From b0f0469ab662159f182f5af292b71cc5d42468a8 Mon Sep 17 00:00:00 2001 From: Anatoliy Klymenko Date: Tue, 16 Apr 2024 13:31:39 -0700 Subject: drm: xlnx: zynqmp_dpsub: Anounce supported input formats DPSUB in bridge mode supports multiple input media bus formats. Announce the list of supported input media bus formats via drm_bridge.atomic_get_input_bus_fmts callback. Introduce a set of live input formats supported by DPSUB. Add safeguards to format list functions to prevent their misuse in the different layer modes contexts. Reviewed-by: Laurent Pinchart Signed-off-by: Anatoliy Klymenko Reviewed-by: Tomi Valkeinen Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20240416-dp-live-fmt-v4-4-c7f379b7168e@amd.com --- drivers/gpu/drm/xlnx/zynqmp_disp.c | 110 +++++++++++++++++++++++++++++++++++-- drivers/gpu/drm/xlnx/zynqmp_disp.h | 2 + drivers/gpu/drm/xlnx/zynqmp_dp.c | 31 +++++++++++ 3 files changed, 139 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c index 891577475349..24f1f367b1d3 100644 --- a/drivers/gpu/drm/xlnx/zynqmp_disp.c +++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -77,12 +78,14 @@ enum zynqmp_dpsub_layer_mode { /** * struct zynqmp_disp_format - Display subsystem format information * @drm_fmt: DRM format (4CC) + * @bus_fmt: Media bus format * @buf_fmt: AV buffer format * @swap: Flag to swap R & B for RGB formats, and U & V for YUV formats * @sf: Scaling factors for color components */ struct zynqmp_disp_format { u32 drm_fmt; + u32 bus_fmt; u32 buf_fmt; bool swap; const u32 *sf; @@ -182,6 +185,12 @@ static const u32 scaling_factors_565[] = { ZYNQMP_DISP_AV_BUF_5BIT_SF, }; +static const u32 scaling_factors_666[] = { + ZYNQMP_DISP_AV_BUF_6BIT_SF, + ZYNQMP_DISP_AV_BUF_6BIT_SF, + ZYNQMP_DISP_AV_BUF_6BIT_SF, +}; + static const u32 scaling_factors_888[] = { ZYNQMP_DISP_AV_BUF_8BIT_SF, ZYNQMP_DISP_AV_BUF_8BIT_SF, @@ -364,6 +373,41 @@ static const struct zynqmp_disp_format avbuf_gfx_fmts[] = { }, }; +/* List of live video layer formats */ +static const struct zynqmp_disp_format avbuf_live_fmts[] = { + { + .drm_fmt = DRM_FORMAT_RGB565, + .bus_fmt = MEDIA_BUS_FMT_RGB666_1X18, + .buf_fmt = ZYNQMP_DISP_AV_BUF_LIVE_CONFIG_BPC_6 | + ZYNQMP_DISP_AV_BUF_LIVE_CONFIG_FMT_RGB, + .sf = scaling_factors_666, + }, { + .drm_fmt = DRM_FORMAT_RGB888, + .bus_fmt = MEDIA_BUS_FMT_RGB888_1X24, + .buf_fmt = ZYNQMP_DISP_AV_BUF_LIVE_CONFIG_BPC_8 | + ZYNQMP_DISP_AV_BUF_LIVE_CONFIG_FMT_RGB, + .sf = scaling_factors_888, + }, { + .drm_fmt = DRM_FORMAT_YUV422, + .bus_fmt = MEDIA_BUS_FMT_UYVY8_1X16, + .buf_fmt = ZYNQMP_DISP_AV_BUF_LIVE_CONFIG_BPC_8 | + ZYNQMP_DISP_AV_BUF_LIVE_CONFIG_FMT_YUV422, + .sf = scaling_factors_888, + }, { + .drm_fmt = DRM_FORMAT_YUV444, + .bus_fmt = MEDIA_BUS_FMT_VUY8_1X24, + .buf_fmt = ZYNQMP_DISP_AV_BUF_LIVE_CONFIG_BPC_8 | + ZYNQMP_DISP_AV_BUF_LIVE_CONFIG_FMT_YUV444, + .sf = scaling_factors_888, + }, { + .drm_fmt = DRM_FORMAT_P210, + .bus_fmt = MEDIA_BUS_FMT_UYVY10_1X20, + .buf_fmt = ZYNQMP_DISP_AV_BUF_LIVE_CONFIG_BPC_10 | + ZYNQMP_DISP_AV_BUF_LIVE_CONFIG_FMT_YUV422, + .sf = scaling_factors_101010, + }, +}; + static u32 zynqmp_disp_avbuf_read(struct zynqmp_disp *disp, int reg) { return readl(disp->avbuf.base + reg); @@ -887,6 +931,11 @@ zynqmp_disp_layer_find_format(struct zynqmp_disp_layer *layer, * @layer: The layer * @num_formats: Pointer to the returned number of formats * + * NOTE: This function doesn't make sense for live video layers and will + * always return an empty list in such cases. zynqmp_disp_live_layer_formats() + * should be used to query a list of media bus formats supported by the live + * video input layer. + * * Return: A newly allocated u32 array that stores all the DRM formats * supported by the layer. The number of formats in the array is returned * through the num_formats argument. @@ -897,10 +946,17 @@ u32 *zynqmp_disp_layer_drm_formats(struct zynqmp_disp_layer *layer, unsigned int i; u32 *formats; + if (WARN_ON(!layer->mode == ZYNQMP_DPSUB_LAYER_NONLIVE)) { + *num_formats = 0; + return NULL; + } + formats = kcalloc(layer->info->num_formats, sizeof(*formats), GFP_KERNEL); - if (!formats) + if (!formats) { + *num_formats = 0; return NULL; + } for (i = 0; i < layer->info->num_formats; ++i) formats[i] = layer->info->formats[i].drm_fmt; @@ -909,6 +965,43 @@ u32 *zynqmp_disp_layer_drm_formats(struct zynqmp_disp_layer *layer, return formats; } +/** + * zynqmp_disp_live_layer_formats - Return the media bus formats supported by + * the live video layer + * @layer: The layer + * @num_formats: Pointer to the returned number of formats + * + * NOTE: This function should be used only for live video input layers. + * + * Return: A newly allocated u32 array of media bus formats supported by the + * layer. The number of formats in the array is returned through the + * @num_formats argument. + */ +u32 *zynqmp_disp_live_layer_formats(struct zynqmp_disp_layer *layer, + unsigned int *num_formats) +{ + unsigned int i; + u32 *formats; + + if (WARN_ON(layer->mode != ZYNQMP_DPSUB_LAYER_LIVE)) { + *num_formats = 0; + return NULL; + } + + formats = kcalloc(layer->info->num_formats, sizeof(*formats), + GFP_KERNEL); + if (!formats) { + *num_formats = 0; + return NULL; + } + + for (i = 0; i < layer->info->num_formats; ++i) + formats[i] = layer->info->formats[i].bus_fmt; + + *num_formats = layer->info->num_formats; + return formats; +} + /** * zynqmp_disp_layer_enable - Enable a layer * @layer: The layer @@ -1131,6 +1224,11 @@ static int zynqmp_disp_create_layers(struct zynqmp_disp *disp) .num_channels = 1, }, }; + static const struct zynqmp_disp_layer_info live_layer_info = { + .formats = avbuf_live_fmts, + .num_formats = ARRAY_SIZE(avbuf_live_fmts), + .num_channels = 0, + }; unsigned int i; int ret; @@ -1140,13 +1238,17 @@ static int zynqmp_disp_create_layers(struct zynqmp_disp *disp) layer->id = i; layer->disp = disp; - layer->info = &layer_info[i]; /* * For now assume dpsub works in either live or non-live mode for both layers. * Hybrid mode is not supported yet. */ - layer->mode = disp->dpsub->dma_enabled ? ZYNQMP_DPSUB_LAYER_NONLIVE - : ZYNQMP_DPSUB_LAYER_LIVE; + if (disp->dpsub->dma_enabled) { + layer->mode = ZYNQMP_DPSUB_LAYER_NONLIVE; + layer->info = &layer_info[i]; + } else { + layer->mode = ZYNQMP_DPSUB_LAYER_LIVE; + layer->info = &live_layer_info; + } ret = zynqmp_disp_layer_request_dma(disp, layer); if (ret) diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.h b/drivers/gpu/drm/xlnx/zynqmp_disp.h index 9b8b202224d9..efd1c52c2916 100644 --- a/drivers/gpu/drm/xlnx/zynqmp_disp.h +++ b/drivers/gpu/drm/xlnx/zynqmp_disp.h @@ -52,6 +52,8 @@ void zynqmp_disp_blend_set_global_alpha(struct zynqmp_disp *disp, u32 *zynqmp_disp_layer_drm_formats(struct zynqmp_disp_layer *layer, unsigned int *num_formats); +u32 *zynqmp_disp_live_layer_formats(struct zynqmp_disp_layer *layer, + unsigned int *num_formats); void zynqmp_disp_layer_enable(struct zynqmp_disp_layer *layer); void zynqmp_disp_layer_disable(struct zynqmp_disp_layer *layer); void zynqmp_disp_layer_set_format(struct zynqmp_disp_layer *layer, diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c index 76fa7b3258a2..dd4b083b157e 100644 --- a/drivers/gpu/drm/xlnx/zynqmp_dp.c +++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -1577,6 +1578,35 @@ static const struct drm_edid *zynqmp_dp_bridge_edid_read(struct drm_bridge *brid return drm_edid_read_ddc(connector, &dp->aux.ddc); } +static u32 *zynqmp_dp_bridge_default_bus_fmts(unsigned int *num_input_fmts) +{ + u32 *formats = kzalloc(sizeof(*formats), GFP_KERNEL); + + if (formats) + *formats = MEDIA_BUS_FMT_FIXED; + *num_input_fmts = !!formats; + + return formats; +} + +static u32 * +zynqmp_dp_bridge_get_input_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts) +{ + struct zynqmp_dp *dp = bridge_to_dp(bridge); + struct zynqmp_disp_layer *layer; + + layer = zynqmp_dp_disp_connected_live_layer(dp); + if (layer) + return zynqmp_disp_live_layer_formats(layer, num_input_fmts); + else + return zynqmp_dp_bridge_default_bus_fmts(num_input_fmts); +} + static const struct drm_bridge_funcs zynqmp_dp_bridge_funcs = { .attach = zynqmp_dp_bridge_attach, .detach = zynqmp_dp_bridge_detach, @@ -1589,6 +1619,7 @@ static const struct drm_bridge_funcs zynqmp_dp_bridge_funcs = { .atomic_check = zynqmp_dp_bridge_atomic_check, .detect = zynqmp_dp_bridge_detect, .edid_read = zynqmp_dp_bridge_edid_read, + .atomic_get_input_bus_fmts = zynqmp_dp_bridge_get_input_bus_fmts, }; /* ----------------------------------------------------------------------------- -- cgit v1.2.3