Maxime Ripard
2022-Oct-13 13:19 UTC
[Nouveau] [PATCH v5 20/22] drm/vc4: vec: Convert to the new TV mode property
Now that the core can deal fine with analog TV modes, let's convert the vc4 VEC driver to leverage those new features. We've added some backward compatibility to support the old TV mode property and translate it into the new TV norm property. We're also making use of the new analog TV atomic_check helper to make sure we trigger a modeset whenever the TV mode is updated. Acked-by: Noralf Tr?nnes <noralf at tronnes.org> Signed-off-by: Maxime Ripard <maxime at cerno.tech> --- Changes in v5: - Renamed tv_mode_names into legacy_tv_mode_names Changes in v4: - Removed the count variable in .get_modes --- drivers/gpu/drm/vc4/vc4_vec.c | 193 +++++++++++++++++++++++++++++++----------- 1 file changed, 145 insertions(+), 48 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c index 1fcb7baf874e..456689b45849 100644 --- a/drivers/gpu/drm/vc4/vc4_vec.c +++ b/drivers/gpu/drm/vc4/vc4_vec.c @@ -172,6 +172,8 @@ struct vc4_vec { struct clk *clock; + struct drm_property *legacy_tv_mode_property; + struct debugfs_regset32 regset; }; @@ -184,6 +186,12 @@ encoder_to_vc4_vec(struct drm_encoder *encoder) return container_of(encoder, struct vc4_vec, encoder.base); } +static inline struct vc4_vec * +connector_to_vc4_vec(struct drm_connector *connector) +{ + return container_of(connector, struct vc4_vec, connector); +} + enum vc4_vec_tv_mode_id { VC4_VEC_TV_MODE_NTSC, VC4_VEC_TV_MODE_NTSC_J, @@ -192,7 +200,7 @@ enum vc4_vec_tv_mode_id { }; struct vc4_vec_tv_mode { - const struct drm_display_mode *mode; + unsigned int mode; u32 config0; u32 config1; u32 custom_freq; @@ -225,43 +233,51 @@ static const struct debugfs_reg32 vec_regs[] = { VC4_REG32(VEC_DAC_MISC), }; -static const struct drm_display_mode ntsc_mode = { - DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 13500, - 720, 720 + 14, 720 + 14 + 64, 720 + 14 + 64 + 60, 0, - 480, 480 + 7, 480 + 7 + 6, 525, 0, - DRM_MODE_FLAG_INTERLACE) -}; - -static const struct drm_display_mode pal_mode = { - DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 13500, - 720, 720 + 20, 720 + 20 + 64, 720 + 20 + 64 + 60, 0, - 576, 576 + 4, 576 + 4 + 6, 625, 0, - DRM_MODE_FLAG_INTERLACE) -}; - static const struct vc4_vec_tv_mode vc4_vec_tv_modes[] = { - [VC4_VEC_TV_MODE_NTSC] = { - .mode = &ntsc_mode, + { + .mode = DRM_MODE_TV_MODE_NTSC, .config0 = VEC_CONFIG0_NTSC_STD | VEC_CONFIG0_PDEN, .config1 = VEC_CONFIG1_C_CVBS_CVBS, }, - [VC4_VEC_TV_MODE_NTSC_J] = { - .mode = &ntsc_mode, + { + .mode = DRM_MODE_TV_MODE_NTSC_J, .config0 = VEC_CONFIG0_NTSC_STD, .config1 = VEC_CONFIG1_C_CVBS_CVBS, }, - [VC4_VEC_TV_MODE_PAL] = { - .mode = &pal_mode, + { + .mode = DRM_MODE_TV_MODE_PAL, .config0 = VEC_CONFIG0_PAL_BDGHI_STD, .config1 = VEC_CONFIG1_C_CVBS_CVBS, }, - [VC4_VEC_TV_MODE_PAL_M] = { - .mode = &ntsc_mode, + { + .mode = DRM_MODE_TV_MODE_PAL_M, .config0 = VEC_CONFIG0_PAL_M_STD, .config1 = VEC_CONFIG1_C_CVBS_CVBS, }, }; +static inline const struct vc4_vec_tv_mode * +vc4_vec_tv_mode_lookup(unsigned int mode) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(vc4_vec_tv_modes); i++) { + const struct vc4_vec_tv_mode *tv_mode = &vc4_vec_tv_modes[i]; + + if (tv_mode->mode == mode) + return tv_mode; + } + + return NULL; +} + +static const struct drm_prop_enum_list legacy_tv_mode_names[] = { + { VC4_VEC_TV_MODE_NTSC, "NTSC", }, + { VC4_VEC_TV_MODE_NTSC_J, "NTSC-J", }, + { VC4_VEC_TV_MODE_PAL, "PAL", }, + { VC4_VEC_TV_MODE_PAL_M, "PAL-M", }, +}; + static enum drm_connector_status vc4_vec_connector_detect(struct drm_connector *connector, bool force) { @@ -276,19 +292,96 @@ static void vc4_vec_connector_reset(struct drm_connector *connector) static int vc4_vec_connector_get_modes(struct drm_connector *connector) { - struct drm_connector_state *state = connector->state; struct drm_display_mode *mode; - mode = drm_mode_duplicate(connector->dev, - vc4_vec_tv_modes[state->tv.legacy_mode].mode); + mode = drm_mode_analog_ntsc_480i(connector->dev); if (!mode) { DRM_ERROR("Failed to create a new display mode\n"); return -ENOMEM; } + mode->type |= DRM_MODE_TYPE_PREFERRED; drm_mode_probed_add(connector, mode); - return 1; + mode = drm_mode_analog_pal_576i(connector->dev); + if (!mode) { + DRM_ERROR("Failed to create a new display mode\n"); + return -ENOMEM; + } + + drm_mode_probed_add(connector, mode); + + return 2; +} + +static int +vc4_vec_connector_set_property(struct drm_connector *connector, + struct drm_connector_state *state, + struct drm_property *property, + uint64_t val) +{ + struct vc4_vec *vec = connector_to_vc4_vec(connector); + + if (property != vec->legacy_tv_mode_property) + return -EINVAL; + + switch (val) { + case VC4_VEC_TV_MODE_NTSC: + state->tv.mode = DRM_MODE_TV_MODE_NTSC; + break; + + case VC4_VEC_TV_MODE_NTSC_J: + state->tv.mode = DRM_MODE_TV_MODE_NTSC_J; + break; + + case VC4_VEC_TV_MODE_PAL: + state->tv.mode = DRM_MODE_TV_MODE_PAL; + break; + + case VC4_VEC_TV_MODE_PAL_M: + state->tv.mode = DRM_MODE_TV_MODE_PAL_M; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int +vc4_vec_connector_get_property(struct drm_connector *connector, + const struct drm_connector_state *state, + struct drm_property *property, + uint64_t *val) +{ + struct vc4_vec *vec = connector_to_vc4_vec(connector); + + if (property != vec->legacy_tv_mode_property) + return -EINVAL; + + switch (state->tv.mode) { + case DRM_MODE_TV_MODE_NTSC: + *val = VC4_VEC_TV_MODE_NTSC; + break; + + case DRM_MODE_TV_MODE_NTSC_J: + *val = VC4_VEC_TV_MODE_NTSC_J; + break; + + case DRM_MODE_TV_MODE_PAL: + *val = VC4_VEC_TV_MODE_PAL; + break; + + case DRM_MODE_TV_MODE_PAL_M: + *val = VC4_VEC_TV_MODE_PAL_M; + break; + + default: + return -EINVAL; + } + + return 0; } static const struct drm_connector_funcs vc4_vec_connector_funcs = { @@ -297,15 +390,19 @@ static const struct drm_connector_funcs vc4_vec_connector_funcs = { .reset = vc4_vec_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, + .atomic_get_property = vc4_vec_connector_get_property, + .atomic_set_property = vc4_vec_connector_set_property, }; static const struct drm_connector_helper_funcs vc4_vec_connector_helper_funcs = { + .atomic_check = drm_atomic_helper_connector_tv_check, .get_modes = vc4_vec_connector_get_modes, }; static int vc4_vec_connector_init(struct drm_device *dev, struct vc4_vec *vec) { struct drm_connector *connector = &vec->connector; + struct drm_property *prop; int ret; connector->interlace_allowed = true; @@ -318,8 +415,17 @@ static int vc4_vec_connector_init(struct drm_device *dev, struct vc4_vec *vec) drm_connector_helper_add(connector, &vc4_vec_connector_helper_funcs); drm_object_attach_property(&connector->base, - dev->mode_config.legacy_tv_mode_property, - VC4_VEC_TV_MODE_NTSC); + dev->mode_config.tv_mode_property, + DRM_MODE_TV_MODE_NTSC); + + prop = drm_property_create_enum(dev, 0, "mode", + legacy_tv_mode_names, + ARRAY_SIZE(legacy_tv_mode_names)); + if (!prop) + return -ENOMEM; + vec->legacy_tv_mode_property = prop; + + drm_object_attach_property(&connector->base, prop, VC4_VEC_TV_MODE_NTSC); drm_connector_attach_encoder(connector, &vec->encoder.base); @@ -366,13 +472,16 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder, struct drm_connector *connector = &vec->connector; struct drm_connector_state *conn_state drm_atomic_get_new_connector_state(state, connector); - const struct vc4_vec_tv_mode *tv_mode - &vc4_vec_tv_modes[conn_state->tv.legacy_mode]; + const struct vc4_vec_tv_mode *tv_mode; int idx, ret; if (!drm_dev_enter(drm, &idx)) return; + tv_mode = vc4_vec_tv_mode_lookup(conn_state->tv.mode); + if (!tv_mode) + goto err_dev_exit; + ret = pm_runtime_get_sync(&vec->pdev->dev); if (ret < 0) { DRM_ERROR("Failed to retain power domain: %d\n", ret); @@ -454,13 +563,6 @@ static int vc4_vec_encoder_atomic_check(struct drm_encoder *encoder, struct drm_connector_state *conn_state) { const struct drm_display_mode *mode = &crtc_state->adjusted_mode; - const struct vc4_vec_tv_mode *vec_mode; - - vec_mode = &vc4_vec_tv_modes[conn_state->tv.legacy_mode]; - - if (conn_state->crtc && - !drm_mode_equal(vec_mode->mode, &crtc_state->adjusted_mode)) - return -EINVAL; if (mode->crtc_hdisplay % 4) return -EINVAL; @@ -554,13 +656,6 @@ static const struct of_device_id vc4_vec_dt_match[] = { { /* sentinel */ }, }; -static const char * const tv_mode_names[] = { - [VC4_VEC_TV_MODE_NTSC] = "NTSC", - [VC4_VEC_TV_MODE_NTSC_J] = "NTSC-J", - [VC4_VEC_TV_MODE_PAL] = "PAL", - [VC4_VEC_TV_MODE_PAL_M] = "PAL-M", -}; - static int vc4_vec_bind(struct device *dev, struct device *master, void *data) { struct platform_device *pdev = to_platform_device(dev); @@ -568,9 +663,11 @@ static int vc4_vec_bind(struct device *dev, struct device *master, void *data) struct vc4_vec *vec; int ret; - ret = drm_mode_create_tv_properties_legacy(drm, - ARRAY_SIZE(tv_mode_names), - tv_mode_names); + ret = drm_mode_create_tv_properties(drm, + BIT(DRM_MODE_TV_MODE_NTSC) | + BIT(DRM_MODE_TV_MODE_NTSC_J) | + BIT(DRM_MODE_TV_MODE_PAL) | + BIT(DRM_MODE_TV_MODE_PAL_M)); if (ret) return ret; -- b4 0.11.0-dev-7da52
Mateusz Kwiatkowski
2022-Oct-16 18:52 UTC
[Nouveau] [PATCH v5 20/22] drm/vc4: vec: Convert to the new TV mode property
