On Fri, 2019-09-06 at 14:27 +0300, Ville Syrjälä wrote:
> On Thu, Sep 05, 2019 at 02:09:27PM -0700, José Roberto de Souza
> wrote:
> > From: Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com>
> >
> > Currently we restrict the number of encoders that can be linked to
> > a connector to 3, increase it to match the maximum number of
> > encoders
> > that can be initialized(32).
> >
> > To more effiently do that lets switch from an array of encoder ids
> > to
> > bitmask.
> >
> > Also removing the best_encoder hook from the drivers that only have
> > one encoder per connector(this ones have one encoder in the whole
> > driver), pick_single_encoder_for_connector() will do the same job
> > with no functional change.
>
> I don't think non-atomic drivers have that fallback in place.
> They probable should...
Nice catch, thanks I will bring it back as it was removed from non-
atomic drivers.
>
> Apart from that lgtm
> Reviewed-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
>
> > v2: Fixing missed return on amdgpu_dm_connector_to_encoder()
> >
> > Suggested-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> > Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
> > Cc: Alex Deucher <alexander.deuc...@amd.com>
> > Cc: dri-devel@lists.freedesktop.org
> > Cc: intel-...@lists.freedesktop.org
> > Cc: nouv...@lists.freedesktop.org
> > Cc: amd-...@lists.freedesktop.org
> > Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com>
> > Signed-off-by: José Roberto de Souza <jose.so...@intel.com>
> > ---
> > .../gpu/drm/amd/amdgpu/amdgpu_connectors.c | 23 +++++---------
> > drivers/gpu/drm/amd/amdgpu/dce_virtual.c | 5 ++-
> > .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 +++-
> > drivers/gpu/drm/ast/ast_mode.c | 12 -------
> > drivers/gpu/drm/drm_atomic_helper.c | 9 ++++--
> > drivers/gpu/drm/drm_client_modeset.c | 3 +-
> > drivers/gpu/drm/drm_connector.c | 31 +++++--------
> > ------
> > drivers/gpu/drm/drm_probe_helper.c | 3 +-
> > drivers/gpu/drm/mgag200/mgag200_mode.c | 11 -------
> > drivers/gpu/drm/nouveau/dispnv04/disp.c | 2 +-
> > drivers/gpu/drm/nouveau/dispnv50/disp.c | 2 +-
> > drivers/gpu/drm/nouveau/nouveau_connector.c | 7 ++---
> > drivers/gpu/drm/radeon/radeon_connectors.c | 27 ++++++---------
> > -
> > drivers/gpu/drm/udl/udl_connector.c | 8 -----
> > include/drm/drm_connector.h | 18 +++++------
> > 15 files changed, 53 insertions(+), 114 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
> > b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
> > index ece55c8fa673..d8729285f731 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
> > @@ -217,11 +217,10 @@ amdgpu_connector_update_scratch_regs(struct
> > drm_connector *connector,
> > struct drm_encoder *encoder;
> > const struct drm_connector_helper_funcs *connector_funcs =
> > connector->helper_private;
> > bool connected;
> > - int i;
> >
> > best_encoder = connector_funcs->best_encoder(connector);
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > if ((encoder == best_encoder) && (status ==
> > connector_status_connected))
> > connected = true;
> > else
> > @@ -236,9 +235,8 @@ amdgpu_connector_find_encoder(struct
> > drm_connector *connector,
> > int encoder_type)
> > {
> > struct drm_encoder *encoder;
> > - int i;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > if (encoder->encoder_type == encoder_type)
> > return encoder;
> > }
> > @@ -347,10 +345,9 @@ static struct drm_encoder *
> > amdgpu_connector_best_single_encoder(struct drm_connector
