SDIO_VENDOR_ID_TI 0x0097
|
|
#endif
|
|
|
|
#ifndef SDIO_DEVICE_ID_TI_WL1271
|
|
#define SDIO_DEVICE_ID_TI_WL1271 0x4076
|
|
#endif
|
|
|
|
static const struct sdio_device_id wl1271_devices[] = {
|
|
{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(sdio, wl1271_devices);
|
|
|
|
static inline struct sdio_func *wl_to_func(struct wl1271 *wl)
|
|
{
|
|
return wl->if_priv;
|
|
}
|
|
|
|
static struct device *wl1271_sdio_wl_to_dev(struct wl1271 *wl)
|
|
{
|
|
return &(wl_to_func(wl)->dev);
|
|
}
|
|
|
|
static irqreturn_t wl1271_irq(int irq, void *cookie)
|
|
{
|
|
struct wl1271 *wl = cookie;
|
|
unsigned long flags;
|
|
|
|
wl1271_debug(DEBUG_IRQ, "IRQ");
|
|
|
|
/* complete the ELP completion */
|
|
spin_lock_irqsave(&wl->wl_lock, flags);
|
|
if (wl->elp_compl) {
|
|
complete(wl->elp_compl);
|
|
wl->elp_compl = NULL;
|
|
}
|
|
|
|
if (!test_and_set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags))
|
|
ieee80211_queue_work(wl->hw, &wl->irq_work);
|
|
set_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
|
|
spin_unlock_irqrestore(&wl->wl_lock, flags);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
|
|
{
|
|
disable_irq(wl->irq);
|
|
}
|
|
|
|
static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
|
|
{
|
|
enable_irq(wl->irq);
|
|
}
|
|
|
|
static void wl1271_sdio_reset(struct wl1271 *wl)
|
|
{
|
|
}
|
|
|
|
static void wl1271_sdio_init(struct wl1271 *wl)
|
|
{
|
|
}
|
|
|
|
static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
|
|
size_t len, bool fixed)
|
|
{
|
|
int ret;
|
|
struct sdio_func *func = wl_to_func(wl);
|
|
|
|
if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
|
|
((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
|
|
wl1271_debug(DEBUG_SPI, "sdio read 52 addr 0x%x, byte 0x%02x",
|
|
addr, ((u8 *)buf)[0]);
|
|
} else {
|
|
if (fixed)
|
|
ret = sdio_readsb(func, buf, addr, len);
|
|
else
|
|
ret = sdio_memcpy_fromio(func, buf, addr, len);
|
|
|
|
wl1271_debug(DEBUG_SPI, "sdio read 53 addr 0x%x, %d bytes",
|
|
addr, len);
|
|
wl1271_dump_ascii(DEBUG_SPI, "data: ", buf, len);
|
|
}
|
|
|
|
if (ret)
|
|
wl1271_error("sdio read failed (%d)", ret);
|
|
|
|
}
|
|
|
|
static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
|
|
size_t len, bool fixed)
|
|
{
|
|
int ret;
|
|
struct sdio_func *func = wl_to_func(wl);
|
|
|
|
if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
|
|
sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
|
|
wl1271_debug(DEBUG_SPI, "sdio write 52 addr 0x%x, byte 0x%02x",
|
|
addr, ((u8 *)buf)[0]);
|
|
} else {
|
|
wl1271_debug(DEBUG_SPI, "sdio write 53 addr 0x%x, %d bytes",
|
|
addr, len);
|
|
wl1271_dump_ascii(DEBUG_SPI, "data: ", buf, len);
|
|
|
|
if (fixed)
|
|
ret = sdio_writesb(func, addr, buf, len);
|
|
else
|
|
ret = sdio_memcpy_toio(func, addr, buf, len);
|
|
}
|
|
if (ret)
|
|
wl1271_error("sdio write failed (%d)", ret);
|
|
|
|
}
|
|
|
|
static void wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
|
|
{
|
|
struct sdio_func *func = wl_to_func(wl);
|
|
|
|
