diff options
Diffstat (limited to 'drivers/hid/intel-ish-hid/ishtp/client.c')
| -rw-r--r-- | drivers/hid/intel-ish-hid/ishtp/client.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/hid/intel-ish-hid/ishtp/client.c b/drivers/hid/intel-ish-hid/ishtp/client.c index 007443ef5fca..faeccdb1475b 100644 --- a/drivers/hid/intel-ish-hid/ishtp/client.c +++ b/drivers/hid/intel-ish-hid/ishtp/client.c @@ -22,6 +22,25 @@ #include "hbm.h" #include "client.h" +int ishtp_cl_get_tx_free_buffer_size(struct ishtp_cl *cl) +{ + unsigned long tx_free_flags; + int size; + + spin_lock_irqsave(&cl->tx_free_list_spinlock, tx_free_flags); + size = cl->tx_ring_free_size * cl->device->fw_client->props.max_msg_length; + spin_unlock_irqrestore(&cl->tx_free_list_spinlock, tx_free_flags); + + return size; +} +EXPORT_SYMBOL(ishtp_cl_get_tx_free_buffer_size); + +int ishtp_cl_get_tx_free_rings(struct ishtp_cl *cl) +{ + return cl->tx_ring_free_size; +} +EXPORT_SYMBOL(ishtp_cl_get_tx_free_rings); + /** * ishtp_read_list_flush() - Flush read queue * @cl: ishtp client instance @@ -90,6 +109,7 @@ static void ishtp_cl_init(struct ishtp_cl *cl, struct ishtp_device *dev) cl->rx_ring_size = CL_DEF_RX_RING_SIZE; cl->tx_ring_size = CL_DEF_TX_RING_SIZE; + cl->tx_ring_free_size = cl->tx_ring_size; /* dma */ cl->last_tx_path = CL_TX_PATH_IPC; @@ -577,6 +597,8 @@ int ishtp_cl_send(struct ishtp_cl *cl, uint8_t *buf, size_t length) * max ISHTP message size per client */ list_del_init(&cl_msg->list); + --cl->tx_ring_free_size; + spin_unlock_irqrestore(&cl->tx_free_list_spinlock, tx_free_flags); memcpy(cl_msg->send_buf.data, buf, length); cl_msg->send_buf.size = length; @@ -685,6 +707,7 @@ static void ipc_tx_callback(void *prm) ishtp_write_message(dev, &ishtp_hdr, pmsg); spin_lock_irqsave(&cl->tx_free_list_spinlock, tx_free_flags); list_add_tail(&cl_msg->list, &cl->tx_free_list.list); + ++cl->tx_ring_free_size; spin_unlock_irqrestore(&cl->tx_free_list_spinlock, tx_free_flags); } else { @@ -778,6 +801,7 @@ static void ishtp_cl_send_msg_dma(struct ishtp_device *dev, ishtp_write_message(dev, &hdr, (unsigned char *)&dma_xfer); spin_lock_irqsave(&cl->tx_free_list_spinlock, tx_free_flags); list_add_tail(&cl_msg->list, &cl->tx_free_list.list); + ++cl->tx_ring_free_size; spin_unlock_irqrestore(&cl->tx_free_list_spinlock, tx_free_flags); ++cl->send_msg_cnt_dma; } |