> > *connector)
> > {
> > struct drm_encoder *encoder;
> > - int i;
> >
> > /* pick the first one */
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > + drm_connector_for_each_possible_encoder(connector, encoder)
> > return encoder;
> >
> > return NULL;
> > @@ -1065,9 +1062,8 @@ amdgpu_connector_dvi_detect(struct
> > drm_connector *connector, bool force)
> > /* find analog encoder */
> > if (amdgpu_connector->dac_load_detect) {
> > struct drm_encoder *encoder;
> > - int i;
> >
> > - drm_connector_for_each_possible_encoder(connector,
> > encoder, i) {
> > + drm_connector_for_each_possible_encoder(connector,
> > encoder) {
> > if (encoder->encoder_type !=
> > DRM_MODE_ENCODER_DAC &&
> > encoder->encoder_type !=
> > DRM_MODE_ENCODER_TVDAC)
> > continue;
> > @@ -1117,9 +1113,8 @@ amdgpu_connector_dvi_encoder(struct
> > drm_connector *connector)
> > {
> > struct amdgpu_connector *amdgpu_connector =
> > to_amdgpu_connector(connector);
> > struct drm_encoder *encoder;
> > - int i;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > if (amdgpu_connector->use_digital == true) {
> > if (encoder->encoder_type ==
> > DRM_MODE_ENCODER_TMDS)
> > return encoder;
> > @@ -1134,7 +1129,7 @@ amdgpu_connector_dvi_encoder(struct
> > drm_connector *connector)
> >
> > /* then check use digitial */
> > /* pick the first one */
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > + drm_connector_for_each_possible_encoder(connector, encoder)
> > return encoder;
> >
> > return NULL;
> > @@ -1271,9 +1266,8 @@ u16
> > amdgpu_connector_encoder_get_dp_bridge_encoder_id(struct
> > drm_connector *conn
> > {
> > struct drm_encoder *encoder;
> > struct amdgpu_encoder *amdgpu_encoder;
> > - int i;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > amdgpu_encoder = to_amdgpu_encoder(encoder);
> >
> > switch (amdgpu_encoder->encoder_id) {
> > @@ -1292,10 +1286,9 @@ static bool
> > amdgpu_connector_encoder_is_hbr2(struct drm_connector *connector)
> > {
> > struct drm_encoder *encoder;
> > struct amdgpu_encoder *amdgpu_encoder;
> > - int i;
> > bool found = false;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > amdgpu_encoder = to_amdgpu_encoder(encoder);
> > if (amdgpu_encoder->caps &
> > ATOM_ENCODER_CAP_RECORD_HBR2)
> > found = true;
> > diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
> > b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
> > index f1fadb5ba191..99d12e88de92 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
> > @@ -260,15 +260,14 @@ static struct drm_encoder *
> > dce_virtual_encoder(struct drm_connector *connector)
> > {
> > struct drm_encoder *encoder;
> > - int i;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > if (encoder->encoder_type == DRM_MODE_ENCODER_VIRTUAL)
> > return encoder;
> > }
> >
> > /* pick the first one */
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > + drm_connector_for_each_possible_encoder(connector, encoder)
> > return encoder;
> >
> > return NULL;
> > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> > b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> > index 0a71ed1e7762..d6e3925ca633 100644
> > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> > @@ -4822,7 +4822,11 @@ static int to_drm_connector_type(enum
> > signal_type st)
> >
> > static struct drm_encoder *amdgpu_dm_connector_to_encoder(struct
> > drm_connector *connector)
> > {
> > - return drm_encoder_find(connector->dev, NULL, connector-
> > >encoder_ids[0]);
> > + struct drm_encoder *encoder;
