ssize_t BT_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos)
{
int retval = 0;
int written = 0;
down(&wr_mtx);
BT_DBG_FUNC("%s: count %d pos %lld\n", __func__, count, *f_pos);
if(retflag)
{
if (retflag == 1) //reset start
{
retval = -88;
BT_INFO_FUNC("MT662x reset Write: start\n");
}
else if (retflag == 2) // reset end
{
retval = -99;
BT_INFO_FUNC("MT662x reset Write: end\n");
}
goto OUT;
}
if (count > 0)
{
int copy_size = (count < MTKSTP_BUFFER_SIZE) ? count : MTKSTP_BUFFER_SIZE;
if (copy_from_user(&o_buf[0], &buf[0], copy_size))
{
retval = -EFAULT;
goto OUT;
}
//printk("%02x ", val);
written = mtk_wcn_stp_send_data(&o_buf[0], copy_size, BT_TASK_INDX);
if(0 == written)
{
retval = -ENOSPC;
/*no windowspace in STP is available, native process should not call BT_write with no delay at all*/
BT_ERR_FUNC("target packet length:%d, write success length:%d, retval = %d.\n", count, written, retval);
}
else
{
retval = written;
}
}else
{
retval = -EFAULT;
BT_ERR_FUNC("target packet length:%d is not allowed, retval = %d.\n", count, retval);
}
OUT:
up(&wr_mtx);
return (retval);
}
ssize_t BT_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos)
{
INT32 retval = 0;
INT32 written = 0;
down(&wr_mtx);
BT_DBG_FUNC("%s: count %zd pos %lld\n", __func__, count, *f_pos);
if (retflag) {
if (retflag == 1) { /* reset start */
retval = -88;
BT_INFO_FUNC("MT662x reset Write: start\n");
} else if (retflag == 2) { /* reset end */
retval = -99;
BT_INFO_FUNC("MT662x reset Write: end\n");
}
goto OUT;
}
if (count > 0) {
INT32 copy_size;
if (count < BT_BUFFER_SIZE) {
copy_size = count;
} else {
copy_size = BT_BUFFER_SIZE;
BT_ERR_FUNC(" count > BT_BUFFER_SIZE\n");
}
if (copy_from_user(&o_buf[0], &buf[0], copy_size)) {
retval = -EFAULT;
goto OUT;
}
/* pr_warn("%02x ", val); */
written = mtk_wcn_stp_send_data(&o_buf[0], copy_size, BT_TASK_INDX);
if (0 == written) {
retval = -ENOSPC;
/*no windowspace is available, native process should not call BT_write with no delay at all */
BT_ERR_FUNC
("target packet length:%zd, write success length:%d, retval = %d.\n",
count, written, retval);
} else {
retval = written;
}
} else {
retval = -EFAULT;
BT_ERR_FUNC("target packet length:%zd is not allowed, retval = %d.\n", count, retval);
}
OUT:
up(&wr_mtx);
return retval;
}
ssize_t BT_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos)
{
INT32 retval = 0;
INT32 write_size;
INT32 written = 0;
down(&wr_mtx);
BT_DBG_FUNC("%s: count %zd pos %lld\n", __func__, count, *f_pos);
if (rstflag) {
if (rstflag == 1) { /* Reset start */
retval = -88;
BT_INFO_FUNC("%s: detect whole chip reset start\n", __func__);
} else if (rstflag == 2) { /* Reset end */
retval = -99;
BT_INFO_FUNC("%s: detect whole chip reset end\n", __func__);
}
goto OUT;
}
if (count > 0) {
if (count < BT_BUFFER_SIZE) {
write_size = count;
} else {
write_size = BT_BUFFER_SIZE;
BT_ERR_FUNC("%s: count > BT_BUFFER_SIZE\n", __func__);
}
if (copy_from_user(&o_buf[0], &buf[0], write_size)) {
retval = -EFAULT;
goto OUT;
}
written = mtk_wcn_stp_send_data(&o_buf[0], write_size, BT_TASK_INDX);
if (0 == written) {
retval = -ENOSPC;
/* No space is available, native program should not call BT_write with no delay */
BT_ERR_FUNC
("Packet length %zd, sent length %d, retval = %d\n",
count, written, retval);
} else {
retval = written;
}
} else {
retval = -EFAULT;
BT_ERR_FUNC("Packet length %zd is not allowed, retval = %d\n", count, retval);
}
OUT:
up(&wr_mtx);
return retval;
}
static int BT_open(struct inode *inode, struct file *file)
{
