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- // SPDX-License-Identifier: GPL-2.0-or-later
- /*
- * Copyright (C) Jernej Skrabec <jernej.skrabec@siol.net>
- */
- #include <drm/drm_atomic.h>
- #include <drm/drm_atomic_helper.h>
- #include <drm/drm_crtc.h>
- #include <drm/drm_fb_cma_helper.h>
- #include <drm/drm_gem_cma_helper.h>
- #include <drm/drm_gem_framebuffer_helper.h>
- #include <drm/drm_plane_helper.h>
- #include <drm/drm_probe_helper.h>
- #include "sun8i_csc.h"
- #include "sun8i_mixer.h"
- #include "sun8i_vi_layer.h"
- #include "sun8i_vi_scaler.h"
- static void sun8i_vi_layer_enable(struct sun8i_mixer *mixer, int channel,
- int overlay, bool enable, unsigned int zpos,
- unsigned int old_zpos)
- {
- u32 val, bld_base, ch_base;
- bld_base = sun8i_blender_base(mixer);
- ch_base = sun8i_channel_base(mixer, channel);
- DRM_DEBUG_DRIVER("%sabling VI channel %d overlay %d\n",
- enable ? "En" : "Dis", channel, overlay);
- if (enable)
- val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN;
- else
- val = 0;
- regmap_update_bits(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
- SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN, val);
- if (!enable || zpos != old_zpos) {
- regmap_update_bits(mixer->engine.regs,
- SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
- SUN8I_MIXER_BLEND_PIPE_CTL_EN(old_zpos),
- 0);
- regmap_update_bits(mixer->engine.regs,
- SUN8I_MIXER_BLEND_ROUTE(bld_base),
- SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(old_zpos),
- 0);
- }
- if (enable) {
- val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos);
- regmap_update_bits(mixer->engine.regs,
- SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
- val, val);
- val = channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos);
- regmap_update_bits(mixer->engine.regs,
- SUN8I_MIXER_BLEND_ROUTE(bld_base),
- SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(zpos),
- val);
- }
- }
- static int sun8i_vi_layer_update_coord(struct sun8i_mixer *mixer, int channel,
- int overlay, struct drm_plane *plane,
- unsigned int zpos)
- {
- struct drm_plane_state *state = plane->state;
- const struct drm_format_info *format = state->fb->format;
- u32 src_w, src_h, dst_w, dst_h;
- u32 bld_base, ch_base;
- u32 outsize, insize;
- u32 hphase, vphase;
- u32 hn = 0, hm = 0;
- u32 vn = 0, vm = 0;
- bool subsampled;
- DRM_DEBUG_DRIVER("Updating VI channel %d overlay %d\n",
- channel, overlay);
- bld_base = sun8i_blender_base(mixer);
- ch_base = sun8i_channel_base(mixer, channel);
- src_w = drm_rect_width(&state->src) >> 16;
- src_h = drm_rect_height(&state->src) >> 16;
- dst_w = drm_rect_width(&state->dst);
- dst_h = drm_rect_height(&state->dst);
- hphase = state->src.x1 & 0xffff;
- vphase = state->src.y1 & 0xffff;
- /* make coordinates dividable by subsampling factor */
- if (format->hsub > 1) {
- int mask, remainder;
- mask = format->hsub - 1;
- remainder = (state->src.x1 >> 16) & mask;
- src_w = (src_w + remainder) & ~mask;
- hphase += remainder << 16;
- }
- if (format->vsub > 1) {
- int mask, remainder;
- mask = format->vsub - 1;
- remainder = (state->src.y1 >> 16) & mask;
- src_h = (src_h + remainder) & ~mask;
- vphase += remainder << 16;
- }
- insize = SUN8I_MIXER_SIZE(src_w, src_h);
- outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
- /* Set height and width */
- DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
- (state->src.x1 >> 16) & ~(format->hsub - 1),
- (state->src.y1 >> 16) & ~(format->vsub - 1));
- DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h);
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_LAYER_SIZE(ch_base, overlay),
- insize);
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_OVL_SIZE(ch_base),
- insize);
- /*
- * Scaler must be enabled for subsampled formats, so it scales
- * chroma to same size as luma.
