[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / ath6kl / os / linux / ar6000_android.c

//------------------------------------------------------------------------------
// Copyright (c) 2004-2010 Atheros Communications Inc.
// All rights reserved.
//
// 
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
//
//
// Author(s): ="Atheros"
//------------------------------------------------------------------------------
#include "ar6000_drv.h"
#include "htc.h"
#include <linux/vmalloc.h>
#include <linux/fs.h>

#ifdef CONFIG_HAS_EARLYSUSPEND
#include <linux/earlysuspend.h>
#endif

bool enable_mmc_host_detect_change = false;
static void ar6000_enable_mmchost_detect_change(int enable);


char fwpath[256] = "/system/wifi";
int wowledon;
unsigned int enablelogcat;

extern int bmienable;
extern struct net_device *ar6000_devices[];
extern char ifname[];

const char def_ifname[] = "wlan0";
module_param_string(fwpath, fwpath, sizeof(fwpath), 0644);
module_param(enablelogcat, uint, 0644);
module_param(wowledon, int, 0644);

#ifdef CONFIG_HAS_EARLYSUSPEND
static int screen_is_off;
static struct early_suspend ar6k_early_suspend;
#endif

static int (*ar6000_avail_ev_p)(void *, void *);

#if defined(CONFIG_ANDROID_LOGGER) && (!defined(CONFIG_MMC_MSM))
int logger_write(const enum logidx index,
                const unsigned char prio,
                const char __kernel * const tag,
                const char __kernel * const fmt,
                ...)
{
    int ret = 0;
    va_list vargs;
    struct file *filp = (struct file *)-ENOENT;
    mm_segment_t oldfs;
    struct iovec vec[3];
    int tag_bytes = strlen(tag) + 1, msg_bytes;
    char *msg;      
    va_start(vargs, fmt);
    msg = kvasprintf(GFP_ATOMIC, fmt, vargs);
    va_end(vargs);
    if (!msg)
        return -ENOMEM;
    if (in_interrupt()) {
        /* we have no choice since aio_write may be blocked */
        printk(KERN_ALERT "%s", msg);
        goto out_free_message;
    }
    msg_bytes = strlen(msg) + 1;
    if (msg_bytes <= 1) /* empty message? */
        goto out_free_message; /* don't bother, then */
    if ((msg_bytes + tag_bytes + 1) > 2048) {
        ret = -E2BIG;
        goto out_free_message;
    }
            
    vec[0].iov_base  = (unsigned char *) &prio;
    vec[0].iov_len    = 1;
    vec[1].iov_base   = (void *) tag;
    vec[1].iov_len    = strlen(tag) + 1;
    vec[2].iov_base   = (void *) msg;
    vec[2].iov_len    = strlen(msg) + 1; 

    oldfs = get_fs();
    set_fs(KERNEL_DS);
    do {
        filp = filp_open("/dev/log/main", O_WRONLY, S_IRUSR);
        if (IS_ERR(filp) || !filp->f_op) {
            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: filp_open /dev/log/main error\n", __FUNCTION__));
            ret = -ENOENT;
            break;
        }

        if (filp->f_op->aio_write) {
            int nr_segs = sizeof(vec) / sizeof(vec[0]);
            int len = vec[0].iov_len + vec[1].iov_len + vec[2].iov_len;
            struct kiocb kiocb;
            init_sync_kiocb(&kiocb, filp);
            kiocb.ki_pos = 0;
            kiocb.ki_left = len;
            kiocb.ki_nbytes = len;
            ret = filp->f_op->aio_write(&kiocb, vec, nr_segs, kiocb.ki_pos);
        }
        
    } while (0);

    if (!IS_ERR(filp)) {
        filp_close(filp, NULL);
    }
    set_fs(oldfs);
out_free_message:
    if (msg) {
        kfree(msg);
    }
    return ret;
}
#endif

int android_logger_lv(void *module, int mask)
{
    switch (mask) {
    case ATH_DEBUG_ERR:
        return 6;
    case ATH_DEBUG_INFO:
        return 4;
    case ATH_DEBUG_WARN:
        return 5; 
    case ATH_DEBUG_TRC:        
        return 3; 
    default:
#ifdef DEBUG
        if (!module) {
            return 3;
        } else if (module == &GET_ATH_MODULE_DEBUG_VAR_NAME(driver)) {
            return (mask <=ATH_DEBUG_MAKE_MODULE_MASK(3)) ? 3 : 2;
        } else if (module == &GET_ATH_MODULE_DEBUG_VAR_NAME(htc)) {
            return 2;
        } else {
            return 3;
        }
#else
        return 3; /* DEBUG */
#endif
    }
}