BT_INFO_FUNC("%s: major %d minor %d (pid %d)\n", __func__,
imajor(inode),
iminor(inode),
current->pid
);
#if 1 /* GeorgeKuo: turn on function before check stp ready */
/* turn on BT */
if (MTK_WCN_BOOL_FALSE == mtk_wcn_wmt_func_on(WMTDRV_TYPE_BT)) {
BT_WARN_FUNC("WMT turn on BT fail!\n");
return -ENODEV;
}else{
retflag = 0;
mtk_wcn_wmt_msgcb_reg(WMTDRV_TYPE_BT, bt_cdev_rst_cb);
BT_INFO_FUNC("WMT register BT rst cb!\n");
}
#endif
if (mtk_wcn_stp_is_ready()) {
#if 0 /* GeorgeKuo: turn on function before check stp ready */
/* turn on BT */
if (MTK_WCN_BOOL_FALSE == mtk_wcn_wmt_func_on(WMTDRV_TYPE_BT)) {
BT_WARN_FUNC("WMT turn on BT fail!\n");
return -ENODEV;
}
#endif
mtk_wcn_stp_set_bluez(0);
BT_INFO_FUNC("Now it's in MTK Bluetooth Mode\n");
BT_INFO_FUNC("WMT turn on BT OK!\n");
BT_INFO_FUNC("STP is ready!\n");
platform_load_nvram_data(BT_NVRAM_CUSTOM_NAME,
(char *)&g_nvram_btdata, sizeof(g_nvram_btdata));
BT_INFO_FUNC("Read NVRAM : BD address %02x%02x%02x%02x%02x%02x Cap 0x%02x Codec 0x%02x\n",
g_nvram_btdata[0], g_nvram_btdata[1], g_nvram_btdata[2],
g_nvram_btdata[3], g_nvram_btdata[4], g_nvram_btdata[5],
g_nvram_btdata[6], g_nvram_btdata[7]);
mtk_wcn_stp_register_event_cb(BT_TASK_INDX, BT_event_cb);
BT_INFO_FUNC("mtk_wcn_stp_register_event_cb finish\n");
}
else {
BT_ERR_FUNC("STP is not ready\n");
/*return error code*/
return -ENODEV;
}
// init_MUTEX(&wr_mtx);
sema_init(&wr_mtx, 1);
// init_MUTEX(&rd_mtx);
sema_init(&rd_mtx, 1);
BT_INFO_FUNC("finish\n");
return 0;
}
static int BT_init(void)
{
dev_t dev = MKDEV(BT_major, 0);
INT32 alloc_ret = 0;
INT32 cdev_err = 0;
#if REMOVE_MK_NODE
struct device *stpbt_dev = NULL;
#endif
/*static allocate chrdev */
alloc_ret = register_chrdev_region(dev, 1, BT_DRIVER_NAME);
if (alloc_ret) {
BT_ERR_FUNC("fail to register chrdev\n");
return alloc_ret;
}
cdev_init(&BT_cdev, &BT_fops);
BT_cdev.owner = THIS_MODULE;
cdev_err = cdev_add(&BT_cdev, dev, BT_devs);
if (cdev_err)
goto error;
#if REMOVE_MK_NODE /* mknod replace */
stpbt_class = class_create(THIS_MODULE, "stpbt");
if (IS_ERR(stpbt_class))
goto error;
stpbt_dev = device_create(stpbt_class, NULL, dev, NULL, "stpbt");
if (IS_ERR(stpbt_dev))
goto error;
#endif
BT_INFO_FUNC("%s driver(major %d) installed.\n", BT_DRIVER_NAME, BT_major);
retflag = 0;
mtk_wcn_stp_register_event_cb(BT_TASK_INDX, NULL);
/* init wait queue */
init_waitqueue_head(&(inq));
return 0;
error:
#if REMOVE_MK_NODE
if (!IS_ERR(stpbt_dev))
device_destroy(stpbt_class, dev);
if (!IS_ERR(stpbt_class)) {
class_destroy(stpbt_class);
stpbt_class = NULL;
}
#endif
if (cdev_err == 0)
cdev_del(&BT_cdev);
if (alloc_ret == 0)
unregister_chrdev_region(dev, BT_devs);
return -1;
}
ssize_t BT_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
{
static int chip_reset_count;
INT32 retval = 0;
down(&rd_mtx);
BT_DBG_FUNC("%s: count %zd pos %lld\n", __func__, count, *f_pos);
if (rstflag) {
if (rstflag == 1) { /* Reset start */
retval = -88;
if ((chip_reset_count%500) == 0)
BT_INFO_FUNC("%s: detect whole chip reset start, %d\n", __func__, chip_reset_count);
chip_reset_count++;
} else if (rstflag == 2) { /* Reset end */
retval = -99;
BT_INFO_FUNC("%s: detect whole chip reset end\n", __func__);
chip_reset_count = 0;
}
goto OUT;
}
if (count > BT_BUFFER_SIZE) {
count = BT_BUFFER_SIZE;
BT_ERR_FUNC("%s: count > BT_BUFFER_SIZE\n", __func__);
}
retval = mtk_wcn_stp_receive_data(i_buf, count, BT_TASK_INDX);
while (retval == 0) { /* Got nothing, wait for STP's signal */
/*
* If nonblocking mode, return directly.
