/* diagfwd_cancel_hsic is called to cancel outstanding read/writes */
int diagfwd_cancel_hsic(void)
{
int err, i;
/* Cancel it for all active HSIC bridges */
for (i = 0; i < MAX_HSIC_CH; i++) {
if (!diag_bridge[i].enabled)
continue;
mutex_lock(&diag_bridge[i].bridge_mutex);
if (diag_hsic[i].hsic_device_enabled) {
if (diag_hsic[i].hsic_device_opened) {
diag_hsic[i].hsic_ch = 0;
diag_hsic[i].hsic_device_opened = 0;
diag_bridge_close(i);
hsic_diag_bridge_ops[i].ctxt = (void *)(i);
err = diag_bridge_open(i,
&hsic_diag_bridge_ops[i]);
if (err) {
pr_err("diag: HSIC %d channel open error: %d\n",
i, err);
} else {
pr_debug("diag: opened HSIC channel: %d\n",
i);
diag_hsic[i].hsic_device_opened = 1;
diag_hsic[i].hsic_ch = 1;
}
}
}
mutex_unlock(&diag_bridge[i].bridge_mutex);
}
return 0;
}
static int diag_hsic_close(void)
{
// zero_pky.patch by jagadish
/* if zero cfg mode is enabled, dont close the bridge */
if (driver->zero_cfg_mode) {
pr_info("%s sending zero_cfg packet start\n", __func__);
driver->in_busy_hsic_write = 0;
driver->in_busy_hsic_read = 0;
queue_work(driver->diag_hsic_wq, &driver->diag_zero_cfg_hsic_work);
return 0;
}
if (driver->hsic_device_enabled) {
driver->hsic_ch = 0;
if (driver->hsic_device_opened) {
driver->hsic_device_opened = 0;
// zero_pky.patch by jagadish
driver->zero_cfg_packet_lens_index = 0;
driver->zero_cfg_index =0;
diag_bridge_close();
}
pr_debug("DIAG in %s: closed successfully\n", __func__);
} else {
pr_debug("DIAG in %s: already closed\n", __func__);
}
return 0;
}
static int hsic_close(int id)
{
unsigned long flags;
struct diag_hsic_info *ch = NULL;
if (id < 0 || id >= NUM_HSIC_DEV) {
pr_err("diag: Invalid index %d in %s\n", id, __func__);
return -EINVAL;
}
ch = &diag_hsic[id];
if (!ch->enabled)
return -ENODEV;
if (!ch->opened) {
pr_debug("diag: HSIC channel %d is already closed\n", ch->id);
return -ENODEV;
}
spin_lock_irqsave(&ch->lock, flags);
ch->opened = 0;
spin_unlock_irqrestore(&ch->lock, flags);
diag_bridge_close(ch->id);
diagmem_exit(driver, ch->mempool);
diag_remote_dev_close(ch->dev_id);
return 0;
}
int diagfwd_reset_hsic()
{
int i;
int err = 0;
int b_index = 0;
for (i = 0; i < MAX_HSIC_DATA_CH; i++) {
if (!diag_hsic[i].hsic_device_enabled)
continue;
b_index = hsic_data_bridge_map[i];
mutex_lock(&diag_bridge[b_index].bridge_mutex);
diag_hsic[i].hsic_ch = 0;
diag_hsic[i].hsic_device_opened = 0;
diag_hsic[i].hsic_data_requested = 0;
diag_bridge_close(hsic_data_bridge_map[i]);
err = diag_bridge_open(hsic_data_bridge_map[i],
&hsic_diag_bridge_ops[i]);
if (err) {
pr_err("diag: HSIC %d channel open error: %d\n",
i, err);
} else {
pr_debug("diag: opened HSIC channel: %d\n", i);
diag_hsic[i].hsic_device_opened = 1;
diag_hsic[i].hsic_ch = 1;
diag_hsic[i].hsic_data_requested = 1;
}
mutex_unlock(&diag_bridge[b_index].bridge_mutex);
}
return err;
}
static int diag_hsic_close(void)
{
if (driver->hsic_device_enabled) {
driver->hsic_ch = 0;
if (driver->hsic_device_opened) {
driver->hsic_device_opened = 0;
diag_bridge_close();
}
pr_debug("DIAG in %s: closed successfully\n", __func__);
} else {
pr_debug("DIAG in %s: already closed\n", __func__);
}
return 0;
}
void diag_hsic_close(void)
{
if (driver->hsic_device_enabled) {
driver->hsic_ch = 0;
if (driver->hsic_device_opened) {
driver->hsic_device_opened = 0;
diag_bridge_close();
pr_debug("diag: %s: closed successfully\n", __func__);
} else {
pr_debug("diag: %s: already closed\n", __func__);
}
} else {