static int android_readwrite_file(const char *filename, char *rbuf, const char *wbuf, size_t length)
{
    int ret = 0;
    struct file *filp = (struct file *)-ENOENT;
    mm_segment_t oldfs;
    oldfs = get_fs();
    set_fs(KERNEL_DS);
    do {
        int mode = (wbuf) ? O_RDWR : O_RDONLY;
        filp = filp_open(filename, mode, S_IRUSR);
        if (IS_ERR(filp) || !filp->f_op) {
            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: file %s filp_open error\n", __FUNCTION__, filename));
            ret = -ENOENT;
            break;
        }
    
        if (length==0) {
            /* Read the length of the file only */
            struct inode    *inode;

            inode = GET_INODE_FROM_FILEP(filp);
            if (!inode) {
                AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: Get inode from %s failed\n", __FUNCTION__, filename));
                ret = -ENOENT;
                break;
            }
            ret = i_size_read(inode->i_mapping->host);
            break;
        }

        if (wbuf) {
            if ( (ret=filp->f_op->write(filp, wbuf, length, &filp->f_pos)) < 0) {
                AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: Write %u bytes to file %s error %d\n", __FUNCTION__, 
                                length, filename, ret));
                break;
            }
        } else {
            if ( (ret=filp->f_op->read(filp, rbuf, length, &filp->f_pos)) < 0) {
                AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: Read %u bytes from file %s error %d\n", __FUNCTION__,
                                length, filename, ret));
                break;
            }
        }
    } while (0);

    if (!IS_ERR(filp)) {
        filp_close(filp, NULL);
    }
    set_fs(oldfs);

    return ret;
}

int android_request_firmware(const struct firmware **firmware_p, const char *name,
                     struct device *device)
{
    int ret = 0;
    struct firmware *firmware;
    char filename[256];
    const char *raw_filename = name;
	*firmware_p = firmware = kzalloc(sizeof(*firmware), GFP_KERNEL);
    if (!firmware) 
		return -ENOMEM;
	sprintf(filename, "%s/%s", fwpath, raw_filename);
    do {
        size_t length, bufsize, bmisize;

        if ( (ret=android_readwrite_file(filename, NULL, NULL, 0)) < 0) {
            break;
        } else {
            length = ret;
        }
    
        bufsize = ALIGN(length, PAGE_SIZE);
        bmisize = A_ROUND_UP(length, 4);
        bufsize = max(bmisize, bufsize);
        firmware->data = vmalloc(bufsize);
        firmware->size = length;
        if (!firmware->data) {
            AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("%s: Cannot allocate buffer for firmware\n", __FUNCTION__));
            ret = -ENOMEM;
            break;
        }
    
        if ( (ret=android_readwrite_file(filename, (char*)firmware->data, NULL, length)) != length) {
            AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("%s: file read error, ret %d request %d\n", __FUNCTION__, ret, length));
            ret = -1;
            break;
        }
    
    } while (0);

    if (ret<0) {
        if (firmware) {
            if (firmware->data)
                vfree(firmware->data);
            kfree(firmware);
        }
        *firmware_p = NULL;
    } else {
        ret = 0;
    }
    return ret;    
}

void android_release_firmware(const struct firmware *firmware)
{
	if (firmware) {
        if (firmware->data)
            vfree(firmware->data);
        kfree(firmware);
    }
}

static int ar6000_android_avail_ev(void *context, void *hif_handle)
{
    int ret;
    ar6000_enable_mmchost_detect_change(0);
    ret = ar6000_avail_ev_p(context, hif_handle);
    return ret;
}

/* Useful for qualcom platform to detect our wlan card for mmc stack */
static void ar6000_enable_mmchost_detect_change(int enable)
{
#ifdef CONFIG_MMC_MSM
#define MMC_MSM_DEV "msm_sdcc.1"
    char buf[3];
    int length;

    if (!enable_mmc_host_detect_change) {
        return;
    }
    length = snprintf(buf, sizeof(buf), "%d\n", enable ? 1 : 0);
    if (android_readwrite_file("/sys/devices/platform/" MMC_MSM_DEV "/detect_change", 
                               NULL, buf, length) < 0) {
        /* fall back to polling */
        android_readwrite_file("/sys/devices/platform/" MMC_MSM_DEV "/polling", NULL, buf, length);
    }
#endif
}

