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/*
* BCMSDH Function Driver for the native SDIO/MMC driver in the Linux Kernel
*
* Copyright (C) 1999-2014, Broadcom Corporation
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
*
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
* you also meet, for each linked independent module, the terms and conditions of
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
*
* $Id: bcmsdh_sdmmc_linux.c 434777 2013-11-07 09:30:27Z $
*/
#include <typedefs.h>
#include <bcmutils.h>
#include <sdio.h> /* SDIO Device and Protocol Specs */
#include <bcmsdbus.h> /* bcmsdh to/from specific controller APIs */
#include <sdiovar.h> /* to get msglevel bit values */
#include <linux/sched.h> /* request_irq() */
#include <linux/mmc/core.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <dhd_linux.h>
#include <bcmsdh_sdmmc.h>
#include <dhd_dbg.h>
#if !defined(SDIO_VENDOR_ID_BROADCOM)
#define SDIO_VENDOR_ID_BROADCOM 0x02d0
#endif /* !defined(SDIO_VENDOR_ID_BROADCOM) */
#define SDIO_DEVICE_ID_BROADCOM_DEFAULT 0x0000
#if !defined(SDIO_DEVICE_ID_BROADCOM_4325_SDGWB)
#define SDIO_DEVICE_ID_BROADCOM_4325_SDGWB 0x0492 /* BCM94325SDGWB */
#endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4325_SDGWB) */
#if !defined(SDIO_DEVICE_ID_BROADCOM_4325)
#define SDIO_DEVICE_ID_BROADCOM_4325 0x0493
#endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4325) */
#if !defined(SDIO_DEVICE_ID_BROADCOM_4329)
#define SDIO_DEVICE_ID_BROADCOM_4329 0x4329
#endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4329) */
#if !defined(SDIO_DEVICE_ID_BROADCOM_4319)
#define SDIO_DEVICE_ID_BROADCOM_4319 0x4319
#endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4319) */
#if !defined(SDIO_DEVICE_ID_BROADCOM_4330)
#define SDIO_DEVICE_ID_BROADCOM_4330 0x4330
#endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4330) */
#if !defined(SDIO_DEVICE_ID_BROADCOM_4334)
#define SDIO_DEVICE_ID_BROADCOM_4334 0x4334
#endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4334) */
#if !defined(SDIO_DEVICE_ID_BROADCOM_4324)
#define SDIO_DEVICE_ID_BROADCOM_4324 0x4324
#endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4324) */
#if !defined(SDIO_DEVICE_ID_BROADCOM_43239)
#define SDIO_DEVICE_ID_BROADCOM_43239 43239
#endif /* !defined(SDIO_DEVICE_ID_BROADCOM_43239) */
extern void wl_cfg80211_set_parent_dev(void *dev);
extern void sdioh_sdmmc_devintr_off(sdioh_info_t *sd);
extern void sdioh_sdmmc_devintr_on(sdioh_info_t *sd);
extern void* bcmsdh_probe(osl_t *osh, void *dev, void *sdioh, void *adapter_info, uint bus_type,
uint bus_num, uint slot_num);
extern int bcmsdh_remove(bcmsdh_info_t *bcmsdh);
int sdio_function_init(void);
void sdio_function_cleanup(void);
#define DESCRIPTION "bcmsdh_sdmmc Driver"
#define AUTHOR "Broadcom Corporation"
/* module param defaults */
static int clockoverride = 0;
module_param(clockoverride, int, 0644);
MODULE_PARM_DESC(clockoverride, "SDIO card clock override");
/* Maximum number of bcmsdh_sdmmc devices supported by driver */
#define BCMSDH_SDMMC_MAX_DEVICES 1
extern volatile bool dhd_mmc_suspend;
