diff options
Diffstat (limited to 'drivers/net/wireless/bcmdhd/bcmsdh_sdmmc_linux.c')
| -rw-r--r-- | drivers/net/wireless/bcmdhd/bcmsdh_sdmmc_linux.c | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcmdhd/bcmsdh_sdmmc_linux.c b/drivers/net/wireless/bcmdhd/bcmsdh_sdmmc_linux.c new file mode 100644 index 000000000000..726b6391353d --- /dev/null +++ b/drivers/net/wireless/bcmdhd/bcmsdh_sdmmc_linux.c @@ -0,0 +1,332 @@ +/* + * BCMSDH Function Driver for the native SDIO/MMC driver in the Linux Kernel + * + * Copyright (C) 1999-2011, 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,v 1.8.6.2 2011-02-01 18:38:36 Exp $ + */ + +#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/sdio_func.h> +#include <linux/mmc/sdio_ids.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) */ + +#include <bcmsdh_sdmmc.h> + +#include <dhd_dbg.h> + +#ifdef WL_CFG80211 +extern void wl_cfg80211_set_sdio_func(void *func); +#endif + +extern void sdioh_sdmmc_devintr_off(sdioh_info_t *sd); +extern void sdioh_sdmmc_devintr_on(sdioh_info_t *sd); +extern int dhd_os_check_wakelock(void *dhdp); +extern int dhd_os_check_if_up(void *dhdp); +extern void *bcmsdh_get_drvdata(void); + +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"); + +PBCMSDH_SDMMC_INSTANCE gInstance; + +/* Maximum number of bcmsdh_sdmmc devices supported by driver */ +#define BCMSDH_SDMMC_MAX_DEVICES 1 + +extern int bcmsdh_probe(struct device *dev); +extern int bcmsdh_remove(struct device *dev); + +extern volatile bool dhd_mmc_suspend; + +static int bcmsdh_sdmmc_probe(struct sdio_func *func, + const struct sdio_device_id *id) +{ + int ret = 0; + static struct sdio_func sdio_func_0; + sd_trace(("bcmsdh_sdmmc: %s Enter\n", __FUNCTION__)); + sd_trace(("sdio_bcmsdh: func->class=%x\n", func->class)); + sd_trace(("sdio_vendor: 0x%04x\n", func->vendor)); + sd_trace(("sdio_device: 0x%04x\n", func->device)); + sd_trace(("Function#: 0x%04x\n", func->num)); + + if (func->num == 1) { + sdio_func_0.num = 0; + sdio_func_0.card = func->card; + gInstance->func[0] = &sdio_func_0; + if(func->device == 0x4) { /* 4318 */ + gInstance->func[2] = NULL; + sd_trace(("NIC found, calling bcmsdh_probe...\n")); + ret = bcmsdh_probe(&func->dev); + } + } + + gInstance->func[func->num] = func; + + if (func->num == 2) { +#ifdef WL_CFG80211 + wl_cfg80211_set_sdio_func(func); +#endif + sd_trace(("F2 found, calling bcmsdh_probe...\n")); + ret = bcmsdh_probe(&func->dev); + } + + return ret; +} + +static void bcmsdh_sdmmc_remove(struct sdio_func *func) +{ + 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) { + sd_trace(("F2 found, calling bcmsdh_remove...\n")); + bcmsdh_remove(&func->dev); + } else if (func->num == 1) { + sdio_claim_host(func); + sdio_disable_func(func); + sdio_release_host(func); + gInstance->func[1] = NULL; + } +} + +/* devices we support, null terminated */ +static const struct sdio_device_id bcmsdh_sdmmc_ids[] = { + { SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_DEFAULT) }, + { SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4325_SDGWB) }, + { SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4325) }, + { SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329) }, + { SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4319) }, + { SDIO_DEVICE_CLASS(SDIO_CLASS_NONE) }, + { /* 