Hi Maxime,> static int vc4_vec_connector_get_modes(struct drm_connector *connector) > { > - struct drm_connector_state *state = connector->state; > struct drm_display_mode *mode; > > - mode = drm_mode_duplicate(connector->dev, > - vc4_vec_tv_modes[state->tv.legacy_mode].mode); > + mode = drm_mode_analog_ntsc_480i(connector->dev); > if (!mode) { > DRM_ERROR("Failed to create a new display mode\n"); > return -ENOMEM; > } > > + mode->type |= DRM_MODE_TYPE_PREFERRED; > drm_mode_probed_add(connector, mode); > > - return 1; > + mode = drm_mode_analog_pal_576i(connector->dev); > + if (!mode) { > + DRM_ERROR("Failed to create a new display mode\n"); > + return -ENOMEM; > + } > + > + drm_mode_probed_add(connector, mode); > + > + return 2; > +}Referencing those previous discussions: - https://lore.kernel.org/dri-devel/0255f7c6-0484-6456-350d-cf24f3fee5d6 at tronnes.org/ - https://lore.kernel.org/dri-devel/c8f8015a-75da-afa8-ca7f-b2b134cacd16 at gmail.com/ Unconditionally setting the 480i mode as DRM_MODE_TYPE_PREFERRED causes Xorg (at least on current Raspberry Pi OS) to display garbage when video=Composite1:PAL is specified on the command line, so I'm afraid this won't do. As I see it, there are three viable solutions for this issue: a) Somehow query the video= command line option from this function, and set DRM_MODE_TYPE_PREFERRED appropriately. This would break the abstraction provided by global DRM code, but should work fine. b) Modify drm_helper_probe_add_cmdline_mode() so that it sets DRM_MODE_TYPE_PREFERRED in addition to DRM_MODE_TYPE_USERDEF. This seems pretty robust, but affects the entire DRM subsystem, which may break userspace in different ways. - Maybe this could be mitigated by adding some additional conditions, e.g. setting the PREFERRED flag only if no modes are already flagged as such and/or only if the cmdline mode is a named one (~= analog TV mode) c) Forcing userspace (Xorg / Raspberry Pi OS) to get fixed and honor the USERDEF flag. Either way, hardcoding 480i as PREFERRED does not seem right. Note: this also applies to the sun4i version (patch 22/22).> @@ -366,13 +472,16 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder, > struct drm_connector *connector = &vec->connector; > struct drm_connector_state *conn_state > drm_atomic_get_new_connector_state(state, connector); > - const struct vc4_vec_tv_mode *tv_mode > - &vc4_vec_tv_modes[conn_state->tv.legacy_mode]; > + const struct vc4_vec_tv_mode *tv_mode; > int idx, ret; > > if (!drm_dev_enter(drm, &idx)) > return; > > + tv_mode = vc4_vec_tv_mode_lookup(conn_state->tv.mode); > + if (!tv_mode) > + goto err_dev_exit; > + > ret = pm_runtime_get_sync(&vec->pdev->dev); > if (ret < 0) { > DRM_ERROR("Failed to retain power domain: %d\n", ret);If this (!tv_mode) condition is somehow triggered, the power management goes somewhat crazy. vc4_vec_encoder_enable() cannot return an error, so when vc4_vec_encoder_disable() is eventually called after a failed enable, it hangs in pm_runtime_put() for quite a bit. At least I think that's what's happening. Anyway, to solve this, I'd propose this thing below: Best regards, Mateusz Kwiatkowski
Noralf Trønnes
2022-Oct-17 11:39 UTC
[Nouveau] [PATCH v5 20/22] drm/vc4: vec: Convert to the new TV mode property