pr_debug("diag: %s: HSIC device already removed\n", __func__);
}
}
void diag_hsic_close(int ch_id)
{
if (diag_hsic[ch_id].hsic_device_enabled) {
diag_hsic[ch_id].hsic_ch = 0;
if (diag_hsic[ch_id].hsic_device_opened) {
diag_hsic[ch_id].hsic_device_opened = 0;
diag_bridge_close(ch_id);
pr_debug("diag: %s: closed successfully ch %d\n", __func__, ch_id);
} else {
pr_debug("diag: %s: already closed ch %d\n", __func__, ch_id);
}
} else {
pr_debug("diag: %s: HSIC device already removed ch %d\n", __func__, ch_id);
}
}
void diag_hsic_dci_close(int ch_id)
{
if (diag_hsic_dci[ch_id].hsic_device_enabled) {
diag_hsic_dci[ch_id].hsic_ch = 0;
if (diag_hsic_dci[ch_id].hsic_device_opened) {
diag_hsic_dci[ch_id].hsic_device_opened = 0;
diag_bridge_close(hsic_dci_bridge_map[ch_id]);
dci_ops_tbl[DCI_MDM_PROC].peripheral_status = 0;
diag_dci_notify_client(DIAG_CON_APSS,
DIAG_STATUS_CLOSED,
DCI_MDM_PROC);
pr_debug("diag: %s: closed successfully ch %d\n",
__func__, ch_id);
} else {
pr_debug("diag: %s: already closed ch %d\n",
__func__, ch_id);
}
} else {
pr_debug("diag: %s: HSIC device already removed ch %d\n",
__func__, ch_id);
}
}
int diagfwd_cancel_hsic(void)
{
int err;
if (driver->hsic_device_enabled) {
if (driver->hsic_device_opened) {
driver->hsic_ch = 0;
driver->hsic_device_opened = 0;
diag_bridge_close();
err = diag_bridge_open(&hsic_diag_bridge_ops);
if (err) {
pr_err("diag: HSIC channel open error: %d\n",
err);
} else {
pr_debug("diag: opened HSIC channel\n");
driver->hsic_device_opened = 1;
driver->hsic_ch = 1;
}
}
}
return 0;
}
/* diagfwd_cancel_hsic is called to cancel outstanding read/writes */
int diagfwd_cancel_hsic(void)
{
int err;
mutex_lock(&diag_bridge[HSIC].bridge_mutex);
if (driver->hsic_device_enabled) {
if (driver->hsic_device_opened) {
driver->hsic_ch = 0;
driver->hsic_device_opened = 0;
diag_bridge_close(0);
err = diag_bridge_open(0, &hsic_diag_bridge_ops);
if (err) {
pr_err("diag: HSIC channel open error: %d\n",
err);
} else {
pr_debug("diag: opened HSIC channel\n");
driver->hsic_device_opened = 1;
driver->hsic_ch = 1;
}
}
}
mutex_unlock(&diag_bridge[HSIC].bridge_mutex);
return 0;
}
static int diag_hsic_probe_data(int pdev_id)
{
int err = 0;
int index = hsic_map[pdev_id].struct_idx;
int b_index = hsic_map[pdev_id].bridge_idx;
mutex_lock(&diag_bridge[index].bridge_mutex);
if (!diag_hsic[index].hsic_inited) {
spin_lock_init(&diag_hsic[index].hsic_spinlock);
diag_hsic[index].num_hsic_buf_tbl_entries = 0;
if (diag_hsic[index].hsic_buf_tbl == NULL)
diag_hsic[index].hsic_buf_tbl =
kzalloc(NUM_HSIC_BUF_TBL_ENTRIES *
sizeof(struct diag_write_device), GFP_KERNEL);
if (diag_hsic[index].hsic_buf_tbl == NULL) {
mutex_unlock(&diag_bridge[index].bridge_mutex);
return -ENOMEM;
}
diag_hsic[index].id = index;
diag_hsic[index].count_hsic_pool = 0;
diag_hsic[index].count_hsic_write_pool = 0;
diag_hsic[index].itemsize_hsic = READ_HSIC_BUF_SIZE;
diag_hsic[index].poolsize_hsic = N_MDM_WRITE;
diag_hsic[index].itemsize_hsic_write =
sizeof(struct diag_request);
diag_hsic[index].poolsize_hsic_write = N_MDM_WRITE;
diagmem_hsic_init(index);
INIT_WORK(&(diag_hsic[index].diag_read_hsic_work),
diag_read_hsic_work_fn);
diag_hsic[index].hsic_data_requested =
(driver->logging_mode == MEMORY_DEVICE_MODE) ? 0 : 1;
diag_hsic[index].hsic_inited = 1;
}
/*
* The probe function was called after the usb was connected
* on the legacy channel OR ODL is turned on and hsic data is
* requested. Communication over usb mdm and HSIC needs to be
* turned on.