> > +
> > + /* There is only one encoder per connector */
> > + drm_connector_for_each_possible_encoder(connector, encoder)
> > + return encoder;
> > }
> >
> > static void amdgpu_dm_get_native_mode(struct drm_connector
> > *connector)
> > diff --git a/drivers/gpu/drm/ast/ast_mode.c
> > b/drivers/gpu/drm/ast/ast_mode.c
> > index d349c721501c..eef95e1af06b 100644
> > --- a/drivers/gpu/drm/ast/ast_mode.c
> > +++ b/drivers/gpu/drm/ast/ast_mode.c
> > @@ -687,17 +687,6 @@ static void ast_encoder_destroy(struct
> > drm_encoder *encoder)
> > kfree(encoder);
> > }
> >
> > -
> > -static struct drm_encoder *ast_best_single_encoder(struct
> > drm_connector *connector)
> > -{
> > - int enc_id = connector->encoder_ids[0];
> > - /* pick the encoder ids */
> > - if (enc_id)
> > - return drm_encoder_find(connector->dev, NULL, enc_id);
> > - return NULL;
> > -}
> > -
> > -
> > static const struct drm_encoder_funcs ast_enc_funcs = {
> > .destroy = ast_encoder_destroy,
> > };
> > @@ -847,7 +836,6 @@ static void ast_connector_destroy(struct
> > drm_connector *connector)
> > static const struct drm_connector_helper_funcs
> > ast_connector_helper_funcs = {
> > .mode_valid = ast_mode_valid,
> > .get_modes = ast_get_modes,
> > - .best_encoder = ast_best_single_encoder,
> > };
> >
> > static const struct drm_connector_funcs ast_connector_funcs = {
> > diff --git a/drivers/gpu/drm/drm_atomic_helper.c
> > b/drivers/gpu/drm/drm_atomic_helper.c
> > index 4706439fb490..c440027cb537 100644
> > --- a/drivers/gpu/drm/drm_atomic_helper.c
> > +++ b/drivers/gpu/drm/drm_atomic_helper.c
> > @@ -104,8 +104,13 @@ drm_atomic_helper_plane_changed(struct
> > drm_atomic_state *state,
> > static struct drm_encoder *
> > pick_single_encoder_for_connector(struct drm_connector *connector)
> > {
> > - WARN_ON(connector->encoder_ids[1]);
> > - return drm_encoder_find(connector->dev, NULL, connector-
> > >encoder_ids[0]);
> > + struct drm_encoder *encoder;
> > +
> > + WARN_ON(hweight32(connector->possible_encoders) > 1);
> > + drm_connector_for_each_possible_encoder(connector, encoder)
> > + return encoder;
> > +
> > + return NULL;
> > }
> >
> > static int handle_conflicting_encoders(struct drm_atomic_state
> > *state,
> > diff --git a/drivers/gpu/drm/drm_client_modeset.c
> > b/drivers/gpu/drm/drm_client_modeset.c
> > index c8922b7cac09..895b73f23079 100644
> > --- a/drivers/gpu/drm/drm_client_modeset.c
> > +++ b/drivers/gpu/drm/drm_client_modeset.c
> > @@ -415,9 +415,8 @@ static bool connector_has_possible_crtc(struct
> > drm_connector *connector,
> > struct drm_crtc *crtc)
> > {
> > struct drm_encoder *encoder;
> > - int i;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > if (encoder->possible_crtcs & drm_crtc_mask(crtc))
> > return true;
> > }
> > diff --git a/drivers/gpu/drm/drm_connector.c
> > b/drivers/gpu/drm/drm_connector.c
> > index 4c766624b20d..43896c711b50 100644
> > --- a/drivers/gpu/drm/drm_connector.c
> > +++ b/drivers/gpu/drm/drm_connector.c
> > @@ -365,8 +365,6 @@
> > EXPORT_SYMBOL(drm_connector_attach_edid_property);
> > int drm_connector_attach_encoder(struct drm_connector *connector,
> > struct drm_encoder *encoder)
> > {
> > - int i;
> > -
> > /*
> > * In the past, drivers have attempted to model the static
> > association
> > * of connector to encoder in simple connector/encoder devices
> > using a
> > @@ -381,18 +379,15 @@ int drm_connector_attach_encoder(struct
> > drm_connector *connector,
> > if (WARN_ON(connector->encoder))
