diff options
Diffstat (limited to 'drivers/misc/mei/hw-me.c')
| -rw-r--r-- | drivers/misc/mei/hw-me.c | 66 |
1 files changed, 39 insertions, 27 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 642c6223fa6c..7c2b14d714b9 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -232,6 +232,38 @@ static bool mei_me_hw_is_ready(struct mei_device *dev) return (hw->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA; } +static int mei_me_hw_ready_wait(struct mei_device *dev) +{ + int err; + if (mei_me_hw_is_ready(dev)) + return 0; + + mutex_unlock(&dev->device_lock); + err = wait_event_interruptible_timeout(dev->wait_hw_ready, + dev->recvd_hw_ready, MEI_INTEROP_TIMEOUT); + mutex_lock(&dev->device_lock); + if (!err && !dev->recvd_hw_ready) { + dev_err(&dev->pdev->dev, + "wait hw ready failed. status = 0x%x\n", err); + return -ETIMEDOUT; + } + + dev->recvd_hw_ready = false; + return 0; +} + +static int mei_me_hw_start(struct mei_device *dev) +{ + int ret = mei_me_hw_ready_wait(dev); + if (ret) + return ret; + dev_dbg(&dev->pdev->dev, "hw is ready\n"); + + mei_me_host_set_ready(dev); + return ret; +} + + /** * mei_hbuf_filled_slots - gets number of device filled buffer slots * @@ -305,10 +337,11 @@ static int mei_me_write_message(struct mei_device *dev, unsigned char *buf) { struct mei_me_hw *hw = to_me_hw(dev); - unsigned long rem, dw_cnt; + unsigned long rem; unsigned long length = header->length; u32 *reg_buf = (u32 *)buf; u32 hcsr; + u32 dw_cnt; int i; int empty_slots; @@ -433,8 +466,6 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) { struct mei_device *dev = (struct mei_device *) dev_id; struct mei_cl_cb complete_list; - struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL; - struct mei_cl *cl; s32 slots; int rets; bool bus_message_received; @@ -465,14 +496,9 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) if (mei_hw_is_ready(dev)) { dev_dbg(&dev->pdev->dev, "we need to start the dev.\n"); - mei_host_set_ready(dev); - - dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n"); - /* link is established * start sending messages. */ + dev->recvd_hw_ready = true; + wake_up_interruptible(&dev->wait_hw_ready); - dev->dev_state = MEI_DEV_INIT_CLIENTS; - - mei_hbm_start_req(dev); mutex_unlock(&dev->device_lock); return IRQ_HANDLED; } else { @@ -510,33 +536,19 @@ end: wake_up_interruptible(&dev->wait_recvd_msg); bus_message_received = false; } - if (list_empty(&complete_list.list)) - return IRQ_HANDLED; + mei_irq_compl_handler(dev, &complete_list); - list_for_each_entry_safe(cb_pos, cb_next, &complete_list.list, list) { - cl = cb_pos->cl; - list_del(&cb_pos->list); - if (cl) { - if (cl != &dev->iamthif_cl) { - dev_dbg(&dev->pdev->dev, "completing call back.\n"); - mei_irq_complete_handler(cl, cb_pos); - cb_pos = NULL; - } else if (cl == &dev->iamthif_cl) { - mei_amthif_complete(dev, cb_pos); - } - } - } return IRQ_HANDLED; } static const struct mei_hw_ops mei_me_hw_ops = { - .host_set_ready = mei_me_host_set_ready, .host_is_ready = mei_me_host_is_ready, .hw_is_ready = mei_me_hw_is_ready, .hw_reset = mei_me_hw_reset, - .hw_config = mei_me_hw_config, + .hw_config = mei_me_hw_config, + .hw_start = mei_me_hw_start, .intr_clear = mei_me_intr_clear, .intr_enable = mei_me_intr_enable, |