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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" > -----Original Message----- > From: Chris Wilson > Sent: Friday, January 15, 2021 6:51 PM > To: S, Saichandana ; intel- > gfx@lists.freedesktop.org > Cc: Nikula, Jani ; S, Saichandana > > Subject: Re: [Intel-gfx] [PATCH v4] drm/i915/debugfs : PM_REQ and > PM_RES registers > > Quoting Saichandana S (2021-01-15 13:01:10) > > +static int i915_pm_req_res_info(struct seq_file *m, void *unused) { > > + struct drm_i915_private *i915 = node_to_i915(m->private); > > + struct intel_csr *csr = &i915->csr; > > + u32 DC9_status; > > + > > + if (!HAS_CSR(i915)) > > + return -ENODEV; > > + if (!csr->dmc_payload) > > + return 0; > > + DC9_status = intel_de_read(i915, PM_RSP_DBG_1) & > > + PM_RESP_DC9_READY; > > A read without waking the device up? Wait until IGT sees this. > [wrap with with_intel_runtime_pm(&i915->runtime_pm, wakeref)] -Chris > >Using wakeref, doesn't allow i915 to go to suspend state, further blocking display DC9 entry. Thus wakeref IGT test will fail. >[S, Saichandana] _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx