A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-10 22:40:54 -04:00
Code Issues Projects Releases Packages Wiki Activity

mhi: core: Separate rddm support and dump collection

Browse source 
As of now, there is no way for MHI to know if device supports RDDM
and host controller wishes to skip ramdump collection. Allow for
that by letting the controller set the rddm support boolean which
indicates device side support. If rddm_size is set to zero while
the support for RDDM is present, that indicates disinterest in
ramdump collection if RDDM execution environment is entered.

Change-Id: I0a36219fc7782951aa1b81b9ec0d182ecfb3a916
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
This commit is contained in:
Bhaumik Bhatt 2020-05-26 19:00:43 -07:00
commit 20aba7d1d7
5 changed files with 12 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

4
drivers/bus/mhi/core/mhi_boot.c
View file

@ -278,6 +278,10 @@ int mhi_download_rddm_img(struct mhi_controller *mhi_cntrl, bool in_panic)
void __iomem *base = mhi_cntrl->bhie;
u32 rx_status;
/* device supports RDDM but controller wants to skip ramdumps */
if (!mhi_cntrl->rddm_supported || !mhi_cntrl->rddm_image)
return -EINVAL;
if (in_panic)
return __mhi_download_rddm_in_panic(mhi_cntrl);

2
drivers/bus/mhi/core/mhi_init.c
View file

@ -1780,7 +1780,7 @@ int mhi_prepare_for_power_up(struct mhi_controller *mhi_cntrl)
* allocate rddm table if specified, this table is for debug purpose
* so we'll ignore erros
*/
if (mhi_cntrl->rddm_size) {
if (mhi_cntrl->rddm_supported && mhi_cntrl->rddm_size) {
mhi_alloc_bhie_table(mhi_cntrl, &mhi_cntrl->rddm_image,
mhi_cntrl->rddm_size);

2
drivers/bus/mhi/core/mhi_main.c
View file

@ -1212,7 +1212,7 @@ int mhi_process_ctrl_ev_ring(struct mhi_controller *mhi_cntrl,
* event instead of sys error state change event
*/
if (mhi_cntrl->ee == MHI_EE_RDDM ||
mhi_cntrl->rddm_image)
mhi_cntrl->rddm_supported)
break;
MHI_ERR("MHI system error detected\n");

6
drivers/bus/mhi/core/mhi_pm.c
View file

@ -859,7 +859,7 @@ void mhi_process_sys_err(struct mhi_controller *mhi_cntrl)
* if controller supports rddm, we do not process sys error state,
* instead we will jump directly to rddm state
*/
if (mhi_cntrl->rddm_image) {
if (mhi_cntrl->rddm_supported) {
MHI_CNTRL_LOG(
"Controller supports RDDM, skipping SYS_ERR_PROCESS\n");
return;
@ -1714,6 +1714,10 @@ int mhi_force_rddm_mode(struct mhi_controller *mhi_cntrl)
to_mhi_pm_state_str(mhi_cntrl->pm_state),
TO_MHI_EXEC_STR(mhi_cntrl->ee));
/* device does not support RDDM */
if (!mhi_cntrl->rddm_supported)
return -EINVAL;
/* device already in rddm */
if (mhi_cntrl->ee == MHI_EE_RDDM)
return 0;

1
include/linux/mhi.h
View file

@ -295,6 +295,7 @@ struct mhi_controller {
/* mhi host manages downloading entire fbc images */
bool fbc_download;
bool rddm_supported;
size_t rddm_size;
size_t sbl_size;
size_t seg_len;