*/
if ((diag_bridge[index].usb_connected &&
(driver->logging_mode != MEMORY_DEVICE_MODE)) ||
((driver->logging_mode == MEMORY_DEVICE_MODE) &&
diag_hsic[index].hsic_data_requested)) {
if (diag_hsic[index].hsic_device_opened) {
/* should not happen. close it before re-opening */
pr_warn("diag: HSIC channel already opened in probe\n");
diag_bridge_close(hsic_data_bridge_map[index]);
}
hsic_diag_bridge_ops[index].ctxt = (void *)(index);
err = diag_bridge_open(b_index,
&hsic_diag_bridge_ops[index]);
if (err) {
pr_err("diag: could not open HSIC, err: %d\n", err);
diag_hsic[index].hsic_device_opened = 0;
mutex_unlock(&diag_bridge[index].bridge_mutex);
return err;
}
pr_info("diag: opened HSIC bridge, ch = %d\n", index);
diag_hsic[index].hsic_device_opened = 1;
diag_hsic[index].hsic_ch = 1;
diag_hsic[index].in_busy_hsic_read_on_device = 0;
diag_hsic[index].in_busy_hsic_write = 0;
if (diag_bridge[index].usb_connected) {
/* Poll USB mdm channel to check for data */
queue_work(diag_bridge[index].wq,
&diag_bridge[index].diag_read_work);
}
/* Poll HSIC channel to check for data */
queue_work(diag_bridge[index].wq,
&diag_hsic[index].diag_read_hsic_work);
}
/* The HSIC (diag_bridge) platform device driver is enabled */
diag_hsic[index].hsic_device_enabled = 1;
mutex_unlock(&diag_bridge[index].bridge_mutex);
return err;
}
static int diag_hsic_probe(struct platform_device *pdev)
{
int err = 0;
pr_debug("diag: in %s\n", __func__);
mutex_lock(&diag_bridge[HSIC].bridge_mutex);
if (!driver->hsic_inited) {
spin_lock_init(&driver->hsic_spinlock);
driver->num_hsic_buf_tbl_entries = 0;
if (driver->hsic_buf_tbl == NULL)
driver->hsic_buf_tbl = kzalloc(NUM_HSIC_BUF_TBL_ENTRIES
* sizeof(struct diag_write_device), GFP_KERNEL);
if (driver->hsic_buf_tbl == NULL) {
mutex_unlock(&diag_bridge[HSIC].bridge_mutex);
return -ENOMEM;
}
driver->count_hsic_pool = 0;
driver->count_hsic_write_pool = 0;
driver->itemsize_hsic = READ_HSIC_BUF_SIZE;
driver->poolsize_hsic = N_MDM_WRITE;
driver->itemsize_hsic_write = sizeof(struct diag_request);
driver->poolsize_hsic_write = N_MDM_WRITE;
diagmem_hsic_init(driver);
INIT_WORK(&(driver->diag_read_hsic_work),
diag_read_hsic_work_fn);
driver->hsic_inited = 1;
}
if (diag_bridge[HSIC].usb_connected || (driver->logging_mode ==
MEMORY_DEVICE_MODE)) {
if (driver->hsic_device_opened) {
pr_warn("diag: HSIC channel already opened in probe\n");
diag_bridge_close();
}
err = diag_bridge_open(&hsic_diag_bridge_ops);
if (err) {
pr_err("diag: could not open HSIC, err: %d\n", err);
driver->hsic_device_opened = 0;
mutex_unlock(&diag_bridge[HSIC].bridge_mutex);
return err;
}
pr_info("diag: opened HSIC channel\n");
driver->hsic_device_opened = 1;
driver->hsic_ch = 1;
driver->in_busy_hsic_read_on_device = 0;
driver->in_busy_hsic_write = 0;
if (diag_bridge[HSIC].usb_connected) {
queue_work(diag_bridge[HSIC].wq,
