diff options
| author |   Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> | 2020-02-20 15:28:48 +0530 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-19 07:41:05 +0100 |
| commit | 1d3173a3bae7039b765a0956e3e4bf846dbaacb8 (patch) | |
| tree | c58571d93d2b0dab10741dac62978088846ebda1 /drivers/bus/mhi/core/internal.h | |
| parent | bus: mhi: core: Add support for downloading RDDM image during panic (diff) | |
| download | wireguard-linux-1d3173a3bae7039b765a0956e3e4bf846dbaacb8.tar.xz wireguard-linux-1d3173a3bae7039b765a0956e3e4bf846dbaacb8.zip | |
bus: mhi: core: Add support for processing events from client device
This commit adds support for processing the MHI data and control
events from the client device. The client device can report various
events such as EE events, state change events by interrupting the
host through IRQ and adding events to the event rings allocated by
the host during initialization.
This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/988
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[mani: splitted the data transfer patch and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Link: https://lore.kernel.org/r/20200220095854.4804-11-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/bus/mhi/core/internal.h')
| -rw-r--r-- | drivers/bus/mhi/core/internal.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h index e1d3f2ca4922..37f9780d5bdc 100644 --- a/drivers/bus/mhi/core/internal.h +++ b/drivers/bus/mhi/core/internal.h @@ -500,6 +500,8 @@ struct mhi_buf_info { dma_addr_t p_addr; size_t len; enum dma_data_direction dir; + bool used; /* Indicates whether the buffer is used or not */ + bool pre_mapped; /* Already pre-mapped by client */ }; struct mhi_event { @@ -637,6 +639,14 @@ static inline void mhi_free_coherent(struct mhi_controller *mhi_cntrl, dma_free_coherent(mhi_cntrl->cntrl_dev, size, vaddr, dma_handle); } +/* Event processing methods */ +void mhi_ctrl_ev_task(unsigned long data); +void mhi_ev_task(unsigned long data); +int mhi_process_data_event_ring(struct mhi_controller *mhi_cntrl, + struct mhi_event *mhi_event, u32 event_quota); +int mhi_process_ctrl_ev_ring(struct mhi_controller *mhi_cntrl, + struct mhi_event *mhi_event, u32 event_quota); + /* ISR handlers */ irqreturn_t mhi_irq_handler(int irq_number, void *dev); irqreturn_t mhi_intvec_threaded_handler(int irq_number, void *dev); |