Messages in this thread | | | Date | Wed, 17 Apr 2024 13:22:04 +0300 | Subject | Re: [PATCH v4 4/7] drm: xlnx: zynqmp_dpsub: Anounce supported input formats | From | Tomi Valkeinen <> |
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On 16/04/2024 23:31, Anatoliy Klymenko wrote: > 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 <laurent.pinchart@ideasonboard.com> > Signed-off-by: Anatoliy Klymenko <anatoliy.klymenko@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(-) >
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Tomi
> 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 <linux/dma/xilinx_dpdma.h> > #include <linux/dma-mapping.h> > #include <linux/dmaengine.h> > +#include <linux/media-bus-format.h> > #include <linux/module.h> > #include <linux/of.h> > #include <linux/platform_device.h> > @@ -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 7faeb010e1ae..faaeea526970 100644 > --- a/drivers/gpu/drm/xlnx/zynqmp_dp.c > +++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c > @@ -22,6 +22,7 @@ > #include <linux/delay.h> > #include <linux/device.h> > #include <linux/io.h> > +#include <linux/media-bus-format.h> > #include <linux/module.h> > #include <linux/platform_device.h> > #include <linux/pm_runtime.h> > @@ -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, > }; > > /* ----------------------------------------------------------------------------- >
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