Messages in this thread | | | Date | Tue, 18 Aug 2020 15:33:24 +0530 | From | Sai Prakash Ranjan <> | Subject | Re: [v2] drm/msm: add shutdown support for display platform_driver |
| |
Hi,
On 2020-06-01 16:33, Krishna Manikandan wrote: > Define shutdown callback for display drm driver, > so as to disable all the CRTCS when shutdown > notification is received by the driver. > > This change will turn off the timing engine so > that no display transactions are requested > while mmu translations are getting disabled > during reboot sequence. > > Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org> > > Changes in v2: > - Remove NULL check from msm_pdev_shutdown (Stephen Boyd) > - Change commit text to reflect when this issue > was uncovered (Sai Prakash Ranjan) > --- > drivers/gpu/drm/msm/msm_drv.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/gpu/drm/msm/msm_drv.c > b/drivers/gpu/drm/msm/msm_drv.c > index e4b750b..94e3963 100644 > --- a/drivers/gpu/drm/msm/msm_drv.c > +++ b/drivers/gpu/drm/msm/msm_drv.c > @@ -1322,6 +1322,13 @@ static int msm_pdev_remove(struct > platform_device *pdev) > return 0; > } > > +static void msm_pdev_shutdown(struct platform_device *pdev) > +{ > + struct drm_device *drm = platform_get_drvdata(pdev); > + > + drm_atomic_helper_shutdown(drm); > +} > + > static const struct of_device_id dt_match[] = { > { .compatible = "qcom,mdp4", .data = (void *)KMS_MDP4 }, > { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 }, > @@ -1334,6 +1341,7 @@ static int msm_pdev_remove(struct platform_device > *pdev) > static struct platform_driver msm_platform_driver = { > .probe = msm_pdev_probe, > .remove = msm_pdev_remove, > + .shutdown = msm_pdev_shutdown, > .driver = { > .name = "msm", > .of_match_table = dt_match,
Any more comments on this patch?
Thanks, Sai
-- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
| |