diff options
Diffstat (limited to 'include/linux/mhi.h')
| -rw-r--r-- | include/linux/mhi.h | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/include/linux/mhi.h b/include/linux/mhi.h index ad1996001965..c4a940d98912 100644 --- a/include/linux/mhi.h +++ b/include/linux/mhi.h @@ -53,9 +53,9 @@ enum mhi_callback { * @MHI_CHAIN: Linked transfer */ enum mhi_flags { - MHI_EOB, - MHI_EOT, - MHI_CHAIN, + MHI_EOB = BIT(0), + MHI_EOT = BIT(1), + MHI_CHAIN = BIT(2), }; /** @@ -331,18 +331,17 @@ struct mhi_controller_config { * @wlock: Lock for protecting device wakeup * @mhi_link_info: Device bandwidth info * @st_worker: State transition worker - * @fw_worker: Firmware download worker - * @syserr_worker: System error worker * @state_event: State change event * @status_cb: CB function to notify power states of the device (required) - * @link_status: CB function to query link status of the device (required) * @wake_get: CB function to assert device wake (optional) * @wake_put: CB function to de-assert device wake (optional) * @wake_toggle: CB function to assert and de-assert device wake (optional) * @runtime_get: CB function to controller runtime resume (required) - * @runtimet_put: CB function to decrement pm usage (required) + * @runtime_put: CB function to decrement pm usage (required) * @map_single: CB function to create TRE buffer * @unmap_single: CB function to destroy TRE buffer + * @read_reg: Read a MHI register via the physical link (required) + * @write_reg: Write a MHI register via the physical link (required) * @buffer_len: Bounce buffer length * @bounce_buf: Use of bounce buffer * @fbc_download: MHI host needs to do complete image transfer (optional) @@ -411,13 +410,10 @@ struct mhi_controller { spinlock_t wlock; struct mhi_link_info mhi_link_info; struct work_struct st_worker; - struct work_struct fw_worker; - struct work_struct syserr_worker; wait_queue_head_t state_event; void (*status_cb)(struct mhi_controller *mhi_cntrl, enum mhi_callback cb); - int (*link_status)(struct mhi_controller *mhi_cntrl); void (*wake_get)(struct mhi_controller *mhi_cntrl, bool override); void (*wake_put)(struct mhi_controller *mhi_cntrl, bool override); void (*wake_toggle)(struct mhi_controller *mhi_cntrl); @@ -427,6 +423,10 @@ struct mhi_controller { struct mhi_buf_info *buf); void (*unmap_single)(struct mhi_controller *mhi_cntrl, struct mhi_buf_info *buf); + int (*read_reg)(struct mhi_controller *mhi_cntrl, void __iomem *addr, + u32 *out); + void (*write_reg)(struct mhi_controller *mhi_cntrl, void __iomem *addr, + u32 val); size_t buffer_len; bool bounce_buf; @@ -569,6 +569,13 @@ void mhi_set_mhi_state(struct mhi_controller *mhi_cntrl, enum mhi_state state); /** + * mhi_notify - Notify the MHI client driver about client device status + * @mhi_dev: MHI device instance + * @cb_reason: MHI callback reason + */ +void mhi_notify(struct mhi_device *mhi_dev, enum mhi_callback cb_reason); + +/** * mhi_prepare_for_power_up - Do pre-initialization before power up. * This is optional, call this before power up if * the controller does not want bus framework to @@ -605,6 +612,18 @@ void mhi_power_down(struct mhi_controller *mhi_cntrl, bool graceful); void mhi_unprepare_after_power_down(struct mhi_controller *mhi_cntrl); /** + * mhi_pm_suspend - Move MHI into a suspended state + * @mhi_cntrl: MHI controller + */ +int mhi_pm_suspend(struct mhi_controller *mhi_cntrl); + +/** + * mhi_pm_resume - Resume MHI from suspended state + * @mhi_cntrl: MHI controller + */ +int mhi_pm_resume(struct mhi_controller *mhi_cntrl); + +/** * mhi_download_rddm_img - Download ramdump image from device for * debugging purpose. * @mhi_cntrl: MHI controller |