#ifdef CONFIG_HAS_EARLYSUSPEND
static void android_early_suspend(struct early_suspend *h)
{
    screen_is_off = 1;
}

static void android_late_resume(struct early_suspend *h)
{
    screen_is_off = 0;
}
#endif

void android_module_init(OSDRV_CALLBACKS *osdrvCallbacks)
{
    bmienable = 1;
    if (ifname[0] == '\0')
        strcpy(ifname, def_ifname);
#ifdef CONFIG_HAS_EARLYSUSPEND
    ar6k_early_suspend.suspend = android_early_suspend;
    ar6k_early_suspend.resume  = android_late_resume;
    ar6k_early_suspend.level   = EARLY_SUSPEND_LEVEL_BLANK_SCREEN;
    register_early_suspend(&ar6k_early_suspend);
#endif

    ar6000_avail_ev_p = osdrvCallbacks->deviceInsertedHandler;
    osdrvCallbacks->deviceInsertedHandler = ar6000_android_avail_ev;

    ar6000_enable_mmchost_detect_change(1);
}

void android_module_exit(void)
{
#ifdef CONFIG_HAS_EARLYSUSPEND
    unregister_early_suspend(&ar6k_early_suspend);
#endif
    ar6000_enable_mmchost_detect_change(1);
}

#ifdef CONFIG_PM
void android_ar6k_check_wow_status(AR_SOFTC_T *ar, struct sk_buff *skb, bool isEvent)
{
    if (
#ifdef CONFIG_HAS_EARLYSUSPEND
        screen_is_off && 
#endif 
            skb && ar->arConnected) {
        bool needWake = false;
        if (isEvent) {
            if (A_NETBUF_LEN(skb) >= sizeof(u16)) {
                u16 cmd = *(const u16 *)A_NETBUF_DATA(skb);
                switch (cmd) {
                case WMI_CONNECT_EVENTID:
                case WMI_DISCONNECT_EVENTID:
                    needWake = true;
                    break;
                default:
                    /* dont wake lock the system for other event */
                    break;
                }
            }
        } else if (A_NETBUF_LEN(skb) >= sizeof(ATH_MAC_HDR)) {
            ATH_MAC_HDR *datap = (ATH_MAC_HDR *)A_NETBUF_DATA(skb);
            if (!IEEE80211_IS_MULTICAST(datap->dstMac)) {
                switch (A_BE2CPU16(datap->typeOrLen)) {
                case 0x0800: /* IP */
                case 0x888e: /* EAPOL */
                case 0x88c7: /* RSN_PREAUTH */
                case 0x88b4: /* WAPI */
                     needWake = true;
                     break;
                case 0x0806: /* ARP is not important to hold wake lock */
                default:
                    break;
                }
            }
        }
        if (needWake) {
            /* keep host wake up if there is any event and packate comming in*/
            if (wowledon) {
                char buf[32];
                int len = sprintf(buf, "on");
                android_readwrite_file("/sys/power/state", NULL, buf, len);

