// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014 Free Electrons * Copyright (C) 2014 Atmel * * Author: Boris BREZILLON */ #include #include #include #include #include #include #include #include #include #include #include "atmel_hlcdc_dc.h" /** * struct atmel_hlcdc_plane_state - Atmel HLCDC Plane state structure. * * @base: DRM plane state * @crtc_x: x position of the plane relative to the CRTC * @crtc_y: y position of the plane relative to the CRTC * @crtc_w: visible width of the plane * @crtc_h: visible height of the plane * @src_x: x buffer position * @src_y: y buffer position * @src_w: buffer width * @src_h: buffer height * @disc_x: x discard position * @disc_y: y discard position * @disc_w: discard width * @disc_h: discard height * @ahb_id: AHB identification number * @bpp: bytes per pixel deduced from pixel_format * @offsets: offsets to apply to the GEM buffers * @xstride: value to add to the pixel pointer between each line * @pstride: value to add to the pixel pointer between each pixel * @nplanes: number of planes (deduced from pixel_format) * @dscrs: DMA descriptors */ struct atmel_hlcdc_plane_state { struct drm_plane_state base; int crtc_x; int crtc_y; unsigned int crtc_w; unsigned int crtc_h; uint32_t src_x; uint32_t src_y; uint32_t src_w; uint32_t src_h; int disc_x; int disc_y; int disc_w; int disc_h; int ahb_id; /* These fields are private and should not be touched */ int bpp[ATMEL_HLCDC_LAYER_MAX_PLANES]; unsigned int offsets[ATMEL_HLCDC_LAYER_MAX_PLANES]; int xstride[ATMEL_HLCDC_LAYER_MAX_PLANES]; int pstride[ATMEL_HLCDC_LAYER_MAX_PLANES]; int nplanes; /* DMA descriptors. */ struct atmel_hlcdc_dma_channel_dscr *dscrs[ATMEL_HLCDC_LAYER_MAX_PLANES]; }; static inline struct atmel_hlcdc_plane_state * drm_plane_state_to_atmel_hlcdc_plane_state(struct drm_plane_state *s) { return container_of(s, struct atmel_hlcdc_plane_state, base); } #define SUBPIXEL_MASK 0xffff static uint32_t rgb_formats[] = { DRM_FORMAT_C8, DRM_FORMAT_XRGB4444, DRM_FORMAT_ARGB4444, DRM_FORMAT_RGBA4444, DRM_FORMAT_ARGB1555, DRM_FORMAT_RGB565, DRM_FORMAT_RGB888, DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_RGBA8888, }; struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats = { .formats = rgb_formats, .nformats = ARRAY_SIZE(rgb_formats), }; static uint32_t rgb_and_yuv_formats[] = { DRM_FORMAT_C8, DRM_FORMAT_XRGB4444, DRM_FORMAT_ARGB4444, DRM_FORMAT_RGBA4444, DRM_FORMAT_ARGB1555, DRM_FORMAT_RGB565, DRM_FORMAT_RGB888, DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_RGBA8888, DRM_FORMAT_AYUV, DRM_FORMAT_YUYV, DRM_FORMAT_UYVY, DRM_FORMAT_YVYU, DRM_FORMAT_VYUY, DRM_FORMAT_NV21, DRM_FORMAT_NV61, DRM_FORMAT_YUV422, DRM_FORMAT_YUV420, }; struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats = { .formats = rgb_and_yuv_formats, .nformats = ARRAY_SIZE(rgb_and_yuv_formats), }; static int atmel_hlcdc_format_to_plane_mode(u32 format, u32 *mode) { switch (format) { case DRM_FORMAT_C8: *mode = ATMEL_HLCDC_C8_MODE; break; case DRM_FORMAT_XRGB4444: *mode = ATMEL_HLCDC_XRGB4444_MODE; break; case DRM_FORMAT_ARGB4444: *mode = ATMEL_HLCDC_ARGB4444_MODE; break; case DRM_FORMAT_RGBA4444: *mode = ATMEL_HLCDC_RGBA4444_MODE; break; case DRM_FORMAT_RGB565: *mode = ATMEL_HLCDC_RGB565_MODE; break; case DRM_FORMAT_RGB888: *mode = ATMEL_HLCDC_RGB888_MODE; break; case DRM_FORMAT_ARGB1555: *mode = ATMEL_HLCDC_ARGB1555_MODE; break; case DRM_FORMAT_XRGB8888: *mode = ATMEL_HLCDC_XRGB8888_MODE; break; case