> > return -EINVAL;
> >
> > - for (i = 0; i < ARRAY_SIZE(connector->encoder_ids); i++) {
> > - if (connector->encoder_ids[i] == 0) {
> > - connector->encoder_ids[i] = encoder->base.id;
> > - return 0;
> > - }
> > - }
> > - return -ENOMEM;
> > + connector->possible_encoders |= drm_encoder_mask(encoder);
> > +
> > + return 0;
> > }
> > EXPORT_SYMBOL(drm_connector_attach_encoder);
> >
> > /**
> > - * drm_connector_has_possible_encoder - check if the connector and
> > encoder are assosicated with each other
> > + * drm_connector_has_possible_encoder - check if the connector and
> > encoder are
> > + * associated with each other
> > * @connector: the connector
> > * @encoder: the encoder
> > *
> > @@ -402,15 +397,7 @@ EXPORT_SYMBOL(drm_connector_attach_encoder);
> > bool drm_connector_has_possible_encoder(struct drm_connector
> > *connector,
> > struct drm_encoder *encoder)
> > {
> > - struct drm_encoder *enc;
> > - int i;
> > -
> > - drm_connector_for_each_possible_encoder(connector, enc, i) {
> > - if (enc == encoder)
> > - return true;
> > - }
> > -
> > - return false;
> > + return connector->possible_encoders &
> > drm_encoder_mask(encoder);
> > }
> > EXPORT_SYMBOL(drm_connector_has_possible_encoder);
> >
> > @@ -2121,7 +2108,6 @@ int drm_mode_getconnector(struct drm_device
> > *dev, void *data,
> > int encoders_count = 0;
> > int ret = 0;
> > int copied = 0;
> > - int i;
> > struct drm_mode_modeinfo u_mode;
> > struct drm_mode_modeinfo __user *mode_ptr;
> > uint32_t __user *encoder_ptr;
> > @@ -2136,14 +2122,13 @@ int drm_mode_getconnector(struct drm_device
> > *dev, void *data,
> > if (!connector)
> > return -ENOENT;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > - encoders_count++;
> > + encoders_count = hweight32(connector->possible_encoders);
> >
> > if ((out_resp->count_encoders >= encoders_count) &&
> > encoders_count) {
> > copied = 0;
> > encoder_ptr = (uint32_t __user *)(unsigned
> > long)(out_resp->encoders_ptr);
> >
> > - drm_connector_for_each_possible_encoder(connector,
> > encoder, i) {
> > + drm_connector_for_each_possible_encoder(connector,
> > encoder) {
> > if (put_user(encoder->base.id, encoder_ptr +
> > copied)) {
> > ret = -EFAULT;
> > goto out;
> > diff --git a/drivers/gpu/drm/drm_probe_helper.c
> > b/drivers/gpu/drm/drm_probe_helper.c
> > index 351cbc40f0f8..a7c87abe88d0 100644
> > --- a/drivers/gpu/drm/drm_probe_helper.c
> > +++ b/drivers/gpu/drm/drm_probe_helper.c
> > @@ -93,7 +93,6 @@ drm_mode_validate_pipeline(struct
> > drm_display_mode *mode,
> > struct drm_device *dev = connector->dev;
> > enum drm_mode_status ret = MODE_OK;
> > struct drm_encoder *encoder;
> > - int i;
> >
> > /* Step 1: Validate against connector */
> > ret = drm_connector_mode_valid(connector, mode);
> > @@ -101,7 +100,7 @@ drm_mode_validate_pipeline(struct
> > drm_display_mode *mode,
> > return ret;
> >
> > /* Step 2: Validate against encoders and crtcs */
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > struct drm_crtc *crtc;
> >
> > ret = drm_encoder_mode_valid(encoder, mode);
> > diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c
> > b/drivers/gpu/drm/mgag200/mgag200_mode.c
> > index 5e778b5f1a10..68226556044b 100644
> > --- a/drivers/gpu/drm/mgag200/mgag200_mode.c
> > +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
> > @@ -1638,16 +1638,6 @@ static enum drm_mode_status
> > mga_vga_mode_valid(struct drm_connector *connector,
> > return MODE_OK;
> > }
> >
> > -static struct drm_encoder *mga_connector_best_encoder(struct
