Adding ath6kl driver support to compat-wireless

chromeos/compat-wireless/drivers/staging/ath6kl/os/linux/ar6000_android.c

Index: chromeos/compat-wireless/drivers/staging/ath6kl/os/linux/ar6000_android.c
diff --git a/chromeos/compat-wireless/drivers/staging/ath6kl/os/linux/ar6000_android.c b/chromeos/compat-wireless/drivers/staging/ath6kl/os/linux/ar6000_android.c
new file mode 100644
index 0000000000000000000000000000000000000000..a588825b9dabbaa22faa1453b22832e6281ea86c
--- /dev/null
+++ b/chromeos/compat-wireless/drivers/staging/ath6kl/os/linux/ar6000_android.c
@@ -0,0 +1,413 @@
+//------------------------------------------------------------------------------
+// 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_WAKELOCK
+#include <linux/wakelock.h>
+#endif
+#ifdef CONFIG_HAS_EARLYSUSPEND
+#include <linux/earlysuspend.h>
+#endif
+
+A_BOOL enable_mmc_host_detect_change = 0;
+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[];
+
+#ifdef CONFIG_HAS_WAKELOCK
+extern struct wake_lock ar6k_wow_wake_lock;
+struct wake_lock ar6k_init_wake_lock;
+#endif
+
+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 A_STATUS (*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 A_CHAR *filename, A_CHAR *rbuf, const A_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 A_STATUS ar6000_android_avail_ev(void *context, void *hif_handle)
+{
+    A_STATUS ret;    
+#ifdef CONFIG_HAS_WAKELOCK
+    wake_lock(&ar6k_init_wake_lock);
+#endif
+    ar6000_enable_mmchost_detect_change(0);
+    ret = ar6000_avail_ev_p(context, hif_handle);
+#ifdef CONFIG_HAS_WAKELOCK
+    wake_unlock(&ar6k_init_wake_lock);
+#endif
+    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_WAKELOCK
+    wake_lock_init(&ar6k_init_wake_lock, WAKE_LOCK_SUSPEND, "ar6k_init");
+#endif
+#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
+#ifdef CONFIG_HAS_WAKELOCK
+    wake_lock_destroy(&ar6k_init_wake_lock);
+#endif
+    ar6000_enable_mmchost_detect_change(1);
+}
+
+#ifdef CONFIG_PM
+void android_ar6k_check_wow_status(AR_SOFTC_T *ar, struct sk_buff *skb, A_BOOL isEvent)
+{
+    if (
+#ifdef CONFIG_HAS_EARLYSUSPEND
+        screen_is_off && 
+#endif 
+            skb && ar->arConnected) {
+        A_BOOL needWake = FALSE;
+        if (isEvent) {
+            if (A_NETBUF_LEN(skb) >= sizeof(A_UINT16)) {
+                A_UINT16 cmd = *(const A_UINT16 *)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*/
+#ifdef CONFIG_HAS_WAKELOCK
+            wake_lock_timeout(&ar6k_wow_wake_lock, 3*HZ);
+#endif
+            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 */