From: Daniel Vetter <daniel@ffwll.ch>
To: Alex Deucher <alexdeucher@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>,
dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org
Subject: Re: [PATCH 13/15] drm/amdgpu/display: split dp connector registration (v3)
Date: Fri, 14 Feb 2020 08:39:34 +0100 [thread overview]
Message-ID: <20200214073934.GV2363188@phenom.ffwll.local> (raw)
In-Reply-To: <20200207211713.3870-1-alexander.deucher@amd.com>
On Fri, Feb 07, 2020 at 04:17:13PM -0500, Alex Deucher wrote:
> Split into init and register functions to avoid a segfault
> in some configs when the load/unload callbacks are removed.
>
> v2:
> - add back accidently dropped has_aux setting
> - set dev in late_register
>
> v3:
> - fix dp cec ordering
Why did you move this back out of the late_register callback when going
from v2->v3? In i915 we register the cec stuff from ->late_register, like
anything else userspace visible. Maybe follow-up patch (the idea behind
removing the ->load callback is to close all the driver load races,
instead of only open("/dev/dri/0"), which is protected by
drm_global_mutex). On this:
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cheers, Daniel
>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 16 ++++++++++++++++
> drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 10 ++--------
> .../amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 7 ++++++-
> 3 files changed, 24 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
> index ec1501e3a63a..f355d9a752d2 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
> @@ -1461,6 +1461,20 @@ static enum drm_mode_status amdgpu_connector_dp_mode_valid(struct drm_connector
> return MODE_OK;
> }
>
> +static int
> +amdgpu_connector_late_register(struct drm_connector *connector)
> +{
> + struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
> + int r = 0;
> +
> + if (amdgpu_connector->ddc_bus->has_aux) {
> + amdgpu_connector->ddc_bus->aux.dev = amdgpu_connector->base.kdev;
> + r = drm_dp_aux_register(&amdgpu_connector->ddc_bus->aux);
> + }
> +
> + return r;
> +}
> +
> static const struct drm_connector_helper_funcs amdgpu_connector_dp_helper_funcs = {
> .get_modes = amdgpu_connector_dp_get_modes,
> .mode_valid = amdgpu_connector_dp_mode_valid,
> @@ -1475,6 +1489,7 @@ static const struct drm_connector_funcs amdgpu_connector_dp_funcs = {
> .early_unregister = amdgpu_connector_unregister,
> .destroy = amdgpu_connector_destroy,
> .force = amdgpu_connector_dvi_force,
> + .late_register = amdgpu_connector_late_register,
> };
>
> static const struct drm_connector_funcs amdgpu_connector_edp_funcs = {
> @@ -1485,6 +1500,7 @@ static const struct drm_connector_funcs amdgpu_connector_edp_funcs = {
> .early_unregister = amdgpu_connector_unregister,
> .destroy = amdgpu_connector_destroy,
> .force = amdgpu_connector_dvi_force,
> + .late_register = amdgpu_connector_late_register,
> };
>
> void
> diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
> index ea702a64f807..9b74cfdba7b8 100644
> --- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
> +++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
> @@ -186,16 +186,10 @@ amdgpu_atombios_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *m
>
> void amdgpu_atombios_dp_aux_init(struct amdgpu_connector *amdgpu_connector)
> {
> - int ret;
> -
> amdgpu_connector->ddc_bus->rec.hpd = amdgpu_connector->hpd.hpd;
> - amdgpu_connector->ddc_bus->aux.dev = amdgpu_connector->base.kdev;
> amdgpu_connector->ddc_bus->aux.transfer = amdgpu_atombios_dp_aux_transfer;
> - ret = drm_dp_aux_register(&amdgpu_connector->ddc_bus->aux);
> - if (!ret)
> - amdgpu_connector->ddc_bus->has_aux = true;
> -
> - WARN(ret, "drm_dp_aux_register_i2c_bus() failed with error %d\n", ret);
> + drm_dp_aux_init(&amdgpu_connector->ddc_bus->aux);
> + amdgpu_connector->ddc_bus->has_aux = true;
> }
>
> /***** general DP utility functions *****/
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> index 3959c942c88b..d5b9e72f2649 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> @@ -155,6 +155,11 @@ amdgpu_dm_mst_connector_late_register(struct drm_connector *connector)
> struct amdgpu_dm_connector *amdgpu_dm_connector =
> to_amdgpu_dm_connector(connector);
> struct drm_dp_mst_port *port = amdgpu_dm_connector->port;
> + int r;
> +
> + r = drm_dp_aux_register(&amdgpu_dm_connector->dm_dp_aux.aux);
> + if (r)
> + return r;
>
> #if defined(CONFIG_DEBUG_FS)
> connector_debugfs_init(amdgpu_dm_connector);
> @@ -484,7 +489,7 @@ void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
> aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
> aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
>
> - drm_dp_aux_register(&aconnector->dm_dp_aux.aux);
> + drm_dp_aux_init(&aconnector->dm_dp_aux.aux);
> drm_dp_cec_register_connector(&aconnector->dm_dp_aux.aux,
> &aconnector->base);
>
> --
> 2.24.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2020-02-14 7:39 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-07 21:17 [PATCH 13/15] drm/amdgpu/display: split dp connector registration (v3) Alex Deucher
2020-02-11 16:13 ` Alex Deucher
2020-02-13 17:03 ` Alex Deucher
2020-02-14 7:39 ` Daniel Vetter [this message]
2020-02-14 17:39 ` Alex Deucher
2020-02-14 18:35 ` Daniel Vetter
2020-02-14 20:07 ` Alex Deucher
2020-02-24 21:09 ` Harry Wentland
2020-02-25 14:06 ` Alex Deucher
2020-02-25 15:10 ` Liu, Zhan
2020-02-25 18:20 ` Liu, Zhan
2020-02-25 18:23 ` Alex Deucher
2020-02-25 18:30 ` Zuo, Jerry
2020-02-25 18:32 ` Alex Deucher
2020-02-25 18:42 ` Alex Deucher
2020-02-25 19:07 ` Zuo, Jerry
2020-02-26 15:36 ` Zuo, Jerry
2020-02-26 15:39 ` Alex Deucher
2020-02-26 15:41 ` Zuo, Jerry
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