> > drm_connector
> > - *connector)
> > -{
> > - int enc_id = connector->encoder_ids[0];
> > - /* pick the encoder ids */
> > - if (enc_id)
> > - return drm_encoder_find(connector->dev, NULL, enc_id);
> > - return NULL;
> > -}
> > -
> > static void mga_connector_destroy(struct drm_connector *connector)
> > {
> > struct mga_connector *mga_connector =
> > to_mga_connector(connector);
> > @@ -1659,7 +1649,6 @@ static void mga_connector_destroy(struct
> > drm_connector *connector)
> > static const struct drm_connector_helper_funcs
> > mga_vga_connector_helper_funcs = {
> > .get_modes = mga_vga_get_modes,
> > .mode_valid = mga_vga_mode_valid,
> > - .best_encoder = mga_connector_best_encoder,
> > };
> >
> > static const struct drm_connector_funcs mga_vga_connector_funcs =
> > {
> > diff --git a/drivers/gpu/drm/nouveau/dispnv04/disp.c
> > b/drivers/gpu/drm/nouveau/dispnv04/disp.c
> > index dc64863b5fd8..44ee82d0c9b6 100644
> > --- a/drivers/gpu/drm/nouveau/dispnv04/disp.c
> > +++ b/drivers/gpu/drm/nouveau/dispnv04/disp.c
> > @@ -256,7 +256,7 @@ nv04_display_create(struct drm_device *dev)
> >
> > list_for_each_entry_safe(connector, ct,
> > &dev->mode_config.connector_list,
> > head) {
> > - if (!connector->encoder_ids[0]) {
> > + if (!connector->possible_encoders) {
> > NV_WARN(drm, "%s has no encoders, removing\n",
> > connector->name);
> > connector->funcs->destroy(connector);
> > diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c
> > b/drivers/gpu/drm/nouveau/dispnv50/disp.c
> > index 307584107d77..98c87195d711 100644
> > --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
> > +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
> > @@ -2391,7 +2391,7 @@ nv50_display_create(struct drm_device *dev)
> >
> > /* cull any connectors we created that don't have an encoder */
> > list_for_each_entry_safe(connector, tmp, &dev-
> > >mode_config.connector_list, head) {
> > - if (connector->encoder_ids[0])
> > + if (connector->possible_encoders)
> > continue;
> >
> > NV_WARN(drm, "%s has no encoders, removing\n",
> > diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c
> > b/drivers/gpu/drm/nouveau/nouveau_connector.c
> > index 56871d34e3fb..3a5db17bc5c7 100644
> > --- a/drivers/gpu/drm/nouveau/nouveau_connector.c
> > +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
> > @@ -365,9 +365,8 @@ find_encoder(struct drm_connector *connector,
> > int type)
> > {
> > struct nouveau_encoder *nv_encoder;
> > struct drm_encoder *enc;
> > - int i;
> >
> > - drm_connector_for_each_possible_encoder(connector, enc, i) {
> > + drm_connector_for_each_possible_encoder(connector, enc) {
> > nv_encoder = nouveau_encoder(enc);
> >
> > if (type == DCB_OUTPUT_ANY ||
> > @@ -414,10 +413,10 @@ nouveau_connector_ddc_detect(struct
> > drm_connector *connector)
> > struct drm_device *dev = connector->dev;
> > struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
> > struct drm_encoder *encoder;
> > - int i, ret;
> > + int ret;
> > bool switcheroo_ddc = false;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > nv_encoder = nouveau_encoder(encoder);
> >
> > switch (nv_encoder->dcb->type) {
> > diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c
> > b/drivers/gpu/drm/radeon/radeon_connectors.c
> > index b684cd719612..c07427d3c199 100644
> > --- a/drivers/gpu/drm/radeon/radeon_connectors.c
> > +++ b/drivers/gpu/drm/radeon/radeon_connectors.c
> > @@ -249,11 +249,10 @@ radeon_connector_update_scratch_regs(struct