if (enable) {
|
|
sdio_claim_host(func);
|
|
sdio_enable_func(func);
|
|
} else {
|
|
sdio_disable_func(func);
|
|
sdio_release_host(func);
|
|
}
|
|
}
|
|
|
|
static struct wl1271_if_operations sdio_ops = {
|
|
.read = wl1271_sdio_raw_read,
|
|
.write = wl1271_sdio_raw_write,
|
|
.reset = wl1271_sdio_reset,
|
|
.init = wl1271_sdio_init,
|
|
.power = wl1271_sdio_set_power,
|
|
.dev = wl1271_sdio_wl_to_dev,
|
|
.enable_irq = wl1271_sdio_enable_interrupts,
|
|
.disable_irq = wl1271_sdio_disable_interrupts
|
|
};
|
|
|
|
static int __devinit wl1271_probe(struct sdio_func *func,
|
|
const struct sdio_device_id *id)
|
|
{
|
|
struct ieee80211_hw *hw;
|
|
struct wl1271 *wl;
|
|
int ret;
|
|
|
|
/* We are only able to handle the wlan function */
|
|
if (func->num != 0x02)
|
|
return -ENODEV;
|
|
|
|
hw = wl1271_alloc_hw();
|
|
if (IS_ERR(hw))
|
|
return PTR_ERR(hw);
|
|
|
|
wl = hw->priv;
|
|
|
|
wl->if_priv = func;
|
|
wl->if_ops = &sdio_ops;
|
|
|
|
/* Grab access to FN0 for ELP reg. */
|
|
func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
|
|
|
|
wl->irq = gpio_to_irq(RX71_WL1271_IRQ_GPIO);
|
|
if (wl->irq < 0) {
|
|
ret = wl->irq;
|
|
wl1271_error("could not get irq!");
|
|
goto out_free;
|
|
}
|
|
|
|
ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
|
|
if (ret < 0) {
|
|
wl1271_error("request_irq() failed: %d", ret);
|
|
goto out_free;
|
|
}
|
|
|
|
set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
|
|
|
|
disable_irq(wl->irq);
|
|
|
|
ret = wl1271_init_ieee80211(wl);
|
|
if (ret)
|
|
goto out_irq;
|
|
|
|
ret = wl1271_register_hw(wl);
|
|
if (ret)
|
|
goto out_irq;
|
|
|
|
sdio_set_drvdata(func, wl);
|
|
|
|
wl1271_notice("initialized");
|
|
|
|
return 0;
|
|
|
|
out_irq:
|
|
free_irq(wl->irq, wl);
|
|
|
|
|
|
out_free:
|
|
ieee80211_free_hw(hw);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __devexit wl1271_remove(struct sdio_func *func)
|
|
{
|
|
struct wl1271 *wl = sdio_get_drvdata(func);
|
|
|
|
ieee80211_unregister_hw(wl->hw);
|
|
|
|
free_irq(wl->irq, wl);
|
|
|
|
kfree(wl->target_mem_map);
|
|
vfree(wl->fw);
|
|
wl->fw = NULL;
|
|
kfree(wl->nvs);
|
|
wl->nvs = NULL;
|
|
|
|
kfree(wl->fw_status);
|
|
kfree(wl->tx_res_if);
|
|
|
|
ieee80211_free_hw(wl->hw);
|
|
}
|
|
|
|
static struct sdio_driver wl1271_sdio_driver = {
|
|
.name = "wl1271",
|
|
.id_table = wl1271_devices,
|
|
.probe = wl1271_probe,
|
|
.remove = __devexit_p(wl1271_remove),
|
|
};
|
|
|
|
static int __init wl1271_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = sdio_register_driver(&wl1271_sdio_driver);
|
|
if (ret < 0) {
|
|
wl1271_error("failed to register sdio driver: %d", ret);
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit wl1271_exit(void)
|
|
{
|
|
sdio_unregister_driver(&wl1271_sdio_driver);
|
|
|
|
wl1271_notice("unloaded");
|
|
}
|
|
|
|
module_init(wl1271_init);
|
|
module_exit(wl1271_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
|
|
MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
|
|
MODULE_FIRMWARE(WL1271_FW_NAME);
|