static int sdioh_probe(struct sdio_func *func)
{
int host_idx = func->card->host->index;
uint32 rca = func->card->rca;
wifi_adapter_info_t *adapter;
osl_t *osh = NULL;
sdioh_info_t *sdioh = NULL;
sd_info(("bus num (host idx)=%d, slot num (rca)=%d\n", host_idx, rca));
adapter = dhd_wifi_platform_get_adapter(SDIO_BUS, host_idx, rca);
if (adapter != NULL)
sd_info(("found adapter info '%s'\n", adapter->name));
else
sd_err(("can't find adapter info for this chip\n"));
#ifdef WL_CFG80211
wl_cfg80211_set_parent_dev(&func->dev);
#endif
/* allocate SDIO Host Controller state info */
osh = osl_attach(&func->dev, SDIO_BUS, TRUE);
if (osh == NULL) {
sd_err(("%s: osl_attach failed\n", __FUNCTION__));
goto fail;
}
osl_static_mem_init(osh, adapter);
sdioh = sdioh_attach(osh, func);
if (sdioh == NULL) {
sd_err(("%s: sdioh_attach failed\n", __FUNCTION__));
goto fail;
}
sdioh->bcmsdh = bcmsdh_probe(osh, &func->dev, sdioh, adapter, SDIO_BUS, host_idx, rca);
if (sdioh->bcmsdh == NULL) {
sd_err(("%s: bcmsdh_probe failed\n", __FUNCTION__));
goto fail;
}
sdio_set_drvdata(func, sdioh);
return 0;
fail:
if (sdioh != NULL)
sdioh_detach(osh, sdioh);
if (osh != NULL)
osl_detach(osh);
return -ENOMEM;
}
static void sdioh_remove(struct sdio_func *func)
{
sdioh_info_t *sdioh;
osl_t *osh;
sdioh = sdio_get_drvdata(func);
if (sdioh == NULL) {
sd_err(("%s: error, no sdioh handler found\n", __FUNCTION__));
return;
}
osh = sdioh->osh;
bcmsdh_remove(sdioh->bcmsdh);
sdioh_detach(osh, sdioh);
osl_detach(osh);
}
static int bcmsdh_sdmmc_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
int ret = 0;
if (func == NULL)
return -EINVAL;
sd_trace(("bcmsdh_sdmmc: %s Enter\n", __FUNCTION__));
sd_info(("sdio_bcmsdh: func->class=%x\n", func->class));
sd_info(("sdio_vendor: 0x%04x\n", func->vendor));
sd_info(("sdio_device: 0x%04x\n", func->device));
sd_info(("Function#: 0x%04x\n", func->num));
/* 4318 doesn't have function 2 */
if ((func->num == 2) || (func->num == 1 && func->device == 0x4))
ret = sdioh_probe(func);
return ret;
}
static void bcmsdh_sdmmc_remove(struct sdio_func *func)
{
if (func == NULL) {
sd_err(("%s is called with NULL SDIO function pointer\n", __FUNCTION__));
return;
}
sd_trace(("bcmsdh_sdmmc: %s Enter\n", __FUNCTION__));
sd_info(("sdio_bcmsdh: func->class=%x\n", func->class));
sd_info(("sdio_vendor: 0x%04x\n", func->vendor));
sd_info(("sdio_device: 0x%04x\n", func->device));
sd_info(("Function#: 0x%04x\n", func->num));
if ((func->num == 2) || (func->num == 1 && func->device == 0x4))
sdioh_remove(func);
}
/* devices we support, null terminated */
static const struct sdio_device_id bcmsdh_sdmmc_ids[] = {
{ .class = SDIO_CLASS_NONE,
.vendor = SDIO_VENDOR_ID_BROADCOM,
.device = SDIO_ANY_ID
},
{ /* end: all zeroes */ },
};
MODULE_DEVICE_TABLE(sdio, bcmsdh_sdmmc_ids);
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 39)) && defined(CONFIG_PM)
static int bcmsdh_sdmmc_suspend(struct device *pdev)
{
int err;
sdioh_info_t *sdioh;
struct sdio_func *func = dev_to_sdio_func(pdev);
mmc_pm_flag_t sdio_flags;
sd_trace(("%s Enter\n", __FUNCTION__));
if (func->num != 2)
return 0;
sdioh = sdio_get_drvdata(func);
