diff options
author | Sujeev Dias <sdias@codeaurora.org> | 2016-11-29 18:02:23 -0800 |
---|---|---|
committer | Sujeev Dias <sdias@codeaurora.org> | 2017-03-11 12:02:02 -0800 |
commit | 75edc331a7bc105e5382f606d074f92b8d0a838c (patch) | |
tree | 84d9abc4762d1e74729bbfed26e8af0d78de195c /drivers/platform | |
parent | 6f370e6a8be6cf4cd01b9a3748fecb7a31924d57 (diff) |
mhi: core: add support for MHI to operate on slave mode
MHI host is not always the bus master. Add support to
operate on slave mode.
CRs-Fixed: 1095436
Change-Id: I4af92c8171cf9ba38267afa753cec33f291d55eb
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Diffstat (limited to 'drivers/platform')
-rw-r--r-- | drivers/platform/msm/mhi/mhi.h | 10 | ||||
-rw-r--r-- | drivers/platform/msm/mhi/mhi_iface.c | 6 | ||||
-rw-r--r-- | drivers/platform/msm/mhi/mhi_main.c | 129 | ||||
-rw-r--r-- | drivers/platform/msm/mhi/mhi_pm.c | 221 | ||||
-rw-r--r-- | drivers/platform/msm/mhi/mhi_states.c | 1 |
5 files changed, 319 insertions, 48 deletions
diff --git a/drivers/platform/msm/mhi/mhi.h b/drivers/platform/msm/mhi/mhi.h index 412e776b9a7b..ea724996cf11 100644 --- a/drivers/platform/msm/mhi/mhi.h +++ b/drivers/platform/msm/mhi/mhi.h @@ -580,11 +580,15 @@ struct mhi_device_ctxt { void *mhi_ipc_log; /* Shadow functions since not all device supports runtime pm */ + int (*bus_master_rt_get)(struct pci_dev *pci_dev); + void (*bus_master_rt_put)(struct pci_dev *pci_dev); void (*runtime_get)(struct mhi_device_ctxt *mhi_dev_ctxt); void (*runtime_put)(struct mhi_device_ctxt *mhi_dev_ctxt); void (*assert_wake)(struct mhi_device_ctxt *mhi_dev_ctxt, bool force_set); void (*deassert_wake)(struct mhi_device_ctxt *mhi_dev_ctxt); + + struct completion cmd_complete; }; struct mhi_device_driver { @@ -687,8 +691,10 @@ void mhi_notify_clients(struct mhi_device_ctxt *mhi_dev_ctxt, enum MHI_CB_REASON reason); void mhi_notify_client(struct mhi_client_handle *client_handle, enum MHI_CB_REASON reason); -void mhi_runtime_get(struct mhi_device_ctxt *mhi_dev_ctxt); -void mhi_runtime_put(struct mhi_device_ctxt *mhi_dev_ctxt); +void mhi_master_mode_runtime_get(struct mhi_device_ctxt *mhi_dev_ctxt); +void mhi_master_mode_runtime_put(struct mhi_device_ctxt *mhi_dev_ctxt); +void mhi_slave_mode_runtime_get(struct mhi_device_ctxt *mhi_dev_ctxt); +void mhi_slave_mode_runtime_put(struct mhi_device_ctxt *mhi_dev_ctxt); void mhi_deassert_device_wake(struct mhi_device_ctxt *mhi_dev_ctxt); void mhi_assert_device_wake(struct mhi_device_ctxt *mhi_dev_ctxt, bool force_set); diff --git a/drivers/platform/msm/mhi/mhi_iface.c b/drivers/platform/msm/mhi/mhi_iface.c index 6bb26430be7b..1fa32d435469 100644 --- a/drivers/platform/msm/mhi/mhi_iface.c +++ b/drivers/platform/msm/mhi/mhi_iface.c @@ -196,7 +196,7 @@ static int mhi_pci_probe(struct pci_dev *pcie_device, tasklet_init(&mhi_dev_ctxt->ev_task, mhi_ctrl_ev_task, (unsigned long)mhi_dev_ctxt); - + init_completion(&mhi_dev_ctxt->cmd_complete); mhi_dev_ctxt->flags.link_up = 1; /* Setup bus scale */ @@ -277,8 +277,8 @@ static int mhi_pci_probe(struct pci_dev *pcie_device, /* setup shadow pm functions */ mhi_dev_ctxt->assert_wake = mhi_assert_device_wake; mhi_dev_ctxt->deassert_wake = mhi_deassert_device_wake; - mhi_dev_ctxt->runtime_get = mhi_runtime_get; - mhi_dev_ctxt->runtime_put = mhi_runtime_put; + mhi_dev_ctxt->runtime_get = mhi_master_mode_runtime_get; + mhi_dev_ctxt->runtime_put = mhi_master_mode_runtime_put; mutex_lock(&mhi_dev_ctxt->pm_lock); write_lock_irq(&mhi_dev_ctxt->pm_xfer_lock); diff --git a/drivers/platform/msm/mhi/mhi_main.c b/drivers/platform/msm/mhi/mhi_main.c index 6f6658b9602c..1ce477966b77 100644 --- a/drivers/platform/msm/mhi/mhi_main.c +++ b/drivers/platform/msm/mhi/mhi_main.c @@ -27,6 +27,7 @@ #include "mhi.h" #include "mhi_hwio.h" #include "mhi_macros.h" +#include "mhi_bhi.h" #include "mhi_trace.h" static int reset_chan_cmd(struct mhi_device_ctxt *mhi_dev_ctxt, @@ -1560,17 +1561,27 @@ int mhi_get_epid(struct mhi_client_handle *client_handle) return MHI_EPID; } -void mhi_runtime_get(struct mhi_device_ctxt *mhi_dev_ctxt) +void mhi_master_mode_runtime_get(struct mhi_device_ctxt *mhi_dev_ctxt) { pm_runtime_get(&mhi_dev_ctxt->pcie_device->dev); } -void mhi_runtime_put(struct mhi_device_ctxt *mhi_dev_ctxt) +void mhi_master_mode_runtime_put(struct mhi_device_ctxt *mhi_dev_ctxt) { pm_runtime_mark_last_busy(&mhi_dev_ctxt->pcie_device->dev); pm_runtime_put_noidle(&mhi_dev_ctxt->pcie_device->dev); } +void mhi_slave_mode_runtime_get(struct mhi_device_ctxt *mhi_dev_ctxt) +{ + mhi_dev_ctxt->bus_master_rt_get(mhi_dev_ctxt->pcie_device); +} + +void mhi_slave_mode_runtime_put(struct mhi_device_ctxt *mhi_dev_ctxt) +{ + mhi_dev_ctxt->bus_master_rt_put(mhi_dev_ctxt->pcie_device); +} + /* * mhi_assert_device_wake - Set WAKE_DB register * force_set - if true, will set bit regardless of counts @@ -1675,6 +1686,120 @@ int mhi_deregister_channel(struct mhi_client_handle *client_handle) } EXPORT_SYMBOL(mhi_deregister_channel); +int mhi_register_device(struct mhi_device *mhi_device, + const char *node_name, + unsigned long user_data) +{ + const struct device_node *of_node; + struct mhi_device_ctxt *mhi_dev_ctxt = NULL, *itr; + struct pcie_core_info *core_info; + struct pci_dev *pci_dev = mhi_device->pci_dev; + u32 domain = pci_domain_nr(pci_dev->bus); + u32 bus = pci_dev->bus->number; + u32 dev_id = pci_dev->device; + u32 slot = PCI_SLOT(pci_dev->devfn); + int ret, i; + + of_node = of_parse_phandle(mhi_device->dev->of_node, node_name, 0); + if (!of_node) + return -EINVAL; + + if (!mhi_device_drv) + return -EPROBE_DEFER; + + /* Traverse thru the list */ + mutex_lock(&mhi_device_drv->lock); + list_for_each_entry(itr, &mhi_device_drv->head, node) { + struct platform_device *pdev = itr->plat_dev; + struct pcie_core_info *core = &itr->core; + + if (pdev->dev.of_node == of_node && + core->domain == domain && + core->bus == bus && + core->dev_id == dev_id && + core->slot == slot) { + mhi_dev_ctxt = itr; + break; + } + } + mutex_unlock(&mhi_device_drv->lock); + + /* perhaps we've not probed yet */ + if (!mhi_dev_ctxt) + return -EPROBE_DEFER; + + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, + "Registering Domain:%02u Bus:%04u dev:0x%04x slot:%04u\n", + domain, bus, dev_id, slot); + + /* Set up pcie dev info */ + mhi_dev_ctxt->pcie_device = pci_dev; + mhi_dev_ctxt->mhi_pm_state = MHI_PM_DISABLE; + INIT_WORK(&mhi_dev_ctxt->process_m1_worker, process_m1_transition); + mutex_init(&mhi_dev_ctxt->pm_lock); + rwlock_init(&mhi_dev_ctxt->pm_xfer_lock); + spin_lock_init(&mhi_dev_ctxt->dev_wake_lock); + tasklet_init(&mhi_dev_ctxt->ev_task, mhi_ctrl_ev_task, + (unsigned long)mhi_dev_ctxt); + init_completion(&mhi_dev_ctxt->cmd_complete); + mhi_dev_ctxt->flags.link_up = 1; + core_info = &mhi_dev_ctxt->core; + core_info->manufact_id = pci_dev->vendor; + core_info->pci_master = false; + + /* Go thru resources and set up */ + for (i = 0; i < ARRAY_SIZE(mhi_device->resources); i++) { + const struct resource *res = &mhi_device->resources[i]; + + switch (resource_type(res)) { + case IORESOURCE_MEM: + /* bus master already mapped it */ + core_info->bar0_base = (void __iomem *)res->start; + core_info->bar0_end = (void __iomem *)res->end; + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, + "bar mapped to:0x%llx - 0x%llx (virtual)\n", + res->start, res->end); + break; + case IORESOURCE_IRQ: + core_info->irq_base = (u32)res->start; + core_info->max_nr_msis = (u32)resource_size(res); + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, + "irq mapped to: %u size:%u\n", + core_info->irq_base, + core_info->max_nr_msis); + break; + }; + } + + if (!core_info->bar0_base || !core_info->irq_base) + return -EINVAL; + + mhi_dev_ctxt->bus_master_rt_get = mhi_device->pm_runtime_get; + mhi_dev_ctxt->bus_master_rt_put = mhi_device->pm_runtime_noidle; + if (!mhi_dev_ctxt->bus_master_rt_get || + !mhi_dev_ctxt->bus_master_rt_put) + return -EINVAL; + + ret = mhi_ctxt_init(mhi_dev_ctxt); + if (ret) { + mhi_log(mhi_dev_ctxt, MHI_MSG_ERROR, + "MHI Initialization failed, ret %d\n", ret); + return ret; + } + mhi_init_debugfs(mhi_dev_ctxt); + + /* setup shadow pm functions */ + mhi_dev_ctxt->assert_wake = mhi_assert_device_wake; + mhi_dev_ctxt->deassert_wake = mhi_deassert_device_wake; + mhi_dev_ctxt->runtime_get = mhi_slave_mode_runtime_get; + mhi_dev_ctxt->runtime_put = mhi_slave_mode_runtime_put; + mhi_device->mhi_dev_ctxt = mhi_dev_ctxt; + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Exit success\n"); + + return 0; +} +EXPORT_SYMBOL(mhi_register_device); + void mhi_process_db_brstmode(struct mhi_device_ctxt *mhi_dev_ctxt, void __iomem *io_addr, uintptr_t chan, diff --git a/drivers/platform/msm/mhi/mhi_pm.c b/drivers/platform/msm/mhi/mhi_pm.c index b88f90759f8a..d7a4f7aa93ef 100644 --- a/drivers/platform/msm/mhi/mhi_pm.c +++ b/drivers/platform/msm/mhi/mhi_pm.c @@ -20,6 +20,7 @@ #include "mhi_sys.h" #include "mhi.h" #include "mhi_hwio.h" +#include "mhi_bhi.h" /* Write only sysfs attributes */ static DEVICE_ATTR(MHI_M0, S_IWUSR, NULL, sysfs_init_m0); @@ -57,14 +58,12 @@ int mhi_pci_suspend(struct device *dev) return r; } -int mhi_runtime_suspend(struct device *dev) +static int mhi_pm_initiate_m3(struct mhi_device_ctxt *mhi_dev_ctxt, + bool force_m3) { int r = 0; - struct mhi_device_ctxt *mhi_dev_ctxt = dev_get_drvdata(dev); - mutex_lock(&mhi_dev_ctxt->pm_lock); read_lock_bh(&mhi_dev_ctxt->pm_xfer_lock); - mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Entered with State:0x%x %s\n", mhi_dev_ctxt->mhi_pm_state, @@ -74,17 +73,16 @@ int mhi_runtime_suspend(struct device *dev) if (mhi_dev_ctxt->mhi_pm_state == MHI_PM_DISABLE || mhi_dev_ctxt->mhi_pm_state == MHI_PM_M3) { mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, - "Already in active state, exiting\n"); + "Already in M3 State\n"); read_unlock_bh(&mhi_dev_ctxt->pm_xfer_lock); - mutex_unlock(&mhi_dev_ctxt->pm_lock); return 0; } - if (unlikely(atomic_read(&mhi_dev_ctxt->counters.device_wake))) { + if (unlikely(atomic_read(&mhi_dev_ctxt->counters.device_wake) && + force_m3 == false)){ mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, - "Busy, Aborting Runtime Suspend\n"); + "Busy, Aborting M3\n"); read_unlock_bh(&mhi_dev_ctxt->pm_xfer_lock); - mutex_unlock(&mhi_dev_ctxt->pm_lock); return -EBUSY; } @@ -98,8 +96,7 @@ int mhi_runtime_suspend(struct device *dev) mhi_log(mhi_dev_ctxt, MHI_MSG_CRITICAL, "Failed to get M0||M1 event, timeout, current state:%s\n", TO_MHI_STATE_STR(mhi_dev_ctxt->mhi_state)); - r = -EIO; - goto rpm_suspend_exit; + return -EIO; } mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Allowing M3 State\n"); @@ -116,20 +113,66 @@ int mhi_runtime_suspend(struct device *dev) mhi_log(mhi_dev_ctxt, MHI_MSG_CRITICAL, "Failed to get M3 event, timeout, current state:%s\n", TO_MHI_STATE_STR(mhi_dev_ctxt->mhi_state)); - r = -EIO; - goto rpm_suspend_exit; + return -EIO; } + return 0; +} + +static int mhi_pm_initiate_m0(struct mhi_device_ctxt *mhi_dev_ctxt) +{ + int r; + + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, + "Entered with State:0x%x %s\n", + mhi_dev_ctxt->mhi_pm_state, + TO_MHI_STATE_STR(mhi_dev_ctxt->mhi_state)); + + write_lock_irq(&mhi_dev_ctxt->pm_xfer_lock); + mhi_dev_ctxt->mhi_pm_state = MHI_PM_M3_EXIT; + write_unlock_irq(&mhi_dev_ctxt->pm_xfer_lock); + + /* Set and wait for M0 Event */ + write_lock_irq(&mhi_dev_ctxt->pm_xfer_lock); + mhi_set_m_state(mhi_dev_ctxt, MHI_STATE_M0); + write_unlock_irq(&mhi_dev_ctxt->pm_xfer_lock); + r = wait_event_timeout(*mhi_dev_ctxt->mhi_ev_wq.m0_event, + mhi_dev_ctxt->mhi_state == MHI_STATE_M0 || + mhi_dev_ctxt->mhi_state == MHI_STATE_M1, + msecs_to_jiffies(MHI_MAX_RESUME_TIMEOUT)); + if (!r) { + mhi_log(mhi_dev_ctxt, MHI_MSG_ERROR, + "Failed to get M0 event, timeout\n"); + r = -EIO; + } else + r = 0; + + return r; +} + +int mhi_runtime_suspend(struct device *dev) +{ + int r = 0; + struct mhi_device_ctxt *mhi_dev_ctxt = dev_get_drvdata(dev); + + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Enter\n"); + + mutex_lock(&mhi_dev_ctxt->pm_lock); + r = mhi_pm_initiate_m3(mhi_dev_ctxt, false); + if (r) { + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "abort due to ret:%d\n", r); + mutex_unlock(&mhi_dev_ctxt->pm_lock); + return r; + } r = mhi_turn_off_pcie_link(mhi_dev_ctxt); if (r) { mhi_log(mhi_dev_ctxt, MHI_MSG_ERROR, - "Failed to Turn off link ret:%d\n", - r); + "Failed to Turn off link ret:%d\n", r); } -rpm_suspend_exit: - mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Exited\n"); mutex_unlock(&mhi_dev_ctxt->pm_lock); + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Exited with ret:%d\n", r); + return r; } @@ -167,32 +210,10 @@ int mhi_runtime_resume(struct device *dev) /* turn on link */ r = mhi_turn_on_pcie_link(mhi_dev_ctxt); - if (r) { - mhi_log(mhi_dev_ctxt, MHI_MSG_CRITICAL, - "Failed to resume link\n"); - goto rpm_resume_exit; - } - - write_lock_irq(&mhi_dev_ctxt->pm_xfer_lock); - mhi_dev_ctxt->mhi_pm_state = MHI_PM_M3_EXIT; - write_unlock_irq(&mhi_dev_ctxt->pm_xfer_lock); - - /* Set and wait for M0 Event */ - write_lock_irq(&mhi_dev_ctxt->pm_xfer_lock); - mhi_set_m_state(mhi_dev_ctxt, MHI_STATE_M0); - write_unlock_irq(&mhi_dev_ctxt->pm_xfer_lock); - r = wait_event_timeout(*mhi_dev_ctxt->mhi_ev_wq.m0_event, - mhi_dev_ctxt->mhi_state == MHI_STATE_M0 || - mhi_dev_ctxt->mhi_state == MHI_STATE_M1, - msecs_to_jiffies(MHI_MAX_RESUME_TIMEOUT)); - if (!r) { - mhi_log(mhi_dev_ctxt, MHI_MSG_ERROR, - "Failed to get M0 event, timeout\n"); - r = -EIO; + if (r) goto rpm_resume_exit; - } - r = 0; /* no errors */ + r = mhi_pm_initiate_m0(mhi_dev_ctxt); rpm_resume_exit: mutex_unlock(&mhi_dev_ctxt->pm_lock); mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Exited with :%d\n", r); @@ -216,6 +237,97 @@ int mhi_pci_resume(struct device *dev) return r; } +static int mhi_pm_slave_mode_power_on(struct mhi_device_ctxt *mhi_dev_ctxt) +{ + int ret_val; + u32 timeout = mhi_dev_ctxt->poll_reset_timeout_ms; + + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Entered\n"); + mutex_lock(&mhi_dev_ctxt->pm_lock); + write_lock_irq(&mhi_dev_ctxt->pm_xfer_lock); + mhi_dev_ctxt->mhi_pm_state = MHI_PM_POR; + ret_val = set_mhi_base_state(mhi_dev_ctxt); + write_unlock_irq(&mhi_dev_ctxt->pm_xfer_lock); + + if (ret_val) { + mhi_log(mhi_dev_ctxt, MHI_MSG_ERROR, + "Error Setting MHI Base State %d\n", ret_val); + goto unlock_pm_lock; + } + + if (mhi_dev_ctxt->base_state != STATE_TRANSITION_BHI) { + ret_val = -EIO; + mhi_log(mhi_dev_ctxt, MHI_MSG_ERROR, + "Invalid Base State, cur_state:%s\n", + state_transition_str(mhi_dev_ctxt->base_state)); + goto unlock_pm_lock; + } + + reinit_completion(&mhi_dev_ctxt->cmd_complete); + init_mhi_base_state(mhi_dev_ctxt); + + /* + * Keep wake in Active until AMSS, @ AMSS we will + * decrement counts + */ + read_lock_irq(&mhi_dev_ctxt->pm_xfer_lock); + mhi_dev_ctxt->assert_wake(mhi_dev_ctxt, false); + read_unlock_irq(&mhi_dev_ctxt->pm_xfer_lock); + + ret_val = wait_for_completion_timeout(&mhi_dev_ctxt->cmd_complete, + msecs_to_jiffies(timeout)); + if (!ret_val || mhi_dev_ctxt->dev_exec_env != MHI_EXEC_ENV_AMSS) + ret_val = -EIO; + else + ret_val = 0; + + if (ret_val) { + read_lock_irq(&mhi_dev_ctxt->pm_xfer_lock); + mhi_dev_ctxt->deassert_wake(mhi_dev_ctxt); + read_unlock_irq(&mhi_dev_ctxt->pm_xfer_lock); + } + +unlock_pm_lock: + + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Exit with ret:%d\n", ret_val); + mutex_unlock(&mhi_dev_ctxt->pm_lock); + return ret_val; +} + +static int mhi_pm_slave_mode_suspend(struct mhi_device_ctxt *mhi_dev_ctxt) +{ + int r; + + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Entered\n"); + mutex_lock(&mhi_dev_ctxt->pm_lock); + + r = mhi_pm_initiate_m3(mhi_dev_ctxt, false); + if (r) + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "abort due to ret:%d\n", r); + mutex_unlock(&mhi_dev_ctxt->pm_lock); + + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Exit with ret:%d\n", r); + + return r; +} + +static int mhi_pm_slave_mode_resume(struct mhi_device_ctxt *mhi_dev_ctxt) +{ + int r; + + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Entered\n"); + mutex_lock(&mhi_dev_ctxt->pm_lock); + + r = mhi_pm_initiate_m0(mhi_dev_ctxt); + if (r) + mhi_log(mhi_dev_ctxt, MHI_MSG_ERROR, + "M3 exit failed ret:%d\n", r); + mutex_unlock(&mhi_dev_ctxt->pm_lock); + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Exit with ret:%d\n", r); + + return r; +} + int mhi_init_pm_sysfs(struct device *dev) { return sysfs_create_group(&dev->kobj, &mhi_attribute_group); @@ -344,3 +456,30 @@ exit: mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, "Exited...\n"); return r; } + +int mhi_pm_control_device(struct mhi_device *mhi_device, + enum mhi_dev_ctrl ctrl) +{ + struct mhi_device_ctxt *mhi_dev_ctxt = mhi_device->mhi_dev_ctxt; + + if (!mhi_dev_ctxt) + return -EINVAL; + + mhi_log(mhi_dev_ctxt, MHI_MSG_INFO, + "Entered with cmd:%d\n", ctrl); + + switch (ctrl) { + case MHI_DEV_CTRL_INIT: + return bhi_probe(mhi_dev_ctxt); + case MHI_DEV_CTRL_POWER_ON: + return mhi_pm_slave_mode_power_on(mhi_dev_ctxt); + case MHI_DEV_CTRL_SUSPEND: + return mhi_pm_slave_mode_suspend(mhi_dev_ctxt); + case MHI_DEV_CTRL_RESUME: + return mhi_pm_slave_mode_resume(mhi_dev_ctxt); + default: + break; + } + return -EINVAL; +} +EXPORT_SYMBOL(mhi_pm_control_device); diff --git a/drivers/platform/msm/mhi/mhi_states.c b/drivers/platform/msm/mhi/mhi_states.c index f73ed37b8591..707c5b3b7dbc 100644 --- a/drivers/platform/msm/mhi/mhi_states.c +++ b/drivers/platform/msm/mhi/mhi_states.c @@ -524,6 +524,7 @@ static int process_amss_transition( read_lock_bh(&mhi_dev_ctxt->pm_xfer_lock); ring_all_ev_dbs(mhi_dev_ctxt); read_unlock_bh(&mhi_dev_ctxt->pm_xfer_lock); + complete(&mhi_dev_ctxt->cmd_complete); /* * runtime_allow will decrement usage_count, counts were |