                len = sprintf(buf, "%d", 127);
                android_readwrite_file("/sys/class/leds/lcd-backlight/brightness",
                                       NULL, buf,len);
            }
        }
    }
}
#endif /* CONFIG_PM */
Commit	Line	Data
30295c89 VM	1	//------------------------------------------------------------------------------
	2	// Copyright (c) 2004-2010 Atheros Communications Inc.
	3	// All rights reserved.
	4	//
	5	//
	6	//
	7	// Permission to use, copy, modify, and/or distribute this software for any
	8	// purpose with or without fee is hereby granted, provided that the above
	9	// copyright notice and this permission notice appear in all copies.
	10	//
	11	// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	12	// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	13	// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	14	// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	15	// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	16	// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	17	// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	18	//
	19	//
	20	//
	21	// Author(s): ="Atheros"
	22	//------------------------------------------------------------------------------
	23	#include "ar6000_drv.h"
	24	#include "htc.h"
	25	#include <linux/vmalloc.h>
	26	#include <linux/fs.h>
	27
30295c89 VM	28	#ifdef CONFIG_HAS_EARLYSUSPEND
	29	#include <linux/earlysuspend.h>
	30	#endif
	31
1071a134	32	bool enable_mmc_host_detect_change = false;
30295c89 VM	33	static void ar6000_enable_mmchost_detect_change(int enable);
	34
	35
	36	char fwpath[256] = "/system/wifi";
	37	int wowledon;
	38	unsigned int enablelogcat;
	39
	40	extern int bmienable;
	41	extern struct net_device *ar6000_devices[];
	42	extern char ifname[];
	43
30295c89 VM	44	const char def_ifname[] = "wlan0";
	45	module_param_string(fwpath, fwpath, sizeof(fwpath), 0644);
	46	module_param(enablelogcat, uint, 0644);
	47	module_param(wowledon, int, 0644);
	48
	49	#ifdef CONFIG_HAS_EARLYSUSPEND
	50	static int screen_is_off;
	51	static struct early_suspend ar6k_early_suspend;
	52	#endif
	53
1f4c34bd	54	static int (ar6000_avail_ev_p)(void , void *);
30295c89 VM	55
	56	#if defined(CONFIG_ANDROID_LOGGER) && (!defined(CONFIG_MMC_MSM))
	57	int logger_write(const enum logidx index,
	58	const unsigned char prio,
	59	const char __kernel * const tag,
	60	const char __kernel * const fmt,
	61	...)
	62	{
	63	int ret = 0;
	64	va_list vargs;
	65	struct file filp = (struct file )-ENOENT;
	66	mm_segment_t oldfs;
	67	struct iovec vec[3];
	68	int tag_bytes = strlen(tag) + 1, msg_bytes;
	69	char *msg;
	70	va_start(vargs, fmt);
	71	msg = kvasprintf(GFP_ATOMIC, fmt, vargs);
	72	va_end(vargs);
	73	if (!msg)
	74	return -ENOMEM;
	75	if (in_interrupt()) {
	76	/* we have no choice since aio_write may be blocked */
	77	printk(KERN_ALERT "%s", msg);
	78	goto out_free_message;
	79	}
	80	msg_bytes = strlen(msg) + 1;
	81	if (msg_bytes <= 1) /* empty message? */
	82	goto out_free_message; /* don't bother, then */
	83	if ((msg_bytes + tag_bytes + 1) > 2048) {
	84	ret = -E2BIG;
	85	goto out_free_message;
	86	}
	87
	88	vec[0].iov_base = (unsigned char *) &prio;
	89	vec[0].iov_len = 1;
	90	vec[1].iov_base = (void *) tag;
	91	vec[1].iov_len = strlen(tag) + 1;
	92	vec[2].iov_base = (void *) msg;
	93	vec[2].iov_len = strlen(msg) + 1;
	94
	95	oldfs = get_fs();
	96	set_fs(KERNEL_DS);
	97	do {
	98	filp = filp_open("/dev/log/main", O_WRONLY, S_IRUSR);
	99	if (IS_ERR(filp) \|\| !filp->f_op) {
	100	AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: filp_open /dev/log/main error\n", __FUNCTION__));
	101	ret = -ENOENT;
	102	break;
	103	}
	104
	105	if (filp->f_op->aio_write) {
	106	int nr_segs = sizeof(vec) / sizeof(vec[0]);
	107	int len = vec[0].iov_len + vec[1].iov_len + vec[2].iov_len;
	108	struct kiocb kiocb;
	109	init_sync_kiocb(&kiocb, filp);
	110	kiocb.ki_pos = 0;