err = bcmsdh_suspend(sdioh->bcmsdh);
if (err)
return err;
sdio_flags = sdio_get_host_pm_caps(func);
if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
sd_err(("%s: can't keep power while host is suspended\n", __FUNCTION__));
return -EINVAL;
}
/* keep power while host suspended */
err = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
if (err) {
sd_err(("%s: error while trying to keep power\n", __FUNCTION__));
return err;
}
#if defined(OOB_INTR_ONLY)
bcmsdh_oob_intr_set(sdioh->bcmsdh, FALSE);
#endif
dhd_mmc_suspend = TRUE;
smp_mb();
return 0;
}
static int bcmsdh_sdmmc_resume(struct device *pdev)
{
sdioh_info_t *sdioh;
struct sdio_func *func = dev_to_sdio_func(pdev);
sd_trace(("%s Enter\n", __FUNCTION__));
if (func->num != 2)
return 0;
sdioh = sdio_get_drvdata(func);
dhd_mmc_suspend = FALSE;
#if defined(OOB_INTR_ONLY)
bcmsdh_resume(sdioh->bcmsdh);
#endif
smp_mb();
return 0;
}
static const struct dev_pm_ops bcmsdh_sdmmc_pm_ops = {
.suspend = bcmsdh_sdmmc_suspend,
.resume = bcmsdh_sdmmc_resume,
};
#endif /* (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 39)) && defined(CONFIG_PM) */
#if defined(BCMLXSDMMC)
static struct semaphore *notify_semaphore = NULL;
static int dummy_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
if (func && (func->num != 2)) {
return 0;
}
if (notify_semaphore)
up(notify_semaphore);
return 0;
}
static void dummy_remove(struct sdio_func *func)
{
}
static struct sdio_driver dummy_sdmmc_driver = {
.probe = dummy_probe,
.remove = dummy_remove,
.name = "dummy_sdmmc",
.id_table = bcmsdh_sdmmc_ids,
};
int sdio_func_reg_notify(void* semaphore)
{
notify_semaphore = semaphore;
return sdio_register_driver(&dummy_sdmmc_driver);
}
void sdio_func_unreg_notify(void)
{
OSL_SLEEP(15);
sdio_unregister_driver(&dummy_sdmmc_driver);
}
#endif /* defined(BCMLXSDMMC) */
static struct sdio_driver bcmsdh_sdmmc_driver = {
.probe = bcmsdh_sdmmc_probe,
.remove = bcmsdh_sdmmc_remove,
.name = "bcmsdh_sdmmc",
.id_table = bcmsdh_sdmmc_ids,
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 39)) && defined(CONFIG_PM)
.drv = {
.pm = &bcmsdh_sdmmc_pm_ops,
},
#endif /* (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 39)) && defined(CONFIG_PM) */
};
struct sdos_info {
sdioh_info_t *sd;
spinlock_t lock;
};
/* Interrupt enable/disable */
SDIOH_API_RC
sdioh_interrupt_set(sdioh_info_t *sd, bool enable)
{
if (!sd)
return BCME_BADARG;
sd_trace(("%s: %s\n", __FUNCTION__, enable ? "Enabling" : "Disabling"));
return SDIOH_API_RC_SUCCESS;
}
#ifdef BCMSDH_MODULE
static int __init
bcmsdh_module_init(void)
{
int error = 0;
error = sdio_function_init();
return error;
}
static void __exit
bcmsdh_module_cleanup(void)
{
sdio_function_cleanup();
}
module_init(bcmsdh_module_init);
module_exit(bcmsdh_module_cleanup);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION(DESCRIPTION);
MODULE_AUTHOR(AUTHOR);
#endif /* BCMSDH_MODULE */
/*
* module init
*/
int bcmsdh_register_client_driver(void)
{
return sdio_register_driver(&bcmsdh_sdmmc_driver);
}
/*
* module cleanup
*/
void bcmsdh_unregister_client_driver(void)
{
sdio_unregister_driver(&bcmsdh_sdmmc_driver);
}