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) +{ + struct sdio_func *func = dev_to_sdio_func(pdev); + + if (func->num != 2) + return 0; + if (dhd_os_check_wakelock(bcmsdh_get_drvdata())) + return -EBUSY; +#if defined(OOB_INTR_ONLY) + bcmsdh_oob_intr_set(0); +#endif + dhd_mmc_suspend = TRUE; + smp_mb(); + + return 0; +} + +static int bcmsdh_sdmmc_resume(struct device *pdev) +{ + struct sdio_func *func = dev_to_sdio_func(pdev); + + if (func->num != 2) + return 0; + dhd_mmc_suspend = FALSE; +#if defined(OOB_INTR_ONLY) + if (dhd_os_check_if_up(bcmsdh_get_drvdata())) + bcmsdh_oob_intr_set(1); +#endif + smp_mb(); + return 0; +} + +static const struct dev_pm_ops bcmsdh_sdmmc_pm_ops = { + .suspend = bcmsdh_sdmmc_suspend, + .resume = bcmsdh_sdmmc_resume, +}; +#endif + +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 +}; + +struct sdos_info { + sdioh_info_t *sd; + spinlock_t lock; +}; + + +int +sdioh_sdmmc_osinit(sdioh_info_t *sd) +{ + struct sdos_info *sdos; + + sdos = (struct sdos_info*)MALLOC(sd->osh, sizeof(struct sdos_info)); + sd->sdos_info = (void*)sdos; + if (sdos == NULL) + return BCME_NOMEM; + + sdos->sd = sd; + spin_lock_init(&sdos->lock); + return BCME_OK; +} + +void +sdioh_sdmmc_osfree(sdioh_info_t *sd) +{ + struct sdos_info *sdos; + ASSERT(sd && sd->sdos_info); + + sdos = (struct sdos_info *)sd->sdos_info; + MFREE(sd->osh, sdos, sizeof(struct sdos_info)); +} + +/* Interrupt enable/disable */ +SDIOH_API_RC +sdioh_interrupt_set(sdioh_info_t *sd, bool enable) +{ + ulong flags; + struct sdos_info *sdos; + + sd_trace(("%s: %s\n", __FUNCTION__, enable ? "Enabling" : "Disabling")); + + sdos = (struct sdos_info *)sd->sdos_info; + ASSERT(sdos); + +#if !defined(OOB_INTR_ONLY) + if (enable && !(sd->intr_handler && sd->intr_handler_arg)) { + sd_err(("%s: no handler registered, will not enable\n", __FUNCTION__)); + return SDIOH_API_RC_FAIL; + } +#endif /* !defined(OOB_INTR_ONLY) */ + + /* Ensure atomicity for enable/disable calls */ + spin_lock_irqsave(&sdos->lock, flags); + + sd->client_intr_enabled = enable; + if (enable) { + sdioh_sdmmc_devintr_on(sd); + } else { + sdioh_sdmmc_devintr_off(sd); + } + + spin_unlock_irqrestore(&sdos->lock, flags); + + return SDIOH_API_RC_SUCCESS; +} + + +#ifdef BCMSDH_MODULE +static int __init +bcmsdh_module_init(void) +{ + int error = 0; + 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 sdio_function_init(void) +{ + int error = 0; + sd_trace(("bcmsdh_sdmmc: %s Enter\n", __FUNCTION__)); + + gInstance = kzalloc(sizeof(BCMSDH_SDMMC_INSTANCE), GFP_KERNEL); + if (!gInstance) + return -ENOMEM; + + error = sdio_register_driver(&bcmsdh_sdmmc_driver); + + return error; +} + +/* + * module cleanup +*/ +extern int bcmsdh_remove(struct device *dev); +void sdio_function_cleanup(void) +{ + sd_trace(("%s Enter\n", __FUNCTION__)); + + + sdio_unregister_driver(&bcmsdh_sdmmc_driver); + + if (gInstance) + kfree(gInstance); +} |