| Message ID | 1620072038-36160-1-git-send-email-bbhatt@codeaurora.org |
|---|---|
| State | Accepted |
| Commit | 61106bd2a8e4f02dacfbdf147c641b378a4c3de5 |
| Headers | show |
| Series | [v2] bus: mhi: core: Improve debug messages for power up | expand |
On Mon, May 03, 2021 at 01:00:38PM -0700, Bhaumik Bhatt wrote: > Improve error message to be more descriptive if a failure occurs > with an invalid power up execution environment. Additionally, add > a debug log to print the execution environment and MHI state > before a power up is attempted to confirm if the device is in an > expected state. This helps clarify reasons for power up failures > such as the device being found in a PBL or Emergency Download > Mode execution environment and the host expected a full power up > with Pass-Through and no image loading involved. > > Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org> > --- Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Thanks, Mani > v2: Use power up instead of power on and update commit text with an example. > > drivers/bus/mhi/core/pm.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c > index adf426c..f4a8b9a 100644 > --- a/drivers/bus/mhi/core/pm.c > +++ b/drivers/bus/mhi/core/pm.c > @@ -1076,12 +1076,16 @@ int mhi_async_power_up(struct mhi_controller *mhi_cntrl) > > /* Confirm that the device is in valid exec env */ > if (!MHI_IN_PBL(current_ee) && current_ee != MHI_EE_AMSS) { > - dev_err(dev, "Not a valid EE for power on\n"); > + dev_err(dev, "%s is not a valid EE for power on\n", > + TO_MHI_EXEC_STR(current_ee)); > ret = -EIO; > goto error_async_power_up; > } > > state = mhi_get_mhi_state(mhi_cntrl); > + dev_dbg(dev, "Attempting power on with EE: %s, state: %s\n", > + TO_MHI_EXEC_STR(current_ee), TO_MHI_STATE_STR(state)); > + > if (state == MHI_STATE_SYS_ERR) { > mhi_set_mhi_state(mhi_cntrl, MHI_STATE_RESET); > ret = wait_event_timeout(mhi_cntrl->state_event, > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
On Mon, May 03, 2021 at 01:00:38PM -0700, Bhaumik Bhatt wrote: > Improve error message to be more descriptive if a failure occurs > with an invalid power up execution environment. Additionally, add > a debug log to print the execution environment and MHI state > before a power up is attempted to confirm if the device is in an > expected state. This helps clarify reasons for power up failures > such as the device being found in a PBL or Emergency Download > Mode execution environment and the host expected a full power up > with Pass-Through and no image loading involved. > > Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org> Applied to mhi-next! Thanks, Mani > --- > v2: Use power up instead of power on and update commit text with an example. > > drivers/bus/mhi/core/pm.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c > index adf426c..f4a8b9a 100644 > --- a/drivers/bus/mhi/core/pm.c > +++ b/drivers/bus/mhi/core/pm.c > @@ -1076,12 +1076,16 @@ int mhi_async_power_up(struct mhi_controller *mhi_cntrl) > > /* Confirm that the device is in valid exec env */ > if (!MHI_IN_PBL(current_ee) && current_ee != MHI_EE_AMSS) { > - dev_err(dev, "Not a valid EE for power on\n"); > + dev_err(dev, "%s is not a valid EE for power on\n", > + TO_MHI_EXEC_STR(current_ee)); > ret = -EIO; > goto error_async_power_up; > } > > state = mhi_get_mhi_state(mhi_cntrl); > + dev_dbg(dev, "Attempting power on with EE: %s, state: %s\n", > + TO_MHI_EXEC_STR(current_ee), TO_MHI_STATE_STR(state)); > + > if (state == MHI_STATE_SYS_ERR) { > mhi_set_mhi_state(mhi_cntrl, MHI_STATE_RESET); > ret = wait_event_timeout(mhi_cntrl->state_event, > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c index adf426c..f4a8b9a 100644 --- a/drivers/bus/mhi/core/pm.c +++ b/drivers/bus/mhi/core/pm.c @@ -1076,12 +1076,16 @@ int mhi_async_power_up(struct mhi_controller *mhi_cntrl) /* Confirm that the device is in valid exec env */ if (!MHI_IN_PBL(current_ee) && current_ee != MHI_EE_AMSS) { - dev_err(dev, "Not a valid EE for power on\n"); + dev_err(dev, "%s is not a valid EE for power on\n", + TO_MHI_EXEC_STR(current_ee)); ret = -EIO; goto error_async_power_up; } state = mhi_get_mhi_state(mhi_cntrl); + dev_dbg(dev, "Attempting power on with EE: %s, state: %s\n", + TO_MHI_EXEC_STR(current_ee), TO_MHI_STATE_STR(state)); + if (state == MHI_STATE_SYS_ERR) { mhi_set_mhi_state(mhi_cntrl, MHI_STATE_RESET); ret = wait_event_timeout(mhi_cntrl->state_event,
Improve error message to be more descriptive if a failure occurs with an invalid power up execution environment. Additionally, add a debug log to print the execution environment and MHI state before a power up is attempted to confirm if the device is in an expected state. This helps clarify reasons for power up failures such as the device being found in a PBL or Emergency Download Mode execution environment and the host expected a full power up with Pass-Through and no image loading involved. Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org> --- v2: Use power up instead of power on and update commit text with an example. drivers/bus/mhi/core/pm.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)