diff options
| author | Konrad Dybcio <konrad.dybcio@linaro.org> | 2023-09-25 16:50:35 +0200 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2023-10-09 11:22:05 -0700 |
| commit | 88a0997f2f949f1f7076adeb5d4fa4d684cca5bf (patch) | |
| tree | c99608bfdbb841fef3f9108fd826327f3a2fcf13 | |
| parent | af66706accdf5afef45204afc87037f876e0665c (diff) | |
drm/msm/a6xx: Send ACD state to QMP at GMU resume
The QMP mailbox expects to be notified of the ACD (Adaptive Clock
Distribution) state. Get a handle to the mailbox at probe time and
poke it at GMU resume.
Since we don't fully support ACD yet, hardcode the message to "val: 0"
(state = disabled).
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> # sm8450
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/559287/
Signed-off-by: Rob Clark <robdclark@chromium.org>
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 15 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a6xx_gmu.h | 3 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c index 15ab912d9c45..c1934d46c0d7 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c @@ -989,6 +989,14 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu) gmu->hung = false; + /* Notify AOSS about the ACD state (unimplemented for now => disable it) */ + if (!IS_ERR(gmu->qmp)) { + ret = qmp_send(gmu->qmp, "{class: gpu, res: acd, val: %d}", + 0 /* Hardcode ACD to be disabled for now */); + if (ret) + dev_err(gmu->dev, "failed to send GPU ACD state\n"); + } + /* Turn on the resources */ pm_runtime_get_sync(gmu->dev); @@ -1741,6 +1749,10 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) goto detach_cxpd; } + gmu->qmp = qmp_get(gmu->dev); + if (IS_ERR(gmu->qmp) && adreno_is_a7xx(adreno_gpu)) + return PTR_ERR(gmu->qmp); + init_completion(&gmu->pd_gate); complete_all(&gmu->pd_gate); gmu->pd_nb.notifier_call = cxpd_notifier_cb; @@ -1764,6 +1776,9 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) return 0; + if (!IS_ERR_OR_NULL(gmu->qmp)) + qmp_put(gmu->qmp); + detach_cxpd: dev_pm_domain_detach(gmu->cxpd, false); diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h index 236f81a43caa..592b296aab22 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h @@ -8,6 +8,7 @@ #include <linux/iopoll.h> #include <linux/interrupt.h> #include <linux/notifier.h> +#include <linux/soc/qcom/qcom_aoss.h> #include "msm_drv.h" #include "a6xx_hfi.h" @@ -96,6 +97,8 @@ struct a6xx_gmu { /* For power domain callback */ struct notifier_block pd_nb; struct completion pd_gate; + + struct qmp *qmp; }; static inline u32 gmu_read(struct a6xx_gmu *gmu, u32 offset) |