	111	kiocb.ki_left = len;
	112	kiocb.ki_nbytes = len;
	113	ret = filp->f_op->aio_write(&kiocb, vec, nr_segs, kiocb.ki_pos);
	114	}
	115
	116	} while (0);
	117
	118	if (!IS_ERR(filp)) {
119	filp_close(filp, NULL);
120	}
121	set_fs(oldfs);
122	out_free_message:
123	if (msg) {
124	kfree(msg);
125	}
126	return ret;
127	}
128	#endif
129
130	int android_logger_lv(void *module, int mask)
131	{
132	switch (mask) {
133	case ATH_DEBUG_ERR:
134	return 6;
135	case ATH_DEBUG_INFO:
136	return 4;
137	case ATH_DEBUG_WARN:
138	return 5;
139	case ATH_DEBUG_TRC:
140	return 3;
141	default:
142	#ifdef DEBUG
143	if (!module) {
144	return 3;
145	} else if (module == &GET_ATH_MODULE_DEBUG_VAR_NAME(driver)) {
146	return (mask <=ATH_DEBUG_MAKE_MODULE_MASK(3)) ? 3 : 2;
147	} else if (module == &GET_ATH_MODULE_DEBUG_VAR_NAME(htc)) {
148	return 2;
149	} else {
150	return 3;
151	}
152	#else
153	return 3; /* DEBUG */
154	#endif
155	}
156	}
157
4c42080f	158	static int android_readwrite_file(const char filename, char rbuf, const char *wbuf, size_t length)
30295c89 VM	159	{
	160	int ret = 0;
	161	struct file filp = (struct file )-ENOENT;
	162	mm_segment_t oldfs;
	163	oldfs = get_fs();
	164	set_fs(KERNEL_DS);
	165	do {
	166	int mode = (wbuf) ? O_RDWR : O_RDONLY;
	167	filp = filp_open(filename, mode, S_IRUSR);
	168	if (IS_ERR(filp) \|\| !filp->f_op) {
	169	AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: file %s filp_open error\n", __FUNCTION__, filename));
	170	ret = -ENOENT;
	171	break;
	172	}
	173
	174	if (length==0) {
	175	/* Read the length of the file only */
	176	struct inode *inode;
	177
	178	inode = GET_INODE_FROM_FILEP(filp);
	179	if (!inode) {
	180	AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: Get inode from %s failed\n", __FUNCTION__, filename));
	181	ret = -ENOENT;
	182	break;
	183	}
	184	ret = i_size_read(inode->i_mapping->host);
	185	break;
	186	}
	187
	188	if (wbuf) {
	189	if ( (ret=filp->f_op->write(filp, wbuf, length, &filp->f_pos)) < 0) {
	190	AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: Write %u bytes to file %s error %d\n", __FUNCTION__,
	191	length, filename, ret));
	192	break;
	193	}
	194	} else {
	195	if ( (ret=filp->f_op->read(filp, rbuf, length, &filp->f_pos)) < 0) {
	196	AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: Read %u bytes from file %s error %d\n", __FUNCTION__,
	197	length, filename, ret));
	198	break;
	199	}
	200	}
	201	} while (0);
	202
	203	if (!IS_ERR(filp)) {
	204	filp_close(filp, NULL);
	205	}
	206	set_fs(oldfs);
	207
	208	return ret;
	209	}
	210
	211	int android_request_firmware(const struct firmware *firmware_p, const char name,
	212	struct device *device)
	213	{
	214	int ret = 0;
	215	struct firmware *firmware;
	216	char filename[256];
	217	const char *raw_filename = name;
	218	firmware_p = firmware = kzalloc(sizeof(firmware), GFP_KERNEL);
	219	if (!firmware)
	220	return -ENOMEM;
	221	sprintf(filename, "%s/%s", fwpath, raw_filename);
	222	do {
223	size_t length, bufsize, bmisize;
224
225	if ( (ret=android_readwrite_file(filename, NULL, NULL, 0)) < 0) {
226	break;
227	} else {
228	length = ret;
229	}
230
231	bufsize = ALIGN(length, PAGE_SIZE);
232	bmisize = A_ROUND_UP(length, 4);
233	bufsize = max(bmisize, bufsize);
234	firmware->data = vmalloc(bufsize);
235	firmware->size = length;
236	if (!firmware->data) {
237	AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("%s: Cannot allocate buffer for firmware\n", __FUNCTION__));
238	ret = -ENOMEM;
239	break;
240	}
241
242	if ( (ret=android_readwrite_file(filename, (char*)firmware->data, NULL, length)) != length) {
243	AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("%s: file read error, ret %d request %d\n", __FUNCTION__, ret, length));
244	ret = -1;
245	break;
246	}
247
248	} while (0);
249
250	if (ret<0) {
251	if (firmware) {
252	if (firmware->data)
253	vfree(firmware->data);
254	kfree(firmware);
255	}
256	*firmware_p = NULL;
257	} else {
258	ret = 0;
259	}
260	return ret;
261	}
262
263	void android_release_firmware(const struct firmware *firmware)
264	{
265	if (firmware) {
266	if (firmware->data)
267	vfree(firmware->data);
268	kfree(firmware);
269	}
270	}
271
1f4c34bd	272	static int ar6000_android_avail_ev(void context, void hif_handle)
30295c89	273	{
1f4c34bd	274	int ret;
30295c89 VM	275	ar6000_enable_mmchost_detect_change(0);
30295c89 VM	276	ret = ar6000_avail_ev_p(context, hif_handle);
30295c89 VM	277	return ret;
	278	}
	279
	280	/* Useful for qualcom platform to detect our wlan card for mmc stack */
	281	static void ar6000_enable_mmchost_detect_change(int enable)
	282	{
	283	#ifdef CONFIG_MMC_MSM
	284	#define MMC_MSM_DEV "msm_sdcc.1"
	285	char buf[3];
	286	int length;
	287
	288	if (!enable_mmc_host_detect_change) {
	289	return;
	290	}
	291	length = snprintf(buf, sizeof(buf), "%d\n", enable ? 1 : 0);
	292	if (android_readwrite_file("/sys/devices/platform/" MMC_MSM_DEV "/detect_change",
	293	NULL, buf, length) < 0) {
	294	/* fall back to polling */
	295	android_readwrite_file("/sys/devices/platform/" MMC_MSM_DEV "/polling", NULL, buf, length);
	296	}
	297	#endif
	298	}
	299
	300	#ifdef CONFIG_HAS_EARLYSUSPEND
	301	static void android_early_suspend(struct early_suspend *h)
	302	{
	303	screen_is_off = 1;
	304	}
	305
	306	static void android_late_resume(struct early_suspend *h)
	307	{
	308	screen_is_off = 0;
	309	}
	310	#endif
	311
	312	void android_module_init(OSDRV_CALLBACKS *osdrvCallbacks)
	313	{
	314	bmienable = 1;
	315	if (ifname[0] == '\0')
	316	strcpy(ifname, def_ifname);
30295c89 VM	317	#ifdef CONFIG_HAS_EARLYSUSPEND
	318	ar6k_early_suspend.suspend = android_early_suspend;
	319	ar6k_early_suspend.resume = android_late_resume;
	320	ar6k_early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN;
	321	register_early_suspend(&ar6k_early_suspend);
	322	#endif
	323
	324	ar6000_avail_ev_p = osdrvCallbacks->deviceInsertedHandler;
	325	osdrvCallbacks->deviceInsertedHandler = ar6000_android_avail_ev;
	326
	327	ar6000_enable_mmchost_detect_change(1);
	328	}
	329
	330	void android_module_exit(void)
	331	{
	332	#ifdef CONFIG_HAS_EARLYSUSPEND
	333	unregister_early_suspend(&ar6k_early_suspend);
30295c89 VM	334	#endif
	335	ar6000_enable_mmchost_detect_change(1);
	336	}
	337
	338	#ifdef CONFIG_PM
1071a134	339	void android_ar6k_check_wow_status(AR_SOFTC_T ar, struct sk_buff skb, bool isEvent)
30295c89 VM	340	{
	341	if (
	342	#ifdef CONFIG_HAS_EARLYSUSPEND
	343	screen_is_off &&
	344	#endif
	345	skb && ar->arConnected) {
1071a134	346	bool needWake = false;
30295c89	347	if (isEvent) {
4853ac05 JP	348	if (A_NETBUF_LEN(skb) >= sizeof(u16)) {
4853ac05 JP	349	u16 cmd = (const u16 )A_NETBUF_DATA(skb);
30295c89 VM	350	switch (cmd) {
	351	case WMI_CONNECT_EVENTID:
	352	case WMI_DISCONNECT_EVENTID:
1071a134	353	needWake = true;
30295c89 VM	354	break;
	355	default:
	356	/* dont wake lock the system for other event */
	357	break;
	358	}
	359	}
	360	} else if (A_NETBUF_LEN(skb) >= sizeof(ATH_MAC_HDR)) {
	361	ATH_MAC_HDR datap = (ATH_MAC_HDR )A_NETBUF_DATA(skb);
	362	if (!IEEE80211_IS_MULTICAST(datap->dstMac)) {
	363	switch (A_BE2CPU16(datap->typeOrLen)) {
	364	case 0x0800: /* IP */
	365	case 0x888e: /* EAPOL */
	366	case 0x88c7: /* RSN_PREAUTH */
	367	case 0x88b4: /* WAPI */
1071a134	368	needWake = true;
30295c89 VM	369	break;
	370	case 0x0806: /* ARP is not important to hold wake lock */
	371	default:
	372	break;
	373	}
	374	}
	375	}
	376	if (needWake) {
	377	/* keep host wake up if there is any event and packate comming in*/
30295c89 VM	378	if (wowledon) {
	379	char buf[32];
	380	int len = sprintf(buf, "on");
	381	android_readwrite_file("/sys/power/state", NULL, buf, len);
	382
	383	len = sprintf(buf, "%d", 127);
	384	android_readwrite_file("/sys/class/leds/lcd-backlight/brightness",
	385	NULL, buf,len);
	386	}
	387	}
	388	}
	389	}
	390	#endif /* CONFIG_PM */