From: Lyude Paul Date: Wed, 26 Aug 2020 18:24:42 +0000 (-0400) Subject: drm/nouveau/kms: Search for encoders' connectors properly X-Git-Tag: microblaze-v5.11~41^2~27^2~14 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=09838c4efe9afb6fefa889d92c3571d49029af26;p=linux-2.6-microblaze.git drm/nouveau/kms: Search for encoders' connectors properly While the way we find the associated connector for an encoder is just fine for legacy modesetting, it's not correct for nv50+ since that uses atomic modesetting. For reference, see the drm_encoder kdocs. Fix this by removing nouveau_encoder_connector_get(), and replacing it with nv04_encoder_get_connector(), nv50_outp_get_old_connector(), and nv50_outp_get_new_connector(). v2: * Don't line-wrap for_each_(old|new)_connector_in_state in nv50_outp_get_(old|new)_connector() - sravn v3: * Fix potential uninitialized usage of nv_connector (needs to be initialized to NULL at the start). Thanks kernel test robot! v4: * Actually fix uninitialized nv_connector usage in nv50_audio_component_get_eld(). The previous fix wouldn't have worked since we would have started out with nv_connector == NULL, but wouldn't clear it after a single drm_for_each_encoder() iteration. Thanks again Kernel bot! Signed-off-by: Lyude Paul Reviewed-by: Ben Skeggs Link: https://patchwork.freedesktop.org/patch/msgid/20200826182456.322681-7-lyude@redhat.com --- diff --git a/drivers/gpu/drm/nouveau/dispnv04/dac.c b/drivers/gpu/drm/nouveau/dispnv04/dac.c index ffdd447d8706..22d10f328559 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/dac.c +++ b/drivers/gpu/drm/nouveau/dispnv04/dac.c @@ -419,7 +419,7 @@ static void nv04_dac_commit(struct drm_encoder *encoder) helper->dpms(encoder, DRM_MODE_DPMS_ON); NV_DEBUG(drm, "Output %s is running on CRTC %d using output %c\n", - nouveau_encoder_connector_get(nv_encoder)->base.name, + nv04_encoder_get_connector(nv_encoder)->base.name, nv_crtc->index, '@' + ffs(nv_encoder->dcb->or)); } diff --git a/drivers/gpu/drm/nouveau/dispnv04/dfp.c b/drivers/gpu/drm/nouveau/dispnv04/dfp.c index f9f4482c79b5..42687ea2a4ca 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/dfp.c +++ b/drivers/gpu/drm/nouveau/dispnv04/dfp.c @@ -184,7 +184,8 @@ static bool nv04_dfp_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *adjusted_mode) { struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - struct nouveau_connector *nv_connector = nouveau_encoder_connector_get(nv_encoder); + struct nouveau_connector *nv_connector = + nv04_encoder_get_connector(nv_encoder); if (!nv_connector->native_mode || nv_connector->scaling_mode == DRM_MODE_SCALE_NONE || @@ -478,7 +479,7 @@ static void nv04_dfp_commit(struct drm_encoder *encoder) helper->dpms(encoder, DRM_MODE_DPMS_ON); NV_DEBUG(drm, "Output %s is running on CRTC %d using output %c\n", - nouveau_encoder_connector_get(nv_encoder)->base.name, + nv04_encoder_get_connector(nv_encoder)->base.name, nv_crtc->index, '@' + ffs(nv_encoder->dcb->or)); } @@ -591,7 +592,7 @@ static void nv04_dfp_restore(struct drm_encoder *encoder) if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS) { struct nouveau_connector *connector = - nouveau_encoder_connector_get(nv_encoder); + nv04_encoder_get_connector(nv_encoder); if (connector && connector->native_mode) call_lvds_script(dev, nv_encoder->dcb, head, diff --git a/drivers/gpu/drm/nouveau/dispnv04/disp.c b/drivers/gpu/drm/nouveau/dispnv04/disp.c index 900ab69df7e8..3f046b917c85 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv04/disp.c @@ -35,6 +35,24 @@ #include +struct nouveau_connector * +nv04_encoder_get_connector(struct nouveau_encoder *encoder) +{ + struct drm_device *dev = to_drm_encoder(encoder)->dev; + struct drm_connector *connector; + struct drm_connector_list_iter conn_iter; + struct nouveau_connector *nv_connector = NULL; + + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { + if (connector->encoder == to_drm_encoder(encoder)) + nv_connector = nouveau_connector(connector); + } + drm_connector_list_iter_end(&conn_iter); + + return nv_connector; +} + static void nv04_display_fini(struct drm_device *dev, bool suspend) { diff --git a/drivers/gpu/drm/nouveau/dispnv04/disp.h b/drivers/gpu/drm/nouveau/dispnv04/disp.h index 495d3284e876..5ace5e906949 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/disp.h +++ b/drivers/gpu/drm/nouveau/dispnv04/disp.h @@ -6,6 +6,8 @@ #include "nouveau_display.h" +struct nouveau_encoder; + enum nv04_fp_display_regs { FP_DISPLAY_END, FP_TOTAL, @@ -93,6 +95,8 @@ nv04_display(struct drm_device *dev) /* nv04_display.c */ int nv04_display_create(struct drm_device *); +struct nouveau_connector * +nv04_encoder_get_connector(struct nouveau_encoder *nv_encoder); /* nv04_crtc.c */ int nv04_crtc_create(struct drm_device *, int index); diff --git a/drivers/gpu/drm/nouveau/dispnv04/tvnv04.c b/drivers/gpu/drm/nouveau/dispnv04/tvnv04.c index b701a4d8fe76..3ba7b59580d5 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/tvnv04.c +++ b/drivers/gpu/drm/nouveau/dispnv04/tvnv04.c @@ -172,7 +172,7 @@ static void nv04_tv_commit(struct drm_encoder *encoder) helper->dpms(encoder, DRM_MODE_DPMS_ON); NV_DEBUG(drm, "Output %s is running on CRTC %d using output %c\n", - nouveau_encoder_connector_get(nv_encoder)->base.name, + nv04_encoder_get_connector(nv_encoder)->base.name, nv_crtc->index, '@' + ffs(nv_encoder->dcb->or)); } diff --git a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c index 3a9489ed6544..be28e7bd7490 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c +++ b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c @@ -599,7 +599,7 @@ static void nv17_tv_commit(struct drm_encoder *encoder) helper->dpms(encoder, DRM_MODE_DPMS_ON); NV_INFO(drm, "Output %s is running on CRTC %d using output %c\n", - nouveau_encoder_connector_get(nv_encoder)->base.name, + nv04_encoder_get_connector(nv_encoder)->base.name, nv_crtc->index, '@' + ffs(nv_encoder->dcb->or)); } diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index c4d138f0ca05..255a281249bc 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -411,6 +411,40 @@ nv50_outp_atomic_check(struct drm_encoder *encoder, return 0; } +struct nouveau_connector * +nv50_outp_get_new_connector(struct nouveau_encoder *outp, + struct drm_atomic_state *state) +{ + struct drm_connector *connector; + struct drm_connector_state *connector_state; + struct drm_encoder *encoder = to_drm_encoder(outp); + int i; + + for_each_new_connector_in_state(state, connector, connector_state, i) { + if (connector_state->best_encoder == encoder) + return nouveau_connector(connector); + } + + return NULL; +} + +struct nouveau_connector * +nv50_outp_get_old_connector(struct nouveau_encoder *outp, + struct drm_atomic_state *state) +{ + struct drm_connector *connector; + struct drm_connector_state *connector_state; + struct drm_encoder *encoder = to_drm_encoder(outp); + int i; + + for_each_old_connector_in_state(state, connector, connector_state, i) { + if (connector_state->best_encoder == encoder) + return nouveau_connector(connector); + } + + return