> > drm_connector *connector, enum drm_c
> > struct drm_encoder *encoder;
> > const struct drm_connector_helper_funcs *connector_funcs =
> > connector->helper_private;
> > bool connected;
> > - int i;
> >
> > best_encoder = connector_funcs->best_encoder(connector);
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > if ((encoder == best_encoder) && (status ==
> > connector_status_connected))
> > connected = true;
> > else
> > @@ -269,9 +268,8 @@ radeon_connector_update_scratch_regs(struct
> > drm_connector *connector, enum drm_c
> > static struct drm_encoder *radeon_find_encoder(struct
> > drm_connector *connector, int encoder_type)
> > {
> > struct drm_encoder *encoder;
> > - int i;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > if (encoder->encoder_type == encoder_type)
> > return encoder;
> > }
> > @@ -380,10 +378,9 @@ static int radeon_ddc_get_modes(struct
> > drm_connector *connector)
> > static struct drm_encoder *radeon_best_single_encoder(struct
> > drm_connector *connector)
> > {
> > struct drm_encoder *encoder;
> > - int i;
> >
> > /* pick the first one */
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > + drm_connector_for_each_possible_encoder(connector, encoder)
> > return encoder;
> >
> > return NULL;
> > @@ -428,14 +425,13 @@
> > radeon_connector_analog_encoder_conflict_solve(struct drm_connector
> > *connector,
> >
> > list_for_each_entry(conflict, &dev->mode_config.connector_list,
> > head) {
> > struct drm_encoder *enc;
> > - int i;
> >
> > if (conflict == connector)
> > continue;
> >
> > radeon_conflict = to_radeon_connector(conflict);
> >
> > - drm_connector_for_each_possible_encoder(conflict, enc,
> > i) {
> > + drm_connector_for_each_possible_encoder(conflict, enc)
> > {
> > /* if the IDs match */
> > if (enc == encoder) {
> > if (conflict->status !=
> > connector_status_connected)
> > @@ -1363,9 +1359,7 @@ radeon_dvi_detect(struct drm_connector
> > *connector, bool force)
> >
> > /* find analog encoder */
> > if (radeon_connector->dac_load_detect) {
> > - int i;
> > -
> > - drm_connector_for_each_possible_encoder(connector,
> > encoder, i) {
> > + drm_connector_for_each_possible_encoder(connector,
> > encoder) {
> > if (encoder->encoder_type !=
> > DRM_MODE_ENCODER_DAC &&
> > encoder->encoder_type !=
> > DRM_MODE_ENCODER_TVDAC)
> > continue;
> > @@ -1443,9 +1437,8 @@ static struct drm_encoder
> > *radeon_dvi_encoder(struct drm_connector *connector)
> > {
> > struct radeon_connector *radeon_connector =
> > to_radeon_connector(connector);
> > struct drm_encoder *encoder;
> > - int i;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > if (radeon_connector->use_digital == true) {
> > if (encoder->encoder_type ==
> > DRM_MODE_ENCODER_TMDS)
> > return encoder;
> > @@ -1460,7 +1453,7 @@ static struct drm_encoder
> > *radeon_dvi_encoder(struct drm_connector *connector)
> >
> > /* then check use digitial */
> > /* pick the first one */
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > + drm_connector_for_each_possible_encoder(connector, encoder)
> > return encoder;
> >
> > return NULL;
> > @@ -1603,9 +1596,8 @@ u16
> > radeon_connector_encoder_get_dp_bridge_encoder_id(struct
> > drm_connector *conn
> > {
> > struct drm_encoder *encoder;
> > struct radeon_encoder *radeon_encoder;
> > - int i;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > radeon_encoder = to_radeon_encoder(encoder);
> >
> > switch (radeon_encoder->encoder_id) {
> > @@ -1624,10 +1616,9 @@ static bool