&diag_bridge[HSIC].diag_read_work);
}
queue_work(diag_bridge[HSIC].wq,
&driver->diag_read_hsic_work);
}
driver->hsic_device_enabled = 1;
mutex_unlock(&diag_bridge[HSIC].bridge_mutex);
return err;
}
static int diag_hsic_probe(struct platform_device *pdev)
{
int err = 0;
/* pdev->Id will indicate which HSIC is working. 0 stands for HSIC
* or CP1 1 indicates HS-USB or CP2
*/
pr_debug("diag: in %s, ch = %d\n", __func__, pdev->id);
mutex_lock(&diag_bridge[pdev->id].bridge_mutex);
if (!diag_hsic[pdev->id].hsic_inited) {
spin_lock_init(&diag_hsic[pdev->id].hsic_spinlock);
diag_hsic[pdev->id].num_hsic_buf_tbl_entries = 0;
if (diag_hsic[pdev->id].hsic_buf_tbl == NULL)
diag_hsic[pdev->id].hsic_buf_tbl =
kzalloc(NUM_HSIC_BUF_TBL_ENTRIES *
sizeof(struct diag_write_device), GFP_KERNEL);
if (diag_hsic[pdev->id].hsic_buf_tbl == NULL) {
mutex_unlock(&diag_bridge[pdev->id].bridge_mutex);
return -ENOMEM;
}
diag_hsic[pdev->id].id = pdev->id;
diag_hsic[pdev->id].count_hsic_pool = 0;
diag_hsic[pdev->id].count_hsic_write_pool = 0;
diag_hsic[pdev->id].itemsize_hsic = READ_HSIC_BUF_SIZE;
diag_hsic[pdev->id].poolsize_hsic = N_MDM_WRITE;
diag_hsic[pdev->id].itemsize_hsic_write =
sizeof(struct diag_request);
diag_hsic[pdev->id].poolsize_hsic_write = N_MDM_WRITE;
diagmem_hsic_init(pdev->id);
INIT_WORK(&(diag_hsic[pdev->id].diag_read_hsic_work),
diag_read_hsic_work_fn);
diag_hsic[pdev->id].hsic_inited = 1;
}
/*
* The probe function was called after the usb was connected
* on the legacy channel OR ODL is turned on. Communication over usb
* mdm and HSIC needs to be turned on.
*/
if (diag_bridge[pdev->id].usb_connected || (driver->logging_mode ==
MEMORY_DEVICE_MODE)) {
if (diag_hsic[pdev->id].hsic_device_opened) {
/* should not happen. close it before re-opening */
pr_warn("diag: HSIC channel already opened in probe\n");
diag_bridge_close(pdev->id);
}
hsic_diag_bridge_ops[pdev->id].ctxt = (void *)(pdev->id);
err = diag_bridge_open(pdev->id,
&hsic_diag_bridge_ops[pdev->id]);
if (err) {
pr_err("diag: could not open HSIC, err: %d\n", err);
diag_hsic[pdev->id].hsic_device_opened = 0;
mutex_unlock(&diag_bridge[pdev->id].bridge_mutex);
return err;
}
pr_info("diag: opened HSIC bridge, ch = %d\n", pdev->id);
diag_hsic[pdev->id].hsic_device_opened = 1;
diag_hsic[pdev->id].hsic_ch = 1;
diag_hsic[pdev->id].in_busy_hsic_read_on_device = 0;
diag_hsic[pdev->id].in_busy_hsic_write = 0;
if (diag_bridge[pdev->id].usb_connected) {
/* Poll USB mdm channel to check for data */
queue_work(diag_bridge[pdev->id].wq,
&diag_bridge[pdev->id].diag_read_work);
}
/* Poll HSIC channel to check for data */
queue_work(diag_bridge[pdev->id].wq,
&diag_hsic[pdev->id].diag_read_hsic_work);
}
/* The HSIC (diag_bridge) platform device driver is enabled */
diag_hsic[pdev->id].hsic_device_enabled = 1;
mutex_unlock(&diag_bridge[pdev->id].bridge_mutex);
return err;
}