NULL; +} + /****************************************************************************** * DAC *****************************************************************************/ @@ -552,16 +586,31 @@ nv50_audio_component_get_eld(struct device *kdev, int port, int dev_id, struct nouveau_drm *drm = nouveau_drm(drm_dev); struct drm_encoder *encoder; struct nouveau_encoder *nv_encoder; - struct nouveau_connector *nv_connector; + struct drm_connector *connector; struct nouveau_crtc *nv_crtc; + struct drm_connector_list_iter conn_iter; int ret = 0; *enabled = false; + drm_for_each_encoder(encoder, drm->dev) { + struct nouveau_connector *nv_connector = NULL; + nv_encoder = nouveau_encoder(encoder); - nv_connector = nouveau_encoder_connector_get(nv_encoder); + + drm_connector_list_iter_begin(drm_dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { + if (connector->state->best_encoder == encoder) { + nv_connector = nouveau_connector(connector); + break; + } + } + drm_connector_list_iter_end(&conn_iter); + if (!nv_connector) + continue; + nv_crtc = nouveau_crtc(encoder->crtc); - if (!nv_connector || !nv_crtc || nv_encoder->or != port || + if (!nv_crtc || nv_encoder->or != port || nv_crtc->index != dev_id) continue; *enabled = nv_encoder->audio; @@ -572,6 +621,7 @@ nv50_audio_component_get_eld(struct device *kdev, int port, int dev_id, } break; } + return ret; } @@ -665,7 +715,8 @@ nv50_audio_disable(struct drm_encoder *encoder, struct nouveau_crtc *nv_crtc) } static void -nv50_audio_enable(struct drm_encoder *encoder, struct drm_display_mode *mode) +nv50_audio_enable(struct drm_encoder *encoder, struct drm_atomic_state *state, + struct drm_display_mode *mode) { struct nouveau_drm *drm = nouveau_drm(encoder->dev); struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); @@ -686,7 +737,7 @@ nv50_audio_enable(struct drm_encoder *encoder, struct drm_display_mode *mode) (0x0100 << nv_crtc->index), }; - nv_connector = nouveau_encoder_connector_get(nv_encoder); + nv_connector = nv50_outp_get_new_connector(nv_encoder, state); if (!drm_detect_monitor_audio(nv_connector->edid)) return; @@ -723,7 +774,8 @@ nv50_hdmi_disable(struct drm_encoder *encoder, struct nouveau_crtc *nv_crtc) } static void -nv50_hdmi_enable(struct drm_encoder *encoder, struct drm_display_mode *mode) +nv50_hdmi_enable(struct drm_encoder *encoder, struct drm_atomic_state *state, + struct drm_display_mode *mode) { struct nouveau_drm *drm = nouveau_drm(encoder->dev); struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); @@ -752,7 +804,7 @@ nv50_hdmi_enable(struct drm_encoder *encoder, struct drm_display_mode *mode) int ret; int size; - nv_connector = nouveau_encoder_connector_get(nv_encoder); + nv_connector = nv50_outp_get_new_connector(nv_encoder, state); if (!drm_detect_hdmi_monitor(nv_connector->edid)) return; @@ -798,7 +850,7 @@ nv50_hdmi_enable(struct drm_encoder *encoder, struct drm_display_mode *mode) + args.pwr.vendor_infoframe_length; nvif_mthd(&disp->disp->object, 0, &args, size); - nv50_audio_enable(encoder, mode); + nv50_audio_enable(encoder, state, mode); /* If SCDC is supported by the downstream monitor, update * divider / scrambling settings to what we programmed above. @@ -1573,7 +1625,8 @@ nv50_sor_update(struct nouveau_encoder *nv_encoder, u8 head, } static void -nv50_sor_disable(struct drm_encoder *encoder) +nv50_sor_disable(struct drm_encoder *encoder, + struct drm_atomic_state *state) { struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); struct nouveau_crtc *nv_crtc = nouveau_crtc(nv_encoder->crtc); @@ -1601,7 +1654,8 @@ nv50_sor_disable(struct drm_encoder *encoder) } static void -nv50_sor_enable(struct drm_encoder *encoder) +nv50_sor_enable(struct drm_encoder *encoder, + struct drm_atomic_state *state) { struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc); @@ -1625,7 +1679,7 @@ nv50_sor_enable(struct drm_encoder *encoder) u8 proto = NV507D_SOR_SET_CONTROL_PROTOCOL_CUSTOM; u8 depth = NV837D_SOR_SET_CONTROL_PIXEL_DEPTH_DEFAULT; - nv_connector = nouveau_encoder_connector_get(nv_encoder); + nv_connector = nv50_outp_get_new_connector(nv_encoder, state); nv_encoder->crtc = encoder->crtc; if ((disp->disp->object.oclass == GT214_DISP || @@ -1652,7 +1706,7 @@ nv50_sor_enable(struct drm_encoder *encoder) proto = NV507D_SOR_SET_CONTROL_PROTOCOL_SINGLE_TMDS_B; } - nv50_hdmi_enable(&nv_encoder->base.base, mode); + nv50_hdmi_enable(&nv_encoder->base.base, state, mode); break; case DCB_OUTPUT_LVDS: proto = NV507D_SOR_SET_CONTROL_PROTOCOL_LVDS_CUSTOM; @@ -1693,7 +1747,7 @@ nv50_sor_enable(struct drm_encoder *encoder) else proto = NV887D_SOR_SET_CONTROL_PROTOCOL_DP_B; - nv50_audio_enable(encoder, mode); + nv50_audio_enable(encoder, state, mode); break; default: BUG(); @@ -1706,8 +1760,8 @@ nv50_sor_enable(struct drm_encoder *encoder) static const struct drm_encoder_helper_funcs nv50_sor_help = { .atomic_check = nv50_outp_atomic_check, - .enable = nv50_sor_enable, - .disable = nv50_sor_disable, + .atomic_enable = nv50_sor_enable, + .atomic_disable = nv50_sor_disable, }; static void @@ -2066,7 +2120,7 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state) outp->clr.mask, outp->set.mask); if (outp->clr.mask) { - help->disable(encoder); + help->atomic_disable(encoder, state); interlock[NV50_DISP_INTERLOCK_CORE] |= 1; if (outp->flush_disable) { nv50_disp_atomic_commit_wndw(state, interlock); @@ -2105,7 +2159,7 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state) outp->set.mask, outp->clr.mask); if (outp->set.mask) { - help->enable(encoder); + help->atomic_enable(encoder, state); interlock[NV50_DISP_INTERLOCK_CORE] = 1; } diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c index e12957e6faa7..1d5696c39792 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -391,20 +391,6 @@ find_encoder(struct drm_connector *connector, int type) return NULL; } -struct nouveau_connector * -nouveau_encoder_connector_get(struct nouveau_encoder *encoder) -{ - struct drm_device *dev = to_drm_encoder(encoder)->dev; - struct drm_connector *drm_connector; - - list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) { - if (drm_connector->encoder == to_drm_encoder(encoder)) - return nouveau_connector(drm_connector); - } - - return NULL; -} - static void nouveau_connector_destroy(struct drm_connector *connector) { diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h b/drivers/gpu/drm/nouveau/nouveau_encoder.h index 6424cdcb4913..b0e1dad2367d 100644 --- a/drivers/gpu/drm/nouveau/nouveau_encoder.h +++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h @@ -113,7 +113,11 @@ enum drm_mode_status nv50_dp_mode_valid(struct drm_connector *, unsigned *clock); struct nouveau_connector * -nouveau_encoder_connector_get(struct nouveau_encoder *encoder); +nv50_outp_get_new_connector(struct nouveau_encoder *outp, + struct drm_atomic_state *state); +struct nouveau_connector * +nv50_outp_get_old_connector(struct nouveau_encoder *outp, + struct drm_atomic_state *state); int nv50_mstm_detect(struct nv50_mstm *, u8 dpcd[8], int allow); void nv50_mstm_remove(struct nv50_mstm *);