android/android_kernel_samsung_sm8650
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

usb: dwc3-msm-core: Add support for speed limiting to Gen1 on boot

Browse Source 
Upon the first sm_work run when the drd_state transitions from
DRD_STATE_UNDEFINED to host/peripheral mode, the Gen1 speed limit
logic will not be exercised because dwc3_msm_power_collapse_por
would bail out. To cover this case, add support for speed limit
in dwc3_msm_core_init as well.

Change-Id: I9070b434800394661865658ef44c8fc71bf4f920
Signed-off-by: Ajay Agarwal <quic_ajaya@quicinc.com>
Signed-off-by: Sriram Dash <quic_sriramd@quicinc.com>
Signed-off-by: Rajashekar kuruva <quic_kuruva@quicinc.com>
This commit is contained in:
Rajashekar kuruva 2023-10-03 23:40:06 +05:30 committed by Rajashekar Kuruva
parent 3441729330
commit 009ada0175
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/usb/dwc3/dwc3-msm-core.c
View File

@ -3597,6 +3597,13 @@ static void dwc3_dis_sleep_mode(struct dwc3_msm *mdwc)
dwc3_msm_write_reg(mdwc->base, DWC3_GUCTL1, reg);
}
/* Force Gen1 speed on Gen2 controller if required */
static void dwc3_force_gen1(struct dwc3_msm *mdwc)
{
if (mdwc->force_gen1 && (mdwc->ip == DWC31_IP))
dwc3_msm_write_reg_field(mdwc->base, DWC3_LLUCTL, DWC3_LLUCTL_FORCE_GEN1, 1);
}
static int dwc3_msm_power_collapse_por(struct dwc3_msm *mdwc)
{
struct dwc3 *dwc = NULL;
@ -3644,9 +3651,7 @@ static int dwc3_msm_power_collapse_por(struct dwc3_msm *mdwc)
mdwc3_dis_sending_cm_l1(mdwc);
}
/* Force Gen1 speed on Gen2 controller if required */
if (mdwc->force_gen1 && mdwc->ip == DWC31_IP)
dwc3_msm_write_reg_field(mdwc->base, DWC3_LLUCTL, DWC3_LLUCTL_FORCE_GEN1, 1);
dwc3_force_gen1(mdwc);
return 0;
}
@ -5851,6 +5856,7 @@ static int dwc3_msm_core_init(struct dwc3_msm *mdwc)
if (!mdwc->xhci_pm_ops)
goto free_dwc_pm_ops;
dwc3_force_gen1(mdwc);
dwc3_msm_notify_event(dwc, DWC3_GSI_EVT_BUF_ALLOC, 0);
pm_runtime_set_autosuspend_delay(dwc->dev, 0);
pm_runtime_allow(dwc->dev);