Den 13.10.2022 15.19, skrev Maxime Ripard:> Now that the core can deal fine with analog TV modes, let's convert the vc4 > VEC driver to leverage those new features. > > We've added some backward compatibility to support the old TV mode property > and translate it into the new TV norm property. We're also making use of > the new analog TV atomic_check helper to make sure we trigger a modeset > whenever the TV mode is updated. > > Acked-by: Noralf Tr?nnes <noralf at tronnes.org> > Signed-off-by: Maxime Ripard <maxime at cerno.tech> > > ---> @@ -276,19 +292,96 @@ static void vc4_vec_connector_reset(struct drm_connector *connector) > > static int vc4_vec_connector_get_modes(struct drm_connector *connector) > { > - struct drm_connector_state *state = connector->state; > struct drm_display_mode *mode; > > - mode = drm_mode_duplicate(connector->dev, > - vc4_vec_tv_modes[state->tv.legacy_mode].mode); > + mode = drm_mode_analog_ntsc_480i(connector->dev); > if (!mode) { > DRM_ERROR("Failed to create a new display mode\n"); > return -ENOMEM; > } > > + mode->type |= DRM_MODE_TYPE_PREFERRED; > drm_mode_probed_add(connector, mode); > > - return 1; > + mode = drm_mode_analog_pal_576i(connector->dev); > + if (!mode) { > + DRM_ERROR("Failed to create a new display mode\n"); > + return -ENOMEM;I just remembered that you can't return an error from .get_modes, it should only return the number of modes added. From doc: * RETURNS: * * The number of modes added by calling drm_mode_probed_add(). See also the use of count in drm_helper_probe_single_connector_modes(). Patch 14 and 22 has the same issue. Noralf.> + } > + > + drm_mode_probed_add(connector, mode); > + > + return 2; > +} > + > +static int > +vc4_vec_connector_set_property(struct drm_connector *connector, > + struct drm_connector_state *state, > + struct drm_property *property, > + uint64_t val) > +{ > + struct vc4_vec *vec = connector_to_vc4_vec(connector); > + > + if (property != vec->legacy_tv_mode_property) > + return -EINVAL; > + > + switch (val) { > + case VC4_VEC_TV_MODE_NTSC: > + state->tv.mode = DRM_MODE_TV_MODE_NTSC; > + break; > + > + case VC4_VEC_TV_MODE_NTSC_J: > + state->tv.mode = DRM_MODE_TV_MODE_NTSC_J; > + break; > + > + case VC4_VEC_TV_MODE_PAL: > + state->tv.mode = DRM_MODE_TV_MODE_PAL; > + break; > + > + case VC4_VEC_TV_MODE_PAL_M: > + state->tv.mode = DRM_MODE_TV_MODE_PAL_M; > + break; > + > + default: > + return -EINVAL; > + } > + > + return 0; > +} > + > +static int > +vc4_vec_connector_get_property(struct drm_connector *connector, > + const struct drm_connector_state *state, > + struct drm_property *property, > + uint64_t *val) > +{ > + struct vc4_vec *vec = connector_to_vc4_vec(connector); > + > + if (property != vec->legacy_tv_mode_property) > + return -EINVAL; > + > + switch (state->tv.mode) { > + case DRM_MODE_TV_MODE_NTSC: > + *val = VC4_VEC_TV_MODE_NTSC; > + break; > + > + case DRM_MODE_TV_MODE_NTSC_J: > + *val = VC4_VEC_TV_MODE_NTSC_J; > + break; > + > + case DRM_MODE_TV_MODE_PAL: > + *val = VC4_VEC_TV_MODE_PAL; > + break; > + > + case DRM_MODE_TV_MODE_PAL_M: > + *val = VC4_VEC_TV_MODE_PAL_M; > + break; > + > + default: > + return -EINVAL; > + } > + > + return 0; > } > > static const struct drm_connector_funcs vc4_vec_connector_funcs = { > @@ -297,15 +390,19 @@ static const struct drm_connector_funcs vc4_vec_connector_funcs = { > .reset = vc4_vec_connector_reset, > .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, > .