* O_NONBLOCK is specified during open()
*/
if (filp->f_flags & O_NONBLOCK) {
BT_DBG_FUNC("Non-blocking BT_read\n");
retval = -EAGAIN;
goto OUT;
}
BT_DBG_FUNC("%s: wait_event 1\n", __func__);
wait_event(BT_wq, flag != 0);
BT_DBG_FUNC("%s: wait_event 2\n", __func__);
flag = 0;
retval = mtk_wcn_stp_receive_data(i_buf, count, BT_TASK_INDX);
BT_DBG_FUNC("%s: mtk_wcn_stp_receive_data returns %d\n", __func__, retval);
}
/* Got something from STP driver */
if (copy_to_user(buf, i_buf, retval)) {
retval = -EFAULT;
goto OUT;
}
OUT:
up(&rd_mtx);
BT_DBG_FUNC("%s: retval = %d\n", __func__, retval);
return retval;
}
static int nvram_read(char *filename, char *buf, ssize_t len, int offset)
{
struct file *fd;
//ssize_t ret;
int retLen = -1;
mm_segment_t old_fs = get_fs();
set_fs(KERNEL_DS);
fd = filp_open(filename, O_WRONLY|O_CREAT, 0644);
if(IS_ERR(fd)) {
BT_ERR_FUNC("failed to open!!\n");
return -1;
}
do{
if ((fd->f_op == NULL) || (fd->f_op->read == NULL))
{
BT_ERR_FUNC("file can not be read!!\n");
break;
}
if (fd->f_pos != offset) {
if (fd->f_op->llseek) {
if(fd->f_op->llseek(fd, offset, 0) != offset) {
BT_ERR_FUNC("[nvram_read] : failed to seek!!\n");
break;
}
} else {
fd->f_pos = offset;
}
}
retLen = fd->f_op->read(fd,
buf,
len,
&fd->f_pos);
}while(false);
filp_close(fd, NULL);
set_fs(old_fs);
return retLen;
}
/* int BT_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) */
long BT_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
INT32 retval = 0;
MTK_WCN_BOOL bRet = MTK_WCN_BOOL_TRUE;
ENUM_WMTHWVER_TYPE_T hw_ver_sym = WMTHWVER_INVALID;
BT_DBG_FUNC("%s: cmd: 0x%x\n", __func__, cmd);
switch (cmd) {
case COMBO_IOC_BT_HWVER:
/* Get combo HW version */
hw_ver_sym = mtk_wcn_wmt_hwver_get();
BT_INFO_FUNC("%s: HW version = %d, sizeof(hw_ver_sym) = %zd\n",
__func__, hw_ver_sym, sizeof(hw_ver_sym));
if (copy_to_user((int __user *)arg, &hw_ver_sym, sizeof(hw_ver_sym)))
retval = -EFAULT;
break;
case COMBO_IOCTL_FW_ASSERT:
/* Trigger FW assert for debug */
BT_INFO_FUNC("%s: Host trigger FW assert......, reason:%lu\n", __func__, arg);
bRet = mtk_wcn_wmt_assert(WMTDRV_TYPE_BT, arg);
if (bRet == MTK_WCN_BOOL_TRUE) {
BT_INFO_FUNC("Host trigger FW assert succeed\n");
retval = 0;
} else {
BT_ERR_FUNC("Host trigger FW assert Failed\n");
retval = (-EBUSY);
}
break;
case COMBO_IOCTL_BT_IC_HW_VER:
retval = mtk_wcn_wmt_ic_info_get(WMTCHIN_HWVER);
break;
case COMBO_IOCTL_BT_IC_FW_VER:
retval = mtk_wcn_wmt_ic_info_get(WMTCHIN_FWVER);
break;
default:
retval = -EFAULT;
BT_ERR_FUNC("Unknown cmd (%d)\n", cmd);
break;
}
return retval;
}
ssize_t BT_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
{
INT32 retval = 0;
down(&rd_mtx);
BT_DBG_FUNC("BT_read(): count %zd pos %lld\n", count, *f_pos);
if (retflag) {
if (retflag == 1) { /* reset start */
retval = -88;
BT_INFO_FUNC("MT662x reset Read: start\n");
} else if (retflag == 2) { /* reset end */
retval = -99;
BT_INFO_FUNC("MT662x reset Read: end\n");
}
goto OUT;
}
if (count > BT_BUFFER_SIZE) {
count = BT_BUFFER_SIZE;
BT_ERR_FUNC(" count > BT_BUFFER_SIZE\n");