> > radeon_connector_encoder_is_hbr2(struct drm_connector *connector)
> > {
> > struct drm_encoder *encoder;
> > struct radeon_encoder *radeon_encoder;
> > - int i;
> > bool found = false;
> >
> > - drm_connector_for_each_possible_encoder(connector, encoder, i)
> > {
> > + drm_connector_for_each_possible_encoder(connector, encoder) {
> > radeon_encoder = to_radeon_encoder(encoder);
> > if (radeon_encoder->caps &
> > ATOM_ENCODER_CAP_RECORD_HBR2)
> > found = true;
> > diff --git a/drivers/gpu/drm/udl/udl_connector.c
> > b/drivers/gpu/drm/udl/udl_connector.c
> > index ddb61a60c610..b4ae3e89a7b4 100644
> > --- a/drivers/gpu/drm/udl/udl_connector.c
> > +++ b/drivers/gpu/drm/udl/udl_connector.c
> > @@ -90,13 +90,6 @@ udl_detect(struct drm_connector *connector, bool
> > force)
> > return connector_status_connected;
> > }
> >
> > -static struct drm_encoder*
> > -udl_best_single_encoder(struct drm_connector *connector)
> > -{
> > - int enc_id = connector->encoder_ids[0];
> > - return drm_encoder_find(connector->dev, NULL, enc_id);
> > -}
> > -
> > static int udl_connector_set_property(struct drm_connector
> > *connector,
> > struct drm_property *property,
> > uint64_t val)
> > @@ -120,7 +113,6 @@ static void udl_connector_destroy(struct
> > drm_connector *connector)
> > static const struct drm_connector_helper_funcs
> > udl_connector_helper_funcs = {
> > .get_modes = udl_get_modes,
> > .mode_valid = udl_mode_valid,
> > - .best_encoder = udl_best_single_encoder,
> > };
> >
> > static const struct drm_connector_funcs udl_connector_funcs = {
> > diff --git a/include/drm/drm_connector.h
> > b/include/drm/drm_connector.h
> > index 681cb590f952..c6e993e78dbd 100644
> > --- a/include/drm/drm_connector.h
> > +++ b/include/drm/drm_connector.h
> > @@ -1288,12 +1288,12 @@ struct drm_connector {
> > /** @override_edid: has the EDID been overwritten through
> > debugfs for testing? */
> > bool override_edid;
> >
> > -#define DRM_CONNECTOR_MAX_ENCODER 3
> > /**
> > - * @encoder_ids: Valid encoders for this connector. Please only
> > use
> > - * drm_connector_for_each_possible_encoder() to enumerate
> > these.
> > + * @possible_encoders: Bit mask of encoders that can drive this
> > + * connector, drm_encoder_index() determines the index into the
> > bitfield
> > + * and the bits are set with drm_connector_attach_encoder().
> > */
> > - uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
> > + u32 possible_encoders;
> >
> > /**
> > * @encoder: Currently bound encoder driving this connector, if
> > any.
> > @@ -1608,13 +1608,9 @@ bool
> > drm_connector_has_possible_encoder(struct drm_connector *connector,
> > * drm_connector_for_each_possible_encoder - iterate connector's
> > possible encoders
> > * @connector: &struct drm_connector pointer
> > * @encoder: &struct drm_encoder pointer used as cursor
> > - * @__i: int iteration cursor, for macro-internal use
> > */
> > -#define drm_connector_for_each_possible_encoder(connector,
> > encoder, __i) \
> > - for ((__i) = 0; (__i) < ARRAY_SIZE((connector)->encoder_ids) &&
> > \
> > - (connector)->encoder_ids[(__i)] != 0; (__i)++) \
> > - for_each_if((encoder) = \
> > - drm_encoder_find((connector)->dev, NULL, \
> > - (connector)-
> > >encoder_ids[(__i)])) \
> > +#define drm_connector_for_each_possible_encoder(connector,
> > encoder) \
> > + drm_for_each_encoder_mask(encoder, (connector)->dev, \
> > + (connector)->possible_encoders)
> >
> > #endif
> > --
> > 2.23.0
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