DRM_FORMAT_ARGB8888: *mode = ATMEL_HLCDC_ARGB8888_MODE; break; case DRM_FORMAT_RGBA8888: *mode = ATMEL_HLCDC_RGBA8888_MODE; break; case DRM_FORMAT_AYUV: *mode = ATMEL_HLCDC_AYUV_MODE; break; case DRM_FORMAT_YUYV: *mode = ATMEL_HLCDC_YUYV_MODE; break; case DRM_FORMAT_UYVY: *mode = ATMEL_HLCDC_UYVY_MODE; break; case DRM_FORMAT_YVYU: *mode = ATMEL_HLCDC_YVYU_MODE; break; case DRM_FORMAT_VYUY: *mode = ATMEL_HLCDC_VYUY_MODE; break; case DRM_FORMAT_NV21: *mode = ATMEL_HLCDC_NV21_MODE; break; case DRM_FORMAT_NV61: *mode = ATMEL_HLCDC_NV61_MODE; break; case DRM_FORMAT_YUV420: *mode = ATMEL_HLCDC_YUV420_MODE; break; case DRM_FORMAT_YUV422: *mode = ATMEL_HLCDC_YUV422_MODE; break; default: return -ENOTSUPP; } return 0; } static u32 heo_downscaling_xcoef[] = { 0x11343311, 0x000000f7, 0x1635300c, 0x000000f9, 0x1b362c08, 0x000000fb, 0x1f372804, 0x000000fe, 0x24382400, 0x00000000, 0x28371ffe, 0x00000004, 0x2c361bfb, 0x00000008, 0x303516f9, 0x0000000c, }; static u32 heo_downscaling_ycoef[] = { 0x00123737, 0x00173732, 0x001b382d, 0x001f3928, 0x00243824, 0x0028391f, 0x002d381b, 0x00323717, }; static u32 heo_upscaling_xcoef[] = { 0xf74949f7, 0x00000000, 0xf55f33fb, 0x000000fe, 0xf5701efe, 0x000000ff, 0xf87c0dff, 0x00000000, 0x00800000, 0x00000000, 0x0d7cf800, 0x000000ff, 0x1e70f5ff, 0x000000fe, 0x335ff5fe, 0x000000fb, }; static u32 heo_upscaling_ycoef[] = { 0x00004040, 0x00075920, 0x00056f0c, 0x00027b03, 0x00008000, 0x00037b02, 0x000c6f05, 0x00205907, }; #define ATMEL_HLCDC_XPHIDEF 4 #define ATMEL_HLCDC_YPHIDEF 4 static u32 atmel_hlcdc_plane_phiscaler_get_factor(u32 srcsize, u32 dstsize, u32 phidef) { u32 factor, max_memsize; factor = (256 * ((8 * (srcsize - 1)) - phidef)) / (dstsize - 1); max_memsize = ((factor * (dstsize - 1)) + (256 * phidef)) / 2048; if (max_memsize > srcsize - 1) factor--; return factor; } static void atmel_hlcdc_plane_scaler_set_phicoeff(struct atmel_hlcdc_plane *plane, const u32 *coeff_tab, int size, unsigned int cfg_offs) { int i; for (i = 0; i < size; i++) atmel_hlcdc_layer_write_cfg(&plane->layer, cfg_offs + i, coeff_tab[i]); } static void atmel_hlcdc_plane_setup_scaler(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_state *state) { const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc; u32 xfactor, yfactor; if (!desc->layout.scaler_config) return; if (state->crtc_w == state->src_w && state->crtc_h == state->src_h) { atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.scaler_config, 0); return; } if (desc->layout.phicoeffs.x) { xfactor = atmel_hlcdc_plane_phiscaler_get_factor(state->src_w, state->crtc_w, ATMEL_HLCDC_XPHIDEF); yfactor = atmel_hlcdc_plane_phiscaler_get_factor(state->src_h, state->crtc_h, ATMEL_HLCDC_YPHIDEF); atmel_hlcdc_plane_scaler_set_phicoeff(plane, state->crtc_w < state->src_w ? heo_downscaling_xcoef : heo_upscaling_xcoef, ARRAY_SIZE(heo_upscaling_xcoef), desc->layout.phicoeffs.x); atmel_hlcdc_plane_scaler_set_phicoeff(plane, state->crtc_h < state->src_h ? heo_downscaling_ycoef : heo_upscaling_ycoef, ARRAY_SIZE(heo_upscaling_ycoef), desc->layout.phicoeffs.y); } else { xfactor = (1024 * state->src_w) / state->crtc_w; yfactor = (1024 * state->src_h) / state->crtc_h; } atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.scaler_config, ATMEL_HLCDC_LAYER_SCALER_ENABLE | ATMEL_HLCDC_LAYER_SCALER_FACTORS(xfactor, yfactor)); } static void atmel_hlcdc_plane_update_pos_and_size(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_state *state) { const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc; if (desc->layout.size) atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.size, ATMEL_HLCDC_LAYER_SIZE(state->crtc_w, state->crtc_h)); if (desc->layout.memsize) atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.memsize, ATMEL_HLCDC_LAYER_SIZE(state->src_w, state->src_h)); if (desc->layout.pos) atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.pos, ATMEL_HLCDC_LAYER_POS(state->crtc_x, state->crtc_y)); atmel_hlcdc_plane_setup_scaler(plane, state); } static void atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_state *state) { unsigned int cfg = ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16 | state->ahb_id; const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc; const struct drm_format_info *format = state->base.fb->format; /* * Rotation optimization is not working on RGB888 (rotation is still * working but without any optimization). */ if (format->format == DRM_FORMAT_RGB888) cfg |= ATMEL_HLCDC_LAYER_DMA_ROTDIS; atmel_hlcdc_layer_write_cfg(&plane->layer, ATMEL_HLCDC_LAYER_DMA_CFG, cfg); cfg = ATMEL_HLCDC_LAYER_DMA | ATMEL_HLCDC_LAYER_REP; if (plane->base.type != DRM_PLANE_TYPE_PRIMARY) { cfg |= ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_ITER2BL | ATMEL_HLCDC_LAYER_ITER; if (format->has_alpha) cfg |= ATMEL_HLCDC_LAYER_LAEN; else cfg |= ATMEL_HLCDC_LAYER_GAEN | ATMEL_HLCDC_LAYER_GA(state->base.alpha); } if (state->disc_h && state->disc_w) cfg |= ATMEL_HLCDC_LAYER_DISCEN; atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.general_config, cfg); } static void atmel_hlcdc_plane_update_format(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_state *state) { u32 cfg; int ret; ret = atmel_hlcdc_format_to_plane_mode(state->base.fb->format->format, &cfg); if (ret) return; if ((state->base.fb->format->format == DRM_FORMAT_YUV422 || state->base.fb->format->format == DRM_FORMAT_NV61) && drm_rotation_90_or_270(state->base.rotation)) cfg |= ATMEL_HLCDC_YUV422ROT; atmel_hlcdc_layer_write_cfg(&plane->layer, ATMEL_HLCDC_LAYER_FORMAT_CFG, cfg); } static void atmel_hlcdc_plane_update_clut(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_state *state) { struct drm_crtc *crtc = state->base.crtc; struct drm_color_lut *lut; int idx; if (!crtc || !crtc->state) return; if (!crtc->state->color_mgmt_changed || !crtc->state->gamma_lut) return; lut = (struct drm_color_lut *)crtc->state->gamma_lut->data; for (idx = 0; idx < ATMEL_HLCDC_CLUT_SIZE; idx++, lut++) { u32 val = ((lut->red << 8) & 0xff0000) | (lut->green & 0xff00) | (lut->blue >> 8); atmel_hlcdc_layer_write_clut(&plane->layer, idx, val); } } static void atmel_hlcdc_plane_update_buffers(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_state *state) { const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc; struct drm_framebuffer *fb = state->base.fb; u32 sr; int i; sr = atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHSR); for (i = 0; i < state->nplanes; i++) { struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(fb, i); state->dscrs[i]->addr = gem->paddr + state->offsets[i]; atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_PLANE_HEAD(i), state->dscrs[i]->self); if (!