}
retval = mtk_wcn_stp_receive_data(i_buf, count, BT_TASK_INDX);
while (retval == 0) { /* got nothing, wait for STP's signal */
/*If nonblocking mode, return directly O_NONBLOCK is specified during open() */
if (filp->f_flags & O_NONBLOCK) {
BT_DBG_FUNC("Non-blocking BT_read()\n");
retval = -EAGAIN;
goto OUT;
}
BT_DBG_FUNC("BT_read(): wait_event 1\n");
wait_event(BT_wq, flag != 0);
BT_DBG_FUNC("BT_read(): wait_event 2\n");
flag = 0;
retval = mtk_wcn_stp_receive_data(i_buf, count, BT_TASK_INDX);
BT_DBG_FUNC("BT_read(): mtk_wcn_stp_receive_data() = %d\n", retval);
}
/* we got something from STP driver */
if (copy_to_user(buf, i_buf, retval)) {
retval = -EFAULT;
goto OUT;
}
OUT:
up(&rd_mtx);
BT_DBG_FUNC("BT_read(): retval = %d\n", retval);
return retval;
}
static int BT_close(struct inode *inode, struct file *file)
{
BT_INFO_FUNC("%s: major %d minor %d pid %d\n", __func__, imajor(inode), iminor(inode), current->pid);
if (current->pid == 1)
return 0;
rstflag = 0;
mtk_wcn_wmt_msgcb_unreg(WMTDRV_TYPE_BT);
mtk_wcn_stp_register_event_cb(BT_TASK_INDX, NULL);
if (MTK_WCN_BOOL_FALSE == mtk_wcn_wmt_func_off(WMTDRV_TYPE_BT)) {
BT_ERR_FUNC("WMT turn off BT fail!\n");
return -EIO; /* Mostly, native program will not check this return value. */
}
BT_INFO_FUNC("WMT turn off BT OK!\n");
return 0;
}
static int BT_open(struct inode *inode, struct file *file)
{
BT_INFO_FUNC("%s: major %d minor %d pid %d\n", __func__, imajor(inode), iminor(inode), current->pid);
if (current->pid == 1)
return 0;
/* Turn on BT */
if (MTK_WCN_BOOL_FALSE == mtk_wcn_wmt_func_on(WMTDRV_TYPE_BT)) {
BT_WARN_FUNC("WMT turn on BT fail!\n");
return -ENODEV;
}
BT_INFO_FUNC("WMT turn on BT OK!\n");
rstflag = 0;
if (mtk_wcn_stp_is_ready()) {
mtk_wcn_stp_set_bluez(0);
BT_INFO_FUNC("Now it's in MTK Bluetooth Mode\n");
BT_INFO_FUNC("STP is ready!\n");
BT_DBG_FUNC("Register BT event callback!\n");
mtk_wcn_stp_register_event_cb(BT_TASK_INDX, BT_event_cb);
} else {
BT_ERR_FUNC("STP is not ready\n");
mtk_wcn_wmt_func_off(WMTDRV_TYPE_BT);
return -ENODEV;
}
BT_DBG_FUNC("Register BT reset callback!\n");
mtk_wcn_wmt_msgcb_reg(WMTDRV_TYPE_BT, bt_cdev_rst_cb);
/* init_MUTEX(&wr_mtx); */
sema_init(&wr_mtx, 1);
/* init_MUTEX(&rd_mtx); */
sema_init(&rd_mtx, 1);
BT_INFO_FUNC("%s: finish\n", __func__);
return 0;
}
static int BT_init(void)
{
dev_t dev = MKDEV(BT_major, 0);
int alloc_ret = 0;
int cdev_err = 0;
/*static allocate chrdev*/
alloc_ret = register_chrdev_region(dev, 1, BT_DRIVER_NAME);
if (alloc_ret) {
BT_ERR_FUNC("fail to register chrdev\n");
return alloc_ret;
}
cdev_init(&BT_cdev, &BT_fops);
BT_cdev.owner = THIS_MODULE;
cdev_err = cdev_add(&BT_cdev, dev, BT_devs);
if (cdev_err)
goto error;
BT_INFO_FUNC("%s driver(major %d) installed.\n",
BT_DRIVER_NAME, BT_major);
retflag = 0;
mtk_wcn_stp_register_event_cb(BT_TASK_INDX, NULL);
/* init wait queue */
init_waitqueue_head(&(inq));
return 0;
error:
if (cdev_err == 0)
cdev_del(&BT_cdev);
if (alloc_ret == 0)
unregister_chrdev_region(dev, BT_devs);
return -1;
}