- */
- subsampled = format->hsub > 1 || format->vsub > 1;
- if (insize != outsize || subsampled || hphase || vphase) {
- unsigned int scanline, required;
- struct drm_display_mode *mode;
- u32 hscale, vscale, fps;
- u64 ability;
- DRM_DEBUG_DRIVER("HW scaling is enabled\n");
- mode = &plane->state->crtc->state->mode;
- fps = (mode->clock * 1000) / (mode->vtotal * mode->htotal);
- ability = clk_get_rate(mixer->mod_clk);
- /* BSP algorithm assumes 80% efficiency of VI scaler unit */
- ability *= 80;
- do_div(ability, mode->vdisplay * fps * max(src_w, dst_w));
- required = src_h * 100 / dst_h;
- if (ability < required) {
- DRM_DEBUG_DRIVER("Using vertical coarse scaling\n");
- vm = src_h;
- vn = (u32)ability * dst_h / 100;
- src_h = vn;
- }
- /* it seems that every RGB scaler has buffer for 2048 pixels */
- scanline = subsampled ? mixer->cfg->scanline_yuv : 2048;
- if (src_w > scanline) {
- DRM_DEBUG_DRIVER("Using horizontal coarse scaling\n");
- hm = src_w;
- hn = scanline;
- src_w = hn;
- }
- hscale = (src_w << 16) / dst_w;
- vscale = (src_h << 16) / dst_h;
- sun8i_vi_scaler_setup(mixer, channel, src_w, src_h, dst_w,
- dst_h, hscale, vscale, hphase, vphase,
- format);
- sun8i_vi_scaler_enable(mixer, channel, true);
- } else {
- DRM_DEBUG_DRIVER("HW scaling is not needed\n");
- sun8i_vi_scaler_enable(mixer, channel, false);
- }
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_HDS_Y(ch_base),
- SUN8I_MIXER_CHAN_VI_DS_N(hn) |
- SUN8I_MIXER_CHAN_VI_DS_M(hm));
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_HDS_UV(ch_base),
- SUN8I_MIXER_CHAN_VI_DS_N(hn) |
- SUN8I_MIXER_CHAN_VI_DS_M(hm));
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_VDS_Y(ch_base),
- SUN8I_MIXER_CHAN_VI_DS_N(vn) |
- SUN8I_MIXER_CHAN_VI_DS_M(vm));
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_VDS_UV(ch_base),
- SUN8I_MIXER_CHAN_VI_DS_N(vn) |
- SUN8I_MIXER_CHAN_VI_DS_M(vm));
- /* Set base coordinates */
- DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n",
- state->dst.x1, state->dst.y1);
- DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h);
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_BLEND_ATTR_COORD(bld_base, zpos),
- SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_BLEND_ATTR_INSIZE(bld_base, zpos),
- outsize);
- return 0;
- }
- static u32 sun8i_vi_layer_get_csc_mode(const struct drm_format_info *format)
- {
- if (!format->is_yuv)
- return SUN8I_CSC_MODE_OFF;
- switch (format->format) {
- case DRM_FORMAT_YVU411:
- case DRM_FORMAT_YVU420:
- case DRM_FORMAT_YVU422:
- case DRM_FORMAT_YVU444:
- return SUN8I_CSC_MODE_YVU2RGB;
- default:
- return SUN8I_CSC_MODE_YUV2RGB;
- }
- }
- static int sun8i_vi_layer_update_formats(struct sun8i_mixer *mixer, int channel,
- int overlay, struct drm_plane *plane)
- {
- struct drm_plane_state *state = plane->state;
- u32 val, ch_base, csc_mode, hw_fmt;
- const struct drm_format_info *fmt;
- int ret;
- ch_base = sun8i_channel_base(mixer, channel);
- fmt = state->fb->format;
- ret = sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt);
- if (ret) {
- DRM_DEBUG_DRIVER("Invalid format\n");
- return ret;
- }
- val = hw_fmt << SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET;
- regmap_update_bits(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
- SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK, val);
- csc_mode = sun8i_vi_layer_get_csc_mode(fmt);
- if (csc_mode != SUN8I_CSC_MODE_OFF) {
- sun8i_csc_set_ccsc_coefficients(mixer, channel, csc_mode,
- state->color_encoding,
- state->color_range);
- sun8i_csc_enable_ccsc(mixer, channel, true);
- } else {
- sun8i_csc_enable_ccsc(mixer, channel, false);
- }
- if (!fmt->is_yuv)
- val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE;
- else
- val = 0;
- regmap_update_bits(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
- SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE, val);
- /* It seems that YUV formats use global alpha setting. */
- if (mixer->cfg->is_de3)
- regmap_update_bits(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base,
- overlay),
- SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MASK,
- SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA(0xff));
- return 0;
- }