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, > + .atomic_get_property = vc4_vec_connector_get_property, > + .atomic_set_property = vc4_vec_connector_set_property, > }; > > static const struct drm_connector_helper_funcs vc4_vec_connector_helper_funcs = { > + .atomic_check = drm_atomic_helper_connector_tv_check, > .get_modes = vc4_vec_connector_get_modes, > }; > > static int vc4_vec_connector_init(struct drm_device *dev, struct vc4_vec *vec) > { > struct drm_connector *connector = &vec->connector; > + struct drm_property *prop; > int ret; > > connector->interlace_allowed = true; > @@ -318,8 +415,17 @@ static int vc4_vec_connector_init(struct drm_device *dev, struct vc4_vec *vec) > drm_connector_helper_add(connector, &vc4_vec_connector_helper_funcs); > > drm_object_attach_property(&connector->base, > - dev->mode_config.legacy_tv_mode_property, > - VC4_VEC_TV_MODE_NTSC); > + dev->mode_config.tv_mode_property, > + DRM_MODE_TV_MODE_NTSC); > + > + prop = drm_property_create_enum(dev, 0, "mode", > + legacy_tv_mode_names, > + ARRAY_SIZE(legacy_tv_mode_names)); > + if (!prop) > + return -ENOMEM; > + vec->legacy_tv_mode_property = prop; > + > + drm_object_attach_property(&connector->base, prop, VC4_VEC_TV_MODE_NTSC); > > drm_connector_attach_encoder(connector, &vec->encoder.base); > > @@ -366,13 +472,16 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder, > struct drm_connector *connector = &vec->connector; > struct drm_connector_state *conn_state > drm_atomic_get_new_connector_state(state, connector); > - const struct vc4_vec_tv_mode *tv_mode > - &vc4_vec_tv_modes[conn_state->tv.legacy_mode]; > + const struct vc4_vec_tv_mode *tv_mode; > int idx, ret; > > if (!drm_dev_enter(drm, &idx)) > return; > > + tv_mode = vc4_vec_tv_mode_lookup(conn_state->tv.mode); > + if (!tv_mode) > + goto err_dev_exit; > + > ret = pm_runtime_get_sync(&vec->pdev->dev); > if (ret < 0) { > DRM_ERROR("Failed to retain power domain: %d\n", ret); > @@ -454,13 +563,6 @@ static int vc4_vec_encoder_atomic_check(struct drm_encoder *encoder, > struct drm_connector_state *conn_state) > { > const struct drm_display_mode *mode = &crtc_state->adjusted_mode; > - const struct vc4_vec_tv_mode *vec_mode; > - > - vec_mode = &vc4_vec_tv_modes[conn_state->tv.legacy_mode]; > - > - if (conn_state->crtc && > - !drm_mode_equal(vec_mode->mode, &crtc_state->adjusted_mode)) > - return -EINVAL; > > if (mode->crtc_hdisplay % 4) > return -EINVAL; > @@ -554,13 +656,6 @@ static const struct of_device_id vc4_vec_dt_match[] = { > { /* sentinel */ }, > }; > > -static const char * const tv_mode_names[] = { > - [VC4_VEC_TV_MODE_NTSC] = "NTSC", > - [VC4_VEC_TV_MODE_NTSC_J] = "NTSC-J", > - [VC4_VEC_TV_MODE_PAL] = "PAL", > - [VC4_VEC_TV_MODE_PAL_M] = "PAL-M", > -}; > - > static int vc4_vec_bind(struct device *dev, struct device *master, void *data) > { > struct platform_device *pdev = to_platform_device(dev); > @@ -568,9 +663,11 @@ static int vc4_vec_bind(struct device *dev, struct device *master, void *data) > struct vc4_vec *vec; > int ret; > > - ret = drm_mode_create_tv_properties_legacy(drm, > - ARRAY_SIZE(tv_mode_names), > - tv_mode_names); > + ret = drm_mode_create_tv_properties(drm, > + BIT(DRM_MODE_TV_MODE_NTSC) | > + BIT(DRM_MODE_TV_MODE_NTSC_J) | > + BIT(DRM_MODE_TV_MODE_PAL) | > + BIT(DRM_MODE_TV_MODE_PAL_M)); > if (ret) > return ret; > >