(sr & ATMEL_HLCDC_LAYER_EN)) { atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_PLANE_ADDR(i), state->dscrs[i]->addr); atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_PLANE_CTRL(i), state->dscrs[i]->ctrl); atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_PLANE_NEXT(i), state->dscrs[i]->self); } if (desc->layout.xstride[i]) atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.xstride[i], state->xstride[i]); if (desc->layout.pstride[i]) atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.pstride[i], state->pstride[i]); } } int atmel_hlcdc_plane_prepare_ahb_routing(struct drm_crtc_state *c_state) { unsigned int ahb_load[2] = { }; struct drm_plane *plane; drm_atomic_crtc_state_for_each_plane(plane, c_state) { struct atmel_hlcdc_plane_state *plane_state; struct drm_plane_state *plane_s; unsigned int pixels, load = 0; int i; plane_s = drm_atomic_get_plane_state(c_state->state, plane); if (IS_ERR(plane_s)) return PTR_ERR(plane_s); plane_state = drm_plane_state_to_atmel_hlcdc_plane_state(plane_s); pixels = (plane_state->src_w * plane_state->src_h) - (plane_state->disc_w * plane_state->disc_h); for (i = 0; i < plane_state->nplanes; i++) load += pixels * plane_state->bpp[i]; if (ahb_load[0] <= ahb_load[1]) plane_state->ahb_id = 0; else plane_state->ahb_id = 1; ahb_load[plane_state->ahb_id] += load; } return 0; } int atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state) { int disc_x = 0, disc_y = 0, disc_w = 0, disc_h = 0; const struct atmel_hlcdc_layer_cfg_layout *layout; struct atmel_hlcdc_plane_state *primary_state; struct drm_plane_state *primary_s; struct atmel_hlcdc_plane *primary; struct drm_plane *ovl; primary = drm_plane_to_atmel_hlcdc_plane(c_state->crtc->primary); layout = &primary->layer.desc->layout; if (!layout->disc_pos || !layout->disc_size) return 0; primary_s = drm_atomic_get_plane_state(c_state->state, &primary->base); if (IS_ERR(primary_s)) return PTR_ERR(primary_s); primary_state = drm_plane_state_to_atmel_hlcdc_plane_state(primary_s); drm_atomic_crtc_state_for_each_plane(ovl, c_state) { struct atmel_hlcdc_plane_state *ovl_state; struct drm_plane_state *ovl_s; if (ovl == c_state->crtc->primary) continue; ovl_s = drm_atomic_get_plane_state(c_state->state, ovl); if (IS_ERR(ovl_s)) return PTR_ERR(ovl_s); ovl_state = drm_plane_state_to_atmel_hlcdc_plane_state(ovl_s); if (!ovl_s->visible || !ovl_s->fb || ovl_s->fb->format->has_alpha || ovl_s->alpha != DRM_BLEND_ALPHA_OPAQUE) continue; /* TODO: implement a smarter hidden area detection */ if (ovl_state->crtc_h * ovl_state->crtc_w < disc_h * disc_w) continue; disc_x = ovl_state->crtc_x; disc_y = ovl_state->crtc_y; disc_h = ovl_state->crtc_h; disc_w = ovl_state->crtc_w; } primary_state->disc_x = disc_x; primary_state->disc_y = disc_y; primary_state->disc_w = disc_w; primary_state->disc_h = disc_h; return 0; } static void atmel_hlcdc_plane_update_disc_area(struct atmel_hlcdc_plane *plane, struct atmel_hlcdc_plane_state *state) { const struct atmel_hlcdc_layer_cfg_layout *layout; layout = &plane->layer.desc->layout; if (!layout->disc_pos || !layout->disc_size) return; atmel_hlcdc_layer_write_cfg(&plane->layer, layout->disc_pos, ATMEL_HLCDC_LAYER_DISC_POS(state->disc_x, state->disc_y)); atmel_hlcdc_layer_write_cfg(&plane->layer, layout->disc_size, ATMEL_HLCDC_LAYER_DISC_SIZE(state->disc_w, state->disc_h)); } static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p, struct drm_atomic_state *state) { struct drm_plane_state *s = drm_atomic_get_new_plane_state(state, p); struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); struct atmel_hlcdc_plane_state *hstate = drm_plane_state_to_atmel_hlcdc_plane_state(s); const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc; struct drm_framebuffer *fb = hstate->base.fb; const struct drm_display_mode *mode; struct drm_crtc_state *crtc_state; int ret; int i; if (!hstate->base.crtc || WARN_ON(!fb)) return 0; crtc_state = drm_atomic_get_existing_crtc_state(state, s->crtc); mode = &crtc_state->adjusted_mode; ret = drm_atomic_helper_check_plane_state(s, crtc_state, (1 << 16) / 2048, INT_MAX, true, true); if (ret || !s->visible) return ret; hstate->src_x = s->src.x1; hstate->src_y = s->src.y1; hstate->src_w = drm_rect_width(&s->src); hstate->src_h = drm_rect_height(&s->src); hstate->crtc_x = s->dst.x1; hstate->crtc_y = s->dst.y1; hstate->crtc_w = drm_rect_width(&s->dst); hstate->crtc_h = drm_rect_height(&s->dst); if ((hstate->src_x | hstate->src_y | hstate->src_w | hstate->src_h) & SUBPIXEL_MASK) return -EINVAL; hstate->src_x >>= 16; hstate->src_y >>= 16; hstate->src_w >>= 16; hstate->src_h >>= 16; hstate->nplanes = fb->format->num_planes; if (hstate->nplanes > ATMEL_HLCDC_LAYER_MAX_PLANES) return -EINVAL; for (i = 0; i < hstate->nplanes; i++) { unsigned int offset = 0; int xdiv = i ? fb->format->hsub : 1; int ydiv = i ? fb->format->vsub : 1; hstate->bpp[i] = fb->format->cpp[i]; if (!hstate->bpp[i]) return -EINVAL; switch (hstate->base.rotation & DRM_MODE_ROTATE_MASK) { case DRM_MODE_ROTATE_90: offset = (hstate->src_y / ydiv) * fb->pitches[i]; offset += ((hstate->src_x + hstate->src_w - 1) / xdiv) * hstate->bpp[i]; hstate->xstride[i] = -(((hstate->src_h - 1) / ydiv) * fb->pitches[i]) - (2 * hstate->bpp[i]); hstate->pstride[i] = fb->pitches[i] - hstate->bpp[i]; break; case DRM_MODE_ROTATE_180: offset = ((hstate->src_y + hstate->src_h - 1) / ydiv) * fb->pitches[i]; offset += ((hstate->src_x + hstate->src_w - 1) / xdiv) * hstate->bpp[i]; hstate->xstride[i] = ((((hstate->src_w - 1) / xdiv) - 1) * hstate->bpp[i]) - fb->pitches[i]; hstate->pstride[i] = -2 * hstate->bpp[i]; break; case DRM_MODE_ROTATE_270: offset = ((hstate->src_y + hstate->src_h - 1) / ydiv) * fb->pitches[i]; offset += (hstate->src_x / xdiv) * hstate->bpp[i]; hstate->xstride[i] = ((hstate->src_h - 1) / ydiv) * fb->pitches[i]; hstate->pstride[i] = -fb->pitches[i] - hstate->bpp[i]; break; case DRM_MODE_ROTATE_0: default: offset = (hstate->src_y / ydiv) * fb->pitches[i]; offset += (hstate->src_x / xdiv) * hstate->bpp[i]; hstate->xstride[i] = fb->pitches[i] - ((hstate->src_w / xdiv) * hstate->bpp[i]); hstate->pstride[i] = 0; break; } hstate->offsets[i] = offset + fb->offsets[i]; } /* * Swap width and size in case of 90 or 270 degrees rotation */ if (drm_rotation_90_or_270(hstate->base.rotation)) { swap(hstate->src_w, hstate->src_h); } if (!desc->layout.size && (mode->hdisplay != hstate->crtc_w || mode->vdisplay != hstate->crtc_h)) return -EINVAL; if ((hstate->crtc_h != hstate->src_h || hstate->crtc_w != hstate->src_w) && (!desc->layout.memsize || hstate->base.fb->format->has_alpha)) return -EINVAL; return 0; } static void atmel_hlcdc_plane_atomic_disable(struct drm_plane *p, struct drm_atomic_state *state) { struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); /* Disable interrupts */ atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_IDR, 0xffffffff); /* Disable the layer */ atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHDR, ATMEL_HLCDC_LAYER_RST | ATMEL_HLCDC_LAYER_A2Q | ATMEL_HLCDC_LAYER_UPDATE); /* Clear all pending interrupts */ atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_ISR); } static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p, struct drm_atomic_state *state) { struct drm_plane_state *new_s = drm_atomic_get_new_plane_state(state, p); struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p); struct atmel_hlcdc_plane_state *hstate = drm_plane_state_to_atmel_hlcdc_plane_state(new_s); u32 sr; if (!new_s->crtc || !new_s->fb) return; if (!hstate->base.visible) { atmel_hlcdc_plane_atomic_disable(p, state); return; } atmel_hlcdc_plane_update_pos_and_size(plane, hstate); atmel_hlcdc_plane_update_general_settings(plane, hstate); atmel_hlcdc_plane_update_format(plane, hstate); atmel_hlcdc_plane_update_clut(plane, hstate); atmel_hlcdc_plane_update_buffers(plane, hstate); atmel_hlcdc_plane_update_disc_area(plane, hstate); /* Enable the overrun interrupts. */ atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_IER, ATMEL_HLCDC_LAYER_OVR_IRQ(0) | ATMEL_HLCDC_LAYER_OVR_IRQ(1) | ATMEL_HLCDC_LAYER_OVR_IRQ(2)); /* Apply the new config at the next SOF event. */ sr = atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHSR); atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHER, ATMEL_HLCDC_LAYER_UPDATE | (sr & ATMEL_HLCDC_LAYER_EN ? ATMEL_HLCDC_LAYER_A2Q : ATMEL_HLCDC_LAYER_EN)); } static int atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane) { const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc; if (desc->type == ATMEL_HLCDC_OVERLAY_LAYER || desc->type == ATMEL_HLCDC_CURSOR_LAYER) { int ret; ret = drm_plane_create_alpha_property(&plane->base); if (ret) return ret; } if (desc->layout.xstride[0] && desc->layout.pstride[0]) { int ret; ret = drm_plane_create_rotation_property(&plane->base, DRM_MODE_ROTATE_0, DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_90 | DRM_MODE_ROTATE_180 | DRM_MODE_ROTATE_270); if (ret) return ret; } if (desc->layout.csc) { /* * TODO: decare a "yuv-to-rgb-conv-factors" property to let * userspace modify these factors (using a BLOB property ?). */ atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.csc, 0x4c900091); atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.csc + 1, 0x7a5f5090); atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.csc + 2, 0x40040890); } return 0; } void atmel_hlcdc_plane_irq(struct atmel_hlcdc_plane *plane) { const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc; u32 isr; isr = atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_ISR); /* * There's not much we can do in case of overrun except informing * the user. However, we are in interrupt context here, hence the * use of dev_dbg(). */ if (isr & (ATMEL_HLCDC_LAYER_OVR_IRQ(0) | ATMEL_HLCDC_LAYER_OVR_IRQ(1) | ATMEL_HLCDC_LAYER_OVR_IRQ(2))) dev_dbg(plane->base.dev->dev, "overrun on plane %s\n", desc->name); } static const struct drm_plane_helper_funcs atmel_hlcdc_layer_plane_helper_funcs = { .atomic_check = atmel_hlcdc_plane_atomic_check, .atomic_update = atmel_hlcdc_plane_atomic_update, .atomic_disable = atmel_hlcdc_plane_atomic_disable, }; static int atmel_hlcdc_plane_alloc_dscrs(struct drm_plane *p, struct atmel_hlcdc_plane_state *state) { struct atmel_hlcdc_dc *dc = p->dev->dev_private; int i; for (i = 0; i < ARRAY_SIZE(state->dscrs); i++) { struct atmel_hlcdc_dma_channel_dscr *dscr; dma_addr_t dscr_dma; dscr = dma_pool_alloc(dc->dscrpool, GFP_KERNEL, &dscr_dma); if (!dscr) goto err; dscr->addr = 0; dscr->next = dscr_dma; dscr->self = dscr_dma; dscr->ctrl = ATMEL_HLCDC_LAYER_DFETCH; state->dscrs[i] = dscr; } return 0; err: for (i--; i >= 0; i--) { dma_pool_free(dc->dscrpool, state->dscrs[i], state->dscrs[i]->self); } return -ENOMEM; } static void atmel_hlcdc_plane_reset(struct drm_plane *p) { struct atmel_hlcdc_plane_state *state; if (p->state) { state = drm_plane_state_to_atmel_hlcdc_plane_state(p->state); if (state->base.fb) drm_framebuffer_put(state->base.fb); kfree(state); p->state = NULL; } state = kzalloc(sizeof(*state), GFP_KERNEL); if (state) { if (atmel_hlcdc_plane_alloc_dscrs(p, state)) { kfree(state); dev_err(p->dev->dev, "Failed to allocate initial plane state\n"); return; } __drm_atomic_helper_plane_reset(p, &state->base); } } static struct drm_plane_state * atmel_hlcdc_plane_atomic_duplicate_state(struct drm_plane *p) { struct atmel_hlcdc_plane_state *state = drm_plane_state_to_atmel_hlcdc_plane_state(p->state); struct atmel_hlcdc_plane_state *copy; copy = kmemdup(state, sizeof(*state), GFP_KERNEL); if (!copy) return NULL; if (atmel_hlcdc_plane_alloc_dscrs(p, copy)) { kfree(copy); return NULL; } if (copy->base.fb) drm_framebuffer_get(copy->base.fb); return ©->base; } static void atmel_hlcdc_plane_atomic_destroy_state(struct drm_plane *p, struct drm_plane_state *s) { struct atmel_hlcdc_plane_state *state = drm_plane_state_to_atmel_hlcdc_plane_state(s); struct atmel_hlcdc_dc *dc = p->dev->dev_private; int i; for (i = 0; i < ARRAY_SIZE(state->dscrs); i++) { dma_pool_free(dc->dscrpool, state->dscrs[i], state->dscrs[i]->self); } if (s->fb) drm_framebuffer_put(s->fb); kfree(state); } static const struct drm_plane_funcs layer_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .destroy = drm_plane_cleanup, .reset = atmel_hlcdc_plane_reset, .atomic_duplicate_state = atmel_hlcdc_plane_atomic_duplicate_state, .atomic_destroy_state = atmel_hlcdc_plane_atomic_destroy_state, }; static int atmel_hlcdc_plane_create(struct drm_device *dev, const struct atmel_hlcdc_layer_desc *desc) { struct atmel_hlcdc_dc *dc = dev->dev_private; struct atmel_hlcdc_plane *plane; enum drm_plane_type type; int ret; plane = devm_kzalloc(dev->dev, sizeof(*plane), GFP_KERNEL); if (!plane) return -ENOMEM; atmel_hlcdc_layer_init(&plane->layer, desc, dc->hlcdc->regmap); if (desc->type == ATMEL_HLCDC_BASE_LAYER) type = DRM_PLANE_TYPE_PRIMARY; else if (desc->type == ATMEL_HLCDC_CURSOR_LAYER) type = DRM_PLANE_TYPE_CURSOR; else type = DRM_PLANE_TYPE_OVERLAY; ret = drm_universal_plane_init(dev, &plane->base, 0, &layer_plane_funcs, desc->formats->formats, desc->formats->nformats, NULL, type, NULL); if (ret) return ret; drm_plane_helper_add(&plane->base, &atmel_hlcdc_layer_plane_helper_funcs); /* Set default property values*/ ret = atmel_hlcdc_plane_init_properties(plane); if (ret) return ret; dc->layers[desc->id] = &plane->layer; return 0; } int atmel_hlcdc_create_planes(struct drm_device *dev) { struct atmel_hlcdc_dc *dc = dev->dev_private; const struct atmel_hlcdc_layer_desc *descs = dc->desc->layers; int nlayers = dc->desc->nlayers; int i, ret; dc->dscrpool = dmam_pool_create("atmel-hlcdc-dscr", dev->dev, sizeof(struct atmel_hlcdc_dma_channel_dscr), sizeof(u64), 0); if (!dc->dscrpool) return -ENOMEM; for (i = 0; i < nlayers; i++) { if (descs[i].type != ATMEL_HLCDC_BASE_LAYER && descs[i].type != ATMEL_HLCDC_OVERLAY_LAYER && descs[i].type != ATMEL_HLCDC_CURSOR_LAYER) continue; ret = atmel_hlcdc_plane_create(dev, &descs[i]); if (ret) return ret; } return 0; }