- static int sun8i_vi_layer_update_buffer(struct sun8i_mixer *mixer, int channel,
- int overlay, struct drm_plane *plane)
- {
- struct drm_plane_state *state = plane->state;
- struct drm_framebuffer *fb = state->fb;
- const struct drm_format_info *format = fb->format;
- struct drm_gem_cma_object *gem;
- u32 dx, dy, src_x, src_y;
- dma_addr_t paddr;
- u32 ch_base;
- int i;
- ch_base = sun8i_channel_base(mixer, channel);
- /* Adjust x and y to be dividable by subsampling factor */
- src_x = (state->src.x1 >> 16) & ~(format->hsub - 1);
- src_y = (state->src.y1 >> 16) & ~(format->vsub - 1);
- for (i = 0; i < format->num_planes; i++) {
- /* Get the physical address of the buffer in memory */
- gem = drm_fb_cma_get_gem_obj(fb, i);
- DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr);
- /* Compute the start of the displayed memory */
- paddr = gem->paddr + fb->offsets[i];
- dx = src_x;
- dy = src_y;
- if (i > 0) {
- dx /= format->hsub;
- dy /= format->vsub;
- }
- /* Fixup framebuffer address for src coordinates */
- paddr += dx * format->cpp[i];
- paddr += dy * fb->pitches[i];
- /* Set the line width */
- DRM_DEBUG_DRIVER("Layer %d. line width: %d bytes\n",
- i + 1, fb->pitches[i]);
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_LAYER_PITCH(ch_base,
- overlay, i),
- fb->pitches[i]);
- DRM_DEBUG_DRIVER("Setting %d. buffer address to %pad\n",
- i + 1, &paddr);
- regmap_write(mixer->engine.regs,
- SUN8I_MIXER_CHAN_VI_LAYER_TOP_LADDR(ch_base,
- overlay, i),
- lower_32_bits(paddr));
- }
- return 0;
- }
- static int sun8i_vi_layer_atomic_check(struct drm_plane *plane,
- struct drm_plane_state *state)
- {
- struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
- struct drm_crtc *crtc = state->crtc;
- struct drm_crtc_state *crtc_state;
- int min_scale, max_scale;
- if (!crtc)
- return 0;
- crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
- if (WARN_ON(!crtc_state))
- return -EINVAL;
- min_scale = DRM_PLANE_HELPER_NO_SCALING;
- max_scale = DRM_PLANE_HELPER_NO_SCALING;
- if (layer->mixer->cfg->scaler_mask & BIT(layer->channel)) {
- min_scale = SUN8I_VI_SCALER_SCALE_MIN;
- max_scale = SUN8I_VI_SCALER_SCALE_MAX;
- }
- return drm_atomic_helper_check_plane_state(state, crtc_state,
- min_scale, max_scale,
- true, true);
- }
- static void sun8i_vi_layer_atomic_disable(struct drm_plane *plane,
- struct drm_plane_state *old_state)
- {
- struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
- unsigned int old_zpos = old_state->normalized_zpos;
- struct sun8i_mixer *mixer = layer->mixer;
- sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, false, 0,
- old_zpos);
- }
- static void sun8i_vi_layer_atomic_update(struct drm_plane *plane,
- struct drm_plane_state *old_state)
- {
- struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
- unsigned int zpos = plane->state->normalized_zpos;
- unsigned int old_zpos = old_state->normalized_zpos;
- struct sun8i_mixer *mixer = layer->mixer;
- if (!plane->state->visible) {
- sun8i_vi_layer_enable(mixer, layer->channel,
- layer->overlay, false, 0, old_zpos);
- return;
- }
- sun8i_vi_layer_update_coord(mixer, layer->channel,
- layer->overlay, plane, zpos);
- sun8i_vi_layer_update_formats(mixer, layer->channel,
- layer->overlay, plane);
- sun8i_vi_layer_update_buffer(mixer, layer->channel,
- layer->overlay, plane);
- sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay,
- true, zpos, old_zpos);
- }
- static const struct drm_plane_helper_funcs sun8i_vi_layer_helper_funcs = {
- .prepare_fb = drm_gem_fb_prepare_fb,
- .atomic_check = sun8i_vi_layer_atomic_check,
- .atomic_disable = sun8i_vi_layer_atomic_disable,
- .atomic_update = sun8i_vi_layer_atomic_update,
- };
- static const struct drm_plane_funcs sun8i_vi_layer_funcs = {
- .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
- .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
- .destroy = drm_plane_cleanup,
- .disable_plane = drm_atomic_helper_disable_plane,
- .reset = drm_atomic_helper_plane_reset,
- .update_plane = drm_atomic_helper_update_plane,
- };
- /*
- * While DE2 VI layer supports same RGB formats as UI layer, alpha
- * channel is ignored. This structure lists all unique variants
- * where alpha channel is replaced with "don't care" (X) channel.
