diff options
| author | Bhaumik Bhatt <bbhatt@codeaurora.org> | 2020-09-29 23:22:13 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-02 11:33:47 +0200 |
| commit | c7bd825e52b3d0b9ae519a006b80521d4587f864 (patch) | |
| tree | eb46db347340bb19767091a3eed6dad3a6e28c08 /drivers/bus/mhi/core/init.c | |
| parent | e0af24acdabc3cdb00bb8c8e23f117ae5d8a4ef4 (diff) | |
| download | linux-c7bd825e52b3d0b9ae519a006b80521d4587f864.tar.bz2 | |
bus: mhi: core: Introduce debugfs entries for MHI
Introduce debugfs entries to show state, register, channel, device,
and event rings information. Allow the host to dump registers,
issue device wake, and change the MHI timeout to help in debug.
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200929175218.8178-15-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/bus/mhi/core/init.c')
| -rw-r--r-- | drivers/bus/mhi/core/init.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c index d23293876be8..61e5885a331a 100644 --- a/drivers/bus/mhi/core/init.c +++ b/drivers/bus/mhi/core/init.c @@ -4,6 +4,7 @@ * */ +#include <linux/debugfs.h> #include <linux/device.h> #include <linux/dma-direction.h> #include <linux/dma-mapping.h> @@ -915,6 +916,8 @@ int mhi_register_controller(struct mhi_controller *mhi_cntrl, mhi_cntrl->mhi_dev = mhi_dev; + mhi_create_debugfs(mhi_cntrl); + return 0; error_add_dev: @@ -937,6 +940,8 @@ void mhi_unregister_controller(struct mhi_controller *mhi_cntrl) struct mhi_chan *mhi_chan = mhi_cntrl->mhi_chan; unsigned int i; + mhi_destroy_debugfs(mhi_cntrl); + kfree(mhi_cntrl->mhi_cmd); kfree(mhi_cntrl->mhi_event); @@ -1300,11 +1305,13 @@ struct bus_type mhi_bus_type = { static int __init mhi_init(void) { + mhi_debugfs_init(); return bus_register(&mhi_bus_type); } static void __exit mhi_exit(void) { + mhi_debugfs_exit(); bus_unregister(&mhi_bus_type); } |