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disp: msm: dp: check for dp link clocks before accessing dp registers

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Add safety checks to check for dp link and core clocks before accessing
the main control registers during dp teardown or dp setup.

Change-Id: Ic80050b7c1cec59d7fc27a1c5f12fa1b244f86fb
Signed-off-by: Vara Reddy <varar@codeaurora.org>
This commit is contained in:
Vara Reddy
2021-08-16 15:16:27 -07:00
parent 8b0b1d1c51
commit c57fe2034a
3 changed files with 36 additions and 0 deletions
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10
msm/dp/dp_ctrl.c
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@@ -165,6 +165,16 @@ trigger_idle:
static void dp_ctrl_configure_source_link_params(struct dp_ctrl_private *ctrl,
bool enable)
{
if (!ctrl->power->clk_status(ctrl->power, DP_LINK_PM)) {
DP_WARN("DP link clocks are off\n");
return;
}
if (!ctrl->power->clk_status(ctrl->power, DP_CORE_PM)) {
DP_WARN("DP core clocks are off\n");
return;
}
if (enable) {
ctrl->catalog->lane_mapping(ctrl->catalog, ctrl->orientation,
ctrl->parser->l_map);