- */
- static const u32 sun8i_vi_layer_formats[] = {
- DRM_FORMAT_BGR565,
- DRM_FORMAT_BGR888,
- DRM_FORMAT_BGRX4444,
- DRM_FORMAT_BGRX5551,
- DRM_FORMAT_BGRX8888,
- DRM_FORMAT_RGB565,
- DRM_FORMAT_RGB888,
- DRM_FORMAT_RGBX4444,
- DRM_FORMAT_RGBX5551,
- DRM_FORMAT_RGBX8888,
- DRM_FORMAT_XBGR1555,
- DRM_FORMAT_XBGR4444,
- DRM_FORMAT_XBGR8888,
- DRM_FORMAT_XRGB1555,
- DRM_FORMAT_XRGB4444,
- DRM_FORMAT_XRGB8888,
- DRM_FORMAT_NV16,
- DRM_FORMAT_NV12,
- DRM_FORMAT_NV21,
- DRM_FORMAT_NV61,
- DRM_FORMAT_UYVY,
- DRM_FORMAT_VYUY,
- DRM_FORMAT_YUYV,
- DRM_FORMAT_YVYU,
- DRM_FORMAT_YUV411,
- DRM_FORMAT_YUV420,
- DRM_FORMAT_YUV422,
- DRM_FORMAT_YVU411,
- DRM_FORMAT_YVU420,
- DRM_FORMAT_YVU422,
- };
- static const u32 sun8i_vi_layer_de3_formats[] = {
- DRM_FORMAT_ABGR1555,
- DRM_FORMAT_ABGR2101010,
- DRM_FORMAT_ABGR4444,
- DRM_FORMAT_ABGR8888,
- DRM_FORMAT_ARGB1555,
- DRM_FORMAT_ARGB2101010,
- DRM_FORMAT_ARGB4444,
- DRM_FORMAT_ARGB8888,
- DRM_FORMAT_BGR565,
- DRM_FORMAT_BGR888,
- DRM_FORMAT_BGRA1010102,
- DRM_FORMAT_BGRA5551,
- DRM_FORMAT_BGRA4444,
- DRM_FORMAT_BGRA8888,
- DRM_FORMAT_BGRX8888,
- DRM_FORMAT_RGB565,
- DRM_FORMAT_RGB888,
- DRM_FORMAT_RGBA1010102,
- DRM_FORMAT_RGBA4444,
- DRM_FORMAT_RGBA5551,
- DRM_FORMAT_RGBA8888,
- DRM_FORMAT_RGBX8888,
- DRM_FORMAT_XBGR8888,
- DRM_FORMAT_XRGB8888,
- DRM_FORMAT_NV16,
- DRM_FORMAT_NV12,
- DRM_FORMAT_NV21,
- DRM_FORMAT_NV61,
- DRM_FORMAT_P010,
- DRM_FORMAT_P210,
- DRM_FORMAT_UYVY,
- DRM_FORMAT_VYUY,
- DRM_FORMAT_YUYV,
- DRM_FORMAT_YVYU,
- DRM_FORMAT_YUV411,
- DRM_FORMAT_YUV420,
- DRM_FORMAT_YUV422,
- DRM_FORMAT_YVU411,
- DRM_FORMAT_YVU420,
- DRM_FORMAT_YVU422,
- };
- struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
- struct sun8i_mixer *mixer,
- int index)
- {
- u32 supported_encodings, supported_ranges;
- unsigned int plane_cnt, format_count;
- struct sun8i_vi_layer *layer;
- const u32 *formats;
- int ret;
- layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
- if (!layer)
- return ERR_PTR(-ENOMEM);
- if (mixer->cfg->is_de3) {
- formats = sun8i_vi_layer_de3_formats;
- format_count = ARRAY_SIZE(sun8i_vi_layer_de3_formats);
- } else {
- formats = sun8i_vi_layer_formats;
- format_count = ARRAY_SIZE(sun8i_vi_layer_formats);
- }
- /* possible crtcs are set later */
- ret = drm_universal_plane_init(drm, &layer->plane, 0,
- &sun8i_vi_layer_funcs,
- formats, format_count,
- NULL, DRM_PLANE_TYPE_OVERLAY, NULL);
- if (ret) {
- dev_err(drm->dev, "Couldn't initialize layer\n");
- return ERR_PTR(ret);
- }
- plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;
- ret = drm_plane_create_zpos_property(&layer->plane, index,
- 0, plane_cnt - 1);
- if (ret) {
- dev_err(drm->dev, "Couldn't add zpos property\n");
- return ERR_PTR(ret);
- }
- supported_encodings = BIT(DRM_COLOR_YCBCR_BT601) |
- BIT(DRM_COLOR_YCBCR_BT709);
- supported_ranges = BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
- BIT(DRM_COLOR_YCBCR_FULL_RANGE);
- ret = drm_plane_create_color_properties(&layer->plane,
- supported_encodings,
- supported_ranges,
- DRM_COLOR_YCBCR_BT709,
- DRM_COLOR_YCBCR_LIMITED_RANGE);
- if (ret) {
- dev_err(drm->dev, "Couldn't add encoding and range properties!\n");
- return ERR_PTR(ret);
- }
- drm_plane_helper_add(&layer->plane, &sun8i_vi_layer_helper_funcs);
- layer->mixer = mixer;
- layer->channel = index;
- layer->overlay = 0;
- return layer;
- }
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