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wl1251: register platform_device to pass board data

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wl1251 is embedded chip that can be connected using SDIO bus, and is not
an actual SDIO card. For this reason there is a need to pass some board
specific data, like 'EEPROM is attached' flag or power control callback.

However currently there is no way to pass this data through SDIO subsystem,
so this patch registers dummy platform_device to allow that, until we
have a better solution to this.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Grazvydas Ignotas 2010-04-15 18:23:23 +03:00 committed by John W. Linville
parent 103823db62
commit 8c00b39f33
1 changed files with 40 additions and 0 deletions
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40
drivers/net/wireless/wl12xx/wl1251_sdio.c
View File

@ -23,6 +23,8 @@
#include <linux/mod_devicetable.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/platform_device.h>
#include <linux/spi/wl12xx.h>
#include "wl1251.h"
@ -34,6 +36,8 @@
#define SDIO_DEVICE_ID_TI_WL1251 0x9066
#endif
static struct wl12xx_platform_data *wl12xx_board_data;
static struct sdio_func *wl_to_func(struct wl1251 *wl)
{
return wl->if_priv;
@ -144,6 +148,30 @@ static const struct wl1251_if_operations wl1251_sdio_ops = {
.disable_irq = wl1251_sdio_disable_irq,
};
static int wl1251_platform_probe(struct platform_device *pdev)
{
if (pdev->id != -1) {
wl1251_error("can only handle single device");
return -ENODEV;
}
wl12xx_board_data = pdev->dev.platform_data;
return 0;
}
/*
* Dummy platform_driver for passing platform_data to this driver,
* until we have a way to pass this through SDIO subsystem or
* some other way.
*/
static struct platform_driver wl1251_platform_driver = {
.driver = {
.name = "wl1251_data",
.owner = THIS_MODULE,
},
.probe = wl1251_platform_probe,
};
static int wl1251_sdio_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
@ -169,6 +197,11 @@ static int wl1251_sdio_probe(struct sdio_func *func,
wl->if_ops = &wl1251_sdio_ops;
wl->set_power = wl1251_sdio_set_power;
if (wl12xx_board_data != NULL) {
wl->set_power = wl12xx_board_data->set_power;
wl->use_eeprom = wl12xx_board_data->use_eeprom;
}
sdio_release_host(func);
ret = wl1251_init_ieee80211(wl);
if (ret)
@ -208,6 +241,12 @@ static int __init wl1251_sdio_init(void)
{
int err;
err = platform_driver_register(&wl1251_platform_driver);
if (err) {
wl1251_error("failed to register platform driver: %d", err);
return err;
}
err = sdio_register_driver(&wl1251_sdio_driver);
if (err)
wl1251_error("failed to register sdio driver: %d", err);
@ -217,6 +256,7 @@ static int __init wl1251_sdio_init(void)
static void __exit wl1251_sdio_exit(void)
{
sdio_unregister_driver(&wl1251_sdio_driver);
platform_driver_unregister(&wl1251_platform_driver);
wl1251_notice("unloaded");
}